8386 files changed, 810898 insertions, 766475 deletions

diff --git a/.appveyor.yml b/.appveyor.yml
deleted file mode 100644
index 6803edff9b..0000000000
--- a/.appveyor.yml
+++ /dev/null
@@ -1,131 +0,0 @@
----
-version: '{build}'
-init:
-  - git config --global user.name git
-  - git config --global user.email svn-admin@ruby-lang.org
-  - git config --global core.autocrlf false
-  - git config --global core.eol lf
-  - git config --global advice.detachedHead 0
-shallow_clone: true
-clone_depth: 10
-platform:
-  - x64
-skip_commits:
-  message: /\[DOC\]/
-  files:
-    - doc/*
-    - '**/*.md'
-    - '**/*.rdoc'
-    - '**/.document'
-    - '**/*.[1-8]'
-    - '**/*.ronn'
-environment:
-  ruby_version: "24-%Platform%"
-  matrix:
-    # Test only the oldest supported version because AppVeyor is unstable, its concurrency
-    # is limited, and compatibility issues that happen only in newer versions are rare.
-    # You may test some other stuff on GitHub Actions instead.
-    - build: vs
-      vs: 120
-      ssl: OpenSSL-v111
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      GEMS_FOR_TEST: ""
-  RELINE_TEST_ENCODING: "UTF-8"
-cache:
-  - c:\Tools\vcpkg\installed\
-for:
--
-  matrix:
-    only:
-      - build: vs
-  install:
-    - ver
-    - chcp
-    - SET BITS=%Platform:x86=32%
-    - SET BITS=%BITS:x=%
-    - SET OPENSSL_DIR=C:\%ssl%-Win%BITS%
-    - cd C:\Tools\vcpkg
-    - git pull -q
-    - .\bootstrap-vcpkg.bat
-    - cd %APPVEYOR_BUILD_FOLDER%
-    - vcpkg --triplet %Platform%-windows install --x-use-aria2 libffi libyaml readline zlib
-    - 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% up VCSUP="echo Update OK"
-    - nmake %mflags% extract-extlibs
-    - del Makefile
-    - mkdir \usr\local\bin
-    - mkdir \usr\local\include
-    - mkdir \usr\local\lib
-    - for %%I in (%OPENSSL_DIR%\*.dll) do mklink /h \usr\local\bin\%%~nxI %%I
-    - for %%I in (c:\Tools\vcpkg\installed\%Platform%-windows\bin\*.dll) do (
-        if not %%~nI == readline mklink \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
-      --with-opt-dir="/usr/local;c:/Tools/vcpkg/installed/%Platform%-windows"
-      --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 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"
-      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
-      " test-all
-    - 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",
-          "url": "{{buildUrl}}",
-          "commit": "{{commitId}}",
-          "branch": "{{branch}}"
-        }
-      {{/isPullRequest}}
-    on_build_success: false
-    on_build_failure: true
-    on_build_status_changed: false
diff --git a/.cirrus.yml b/.cirrus.yml
deleted file mode 100644
index c496d5941b..0000000000
--- a/.cirrus.yml
+++ /dev/null
@@ -1,133 +0,0 @@
-# This CI is used to test Arm cases. We can set the maximum 16 tasks.
-# The entire testing design is inspired from .github/workflows/compilers.yml.
-
-# By default, Cirrus mounts an empty volume to `/tmp`
-# which triggers all sorts of warnings like "system temporary path is world-writable: /tmp".
-# Lets workaround it by specifying a custom volume mount point.
-env:
-  CIRRUS_VOLUME: /cirrus-ci-volume
-  LANG: C.UTF-8
-
-task:
-  name: Arm64 Graviton2 / $CC
-  skip: "changesIncludeOnly('doc/**', '**.{md,rdoc,ronn,[1-8]}', '.document')"
-  arm_container:
-    # We use the arm64 images at https://github.com/ruby/ruby-ci-image/pkgs/container/ruby-ci-image .
-    image: ghcr.io/ruby/ruby-ci-image:$CC
-    # Define the used cpu core in each matrix task. We can use total 16 cpu
-    # cores in entire matrix. [cpu] = [total cpu: 16] / [number of tasks]
-    cpu: 8
-    # We can request maximum 4 GB per cpu.
-    # [memory per task] = [memory per cpu: 4 GB] * [cpu]
-    memory: 32G
-  env:
-    CIRRUS_CLONE_DEPTH: 50
-    optflags: '-O1'
-    debugflags: '-ggdb3'
-    RUBY_PREFIX: /tmp/ruby-prefix
-    RUBY_DEBUG: ci rgengc
-    RUBY_TESTOPTS: >-
-      -q
-      --color=always
-      --tty=no
-    matrix:
-      CC: clang-12
-      CC: gcc-11
-  id_script: id
-  set_env_script:
-    # Set `GNUMAKEFLAGS`, because the flags are GNU make specific. Note using
-    # the `make` environment variable used in compilers.yml causes some rubygems
-    # tests to fail.
-    # https://github.com/rubygems/rubygems/issues/4921
-    - echo "GNUMAKEFLAGS=-s -j$((1 + $CIRRUS_CPU))" >> "$CIRRUS_ENV"
-    - cat "$CIRRUS_ENV"
-  # Arm containers are executed in AWS's EKS, and it's not yet supporting IPv6
-  # See https://github.com/aws/containers-roadmap/issues/835
-  disable_ipv6_script: sudo ./tool/disable_ipv6.sh
-  autogen_script: ./autogen.sh
-  configure_script: >-
-    ./configure -C
-    --enable-debug-env
-    --disable-install-doc
-    --with-ext=-test-/cxxanyargs,+
-    --prefix="$RUBY_PREFIX"
-  make_extract-extlibs_script: make extract-extlibs
-  make_incs_script: make incs
-  make_script: make
-  make_leaked-globals_script: make leaked-globals
-  make_test_script: make test
-  make_install_script: make install
-  install_gems_for_test_script: $RUBY_PREFIX/bin/gem install --no-doc timezone tzinfo
-  make_test-tool_script: make test-tool
-  make_test-all_script: make test-all
-  make_test-spec_script: make test-spec
-
-# The following is to test YJIT on ARM64 CPUs available on Cirrus CI
-yjit_task:
-  name: Arm64 Graviton2 / $CC YJIT
-  auto_cancellation: $CIRRUS_BRANCH != 'master'
-  skip: "changesIncludeOnly('doc/**', '**.{md,rdoc,ronn,[1-8]}', '.document')"
-  arm_container:
-    # We use the arm64 images at https://github.com/ruby/ruby-ci-image/pkgs/container/ruby-ci-image .
-    image: ghcr.io/ruby/ruby-ci-image:$CC
-    # Define the used cpu core in each matrix task. We can use total 16 cpu
-    # cores in entire matrix. [cpu] = [total cpu: 16] / [number of tasks]
-    cpu: 8
-    # We can request maximum 4 GB per cpu.
-    # [memory per task] = [memory per cpu: 4 GB] * [cpu]
-    memory: 32G
-  env:
-    CIRRUS_CLONE_DEPTH: 50
-    optflags: '-O1'
-    debugflags: '-ggdb3'
-    RUBY_PREFIX: /tmp/ruby-prefix
-    RUBY_DEBUG: ci rgengc
-    RUBY_TESTOPTS: >-
-      -q
-      --color=always
-      --tty=no
-    matrix:
-      - CC: clang-12
-        configure: --enable-yjit=dev
-        rustup_init: --default-toolchain=1.58.1
-      - CC: gcc-11
-        configure: --enable-yjit
-  id_script: id
-  set_env_script:
-    # Set `GNUMAKEFLAGS`, because the flags are GNU make specific. Note using
-    # the `make` environment variable used in compilers.yml causes some rubygems
-    # tests to fail.
-    # https://github.com/rubygems/rubygems/issues/4921
-    - echo "GNUMAKEFLAGS=-s -j$((1 + $CIRRUS_CPU))" >> "$CIRRUS_ENV"
-    - echo RUST_BACKTRACE=1 >> "$CIRRUS_ENV"
-    - cat "$CIRRUS_ENV"
-  # Arm containers are executed in AWS's EKS, and it's not yet supporting IPv6
-  # See https://github.com/aws/containers-roadmap/issues/835
-  disable_ipv6_script: sudo ./tool/disable_ipv6.sh
-  install_rust_script:
-    - sudo apt-get update -y
-    - sudo apt-get install -y curl
-    - "curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y $rustup_init"
-  autogen_script: ./autogen.sh
-  configure_script: >-
-    source $HOME/.cargo/env && ./configure -C
-    --enable-debug-env
-    --disable-install-doc
-    --with-ext=-test-/cxxanyargs,+
-    --prefix="$RUBY_PREFIX"
-    $configure
-  make_miniruby_script: source $HOME/.cargo/env && make miniruby
-  make_bindgen_script: |
-    if [[ "$CC" = "clang-12" ]]; then
-      source $HOME/.cargo/env && make yjit-bindgen
-    else
-      echo "only running bindgen on clang image"
-    fi
-  boot_miniruby_script: ./miniruby --yjit-call-threshold=1 -e0
-  test_dump_insns_script: ./miniruby --yjit-call-threshold=1 --yjit-dump-insns -e0
-  output_stats_script: ./miniruby --yjit-call-threshold=1 --yjit-stats -e0
-  full_build_script: source $HOME/.cargo/env && make
-  cargo_test_script: source $HOME/.cargo/env && cd yjit && cargo test
-  make_test_script: source $HOME/.cargo/env && make test RUN_OPTS="--yjit-call-threshold=1 --yjit-verify-ctx"
-  make_test_all_script: source $HOME/.cargo/env && make test-all RUN_OPTS="--yjit-call-threshold=1 --yjit-verify-ctx" TESTOPTS="$RUBY_TESTOPTS"
-  make_test_spec_script: source $HOME/.cargo/env && make test-spec RUN_OPTS="--yjit-call-threshold=1 --yjit-verify-ctx"
diff --git a/.document b/.document
index ec2fa09326..82ca602bfb 100644
--- a/.document
+++ b/.document
@@ -15,18 +15,26 @@ array.rb
 ast.rb
 dir.rb
 gc.rb
+hash.rb
 io.rb
 kernel.rb
 marshal.rb
 numeric.rb
 nilclass.rb
 pack.rb
+pathname_builtin.rb
 ractor.rb
 string.rb
+symbol.rb
 timev.rb
 thread_sync.rb
 trace_point.rb
 warning.rb
+yjit.rb
+zjit.rb
+
+# Errno::*
+known_errors.inc
 
 # the lib/ directory (which has its own .document file)
 lib
@@ -45,7 +53,4 @@ COPYING.ja
 
 LEGAL
 
-# win32/README.win32 linked from README.md
-win32
-
 doc
diff --git a/.gdbinit b/.gdbinit
index 34d044caf6..bda544c641 100644
--- a/.gdbinit
+++ b/.gdbinit
@@ -1,23 +1,7 @@
-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
+  init-if-undefined $color_type = "\033[31m"
+  init-if-undefined $color_highlite = "\033[36m"
+  init-if-undefined $color_end = "\033[m"
 end
 
 # set prompt \033[36m(gdb)\033[m\040
@@ -67,7 +51,7 @@ define rp
     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)
+      print/x *((VALUE*)((struct RObject*)($arg0))->as.ary) @ (RSHAPE_CAPACITY(rb_obj_shape_id($arg0)))
     else
       print (((struct RObject *)($arg0))->as.heap)
       if (((struct RObject*)($arg0))->as.heap.numiv) > 0
@@ -99,13 +83,11 @@ define rp
     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 $len = ((struct RString*)($arg0))->len
     set print address off
     output *(char *)(($rsflags & RUBY_FL_USER1) ? \
-	    ((struct RString*)$regsrc)->as.heap.ptr : \
-	    ((struct RString*)$regsrc)->as.ary) @ $len
+            ((struct RString*)$regsrc)->as.heap.ptr : \
+            ((struct RString*)$regsrc)->as.embed.ary) @ $len
     set print address on
     printf " len:%ld ", $len
     if $flags & RUBY_FL_USER6
@@ -126,26 +108,26 @@ define rp
       printf "%sT_ARRAY%s: len=%ld ", $color_type, $color_end, $len
       printf "(embed) "
       if ($len == 0)
-	printf "{(empty)} "
+        printf "{(empty)} "
       else
-	print/x *((VALUE*)((struct RArray*)($arg0))->as.ary) @ $len
-	printf " "
+        print/x *((VALUE*)((struct RArray*)($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*)($arg0))->as.heap.aux.shared_root
-	printf " "
+        printf "(shared) shared="
+        output/x ((struct RArray*)($arg0))->as.heap.aux.shared_root
+        printf " "
       else
-	printf "(ownership) capa=%ld ", ((struct RArray*)($arg0))->as.heap.aux.capa
+        printf "(ownership) capa=%ld ", ((struct RArray*)($arg0))->as.heap.aux.capa
       end
       if ($len == 0)
-	printf "{(empty)} "
+        printf "{(empty)} "
       else
-	print/x *((VALUE*)((struct RArray*)($arg0))->as.heap.ptr) @ $len
-	printf " "
+        print/x *((VALUE*)((struct RArray*)($arg0))->as.heap.ptr) @ $len
+        printf " "
       end
     end
     print (struct RArray *)($arg0)
@@ -157,13 +139,15 @@ define rp
   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
+      set $st = (struct st_table *)((uintptr_t)($arg0) + sizeof(struct RHash))
+      printf "st len=%ld ", $st->num_entries
+      print $st
     else
       printf "li len=%ld bound=%ld ", \
         ((((struct RHash *)($arg0))->basic.flags & RHASH_AR_TABLE_SIZE_MASK) >> RHASH_AR_TABLE_SIZE_SHIFT), \
         ((((struct RHash *)($arg0))->basic.flags & RHASH_AR_TABLE_BOUND_MASK) >> RHASH_AR_TABLE_BOUND_SHIFT)
+	print (struct ar_table_struct *)((uintptr_t)($arg0) + sizeof(struct RHash))
     end
-    print (struct RHash *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_STRUCT
     set $len = (($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) ? \
@@ -201,12 +185,19 @@ define rp
     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 *)($arg0)
+    if ($flags & RUBY_TYPED_FL_IS_TYPED_DATA)
+      set $data = (struct RTypedData *)($arg0)
+      set $type = (const rb_data_type_t *)($data->type & ~1)
+      printf "%sT_DATA%s(%s): ", $color_type, $color_end, $type->wrap_struct_name
+      print *$type
+      if ($data->type & 1)
+        print (void *)&$data->data
+      else
+        print $data
+      end
     else
       printf "%sT_DATA%s: ", $color_type, $color_end
-      print (struct RData *)($arg0)
+      print *(struct RData *)($arg0)
     end
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_MATCH
@@ -440,13 +431,11 @@ 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)
+  set $len = ((struct RString*)($arg0))->len
   if $len > 0
     output *(char *)(($flags & RUBY_FL_USER1) ? \
-	    ((struct RString*)($arg0))->as.heap.ptr : \
-	    ((struct RString*)($arg0))->as.ary) @ $len
+            ((struct RString*)($arg0))->as.heap.ptr : \
+            ((struct RString*)($arg0))->as.embed.ary) @ $len
   else
     output ""
   end
@@ -454,13 +443,11 @@ 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)
+  set $len = ((struct RString*)($arg0))->len
   if $len > 0
     printf "%s", *(char *)(($flags & RUBY_FL_USER1) ? \
-	    ((struct RString*)($arg0))->as.heap.ptr : \
-	    ((struct RString*)($arg0))->as.ary) @ $len
+            ((struct RString*)($arg0))->as.heap.ptr : \
+            ((struct RString*)($arg0))->as.embed.ary) @ $len
   end
 end
 
@@ -543,14 +530,14 @@ document rp_bignum
 end
 
 define rp_class
+  set $class_and_classext = (struct RClass_and_rb_classext_t *)($arg0)
   printf "(struct RClass *) %p", (void*)$arg0
-  if RCLASS_ORIGIN((struct RClass *)($arg0)) != $arg0
-    printf " -> %p", RCLASS_ORIGIN((struct RClass *)($arg0))
+  if $class_and_classext->classext->origin_ != (VALUE)$arg0
+    printf " -> %p", $class_and_classext->classext->origin_
   end
   printf "\n"
   rb_classname $arg0
-  print/x *(struct RClass *)($arg0)
-  print *RCLASS_EXT((struct RClass *)($arg0))
+  print/x *$class_and_classext
 end
 document rp_class
   Print the content of a Class/Module.
@@ -689,11 +676,6 @@ define nd_stts
 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
@@ -868,22 +850,22 @@ define rb_numtable_entry
     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
+        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
+        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
+        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
+        set $rb_numtable_p = $rb_numtable_p->next
       end
     end
   end
@@ -921,10 +903,10 @@ document rb_method_entry
 end
 
 define rb_classname
-  # up to 128bit int
-  set $rb_classname = rb_mod_name($arg0)
-  if $rb_classname != RUBY_Qnil
-    rp $rb_classname
+  set $rb_classname = ((struct RClass_and_rb_classext_t*)$arg0)->classext->classpath
+  if $rb_classname != RUBY_Qfalse
+    print_string $rb_classname
+    printf "\n"
   else
     echo anonymous class/module\n
   end
@@ -961,7 +943,7 @@ define iseq
       set $operand_size = ((INSN*)($arg0))->operand_size
       set $operands = ((INSN*)($arg0))->operands
       while $i < $operand_size
-	rp $operands[$i++]
+        rp $operands[$i++]
       end
     end
   end
@@ -1131,7 +1113,7 @@ 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
+    $ps_thread, $ps_thread_th, $ps_thread_th->nt
   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
@@ -1279,9 +1261,9 @@ document rb_count_objects
   Counts all objects grouped by type.
 end
 
-# Details: https://bugs.ruby-lang.org/projects/ruby-master/wiki/MachineInstructionsTraceWithGDB
+# Details: https://github.com/ruby/ruby/wiki/Machine-Instructions-Trace-with-GDB
 define trace_machine_instructions
-  set logging on
+  set logging enabled
   set height 0
   set width 0
   display/i $pc
@@ -1316,13 +1298,12 @@ define dump_node
   set $flags = ((struct RBasic*)($str))->flags
   printf "%s", (char *)(($flags & RUBY_FL_USER1) ? \
                         ((struct RString*)$str)->as.heap.ptr : \
-                        ((struct RString*)$str)->as.ary)
+                        ((struct RString*)$str)->as.embed.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*)($arg0))->flags & RUBY_FL_PROMOTED1 ? "1" : "0"
+  printf "RUBY_FL_PROMOTED    : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_PROMOTED ? "1" : "0"
   printf "RUBY_FL_FINALIZE    : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_FINALIZE ? "1" : "0"
   printf "RUBY_FL_SHAREABLE   : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_SHAREABLE ? "1" : "0"
   printf "RUBY_FL_EXIVAR      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_EXIVAR ? "1" : "0"
@@ -1348,3 +1329,8 @@ define print_flags
   printf "RUBY_FL_USER17      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER17 ? "1" : "0"
   printf "RUBY_FL_USER18      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER18 ? "1" : "0"
 end
+
+source -s misc/gdb.py
+
+# Moved from beginning, since it fails on older gdbs
+set startup-with-shell off
diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 6c5eac5a0f..d98646febf 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -5,6 +5,12 @@
 
 # Expand tabs
 5b21e94bebed90180d8ff63dad03b8b948361089
+c5e9af9c9d890578182a21e7b71b50334cd5579e
+e63a2115f64433b21cb5dd67c5bf8b30f87ef293
+712ac99e4d0384a941c80a9f48f62943ba7d97c0
+d1474affa8e105bece209cc9d594bb0a989859e1
+2da92388b948821269b18d6b178a680f17e41750
+5062c0c621d887367af8a054e5e5d83d7ec57dd3
 
 # Enable Style/StringLiterals cop for RubyGems/Bundler
 d7ffd3fea402239b16833cc434404a7af82d44f3
@@ -21,3 +27,15 @@ f28287d34c03f472ffe90ea262bdde9affd4b965
 
 # Make benchmark indentation consistent
 fc4acf8cae82e5196186d3278d831f2438479d91
+
+# Make prism_compile.c indentation consistent
+40b2c8e5e7e6e5f83cee9276dc9c1922a69292d6
+d2c5867357ed88eccc28c2b3bd4a46e206e7ff85
+
+# Miss-and-revived commits
+a0f7de814ae5c299d6ce99bed5fb308a05d50ba0
+d4e24021d39e1f80f0055b55d91f8d5f22e15084
+7a56c316418980b8a41fcbdc94067b2bda2ad112
+e90282be7ba1bc8e3119f6e1a2c80356ceb3f80a
+26a9e0b4e31f7b5a9cbd755e0a15823a8fa51bae
+2f53985da9ee593fe524d408256835667938c7d7
diff --git a/.gitattributes b/.gitattributes
index d0c2d266b4..6ac6e6fcc3 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,5 +1,6 @@
 *.gemspec diff=ruby
 *.rb diff=ruby
+*.inc.rs linguist-generated=true
 bin svn-properties=svn:ignore=ruby
 bin/* diff=ruby
 tool/update-deps diff=ruby
diff --git a/.github/actions/capiext/action.yml b/.github/actions/capiext/action.yml
new file mode 100644
index 0000000000..49562725f4
--- /dev/null
+++ b/.github/actions/capiext/action.yml
@@ -0,0 +1,86 @@
+name: rubyspec C-API extensions
+
+inputs:
+  builddir:
+    required: false
+    default: '.'
+  make:
+    required: false
+    default: 'make -s'
+
+outputs:
+  key:
+    value: >-
+      ${{
+      !steps.restore.outputs.cache-hit &&
+      github.ref == 'refs/heads/master' &&
+      steps.config.outputs.key
+      }}
+
+runs:
+  using: composite
+
+  steps:
+    - id: config
+      shell: bash
+      run: |
+        eval $(grep -e '^arch *=' -e '^ruby_version *=' -e '^DLEXT *=' Makefile |
+            sed 's/ *= */=/')
+        case "${ruby_version}" in
+        *+*) key=capiexts-${arch}-${ruby_version}-${{ hashFiles('src/spec/ruby/optional/capi/ext/*.[ch]') }};;
+        *)   key=;;
+        esac
+        echo version=$ruby_version >> $GITHUB_OUTPUT
+        echo key="$key" >> $GITHUB_OUTPUT
+        echo DLEXT=$DLEXT >> $GITHUB_OUTPUT
+      working-directory: ${{ inputs.builddir }}
+
+    - name: Restore previous CAPI extensions
+      uses: actions/cache/restore@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
+      id: cache
+      with:
+        path: ${{ inputs.builddir }}/spec/ruby/optional/capi/ext/
+        key: ${{ steps.config.outputs.key }}
+      if: ${{ steps.config.outputs.key }}
+
+    - name: Run test-spec with previous CAPI extension binaries
+      id: check
+      shell: bash
+      run: |
+        touch spec/ruby/optional/capi/ext/*.$DLEXT
+        [ ! -f spec/ruby/optional/capi/ext/\*.$DLEXT ]
+        ${{ inputs.make }} SPECOPTS=optional/capi test-spec
+      env:
+        DLEXT: ${{ steps.config.outputs.DLEXT }}
+      working-directory: ${{ inputs.builddir }}
+      if: ${{ steps.cache.outputs.cache-hit }}
+
+    - name: Strip CAPI extensions
+      id: strip
+      shell: bash
+      run: |
+        rm -f spec/ruby/optional/capi/ext/*.c
+        [ "$DLEXT" = bundle ] || # separated to .dSYM directories
+        strip spec/ruby/optional/capi/ext/*.$DLEXT
+      env:
+        DLEXT: ${{ steps.config.outputs.DLEXT }}
+      working-directory: ${{ inputs.builddir }}
+      if: >-
+        ${{true
+        && ! steps.cache.outputs.cache-hit
+        && github.ref_name == 'master'
+        }}
+
+    - name: Save CAPI extensions
+      uses: actions/cache/save@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
+      with:
+        path: ${{ inputs.builddir }}/spec/ruby/optional/capi/ext/
+        key: ${{ steps.config.outputs.key }}
+      if: ${{ steps.strip.outcome == 'success' }}
+
+    - shell: bash
+      run: |
+        echo "::error::Change from ${prev} detected; bump up ABI version"
+      env:
+        prev: ${{ steps.config.outputs.version }}
+      if: ${{ always() && steps.check.outcome == 'failure' }}
diff --git a/.github/actions/compilers/action.yml b/.github/actions/compilers/action.yml
new file mode 100644
index 0000000000..ab5b56a889
--- /dev/null
+++ b/.github/actions/compilers/action.yml
@@ -0,0 +1,133 @@
+name: Compiles ruby in a container
+description: >-
+  Makes ruby using a dedicated container
+
+inputs:
+  tag:
+    required: false
+    default: clang-20
+    description: >-
+      container image tag to use in this run.
+
+  with_gcc:
+    required: false
+    description: >-
+      override compiler path & flags.
+
+  CFLAGS:
+    required: false
+    description: >-
+      C compiler flags to override.
+
+  CXXFLAGS:
+    required: false
+    description: >-
+      C++ compiler flags to override.
+
+  optflags:
+    required: false
+    # -O1 is faster than -O3 in our tests... Majority of time are consumed trying
+    # to optimize binaries.  Also GitHub Actions run on relatively modern CPUs
+    # compared to, say, GCC 4 or Clang 3.  We don't specify `-march=native`
+    # because compilers tend not understand what the CPU is.
+    default: '-O1'
+    description: >-
+      Compiler flags for optimisations.
+
+  cppflags:
+    required: false
+    description: >-
+      Additional preprocessor flags.
+
+  append_configure:
+    required: false
+    default: >-
+      --without-valgrind
+      --without-jemalloc
+      --without-gmp
+    description: >-
+      flags to append to configure.
+
+  enable_shared:
+    required: false
+    default: true
+    description: >-
+      Whether to build libruby.so.
+
+  check:
+    required: false
+    default: ''
+    description: >-
+      Whether to run `make check`
+
+  test_all:
+    required: false
+    default: ''
+    description: >-
+      Whether to run `make test-all` with options for test-all.
+
+  test_spec:
+    required: false
+    default: ''
+    description: >-
+      Whether to run `make test-spec` with options for mspec.
+
+  static_exts:
+    required: false
+    description: >-
+      whitespace separated list of extensions that need be linked statically.
+
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: docker pull --quiet 'ghcr.io/ruby/ruby-ci-image:${{ inputs.tag }}'
+
+    - name: Enable Launchable conditionally
+      id: enable-launchable
+      run: echo "enable-launchable=true" >> $GITHUB_OUTPUT
+      shell: bash
+      if: >-
+        ${{
+        github.repository == 'ruby/ruby' ||
+        (github.repository != 'ruby/ruby' && env.LAUNCHABLE_TOKEN)
+        }}
+
+    - name: compile
+      shell: bash
+      run: >-
+        docker run
+        --rm
+        --user=root
+        --volume '${{ github.workspace }}:/github/workspace:ro'
+        --workdir=/github/workspace
+        --entrypoint=/github/workspace/.github/actions/compilers/entrypoint.sh
+        --env CI
+        --env GITHUB_ACTION
+        --env INPUT_WITH_GCC='${{ inputs.with_gcc || inputs.tag }}'
+        --env INPUT_CFLAGS='${{ inputs.CFLAGS }}'
+        --env INPUT_CXXFLAGS='${{ inputs.CXXFLAGS }}'
+        --env INPUT_OPTFLAGS='${{ inputs.OPTFLAGS }}'
+        --env INPUT_CPPFLAGS='${{ inputs.cppflags }}'
+        --env INPUT_APPEND_CONFIGURE='${{ inputs.append_configure }}'
+        --env INPUT_CHECK='${{ inputs.check }}'
+        --env INPUT_TEST_ALL='${{ inputs.test_all }}'
+        --env INPUT_TEST_SPEC='${{ inputs.test_spec }}'
+        --env INPUT_ENABLE_SHARED='${{ inputs.enable_shared }}'
+        --env INPUT_STATIC_EXTS='${{ inputs.static_exts }}'
+        --env LAUNCHABLE_ORGANIZATION='${{ github.repository_owner }}'
+        --env LAUNCHABLE_WORKSPACE='${{ github.event.repository.name }}'
+        --env LAUNCHABLE_ENABLED='${{ steps.enable-launchable.outputs.enable-launchable || false }}'
+        --env GITHUB_PR_HEAD_SHA='${{ github.event.pull_request.head.sha || github.sha }}'
+        --env GITHUB_PULL_REQUEST_URL='${{ github.event.pull_request.html_url }}'
+        --env GITHUB_REF='${{ github.ref }}'
+        --env GITHUB_ACTIONS
+        --env GITHUB_RUN_ID
+        --env GITHUB_REPOSITORY
+        --env GITHUB_WORKFLOW
+        --env GITHUB_RUN_NUMBER
+        --env GITHUB_EVENT_NAME
+        --env GITHUB_SHA
+        --env GITHUB_HEAD_REF
+        --env GITHUB_SERVER_URL
+        'ghcr.io/ruby/ruby-ci-image:${{ inputs.tag }}'
diff --git a/.github/actions/compilers/entrypoint.sh b/.github/actions/compilers/entrypoint.sh
new file mode 100755
index 0000000000..b554151091
--- /dev/null
+++ b/.github/actions/compilers/entrypoint.sh
@@ -0,0 +1,90 @@
+#! /bin/bash
+
+# Copyright (c) 2024 Ruby developers.  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.
+
+grouped()
+{
+    echo "::group::${@}"
+    "${@}"
+    echo "::endgroup::"
+}
+
+set -e
+set -u
+set -o pipefail
+
+srcdir="/github/workspace/src"
+builddir="$(mktemp -dt)"
+
+export GITHUB_WORKFLOW='Compilations'
+export CONFIGURE_TTY='never'
+export RUBY_DEBUG='ci rgengc'
+export RUBY_TESTOPTS='-q --color=always --tty=no'
+export RUBY_DEBUG_COUNTER_DISABLE='1'
+export GNUMAKEFLAGS="-j$((1 + $(nproc)))"
+
+case "x${INPUT_ENABLE_SHARED}" in
+x | xno | xfalse )
+    enable_shared='--disable-shared'
+    ;;
+*)
+    enable_shared='--enable-shared'
+    ;;
+esac
+
+pushd ${builddir}
+
+grouped git config --global --add safe.directory ${srcdir}
+
+grouped ${srcdir}/configure        \
+    -C                             \
+    --with-gcc="${INPUT_WITH_GCC}" \
+    --enable-debug-env             \
+    --disable-install-doc          \
+    --with-ext=-test-/cxxanyargs,+ \
+    --without-git                  \
+    ${enable_shared}               \
+    ${INPUT_APPEND_CONFIGURE}      \
+    CFLAGS="${INPUT_CFLAGS}"       \
+    CXXFLAGS="${INPUT_CXXFLAGS}"   \
+    optflags="${INPUT_OPTFLAGS}"   \
+    cppflags="${INPUT_CPPFLAGS}"   \
+    debugflags='-ggdb3' # -g0 disables backtraces when SEGV.  Do not set that.
+
+popd
+
+if [[ -n "${INPUT_STATIC_EXTS}" ]]; then
+    echo "::group::ext/Setup"
+    set -x
+    mkdir ${builddir}/ext
+    (
+        for ext in ${INPUT_STATIC_EXTS}; do
+            echo "${ext}"
+        done
+    ) >> ${builddir}/ext/Setup
+    set +x
+    echo "::endgroup::"
+fi
+
+if [ -n "$INPUT_TEST_ALL" ]; then
+  tests=" -- $INPUT_TEST_ALL"
+else
+  tests=" -- ruby -ext-"
+fi
+
+pushd ${builddir}
+
+grouped make showflags
+grouped make all
+# grouped make install
+
+# Run only `make test` by default. Run other tests if specified.
+grouped make test
+if [[ -n "$INPUT_CHECK" ]]; then grouped make test-tool; fi
+if [[ -n "$INPUT_CHECK" || -n "$INPUT_TEST_ALL" ]]; then grouped make test-all TESTS="$tests"; fi
+if [[ -n "$INPUT_CHECK" || -n "$INPUT_TEST_SPEC" ]]; then grouped env CHECK_LEAKS=true make test-spec MSPECOPT="$INPUT_TEST_SPEC"; fi
diff --git a/.github/actions/launchable/setup/action.yml b/.github/actions/launchable/setup/action.yml
new file mode 100644
index 0000000000..16af8fc3fd
--- /dev/null
+++ b/.github/actions/launchable/setup/action.yml
@@ -0,0 +1,313 @@
+name: Set up Launchable
+description: >-
+  Install the required dependencies and execute the necessary Launchable commands for test recording
+
+inputs:
+  os:
+    required: true
+    description: The operating system that CI runs on. This value is used in Launchable flavor.
+
+  test-opts:
+    default: none
+    required: false
+    description: >-
+      Test options that determine how tests are run.
+      This value is used in the Launchable flavor.
+
+  launchable-token:
+    required: false
+    description: >-
+      Launchable token is needed if you want to run Launchable on your forked repository.
+      See https://github.com/ruby/ruby/wiki/CI-Servers#launchable-ci for details.
+
+  builddir:
+    required: false
+    default: ${{ github.workspace }}
+    description: >-
+      Directory to create Launchable report file.
+
+  srcdir:
+    required: false
+    default: ${{ github.workspace }}
+    description: >-
+      Directory to (re-)checkout source codes. Launchable retrieves the commit information
+      from the directory.
+
+  test-task:
+    required: false
+    default: ${{ matrix.test_task }}
+    description: >-
+      Specifies a single test task to be executed.
+      This value is used in the Launchable flavor.
+      Either 'test-task' or 'multi-test-tasks' must be configured.
+
+  test-tasks:
+    required: false
+    default: '[]'
+    description: >-
+      Specifies an array of multiple test tasks to be executed.
+      For example: '["test", "test-all"]'.
+      If you want to run a single test task, use the 'test-task' input instead.
+
+  is-yjit:
+    required: false
+    default: 'false'
+    description: >-
+      Whether this workflow is executed on YJIT.
+
+outputs:
+  stdout_report_path:
+    value: ${{ steps.global.outputs.stdout_report_path }}
+    description: >-
+      Report file path for standard output.
+
+  stderr_report_path:
+    value: ${{ steps.global.outputs.stderr_report_path }}
+    description: >-
+      Report file path for standard error.
+
+runs:
+  using: composite
+
+  steps:
+    - name: Enable Launchable conditionally
+      id: enable-launchable
+      run: echo "enable-launchable=true" >> $GITHUB_OUTPUT
+      shell: bash
+      if: >-
+        ${{
+        (github.repository == 'ruby/ruby'
+          || (github.repository != 'ruby/ruby'
+          && env.LAUNCHABLE_TOKEN))
+        && (inputs.test-task == 'check'
+          || inputs.test-task == 'test-all'
+          || inputs.test-task == 'test'
+          || contains(fromJSON(inputs.test-tasks), 'test-all')
+          || contains(fromJSON(inputs.test-tasks), 'test'))
+        }}
+
+    # Launchable CLI requires Python and Java.
+    # https://www.launchableinc.com/docs/resources/cli-reference/
+    - name: Set up Python
+      uses: actions/setup-python@871daa956ca9ea99f3c3e30acb424b7960676734 # v5.0.0
+      with:
+        python-version: "3.x"
+      if: >-
+        ${{ steps.enable-launchable.outputs.enable-launchable
+        && !endsWith(inputs.os, 'ppc64le') && !endsWith(inputs.os, 's390x') }}
+
+    - name: Set up Java
+      uses: actions/setup-java@7a445ee88d4e23b52c33fdc7601e40278616c7f8 # v4.0.0
+      with:
+        distribution: 'temurin'
+        java-version: '17'
+      if: >-
+        ${{ steps.enable-launchable.outputs.enable-launchable
+        && !endsWith(inputs.os, 'ppc64le') && !endsWith(inputs.os, 's390x') }}
+
+    - name: Set up Java ppc64le
+      uses: actions/setup-java@7a445ee88d4e23b52c33fdc7601e40278616c7f8 # v4.0.0
+      with:
+        distribution: 'semeru'
+        architecture: 'ppc64le'
+        java-version: '17'
+      if: >-
+        ${{ steps.enable-launchable.outputs.enable-launchable
+        && endsWith(inputs.os, 'ppc64le') }}
+
+    - name: Set up Java s390x
+      uses: actions/setup-java@7a445ee88d4e23b52c33fdc7601e40278616c7f8 # v4.0.0
+      with:
+        distribution: 'semeru'
+        architecture: 's390x'
+        java-version: '17'
+      if: >-
+        ${{ steps.enable-launchable.outputs.enable-launchable
+        && endsWith(inputs.os, 's390x') }}
+
+    - name: Set global vars
+      id: global
+      shell: bash
+      run: |
+        test_all_enabled="${{ inputs.test-task == 'check' ||  inputs.test-task == 'test-all' || contains(fromJSON(inputs.test-tasks), 'test-all') }}"
+        btest_enabled="${{ inputs.test-task == 'check' ||  inputs.test-task == 'test' || contains(fromJSON(inputs.test-tasks), 'test') }}"
+        test_spec_enabled="${{ inputs.test-task == 'check' ||  inputs.test-task == 'test-spec' || contains(fromJSON(inputs.test-tasks), 'test-spec') }}"
+        echo test_all_enabled="${test_all_enabled}" >> $GITHUB_OUTPUT
+        echo btest_enabled="${btest_enabled}" >> $GITHUB_OUTPUT
+        echo test_spec_enabled="${test_spec_enabled}" >> $GITHUB_OUTPUT
+        echo test_all_report_file='launchable_test_all_report.json' >> $GITHUB_OUTPUT
+        echo btest_report_file='launchable_btest_report.json' >> $GITHUB_OUTPUT
+        echo test_spec_report_dir='launchable_test_spec_report' >> $GITHUB_OUTPUT
+        echo stdout_report_path="launchable_stdout.log" >> $GITHUB_OUTPUT
+        echo stderr_report_path="launchable_stderr.log" >> $GITHUB_OUTPUT
+      if: steps.enable-launchable.outputs.enable-launchable
+
+    - name: Set environment variables for Launchable
+      shell: bash
+      run: |
+        : # GITHUB_PULL_REQUEST_URL are used for commenting test reports in Launchable Github App.
+        : # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/link.py#L42
+        echo "GITHUB_PULL_REQUEST_URL=${{ github.event.pull_request.html_url }}" >> $GITHUB_ENV
+        : # The following envs are necessary in Launchable tokenless authentication.
+        : # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L20
+        echo "LAUNCHABLE_ORGANIZATION=${{ github.repository_owner }}" >> $GITHUB_ENV
+        echo "LAUNCHABLE_WORKSPACE=${{ github.event.repository.name }}" >> $GITHUB_ENV
+        : # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L71
+        echo "GITHUB_PR_HEAD_SHA=${{ github.event.pull_request.head.sha || github.sha }}" >> $GITHUB_ENV
+        echo "LAUNCHABLE_TOKEN=${{ inputs.launchable-token }}" >> $GITHUB_ENV
+        : # To prevent a slowdown in CI, disable request retries when the Launchable server is unstable.
+        echo "LAUNCHABLE_SKIP_TIMEOUT_RETRY=1" >> $GITHUB_ENV
+        echo "LAUNCHABLE_COMMIT_TIMEOUT=1" >> $GITHUB_ENV
+      if: steps.enable-launchable.outputs.enable-launchable
+
+    - name: Set up path
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      # Since updated PATH variable will be available in only subsequent actions, we need to add the path beforehand.
+      # https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#adding-a-system-path
+      run: echo "$(python -msite --user-base)/bin" >> $GITHUB_PATH
+      if: >-
+        ${{
+        steps.enable-launchable.outputs.enable-launchable
+        && (startsWith(inputs.os, 'macos')
+          || endsWith(inputs.os, 'ppc64le')
+          || endsWith(inputs.os, 's390x'))
+        }}
+
+    - name: Set up Launchable
+      id: setup-launchable
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      run: |
+        set -x
+        pip install --user launchable
+        : # The build name cannot include a slash, so we replace the string here.
+        github_ref="${{ github.ref }}"
+        github_ref="${github_ref//\//_}"
+        : # With the --name option, we need to configure a unique identifier for this build.
+        : # To avoid setting the same build name as the CI which runs on other branches, we use the branch name here.
+        build_name="${github_ref}_${GITHUB_PR_HEAD_SHA}"
+        test_opts="${{ inputs.test-opts }}"
+        test_opts="${test_opts// /}"
+        test_opts="${test_opts//=/:}"
+        test_all_test_suite='test-all'
+        btest_test_suite='btest'
+        test_spec_test_suite='test-spec'
+        if [ "${{ inputs.is-yjit }}" = "true" ]; then
+          test_all_test_suite="yjit-${test_all_test_suite}"
+          btest_test_suite="yjit-${btest_test_suite}"
+          test_spec_test_suite="yjit-${test_spec_test_suite}"
+        fi
+        # launchable_setup target var -- refers ${target} prefixed variables
+        launchable_setup() {
+          local target=$1 session
+          eval [ "\${${target}_enabled}" = "true" ] || return
+          eval local suite=\${${target}_test_suite}
+          session=$(launchable record session \
+            --build "${build_name}" \
+            --observation \
+            --flavor os="${{ inputs.os }}" \
+            --flavor test_task="${{ inputs.test-task }}" \
+            --flavor test_opts="${test_opts}" \
+            --flavor workflow="${{ github.workflow }}" \
+            --test-suite ${suite} \
+            )
+          echo "${target}_session=${session}" >> $GITHUB_OUTPUT
+        }
+
+        launchable record build --name "${build_name}"
+        if launchable_setup test_all; then
+          echo "TESTS=${TESTS:+$TESTS }--launchable-test-reports=${test_all_report_file}" >> $GITHUB_ENV
+        fi
+        if launchable_setup btest; then
+          echo "BTESTS=${BTESTS:+$BTESTS }--launchable-test-reports=${btest_report_file}" >> $GITHUB_ENV
+        fi
+        if launchable_setup test_spec; then
+          echo "SPECOPTS=${SPECOPTS:$SPECOPTS }--launchable-test-reports=${test_spec_report_dir}" >> $GITHUB_ENV
+          echo test_spec_enabled=true >> $GITHUB_OUTPUT
+        fi
+
+        echo launchable_setup_dir=$(pwd) >> $GITHUB_OUTPUT
+      if: steps.enable-launchable.outputs.enable-launchable
+      env:
+        test_all_enabled: ${{ steps.global.outputs.test_all_enabled }}
+        btest_enabled: ${{ steps.global.outputs.btest_enabled }}
+        test_spec_enabled: ${{ steps.global.outputs.test_spec_enabled }}
+        test_all_report_file: ${{ steps.global.outputs.test_all_report_file }}
+        btest_report_file: ${{ steps.global.outputs.btest_report_file }}
+        test_spec_report_dir: ${{ steps.global.outputs.test_spec_report_dir }}
+
+    - name: make test-spec report directory in build directory
+      shell: bash
+      working-directory: ${{ inputs.builddir }}
+      run: mkdir "${test_spec_report_dir}"
+      if: ${{ steps.setup-launchable.outputs.test_spec_enabled == 'true' }}
+      env:
+        test_spec_report_dir: ${{ steps.global.outputs.test_spec_report_dir }}
+
+    - name: Clean up test results in Launchable
+      uses: gacts/run-and-post-run@674528335da98a7afc80915ff2b4b860a0b3553a # v1.4.0
+      with:
+        shell: bash
+        working-directory: ${{ inputs.builddir }}
+        post: |
+          rm -f "${test_all_report_file}"
+          rm -f "${btest_report_file}"
+          rm -fr "${test_spec_report_dir}"
+          rm -f launchable_stdout.log
+          rm -f launchable_stderr.log
+      if: always() && steps.setup-launchable.outcome == 'success'
+      env:
+        test_all_report_file: ${{ steps.global.outputs.test_all_report_file }}
+        btest_report_file: ${{ steps.global.outputs.btest_report_file }}
+        test_spec_report_dir: ${{ steps.global.outputs.test_spec_report_dir }}
+
+    - name: Record test results in Launchable
+      uses: gacts/run-and-post-run@674528335da98a7afc80915ff2b4b860a0b3553a # v1.4.0
+      with:
+        shell: bash
+        working-directory: ${{ inputs.builddir }}
+        post: |
+          if [[ "${test_all_enabled}" = "true" ]]; then \
+            launchable record attachment \
+              --session "${test_all_session}" \
+              "${stdout_report_path}" \
+              "${stderr_report_path}"; \
+            launchable record tests \
+              --session "${test_all_session}" \
+              raw "${test_all_report_file}" || true; \
+          fi
+
+          if [[ "${btest_enabled}" = "true" ]]; then \
+            launchable record attachment \
+              --session "${btest_session}" \
+              "${stdout_report_path}" \
+              "${stderr_report_path}"; \
+            launchable record tests \
+              --session "${btest_session}" \
+              raw "${btest_report_file}" || true; \
+          fi
+
+          if [[ "${test_spec_enabled}" = "true" ]]; then \
+            launchable record attachment \
+              --session "${test_spec_session}" \
+              "${stdout_report_path}" \
+              "${stderr_report_path}"; \
+            launchable record tests \
+              --session "${test_spec_session}" \
+              raw ${test_spec_report_dir}/* || true; \
+          fi
+      if: ${{ always() && steps.setup-launchable.outcome == 'success' }}
+      env:
+        test_all_report_file: ${{ steps.global.outputs.test_all_report_file }}
+        btest_report_file: ${{ steps.global.outputs.btest_report_file }}
+        test_spec_report_dir: ${{ steps.global.outputs.test_spec_report_dir }}
+        test_all_enabled: ${{ steps.global.outputs.test_all_enabled }}
+        btest_enabled: ${{ steps.global.outputs.btest_enabled }}
+        test_spec_enabled: ${{ steps.global.outputs.test_spec_enabled }}
+        test_all_session: ${{ steps.setup-launchable.outputs.test_all_session }}
+        btest_session: ${{ steps.setup-launchable.outputs.btest_session }}
+        test_spec_session: ${{ steps.setup-launchable.outputs.test_spec_session }}
+        stdout_report_path: ${{ steps.global.outputs.stdout_report_path }}
+        stderr_report_path: ${{ steps.global.outputs.stderr_report_path }}
+        LAUNCHABLE_SETUP_DIR: ${{ steps.setup-launchable.outputs.launchable_setup_dir }}
diff --git a/.github/actions/setup/directories/action.yml b/.github/actions/setup/directories/action.yml
new file mode 100644
index 0000000000..0e8ffd59ef
--- /dev/null
+++ b/.github/actions/setup/directories/action.yml
@@ -0,0 +1,194 @@
+name: Setup directories etc.
+description: >-
+  Set up the source code and build directories (plus some
+  environmental tweaks)
+
+inputs:
+  srcdir:
+    required: false
+    default: ${{ github.workspace }}
+    description: >-
+      Directory to (re-)checkout source codes.  This will be created
+      if absent.  If there is no `configure` file that is also
+      generated inside.
+
+  builddir:
+    required: false
+    default: ${{ github.workspace }}
+    description: >-
+      Where binaries and other generated contents go.  This will be
+      created if absent.
+
+  make-command:
+    required: false
+    type: string
+    default: 'make'
+    description: >-
+      The command of `make`.
+
+  makeup:
+    required: false
+    type: boolean
+    # Note that `default: false` evaluates to a string constant
+    # `'false'`, which is a truthy value :sigh:
+    # https://github.com/actions/runner/issues/2238
+    default: ''
+    description: >-
+      If set to true, additionally runs `make up`.
+
+  checkout:
+    required: false
+    type: boolean
+    default: true
+    description: >-
+      If set to '' (false), skip running actions/checkout. This is useful when
+      you don't want to overwrite a GitHub token that is already set up.
+
+  dummy-files:
+    required: false
+    type: boolean
+    default: ''
+    description: >-
+      If set to true, creates dummy files in build dir.
+
+  fetch-depth:
+    required: false
+    default: '1'
+    description: The depth of commit history fetched from the remote repository
+
+  clean:
+    required: false
+    type: boolean
+    default: ''
+    description: >-
+      If set to true, clean build directory.
+
+outputs: {} # nothing?
+
+runs:
+  using: composite
+
+  steps:
+    # Note that `shell: bash` works on both Windows and Linux, but not
+    # `shell: sh`.  This is because GitHub hosted Windows runners have
+    # their bash manually installed.
+    - shell: bash
+      run: |
+        mkdir -p ${{ inputs.srcdir }}
+        mkdir -p ${{ inputs.builddir }}
+
+    # Did you know that actions/checkout works without git(1)?  We are
+    # checking that here.
+    - id: which
+      shell: bash
+      run: |
+        echo "git=`command -v git`" >> "$GITHUB_OUTPUT"
+        echo "sudo=`sudo true && command -v sudo`" >> "$GITHUB_OUTPUT"
+        echo "autoreconf=`command -v autoreconf`" >> "$GITHUB_OUTPUT"
+
+    - if: steps.which.outputs.git
+      shell: bash
+      run: |
+        git config --global core.autocrlf false
+        git config --global core.eol lf
+        git config --global advice.detachedHead 0
+        git config --global init.defaultBranch garbage
+
+    - if: inputs.checkout
+      uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+      with:
+        path: ${{ inputs.srcdir }}
+        fetch-depth: ${{ inputs.fetch-depth }}
+
+    - uses: actions/cache@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5.0.2
+      with:
+        path: ${{ inputs.srcdir }}/.downloaded-cache
+        key: ${{ runner.os }}-${{ runner.arch }}-downloaded-cache
+
+    - if: steps.which.outputs.autoreconf
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      run: ./autogen.sh --install
+
+    # This is for MinGW.
+    - if: runner.os == 'Windows'
+      shell: bash
+      run: echo "GNUMAKEFLAGS=-j$((2 * NUMBER_OF_PROCESSORS))" >> $GITHUB_ENV
+
+    - if: runner.os == 'Linux'
+      shell: bash
+      run: echo "GNUMAKEFLAGS=-sj$((1 + $(nproc)))" >> "$GITHUB_ENV"
+
+    # macOS' GNU make is so old that they doesn't understand `GNUMAKEFLAGS`.
+    - if: runner.os == 'macOS'
+      shell: bash
+      run: echo "MAKEFLAGS=-j$((1 + $(sysctl -n hw.activecpu)))" >> "$GITHUB_ENV"
+
+    - if: inputs.makeup
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      run: |
+        touch config.status .rbconfig.time
+        for mk in Makefile GNUmakefile; do
+          sed -f tool/prereq.status template/$mk.in > $mk
+        done
+        make up
+
+    # Cleanup, runs even on failure
+    - if: always() && inputs.makeup
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      run: |
+        rm -f config.status .rbconfig.time \
+          Makefile GNUmakefile uncommon.mk enc.mk noarch-fake.rb
+
+    - if: steps.which.outputs.sudo
+      shell: bash
+      run: |
+        sudo chmod -R go-w /usr/share
+        chmod -v go-w $HOME $HOME/.config || :
+        declare -a dirs # -A is not supported by old bash, e.g. macos
+        SAVE_IFS="$IFS" IFS=:; set $PATH
+        for d do
+          while [ -d "$d" ]; do
+            case "$IFS${dirs[*]}$IFS" in *"$IFS$d$IFS"*) ;; *) dirs+=("$d");; esac
+            d="${d%/*}"
+          done
+        done
+        IFS="$SAVE_IFS"
+        sudo chmod -v go-w "${dirs[@]}" || :
+
+    - if: inputs.dummy-files == 'true'
+      shell: bash
+      id: dummy-files
+      working-directory: ${{ inputs.builddir }}
+      run: |
+        : Create dummy files in build dir
+        set {{a..z},{A..Z},{0..9},foo,bar,test,zzz}.rb
+        for file; do \
+          echo > $file "raise 'do not load $file'"; \
+        done
+        # drop {a..z}.rb if case-insensitive filesystem
+        grep -F A.rb a.rb > /dev/null && set "${@:27}"
+        echo clean="cd ${{ inputs.builddir }} && rm $*" >> $GITHUB_OUTPUT
+
+    - if: inputs.clean == 'true'
+      shell: bash
+      id: clean
+      run: |
+        echo distclean='cd ${{ inputs.builddir }} && ${{ inputs.make-command }} distclean' >> $GITHUB_OUTPUT
+        echo remained-files='find ${{ inputs.builddir }} -ls' >> $GITHUB_OUTPUT
+        [ "${{ inputs.builddir }}" = "${{ inputs.srcdir }}" ] ||
+        echo final='rmdir ${{ inputs.builddir }}' >> $GITHUB_OUTPUT
+
+    - name: clean
+      uses: gacts/run-and-post-run@81b6ce503cde93862cec047c54652e45c5dca991 # v1.4.3
+      with:
+        working-directory:
+        post: |
+          ${{ steps.dummy-files.outputs.clean }}
+          ${{ steps.clean.outputs.distclean }}
+          ${{ steps.clean.outputs.remained-files }}
+          ${{ steps.clean.outputs.final }}
+      # rmdir randomly fails due to launchable files
+      continue-on-error: true
diff --git a/.github/actions/setup/macos/action.yml b/.github/actions/setup/macos/action.yml
new file mode 100644
index 0000000000..d0072ff828
--- /dev/null
+++ b/.github/actions/setup/macos/action.yml
@@ -0,0 +1,29 @@
+name: Setup macOS environment
+description: >-
+  Installs necessary packages via Homebrew.
+
+inputs: {} # nothing?
+
+outputs: {} # nothing?
+
+runs:
+  using: composite
+
+  steps:
+    - name: brew
+      shell: bash
+      run: |
+        brew install --quiet jemalloc gmp libffi openssl@3 zlib autoconf automake libtool
+
+    - name: Set ENV
+      shell: bash
+      run: |
+        dir_config() {
+          local args=() lib var="$1"; shift
+          for lib in "$@"; do
+            args+=("--with-${lib%@*}-dir=$(brew --prefix $lib)")
+          done
+          echo "$var=${args[*]}" >> $GITHUB_ENV
+        }
+        dir_config ruby_configure_args gmp
+        dir_config CONFIGURE_ARGS openssl@3
diff --git a/.github/actions/setup/ubuntu/action.yml b/.github/actions/setup/ubuntu/action.yml
new file mode 100644
index 0000000000..a9e5b41951
--- /dev/null
+++ b/.github/actions/setup/ubuntu/action.yml
@@ -0,0 +1,53 @@
+name: Setup ubuntu environment
+description: >-
+  At the beginning there was no way but to copy & paste `apt-get`
+  everywhere.  But now that we have composite actions, it seems better
+  merge them into one.
+
+inputs:
+  arch:
+    required: false
+    default: ''
+    description: >-
+      Architecture.  Because we run this on a GitHub-hosted runner
+      acceptable value for this input is very limited.
+
+outputs:
+  arch:
+    value: ${{ steps.uname.outputs.uname }}
+    description: >-
+      Actual architecture.  This could be different from the one
+      passed to the `inputs.arch`.  For instance giving `i386` to this
+      action yields `i686`.
+
+runs:
+  using: composite
+
+  steps:
+    - name: set SETARCH
+      shell: bash
+      run: echo "SETARCH=${setarch}" >> "$GITHUB_ENV"
+      env:
+        setarch: ${{ inputs.arch && format('setarch {0} --', inputs.arch) }}
+
+    - id: uname
+      name: uname
+      shell: bash
+      run: |
+        echo uname=`${SETARCH} uname -m` >> "$GITHUB_OUTPUT"
+        echo dpkg=`${SETARCH} uname -m | sed s/686/386/` >> "$GITHUB_OUTPUT"
+
+    - name: apt-get
+      shell: bash
+      env:
+        arch: ${{ inputs.arch && format(':{0}', steps.uname.outputs.dpkg) || '' }}
+      run: |
+        set -x
+        ${arch:+sudo dpkg --add-architecture ${arch#:}}
+        sudo apt-get update -qq || :
+        sudo apt-get install --no-install-recommends -qq -y -o=Dpkg::Use-Pty=0 \
+        ${arch:+cross}build-essential${arch/:/-} \
+        libssl-dev${arch} libyaml-dev${arch} libreadline6-dev${arch} \
+        zlib1g-dev${arch} libncurses5-dev${arch} libffi-dev${arch} \
+        autoconf ruby
+        sudo apt-get install -qq -y pkg-config${arch} || :
diff --git a/.github/actions/slack/action.yml b/.github/actions/slack/action.yml
new file mode 100644
index 0000000000..4a398da1d1
--- /dev/null
+++ b/.github/actions/slack/action.yml
@@ -0,0 +1,51 @@
+name: Post a message to slack
+description: >-
+  We have our ruby/action-slack webhook.  However its arguments are
+  bit verbose to be listed in every workflow files.  Better merge them
+  into one.
+
+inputs:
+  SLACK_WEBHOOK_URL:
+    required: true
+    description: >-
+      The URL to post the payload.  This is an input because it tends
+      to be stored in a secrets vault and a composite action cannot
+      look into one.
+
+  label:
+    required: false
+    description: >-
+      Human-readable description of the run, something like "DEBUG=1".
+      This need not be unique among runs.
+
+  event_name:
+    required: false
+    default: 'push'
+    description: >-
+      Target event to trigger notification. Notify only push by default.
+
+  extra_channel_id:
+    required: false
+    description: >-
+      Slack channel ID to notify besides #alerts and #alerts-emoji.
+
+outputs: {} # Nothing?
+
+runs:
+  using: composite
+
+  steps:
+    - uses: ruby/action-slack@54175162371f1f7c8eb94d7c8644ee2479fcd375 # v3.2.2
+      with:
+        payload: |
+          {
+            "ci": "GitHub Actions",
+            "env": "${{ github.workflow }}${{ inputs.label && format(' / {0}', inputs.label) }}",
+            "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+            "commit": "${{ github.sha }}",
+            "branch": "${{ github.ref_name }}"
+            ${{ inputs.extra_channel_id && format(', "extra_channel_id": "{0}"', inputs.extra_channel_id) }}
+          }
+      env:
+        SLACK_WEBHOOK_URL: ${{ inputs.SLACK_WEBHOOK_URL }}
+      if: ${{ github.event_name == inputs.event_name && startsWith(github.repository, 'ruby/') }}
diff --git a/.github/auto_request_review.yml b/.github/auto_request_review.yml
index d058b6ca00..38496d5ceb 100644
--- a/.github/auto_request_review.yml
+++ b/.github/auto_request_review.yml
@@ -1,9 +1,20 @@
 files:
-  'yjit*': [team:yjit]
-  'yjit/**/*': [team:yjit]
-  'doc/yjit/*': [team:yjit]
-  'bootstraptest/test_yjit*': [team:yjit]
-  'test/ruby/test_yjit*': [team:yjit]
-  '.github/workflows/yjit*': [team:yjit]
+  'yjit*': [team:jit]
+  'yjit/**/*': [team:jit]
+  'yjit/src/cruby_bindings.inc.rs': []
+  'bootstraptest/test_yjit*': [team:jit]
+  'test/ruby/test_yjit*': [team:jit]
+  'zjit*': [team:jit]
+  'zjit/**/*': [team:jit]
+  'zjit/src/cruby_bindings.inc.rs': []
+  'test/ruby/test_zjit*': [team:jit]
+  'defs/jit.mk': [team:jit]
+  'tool/zjit_bisect.rb': [team:jit]
+  'doc/jit/*': [team:jit]
+  # Skip github workflow files because the team don't necessarily need to review dependabot updates for GitHub Actions. It's noisy in notifications, and they're auto-merged anyway.
 options:
   ignore_draft: true
+  # This currently doesn't work as intended. We want to skip reviews when only
+  # cruby_bingings.inc.rs is modified, but this skips reviews even when other
+  # files are modified as well. To be enabled after fixing the behavior.
+  #last_files_match_only: true
diff --git a/.github/codeql/codeql-config.yml b/.github/codeql/codeql-config.yml
deleted file mode 100644
index 91f82b842b..0000000000
--- a/.github/codeql/codeql-config.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-name: "CodeQL config for the Ruby language"
-
-languages: cpp
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index b18fd29357..2c2982d1d4 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -3,4 +3,20 @@ updates:
   - package-ecosystem: 'github-actions'
     directory: '/'
     schedule:
-      interval: 'weekly'
+      interval: 'daily'
+  - package-ecosystem: 'github-actions'
+    directory: '/.github/actions/slack'
+    schedule:
+      interval: 'daily'
+  - package-ecosystem: 'github-actions'
+    directory: '/.github/actions/setup/directories'
+    schedule:
+      interval: 'daily'
+  - package-ecosystem: 'cargo'
+    directory: '/yjit'
+    schedule:
+      interval: 'daily'
+  - package-ecosystem: 'vcpkg'
+    directory: '/'
+    schedule:
+      interval: 'daily'
diff --git a/.github/labeler.yml b/.github/labeler.yml
new file mode 100644
index 0000000000..e81aed8e98
--- /dev/null
+++ b/.github/labeler.yml
@@ -0,0 +1,6 @@
+Documentation:
+- changed-files:
+  - all-globs-to-all-files: doc/**
+
+Backport:
+- base-branch: 'ruby_3_\d'
diff --git a/.github/workflows/annocheck.yml b/.github/workflows/annocheck.yml
new file mode 100644
index 0000000000..899d601aef
--- /dev/null
+++ b/.github/workflows/annocheck.yml
@@ -0,0 +1,110 @@
+name: Annocheck
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  compile:
+    name: test-annocheck
+
+    runs-on: ubuntu-latest
+
+    container:
+      image: ghcr.io/ruby/ruby-ci-image:gcc-11
+      options: --user root
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    env:
+      CONFIGURE_TTY: never
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUBY_DEBUG: ci rgengc
+      RUBY_TESTOPTS: >-
+        -q
+        --color=always
+        --tty=no
+      # FIXME: Drop skipping options
+      # https://bugs.ruby-lang.org/issues/18061
+      # https://sourceware.org/annobin/annobin.html/Test-pie.html
+      TEST_ANNOCHECK_OPTS: '--skip-pie --skip-gaps'
+
+    steps:
+      - run: id
+        working-directory:
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      # Minimal flags to pass the check.
+      # -g0 disables backtraces when SEGV.  Do not set that.
+      - name: Run configure
+        run: >
+          ../src/configure -C
+          --enable-debug-env
+          --disable-install-doc
+          --with-ext=-test-/cxxanyargs,+
+          --without-valgrind
+          --without-jemalloc
+          --without-gmp
+          --with-gcc="gcc-11 -fcf-protection -Wa,--generate-missing-build-notes=yes"
+          --enable-shared
+          debugflags=-ggdb3
+          optflags=-O2
+          LDFLAGS=-Wl,-z,now
+
+      - run: make showflags
+
+      - run: make
+
+      - run: make test-annocheck
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/auto_request_review.yml b/.github/workflows/auto_request_review.yml
index e0f4b587f0..207315a084 100644
--- a/.github/workflows/auto_request_review.yml
+++ b/.github/workflows/auto_request_review.yml
@@ -2,13 +2,19 @@ name: Auto Request Review
 on:
   pull_request_target:
     types: [opened, ready_for_review, reopened]
+    branches: [master]
+
+permissions:
+  contents: read
+
 jobs:
   auto-request-review:
     name: Auto Request Review
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'ruby/ruby' && github.base_ref == 'master' }}
     steps:
       - name: Request review based on files changes and/or groups the author belongs to
-        uses: necojackarc/auto-request-review@b5e81876454003a4ccb9b89cb205c67d77d7035b # v0.8.0
+        uses: necojackarc/auto-request-review@e89da1a8cd7c8c16d9de9c6e763290b6b0e3d424 # v0.13.0
         with:
           # scope: public_repo
-          token: ${{ secrets.MATZBOT_GITHUB_TOKEN }}
+          token: ${{ secrets.MATZBOT_AUTO_REQUEST_REVIEW_TOKEN }}
diff --git a/.github/workflows/auto_review_pr.yml b/.github/workflows/auto_review_pr.yml
new file mode 100644
index 0000000000..ad0e63ba12
--- /dev/null
+++ b/.github/workflows/auto_review_pr.yml
@@ -0,0 +1,33 @@
+name: Auto Review PR
+on:
+  pull_request_target:
+    types: [opened, ready_for_review, reopened]
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  auto-review-pr:
+    name: Auto Review PR
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'ruby/ruby' && github.base_ref == 'master' }}
+
+    permissions:
+      pull-requests: write
+      contents: read
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6.0.1
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.4'
+          bundler: none
+
+      - name: Auto Review PR
+        run: ruby tool/auto_review_pr.rb "$GITHUB_PR_NUMBER"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_PR_NUMBER: ${{ github.event.pull_request.number }}
diff --git a/.github/workflows/baseruby.yml b/.github/workflows/baseruby.yml
index 8152cad768..d3e734f885 100644
--- a/.github/workflows/baseruby.yml
+++ b/.github/workflows/baseruby.yml
@@ -4,69 +4,71 @@ on:
   push:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
   pull_request:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions:
+  contents: read
+
 jobs:
   baseruby:
     name: BASERUBY
-    runs-on: ubuntu-20.04
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
     strategy:
       matrix:
         ruby:
-          - ruby-2.2
-#         - ruby-2.3
-#         - ruby-2.4
-#         - ruby-2.5
-#         - ruby-2.6
-#         - ruby-2.7
-          - ruby-3.0
           - ruby-3.1
+          - ruby-3.2
+          - ruby-3.3
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
-        with:
-          path: .downloaded-cache
-          key: downloaded-cache
-      - uses: ruby/setup-ruby@v1
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler: none
-      - run: echo "GNUMAKEFLAGS=-j$((1 + $(nproc --all)))" >> $GITHUB_ENV
-      - run: sudo apt-get install build-essential autoconf bison libyaml-dev
-      - run: ./autogen.sh
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          makeup: true
+
       - run: ./configure --disable-install-doc
-      - run: make common-srcs
-      - run: make incs
+
       - run: make all
+
       - run: make test
-      - uses: ruby/action-slack@v3.0.0
+
+      - uses: ./.github/actions/slack
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ github.workflow }} / BASERUBY @ ${{ matrix.ruby }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
-        env:
+          label: ${{ matrix.ruby }}
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ failure() }}
diff --git a/.github/workflows/bundled_gems.yml b/.github/workflows/bundled_gems.yml
index 471f32b25f..59f64e8312 100644
--- a/.github/workflows/bundled_gems.yml
+++ b/.github/workflows/bundled_gems.yml
@@ -1,140 +1,190 @@
 name: bundled_gems
 
+env:
+  UPDATE_ENABLED: true
+
 on:
   push:
+    branches: ['master']
     paths:
       - '.github/workflows/bundled_gems.yml'
       - 'gems/bundled_gems'
   pull_request:
+    branches: ['master']
     paths:
       - '.github/workflows/bundled_gems.yml'
       - 'gems/bundled_gems'
+  merge_group:
   schedule:
     - cron: '45 6 * * *'
   workflow_dispatch:
 
+permissions: # added using https://github.com/step-security/secure-workflows
+  contents: read
+
 jobs:
   update:
+    permissions:
+      contents: write # for Git to git push
+
     if: ${{ github.event_name != 'schedule' || github.repository == 'ruby/ruby' }}
+
     name: update ${{ github.workflow }}
+
     runs-on: ubuntu-latest
+
     steps:
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          token: ${{ (github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull')) && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          # Skip overwriting MATZBOT_AUTO_UPDATE_TOKEN
+          checkout: '' # false (ref: https://github.com/actions/runner/issues/2238)
 
       - name: Set ENV
         run: |
-          echo "GNUMAKEFLAGS=-j$((1 + $(nproc --all)))" >> $GITHUB_ENV
           echo "TODAY=$(date +%F)" >> $GITHUB_ENV
 
-      - uses: actions/checkout@v3
-
-      - uses: actions/cache@v3
-        with:
-          path: .downloaded-cache
-          key: downloaded-cache-${{ github.sha }}
-          restore-keys: |
-            downloaded-cache
-
       - name: Download previous gems list
         run: |
-          data=bundled_gems.json
           mkdir -p .downloaded-cache
-          ln -s .downloaded-cache/$data .
-          curl -O -R -z ./$data https://stdgems.org/$data
+          for data in bundled_gems.json default_gems.json; do
+            ln -s .downloaded-cache/$data .
+            curl -O -R -z ./$data https://stdgems.org/$data
+          done
 
       - name: Update bundled gems list
+        id: bundled_gems
         run: |
-          ruby -i~ tool/update-bundled_gems.rb gems/bundled_gems
+          ruby -i~ tool/update-bundled_gems.rb gems/bundled_gems >> $GITHUB_OUTPUT
+        if: ${{ env.UPDATE_ENABLED == 'true' }}
 
-      - name: Maintain updated gems list in NEWS
+      - name: Update spec/bundler/support/builders.rb
         run: |
           #!ruby
-          require 'json'
-          news = File.read("NEWS.md")
-          prev = news[/since the \*+(\d+\.\d+\.\d+)\*+/, 1]
-          prevs = [prev, prev.sub(/\.\d+\z/, '')]
-          %W[bundled].each do |type|
-            last = JSON.parse(File.read("#{type}_gems.json"))['gems'].filter_map do |g|
-              v = g['versions'].values_at(*prevs).compact.first
-              g = g['gem']
-              g = 'RubyGems' if g == 'rubygems'
-              [g, v] if v
-            end.to_h
-            changed = File.foreach("gems/#{type}_gems").filter_map do |l|
-              next if l.start_with?("#")
-              g, v = l.split(" ", 3)
-              [g, v] unless last[g] == v
-            end
-            changed, added = changed.partition {|g, _| last[g]}
-            news.sub!(/^\*( +)The following #{type} gems? are updated\.\n\K(?: \1\* .*\n)*/) do
-              mark = "#{$1} * "
-              changed.map {|g, v|"#{mark}#{g} #{v}\n"}.join("")
-            end or next
-            news.sub!(/^\*( +)The following default gems are now bundled gems\.\n\K(?: \1\* .*\n)*/) do
-              mark = "#{$1} * "
-              added.map {|g, v|"#{mark}#{g} #{v}\n"}.join("")
-            end or next if added
-            File.write("NEWS.md", news)
-          end
-        shell: ruby {0}
+          rake_version = File.read("gems/bundled_gems")[/^rake\s+(\S+)/, 1]
+          print ARGF.read.sub(/^ *def rake_version\s*\K".*?"/) {rake_version.dump}
+        shell: ruby -i~ {0} spec/bundler/support/builders.rb
+        if: ${{ env.UPDATE_ENABLED == 'true' }}
+
+      - name: Maintain updated gems list in NEWS
+        run: |
+          ruby tool/update-NEWS-gemlist.rb bundled
+        if: ${{ env.UPDATE_ENABLED == 'true' }}
 
       - name: Check diffs
         id: diff
         run: |
-          git add -- NEWS.md
-          git diff --no-ext-diff --ignore-submodules --quiet -- gems/bundled_gems
-        continue-on-error: true
+          news= gems=
+          git diff --color --no-ext-diff --ignore-submodules --exit-code -- NEWS.md ||
+          news=true
+          git diff --color --no-ext-diff --ignore-submodules --exit-code -- gems/bundled_gems ||
+          gems=true
+          git add -- NEWS.md gems/bundled_gems
+          git add -- spec/bundler/support/builders.rb
+          echo news=$news >> $GITHUB_OUTPUT
+          echo gems=$gems >> $GITHUB_OUTPUT
+          echo update=${news:-$gems} >> $GITHUB_OUTPUT
 
-      - name: Install libraries
+      - name: Commit
+        id: commit
         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 bison autoconf ruby
-        if: ${{ steps.diff.outcome == 'failure' }}
+          git pull --ff-only origin ${GITHUB_REF#refs/heads/}
+          message="Update bundled gems list"
+          if [ -z "${gems}" ]; then
+            git commit --message="[DOC] ${message} at ${GITHUB_SHA:0:30}"
+          else
+            git commit --message="${message} as of ${TODAY}"
+          fi
+        env:
+          TODAY: ${{ steps.bundled_gems.outputs.latest_date || env.TODAY }}
+          EMAIL: svn-admin@ruby-lang.org
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+          gems: ${{ steps.diff.outputs.gems }}
+        if: ${{ steps.diff.outputs.update }}
+
+      - name: Development revision of bundled gems
+        run: |
+          #!ruby
+          file = "gems/bundled_gems"
+
+          SECONDS_IN_DAY = 86400
+          today = Time.new("#{ENV['TODAY']}Z")
+          if !(december = today.month == 12)
+            days = 30
+          elsif (days = 26 - today.day).positive?
+            days += 4
+          else
+            puts "::info:: just after released"
+            exit
+          end
+
+          since = "#{today.year-1}-12-26"
+          ref = ENV['GITHUB_REF']
+          puts "::group::\e[94mfetching \e[1m#{file}\e[22m since \e[1m#{since}\e[22m from \e[1m#{ref}\e[m"
+          system(*%W[git fetch --shallow-since=#{since} --no-tags origin #{ref}], exception: true)
+          puts "::endgroup::"
+
+          puts "\e[94mchecking development version bundled gems older than \e[1m#{days}\e[22m days\e[m"
+          limit = today.to_i - days * SECONDS_IN_DAY
+          old = 0
+          IO.popen(%W"git blame --line-porcelain -- #{file}") do |blame|
+            while head = blame.gets("\n\t") and s = blame.gets
+              next unless (gem = s.split(/\s+|#.*/)).size > 3
+              time = head[/^committer-time \K\d+/].to_i
+              next if (d = limit - time) <= 0
+              d /= SECONDS_IN_DAY
+              line = head[/\A\h+ \d+ \K\d+/].to_i
+              level = if d < days; 'warning'; else old += 1; 'error'; end
+              d += days
+              puts "::#{level} file=#{file},line=#{line},title=Older than #{d} days::#{gem[0]} #{gem[3]}"
+            end
+          end
+          abort "::error title=Too long-standing gems::The release comes soon." if december and old.nonzero?
+        shell: ruby {0}
+        env:
+          file: ${{ steps.logs.outputs.file }}
+          days: ${{ steps.logs.outputs.days }}
+
+      - name: Install libraries
+        uses: ./.github/actions/setup/ubuntu
+        if: ${{ steps.diff.outputs.gems }}
 
       - name: Build
         run: |
           ./autogen.sh
           ./configure -C --disable-install-doc
           make
-        if: ${{ steps.diff.outcome == 'failure' }}
+        if: ${{ steps.diff.outputs.gems }}
 
       - name: Prepare bundled gems
         run: |
           make -s prepare-gems
-        if: ${{ steps.diff.outcome == 'failure' }}
+        if: ${{ steps.diff.outputs.gems }}
 
       - name: Test bundled gems
         run: |
           make -s test-bundled-gems
-          git add -- gems/bundled_gems
         timeout-minutes: 30
         env:
-          RUBY_TESTOPTS: "-q --tty=no"
-          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ""
-        if: ${{ steps.diff.outcome == 'failure' }}
-
-      - name: Show diffs
-        id: show
-        run: |
-          git diff --cached --color --no-ext-diff --ignore-submodules --exit-code --
-        continue-on-error: true
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+        if: ${{ steps.diff.outputs.gems }}
 
-      - name: Commit
+      - name: Push
         run: |
-          git pull --ff-only origin ${GITHUB_REF#refs/heads/}
-          message="Update bundled gems list at "
-          if [ ${{ steps.diff.outcome }} = success ]; then
-            git commit --message="${message}${GITHUB_SHA:0:30} [ci skip]"
-          else
-            git commit --message="${message}${TODAY}"
-          fi
           git push origin ${GITHUB_REF#refs/heads/}
-        env:
-          EMAIL: svn-admin@ruby-lang.org
-          GIT_AUTHOR_NAME: git
-          GIT_COMMITTER_NAME: git
-        if: ${{ github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull') && steps.show.outcome == 'failure' }}
+        if: >-
+          ${{
+          github.repository == 'ruby/ruby' &&
+          !startsWith(github.event_name, 'pull') &&
+          steps.commit.outcome == 'success'
+          }}
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/check_dependencies.yml b/.github/workflows/check_dependencies.yml
index 16e2829f73..c5dec65e48 100644
--- a/.github/workflows/check_dependencies.yml
+++ b/.github/workflows/check_dependencies.yml
@@ -3,69 +3,57 @@ on:
   push:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
   pull_request:
-    paths-ignore:
-      - 'doc/**'
-      - '**.md'
-      - '**.rdoc'
-      - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions:
+  contents: read
+
 jobs:
   update-deps:
+    name: Dependency checks
+
     strategy:
       matrix:
-        os: [ubuntu-20.04]
+        os: [ubuntu-latest]
       fail-fast: true
+
     runs-on: ${{ matrix.os }}
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
+
     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 bison autoconf ruby
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/ubuntu
         if: ${{ contains(matrix.os, 'ubuntu') }}
-      - name: Install libraries
-        run: |
-          brew upgrade
-          brew install gmp libffi openssl@1.1 zlib autoconf automake libtool readline
+
+      - uses: ./.github/actions/setup/macos
         if: ${{ contains(matrix.os, 'macos') }}
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
+
+      - uses: ./.github/actions/setup/directories
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
-          path: .downloaded-cache
-          key: downloaded-cache
-      - run: ./autogen.sh
+          ruby-version: '3.1'
+          bundler: none
+
       - name: Run configure
         run: ./configure -C --disable-install-doc --disable-rubygems --with-gcc 'optflags=-O0' 'debugflags=-save-temps=obj -g'
-      - run: make all golf
-      - run: ruby tool/update-deps --fix
+
+      - run: make fix-depends
+
       - run: git diff --no-ext-diff --ignore-submodules --exit-code
-      - uses: ruby/action-slack@v3.0.0
+
+      - uses: ./.github/actions/slack
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ matrix.os }} / Dependencies need to update",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
-        env:
+          label: ${{ matrix.os }} / Dependencies need to update
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ failure() }}
diff --git a/.github/workflows/check_misc.yml b/.github/workflows/check_misc.yml
index e897015d56..2a2bd1df53 100644
--- a/.github/workflows/check_misc.yml
+++ b/.github/workflows/check_misc.yml
@@ -1,113 +1,127 @@
-name: Miscellaneous checks
-on: [push, pull_request]
+name: Misc
+on: [push, pull_request, merge_group]
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions:
+  contents: read
+
 jobs:
   checks:
+    name: Miscellaneous checks
+
+    permissions:
+      contents: write # for Git to git push
+
     runs-on: ubuntu-latest
+
     steps:
-      - uses: actions/checkout@v3
-      - name: Check if C-sources are US-ASCII
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          token: ${{ (github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull')) && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          makeup: true
+          # Skip overwriting MATZBOT_AUTO_UPDATE_TOKEN
+          checkout: '' # false (ref: https://github.com/actions/runner/issues/2238)
+
+      - name: Check for code styles
         run: |
-          ! grep -r -n '[^	 -~]' *.[chy] include internal win32/*.[ch]
-      - name: Check for trailing spaces
+          set -x
+          ruby tool/auto-style.rb "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA"
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.pull_request.base.sha }}
+          GITHUB_NEW_SHA: ${{ github.event.pull_request.merge_commit_sha }}
+        # Skip 'push' events because post_push.yml fixes them on push
+        if: ${{ github.repository == 'ruby/ruby' && startsWith(github.event_name, 'pull') }}
+
+      - name: Check for bash specific substitution in configure.ac
         run: |
-          ! git grep -n '[	 ]$' '*.rb' '*.[chy]'
+          git grep -n '\${[A-Za-z_0-9]*/' -- configure.ac && exit 1 || :
+
       - name: Check for header macros
         run: |
-          ! for header in ruby/*.h; do \
-            git grep -l -F -e $header -e HAVE_`echo $header | tr a-z./ A-Z__` -- . > /dev/null || echo $header
-          done | grep -F .
+          fail=
+          for header in ruby/*.h; do
+            git grep -l -F -e $header -e HAVE_`echo $header | tr a-z./ A-Z__` -- . > /dev/null && continue
+            fail=1
+            echo $header
+          done
+          exit $fail
         working-directory: include
 
-      - uses: actions/cache@v3
-        with:
-          path: .downloaded-cache
-          key: downloaded-cache-${{ github.sha }}
-          restore-keys: |
-            downloaded-cache
+      - id: now
+        run: |
+          date +"mon=%-m"%n"day=%-d" >> $GITHUB_OUTPUT
+        env:
+          TZ: Tokyo/Asia
 
-      - name: Download previous gems list
+      - id: deprecation
         run: |
-          data=default_gems.json
-          mkdir -p .downloaded-cache
-          ln -s .downloaded-cache/$data .
-          curl -O -R -z ./$data https://stdgems.org/$data
+          eval $(sed -n 's/^#define RUBY_API_VERSION_\(MAJOR\|MINOR\) /\1=/p' include/ruby/version.h)
+          if git --no-pager grep --color -o 'rb_warn_deprecated_to_remove_at('$MAJOR'\.'$MINOR',.*' -- '*.c' >&2; then
+              false
+          else
+              true
+          fi
+        continue-on-error: ${{ steps.now.outputs.mon < 12 }}
 
-      - name: Make default gems list
+      - name: Check if to generate documents
+        id: rdoc
         run: |
-          #!ruby
-          require 'rubygems'
-          $:.unshift "lib"
-          rgver = File.foreach("lib/rubygems.rb") do |line|
-            break $1 if /^\s*VERSION\s*=\s*"([^"]+)"/ =~ line
-          end
-          gems = Dir.glob("{ext,lib}/**/*.gemspec").map do |f|
-            spec = Gem::Specification.load(f)
-            "#{spec.name} #{spec.version}"
-          end.sort
-          File.open("gems/default_gems", "w") do |f|
-            f.puts "RubyGems #{rgver}"
-            f.puts gems
-          end
-        shell: ruby --disable=gems {0}
-
-      - name: Maintain updated gems list in NEWS
+          set -- $(sed 's/#.*//;/^rdoc /!d' gems/bundled_gems)
+          { echo version=$2; echo ref=$4; } >> $GITHUB_OUTPUT
+          echo RDOC='ruby -W0 --disable-gems tool/rdoc-srcdir -q' >> $GITHUB_ENV
+
+      - name: Checkout rdoc
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          repository: ruby/rdoc
+          ref: ${{ steps.rdoc.outputs.ref }}
+          path: .bundle/gems/rdoc-${{ steps.rdoc.outputs.version }}
+        if: ${{ steps.rdoc.outputs.ref != '' }}
+
+      - name: Generate rdoc
         run: |
-          #!ruby
-          require 'json'
-          news = File.read("NEWS.md")
-          prev = news[/since the \*+(\d+\.\d+\.\d+)\*+/, 1]
-          prevs = [prev, prev.sub(/\.\d+\z/, '')]
-          %W[default].each do |type|
-            last = JSON.parse(File.read("#{type}_gems.json"))['gems'].filter_map do |g|
-              v = g['versions'].values_at(*prevs).compact.first
-              g = g['gem']
-              g = 'RubyGems' if g == 'rubygems'
-              [g, v] if v
-            end.to_h
-            changed = File.foreach("gems/#{type}_gems").filter_map do |l|
-              next if l.start_with?("#")
-              g, v = l.split(" ", 3)
-              [g, v] unless last[g] == v
-            end
-            news.sub!(/^\*( +)The following #{type} gems? are updated\.\n\K(?: \1\* .*\n)*/) do
-              mark = "#{$1} * "
-              changed.map {|g, v|"#{mark}#{g} #{v}\n"}.join("")
-            end or next
-            File.write("NEWS.md", news)
-          end
-        shell: ruby {0}
-
-      - name: Check diffs
-        id: diff
+          set -x
+          gempath=$(ruby -e 'print Gem.user_dir, "/bin"')
+          PATH=$gempath:$PATH
+          gem install --user bundler
+          bundle config --local path vendor/bundle
+          bundle install --jobs 4
+          bundle exec rake generate
+        working-directory: .bundle/gems/rdoc-${{ steps.rdoc.outputs.version }}
+        if: ${{ steps.rdoc.outputs.ref != '' }}
+
+      - name: Core docs coverage
         run: |
-          git diff --color --no-ext-diff --ignore-submodules --exit-code NEWS.md
-        continue-on-error: true
-      - name: Commit
+          $RDOC -C -x ^ext -x ^lib .
+
+      - name: Generate docs
+        id: docs
         run: |
-          git pull --ff-only origin ${GITHUB_REF#refs/heads/}
-          git commit --message="Update default gems list at ${GITHUB_SHA:0:30} [ci skip]" NEWS.md
-          git push origin ${GITHUB_REF#refs/heads/}
-        env:
-          EMAIL: svn-admin@ruby-lang.org
-          GIT_AUTHOR_NAME: git
-          GIT_COMMITTER_NAME: git
-        if: ${{ github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull') && steps.diff.outcome == 'failure' }}
+          $RDOC --op html .
+          echo htmlout=ruby-html-${GITHUB_SHA:0:10} >> $GITHUB_OUTPUT
+        # Generate only when document commit/PR
+        if: >-
+          ${{false
+          || contains(github.event.head_commit.message, '[ruby/rdoc]')
+          || contains(github.event.head_commit.message, '[DOC]')
+          || contains(github.event.pull_request.title, '[DOC]')
+          || contains(github.event.pull_request.labels.*.name, 'Documentation')
+          }}
 
-      - uses: ruby/action-slack@v3.0.0
+      - name: Upload docs
+        uses: actions/upload-artifact@v6.0.0
+        with:
+          path: html
+          name: ${{ steps.docs.outputs.htmlout }}
+        if: ${{ steps.docs.outcome == 'success' }}
+
+      - uses: ./.github/actions/slack
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ github.workflow }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
-        env:
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ failure() }}
diff --git a/.github/workflows/cirrus-notify.yml b/.github/workflows/cirrus-notify.yml
deleted file mode 100644
index fff717f1d6..0000000000
--- a/.github/workflows/cirrus-notify.yml
+++ /dev/null
@@ -1,42 +0,0 @@
-on:
-  check_suite:
-    type: ['completed']
-name: Cirrus CI failure notification
-jobs:
-  cirrus-notify:
-    name: After Cirrus CI Failure
-    if: >-
-      github.event.check_suite.app.name == 'Cirrus CI'
-      && github.event.check_suite.conclusion != 'success'
-      && github.event.check_suite.conclusion != 'cancelled'
-      && github.event.check_suite.conclusion != 'skipped'
-      && github.event.check_suite.head_branch == 'master'
-    runs-on: ubuntu-latest
-    steps:
-      - uses: octokit/request-action@v2.x
-        id: get_failed_check_run
-        with:
-          route: GET /repos/${{ github.repository }}/check-suites/${{ github.event.check_suite.id }}/check-runs?status=completed
-          mediaType: '{"previews": ["antiope"]}'
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Dump GitHub context
-        env:
-          GITHUB_CONTEXT: ${{ toJson(github) }}
-        run: echo "$GITHUB_CONTEXT"
-      - name: Dump check_runs
-        env:
-          CHECK_RUNS: ${{ steps.get_failed_check_run.outputs.data }}
-        run: echo "$CHECK_RUNS"
-      - uses: ruby/action-slack@v3.0.0
-        with:
-          payload: |
-            {
-              "ci": "Cirrus CI",
-              "env": "Cirrus CI",
-              "url": "${{ fromJson(steps.get_failed_check_run.outputs.data).check_runs[0].html_url }}",
-              "commit": "${{ github.event.check_suite.head_commit.id }}",
-              "branch": "${{ github.event.check_suite.head_branch }}"
-            }
-        env:
-          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 42f1494b1d..a92c93b476 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -1,68 +1,121 @@
-name: "Code scanning - action"
+name: 'CodeQL'
 
 on:
-  # push:
-  #   paths-ignore:
-  #     - 'doc/**'
-  #     - '**.md'
-  #     - '**.rdoc'
-  #     - '**/.document'
-  #     - '**.[1-8]'
-  #     - '**.ronn'
-  # pull_request:
-  #   paths-ignore:
-  #     - 'doc/**'
-  #     - '**.md'
-  #     - '**.rdoc'
-  #     - '**/.document'
-  #     - '**.[1-8]'
-  #     - '**.ronn'
+  push:
+    branches: ['master']
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
   schedule:
     - cron: '0 12 * * *'
+  workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
-jobs:
-  CodeQL-Build:
+permissions: # added using https://github.com/step-security/secure-workflows
+  contents: read
 
-    # CodeQL runs on ubuntu-latest and windows-latest
+jobs:
+  analyze:
+    name: Analyze
     runs-on: ubuntu-latest
+    permissions:
+      actions: read # for github/codeql-action/init to get workflow details
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/autobuild to send a status report
     # CodeQL fails to run pull requests from dependabot due to missing write access to upload results.
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') && github.event.head_commit.pusher.name != 'dependabot[bot]' }}
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
 
     env:
       enable_install_doc: no
 
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - language: cpp
+          - language: ruby
+
     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 bison autoconf ruby
+      - name: Checkout repository
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Install libraries
+        if: ${{ contains(matrix.os, 'macos') }}
+        uses: ./.github/actions/setup/macos
+
+      - name: Install libraries
+        if : ${{ matrix.os == 'ubuntu-latest' }}
+        uses: ./.github/actions/setup/ubuntu
 
-    - name: Checkout repository
-      uses: actions/checkout@v3
+      - uses: ./.github/actions/setup/directories
 
-    - uses: actions/cache@v3
-      with:
-        path: .downloaded-cache
-        key: downloaded-cache
+      - name: Remove an obsolete rubygems vendored file
+        if: ${{ matrix.os == 'ubuntu-latest' }}
+        run: sudo rm /usr/lib/ruby/vendor_ruby/rubygems/defaults/operating_system.rb
 
-    - 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@e296a935590eb16afc0c0108289f68c87e2a89a5 # v4.30.7
+        with:
+          languages: ${{ matrix.language }}
+          trap-caching: false
+          debug: true
 
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
-      with:
-        config-file: ./.github/codeql/codeql-config.yml
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@e296a935590eb16afc0c0108289f68c87e2a89a5 # v4.30.7
 
-    - name: Set ENV
-      run: echo "GNUMAKEFLAGS=-j$((1 + $(nproc --all)))" >> $GITHUB_ENV
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@e296a935590eb16afc0c0108289f68c87e2a89a5 # v4.30.7
+        with:
+          category: '/language:${{ matrix.language }}'
+          upload: False
+          output: sarif-results
 
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
+      - name: filter-sarif
+        uses: advanced-security/filter-sarif@f3b8118a9349d88f7b1c0c488476411145b6270d # v1.0.1
+        with:
+          patterns: |
+            +**/*.rb
+            -lib/uri/mailto.rb:rb/overly-large-range
+            -lib/uri/rfc3986_parser.rb:rb/overly-large-range
+            -lib/bundler/vendor/uri/lib/uri/mailto.rb:rb/overly-large-range
+            -lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb:rb/overly-large-range
+            -test/ruby/test_io.rb:rb/non-constant-kernel-open
+            -test/open-uri/test_open-uri.rb:rb/non-constant-kernel-open
+            -test/open-uri/test_ssl.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/binread_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/readlines_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/foreach_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/write_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/read_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/kernel/open_spec.rb:rb/non-constant-kernel-open
+          input: sarif-results/${{ matrix.language }}.sarif
+          output: sarif-results/${{ matrix.language }}.sarif
+        if: ${{ matrix.language == 'ruby' }}
+        continue-on-error: true
 
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      - name: Upload SARIF
+        uses: github/codeql-action/upload-sarif@e296a935590eb16afc0c0108289f68c87e2a89a5 # v4.30.7
+        with:
+          sarif_file: sarif-results/${{ matrix.language }}.sarif
+        continue-on-error: true
diff --git a/.github/workflows/compilers.yml b/.github/workflows/compilers.yml
index 60fcc94c5e..8c0ca54e0b 100644
--- a/.github/workflows/compilers.yml
+++ b/.github/workflows/compilers.yml
@@ -1,286 +1,334 @@
+# Some tests depending on this name 'Compilations' via $GITHUB_WORKFLOW. Make sure to update such tests when renaming this workflow.
 name: Compilations
 
 on:
   push:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
   pull_request:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
-# GitHub actions does not support YAML anchors.  This creative use of
-# environment variables (plus the "echo $GITHUB_ENV" hack) is to reroute that
-# restriction.
-env:
-  default_cc: clang-15
-  append_cc: ''
-
-  # -O1 is faster than -O3 in our tests... Majority of time are consumed trying
-  # to optimize binaries.  Also GitHub Actions run on relatively modern CPUs
-  # 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
+permissions:
+  contents: read
 
+# Each job is split so that they roughly take 30min to run through.
 jobs:
-  compile:
-    strategy:
-      fail-fast: false
-      matrix:
-        env:
-          - {}
-        entry:
-          - { name: gcc-12,    env: { default_cc: gcc-12 } }
-          - { name: gcc-11,    env: { default_cc: gcc-11 } }
-          - { name: gcc-10,    env: { default_cc: gcc-10 } }
-          - { name: gcc-9,     env: { default_cc: gcc-9 } }
-          - { name: gcc-8,     env: { default_cc: gcc-8 } }
-          - { name: gcc-7,     env: { default_cc: gcc-7 } }
-          - { name: gcc-6,     env: { default_cc: gcc-6 } }
-          - { name: gcc-5,     env: { default_cc: gcc-5 } }
-          - { name: gcc-4.8,   env: { default_cc: gcc-4.8 } }
-          - name: 'gcc-11 LTO'
-            container: gcc-11
-            env:
-              default_cc: 'gcc-11 -flto=auto -ffat-lto-objects'
-              optflags: '-O2'
-            shared: disable
-            # check: true
-          - name: 'gcc-11 annocheck'
-            container: gcc-11
-            env:
-              # Minimal flags to pass the check.
-              default_cc: 'gcc-11 -O2 -fcf-protection -Wa,--generate-missing-build-notes=yes'
-              LDFLAGS: '-Wl,-z,now'
-              # FIXME: Drop skipping options
-              # https://bugs.ruby-lang.org/issues/18061
-              # https://sourceware.org/annobin/annobin.html/Test-pie.html
-              TEST_ANNOCHECK_OPTS: "--skip-pie"
-            check: true
-          - { name: clang-16,  env: { default_cc: clang-16 } }
-          - { name: clang-15,  env: { default_cc: clang-15 } }
-          - { name: clang-14,  env: { default_cc: clang-14 } }
-          - { name: clang-13,  env: { default_cc: clang-13 } }
-          - { name: clang-12,  env: { default_cc: clang-12 } }
-          - { name: clang-11,  env: { default_cc: clang-11 } }
-          - { name: clang-10,  env: { default_cc: clang-10 } }
-          - { name: clang-9,   env: { default_cc: clang-9 } }
-          - { name: clang-8,   env: { default_cc: clang-8 } }
-          - { name: clang-7,   env: { default_cc: clang-7 } }
-          - { name: clang-6.0, env: { default_cc: clang-6.0 } }
-          - { name: clang-5.0, env: { default_cc: clang-5.0 } }
-          - { name: clang-4.0, env: { default_cc: clang-4.0 } }
-          - { name: clang-3.9, env: { default_cc: clang-3.9 } }
-          - name: 'clang-14 LTO'
-            container: clang-14
-            env:
-              default_cc: 'clang-14 -flto=auto'
-              optflags: '-O2'
-            shared: disable
-            # check: true
-
-#         - { name: aarch64-linux-gnu,     crosshost: aarch64-linux-gnu, container: crossbuild-essential-arm64 }
-#         - { name: arm-linux-gnueabi,     crosshost: arm-linux-gnueabi }
-#         - { name: arm-linux-gnueabihf,   crosshost: arm-linux-gnueabihf }
-#         - { name: i686-w64-mingw32,      crosshost: i686-w64-mingw32 }
-#         - { name: powerpc-linux-gnu,     crosshost: powerpc-linux-gnu }
-#         - { name: powerpc64le-linux-gnu, crosshost: powerpc64le-linux-gnu, container: crossbuild-essential-ppc64el }
-#         - { name: s390x-linux-gnu,       crosshost: s390x-linux-gnu, container: crossbuild-essential-s390x }
-#         - { name: x86_64-w64-mingw32,    crosshost: x86_64-w64-mingw32, container: mingw-w64 }
-
-          # -Wno-strict-prototypes is necessary with current clang-15 since
-          # older autoconf generate functions without prototype and -pedantic
-          # now implies strict-prototypes. Disabling the error but leaving the
-          # warning generates a lot of noise from use of ANYARGS in
-          # rb_define_method() and friends.
-          # See: https://github.com/llvm/llvm-project/commit/11da1b53d8cd3507959022cd790d5a7ad4573d94
-          - { name: c99,   env: { append_cc: '-std=c99   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' } }
-#         - { name: c11,   env: { append_cc: '-std=c11   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' } }
-#         - { name: c17,   env: { append_cc: '-std=c17   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' } }
-          - { name: c2x,   env: { append_cc: '-std=c2x   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' } }
-          - { name: c++98, env: { CXXFLAGS: '-std=c++98 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' } }
-#         - { name: c++11, env: { CXXFLAGS: '-std=c++11 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' } }
-#         - { name: c++14, env: { CXXFLAGS: '-std=c++14 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' } }
-#         - { name: c++17, env: { CXXFLAGS: '-std=c++17 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' } }
-          - { name: c++2a, env: { CXXFLAGS: '-std=c++2a -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' } }
-
-          - { name: '-O0', env: { optflags: '-O0 -march=x86-64 -mtune=generic' } }
-#         - { name: '-O3', env: { optflags: '-O3 -march=x86-64 -mtune=generic' }, check: true }
-
-          - { name: gmp,                  env: { append_configure: '--with-gmp' } }
-          - { name: jemalloc,             env: { append_configure: '--with-jemalloc' } }
-          - { name: valgrind,             env: { append_configure: '--with-valgrind' } }
-          - { name: 'coroutine=ucontext', env: { append_configure: '--with-coroutine=ucontext' } }
-          - { name: 'coroutine=pthread',  env: { append_configure: '--with-coroutine=pthread' } }
-          - { name: disable-jit-support,  env: { append_configure: '--disable-jit-support' } }
-          - { name: disable-dln,          env: { append_configure: '--disable-dln' } }
-          - { name: enable-mkmf-verbose,  env: { append_configure: '--enable-mkmf-verbose' } }
-          - { name: disable-rubygems,     env: { append_configure: '--disable-rubygems' } }
-          - { name: RUBY_DEVEL,           env: { append_configure: '--enable-devel' } }
+  compile-if:
+    name: 'omnibus compilations, trigger'
+    runs-on: ubuntu-latest
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+    steps:
+      - run: true
+        working-directory:
 
-          - { name: OPT_THREADED_CODE=1,            env: { cppflags: '-DOPT_THREADED_CODE=1' } }
-          - { name: OPT_THREADED_CODE=2,            env: { cppflags: '-DOPT_THREADED_CODE=2' } }
-          - { name: OPT_THREADED_CODE=3,            env: { cppflags: '-DOPT_THREADED_CODE=3' } }
+  compile1:
+    name: 'omnibus compilations, #1'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      # Set fetch-depth: 10 so that Launchable can receive commits information.
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - name: 'clang 18 LTO'
+        uses: './.github/actions/compilers'
+        with:
+          tag: clang-18
+          with_gcc: 'clang-18 -flto=auto'
+          optflags: '-O2'
+          enable_shared: false
+        timeout-minutes: 30
+      - { uses: './.github/actions/compilers', name: '-O0', with: { optflags: '-O0 -march=x86-64 -mtune=generic' }, timeout-minutes: 5 }
+      # - { uses: './.github/actions/compilers', name: '-O3', with: { optflags: '-O3 -march=x86-64 -mtune=generic', check: true } }
 
-          - { name: NDEBUG,                         env: { cppflags: '-DNDEBUG' } }
-          - { name: RUBY_DEBUG,                     env: { cppflags: '-DRUBY_DEBUG' } }
-#         - { name: ARRAY_DEBUG,                    env: { cppflags: '-DARRAY_DEBUG' } }
-#         - { name: BIGNUM_DEBUG,                   env: { cppflags: '-DBIGNUM_DEBUG' } }
-#         - { name: CCAN_LIST_DEBUG,                env: { cppflags: '-DCCAN_LIST_DEBUG' } }
-#         - { name: CPDEBUG=-1,                     env: { cppflags: '-DCPDEBUG=-1' } }
-#         - { name: ENC_DEBUG,                      env: { cppflags: '-DENC_DEBUG' } }
-#         - { name: GC_DEBUG,                       env: { cppflags: '-DGC_DEBUG' } }
-#         - { name: HASH_DEBUG,                     env: { cppflags: '-DHASH_DEBUG' } }
-#         - { name: ID_TABLE_DEBUG,                 env: { cppflags: '-DID_TABLE_DEBUG' } }
-#         - { name: RGENGC_DEBUG=-1,                env: { cppflags: '-DRGENGC_DEBUG=-1' } }
-#         - { name: SYMBOL_DEBUG,                   env: { cppflags: '-DSYMBOL_DEBUG' } }
+  compile2:
+    name: 'omnibus compilations, #2'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - name: 'GCC 15 LTO'
+        uses: './.github/actions/compilers'
+        with:
+          tag: gcc-15
+          with_gcc: 'gcc-15 -flto=auto -ffat-lto-objects -Werror=lto-type-mismatch'
+          optflags: '-O2'
+          enable_shared: false
+        timeout-minutes: 10
+      - { uses: './.github/actions/compilers', name: 'ext/Setup', with: { static_exts: 'etc json/* */escape' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 15', with: { tag: 'gcc-15' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 14', with: { tag: 'gcc-14' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 13', with: { tag: 'gcc-13' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 12', with: { tag: 'gcc-12' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 11', with: { tag: 'gcc-11' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 10', with: { tag: 'gcc-10' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 9',  with: { tag: 'gcc-9'  }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 8',  with: { tag: 'gcc-8'  }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 7',  with: { tag: 'gcc-7'  }, timeout-minutes: 5 }
 
-#         - { name: RGENGC_CHECK_MODE,              env: { cppflags: '-DRGENGC_CHECK_MODE' } }
-#         - { name: TRANSIENT_HEAP_CHECK_MODE,      env: { cppflags: '-DTRANSIENT_HEAP_CHECK_MODE' } }
-#         - { name: VM_CHECK_MODE,                  env: { cppflags: '-DVM_CHECK_MODE' } }
+  compile3:
+    name: 'omnibus compilations, #3'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'clang 22', with: { tag: 'clang-22' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 21', with: { tag: 'clang-21' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 20', with: { tag: 'clang-20' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 19', with: { tag: 'clang-19' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 18', with: { tag: 'clang-18' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 17', with: { tag: 'clang-17' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 16', with: { tag: 'clang-16' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 15', with: { tag: 'clang-15' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 14', with: { tag: 'clang-14' }, timeout-minutes: 5 }
 
-          - { name: USE_EMBED_CI=0,                 env: { cppflags: '-DUSE_EMBED_CI=0' } }
-          - { name: USE_FLONUM=0,                   env: { cppflags: '-DUSE_FLONUM=0' } }
-#         - { name: USE_GC_MALLOC_OBJ_INFO_DETAILS, env: { cppflags: '-DUSE_GC_MALLOC_OBJ_INFO_DETAILS' } }
-          - { name: USE_LAZY_LOAD,                  env: { cppflags: '-DUSE_LAZY_LOAD' } }
-#         - { name: USE_RINCGC=0,                   env: { cppflags: '-DUSE_RINCGC=0' } }
-#         - { name: USE_SYMBOL_GC=0,                env: { cppflags: '-DUSE_SYMBOL_GC=0' } }
-#         - { name: USE_THREAD_CACHE=0,             env: { cppflags: '-DUSE_THREAD_CACHE=0' } }
-#         - { name: USE_TRANSIENT_HEAP=0,           env: { cppflags: '-DUSE_TRANSIENT_HEAP=0' } }
-#         - { name: USE_RUBY_DEBUG_LOG=1,           env: { cppflags: '-DUSE_RUBY_DEBUG_LOG=1' } }
-          - { name: USE_RVARGC=0,                   env: { cppflags: '-DUSE_RVARGC=0' } }
-#         - { name: USE_RVARGC=1,                   env: { cppflags: '-DUSE_RVARGC=1' } }
-#         - { name: USE_DEBUG_COUNTER,              env: { cppflags: '-DUSE_DEBUG_COUNTER=1', RUBY_DEBUG_COUNTER_DISABLE: '1' } }
+  compile4:
+    name: 'omnibus compilations, #4'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'clang 13', with: { tag: 'clang-13' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 12', with: { tag: 'clang-12' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 11', with: { tag: 'clang-11' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 10', with: { tag: 'clang-10' }, timeout-minutes: 5 }
+        # llvm-objcopy<=9 doesn't have --wildcard. It compiles, but leaves Rust symbols in libyjit.o and fail `make test-leaked-globals`.
+      - { uses: './.github/actions/compilers', name: 'clang 9',  with: { tag: 'clang-9',   append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 8',  with: { tag: 'clang-8',   append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 7',  with: { tag: 'clang-7',   append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 6',  with: { tag: 'clang-6.0', append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
 
-          - { name: DEBUG_FIND_TIME_NUMGUESS,       env: { cppflags: '-DDEBUG_FIND_TIME_NUMGUESS' } }
-          - { name: DEBUG_INTEGER_PACK,             env: { cppflags: '-DDEBUG_INTEGER_PACK' } }
-#         - { name: ENABLE_PATH_CHECK,              env: { cppflags: '-DENABLE_PATH_CHECK' } }
+  compile5:
+    name: 'omnibus compilations, #5'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      # -Wno-strict-prototypes is necessary with current clang-15 since
+      # older autoconf generate functions without prototype and -pedantic
+      # now implies strict-prototypes. Disabling the error but leaving the
+      # warning generates a lot of noise from use of ANYARGS in
+      # rb_define_method() and friends.
+      # See: https://github.com/llvm/llvm-project/commit/11da1b53d8cd3507959022cd790d5a7ad4573d94
+      - { uses: './.github/actions/compilers', name: 'C99',      with: { CFLAGS: '-std=c99 -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C11',   with: { CFLAGS:   '-std=c11   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C17',   with: { CFLAGS:   '-std=c17   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C23',   with: { CFLAGS:   '-std=c2x   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++98', with: { CXXFLAGS: '-std=c++98 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++11', with: { CXXFLAGS: '-std=c++11 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++14', with: { CXXFLAGS: '-std=c++14 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++17', with: { CXXFLAGS: '-std=c++17 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
 
-          - { name: GC_DEBUG_STRESS_TO_CLASS,       env: { cppflags: '-DGC_DEBUG_STRESS_TO_CLASS' } }
-#         - { name: GC_ENABLE_LAZY_SWEEP=0,         env: { cppflags: '-DGC_ENABLE_LAZY_SWEEP=0' } }
-#         - { name: GC_PROFILE_DETAIL_MEMOTY,       env: { cppflags: '-DGC_PROFILE_DETAIL_MEMOTY' } }
-#         - { name: GC_PROFILE_MORE_DETAIL,         env: { cppflags: '-DGC_PROFILE_MORE_DETAIL' } }
+  compile6:
+    name: 'omnibus compilations, #6'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'C++20', with: { CXXFLAGS: '-std=c++20 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++23', with: { CXXFLAGS: '-std=c++23 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++26', with: { CXXFLAGS: '-std=c++26 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'gmp',                 with: { append_configure: '--with-gmp', test_all: 'ruby/test_bignum.rb', test_spec: "/github/workspace/src/spec/ruby/core/integer" }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'jemalloc',            with: { append_configure: '--with-jemalloc' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'valgrind',            with: { append_configure: '--with-valgrind' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'coroutine=ucontext',  with: { append_configure: '--with-coroutine=ucontext' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'coroutine=pthread',   with: { append_configure: '--with-coroutine=pthread' }, timeout-minutes: 5 }
 
-#         - { name: CALC_EXACT_MALLOC_SIZE,         env: { cppflags: '-DCALC_EXACT_MALLOC_SIZE' } }
-#         - { name: MALLOC_ALLOCATED_SIZE_CHECK,    env: { cppflags: '-DMALLOC_ALLOCATED_SIZE_CHECK' } }
+  compile7:
+    name: 'omnibus compilations, #7'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'disable-jit',         with: { append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'disable-yjit',        with: { append_configure: '--disable-yjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'disable-zjit',        with: { append_configure: '--disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'disable-dln',         with: { append_configure: '--disable-dln' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'enable-mkmf-verbose', with: { append_configure: '--enable-mkmf-verbose' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'disable-rubygems',    with: { append_configure: '--disable-rubygems' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RUBY_DEVEL',          with: { append_configure: '--enable-devel' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'OPT_THREADED_CODE=0',            with: { cppflags: '-DOPT_THREADED_CODE=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'OPT_THREADED_CODE=1',            with: { cppflags: '-DOPT_THREADED_CODE=1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'OPT_THREADED_CODE=2',            with: { cppflags: '-DOPT_THREADED_CODE=2' }, timeout-minutes: 5 }
 
-#         - { name: IBF_ISEQ_ENABLE_LOCAL_BUFFER,   env: { cppflags: '-DIBF_ISEQ_ENABLE_LOCAL_BUFFER' } }
+  compile8:
+    name: 'omnibus compilations, #8'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'NDEBUG',                         with: { cppflags: '-DNDEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RUBY_DEBUG',                     with: { cppflags: '-DRUBY_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'ARRAY_DEBUG',                    with: { cppflags: '-DARRAY_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'BIGNUM_DEBUG',                   with: { cppflags: '-DBIGNUM_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'CCAN_LIST_DEBUG',                with: { cppflags: '-DCCAN_LIST_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'CPDEBUG=-1',                     with: { cppflags: '-DCPDEBUG=-1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'ENC_DEBUG',                      with: { cppflags: '-DENC_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GC_DEBUG',                       with: { cppflags: '-DGC_DEBUG' }, timeout-minutes: 5 }
 
-#         - { name: RGENGC_ESTIMATE_OLDMALLOC,      env: { cppflags: '-DRGENGC_ESTIMATE_OLDMALLOC' } }
-#         - { name: RGENGC_FORCE_MAJOR_GC,          env: { cppflags: '-DRGENGC_FORCE_MAJOR_GC' } }
-#         - { name: RGENGC_OBJ_INFO,                env: { cppflags: '-DRGENGC_OBJ_INFO' } }
-#         - { name: RGENGC_OLD_NEWOBJ_CHECK,        env: { cppflags: '-DRGENGC_OLD_NEWOBJ_CHECK' } }
-#         - { name: RGENGC_PROFILE,                 env: { cppflags: '-DRGENGC_PROFILE' } }
+  compile9:
+    name: 'omnibus compilations, #9'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'HASH_DEBUG',                     with: { cppflags: '-DHASH_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'ID_TABLE_DEBUG',                 with: { cppflags: '-DID_TABLE_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RGENGC_DEBUG=-1',                with: { cppflags: '-DRGENGC_DEBUG=-1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'SYMBOL_DEBUG',                   with: { cppflags: '-DSYMBOL_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RGENGC_CHECK_MODE',              with: { cppflags: '-DRGENGC_CHECK_MODE' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'VM_CHECK_MODE',                  with: { cppflags: '-DVM_CHECK_MODE' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_EMBED_CI=0',                 with: { cppflags: '-DUSE_EMBED_CI=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_FLONUM=0',                   with: { cppflags: '-DUSE_FLONUM=0', append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
 
-#         - { name: VM_DEBUG_BP_CHECK,              env: { cppflags: '-DVM_DEBUG_BP_CHECK' } }
-#         - { name: VM_DEBUG_VERIFY_METHOD_CACHE,   env: { cppflags: '-DVM_DEBUG_VERIFY_METHOD_CACHE' } }
+  compileX:
+    name: 'omnibus compilations, #10'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'USE_LAZY_LOAD',                  with: { cppflags: '-DUSE_LAZY_LOAD' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_SYMBOL_GC=0',                with: { cppflags: '-DUSE_SYMBOL_GC=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_THREAD_CACHE=0',             with: { cppflags: '-DUSE_THREAD_CACHE=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_RUBY_DEBUG_LOG=1',           with: { cppflags: '-DUSE_RUBY_DEBUG_LOG=1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_DEBUG_COUNTER',              with: { cppflags: '-DUSE_DEBUG_COUNTER=1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'SHARABLE_MIDDLE_SUBSTRING',      with: { cppflags: '-DSHARABLE_MIDDLE_SUBSTRING=1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'DEBUG_FIND_TIME_NUMGUESS',       with: { cppflags: '-DDEBUG_FIND_TIME_NUMGUESS' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'DEBUG_INTEGER_PACK',             with: { cppflags: '-DDEBUG_INTEGER_PACK' }, timeout-minutes: 5 }
 
-          - { name: MJIT_FORCE_ENABLE,              env: { cppflags: '-DMJIT_FORCE_ENABLE' } }
-          - { name: YJIT_FORCE_ENABLE,              env: { cppflags: '-DYJIT_FORCE_ENABLE' } }
+  compileB:
+    name: 'omnibus compilations, #11'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'GC_DEBUG_STRESS_TO_CLASS',       with: { cppflags: '-DGC_DEBUG_STRESS_TO_CLASS' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GC_ENABLE_LAZY_SWEEP=0',         with: { cppflags: '-DGC_ENABLE_LAZY_SWEEP=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GC_PROFILE_DETAIL_MEMORY',       with: { cppflags: '-DGC_PROFILE_DETAIL_MEMORY' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GC_PROFILE_MORE_DETAIL',         with: { cppflags: '-DGC_PROFILE_MORE_DETAIL' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'MALLOC_ALLOCATED_SIZE_CHECK',    with: { cppflags: '-DMALLOC_ALLOCATED_SIZE_CHECK' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RGENGC_ESTIMATE_OLDMALLOC',      with: { cppflags: '-DRGENGC_ESTIMATE_OLDMALLOC' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RGENGC_PROFILE',                 with: { cppflags: '-DRGENGC_PROFILE' }, timeout-minutes: 5 }
 
-    name: ${{ matrix.entry.name }}
+  compileC:
+    name: 'omnibus compilations, #12'
     runs-on: ubuntu-latest
-    container:
-      image: ghcr.io/ruby/ruby-ci-image:${{ matrix.entry.container || matrix.entry.env.default_cc || 'clang-15' }}
-      options: --user root
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
-    env: ${{ matrix.entry.env || matrix.env }}
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - run: id
-        working-directory:
-      - run: mkdir build
-        working-directory:
-      - name: setenv
-        run: |
-          echo "GNUMAKEFLAGS=-sj$((1 + $(nproc --all)))" >> $GITHUB_ENV
-      - uses: actions/checkout@v3
-        with:
-          path: src
-      - uses: actions/cache@v3
-        with:
-          path: src/.downloaded-cache
-          key: downloaded-cache
-      - run: ./autogen.sh
-        working-directory: src
-      - name: Run configure
-        run: >
-          ../src/configure -C ${default_configure} ${append_configure}
-          --${{
-            matrix.entry.crosshost && 'host' || 'with-gcc'
-          }}=${{
-            matrix.entry.crosshost || '"${default_cc}${append_cc:+ $append_cc}"'
-          }}
-          --${{ matrix.entry.shared || 'enable' }}-shared
-      - run: make extract-extlibs
-      - run: make incs
-      - run: make showflags
-      - run: make
-      - run: make leaked-globals
-      - run: make test
-      - run: make install
-        if: ${{ matrix.entry.check }}
-      - run: make test-tool
-        if: ${{ matrix.entry.check }}
-      - run: make test-all TESTS='-- ruby -ext-'
-        if: ${{ matrix.entry.check }}
-      - run: make test-spec
-        env:
-          CHECK_LEAKS: true
-        if: ${{ matrix.entry.check }}
-      - run: make test-annocheck
-        if: ${{ matrix.entry.check && endsWith(matrix.entry.name, 'annocheck') }}
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'VM_DEBUG_BP_CHECK',              with: { cppflags: '-DVM_DEBUG_BP_CHECK' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'VM_DEBUG_VERIFY_METHOD_CACHE',   with: { cppflags: '-DVM_DEBUG_VERIFY_METHOD_CACHE' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'YJIT_FORCE_ENABLE',              with: { cppflags: '-DYJIT_FORCE_ENABLE' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'UNIVERSAL_PARSER',               with: { cppflags: '-DUNIVERSAL_PARSER' }, timeout-minutes: 5 }
 
-      - uses: ruby/action-slack@v3.0.0
+  compilemax:
+    name: 'omnibus compilations, result'
+    runs-on: ubuntu-latest
+    if: ${{ always() }}
+    needs:
+      - 'compile1'
+      - 'compile2'
+      - 'compile3'
+      - 'compile4'
+      - 'compile5'
+      - 'compile6'
+      - 'compile7'
+      - 'compile8'
+      - 'compile9'
+      - 'compileX'
+      - 'compileB'
+      - 'compileC'
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - uses: ./.github/actions/slack
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ github.workflow }} / ${{ matrix.entry.name }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
-        env:
+          label: 'omnibus'
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+      - run: false
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
 
 defaults:
   run:
diff --git a/.github/workflows/cygwin.yml b/.github/workflows/cygwin.yml
new file mode 100644
index 0000000000..ac73991fe8
--- /dev/null
+++ b/.github/workflows/cygwin.yml
@@ -0,0 +1,71 @@
+name: Cygwin
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  make:
+    runs-on: windows-2022
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - run: git config --global core.autocrlf input
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Setup Cygwin
+        uses: cygwin/cygwin-install-action@master
+        with:
+          packages: ruby gcc-core make autoconf libtool libssl-devel libyaml-devel libffi-devel zlib-devel rubygems
+
+      - name: configure
+        run: |
+          ./autogen.sh
+          ./configure --disable-install-doc
+        shell: C:\cygwin\bin\bash.EXE --noprofile --norc -e -o igncr -o pipefail {0}
+
+      - name: Extract bundled gems
+        run: |
+          make ruby -j5
+          make extract-gems
+        shell: C:\cygwin\bin\bash.EXE --noprofile --norc -e -o igncr -o pipefail {0}
+
+      - name: make all
+        timeout-minutes: 30
+        run: make -j4 V=1
+        shell: C:\cygwin\bin\bash.EXE --noprofile --norc -e -o igncr -o pipefail {0}
+
+      - uses: ./.github/actions/slack
+        with:
+          label: Cygwin
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/default_gems_list.yml b/.github/workflows/default_gems_list.yml
new file mode 100644
index 0000000000..1c7e2195c8
--- /dev/null
+++ b/.github/workflows/default_gems_list.yml
@@ -0,0 +1,99 @@
+name: Update default gems list
+on: [push, pull_request, merge_group]
+
+env:
+  UPDATE_NEWS_ENABLED: true
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  update_default_gems_list:
+    name: Update default gems list
+
+    permissions:
+      contents: write # for Git to git push
+
+    runs-on: ubuntu-latest
+
+    if: ${{ github.repository == 'ruby/ruby' }}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          token: ${{ (github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull')) && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - id: gems
+        run: true
+        if: ${{ github.ref == 'refs/heads/master' }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          makeup: true
+          # Skip overwriting MATZBOT_AUTO_UPDATE_TOKEN
+          checkout: '' # false (ref: https://github.com/actions/runner/issues/2238)
+        if: ${{ steps.gems.outcome == 'success' }}
+
+      - name: Download previous gems list
+        run: |
+          data=default_gems.json
+          mkdir -p .downloaded-cache
+          ln -s .downloaded-cache/$data .
+          curl -O -R -z ./$data https://stdgems.org/$data
+        if: ${{ steps.gems.outcome == 'success' }}
+
+      - name: Make default gems list
+        run: |
+          #!ruby
+          require 'rubygems'
+          $:.unshift "lib"
+          rgver = File.foreach("lib/rubygems.rb") do |line|
+            break $1 if /^\s*VERSION\s*=\s*"([^"]+)"/ =~ line
+          end
+          gems = Dir.glob("{ext,lib}/**/*.gemspec").map do |f|
+            spec = Gem::Specification.load(f)
+            "#{spec.name} #{spec.version}"
+          end.sort
+          File.open("gems/default_gems", "w") do |f|
+            f.puts "RubyGems #{rgver}"
+            f.puts gems
+          end
+        shell: ruby --disable=gems {0}
+        if: ${{ steps.gems.outcome == 'success' }}
+
+      - name: Maintain updated gems list in NEWS
+        run: |
+          ruby tool/update-NEWS-gemlist.rb default
+        if: ${{ steps.gems.outcome == 'success' && env.UPDATE_NEWS_ENABLED == 'true' }}
+
+      - name: Check diffs
+        id: diff
+        run: |
+          git diff --color --no-ext-diff --ignore-submodules --exit-code NEWS.md ||
+          echo update=true >> $GITHUB_OUTPUT
+        if: ${{ steps.gems.outcome == 'success' }}
+
+      - name: Commit
+        run: |
+          git pull --ff-only origin ${GITHUB_REF#refs/heads/}
+          git commit --message="Update default gems list at ${GITHUB_SHA:0:30} [ci skip]" NEWS.md
+          git push origin ${GITHUB_REF#refs/heads/}
+        env:
+          EMAIL: svn-admin@ruby-lang.org
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+        if: >-
+          ${{
+          github.repository == 'ruby/ruby' &&
+          !startsWith(github.event_name, 'pull') &&
+          steps.diff.outputs.update
+          }}
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/dependabot_automerge.yml b/.github/workflows/dependabot_automerge.yml
new file mode 100644
index 0000000000..a95c7005c4
--- /dev/null
+++ b/.github/workflows/dependabot_automerge.yml
@@ -0,0 +1,32 @@
+# from https://github.com/gofiber/swagger/blob/main/.github/workflows/dependabot_automerge.yml
+name: Dependabot auto-merge
+on:
+  pull_request:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.user.login == 'dependabot[bot]' && github.repository == 'ruby/ruby'
+    steps:
+      - name: Dependabot metadata
+        uses: dependabot/fetch-metadata@21025c705c08248db411dc16f3619e6b5f9ea21a # v2.5.0
+        id: metadata
+
+      - name: Wait for status checks
+        uses: lewagon/wait-on-check-action@3603e826ee561ea102b58accb5ea55a1a7482343 # v1.4.1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          check-regexp: 'make \(check, .*\)'
+          wait-interval: 30
+
+      - name: Auto-merge for Dependabot PRs
+        if: ${{ steps.metadata.outputs.update-type == 'version-update:semver-minor' || steps.metadata.outputs.update-type == 'version-update:semver-patch' }}
+        run: gh pr merge --auto --rebase "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GITHUB_TOKEN: ${{ secrets.MATZBOT_DEPENDABOT_MERGE_TOKEN }}
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
new file mode 100644
index 0000000000..16dbac1afa
--- /dev/null
+++ b/.github/workflows/labeler.yml
@@ -0,0 +1,12 @@
+name: "Pull Request Labeler"
+on:
+- pull_request_target
+
+jobs:
+  labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/labeler@v6
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 6865c218b1..29adcab39a 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -3,102 +3,199 @@ on:
   push:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
   pull_request:
-    paths-ignore:
-      - 'doc/**'
-      - '**.md'
-      - '**.rdoc'
-      - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions:
+  contents: read
+
 jobs:
   make:
     strategy:
       matrix:
-        test_task: ["check"] # "test-bundler-parallel", "test-bundled-gems"
-        os:
-          - macos-11
-          - macos-12
+        include:
+          - test_task: check
+            os: macos-14
+          - test_task: check
+            os: macos-14
+            configure_args: '--with-gcc=gcc-14'
+          - test_task: check
+            os: macos-14
+            configure_args: '--with-jemalloc --with-opt-dir=$(brew --prefix jemalloc)'
+          - test_task: check
+            os: macos-14
+            configure_args: '--with-gmp'
+          - test_task: test-all
+            test_opts: --repeat-count=2
+            os: macos-14
+          - test_task: test-bundler-parallel
+            os: macos-14
+          - test_task: test-bundled-gems
+            os: macos-14
+          - test_task: check
+            os: macos-15
       fail-fast: false
+
     env:
-      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+
     runs-on: ${{ matrix.os }}
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
     steps:
-      - run: mkdir build
-        working-directory:
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
-      - uses: actions/checkout@v3
-        with:
-          path: src
-      - uses: actions/cache@v3
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
-          path: src/.downloaded-cache
-          key: downloaded-cache
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
       - name: Install libraries
+        uses: ./.github/actions/setup/macos
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          clean: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 0 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: make sure that kern.coredump=1
         run: |
-          brew upgrade
-          brew install gmp libffi openssl@1.1 zlib autoconf automake libtool readline bison
-        working-directory: src
-      - name: Set ENV
+          sysctl -n kern.coredump
+          sudo sysctl -w kern.coredump=1
+          sudo chmod -R +rwx /cores/
+
+      - name: Delete unused SDKs
+        # To free up disk space to not run out during the run
         run: |
-          echo "MAKEFLAGS=-j$((1 + $(sysctl -n hw.activecpu)))" >> $GITHUB_ENV
-          echo "PATH="/usr/local/opt/bison/bin:$PATH"" >> $GITHUB_ENV
-      - run: ./autogen.sh
-        working-directory: src
+          sudo rm -rf ~/.dotnet
+          sudo rm -rf /Library/Android
+          sudo rm -rf /Library/Developer/CoreSimulator
+        continue-on-error: true
+
       - name: Run configure
-        run: ../src/configure -C --disable-install-doc --with-openssl-dir=$(brew --prefix openssl@1.1) --with-readline-dir=$(brew --prefix readline)
-      - run: make incs
+        run: ../src/configure -C --disable-install-doc ${ruby_configure_args} ${{ matrix.configure_args }}
+
       - run: make prepare-gems
         if: ${{ matrix.test_task == 'test-bundled-gems' }}
+
       - run: make
-      - run: make leaked-globals
-        if: ${{ matrix.test_task == 'check' }}
+
+      - run: make hello
+
+      - name: runirb
+        run: |
+          echo IRB::VERSION | make runirb RUNOPT="-- -f"
+
+      - name: Set test options for skipped tests
+        run: |
+          set -x
+          TESTS="$(echo "${{ matrix.skipped_tests }}" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|')"
+          echo "TESTS=${TESTS}" >> $GITHUB_ENV
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: ${{ matrix.os }}
+          test-opts: ${{ matrix.test_opts }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+        continue-on-error: true
+        timeout-minutes: 3
+
+      - name: Set extra test options
+        run: |
+          echo "TESTS=$TESTS ${{ matrix.test_opts }}" >> $GITHUB_ENV
+          echo "RUBY_TEST_TIMEOUT_SCALE=10" >> $GITHUB_ENV # With --repeat-count=2, flaky test by timeout occurs frequently for some reason
+        if: matrix.test_opts
+
       - name: make ${{ matrix.test_task }}
         run: |
-          make -s ${{ matrix.test_task }} ${TESTS:+TESTS=`echo "$TESTS" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|'`}
-        timeout-minutes: 40
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          ulimit -c unlimited
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"}
+        timeout-minutes: 90
         env:
-          RUBY_TESTOPTS: "-q --tty=no"
-          TESTS: ${{ matrix.test_task == 'check' && matrix.skipped_tests || '' }}
-          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ""
-          PRECHECK_BUNDLED_GEMS: "no"
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+
       - name: make skipped tests
         run: |
-          make -s test-all TESTS=`echo "$TESTS" | sed 's| |$$/ -n/|g;s|^|-n/|;s|$|$$/|'`
+          make -s test-all TESTS="${TESTS//-n!\//-n/}"
         env:
-          GNUMAKEFLAGS: ""
-          RUBY_TESTOPTS: "-v --tty=no"
-          TESTS: ${{ matrix.skipped_tests }}
-          PRECHECK_BUNDLED_GEMS: "no"
-        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests != '' }}
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+          PRECHECK_BUNDLED_GEMS: 'no'
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
         continue-on-error: ${{ matrix.continue-on-skipped_tests || false }}
-      - uses: ruby/action-slack@v3.0.0
+
+      - name: CAPI extensions
+        uses: ./.github/actions/capiext
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ matrix.os }} / ${{ matrix.test_task }}${{ matrix.configure }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
+          builddir: build
         env:
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ contains(matrix.extra_checks, 'capi') }}
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.os }} / ${{ matrix.test_task }}
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ failure() }}
+
+      - name: Resolve job ID
+        id: job_id
+        uses: actions/github-script@main
+        env:
+          matrix: ${{ toJson(matrix) }}
+        with:
+          script: |
+            const { data: workflow_run } = await github.rest.actions.listJobsForWorkflowRun({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              run_id: context.runId
+            });
+            const matrix = JSON.parse(process.env.matrix);
+            const job_name = `${context.job}${matrix ? ` (${Object.values(matrix).join(", ")})` : ""}`;
+            return workflow_run.jobs.find((job) => job.name === job_name).id;
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: macos-latest
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
 
 defaults:
   run:
diff --git a/.github/workflows/mingw.yml b/.github/workflows/mingw.yml
index 6f7af8ccf8..5c639ad48b 100644
--- a/.github/workflows/mingw.yml
+++ b/.github/workflows/mingw.yml
@@ -3,169 +3,241 @@ on:
   push:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
   pull_request:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions:
+  contents: read
+
 # Notes:
 # Actions console encoding causes issues, see test-all & test-spec steps
 #
 jobs:
   make:
-    runs-on: windows-2022
+    runs-on: windows-${{ matrix.os }}
+
     name: ${{ github.workflow }} (${{ matrix.msystem }})
+
     env:
       MSYSTEM: ${{ matrix.msystem }}
-      MSYS2_ARCH: x86_64
-      CHOST: "x86_64-w64-mingw32"
-      CFLAGS:   "-march=x86-64 -mtune=generic -O3 -pipe"
-      CXXFLAGS: "-march=x86-64 -mtune=generic -O3 -pipe"
-      CPPFLAGS: "-D_FORTIFY_SOURCE=2 -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048"
-      LDFLAGS:  "-pipe"
-      UPDATE_UNICODE: "UNICODE_FILES=. UNICODE_PROPERTY_FILES=. UNICODE_AUXILIARY_FILES=. UNICODE_EMOJI_FILES=."
-      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+      MSYS2_ARCH: >-
+        ${{
+        contains(matrix.msystem, 'arm64') && 'aarch64' ||
+        contains(matrix.msystem, '64') && 'x86_64' || 'i686'
+        }}
+      MINGW_PACKAGE_PREFIX: >-
+        mingw-w${{
+        endsWith(matrix.msystem, '64') && '64' || '32'
+        }}-${{
+        startsWith(matrix.msystem, 'clang') && 'clang' ||
+        startsWith(matrix.msystem, 'ucrt') && 'ucrt' ||
+        'mingw'
+        }}-${{
+        contains(matrix.msystem, 'arm64') && 'aarch64' ||
+        endsWith(matrix.msystem, '64') && 'x86_64' || 'i686'
+        }}
+      CFLAGS: '-mtune=generic -O3 -pipe'
+      CXXFLAGS: '-mtune=generic -O3 -pipe'
+      CPPFLAGS: '-D_FORTIFY_SOURCE=2 -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048'
+      LDFLAGS: '-pipe'
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+
     strategy:
       matrix:
         include:
           # To mitigate flakiness of MinGW CI, we test only one runtime that newer MSYS2 uses.
-          - msystem: "UCRT64"
-            base_ruby: head
-            test_task: "check"
-            test-all-opts: "--name=!/TestObjSpace#test_reachable_objects_during_iteration/"
+          # Ruby 3.2 is the first Windows Ruby to use OpenSSL 3.x
+          - msystem: 'UCRT64'
+            os: 2022
+            test_task: 'check'
+            test-all-opts: '--name=!/TestObjSpace#test_reachable_objects_during_iteration/'
+          - msystem: 'CLANGARM64'
+            os: 11-arm
+            test_task: 'check'
       fail-fast: false
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
     steps:
-      - run: mkdir build
-        working-directory:
-      - name: git config
-        run: |
-          git config --global core.autocrlf false
-          git config --global core.eol lf
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
-      - uses: actions/checkout@v3
-        with:
-          path: src
-      - uses: actions/cache@v3
+      - uses: msys2/setup-msys2@4f806de0a5a7294ffabaff804b38a9b435a73bda # v2.30.0
+        id: msys2
         with:
-          path: src/.downloaded-cache
-          key: downloaded-cache
-      - name: Set up Ruby & MSYS2
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.base_ruby }}
-      - name: set env
+          msystem: ${{ matrix.msystem }}
+          update: true
+          install: >-
+            git
+            make
+            ruby
+            autoconf
+            ${{ env.MINGW_PACKAGE_PREFIX }}-gcc
+            ${{ env.MINGW_PACKAGE_PREFIX }}-ragel
+            ${{ env.MINGW_PACKAGE_PREFIX }}-openssl
+            ${{ env.MINGW_PACKAGE_PREFIX }}-libyaml
+            ${{ env.MINGW_PACKAGE_PREFIX }}-libffi
+
+      - name: Set up env
+        id: setup-env
+        working-directory:
         run: |
-          echo "GNUMAKEFLAGS=-j$((2 * NUMBER_OF_PROCESSORS))" >> $GITHUB_ENV
+          $msys2 = ${env:MSYS2_LOCATION}
+          $msystem = ${env:MSYSTEM}.ToLower()
+          echo $msys2\usr\bin $msys2\$msystem\bin |
+            Tee-Object ${env:GITHUB_PATH} -Append -Encoding utf-8
+
+          # Use the fast device for the temporary directory.
+          # %TEMP% is inconsistent with %TMP% and test-all expects they are consistent.
+          # https://github.com/actions/virtual-environments/issues/712#issuecomment-613004302
+          $tmp = ${env:RUNNER_TEMP}
+          echo HOME=$home TMP=$tmp TEMP=$tmp TMPDIR=$tmp |
+            Tee-Object ${env:GITHUB_ENV} -Append -Encoding utf-8
+        shell: pwsh             # cmd.exe does not strip spaces before `|`.
+        env:
+          MSYS2_LOCATION: ${{ steps.msys2.outputs.msys2-location }}
+          MSYSTEM: ${{ matrix.msystem }}
 
-      - name: where check
-        run: |
-          # show where
-          mv /c/Windows/System32/libcrypto-1_1-x64.dll /c/Windows/System32/libcrypto-1_1-x64.dll_
-          mv /c/Windows/System32/libssl-1_1-x64.dll    /c/Windows/System32/libssl-1_1-x64.dll_
-          result=true
-          for e in gcc.exe ragel.exe make.exe bison.exe libcrypto-1_1-x64.dll libssl-1_1-x64.dll; do
-            echo '##['group']'$'\033[93m'$e$'\033[m'
-            where $e || result=false
-            echo '##['endgroup']'
-          done
-          $result
-
-      - name: version check
+      - name: Remove Strawberry Perl pkg-config
+        working-directory:
+        # `pkg-config.bat` included in Strawberry Perl is written in
+        # Perl and doesn't work when another msys2 `perl` precede its
+        # own `perl`.
+        #
+        # ```
+        # Can't find C:\Strawberry\perl\bin\pkg-config.bat on PATH, '.' not in PATH.
+        # ```
         run: |
-          # show version
-          result=true
-          for e in gcc ragel make bison "openssl version"; do
-            case "$e" in *" "*) ;; *) e="$e --version";; esac
-            echo '##['group']'$'\033[93m'$e$'\033[m'
-            $e || result=false
-            echo '##['endgroup']'
-          done
-          $result
-
-      - name: autogen
+          Get-Command pkg-config.bat | % { ren $_.path ($_.path + "~") }
+        shell: pwsh
+
+      - name: Misc system & package info
+        working-directory:
         run: |
-          ./autogen.sh
-        working-directory: src
+          group() { echo ::group::$'\e[94;1m'"$*"$'\e[m'; }
+          endgroup() { echo ::endgroup::; }
+
+          group Path
+          cygpath -wa / . $(type -p cygpath bash sh)
+          endgroup
+
+          I() {
+              group $1
+              run Where type -pa $1 && { [ $# -eq 1 ] || run Version "$@"; } ||
+                  failed+=($1)
+              endgroup
+          }
+          run() { local w m=$1; shift; w="$("$@")" && show "$m" && indent "$w"; }
+          indent() { [ -z "$1" ] || echo "$1" | /bin/sed '/^$/!s/^/  /'; }
+          show() { echo $'\e[96m'"$*"$'\e[m'; }
+
+          failed=()
+
+          I gcc.exe --version
+          I ragel.exe --version
+          I make.exe --version
+          I openssl.exe version
+          I libcrypto-3-x64.dll
+          I libssl-3-x64.dll
+
+          group Packages
+          pacman -Qs $MINGW_PACKAGE_PREFIX-* | /bin/sed -n "s,local/$MINGW_PACKAGE_PREFIX-,,p"
+          endgroup
+
+          [ ${#failed[@]} -eq 0 ]
+        shell: sh
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
 
       - name: configure
         run: >
           ../src/configure --disable-install-doc --prefix=/.
           --build=$CHOST --host=$CHOST --target=$CHOST
-
-      - name: update
-        run: |
-          make incs
-
-      - name: download gems
-        run: |
-          make update-gems
+        shell: sh
+        env:
+          CHOST: ${{ env.MSYS2_ARCH }}-w64-mingw32
 
       - name: make all
         timeout-minutes: 30
-        run: |
-          make
-
-      - run: make leaked-globals
+        run: make -j4
 
       - name: make install
-        run: |
-          make DESTDIR=../install install-nodoc
+        run: make DESTDIR=../install install-nodoc
+
+      - name: Set up Launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: windows-2022
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+          test-tasks: '["test", "test-all", "test-spec"]'
+        continue-on-error: true
+        timeout-minutes: 3
 
       - name: test
-        timeout-minutes: 5
-        run: |
-          make test
-        if: ${{matrix.test_task == 'check' || matrix.test_task == 'test'}}
+        timeout-minutes: 30
+        run: make test test-tool
+        env:
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ matrix.test_task == 'check' || matrix.test_task == 'test' }}
 
       - name: test-all
         timeout-minutes: 45
         run: |
-          # Actions uses UTF8, causes test failures, similar to normal OS setup
-          chcp.com 437
           make ${{ StartsWith(matrix.test_task, 'test/') && matrix.test_task || 'test-all' }}
         env:
           RUBY_TESTOPTS: >-
-            --retry --job-status=normal --show-skip --timeout-scale=1.5
+            --retry --job-status=normal --show-skip --timeout-scale=1.5 -j4
             ${{ matrix.test-all-opts }}
+            ${{ env.TESTS }}
           BUNDLER_VERSION:
-        if: ${{matrix.test_task == 'check' || matrix.test_task == 'test-all' || StartsWith(matrix.test_task, 'test/')}}
+        if: ${{ matrix.test_task == 'check' || matrix.test_task == 'test-all' || StartsWith(matrix.test_task, 'test/') }}
 
       - name: test-spec
         timeout-minutes: 10
         run: |
           make ${{ StartsWith(matrix.test_task, 'spec/') && matrix.test_task || 'test-spec' }}
-        if: ${{matrix.test_task == 'check' || matrix.test_task == 'test-spec' || StartsWith(matrix.test_task, 'spec/')}}
+        if: ${{ matrix.test_task == 'check' || matrix.test_task == 'test-spec' || StartsWith(matrix.test_task, 'spec/') }}
 
-      - uses: ruby/action-slack@v3.0.0
+      - uses: ./src/.github/actions/slack
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ github.workflow }} ${{ matrix.msystem }} / ${{ matrix.test_task }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
-        env:
+          label: ${{ matrix.msystem }} / ${{ matrix.test_task }}
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ failure() }}
 
 defaults:
   run:
     working-directory: build
-    shell: sh
+    shell: cmd
diff --git a/.github/workflows/mjit-bindgen.yml b/.github/workflows/mjit-bindgen.yml
deleted file mode 100644
index 1252d3b509..0000000000
--- a/.github/workflows/mjit-bindgen.yml
+++ /dev/null
@@ -1,102 +0,0 @@
-name: MJIT bindgen
-on:
-  push:
-    paths-ignore:
-      - 'doc/**'
-      - '**.md'
-      - '**.rdoc'
-      - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
-  pull_request:
-    paths-ignore:
-      - 'doc/**'
-      - '**.md'
-      - '**.rdoc'
-      - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
-
-concurrency:
-  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
-  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
-
-jobs:
-  make:
-    strategy:
-      matrix:
-        include:
-          - task: mjit-bindgen
-      fail-fast: false
-    env:
-      SETARCH: ${{ matrix.arch && format('setarch {0}', matrix.arch) }}
-    runs-on: ubuntu-20.04
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
-    steps:
-      - run: mkdir build
-        working-directory:
-      - name: Set ENV
-        run: |
-          echo "GNUMAKEFLAGS=-j$((1 + $(nproc --all)))" >> $GITHUB_ENV
-      - name: Install libraries
-        env:
-          arch: ${{ matrix.arch }}
-        run: |
-          set -x
-          arch=${arch:+:${arch/i[3-6]86/i386}}
-          ${arch:+sudo dpkg --add-architecture ${arch#:}}
-          sudo apt-get update -q || :
-          sudo apt-get install --no-install-recommends -q -y \
-          ${arch:+cross}build-essential${arch/:/-} \
-          libssl-dev${arch} libyaml-dev${arch} libreadline6-dev${arch} \
-          zlib1g-dev${arch} libncurses5-dev${arch} libffi-dev${arch} \
-          libclang1-10${arch} \
-          bison autoconf ruby
-          sudo apt-get install -q -y pkg-config${arch} || :
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
-      - uses: actions/checkout@v3
-        with:
-          path: src
-      - uses: actions/cache@v3
-        with:
-          path: src/.downloaded-cache
-          key: downloaded-cache
-      - 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' || :
-      - run: ./autogen.sh
-        working-directory: src
-      - name: Run configure
-        env:
-          arch: ${{ matrix.arch }}
-        run: >-
-          $SETARCH ../src/configure -C --disable-install-doc --prefix=$(pwd)/install --enable-yjit=dev_nodebug
-          ${arch:+--target=$arch-$OSTYPE --host=$arch-$OSTYPE}
-      - run: $SETARCH make incs
-      - run: $SETARCH make
-      - run: $SETARCH make install
-      - run: $SETARCH make ${{ matrix.task }}
-      - run: git diff --exit-code
-        working-directory: src
-      - uses: ruby/action-slack@v3.0.0
-        with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ matrix.os }} / ${{ matrix.test_task }}${{ matrix.configure }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
-        env:
-          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
-
-defaults:
-  run:
-    working-directory: build
diff --git a/.github/workflows/mjit.yml b/.github/workflows/mjit.yml
deleted file mode 100644
index c468e01811..0000000000
--- a/.github/workflows/mjit.yml
+++ /dev/null
@@ -1,103 +0,0 @@
-name: MJIT
-on:
-  push:
-    paths-ignore:
-      - 'doc/**'
-      - '**.md'
-      - '**.rdoc'
-      - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
-  pull_request:
-    paths-ignore:
-      - 'doc/**'
-      - '**.md'
-      - '**.rdoc'
-      - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
-
-concurrency:
-  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
-  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
-
-jobs:
-  make:
-    strategy:
-      matrix:
-        test_task: [ "check" ] # to make job names consistent
-        jit_opts: [ "--mjit", "--mjit-wait" ]
-      fail-fast: false
-    runs-on: ubuntu-latest
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
-    env:
-      TESTOPTS: '-q --tty=no'
-      RUN_OPTS: '--disable-gems ${{ matrix.jit_opts }} --mjit-debug=-ggdb3'
-      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
-    steps:
-      - run: mkdir build
-        working-directory:
-      - name: Install libraries
-        run: |
-          set -x
-          sudo apt-get update -q || :
-          sudo apt-get install --no-install-recommends -q -y build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev bison autoconf ruby
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
-      - uses: actions/checkout@v3
-        with:
-          path: src
-      - uses: actions/cache@v3
-        with:
-          path: src/.downloaded-cache
-          key: downloaded-cache
-      - 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 $d; done' || :
-      - name: Set ENV
-        run: |
-          echo "GNUMAKEFLAGS=-j$((1 + $(nproc --all)))" >> $GITHUB_ENV
-      - run: ./autogen.sh
-        working-directory: src
-      - name: Run configure
-        run: ../src/configure -C --disable-install-doc cppflags=-DVM_CHECK_MODE
-      - run: make incs
-      - run: make
-      - run: sudo make -s install
-      - run: sudo apt-get install gdb # used by test / test-all failure
-      - name: Run test
-        run: |
-          ulimit -c unlimited
-          make -s test RUN_OPTS="$RUN_OPTS"
-        timeout-minutes: 60
-      - name: Run test-all
-        run: |
-          ulimit -c unlimited
-          make -s test-all RUN_OPTS="$RUN_OPTS"
-        timeout-minutes: 60
-      - name: Run test-spec
-        run: |
-          ulimit -c unlimited
-          make -s test-spec RUN_OPTS="$RUN_OPTS"
-        timeout-minutes: 60
-      - uses: ruby/action-slack@v3.0.0
-        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_name }}"
-            }
-        env:
-          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
-
-defaults:
-  run:
-    working-directory: build
diff --git a/.github/workflows/modgc.yml b/.github/workflows/modgc.yml
new file mode 100644
index 0000000000..1d14934df8
--- /dev/null
+++ b/.github/workflows/modgc.yml
@@ -0,0 +1,176 @@
+name: ModGC
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  check:
+    strategy:
+      matrix:
+        gc:
+          - name: default
+          - name: mmtk
+            mmtk_build: release
+        os: [macos-latest, ubuntu-latest]
+        include:
+          - test_task: check
+      fail-fast: false
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUBY_DEBUG: ci
+
+    runs-on: ${{ matrix.os }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - name: Install libraries (macOS)
+        uses: ./.github/actions/setup/macos
+        if: ${{ contains(matrix.os, 'macos') }}
+
+      - name: Install libraries (Ubuntu)
+        uses: ./.github/actions/setup/ubuntu
+        if: ${{ contains(matrix.os, 'ubuntu') }}
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+        if: ${{ contains(matrix.os, 'ubuntu') }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          clean: true
+          dummy-files: false
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: make sure that kern.coredump=1
+        run: |
+          sysctl -n kern.coredump
+          sudo sysctl -w kern.coredump=1
+          sudo chmod -R +rwx /cores/
+        if: ${{ contains(matrix.os, 'macos') }}
+
+      - name: Delete unused SDKs
+        # To free up disk space to not run out during the run
+        run: |
+          sudo rm -rf ~/.dotnet
+          sudo rm -rf /Library/Android
+          sudo rm -rf /Library/Developer/CoreSimulator
+        continue-on-error: true
+        if: ${{ contains(matrix.os, 'macos') }}
+
+      - name: Setup Ruby GC Directory
+        run: |
+          echo "MODULAR_GC_DIR=$HOME/ruby_gc" >> $GITHUB_ENV
+
+      - name: Run configure
+        env:
+          arch: ${{ matrix.arch }}
+        run: >-
+          $SETARCH ../src/configure -C --disable-install-doc --with-modular-gc=${{ env.MODULAR_GC_DIR }}
+          ${arch:+--target=$arch-$OSTYPE --host=$arch-$OSTYPE}
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - name: Set MMTk environment variables
+        run: |
+          echo 'EXCLUDES=../src/test/.excludes-mmtk' >> $GITHUB_ENV
+          echo 'MSPECOPT=-B../src/spec/mmtk.mspec' >> $GITHUB_ENV
+        if: ${{ matrix.gc.name == 'mmtk' }}
+
+      - run: $SETARCH make
+
+      - name: Build Modular  GC
+        run: |
+          echo "RUBY_GC_LIBRARY=${{ matrix.gc.name }}" >> $GITHUB_ENV
+          make install-modular-gc MODULAR_GC=${{ matrix.gc.name }} MMTK_BUILD=${{ matrix.gc.mmtk_build }}
+          make distclean-modular-gc MODULAR_GC=${{ matrix.gc.name }}
+
+      - run: $SETARCH make hello
+
+      - name: Set test options for skipped tests
+        run: |
+          set -x
+          TESTS="$(echo "${{ matrix.skipped_tests }}" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|')"
+          echo "TESTS=${TESTS}" >> $GITHUB_ENV
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: ${{ matrix.os || 'ubuntu-22.04' }}
+          test-opts: ${{ matrix.configure }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+        continue-on-error: true
+        timeout-minutes: 3
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          $SETARCH make -s ${{ matrix.test_task }} \
+            ${TESTS:+TESTS="$TESTS"} \
+            ${{ !contains(matrix.test_task, 'bundle') && 'RUBYOPT=-w' || '' }}
+        timeout-minutes: ${{ matrix.gc.timeout || 40 }}
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+
+      - name: make skipped tests
+        run: |
+          $SETARCH make -s test-all TESTS="${TESTS//-n!\//-n/}"
+        env:
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+        continue-on-error: ${{ matrix.continue-on-skipped_tests || false }}
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}${{ matrix.arch }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/parse_y.yml b/.github/workflows/parse_y.yml
new file mode 100644
index 0000000000..87facc8a55
--- /dev/null
+++ b/.github/workflows/parse_y.yml
@@ -0,0 +1,100 @@
+name: parse.y
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  make:
+    strategy:
+      matrix:
+        include:
+          - test_task: check
+          - test_task: test-bundler-parallel
+          - test_task: test-bundled-gems
+      fail-fast: false
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUBY_DEBUG: ci
+      SETARCH: ${{ matrix.arch && format('setarch {0}', matrix.arch) }}
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          clean: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc cppflags=-DRUBY_DEBUG --with-parser=parse.y
+
+      - run: make
+
+      - run: make TESTRUN_SCRIPT='-renvutil -v -e "exit EnvUtil.current_parser == %[parse.y]"' run
+        env:
+          RUNOPT0: -I$(tooldir)/lib
+
+      - name: make ${{ matrix.test_task }}
+        run: make -s ${{ matrix.test_task }} RUN_OPTS="$RUN_OPTS" SPECOPTS="$SPECOPTS"
+        env:
+          RUBY_TESTOPTS: ${{ matrix.testopts }}
+          EXCLUDES: '../src/test/.excludes-parsey'
+          RUN_OPTS: ${{ matrix.run_opts || '--parser=parse.y' }}
+          SPECOPTS: ${{ matrix.specopts || '-T --parser=parse.y' }}
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.run_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/post_push.yml b/.github/workflows/post_push.yml
new file mode 100644
index 0000000000..318444c0a2
--- /dev/null
+++ b/.github/workflows/post_push.yml
@@ -0,0 +1,85 @@
+name: Post-push
+on:
+  push:
+    branches:
+      - master
+      - 'ruby_*_*'
+jobs:
+  hooks:
+    name: Post-push hooks
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'ruby/ruby' }}
+    steps:
+      - name: Sync git.ruby-lang.org
+        run: |
+          mkdir -p ~/.ssh
+          (umask 066; printenv RUBY_GIT_SYNC_PRIVATE_KEY > ~/.ssh/id_ed25519)
+          ssh-keyscan -t ed25519 git.ruby-lang.org >> ~/.ssh/known_hosts
+          ssh -i ~/.ssh/id_ed25519 git-sync@git.ruby-lang.org "sudo -u git /home/git/git.ruby-lang.org/bin/update-ruby.sh $GITHUB_REF"
+        env:
+          GITHUB_REF: ${{ github.ref }}
+          RUBY_GIT_SYNC_PRIVATE_KEY: ${{ secrets.RUBY_GIT_SYNC_PRIVATE_KEY }}
+        if: ${{ github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/ruby_') }}
+
+      - name: Fetch changesets on bugs.ruby-lang.org
+        run: |
+          curl "https://bugs.ruby-lang.org/sys/fetch_changesets?key=${REDMINE_SYS_API_KEY}" -s --fail-with-body -w '* status: %{http_code}\n'
+        env:
+          REDMINE_SYS_API_KEY: ${{ secrets.REDMINE_SYS_API_KEY }}
+        if: ${{ github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/ruby_') }}
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          fetch-depth: 500 # for notify-slack-commits
+          token: ${{ secrets.MATZBOT_AUTO_UPDATE_TOKEN }}
+
+      - name: Notify commit to Slack
+        run: ruby tool/notify-slack-commits.rb "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA" refs/heads/master
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.before }}
+          GITHUB_NEW_SHA: ${{ github.event.after }}
+          SLACK_WEBHOOK_URL_ALERTS: ${{ secrets.SLACK_WEBHOOK_URL_ALERTS }}
+          SLACK_WEBHOOK_URL_COMMITS: ${{ secrets.SLACK_WEBHOOK_URL_COMMITS }}
+          SLACK_WEBHOOK_URL_RUBY_JP: ${{ secrets.SLACK_WEBHOOK_URL_RUBY_JP }}
+        if: ${{ github.ref == 'refs/heads/master' }}
+
+      - name: Notify commit to ruby-cvs
+        run: |
+          SENDMAIL="ssh -i ${HOME}/.ssh/id_ed25519 git-sync@git.ruby-lang.org /usr/sbin/sendmail" \
+            ruby tool/commit-email.rb . ruby-cvs@g.ruby-lang.org \
+            "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA" "$GITHUB_REF" \
+            --viewer-uri "https://github.com/ruby/ruby/commit/" \
+            --error-to cvs-admin@ruby-lang.org
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.before }}
+          GITHUB_NEW_SHA: ${{ github.event.after }}
+          GITHUB_REF: ${{ github.ref }}
+        if: ${{ github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/ruby_') }}
+
+      - name: Auto-correct code styles
+        run: |
+          set -x
+          ruby tool/auto-style.rb "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA" refs/heads/master
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.before }}
+          GITHUB_NEW_SHA: ${{ github.event.after }}
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+          EMAIL: svn-admin@ruby-lang.org
+        if: ${{ github.ref == 'refs/heads/master' }}
+
+      - name: Push PR notes to GitHub
+        run: ruby tool/notes-github-pr.rb "$(pwd)/.git" "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA" refs/heads/master
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.before }}
+          GITHUB_NEW_SHA: ${{ github.event.after }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+          EMAIL: svn-admin@ruby-lang.org
+        if: ${{ github.ref == 'refs/heads/master' }}
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/pr-playground.yml b/.github/workflows/pr-playground.yml
new file mode 100644
index 0000000000..f3c0556429
--- /dev/null
+++ b/.github/workflows/pr-playground.yml
@@ -0,0 +1,127 @@
+name: Post Playground link to PR
+on:
+  pull_request_target:
+    types: [labeled]
+  workflow_run:
+    workflows: ["WebAssembly"]
+    types: [completed]
+
+jobs:
+  post-summary:
+    name: Post Playground link
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    # Post a comment only if the PR status check is passed and the PR is labeled with `Playground`.
+    # Triggered twice: when the PR is labeled and when PR build is passed.
+    if: >-
+      ${{ false
+      || (true
+        && github.event_name == 'pull_request_target'
+        && contains(github.event.pull_request.labels.*.name, 'Playground'))
+      || (true
+        && github.event_name == 'workflow_run'
+        && github.event.workflow_run.conclusion == 'success'
+        && github.event.workflow_run.event == 'pull_request')
+      }}
+    steps:
+      - uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const fs = require('fs/promises');
+
+            const buildWorkflowPath = '.github/workflows/wasm.yml';
+            const findSuccessfuBuildRun = async (pr) => {
+              const opts = github.rest.actions.listWorkflowRunsForRepo.endpoint.merge({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                status: 'success',
+                branch: pr.head.ref,
+              });
+              const runs = await github.paginate(opts);
+              const buildRun = runs.find(run => run.path == buildWorkflowPath);
+              return buildRun;
+            }
+
+            const postComment = async (body, pr) => {
+              const { data: comments } = await github.rest.issues.listComments({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: pr.number,
+              });
+
+              const commentOpts = { owner: context.repo.owner, repo: context.repo.repo, body: comment };
+
+              const existingComment = comments.find(comment => comment.body.startsWith(magicComment));
+              if (existingComment) {
+                core.info(`Updating existing comment: ${existingComment.html_url}`);
+                await github.rest.issues.updateComment({
+                  ...commentOpts, comment_id: existingComment.id
+                });
+              } else {
+                await github.rest.issues.createComment({
+                  ...commentOpts, issue_number: pr.number
+                });
+              }
+            }
+
+            const derivePRNumber = async () => {
+              if (context.payload.pull_request) {
+                return context.payload.pull_request.number;
+              }
+              // Workaround for https://github.com/orgs/community/discussions/25220
+
+              const { data: { artifacts } } = await github.rest.actions.listWorkflowRunArtifacts({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                run_id: context.payload.workflow_run.id,
+              });
+              const artifact = artifacts.find(artifact => artifact.name == 'github-pr-info');
+              if (!artifact) {
+                throw new Error('Cannot find github-pr-info.txt artifact');
+              }
+
+              const { data } = await github.rest.actions.downloadArtifact({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                artifact_id: artifact.id,
+                archive_format: 'zip',
+              });
+
+              await fs.writeFile('pr-info.zip', Buffer.from(data));
+              await exec.exec('unzip', ['pr-info.zip']);
+              return await fs.readFile('github-pr-info.txt', 'utf8');
+            }
+
+            const prNumber = await derivePRNumber();
+
+            const { data: pr } = await github.rest.pulls.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: prNumber,
+            });
+
+            core.info(`Checking if the PR ${prNumber} is labeled with Playground...`);
+            if (!pr.labels.some(label => label.name == 'Playground')) {
+              core.info(`The PR is not labeled with Playground.`);
+              return;
+            }
+
+            core.info(`Checking if the build is successful for ${pr.head.ref} in ${pr.head.repo.owner.login}/${pr.head.repo.name}...`);
+            const buildRun = await findSuccessfuBuildRun(pr);
+            if (!buildRun) {
+              core.info(`No successful build run found for ${buildWorkflowPath} on ${pr.head.ref} yet.`);
+              return;
+            }
+            core.info(`Found a successful build run: ${buildRun.html_url}`);
+
+            const runLink = `${process.env.GITHUB_SERVER_URL}/${process.env.GITHUB_REPOSITORY}/actions/runs/${process.env.GITHUB_RUN_ID}`;
+            const magicComment = `<!-- AUTO-GENERATED-COMMENT-PR-PLAYGROUND -->`;
+            const comment = `${magicComment}
+            **Try on Playground**: https://ruby.github.io/play-ruby?run=${buildRun.id}
+            This is an automated comment by [\`pr-playground.yml\`](${runLink}) workflow.
+            `;
+            core.info(`Comment: ${comment}`);
+            await postComment(comment, pr);
+
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 0000000000..3caeee9a3b
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,107 @@
+name: Publish Ruby packages
+
+on:
+  repository_dispatch:
+    types:
+      - release
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version of the Ruby package to release'
+        required: true
+        default: '3.3.4'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6.0.1
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.3.4
+
+      - name: Store Ruby version
+        run: |
+          echo "RUBY_VERSION=${{ github.event.client_payload.version || github.event.inputs.version }}" >> $GITHUB_ENV
+
+      - name: Store ABI version
+        run: echo "ABI_VERSION=$(echo ${{ env.RUBY_VERSION }} | cut -d '.' -f 1-2)" >> $GITHUB_ENV
+
+      - name: Copy draft package `/tmp` to `/pub` directory
+        run: tool/release.sh ${{ env.RUBY_VERSION }}
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.FTP_R_L_O_AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.FTP_R_L_O_AWS_SECRET_ACCESS_KEY }}
+          AWS_DEFAULT_REGION: us-west-2
+
+      - name: Purge URLs of release package
+        run: |
+          curl -X POST \
+            -H "Fastly-Key: ${{ secrets.FASTLY_PURGE_TOKEN }}" \
+            https://api.fastly.com/purge/cache.ruby-lang.org/pub/ruby/${{ env.ABI_VERSION }}/ruby-${{ env.RUBY_VERSION }}.tar.gz
+          curl -X POST \
+            -H "Fastly-Key: ${{ secrets.FASTLY_PURGE_TOKEN }}" \
+            https://api.fastly.com/purge/cache.ruby-lang.org/pub/ruby/${{ env.ABI_VERSION }}/ruby-${{ env.RUBY_VERSION }}.tar.xz
+          curl -X POST \
+            -H "Fastly-Key: ${{ secrets.FASTLY_PURGE_TOKEN }}" \
+            https://api.fastly.com/purge/cache.ruby-lang.org/pub/ruby/${{ env.ABI_VERSION }}/ruby-${{ env.RUBY_VERSION }}.zip
+
+      - name: Create a release on GitHub
+        run: |
+          RELEASE_TAG=$(ruby tool/ruby-version.rb tag "${{ env.RUBY_VERSION }}")
+          echo $RELEASE_TAG
+          PREVIOUS_RELEASE_TAG=$(ruby tool/ruby-version.rb previous-tag "${{ env.RUBY_VERSION }}")
+          echo $PREVIOUS_RELEASE_TAG
+          tool/gen-github-release.rb $PREVIOUS_RELEASE_TAG $RELEASE_TAG --no-dry-run
+        env:
+          GITHUB_TOKEN: ${{ secrets.MATZBOT_AUTO_UPDATE_TOKEN }}
+
+      - name: Update versions index
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/actions/dispatches \
+            -d '{"event_type": "update_index"}'
+
+      - name: Build and push Docker images
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/docker-images/actions/workflows/build.yml/dispatches \
+            -d '{"ref": "master", "inputs": {"ruby_version": "${{ env.RUBY_VERSION }}"}}'
+
+      - name: Build snapcraft packages
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/snap.ruby/dispatches \
+            -d '{"event_type": "build", "client_payload": {"ruby_version": "${{ env.RUBY_VERSION }}"}}'
+
+      - name: Store the latest LTS version of OpenSSL
+        run: |
+          echo "OPENSSL_VERSION=`curl -s https://api.github.com/repos/openssl/openssl/releases | jq -r '.[].tag_name | select(startswith("openssl-3.0"))' | sort -Vr | head -n1 | cut -d'-' -f2`" >> $GITHUB_ENV
+
+      - name: Update ruby-build definition
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.RUBY_BUILD_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/rbenv/ruby-build/dispatches \
+            -d '{"event_type": "update-ruby", "client_payload": {"ruby_version": "${{ env.RUBY_VERSION }}", "openssl_version": "${{ env.OPENSSL_VERSION }}"}}'
+
+      - name: Update all-ruby definition
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/all-ruby/dispatches \
+            -d '{"event_type": "update"}'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000000..5d4474d978
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,18 @@
+name: Start release workflow
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Build release package
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/actions/dispatches \
+            -d '{"event_type": "${{ github.ref }}"}'
diff --git a/.github/workflows/rust-warnings.yml b/.github/workflows/rust-warnings.yml
new file mode 100644
index 0000000000..a2e3208e52
--- /dev/null
+++ b/.github/workflows/rust-warnings.yml
@@ -0,0 +1,60 @@
+# Surface Rust warnings on PRs that touch any Rust code.
+# Not a required check so we never block people over new warnings
+# that might come from a new Rust version being released.
+name: Rust warnings
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    paths:
+      - '**.rs'
+      - '!**.inc.rs'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  rust-warnings:
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+
+    runs-on: ubuntu-24.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Install Rust
+        run: rustup default beta
+
+      - name: Rust warnings
+        shell: bash
+        run: |
+          set -eu
+          cargo check --quiet --all-features --message-format=json \
+            | jq -r 'select(.message.level | IN("warning", "error")) | .message.rendered' \
+            | tee messages.txt
+          (exit "${PIPESTATUS[0]}") && ! grep --quiet '[^[:space:]]' messages.txt
+
+      - name: "📜 `rustdoc` warnings"
+        shell: bash
+        run: |
+          set -eu
+          cargo doc --document-private-items --all --no-deps --message-format=json \
+            | jq -r 'select(.message.level | IN("warning", "error")) | .message.rendered' \
+            | tee messages.txt
+          (exit "${PIPESTATUS[0]}") && ! grep --quiet '[^[:space:]]' messages.txt
diff --git a/.github/workflows/scorecards.yml b/.github/workflows/scorecards.yml
index 53780dc282..c607098997 100644
--- a/.github/workflows/scorecards.yml
+++ b/.github/workflows/scorecards.yml
@@ -2,7 +2,7 @@
 # by a third-party and are governed by separate terms of service, privacy
 # policy, and support documentation.
 
-name: Scorecards supply-chain security
+name: Scorecard supply-chain security
 on:
   # For Branch-Protection check. Only the default branch is supported. See
   # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
@@ -10,17 +10,19 @@ on:
   # To guarantee Maintained check is occasionally updated. See
   # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
   schedule:
-    - cron: '22 4 * * 2'
-  push:
-    branches: [ "master" ]
+    - cron: '39 3 * * 5'
+  # push:
+  #   branches: [ "master" ]
 
 # Declare default permissions as read only.
 permissions: read-all
 
 jobs:
   analysis:
-    name: Scorecards analysis
+    name: Scorecard analysis
     runs-on: ubuntu-latest
+    # `publish_results: true` only works when run from the default branch. conditional can be removed if disabled.
+    if: github.event.repository.default_branch == github.ref_name || github.event_name == 'pull_request'
     permissions:
       # Needed to upload the results to code-scanning dashboard.
       security-events: write
@@ -32,20 +34,20 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           persist-credentials: false
 
       - name: "Run analysis"
-        uses: ossf/scorecard-action@99c53751e09b9529366343771cc321ec74e9bd3d # v2.0.6
+        uses: ossf/scorecard-action@4eaacf0543bb3f2c246792bd56e8cdeffafb205a # v2.4.3
         with:
           results_file: results.sarif
           results_format: sarif
-          # (Optional) Read-only PAT token. Uncomment the `repo_token` line below if:
+          # (Optional) "write" PAT token. Uncomment the `repo_token` line below if:
           # - you want to enable the Branch-Protection check on a *public* repository, or
-          # - you are installing Scorecards on a *private* repository
-          # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action#authentication-with-pat.
-          repo_token: ${{ secrets.SCORECARD_READ_TOKEN }}
+          # - you are installing Scorecard on a *private* repository
+          # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action?tab=readme-ov-file#authentication-with-fine-grained-pat-optional.
+          # repo_token: ${{ secrets.SCORECARD_TOKEN }}
 
           # Public repositories:
           #   - Publish results to OpenSSF REST API for easy access by consumers
@@ -56,17 +58,21 @@ jobs:
           #     of the value entered here.
           publish_results: true
 
+          # (Optional) Uncomment file_mode if you have a .gitattributes with files marked export-ignore
+          # file_mode: git
+
       # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
       # format to the repository Actions tab.
       - name: "Upload artifact"
-        uses: actions/upload-artifact@83fd05a356d7e2593de66fc9913b3002723633cb # v3.1.1
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: SARIF file
           path: results.sarif
           retention-days: 5
 
-      # Upload the results to GitHub's code scanning dashboard.
+      # Upload the results to GitHub's code scanning dashboard (optional).
+      # Commenting out will disable upload of results to your repo's Code Scanning dashboard
       - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@807578363a7869ca324a79039e6db9c843e0e100 # v2.1.27
+        uses: github/codeql-action/upload-sarif@v4
         with:
           sarif_file: results.sarif
diff --git a/.github/workflows/spec_guards.yml b/.github/workflows/spec_guards.yml
index 1991e016a3..cf4661555c 100644
--- a/.github/workflows/spec_guards.yml
+++ b/.github/workflows/spec_guards.yml
@@ -3,51 +3,65 @@ name: Rubyspec Version Guards Check
 on:
   push:
     paths:
+      - '.github/workflows/spec_guards.yml'
       - 'spec/**'
       - '!spec/*.md'
   pull_request:
-    paths-ignore:
+    paths:
+      - '.github/workflows/spec_guards.yml'
       - 'spec/**'
       - '!spec/*.md'
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions:
+  contents: read
+
 jobs:
   rubyspec:
     name: Rubyspec
-    runs-on: ubuntu-20.04
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
     strategy:
       matrix:
         # Specs from ruby/spec should still run on all supported Ruby versions.
         # This also ensures the needed ruby_version_is guards are there, see spec/README.md.
         ruby:
-          - ruby-2.7
-          - ruby-3.1
+          - ruby-3.2
+          - ruby-3.3
+          - ruby-3.4
+          - ruby-4.0
+      fail-fast: false
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: ruby/setup-ruby@v1
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler: none
+
       - run: gem install webrick
+
       - run: ruby ../mspec/bin/mspec
         working-directory: spec/ruby
         env:
           CHECK_LEAKS: true
-      - uses: ruby/action-slack@v3.0.0
+
+      - uses: ./.github/actions/slack
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ github.workflow }} / rubyspec @ ${{ matrix.ruby }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
-        env:
+          label: ${{ matrix.ruby }}
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ failure() }}
diff --git a/.github/workflows/sync_default_gems.yml b/.github/workflows/sync_default_gems.yml
new file mode 100644
index 0000000000..9ff97d5a4e
--- /dev/null
+++ b/.github/workflows/sync_default_gems.yml
@@ -0,0 +1,77 @@
+name: Sync default gems
+
+env:
+  DEFAULT_GEM_SYNC_ENABLED: true
+
+on:
+  workflow_dispatch:
+    inputs:
+      gem:
+        required: true
+        description: 'Name of the gem to be synchronized'
+        type: string
+      before:
+        required: true
+        description: 'Gem commit SHA before sync'
+        type: string
+      after:
+        required: true
+        description: 'Gem commit SHA after sync'
+        type: string
+
+jobs:
+  sync_default_gems:
+    name: Sync default gem ${{ github.event.inputs.gem }}
+
+    permissions:
+      contents: write # for Git to git push
+
+    runs-on: ubuntu-latest
+
+    if: ${{ github.repository == 'ruby/ruby' }}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        name: Check out ruby/ruby
+        with:
+          token: ${{ github.repository == 'ruby/ruby' && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.4'
+          bundler: none
+
+      - name: Run tool/sync_default_gems.rb
+        id: sync
+        run: |
+          ruby_before=$(git rev-parse HEAD)
+          set -x
+          ruby tool/sync_default_gems.rb "${gem_name}" "${gem_before}..${gem_after}"
+          if [[ "$(git rev-parse HEAD)" != "$ruby_before" ]]; then
+            echo update=true >> $GITHUB_OUTPUT
+          fi
+        env:
+          gem_name: ${{ github.event.inputs.gem }}
+          gem_before: ${{ github.event.inputs.before }}
+          gem_after: ${{ github.event.inputs.after }}
+          EMAIL: svn-admin@ruby-lang.org
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+
+      - name: Push
+        run: |
+          git pull --rebase origin ${GITHUB_REF#refs/heads/}
+          git push origin ${GITHUB_REF#refs/heads/}
+        if: ${{ steps.sync.outputs.update && env.DEFAULT_GEM_SYNC_ENABLED == 'true' }}
+        env:
+          EMAIL: svn-admin@ruby-lang.org
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+          label: "${{ github.event.inputs.gem }} (<https://github.com/${{ github.event.inputs.gem == 'rubygems' && 'rubygems' || 'ruby' }}/${{ github.event.inputs.gem }}/compare/${{ github.event.inputs.before }}...${{ github.event.inputs.after }}|diff>)"
+          event_name: workflow_dispatch
+          extra_channel_id: C05FPKAU743 # alerts-sync
+        if: ${{ failure() }}
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 508d2c7733..88c19b6fe6 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -3,136 +3,266 @@ on:
   push:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
   pull_request:
-    paths-ignore:
-      - 'doc/**'
-      - '**.md'
-      - '**.rdoc'
-      - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions:
+  contents: read
+
 jobs:
   make:
     strategy:
       matrix:
-        # main variables included in the job name
-        test_task: [check]
-        configure: [cppflags=-DRUBY_DEBUG] # default to use more assertions
-        arch: ['']
-        # specify all jobs with `include` to avoid testing duplicated things
+        # We enumerate every job in matrix.include to save build time
         include:
           - test_task: check
+            configure: 'cppflags=-DVM_CHECK_MODE'
           - test_task: check
             arch: i686
-            configure: '' # test without -DRUBY_DEBUG as well
           - test_task: check
-            configure: "--enable-shared --enable-load-relative"
-          - test_task: test-all TESTS=--repeat-count=2
-          - test_task: test-syntax-suggest
+            configure: '--disable-yjit'
+          - test_task: check
+            configure: '--enable-shared --enable-load-relative'
           - test_task: test-bundler-parallel
+            timeout: 50
           - test_task: test-bundled-gems
+          - test_task: check
+            os: ubuntu-24.04
+            extra_checks: [capi]
+          # ubuntu-24.04-arm jobs don't start on ruby/ruby as of 2025-10-29
+          #- test_task: check
+          #  os: ubuntu-24.04-arm
       fail-fast: false
-    env:
-      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+
+    env: &make-env
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
       RUBY_DEBUG: ci
-      SETARCH: ${{ matrix.arch && format('setarch {0}', matrix.arch) }}
-    runs-on: ubuntu-20.04
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
-    steps:
-      - run: mkdir build
-        working-directory:
-      - name: Set ENV
-        run: |
-          echo "GNUMAKEFLAGS=-j$((1 + $(nproc --all)))" >> $GITHUB_ENV
-      - name: Install libraries
-        env:
-          arch: ${{matrix.arch}}
-        run: |
-          set -x
-          arch=${arch:+:${arch/i[3-6]86/i386}}
-          ${arch:+sudo dpkg --add-architecture ${arch#:}}
-          sudo apt-get update -q || :
-          sudo apt-get install --no-install-recommends -q -y \
-          ${arch:+cross}build-essential${arch/:/-} \
-          libssl-dev${arch} libyaml-dev${arch} libreadline6-dev${arch} \
-          zlib1g-dev${arch} libncurses5-dev${arch} libffi-dev${arch} \
-          bison autoconf ruby
-          sudo apt-get install -q -y pkg-config${arch} || :
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
-      - uses: actions/checkout@v3
+
+    runs-on: ${{ matrix.os || 'ubuntu-22.04' }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps: &make-steps
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
-          path: src
-      - uses: actions/cache@v3
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/ubuntu
         with:
-          path: src/.downloaded-cache
-          key: downloaded-cache
-      - 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' || :
-      - run: ./autogen.sh
-        working-directory: src
+          arch: ${{ matrix.arch }}
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+        if: >-
+          ${{ !endsWith(matrix.os, 'arm')
+          && !endsWith(matrix.os, 'ppc64le') && !endsWith(matrix.os, 's390x') }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          clean: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
       - name: Run configure
         env:
-          arch: ${{matrix.arch}}
+          arch: ${{ matrix.arch }}
+          configure: ${{ matrix.configure }}
         run: >-
-          $SETARCH ../src/configure -C --disable-install-doc ${{ matrix.configure }}
+          $SETARCH ../src/configure -C --disable-install-doc ${configure:-cppflags=-DRUBY_DEBUG}
           ${arch:+--target=$arch-$OSTYPE --host=$arch-$OSTYPE}
-      - run: $SETARCH make incs
+
       - run: $SETARCH make prepare-gems
         if: ${{ matrix.test_task == 'test-bundled-gems' }}
+
       - run: $SETARCH make
-      - run: $SETARCH make leaked-globals
-        if: ${{ matrix.test_task == 'check' }}
-      - name: Create dummy files in build dir
+
+      - run: $SETARCH make hello
+
+      - name: runirb
         run: |
-          $SETARCH ./miniruby -e '(("a".."z").to_a+("A".."Z").to_a+("0".."9").to_a+%w[foo bar test zzz]).each{|basename|File.write("#{basename}.rb", "raise %(do not load #{basename}.rb)")}'
-        if: ${{ matrix.test_task == 'check' }}
+          echo IRB::VERSION | $SETARCH make runirb RUNOPT="-- -f"
+
+      - name: Set test options for skipped tests
+        run: |
+          set -x
+          TESTS="$(echo "${{ matrix.skipped_tests }}" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|')"
+          echo "TESTS=${TESTS}" >> $GITHUB_ENV
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: ${{ matrix.os || 'ubuntu-22.04' }}
+          test-opts: ${{ matrix.configure }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+        continue-on-error: true
+        timeout-minutes: 3
+
+      # Avoid possible test failures with the zlib applying the following patch
+      # on s390x CPU architecture.
+      # https://github.com/madler/zlib/pull/410
+      - name: Disable DFLTCC
+        run: echo "DFLTCC=0" >> $GITHUB_ENV
+        if: ${{ endsWith(matrix.os, 's390x') }}
+
       - name: make ${{ matrix.test_task }}
         run: |
-          $SETARCH make -s ${{ matrix.test_task }} ${TESTS:+TESTS=`echo "$TESTS" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|'`}
-        timeout-minutes: 40
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          $SETARCH make -s ${{ matrix.test_task }} \
+          ${TESTS:+TESTS="$TESTS"} \
+          ${{ !contains(matrix.test_task, 'bundle') && 'RUBYOPT=-w' || '' }}
+        timeout-minutes: ${{ matrix.timeout || 40 }}
         env:
-          RUBY_TESTOPTS: "-q --tty=no"
-          TESTS: ${{ matrix.test_task == 'check' && matrix.skipped_tests || '' }}
-          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ""
-          PRECHECK_BUNDLED_GEMS: "no"
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+
       - name: make skipped tests
         run: |
-          $SETARCH make -s test-all TESTS=`echo "$TESTS" | sed 's| |$$/ -n/|g;s|^|-n/|;s|$|$$/|'`
+          $SETARCH make -s test-all TESTS="${TESTS//-n!\//-n/}"
         env:
-          GNUMAKEFLAGS: ""
-          RUBY_TESTOPTS: "-v --tty=no"
-          TESTS: ${{ matrix.skipped_tests }}
-        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests != '' }}
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
         continue-on-error: ${{ matrix.continue-on-skipped_tests || false }}
-      - uses: ruby/action-slack@v3.0.0
+
+      - name: test-pc
+        run: |
+          DESTDIR=${RUNNER_TEMP-${TMPDIR-/tmp}}/installed
+          $SETARCH make test-pc "DESTDIR=$DESTDIR"
+
+      - name: CAPI extensions
+        uses: ./.github/actions/capiext
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ github.workflow }} / ${{ matrix.test_task }} ${{ matrix.configure }}${{ matrix.arch }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
+          builddir: build
+          make: '$SETARCH make'
         env:
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ contains(matrix.extra_checks, 'capi') }}
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}${{ matrix.arch }}${{ matrix.os }}
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ failure() }}
+
+  make-ibm:
+    strategy:
+      matrix:
+        include:
+          - test_task: check
+            os: ubuntu-24.04-ppc64le
+          - test_task: check
+            os: ubuntu-24.04-s390x
+      fail-fast: false
+
+    env: *make-env
+
+    runs-on: ${{ matrix.os }}
+
+    if: >-
+      ${{github.repository == 'ruby/ruby'
+      && !(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps: *make-steps
+
+  # Separated from `make` job to avoid making it a required status check
+  ruby-bench:
+    strategy:
+      matrix:
+        include:
+          # Using the same setup as ZJIT jobs
+          - bench_opts: '--warmup=1 --bench=1 --excludes=lobsters'
+
+    runs-on: ubuntu-24.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --prefix="$(pwd)/install"
+
+      - run: make install
+
+      - name: Checkout ruby-bench
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          repository: ruby/ruby-bench
+          path: ruby-bench
+
+      # If you want to skip failing benchmark, consider using `--excludes`.
+      # e.g. `bench_opts: '--warmup=1 --bench=1 --excludes=railsbench,lobsters'`
+      - name: Run ruby-bench
+        run: ruby run_benchmarks.rb -e "ruby::../build/install/bin/ruby" ${{ matrix.bench_opts }}
+        working-directory: ruby-bench
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ruby-bench ${{ matrix.bench_opts }} ${{ matrix.ruby_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: ubuntu-latest
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
 
 defaults:
   run:
diff --git a/.github/workflows/wasm.yml b/.github/workflows/wasm.yml
index 6999ea5882..0d2a6f0545 100644
--- a/.github/workflows/wasm.yml
+++ b/.github/workflows/wasm.yml
@@ -3,64 +3,80 @@ on:
   push:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
   pull_request:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions: # added using https://github.com/step-security/secure-workflows
+  contents: read
+
 jobs:
   make:
     strategy:
       matrix:
         entry:
 #         # wasmtime can't compile non-optimized Asyncified binary due to locals explosion
-#         - { name: O0-debuginfo, optflags: "-O0", debugflags: "-g", wasmoptflags: "-O1" }
-#         - { name: O1,           optflags: "-O1", debugflags: ""  , wasmoptflags: "-O1" }
-          - { name: O2,           optflags: "-O2", debugflags: ""  , wasmoptflags: "-O2" }
-#         - { name: O3,           optflags: "-O3", debugflags: ""  , wasmoptflags: "-O3" }
+#         - { name: O0-debuginfo, optflags: '-O0', debugflags: '-g', wasmoptflags: '-O1' }
+#         - { name: O1,           optflags: '-O1', debugflags: ''  , wasmoptflags: '-O1' }
+          - { name: O2, optflags: '-O2', debugflags: '', wasmoptflags: '-O2' }
+#         - { name: O3,           optflags: '-O3', debugflags: ''  , wasmoptflags: '-O3' }
 #         # -O4 is equivalent to -O3 in clang, but it's different in wasm-opt
-#         - { name: O4,           optflags: "-O3", debugflags: ""  , wasmoptflags: "-O4" }
-#         - { name: Oz,           optflags: "-Oz", debugflags: ""  , wasmoptflags: "-Oz" }
+#         - { name: O4,           optflags: '-O3', debugflags: ''  , wasmoptflags: '-O4' }
+#         - { name: Oz,           optflags: '-Oz', debugflags: ''  , wasmoptflags: '-Oz' }
       fail-fast: false
+
     env:
       RUBY_TESTOPTS: '-q --tty=no'
-      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
-      WASI_SDK_VERSION_MAJOR: 14
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      WASI_SDK_VERSION_MAJOR: 25
       WASI_SDK_VERSION_MINOR: 0
-      BINARYEN_VERSION: 109
-      WASMTIME_VERSION: v0.33.0
-    runs-on: ubuntu-20.04
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
+      BINARYEN_VERSION: 113
+      WASMTIME_VERSION: v15.0.0
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
     steps:
-      - run: mkdir build
-        working-directory:
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/directories
         with:
-          path: src
+          srcdir: src
+          builddir: build
+          makeup: true
+
       - name: Install libraries
         run: |
           set -ex
           sudo apt-get update -q || :
-          sudo apt-get install --no-install-recommends -q -y ruby bison make autoconf git wget
+          sudo apt-get install --no-install-recommends -q -y ruby make autoconf git wget
 
-          wasi_sdk_deb="wasi-sdk_${WASI_SDK_VERSION_MAJOR}.${WASI_SDK_VERSION_MINOR}_amd64.deb"
+          wasi_sdk_deb="wasi-sdk-${WASI_SDK_VERSION_MAJOR}.${WASI_SDK_VERSION_MINOR}-x86_64-linux.deb"
           wget "https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION_MAJOR}/${wasi_sdk_deb}"
           sudo dpkg -i "$wasi_sdk_deb"
           rm -f "$wasi_sdk_deb"
@@ -77,17 +93,38 @@ jobs:
           wget -O - "$binaryen_url" | tar xfz -
           sudo ln -fs "$PWD/binaryen-version_${BINARYEN_VERSION}/bin/wasm-opt" /usr/local/bin/wasm-opt
         working-directory: src
+
       - name: Set ENV
         run: |
-          echo "MAKEFLAGS=-j$((1 + $(sysctl -n hw.activecpu)))" >> $GITHUB_ENV
           echo "WASI_SDK_PATH=/opt/wasi-sdk" >> $GITHUB_ENV
-      - run: ./autogen.sh
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      - name: Build baseruby
+        run: |
+          set -ex
+          mkdir ../baseruby
+          pushd ../baseruby
+          ../src/configure --prefix=$PWD/install
+          make
+          make install
+
+      - name: Download config.guess with wasi version
+        run: |
+          rm tool/config.guess tool/config.sub
+          ruby tool/downloader.rb -d tool -e gnu config.guess config.sub
         working-directory: src
+
       - name: Run configure
         run: |
           ../src/configure \
             --host wasm32-unknown-wasi \
+            --with-baseruby=$PWD/../baseruby/install/bin/ruby \
             --with-static-linked-ext \
+            --with-ext=cgi/escape,continuation,coverage,date,digest/bubblebabble,digest,digest/md5,digest/rmd160,digest/sha1,digest/sha2,etc,fcntl,json,json/generator,json/parser,objspace,pathname,rbconfig/sizeof,ripper,stringio,strscan,monitor \
             LDFLAGS=" \
               -Xlinker --stack-first \
               -Xlinker -z -Xlinker stack-size=16777216 \
@@ -98,15 +135,45 @@ jobs:
 
       # miniruby may not be built when cross-compling
       - run: make mini ruby
+
+      - run: make install DESTDIR=$PWD/../install
+      - run: tar cfz ../install.tar.gz -C ../install .
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        with:
+          name: ruby-wasm-install
+          path: ${{ github.workspace }}/install.tar.gz
+      - name: Show Playground URL to try the build
+        run: |
+          echo "Try on Playground: https://ruby.github.io/play-ruby?run=$GITHUB_RUN_ID" >> $GITHUB_STEP_SUMMARY
+
       - name: Run basictest
         run: wasmtime run ./../build/miniruby --mapdir /::./ -- basictest/test.rb
         working-directory: src
+
       - name: Run bootstraptest (no thread)
         run: |
           NO_THREAD_TESTS="$(grep -L Thread -R ./bootstraptest | awk -F/ '{ print $NF }' | uniq | sed -n 's/test_\(.*\).rb/\1/p' | paste -s -d, -)"
           ruby ./bootstraptest/runner.rb --ruby="$(which wasmtime) run $PWD/../build/ruby --mapdir /::./ -- " --verbose "--sets=$NO_THREAD_TESTS"
         working-directory: src
 
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.entry.name }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+      # Workaround for https://github.com/orgs/community/discussions/25220
+      - name: Save Pull Request number
+        if: ${{ github.event_name == 'pull_request' }}
+        run: echo "${{ github.event.pull_request.number }}" >> ${{ github.workspace }}/github-pr-info.txt
+      - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        if: ${{ github.event_name == 'pull_request' }}
+        with:
+          name: github-pr-info
+          path: ${{ github.workspace }}/github-pr-info.txt
+
 defaults:
   run:
     working-directory: build
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 7f96d3464b..1d44a5482c 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -3,154 +3,197 @@ on:
   push:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
   pull_request:
-    paths-ignore:
-      - 'doc/**'
-      - '**.md'
-      - '**.rdoc'
-      - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions:
+  contents: read
+
 jobs:
   make:
     strategy:
       matrix:
         include:
-          - vs: 2019
-          - vs: 2022
+          - os: 2022
+            vc: 2022
+            test_task: check
+          - os: 2025
+            vc: 2022
+            test_task: check
+          - os: 11-arm
+            test_task: 'btest test-basic test-tool' # check and test-spec are broken yet.
+            target: arm64
+          - os: 2025
+            vc: 2022
+            test_task: test-bundled-gems
       fail-fast: false
-    runs-on: windows-${{ matrix.vs < 2022 && '2019' || matrix.vs }}
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
-    name: VisualStudio ${{ matrix.vs }}
+
+    runs-on: windows-${{ matrix.os }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    name: Windows ${{ matrix.os }}/Visual C++ ${{ matrix.vc }} (${{ matrix.test_task }})
+
     env:
-      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
-      PATCH: C:\msys64\usr\bin\patch.exe
-      OS_VER: windows-${{ matrix.vs < 2022 && '2019' || matrix.vs }}
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      VCPKG_DEFAULT_TRIPLET: ${{ matrix.target || 'x64' }}-windows
+
     steps:
       - run: md build
         working-directory:
-      - uses: msys2/setup-msys2@v2
-        id: setup-msys2
-        with:
-          update: true
-          install: >-
-            patch
-        if: ${{ env.OS_VER != 'windows-2019' }}
-      - name: patch path
-        shell: msys2 {0}
-        run: echo PATCH=$(cygpath -wa $(command -v patch)) >> $GITHUB_ENV
-        if: ${{ steps.setup-msys2.outcome == 'success' }}
-      - uses: actions/cache@v3
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
-          path: C:\vcpkg\downloads
-          key: ${{ runner.os }}-vcpkg-download-${{ env.OS_VER }}-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-vcpkg-download-${{ env.OS_VER }}-
-            ${{ runner.os }}-vcpkg-download-
-      - uses: actions/cache@v3
+          # windows-11-arm has only 3.4.1, 3.4.2, 3.4.3, head
+          ruby-version: ${{ !endsWith(matrix.os, 'arm') && '3.1' || '3.4' }}
+          bundler: none
+          windows-toolchain: none
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
-          path: C:\vcpkg\installed
-          key: ${{ runner.os }}-vcpkg-installed-${{ matrix.os }}-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-vcpkg-installed-${{ matrix.os }}-
-            ${{ runner.os }}-vcpkg-installed-
-      - name: Install libraries with vcpkg
-        run: |
-          vcpkg --triplet x64-windows install libffi libyaml openssl readline zlib
-      - uses: actions/cache@v3
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/directories
         with:
-          path: C:\Users\runneradmin\AppData\Local\Temp\chocolatey
-          key: ${{ runner.os }}-chocolatey-${{ env.OS_VER }}-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-chocolatey-${{ env.OS_VER }}-
-            ${{ runner.os }}-chocolatey-
-      - name: Install libraries with chocolatey
+          srcdir: src
+          builddir: build
+          make-command: nmake
+          clean: true
+
+      - name: Install tools with scoop
         run: |
-          # Using Choco-Install for retries, but it doesn't detect failures properly
-          # if you pass multiple package names in a single command.
-          Choco-Install -PackageName winflexbison3
+          Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
+          iwr -useb get.scoop.sh | iex
+          Join-Path (Resolve-Path ~).Path "scoop\shims" >> $Env:GITHUB_PATH
+          scoop install vcpkg uutils-coreutils
         shell: pwsh
-      - name: git config
-        run: |
-          git config --global core.autocrlf false
-          git config --global core.eol lf
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
-      - uses: actions/checkout@v3
+
+      - name: Restore vcpkg artifact
+        id: restore-vcpkg
+        uses: actions/cache/restore@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5.0.2
         with:
-          path: src
-      - uses: actions/cache@v3
+          path: src\vcpkg_installed
+          key: windows-${{ matrix.os }}-vcpkg-${{ hashFiles('src/vcpkg.json') }}
+
+      - name: Install libraries with vcpkg
+        run: |
+          vcpkg install --vcpkg-root=%USERPROFILE%\scoop\apps\vcpkg\current
+        working-directory: src
+        if: ${{ ! steps.restore-vcpkg.outputs.cache-hit }}
+
+      - name: Save vcpkg artifact
+        uses: actions/cache/save@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5.0.2
         with:
-          path: src/.downloaded-cache
-          key: downloaded-cache
+          path: src\vcpkg_installed
+          key: windows-${{ matrix.os }}-vcpkg-${{ hashFiles('src/vcpkg.json') }}
+        if: ${{ ! steps.restore-vcpkg.outputs.cache-hit && (github.ref_name == 'master' || startsWith(github.ref_name, 'ruby_')) }}
+
       - name: setup env
+        # Available Ruby versions: https://github.com/actions/runner-images/blob/main/images/windows/Windows2019-Readme.md#ruby
         # %TEMP% is inconsistent with %TMP% and test-all expects they are consistent.
         # https://github.com/actions/virtual-environments/issues/712#issuecomment-613004302
         run: |
-          set VS=${{ matrix.vs }}
-          set VCVARS=${{ matrix.vcvars }}
-          if not "%VCVARS%" == "" goto :vcset
-            set VCVARS="C:\Program Files (x86)\Microsoft Visual Studio\%VS%\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
-            if not exist %VCVARS% set VCVARS="C:\Program Files\Microsoft Visual Studio\%VS%\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
-          :vcset
-          set | C:\msys64\usr\bin\sort > old.env
-          call %VCVARS%
-          set TMP=%USERPROFILE%\AppData\Local\Temp
-          set TEMP=%USERPROFILE%\AppData\Local\Temp
+          ::- Set up VC ${{ matrix.vc }}
+          set | sort > old.env
+          call ..\src\win32\vssetup.cmd ^
+            -arch=${{ matrix.target || 'amd64' }} ^
+            ${{ matrix.vcvars && '-vcvars_ver=' || '' }}${{ matrix.vcvars }}
+          nmake -f nul
+          set TMP=%RUNNER_TEMP%
+          set TEMP=%RUNNER_TEMP%
+          set MAKEFLAGS=l
           set /a TEST_JOBS=(15 * %NUMBER_OF_PROCESSORS% / 10) > nul
-          set | C:\msys64\usr\bin\sort > new.env
-          C:\msys64\usr\bin\comm -13 old.env new.env >> %GITHUB_ENV%
+          set RUBY_OPT_DIR=%GITHUB_WORKSPACE:\=/%/src/vcpkg_installed/%VCPKG_DEFAULT_TRIPLET%
+          set | sort > new.env
+          comm -13 old.env new.env >> %GITHUB_ENV%
           del *.env
+
+      - name: baseruby version
+        run: ruby -v
+
       - name: compiler version
         run: cl
-      - name: link libraries
-        run: |
-          for %%I in (C:\vcpkg\installed\x64-windows\bin\*.dll) do (
-            if not %%~nI == readline mklink %%~nxI %%I
-          )
-          for %%I in (libcrypto-1_1-x64 libssl-1_1-x64) do (
-            ren c:\Windows\System32\%%I.dll %%I.dll_
-          )
+
+      - name: volume info
+        run: Get-Volume
+        shell: pwsh
+
+      # TODO: We should use `../src` instead of `D:/a/ruby/ruby/src`
       - name: Configure
         run: >-
           ../src/win32/configure.bat --disable-install-doc
-          --with-opt-dir=C:/vcpkg/installed/x64-windows
+          --with-opt-dir=%RUBY_OPT_DIR%
+          --with-gmp
+
+      - run: nmake prepare-vcpkg
+
       - run: nmake incs
+
       - run: nmake extract-extlibs
+
+      # On all other platforms, test-spec depending on extract-gems (in common.mk) is enough.
+      # But not for this Visual Studio workflow. So here we extract gems before building.
+      - run: nmake extract-gems
+
+      # windows-11-arm runner cannot run `ruby tool/file2lastrev.rb --revision.h --output=revision.h`
+      - name: make revision.h
+        run: |
+          win32\lastrev.bat | win32\ifchange.bat --timestamp=.revision.time revision.h -
+          type revision.h
+        working-directory: src
+
       - run: nmake
-        env:
-          YACC: win_bison
-      - run: nmake test
-        timeout-minutes: 5
-      - run: nmake test-spec
-        timeout-minutes: 10
-      - run: nmake test-all
-        env:
-          RUBY_TESTOPTS: -j${{env.TEST_JOBS}} --job-status=normal
-        timeout-minutes: 60
-      - uses: ruby/action-slack@v3.0.0
+
+      - name: Set up Launchable
+        uses: ./.github/actions/launchable/setup
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "VS${{ matrix.vs }} / ${{ matrix.test_task || 'check' }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
+          os: windows-${{ matrix.os }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+          test-task: ${{ matrix.test_task || 'check' }}
+        continue-on-error: true
+        if: ${{ matrix.test_task != 'test-bundled-gems' }}
+        timeout-minutes: 3
+
+      - run: nmake ${{ matrix.test_task || 'check' }}
         env:
+          RUBY_TESTOPTS: -j${{ env.TEST_JOBS || 4 }}
+        timeout-minutes: 70
+
+      - uses: ./.github/actions/slack
+        with:
+          label: Windows ${{ matrix.os }} / VC ${{ matrix.vc }} / ${{ matrix.test_task || 'check' }}
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: windows-latest
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
 
 defaults:
   run:
diff --git a/.github/workflows/wsl.yml b/.github/workflows/wsl.yml
new file mode 100644
index 0000000000..640f18ce42
--- /dev/null
+++ b/.github/workflows/wsl.yml
@@ -0,0 +1,70 @@
+name: Ubuntu on WSL
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+jobs:
+  wsl:
+    runs-on: windows-2025
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - name: Install or update WSL
+        uses: Ubuntu/WSL/.github/actions/wsl-install@main
+        with:
+          distro: Ubuntu-24.04
+
+      - name: Install dependencies
+        uses: Ubuntu/WSL/.github/actions/wsl-bash@main
+        with:
+         distro: Ubuntu-24.04
+         working-dir: /tmp/github/
+         exec: |
+            DEBIAN_FRONTEND=noninteractive sudo apt update
+            DEBIAN_FRONTEND=noninteractive sudo apt install -y ruby build-essential autoconf libssl-dev libyaml-dev zlib1g-dev libgmp-dev libffi-dev
+
+      - name: Check out the repository
+        uses: Ubuntu/WSL/.github/actions/wsl-checkout@main
+        with:
+          distro: Ubuntu-24.04
+          working-dir: /tmp/github/
+          submodules: true
+
+      - name: Build
+        uses: Ubuntu/WSL/.github/actions/wsl-bash@main
+        with:
+         distro: Ubuntu-24.04
+         working-dir: /tmp/github/
+         exec: |
+            ./autogen.sh
+            ./configure --disable-install-doc
+            make ruby -j4
+            make extract-gems
+            make -j4
+
+      - name: Test
+        uses: Ubuntu/WSL/.github/actions/wsl-bash@main
+        with:
+         distro: Ubuntu-24.04
+         working-dir: /tmp/github/
+         exec: |
+            ./ruby -v
+            # make check TESTS="-j4" MSPECOPT="-j"
diff --git a/.github/workflows/yjit-macos.yml b/.github/workflows/yjit-macos.yml
new file mode 100644
index 0000000000..a59b4d6508
--- /dev/null
+++ b/.github/workflows/yjit-macos.yml
@@ -0,0 +1,198 @@
+name: YJIT macOS
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  cargo:
+    name: cargo test
+
+    runs-on: macos-14
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - run: RUST_BACKTRACE=1 cargo test
+        working-directory: yjit
+
+      # Also compile and test with all features enabled
+      - run: RUST_BACKTRACE=1 cargo test --all-features
+        working-directory: yjit
+
+      # Check that we can build in release mode too
+      - run: cargo build --release
+        working-directory: yjit
+
+  make:
+    strategy:
+      matrix:
+        include:
+          - test_task: 'check'
+            configure: '--enable-yjit'
+            yjit_opts: '--yjit'
+          - test_task: 'check'
+            configure: '--enable-yjit=dev'
+            yjit_opts: '--yjit-call-threshold=1 --yjit-verify-ctx --yjit-code-gc'
+            specopts: '-T --yjit-call-threshold=1 -T --yjit-verify-ctx -T --yjit-code-gc'
+      fail-fast: false
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUN_OPTS: ${{ matrix.yjit_opts }}
+      SPECOPTS: ${{ matrix.specopts }}
+
+    runs-on: macos-14
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - name: Install libraries
+        uses: ./.github/actions/setup/macos
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc ${{ matrix.configure }}
+
+      - run: make prepare-gems
+        if: ${{ matrix.test_task == 'test-bundled-gems' }}
+
+      - run: make
+
+      - name: Verify that --yjit-dump-disasm works
+        run: |
+          ./miniruby --yjit-call-threshold=1 --yjit-dump-disasm -e0 | \
+          wc -l | \
+          ruby -ne 'raise "Disassembly seems broken in dev build (output has too few lines)" unless $_.to_i > 10'
+        if: ${{ contains(matrix.configure, 'jit=dev') }}
+
+      - name: Set ENV for YJIT
+        run: |
+          echo "RUBY_YJIT_ENABLE=1" >> $GITHUB_ENV
+          echo "RUBY_CRASH_REPORT=$(pwd)/rb_crash_%p.txt" >> $GITHUB_ENV
+
+      - name: Set test options for skipped tests
+        run: |
+          set -x
+          TESTS="$(echo "${{ matrix.skipped_tests }}" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|')"
+          echo "TESTS=${TESTS}" >> $GITHUB_ENV
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: macos-14
+          test-opts: ${{ matrix.configure }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+          is-yjit: true
+        continue-on-error: true
+        timeout-minutes: 3
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          set -x
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
+            RUN_OPTS="$RUN_OPTS" \
+            SPECOPTS="$SPECOPTS"
+        timeout-minutes: 60
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          SYNTAX_SUGGEST_TIMEOUT: '5'
+          PRECHECK_BUNDLED_GEMS: 'no'
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+        continue-on-error: ${{ matrix.continue-on-test_task || false }}
+
+      - name: make skipped tests
+        run: |
+          make -s test-all TESTS="${TESTS//-n!\//-n/}"
+        env:
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+          PRECHECK_BUNDLED_GEMS: 'no'
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+        continue-on-error: ${{ matrix.continue-on-skipped_tests || false }}
+
+      - name: Dump crash logs
+        if: ${{ failure() }}
+        continue-on-error: true
+        run: |
+          tail --verbose --lines=+1 rb_crash_*.txt
+          exit 1
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }} ${{ matrix.yjit_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: macos-14
+    needs: [make]
+    steps:
+      - name: ${{ github.workflow }} jobs have failed
+        run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/yjit-ubuntu.yml b/.github/workflows/yjit-ubuntu.yml
index d0e50154d2..150f0b3275 100644
--- a/.github/workflows/yjit-ubuntu.yml
+++ b/.github/workflows/yjit-ubuntu.yml
@@ -3,151 +3,237 @@ on:
   push:
     paths-ignore:
       - 'doc/**'
+      - '**/man/*'
       - '**.md'
       - '**.rdoc'
       - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+      - '.*.yml'
   pull_request:
-    paths-ignore:
-      - 'doc/**'
-      - '**.md'
-      - '**.rdoc'
-      - '**/.document'
-      - '**.[1-8]'
-      - '**.ronn'
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 
+permissions:
+  contents: read
+
 jobs:
   cargo:
-    name: Rust cargo test
+    name: cargo test
+
     # GitHub Action's image seems to already contain a Rust 1.58.0.
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
       # For now we can't run cargo test --offline because it complains about the
       # capstone dependency, even though the dependency is optional
       #- run: cargo test --offline
+
       - run: RUST_BACKTRACE=1 cargo test
         working-directory: yjit
+
       # Also compile and test with all features enabled
       - run: RUST_BACKTRACE=1 cargo test --all-features
         working-directory: yjit
+
       # Check that we can build in release mode too
       - run: cargo build --release
         working-directory: yjit
+
+  lint:
+    name: cargo clippy
+
+    # GitHub Action's image seems to already contain a Rust 1.58.0.
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      # Check that we don't have linting errors in release mode, too
+      - run: cargo clippy --all-targets --all-features
+        working-directory: yjit
+
   make:
     strategy:
       fail-fast: false
       matrix:
         include:
-          - test_task: "check-yjit-bindings"
-            configure: "--with-gcc=clang-12 --enable-yjit=dev"
+          - test_task: 'yjit-bindgen'
+            hint: 'To fix: use patch in logs'
+            # Build with YJIT+ZJIT for output that works in the most number of configurations
+            configure: '--with-gcc=clang-14 --enable-yjit=dev --enable-zjit'
+            libclang_path: '/usr/lib/llvm-14/lib/libclang.so.1'
 
-          - test_task: "check"
-            configure: "--enable-yjit RUSTC='rustc +1.58.1'" # release build
-            rust_version: "1.58.1"
+          - test_task: 'check'
+            # YJIT should be automatically built in release mode on x86-64 Linux with rustc present
+            #configure: "--enable-yjit RUSTC='rustc +1.58.0'"
+            configure: "RUSTC='rustc +1.58.0'"
+            rust_version: '1.58.0'
 
-          - test_task: "check"
-            configure: "--enable-yjit=dev"
+          - test_task: 'check'
+            configure: '--enable-yjit=dev'
 
-          - test_task: "check"
-            configure: "--enable-yjit=dev"
-            yjit_opts: "--yjit-call-threshold=1 --yjit-verify-ctx"
+          - test_task: 'check'
+            configure: '--enable-yjit=dev'
+            yjit_opts: '--yjit-call-threshold=1 --yjit-verify-ctx --yjit-code-gc'
+            specopts: '-T --yjit-call-threshold=1 -T --yjit-verify-ctx -T --yjit-code-gc'
 
-          - test_task: "test-all TESTS=--repeat-count=2"
-            configure: "--enable-yjit=dev"
+          - test_task: 'test-bundled-gems'
+            configure: '--enable-yjit=dev'
 
-          - test_task: "test-bundled-gems"
-            configure: "--enable-yjit=dev"
-
-          - test_task: "yjit-bench"
-            configure: "--enable-yjit=dev"
-            yjit_bench_opts: "--yjit-stats"
     env:
-      GITPULLOPTIONS: --no-tags origin ${{github.ref}}
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
       RUN_OPTS: ${{ matrix.yjit_opts }}
       YJIT_BENCH_OPTS: ${{ matrix.yjit_bench_opts }}
+      SPECOPTS: ${{ matrix.specopts }}
       RUBY_DEBUG: ci
-      BUNDLE_JOBS: 8 # for yjit-bench
-    runs-on: ubuntu-20.04
-    if: ${{ !contains(github.event.head_commit.message, '[DOC]') && !contains(github.event.pull_request.labels.*.name, 'Documentation') }}
+      RUST_BACKTRACE: 1
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
     steps:
-      - run: mkdir build
-        working-directory:
-      - name: Install libraries
-        run: |
-          set -x
-          sudo apt-get update -q || :
-          sudo apt-get install --no-install-recommends -q -y build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev bison autoconf ruby
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
       - name: Install Rust
         if: ${{ matrix.rust_version }}
         run: rustup install ${{ matrix.rust_version }} --profile minimal
-      - name: git config
-        run: |
-          git config --global advice.detachedHead 0
-          git config --global init.defaultBranch garbage
-      - uses: actions/checkout@v3
-        with:
-          path: src
-      - uses: actions/cache@v3
-        with:
-          path: src/.downloaded-cache
-          key: downloaded-cache
-      - 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 $d; done' || :
-      - name: Set ENV
-        run: |
-          echo "GNUMAKEFLAGS=-j$((1 + $(nproc --all)))" >> $GITHUB_ENV
-      - run: ./autogen.sh
-        working-directory: src
+
+      - name: Remove cargo
+        # Since this tests a `rustc` build for release, remove `cargo` to ensure
+        # that only `rustc` is used.
+        if: ${{ contains(matrix.configure, 'rustc') }}
+        run: sudo rm $(which -a cargo | uniq)
+
       - name: Run configure
         run: ../src/configure -C --disable-install-doc --prefix=$(pwd)/install ${{ matrix.configure }}
+
       - run: make incs
+
       - run: make prepare-gems
         if: ${{ matrix.test_task == 'test-bundled-gems' }}
-      - run: make -j
-      - run: make leaked-globals
-        if: ${{ matrix.test_task == 'check' }}
-      - name: Create dummy files in build dir
+
+      - run: make
+
+      - name: Verify that --yjit-dump-disasm works
+        run: |
+          ./miniruby --yjit-call-threshold=1 --yjit-dump-disasm -e0 | \
+          wc -l | \
+          ruby -ne 'raise "Disassembly seems broken in dev build (output has too few lines)" unless $_.to_i > 10'
+        if: ${{ contains(matrix.configure, 'jit=dev') }}
+
+      - name: Set ENV for YJIT
         run: |
-          ./miniruby -e '(("a".."z").to_a+("A".."Z").to_a+("0".."9").to_a+%w[foo bar test zzz]).each{|basename|File.write("#{basename}.rb", "raise %(do not load #{basename}.rb)")}'
-        if: ${{ matrix.test_task == 'check' }}
-      - name: Enable YJIT through ENV
-        run: echo "RUBY_YJIT_ENABLE=1" >> $GITHUB_ENV
+          echo "RUBY_YJIT_ENABLE=1" >> $GITHUB_ENV
+          echo "RUBY_CRASH_REPORT=$(pwd)/rb_crash_%p.txt" >> $GITHUB_ENV
+
+      # Check that the binary was built with YJIT
+      - name: Check YJIT enabled
+        run: ./miniruby --yjit -v | grep "+YJIT"
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: ubuntu-22.04
+          test-opts: ${{ matrix.configure }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+          is-yjit: true
+        continue-on-error: true
+        timeout-minutes: 3
+
       - name: make ${{ matrix.test_task }}
-        run: make -s -j ${{ matrix.test_task }} RUN_OPTS="$RUN_OPTS" YJIT_BENCH_OPTS="$YJIT_BENCH_OPTS"
-        timeout-minutes: 60
-        env:
-          RUBY_TESTOPTS: "-q --tty=no"
-          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ""
-          PRECHECK_BUNDLED_GEMS: "no"
-        continue-on-error: ${{ matrix.test_task == 'yjit-bench' }}
-      - name: Show ${{ github.event.pull_request.base.ref }} GitHub URL for yjit-bench comparison
-        run: echo "https://github.com/${BASE_REPO}/commit/${BASE_SHA}"
+        run: |
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          set -x
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
+            RUN_OPTS="$RUN_OPTS" MSPECOPT=--debug SPECOPTS="$SPECOPTS" \
+            YJIT_BENCH_OPTS="$YJIT_BENCH_OPTS" YJIT_BINDGEN_DIFF_OPTS="$YJIT_BINDGEN_DIFF_OPTS"
+        timeout-minutes: 90
         env:
-          BASE_REPO: ${{ github.event.pull_request.base.repo.full_name }}
-          BASE_SHA: ${{ github.event.pull_request.base.sha }}
-        if: ${{ matrix.test_task == 'yjit-bench' && startsWith(github.event_name, 'pull') }}
-      - uses: ruby/action-slack@v3.0.0
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          SYNTAX_SUGGEST_TIMEOUT: '5'
+          YJIT_BINDGEN_DIFF_OPTS: '--exit-code'
+          LIBCLANG_PATH: ${{ matrix.libclang_path }}
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+        continue-on-error: ${{ matrix.continue-on-test_task || false }}
+
+      - name: Dump crash logs
+        if: ${{ failure() }}
+        continue-on-error: true
+        run: |
+          tail --verbose --lines=+1 rb_crash_*.txt
+          exit 1
+
+      - uses: ./.github/actions/slack
         with:
-          payload: |
-            {
-              "ci": "GitHub Actions",
-              "env": "${{ github.workflow }} / ${{ matrix.test_task }} ${{ matrix.configure }}",
-              "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
-              "commit": "${{ github.sha }}",
-              "branch": "${{ github.ref_name }}"
-            }
-        env:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
-        if: ${{ failure() && github.event_name == 'push' }}
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: ubuntu-latest
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
 
 defaults:
   run:
diff --git a/.github/workflows/zjit-macos.yml b/.github/workflows/zjit-macos.yml
new file mode 100644
index 0000000000..a638907811
--- /dev/null
+++ b/.github/workflows/zjit-macos.yml
@@ -0,0 +1,214 @@
+name: ZJIT macOS
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  make:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - test_task: 'check'
+            run_opts: '--zjit-call-threshold=1'
+            specopts: '-T --zjit-call-threshold=1'
+            configure: '--enable-zjit=dev'
+
+          - test_task: 'check'
+            run_opts: '--zjit-disable-hir-opt --zjit-call-threshold=1'
+            specopts: '-T --zjit-disable-hir-opt -T --zjit-call-threshold=1'
+            configure: '--enable-zjit=dev'
+
+          - test_task: 'zjit-check' # zjit-test + quick feedback of test_zjit.rb
+            configure: '--enable-yjit=dev --enable-zjit'
+            rust_version: "1.85.0"
+
+          - test_task: 'ruby'
+            hint: 'combo build test'
+            configure: '--enable-yjit --enable-zjit'
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUN_OPTS: ${{ matrix.run_opts }}
+      SPECOPTS: ${{ matrix.specopts }}
+      TESTOPTS: ${{ matrix.testopts }}
+      ZJIT_RB_BUG: 1
+
+    runs-on: macos-14
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - name: Install libraries
+        uses: ./.github/actions/setup/macos
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: Install Rust
+        if: ${{ matrix.rust_version }}
+        run: |
+          rustup install ${{ matrix.rust_version }} --profile minimal
+          rustup default ${{ matrix.rust_version }}
+
+      - uses: taiki-e/install-action@v2
+        with:
+          tool: nextest@0.9
+        if: ${{ matrix.test_task == 'zjit-check' }}
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc ${{ matrix.configure }}
+
+      - run: make
+
+      - name: Verify that --zjit-dump-disasm works
+        run: |
+          ./miniruby --zjit-call-threshold=1 --zjit-dump-disasm -e0 | \
+          wc -l | \
+          ruby -ne 'raise "Disassembly seems broken in dev build (output has too few lines)" unless $_.to_i > 10'
+        if: ${{ contains(matrix.configure, 'jit=dev') }}
+
+      - name: Set ENV for ZJIT
+        run: |
+          echo "RUBY_CRASH_REPORT=$(pwd)/rb_crash_%p.txt" >> $GITHUB_ENV
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          set -x
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
+            RUN_OPTS="$RUN_OPTS" \
+            SPECOPTS="$SPECOPTS" \
+            TESTOPTS="$TESTOPTS"
+        timeout-minutes: 60
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          EXCLUDES: '../src/test/.excludes-zjit'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          SYNTAX_SUGGEST_TIMEOUT: '5'
+          PRECHECK_BUNDLED_GEMS: 'no'
+        continue-on-error: ${{ matrix.continue-on-test_task || false }}
+
+      - name: Dump crash logs
+        if: ${{ failure() }}
+        continue-on-error: true
+        run: |
+          tail --verbose --lines=+1 rb_crash_*.txt
+          exit 1
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: macos-14
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+  # Separated from `make` job to avoid making it a required status check for now
+  ruby-bench:
+    strategy:
+      matrix:
+        include:
+          # Test --call-threshold=2 with 2 iterations in total
+          - ruby_opts: '--zjit-call-threshold=2'
+            bench_opts: '--warmup=1 --bench=1 --excludes=lobsters'
+            configure: '--enable-zjit=dev_nodebug' # --enable-zjit=dev is too slow
+
+    runs-on: macos-14
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/macos
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --prefix="$(pwd)/install" ${{ matrix.configure }}
+
+      - run: make install
+
+      # setup/directories set MAKEFLAGS=-j4 for macOS, which randomly fails sqlite3.gem builds
+      - name: Unset MAKEFLAGS
+        run: echo "MAKEFLAGS=" >> "$GITHUB_ENV"
+
+      - name: Checkout ruby-bench
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          repository: ruby/ruby-bench
+          path: ruby-bench
+
+      # If you want to skip failing benchmark, consider using `--excludes`.
+      # e.g. `bench_opts: '--warmup=1 --bench=1 --excludes=railsbench,lobsters'`
+      - name: Run ruby-bench
+        run: ruby run_benchmarks.rb -e "zjit::../build/install/bin/ruby ${{ matrix.ruby_opts }}" ${{ matrix.bench_opts }}
+        working-directory: ruby-bench
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ruby-bench ${{ matrix.bench_opts }} ${{ matrix.ruby_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/zjit-ubuntu.yml b/.github/workflows/zjit-ubuntu.yml
new file mode 100644
index 0000000000..28bfec963e
--- /dev/null
+++ b/.github/workflows/zjit-ubuntu.yml
@@ -0,0 +1,267 @@
+name: ZJIT Ubuntu
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    name: cargo clippy
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - run: cargo clippy --all-targets --all-features
+        working-directory: zjit
+
+  make:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - test_task: 'check'
+            run_opts: '--zjit-call-threshold=1'
+            specopts: '-T --zjit-call-threshold=1'
+            configure: '--enable-zjit=dev'
+
+          - test_task: 'check'
+            run_opts: '--zjit-disable-hir-opt --zjit-call-threshold=1'
+            specopts: '-T --zjit-disable-hir-opt -T --zjit-call-threshold=1'
+            configure: '--enable-zjit=dev'
+
+            # The optimizer benefits from at least 1 iteration of profiling. Also, many
+            # regression tests in bootstraptest/test_yjit.rb assume call-threshold=2.
+          - test_task: 'btest'
+            run_opts: '--zjit-call-threshold=2'
+            configure: '--enable-zjit=dev'
+
+          - test_task: 'zjit-check' # zjit-test + quick feedback of test_zjit.rb
+            configure: '--enable-yjit --enable-zjit=dev'
+            rust_version: '1.85.0'
+
+          - test_task: 'zjit-bindgen'
+            hint: 'To fix: use patch in logs'
+            # Build with YJIT+ZJIT for output that works in the most number of configurations
+            configure: '--enable-zjit=dev --enable-yjit --with-gcc=clang-16'
+            clang_path: '/usr/bin/clang-16'
+            runs-on: 'ubuntu-24.04' # for clang-16
+
+          - test_task: 'test-bundled-gems'
+            configure: '--enable-zjit=dev'
+            run_opts: '--zjit-call-threshold=1'
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUN_OPTS: ${{ matrix.run_opts }}
+      YJIT_BENCH_OPTS: ${{ matrix.yjit_bench_opts }}
+      SPECOPTS: ${{ matrix.specopts }}
+      TESTOPTS: ${{ matrix.testopts }}
+      RUBY_DEBUG: ci
+      BUNDLE_JOBS: 8 # for yjit-bench
+      RUST_BACKTRACE: 1
+      ZJIT_RB_BUG: 1
+
+    runs-on: ${{ matrix.runs-on || 'ubuntu-22.04' }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      - uses: taiki-e/install-action@v2
+        with:
+          tool: nextest@0.9
+        if: ${{ matrix.test_task == 'zjit-check' }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: Install Rust
+        if: ${{ matrix.rust_version }}
+        run: |
+          rustup install ${{ matrix.rust_version }} --profile minimal
+          rustup default ${{ matrix.rust_version }}
+
+      - name: Install rustfmt
+        if: ${{ matrix.test_task == 'zjit-bindgen' }}
+        run: rustup component add rustfmt
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --prefix=$(pwd)/install ${{ matrix.configure }}
+
+      - run: make incs
+
+      - run: make prepare-gems
+        if: ${{ matrix.test_task == 'test-bundled-gems' }}
+
+      - run: make
+
+      - name: Verify that --zjit-dump-disasm works
+        run: |
+          ./miniruby --zjit-call-threshold=1 --zjit-dump-disasm -e0 | \
+          wc -l | \
+          ruby -ne 'raise "Disassembly seems broken in dev build (output has too few lines)" unless $_.to_i > 10'
+        if: ${{ contains(matrix.configure, 'jit=dev') }}
+
+      # Check that the binary was built with ZJIT
+      - name: Check ZJIT enabled
+        run: ./miniruby --zjit -v | grep "+ZJIT"
+        if: ${{ matrix.configure != '--disable-zjit' }}
+
+      - name: Set ENV for ZJIT
+        run: |
+          echo "RUBY_CRASH_REPORT=$(pwd)/rb_crash_%p.txt" >> $GITHUB_ENV
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          set -x
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
+            RUN_OPTS="$RUN_OPTS" MSPECOPT=--debug SPECOPTS="$SPECOPTS" \
+            TESTOPTS="$TESTOPTS" \
+            ZJIT_BINDGEN_DIFF_OPTS="$ZJIT_BINDGEN_DIFF_OPTS"
+        timeout-minutes: 90
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          EXCLUDES: '../src/test/.excludes-zjit'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          SYNTAX_SUGGEST_TIMEOUT: '5'
+          ZJIT_BINDGEN_DIFF_OPTS: '--exit-code'
+          CLANG_PATH: ${{ matrix.clang_path }}
+        continue-on-error: ${{ matrix.continue-on-test_task || false }}
+
+      - name: Dump crash logs
+        if: ${{ failure() }}
+        continue-on-error: true
+        run: |
+          tail --verbose --lines=+1 rb_crash_*.txt
+          exit 1
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: ubuntu-22.04
+    needs: [make]
+    steps:
+      - name: ${{ github.workflow }} jobs have failed
+        run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+  # Separated from `make` job to avoid making it a required status check for now
+  ruby-bench:
+    strategy:
+      matrix:
+        include:
+          # Test --call-threshold=2 with 2 iterations in total
+          - ruby_opts: '--zjit-call-threshold=2'
+            bench_opts: '--warmup=1 --bench=1 --excludes=lobsters'
+            configure: '--enable-zjit=dev_nodebug' # --enable-zjit=dev is too slow
+
+    runs-on: ubuntu-24.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --prefix="$(pwd)/install" ${{ matrix.configure }}
+
+      - run: make install
+
+      - name: Checkout ruby-bench
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          repository: ruby/ruby-bench
+          path: ruby-bench
+
+      # If you want to skip failing benchmark, consider using `--excludes`.
+      # e.g. `bench_opts: '--warmup=1 --bench=1 --excludes=railsbench,lobsters'`
+      - name: Run ruby-bench
+        run: ruby run_benchmarks.rb -e "zjit::../build/install/bin/ruby ${{ matrix.ruby_opts }}" ${{ matrix.bench_opts }}
+        working-directory: ruby-bench
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ruby-bench ${{ matrix.bench_opts }} ${{ matrix.ruby_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.gitignore b/.gitignore
index 4bbf24f094..6cf5fb5f32 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,17 +14,20 @@
 *.inc
 *.log
 *.o
+*.o.tmp
 *.obj
 *.old
 *.orig
 *.pch
 *.pdb
 *.rbinc
+*.rbbin
 *.rej
 *.s
 *.sav
 *.sl
 *.so
+*.so.*
 *.swp
 *.yarb
 *~
@@ -48,6 +51,7 @@ y.tab.c
 *.gcno
 *.gcov
 *.vscode
+!misc/.vscode
 lcov*.info
 
 # /
@@ -121,6 +125,7 @@ lcov*.info
 /repack
 /revision.h
 /revision.tmp
+/ripper.tmp.y
 /riscos
 /rubicon
 /ruby
@@ -134,17 +139,19 @@ lcov*.info
 /test.rb
 /test-coverage.dat
 /tmp
+/vcpkg_installed
 /transdb.h
 /uncommon.mk
 /verconf.h
 /verconf.mk
 /web
-/yasmdata.rb
 
 # /bin/
 
 /bin/*.exe
 /bin/*.dll
+/bin/goruby
+/bin/ruby
 
 # /benchmark/
 /benchmark/bm_require.data
@@ -160,6 +167,7 @@ lcov*.info
 
 # /coroutine/
 !/coroutine/**/*.s
+!/coroutine/**/*.S
 
 # /enc/trans/
 /enc/trans/*.c
@@ -199,8 +207,10 @@ lcov*.info
 
 # /ext/ripper/
 /ext/ripper/eventids1.c
+/ext/ripper/eventids1.h
 /ext/ripper/.eventids2-check
 /ext/ripper/eventids2table.c
+/ext/ripper/ripper_init.c
 /ext/ripper/ripper.*
 /ext/ripper/ids1
 /ext/ripper/ids2
@@ -222,7 +232,7 @@ lcov*.info
 # /misc/
 /misc/**/__pycache__
 
-# /spec/bundler
+# for `make test-bundler`
 /.rspec_status
 
 # /tool/
@@ -232,14 +242,39 @@ lcov*.info
 # /win32/
 /win32/*.ico
 
-# MJIT
-/include/ruby-*/*/rb_mjit_min_header-*.h
-/lib/mjit/instruction.rb
-/mjit_config.h
-/rb_mjit_header.h
 
 # YJIT
 /yjit-bench
+/yjit_exit_locations.dump
+
+# Rust
+/target
 
 # /wasm/
 /wasm/tests/*.wasm
+
+# prism
+/lib/prism/compiler.rb
+/lib/prism/dispatcher.rb
+/lib/prism/dot_visitor.rb
+/lib/prism/dsl.rb
+/lib/prism/inspect_visitor.rb
+/lib/prism/mutation_compiler.rb
+/lib/prism/node.rb
+/lib/prism/reflection.rb
+/lib/prism/serialize.rb
+/lib/prism/visitor.rb
+/prism/api_node.c
+/prism/ast.h
+/prism/diagnostic.c
+/prism/diagnostic.h
+/prism/node.c
+/prism/prettyprint.c
+/prism/serialize.c
+/prism/token_type.c
+/prism/srcs.mk
+
+# tool/update-NEWS-gemlist.rb
+/bundled_gems.json
+/default_gems.json
+/gems/default_gems
diff --git a/.mailmap b/.mailmap
new file mode 100644
index 0000000000..213a0f4916
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1,431 @@
+git[bot]                                <svn-admin@ruby-lang.org>
+git[bot]                                <svn-admin@ruby-lang.org> git <svn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+svn[bot]                                <svn-admin@ruby-lang.org> svn <svn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# a_matsuda
+Akira Matsuda                           <ronnie@dio.jp>
+Akira Matsuda                           <ronnie@dio.jp> <a_matsuda@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# aamine
+Minero Aoki                             <aamine@loveruby.net>
+Minero Aoki                             <aamine@loveruby.net> <aamine@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# akira
+akira yamada                            <akira@ruby-lang.org>
+## akira yamada                         <akira@ruby-lang.org> <akira@rice.p.arika.org>
+akira yamada                            <akira@ruby-lang.org> <akira@arika.org>
+akira yamada                            <akira@ruby-lang.org> <akira@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# akiyoshi
+AKIYOSHI, Masamichi                     <masamichi.akiyoshi@hp.com>
+AKIYOSHI, Masamichi                     <masamichi.akiyoshi@hp.com> <akiyoshi@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# akr
+Tanaka Akira                            <akr@fsij.org>
+Tanaka Akira                            <akr@fsij.org> <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# arai
+Koji Arai                               <jca02266@nifty.ne.jp>
+Koji Arai                               <jca02266@nifty.ne.jp> <arai@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# arton
+Akio Tajima                             <artonx@yahoo.co.jp>
+Akio Tajima                             <artonx@yahoo.co.jp> <arton@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# aycabta
+aycabta                                 <aycabta@gmail.com>
+aycabta                                 <aycabta@gmail.com> <aycabta@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ayumin
+Ayumu AIZAWA                            <ayumu.aizawa@gmail.com>
+Ayumu AIZAWA                            <ayumu.aizawa@gmail.com> <ayumin@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# azav
+Alexander Zavorine                      <alexandre.zavorine@nokia.com>
+Alexander Zavorine                      <alexandre.zavorine@nokia.com> <azav@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# charliesome
+Charlie Somerville                      <charliesome@ruby-lang.org>
+Charlie Somerville                      <charliesome@ruby-lang.org> <charliesome@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# dave
+Dave Thomas                             <dave@pragprog.com>
+Dave Thomas                             <dave@pragprog.com> <dave@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# davidflanagan
+David Flanagan                          <davidflanagan@ruby-lang.org>
+David Flanagan                          <davidflanagan@ruby-lang.org> <david@think32>
+David Flanagan                          <davidflanagan@ruby-lang.org> <david@davidflanagan.com>
+David Flanagan                          <davidflanagan@ruby-lang.org> <davidflanagan@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# dblack
+David A. Black                          <dblack@rubypal.com>
+David A. Black                          <dblack@rubypal.com> <dblack@wobblini.net>
+David A. Black                          <dblack@rubypal.com> <dblack@superlink.net>
+David A. Black                          <dblack@rubypal.com> <dblack@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# drbrain
+Eric Hodel                              <drbrain@segment7.net>
+Eric Hodel                              <drbrain@segment7.net> <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# duerst
+Martin Dürst                            <duerst@it.aoyama.ac.jp>
+Martin Dürst                            <duerst@it.aoyama.ac.jp> <duerst@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# eban
+WATANABE Hirofumi                       <eban@ruby-lang.org>
+WATANABE Hirofumi                       <eban@ruby-lang.org> <eban@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# emboss
+Martin Bosslet                          <Martin.Bosslet@gmail.com>
+Martin Bosslet                          <Martin.Bosslet@gmail.com> <Martin.Bosslet@googlemail.com>
+Martin Bosslet                          <Martin.Bosslet@gmail.com> <emboss@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# eregon
+Benoit Daloze                           <eregontp@gmail.com>
+Benoit Daloze                           <eregontp@gmail.com> <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# evan
+Evan Phoenix                            <evan@ruby-lang.org>
+Evan Phoenix                            <evan@ruby-lang.org> <evan@fallingsnow.net>
+Evan Phoenix                            <evan@ruby-lang.org> <evan@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# glass
+Masaki Matsushita                       <glass.saga@gmail.com>
+Masaki Matsushita                       <glass.saga@gmail.com> <glass@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# gogotanaka
+Kazuki Tanaka                           <gogotanaka@ruby-lang.org>
+Kazuki Tanaka                           <gogotanaka@ruby-lang.org> <gogotanaka@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# gotoken
+Kentaro Goto                            <gotoken@gmail.com>
+Kentaro Goto                            <gotoken@gmail.com> <gotoken@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# gotoyuzo
+GOTOU Yuuzou                            <gotoyuzo@notwork.org>
+GOTOU Yuuzou                            <gotoyuzo@notwork.org> <gotoyuzo@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# gsinclair
+Gavin Sinclair                          <gsinclair@soyabean.com.au>
+Gavin Sinclair                          <gsinclair@soyabean.com.au> <gsinclair@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# H_Konishi
+KONISHI Hiromasa                        <konishih@fd6.so-net.ne.jp>
+KONISHI Hiromasa                        <konishih@fd6.so-net.ne.jp> <H_Konishi@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# headius
+Charles Oliver Nutter                   <headius@headius.com>
+Charles Oliver Nutter                   <headius@headius.com> <headius@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# hone
+Terence Lee                             <hone@heroku.com>
+Terence Lee                             <hone@heroku.com> <hone@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# hsbt
+Hiroshi SHIBATA                         <hsbt@ruby-lang.org>
+Hiroshi SHIBATA                         <hsbt@ruby-lang.org> <hsbt@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# iwamatsu
+Nobuhiro Iwamatsu                       <iwamatsu@nigauri.org>
+Nobuhiro Iwamatsu                       <iwamatsu@nigauri.org> <iwamatsu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# jeg2
+James Edward Gray II                    <james@graysoftinc.com>
+James Edward Gray II                    <james@graysoftinc.com> <jeg2@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# jim
+Jim Weirich                             <jim@tardis.local>
+Jim Weirich                             <jim@tardis.local> <jim@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# k0kubun
+Takashi Kokubun                         <takashikkbn@gmail.com>
+Takashi Kokubun                         <takashikkbn@gmail.com> <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kanemoto
+Yutaka Kanemoto                         <kanemoto@ruby-lang.org>
+Yutaka Kanemoto                         <kanemoto@ruby-lang.org> <kanemoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# katsu
+UENO Katsuhiro                          <katsu@blue.sky.or.jp>
+UENO Katsuhiro                          <katsu@blue.sky.or.jp> <katsu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kazu
+Kazuhiro NISHIYAMA                      <zn@mbf.nifty.com>
+Kazuhiro NISHIYAMA                      <zn@mbf.nifty.com> <kazu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# keiju
+Keiju Ishitsuka                         <keiju@ishitsuka.com>
+Keiju Ishitsuka                         <keiju@ishitsuka.com> <keiju@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# knu
+Akinori MUSHA                           <knu@iDaemons.org>
+Akinori MUSHA                           <knu@iDaemons.org> <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ko1
+Koichi Sasada                           <ko1@atdot.net>
+Koichi Sasada                           <ko1@atdot.net> <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kosaki
+KOSAKI Motohiro                         <kosaki.motohiro@gmail.com>
+KOSAKI Motohiro                         <kosaki.motohiro@gmail.com> <kosaki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kosako
+K.Kosako                                <sndgk393@ybb.ne.jp>
+K.Kosako                                <sndgk393@ybb.ne.jp> <kosako@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kou
+Sutou Kouhei                            <kou@clear-code.com>
+Sutou Kouhei                            <kou@clear-code.com> <kou@cozmixng.org>
+Sutou Kouhei                            <kou@clear-code.com> <kou@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kouji
+Kouji Takao                             <kouji.takao@gmail.com>
+Kouji Takao                             <kouji.takao@gmail.com> <kouji@takao7.net>
+Kouji Takao                             <kouji.takao@gmail.com> <kouji@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ksaito
+Kazuo Saito                             <ksaito@uranus.dti.ne.jp>
+Kazuo Saito                             <ksaito@uranus.dti.ne.jp> <ksaito@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ktsj
+Kazuki Tsujimoto                        <kazuki@callcc.net>
+Kazuki Tsujimoto                        <kazuki@callcc.net> <ktsj@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# luislavena
+Luis Lavena                             <luislavena@gmail.com>
+Luis Lavena                             <luislavena@gmail.com> <luislavena@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# mame
+Yusuke Endoh                            <mame@ruby-lang.org>
+## Yusuke Endoh                         <mame@ruby-lang.org> <mame@tsg.ne.jp>
+Yusuke Endoh                            <mame@ruby-lang.org> <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# marcandre
+Marc-Andre Lafortune                    <github@marc-andre.ca>
+Marc-Andre Lafortune                    <ruby-core@marc-andre.ca>
+Marc-Andre Lafortune                    <ruby-core@marc-andre.ca> <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# matz
+Yukihiro "Matz" Matsumoto               <matz@ruby.or.jp>
+Yukihiro "Matz" Matsumoto               <matz@ruby.or.jp> <matz@ruby-lang.org>
+Yukihiro "Matz" Matsumoto               <matz@ruby.or.jp> <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# michal
+Michal Rokos                            <michal@ruby-lang.org>
+Michal Rokos                            <michal@ruby-lang.org> <michal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# mneumann
+Michael Neumann                         <mneumann@ruby-lang.org>
+Michael Neumann                         <mneumann@ruby-lang.org> <mneumann@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# mrkn
+Kenta Murata                            <mrkn@mrkn.jp>
+Kenta Murata                            <mrkn@mrkn.jp> <muraken@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+Kenta Murata                            <mrkn@mrkn.jp> <3959+mrkn@users.noreply.github.com>
+Kenta Murata                            <mrkn@mrkn.jp> <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nagachika
+nagachika                               <nagachika@ruby-lang.org>
+nagachika                               <nagachika@ruby-lang.org> <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nagai
+Hidetoshi NAGAI                         <nagai@ai.kyutech.ac.jp>
+Hidetoshi NAGAI                         <nagai@ai.kyutech.ac.jp> <nagai@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nahi
+Hiroshi Nakamura                        <nahi@ruby-lang.org>
+Hiroshi Nakamura                        <nahi@ruby-lang.org> <nahi@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nari
+Narihiro Nakamura                       <authornari@gmail.com>
+Narihiro Nakamura                       <authornari@gmail.com> <nari@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# naruse
+NARUSE, Yui                             <naruse@airemix.jp>
+NARUSE, Yui                             <naruse@airemix.jp> <naruse@ruby-lang.org>
+NARUSE, Yui                             <naruse@airemix.jp> <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ngoto
+Naohisa Goto                            <ngotogenome@gmail.com>
+Naohisa Goto                            <ngotogenome@gmail.com> <ngoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nobu
+Nobuyoshi Nakada                        <nobu@ruby-lang.org>
+Nobuyoshi Nakada                        <nobu@ruby-lang.org> <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# normal
+Eric Wong                               <normal@ruby-lang.org>
+Eric Wong                               <normal@ruby-lang.org> <e@80x24.org>
+Eric Wong                               <normal@ruby-lang.org> <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ntalbott
+Nathaniel Talbott                       <ntalbott@ruby-lang.org>
+Nathaniel Talbott                       <ntalbott@ruby-lang.org> <ntalbott@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ocean
+Hirokazu Yamamoto                       <ocean@m2.ccsnet.ne.jp>
+Hirokazu Yamamoto                       <ocean@m2.ccsnet.ne.jp> <ocean@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# odaira
+Rei Odaira                              <rodaira@us.ibm.com>
+Rei Odaira                              <rodaira@us.ibm.com> <Rei.Odaira@gmail.com>
+Rei Odaira                              <rodaira@us.ibm.com> <odaira@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# okkez
+okkez                                   <okkez000@gmail.com>
+okkez                                   <okkez000@gmail.com> <okkez@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# rhe
+Kazuki Yamaguchi                        <k@rhe.jp>
+Kazuki Yamaguchi                        <k@rhe.jp> <rhe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ryan
+Ryan Davis                              <ryand-github@zenspider.com>
+Ryan Davis                              <ryand-github@zenspider.com> <ryand-ruby@zenspider.com>
+Ryan Davis                              <ryand-github@zenspider.com> <ryan@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# samuel
+Samuel Williams                         <samuel.williams@oriontransfer.co.nz>
+Samuel Williams                         <samuel.williams@oriontransfer.co.nz> <samuel@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# seki
+Masatoshi SEKI                          <m_seki@mva.biglobe.ne.jp>
+Masatoshi SEKI                          <m_seki@mva.biglobe.ne.jp> <seki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ser
+Sean Russell                            <ser@germane-software.com>
+Sean Russell                            <ser@germane-software.com> <ser@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# shigek
+Shigeo Kobayashi                        <shigek@ruby-lang.org>
+Shigeo Kobayashi                        <shigek@ruby-lang.org> <shigek@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# shirosaki
+Hiroshi Shirosaki                       <h.shirosaki@gmail.com>
+Hiroshi Shirosaki                       <h.shirosaki@gmail.com> <shirosaki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# sho-h
+Sho Hashimoto                           <sho-h@ruby-lang.org>
+Sho Hashimoto                           <sho-h@ruby-lang.org> <sho-h@netlab.jp>
+Sho Hashimoto                           <sho-h@ruby-lang.org> <sho.hsmt@gmail.com>
+Sho Hashimoto                           <sho-h@ruby-lang.org> <sho-h@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# shugo
+Shugo Maeda                             <shugo@ruby-lang.org>
+Shugo Maeda                             <shugo@ruby-lang.org> <shugo@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# shyouhei
+卜部昌平                                    <shyouhei@ruby-lang.org>
+卜部昌平                                    <shyouhei@ruby-lang.org> <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# siena
+Siena.                                  <siena@faculty.chiba-u.jp>
+Siena.                                  <siena@faculty.chiba-u.jp> <siena@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# sonots
+sonots                                  <sonots@gmail.com>
+sonots                                  <sonots@gmail.com> <sonots@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# sorah
+Sorah Fukumori                          <her@sorah.jp>
+Sorah Fukumori                          <her@sorah.jp> <sorah@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# stomar
+Marcus Stollsteimer                     <sto.mar@web.de>
+Marcus Stollsteimer                     <sto.mar@web.de> <stomar@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# suke
+Masaki Suketa                           <masaki.suketa@nifty.ne.jp>
+Masaki Suketa                           <masaki.suketa@nifty.ne.jp> <suke@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tadd
+Tadashi Saito                           <tad.a.digger@gmail.com>
+Tadashi Saito                           <tad.a.digger@gmail.com> <tadd@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tadf
+Tadayoshi Funaba                        <tadf@dotrb.org>
+Tadayoshi Funaba                        <tadf@dotrb.org> <tadf@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# takano32
+TAKANO Mitsuhiro                        <takano32@gmail.com>
+TAKANO Mitsuhiro                        <takano32@gmail.com> <takano32@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tarui
+Masaya Tarui                            <tarui@ruby-lang.org>
+Masaya Tarui                            <tarui@ruby-lang.org> <tarui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# technorama
+Technorama Ltd.                         <oss-ruby@technorama.net>
+Technorama Ltd.                         <oss-ruby@technorama.net> <technorama@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tenderlove
+Aaron Patterson                         <tenderlove@ruby-lang.org>
+Aaron Patterson                         <tenderlove@ruby-lang.org> <tenderlove@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tmm1
+Aman Gupta                              <ruby@tmm1.net>
+Aman Gupta                              <ruby@tmm1.net> <tmm1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ts
+Guy Decoux                              <ts@moulon.inra.fr>
+Guy Decoux                              <ts@moulon.inra.fr> <ts@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ttate
+Takaaki Tateishi                        <ttate@ttsky.net>
+## Takaaki Tateishi                     <ttate@ttsky.net> <ttate@kt.jaist.ac.jp>
+Takaaki Tateishi                        <ttate@ttsky.net> <ttate@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# uema2
+Takaaki Uematsu                         <uema2x@jcom.home.ne.jp>
+Takaaki Uematsu                         <uema2x@jcom.home.ne.jp> <uema2@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# usa
+U.Nakamura                              <usa@ruby-lang.org>
+U.Nakamura                              <usa@ruby-lang.org> <usa@garbagecollect.jp>
+U.Nakamura                              <usa@ruby-lang.org> <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# wakou
+Wakou Aoyama                            <wakou@ruby-lang.org>
+Wakou Aoyama                            <wakou@ruby-lang.org> <wakou@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# wanabe
+wanabe                                  <s.wanabe@gmail.com>
+wanabe                                  <s.wanabe@gmail.com> <wanabe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# watson1978
+Watson                                  <watson1978@gmail.com>
+Watson                                  <watson1978@gmail.com> <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# wew
+William Webber                          <william@williamwebber.com>
+William Webber                          <william@williamwebber.com> <wew@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# why
+why the lucky stiff                     <why@ruby-lang.org>
+why the lucky stiff                     <why@ruby-lang.org> <why@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# xibbar
+Takeyuki FUJIOKA                        <xibbar@ruby-lang.org>
+Takeyuki FUJIOKA                        <xibbar@ruby-lang.org> <xibbar@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# yugui
+Yuki Yugui Sonoda                       <yugui@yugui.jp>
+Yuki Yugui Sonoda                       <yugui@yugui.jp> <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# yui-knk
+yui-knk                                 <spiketeika@gmail.com>
+yui-knk                                 <spiketeika@gmail.com> <yui-knk@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# yuki
+Yuki Nishijima                          <yuki24@hey.com>
+Yuki Nishijima                          <yuki24@hey.com> <mail@yukinishijima.net>
+Yuki Nishijima                          <yuki24@hey.com> <yuki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# zsombor
+Dee Zsombor                             <zsombor@ruby-lang.org>
+Dee Zsombor                             <zsombor@ruby-lang.org> <zsombor@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# zzak
+zzak                                    <zzakscott@gmail.com>
+zzak                                    <zzakscott@gmail.com> <zzak@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
diff --git a/.rdoc_options b/.rdoc_options
index 760507c7a2..89265cafd4 100644
--- a/.rdoc_options
+++ b/.rdoc_options
@@ -1,4 +1,39 @@
 ---
 page_dir: doc
-main_page: README.md
+charset: UTF-8
+encoding: UTF-8
+main_page: index.md
 title: Documentation for Ruby development version
+visibility: :private
+rdoc_include:
+- doc
+
+exclude:
+- \.gemspec\z
+- lib/set/subclass_compatible.rb
+
+autolink_excluded_words:
+- Box
+- Class
+- Method
+- Module
+- Process
+- RDoc
+- Ruby
+- Set
+- ZJIT
+- YJIT
+
+canonical_root: https://docs.ruby-lang.org/en/master
+
+footer_content:
+  Ruby:
+    Documentation: index.html
+    Official Website: https://www.ruby-lang.org/
+    Playground: https://ruby.github.io/play-ruby/
+  Resources:
+    GitHub: https://github.com/ruby/ruby
+    Issue Tracker: https://bugs.ruby-lang.org/projects/ruby-master/issues
+    RubyGems: https://rubygems.org/
+  Community:
+    X: https://x.com/rubylangorg
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 665feba914..0000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,235 +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.
-
-# We only manage non-amd64 free pipelines.
-# https://docs.travis-ci.com/user/billing-overview/
-
-language: c
-
-os: linux
-
-if: commit_message !~ /\[DOC\]/
-
-dist: focal
-
-git:
-  quiet: true
-
-cache:
-  ccache: true
-  directories:
-    - $HOME/config_2nd
-    - $HOME/.downloaded-cache
-
-env:
-  global:
-    # The tests skipped in `make test-all`.
-    - TEST_ALL_SKIPPED_TESTS=
-    # The tests executed separately by `make test-all`.
-    - TEST_ALL_SEPARATED_TESTS=
-    # Reset timestamps early
-    - _=$(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'
-    # 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 $travis_apt_get_options"
-    # -O1 is faster than -O3 in our tests.
-    - optflags=-O1
-    # -g0 disables backtraces when SEGV.  Do not set that.
-    - debugflags=-ggdb3
-
-.org.ruby-lang.ci.matrix-definitions:
-
-  - &gcc-10
-    compiler: gcc-10
-    before_install:
-      - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
-      - >-
-        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
-        ccache
-        gcc-10
-        g++-10
-        libffi-dev
-        libncurses-dev
-        libncursesw5-dev
-        libreadline-dev
-        libssl-dev
-        libyaml-dev
-        openssl
-        zlib1g-dev
-
-  # --------
-
-  - &arm64-linux
-    name: arm64-linux
-    arch: arm64
-    <<: *gcc-10
-
-  - &ppc64le-linux
-    name: ppc64le-linux
-    arch: ppc64le
-    <<: *gcc-10
-
-  - &s390x-linux
-    name: s390x-linux
-    arch: s390x
-    <<: *gcc-10
-
-  - &arm32-linux
-    name: arm32-linux
-    arch: arm64
-    # https://packages.ubuntu.com/focal/crossbuild-essential-armhf
-    compiler: arm-linux-gnueabihf-gcc
-    env:
-      - SETARCH='setarch linux32 --verbose --32bit'
-      # The "TestReadline#test_interrupt_in_other_thread" started failing on arm32
-      # from https://www.travis-ci.com/github/ruby/ruby/jobs/529005145
-      - TEST_ALL_SKIPPED_TESTS=test_interrupt_in_other_thread
-    before_install:
-      - sudo dpkg --add-architecture armhf
-      - tool/travis_retry.sh sudo bash -c "rm -rf '${TRAVIS_ROOT}/var/lib/apt/lists/'* && exec apt-get update -yq"
-      - >-
-        tool/travis_retry.sh sudo -E apt-get $travis_apt_get_options install
-        ccache
-        crossbuild-essential-armhf
-        libc6:armhf
-        libstdc++-10-dev:armhf
-        libffi-dev:armhf
-        libncurses-dev:armhf
-        libncursesw5-dev:armhf
-        libreadline-dev:armhf
-        libssl-dev:armhf
-        libyaml-dev:armhf
-        linux-libc-dev:armhf
-        zlib1g-dev:armhf
-
-matrix:
-  include:
-    # Build every commit (Allowed Failures):
-    - <<: *arm32-linux
-    # Comment out as the 2nd arm64 pipeline is unstable.
-    # - <<: *arm64-linux
-    - <<: *ppc64le-linux
-    - <<: *s390x-linux
-  allow_failures:
-    # We see multiple errors indicating errors on the Travis environment itself in a short while:
-    # https://app.travis-ci.com/github/ruby/ruby/jobs/544382885
-    # https://app.travis-ci.com/github/ruby/ruby/jobs/544361370
-    # It's not a fault of Ruby's arm32 support but just Travis arm32 seems unsable.
-    - name: arm32-linux
-    # - name: arm64-linux
-    # We see "Some worker was crashed." in about 40% of recent ppc64le-linux jobs
-    # e.g. https://app.travis-ci.com/github/ruby/ruby/jobs/530959548
-    - name: ppc64le-linux
-    # Tentatively disable, because often hungs up **after** all tests
-    # have finished successfully and saving caches.
-    - name: s390x-linux
-  fast_finish: true
-
-before_script:
-  - . tool/ci_functions.sh
-  - |-
-    if [ -n "${TEST_ALL_SKIPPED_TESTS}" ]; then
-      TEST_ALL_OPTS="${TEST_ALL_OPTS} $(ci_to_excluded_test_opts "${TEST_ALL_SKIPPED_TESTS}")"
-      if [ -z "${TEST_ALL_SEPARATED_TESTS}" ]; then
-        TEST_ALL_SEPARATED_TESTS="${TEST_ALL_SKIPPED_TESTS}"
-      fi
-    fi
-  - |-
-    if [ -n "${TEST_ALL_SEPARATED_TESTS}" ]; then
-      TEST_ALL_OPTS_SEPARATED="$(ci_to_included_test_opts "${TEST_ALL_SEPARATED_TESTS}")"
-    fi
-  - echo TEST_ALL_OPTS="${TEST_ALL_OPTS}" TEST_ALL_OPTS_SEPARATED="${TEST_ALL_OPTS_SEPARATED}"
-  - 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 -s $JOBS up
-  - make -s $JOBS srcs
-  - rm -f config.status Makefile rbconfig.rb .rbconfig.time
-  - |-
-    if [ -d ~/config_2nd ]; then
-      cp -pr ~/config_2nd build
-    else
-      mkdir build
-    fi
-  - mkdir config_1st config_2nd gems/src
-  - chmod -R a-w .
-  - chmod -R u+w build config_1st config_2nd gems/src
-  - cd build
-  - |-
-    case "$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}"
-  - ../tool/travis_wait.sh $SETARCH make -s test-all -o exts TESTOPTS="$JOBS -q --tty=no ${TEST_ALL_OPTS}" RUBYOPT="-w"
-  # Run the failing tests separately returning ok status to check if it works,
-  # visualize them.
-  - |
-    if [ -n "${TEST_ALL_OPTS_SEPARATED}" ]; then
-      $SETARCH make -s test-all -o exts TESTOPTS="$JOBS -v --tty=no ${TEST_ALL_OPTS_SEPARATED}" RUBYOPT="-w" || :
-    fi
-  - $SETARCH make -s test-spec MSPECOPT=-ff # not using `-j` because sometimes `mspec -j` silently dies
-  - $SETARCH make -s -o showflags leaked-globals
-
-# We enable Travis on the specific branches or forked repositories here.
-if: (repo = ruby/ruby AND (branch = master OR branch =~ /^ruby_\d_\d$/)) OR repo != ruby/ruby
-
-# 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:
-    - jaruga@ruby-lang.org
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 13df6087ca..35e79dd3b9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1 +1 @@
-See ["Contributing to Ruby"](https://docs.ruby-lang.org/en/master/contributing_md.html), which includes setup and build instructions.
+See ["Contributing to Ruby"](https://docs.ruby-lang.org/en/master/contributing/contributing_md.html), which includes setup and build instructions.
diff --git a/COPYING b/COPYING
index 48e5a96de7..428ce03ed7 100644
--- a/COPYING
+++ b/COPYING
@@ -1,3 +1,5 @@
+{日本語}[rdoc-ref:COPYING.ja]
+
 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:
diff --git a/COPYING.ja b/COPYING.ja
index 230376bc60..5de2dbcc8f 100644
--- a/COPYING.ja
+++ b/COPYING.ja
@@ -1,3 +1,5 @@
+{English}[rdoc-ref:COPYING]
+
 本プログラムはフリーソフトウェアです．2-clause BSDL
 または以下に示す条件で本プログラムを再配布できます
 2-clause BSDLについてはBSDLファイルを参照して下さい．
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000000..9a4b2ebbba
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,193 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "capstone"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "015ef5d5ca1743e3f94af9509ba6bd2886523cfee46e48d15c2ef5216fd4ac9a"
+dependencies = [
+ "capstone-sys",
+ "libc",
+]
+
+[[package]]
+name = "capstone-sys"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2267cb8d16a1e4197863ec4284ffd1aec26fe7e57c58af46b02590a0235809a0"
+dependencies = [
+ "cc",
+ "libc",
+]
+
+[[package]]
+name = "cc"
+version = "1.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "525046617d8376e3db1deffb079e91cef90a89fc3ca5c185bbf8c9ecdd15cd5c"
+dependencies = [
+ "shlex",
+]
+
+[[package]]
+name = "console"
+version = "0.15.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e1f83fc076bd6dd27517eacdf25fef6c4dfe5f1d7448bafaaf3a26f13b5e4eb"
+dependencies = [
+ "encode_unicode",
+ "lazy_static",
+ "libc",
+ "windows-sys",
+]
+
+[[package]]
+name = "encode_unicode"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a357d28ed41a50f9c765dbfe56cbc04a64e53e5fc58ba79fbc34c10ef3df831f"
+
+[[package]]
+name = "insta"
+version = "1.43.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "154934ea70c58054b556dd430b99a98c2a7ff5309ac9891597e339b5c28f4371"
+dependencies = [
+ "console",
+ "once_cell",
+ "similar",
+]
+
+[[package]]
+name = "jit"
+version = "0.1.0"
+
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
+[[package]]
+name = "libc"
+version = "0.2.171"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c19937216e9d3aa9956d9bb8dfc0b0c8beb6058fc4f7a4dc4d850edf86a237d6"
+
+[[package]]
+name = "once_cell"
+version = "1.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
+
+[[package]]
+name = "ruby"
+version = "0.0.0"
+dependencies = [
+ "yjit",
+ "zjit",
+]
+
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
+[[package]]
+name = "similar"
+version = "2.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32fea41aca09ee824cc9724996433064c89f7777e60762749a4170a14abbfa21"
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "yjit"
+version = "0.1.0"
+dependencies = [
+ "capstone",
+ "jit",
+]
+
+[[package]]
+name = "zjit"
+version = "0.0.1"
+dependencies = [
+ "capstone",
+ "insta",
+ "jit",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000000..521129d92d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,60 @@
+# This is the root Cargo [workspace](https://doc.rust-lang.org/cargo/reference/workspaces.html)
+# and the root package for all the rust code that are statically linked into ruby. Rust tooling
+# limitations means all Rust code need to share a single archive library (staticlib) at the
+# integration point with non-rust code. (See rustlang/rust#44322 and #104707 for a taste of
+# the linking challenges.)
+#
+# Do not add required dependencies. This is a policy that helps downstream consumers and give
+# us tight control over what we ship. All of the optional dependencies are used exclusively
+# during development.
+#
+# Release builds avoid Cargo entirely because offline builds can fail even when none of the
+# optional dependencies are built (rust-lang/cargo#10352).
+
+[workspace]
+members = ["zjit", "yjit", "jit"]
+
+[package]
+name = "ruby"
+version = "0.0.0"
+edition = "2024"
+rust-version = "1.85.0"
+publish = false # Don't publish to crates.io
+
+[dependencies]
+yjit = { path = "yjit", optional = true }
+zjit = { path = "zjit", optional = true }
+
+[lib]
+crate-type = ["staticlib"]
+path = "ruby.rs"
+
+[features]
+disasm = ["yjit?/disasm", "zjit?/disasm"]
+runtime_checks = ["yjit?/runtime_checks", "zjit?/runtime_checks"]
+yjit = [ "dep:yjit" ]
+zjit = [ "dep:zjit" ]
+
+[profile.dev]
+opt-level = 0
+debug = true
+debug-assertions = true
+overflow-checks = true
+
+[profile.dev_nodebug]
+inherits = "dev"
+
+[profile.stats]
+inherits = "release"
+
+[profile.release]
+# NOTE: --enable-yjit and zjit builds use `rustc` without going through Cargo. You
+# might want to update the `rustc` invocation if you change this profile.
+opt-level = 3
+# The extra robustness that comes from checking for arithmetic overflow is
+# worth the performance cost for the compiler.
+overflow-checks = true
+# Generate debug info
+debug = true
+# Use ThinLTO. Much smaller output for a small amount of build time increase.
+lto = "thin"
diff --git a/LEGAL b/LEGAL
index 9645728efe..2777aa2c14 100644
--- a/LEGAL
+++ b/LEGAL
@@ -58,12 +58,12 @@ mentioned below.
 
 [ccan/list/list.h]
 
-  This file is licensed under the {MIT License}[rdoc-label:label-MIT+License].
+  This file is licensed under the {MIT License}[rdoc-ref:@MIT+License].
 
 [coroutine]
 
   Unless otherwise specified, these files are licensed under the
-  {MIT License}[rdoc-label:label-MIT+License].
+  {MIT License}[rdoc-ref:@MIT+License].
 
 [include/ruby/onigmo.h]
 [include/ruby/oniguruma.h]
@@ -546,7 +546,7 @@ mentioned below.
 
 [vsnprintf.c]
 
-  This file is under the {old-style BSD license}[rdoc-label:label-Old-style+BSD+license].
+  This file is under the {old-style BSD license}[rdoc-ref:@Old-style+BSD+license].
 
   >>>
     Copyright (c) 1990, 1993::
@@ -577,7 +577,7 @@ mentioned below.
 
 [missing/crypt.c]
 
-  This file is under the {old-style BSD license}[rdoc-label:label-Old-style+BSD+license].
+  This file is under the {old-style BSD license}[rdoc-ref:@Old-style+BSD+license].
 
   >>>
     Copyright (c) 1989, 1993::
@@ -588,7 +588,7 @@ mentioned below.
 
 [missing/setproctitle.c]
 
-  This file is under the {old-style BSD license}[rdoc-label:label-Old-style+BSD+license].
+  This file is under the {old-style BSD license}[rdoc-ref:@Old-style+BSD+license].
 
   >>>
     Copyright 2003:: Damien Miller
@@ -702,54 +702,27 @@ mentioned below.
     OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     SUCH DAMAGE.
 
-[ext/json/generator/generator.c]
+[ext/json/vendor/fpconv.c]
 
-  The file contains the following copyright notice.
+  This file is under the {Boost Software License}[rdoc-ref:@Boost+Software+License+1.0].
 
-  >>>
-    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.
+[ext/json/vendor/jeaiii-ltoa.h]
 
   >>>
-    Copyright (C) 1987:: Fujitsu LTD. (Itaru ICHIKAWA)
+    Copyright (c) 2024,2025 Enrico Thierbach - https://github.com/radiospiel
+    Copyright (c) 2022 James Edward Anhalt III - https://github.com/jeaiii/itoa
+
+    {MIT License}[rdoc-ref:@MIT+License]
 
-    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/json/vendor/ryu.h]
+  This file is adapted from the Ryu algorithm by Ulf Adams https://github.com/ulfjack/ryu.
+  It is dual-licensed under {Apache License 2.0}[rdoc-ref:@Apache+License+2.0] OR
+  {Boost Software License 1.0}[rdoc-ref:@Boost+Software+License+1.0].
 
 [ext/psych]
 [test/psych]
 
-  The files under these directories are under the following license, except for
-  ext/psych/yaml.
+  The files under these directories are under the following license.
 
   >>>
     Copyright 2009:: Aaron Patterson, et al.
@@ -772,31 +745,6 @@ mentioned below.
     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]
 
   >>>
@@ -905,7 +853,7 @@ mentioned below.
   >>>
     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
+    either the terms of the {MIT license}[rdoc-ref:@MIT+License], or the conditions
     below:
 
     1. You may make and give away verbatim copies of the source form of the
@@ -967,7 +915,7 @@ mentioned below.
     Portions copyright (c) 2010:: Andre Arko
     Portions copyright (c) 2009:: Engine Yard
 
-    {MIT License}[rdoc-label:label-MIT+License]
+    {MIT License}[rdoc-ref:@MIT+License]
 
 [lib/bundler/vendor/thor]
 
@@ -976,17 +924,25 @@ mentioned below.
   >>>
     Copyright (c) 2008 Yehuda Katz, Eric Hodel, et al.
 
-    {MIT License}[rdoc-label:label-MIT+License]
+    {MIT License}[rdoc-ref:@MIT+License]
 
-[lib/rubygems/resolver/molinillo]
-[lib/bundler/vendor/molinillo]
+[lib/rubygems/vendor/molinillo]
 
   molinillo is under the following license.
 
   >>>
     Copyright (c) 2014 Samuel E. Giddins segiddins@segiddins.me
 
-    {MIT License}[rdoc-label:label-MIT+License]
+    {MIT License}[rdoc-ref:@MIT+License]
+
+[lib/bundler/vendor/pub_grub]
+
+  pub_grub is under the following license.
+
+  >>>
+    Copyright (c) 2018 John Hawthorn
+
+    {MIT License}[rdoc-ref:@MIT+License]
 
 [lib/bundler/vendor/connection_pool]
 
@@ -995,7 +951,7 @@ mentioned below.
   >>>
     Copyright (c) 2011 Mike Perham
 
-    {MIT License}[rdoc-label:label-MIT+License]
+    {MIT License}[rdoc-ref:@MIT+License]
 
 [lib/bundler/vendor/net-http-persistent]
 
@@ -1004,7 +960,7 @@ mentioned below.
   >>>
     Copyright (c) Eric Hodel, Aaron Patterson
 
-    {MIT License}[rdoc-label:label-MIT+License]
+    {MIT License}[rdoc-ref:@MIT+License]
 
 [lib/did_you_mean]
 [lib/did_you_mean.rb]
@@ -1015,7 +971,7 @@ mentioned below.
   >>>
     Copyright (c) 2014-2016 Yuki Nishijima
 
-    {MIT License}[rdoc-label:label-MIT+License]
+    {MIT License}[rdoc-ref:@MIT+License]
 
 [lib/error_highlight]
 [lib/error_highlight.rb]
@@ -1026,7 +982,7 @@ mentioned below.
   >>>
     Copyright (c) 2021 Yusuke Endoh
 
-    {MIT License}[rdoc-label:label-MIT+License]
+    {MIT License}[rdoc-ref:@MIT+License]
 
 [benchmark/so_ackermann.rb]
 [benchmark/so_array.rb]
@@ -1109,3 +1065,236 @@ mentioned below.
 
       From ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
       paragraph 3 above is now null and void.
+
+== Boost Software License 1.0
+
+>>>
+      Boost Software License - Version 1.0 - August 17th, 2003
+
+      Permission is hereby granted, free of charge, to any person or organization
+      obtaining a copy of the software and accompanying documentation covered by
+      this license (the "Software") to use, reproduce, display, distribute,
+      execute, and transmit the Software, and to prepare derivative works of the
+      Software, and to permit third-parties to whom the Software is furnished to
+      do so, all subject to the following:
+
+      The copyright notices in the Software and this entire statement, including
+      the above license grant, this restriction and the following disclaimer,
+      must be included in all copies of the Software, in whole or in part, and
+      all derivative works of the Software, unless such copies or derivative
+      works are solely in the form of machine-executable object code generated by
+      a source language processor.
+
+      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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+      SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+      FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+      ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+      DEALINGS IN THE SOFTWARE.
+
+== Apache License 2.0
+
+>>>
+      Apache License
+      Version 2.0, January 2004
+      http://www.apache.org/licenses/
+
+      TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+      1. Definitions.
+
+         "License" shall mean the terms and conditions for use, reproduction,
+         and distribution as defined by Sections 1 through 9 of this document.
+
+         "Licensor" shall mean the copyright owner or entity authorized by
+         the copyright owner that is granting the License.
+
+         "Legal Entity" shall mean the union of the acting entity and all
+         other entities that control, are controlled by, or are under common
+         control with that entity. For the purposes of this definition,
+         "control" means (i) the power, direct or indirect, to cause the
+         direction or management of such entity, whether by contract or
+         otherwise, or (ii) ownership of fifty percent (50%) or more of the
+         outstanding shares, or (iii) beneficial ownership of such entity.
+
+         "You" (or "Your") shall mean an individual or Legal Entity
+         exercising permissions granted by this License.
+
+         "Source" form shall mean the preferred form for making modifications,
+         including but not limited to software source code, documentation
+         source, and configuration files.
+
+         "Object" form shall mean any form resulting from mechanical
+         transformation or translation of a Source form, including but
+         not limited to compiled object code, generated documentation,
+         and conversions to other media types.
+
+         "Work" shall mean the work of authorship, whether in Source or
+         Object form, made available under the License, as indicated by a
+         copyright notice that is included in or attached to the work
+         (an example is provided in the Appendix below).
+
+         "Derivative Works" shall mean any work, whether in Source or Object
+         form, that is based on (or derived from) the Work and for which the
+         editorial revisions, annotations, elaborations, or other modifications
+         represent, as a whole, an original work of authorship. For the purposes
+         of this License, Derivative Works shall not include works that remain
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diff --git a/NEWS.md b/NEWS.md
index b4ecccc5c4..2b021e7cdd 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,418 +1,87 @@
-# NEWS for Ruby 3.2.0
+# NEWS for Ruby 4.1.0
 
 This document is a list of user-visible feature changes
-since the **3.1.0** release, except for bug fixes.
+since the **4.0.0** release, except for bug fixes.
 
 Note that each entry is kept to a minimum, see links for details.
 
 ## Language changes
 
-* Anonymous rest and keyword rest arguments can now be passed as
-  arguments, instead of just used in method parameters.
-  [[Feature #18351]]
-
-    ```ruby
-    def foo(*)
-      bar(*)
-    end
-    def baz(**)
-      quux(**)
-    end
-    ```
-
-* A proc that accepts a single positional argument and keywords will
-  no longer autosplat. [[Bug #18633]]
-
-  ```ruby
-  proc{|a, **k| a}.call([1, 2])
-  # Ruby 3.1 and before
-  # => 1
-  # Ruby 3.2 and after
-  # => [1, 2]
-  ```
-
-* Constant assignment evaluation order for constants set on explicit
-  objects has been made consistent with single attribute assignment
-  evaluation order. With this code:
-
-    ```ruby
-    foo::BAR = baz
-    ```
-
-  `foo` is now called before `baz`. Similarly, for multiple assignments
-  to constants,  left-to-right evaluation order is used. With this
-  code:
-
-    ```ruby
-      foo1::BAR1, foo2::BAR2 = baz1, baz2
-    ```
-
-  The following evaluation order is now used:
-
-  1. `foo1`
-  2. `foo2`
-  3. `baz1`
-  4. `baz2`
-
-  [[Bug #15928]]
-
-* Find pattern is no longer experimental.
-  [[Feature #18585]]
-
-* Methods taking a rest parameter (like `*args`) and wishing to delegate keyword
-  arguments through `foo(*args)` must now be marked with `ruby2_keywords`
-  (if not already the case). In other words, all methods wishing to delegate
-  keyword arguments through `*args` must now be marked with `ruby2_keywords`,
-  with no exception. This will make it easier to transition to other ways of
-  delegation once a library can require Ruby 3+. Previously, the `ruby2_keywords`
-  flag was kept if the receiving method took `*args`, but this was a bug and an
-  inconsistency. A good technique to find the potentially-missing `ruby2_keywords`
-  is to run the test suite, for where it fails find the last method which must
-  receive keyword arguments, use `puts nil, caller, nil` there, and check each
-  method/block on the call chain which must delegate keywords is correctly marked
-  as `ruby2_keywords`. [[Bug #18625]] [[Bug #16466]]
-
-    ```ruby
-    def target(**kw)
-    end
-
-    # Accidentally worked without ruby2_keywords in Ruby 2.7-3.1, ruby2_keywords
-    # needed in 3.2+. Just like (*args, **kwargs) or (...) would be needed on
-    # both #foo and #bar when migrating away from ruby2_keywords.
-    ruby2_keywords def bar(*args)
-      target(*args)
-    end
-
-    ruby2_keywords def foo(*args)
-      bar(*args)
-    end
-
-    foo(k: 1)
-    ```
-
-* `eval` and related methods are able to generate code coverage. Enabled using
-  `Coverage.setup(:all)` or `Coverge.setup(eval: true)`. [[Feature #19008]]
-
-* `Coverage.supported?(mode)` enables detection of what coverage modes are
-  supported. [[Feature #19026]]
-
-## Command line options
-
 ## Core classes updates
 
 Note: We're only listing outstanding class updates.
 
-* Fiber::Scheduler
-    * Introduce `Fiber::Scheduler#io_select` for non-blocking `IO.select`. [[Feature #19060]]
-
-* IO
-    * Introduce `IO#timeout=` and `IO#timeout` which can cause
-    `IO::TimeoutError` to be raised if a blocking operation exceeds the
-    specified timeout. [[Feature #18630]]
-
-    ```ruby
-    STDIN.timeout = 1
-    STDIN.read # => Blocking operation timed out! (IO::TimeoutError)
-    ```
-
-* Class
-    * `Class#attached_object`, which returns the object for which
-      the receiver is the singleton class. Raises `TypeError` if the
-      receiver is not a singleton class.
-      [[Feature #12084]]
-
-      ```ruby
-      class Foo; end
-
-      Foo.singleton_class.attached_object        #=> Foo
-      Foo.new.singleton_class.attached_object    #=> #<Foo:0x000000010491a370>
-      Foo.attached_object                        #=> TypeError: `Foo' is not a singleton class
-      nil.singleton_class.attached_object        #=> TypeError: `NilClass' is not a singleton class
-      ```
-
-* Data
-    * New core class to represent simple immutable value object. The class is
-      similar to `Struct` and partially shares an implementation, but has more
-      lean and strict API. [[Feature #16122]]
-
-* Encoding
-    * Encoding#replicate has been deprecated and will be removed in 3.3. [[Feature #18949]]
-    * The dummy `Encoding::UTF_16` and `Encoding::UTF_32` encodings no longer
-      try to dynamically guess the endian based on a byte order mark.
-      Use `Encoding::UTF_16BE/UTF_16LE` and `Encoding::UTF_32BE/UTF_32LE` instead.
-      This change speeds up getting the encoding of a String. [[Feature #18949]]
-
-* Enumerator
-    * Enumerator.product has been added.  Enumerator::Product is the implementation. [[Feature #18685]]
-
-* Hash
-    * Hash#shift now always returns nil if the hash is
-      empty, instead of returning the default value or
-      calling the default proc. [[Bug #16908]]
-
-* Integer
-    * Integer#ceildiv has been added. [[Feature #18809]]
-
-* Kernel
-    * Kernel#binding raises RuntimeError if called from a non-Ruby frame
-      (such as a method defined in C). [[Bug #18487]]
-
-* MatchData
-    * MatchData#byteoffset has been added. [[Feature #13110]]
-    * MatchData#deconstruct has been added. [[Feature #18821]]
-    * MatchData#deconstruct_keys has been added. [[Feature #18821]]
-
-* Module
-    * Module.used_refinements has been added. [[Feature #14332]]
-    * Module#refinements has been added. [[Feature #12737]]
-    * Module#const_added has been added. [[Feature #17881]]
-    * Module#undefined_instance_methods has been added. [[Feature #12655]]
-
-* Proc
-    * Proc#dup returns an instance of subclass. [[Bug #17545]]
-    * Proc#parameters now accepts lambda keyword. [[Feature #15357]]
-
-* Process
-    * Added `RLIMIT_NPTS` constant to FreeBSD platform
-
-* Regexp
-    * Regexp.new now supports passing the regexp flags not only as an Integer,
-      but also as a String.  Unknown flags raise ArgumentError.
-      Otherwise, anything other than `true`, `false`, `nil` or Integer will be warned.
-      [[Feature #18788]]
-
-* Refinement
-    * Refinement#refined_class has been added. [[Feature #12737]]
-
-* RubyVM::AbstractSyntaxTree
-    * Add `error_tolerant` option for `parse`, `parse_file` and `of`. [[Feature #19013]]
-
-* Set
-    * Set is now available as a built-in class without the need for `require "set"`. [[Feature #16989]]
-      It is currently autoloaded via the `Set` constant or a call to `Enumerable#to_set`.
-
-* Socket
-    * Added the following constants for supported platforms.
-      * `SO_INCOMING_CPU`
-      * `SO_INCOMING_NAPI_ID`
-      * `SO_RTABLE`
-      * `SO_SETFIB`
-      * `SO_USER_COOKIE`
-      * `TCP_KEEPALIVE`
-      * `TCP_CONNECTION_INFO`
-
-* String
-    * String#byteindex and String#byterindex have been added. [[Feature #13110]]
-    * Update Unicode to Version 14.0.0 and Emoji Version 14.0. [[Feature #18037]]
-      (also applies to Regexp)
-    * String#bytesplice has been added.  [[Feature #18598]]
-
-* Struct
-    * A Struct class can also be initialized with keyword arguments
-      without `keyword_init: true` on `Struct.new` [[Feature #16806]]
-
-* TracePoint
-    * TracePoint#binding now returns `nil` for `c_call`/`c_return` TracePoints.
-      [[Bug #18487]]
-    * TracePoint#enable `target_thread` keyword argument now defaults to the
-      current thread if `target` and `target_line` keyword arguments are not
-      passed. [[Bug #16889]]
+* Method
 
-## Stdlib updates
+    * `Method#source_location`, `Proc#source_location`, and
+      `UnboundMethod#source_location` now return extended location
+      information with 5 elements: `[path, start_line, start_column,
+      end_line, end_column]`. The previous 2-element format `[path,
+      line]` can still be obtained by calling `.take(2)` on the result.
+      [[Feature #6012]]
 
-* SyntaxSuggest
-
-  * The feature of `syntax_suggest` formerly `dead_end` is integrated in Ruby.
-    [[Feature #18159]]
-
-*   The following default gems are updated.
-    * RubyGems 3.4.0.dev
-    * bigdecimal 3.1.2
-    * bundler 2.4.0.dev
-    * cgi 0.3.3
-    * date 3.2.3
-    * erb 3.0.0
-    * error_highlight 0.5.1
-    * etc 1.4.0
-    * fiddle 1.1.1
-    * io-console 0.5.11
-    * io-nonblock 0.1.1
-    * io-wait 0.3.0.pre
-    * ipaddr 1.2.4
-    * irb 1.4.2
-    * json 2.6.2
-    * logger 1.5.1
-    * net-http 0.3.0
-    * net-protocol 0.1.3
-    * openssl 3.1.0.pre
-    * ostruct 0.5.5
-    * psych 5.0.0.dev
-    * reline 0.3.1
-    * securerandom 0.2.0
-    * set 1.0.3
-    * stringio 3.0.3
-    * syntax_suggest 0.0.1
-    * timeout 0.3.0
-*   The following bundled gems are updated.
-    * minitest 5.16.3
-    * power_assert 2.0.2
-    * test-unit 3.5.5
-    * net-ftp 0.2.0
-    * net-imap 0.3.1
-    * net-pop 0.1.2
-    * net-smtp 0.3.3
-    * rbs 2.7.0
-    * typeprof 0.21.3
-    * debug 1.6.3
-*   The following default gems are now bundled gems.
-
-## Compatibility issues
+* Set
 
-Note: Excluding feature bug fixes.
+    * A deprecated behavior, `Set#to_set`, `Range#to_set`, and
+      `Enumerable#to_set` accepting arguments, was removed.  [[Feature #21390]]
 
-### Removed constants
+## Stdlib updates
 
-The following deprecated constants are removed.
+### The following bundled gems are added.
 
-* `Fixnum` and `Bignum` [[Feature #12005]]
-* `Random::DEFAULT` [[Feature #17351]]
-* `Struct::Group`
-* `Struct::Passwd`
 
-### Removed methods
+We only list stdlib changes that are notable feature changes.
 
-The following deprecated methods are removed.
+Other changes are listed in the following sections. We also listed release
+history from the previous bundled version that is Ruby 3.4.0 if it has GitHub
+releases.
 
-* `Dir.exists?` [[Feature #17391]]
-* `File.exists?` [[Feature #17391]]
-* `Kernel#=~` [[Feature #15231]]
-* `Kernel#taint`, `Kernel#untaint`, `Kernel#tainted?`
-  [[Feature #16131]]
-* `Kernel#trust`, `Kernel#untrust`, `Kernel#untrusted?`
-  [[Feature #16131]]
+### The following bundled gem is promoted from default gems.
 
-### Source code incompatiblity of extension libraries [[Bug #19100]]
+* tsort 0.2.0
 
-* Extension libraries provide PRNG, subclasses of `Random`, need updates.
-  See [PRNG update] below for more information.
+### The following default gem is added.
 
-## Stdlib compatibility issues
+### The following default gems are updated.
 
-* `Psych` no longer bundles libyaml sources.
-  And also `Fiddle` no longer bundles libffi sources.
-  Users need to install the libyaml/libffi library themselves via the package
-  system. [[Feature #18571]]
+* RubyGems 4.1.0.dev
+* bundler 4.1.0.dev
+* prism 1.8.0
+* stringio 3.2.1.dev
+* strscan 3.1.7.dev
 
-## C API updates
+### The following bundled gems are updated.
 
-### Updated C APIs
+* minitest 6.0.1
+* test-unit 3.7.7
+* rss 0.3.2
+* net-imap 0.6.2
+* rbs 3.10.2
+* typeprof 0.31.1
+* debug 1.11.1
+* mutex_m 0.3.0
+* resolv-replace 0.2.0
+* rdoc 7.1.0
 
-The following APIs are updated.
+### RubyGems and Bundler
 
-* PRNG update
+Ruby 4.0 bundled RubyGems and Bundler version 4. see the following links for details.
 
-    `rb_random_interface_t` updated and versioned.
-    Extension libraries which use this interface and built for older versions.
-    Also `init_int32` function needs to be defined.
+## Supported platforms
 
-### Removed C APIs
+## Compatibility issues
 
-The following deprecated APIs are removed.
+## Stdlib compatibility issues
 
-* `rb_cData` variable.
-* "taintedness" and "trustedness" functions. [[Feature #16131]]
+## C API updates
 
 ## Implementation improvements
 
-* Fixed several race conditions in `Kernel#autoload`. [[Bug #18782]]
-* Cache invalidation for expressions referencing constants is now
-  more fine-grained. `RubyVM.stat(:global_constant_state)` was
-  removed because it was closely tied to the previous caching scheme
-  where setting any constant invalidates all caches in the system.
-  New keys, `:constant_cache_invalidations` and `:constant_cache_misses`,
-  were introduced to help with use cases for `:global_constant_state`.
-  [[Feature #18589]]
+### Ractor
+
+A lot of work has gone into making Ractors more stable, performant, and usable. These improvements bring Ractor implementation closer to leaving experimental status.
 
 ## JIT
 
-### YJIT
-
-* Support arm64 / aarch64 on UNIX platforms.
-* Building YJIT requires Rust 1.58.1+. [[Feature #18481]]
-* Physical memory for JIT code is lazily allocated. Unlike Ruby 3.1,
-  the RSS of a Ruby process is minimized because virtual memory pages
-  allocated by `--yjit-exec-mem-size` will not be mapped to physical
-  memory pages until actually utilized by JIT code.
-* Introduce Code GC that frees all code pages when the memory consumption
-  by JIT code reaches `--yjit-exec-mem-size`.
-* `RubyVM::YJIT.runtime_stats` returns Code GC metrics in addition to
-  existing `inline_code_size` and `outlined_code_size` keys:
-  `code_gc_count`, `live_page_count`, `freed_page_count`, and `freed_code_size`.
-
-### MJIT
-
-* The MJIT compiler is re-implemented in Ruby as a standard library `mjit`.
-* MJIT compiler is executed under a forked Ruby process instead of
-  doing it in a native thread called MJIT worker. [[Feature #18968]]
-  * As a result, Microsoft Visual Studio (MSWIN) is no longer supported.
-* MinGW is no longer supported. [[Feature #18824]]
-
-## Static analysis
-
-### RBS
-
-### TypeProf
-
-## Debugger
-
-## error_highlight
-
-## IRB Autocomplete and Document Display
-
-## Miscellaneous changes
-
-[Feature #12005]: https://bugs.ruby-lang.org/issues/12005
-[Feature #12084]: https://bugs.ruby-lang.org/issues/12084
-[Feature #12655]: https://bugs.ruby-lang.org/issues/12655
-[Feature #12737]: https://bugs.ruby-lang.org/issues/12737
-[Feature #13110]: https://bugs.ruby-lang.org/issues/13110
-[Feature #14332]: https://bugs.ruby-lang.org/issues/14332
-[Feature #15231]: https://bugs.ruby-lang.org/issues/15231
-[Feature #15357]: https://bugs.ruby-lang.org/issues/15357
-[Bug #15928]:     https://bugs.ruby-lang.org/issues/15928
-[Feature #16122]: https://bugs.ruby-lang.org/issues/16122
-[Feature #16131]: https://bugs.ruby-lang.org/issues/16131
-[Bug #16466]:     https://bugs.ruby-lang.org/issues/16466
-[Feature #16806]: https://bugs.ruby-lang.org/issues/16806
-[Bug #16889]:     https://bugs.ruby-lang.org/issues/16889
-[Bug #16908]:     https://bugs.ruby-lang.org/issues/16908
-[Feature #16989]: https://bugs.ruby-lang.org/issues/16989
-[Feature #17351]: https://bugs.ruby-lang.org/issues/17351
-[Feature #17391]: https://bugs.ruby-lang.org/issues/17391
-[Bug #17545]:     https://bugs.ruby-lang.org/issues/17545
-[Feature #17881]: https://bugs.ruby-lang.org/issues/17881
-[Feature #18037]: https://bugs.ruby-lang.org/issues/18037
-[Feature #18159]: https://bugs.ruby-lang.org/issues/18159
-[Feature #18351]: https://bugs.ruby-lang.org/issues/18351
-[Feature #18481]: https://bugs.ruby-lang.org/issues/18481
-[Bug #18487]:     https://bugs.ruby-lang.org/issues/18487
-[Feature #18571]: https://bugs.ruby-lang.org/issues/18571
-[Feature #18585]: https://bugs.ruby-lang.org/issues/18585
-[Feature #18589]: https://bugs.ruby-lang.org/issues/18589
-[Feature #18598]: https://bugs.ruby-lang.org/issues/18598
-[Bug #18625]:     https://bugs.ruby-lang.org/issues/18625
-[Feature #18630]: https://bugs.ruby-lang.org/issues/18630
-[Bug #18633]:     https://bugs.ruby-lang.org/issues/18633
-[Feature #18685]: https://bugs.ruby-lang.org/issues/18685
-[Bug #18782]:     https://bugs.ruby-lang.org/issues/18782
-[Feature #18788]: https://bugs.ruby-lang.org/issues/18788
-[Feature #18809]: https://bugs.ruby-lang.org/issues/18809
-[Feature #18821]: https://bugs.ruby-lang.org/issues/18821
-[Feature #18824]: https://bugs.ruby-lang.org/issues/18824
-[Feature #18949]: https://bugs.ruby-lang.org/issues/18949
-[Feature #18968]: https://bugs.ruby-lang.org/issues/18968
-[Feature #19008]: https://bugs.ruby-lang.org/issues/19008
-[Feature #19013]: https://bugs.ruby-lang.org/issues/19013
-[Feature #19026]: https://bugs.ruby-lang.org/issues/19026
-[Feature #19060]: https://bugs.ruby-lang.org/issues/19060
-[Bug #19100]:     https://bugs.ruby-lang.org/issues/19100
+[Feature #6012]: https://bugs.ruby-lang.org/issues/6012
+[Feature #21390]: https://bugs.ruby-lang.org/issues/21390
diff --git a/README.ja.md b/README.ja.md
index bb69c09055..9bbc3a83a5 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -1,10 +1,10 @@
 [![Actions Status: MinGW](https://github.com/ruby/ruby/workflows/MinGW/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"MinGW")
-[![Actions Status: MJIT](https://github.com/ruby/ruby/workflows/MJIT/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"MJIT")
 [![Actions Status: Ubuntu](https://github.com/ruby/ruby/workflows/Ubuntu/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"Ubuntu")
 [![Actions Status: Windows](https://github.com/ruby/ruby/workflows/Windows/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"Windows")
 [![AppVeyor status](https://ci.appveyor.com/api/projects/status/0sy8rrxut4o0k960/branch/master?svg=true)](https://ci.appveyor.com/project/ruby/ruby/branch/master)
 [![Travis Status](https://app.travis-ci.com/ruby/ruby.svg?branch=master)](https://app.travis-ci.com/ruby/ruby)
-[![Cirrus Status](https://api.cirrus-ci.com/github/ruby/ruby.svg)](https://cirrus-ci.com/github/ruby/ruby/master)
+
+[English](rdoc-ref:README.md)
 
 # Rubyとは
 
@@ -26,7 +26,7 @@ Rubyはテキスト処理関係の能力などに優れ，Perlと同じくらい
 *   ダイナミックローディング (アーキテクチャによる)
 *   移植性が高い．多くのUnix-like/POSIX互換プラットフォーム上で動くだけでなく，Windows， macOS，
     Haikuなどの上でも動く cf.
-    https://github.com/ruby/ruby/blob/master/doc/contributing.rdoc#platform-maintainers
+    https://docs.ruby-lang.org/en/master/maintainers_md.html#label-Platform+Maintainers
 
 
 ## 入手法
@@ -41,26 +41,19 @@ https://www.ruby-lang.org/ja/downloads/
 
 ミラーをGitHubに公開しています． 以下のコマンドでリポジトリを取得できます．
 
-    $ git clone https://github.com/ruby/ruby.git
+```console
+$ git clone https://github.com/ruby/ruby.git
+```
 
 他のブランチの一覧は次のコマンドで見られます．
 
-    $ git ls-remote https://github.com/ruby/ruby.git
+```console
+$ git ls-remote https://github.com/ruby/ruby.git
+```
 
 Rubyリポジトリの本来のmasterは https://git.ruby-lang.org/ruby.git にあります．
 コミッタはこちらを使います．
 
-### Subversion
-
-古いRubyのバージョンのソースコードは次のコマンドでも取得できます．
-
-    $ svn co https://svn.ruby-lang.org/repos/ruby/branches/ruby_2_6/ ruby
-
-他のブランチの一覧は次のコマンドで見られます．
-
-    $ svn ls https://svn.ruby-lang.org/repos/ruby/branches/
-
-
 ## ホームページ
 
 RubyのホームページのURLは
@@ -71,20 +64,20 @@ https://www.ruby-lang.org/
 
 ## メーリングリスト
 
-Rubyのメーリングリストがあります．参加希望の方は [ruby-list-request@ruby-lang.org] まで本文に
+Rubyのメーリングリストがあります．参加希望の方は [ruby-list-request@ml.ruby-lang.org] まで件名に
 
-    subscribe
+    join
 
 と書いて送って下さい．
 
 Ruby開発者向けメーリングリストもあります．こちらではrubyのバグ，将来の仕様拡張など実装上の問題について議論されています．
-参加希望の方は [ruby-dev-request@ruby-lang.org] までruby-listと同様の方法でメールしてください．
+参加希望の方は [ruby-dev-request@ml.ruby-lang.org] までruby-listと同様の方法でメールしてください．
 
 Ruby拡張モジュールについて話し合うruby-extメーリングリストと数学関係の話題について話し合うruby-mathメーリングリストと
 英語でrubyについて話し合うruby-talkメーリングリストもあります．参加方法はどれも同じです．
 
-[ruby-list-request@ruby-lang.org]: mailto:ruby-list-request@ruby-lang.org?subject=Join%20Ruby%20Mailing%20List&body=subscribe
-[ruby-dev-request@ruby-lang.org]: mailto:ruby-dev-request@ruby-lang.org?subject=Join%20Ruby%20Mailing%20List&body=subscribe
+[ruby-list-request@ml.ruby-lang.org]: mailto:ruby-list-request@ml.ruby-lang.org?subject=join
+[ruby-dev-request@ml.ruby-lang.org]: mailto:ruby-dev-request@ml.ruby-lang.org?subject=join
 
 ## コンパイル・インストール
 
@@ -163,7 +156,7 @@ UNIXであれば `configure` がほとんどの差異を吸収してくれるは
 
 ## 配布条件
 
-[COPYING.ja](COPYING.ja) ファイルを参照してください．
+[COPYING.ja](https://docs.ruby-lang.org/en/master/COPYING_ja.html) ファイルを参照してください．
 
 ## フィードバック
 
diff --git a/README.md b/README.md
index 35ef2d9e89..02435b419e 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,9 @@
 [![Actions Status: MinGW](https://github.com/ruby/ruby/workflows/MinGW/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"MinGW")
-[![Actions Status: MJIT](https://github.com/ruby/ruby/workflows/MJIT/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"MJIT")
 [![Actions Status: Ubuntu](https://github.com/ruby/ruby/workflows/Ubuntu/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"Ubuntu")
 [![Actions Status: Windows](https://github.com/ruby/ruby/workflows/Windows/badge.svg)](https://github.com/ruby/ruby/actions?query=workflow%3A"Windows")
-[![AppVeyor status](https://ci.appveyor.com/api/projects/status/0sy8rrxut4o0k960/branch/master?svg=true)](https://ci.appveyor.com/project/ruby/ruby/branch/master)
 [![Travis Status](https://app.travis-ci.com/ruby/ruby.svg?branch=master)](https://app.travis-ci.com/ruby/ruby)
-[![Cirrus Status](https://api.cirrus-ci.com/github/ruby/ruby.svg)](https://cirrus-ci.com/github/ruby/ruby/master)
+
+[日本語](rdoc-ref:README.ja.md)
 
 # What is Ruby?
 
@@ -25,15 +24,20 @@ It is simple, straightforward, and extensible.
 * Dynamic Loading of Object Files (on some architectures)
 * Highly Portable (works on many Unix-like/POSIX compatible platforms as
   well as Windows, macOS, etc.) cf.
-  https://github.com/ruby/ruby/blob/master/doc/maintainers.rdoc#label-Platform+Maintainers
+    https://docs.ruby-lang.org/en/master/maintainers_md.html#label-Platform+Maintainers
 
-## How to get Ruby with Git
+## 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/
 
+You can download release packages and the snapshot of the repository. If you want to
+download whole versions of Ruby, please visit https://www.ruby-lang.org/en/downloads/releases/.
+
+### Download with Git
+
 The mirror of the Ruby source tree can be checked out with the following command:
 
     $ git clone https://github.com/ruby/ruby.git
@@ -48,7 +52,7 @@ if you are a committer.
 
 ## How to build
 
-see [Building Ruby](doc/contributing/building_ruby.md)
+See [Building Ruby](https://docs.ruby-lang.org/en/master/contributing/building_ruby_md.html)
 
 ## Ruby home page
 
@@ -64,11 +68,11 @@ https://www.ruby-lang.org/
 There is a mailing list to discuss Ruby. To subscribe to this list, please
 send the following phrase:
 
-    subscribe
+    join
 
-in the mail body (not subject) to the address [ruby-talk-request@ruby-lang.org].
+in the mail subject (not body) to the address [ruby-talk-request@ml.ruby-lang.org].
 
-[ruby-talk-request@ruby-lang.org]: mailto:ruby-talk-request@ruby-lang.org?subject=Join%20Ruby%20Mailing%20List&body=subscribe
+[ruby-talk-request@ml.ruby-lang.org]: mailto:ruby-talk-request@ml.ruby-lang.org?subject=join
 
 ## Copying
 
@@ -83,7 +87,7 @@ Bugs should be reported at https://bugs.ruby-lang.org. Read ["Reporting Issues"]
 
 ## Contributing
 
-See ["Contributing to Ruby"](https://docs.ruby-lang.org/en/master/contributing_md.html), which includes setup and build instructions.
+See ["Contributing to Ruby"](https://docs.ruby-lang.org/en/master/contributing/contributing_md.html), which includes setup and build instructions.
 
 ## The Author
 
diff --git a/addr2line.c b/addr2line.c
index 0d45ec9414..19a6a425c1 100644
--- a/addr2line.c
+++ b/addr2line.c
@@ -8,10 +8,14 @@
 
 **********************************************************************/
 
-#if defined(__clang__)
+#if defined(__clang__) && defined(__has_warning)
+#if __has_warning("-Wgnu-empty-initializer")
 #pragma clang diagnostic ignored "-Wgnu-empty-initializer"
+#endif
+#if __has_warning("-Wgcc-compat")
 #pragma clang diagnostic ignored "-Wgcc-compat"
 #endif
+#endif
 
 #include "ruby/internal/config.h"
 #include "ruby/defines.h"
@@ -52,13 +56,26 @@
 #  ifdef _AIX
 #pragma alloca
 #  else
-#   ifndef alloca		/* predefined by HP cc +Olibcalls */
+#   ifndef alloca                /* predefined by HP cc +Olibcalls */
 void *alloca();
 #   endif
 #  endif /* AIX */
-# endif	/* HAVE_ALLOCA_H */
+# endif        /* HAVE_ALLOCA_H */
+# ifndef UNREACHABLE
+#  define UNREACHABLE __builtin_unreachable()
+# endif
+# ifndef UNREACHABLE_RETURN
+#  define UNREACHABLE_RETURN(_) __builtin_unreachable()
+# endif
 #endif /* __GNUC__ */
 
+#ifndef UNREACHABLE
+# define UNREACHABLE abort()
+#endif
+#ifndef UNREACHABLE_RETURN
+# define UNREACHABLE_RETURN(_) return (abort(), (_))
+#endif
+
 #ifdef HAVE_DLADDR
 # include <dlfcn.h>
 #endif
@@ -127,7 +144,7 @@ void *alloca();
 #define DW_LNE_define_file              0x03
 #define DW_LNE_set_discriminator        0x04  /* DWARF4 */
 
-PRINTF_ARGS(static int kprintf(const char *fmt, ...), 1, 2);
+#define kprintf(...) fprintf(errout, "" __VA_ARGS__)
 
 typedef struct line_info {
     const char *dirname;
@@ -159,12 +176,15 @@ typedef struct obj_info {
     struct dwarf_section debug_info;
     struct dwarf_section debug_line;
     struct dwarf_section debug_ranges;
+    struct dwarf_section debug_str_offsets;
+    struct dwarf_section debug_addr;
     struct dwarf_section debug_rnglists;
     struct dwarf_section debug_str;
+    struct dwarf_section debug_line_str;
     struct obj_info *next;
 } obj_info_t;
 
-#define DWARF_SECTION_COUNT 6
+#define DWARF_SECTION_COUNT 9
 
 static struct dwarf_section *
 obj_dwarf_section_at(obj_info_t *obj, int n)
@@ -174,11 +194,14 @@ obj_dwarf_section_at(obj_info_t *obj, int n)
         &obj->debug_info,
         &obj->debug_line,
         &obj->debug_ranges,
+        &obj->debug_str_offsets,
+        &obj->debug_addr,
         &obj->debug_rnglists,
-        &obj->debug_str
+        &obj->debug_str,
+        &obj->debug_line_str
     };
     if (n < 0 || DWARF_SECTION_COUNT <= n) {
-        abort();
+        UNREACHABLE_RETURN(0);
     }
     return ary[n];
 }
@@ -197,13 +220,13 @@ uleb128(const 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;
+        unsigned char b = (unsigned char)*(*p)++;
+        if (b < 0x80) {
+            r += (unsigned long)b << s;
+            break;
+        }
+        r += (b & 0x7f) << s;
+        s += 7;
     }
     return r;
 }
@@ -214,85 +237,103 @@ sleb128(const 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;
+        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, const char *p)
+get_nth_dirname(unsigned long dir, const char *p, FILE *errout)
 {
     if (!dir--) {
-	return "";
+        return "";
     }
     while (dir--) {
-	while (*p) p++;
-	p++;
-	if (!*p) {
-	    kprintf("Unexpected directory number %lu in %s\n",
-		    dir, binary_filename);
-	    return "";
-	}
+        while (*p) p++;
+        p++;
+        if (!*p) {
+            kprintf("Unexpected directory number %lu in %s\n",
+                    dir, binary_filename);
+            return "";
+        }
     }
     return p;
 }
 
+static const char *parse_ver5_debug_line_header(
+    const char *p, int idx, uint8_t format,
+    obj_info_t *obj, const char **out_path,
+    uint64_t *out_directory_index, FILE *errout);
+
 static void
-fill_filename(int file, const char *include_directories, const char *filenames, line_info_t *line, obj_info_t *obj)
+fill_filename(int file, uint8_t format, uint16_t version, const char *include_directories,
+              const char *filenames, line_info_t *line, obj_info_t *obj, FILE *errout)
 {
     int i;
     const char *p = filenames;
     const 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);
-	}
+    if (version >= 5) {
+        const char *path;
+        uint64_t directory_index = -1;
+        parse_ver5_debug_line_header(filenames, file, format, obj, &path, &directory_index, errout);
+        line->filename = path;
+        parse_ver5_debug_line_header(include_directories, (int)directory_index, format, obj, &path, NULL, errout);
+        line->dirname = path;
+    }
+    else {
+        for (i = 1; i <= file; i++) {
+            filename = p;
+            if (!*p) {
+#ifndef __APPLE__
+                /* Need to output binary file name? */
+                kprintf("Unexpected file number %d in %s at %tx\n",
+                        file, binary_filename, filenames - obj->mapped);
+#endif
+                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, errout);
+            }
+        }
     }
 }
 
 static void
 fill_line(int num_traces, void **traces, uintptr_t addr, int file, int line,
-	  const char *include_directories, const char *filenames,
-	  obj_info_t *obj, line_info_t *lines, int offset)
+          uint8_t format, uint16_t version, const char *include_directories, const char *filenames,
+          obj_info_t *obj, line_info_t *lines, int offset, FILE *errout)
 {
     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.
+        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;
-	}
+        if (addr < a && a < addr + 100) {
+            fill_filename(file, format, version, include_directories, filenames, &lines[i], obj, errout);
+            lines[i].line = line;
+        }
     }
 }
 
@@ -315,7 +356,7 @@ struct LineNumberProgramHeader {
 };
 
 static int
-parse_debug_line_header(const char **pp, struct LineNumberProgramHeader *header)
+parse_debug_line_header(obj_info_t *obj, const char **pp, struct LineNumberProgramHeader *header, FILE *errout)
 {
     const char *p = *pp;
     header->unit_length = *(uint32_t *)p;
@@ -323,8 +364,8 @@ parse_debug_line_header(const char **pp, struct LineNumberProgramHeader *header)
 
     header->format = 4;
     if (header->unit_length == 0xffffffff) {
-	header->unit_length = *(uint64_t *)p;
-	p += sizeof(uint64_t);
+        header->unit_length = *(uint64_t *)p;
+        p += sizeof(uint64_t);
         header->format = 8;
     }
 
@@ -332,7 +373,13 @@ parse_debug_line_header(const char **pp, struct LineNumberProgramHeader *header)
 
     header->version = *(uint16_t *)p;
     p += sizeof(uint16_t);
-    if (header->version > 4) return -1;
+    if (header->version > 5) return -1;
+
+    if (header->version >= 5) {
+        /* address_size = *(uint8_t *)p++; */
+        /* segment_selector_size = *(uint8_t *)p++; */
+        p += 2;
+    }
 
     header->header_length = header->format == 4 ? *(uint32_t *)p : *(uint64_t *)p;
     p += header->format;
@@ -353,20 +400,27 @@ parse_debug_line_header(const char **pp, struct LineNumberProgramHeader *header)
     /* header->standard_opcode_lengths = (uint8_t *)p - 1; */
     p += header->opcode_base - 1;
 
-    header->include_directories = p;
+    if (header->version >= 5) {
+        header->include_directories = p;
+        p = parse_ver5_debug_line_header(p, -1, header->format, obj, NULL, NULL, errout);
+        header->filenames = p;
+    }
+    else {
+        header->include_directories = p;
 
-    /* temporary measure for compress-debug-sections */
-    if (p >= header->cu_end) return -1;
+        /* 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++;
+        /* skip include directories */
+        while (*p) {
+            p = memchr(p, '\0', header->cu_end - p);
+            if (!p) return -1;
+            p++;
+        }
+        p++;
 
-    header->filenames = p;
+        header->filenames = p;
+    }
 
     *pp = header->cu_start;
 
@@ -375,7 +429,7 @@ parse_debug_line_header(const char **pp, struct LineNumberProgramHeader *header)
 
 static int
 parse_debug_line_cu(int num_traces, void **traces, const char **debug_line,
-		obj_info_t *obj, line_info_t *lines, int offset)
+                obj_info_t *obj, line_info_t *lines, int offset, FILE *errout)
 {
     const char *p = (const char *)*debug_line;
     struct LineNumberProgramHeader header;
@@ -392,107 +446,109 @@ parse_debug_line_cu(int num_traces, void **traces, const char **debug_line,
     /* int epilogue_begin = 0; */
     /* unsigned int isa = 0; */
 
-    if (parse_debug_line_header(&p, &header))
+    if (parse_debug_line_header(obj, &p, &header, errout))
         return -1;
     is_stmt = header.default_is_stmt;
 
-#define FILL_LINE()						    \
-    do {							    \
-	fill_line(num_traces, traces, addr, file, line,		    \
+#define FILL_LINE()                                                 \
+    do {                                                            \
+        fill_line(num_traces, traces, addr, file, line,             \
+                  header.format,                                    \
+                  header.version,                                   \
                   header.include_directories,                       \
                   header.filenames,                                 \
-		  obj, lines, offset);				    \
-	/*basic_block = prologue_end = epilogue_begin = 0;*/	    \
+                  obj, lines, offset, errout);                      \
+        /*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(&p) * header.minimum_instruction_length;
-	    addr += a;
-	    break;
-	case DW_LNS_advance_line: {
-	    long a = sleb128(&p);
-	    line += a;
-	    break;
-	}
-	case DW_LNS_set_file:
-	    file = (unsigned int)uleb128(&p);
-	    break;
-	case DW_LNS_set_column:
-	    /*column = (unsigned int)*/(void)uleb128(&p);
-	    break;
-	case DW_LNS_negate_stmt:
-	    is_stmt = !is_stmt;
-	    break;
-	case DW_LNS_set_basic_block:
-	    /*basic_block = 1; */
-	    break;
-	case DW_LNS_const_add_pc:
-	    a = ((255UL - header.opcode_base) / header.line_range) *
-		header.minimum_instruction_length;
-	    addr += a;
-	    break;
-	case DW_LNS_fixed_advance_pc:
-	    a = *(uint16_t *)p;
-	    p += sizeof(uint16_t);
-	    addr += a;
-	    break;
-	case DW_LNS_set_prologue_end:
-	    /* prologue_end = 1; */
-	    break;
-	case DW_LNS_set_epilogue_begin:
-	    /* epilogue_begin = 1; */
-	    break;
-	case DW_LNS_set_isa:
-	    /* isa = (unsigned int)*/(void)uleb128(&p);
-	    break;
-	case 0:
-	    a = uleb128(&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(&p);
-		break;
-	    default:
-		kprintf("Unknown extended opcode: %d in %s\n",
-			op, binary_filename);
-	    }
-	    break;
-	default: {
+        unsigned long a;
+        unsigned char op = *p++;
+        switch (op) {
+        case DW_LNS_copy:
+            FILL_LINE();
+            break;
+        case DW_LNS_advance_pc:
+            a = uleb128(&p) * header.minimum_instruction_length;
+            addr += a;
+            break;
+        case DW_LNS_advance_line: {
+            long a = sleb128(&p);
+            line += a;
+            break;
+        }
+        case DW_LNS_set_file:
+            file = (unsigned int)uleb128(&p);
+            break;
+        case DW_LNS_set_column:
+            /*column = (unsigned int)*/(void)uleb128(&p);
+            break;
+        case DW_LNS_negate_stmt:
+            is_stmt = !is_stmt;
+            break;
+        case DW_LNS_set_basic_block:
+            /*basic_block = 1; */
+            break;
+        case DW_LNS_const_add_pc:
+            a = ((255UL - header.opcode_base) / header.line_range) *
+                header.minimum_instruction_length;
+            addr += a;
+            break;
+        case DW_LNS_fixed_advance_pc:
+            a = *(uint16_t *)p;
+            p += sizeof(uint16_t);
+            addr += a;
+            break;
+        case DW_LNS_set_prologue_end:
+            /* prologue_end = 1; */
+            break;
+        case DW_LNS_set_epilogue_begin:
+            /* epilogue_begin = 1; */
+            break;
+        case DW_LNS_set_isa:
+            /* isa = (unsigned int)*/(void)uleb128(&p);
+            break;
+        case 0:
+            a = uleb128(&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(&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();
-	}
-	}
+            FILL_LINE();
+        }
+        }
     }
     *debug_line = (char *)p;
     return 0;
@@ -500,17 +556,17 @@ parse_debug_line_cu(int num_traces, void **traces, const char **debug_line,
 
 static int
 parse_debug_line(int num_traces, void **traces,
-		 const char *debug_line, unsigned long size,
-		 obj_info_t *obj, line_info_t *lines, int offset)
+                 const char *debug_line, unsigned long size,
+                 obj_info_t *obj, line_info_t *lines, int offset, FILE *errout)
 {
     const 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 (parse_debug_line_cu(num_traces, traces, &debug_line, obj, lines, offset, errout))
+            return -1;
     }
     if (debug_line != debug_line_end) {
-	kprintf("Unexpected size of .debug_line in %s\n",
-		binary_filename);
+        kprintf("Unexpected size of .debug_line in %s\n",
+                binary_filename);
     }
     return 0;
 }
@@ -518,7 +574,7 @@ parse_debug_line(int num_traces, void **traces,
 /* 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);
+           obj_info_t **objp, line_info_t *lines, int offset, FILE *errout);
 
 static void
 append_obj(obj_info_t **objp)
@@ -546,7 +602,7 @@ append_obj(obj_info_t **objp)
 // check the path pattern of "/usr/lib/debug/usr/bin/ruby.debug"
 static void
 follow_debuglink(const char *debuglink, int num_traces, void **traces,
-		 obj_info_t **objp, line_info_t *lines, int offset)
+                 obj_info_t **objp, line_info_t *lines, int offset, FILE *errout)
 {
     static const char global_debug_dir[] = "/usr/lib/debug";
     const size_t global_debug_dir_len = sizeof(global_debug_dir) - 1;
@@ -556,13 +612,13 @@ follow_debuglink(const char *debuglink, int num_traces, void **traces,
 
     p = strrchr(binary_filename, '/');
     if (!p) {
-	return;
+        return;
     }
     p[1] = '\0';
 
     len = strlen(binary_filename);
     if (len >= PATH_MAX - global_debug_dir_len)
-	len = PATH_MAX - global_debug_dir_len - 1;
+        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;
@@ -572,21 +628,22 @@ follow_debuglink(const char *debuglink, int num_traces, void **traces,
     o2 = *objp;
     o2->base_addr = o1->base_addr;
     o2->path = o1->path;
-    fill_lines(num_traces, traces, 0, objp, lines, offset);
+    fill_lines(num_traces, traces, 0, objp, lines, offset, errout);
 }
 
 // check the path pattern of "/usr/lib/debug/.build-id/ab/cdef1234.debug"
 static void
 follow_debuglink_build_id(const char *build_id, size_t build_id_size, int num_traces, void **traces,
-                          obj_info_t **objp, line_info_t *lines, int offset)
+                          obj_info_t **objp, line_info_t *lines, int offset, FILE *errout)
 {
     static const char global_debug_dir[] = "/usr/lib/debug/.build-id/";
+    static const char debug_suffix[] = ".debug";
     const size_t global_debug_dir_len = sizeof(global_debug_dir) - 1;
     char *p;
     obj_info_t *o1 = *objp, *o2;
     size_t i;
 
-    if (PATH_MAX < global_debug_dir_len + 1 + build_id_size * 2 + 6) return;
+    if (PATH_MAX < global_debug_dir_len + build_id_size * 2 + sizeof(debug_suffix)) return;
 
     memcpy(binary_filename, global_debug_dir, global_debug_dir_len);
     p = binary_filename + global_debug_dir_len;
@@ -597,13 +654,13 @@ follow_debuglink_build_id(const char *build_id, size_t build_id_size, int num_tr
         *p++ = tbl[n % 16];
         if (i == 0) *p++ = '/';
     }
-    strcpy(p, ".debug");
+    memcpy(p, debug_suffix, sizeof(debug_suffix));
 
     append_obj(objp);
     o2 = *objp;
     o2->base_addr = o1->base_addr;
     o2->path = o1->path;
-    fill_lines(num_traces, traces, 0, objp, lines, offset);
+    fill_lines(num_traces, traces, 0, objp, lines, offset, errout);
 }
 #endif
 
@@ -807,7 +864,11 @@ enum
     DW_FORM_addrx1 = 0x29,
     DW_FORM_addrx2 = 0x2a,
     DW_FORM_addrx3 = 0x2b,
-    DW_FORM_addrx4 = 0x2c
+    DW_FORM_addrx4 = 0x2c,
+
+    /* GNU extensions for referring to .gnu_debugaltlink dwz-compressed info */
+    DW_FORM_GNU_ref_alt = 0x1f20,
+    DW_FORM_GNU_strp_alt = 0x1f21
 };
 
 /* Range list entry encodings */
@@ -827,16 +888,23 @@ enum {
     VAL_cstr = 1,
     VAL_data = 2,
     VAL_uint = 3,
-    VAL_int = 4
+    VAL_int = 4,
+    VAL_addr = 5
 };
 
 # define ABBREV_TABLE_SIZE 256
 typedef struct {
     obj_info_t *obj;
     const char *file;
+    uint8_t current_version;
     const char *current_cu;
     uint64_t current_low_pc;
+    uint64_t current_str_offsets_base;
+    uint64_t current_addr_base;
+    uint64_t current_rnglists_base;
     const char *debug_line_cu_end;
+    uint8_t debug_line_format;
+    uint16_t debug_line_version;
     const char *debug_line_files;
     const char *debug_line_directories;
     const char *p;
@@ -861,6 +929,7 @@ typedef struct {
         const char *ptr;
         uint64_t uint64;
         int64_t int64;
+        uint64_t addr_idx;
     } as;
     uint64_t off;
     uint64_t at;
@@ -976,6 +1045,9 @@ debug_info_reader_init(DebugInfoReader *reader, obj_info_t *obj)
     reader->pend = obj->debug_info.ptr + obj->debug_info.size;
     reader->debug_line_cu_end = obj->debug_line.ptr;
     reader->current_low_pc = 0;
+    reader->current_str_offsets_base = 0;
+    reader->current_addr_base = 0;
+    reader->current_rnglists_base = 0;
 }
 
 static void
@@ -1014,16 +1086,18 @@ di_read_debug_abbrev_cu(DebugInfoReader *reader)
 }
 
 static int
-di_read_debug_line_cu(DebugInfoReader *reader)
+di_read_debug_line_cu(DebugInfoReader *reader, FILE *errout)
 {
     const char *p;
     struct LineNumberProgramHeader header;
 
     p = (const char *)reader->debug_line_cu_end;
-    if (parse_debug_line_header(&p, &header))
+    if (parse_debug_line_header(reader->obj, &p, &header, errout))
         return -1;
 
     reader->debug_line_cu_end = (char *)header.cu_end;
+    reader->debug_line_format = header.format;
+    reader->debug_line_version = header.version;
     reader->debug_line_directories = (char *)header.include_directories;
     reader->debug_line_files = (char *)header.filenames;
 
@@ -1031,6 +1105,13 @@ di_read_debug_line_cu(DebugInfoReader *reader)
 }
 
 static void
+set_addr_idx_value(DebugInfoValue *v, uint64_t n)
+{
+    v->as.addr_idx = n;
+    v->type = VAL_addr;
+}
+
+static void
 set_uint_value(DebugInfoValue *v, uint64_t n)
 {
     v->as.uint64 = n;
@@ -1077,19 +1158,46 @@ get_cstr_value(DebugInfoValue *v)
     }
 }
 
-static void
-debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoValue *v)
+static const char *
+resolve_strx(DebugInfoReader *reader, uint64_t idx)
+{
+    const char *p = reader->obj->debug_str_offsets.ptr + reader->current_str_offsets_base;
+    uint64_t off;
+    if (reader->format == 4) {
+        off = ((uint32_t *)p)[idx];
+    }
+    else {
+        off = ((uint64_t *)p)[idx];
+    }
+    return reader->obj->debug_str.ptr + off;
+}
+
+static bool
+debug_info_reader_read_addr_value_member(DebugInfoReader *reader, DebugInfoValue *v, int size)
+{
+    if (size == 4) {
+        set_uint_value(v, read_uint32(&reader->p));
+    } else if (size == 8) {
+        set_uint_value(v, read_uint64(&reader->p));
+    } else {
+        return false;
+    }
+    return true;
+}
+
+#define debug_info_reader_read_addr_value(reader, v, mem) \
+    if (!debug_info_reader_read_addr_value_member((reader), (v), (reader)->mem)) { \
+        kprintf("unknown " #mem ":%d", (reader)->mem); \
+        return false; \
+    }
+
+
+static bool
+debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoValue *v, FILE *errout)
 {
     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();
-        }
+        debug_info_reader_read_addr_value(reader, v, address_size);
         break;
       case DW_FORM_block2:
         v->size = read_uint16(&reader->p);
@@ -1141,13 +1249,12 @@ debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoVa
         set_uint_value(v, read_uleb128(reader));
         break;
       case DW_FORM_ref_addr:
-        if (reader->format == 4) {
-            set_uint_value(v, read_uint32(&reader->p));
-        } else if (reader->format == 8) {
-            set_uint_value(v, read_uint64(&reader->p));
+        if (reader->current_version <= 2) {
+            // DWARF Version 2 specifies that references have
+            // the same size as an address on the target system
+            debug_info_reader_read_addr_value(reader, v, address_size);
         } else {
-            fprintf(stderr,"unknown format:%d", reader->format);
-            abort();
+            debug_info_reader_read_addr_value(reader, v, format);
         }
         break;
       case DW_FORM_ref1:
@@ -1189,11 +1296,10 @@ debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoVa
         set_uint_value(v, 1);
         break;
       case DW_FORM_strx:
-        set_uint_value(v, uleb128(&reader->p));
+        set_cstr_value(v, resolve_strx(reader, uleb128(&reader->p)));
         break;
       case DW_FORM_addrx:
-        /* TODO: read .debug_addr */
-        set_uint_value(v, uleb128(&reader->p));
+        set_addr_idx_value(v, uleb128(&reader->p));
         break;
       case DW_FORM_ref_sup4:
         set_uint_value(v, read_uint32(&reader->p));
@@ -1208,8 +1314,7 @@ debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoVa
         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; */
+        set_cstrp_value(v, reader->obj->debug_line_str.ptr, read_uint(reader));
         break;
       case DW_FORM_ref_sig8:
         set_uint_value(v, read_uint64(&reader->p));
@@ -1227,43 +1332,51 @@ debug_info_reader_read_value(DebugInfoReader *reader, uint64_t form, DebugInfoVa
         set_uint_value(v, read_uint64(&reader->p));
         break;
       case DW_FORM_strx1:
-        set_uint_value(v, read_uint8(&reader->p));
+        set_cstr_value(v, resolve_strx(reader, read_uint8(&reader->p)));
         break;
       case DW_FORM_strx2:
-        set_uint_value(v, read_uint16(&reader->p));
+        set_cstr_value(v, resolve_strx(reader, read_uint16(&reader->p)));
         break;
       case DW_FORM_strx3:
-        set_uint_value(v, read_uint24(&reader->p));
+        set_cstr_value(v, resolve_strx(reader, read_uint24(&reader->p)));
         break;
       case DW_FORM_strx4:
-        set_uint_value(v, read_uint32(&reader->p));
+        set_cstr_value(v, resolve_strx(reader, read_uint32(&reader->p)));
         break;
       case DW_FORM_addrx1:
-        set_uint_value(v, read_uint8(&reader->p));
+        set_addr_idx_value(v, read_uint8(&reader->p));
         break;
       case DW_FORM_addrx2:
-        set_uint_value(v, read_uint16(&reader->p));
+        set_addr_idx_value(v, read_uint16(&reader->p));
         break;
       case DW_FORM_addrx3:
-        set_uint_value(v, read_uint24(&reader->p));
+        set_addr_idx_value(v, read_uint24(&reader->p));
         break;
       case DW_FORM_addrx4:
-        set_uint_value(v, read_uint32(&reader->p));
+        set_addr_idx_value(v, read_uint32(&reader->p));
+        break;
+      /* we have no support for actually reading the real values of these refs out
+       * of the .gnu_debugaltlink dwz-compressed debuginfo at the moment, but "read"
+       * them anyway so that we advance the reader by the right amount. */
+      case DW_FORM_GNU_ref_alt:
+      case DW_FORM_GNU_strp_alt:
+        read_uint(reader);
+        set_uint_value(v, 0);
         break;
       case 0:
         goto fail;
         break;
     }
-    return;
+    return true;
 
   fail:
-    fprintf(stderr, "%d: unsupported form: %#"PRIx64"\n", __LINE__, form);
-    exit(1);
+    kprintf("%d: unsupported form: %#"PRIx64"\n", __LINE__, form);
+    return false;
 }
 
 /* find abbrev in current compilation unit */
 static const char *
-di_find_abbrev(DebugInfoReader *reader, uint64_t abbrev_number)
+di_find_abbrev(DebugInfoReader *reader, uint64_t abbrev_number, FILE *errout)
 {
     const char *p;
     if (abbrev_number < ABBREV_TABLE_SIZE) {
@@ -1276,8 +1389,8 @@ di_find_abbrev(DebugInfoReader *reader, uint64_t abbrev_number)
     di_skip_die_attributes(&p);
     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);
+            kprintf("%d: Abbrev Number %"PRId64" not found\n",__LINE__, abbrev_number);
+            return NULL;
         }
         uleb128(&p); /* tag */
         p++; /* has_children */
@@ -1288,52 +1401,52 @@ di_find_abbrev(DebugInfoReader *reader, uint64_t abbrev_number)
 
 #if 0
 static void
-hexdump0(const unsigned char *p, size_t n)
+hexdump0(const unsigned char *p, size_t n, FILE *errout)
 {
     size_t i;
-    fprintf(stderr, "     0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F\n");
+    kprintf("     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, "%02" PRIdSIZE ": %02X ", i/16, p[i]);
+            kprintf("%02" PRIdSIZE ": %02X ", i/16, p[i]);
             break;
           case 15:
-            fprintf(stderr, "%02X\n", p[i]);
+            kprintf("%02X\n", p[i]);
             break;
           default:
-            fprintf(stderr, "%02X ", p[i]);
+            kprintf("%02X ", p[i]);
             break;
         }
     }
     if ((i & 15) != 15) {
-        fprintf(stderr, "\n");
+        kprintf("\n");
     }
 }
-#define hexdump(p,n) hexdump0((const unsigned char *)p, n)
+#define hexdump(p,n,e) hexdump0((const unsigned char *)p, n, e)
 
 static void
-div_inspect(DebugInfoValue *v)
+div_inspect(DebugInfoValue *v, FILE *errout)
 {
     switch (v->type) {
       case VAL_uint:
-        fprintf(stderr,"%d: type:%d size:%" PRIxSIZE " v:%"PRIx64"\n",__LINE__,v->type,v->size,v->as.uint64);
+        kprintf("%d: type:%d size:%" PRIxSIZE " v:%"PRIx64"\n",__LINE__,v->type,v->size,v->as.uint64);
         break;
       case VAL_int:
-        fprintf(stderr,"%d: type:%d size:%" PRIxSIZE " v:%"PRId64"\n",__LINE__,v->type,v->size,(int64_t)v->as.uint64);
+        kprintf("%d: type:%d size:%" PRIxSIZE " v:%"PRId64"\n",__LINE__,v->type,v->size,(int64_t)v->as.uint64);
         break;
       case VAL_cstr:
-        fprintf(stderr,"%d: type:%d size:%" PRIxSIZE " v:'%s'\n",__LINE__,v->type,v->size,v->as.ptr);
+        kprintf("%d: type:%d size:%" PRIxSIZE " v:'%s'\n",__LINE__,v->type,v->size,v->as.ptr);
         break;
       case VAL_data:
-        fprintf(stderr,"%d: type:%d size:%" PRIxSIZE " v:\n",__LINE__,v->type,v->size);
-        hexdump(v->as.ptr, 16);
+        kprintf("%d: type:%d size:%" PRIxSIZE " v:\n",__LINE__,v->type,v->size);
+        hexdump(v->as.ptr, 16, errout);
         break;
     }
 }
 #endif
 
 static DIE *
-di_read_die(DebugInfoReader *reader, DIE *die)
+di_read_die(DebugInfoReader *reader, DIE *die, FILE *errout)
 {
     uint64_t abbrev_number = uleb128(&reader->p);
     if (abbrev_number == 0) {
@@ -1341,7 +1454,7 @@ di_read_die(DebugInfoReader *reader, DIE *die)
         return NULL;
     }
 
-    reader->q = di_find_abbrev(reader, abbrev_number);
+    if (!(reader->q = di_find_abbrev(reader, abbrev_number, errout))) return NULL;
 
     die->pos = reader->p - reader->obj->debug_info.ptr - 1;
     die->tag = (int)uleb128(&reader->q); /* tag */
@@ -1353,27 +1466,109 @@ di_read_die(DebugInfoReader *reader, DIE *die)
 }
 
 static DebugInfoValue *
-di_read_record(DebugInfoReader *reader, DebugInfoValue *vp)
+di_read_record(DebugInfoReader *reader, DebugInfoValue *vp, FILE *errout)
 {
     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);
+    if (!debug_info_reader_read_value(reader, form, vp, errout)) return NULL;
     return vp;
 }
 
-static void
-di_skip_records(DebugInfoReader *reader)
+static bool
+di_skip_records(DebugInfoReader *reader, FILE *errout)
 {
     for (;;) {
-        DebugInfoValue v = {{}};
+        DebugInfoValue v = {{0}};
         uint64_t at = uleb128(&reader->q);
         uint64_t form = uleb128(&reader->q);
-        if (!at || !form) return;
-        debug_info_reader_read_value(reader, form, &v);
+        if (!at || !form) return true;
+        if (!debug_info_reader_read_value(reader, form, &v, errout)) return false;
+    }
+}
+
+typedef struct addr_header {
+    const char *ptr;
+    uint64_t unit_length;
+    uint8_t format;
+    uint8_t address_size;
+    /* uint8_t segment_selector_size; */
+} addr_header_t;
+
+static bool
+addr_header_init(obj_info_t *obj, addr_header_t *header, FILE *errout)
+{
+    const char *p = obj->debug_addr.ptr;
+
+    header->ptr = p;
+
+    if (!p) return true;
+
+    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;
+    }
+
+    p += 2; /* version */
+    header->address_size = *p++;
+    if (header->address_size != 4 && header->address_size != 8) {
+        kprintf("unknown address_size:%d", header->address_size);
+        return false;
+    }
+    p++; /* segment_selector_size */
+    return true;
+}
+
+static uint64_t
+read_addr(addr_header_t *header, uint64_t addr_base, uint64_t idx) {
+    if (header->address_size == 4) {
+        return ((uint32_t*)(header->ptr + addr_base))[idx];
+    }
+    else {
+        return ((uint64_t*)(header->ptr + addr_base))[idx];
+    }
+}
+
+typedef struct rnglists_header {
+    uint64_t unit_length;
+    uint8_t format;
+    uint8_t address_size;
+    uint32_t offset_entry_count;
+} rnglists_header_t;
+
+static bool
+rnglists_header_init(obj_info_t *obj, rnglists_header_t *header, FILE *errout)
+{
+    const char *p = obj->debug_rnglists.ptr;
+
+    if (!p) return true;
+
+    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;
     }
+
+    p += 2; /* version */
+    header->address_size = *p++;
+    if (header->address_size != 4 && header->address_size != 8) {
+        kprintf("unknown address_size:%d", header->address_size);
+        return false;
+    }
+    p++; /* segment_selector_size */
+    header->offset_entry_count = *(uint32_t *)p;
+    return true;
 }
 
 typedef struct {
@@ -1386,50 +1581,54 @@ typedef struct {
 } ranges_t;
 
 static void
-ranges_set(ranges_t *ptr, DebugInfoValue *v)
+ranges_set(ranges_t *ptr, DebugInfoValue *v, addr_header_t *addr_header, uint64_t addr_base)
 {
+    uint64_t n = 0;
+    if (v->type == VAL_uint) {
+        n = v->as.uint64;
+    }
+    else if (v->type == VAL_addr) {
+        n = read_addr(addr_header, addr_base, v->as.addr_idx);
+    }
     switch (v->at) {
       case DW_AT_low_pc:
-        ptr->low_pc = v->as.uint64;
+        ptr->low_pc = n;
         ptr->low_pc_set = true;
         break;
       case DW_AT_high_pc:
         if (v->form == DW_FORM_addr) {
-            ptr->high_pc = v->as.uint64;
+            ptr->high_pc = n;
         }
         else {
-            ptr->high_pc = ptr->low_pc + v->as.uint64;
+            ptr->high_pc = ptr->low_pc + n;
         }
         ptr->high_pc_set = true;
         break;
       case DW_AT_ranges:
-        ptr->ranges = v->as.uint64;
+        ptr->ranges = n;
         ptr->ranges_set = true;
         break;
     }
 }
 
 static uint64_t
-read_dw_form_addr(DebugInfoReader *reader, const char **ptr)
+read_dw_form_addr(DebugInfoReader *reader, const char **ptr, FILE *errout)
 {
     const char *p = *ptr;
     *ptr = p + reader->address_size;
     if (reader->address_size == 4) {
         return read_uint32(&p);
-    } else if (reader->address_size == 8) {
-        return read_uint64(&p);
     } else {
-        fprintf(stderr,"unknown address_size:%d", reader->address_size);
-        abort();
+        return read_uint64(&p);
     }
 }
 
 static uintptr_t
-ranges_include(DebugInfoReader *reader, ranges_t *ptr, uint64_t addr)
+ranges_include(DebugInfoReader *reader, ranges_t *ptr, uint64_t addr, rnglists_header_t *rnglists_header, FILE *errout)
 {
     if (ptr->high_pc_set) {
         if (ptr->ranges_set || !ptr->low_pc_set) {
-            exit(1);
+            return UINTPTR_MAX;
         }
         if (ptr->low_pc <= addr && addr <= ptr->high_pc) {
             return (uintptr_t)ptr->low_pc;
@@ -1440,8 +1639,21 @@ ranges_include(DebugInfoReader *reader, ranges_t *ptr, uint64_t addr)
         const char *p;
         uint64_t base = ptr->low_pc_set ? ptr->low_pc : reader->current_low_pc;
         bool base_valid = true;
-        if (reader->obj->debug_rnglists.ptr) {
-            p = reader->obj->debug_rnglists.ptr + ptr->ranges;
+        if (reader->current_version >= 5) {
+            if (rnglists_header->offset_entry_count == 0) {
+                // DW_FORM_sec_offset
+                p = reader->obj->debug_rnglists.ptr + ptr->ranges + reader->current_rnglists_base;
+            }
+            else {
+                // DW_FORM_rnglistx
+                const char *offset_array = reader->obj->debug_rnglists.ptr + reader->current_rnglists_base;
+                if (rnglists_header->format == 4) {
+                    p = offset_array + ((uint32_t *)offset_array)[ptr->ranges];
+                }
+                else {
+                    p = offset_array + ((uint64_t *)offset_array)[ptr->ranges];
+                }
+            }
             for (;;) {
                 uint8_t rle = read_uint8(&p);
                 uintptr_t from = 0, to = 0;
@@ -1465,15 +1677,15 @@ ranges_include(DebugInfoReader *reader, ranges_t *ptr, uint64_t addr)
                     to = (uintptr_t)base + uleb128(&p);
                     break;
                   case DW_RLE_base_address:
-                    base = read_dw_form_addr(reader, &p);
+                    base = read_dw_form_addr(reader, &p, errout);
                     base_valid = true;
                     break;
                   case DW_RLE_start_end:
-                    from = (uintptr_t)read_dw_form_addr(reader, &p);
-                    to = (uintptr_t)read_dw_form_addr(reader, &p);
+                    from = (uintptr_t)read_dw_form_addr(reader, &p, errout);
+                    to = (uintptr_t)read_dw_form_addr(reader, &p, errout);
                     break;
                   case DW_RLE_start_length:
-                    from = (uintptr_t)read_dw_form_addr(reader, &p);
+                    from = (uintptr_t)read_dw_form_addr(reader, &p, errout);
                     to = from + uleb128(&p);
                     break;
                 }
@@ -1481,7 +1693,7 @@ ranges_include(DebugInfoReader *reader, ranges_t *ptr, uint64_t addr)
                     return from;
                 }
             }
-            return false;
+            return 0;
         }
         p = reader->obj->debug_ranges.ptr + ptr->ranges;
         for (;;) {
@@ -1502,42 +1714,42 @@ ranges_include(DebugInfoReader *reader, ranges_t *ptr, uint64_t addr)
             return (uintptr_t)ptr->low_pc;
         }
     }
-    return false;
+    return 0;
 }
 
 #if 0
 static void
-ranges_inspect(DebugInfoReader *reader, ranges_t *ptr)
+ranges_inspect(DebugInfoReader *reader, ranges_t *ptr, FILE *errout)
 {
     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);
+            kprintf("low_pc_set:%d high_pc_set:%d ranges_set:%d\n",ptr->low_pc_set,ptr->high_pc_set,ptr->ranges_set);
+            return;
         }
-        fprintf(stderr,"low_pc:%"PRIx64" high_pc:%"PRIx64"\n",ptr->low_pc,ptr->high_pc);
+        kprintf("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);
+        kprintf("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);
+            kprintf("%"PRIx64"-%"PRIx64" ",ptr->low_pc+from,ptr->low_pc+to);
         }
-        fprintf(stderr,"\n");
+        kprintf("\n");
     }
     else if (ptr->low_pc_set) {
-        fprintf(stderr,"low_pc:%"PRIx64"\n",ptr->low_pc);
+        kprintf("low_pc:%"PRIx64"\n",ptr->low_pc);
     }
     else {
-        fprintf(stderr,"empty\n");
+        kprintf("empty\n");
     }
 }
 #endif
 
 static int
-di_read_cu(DebugInfoReader *reader)
+di_read_cu(DebugInfoReader *reader, FILE *errout)
 {
     uint64_t unit_length;
     uint16_t version;
@@ -1551,6 +1763,7 @@ di_read_cu(DebugInfoReader *reader)
     }
     reader->cu_end = reader->p + unit_length;
     version = read_uint16(&reader->p);
+    reader->current_version = version;
     if (version > 5) {
         return -1;
     }
@@ -1563,43 +1776,72 @@ di_read_cu(DebugInfoReader *reader)
         debug_abbrev_offset = read_uint(reader);
         reader->address_size = read_uint8(&reader->p);
     }
+    if (reader->address_size != 4 && reader->address_size != 8) {
+        kprintf("unknown address_size:%d", reader->address_size);
+        return -1;
+    }
     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 (di_read_debug_line_cu(reader, errout)) 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 (!di_read_die(reader, &die, errout)) continue;
 
         if (die.tag != DW_TAG_compile_unit) {
-            di_skip_records(reader);
+            if (!di_skip_records(reader, errout)) return -1;
             break;
         }
 
+        reader->current_str_offsets_base = 0;
+        reader->current_addr_base = 0;
+        reader->current_rnglists_base = 0;
+
+        DebugInfoValue low_pc = {{0}};
         /* enumerate abbrev */
         for (;;) {
-            DebugInfoValue v = {{}};
-            if (!di_read_record(reader, &v)) break;
+            DebugInfoValue v = {{0}};
+            if (!di_read_record(reader, &v, errout)) break;
             switch (v.at) {
               case DW_AT_low_pc:
-                reader->current_low_pc = v.as.uint64;
+                // clang may output DW_AT_addr_base after DW_AT_low_pc.
+                // We need to resolve the DW_FORM_addr* after DW_AT_addr_base is parsed.
+                low_pc = v;
+                break;
+              case DW_AT_str_offsets_base:
+                reader->current_str_offsets_base = v.as.uint64;
+                break;
+              case DW_AT_addr_base:
+                reader->current_addr_base = v.as.uint64;
+                break;
+              case DW_AT_rnglists_base:
+                reader->current_rnglists_base = v.as.uint64;
                 break;
             }
         }
+        // Resolve the DW_FORM_addr of DW_AT_low_pc
+        switch (low_pc.type) {
+            case VAL_uint:
+                reader->current_low_pc = low_pc.as.uint64;
+                break;
+            case VAL_addr:
+                {
+                    addr_header_t header = {0};
+                    if (!addr_header_init(reader->obj, &header, errout)) return -1;
+                    reader->current_low_pc = read_addr(&header, reader->current_addr_base, low_pc.as.addr_idx);
+                }
+                break;
+        }
     } while (0);
-#endif
+
     return 0;
 }
 
 static void
-read_abstract_origin(DebugInfoReader *reader, uint64_t form, uint64_t abstract_origin, line_info_t *line)
+read_abstract_origin(DebugInfoReader *reader, uint64_t form, uint64_t abstract_origin, line_info_t *line, FILE *errout)
 {
     const char *p = reader->p;
     const char *q = reader->q;
@@ -1624,12 +1866,12 @@ read_abstract_origin(DebugInfoReader *reader, uint64_t form, uint64_t abstract_o
       default:
         goto finish;
     }
-    if (!di_read_die(reader, &die)) goto finish;
+    if (!di_read_die(reader, &die, errout)) goto finish;
 
     /* enumerate abbrev */
     for (;;) {
-        DebugInfoValue v = {{}};
-        if (!di_read_record(reader, &v)) break;
+        DebugInfoValue v = {{0}};
+        if (!di_read_record(reader, &v, errout)) break;
         switch (v.at) {
           case DW_AT_name:
             line->sname = get_cstr_value(&v);
@@ -1643,36 +1885,44 @@ read_abstract_origin(DebugInfoReader *reader, uint64_t form, uint64_t abstract_o
     reader->level = level;
 }
 
-static void
+static bool
 debug_info_read(DebugInfoReader *reader, int num_traces, void **traces,
-         line_info_t *lines, int offset) {
+                line_info_t *lines, int offset, FILE *errout)
+{
+
+    addr_header_t addr_header = {0};
+    if (!addr_header_init(reader->obj, &addr_header, errout)) return false;
+
+    rnglists_header_t rnglists_header = {0};
+    if (!rnglists_header_init(reader->obj, &rnglists_header, errout)) return false;
+
     while (reader->p < reader->cu_end) {
         DIE die;
-        ranges_t ranges = {};
-        line_info_t line = {};
+        ranges_t ranges = {0};
+        line_info_t line = {0};
 
-        if (!di_read_die(reader, &die)) continue;
-        /* fprintf(stderr,"%d:%tx: <%d>\n",__LINE__,die.pos,reader->level,die.tag); */
+        if (!di_read_die(reader, &die, errout)) continue;
+        /* kprintf("%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);
+            if (!di_skip_records(reader, errout)) return false;
             continue;
         }
 
         /* enumerate abbrev */
         for (;;) {
-            DebugInfoValue v = {{}};
+            DebugInfoValue v = {{0}};
             /* 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); */
+            if (!di_read_record(reader, &v, errout)) break;
+            /* kprintf("\n%d:%tx: AT:%lx FORM:%lx\n",__LINE__,pos,v.at,v.form); */
+            /* div_inspect(&v, errout); */
             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);
+                fill_filename((int)v.as.uint64, reader->debug_line_format, reader->debug_line_version, reader->debug_line_directories, reader->debug_line_files, &line, reader->obj, errout);
                 break;
               case DW_AT_call_line:
                 line.line = (int)v.as.uint64;
@@ -1680,7 +1930,7 @@ debug_info_read(DebugInfoReader *reader, int num_traces, void **traces,
               case DW_AT_low_pc:
               case DW_AT_high_pc:
               case DW_AT_ranges:
-                ranges_set(&ranges, &v);
+                ranges_set(&ranges, &v, &addr_header, reader->current_addr_base);
                 break;
               case DW_AT_declaration:
                 goto skip_die;
@@ -1688,18 +1938,19 @@ debug_info_read(DebugInfoReader *reader, int num_traces, void **traces,
                 /* 1 or 3 */
                 break; /* goto skip_die; */
               case DW_AT_abstract_origin:
-                read_abstract_origin(reader, v.form, v.as.uint64, &line);
+                read_abstract_origin(reader, v.form, v.as.uint64, &line, errout);
                 break; /* goto skip_die; */
             }
         }
-        /* ranges_inspect(reader, &ranges); */
-        /* fprintf(stderr,"%d:%tx: %x ",__LINE__,diepos,die.tag); */
+        /* ranges_inspect(reader, &ranges, errout); */
+        /* kprintf("%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);
+            uintptr_t saddr = ranges_include(reader, &ranges, offset, &rnglists_header, errout);
+            if (saddr == UINTPTR_MAX) return false;
             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); */
+                /* kprintf("%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));
@@ -1716,6 +1967,58 @@ debug_info_read(DebugInfoReader *reader, int num_traces, void **traces,
             }
         }
     }
+    return true;
+}
+
+// This function parses the following attributes of Line Number Program Header in DWARF 5:
+//
+// * directory_entry_format_count
+// * directory_entry_format
+// * directories_count
+// * directories
+//
+// or
+//
+// * file_name_entry_format_count
+// * file_name_entry_format
+// * file_names_count
+// * file_names
+//
+// It records DW_LNCT_path and DW_LNCT_directory_index at the index "idx".
+static const char *
+parse_ver5_debug_line_header(const char *p, int idx, uint8_t format,
+                             obj_info_t *obj, const char **out_path,
+                             uint64_t *out_directory_index, FILE *errout)
+{
+    int i, j;
+    int entry_format_count = *(uint8_t *)p++;
+    const char *entry_format = p;
+
+    /* skip the part of entry_format */
+    for (i = 0; i < entry_format_count * 2; i++) uleb128(&p);
+
+    int entry_count = (int)uleb128(&p);
+
+    DebugInfoReader reader = {0};
+    debug_info_reader_init(&reader, obj);
+    reader.format = format;
+    reader.p = p;
+    for (j = 0; j < entry_count; j++) {
+        const char *format = entry_format;
+        for (i = 0; i < entry_format_count; i++) {
+            DebugInfoValue v = {{0}};
+            unsigned long dw_lnct = uleb128(&format);
+            unsigned long dw_form = uleb128(&format);
+            if (!debug_info_reader_read_value(&reader, dw_form, &v, errout)) return 0;
+            if (dw_lnct == 1 /* DW_LNCT_path */ && v.type == VAL_cstr && out_path)
+                *out_path = v.as.ptr + v.off;
+            if (dw_lnct == 2 /* DW_LNCT_directory_index */ && v.type == VAL_uint && out_directory_index)
+                *out_directory_index = v.as.uint64;
+        }
+        if (j == idx) return 0;
+    }
+
+    return reader.p;
 }
 
 #ifdef USE_ELF
@@ -1729,14 +2032,14 @@ uncompress_debug_section(ElfW(Shdr) *shdr, char *file, char **ptr)
     int ret = 0;
 
     if (chdr->ch_type != ELFCOMPRESS_ZLIB) {
-	/* unsupported compression type */
-	return 0;
+        /* unsupported compression type */
+        return 0;
     }
 
     *ptr = malloc(destsize);
     if (!*ptr) return 0;
     ret = uncompress((Bytef *)*ptr, &destsize,
-	    (const Bytef*)chdr + sizeof(ElfW(Chdr)),
+            (const Bytef*)chdr + sizeof(ElfW(Chdr)),
             shdr->sh_size - sizeof(ElfW(Chdr)));
     if (ret != Z_OK) goto fail;
     return destsize;
@@ -1751,7 +2054,7 @@ fail:
 /* 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)
+           obj_info_t **objp, line_info_t *lines, int offset, FILE *errout)
 {
     int i, j;
     char *shstr;
@@ -1769,40 +2072,40 @@ fill_lines(int num_traces, void **traces, int check_debuglink,
 
     fd = open(binary_filename, O_RDONLY);
     if (fd < 0) {
-	goto fail;
+        goto fail;
     }
     filesize = lseek(fd, 0, SEEK_END);
     if (filesize < 0) {
-	int e = errno;
-	close(fd);
-	kprintf("lseek: %s\n", strerror(e));
-	goto fail;
+        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;
+        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;
+        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;
+        /*
+         * Huh? Maybe filename was overridden by setproctitle() and
+         * it match non-elf file.
+         */
+        goto fail;
     }
     obj->mapped = file;
     obj->mapped_size = (size_t)filesize;
@@ -1814,40 +2117,43 @@ fill_lines(int num_traces, void **traces, int check_debuglink,
 
     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;
+        switch (shdr[i].sh_type) {
+          case SHT_STRTAB:
+            if (!strcmp(section_name, ".strtab")) {
+                strtab_shdr = shdr + i;
+            }
+            else if (!strcmp(section_name, ".dynstr")) {
+                dynstr_shdr = shdr + i;
+            }
+            break;
+          case SHT_SYMTAB:
+            /* if (!strcmp(section_name, ".symtab")) */
+            symtab_shdr = shdr + i;
+            break;
+          case SHT_DYNSYM:
+            /* if (!strcmp(section_name, ".dynsym")) */
+            dynsym_shdr = shdr + i;
+            break;
           case SHT_NOTE:
             if (!strcmp(section_name, ".note.gnu.build-id")) {
                 note_gnu_build_id = shdr + i;
             }
             break;
-	  case SHT_PROGBITS:
-	    if (!strcmp(section_name, ".gnu_debuglink")) {
-		gnu_debuglink_shdr = shdr + i;
-	    }
+          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_offsets",
+                    ".debug_addr",
                     ".debug_rnglists",
-                    ".debug_str"
+                    ".debug_str",
+                    ".debug_line_str"
                 };
 
                 for (j=0; j < DWARF_SECTION_COUNT; j++) {
@@ -1866,17 +2172,16 @@ fill_lines(int num_traces, void **traces, int check_debuglink,
                     break;
                 }
             }
-	    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)));
+    if (offset == 0) {
+        /* main executable */
+        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++) {
@@ -1893,14 +2198,14 @@ fill_lines(int num_traces, void **traces, int check_debuglink,
                 }
                 dlclose(handle);
             }
-	    if (ehdr->e_type == ET_EXEC) {
-		obj->base_addr = 0;
-	    }
-	    else {
-		/* PIE (position-independent executable) */
-		obj->base_addr = dladdr_fbase;
-	    }
-	}
+            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) {
@@ -1908,9 +2213,10 @@ fill_lines(int num_traces, void **traces, int check_debuglink,
         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);
+            /* kprintf("%d:%tx: CU[%d]\n", __LINE__, reader.p - reader.obj->debug_info.ptr, i++); */
+            if (di_read_cu(&reader, errout)) goto use_symtab;
+            if (!debug_info_read(&reader, num_traces, traces, lines, offset, errout))
+                goto use_symtab;
         }
     }
     else {
@@ -1945,27 +2251,27 @@ use_symtab:
     }
 
     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);
-	}
+        /* 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, errout);
+        }
         if (note_gnu_build_id && check_debuglink) {
             ElfW(Nhdr) *nhdr = (ElfW(Nhdr)*) (file + note_gnu_build_id->sh_offset);
             const char *build_id = (char *)(nhdr + 1) + nhdr->n_namesz;
             follow_debuglink_build_id(build_id, nhdr->n_descsz,
-			       num_traces, traces,
-			       objp, lines, offset);
+                               num_traces, traces,
+                               objp, lines, offset, errout);
         }
-	goto finish;
+        goto finish;
     }
 
     if (parse_debug_line(num_traces, traces,
             obj->debug_line.ptr,
             obj->debug_line.size,
-            obj, lines, offset) == -1)
+            obj, lines, offset, errout) == -1)
         goto fail;
 
 finish:
@@ -1977,7 +2283,7 @@ fail:
 /* 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)
+        obj_info_t **objp, line_info_t *lines, int offset, FILE *errout)
 {
 # ifdef __LP64__
 #  define LP(x) x##_64
@@ -2056,13 +2362,13 @@ fill_lines(int num_traces, void **traces, int check_debuglink,
         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); */
+        /* kprintf("%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); */
+            /* kprintf("%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;
@@ -2080,13 +2386,14 @@ fill_lines(int num_traces, void **traces, int check_debuglink,
         goto fail;
     }
     else {
-        kprintf("'%s' is not a "
 # ifdef __LP64__
-                "64"
+#   define bitsize "64"
 # else
-                "32"
+#   define bitsize "32"
 # endif
+        kprintf("'%s' is not a " bitsize
                 "-bit Mach-O file!\n",binary_filename);
+# undef bitsize
         close(fd);
         goto fail;
     }
@@ -2103,8 +2410,11 @@ found_mach_header:
                     "__debug_info",
                     "__debug_line",
                     "__debug_ranges",
+                    "__debug_str_offsets",
+                    "__debug_addr",
                     "__debug_rnglists",
-                    "__debug_str"
+                    "__debug_str",
+                    "__debug_line_str",
                 };
                 struct LP(segment_command) *scmd = (struct LP(segment_command) *)lcmd;
                 if (strcmp(scmd->segname, "__TEXT") == 0) {
@@ -2118,7 +2428,17 @@ found_mach_header:
                         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)
+                            if (strcmp(sect->sectname, debug_section_names[j]) != 0
+#ifdef __APPLE__
+                                    /* macOS clang 16 generates DWARF5, which have Mach-O
+                                     * section names that are limited to 16 characters,
+                                     * which causes sections with long names to be truncated
+                                     * and not match above.
+                                     * See: https://wiki.dwarfstd.org/Best_Practices.md#Mach-2d-O
+                                     */
+                                    && strncmp(sect->sectname, debug_section_names[j], 16) != 0
+#endif
+                                )
                                 continue;
 
                             s->ptr = file + sect->offset;
@@ -2175,15 +2495,16 @@ found_mach_header:
         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 (di_read_cu(&reader, errout)) goto fail;
+            if (!debug_info_read(&reader, num_traces, traces, lines, offset, errout))
+                goto fail;
         }
     }
 
     if (parse_debug_line(num_traces, traces,
             obj->debug_line.ptr,
             obj->debug_line.size,
-            obj, lines, offset) == -1)
+            obj, lines, offset, errout) == -1)
         goto fail;
 
     return dladdr_fbase;
@@ -2196,7 +2517,7 @@ fail:
 #if defined(__FreeBSD__) || defined(__DragonFly__)
 # include <sys/sysctl.h>
 #endif
-/* ssize_t main_exe_path(void)
+/* ssize_t main_exe_path(FILE *errout)
  *
  * store the path of the main executable to `binary_filename`,
  * and returns strlen(binary_filename).
@@ -2204,7 +2525,7 @@ fail:
  */
 #if defined(__linux__) || defined(__NetBSD__)
 static ssize_t
-main_exe_path(void)
+main_exe_path(FILE *errout)
 {
 # if defined(__linux__)
 #  define PROC_SELF_EXE "/proc/self/exe"
@@ -2218,21 +2539,21 @@ main_exe_path(void)
 }
 #elif defined(__FreeBSD__) || defined(__DragonFly__)
 static ssize_t
-main_exe_path(void)
+main_exe_path(FILE *errout)
 {
     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;
+        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)
+main_exe_path(FILE *errout)
 {
     int len = proc_pidpath(getpid(), binary_filename, PATH_MAX);
     if (len == 0) return 0;
@@ -2244,7 +2565,7 @@ main_exe_path(void)
 #endif
 
 static void
-print_line0(line_info_t *line, void *address)
+print_line0(line_info_t *line, void *address, FILE *errout)
 {
     uintptr_t addr = (uintptr_t)address;
     uintptr_t d = addr - line->saddr;
@@ -2285,16 +2606,16 @@ print_line0(line_info_t *line, void *address)
 }
 
 static void
-print_line(line_info_t *line, void *address)
+print_line(line_info_t *line, void *address, FILE *errout)
 {
-    print_line0(line, address);
+    print_line0(line, address, errout);
     if (line->next) {
-        print_line(line->next, NULL);
+        print_line(line->next, NULL, errout);
     }
 }
 
 void
-rb_dump_backtrace_with_lines(int num_traces, void **traces)
+rb_dump_backtrace_with_lines(int num_traces, void **traces, FILE *errout)
 {
     int i;
     /* async-signal unsafe */
@@ -2302,83 +2623,84 @@ rb_dump_backtrace_with_lines(int num_traces, void **traces)
     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;
-	    }
-	}
+    if ((len = main_exe_path(errout)) > 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, 0, errout);
+            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) {
-		    if (info.dli_fname) lines[i].path = info.dli_fname;
-		    if (info.dli_sname) 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;
-	    if (path) lines[i].path = path;
+        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) {
+                    if (info.dli_fname) lines[i].path = info.dli_fname;
+                    if (info.dli_sname) 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;
+            if (path) lines[i].path = path;
             if (info.dli_sname) {
                 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;
-	}
+            strlcpy(binary_filename, path, PATH_MAX);
+            if (fill_lines(num_traces, traces, 1, &obj, lines, i, errout) == (uintptr_t)-1)
+                break;
+        }
 next_line:
-	continue;
+        continue;
     }
 
     /* output */
     for (i = 0; i < num_traces; i++) {
-        print_line(&lines[i], traces[i]);
+        print_line(&lines[i], traces[i], errout);
 
-	/* FreeBSD's backtrace may show _start and so on */
-	if (lines[i].sname && strcmp("main", lines[i].sname) == 0)
-	    break;
+        /* 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;
+        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);
+        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;
@@ -2392,435 +2714,8 @@ next_line:
     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);
-}
+#undef kprintf
 
-/*
- * 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
index f09b665800..ff8e476b92 100644
--- a/addr2line.h
+++ b/addr2line.h
@@ -12,8 +12,10 @@
 
 #if (defined(USE_ELF) || defined(HAVE_MACH_O_LOADER_H))
 
+#include <stdio.h>
+
 void
-rb_dump_backtrace_with_lines(int num_traces, void **traces);
+rb_dump_backtrace_with_lines(int num_traces, void **traces, FILE *errout);
 
 #endif /* USE_ELF */
 
diff --git a/array.c b/array.c
index 0b4998a47c..b471823876 100644
--- a/array.c
+++ b/array.c
@@ -27,8 +27,10 @@
 #include "probes.h"
 #include "ruby/encoding.h"
 #include "ruby/st.h"
+#include "ruby/thread.h"
 #include "ruby/util.h"
-#include "transient_heap.h"
+#include "ruby/ractor.h"
+#include "vm_core.h"
 #include "builtin.h"
 
 #if !ARRAY_DEBUG
@@ -38,22 +40,18 @@
 #include "ruby_assert.h"
 
 VALUE rb_cArray;
+VALUE rb_cArray_empty_frozen;
 
 /* Flags of RArray
  *
+ * 0:   RARRAY_SHARED_FLAG (equal to ELTS_SHARED)
+ *          The array is shared. The buffer this array points to is owned by
+ *          another array (the shared root).
  * 1:   RARRAY_EMBED_FLAG
  *          The array is embedded (its contents follow the header, rather than
  *          being on a separately allocated buffer).
- * 2:   RARRAY_SHARED_FLAG (equal to ELTS_SHARED)
- *          The array is shared. The buffer this array points to is owned by
- *          another array (the shared root).
- * if USE_RVARGC
  * 3-9: RARRAY_EMBED_LEN
  *          The length of the array when RARRAY_EMBED_FLAG is set.
- * else
- * 3-4: RARRAY_EMBED_LEN
- *          The length of the array when RARRAY_EMBED_FLAG is set.
- * endif
  * 12:  RARRAY_SHARED_ROOT_FLAG
  *          The array is a shared root that does reference counting. The buffer
  *          this array points to is owned by this array but may be pointed to
@@ -63,8 +61,6 @@ VALUE rb_cArray;
  *                they cannot be modified. Not updating the reference count
  *                improves copy-on-write performance. Their reference count is
  *                assumed to be infinity.
- * 13:  RARRAY_TRANSIENT_FLAG
- *          The buffer of the array is allocated on the transient heap.
  * 14:  RARRAY_PTR_IN_USE_FLAG
  *          The buffer of the array is in use. This is only used during
  *          debugging.
@@ -84,48 +80,49 @@ should_be_T_ARRAY(VALUE ary)
     return RB_TYPE_P(ary, T_ARRAY);
 }
 
-#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)), \
+#define ARY_HEAP_PTR(a) (RUBY_ASSERT(!ARY_EMBED_P(a)), RARRAY(a)->as.heap.ptr)
+#define ARY_HEAP_LEN(a) (RUBY_ASSERT(!ARY_EMBED_P(a)), RARRAY(a)->as.heap.len)
+#define ARY_HEAP_CAPA(a) (RUBY_ASSERT(!ARY_EMBED_P(a)), RUBY_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_PTR(a) (RUBY_ASSERT(ARY_EMBED_P(a)), RARRAY(a)->as.ary)
 #define ARY_EMBED_LEN(a) \
-    (assert(ARY_EMBED_P(a)), \
+    (RUBY_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_HEAP_SIZE(a) (RUBY_ASSERT(!ARY_EMBED_P(a)), RUBY_ASSERT(ARY_OWNS_HEAP_P(a)), ARY_CAPA(a) * sizeof(VALUE))
 
-#define ARY_OWNS_HEAP_P(a) (assert(should_be_T_ARRAY((VALUE)(a))), \
+#define ARY_OWNS_HEAP_P(a) (RUBY_ASSERT(should_be_T_ARRAY((VALUE)(a))), \
                             !FL_TEST_RAW((a), RARRAY_SHARED_FLAG|RARRAY_EMBED_FLAG))
 
 #define FL_SET_EMBED(a) do { \
-    assert(!ARY_SHARED_P(a)); \
+    RUBY_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)); \
+    RUBY_ASSERT(!ARY_EMBED_P(ary)); \
     FL_SET((ary), RARRAY_SHARED_FLAG); \
 } while (0)
 #define FL_UNSET_SHARED(ary) FL_UNSET((ary), RARRAY_SHARED_FLAG)
 
+#define ARY_SET_PTR_FORCE(ary, p) \
+    (RARRAY(ary)->as.heap.ptr = (p))
 #define ARY_SET_PTR(ary, p) do { \
-    assert(!ARY_EMBED_P(ary)); \
-    assert(!OBJ_FROZEN(ary)); \
-    RARRAY(ary)->as.heap.ptr = (p); \
+    RUBY_ASSERT(!ARY_EMBED_P(ary)); \
+    RUBY_ASSERT(!OBJ_FROZEN(ary)); \
+    ARY_SET_PTR_FORCE(ary, p); \
 } while (0)
 #define ARY_SET_EMBED_LEN(ary, n) do { \
     long tmp_n = (n); \
-    assert(ARY_EMBED_P(ary)); \
+    RUBY_ASSERT(ARY_EMBED_P(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)); \
+    RUBY_ASSERT(!ARY_EMBED_P(ary)); \
     RARRAY(ary)->as.heap.len = (n); \
 } while (0)
 #define ARY_SET_LEN(ary, n) do { \
@@ -135,15 +132,15 @@ should_be_T_ARRAY(VALUE ary)
     else { \
         ARY_SET_HEAP_LEN((ary), (n)); \
     } \
-    assert(RARRAY_LEN(ary) == (n)); \
+    RUBY_ASSERT(RARRAY_LEN(ary) == (n)); \
 } while (0)
 #define ARY_INCREASE_PTR(ary, n) do  { \
-    assert(!ARY_EMBED_P(ary)); \
-    assert(!OBJ_FROZEN(ary)); \
+    RUBY_ASSERT(!ARY_EMBED_P(ary)); \
+    RUBY_ASSERT(!OBJ_FROZEN(ary)); \
     RARRAY(ary)->as.heap.ptr += (n); \
 } while (0)
 #define ARY_INCREASE_LEN(ary, n) do  { \
-    assert(!OBJ_FROZEN(ary)); \
+    RUBY_ASSERT(!OBJ_FROZEN(ary)); \
     if (ARY_EMBED_P(ary)) { \
         ARY_SET_EMBED_LEN((ary), RARRAY_LEN(ary)+(n)); \
     } \
@@ -154,42 +151,33 @@ should_be_T_ARRAY(VALUE ary)
 
 #define ARY_CAPA(ary) (ARY_EMBED_P(ary) ? ary_embed_capa(ary) : \
                        ARY_SHARED_ROOT_P(ary) ? RARRAY_LEN(ary) : ARY_HEAP_CAPA(ary))
+#define ARY_SET_CAPA_FORCE(ary, n) \
+    RARRAY(ary)->as.heap.aux.capa = (n);
 #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_SET_SHARED(ary, value) do { \
-    const VALUE _ary_ = (ary); \
-    const VALUE _value_ = (value); \
-    assert(!ARY_EMBED_P(_ary_)); \
-    assert(ARY_SHARED_P(_ary_)); \
-    assert(!OBJ_FROZEN(_ary_)); \
-    assert(ARY_SHARED_ROOT_P(_value_) || OBJ_FROZEN(_value_)); \
-    RB_OBJ_WRITE(_ary_, &RARRAY(_ary_)->as.heap.aux.shared_root, _value_); \
+    RUBY_ASSERT(!ARY_EMBED_P(ary)); \
+    RUBY_ASSERT(!ARY_SHARED_P(ary)); \
+    RUBY_ASSERT(!OBJ_FROZEN(ary)); \
+    ARY_SET_CAPA_FORCE(ary, n); \
 } while (0)
 
 #define ARY_SHARED_ROOT_OCCUPIED(ary) (!OBJ_FROZEN(ary) && ARY_SHARED_ROOT_REFCNT(ary) == 1)
 #define ARY_SET_SHARED_ROOT_REFCNT(ary, value) do { \
-    assert(ARY_SHARED_ROOT_P(ary)); \
-    assert(!OBJ_FROZEN(ary)); \
-    assert((value) >= 0); \
+    RUBY_ASSERT(ARY_SHARED_ROOT_P(ary)); \
+    RUBY_ASSERT(!OBJ_FROZEN(ary)); \
+    RUBY_ASSERT((value) >= 0); \
     RARRAY(ary)->as.heap.aux.capa = (value); \
 } while (0)
 #define FL_SET_SHARED_ROOT(ary) do { \
-    assert(!OBJ_FROZEN(ary)); \
-    assert(!ARY_EMBED_P(ary)); \
-    assert(!RARRAY_TRANSIENT_P(ary)); \
+    RUBY_ASSERT(!OBJ_FROZEN(ary)); \
+    RUBY_ASSERT(!ARY_EMBED_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));
+    RUBY_ASSERT(!ARY_SHARED_P(a));
+    RUBY_ASSERT(!OBJ_FROZEN(a));
 
     RARRAY_ASET(a, i, v);
 }
@@ -198,36 +186,37 @@ ARY_SET(VALUE a, long i, VALUE v)
 static long
 ary_embed_capa(VALUE ary)
 {
-#if USE_RVARGC
     size_t size = rb_gc_obj_slot_size(ary) - offsetof(struct RArray, as.ary);
-    assert(size % sizeof(VALUE) == 0);
+    RUBY_ASSERT(size % sizeof(VALUE) == 0);
     return size / sizeof(VALUE);
-#else
-    return RARRAY_EMBED_LEN_MAX;
-#endif
 }
 
 static size_t
 ary_embed_size(long capa)
 {
-    return offsetof(struct RArray, as.ary) + (sizeof(VALUE) * capa);
+    size_t size = offsetof(struct RArray, as.ary) + (sizeof(VALUE) * capa);
+    if (size < sizeof(struct RArray)) size = sizeof(struct RArray);
+    return size;
 }
 
 static bool
 ary_embeddable_p(long capa)
 {
-#if USE_RVARGC
     return rb_gc_size_allocatable_p(ary_embed_size(capa));
-#else
-    return capa <= RARRAY_EMBED_LEN_MAX;
-#endif
 }
 
 bool
 rb_ary_embeddable_p(VALUE ary)
 {
-    // if the array is shared or a shared root then it's not moveable
-    return !(ARY_SHARED_P(ary) || ARY_SHARED_ROOT_P(ary));
+    /* An array cannot be turned embeddable when the array is:
+     *  - Shared root: other objects may point to the buffer of this array
+     *    so we cannot make it embedded.
+     *  - Frozen: this array may also be a shared root without the shared root
+     *    flag.
+     *  - Shared: we don't want to re-embed an array that points to a shared
+     *    root (to save memory).
+     */
+    return !(ARY_SHARED_ROOT_P(ary) || OBJ_FROZEN(ary) || ARY_SHARED_P(ary));
 }
 
 size_t
@@ -242,7 +231,7 @@ rb_ary_size_as_embedded(VALUE ary)
         real_size = ary_embed_size(ARY_HEAP_CAPA(ary));
     }
     else {
-        real_size = sizeof(struct RString);
+        real_size = sizeof(struct RArray);
     }
     return real_size;
 }
@@ -254,25 +243,23 @@ rb_ary_size_as_embedded(VALUE ary)
 static VALUE
 ary_verify_(VALUE ary, const char *file, int line)
 {
-    assert(RB_TYPE_P(ary, T_ARRAY));
+    RUBY_ASSERT(RB_TYPE_P(ary, T_ARRAY));
 
     if (ARY_SHARED_P(ary)) {
         VALUE root = ARY_SHARED_ROOT(ary);
         const VALUE *ptr = ARY_HEAP_PTR(ary);
-        const VALUE *root_ptr = RARRAY_CONST_PTR_TRANSIENT(root);
+        const VALUE *root_ptr = RARRAY_CONST_PTR(root);
         long len = ARY_HEAP_LEN(ary), root_len = RARRAY_LEN(root);
-        assert(ARY_SHARED_ROOT_P(root) || OBJ_FROZEN(root));
-        assert(root_ptr <= ptr && ptr + len <= root_ptr + root_len);
+        RUBY_ASSERT(ARY_SHARED_ROOT_P(root) || OBJ_FROZEN(root));
+        RUBY_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) <= ary_embed_capa(ary));
+        RUBY_ASSERT(!ARY_SHARED_P(ary));
+        RUBY_ASSERT(RARRAY_LEN(ary) <= ary_embed_capa(ary));
     }
     else {
-#if 1
-        const VALUE *ptr = RARRAY_CONST_PTR_TRANSIENT(ary);
+        const VALUE *ptr = RARRAY_CONST_PTR(ary);
         long i, len = RARRAY_LEN(ary);
         volatile VALUE v;
         if (len > 1) len = 1; /* check only HEAD */
@@ -280,25 +267,10 @@ ary_verify_(VALUE ary, const char *file, int line)
             v = ptr[i]; /* access check */
         }
         v = v;
-#endif
     }
 
-#if USE_TRANSIENT_HEAP
-    if (RARRAY_TRANSIENT_P(ary)) {
-        assert(rb_transient_heap_managed_ptr_p(RARRAY_CONST_PTR_TRANSIENT(ary)));
-    }
-#endif
-
-    rb_transient_heap_verify();
-
     return ary;
 }
-
-void
-rb_ary_verify(VALUE ary)
-{
-    ary_verify(ary);
-}
 #else
 #define ary_verify(ary) ((void)0)
 #endif
@@ -309,7 +281,7 @@ 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);
+    return (VALUE *)RARRAY_CONST_PTR(ary);
 }
 
 void
@@ -331,7 +303,7 @@ rb_mem_clear(VALUE *mem, long size)
 static void
 ary_mem_clear(VALUE ary, long beg, long size)
 {
-    RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+    RARRAY_PTR_USE(ary, ptr, {
         rb_mem_clear(ptr + beg, size);
     });
 }
@@ -347,7 +319,7 @@ memfill(register VALUE *mem, register long size, register VALUE val)
 static void
 ary_memfill(VALUE ary, long beg, long size, VALUE val)
 {
-    RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+    RARRAY_PTR_USE(ary, ptr, {
         memfill(ptr + beg, size, val);
         RB_OBJ_WRITTEN(ary, Qundef, val);
     });
@@ -356,17 +328,17 @@ ary_memfill(VALUE ary, long beg, long size, VALUE 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));
+    RUBY_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, {
+        RARRAY_PTR_USE(ary, ptr, {
             MEMCPY(ptr+beg, argv, VALUE, argc);
         });
     }
     else {
         int i;
-        RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+        RARRAY_PTR_USE(ary, ptr, {
             for (i=0; i<argc; i++) {
                 RB_OBJ_WRITE(buff_owner_ary, &ptr[i+beg], argv[i]);
             }
@@ -381,158 +353,62 @@ ary_memcpy(VALUE ary, long beg, long argc, const VALUE *argv)
 }
 
 static VALUE *
-ary_heap_alloc(VALUE ary, size_t capa)
+ary_heap_alloc_buffer(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;
+    return ALLOC_N(VALUE, capa);
 }
 
 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);
-    }
+    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));
-    }
+    ary_heap_free_ptr(ary, ARY_HEAP_PTR(ary), ARY_HEAP_SIZE(ary));
 }
 
 static size_t
 ary_heap_realloc(VALUE ary, size_t new_capa)
 {
-    size_t alloc_capa = new_capa;
-    size_t old_capa = ARY_HEAP_CAPA(ary);
-
-    if (RARRAY_TRANSIENT_P(ary)) {
-        if (new_capa <= old_capa) {
-            /* do nothing */
-            alloc_capa = old_capa;
-        }
-        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);
-
-    return alloc_capa;
-}
-
-#if USE_TRANSIENT_HEAP
-static inline void
-rb_ary_transient_heap_evacuate_(VALUE ary, int transient, int promote)
-{
-    if (transient) {
-        assert(!ARY_SHARED_ROOT_P(ary));
-
-        VALUE *new_ptr;
-        const VALUE *old_ptr = ARY_HEAP_PTR(ary);
-        long capa = ARY_HEAP_CAPA(ary);
-
-        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;
-    }
-
+    RUBY_ASSERT(!OBJ_FROZEN(ary));
+    SIZED_REALLOC_N(RARRAY(ary)->as.heap.ptr, VALUE, new_capa, ARY_HEAP_CAPA(ary));
     ary_verify(ary);
-}
 
-void
-rb_ary_transient_heap_evacuate(VALUE ary, int promote)
-{
-    rb_ary_transient_heap_evacuate_(ary, RARRAY_TRANSIENT_P(ary), promote);
+    return new_capa;
 }
 
 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
-
-void
 rb_ary_make_embedded(VALUE ary)
 {
-    assert(rb_ary_embeddable_p(ary));
+    RUBY_ASSERT(rb_ary_embeddable_p(ary));
     if (!ARY_EMBED_P(ary)) {
         const VALUE *buf = ARY_HEAP_PTR(ary);
         long len = ARY_HEAP_LEN(ary);
-        bool was_transient = RARRAY_TRANSIENT_P(ary);
 
-        // FL_SET_EMBED also unsets the transient flag
         FL_SET_EMBED(ary);
         ARY_SET_EMBED_LEN(ary, len);
 
         MEMCPY((void *)ARY_EMBED_PTR(ary), (void *)buf, VALUE, len);
 
-        if (!was_transient) {
-            ary_heap_free_ptr(ary, buf, len * sizeof(VALUE));
-        }
+        ary_heap_free_ptr(ary, buf, len * sizeof(VALUE));
     }
 }
 
 static void
 ary_resize_capa(VALUE ary, long capacity)
 {
-    assert(RARRAY_LEN(ary) <= capacity);
-    assert(!OBJ_FROZEN(ary));
-    assert(!ARY_SHARED_P(ary));
+    RUBY_ASSERT(RARRAY_LEN(ary) <= capacity);
+    RUBY_ASSERT(!OBJ_FROZEN(ary));
+    RUBY_ASSERT(!ARY_SHARED_P(ary));
 
     if (capacity > ary_embed_capa(ary)) {
         size_t new_capa = capacity;
         if (ARY_EMBED_P(ary)) {
             long len = ARY_EMBED_LEN(ary);
-            VALUE *ptr = ary_heap_alloc(ary, capacity);
+            VALUE *ptr = ary_heap_alloc_buffer(capacity);
 
             MEMCPY(ptr, ARY_EMBED_PTR(ary), VALUE, len);
             FL_UNSET_EMBED(ary);
@@ -567,9 +443,12 @@ 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);
+    RUBY_ASSERT(!ARY_SHARED_P(ary));
+    RUBY_ASSERT(old_capa >= capacity);
+    if (old_capa > capacity) {
+        size_t new_capa = ary_heap_realloc(ary, capacity);
+        ARY_SET_CAPA(ary, new_capa);
+    }
 
     ary_verify(ary);
 }
@@ -627,7 +506,7 @@ rb_ary_increment_share(VALUE shared_root)
 {
     if (!OBJ_FROZEN(shared_root)) {
         long num = ARY_SHARED_ROOT_REFCNT(shared_root);
-        assert(num >= 0);
+        RUBY_ASSERT(num >= 0);
         ARY_SET_SHARED_ROOT_REFCNT(shared_root, num + 1);
     }
     return shared_root;
@@ -636,15 +515,22 @@ rb_ary_increment_share(VALUE shared_root)
 static void
 rb_ary_set_shared(VALUE ary, VALUE shared_root)
 {
+    RUBY_ASSERT(!ARY_EMBED_P(ary));
+    RUBY_ASSERT(!OBJ_FROZEN(ary));
+    RUBY_ASSERT(ARY_SHARED_ROOT_P(shared_root) || OBJ_FROZEN(shared_root));
+
     rb_ary_increment_share(shared_root);
     FL_SET_SHARED(ary);
+    RB_OBJ_WRITE(ary, &RARRAY(ary)->as.heap.aux.shared_root, shared_root);
+
     RB_DEBUG_COUNTER_INC(obj_ary_shared_create);
-    ARY_SET_SHARED(ary, shared_root);
 }
 
 static inline void
 rb_ary_modify_check(VALUE ary)
 {
+    RUBY_ASSERT(ruby_thread_has_gvl_p());
+
     rb_check_frozen(ary);
     ary_verify(ary);
 }
@@ -667,22 +553,22 @@ rb_ary_cancel_sharing(VALUE ary)
             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);
+            long shift = RARRAY_CONST_PTR(ary) - RARRAY_CONST_PTR(shared_root);
             FL_UNSET_SHARED(ary);
-            ARY_SET_PTR(ary, RARRAY_CONST_PTR_TRANSIENT(shared_root));
+            ARY_SET_PTR(ary, RARRAY_CONST_PTR(shared_root));
             ARY_SET_CAPA(ary, shared_len);
-            RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+            RARRAY_PTR_USE(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);
+            VALUE *ptr = ary_heap_alloc_buffer(len);
             MEMCPY(ptr, ARY_HEAP_PTR(ary), VALUE, len);
             rb_ary_unshare(ary);
-            ARY_SET_CAPA(ary, len);
-            ARY_SET_PTR(ary, ptr);
+            ARY_SET_CAPA_FORCE(ary, len);
+            ARY_SET_PTR_FORCE(ary, ptr);
         }
 
         rb_gc_writebarrier_remember(ary);
@@ -711,7 +597,7 @@ ary_ensure_room_for_push(VALUE ary, long add_len)
         if (new_len > ary_embed_capa(ary)) {
             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)) {
+                if (ARY_HEAP_PTR(ary) - RARRAY_CONST_PTR(shared_root) + new_len <= RARRAY_LEN(shared_root)) {
                     rb_ary_modify_check(ary);
 
                     ary_verify(ary);
@@ -747,21 +633,32 @@ ary_ensure_room_for_push(VALUE ary, long add_len)
 
 /*
  *  call-seq:
- *    array.freeze -> self
+ *    freeze -> self
  *
- *  Freezes +self+; returns +self+:
+ *  Freezes +self+ (if not already frozen); returns +self+:
  *
  *    a = []
  *    a.frozen? # => false
  *    a.freeze
  *    a.frozen? # => true
  *
- *  An attempt to modify a frozen \Array raises FrozenError.
+ *  No further changes may be made to +self+;
+ *  raises FrozenError if a change is attempted.
+ *
+ *  Related: Kernel#frozen?.
  */
 
 VALUE
 rb_ary_freeze(VALUE ary)
 {
+    RUBY_ASSERT(RB_TYPE_P(ary, T_ARRAY));
+
+    if (OBJ_FROZEN(ary)) return ary;
+
+    if (!ARY_EMBED_P(ary) && !ARY_SHARED_P(ary) && !ARY_SHARED_ROOT_P(ary)) {
+        ary_shrink_capa(ary);
+    }
+
     return rb_obj_freeze(ary);
 }
 
@@ -788,13 +685,10 @@ static VALUE
 ary_alloc_embed(VALUE klass, long capa)
 {
     size_t size = ary_embed_size(capa);
-    assert(rb_gc_size_allocatable_p(size));
-#if !USE_RVARGC
-    assert(size <= sizeof(struct RArray));
-#endif
-    RVARGC_NEWOBJ_OF(ary, struct RArray, klass,
+    RUBY_ASSERT(rb_gc_size_allocatable_p(size));
+    NEWOBJ_OF(ary, struct RArray, klass,
                      T_ARRAY | RARRAY_EMBED_FLAG | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0),
-                     size);
+                     size, 0);
     /* Created array is:
      *   FL_SET_EMBED((VALUE)ary);
      *   ARY_SET_EMBED_LEN((VALUE)ary, 0);
@@ -805,9 +699,14 @@ ary_alloc_embed(VALUE klass, long capa)
 static VALUE
 ary_alloc_heap(VALUE klass)
 {
-    RVARGC_NEWOBJ_OF(ary, struct RArray, klass,
+    NEWOBJ_OF(ary, struct RArray, klass,
                      T_ARRAY | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0),
-                     sizeof(struct RArray));
+                     sizeof(struct RArray), 0);
+
+    ary->as.heap.len = 0;
+    ary->as.heap.aux.capa = 0;
+    ary->as.heap.ptr = NULL;
+
     return (VALUE)ary;
 }
 
@@ -821,7 +720,9 @@ empty_ary_alloc(VALUE klass)
 static VALUE
 ary_new(VALUE klass, long capa)
 {
-    VALUE ary,*ptr;
+    RUBY_ASSERT(ruby_thread_has_gvl_p());
+
+    VALUE ary;
 
     if (capa < 0) {
         rb_raise(rb_eArgError, "negative array size (or size too big)");
@@ -838,10 +739,9 @@ ary_new(VALUE klass, long capa)
     else {
         ary = ary_alloc_heap(klass);
         ARY_SET_CAPA(ary, capa);
-        assert(!ARY_EMBED_P(ary));
+        RUBY_ASSERT(!ARY_EMBED_P(ary));
 
-        ptr = ary_heap_alloc(ary, capa);
-        ARY_SET_PTR(ary, ptr);
+        ARY_SET_PTR(ary, ary_heap_alloc_buffer(capa));
         ARY_SET_HEAP_LEN(ary, 0);
     }
 
@@ -879,7 +779,7 @@ VALUE
     return ary;
 }
 
-MJIT_FUNC_EXPORTED VALUE
+VALUE
 rb_ary_tmp_new_from_values(VALUE klass, long n, const VALUE *elts)
 {
     VALUE ary;
@@ -903,13 +803,10 @@ static VALUE
 ec_ary_alloc_embed(rb_execution_context_t *ec, VALUE klass, long capa)
 {
     size_t size = ary_embed_size(capa);
-    assert(rb_gc_size_allocatable_p(size));
-#if !USE_RVARGC
-    assert(size <= sizeof(struct RArray));
-#endif
-    RB_RVARGC_EC_NEWOBJ_OF(ec, ary, struct RArray, klass,
-                           T_ARRAY | RARRAY_EMBED_FLAG | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0),
-                           size);
+    RUBY_ASSERT(rb_gc_size_allocatable_p(size));
+    NEWOBJ_OF(ary, struct RArray, klass,
+            T_ARRAY | RARRAY_EMBED_FLAG | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0),
+            size, ec);
     /* Created array is:
      *   FL_SET_EMBED((VALUE)ary);
      *   ARY_SET_EMBED_LEN((VALUE)ary, 0);
@@ -920,16 +817,21 @@ ec_ary_alloc_embed(rb_execution_context_t *ec, VALUE klass, long capa)
 static VALUE
 ec_ary_alloc_heap(rb_execution_context_t *ec, VALUE klass)
 {
-    RB_RVARGC_EC_NEWOBJ_OF(ec, ary, struct RArray, klass,
-                           T_ARRAY | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0),
-                           sizeof(struct RArray));
+    NEWOBJ_OF(ary, struct RArray, klass,
+            T_ARRAY | (RGENGC_WB_PROTECTED_ARRAY ? FL_WB_PROTECTED : 0),
+            sizeof(struct RArray), ec);
+
+    ary->as.heap.len = 0;
+    ary->as.heap.aux.capa = 0;
+    ary->as.heap.ptr = NULL;
+
     return (VALUE)ary;
 }
 
 static VALUE
 ec_ary_new(rb_execution_context_t *ec, VALUE klass, long capa)
 {
-    VALUE ary,*ptr;
+    VALUE ary;
 
     if (capa < 0) {
         rb_raise(rb_eArgError, "negative array size (or size too big)");
@@ -946,10 +848,9 @@ ec_ary_new(rb_execution_context_t *ec, VALUE klass, long capa)
     else {
         ary = ec_ary_alloc_heap(ec, klass);
         ARY_SET_CAPA(ary, capa);
-        assert(!ARY_EMBED_P(ary));
+        RUBY_ASSERT(!ARY_EMBED_P(ary));
 
-        ptr = ary_heap_alloc(ary, capa);
-        ARY_SET_PTR(ary, ptr);
+        ARY_SET_PTR(ary, ary_heap_alloc_buffer(capa));
         ARY_SET_HEAP_LEN(ary, 0);
     }
 
@@ -974,7 +875,6 @@ VALUE
 rb_ary_hidden_new(long capa)
 {
     VALUE ary = ary_new(0, capa);
-    rb_ary_transient_heap_evacuate(ary, TRUE);
     return ary;
 }
 
@@ -997,13 +897,8 @@ rb_ary_free(VALUE 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);
-        }
+        RB_DEBUG_COUNTER_INC(obj_ary_ptr);
+        ary_heap_free(ary);
     }
     else {
         RB_DEBUG_COUNTER_INC(obj_ary_embed);
@@ -1017,7 +912,32 @@ rb_ary_free(VALUE ary)
     }
 }
 
-RUBY_FUNC_EXPORTED size_t
+static VALUE fake_ary_flags;
+
+static VALUE
+init_fake_ary_flags(void)
+{
+    struct RArray fake_ary = {0};
+    fake_ary.basic.flags = T_ARRAY;
+    VALUE ary = (VALUE)&fake_ary;
+    rb_ary_freeze(ary);
+    return fake_ary.basic.flags;
+}
+
+VALUE
+rb_setup_fake_ary(struct RArray *fake_ary, const VALUE *list, long len)
+{
+    fake_ary->basic.flags = fake_ary_flags;
+    RBASIC_CLEAR_CLASS((VALUE)fake_ary);
+
+    // bypass frozen checks
+    fake_ary->as.heap.ptr = list;
+    fake_ary->as.heap.len = len;
+    fake_ary->as.heap.aux.capa = len;
+    return (VALUE)fake_ary;
+}
+
+size_t
 rb_ary_memsize(VALUE ary)
 {
     if (ARY_OWNS_HEAP_P(ary)) {
@@ -1031,7 +951,6 @@ rb_ary_memsize(VALUE ary)
 static VALUE
 ary_make_shared(VALUE ary)
 {
-    assert(USE_RVARGC || !ARY_EMBED_P(ary));
     ary_verify(ary);
 
     if (ARY_SHARED_P(ary)) {
@@ -1041,15 +960,9 @@ ary_make_shared(VALUE ary)
         return ary;
     }
     else if (OBJ_FROZEN(ary)) {
-        if (!ARY_EMBED_P(ary)) {
-            rb_ary_transient_heap_evacuate(ary, TRUE);
-            ary_shrink_capa(ary);
-        }
         return ary;
     }
     else {
-        rb_ary_transient_heap_evacuate(ary, TRUE);
-
         long capa = ARY_CAPA(ary);
         long len = RARRAY_LEN(ary);
 
@@ -1059,26 +972,21 @@ ary_make_shared(VALUE ary)
         FL_SET_SHARED_ROOT(shared);
 
         if (ARY_EMBED_P(ary)) {
-            /* Cannot use ary_heap_alloc because we don't want to allocate
-             * on the transient heap. */
-            VALUE *ptr = ALLOC_N(VALUE, capa);
+            VALUE *ptr = ary_heap_alloc_buffer(capa);
             ARY_SET_PTR(shared, ptr);
-            ary_memcpy(shared, 0, len, RARRAY_PTR(ary));
+            ary_memcpy(shared, 0, len, RARRAY_CONST_PTR(ary));
 
             FL_UNSET_EMBED(ary);
             ARY_SET_HEAP_LEN(ary, len);
             ARY_SET_PTR(ary, ptr);
         }
         else {
-            ARY_SET_PTR(shared, RARRAY_PTR(ary));
+            ARY_SET_PTR(shared, RARRAY_CONST_PTR(ary));
         }
 
         ARY_SET_LEN(shared, capa);
         ary_mem_clear(shared, len, capa - len);
-        ARY_SET_SHARED_ROOT_REFCNT(shared, 1);
-        FL_SET_SHARED(ary);
-        RB_DEBUG_COUNTER_INC(obj_ary_shared_create);
-        ARY_SET_SHARED(ary, shared);
+        rb_ary_set_shared(ary, shared);
 
         ary_verify(shared);
         ary_verify(ary);
@@ -1094,9 +1002,9 @@ ary_make_substitution(VALUE ary)
 
     if (ary_embeddable_p(len)) {
         VALUE subst = rb_ary_new_capa(len);
-        assert(ARY_EMBED_P(subst));
+        RUBY_ASSERT(ARY_EMBED_P(subst));
 
-        ary_memcpy(subst, 0, len, RARRAY_CONST_PTR_TRANSIENT(ary));
+        ary_memcpy(subst, 0, len, RARRAY_CONST_PTR(ary));
         ARY_SET_EMBED_LEN(subst, len);
         return subst;
     }
@@ -1124,7 +1032,7 @@ rb_check_array_type(VALUE ary)
     return rb_check_convert_type_with_id(ary, T_ARRAY, "Array", idTo_ary);
 }
 
-MJIT_FUNC_EXPORTED VALUE
+VALUE
 rb_check_to_array(VALUE ary)
 {
     return rb_check_convert_type_with_id(ary, T_ARRAY, "Array", idTo_a);
@@ -1140,14 +1048,18 @@ rb_to_array(VALUE ary)
  *  call-seq:
  *    Array.try_convert(object) -> object, new_array, or nil
  *
- *  If +object+ is an \Array object, returns +object+.
+ *  Attempts to return an array, based on the given +object+.
  *
- *  Otherwise if +object+ responds to <tt>:to_ary</tt>,
- *  calls <tt>object.to_ary</tt> and returns the result.
+ *  If +object+ is an array, returns +object+.
  *
- *  Returns +nil+ if +object+ does not respond to <tt>:to_ary</tt>
+ *  Otherwise if +object+ responds to <tt>:to_ary</tt>.
+ *  calls <tt>object.to_ary</tt>:
+ *  if the return value is an array or +nil+, returns that value;
+ *  if not, raises TypeError.
  *
- *  Raises an exception unless <tt>object.to_ary</tt> returns an \Array object.
+ *  Otherwise returns +nil+.
+ *
+ *  Related: see {Methods for Creating an Array}[rdoc-ref:Array@Methods+for+Creating+an+Array].
  */
 
 static VALUE
@@ -1184,48 +1096,51 @@ rb_ary_s_new(int argc, VALUE *argv, VALUE klass)
  *  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
+ *    Array.new(size, default_value = nil) -> new_array
+ *    Array.new(size = 0) {|index| ... } -> new_array
  *
- *  Returns a new \Array.
+ *  Returns a new array.
  *
- *  With no block and no arguments, returns a new empty \Array object.
+ *  With no block and no argument given, returns a new empty array:
  *
- *  With no block and a single \Array argument +array+,
- *  returns a new \Array formed from +array+:
+ *    Array.new # => []
  *
- *    a = Array.new([:foo, 'bar', 2])
- *    a.class # => Array
- *    a # => [:foo, "bar", 2]
+ *  With no block and array argument given, returns a new array with the same elements:
+ *
+ *    Array.new([:foo, 'bar', 2]) # => [: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+:
+ *  With no block and integer argument given, returns a new array containing
+ *  that many instances of the given +default_value+:
  *
- *    a = Array.new(3)
- *    a # => [nil, nil, nil]
+ *    Array.new(0)    # => []
+ *    Array.new(3)    # => [nil, nil, nil]
+ *    Array.new(2, 3) # => [3, 3]
  *
- *  With no block and arguments +size+ and +default_value+,
- *  returns an \Array of the given size;
- *  each element is that same +default_value+:
+ *  With a block given, returns an array of the given +size+;
+ *  calls the block with each +index+ in the range <tt>(0...size)</tt>;
+ *  the element at that +index+ in the returned array is the blocks return value:
  *
- *    a = Array.new(3, 'x')
- *    a # => ['x', 'x', 'x']
+ *    Array.new(3)  {|index| "Element #{index}" } # => ["Element 0", "Element 1", "Element 2"]
  *
- *  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 common pitfall for new Rubyists is providing an expression as +default_value+:
  *
- *    a = Array.new(3) {|index| "Element #{index}" }
- *    a # => ["Element 0", "Element 1", "Element 2"]
+ *    array = Array.new(2, {})
+ *    array # => [{}, {}]
+ *    array[0][:a] = 1
+ *    array # => [{a: 1}, {a: 1}], as array[0] and array[1] are same object
  *
- *  Raises ArgumentError if +size+ is negative.
+ *  If you want the elements of the array to be distinct, you should pass a block:
  *
- *  With a block and no argument,
- *  or a single argument +0+,
- *  ignores the block and returns a new empty \Array.
+ *    array = Array.new(2) { {} }
+ *    array # => [{}, {}]
+ *    array[0][:a] = 1
+ *    array # => [{a: 1}, {}], as array[0] and array[1] are different objects
+ *
+ *  Raises TypeError if the first argument is not either an array
+ *  or an {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects]).
+ *  Raises ArgumentError if the first argument is a negative integer.
+ *
+ *  Related: see {Methods for Creating an Array}[rdoc-ref:Array@Methods+for+Creating+an+Array].
  */
 
 static VALUE
@@ -1237,8 +1152,8 @@ rb_ary_initialize(int argc, VALUE *argv, VALUE ary)
     rb_ary_modify(ary);
     if (argc == 0) {
         rb_ary_reset(ary);
-        assert(ARY_EMBED_P(ary));
-        assert(ARY_EMBED_LEN(ary) == 0);
+        RUBY_ASSERT(ARY_EMBED_P(ary));
+        RUBY_ASSERT(ARY_EMBED_LEN(ary) == 0);
         if (rb_block_given_p()) {
             rb_warning("given block not used");
         }
@@ -1283,11 +1198,13 @@ rb_ary_initialize(int argc, VALUE *argv, VALUE ary)
 }
 
 /*
- * Returns a new array populated with the given objects.
+ * Returns a new array, populated with the given objects:
+ *
+ *   Array[1, 'a', /^A/]    # => [1, "a", /^A/]
+ *   Array[]                # => []
+ *   Array.[](1, 'a', /^A/) # => [1, "a", /^A/]
  *
- *   Array.[]( 1, 'a', /^A/)  # => [1, "a", /^A/]
- *   Array[ 1, 'a', /^A/ ]    # => [1, "a", /^A/]
- *   [ 1, 'a', /^A/ ]         # => [1, "a", /^A/]
+ * Related: see {Methods for Creating an Array}[rdoc-ref:Array@Methods+for+Creating+an+Array].
  */
 
 static VALUE
@@ -1335,25 +1252,26 @@ rb_ary_store(VALUE ary, long idx, VALUE 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));
+    RUBY_ASSERT(offset >= 0);
+    RUBY_ASSERT(len >= 0);
+    RUBY_ASSERT(offset+len <= RARRAY_LEN(ary));
 
-    const size_t rarray_embed_capa_max = (sizeof(struct RArray) - offsetof(struct RArray, as.ary)) / sizeof(VALUE);
-
-    if ((size_t)len <= rarray_embed_capa_max && ary_embeddable_p(len)) {
-        VALUE result = ary_alloc_embed(klass, len);
-        ary_memcpy(result, 0, len, RARRAY_CONST_PTR_TRANSIENT(ary) + offset);
+    VALUE result = ary_alloc_heap(klass);
+    size_t embed_capa = ary_embed_capa(result);
+    if ((size_t)len <= embed_capa) {
+        FL_SET_EMBED(result);
+        ary_memcpy(result, 0, len, RARRAY_CONST_PTR(ary) + offset);
         ARY_SET_EMBED_LEN(result, len);
-        return result;
     }
     else {
         VALUE shared = ary_make_shared(ary);
 
-        VALUE result = ary_alloc_heap(klass);
-        assert(!ARY_EMBED_P(result));
+        /* The ary_make_shared call may allocate, which can trigger a GC
+         * compaction. This can cause the array to be embedded because it has
+         * a length of 0. */
+        FL_UNSET_EMBED(result);
 
-        ARY_SET_PTR(result, RARRAY_CONST_PTR_TRANSIENT(ary));
+        ARY_SET_PTR(result, RARRAY_CONST_PTR(ary));
         ARY_SET_LEN(result, RARRAY_LEN(ary));
         rb_ary_set_shared(result, shared);
 
@@ -1361,25 +1279,27 @@ ary_make_partial(VALUE ary, VALUE klass, long offset, long len)
         ARY_SET_LEN(result, len);
 
         ary_verify(shared);
-        ary_verify(result);
-        return result;
     }
+
+    ary_verify(result);
+    return result;
 }
 
 static VALUE
 ary_make_partial_step(VALUE ary, VALUE klass, long offset, long len, long step)
 {
-    assert(offset >= 0);
-    assert(len >= 0);
-    assert(offset+len <= RARRAY_LEN(ary));
-    assert(step != 0);
+    RUBY_ASSERT(offset >= 0);
+    RUBY_ASSERT(len >= 0);
+    RUBY_ASSERT(offset+len <= RARRAY_LEN(ary));
+    RUBY_ASSERT(step != 0);
 
-    const VALUE *values = RARRAY_CONST_PTR_TRANSIENT(ary);
     const long orig_len = len;
 
     if (step > 0 && step >= len) {
         VALUE result = ary_new(klass, 1);
         VALUE *ptr = (VALUE *)ARY_EMBED_PTR(result);
+        const VALUE *values = RARRAY_CONST_PTR(ary);
+
         RB_OBJ_WRITE(result, ptr, values[offset]);
         ARY_SET_EMBED_LEN(result, 1);
         return result;
@@ -1397,6 +1317,8 @@ ary_make_partial_step(VALUE ary, VALUE klass, long offset, long len, long step)
     VALUE result = ary_new(klass, len);
     if (ARY_EMBED_P(result)) {
         VALUE *ptr = (VALUE *)ARY_EMBED_PTR(result);
+        const VALUE *values = RARRAY_CONST_PTR(ary);
+
         for (i = 0; i < len; ++i) {
             RB_OBJ_WRITE(result, ptr+i, values[j]);
             j += step;
@@ -1404,7 +1326,9 @@ ary_make_partial_step(VALUE ary, VALUE klass, long offset, long len, long step)
         ARY_SET_EMBED_LEN(result, len);
     }
     else {
-        RARRAY_PTR_USE_TRANSIENT(result, ptr, {
+        const VALUE *values = RARRAY_CONST_PTR(ary);
+
+        RARRAY_PTR_USE(result, ptr, {
             for (i = 0; i < len; ++i) {
                 RB_OBJ_WRITE(result, ptr+i, values[j]);
                 j += step;
@@ -1429,20 +1353,11 @@ enum ary_take_pos_flags
 };
 
 static VALUE
-ary_take_first_or_last(int argc, const VALUE *argv, VALUE ary, enum ary_take_pos_flags last)
+ary_take_first_or_last_n(VALUE ary, long n, enum ary_take_pos_flags last)
 {
-    long n;
-    long len;
+    long len = RARRAY_LEN(ary);
     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;
     }
@@ -1455,21 +1370,30 @@ ary_take_first_or_last(int argc, const VALUE *argv, VALUE ary, enum ary_take_pos
     return ary_make_partial(ary, rb_cArray, offset, n);
 }
 
+static VALUE
+ary_take_first_or_last(int argc, const VALUE *argv, VALUE ary, enum ary_take_pos_flags last)
+{
+    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);
+    return ary_take_first_or_last_n(ary, NUM2LONG(argv[0]), last);
+}
+
 /*
  *  call-seq:
- *    array << object -> self
+ *    self << object -> self
  *
- *  Appends +object+ to +self+; returns +self+:
+ *  Appends +object+ as the last element in +self+; returns +self+:
  *
- *    a = [:foo, 'bar', 2]
- *    a << :baz # => [:foo, "bar", 2, :baz]
+ *    [:foo, 'bar', 2] << :baz # => [:foo, "bar", 2, :baz]
  *
- *  Appends +object+ as one element, even if it is another \Array:
+ *  Appends +object+ as a single element, even if it is another array:
  *
- *    a = [:foo, 'bar', 2]
- *    a1 = a << [3, 4]
- *    a1 # => [:foo, "bar", 2, [3, 4]]
+ *    [:foo, 'bar', 2] << [3, 4] # => [:foo, "bar", 2, [3, 4]]
  *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 VALUE
@@ -1477,7 +1401,7 @@ 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, {
+    RARRAY_PTR_USE(ary, ptr, {
         RB_OBJ_WRITE(target_ary, &ptr[idx], item);
     });
     ARY_SET_LEN(ary, idx + 1);
@@ -1497,24 +1421,20 @@ rb_ary_cat(VALUE ary, const VALUE *argv, long len)
 
 /*
  *  call-seq:
- *    array.push(*objects) -> self
- *
- *  Appends trailing elements.
+ *    push(*objects) -> self
+ *    append(*objects) -> self
  *
- *  Appends each argument in +objects+ to +self+;  returns +self+:
+ *  Appends each argument in +objects+ to +self+; returns +self+:
  *
- *    a = [:foo, 'bar', 2]
- *    a.push(:baz, :bat) # => [:foo, "bar", 2, :baz, :bat]
+ *    a = [:foo, 'bar', 2] # => [:foo, "bar", 2]
+ *    a.push(:baz, :bat)   # => [:foo, "bar", 2, :baz, :bat]
  *
- *  Appends each argument as one element, even if it is another \Array:
+ *  Appends each argument as a single 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]]
+ *    a = [:foo, 'bar', 2]               # => [:foo, "bar", 2]
+      a.push([:baz, :bat], [:bam, :bad]) # => [:foo, "bar", 2, [:baz, :bat], [:bam, :bad]]
  *
- *  Array#append is an alias for Array#push.
- *
- *  Related: #pop, #shift, #unshift.
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 static VALUE
@@ -1536,41 +1456,42 @@ rb_ary_pop(VALUE ary)
     {
         ary_resize_capa(ary, n * 2);
     }
-    --n;
-    ARY_SET_LEN(ary, n);
+
+    VALUE obj = RARRAY_AREF(ary, n - 1);
+
+    ARY_SET_LEN(ary, n - 1);
     ary_verify(ary);
-    return RARRAY_AREF(ary, n);
+    return obj;
 }
 
 /*
  *  call-seq:
- *    array.pop -> object or nil
- *    array.pop(n) -> new_array
+ *    pop -> object or nil
+ *    pop(count) -> new_array
  *
- *  Removes and returns trailing elements.
+ *  Removes and returns trailing elements of +self+.
  *
- *  When no argument is given and +self+ is not empty,
- *  removes and returns the last element:
+ *  With no argument given, removes and returns the last element, if available;
+ *  otherwise returns +nil+:
  *
  *    a = [:foo, 'bar', 2]
- *    a.pop # => 2
- *    a # => [:foo, "bar"]
- *
- *  Returns +nil+ if the array is empty.
+ *    a.pop  # => 2
+ *    a      # => [:foo, "bar"]
+ *    [].pop # => nil
  *
- *  When a non-negative \Integer argument +n+ is given and is in range,
+ *  With non-negative integer argument +count+ given,
+ *  returns a new array containing the trailing +count+ elements of +self+, as available:
  *
- *  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]
  *
  *    a = [:foo, 'bar', 2]
  *    a.pop(50) # => [:foo, "bar", 2]
+ *    a         # => []
  *
- *  Related: #push, #shift, #unshift.
+ *  Related: Array#push;
+ *  see also {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 static VALUE
@@ -1609,35 +1530,40 @@ rb_ary_shift(VALUE ary)
 
 /*
  *  call-seq:
- *     array.shift -> object or nil
- *     array.shift(n) -> new_array
- *
- *  Removes and returns leading elements.
+ *    shift -> object or nil
+ *    shift(count) -> new_array or nil
  *
- *  When no argument is given, removes and returns the first element:
+ *  Removes and returns leading elements from +self+.
  *
- *    a = [:foo, 'bar', 2]
- *    a.shift # => :foo
- *    a # => ['bar', 2]
+ *  With no argument, removes and returns one element, if available,
+ *  or +nil+ otherwise:
  *
- *  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 = [0, 1, 2, 3]
+ *    a.shift  # => 0
+ *    a        # => [1, 2, 3]
+ *    [].shift # => nil
  *
- *    a = [:foo, 'bar', 2]
- *    a.shift(2) # => [:foo, 'bar']
- *    a # => [2]
+ *  With non-negative numeric argument +count+ given,
+ *  removes and returns the first +count+ elements:
  *
- *  If +n+ is as large as or larger than <tt>self.length</tt>,
- *  removes all elements; returns those elements in a new \Array:
+ *    a = [0, 1, 2, 3]
+ *    a.shift(2)   # => [0, 1]
+ *    a            # => [2, 3]
+ *    a.shift(1.1) # => [2]
+ *    a            # => [3]
+ *    a.shift(0)   # => []
+ *    a            # => [3]
+ *
+ *  If +count+ is large,
+ *  removes and returns all elements:
  *
- *    a = [:foo, 'bar', 2]
- *    a.shift(3) # => [:foo, 'bar', 2]
+ *    a = [0, 1, 2, 3]
+ *    a.shift(50) # => [0, 1, 2, 3]
+ *    a           # => []
  *
- *  If +n+ is zero, returns a new empty \Array; +self+ is unmodified.
+ *  If +self+ is empty, returns a new empty array.
  *
- *  Related: #push, #pop, #unshift.
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 static VALUE
@@ -1658,7 +1584,7 @@ rb_ary_shift_m(int argc, VALUE *argv, VALUE ary)
     return result;
 }
 
-MJIT_FUNC_EXPORTED VALUE
+VALUE
 rb_ary_behead(VALUE ary, long n)
 {
     if (n <= 0) {
@@ -1669,7 +1595,7 @@ rb_ary_behead(VALUE ary, long n)
 
     if (!ARY_SHARED_P(ary)) {
         if (ARY_EMBED_P(ary) || RARRAY_LEN(ary) < ARY_DEFAULT_SIZE) {
-            RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+            RARRAY_PTR_USE(ary, ptr, {
                 MEMMOVE(ptr, ptr + n, VALUE, RARRAY_LEN(ary) - n);
             }); /* WB: no new reference */
             ARY_INCREASE_LEN(ary, -n);
@@ -1702,7 +1628,7 @@ make_room_for_unshift(VALUE ary, const VALUE *head, VALUE *sharedp, int argc, lo
         head = sharedp + argc + room;
     }
     ARY_SET_PTR(ary, head - argc);
-    assert(ARY_SHARED_ROOT_OCCUPIED(ARY_SHARED_ROOT(ary)));
+    RUBY_ASSERT(ARY_SHARED_ROOT_OCCUPIED(ARY_SHARED_ROOT(ary)));
 
     ary_verify(ary);
     return ARY_SHARED_ROOT(ary);
@@ -1730,12 +1656,12 @@ ary_modify_for_unshift(VALUE ary, int argc)
         capa = ARY_CAPA(ary);
         ary_make_shared(ary);
 
-        head = sharedp = RARRAY_CONST_PTR_TRANSIENT(ary);
+        head = sharedp = RARRAY_CONST_PTR(ary);
         return make_room_for_unshift(ary, head, (void *)sharedp, argc, capa, len);
     }
     else {
         /* sliding items */
-        RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+        RARRAY_PTR_USE(ary, ptr, {
             MEMMOVE(ptr + argc, ptr, VALUE, len);
         });
 
@@ -1767,8 +1693,8 @@ ary_ensure_room_for_unshift(VALUE ary, int argc)
             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);
+            const VALUE * head = RARRAY_CONST_PTR(ary);
+            void *sharedp = (void *)RARRAY_CONST_PTR(shared_root);
 
             rb_ary_modify_check(ary);
             return make_room_for_unshift(ary, head, sharedp, argc, capa, len);
@@ -1778,19 +1704,19 @@ ary_ensure_room_for_unshift(VALUE ary, int argc)
 
 /*
  *  call-seq:
- *    array.unshift(*objects) -> self
+ *    unshift(*objects) -> self
+ *    prepend(*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.
+ *  Related: Array#shift;
+ *  see also {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
-static VALUE
+VALUE
 rb_ary_unshift_m(int argc, VALUE *argv, VALUE ary)
 {
     long len = RARRAY_LEN(ary);
@@ -1810,7 +1736,7 @@ rb_ary_unshift_m(int argc, VALUE *argv, VALUE ary)
 VALUE
 rb_ary_unshift(VALUE ary, VALUE item)
 {
-    return rb_ary_unshift_m(1,&item,ary);
+    return rb_ary_unshift_m(1, &item, ary);
 }
 
 /* faster version - use this if you don't need to treat negative offset */
@@ -1863,25 +1789,38 @@ 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
- *    array[aseq] -> object or nil
- *    array.slice(index) -> object or nil
- *    array.slice(start, length) -> object or nil
- *    array.slice(range) -> object or nil
- *    array.slice(aseq) -> object or nil
+ *    self[offset] -> object or nil
+ *    self[offset, size] -> object or nil
+ *    self[range] -> object or nil
+ *    self[aseq] -> object or nil
  *
  *  Returns elements from +self+; does not modify +self+.
  *
- *  When a single \Integer argument +index+ is given, returns the element at offset +index+:
+ *  In brief:
+ *
+ *    a = [:foo, 'bar', 2]
+ *
+ *    # Single argument offset: returns one element.
+ *    a[0]     # => :foo          # Zero-based index.
+ *    a[-1]    # => 2             # Negative index counts backwards from end.
+ *
+ *    # Arguments offset and size: returns an array.
+ *    a[1, 2]  # => ["bar", 2]
+ *    a[-2, 2] # => ["bar", 2]    # Negative offset counts backwards from end.
+ *
+ *    # Single argument range: returns an array.
+ *    a[0..1]  # => [:foo, "bar"]
+ *    a[0..-2] # => [:foo, "bar"] # Negative range-begin counts backwards from end.
+ *    a[-2..2] # => ["bar", 2]    # Negative range-end counts backwards from end.
+ *
+ *  When a single integer argument +offset+ is given, returns the element at offset +offset+:
  *
  *    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+:
+ *  If +offset+ is negative, counts backwards from the end of +self+:
  *
  *    a = [:foo, 'bar', 2]
  *    a[-1] # => 2
@@ -1889,35 +1828,35 @@ static VALUE rb_ary_aref2(VALUE ary, VALUE b, VALUE e);
  *
  *  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+:
+ *  When two Integer arguments +offset+ and +size+ are given,
+ *  returns a new array of size +size+ containing successive elements beginning at offset +offset+:
  *
  *    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:
+ *  If <tt>offset + size</tt> is greater than <tt>self.size</tt>,
+ *  returns all elements from offset +offset+ 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 <tt>offset == self.size</tt> and <tt>size >= 0</tt>,
+ *  returns a new empty array.
  *
- *  If +length+ is negative, returns +nil+.
+ *  If +size+ 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:
+ *  When a single Range argument +range+ is given,
+ *  treats <tt>range.min</tt> as +offset+ above
+ *  and <tt>range.size</tt> as +size+ 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.
+ *  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:
  *
@@ -1941,7 +1880,7 @@ static VALUE rb_ary_aref2(VALUE ary, VALUE b, VALUE e);
  *    a[4..-1] # => nil
  *
  *  When a single Enumerator::ArithmeticSequence argument +aseq+ is given,
- *  returns an \Array of elements corresponding to the indexes produced by
+ *  returns an array of elements corresponding to the indexes produced by
  *  the sequence.
  *
  *    a = ['--', 'data1', '--', 'data2', '--', 'data3']
@@ -1963,7 +1902,7 @@ static VALUE rb_ary_aref2(VALUE ary, VALUE b, VALUE e);
  *    # Raises TypeError (no implicit conversion of Symbol into Integer):
  *    a[:foo]
  *
- *  Array#slice is an alias for Array#[].
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 VALUE
@@ -1987,7 +1926,7 @@ rb_ary_aref2(VALUE ary, VALUE b, VALUE e)
     return rb_ary_subseq(ary, beg, len);
 }
 
-MJIT_FUNC_EXPORTED VALUE
+VALUE
 rb_ary_aref1(VALUE ary, VALUE arg)
 {
     long beg, len, step;
@@ -2011,13 +1950,26 @@ rb_ary_aref1(VALUE ary, VALUE arg)
 
 /*
  *  call-seq:
- *    array.at(index) -> object
+ *    at(index) -> object or nil
+ *
+ *  Returns the element of +self+ specified by the given +index+
+ *  or +nil+ if there is no such element;
+ *  +index+ must be an
+ *  {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects].
+ *
+ *  For non-negative +index+, returns the element of +self+ at offset +index+:
  *
- *  Returns the element at \Integer offset +index+; does not modify +self+.
  *    a = [:foo, 'bar', 2]
- *    a.at(0) # => :foo
- *    a.at(2) # => 2
+ *    a.at(0)   # => :foo
+ *    a.at(2)   # => 2
+ *    a.at(2.0) # => 2
  *
+ *  For negative +index+, counts backwards from the end of +self+:
+ *
+ *    a.at(-2) # => "bar"
+ *
+ *  Related: Array#[];
+ *  see also {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 VALUE
@@ -2026,39 +1978,7 @@ 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.
- */
+#if 0
 static VALUE
 rb_ary_first(int argc, VALUE *argv, VALUE ary)
 {
@@ -2070,48 +1990,26 @@ rb_ary_first(int argc, VALUE *argv, VALUE ary)
         return ary_take_first_or_last(argc, argv, ary, ARY_TAKE_FIRST);
     }
 }
+#endif
 
-/*
- *  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.
- */
+static VALUE
+ary_first(VALUE self)
+{
+    return (RARRAY_LEN(self) == 0) ? Qnil : RARRAY_AREF(self, 0);
+}
+
+static VALUE
+ary_last(VALUE self)
+{
+    long len = RARRAY_LEN(self);
+    return (len == 0) ? Qnil : RARRAY_AREF(self, len-1);
+}
 
 VALUE
-rb_ary_last(int argc, const VALUE *argv, VALUE ary)
+rb_ary_last(int argc, const VALUE *argv, VALUE ary) // used by parse.y
 {
     if (argc == 0) {
-        long len = RARRAY_LEN(ary);
-        if (len == 0) return Qnil;
-        return RARRAY_AREF(ary, len-1);
+        return ary_last(ary);
     }
     else {
         return ary_take_first_or_last(argc, argv, ary, ARY_TAKE_LAST);
@@ -2120,17 +2018,19 @@ rb_ary_last(int argc, const VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.fetch(index) -> element
- *    array.fetch(index, default_value) -> element
- *    array.fetch(index) {|index| ... } -> element
+ *    fetch(index) -> element
+ *    fetch(index, default_value) -> element or default_value
+ *    fetch(index) {|index| ... } -> element or block_return_value
  *
- *  Returns the element at offset  +index+.
+ *  Returns the element of +self+ at offset +index+ if +index+ is in range; +index+ must be an
+ *  {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects].
  *
- *  With the single \Integer argument +index+,
+ *  With the single argument +index+ and no block,
  *  returns the element at offset +index+:
  *
  *    a = [:foo, 'bar', 2]
- *    a.fetch(1) # => "bar"
+ *    a.fetch(1)   # => "bar"
+ *    a.fetch(1.1) # => "bar"
  *
  *  If +index+ is negative, counts from the end of the array:
  *
@@ -2138,12 +2038,12 @@ rb_ary_last(int argc, const VALUE *argv, VALUE ary)
  *    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+:
+ *  With arguments +index+ and +default_value+ (which may be any object) and no block,
+ *  returns +default_value+ if +index+ is out-of-range:
  *
  *    a = [:foo, 'bar', 2]
- *    a.fetch(1, nil) # => "bar"
+ *    a.fetch(1, nil)  # => "bar"
+ *    a.fetch(3, :foo) # => :foo
  *
  *  With argument +index+ and a block,
  *  returns the element at offset +index+ if index is in range
@@ -2153,6 +2053,7 @@ rb_ary_last(int argc, const VALUE *argv, VALUE ary)
  *    a.fetch(1) {|index| raise 'Cannot happen' } # => "bar"
  *    a.fetch(50) {|index| "Value for #{index}" } # => "Value for 50"
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -2184,14 +2085,106 @@ rb_ary_fetch(int argc, VALUE *argv, VALUE ary)
 }
 
 /*
+ * call-seq:
+ *   find(if_none_proc = nil) {|element| ... } -> object or nil
+ *   find(if_none_proc = nil) -> enumerator
+ *
+ * Returns the first element for which the block returns a truthy value.
+ *
+ * With a block given, calls the block with successive elements of the array;
+ * returns the first element for which the block returns a truthy value:
+ *
+ *   [1, 3, 5].find {|element| element > 2}                # => 3
+ *
+ * If no such element is found, calls +if_none_proc+ and returns its return value.
+ *
+ *   [1, 3, 5].find(proc {-1}) {|element| element > 12} # => -1
+ *
+ * With no block given, returns an Enumerator.
+ *
+ */
+
+static VALUE
+rb_ary_find(int argc, VALUE *argv, VALUE ary)
+{
+    VALUE if_none;
+    long idx;
+
+    RETURN_ENUMERATOR(ary, argc, argv);
+    if_none = rb_check_arity(argc, 0, 1) ? argv[0] : Qnil;
+
+    for (idx = 0; idx < RARRAY_LEN(ary); idx++) {
+        VALUE elem = RARRAY_AREF(ary, idx);
+        if (RTEST(rb_yield(elem))) {
+            return elem;
+        }
+    }
+
+    if (!NIL_P(if_none)) {
+        return rb_funcallv(if_none, idCall, 0, 0);
+    }
+    return Qnil;
+}
+
+/*
+ * call-seq:
+ *   rfind(if_none_proc = nil) {|element| ... } -> object or nil
+ *   rfind(if_none_proc = nil) -> enumerator
+ *
+ * Returns the last element for which the block returns a truthy value.
+ *
+ * With a block given, calls the block with successive elements of the array in
+ * reverse order; returns the first element for which the block returns a truthy
+ * value:
+ *
+ *   [1, 2, 3, 4, 5, 6].rfind {|element| element < 5}       # => 4
+ *
+ * If no such element is found, calls +if_none_proc+ and returns its return value.
+ *
+ *   [1, 2, 3, 4].rfind(proc {0}) {|element| element < -2}  # => 0
+ *
+ * With no block given, returns an Enumerator.
+ *
+ */
+
+static VALUE
+rb_ary_rfind(int argc, VALUE *argv, VALUE ary)
+{
+    VALUE if_none;
+    long len, idx;
+
+    RETURN_ENUMERATOR(ary, argc, argv);
+    if_none = rb_check_arity(argc, 0, 1) ? argv[0] : Qnil;
+
+    idx = RARRAY_LEN(ary);
+    while (idx--) {
+        VALUE elem = RARRAY_AREF(ary, idx);
+        if (RTEST(rb_yield(elem))) {
+            return elem;
+        }
+
+        len = RARRAY_LEN(ary);
+        idx = (idx >= len) ? len : idx;
+    }
+
+    if (!NIL_P(if_none)) {
+        return rb_funcallv(if_none, idCall, 0, 0);
+    }
+    return Qnil;
+}
+
+/*
  *  call-seq:
- *    array.index(object) -> integer or nil
- *    array.index {|element| ... } -> integer or nil
- *    array.index -> new_enumerator
+ *    find_index(object) -> integer or nil
+ *    find_index {|element| ... } -> integer or nil
+ *    find_index -> new_enumerator
+ *    index(object) -> integer or nil
+ *    index {|element| ... } -> integer or nil
+ *    index -> new_enumerator
  *
- *  Returns the index of a specified element.
+ *  Returns the zero-based integer index of a specified element, or +nil+.
  *
- *  When argument +object+ is given but no block,
+ *  With only argument +object+ given,
  *  returns the index of the first element +element+
  *  for which <tt>object == element</tt>:
  *
@@ -2200,7 +2193,7 @@ rb_ary_fetch(int argc, VALUE *argv, VALUE ary)
  *
  *  Returns +nil+ if no such element found.
  *
- *  When both argument +object+ and a block are given,
+ *  With only a block given,
  *  calls the block with each successive element;
  *  returns the index of the first element for which the block returns a truthy value:
  *
@@ -2209,16 +2202,9 @@ rb_ary_fetch(int argc, VALUE *argv, VALUE ary)
  *
  *  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.
+ *  With neither an argument nor a block given, returns a new Enumerator.
  *
- *  Related: #rindex.
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -2251,20 +2237,20 @@ rb_ary_index(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.rindex(object) -> integer or nil
- *    array.rindex {|element| ... } -> integer or nil
- *    array.rindex -> new_enumerator
+ *    rindex(object) -> integer or nil
+ *    rindex {|element| ... } -> integer or nil
+ *    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:
+ *  With argument +object+ given, 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;
+ *  With a block given, 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']
@@ -2272,14 +2258,9 @@ rb_ary_index(int argc, VALUE *argv, VALUE ary)
  *
  *  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
+ *  When neither an argument nor a block is given, returns a new Enumerator.
  *
- *  Related: #index.
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -2344,7 +2325,7 @@ rb_ary_splice(VALUE ary, long beg, long len, const VALUE *rptr, long rlen)
     }
 
     {
-        const VALUE *optr = RARRAY_CONST_PTR_TRANSIENT(ary);
+        const VALUE *optr = RARRAY_CONST_PTR(ary);
         rofs = (rptr >= optr && rptr < optr + olen) ? rptr - optr : -1;
     }
 
@@ -2357,7 +2338,7 @@ rb_ary_splice(VALUE ary, long beg, long len, const VALUE *rptr, long rlen)
         len = beg + rlen;
         ary_mem_clear(ary, olen, beg - olen);
         if (rlen > 0) {
-            if (rofs != -1) rptr = RARRAY_CONST_PTR_TRANSIENT(ary) + rofs;
+            if (rofs != -1) rptr = RARRAY_CONST_PTR(ary) + rofs;
             ary_memcpy0(ary, beg, rlen, rptr, target_ary);
         }
         ARY_SET_LEN(ary, len);
@@ -2375,20 +2356,25 @@ rb_ary_splice(VALUE ary, long beg, long len, const VALUE *rptr, long rlen)
         }
 
         if (len != rlen) {
-            RARRAY_PTR_USE_TRANSIENT(ary, ptr,
+            RARRAY_PTR_USE(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);
+            if (rofs == -1) {
+                rb_gc_writebarrier_remember(ary);
+            }
+            else {
+                /* In this case, we're copying from a region in this array, so
+                 * we don't need to fire the write barrier. */
+                rptr = RARRAY_CONST_PTR(ary) + rofs;
+            }
 
             /* 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,
+            RARRAY_PTR_USE(ary, ptr,
                                      MEMMOVE(ptr + beg, rptr, VALUE, rlen));
         }
     }
@@ -2421,7 +2407,7 @@ rb_ary_resize(VALUE ary, long len)
         rb_raise(rb_eIndexError, "index %ld too big", len);
     }
     if (len > olen) {
-        if (len >= ARY_CAPA(ary)) {
+        if (len > ARY_CAPA(ary)) {
             ary_double_capa(ary, len);
         }
         ary_mem_clear(ary, olen, len - olen);
@@ -2433,9 +2419,8 @@ rb_ary_resize(VALUE ary, long len)
     else if (len <= ary_embed_capa(ary)) {
         const VALUE *ptr = ARY_HEAP_PTR(ary);
         long ptr_capa = ARY_HEAP_SIZE(ary);
-        bool is_malloc_ptr = !ARY_SHARED_P(ary) && !RARRAY_TRANSIENT_P(ary);
+        bool is_malloc_ptr = !ARY_SHARED_P(ary);
 
-        FL_UNSET(ary, RARRAY_TRANSIENT_FLAG);
         FL_SET_EMBED(ary);
 
         MEMCPY((VALUE *)ARY_EMBED_PTR(ary), ptr, VALUE, len); /* WB: no new reference */
@@ -2465,20 +2450,48 @@ static VALUE
 ary_aset_by_rb_ary_splice(VALUE ary, long beg, long len, VALUE val)
 {
     VALUE rpl = rb_ary_to_ary(val);
-    rb_ary_splice(ary, beg, len, RARRAY_CONST_PTR_TRANSIENT(rpl), RARRAY_LEN(rpl));
+    rb_ary_splice(ary, beg, len, RARRAY_CONST_PTR(rpl), RARRAY_LEN(rpl));
     RB_GC_GUARD(rpl);
     return val;
 }
 
 /*
  *  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+.
+ *    self[index] = object -> object
+ *    self[start, length] = object -> object
+ *    self[range] = object -> object
+ *
+ *  Assigns elements in +self+, based on the given +object+; returns +object+.
+ *
+ *  In brief:
+ *
+ *      a_orig = [:foo, 'bar', 2]
+ *
+ *      # With argument index.
+ *      a = a_orig.dup
+ *      a[0] = 'foo' # => "foo"
+ *      a # => ["foo", "bar", 2]
+ *      a = a_orig.dup
+ *      a[7] = 'foo' # => "foo"
+ *      a # => [:foo, "bar", 2, nil, nil, nil, nil, "foo"]
+ *
+ *      # With arguments start and length.
+ *      a = a_orig.dup
+ *      a[0, 2] = 'foo' # => "foo"
+ *      a # => ["foo", 2]
+ *      a = a_orig.dup
+ *      a[6, 50] = 'foo' # => "foo"
+ *      a # => [:foo, "bar", 2, nil, nil, nil, "foo"]
+ *
+ *      # With argument range.
+ *      a = a_orig.dup
+ *      a[0..1] = 'foo' # => "foo"
+ *      a # => ["foo", 2]
+ *      a = a_orig.dup
+ *      a[6..50] = 'foo' # => "foo"
+ *      a # => [:foo, "bar", 2, nil, nil, nil, "foo"]
+ *
+ *  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+:
  *
@@ -2498,7 +2511,7 @@ ary_aset_by_rb_ary_splice(VALUE ary, long beg, long len, VALUE val)
  *    a[-1] = 'two' # => "two"
  *    a # => [:foo, "bar", "two"]
  *
- *  When \Integer arguments +start+ and +length+ are given and +object+ is not an \Array,
+ *  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+:
  *
@@ -2533,7 +2546,7 @@ ary_aset_by_rb_ary_splice(VALUE ary, long beg, long len, VALUE val)
  *    a[1, 5] = 'foo' # => "foo"
  *    a # => [:foo, "foo"]
  *
- *  When \Range argument +range+ is given and +object+ is an \Array,
+ *  When Range argument +range+ is given and +object+ is not an array,
  *  removes <tt>length - 1</tt> elements beginning at offset +start+,
  *  and assigns +object+ at offset +start+:
  *
@@ -2548,7 +2561,8 @@ ary_aset_by_rb_ary_splice(VALUE ary, long beg, long len, VALUE val)
  *    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+:
+ *  extends the array with +nil+, assigns +object+ at offset <tt>range.begin</tt>,
+ *  and ignores +length+:
  *
  *    a = [:foo, 'bar', 2]
  *    a[6..50] = 'foo' # => "foo"
@@ -2582,6 +2596,7 @@ ary_aset_by_rb_ary_splice(VALUE ary, long beg, long len, VALUE val)
  *    a[1..5] = 'foo' # => "foo"
  *    a # => [:foo, "foo"]
  *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 static VALUE
@@ -2611,38 +2626,38 @@ rb_ary_aset(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.insert(index, *objects) -> self
+ *    insert(index, *objects) -> self
  *
- *  Inserts given +objects+ before or after the element at \Integer index +offset+;
+ *  Inserts the given +objects+ as elements of +self+;
  *  returns +self+.
  *
- *  When +index+ is non-negative, inserts all given +objects+
- *  before the element at offset +index+:
+ *  When +index+ is non-negative, inserts +objects+
+ *  _before_ the element at offset +index+:
  *
- *    a = [:foo, 'bar', 2]
- *    a.insert(1, :bat, :bam) # => [:foo, :bat, :bam, "bar", 2]
+ *    a = ['a', 'b', 'c']     # => ["a", "b", "c"]
+ *    a.insert(1, :x, :y, :z) # => ["a", :x, :y, :z, "b", "c"]
  *
  *  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]
+ *    a = ['a', 'b', 'c']     # => ["a", "b", "c"]
+ *    a.insert(5, :x, :y, :z) # => ["a", "b", "c", nil, nil, :x, :y, :z]
  *
- *  Does nothing if no objects given:
+ *  When +index+ is negative, inserts +objects+
+ *  _after_ the element at offset <tt>index + self.size</tt>:
  *
- *    a = [:foo, 'bar', 2]
- *    a.insert(1)
- *    a.insert(50)
- *    a.insert(-50)
- *    a # => [:foo, "bar", 2]
+ *    a = ['a', 'b', 'c']      # => ["a", "b", "c"]
+ *    a.insert(-2, :x, :y, :z) # => ["a", "b", :x, :y, :z, "c"]
  *
- *  When +index+ is negative, inserts all given +objects+
- *  _after_ the element at offset <tt>index+self.size</tt>:
+ *  With no +objects+ given, does nothing:
  *
- *    a = [:foo, 'bar', 2]
- *    a.insert(-2, :bat, :bam)
- *    a # => [:foo, "bar", :bat, :bam, 2]
+ *    a = ['a', 'b', 'c'] # => ["a", "b", "c"]
+ *    a.insert(1)         # => ["a", "b", "c"]
+ *    a.insert(50)        # => ["a", "b", "c"]
+ *    a.insert(-50)       # => ["a", "b", "c"]
+ *
+ *  Raises IndexError if +objects+ are given and +index+ is negative and out of range.
  *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 static VALUE
@@ -2678,14 +2693,27 @@ ary_enum_length(VALUE ary, VALUE args, VALUE eobj)
     return rb_ary_length(ary);
 }
 
+// Primitive to avoid a race condition in Array#each.
+// Return `true` and write `value` and `index` if the element exists.
+static VALUE
+ary_fetch_next(VALUE self, VALUE *index, VALUE *value)
+{
+    long i = NUM2LONG(*index);
+    if (i >= RARRAY_LEN(self)) {
+        return Qfalse;
+    }
+    *value = RARRAY_AREF(self, i);
+    *index = LONG2NUM(i + 1);
+    return Qtrue;
+}
+
 /*
  *  call-seq:
- *    array.each {|element| ... } -> self
- *    array.each -> Enumerator
+ *    each {|element| ... } -> self
+ *    each -> new_enumerator
  *
- *  Iterates over array elements.
- *
- *  When a block given, passes each successive array element to the block;
+ *  With a block given, iterates over the elements of +self+,
+ *  passing each element to the block;
  *  returns +self+:
  *
  *    a = [:foo, 'bar', 2]
@@ -2707,20 +2735,9 @@ ary_enum_length(VALUE ary, VALUE args, VALUE eobj)
  *    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}" }
+ *  With no block given, returns a new Enumerator.
  *
- *  Output:
- *
- *    Symbol foo
- *    String bar
- *    Integer 2
- *
- *  Related: #each_index, #reverse_each.
+ *  Related: see {Methods for Iterating}[rdoc-ref:Array@Methods+for+Iterating].
  */
 
 VALUE
@@ -2737,12 +2754,11 @@ rb_ary_each(VALUE ary)
 
 /*
  *  call-seq:
- *    array.each_index {|index| ... } -> self
- *    array.each_index -> Enumerator
+ *    each_index {|index| ... } -> self
+ *    each_index -> new_enumerator
  *
- *  Iterates over array indexes.
- *
- *  When a block given, passes each successive array index to the block;
+ *  With a block given, iterates over the elements of +self+,
+ *  passing each <i>array index</i> to the block;
  *  returns +self+:
  *
  *    a = [:foo, 'bar', 2]
@@ -2758,26 +2774,16 @@ rb_ary_each(VALUE ary)
  *
  *    a = [:foo, 'bar', 2]
  *    a.each_index {|index| puts index; a.clear if index > 0 }
+ *    a # => []
  *
  *  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
+ *  With no block given, returns a new Enumerator.
  *
- *  Related: #each, #reverse_each.
+ *  Related: see {Methods for Iterating}[rdoc-ref:Array@Methods+for+Iterating].
  */
 
 static VALUE
@@ -2794,47 +2800,26 @@ rb_ary_each_index(VALUE ary)
 
 /*
  *  call-seq:
- *    array.reverse_each {|element| ... } -> self
- *    array.reverse_each -> Enumerator
+ *    reverse_each {|element| ... } -> self
+ *    reverse_each -> Enumerator
  *
- *  Iterates backwards over array elements.
- *
- *  When a block given, passes, in reverse order, each element to the block;
+ *  When a block given, iterates backwards over the elements of +self+,
+ *  passing, 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
+ *    a = []
+ *    [0, 1, 2].reverse_each {|element| a.push(element) }
+ *    a # => [2, 1, 0]
  *
  *  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:
+ *    a = ['a', 'b', 'c']
+ *    a.reverse_each {|element| a.clear if element.start_with?('b') }
+ *    a # => []
  *
- *    2
- *    bar
+ *  When no block given, returns a new Enumerator.
  *
- *  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.
+ *  Related: see {Methods for Iterating}[rdoc-ref:Array@Methods+for+Iterating].
  */
 
 static VALUE
@@ -2857,9 +2842,15 @@ rb_ary_reverse_each(VALUE ary)
 
 /*
  *  call-seq:
- *    array.length -> an_integer
+ *    length -> integer
+ *    size -> integer
  *
- *  Returns the count of elements in +self+.
+ *  Returns the count of elements in +self+:
+ *
+ *    [0, 1, 2].length # => 3
+ *    [].length        # => 0
+ *
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -2871,10 +2862,12 @@ rb_ary_length(VALUE ary)
 
 /*
  *  call-seq:
- *    array.empty?  -> true or false
+ *    empty?  -> true or false
  *
  *  Returns +true+ if the count of elements in +self+ is zero,
  *  +false+ otherwise.
+ *
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -2888,7 +2881,7 @@ 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_memcpy(dup, 0, len, RARRAY_CONST_PTR(ary));
     ARY_SET_LEN(dup, len);
 
     ary_verify(ary);
@@ -3009,23 +3002,28 @@ rb_ary_join(VALUE ary, VALUE sep)
         StringValue(sep);
         len += RSTRING_LEN(sep) * (RARRAY_LEN(ary) - 1);
     }
-    for (i=0; i<RARRAY_LEN(ary); i++) {
+    long len_memo = RARRAY_LEN(ary);
+    for (i=0; i < len_memo; 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;
+        if (RB_UNLIKELY(!RB_TYPE_P(val, T_STRING))) {
+            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);
+            len_memo = RARRAY_LEN(ary);
+        }
+        else {
+            len += RSTRING_LEN(val);
         }
-
-        len += RSTRING_LEN(tmp);
     }
 
     result = rb_str_new(0, len);
@@ -3038,31 +3036,32 @@ rb_ary_join(VALUE ary, VALUE sep)
 
 /*
  *  call-seq:
- *    array.join ->new_string
- *    array.join(separator = $,) -> new_string
+ *    join(separator = $,) -> new_string
  *
- *  Returns the new \String formed by joining the array elements after conversion.
- *  For each element +element+:
+ *  Returns the new string formed by joining the converted elements of +self+;
+ *  for each element +element+:
  *
- *  - Uses <tt>element.to_s</tt> if +element+ is not a <tt>kind_of?(Array)</tt>.
- *  - Uses recursive <tt>element.join(separator)</tt> if +element+ is a <tt>kind_of?(Array)</tt>.
+ *  - Converts recursively using <tt>element.join(separator)</tt>
+ *    if +element+ is a <tt>kind_of?(Array)</tt>.
+ *  - Otherwise, converts using <tt>element.to_s</tt>.
  *
- *  With no argument, joins using the output field separator, <tt>$,</tt>:
+ *  With no argument given, joins using the output field separator, <tt>$,</tt>:
  *
  *    a = [:foo, 'bar', 2]
  *    $, # => nil
  *    a.join # => "foobar2"
  *
- *  With \string argument +separator+, joins using that separator:
+ *  With string argument +separator+ given, joins using that separator:
  *
  *    a = [:foo, 'bar', 2]
  *    a.join("\n") # => "foo\nbar\n2"
  *
- *  Joins recursively for nested Arrays:
+ *  Joins recursively for nested arrays:
  *
  *   a = [:foo, [:bar, [:baz, :bat]]]
  *   a.join # => "foobarbazbat"
  *
+ *  Related: see {Methods for Converting}[rdoc-ref:Array@Methods+for+Converting].
  */
 static VALUE
 rb_ary_join_m(int argc, VALUE *argv, VALUE ary)
@@ -3099,15 +3098,16 @@ inspect_ary(VALUE ary, VALUE dummy, int recur)
 
 /*
  *  call-seq:
- *    array.inspect -> new_string
+ *    inspect -> new_string
+ *    to_s -> new_string
  *
- *  Returns the new \String formed by calling method <tt>#inspect</tt>
+ *  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.
+ *  Related: see {Methods for Converting}[rdoc-ref:Array@Methods+for+Converting].
  */
 
 static VALUE
@@ -3127,21 +3127,17 @@ rb_ary_to_s(VALUE ary)
  *  call-seq:
  *    to_a -> self or new_array
  *
- *  When +self+ is an instance of \Array, returns +self+:
+ *  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+:
+ *  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
+ *    my_a = MyArray.new(['foo', 'bar', 'two'])
+ *    a = my_a.to_a
+ *    a # => ["foo", "bar", "two"]
+ *    a.class # => Array # Not MyArray.
  *
+ *  Related: see {Methods for Converting}[rdoc-ref:Array@Methods+for+Converting].
  */
 
 static VALUE
@@ -3157,27 +3153,27 @@ rb_ary_to_a(VALUE ary)
 
 /*
  *  call-seq:
- *    array.to_h -> new_hash
- *    array.to_h {|item| ... } -> new_hash
+ *    to_h -> new_hash
+ *    to_h {|element| ... } -> new_hash
  *
- *  Returns a new \Hash formed from +self+.
+ *  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:
+ *  With no block given, each element of +self+ must be a 2-element sub-array;
+ *  forms each sub-array into a key-value pair in the new 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}}
+ *    a = [['foo', 'zero'], ['bar', 'one'], ['baz', 'two']]
+ *    a.to_h # => {"foo"=>"zero", "bar"=>"one", "baz"=>"two"}
+ *    [].to_h # => {}
  *
- *  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:
+ *  With a block given, the block must return a 2-element array;
+ *  calls the block with each element of +self+;
+ *  forms each returned array into a key-value pair in the returned hash:
  *
- *    [].to_h # => {}
- *    a = [['foo', 'zero'], ['bar', 'one'], ['baz', 'two']]
- *    h = a.to_h
- *    h # => {"foo"=>"zero", "bar"=>"one", "baz"=>"two"}
+ *    a = ['foo', :bar, 1, [2, 3], {baz: 4}]
+ *    a.to_h {|element| [element, element.class] }
+ *    # => {"foo"=>String, :bar=>Symbol, 1=>Integer, [2, 3]=>Array, {:baz=>4}=>Hash}
  *
+ *  Related: see {Methods for Converting}[rdoc-ref:Array@Methods+for+Converting].
  */
 
 static VALUE
@@ -3206,7 +3202,7 @@ rb_ary_to_h(VALUE ary)
 
 /*
  *  call-seq:
- *    array.to_ary -> self
+ *    to_ary -> self
  *
  *  Returns +self+.
  */
@@ -3235,7 +3231,7 @@ rb_ary_reverse(VALUE ary)
 
     rb_ary_modify(ary);
     if (len > 1) {
-        RARRAY_PTR_USE_TRANSIENT(ary, p1, {
+        RARRAY_PTR_USE(ary, p1, {
             p2 = p1 + len - 1;	/* points last item */
             ary_reverse(p1, p2);
         }); /* WB: no new reference */
@@ -3245,13 +3241,16 @@ rb_ary_reverse(VALUE ary)
 
 /*
  *  call-seq:
- *    array.reverse! -> self
+ *    reverse! -> self
  *
- *  Reverses +self+ in place:
+ *  Reverses the order of the elements of +self+;
+ *  returns +self+:
  *
- *    a = ['foo', 'bar', 'two']
- *    a.reverse! # => ["two", "bar", "foo"]
+ *    a = [0, 1, 2]
+ *    a.reverse! # => [2, 1, 0]
+ *    a          # => [2, 1, 0]
  *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 static VALUE
@@ -3262,14 +3261,13 @@ rb_ary_reverse_bang(VALUE ary)
 
 /*
  *  call-seq:
- *    array.reverse -> new_array
+ *    reverse -> new_array
  *
- *  Returns a new \Array with the elements of +self+ in reverse order:
+ *  Returns a new array containing the elements of +self+ in reverse order:
  *
- *    a = ['foo', 'bar', 'two']
- *    a1 = a.reverse
- *    a1 # => ["two", "bar", "foo"]
+ *    [0, 1, 2].reverse # => [2, 1, 0]
  *
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 static VALUE
@@ -3279,8 +3277,8 @@ rb_ary_reverse_m(VALUE 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;
+        const VALUE *p1 = RARRAY_CONST_PTR(ary);
+        VALUE *p2 = (VALUE *)RARRAY_CONST_PTR(dup) + len - 1;
         do *p2-- = *p1++; while (--len > 0);
     }
     ARY_SET_LEN(dup, RARRAY_LEN(ary));
@@ -3322,7 +3320,7 @@ rb_ary_rotate(VALUE ary, long cnt)
     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));
+            RARRAY_PTR_USE(ary, ptr, ary_rotate_ptr(ptr, len, cnt));
             return ary;
         }
     }
@@ -3331,48 +3329,34 @@ rb_ary_rotate(VALUE ary, long cnt)
 
 /*
  *  call-seq:
- *    array.rotate! -> self
- *    array.rotate!(count) -> self
+ *    rotate!(count = 1) -> 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+,
+ *  With non-negative numeric +count+,
  *  rotates +count+ elements from the beginning to the end:
  *
- *    a = [:foo, 'bar', 2]
- *    a.rotate!(2)
- *    a # => [2, :foo, "bar"]
+ *    [0, 1, 2, 3].rotate!(2)   # => [2, 3, 0, 1]
+      [0, 1, 2, 3].rotate!(2.1) # => [2, 3, 0, 1]
  *
  *  If +count+ is large, uses <tt>count % array.size</tt> as the count:
  *
- *    a = [:foo, 'bar', 2]
- *    a.rotate!(20)
- *    a # => [2, :foo, "bar"]
+ *    [0, 1, 2, 3].rotate!(21) # => [1, 2, 3, 0]
  *
- *  If +count+ is zero, returns +self+ unmodified:
+ *  If +count+ is zero, rotates no elements:
  *
- *    a = [:foo, 'bar', 2]
- *    a.rotate!(0)
- *    a # => [:foo, "bar", 2]
+ *    [0, 1, 2, 3].rotate!(0) # => [0, 1, 2, 3]
  *
- *  When given a negative Integer +count+, rotates in the opposite direction,
+ *  With a negative numeric +count+, rotates in the opposite direction,
  *  from end to beginning:
  *
- *    a = [:foo, 'bar', 2]
- *    a.rotate!(-2)
- *    a # => ["bar", 2, :foo]
+ *    [0, 1, 2, 3].rotate!(-1) # => [3, 0, 1, 2]
  *
  *  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]
+ *    [0, 1, 2, 3].rotate!(-21) # => [3, 0, 1, 2]
  *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 static VALUE
@@ -3385,51 +3369,35 @@ rb_ary_rotate_bang(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.rotate -> new_array
- *    array.rotate(count) -> new_array
+ *    rotate(count = 1) -> new_array
  *
- *  Returns a new \Array formed from +self+ with elements
+ *  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:
+ *  With non-negative numeric +count+,
+ *  rotates elements from the beginning to the end:
  *
- *    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"]
+ *    [0, 1, 2, 3].rotate(2)   # => [2, 3, 0, 1]
+ *    [0, 1, 2, 3].rotate(2.1) # => [2, 3, 0, 1]
  *
  *  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"]
+ *    [0, 1, 2, 3].rotate(22) # => [2, 3, 0, 1]
  *
- *  If +count+ is zero, returns a copy of +self+, unmodified:
+ *  With a +count+ of zero, rotates no elements:
  *
- *    a = [:foo, 'bar', 2]
- *    a1 = a.rotate(0)
- *    a1 # => [:foo, "bar", 2]
+ *    [0, 1, 2, 3].rotate(0) # => [0, 1, 2, 3]
  *
- *  When given a negative \Integer +count+, rotates in the opposite direction,
- *  from end to beginning:
+ *  With negative numeric +count+, rotates in the opposite direction,
+ *  from the end to the beginning:
  *
- *    a = [:foo, 'bar', 2]
- *    a1 = a.rotate(-2)
- *    a1 # => ["bar", 2, :foo]
+ *    [0, 1, 2, 3].rotate(-1) # => [3, 0, 1, 2]
  *
  *  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]
+ *    [0, 1, 2, 3].rotate(-21) # => [3, 0, 1, 2]
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -3444,7 +3412,7 @@ rb_ary_rotate_m(int argc, VALUE *argv, VALUE ary)
     rotated = rb_ary_new2(len);
     if (len > 0) {
         cnt = rotate_count(cnt, len);
-        ptr = RARRAY_CONST_PTR_TRANSIENT(ary);
+        ptr = RARRAY_CONST_PTR(ary);
         len -= cnt;
         ary_memcpy(rotated, 0, len, ptr + cnt);
         ary_memcpy(rotated, len, cnt, ptr);
@@ -3456,7 +3424,6 @@ rb_ary_rotate_m(int argc, VALUE *argv, VALUE ary)
 struct ary_sort_data {
     VALUE ary;
     VALUE receiver;
-    struct cmp_opt_data cmp_opt;
 };
 
 static VALUE
@@ -3502,15 +3469,15 @@ sort_2(const void *ap, const void *bp, void *dummy)
     VALUE a = *(const VALUE *)ap, b = *(const VALUE *)bp;
     int n;
 
-    if (FIXNUM_P(a) && FIXNUM_P(b) && CMP_OPTIMIZABLE(data->cmp_opt, Integer)) {
+    if (FIXNUM_P(a) && FIXNUM_P(b) && CMP_OPTIMIZABLE(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)) {
+    if (STRING_P(a) && STRING_P(b) && CMP_OPTIMIZABLE(STRING)) {
         return rb_str_cmp(a, b);
     }
-    if (RB_FLOAT_TYPE_P(a) && CMP_OPTIMIZABLE(data->cmp_opt, Float)) {
+    if (RB_FLOAT_TYPE_P(a) && CMP_OPTIMIZABLE(FLOAT)) {
         return rb_float_cmp(a, b);
     }
 
@@ -3523,50 +3490,19 @@ sort_2(const void *ap, const void *bp, void *dummy)
 
 /*
  *  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"]
+ *    sort! -> self
+ *    sort! {|a, b| ... } -> self
  *
- *  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"]
+ *  Like Array#sort, but returns +self+ with its elements sorted in place.
  *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 VALUE
 rb_ary_sort_bang(VALUE ary)
 {
     rb_ary_modify(ary);
-    assert(!ARY_SHARED_P(ary));
+    RUBY_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;
@@ -3574,8 +3510,6 @@ rb_ary_sort_bang(VALUE ary)
         RBASIC_CLEAR_CLASS(tmp);
         data.ary = tmp;
         data.receiver = ary;
-        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);
@@ -3586,6 +3520,9 @@ rb_ary_sort_bang(VALUE ary)
                 rb_ary_unshare(ary);
                 FL_SET_EMBED(ary);
             }
+            if (ARY_EMBED_LEN(tmp) > ARY_CAPA(ary)) {
+                ary_resize_capa(ary, ARY_EMBED_LEN(tmp));
+            }
             ary_memcpy(ary, 0, ARY_EMBED_LEN(tmp), ARY_EMBED_PTR(tmp));
             ARY_SET_LEN(ary, ARY_EMBED_LEN(tmp));
         }
@@ -3595,7 +3532,7 @@ rb_ary_sort_bang(VALUE ary)
                 ARY_SET_CAPA(ary, RARRAY_LEN(tmp));
             }
             else {
-                assert(!ARY_SHARED_P(tmp));
+                RUBY_ASSERT(!ARY_SHARED_P(tmp));
                 if (ARY_EMBED_P(ary)) {
                     FL_UNSET_EMBED(ary);
                 }
@@ -3611,10 +3548,9 @@ rb_ary_sort_bang(VALUE ary)
                 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);
+            OBJ_FREEZE(tmp);
         }
         /* tmp will be GC'ed. */
         RBASIC_SET_CLASS_RAW(tmp, rb_cArray); /* rb_cArray must be marked */
@@ -3625,21 +3561,18 @@ rb_ary_sort_bang(VALUE ary)
 
 /*
  *  call-seq:
- *    array.sort -> new_array
- *    array.sort {|a, b| ... } -> new_array
+ *    sort -> new_array
+ *    sort {|a, b| ... } -> new_array
  *
- *  Returns a new \Array whose elements are those from +self+, sorted.
+ *  Returns a new array containing the elements of +self+, sorted.
  *
- *  With no block, compares elements using operator <tt><=></tt>
- *  (see Comparable):
+ *  With no block given, compares elements using operator <tt>#<=></tt>
+ *  (see Object#<=>):
  *
- *    a = 'abcde'.split('').shuffle
- *    a # => ["e", "b", "d", "a", "c"]
- *    a1 = a.sort
- *    a1 # => ["a", "b", "c", "d", "e"]
+ *    [0, 2, 3, 1].sort # => [0, 1, 2, 3]
  *
- *  With a block, calls the block with each element pair;
- *  for each element pair +a+ and +b+, the block should return an integer:
+ *  With a block given, calls the block with each combination of pairs of elements from +self+;
+ *  for each pair +a+ and +b+, the block should return a numeric:
  *
  *  - Negative when +b+ is to follow +a+.
  *  - Zero when +a+ and +b+ are equivalent.
@@ -3647,22 +3580,17 @@ rb_ary_sort_bang(VALUE ary)
  *
  *  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"]
+ *    a = [3, 2, 0, 1]
+ *    a.sort {|a, b| a <=> b } # => [0, 1, 2, 3]
+ *    a.sort {|a, b| b <=> a } # => [3, 2, 1, 0]
  *
  *  When the block returns zero, the order for +a+ and +b+ is indeterminate,
- *  and may be unstable:
+ *  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"]
+ *  See an example in Numeric#nonzero? for the idiom to sort more
+ *  complex structure.
  *
- *  Related: Enumerable#sort_by.
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 VALUE
@@ -3677,12 +3605,15 @@ static VALUE rb_ary_bsearch_index(VALUE ary);
 
 /*
  *  call-seq:
- *    array.bsearch {|element| ... } -> object
- *    array.bsearch -> new_enumerator
+ *    bsearch {|element| ... } -> found_element or nil
+ *    bsearch -> new_enumerator
+ *
+ *  Returns the element from +self+ found by a binary search,
+ *  or +nil+ if the search found no suitable element.
  *
- *  Returns an element from +self+ selected by a binary search.
+ *  See {Binary Searching}[rdoc-ref:language/bsearch.rdoc].
  *
- *  See {Binary Searching}[rdoc-ref:bsearch.rdoc].
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -3698,11 +3629,15 @@ rb_ary_bsearch(VALUE ary)
 
 /*
  *  call-seq:
- *    array.bsearch_index {|element| ... } -> integer or nil
- *    array.bsearch_index -> new_enumerator
+ *    bsearch_index {|element| ... } -> integer or nil
+ *    bsearch_index -> new_enumerator
  *
- *  Searches +self+ as described at method #bsearch,
- *  but returns the _index_ of the found element instead of the element itself.
+ *  Returns the integer index of the element from +self+ found by a binary search,
+ *  or +nil+ if the search found no suitable element.
+ *
+ *  See {Binary Searching}[rdoc-ref:language/bsearch.rdoc].
+ *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -3732,8 +3667,8 @@ rb_ary_bsearch_index(VALUE ary)
             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;
+              case 1: smaller = 0; break;
+              case -1: smaller = 1;
             }
         }
         else {
@@ -3761,28 +3696,24 @@ sort_by_i(RB_BLOCK_CALL_FUNC_ARGLIST(i, dummy))
 
 /*
  *  call-seq:
- *    array.sort_by! {|element| ... } -> self
- *    array.sort_by! -> new_enumerator
+ *    sort_by! {|element| ... } -> self
+ *    sort_by! -> new_enumerator
  *
- *  Sorts the elements of +self+ in place,
- *  using an ordering determined by the block; returns self.
+ *  With a block given, sorts the elements of +self+ in place;
+ *  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:
+ *  sorts elements based on the values returned from the block:
  *
  *    a = ['aaaa', 'bbb', 'cc', 'd']
  *    a.sort_by! {|element| element.size }
  *    a # => ["d", "cc", "bbb", "aaaa"]
  *
- *  Returns a new \Enumerator if no block given:
+ *  For duplicate values returned by the block, the ordering is indeterminate, and may be unstable.
  *
- *    a = ['aaaa', 'bbb', 'cc', 'd']
- *    a.sort_by! # => #<Enumerator: ["aaaa", "bbb", "cc", "d"]:sort_by!>
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 static VALUE
@@ -3792,30 +3723,32 @@ rb_ary_sort_by_bang(VALUE ary)
 
     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);
+    if (RARRAY_LEN(ary) > 1) {
+        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
+ *    collect {|element| ... } -> new_array
+ *    collect -> new_enumerator
+ *    map {|element| ... } -> new_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:
+ *  With a block given, calls the block 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>
+ *  With no block given, returns a new Enumerator.
  *
- *  Array#collect is an alias for Array#map.
+ *  Related: #collect!;
+ *  see also {Methods for Converting}[rdoc-ref:Array@Methods+for+Converting].
  */
 
 static VALUE
@@ -3835,22 +3768,22 @@ rb_ary_collect(VALUE ary)
 
 /*
  *  call-seq:
- *    array.map! {|element| ... } -> self
- *    array.map! -> new_enumerator
+ *    collect! {|element| ... } -> self
+ *    collect! -> new_enumerator
+ *    map! {|element| ... } -> self
+ *    map! -> new_enumerator
  *
- *  Calls the block, if given, with each element;
- *  replaces the element with the block's return value:
+ *  With a block given, calls the block with each element of +self+
+ *  and replaces the element with the block's return value;
+ *  returns +self+:
  *
  *    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!>
+ *  With no block given, returns a new Enumerator.
  *
- *  Array#collect! is an alias for Array#map!.
+ *  Related: #collect;
+ *  see also {Methods for Converting}[rdoc-ref:Array@Methods+for+Converting].
  */
 
 static VALUE
@@ -3902,7 +3835,7 @@ append_values_at_single(VALUE result, VALUE ary, long olen, VALUE 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 VALUE *const src = RARRAY_CONST_PTR(ary);
             const long end = beg + len;
             const long prevlen = RARRAY_LEN(result);
             if (beg < olen) {
@@ -3922,45 +3855,108 @@ append_values_at_single(VALUE result, VALUE ary, long olen, VALUE idx)
 
 /*
  *  call-seq:
- *    array.values_at(*indexes) -> new_array
+ *    values_at(*specifiers) -> new_array
  *
- *  Returns a new \Array whose elements are the elements
- *  of +self+ at the given \Integer or \Range +indexes+.
+ *  Returns elements from +self+ in a new array; does not modify +self+.
  *
- *  For each positive +index+, returns the element at offset +index+:
+ *  The objects included in the returned array are the elements of +self+
+ *  selected by the given +specifiers+,
+ *  each of which must be a numeric index or a Range.
  *
- *    a = [:foo, 'bar', 2]
- *    a.values_at(0, 2) # => [:foo, 2]
- *    a.values_at(0..1) # => [:foo, "bar"]
+ *  In brief:
  *
- *  The given +indexes+ may be in any order, and may repeat:
+ *    a = ['a', 'b', 'c', 'd']
  *
- *    a = [:foo, 'bar', 2]
- *    a.values_at(2, 0, 1, 0, 2) # => [2, :foo, "bar", :foo, 2]
- *    a.values_at(1, 0..2) # => ["bar", :foo, "bar", 2]
+ *    # Index specifiers.
+ *    a.values_at(2, 0, 2, 0)     # => ["c", "a", "c", "a"] # May repeat.
+ *    a.values_at(-4, -3, -2, -1) # => ["a", "b", "c", "d"] # Counts backwards if negative.
+ *    a.values_at(-50, 50)        # => [nil, nil]           # Outside of self.
  *
- *  Assigns +nil+ for an +index+ that is too large:
+ *    # Range specifiers.
+ *    a.values_at(1..3)       # => ["b", "c", "d"] # From range.begin to range.end.
+ *    a.values_at(1...3)      # => ["b", "c"]      # End excluded.
+ *    a.values_at(3..1)       # => []              # No such elements.
  *
- *    a = [:foo, 'bar', 2]
- *    a.values_at(0, 3, 1, 3) # => [:foo, nil, "bar", nil]
+ *    a.values_at(-3..3)  # => ["b", "c", "d"]     # Negative range.begin counts backwards.
+ *    a.values_at(-50..3)                          # Raises RangeError.
  *
- *  Returns a new empty \Array if no arguments given.
+ *    a.values_at(1..-2)  # => ["b", "c"]          # Negative range.end counts backwards.
+ *    a.values_at(1..-50) # => []                  # No such elements.
  *
- *  For each negative +index+, counts backward from the end of the array:
+ *    # Mixture of specifiers.
+ *    a.values_at(2..3, 3, 0..1, 0) # => ["c", "d", "d", "a", "b", "a"]
  *
- *    a = [:foo, 'bar', 2]
- *    a.values_at(-1, -3) # => [2, :foo]
+ *  With no +specifiers+ given, returns a new empty array:
  *
- *  Assigns +nil+ for an +index+ that is too small:
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.values_at # => []
  *
- *    a = [:foo, 'bar', 2]
- *    a.values_at(0, -5, 1, -6, 2) # => [:foo, nil, "bar", nil, 2]
+ *  For each numeric specifier +index+, includes an element:
  *
- *  The given +indexes+ may have a mixture of signs:
+ *  - For each non-negative numeric specifier +index+ that is in-range (less than <tt>self.size</tt>),
+ *    includes the element at offset +index+:
  *
- *    a = [:foo, 'bar', 2]
- *    a.values_at(0, -2, 1, -1) # => [:foo, "bar", "bar", 2]
+ *      a.values_at(0, 2)     # => ["a", "c"]
+ *      a.values_at(0.1, 2.9) # => ["a", "c"]
+ *
+ *  - For each negative numeric +index+ that is in-range (greater than or equal to <tt>- self.size</tt>),
+ *    counts backwards from the end of +self+:
+ *
+ *      a.values_at(-1, -4) # => ["d", "a"]
+ *
+ *  The given indexes may be in any order, and may repeat:
+ *
+ *    a.values_at(2, 0, 1, 0, 2) # => ["c", "a", "b", "a", "c"]
+ *
+ *  For each +index+ that is out-of-range, includes +nil+:
+ *
+ *    a.values_at(4, -5) # => [nil, nil]
  *
+ *  For each Range specifier +range+, includes elements
+ *  according to <tt>range.begin</tt> and <tt>range.end</tt>:
+ *
+ *  - If both <tt>range.begin</tt> and <tt>range.end</tt>
+ *    are non-negative and in-range (less than <tt>self.size</tt>),
+ *    includes elements from index <tt>range.begin</tt>
+ *    through <tt>range.end - 1</tt> (if <tt>range.exclude_end?</tt>),
+ *    or through <tt>range.end</tt> (otherwise):
+ *
+ *      a.values_at(1..2)  # => ["b", "c"]
+ *      a.values_at(1...2) # => ["b"]
+ *
+ *  - If <tt>range.begin</tt> is negative and in-range (greater than or equal to <tt>- self.size</tt>),
+ *    counts backwards from the end of +self+:
+ *
+ *      a.values_at(-2..3) # => ["c", "d"]
+ *
+ *  - If <tt>range.begin</tt> is negative and out-of-range, raises an exception:
+ *
+ *      a.values_at(-5..3) # Raises RangeError.
+ *
+ *  - If <tt>range.end</tt> is positive and out-of-range,
+ *    extends the returned array with +nil+ elements:
+ *
+ *      a.values_at(1..5) # => ["b", "c", "d", nil, nil]
+ *
+ *  - If <tt>range.end</tt> is negative and in-range,
+ *    counts backwards from the end of +self+:
+ *
+ *      a.values_at(1..-2) # => ["b", "c"]
+ *
+ *  - If <tt>range.end</tt> is negative and out-of-range,
+ *    returns an empty array:
+ *
+ *      a.values_at(1..-5) # => []
+ *
+ *  The given ranges may be in any order and may repeat:
+ *
+ *    a.values_at(2..3, 0..1, 2..3) # => ["c", "d", "a", "b", "c", "d"]
+ *
+ *  The given specifiers may be any mixture of indexes and ranges:
+ *
+ *    a.values_at(3, 1..2, 0, 2..3) # => ["d", "b", "c", "a", "c", "d"]
+ *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -3978,23 +3974,22 @@ rb_ary_values_at(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.select {|element| ... } -> new_array
- *    array.select -> new_enumerator
+ *    select {|element| ... } -> new_array
+ *    select -> new_enumerator
+ *    filter {|element| ... } -> new_array
+ *    filter -> new_enumerator
  *
- *  Calls the block, if given, with each element of +self+;
- *  returns a new \Array containing those elements of +self+
+ *  With a block given, calls the block 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.select {|element| element.to_s.start_with?('b') }
+ *    # => ["bar", :bam]
  *
- *    a = [:foo, 'bar', 2, :bam]
- *    a.select # => #<Enumerator: [:foo, "bar", 2, :bam]:select>
+ *  With no block given, returns a new Enumerator.
  *
- *  Array#filter is an alias for Array#select.
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -4049,7 +4044,7 @@ select_bang_ensure(VALUE a)
         rb_ary_modify(ary);
         if (i1 < len) {
             tail = len - i1;
-            RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+            RARRAY_PTR_USE(ary, ptr, {
                     MEMMOVE(ptr + i2, ptr + i1, VALUE, tail);
                 });
         }
@@ -4060,10 +4055,12 @@ select_bang_ensure(VALUE a)
 
 /*
  *  call-seq:
- *    array.select! {|element| ... } -> self or nil
- *    array.select! -> new_enumerator
+ *    select! {|element| ... } -> self or nil
+ *    select! -> new_enumerator
+ *    filter! {|element| ... } -> self or nil
+ *    filter! -> new_enumerator
  *
- *  Calls the block, if given  with each element of +self+;
+ *  With a block given, calls the block 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:
@@ -4073,12 +4070,9 @@ select_bang_ensure(VALUE a)
  *
  *  Returns +nil+ if no elements were removed.
  *
- *  Returns a new \Enumerator if no block given:
+ *  With no block given, returns a new Enumerator.
  *
- *    a = [:foo, 'bar', 2, :bam]
- *    a.select! # => #<Enumerator: [:foo, "bar", 2, :bam]:select!>
- *
- *  Array#filter! is an alias for Array#select!.
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 static VALUE
@@ -4096,20 +4090,18 @@ rb_ary_select_bang(VALUE ary)
 
 /*
  *  call-seq:
- *    array.keep_if {|element| ... } -> self
- *    array.keep_if -> new_enumeration
+ *    keep_if {|element| ... } -> self
+ *    keep_if -> new_enumerator
  *
- *  Retains those elements for which the block returns a truthy value;
- *  deletes all other elements; returns +self+:
+ *  With a block given, calls the block with each element of +self+;
+ *  removes the element from +self+ if the block does not return a truthy value:
  *
  *    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>
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 static VALUE
@@ -4135,38 +4127,39 @@ ary_resize_smaller(VALUE ary, long len)
 
 /*
  *  call-seq:
- *    array.delete(obj) -> deleted_object
- *    array.delete(obj) {|nosuch| ... } -> deleted_object or block_return
+ *    delete(object) -> last_removed_object
+ *    delete(object) {|element| ... } -> last_removed_object or block_return
  *
  *  Removes zero or more elements from +self+.
  *
- *  When no block is given,
- *  removes from +self+ each element +ele+ such that <tt>ele == obj</tt>;
- *  returns the last deleted element:
+ *  With no block given,
+ *  removes from +self+ each element +ele+ such that <tt>ele == object</tt>;
+ *  returns the last removed element:
  *
- *    s1 = 'bar'; s2 = 'bar'
- *    a = [:foo, s1, 2, s2]
- *    a.delete('bar') # => "bar"
- *    a # => [:foo, 2]
+ *    a = [0, 1, 2, 2.0]
+ *    a.delete(2) # => 2.0
+ *    a           # => [0, 1]
  *
- *  Returns +nil+ if no elements removed.
+ *  Returns +nil+ if no elements removed:
  *
- *  When a block is given,
- *  removes from +self+ each element +ele+ such that <tt>ele == obj</tt>.
+ *    a.delete(2) # => nil
+ *
+ *  With a block given,
+ *  removes from +self+ each element +ele+ such that <tt>ele == object</tt>.
  *
  *  If any such elements are found, ignores the block
- *  and returns the last deleted element:
+ *  and returns the last removed element:
  *
- *    s1 = 'bar'; s2 = 'bar'
- *    a = [:foo, s1, 2, s2]
- *    deleted_obj = a.delete('bar') {|obj| fail 'Cannot happen' }
- *    a # => [:foo, 2]
+ *    a = [0, 1, 2, 2.0]
+ *    a.delete(2) {|element| fail 'Cannot happen' } # => 2.0
+ *    a                                             # => [0, 1]
  *
- *  If no such elements are found, returns the block's return value:
+ *  If no such element is found, returns the block's return value:
  *
- *    a = [:foo, 'bar', 2]
- *    a.delete(:nosuch) {|obj| "#{obj} not found" } # => "nosuch not found"
+ *    a.delete(2) {|element| "Element #{element} not found." }
+ *    # => "Element 2 not found."
  *
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 VALUE
@@ -4237,7 +4230,7 @@ rb_ary_delete_at(VALUE ary, long pos)
 
     rb_ary_modify(ary);
     del = RARRAY_AREF(ary, pos);
-    RARRAY_PTR_USE_TRANSIENT(ary, ptr, {
+    RARRAY_PTR_USE(ary, ptr, {
         MEMMOVE(ptr+pos, ptr+pos+1, VALUE, len-pos-1);
     });
     ARY_INCREASE_LEN(ary, -1);
@@ -4247,9 +4240,10 @@ rb_ary_delete_at(VALUE ary, long pos)
 
 /*
  *  call-seq:
- *    array.delete_at(index) -> deleted_object or nil
+ *    delete_at(index) -> removed_object or nil
  *
- *  Deletes an element from +self+, per the given \Integer +index+.
+ *  Removes the element of +self+ at the given +index+, which must be an
+ *  {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects].
  *
  *  When +index+ is non-negative, deletes the element at offset +index+:
  *
@@ -4257,15 +4251,19 @@ rb_ary_delete_at(VALUE ary, long pos)
  *    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.
+ *  When +index+ is out of range, returns +nil+.
+ *
+ *    a = [:foo, 'bar', 2]
+ *    a.delete_at(3)  # => nil
+ *    a.delete_at(-4) # => nil
+ *
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 static VALUE
@@ -4298,7 +4296,7 @@ ary_slice_bang_by_rb_ary_splice(VALUE ary, long pos, long len)
         return rb_ary_new2(0);
     }
     else {
-        VALUE arg2 = rb_ary_new4(len, RARRAY_CONST_PTR_TRANSIENT(ary)+pos);
+        VALUE arg2 = rb_ary_new4(len, RARRAY_CONST_PTR(ary)+pos);
         rb_ary_splice(ary, pos, len, 0, 0);
         return arg2;
     }
@@ -4306,71 +4304,94 @@ ary_slice_bang_by_rb_ary_splice(VALUE ary, long pos, long len)
 
 /*
  *  call-seq:
- *    array.slice!(n) -> object or nil
- *    array.slice!(start, length) -> new_array or nil
- *    array.slice!(range) -> new_array or nil
+ *    slice!(index) -> object or nil
+ *    slice!(start, length) -> new_array or nil
+ *    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+:
+ *  With numeric argument +index+ given,
+ *  removes and returns the element at offset +index+:
  *
- *    a = [:foo, 'bar', 2]
- *    a.slice!(1) # => "bar"
- *    a # => [:foo, 2]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(2)   # => "c"
+ *    a             # => ["a", "b", "d"]
+ *    a.slice!(2.1) # => "d"
+ *    a             # => ["a", "b"]
  *
- *  If +n+ is negative, counts backwards from the end of +self+:
+ *  If +index+ is negative, counts backwards from the end of +self+:
  *
- *    a = [:foo, 'bar', 2]
- *    a.slice!(-1) # => 2
- *    a # => [:foo, "bar"]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(-2) # => "c"
+ *    a            # => ["a", "b", "d"]
  *
- *  If +n+ is out of range, returns +nil+.
+ *  If +index+ 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:
+ *  With numeric arguments +start+ and +length+ given,
+ *  removes +length+ elements from +self+ beginning at zero-based offset +start+;
+ *  returns the removed objects in a new array:
  *
- *    a = [:foo, 'bar', 2]
- *    a.slice!(0, 2) # => [:foo, "bar"]
- *    a # => [2]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(1, 2)     # => ["b", "c"]
+ *    a                  # => ["a", "d"]
+ *    a.slice!(0.1, 1.1) # => ["a"]
+ *    a                  # => ["d"]
+ *
+ *  If +start+ is negative, counts backwards from the end of +self+:
+ *
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(-2, 1) # => ["c"]
+ *    a               # => ["a", "b", "d"]
+ *
+ *  If +start+ is out-of-range, returns +nil+:
+ *
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(5, 1)  # => nil
+ *    a.slice!(-5, 1) # => nil
  *
  *  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]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(2, 50) # => ["c", "d"]
+ *    a               # => ["a", "b"]
  *
  *  If <tt>start == a.size</tt> and +length+ is non-negative,
- *  returns a new empty \Array.
+ *  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:
+ *  With Range argument +range+ given,
+ *  treats <tt>range.min</tt> as +start+ (as above)
+ *  and <tt>range.size</tt> as +length+ (as above):
  *
- *    a = [:foo, 'bar', 2]
- *    a.slice!(1..2) # => ["bar", 2]
- *    a # => [:foo]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(1..2) # => ["b", "c"]
+ *    a              # => ["a", "d"]
  *
- *  If <tt>range.start == a.size</tt>, returns a new empty \Array.
+ *  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+.
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(4..5) # => []
  *
- *  If <tt>range.end</tt> is negative, counts backwards from the end of the array:
+ *  If <tt>range.start</tt> is larger than the array size, returns +nil+:
  *
- *    a = [:foo, 'bar', 2]
- *    a.slice!(0..-2) # => [:foo, "bar"]
- *    a # => [2]
+ *    a = ['a', 'b', 'c', 'd']
+      a.slice!(5..6) # => nil
  *
  *  If <tt>range.start</tt> is negative,
- *  calculates the start index backwards from the end of the array:
+ *  calculates the start index by counting backwards from the end of +self+:
  *
- *    a = [:foo, 'bar', 2]
- *    a.slice!(-2..2) # => ["bar", 2]
- *    a # => [:foo]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(-2..2) # => ["c"]
+ *
+ *  If <tt>range.end</tt> is negative,
+ *  calculates the end index by counting backwards from the end of +self+:
+ *
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.slice!(0..-2) # => ["a", "b", "c"]
  *
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 static VALUE
@@ -4451,10 +4472,11 @@ ary_reject_bang(VALUE ary)
 
 /*
  *  call-seq:
- *    array.reject! {|element| ... } -> self or nil
- *    array.reject! -> new_enumerator
+ *    reject! {|element| ... } -> self or nil
+ *    reject! -> new_enumerator
  *
- *  Removes each element for which the block returns a truthy value.
+ *  With a block given, calls the block with each element of +self+;
+ *  removes each element for which the block returns a truthy value.
  *
  *  Returns +self+ if any elements removed:
  *
@@ -4463,11 +4485,9 @@ ary_reject_bang(VALUE ary)
  *
  *  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!>
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 static VALUE
@@ -4480,21 +4500,19 @@ rb_ary_reject_bang(VALUE ary)
 
 /*
  *  call-seq:
- *    array.reject {|element| ... } -> new_array
- *    array.reject -> new_enumerator
+ *    reject {|element| ... } -> new_array
+ *    reject -> new_enumerator
  *
- *  Returns a new \Array whose elements are all those from +self+
+ *  With a block given, 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>
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -4510,21 +4528,20 @@ rb_ary_reject(VALUE ary)
 
 /*
  *  call-seq:
- *    array.delete_if {|element| ... } -> self
- *    array.delete_if -> Enumerator
+ *    delete_if {|element| ... } -> self
+ *    delete_if -> new_numerator
  *
- *  Removes each element in +self+ for which the block returns a truthy value;
+ *  With a block given, calls the block with each element of +self+;
+ *  removes the element if 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>
+ *  With no block given, returns a new Enumerator.
  *
-3 */
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
+ */
 
 static VALUE
 rb_ary_delete_if(VALUE ary)
@@ -4555,7 +4572,7 @@ take_items(VALUE obj, long n)
     if (!NIL_P(result)) return rb_ary_subseq(result, 0, n);
     result = rb_ary_new2(n);
     args[0] = result; args[1] = (VALUE)n;
-    if (rb_check_block_call(obj, idEach, 0, 0, take_i, (VALUE)args) == Qundef)
+    if (UNDEF_P(rb_check_block_call(obj, idEach, 0, 0, take_i, (VALUE)args)))
         rb_raise(rb_eTypeError, "wrong argument type %"PRIsVALUE" (must respond to :each)",
                  rb_obj_class(obj));
     return result;
@@ -4564,58 +4581,95 @@ take_items(VALUE obj, long n)
 
 /*
  *  call-seq:
- *    array.zip(*other_arrays) -> new_array
- *    array.zip(*other_arrays) {|other_array| ... } -> nil
+ *    zip(*other_arrays) -> new_array
+ *    zip(*other_arrays) {|sub_array| ... } -> nil
+ *
+ *  With no block given, combines +self+ with the collection of +other_arrays+;
+ *  returns a new array of sub-arrays:
+ *
+ *    [0, 1].zip(['zero', 'one'], [:zero, :one])
+ *    # => [[0, "zero", :zero], [1, "one", :one]]
  *
- *  When no block given, returns a new \Array +new_array+ of size <tt>self.size</tt>
- *  whose elements are Arrays.
+ *  Returned:
  *
- *  Each nested array <tt>new_array[n]</tt> is of size <tt>other_arrays.size+1</tt>,
- *  and contains:
+ *  - The outer array is of size <tt>self.size</tt>.
+ *  - Each sub-array is of size <tt>other_arrays.size + 1</tt>.
+ *  - The _nth_ sub-array contains (in order):
  *
- *  - The _nth_ element of +self+.
- *  - The _nth_ element of each of the +other_arrays+.
+ *    - The _nth_ element of +self+.
+ *    - The _nth_ element of each of the other arrays, as available.
  *
- *  If all +other_arrays+ and +self+ are the same size:
+ *  Example:
+ *
+ *    a = [0, 1]
+ *    zipped = a.zip(['zero', 'one'], [:zero, :one])
+ *    # => [[0, "zero", :zero], [1, "one", :one]]
+ *    zipped.size       # => 2 # Same size as a.
+ *    zipped.first.size # => 3 # Size of other arrays plus 1.
+ *
+ *  When the other arrays are all the same size as +self+,
+ *  the returned sub-arrays are a rearrangement containing exactly elements of all the arrays
+ *  (including +self+), with no omissions or additions:
  *
  *    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]]
+ *    pp 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+:
+ *  When one of the other arrays is smaller than +self+,
+ *  pads the corresponding sub-array with +nil+ elements:
  *
  *    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]]
+ *    pp 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:
+ *  When one of the other arrays is larger than +self+,
+ *  _ignores_ its trailing elements:
  *
  *    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]]
+ *    pp 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+:
+ *  With a block given, calls the block with each of the other arrays;
+ *  returns +nil+:
  *
+ *    d = []
  *    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]
- *
+ *    a.zip(b, c) {|sub_array| d.push(sub_array.reverse) } # => nil
+ *    pp d
+ *    # =>
+ *    [[:c0, :b0, :a0],
+ *     [:c1, :b1, :a1],
+ *     [:c2, :b2, :a2],
+ *     [:c3, :b3, :a3]]
+ *
+ *  For an *object* in *other_arrays* that is not actually an array,
+ *  forms the "other array" as <tt>object.to_ary</tt>, if defined,
+ *  or as <tt>object.each.to_a</tt> otherwise.
+ *
+ *  Related: see {Methods for Converting}[rdoc-ref:Array@Methods+for+Converting].
  */
 
 static VALUE
@@ -4678,14 +4732,17 @@ rb_ary_zip(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.transpose -> new_array
+ *    transpose -> new_array
  *
- *  Transposes the rows and columns in an \Array of Arrays;
- *  the nested Arrays must all be the same size:
+ *  Returns a new array that is +self+
+ *  as a {transposed matrix}[https://en.wikipedia.org/wiki/Transpose]:
  *
  *    a = [[:a0, :a1], [:b0, :b1], [:c0, :c1]]
  *    a.transpose # => [[:a0, :b0, :c0], [:a1, :b1, :c1]]
  *
+ *  The elements of +self+ must all be the same size.
+ *
+ *  Related: see {Methods for Converting}[rdoc-ref:Array@Methods+for+Converting].
  */
 
 static VALUE
@@ -4718,13 +4775,17 @@ rb_ary_transpose(VALUE ary)
 
 /*
  *  call-seq:
- *    array.replace(other_array) -> self
+ *    initialize_copy(other_array) -> self
+ *    replace(other_array) -> self
  *
- *  Replaces the content of +self+ with the content of +other_array+; returns +self+:
+ *  Replaces the elements of +self+ with the elements of +other_array+, which must be an
+ *  {array-convertible object}[rdoc-ref:implicit_conversion.rdoc@Array-Convertible+Objects];
+ *  returns +self+:
  *
- *    a = [:foo, 'bar', 2]
- *    a.replace(['foo', :bar, 3]) # => ["foo", :bar, 3]
+ *    a = ['a', 'b', 'c']   # => ["a", "b", "c"]
+ *    a.replace(['d', 'e']) # => ["d", "e"]
  *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 VALUE
@@ -4738,16 +4799,15 @@ rb_ary_replace(VALUE copy, VALUE orig)
 
     /* orig has enough space to embed the contents of orig. */
     if (RARRAY_LEN(orig) <= ary_embed_capa(copy)) {
-        assert(ARY_EMBED_P(copy));
-        ary_memcpy(copy, 0, RARRAY_LEN(orig), RARRAY_CONST_PTR_TRANSIENT(orig));
+        RUBY_ASSERT(ARY_EMBED_P(copy));
+        ary_memcpy(copy, 0, RARRAY_LEN(orig), RARRAY_CONST_PTR(orig));
         ARY_SET_EMBED_LEN(copy, RARRAY_LEN(orig));
     }
-#if USE_RVARGC
     /* orig is embedded but copy does not have enough space to embed the
      * contents of orig. */
     else if (ARY_EMBED_P(orig)) {
         long len = ARY_EMBED_LEN(orig);
-        VALUE *ptr = ary_heap_alloc(copy, len);
+        VALUE *ptr = ary_heap_alloc_buffer(len);
 
         FL_UNSET_EMBED(copy);
         ARY_SET_PTR(copy, ptr);
@@ -4756,9 +4816,8 @@ rb_ary_replace(VALUE copy, VALUE orig)
 
         // No allocation and exception expected that could leave `copy` in a
         // bad state from the edits above.
-        ary_memcpy(copy, 0, len, RARRAY_CONST_PTR_TRANSIENT(orig));
+        ary_memcpy(copy, 0, len, RARRAY_CONST_PTR(orig));
     }
-#endif
     /* Otherwise, orig is on heap and copy does not have enough space to embed
      * the contents of orig. */
     else {
@@ -4767,6 +4826,8 @@ rb_ary_replace(VALUE copy, VALUE orig)
         ARY_SET_PTR(copy, ARY_HEAP_PTR(orig));
         ARY_SET_LEN(copy, ARY_HEAP_LEN(orig));
         rb_ary_set_shared(copy, shared_root);
+
+        RUBY_ASSERT(RB_OBJ_SHAREABLE_P(copy) ? RB_OBJ_SHAREABLE_P(shared_root) : 1);
     }
     ary_verify(copy);
     return copy;
@@ -4774,13 +4835,14 @@ rb_ary_replace(VALUE copy, VALUE orig)
 
 /*
  *  call-seq:
- *     array.clear -> self
+ *    clear -> self
  *
- *  Removes all elements from +self+:
+ *  Removes all elements from +self+; returns +self+:
  *
  *    a = [:foo, 'bar', 2]
  *    a.clear # => []
  *
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 VALUE
@@ -4788,11 +4850,9 @@ rb_ary_clear(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);
-        }
+        rb_ary_unshare(ary);
+        FL_SET_EMBED(ary);
+        ARY_SET_EMBED_LEN(ary, 0);
     }
     else {
         ARY_SET_LEN(ary, 0);
@@ -4806,198 +4866,182 @@ rb_ary_clear(VALUE 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
+ *    fill(object, start = nil, count = nil) -> self
+ *    fill(object, range) -> self
+ *    fill(start = nil, count = nil) {|element| ... } -> self
+ *    fill(range) {|element| ... } -> self
  *
- *  Replaces specified elements in +self+ with specified objects; returns +self+.
+ *  Replaces selected elements in +self+;
+ *  may add elements to +self+;
+ *  always returns +self+ (never a new array).
  *
- *  With argument +obj+ and no block given, replaces all elements with that one object:
+ *  In brief:
  *
- *    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:
+ *    # Non-negative start.
+ *    ['a', 'b', 'c', 'd'].fill('-', 1, 2)          # => ["a", "-", "-", "d"]
+ *    ['a', 'b', 'c', 'd'].fill(1, 2) {|e| e.to_s } # => ["a", "1", "2", "d"]
  *
- *    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:
+ *    # Extends with specified values if necessary.
+ *    ['a', 'b', 'c', 'd'].fill('-', 3, 2)          # => ["a", "b", "c", "-", "-"]
+ *    ['a', 'b', 'c', 'd'].fill(3, 2) {|e| e.to_s } # => ["a", "b", "c", "3", "4"]
  *
- *    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"]
+ *    # Fills with nils if necessary.
+ *    ['a', 'b', 'c', 'd'].fill('-', 6, 2)          # => ["a", "b", "c", "d", nil, nil, "-", "-"]
+ *    ['a', 'b', 'c', 'd'].fill(6, 2) {|e| e.to_s } # => ["a", "b", "c", "d", nil, nil, "6", "7"]
  *
- *  If +start+ is negative, counts from the end (starting index is <tt>start + array.size</tt>):
+ *    # For negative start, counts backwards from the end.
+ *    ['a', 'b', 'c', 'd'].fill('-', -3, 3)          # => ["a", "-", "-", "-"]
+ *    ['a', 'b', 'c', 'd'].fill(-3, 3) {|e| e.to_s } # => ["a", "1", "2", "3"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(:X, -2) # => ["a", "b", :X, :X]
+ *    # Range.
+ *    ['a', 'b', 'c', 'd'].fill('-', 1..2)          # => ["a", "-", "-", "d"]
+ *    ['a', 'b', 'c', 'd'].fill(1..2) {|e| e.to_s } # => ["a", "1", "2", "d"]
  *
- *  If +start+ is too small (less than and far from zero), replaces all elements:
+ *  When arguments +start+ and +count+ are given,
+ *  they select the elements of +self+ to be replaced;
+ *  each must be an
+ *  {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects]
+ *  (or +nil+):
  *
- *    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]
+ *  - +start+ specifies the zero-based offset of the first element to be replaced;
+ *    +nil+ means zero.
+ *  - +count+ is the number of consecutive elements to be replaced;
+ *    +nil+ means "all the rest."
  *
- *  With arguments +obj+, \Integer +start+, and \Integer +length+, and no block given,
- *  replaces elements based on the given +start+ and +length+.
+ *  With argument +object+ given,
+ *  that one object is used for all replacements:
  *
- *  If +start+ is in range, replaces +length+ elements beginning at offset +start+:
+ *    o = Object.new           # => #<Object:0x0000014e7bff7600>
+ *    a = ['a', 'b', 'c', 'd'] # => ["a", "b", "c", "d"]
+ *    a.fill(o, 1, 2)
+ *    # => ["a", #<Object:0x0000014e7bff7600>, #<Object:0x0000014e7bff7600>, "d"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(:X, 1, 1) # => ["a", :X, "c", "d"]
+ *  With a block given, the block is called once for each element to be replaced;
+ *  the value passed to the block is the _index_ of the element to be replaced
+ *  (not the element itself);
+ *  the block's return value replaces the element:
  *
- *  If +start+ is negative, counts from the end:
+ *    a = ['a', 'b', 'c', 'd']               # => ["a", "b", "c", "d"]
+ *    a.fill(1, 2) {|element| element.to_s } # => ["a", "1", "2", "d"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(:X, -2, 1) # => ["a", "b", :X, "d"]
+ *  For arguments +start+ and +count+:
  *
- *  If +start+ is large (<tt>start >= array.size</tt>), extends +self+ with +nil+:
+ *  - If +start+ is non-negative,
+ *    replaces +count+ elements beginning at offset +start+:
  *
- *    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]
+ *      ['a', 'b', 'c', 'd'].fill('-', 0, 2) # => ["-", "-", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 1, 2) # => ["a", "-", "-", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 2, 2) # => ["a", "b", "-", "-"]
  *
- *  If +length+ is zero or negative, replaces no elements:
+ *      ['a', 'b', 'c', 'd'].fill(0, 2) {|e| e.to_s } # => ["0", "1", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(1, 2) {|e| e.to_s } # => ["a", "1", "2", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(2, 2) {|e| e.to_s } # => ["a", "b", "2", "3"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(:X, 1, 0) # => ["a", "b", "c", "d"]
- *    a.fill(:X, 1, -1) # => ["a", "b", "c", "d"]
+ *    Extends +self+ if necessary:
  *
- *  With arguments +obj+ and \Range +range+, and no block given,
- *  replaces elements based on the given range.
+ *      ['a', 'b', 'c', 'd'].fill('-', 3, 2) # => ["a", "b", "c", "-", "-"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 4, 2) # => ["a", "b", "c", "d", "-", "-"]
  *
- *  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', 'b', 'c', 'd'].fill(3, 2) {|e| e.to_s } # => ["a", "b", "c", "3", "4"]
+ *      ['a', 'b', 'c', 'd'].fill(4, 2) {|e| e.to_s } # => ["a", "b", "c", "d", "4", "5"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(:X, (1..1)) # => ["a", :X, "c", "d"]
+ *    Fills with +nil+ if necessary:
  *
- *  If <tt>range.first</tt> is negative, replaces no elements:
+ *      ['a', 'b', 'c', 'd'].fill('-', 5, 2) # => ["a", "b", "c", "d", nil, "-", "-"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 6, 2) # => ["a", "b", "c", "d", nil, nil, "-", "-"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(:X, (-1..1)) # => ["a", "b", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(5, 2) {|e| e.to_s } # => ["a", "b", "c", "d", nil, "5", "6"]
+ *      ['a', 'b', 'c', 'd'].fill(6, 2) {|e| e.to_s } # => ["a", "b", "c", "d", nil, nil, "6", "7"]
  *
- *  If <tt>range.last</tt> is negative, counts from the end:
+ *    Does nothing if +count+ is non-positive:
  *
- *    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"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 2, 0)    # => ["a", "b", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 2, -100) # => ["a", "b", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 6, -100) # => ["a", "b", "c", "d"]
  *
- *  If <tt>range.last</tt> and <tt>range.last</tt> are both negative,
- *  both count from the end of the array:
+ *      ['a', 'b', 'c', 'd'].fill(2, 0) {|e| fail 'Cannot happen' }    # => ["a", "b", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(2, -100) {|e| fail 'Cannot happen' } # => ["a", "b", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(6, -100) {|e| fail 'Cannot happen' } # => ["a", "b", "c", "d"]
  *
- *    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"]
+ *  - If +start+ is negative, counts backwards from the end of +self+:
  *
- *  With no arguments and a block given, calls the block with each index;
- *  replaces the corresponding element with the block's return value:
+ *      ['a', 'b', 'c', 'd'].fill('-', -4, 3) # => ["-", "-", "-", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', -3, 3) # => ["a", "-", "-", "-"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill { |index| "new_#{index}" } # => ["new_0", "new_1", "new_2", "new_3"]
+ *      ['a', 'b', 'c', 'd'].fill(-4, 3) {|e| e.to_s } # => ["0", "1", "2", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(-3, 3) {|e| e.to_s } # => ["a", "1", "2", "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.
+ *    Extends +self+ if necessary:
  *
- *  If start is in range (<tt>0 <= start < array.size</tt>),
- *  replaces from offset +start+ to the end:
+ *      ['a', 'b', 'c', 'd'].fill('-', -2, 3) # => ["a", "b", "-", "-", "-"]
+ *      ['a', 'b', 'c', 'd'].fill('-', -1, 3) # => ["a", "b", "c", "-", "-", "-"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(1) { |index| "new_#{index}" } # => ["a", "new_1", "new_2", "new_3"]
+ *      ['a', 'b', 'c', 'd'].fill(-2, 3) {|e| e.to_s } # => ["a", "b", "2", "3", "4"]
+ *      ['a', 'b', 'c', 'd'].fill(-1, 3) {|e| e.to_s } # => ["a", "b", "c", "3", "4", "5"]
  *
- *  If +start+ is too large(<tt>start >= array.size</tt>), does nothing:
+ *    Starts at the beginning of +self+ if +start+ is negative and out-of-range:
  *
- *    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"]
+ *      ['a', 'b', 'c', 'd'].fill('-', -5, 2) # => ["-", "-", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', -6, 2) # => ["-", "-", "c", "d"]
  *
- *  If +start+ is negative, counts from the end:
+ *      ['a', 'b', 'c', 'd'].fill(-5, 2) {|e| e.to_s } # => ["0", "1", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(-6, 2) {|e| e.to_s } # => ["0", "1", "c", "d"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(-2) { |index| "new_#{index}" } # => ["a", "b", "new_2", "new_3"]
+ *    Does nothing if +count+ is non-positive:
  *
- *  If start is too small (<tt>start <= -array.size</tt>, replaces all elements:
+ *      ['a', 'b', 'c', 'd'].fill('-', -2, 0)  # => ["a", "b", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', -2, -1) # => ["a", "b", "c", "d"]
  *
- *    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"]
+ *      ['a', 'b', 'c', 'd'].fill(-2, 0) {|e| fail 'Cannot happen' }  # => ["a", "b", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(-2, -1) {|e| fail 'Cannot happen' } # => ["a", "b", "c", "d"]
  *
- *  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.
+ *  When argument +range+ is given,
+ *  it must be a Range object whose members are numeric;
+ *  its +begin+ and +end+ values determine the elements of +self+
+ *  to be replaced:
  *
- *  If +start+ is in range, replaces +length+ elements beginning at offset +start+:
+ *  - If both +begin+ and +end+ are positive, they specify the first and last elements
+ *    to be replaced:
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(1, 1) { |index| "new_#{index}" } # => ["a", "new_1", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 1..2)          # => ["a", "-", "-", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(1..2) {|e| e.to_s } # => ["a", "1", "2", "d"]
  *
- *  If start is negative, counts from the end:
+ *    If +end+ is smaller than +begin+, replaces no elements:
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(-2, 1) { |index| "new_#{index}" } # => ["a", "b", "new_2", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 2..1)          # => ["a", "b", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(2..1) {|e| e.to_s } # => ["a", "b", "c", "d"]
  *
- *  If +start+ is large (<tt>start >= array.size</tt>), extends +self+ with +nil+:
+ *  - If either is negative (or both are negative), counts backwards from the end of +self+:
  *
- *    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"]
+ *      ['a', 'b', 'c', 'd'].fill('-', -3..2)  # => ["a", "-", "-", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 1..-2)  # => ["a", "-", "-", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', -3..-2) # => ["a", "-", "-", "d"]
  *
- *  If +length+ is zero or less, replaces no elements:
+ *      ['a', 'b', 'c', 'd'].fill(-3..2) {|e| e.to_s }  # => ["a", "1", "2", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(1..-2) {|e| e.to_s }  # => ["a", "1", "2", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(-3..-2) {|e| e.to_s } # => ["a", "1", "2", "d"]
  *
- *    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"]
+ *  - If the +end+ value is excluded (see Range#exclude_end?), omits the last replacement:
  *
- *  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.
+ *      ['a', 'b', 'c', 'd'].fill('-', 1...2)  # => ["a", "-", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill('-', 1...-2) # => ["a", "-", "c", "d"]
  *
- *  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', 'b', 'c', 'd'].fill(1...2) {|e| e.to_s }  # => ["a", "1", "c", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(1...-2) {|e| e.to_s } # => ["a", "1", "c", "d"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(1..1) { |index| "new_#{index}" } # => ["a", "new_1", "c", "d"]
+ *  - If the range is endless (see {Endless Ranges}[rdoc-ref:Range@Endless+Ranges]),
+ *    replaces elements to the end of +self+:
  *
- *  If +range.first+ is negative, does nothing:
+ *      ['a', 'b', 'c', 'd'].fill('-', 1..)          # => ["a", "-", "-", "-"]
+ *      ['a', 'b', 'c', 'd'].fill(1..) {|e| e.to_s } # => ["a", "1", "2", "3"]
  *
- *    a = ['a', 'b', 'c', 'd']
- *    a.fill(-1..1) { |index| fail 'Cannot happen' } # => ["a", "b", "c", "d"]
+ *  - If the range is beginless (see {Beginless Ranges}[rdoc-ref:Range@Beginless+Ranges]),
+ *    replaces elements from the beginning of +self+:
  *
- *  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"]
+ *      ['a', 'b', 'c', 'd'].fill('-', ..2)          # => ["-", "-", "-", "d"]
+ *      ['a', 'b', 'c', 'd'].fill(..2) {|e| e.to_s } # => ["0", "1", "2", "d"]
  *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 static VALUE
@@ -5048,7 +5092,7 @@ rb_ary_fill(int argc, VALUE *argv, VALUE ary)
         ARY_SET_LEN(ary, end);
     }
 
-    if (item == Qundef) {
+    if (UNDEF_P(item)) {
         VALUE v;
         long i;
 
@@ -5066,15 +5110,15 @@ rb_ary_fill(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array + other_array -> new_array
+ *    self + other_array -> new_array
  *
- *  Returns a new \Array containing all elements of +array+
+ *  Returns a new array containing all elements of +self+
  *  followed by all elements of +other_array+:
  *
  *    a = [0, 1] + [2, 3]
  *    a # => [0, 1, 2, 3]
  *
- *  Related: #concat.
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 VALUE
@@ -5089,8 +5133,8 @@ rb_ary_plus(VALUE x, VALUE y)
     len = xlen + ylen;
     z = rb_ary_new2(len);
 
-    ary_memcpy(z, 0, xlen, RARRAY_CONST_PTR_TRANSIENT(x));
-    ary_memcpy(z, xlen, ylen, RARRAY_CONST_PTR_TRANSIENT(y));
+    ary_memcpy(z, 0, xlen, RARRAY_CONST_PTR(x));
+    ary_memcpy(z, xlen, ylen, RARRAY_CONST_PTR(y));
     ARY_SET_LEN(z, len);
     return z;
 }
@@ -5100,7 +5144,7 @@ ary_append(VALUE x, VALUE y)
 {
     long n = RARRAY_LEN(y);
     if (n > 0) {
-        rb_ary_splice(x, RARRAY_LEN(x), 0, RARRAY_CONST_PTR_TRANSIENT(y), n);
+        rb_ary_splice(x, RARRAY_LEN(x), 0, RARRAY_CONST_PTR(y), n);
     }
     RB_GC_GUARD(y);
     return x;
@@ -5108,12 +5152,15 @@ ary_append(VALUE x, VALUE y)
 
 /*
  *  call-seq:
- *    array.concat(*other_arrays) -> self
+ *    concat(*other_arrays) -> self
  *
- *  Adds to +array+ all elements from each \Array in +other_arrays+; returns +self+:
+ *  Adds to +self+ 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]
+ *    a.concat(['two', 'three'], [:four, :five], a)
+ *    # => [0, 1, "two", "three", :four, :five, 0, 1]
+ *
+ *  Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 static VALUE
@@ -5145,19 +5192,19 @@ rb_ary_concat(VALUE x, VALUE y)
 
 /*
  *  call-seq:
- *    array * n -> new_array
- *    array * string_separator -> new_string
+ *    self * n -> new_array
+ *    self * string_separator -> new_string
  *
- *  When non-negative argument \Integer +n+ is given,
- *  returns a new \Array built by concatenating the +n+ copies of +self+:
+ *  When non-negative integer argument +n+ is given,
+ *  returns a new array built by concatenating +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>:
+ *  When string argument +string_separator+ is given,
+ *  equivalent to <tt>self.join(string_separator)</tt>:
  *
- *    [0, [0, 1], {foo: 0}] * ', ' # => "0, 0, 1, {:foo=>0}"
+ *    [0, [0, 1], {foo: 0}] * ', ' # => "0, 0, 1, {foo: 0}"
  *
  */
 
@@ -5189,16 +5236,16 @@ rb_ary_times(VALUE ary, VALUE times)
     ary2 = ary_new(rb_cArray, len);
     ARY_SET_LEN(ary2, len);
 
-    ptr = RARRAY_CONST_PTR_TRANSIENT(ary);
+    ptr = RARRAY_CONST_PTR(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));
+            ary_memcpy(ary2, t, t, RARRAY_CONST_PTR(ary2));
             t *= 2;
         }
         if (t < len) {
-            ary_memcpy(ary2, t, len-t, RARRAY_CONST_PTR_TRANSIENT(ary2));
+            ary_memcpy(ary2, t, len-t, RARRAY_CONST_PTR(ary2));
         }
     }
   out:
@@ -5207,17 +5254,18 @@ rb_ary_times(VALUE ary, VALUE times)
 
 /*
  *  call-seq:
- *    array.assoc(obj) -> found_array or nil
+ *    assoc(object) -> found_array or nil
  *
- *  Returns the first element in +self+ that is an \Array
- *  whose first element <tt>==</tt> +obj+:
+ *  Returns the first element +ele+ in +self+ such that +ele+ is an array
+ *  and <tt>ele[0] == object</tt>:
  *
  *    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.
+ *  Related: Array#rassoc;
+ *  see also {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 VALUE
@@ -5237,17 +5285,19 @@ rb_ary_assoc(VALUE ary, VALUE key)
 
 /*
  *  call-seq:
- *    array.rassoc(obj) -> found_array or nil
+ *    rassoc(object) -> found_array or nil
  *
- *  Returns the first element in +self+ that is an \Array
- *  whose second element <tt>==</tt> +obj+:
+ *  Returns the first element +ele+ in +self+ such that +ele+ is an array
+ *  and <tt>ele[1] == object</tt>:
  *
  *    a = [{foo: 0}, [2, 4], [4, 5, 6], [4, 5]]
  *    a.rassoc(4) # => [2, 4]
+ *    a.rassoc(5) # => [4, 5, 6]
  *
  *  Returns +nil+ if no such element is found.
  *
- *  Related: #assoc.
+ *  Related: Array#assoc;
+ *  see also {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 VALUE
@@ -5257,7 +5307,7 @@ rb_ary_rassoc(VALUE ary, VALUE value)
     VALUE v;
 
     for (i = 0; i < RARRAY_LEN(ary); ++i) {
-        v = RARRAY_AREF(ary, i);
+        v = rb_check_array_type(RARRAY_AREF(ary, i));
         if (RB_TYPE_P(v, T_ARRAY) &&
             RARRAY_LEN(v) > 1 &&
             rb_equal(RARRAY_AREF(v, 1), value))
@@ -5302,20 +5352,26 @@ recursive_equal(VALUE ary1, VALUE ary2, int recur)
 
 /*
  *  call-seq:
- *    array == other_array -> true or false
+ *    self == 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>:
+ *  Returns whether both:
  *
- *    a0 = [:foo, 'bar', 2]
- *    a1 = [:foo, 'bar', 2.0]
- *    a1 == a0 # => true
- *    [] == [] # => true
+ *  - +self+ and +other_array+ are the same size.
+ *  - Their corresponding elements are the same;
+ *    that is, for each index +i+ in <tt>(0...self.size)</tt>,
+ *    <tt>self[i] == other_array[i]</tt>.
  *
- *  Otherwise, returns +false+.
+ *  Examples:
+ *
+ *    [:foo, 'bar', 2] == [:foo, 'bar', 2]   # => true
+ *    [:foo, 'bar', 2] == [:foo, 'bar', 2.0] # => true
+ *    [:foo, 'bar', 2] == [:foo, 'bar']      # => false # Different sizes.
+ *    [:foo, 'bar', 2] == [:foo, 'bar', 3]   # => false # Different elements.
  *
  *  This method is different from method Array#eql?,
  *  which compares elements using <tt>Object#eql?</tt>.
+ *
+ *  Related: see {Methods for Comparing}[rdoc-ref:Array@Methods+for+Comparing].
  */
 
 static VALUE
@@ -5329,7 +5385,7 @@ rb_ary_equal(VALUE ary1, VALUE ary2)
         return rb_equal(ary2, ary1);
     }
     if (RARRAY_LEN(ary1) != RARRAY_LEN(ary2)) return Qfalse;
-    if (RARRAY_CONST_PTR_TRANSIENT(ary1) == RARRAY_CONST_PTR_TRANSIENT(ary2)) return Qtrue;
+    if (RARRAY_CONST_PTR(ary1) == RARRAY_CONST_PTR(ary2)) return Qtrue;
     return rb_exec_recursive_paired(recursive_equal, ary1, ary2, ary2);
 }
 
@@ -5348,10 +5404,10 @@ recursive_eql(VALUE ary1, VALUE ary2, int recur)
 
 /*
  *  call-seq:
- *    array.eql? other_array -> true or false
+ *    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>:
+ *  and if, for each index +i+ in +self+, <tt>self[i].eql?(other_array[i])</tt>:
  *
  *    a0 = [:foo, 'bar', 2]
  *    a1 = [:foo, 'bar', 2]
@@ -5361,6 +5417,8 @@ recursive_eql(VALUE ary1, VALUE ary2, int recur)
  *
  *  This method is different from method Array#==,
  *  which compares using method <tt>Object#==</tt>.
+ *
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -5369,49 +5427,71 @@ rb_ary_eql(VALUE ary1, VALUE ary2)
     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;
+    if (RARRAY_CONST_PTR(ary1) == RARRAY_CONST_PTR(ary2)) return Qtrue;
     return rb_exec_recursive_paired(recursive_eql, ary1, ary2, ary2);
 }
 
+static VALUE
+ary_hash_values(long len, const VALUE *elements, const VALUE ary)
+{
+    long i;
+    st_index_t h;
+    VALUE n;
+
+    h = rb_hash_start(len);
+    h = rb_hash_uint(h, (st_index_t)rb_ary_hash_values);
+    for (i=0; i<len; i++) {
+        n = rb_hash(elements[i]);
+        h = rb_hash_uint(h, NUM2LONG(n));
+        if (ary) {
+            len = RARRAY_LEN(ary);
+            elements = RARRAY_CONST_PTR(ary);
+        }
+    }
+    h = rb_hash_end(h);
+    return ST2FIX(h);
+}
+
+VALUE
+rb_ary_hash_values(long len, const VALUE *elements)
+{
+    return ary_hash_values(len, elements, 0);
+}
+
 /*
  *  call-seq:
- *    array.hash -> integer
+ *    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?):
+ *  Two arrays with the same content will have the same hash value
+ *  (and will compare using eql?):
  *
- *    [0, 1, 2].hash == [0, 1, 2].hash # => true
- *    [0, 1, 2].hash == [0, 1, 3].hash # => false
+ *    ['a', 'b'].hash == ['a', 'b'].hash # => true
+ *    ['a', 'b'].hash == ['a', 'c'].hash # => false
+ *    ['a', 'b'].hash == ['a'].hash      # => false
  *
  */
 
 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 = rb_hash_end(h);
-    return ST2FIX(h);
+    RBIMPL_ASSERT_OR_ASSUME(ary);
+    return ary_hash_values(RARRAY_LEN(ary), RARRAY_CONST_PTR(ary), ary);
 }
 
 /*
  *  call-seq:
- *    array.include?(obj) -> true or false
+ *    include?(object) -> true or false
+ *
+ *  Returns whether for some element +element+ in +self+,
+ *  <tt>object == element</tt>:
  *
- *  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?(2.0) # => true
+ *    [0, 1, 2].include?(2.1) # => false
  *
- *    [0, 1, 2].include?(2) # => true
- *    [0, 1, 2].include?(3) # => false
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 VALUE
@@ -5466,33 +5546,40 @@ recursive_cmp(VALUE ary1, VALUE ary2, int recur)
 
 /*
  *  call-seq:
- *    array <=> other_array -> -1, 0, or 1
+ *    self <=> 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, 0, or 1 as +self+ is determined
+ *  to be less than, equal to, or greater than +other_array+.
  *
- *  Returns -1 if any result is -1:
+ *  Iterates over each index +i+ in <tt>(0...self.size)</tt>:
  *
- *    [0, 1, 2] <=> [0, 1, 3] # => -1
+ *  - Computes <tt>result[i]</tt> as <tt>self[i] <=> other_array[i]</tt>.
+ *  - Immediately returns 1 if <tt>result[i]</tt> is 1:
  *
- *  Returns 1 if any result is 1:
+ *      [0, 1, 2] <=> [0, 0, 2] # => 1
  *
- *    [0, 1, 2] <=> [0, 1, 1] # => 1
+ *  - Immediately returns -1 if <tt>result[i]</tt> is -1:
  *
- *  When all results are zero:
+ *      [0, 1, 2] <=> [0, 2, 2] # => -1
  *
- *  - Returns -1 if +array+ is smaller than +other_array+:
+ *  - Continues if <tt>result[i]</tt> is 0.
  *
- *      [0, 1, 2] <=> [0, 1, 2, 3] # => -1
+ *  When every +result+ is 0,
+ *  returns <tt>self.size <=> other_array.size</tt>
+ *  (see Integer#<=>):
  *
- *  - Returns 1 if +array+ is larger than +other_array+:
+ *    [0, 1, 2] <=> [0, 1]        # => 1
+ *    [0, 1, 2] <=> [0, 1, 2]     # => 0
+ *    [0, 1, 2] <=> [0, 1, 2, 3]  # => -1
  *
- *      [0, 1, 2] <=> [0, 1] # => 1
+ *  Note that when +other_array+ is larger than +self+,
+ *  its trailing elements do not affect the result:
  *
- *  - Returns 0 if +array+ and +other_array+ are the same size:
- *
- *      [0, 1, 2] <=> [0, 1, 2] # => 0
+ *    [0, 1, 2] <=> [0, 1, 2, -3] # => -1
+ *    [0, 1, 2] <=> [0, 1, 2, 0]  # => -1
+ *    [0, 1, 2] <=> [0, 1, 2, 3]  # => -1
  *
+ *  Related: see {Methods for Comparing}[rdoc-ref:Array@Methods+for+Comparing].
  */
 
 VALUE
@@ -5505,7 +5592,7 @@ rb_ary_cmp(VALUE ary1, VALUE 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;
+    if (!UNDEF_P(v)) return v;
     len = RARRAY_LEN(ary1) - RARRAY_LEN(ary2);
     if (len == 0) return INT2FIX(0);
     if (len > 0) return INT2FIX(1);
@@ -5560,31 +5647,22 @@ ary_make_hash_by(VALUE 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
+ *    self - 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:
+ *  Returns a new array containing only those elements of +self+
+ *  that are not found in +other_array+;
+ *  the order from +self+ 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]
+ *    [0, 1, 1, 2, 1, 1, 3, 1, 1] - [1]             # => [0, 2, 3]
+ *    [0, 1, 1, 2, 1, 1, 3, 1, 1] - [3, 2, 0, :foo] # => [1, 1, 1, 1, 1, 1]
+ *    [0, 1, 2] - [:foo]                            # => [0, 1, 2]
  *
- *  Related: Array#difference.
+ *  Element are compared using method <tt>#eql?</tt>
+ *  (as defined in each element of +self+).
+ *
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 VALUE
@@ -5612,25 +5690,27 @@ rb_ary_diff(VALUE ary1, VALUE ary2)
         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
+ *    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+;
+ *  Returns a new array containing only those elements from +self+
+ *  that are not found in any of the given +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]
+ *    [0, 1, 2, 3].difference([3, 0], [1, 3])     # => [2]
+ *    [0, 1, 2].difference([4])                   # => [0, 1, 2]
+ *    [0, 1, 2].difference                        # => [0, 1, 2]
  *
- *  Returns a copy of +self+ if no arguments given.
+ *  Returns a copy of +self+ if no arguments are given.
  *
- *  Related: Array#-.
+ *  Related: Array#-;
+ *  see also {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 static VALUE
@@ -5654,7 +5734,7 @@ rb_ary_difference_multi(int argc, VALUE *argv, VALUE ary)
         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))
+                if (rb_hash_stlike_lookup(argv[j], elt, NULL))
                     break;
             }
             else {
@@ -5672,19 +5752,25 @@ rb_ary_difference_multi(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array & other_array -> new_array
+ *    self & 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>:
+ *  Returns a new array containing the _intersection_ of +self+ and +other_array+;
+ *  that is, containing those elements found in both +self+ and +other_array+:
  *
  *    [0, 1, 2, 3] & [1, 2] # => [1, 2]
- *    [0, 1, 0, 1] & [0, 1] # => [0, 1]
  *
- *  Preserves order from +array+:
+ *  Omits duplicates:
+ *
+ *    [0, 1, 1, 0] & [0, 1] # => [0, 1]
+ *
+ *  Preserves order from +self+:
  *
  *    [0, 1, 2] & [3, 2, 1, 0] # => [0, 1, 2]
  *
- *  Related: Array#intersection.
+ *  Identifies common elements using method <tt>#eql?</tt>
+ *  (as defined in each element of +self+).
+ *
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 
@@ -5718,29 +5804,29 @@ rb_ary_and(VALUE ary1, VALUE ary2)
             rb_ary_push(ary3, v);
         }
     }
-    ary_recycle_hash(hash);
 
     return ary3;
 }
 
 /*
  *  call-seq:
- *    array.intersection(*other_arrays) -> new_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>:
+ *  Returns a new array containing each element in +self+ that is +#eql?+
+ *  to at least one element in each of the given +other_arrays+;
+ *  duplicates are omitted:
  *
- *    [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+:
+ *  Each element must correctly implement method <tt>#hash</tt>.
+ *
+ *  Order from +self+ is preserved:
  *
  *    [0, 1, 2].intersection([2, 1, 0]) # => [0, 1, 2]
  *
- *  Returns a copy of +self+ if no arguments given.
+ *  Returns a copy of +self+ if no arguments are given.
  *
- *  Related: Array#&.
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 static VALUE
@@ -5789,9 +5875,9 @@ rb_ary_union_hash(VALUE hash, VALUE ary2)
 
 /*
  *  call-seq:
- *    array | other_array -> new_array
+ *    self | other_array -> new_array
  *
- *  Returns the union of +array+ and \Array +other_array+;
+ *  Returns the union of +self+ and +other_array+;
  *  duplicates are removed; order is preserved;
  *  items are compared using <tt>eql?</tt>:
  *
@@ -5799,17 +5885,17 @@ rb_ary_union_hash(VALUE hash, VALUE ary2)
  *    [0, 1, 1] | [2, 2, 3] # => [0, 1, 2, 3]
  *    [0, 1, 2] | [3, 2, 1, 0] # => [0, 1, 2, 3]
  *
- *  Related: Array#union.
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 static VALUE
 rb_ary_or(VALUE ary1, VALUE ary2)
 {
-    VALUE hash, ary3;
+    VALUE hash;
 
     ary2 = to_ary(ary2);
     if (RARRAY_LEN(ary1) + RARRAY_LEN(ary2) <= SMALL_ARRAY_LEN) {
-        ary3 = rb_ary_new();
+        VALUE ary3 = rb_ary_new();
         rb_ary_union(ary3, ary1);
         rb_ary_union(ary3, ary2);
         return ary3;
@@ -5818,25 +5904,30 @@ rb_ary_or(VALUE ary1, VALUE ary2)
     hash = ary_make_hash(ary1);
     rb_ary_union_hash(hash, ary2);
 
-    ary3 = rb_hash_values(hash);
-    ary_recycle_hash(hash);
-    return ary3;
+    return rb_hash_values(hash);
 }
 
 /*
  *  call-seq:
- *    array.union(*other_arrays) -> new_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>:
+ *  Returns a new array that is the union of the elements of +self+
+ *  and all given arrays +other_arrays+;
+ *  items are compared using <tt>eql?</tt>:
  *
  *    [0, 1, 2, 3].union([4, 5], [6, 7]) # => [0, 1, 2, 3, 4, 5, 6, 7]
+ *
+ *  Removes duplicates (preserving the first found):
+ *
  *    [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.
+ *  Preserves order (preserving the position of the first found):
  *
- *  Related: Array#|.
+ *    [3, 2, 1, 0].union([5, 3], [4, 2]) # => [3, 2, 1, 0, 5, 4]
+ *
+ *  With no arguments given, returns a copy of +self+.
+ *
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 static VALUE
@@ -5844,7 +5935,7 @@ rb_ary_union_multi(int argc, VALUE *argv, VALUE ary)
 {
     int i;
     long sum;
-    VALUE hash, ary_union;
+    VALUE hash;
 
     sum = RARRAY_LEN(ary);
     for (i = 0; i < argc; i++) {
@@ -5853,7 +5944,7 @@ rb_ary_union_multi(int argc, VALUE *argv, VALUE ary)
     }
 
     if (sum <= SMALL_ARRAY_LEN) {
-        ary_union = rb_ary_new();
+        VALUE ary_union = rb_ary_new();
 
         rb_ary_union(ary_union, ary);
         for (i = 0; i < argc; i++) rb_ary_union(ary_union, argv[i]);
@@ -5864,24 +5955,21 @@ rb_ary_union_multi(int argc, VALUE *argv, VALUE ary)
     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;
+    return rb_hash_values(hash);
 }
 
 /*
  *  call-seq:
- *     ary.intersect?(other_ary)   -> true or false
+ *    intersect?(other_array) -> true or false
  *
- *  Returns +true+ if the array and +other_ary+ have at least one element in
- *  common, otherwise returns +false+:
+ *  Returns whether +other_array+ has at least one element that is +#eql?+ to some element of +self+:
  *
- *     a = [ 1, 2, 3 ]
- *     b = [ 3, 4, 5 ]
- *     c = [ 5, 6, 7 ]
- *     a.intersect?(b)   #=> true
- *     a.intersect?(c)   #=> false
+ *    [1, 2, 3].intersect?([3, 4, 5]) # => true
+ *    [1, 2, 3].intersect?([4, 5, 6]) # => false
  *
+ *  Each element must correctly implement method <tt>#hash</tt>.
+ *
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -5920,7 +6008,6 @@ rb_ary_intersect_p(VALUE ary1, VALUE ary2)
             break;
         }
     }
-    ary_recycle_hash(hash);
 
     return result;
 }
@@ -6016,47 +6103,55 @@ ary_max_opt_string(VALUE ary, long i, VALUE vmax)
 
 /*
  *  call-seq:
- *    array.max -> element
- *    array.max {|a, b| ... } -> element
- *    array.max(n) -> new_array
- *    array.max(n) {|a, b| ... } -> new_array
+ *    max -> element
+ *    max(count) -> new_array
+ *    max {|a, b| ... } -> element
+ *    max(count) {|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+.
+ *  - A new array of maximum-valued elements from +self+.
+ *
+ *  Does not modify +self+.
  *
- *  When no block is given, each element in +self+ must respond to method <tt><=></tt>
- *  with an \Integer.
+ *  With no block given, each element in +self+ must respond to method <tt>#<=></tt>
+ *  with a numeric.
  *
  *  With no argument and no block, returns the element in +self+
- *  having the maximum value per method <tt><=></tt>:
+ *  having the maximum value per method <tt>#<=></tt>:
  *
- *    [0, 1, 2].max # => 2
+ *    [1, 0, 3, 2].max # => 3
  *
- *  With an argument \Integer +n+ and no block, returns a new \Array with at most +n+ elements,
- *  in descending order per method <tt><=></tt>:
+ *  With non-negative numeric argument +count+ and no block,
+ *  returns a new array with at most +count+ 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, 0]
+ *    [1, 0, 3, 2].max(3)   # => [3, 2, 1]
+ *    [1, 0, 3, 2].max(3.0) # => [3, 2, 1]
+ *    [1, 0, 3, 2].max(9)   # => [3, 2, 1, 0]
+ *    [1, 0, 3, 2].max(0)   # => []
  *
- *  When a block is given, the block must return an \Integer.
+ *  With a block given, the block must return a numeric.
  *
- *  With a block and no argument, calls the block <tt>self.size-1</tt> times to compare elements;
+ *  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"
+ *    ['0', '', '000', '00'].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:
+ *  With non-negative numeric argument +count+ and a block,
+ *  returns a new array with at most +count+ elements,
+ *  in descending order, per the block:
  *
- *    ['0', '00', '000'].max(2) {|a, b| a.size <=> b.size } # => ["000", "00"]
+ *    ['0', '', '000', '00'].max(2) {|a, b| a.size <=> b.size }
+ *    # => ["000", "00"]
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 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;
@@ -6068,7 +6163,7 @@ rb_ary_max(int argc, VALUE *argv, VALUE 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) {
+           if (UNDEF_P(result) || rb_cmpint(rb_yield_values(2, v, result), v, result) > 0) {
                result = v;
            }
         }
@@ -6076,13 +6171,13 @@ rb_ary_max(int argc, VALUE *argv, VALUE ary)
     else if (n > 0) {
         result = RARRAY_AREF(ary, 0);
         if (n > 1) {
-            if (FIXNUM_P(result) && CMP_OPTIMIZABLE(cmp_opt, Integer)) {
+            if (FIXNUM_P(result) && CMP_OPTIMIZABLE(INTEGER)) {
                 return ary_max_opt_fixnum(ary, 1, result);
             }
-            else if (STRING_P(result) && CMP_OPTIMIZABLE(cmp_opt, String)) {
+            else if (STRING_P(result) && CMP_OPTIMIZABLE(STRING)) {
                 return ary_max_opt_string(ary, 1, result);
             }
-            else if (RB_FLOAT_TYPE_P(result) && CMP_OPTIMIZABLE(cmp_opt, Float)) {
+            else if (RB_FLOAT_TYPE_P(result) && CMP_OPTIMIZABLE(FLOAT)) {
                 return ary_max_opt_float(ary, 1, result);
             }
             else {
@@ -6090,7 +6185,7 @@ rb_ary_max(int argc, VALUE *argv, VALUE ary)
             }
         }
     }
-    if (result == Qundef) return Qnil;
+    if (UNDEF_P(result)) return Qnil;
     return result;
 }
 
@@ -6185,47 +6280,55 @@ ary_min_opt_string(VALUE ary, long i, VALUE vmin)
 
 /*
  *  call-seq:
- *    array.min -> element
- *    array.min { |a, b| ... } -> element
- *    array.min(n) -> new_array
- *    array.min(n) { |a, b| ... } -> new_array
+ *    min -> element
+ *    min(count) -> new_array
+ *    min {|a, b| ... } -> element
+ *    min(count) {|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+.
+ *  - A new array of minimum-valued elements from +self+.
+ *
+ *  Does not modify +self+.
  *
- *  When no block is given, each element in +self+ must respond to method <tt><=></tt>
- *  with an \Integer.
+ *  With no block given, each element in +self+ must respond to method <tt>#<=></tt>
+ *  with a numeric.
  *
  *  With no argument and no block, returns the element in +self+
- *  having the minimum value per method <tt><=></tt>:
+ *  having the minimum value per method <tt>#<=></tt>:
  *
- *    [0, 1, 2].min # => 0
+ *    [1, 0, 3, 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>:
+ *  With non-negative numeric argument +count+ and no block,
+ *  returns a new array with at most +count+ 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]
+ *    [1, 0, 3, 2].min(3)   # => [0, 1, 2]
+ *    [1, 0, 3, 2].min(3.0) # => [0, 1, 2]
+ *    [1, 0, 3, 2].min(9)   # => [0, 1, 2, 3]
+ *    [1, 0, 3, 2].min(0)   # => []
  *
- *  When a block is given, the block must return an Integer.
+ *  With a block given, the block must return a numeric.
  *
- *  With a block and no argument, calls the block <tt>self.size-1</tt> times to compare elements;
+ *  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"
+ *    ['0', '', '000', '00'].min {|a, b| a.size <=> b.size }
+ *    # => ""
  *
- *  With an argument +n+ and a block, returns a new \Array with at most +n+ elements,
- *  in ascending order per the block:
+ *  With non-negative numeric argument +count+ and a block,
+ *  returns a new array with at most +count+ elements,
+ *  in ascending order, per the block:
  *
- *    ['0', '00', '000'].min(2) {|a, b| a.size <=> b.size } # => ["0", "00"]
+ *    ['0', '', '000', '00'].min(2) {|a, b| a.size <=> b.size }
+ *    # => ["", "0"]
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 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;
@@ -6237,7 +6340,7 @@ rb_ary_min(int argc, VALUE *argv, VALUE 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) {
+           if (UNDEF_P(result) || rb_cmpint(rb_yield_values(2, v, result), v, result) < 0) {
                result = v;
            }
         }
@@ -6245,13 +6348,13 @@ rb_ary_min(int argc, VALUE *argv, VALUE ary)
     else if (n > 0) {
         result = RARRAY_AREF(ary, 0);
         if (n > 1) {
-            if (FIXNUM_P(result) && CMP_OPTIMIZABLE(cmp_opt, Integer)) {
+            if (FIXNUM_P(result) && CMP_OPTIMIZABLE(INTEGER)) {
                 return ary_min_opt_fixnum(ary, 1, result);
             }
-            else if (STRING_P(result) && CMP_OPTIMIZABLE(cmp_opt, String)) {
+            else if (STRING_P(result) && CMP_OPTIMIZABLE(STRING)) {
                 return ary_min_opt_string(ary, 1, result);
             }
-            else if (RB_FLOAT_TYPE_P(result) && CMP_OPTIMIZABLE(cmp_opt, Float)) {
+            else if (RB_FLOAT_TYPE_P(result) && CMP_OPTIMIZABLE(FLOAT)) {
                 return ary_min_opt_float(ary, 1, result);
             }
             else {
@@ -6259,32 +6362,31 @@ rb_ary_min(int argc, VALUE *argv, VALUE ary)
             }
         }
     }
-    if (result == Qundef) return Qnil;
+    if (UNDEF_P(result)) return Qnil;
     return result;
 }
 
 /*
  *  call-seq:
- *    array.minmax -> [min_val, max_val]
- *    array.minmax {|a, b| ... } -> [min_val, max_val]
+ *    minmax -> array
+ *    minmax {|a, b| ... } -> array
  *
- *  Returns a new 2-element \Array containing the minimum and maximum values
- *  from +self+, either per method <tt><=></tt> or per a given block:.
+ *  Returns a 2-element array containing the minimum-valued and maximum-valued
+ *  elements from +self+;
+ *  does not modify +self+.
  *
- *  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>:
+ *  With no block given, the minimum and maximum values are determined using method <tt>#<=></tt>:
  *
- *    [0, 1, 2].minmax # => [0, 2]
+ *    [1, 0, 3, 2].minmax # => [0, 3]
  *
- *  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:
+ *  With a block given, the block must return a numeric;
+ *  the block is called <tt>self.size - 1</tt> times to compare elements;
+ *  returns the elements having the minimum and maximum values per the block:
  *
- *    ['0', '00', '000'].minmax {|a, b| a.size <=> b.size } # => ["0", "000"]
+ *    ['0', '', '000', '00'].minmax {|a, b| a.size <=> b.size }
+ *    # => ["", "000"]
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 static VALUE
 rb_ary_minmax(VALUE ary)
@@ -6304,32 +6406,30 @@ push_value(st_data_t key, st_data_t val, st_data_t ary)
 
 /*
  *  call-seq:
- *    array.uniq! -> self or nil
- *    array.uniq! {|element| ... } -> self or nil
+ *    uniq! -> self or nil
+ *    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:
+ *  to compare elements:
  *
  *    a = [0, 0, 1, 1, 2, 2]
  *    a.uniq! # => [0, 1, 2]
- *
- *  Returns +nil+ if no elements removed.
+ *    a.uniq! # => nil
  *
  *  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:
+ *  identifies and omits "duplicate" elements using method <tt>eql?</tt>
+ *  to compare <i>block return values</i>;
+ *  that is, an element is a duplicate if its block return value
+ *  is the same as that of a previous element:
  *
  *    a = ['a', 'aa', 'aaa', 'b', 'bb', 'bbb']
- *    a.uniq! {|element| element.size } # => ['a', 'aa', 'aaa']
+ *    a.uniq! {|element| element.size } # => ["a", "aa", "aaa"]
+ *    a.uniq! {|element| element.size } # => nil
  *
- *  Returns +nil+ if no elements removed.
+ *  Related: see {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 static VALUE
 rb_ary_uniq_bang(VALUE ary)
@@ -6351,38 +6451,40 @@ rb_ary_uniq_bang(VALUE ary)
     }
     rb_ary_modify_check(ary);
     ARY_SET_LEN(ary, 0);
-    if (ARY_SHARED_P(ary) && !ARY_EMBED_P(ary)) {
+    if (ARY_SHARED_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);
 
     return ary;
 }
 
 /*
  *  call-seq:
- *    array.uniq -> new_array
- *    array.uniq {|element| ... } -> new_array
+ *    uniq -> new_array
+ *    uniq {|element| ... } -> new_array
  *
- *  Returns a new \Array containing those elements from +self+ that are not duplicates,
+ *  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:
+ *  With no block given, identifies and omits duplicate elements using method <tt>eql?</tt>
+ *  to compare elements:
  *
  *    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:
+ *  identifies and omits "duplicate" elements using method <tt>eql?</tt>
+ *  to compare <i>block return values</i>;
+ *  that is, an element is a duplicate if its block return value
+ *  is the same as that of a previous element:
  *
  *    a = ['a', 'aa', 'aaa', 'b', 'bb', 'bbb']
  *    a.uniq {|element| element.size } # => ["a", "aa", "aaa"]
  *
+ *  Related: {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -6402,20 +6504,24 @@ rb_ary_uniq(VALUE ary)
         hash = ary_make_hash(ary);
         uniq = rb_hash_values(hash);
     }
-    if (hash) {
-        ary_recycle_hash(hash);
-    }
 
     return uniq;
 }
 
 /*
  *  call-seq:
- *    array.compact! -> self or nil
+ *    compact! -> self or nil
  *
- *  Removes all +nil+ elements from +self+.
+ *  Removes all +nil+ elements from +self+;
+ *  Returns +self+ if any elements are removed, +nil+ otherwise:
  *
- *  Returns +self+ if any elements removed, otherwise +nil+.
+ *    a = [nil, 0, nil, false, nil, '', nil, [], nil, {}]
+ *    a.compact! # => [0, false, "", [], {}]
+ *    a          # => [0, false, "", [], {}]
+ *    a.compact! # => nil
+ *
+ *  Related: Array#compact;
+ *  see also {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 static VALUE
@@ -6425,14 +6531,14 @@ rb_ary_compact_bang(VALUE ary)
     long n;
 
     rb_ary_modify(ary);
-    p = t = (VALUE *)RARRAY_CONST_PTR_TRANSIENT(ary); /* WB: no new reference */
+    p = t = (VALUE *)RARRAY_CONST_PTR(ary); /* WB: no new reference */
     end = p + RARRAY_LEN(ary);
 
     while (t < end) {
         if (NIL_P(*t)) t++;
         else *p++ = *t++;
     }
-    n = p - RARRAY_CONST_PTR_TRANSIENT(ary);
+    n = p - RARRAY_CONST_PTR(ary);
     if (RARRAY_LEN(ary) == n) {
         return Qnil;
     }
@@ -6443,12 +6549,16 @@ rb_ary_compact_bang(VALUE ary)
 
 /*
  *  call-seq:
- *    array.compact -> new_array
+ *    compact -> new_array
+ *
+ *  Returns a new array containing only the non-+nil+ elements from +self+;
+ *  element order is preserved:
  *
- *  Returns a new \Array containing all non-+nil+ elements from +self+:
+ *    a = [nil, 0, nil, false, nil, '', nil, [], nil, {}]
+ *    a.compact # => [0, false, "", [], {}]
  *
- *    a = [nil, 0, nil, 1, nil, 2, nil]
- *    a.compact # => [0, 1, 2]
+ *  Related: Array#compact!;
+ *  see also {Methods for Deleting}[rdoc-ref:Array@Methods+for+Deleting].
  */
 
 static VALUE
@@ -6461,29 +6571,29 @@ rb_ary_compact(VALUE ary)
 
 /*
  *  call-seq:
- *    array.count -> an_integer
- *    array.count(obj) -> an_integer
- *    array.count {|element| ... } -> an_integer
+ *    count -> integer
+ *    count(object) -> integer
+ *    count {|element| ... } -> 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
+ *    [0, :one, 'two', 3, 3.0].count # => 5
  *
- *  With argument +obj+, returns the count of elements <tt>==</tt> to +obj+:
+ *  With argument +object+ given, returns the count of elements <tt>==</tt> to +object+:
  *
- *    [0, 1, 2, 0.0].count(0) # => 2
- *    [0, 1, 2].count(3) # => 0
+ *    [0, :one, 'two', 3, 3.0].count(3) # => 2
  *
  *  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
+ *    [0, 1, 2, 3].count {|element| element > 1 } # => 2
+ *
+ *  With argument +object+ and a block given, issues a warning, ignores the block,
+ *  and returns the count of elements <tt>==</tt> to +object+.
  *
- *  With argument +obj+ and a block given, issues a warning, ignores the block,
- *  and returns the count of elements <tt>==</tt> to +obj+.
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -6520,9 +6630,8 @@ static VALUE
 flatten(VALUE ary, int level)
 {
     long i;
-    VALUE stack, result, tmp = 0, elt, vmemo;
-    st_table *memo = 0;
-    st_data_t id;
+    VALUE stack, result, tmp = 0, elt;
+    VALUE memo = Qfalse;
 
     for (i = 0; i < RARRAY_LEN(ary); i++) {
         elt = RARRAY_AREF(ary, i);
@@ -6536,7 +6645,7 @@ flatten(VALUE ary, int level)
     }
 
     result = ary_new(0, RARRAY_LEN(ary));
-    ary_memcpy(result, 0, i, RARRAY_CONST_PTR_TRANSIENT(ary));
+    ary_memcpy(result, 0, i, RARRAY_CONST_PTR(ary));
     ARY_SET_LEN(result, i);
 
     stack = ary_new(0, ARY_DEFAULT_SIZE);
@@ -6544,12 +6653,9 @@ flatten(VALUE ary, int level)
     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);
+        memo = rb_obj_hide(rb_ident_hash_new());
+        rb_hash_aset(memo, ary, Qtrue);
+        rb_hash_aset(memo, tmp, Qtrue);
     }
 
     ary = tmp;
@@ -6564,9 +6670,8 @@ flatten(VALUE ary, int level)
             }
             tmp = rb_check_array_type(elt);
             if (RBASIC(result)->klass) {
-                if (memo) {
-                    RB_GC_GUARD(vmemo);
-                    st_clear(memo);
+                if (RTEST(memo)) {
+                    rb_hash_clear(memo);
                 }
                 rb_raise(rb_eRuntimeError, "flatten reentered");
             }
@@ -6575,12 +6680,11 @@ flatten(VALUE ary, int level)
             }
             else {
                 if (memo) {
-                    id = (st_data_t)tmp;
-                    if (st_is_member(memo, id)) {
-                        st_clear(memo);
+                    if (rb_hash_aref(memo, tmp) == Qtrue) {
+                        rb_hash_clear(memo);
                         rb_raise(rb_eArgError, "tried to flatten recursive array");
                     }
-                    st_insert(memo, id, (st_data_t)Qtrue);
+                    rb_hash_aset(memo, tmp, Qtrue);
                 }
                 rb_ary_push(stack, ary);
                 rb_ary_push(stack, LONG2NUM(i));
@@ -6592,8 +6696,7 @@ flatten(VALUE ary, int level)
             break;
         }
         if (memo) {
-            id = (st_data_t)ary;
-            st_delete(memo, &id, 0);
+            rb_hash_delete(memo, ary);
         }
         tmp = rb_ary_pop(stack);
         i = NUM2LONG(tmp);
@@ -6601,7 +6704,7 @@ flatten(VALUE ary, int level)
     }
 
     if (memo) {
-        st_clear(memo);
+        rb_hash_clear(memo);
     }
 
     RBASIC_SET_CLASS(result, rb_cArray);
@@ -6610,33 +6713,37 @@ flatten(VALUE ary, int level)
 
 /*
  *  call-seq:
- *    array.flatten! -> self or nil
- *    array.flatten!(level) -> self or nil
+ *    flatten!(depth = nil) -> self or nil
+ *
+ *  Returns +self+ as a recursively flattening of +self+ to +depth+ levels of recursion;
+ *  +depth+ must be an
+ *  {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects],
+ *  or +nil+.
+ *  At each level of recursion:
+ *
+ *  - Each element that is an array is "flattened"
+ *    (that is, replaced by its individual array elements).
+ *  - Each element that is not an array is unchanged
+ *    (even if the element is an object that has instance method +flatten+).
  *
- *  Replaces each nested \Array in +self+ with the elements from that \Array;
- *  returns +self+ if any changes, +nil+ otherwise.
+ *  Returns +nil+ if no elements were flattened.
  *
- *  With non-negative \Integer argument +level+, flattens recursively through +level+ levels:
+ *  With non-negative integer argument +depth+, flattens recursively through +depth+ 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
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5, {foo: 0}, Set.new([6, 7]) ]
+ *    a                   # => [0, [1, [2, 3], 4], 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.dup.flatten!(1)   # => [0, 1, [2, 3], 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.dup.flatten!(1.1) # => [0, 1, [2, 3], 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.dup.flatten!(2)   # => [0, 1, 2, 3, 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.dup.flatten!(3)   # => [0, 1, 2, 3, 4, 5, {:foo=>0}, #<Set: {6, 7}>]
  *
- *  With no argument, a +nil+ argument, or with negative argument +level+, flattens all levels:
+ *  With +nil+ or negative argument +depth+, 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
+ *    a.dup.flatten!     # => [0, 1, 2, 3, 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.dup.flatten!(-1) # => [0, 1, 2, 3, 4, 5, {:foo=>0}, #<Set: {6, 7}>]
  *
+ *  Related: Array#flatten;
+ *  see also {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
  */
 
 static VALUE
@@ -6654,7 +6761,7 @@ rb_ary_flatten_bang(int argc, VALUE *argv, VALUE ary)
     if (result == ary) {
         return Qnil;
     }
-    if (!(mod = ARY_EMBED_P(result))) rb_obj_freeze(result);
+    if (!(mod = ARY_EMBED_P(result))) rb_ary_freeze(result);
     rb_ary_replace(ary, result);
     if (mod) ARY_SET_EMBED_LEN(result, 0);
 
@@ -6663,35 +6770,37 @@ rb_ary_flatten_bang(int argc, VALUE *argv, VALUE 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]
+ *    flatten(depth = nil) -> new_array
+ *
+ *  Returns a new array that is a recursive flattening of +self+
+ *  to +depth+ levels of recursion;
+ *  +depth+ must be an
+ *  {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects]
+ *  or +nil+.
+ *  At each level of recursion:
+ *
+ *  - Each element that is an array is "flattened"
+ *    (that is, replaced by its individual array elements).
+ *  - Each element that is not an array is unchanged
+ *    (even if the element is an object that has instance method +flatten+).
+ *
+ *  With non-negative integer argument +depth+, flattens recursively through +depth+ levels:
  *
+ *    a = [ 0, [ 1, [2, 3], 4 ], 5, {foo: 0}, Set.new([6, 7]) ]
+ *    a              # => [0, [1, [2, 3], 4], 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.flatten(0)   # => [0, [1, [2, 3], 4], 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.flatten(1  ) # => [0, 1, [2, 3], 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.flatten(1.1) # => [0, 1, [2, 3], 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.flatten(2)   # => [0, 1, 2, 3, 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.flatten(3)   # => [0, 1, 2, 3, 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *
+ *  With +nil+ or negative +depth+, flattens all levels.
+ *
+ *    a.flatten     # => [0, 1, 2, 3, 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *    a.flatten(-1) # => [0, 1, 2, 3, 4, 5, {:foo=>0}, #<Set: {6, 7}>]
+ *
+ *  Related: Array#flatten!;
+ *  see also {Methods for Converting}[rdoc-ref:Array@Methods+for+Converting].
  */
 
 static VALUE
@@ -6723,10 +6832,10 @@ rb_ary_shuffle_bang(rb_execution_context_t *ec, VALUE ary, VALUE randgen)
     rb_ary_modify(ary);
     i = len = RARRAY_LEN(ary);
     RARRAY_PTR_USE(ary, ptr, {
-        while (i) {
+        while (i > 1) {
             long j = RAND_UPTO(i);
             VALUE tmp;
-            if (len != RARRAY_LEN(ary) || ptr != RARRAY_CONST_PTR_TRANSIENT(ary)) {
+            if (len != RARRAY_LEN(ary) || ptr != RARRAY_CONST_PTR(ary)) {
                 rb_raise(rb_eRuntimeError, "modified during shuffle");
             }
             tmp = ptr[--i];
@@ -6745,6 +6854,14 @@ rb_ary_shuffle(rb_execution_context_t *ec, VALUE ary, VALUE randgen)
     return ary;
 }
 
+static const rb_data_type_t ary_sample_memo_type = {
+    .wrap_struct_name = "ary_sample_memo",
+    .function = {
+        .dfree = (RUBY_DATA_FUNC)st_free_table,
+    },
+    .flags = RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY
+};
+
 static VALUE
 ary_sample(rb_execution_context_t *ec, VALUE ary, VALUE randgen, VALUE nv, VALUE to_array)
 {
@@ -6818,7 +6935,7 @@ ary_sample(rb_execution_context_t *ec, VALUE ary, VALUE randgen, VALUE nv, VALUE
             sorted[j] = idx[i] = k;
         }
         result = rb_ary_new_capa(n);
-        RARRAY_PTR_USE_TRANSIENT(result, ptr_result, {
+        RARRAY_PTR_USE(result, ptr_result, {
             for (i=0; i<n; i++) {
                 ptr_result[i] = RARRAY_AREF(ary, idx[i]);
             }
@@ -6826,11 +6943,9 @@ ary_sample(rb_execution_context_t *ec, VALUE ary, VALUE randgen, VALUE nv, VALUE
     }
     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);
+        VALUE vmemo = TypedData_Wrap_Struct(0, &ary_sample_memo_type, 0);
         st_table *memo = st_init_numtable_with_size(n);
-        DATA_PTR(vmemo) = memo;
+        RTYPEDDATA_DATA(vmemo) = memo;
         result = rb_ary_new_capa(n);
         RARRAY_PTR_USE(result, ptr_result, {
             for (i=0; i<n; i++) {
@@ -6841,7 +6956,7 @@ ary_sample(rb_execution_context_t *ec, VALUE ary, VALUE randgen, VALUE nv, VALUE
             len = RARRAY_LEN(ary);
             if (len <= max_idx) n = 0;
             else if (n > len) n = len;
-            RARRAY_PTR_USE_TRANSIENT(ary, ptr_ary, {
+            RARRAY_PTR_USE(ary, ptr_ary, {
                 for (i=0; i<n; i++) {
                     long j2 = j = ptr_result[i];
                     long i2 = i;
@@ -6853,8 +6968,9 @@ ary_sample(rb_execution_context_t *ec, VALUE ary, VALUE randgen, VALUE nv, VALUE
                 }
             });
         });
-        DATA_PTR(vmemo) = 0;
+        RTYPEDDATA_DATA(vmemo) = 0;
         st_free_table(memo);
+        RB_GC_GUARD(vmemo);
     }
     else {
         result = rb_ary_dup(ary);
@@ -6876,6 +6992,12 @@ ary_sample(rb_execution_context_t *ec, VALUE ary, VALUE randgen, VALUE nv, VALUE
 }
 
 static VALUE
+ary_sized_alloc(rb_execution_context_t *ec, VALUE self)
+{
+    return rb_ary_new2(RARRAY_LEN(self));
+}
+
+static VALUE
 ary_sample0(rb_execution_context_t *ec, VALUE ary)
 {
     return ary_sample(ec, ary, rb_cRandom, Qfalse, Qfalse);
@@ -6899,36 +7021,36 @@ rb_ary_cycle_size(VALUE self, VALUE args, VALUE eobj)
 
 /*
  *  call-seq:
- *    array.cycle {|element| ... } -> nil
- *    array.cycle(count) {|element| ... } -> nil
- *    array.cycle -> new_enumerator
- *    array.cycle(count) -> new_enumerator
+ *    cycle(count = nil) {|element| ... } -> nil
+ *    cycle(count = nil) -> new_enumerator
+ *
+ *  With a block given, may call the block, depending on the value of argument +count+;
+ *  +count+ must be an
+ *  {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects],
+ *  or +nil+.
  *
- *  When called with positive \Integer argument +count+ and a block,
- *  calls the block with each element, then does so again,
+ *  When +count+ is positive,
+ *  calls the block with each element, then does so repeatedly,
  *  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:
+ *  When +count+ is zero or negative, does not call the block:
  *
- *    [0, 1].cycle(0) {|element| fail 'Cannot happen' } # => nil
+ *    [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:
+ *  When +count+ is +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]
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: see {Methods for Iterating}[rdoc-ref:Array@Methods+for+Iterating].
  */
 static VALUE
 rb_ary_cycle(int argc, VALUE *argv, VALUE ary)
@@ -7072,82 +7194,44 @@ rb_ary_permutation_size(VALUE ary, VALUE args, VALUE eobj)
 
 /*
  *  call-seq:
- *    array.permutation {|element| ... } -> self
- *    array.permutation(n) {|element| ... } -> self
- *    array.permutation -> new_enumerator
- *    array.permutation(n) -> new_enumerator
+ *    permutation(count = self.size) {|permutation| ... } -> self
+ *    permutation(count = self.size) -> new_enumerator
  *
- *  When invoked with a block, yield all permutations of elements of +self+; returns +self+.
- *  The order of permutations is indeterminate.
+ *  Iterates over permutations of the elements of +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:
+ *  With a block and an in-range positive integer argument +count+ (<tt>0 < count <= self.size</tt>) given,
+ *  calls the block with each permutation of +self+ of size +count+;
+ *  returns +self+:
  *
  *    a = [0, 1, 2]
- *    a.permutation(3) {|permutation| p permutation }
- *
- *  Output:
+ *    perms = []
+ *    a.permutation(1) {|perm| perms.push(perm) }
+ *    perms # => [[0], [1], [2]]
  *
- *    [0, 1, 2]
- *    [0, 2, 1]
- *    [1, 0, 2]
- *    [1, 2, 0]
- *    [2, 0, 1]
- *    [2, 1, 0]
+ *    perms = []
+ *    a.permutation(2) {|perm| perms.push(perm) }
+ *    perms # => [[0, 1], [0, 2], [1, 0], [1, 2], [2, 0], [2, 1]]
  *
- *  When +n+ is zero, calls the block once with a new empty \Array:
+ *    perms = []
+ *    a.permutation(3) {|perm| perms.push(perm) }
+ *    perms # => [[0, 1, 2], [0, 2, 1], [1, 0, 2], [1, 2, 0], [2, 0, 1], [2, 1, 0]]
  *
- *    a = [0, 1, 2]
- *    a.permutation(0) {|permutation| p permutation }
+ *  When +count+ is zero, calls the block once with a new empty array:
  *
- *  Output:
+ *    perms = []
+ *    a.permutation(0) {|perm| perms.push(perm) }
+ *    perms # => [[]]
  *
- *    []
- *
- *  When +n+ is out of range (negative or larger than <tt>self.size</tt>),
+ *  When +count+ 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)>
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: {Methods for Iterating}[rdoc-ref:Array@Methods+for+Iterating].
  */
 
 static VALUE
@@ -7220,56 +7304,46 @@ rb_ary_combination_size(VALUE ary, VALUE args, VALUE eobj)
 
 /*
  *  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.
+ *    combination(count) {|element| ... } -> self
+ *    combination(count) -> new_enumerator
  *
- *  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:
+ *  When a block and a positive
+ *  {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects]
+ *  argument +count+ (<tt>0 < count <= self.size</tt>)
+ *  are given, calls the block with each combination of +self+ of size +count+;
+ *  returns +self+:
  *
- *    a = [0, 1, 2]
- *    a.combination(2) {|combination| p combination }
+ *    a = %w[a b c]                                   # => ["a", "b", "c"]
+ *    a.combination(2) {|combination| p combination } # => ["a", "b", "c"]
  *
  *  Output:
  *
- *    [0, 1]
- *    [0, 2]
- *    [1, 2]
- *
- *  Another example:
- *
- *    a = [0, 1, 2]
- *    a.combination(3) {|combination| p combination }
- *
- *  Output:
+ *    ["a", "b"]
+ *    ["a", "c"]
+ *    ["b", "c"]
  *
- *    [0, 1, 2]
+ *  The order of the yielded combinations is not guaranteed.
  *
- *  When +n+ is zero, calls the block once with a new empty \Array:
+ *  When +count+ is zero, calls the block once with a new empty array:
  *
- *    a = [0, 1, 2]
- *    a1 = a.combination(0) {|combination| p combination }
+ *    a.combination(0) {|combination| p combination }
+ *    [].combination(0) {|combination| p combination }
  *
  *  Output:
  *
  *    []
+ *    []
  *
- *  When +n+ is out of range (negative or larger than <tt>self.size</tt>),
+ *  When +count+ is negative or larger than +self.size+ and +self+ is non-empty,
  *  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.combination(-1) {|combination| fail 'Cannot happen' } # => ["a", "b", "c"]
+ *    a.combination(4)  {|combination| fail 'Cannot happen' } # => ["a", "b", "c"]
  *
- *    a = [0, 1, 2]
- *    a.combination(2) # => #<Enumerator: [0, 1, 2]:combination(2)>
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: Array#permutation;
+ *  see also {Methods for Iterating}[rdoc-ref:Array@Methods+for+Iterating].
  */
 
 static VALUE
@@ -7356,68 +7430,41 @@ rb_ary_repeated_permutation_size(VALUE ary, VALUE args, VALUE eobj)
 
 /*
  *  call-seq:
- *    array.repeated_permutation(n) {|permutation| ... } -> self
- *    array.repeated_permutation(n) -> new_enumerator
+ *    repeated_permutation(size) {|permutation| ... } -> self
+ *    repeated_permutation(size) -> new_enumerator
  *
- *  Calls the block with each repeated permutation of length +n+ of the elements of +self+;
- *  each permutation is an \Array;
+ *  With a block given, calls the block with each repeated permutation of length +size+
+ *  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:
+ *  If a positive integer argument +size+ is given,
+ *  calls the block with each +size+-tuple repeated permutation of the elements of +self+.
+ *  The number of permutations is <tt>self.size**size</tt>.
  *
- *    a.repeated_permutation(2) {|permutation| p permutation }
- *
- *  Output:
+ *  Examples:
  *
- *    [0, 0]
- *    [0, 1]
- *    [0, 2]
- *    [1, 0]
- *    [1, 1]
- *    [1, 2]
- *    [2, 0]
- *    [2, 1]
- *    [2, 2]
+ *  - +size+ is 1:
  *
- *  If +n+ is zero, calls the block once with an empty \Array.
+ *      p = []
+ *      [0, 1, 2].repeated_permutation(1) {|permutation| p.push(permutation) }
+ *      p # => [[0], [1], [2]]
  *
- *  If +n+ is negative, does not call the block:
+ *  - +size+ is 2:
  *
- *    a.repeated_permutation(-1) {|permutation| fail 'Cannot happen' }
+ *      p = []
+ *      [0, 1, 2].repeated_permutation(2) {|permutation| p.push(permutation) }
+ *      p # => [[0, 0], [0, 1], [0, 2], [1, 0], [1, 1], [1, 2], [2, 0], [2, 1], [2, 2]]
  *
- *  Returns a new \Enumerator if no block given:
+ *  If +size+ is zero, calls the block once with an empty array.
  *
- *    a = [0, 1, 2]
- *    a.repeated_permutation(2) # => #<Enumerator: [0, 1, 2]:permutation(2)>
+ *  If +size+ is negative, does not call the block:
  *
- *  Using Enumerators, it's convenient to show the permutations and counts
- *  for some values of +n+:
+ *    [0, 1, 2].repeated_permutation(-1) {|permutation| fail 'Cannot happen' }
  *
- *    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]]
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 static VALUE
 rb_ary_repeated_permutation(VALUE ary, VALUE num)
@@ -7488,65 +7535,41 @@ rb_ary_repeated_combination_size(VALUE ary, VALUE args, VALUE eobj)
 
 /*
  *  call-seq:
- *    array.repeated_combination(n) {|combination| ... } -> self
- *    array.repeated_combination(n) -> new_enumerator
+ *    repeated_combination(size) {|combination| ... } -> self
+ *    repeated_combination(size) -> new_enumerator
  *
- *  Calls the block with each repeated combination of length +n+ of the elements of +self+;
- *  each combination is an \Array;
+ *  With a block given, calls the block with each repeated combination of length +size+
+ *  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]
+ *  If a positive integer argument +size+ is given,
+ *  calls the block with each +size+-tuple repeated combination of the elements of +self+.
+ *  The number of combinations is <tt>(size+1)(size+2)/2</tt>.
  *
- *  +n+ = 2:
- *
- *    a.repeated_combination(2) {|combination| p combination }
- *
- *  Output:
+ *  Examples:
  *
- *    [0, 0]
- *    [0, 1]
- *    [0, 2]
- *    [1, 1]
- *    [1, 2]
- *    [2, 2]
+ *  - +size+ is 1:
  *
- *  If +n+ is zero, calls the block once with an empty \Array.
+ *      c = []
+ *      [0, 1, 2].repeated_combination(1) {|combination| c.push(combination) }
+ *      c # => [[0], [1], [2]]
  *
- *  If +n+ is negative, does not call the block:
+ *  - +size+ is 2:
  *
- *    a.repeated_combination(-1) {|combination| fail 'Cannot happen' }
+ *      c = []
+ *      [0, 1, 2].repeated_combination(2) {|combination| c.push(combination) }
+ *      c # => [[0, 0], [0, 1], [0, 2], [1, 1], [1, 2], [2, 2]]
  *
- *  Returns a new \Enumerator if no block given:
+ *  If +size+ is zero, calls the block once with an empty array.
  *
- *    a = [0, 1, 2]
- *    a.repeated_combination(2) # => #<Enumerator: [0, 1, 2]:combination(2)>
+ *  If +size+ is negative, does not call the block:
  *
- *  Using Enumerators, it's convenient to show the combinations and counts
- *  for some values of +n+:
+ *    [0, 1, 2].repeated_combination(-1) {|combination| fail 'Cannot happen' }
  *
- *    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]]
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 static VALUE
@@ -7586,62 +7609,55 @@ rb_ary_repeated_combination(VALUE ary, VALUE num)
 
 /*
  *  call-seq:
- *    array.product(*other_arrays) -> new_array
- *    array.product(*other_arrays) {|combination| ... } -> self
+ *    product(*other_arrays) -> new_array
+ *    product(*other_arrays) {|combination| ... } -> self
  *
- *  Computes and returns or yields all combinations of elements from all the Arrays,
+ *  Computes 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:
+ *  With no block 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]]
+ *    p = [0, 1].product([2, 3])
+ *    # => [[0, 2], [0, 3], [1, 2], [1, 3]]
+ *    p.size # => 4
+ *    p = [0, 1].product([2, 3], [4, 5])
+ *    # => [[0, 2, 4], [0, 2, 5], [0, 3, 4], [0, 3, 5], [1, 2, 4], [1, 2, 5], [1, 3, 4], [1, 3,...
+ *    p.size # => 8
  *
- *  When a block is given, yields each combination as an \Array; returns +self+:
+ *  If +self+ or any argument is empty, returns an empty array:
  *
- *    a.product(a1) {|combination| p combination }
+ *    [].product([2, 3], [4, 5]) # => []
+ *    [0, 1].product([2, 3], []) # => []
  *
- *  Output:
+ *  If no argument is given, returns an array of 1-element arrays,
+ *  each containing an element of +self+:
  *
- *    [0, 3]
- *    [0, 4]
- *    [1, 3]
- *    [1, 4]
- *    [2, 3]
- *    [2, 4]
+ *    a.product # => [[0], [1], [2]]
  *
- *  If any argument is an empty \Array, does not call the block:
+ *  With a block given, calls the block with each combination; returns +self+:
  *
- *    a.product(a1, a2, []) {|combination| fail 'Cannot happen' }
+ *    p = []
+ *    [0, 1].product([2, 3]) {|combination| p.push(combination) }
+ *    p # => [[0, 2], [0, 3], [1, 2], [1, 3]]
  *
- *  If no argument is given, yields each element of +self+ as a 1-element \Array:
+ *  If +self+ or any argument is empty, does not call the block:
  *
- *    a.product {|combination| p combination }
+ *    [].product([2, 3], [4, 5]) {|combination| fail 'Cannot happen' }
+ *    # => []
+ *    [0, 1].product([2, 3], []) {|combination| fail 'Cannot happen' }
+ *    # => [0, 1]
  *
- *  Output:
+ *  If no argument is given, calls the block with each element of +self+ as a 1-element array:
  *
- *    [0]
- *    [1]
- *    [2]
+ *    p = []
+ *    [0, 1].product {|combination| p.push(combination) }
+ *    p # => [[0], [1]]
  *
+ *  Related: see {Methods for Combining}[rdoc-ref:Array@Methods+for+Combining].
  */
 
 static VALUE
@@ -7734,20 +7750,20 @@ done:
 
 /*
  *  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+.
+ *    take(count) -> new_array
  *
- *  Examples:
+ *  Returns a new array containing the first +count+ element of +self+
+ *  (as available);
+ *  +count+ must be a non-negative numeric;
+ *  does not modify +self+:
  *
- *    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]
+ *    a = ['a', 'b', 'c', 'd']
+ *    a.take(2)   # => ["a", "b"]
+ *    a.take(2.1) # => ["a", "b"]
+ *    a.take(50)  # => ["a", "b", "c", "d"]
+ *    a.take(0)   # => []
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -7762,25 +7778,23 @@ rb_ary_take(VALUE obj, VALUE n)
 
 /*
  *  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+.
+ *    take_while {|element| ... } -> new_array
+ *    take_while -> new_enumerator
  *
  *  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:
+ *  stops iterating 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]
+ *    a.take_while {|element| true }        # => [0, 1, 2, 3, 4, 5]
+ *    a.take_while {|element| false }       # => []
  *
- *  With no block given, returns a new \Enumerator:
+ *  With no block given, returns a new Enumerator.
  *
- *    [0, 1].take_while # => #<Enumerator: [0, 1]:take_while>
+ *  Does not modify +self+.
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -7797,10 +7811,10 @@ rb_ary_take_while(VALUE ary)
 
 /*
  *  call-seq:
- *    array.drop(n) -> new_array
+ *    drop(count) -> new_array
  *
- *  Returns a new \Array containing all but the first +n+ element of +self+,
- *  where +n+ is a non-negative \Integer;
+ *  Returns a new array containing all but the first +count+ element of +self+,
+ *  where +count+ is a non-negative integer;
  *  does not modify +self+.
  *
  *  Examples:
@@ -7809,7 +7823,9 @@ rb_ary_take_while(VALUE ary)
  *    a.drop(0) # => [0, 1, 2, 3, 4, 5]
  *    a.drop(1) # => [1, 2, 3, 4, 5]
  *    a.drop(2) # => [2, 3, 4, 5]
+ *    a.drop(9) # => []
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -7828,23 +7844,20 @@ rb_ary_drop(VALUE ary, VALUE n)
 
 /*
  *  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+.
+ *    drop_while {|element| ... } -> new_array
+ *    drop_while -> new_enumerator
  *
  *  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:
+ *  returns a new array _omitting_ those elements for which the block returned a truthy value;
+ *  does not modify +self+:
  *
  *    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>
+ *  With no block given, returns a new Enumerator.
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -7861,35 +7874,41 @@ rb_ary_drop_while(VALUE ary)
 
 /*
  *  call-seq:
- *    array.any? -> true or false
- *    array.any? {|element| ... } -> true or false
- *    array.any?(obj) -> true or false
+ *    any? -> true or false
+ *    any?(object) -> true or false
+ *    any? {|element| ... } -> true or false
  *
- *  Returns +true+ if any element of +self+ meets a given criterion.
+ *  Returns whether for any element of +self+, a given criterion is satisfied.
  *
- *  With no block given and no argument, returns +true+ if +self+ has any truthy element,
- *  +false+ otherwise:
+ *  With no block and no argument, returns whether any element of +self+ is truthy:
  *
- *    [nil, 0, false].any? # => true
- *    [nil, false].any? # => false
- *    [].any? # => false
+ *    [nil, false, []].any? # => true  # Array object is truthy.
+ *    [nil, false, {}].any? # => true  # Hash object is truthy.
+ *    [nil, false, ''].any? # => true  # String object is truthy.
+ *    [nil, false].any?     # => false # Nil and false are not truthy.
  *
- *  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:
+ *  With argument +object+ given,
+ *  returns whether <tt>object === ele</tt> for any element +ele+ in +self+:
  *
- *    [0, 1, 2].any? {|element| element > 1 } # => true
- *    [0, 1, 2].any? {|element| element > 2 } # => false
+ *    [nil, false, 0].any?(0)          # => true
+ *    [nil, false, 1].any?(0)          # => false
+ *    [nil, false, 'food'].any?(/foo/) # => true
+ *    [nil, false, 'food'].any?(/bar/) # => false
  *
- *  If argument +obj+ is given, returns +true+ if +obj+.<tt>===</tt> any element,
- *  +false+ otherwise:
+ *  With a block given,
+ *  calls the block with each element in +self+;
+ *  returns whether the block returns any truthy value:
+ *
+ *    [0, 1, 2].any? {|ele| ele < 1 } # => true
+ *    [0, 1, 2].any? {|ele| ele < 0 } # => false
+ *
+ *  With both a block and argument +object+ given,
+ *  ignores the block and uses +object+ as above.
  *
- *    ['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
+ *  <b>Special case</b>: returns +false+ if +self+ is empty
+ *  (regardless of any given argument or block).
  *
- *  Related: Enumerable#any?
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -7922,34 +7941,41 @@ rb_ary_any_p(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.all? -> true or false
- *    array.all? {|element| ... } -> true or false
- *    array.all?(obj) -> true or false
+ *    all? -> true or false
+ *    all?(object) -> true or false
+ *    all? {|element| ... } -> true or false
  *
- *  Returns +true+ if all elements of +self+ meet a given criterion.
+ *  Returns whether for every element of +self+,
+ *  a given criterion is satisfied.
  *
- *  With no block given and no argument, returns +true+ if +self+ contains only truthy elements,
- *  +false+ otherwise:
+ *  With no block and no argument,
+ *  returns whether every element of +self+ is truthy:
  *
- *    [0, 1, :foo].all? # => true
- *    [0, nil, 2].all? # => false
- *    [].all? # => true
+ *    [[], {}, '', 0, 0.0, Object.new].all? # => true  # All truthy objects.
+ *    [[], {}, '', 0, 0.0, nil].all?        # => false # nil is not truthy.
+ *    [[], {}, '', 0, 0.0, false].all?      # => false # false is not truthy.
  *
- *  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:
+ *  With argument +object+ given, returns whether <tt>object === ele</tt>
+ *  for every element +ele+ in +self+:
  *
- *    [0, 1, 2].all? { |element| element < 3 } # => true
- *    [0, 1, 2].all? { |element| element < 2 } # => false
+ *    [0, 0, 0].all?(0)                    # => true
+ *    [0, 1, 2].all?(1)                    # => false
+ *    ['food', 'fool', 'foot'].all?(/foo/) # => true
+ *    ['food', 'drink'].all?(/foo/)        # => false
  *
- *  If argument +obj+ is given, returns +true+ if <tt>obj.===</tt> every element, +false+ otherwise:
+ *  With a block given, calls the block with each element in +self+;
+ *  returns whether the block returns only truthy values:
  *
- *    ['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
+ *    [0, 1, 2].all? { |ele| ele < 3 } # => true
+ *    [0, 1, 2].all? { |ele| ele < 2 } # => false
  *
- *  Related: Enumerable#all?
+ *  With both a block and argument +object+ given,
+ *  ignores the block and uses +object+ as above.
+ *
+ *  <b>Special case</b>: returns +true+ if +self+ is empty
+ *  (regardless of any given argument or block).
+ *
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -7982,34 +8008,35 @@ rb_ary_all_p(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.none? -> true or false
- *    array.none? {|element| ... } -> true or false
- *    array.none?(obj) -> true or false
+ *    none? -> true or false
+ *    none?(object) -> true or false
+ *    none? {|element| ... } -> true or false
  *
- *  Returns +true+ if no element of +self+ meet a given criterion.
+ *  Returns +true+ if no element of +self+ meets a given criterion, +false+ otherwise.
  *
  *  With no block given and no argument, returns +true+ if +self+ has no truthy elements,
  *  +false+ otherwise:
  *
- *    [nil, false].none? # => true
+ *    [nil, false].none?    # => true
  *    [nil, 0, false].none? # => false
- *    [].none? # => true
+ *    [].none?              # => true
+ *
+ *  With argument +object+ given, returns +false+ if for any element +element+,
+ *  <tt>object === element</tt>; +true+ 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
  *
- *  With a block given and no argument, calls the block with each element in +self+;
+ *  With a block given, 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?
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -8042,9 +8069,9 @@ rb_ary_none_p(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.one? -> true or false
- *    array.one? {|element| ... } -> true or false
- *    array.one?(obj) -> true or false
+ *    one? -> true or false
+ *    one? {|element| ... } -> true or false
+ *    one?(object) -> true or false
  *
  *  Returns +true+ if exactly one element of +self+ meets a given criterion.
  *
@@ -8056,14 +8083,14 @@ rb_ary_none_p(int argc, VALUE *argv, VALUE ary)
  *    [nil, nil].one? # => false
  *    [].one? # => false
  *
- *  With a block given and no argument, calls the block with each element in +self+;
+ *  With a block given, 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,
+ *  With argument +object+ given, returns +true+ if for exactly one element +element+, <tt>object === element</tt>;
  *  +false+ otherwise:
  *
  *    [0, 1, 2].one?(0) # => true
@@ -8073,7 +8100,7 @@ rb_ary_none_p(int argc, VALUE *argv, VALUE ary)
  *    ['food', 'drink'].one?(/foo/) # => true
  *    [].one?(/foo/) # => false
  *
- *  Related: Enumerable#one?
+ *  Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
  */
 
 static VALUE
@@ -8116,11 +8143,11 @@ rb_ary_one_p(int argc, VALUE *argv, VALUE ary)
 
 /*
  *  call-seq:
- *    array.dig(index, *identifiers) -> object
+ *    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.
+ *  Finds and returns the object in nested object
+ *  specified by +index+ and +identifiers+;
+ *  the nested objects may be instances of various classes.
  *  See {Dig Methods}[rdoc-ref:dig_methods.rdoc].
  *
  *  Examples:
@@ -8131,6 +8158,7 @@ rb_ary_one_p(int argc, VALUE *argv, VALUE ary)
  *    a.dig(1, 2, 0) # => :bat
  *    a.dig(1, 2, 3) # => nil
  *
+ *  Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
  */
 
 static VALUE
@@ -8148,7 +8176,7 @@ finish_exact_sum(long n, VALUE r, VALUE v, int z)
 {
     if (n != 0)
         v = rb_fix_plus(LONG2FIX(n), v);
-    if (r != Qundef) {
+    if (!UNDEF_P(r)) {
         v = rb_rational_plus(r, v);
     }
     else if (!n && z) {
@@ -8159,40 +8187,41 @@ finish_exact_sum(long n, VALUE r, VALUE v, int z)
 
 /*
  * call-seq:
- *   array.sum(init = 0) -> object
- *   array.sum(init = 0) {|element| ... } -> object
+ *   sum(init = 0) -> object
+ *   sum(init = 0) {|element| ... } -> object
  *
- *  When no block is given, returns the object equivalent to:
+ *  With no block given, returns the sum of +init+ and all elements of +self+;
+ *  for array +array+ and value +init+, 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>.
+ *  For example, <tt>[e0, e1, e2].sum</tt> returns <tt>init + e0 + e1 + e2</tt>.
  *
  *  Examples:
  *
- *    a = [0, 1, 2, 3]
- *    a.sum # => 6
- *    a.sum(100) # => 106
+ *    [0, 1, 2, 3].sum                 # => 6
+ *    [0, 1, 2, 3].sum(100)            # => 106
+ *    ['abc', 'def', 'ghi'].sum('jkl') # => "jklabcdefghi"
+ *    [[:foo, :bar], ['foo', 'bar']].sum([2, 3])
+ *    # => [2, 3, :foo, :bar, "foo", "bar"]
  *
- *  The elements need not be numeric, but must be <tt>+</tt>-compatible
- *  with each other and with +init+:
+ *  The +init+ value and elements need not be numeric, but must all be <tt>+</tt>-compatible:
  *
- *    a = ['abc', 'def', 'ghi']
- *    a.sum('jkl') # => "jklabcdefghi"
+ *    # Raises TypeError: Array can't be coerced into Integer.
+ *    [[:foo, :bar], ['foo', 'bar']].sum(2)
  *
- *  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:
+ *  With a block given, calls the block with each element of +self+;
+ *  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"
+ *    ['zero', 1, :two].sum('Coerced and concatenated: ') {|element| element.to_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.
+ *    for an array of strings or an array of arrays.
  *  - Array#sum method may not respect method redefinition of "+" methods such as Integer#+.
  *
  */
@@ -8213,6 +8242,12 @@ rb_ary_sum(int argc, VALUE *argv, VALUE ary)
 
     n = 0;
     r = Qundef;
+
+    if (!FIXNUM_P(v) && !RB_BIGNUM_TYPE_P(v) && !RB_TYPE_P(v, T_RATIONAL)) {
+        i = 0;
+        goto init_is_a_value;
+    }
+
     for (i = 0; i < RARRAY_LEN(ary); i++) {
         e = RARRAY_AREF(ary, i);
         if (block_given)
@@ -8227,7 +8262,7 @@ rb_ary_sum(int argc, VALUE *argv, VALUE ary)
         else if (RB_BIGNUM_TYPE_P(e))
             v = rb_big_plus(e, v);
         else if (RB_TYPE_P(e, T_RATIONAL)) {
-            if (r == Qundef)
+            if (UNDEF_P(r))
                 r = e;
             else
                 r = rb_rational_plus(r, e);
@@ -8297,6 +8332,7 @@ rb_ary_sum(int argc, VALUE *argv, VALUE ary)
     }
 
     goto has_some_value;
+    init_is_a_value:
     for (; i < RARRAY_LEN(ary); i++) {
         e = RARRAY_AREF(ary, i);
         if (block_given)
@@ -8307,6 +8343,7 @@ rb_ary_sum(int argc, VALUE *argv, VALUE ary)
     return v;
 }
 
+/* :nodoc: */
 static VALUE
 rb_ary_deconstruct(VALUE ary)
 {
@@ -8314,15 +8351,37 @@ rb_ary_deconstruct(VALUE ary)
 }
 
 /*
- *  An \Array is an ordered, integer-indexed collection of objects, called _elements_.
- *  Any object (even another array) may be an array element,
- *  and an array can contain objects of different types.
+ *  An \Array object is an ordered, integer-indexed collection of objects,
+ *  called _elements_;
+ *  the object represents
+ *  an {array data structure}[https://en.wikipedia.org/wiki/Array_(data_structure)].
+ *
+ *  An element may be any object (even another array);
+ *  elements may be any mixture of objects of different types.
+ *
+ *  Important data structures that use arrays include:
+ *
+ *  - {Coordinate vector}[https://en.wikipedia.org/wiki/Coordinate_vector].
+ *  - {Matrix}[https://en.wikipedia.org/wiki/Matrix_(mathematics)].
+ *  - {Heap}[https://en.wikipedia.org/wiki/Heap_(data_structure)].
+ *  - {Hash table}[https://en.wikipedia.org/wiki/Hash_table].
+ *  - {Deque (double-ended queue)}[https://en.wikipedia.org/wiki/Double-ended_queue].
+ *  - {Queue}[https://en.wikipedia.org/wiki/Queue_(abstract_data_type)].
+ *  - {Stack}[https://en.wikipedia.org/wiki/Stack_(abstract_data_type)].
+ *
+ *  There are also array-like data structures:
+ *
+ *  - {Associative array}[https://en.wikipedia.org/wiki/Associative_array] (see Hash).
+ *  - {Directory}[https://en.wikipedia.org/wiki/Directory_(computing)] (see Dir).
+ *  - {Environment}[https://en.wikipedia.org/wiki/Environment_variable] (see ENV).
+ *  - {Set}[https://en.wikipedia.org/wiki/Set_(abstract_data_type)] (see Set).
+ *  - {String}[https://en.wikipedia.org/wiki/String_(computer_science)] (see String).
  *
  *  == \Array Indexes
  *
  *  \Array indexing starts at 0, as in C or Java.
  *
- *  A positive index is an offset from the first element:
+ *  A non-negative index is an offset from the first element:
  *
  *  - Index 0 indicates the first element.
  *  - Index 1 indicates the second element.
@@ -8334,6 +8393,9 @@ rb_ary_deconstruct(VALUE ary)
  *  - Index -2 indicates the next-to-last element.
  *  - ...
  *
+ *
+ *  === In-Range and Out-of-Range Indexes
+ *
  *  A non-negative index is <i>in range</i> if and only if it is smaller than
  *  the size of the array.  For a 3-element array:
  *
@@ -8346,31 +8408,32 @@ rb_ary_deconstruct(VALUE ary)
  *  - Indexes -1 through -3 are in range.
  *  - Index -4 is out of range.
  *
+ *  === Effective Index
+ *
  *  Although the effective index into an array is always an integer,
- *  some methods (both within and outside of class \Array)
+ *  some methods (both within class \Array and elsewhere)
  *  accept one or more non-integer arguments that are
  *  {integer-convertible objects}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects].
  *
- *
  *  == Creating Arrays
  *
  *  You can create an \Array object explicitly with:
  *
- *  - An {array literal}[rdoc-ref:literals.rdoc@Array+Literals]:
+ *  - An {array literal}[rdoc-ref:syntax/literals.rdoc@Array+Literals]:
  *
  *      [1, 'one', :one, [2, 'two', :two]]
  *
- *  - A {%w or %W: string-array Literal}[rdoc-ref:literals.rdoc@25w+and+-25W-3A+String-Array+Literals]:
+ *  - A {%w or %W string-array Literal}[rdoc-ref:syntax/literals.rdoc@25w+and+-25W-3A+String-Array+Literals]:
  *
  *      %w[foo bar baz] # => ["foo", "bar", "baz"]
  *      %w[1 % *]       # => ["1", "%", "*"]
  *
- *  - A {%i pr %I: symbol-array Literal}[rdoc-ref:literals.rdoc@25i+and+-25I-3A+Symbol-Array+Literals]:
+ *  - A {%i or %I symbol-array Literal}[rdoc-ref:syntax/literals.rdoc@25i+and+-25I-3A+Symbol-Array+Literals]:
  *
  *      %i[foo bar baz] # => [:foo, :bar, :baz]
  *      %i[1 % *]       # => [:"1", :%, :*]
  *
- *  - \Method Kernel#Array:
+ *  - Method Kernel#Array:
  *
  *      Array(["a", "b"])             # => ["a", "b"]
  *      Array(1..5)                   # => [1, 2, 3, 4, 5]
@@ -8379,7 +8442,7 @@ rb_ary_deconstruct(VALUE ary)
  *      Array(1)                      # => [1]
  *      Array({:a => "a", :b => "b"}) # => [[:a, "a"], [:b, "b"]]
  *
- *  - \Method Array.new:
+ *  - Method Array.new:
  *
  *      Array.new               # => []
  *      Array.new(3)            # => [nil, nil, nil]
@@ -8434,8 +8497,8 @@ rb_ary_deconstruct(VALUE ary)
  *
  *  == 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
+ *  In addition to the methods it mixes in through the Enumerable module,
+ *  class \Array has proprietary methods for accessing, searching and otherwise
  *  manipulating arrays.
  *
  *  Some of the more common ones are illustrated below.
@@ -8485,7 +8548,7 @@ rb_ary_deconstruct(VALUE ary)
  *
  *  == Obtaining Information about an \Array
  *
- *  Arrays keep track of their own length at all times.  To query an array
+ *  An array keeps track of its 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']
@@ -8500,7 +8563,7 @@ rb_ary_deconstruct(VALUE ary)
  *
  *    browsers.include?('Konqueror') #=> false
  *
- *  == Adding Items to Arrays
+ *  == Adding Items to an \Array
  *
  *  Items can be added to the end of an array by using either #push or #<<
  *
@@ -8561,11 +8624,11 @@ rb_ary_deconstruct(VALUE ary)
  *     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
+ *  == Iterating over an \Array
  *
- *  Like all classes that include the Enumerable module, \Array has an each
+ *  Like all classes that include the Enumerable module, class \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
+ *  case of Array#each, all elements in +self+ are yielded to
  *  the supplied block in sequence.
  *
  *  Note that this operation leaves the array unchanged.
@@ -8625,7 +8688,7 @@ rb_ary_deconstruct(VALUE ary)
  *
  *  == What's Here
  *
- *  First, what's elsewhere. \Class \Array:
+ *  First, what's elsewhere. Class \Array:
  *
  *  - Inherits from {class Object}[rdoc-ref:Object@What-27s+Here].
  *  - Includes {module Enumerable}[rdoc-ref:Enumerable@What-27s+Here],
@@ -8650,148 +8713,132 @@ rb_ary_deconstruct(VALUE ary)
  *  - ::new: Returns a new array.
  *  - ::try_convert: Returns a new array created from a given object.
  *
+ *  See also {Creating Arrays}[rdoc-ref:Array@Creating+Arrays].
+ *
  *  === Methods for Querying
  *
- *  - #length, #size: Returns the count of elements.
- *  - #include?: Returns whether any element <tt>==</tt> a given object.
- *  - #empty?: Returns whether there are no elements.
  *  - #all?: Returns whether all elements meet a given criterion.
  *  - #any?: Returns whether any element meets a given criterion.
+ *  - #count: Returns the count of elements that meet a given criterion.
+ *  - #empty?: Returns whether there are no elements.
+ *  - #find_index (aliased as #index): Returns the index of the first element that meets a given criterion.
+ *  - #hash: Returns the integer hash code.
+ *  - #include?: Returns whether any element <tt>==</tt> a given object.
+ *  - #length (aliased as #size): Returns the count of elements.
  *  - #none?: Returns whether no element <tt>==</tt> a given object.
  *  - #one?: Returns whether exactly one element <tt>==</tt> a given object.
- *  - #count: Returns the count of elements that meet a given criterion.
- *  - #find_index, #index: Returns the index of the first element that meets a given criterion.
  *  - #rindex: Returns the index of the last element that meets a given criterion.
- *  - #hash: Returns the integer hash code.
  *
  *  === Methods for Comparing
  *
- *  - #<=>: Returns -1, 0, or 1 * as +self+ is less than, equal to, or
- *    greater than a given object.
- *  - #==: Returns whether each element in +self+ is <tt>==</tt> to the corresponding element
- *    in a given object.
- *  - #eql?: Returns whether each element in +self+ is <tt>eql?</tt> to the corresponding
- *    element in a given object.
+ *  - #<=>: Returns -1, 0, or 1, as +self+ is less than, equal to, or greater than a given object.
+ *  - #==: Returns whether each element in +self+ is <tt>==</tt> to the corresponding element in a given object.
+ *  - #eql?: Returns whether each element in +self+ is <tt>eql?</tt> to the corresponding element in a given object.
 
  *  === Methods for Fetching
  *
  *  These methods do not modify +self+.
  *
- *  - #[]: Returns one or more elements.
- *  - #fetch: Returns the element at a given offset.
- *  - #first: Returns one or more leading elements.
- *  - #last: Returns one or more trailing elements.
- *  - #max: Returns one or more maximum-valued elements,
- *    as determined by <tt><=></tt> or a given block.
- *  - #min: Returns one or more minimum-valued elements,
- *    as determined by <tt><=></tt> or a given block.
- *  - #minmax: Returns the minimum-valued and maximum-valued elements,
- *    as determined by <tt><=></tt> or a given block.
- *  - #assoc: Returns the first element that is an array
- *    whose first element <tt>==</tt> a given object.
- *  - #rassoc: Returns the first element that is an array
- *    whose second element <tt>==</tt> a given object.
+ *  - #[] (aliased as #slice): Returns consecutive elements as determined by a given argument.
+ *  - #assoc: Returns the first element that is an array whose first element <tt>==</tt> a given object.
  *  - #at: Returns the element at a given offset.
- *  - #values_at: Returns the elements at given offsets.
- *  - #dig: Returns the object in nested objects
- *    that is specified by a given index and additional arguments.
+ *  - #bsearch: Returns an element selected via a binary search as determined by a given block.
+ *  - #bsearch_index: Returns the index of an element selected via a binary search as determined by a given block.
+ *  - #compact: Returns an array containing all non-+nil+ elements.
+ *  - #dig: Returns the object in nested objects that is specified by a given index and additional arguments.
  *  - #drop: Returns trailing elements as determined by a given index.
- *  - #take: Returns leading elements as determined by a given index.
  *  - #drop_while: Returns trailing elements as determined by a given block.
- *  - #take_while: Returns leading elements as determined by a given block.
- *  - #slice: Returns consecutive elements as determined by a given argument.
- *  - #sort: Returns all elements in an order determined by <tt><=></tt> or a given block.
+ *  - #fetch: Returns the element at a given offset.
+ *  - #fetch_values: Returns elements at given offsets.
+ *  - #first: Returns one or more leading elements.
+ *  - #last: Returns one or more trailing elements.
+ *  - #max: Returns one or more maximum-valued elements, as determined by <tt>#<=></tt> or a given block.
+ *  - #min: Returns one or more minimum-valued elements, as determined by <tt>#<=></tt> or a given block.
+ *  - #minmax: Returns the minimum-valued and maximum-valued elements, as determined by <tt>#<=></tt> or a given block.
+ *  - #rassoc: Returns the first element that is an array whose second element <tt>==</tt> a given object.
+ *  - #reject: Returns an array containing elements not rejected by a given block.
  *  - #reverse: Returns all elements in reverse order.
- *  - #compact: Returns an array containing all non-+nil+ elements.
- *  - #select, #filter: Returns an array containing elements selected by a given block.
- *  - #uniq: Returns an array containing non-duplicate elements.
  *  - #rotate: Returns all elements with some rotated from one end to the other.
- *  - #bsearch: Returns an element selected via a binary search
- *    as determined by a given block.
- *  - #bsearch_index: Returns the index of an element selected via a binary search
- *    as determined by a given block.
  *  - #sample: Returns one or more random elements.
+ *  - #select (aliased as #filter): Returns an array containing elements selected by a given block.
  *  - #shuffle: Returns elements in a random order.
+ *  - #sort: Returns all elements in an order determined by <tt>#<=></tt> or a given block.
+ *  - #take: Returns leading elements as determined by a given index.
+ *  - #take_while: Returns leading elements as determined by a given block.
+ *  - #uniq: Returns an array containing non-duplicate elements.
+ *  - #values_at: Returns the elements at given offsets.
  *
  *  === Methods for Assigning
  *
  *  These methods add, replace, or reorder elements in +self+.
  *
+ *  - #<<: Appends an element.
  *  - #[]=: Assigns specified elements with a given object.
- *  - #push, #append, #<<: Appends trailing elements.
- *  - #unshift, #prepend: Prepends leading elements.
- *  - #insert: Inserts given objects at a given offset; does not replace elements.
  *  - #concat: Appends all elements from given arrays.
  *  - #fill: Replaces specified elements with specified objects.
- *  - #replace: Replaces the content of +self+ with the content of a given array.
+ *  - #flatten!: Replaces each nested array in +self+ with the elements from that array.
+ *  - #initialize_copy (aliased as #replace): Replaces the content of +self+ with the content of a given array.
+ *  - #insert: Inserts given objects at a given offset; does not replace elements.
+ *  - #push (aliased as #append): Appends elements.
  *  - #reverse!: Replaces +self+ with its elements reversed.
  *  - #rotate!: Replaces +self+ with its elements rotated.
  *  - #shuffle!: Replaces +self+ with its elements in random order.
- *  - #sort!: Replaces +self+ with its elements sorted,
- *    as determined by <tt><=></tt> or a given block.
+ *  - #sort!: Replaces +self+ with its elements sorted, as determined by <tt>#<=></tt> or a given block.
  *  - #sort_by!: Replaces +self+ with its elements sorted, as determined by a given block.
+ *  - #unshift (aliased as #prepend): Prepends leading elements.
  *
  *  === Methods for Deleting
  *
  *  Each of these methods removes elements from +self+:
  *
- *  - #pop: Removes and returns the last element.
- *  - #shift:  Removes and returns the first element.
- *  - #compact!: Removes all non-+nil+ elements.
+ *  - #clear: Removes all elements.
+ *  - #compact!: Removes all +nil+ elements.
  *  - #delete: Removes elements equal to a given object.
  *  - #delete_at: Removes the element at a given offset.
  *  - #delete_if: Removes elements specified by a given block.
  *  - #keep_if: Removes elements not specified by a given block.
+ *  - #pop: Removes and returns the last element.
  *  - #reject!: Removes elements specified by a given block.
- *  - #select!, #filter!: Removes elements not specified by a given block.
+ *  - #select! (aliased as #filter!): Removes elements not specified by a given block.
+ *  - #shift:  Removes and returns the first element.
  *  - #slice!: Removes and returns a sequence of elements.
  *  - #uniq!: Removes duplicates.
  *
  *  === Methods for Combining
  *
  *  - #&: Returns an array containing elements found both in +self+ and a given array.
- *  - #intersection: Returns an array containing elements found both in +self+
- *    and in each given array.
  *  - #+: Returns an array containing all elements of +self+ followed by all elements of a given array.
  *  - #-: Returns an array containing all elements of +self+ that are not found in a given array.
- *  - #|: Returns an array containing all elements of +self+ and all elements of a given array,
- *    duplicates removed.
- *  - #union: Returns an array containing all elements of +self+ and all elements of given arrays,
- *    duplicates removed.
- *  - #difference: Returns an array containing all elements of +self+ that are not found
- *    in any of the given arrays..
+ *  - #|: Returns an array containing all element of +self+ and all elements of a given array, duplicates removed.
+ *  - #difference: Returns an array containing all elements of +self+ that are not found in any of the given arrays..
+ *  - #intersection: Returns an array containing elements found both in +self+ and in each given array.
  *  - #product: Returns or yields all combinations of elements from +self+ and given arrays.
+ *  - #reverse: Returns an array containing all elements of +self+ in reverse order.
+ *  - #union: Returns an array containing all elements of +self+ and all elements of given arrays, duplicates removed.
  *
  *  === Methods for Iterating
  *
+ *  - #combination: Calls a given block with combinations of elements of +self+; a combination does not use the same element more than once.
+ *  - #cycle: Calls a given block with each element, then does so again, for a specified number of times, or forever.
  *  - #each: Passes each element to a given block.
- *  - #reverse_each:  Passes each element, in reverse order, to a given block.
  *  - #each_index: Passes each element index to a given block.
- *  - #cycle: Calls a given block with each element, then does so again,
- *    for a specified number of times, or forever.
- *  - #combination: Calls a given block with combinations of elements of +self+;
- *    a combination does not use the same element more than once.
- *  - #permutation: Calls a given block with permutations of elements of +self+;
- *    a permutation does not use the same element more than once.
- *  - #repeated_combination: Calls a given block with combinations of elements of +self+;
- *    a combination may use the same element more than once.
- *  - #repeated_permutation: Calls a given block with permutations of elements of +self+;
- *    a permutation may use the same element more than once.
+ *  - #permutation: Calls a given block with permutations of elements of +self+; a permutation does not use the same element more than once.
+ *  - #repeated_combination: Calls a given block with combinations of elements of +self+; a combination may use the same element more than once.
+ *  - #repeated_permutation: Calls a given block with permutations of elements of +self+; a permutation may use the same element more than once.
+ *  - #reverse_each:  Passes each element, in reverse order, to a given block.
  *
  *  === Methods for Converting
  *
- *  - #map, #collect: Returns an array containing the block return-value for each element.
- *  - #map!, #collect!: Replaces each element with a block return-value.
+ *  - #collect (aliased as #map): Returns an array containing the block return-value for each element.
+ *  - #collect! (aliased as #map!): Replaces each element with a block return-value.
  *  - #flatten: Returns an array that is a recursive flattening of +self+.
- *  - #flatten!: Replaces each nested array in +self+ with the elements from that array.
- *  - #inspect, #to_s: Returns a new String containing the elements.
- *  - #join: Returns a newsString containing the elements joined by the field separator.
+ *  - #inspect (aliased as #to_s): Returns a new String containing the elements.
+ *  - #join: Returns a new String containing the elements joined by the field separator.
  *  - #to_a: Returns +self+ or a new array containing all elements.
  *  - #to_ary: Returns +self+.
  *  - #to_h: Returns a new hash formed from the elements.
  *  - #transpose: Transposes +self+, which must be an array of arrays.
- *  - #zip: Returns a new array of arrays containing +self+ and given arrays;
- *    follow the link for details.
+ *  - #zip: Returns a new array of arrays containing +self+ and given arrays.
  *
  *  === Other Methods
  *
@@ -8802,7 +8849,6 @@ rb_ary_deconstruct(VALUE ary)
  *    - With string argument +field_separator+, a new string that is equivalent to
  *      <tt>join(field_separator)</tt>.
  *
- *  - #abbrev: Returns a hash of unambiguous abbreviations for elements.
  *  - #pack: Packs the elements into a binary sequence.
  *  - #sum: Returns a sum of elements according to either <tt>+</tt> or a given block.
  */
@@ -8810,6 +8856,8 @@ rb_ary_deconstruct(VALUE ary)
 void
 Init_Array(void)
 {
+    fake_ary_flags = init_fake_ary_flags();
+
     rb_cArray  = rb_define_class("Array", rb_cObject);
     rb_include_module(rb_cArray, rb_mEnumerable);
 
@@ -8834,8 +8882,6 @@ Init_Array(void)
     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);
@@ -8855,6 +8901,9 @@ Init_Array(void)
     rb_define_method(rb_cArray, "length", rb_ary_length, 0);
     rb_define_method(rb_cArray, "size", rb_ary_length, 0);
     rb_define_method(rb_cArray, "empty?", rb_ary_empty_p, 0);
+    rb_define_method(rb_cArray, "find", rb_ary_find, -1);
+    rb_define_method(rb_cArray, "detect", rb_ary_find, -1);
+    rb_define_method(rb_cArray, "rfind", rb_ary_rfind, -1);
     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);
@@ -8932,8 +8981,12 @@ Init_Array(void)
     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, "freeze", rb_ary_freeze, 0);
 
     rb_define_method(rb_cArray, "deconstruct", rb_ary_deconstruct, 0);
+
+    rb_cArray_empty_frozen = RB_OBJ_SET_SHAREABLE(rb_ary_freeze(rb_ary_new()));
+    rb_vm_register_global_object(rb_cArray_empty_frozen);
 }
 
 #include "array.rbinc"
diff --git a/array.rb b/array.rb
index b9fa9844e6..81beff0b1c 100644
--- a/array.rb
+++ b/array.rb
@@ -1,62 +1,97 @@
 class Array
   # call-seq:
-  #    array.shuffle!(random: Random) -> array
+  #   shuffle!(random: Random) -> self
   #
-  # Shuffles the elements of +self+ in place.
-  #    a = [1, 2, 3] #=> [1, 2, 3]
-  #    a.shuffle!    #=> [2, 3, 1]
-  #    a             #=> [2, 3, 1]
+  # Shuffles all elements in +self+ into a random order,
+  # as selected by the object given by the keyword argument +random+.
+  # Returns +self+:
   #
-  # The optional +random+ argument will be used as the random number generator:
-  #    a.shuffle!(random: Random.new(1))  #=> [1, 3, 2]
+  #   a =             [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+  #   a.shuffle! # => [5, 3, 8, 7, 6, 1, 9, 4, 2, 0]
+  #   a.shuffle! # => [9, 4, 0, 6, 2, 8, 1, 5, 3, 7]
+  #
+  # Duplicate elements are included:
+  #
+  #   a =             [0, 1, 0, 1, 0, 1, 0, 1, 0, 1]
+  #   a.shuffle! # => [1, 0, 0, 1, 1, 0, 1, 0, 0, 1]
+  #   a.shuffle! # => [0, 1, 0, 1, 1, 0, 1, 0, 1, 0]
+  #
+  # The object given with the keyword argument +random+ is used as the random number generator.
+  #
+  # Related: see {Methods for Assigning}[rdoc-ref:Array@Methods+for+Assigning].
   def shuffle!(random: Random)
     Primitive.rb_ary_shuffle_bang(random)
   end
 
   # call-seq:
-  #    array.shuffle(random: Random) -> new_ary
+  #   shuffle(random: Random) -> new_array
+  #
+  # Returns a new array containing all elements from +self+ in a random order,
+  # as selected by the object given by the keyword argument +random+:
+  #
+  #   a =            [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+  #   a.shuffle # => [0, 8, 1, 9, 6, 3, 4, 7, 2, 5]
+  #   a.shuffle # => [8, 9, 0, 5, 1, 2, 6, 4, 7, 3]
   #
-  # Returns a new array with elements of +self+ shuffled.
-  #    a = [1, 2, 3] #=> [1, 2, 3]
-  #    a.shuffle     #=> [2, 3, 1]
-  #    a             #=> [1, 2, 3]
+  # Duplicate elements are included:
   #
-  # The optional +random+ argument will be used as the random number generator:
-  #    a.shuffle(random: Random.new(1))  #=> [1, 3, 2]
+  #   a =            [0, 1, 0, 1, 0, 1, 0, 1, 0, 1]
+  #   a.shuffle # => [1, 0, 1, 1, 0, 0, 1, 0, 0, 1]
+  #   a.shuffle # => [1, 1, 0, 0, 0, 1, 1, 0, 0, 1]
+  #
+  # The object given with the keyword argument +random+ is used as the random number generator.
+  #
+  # Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
   def shuffle(random: Random)
     Primitive.rb_ary_shuffle(random)
   end
 
   # call-seq:
-  #    array.sample(random: Random) -> object
-  #    array.sample(n, random: Random) -> new_ary
+  #   sample(random: Random) -> object
+  #   sample(count, random: Random) -> new_ary
   #
-  # Returns random elements from +self+.
+  # Returns random elements from +self+,
+  # as selected by the object given by the keyword argument +random+.
   #
-  # 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+.
+  # With no argument +count+ given, returns one random element from +self+:
+  #
+  #   a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+  #   a.sample # => 3
+  #   a.sample # => 8
+  #
+  # Returns +nil+ if +self+ is empty:
+  #
+  #   [].sample # => nil
+  #
+  # With a non-negative numeric argument +count+ given,
+  # returns a new array containing +count+ random elements from +self+:
+  #
+  #   a.sample(3) # => [8, 9, 2]
+  #   a.sample(6) # => [9, 6, 0, 3, 1, 4]
+  #
+  # The order of the result array is unrelated to the order of +self+.
+  #
+  # Returns a new empty array if +self+ is empty:
+  #
+  #   [].sample(4) # => []
+  #
+  # May return duplicates in +self+:
+  #
+  #   a = [1, 1, 1, 2, 2, 3]
+  #   a.sample(a.size) # => [1, 1, 3, 2, 1, 2]
   #
-  # When argument +n+ is given, returns a new \Array containing +n+ random
-  # elements from +self+:
-  #    a.sample(3) # => [8, 9, 2]
-  #    a.sample(6) # => [9, 6, 10, 3, 1, 4]
   # Returns no more than <tt>a.size</tt> elements
   # (because no new duplicates are introduced):
-  #    a.sample(a.size * 2) # => [6, 4, 1, 8, 5, 9, 10, 2, 3, 7]
-  # But +self+ may contain duplicates:
-  #    a = [1, 1, 1, 2, 2, 3]
-  #    a.sample(a.size * 2) # => [1, 1, 3, 2, 1, 2]
-  # The argument +n+ must be a non-negative numeric value.
-  # The order of the result array is unrelated to the order of +self+.
-  # 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]
+  #   a.sample(50) # => [6, 4, 1, 8, 5, 9, 0, 2, 3, 7]
+  #
+  # The object given with the keyword argument +random+ is 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]
+  #
+  # Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
   def sample(n = (ary = false), random: Random)
     if Primitive.mandatory_only?
       # Primitive.cexpr! %{ rb_ary_sample(self, rb_cRandom, Qfalse, Qfalse) }
@@ -66,4 +101,187 @@ class Array
       Primitive.ary_sample(random, n, ary)
     end
   end
+
+  # call-seq:
+  #   first -> object or nil
+  #   first(count) -> new_array
+  #
+  # Returns elements from +self+, or +nil+; does not modify +self+.
+  #
+  # With no argument given, returns the first element (if available):
+  #
+  #   a = [:foo, 'bar', 2]
+  #   a.first # => :foo
+  #   a # => [:foo, "bar", 2]
+  #
+  # If +self+ is empty, returns +nil+.
+  #
+  #   [].first # => nil
+  #
+  # With a non-negative integer argument +count+ given,
+  # returns the first +count+ elements (as available) in a new array:
+  #
+  #   a.first(0)  # => []
+  #   a.first(2)  # => [:foo, "bar"]
+  #   a.first(50) # => [:foo, "bar", 2]
+  #
+  # Related: see {Methods for Querying}[rdoc-ref:Array@Methods+for+Querying].
+  def first n = unspecified = true
+    if Primitive.mandatory_only?
+      Primitive.attr! :leaf
+      Primitive.cexpr! %q{ ary_first(self) }
+    else
+      if unspecified
+        Primitive.cexpr! %q{ ary_first(self) }
+      else
+        Primitive.cexpr! %q{  ary_take_first_or_last_n(self, NUM2LONG(n), ARY_TAKE_FIRST) }
+      end
+    end
+  end
+
+  # call-seq:
+  #  last  -> last_object or nil
+  #  last(count) -> new_array
+  #
+  # Returns elements from +self+, or +nil+; +self+ is not modified.
+  #
+  # With no argument given, returns the last element, or +nil+ if +self+ is empty:
+  #
+  #   a = [:foo, 'bar', 2]
+  #   a.last # => 2
+  #   a # => [:foo, "bar", 2]
+  #   [].last # => nil
+  #
+  #
+  # With non-negative integer argument +count+ given,
+  # returns a new array containing the trailing +count+ elements of +self+, as available:
+  #
+  #   a = [:foo, 'bar', 2]
+  #   a.last(2)  # => ["bar", 2]
+  #   a.last(50) # => [:foo, "bar", 2]
+  #   a.last(0)  # => []
+  #   [].last(3) # => []
+  #
+  # Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
+  def last n = unspecified = true
+    if Primitive.mandatory_only?
+      Primitive.attr! :leaf
+      Primitive.cexpr! %q{ ary_last(self) }
+    else
+      if unspecified
+        Primitive.cexpr! %q{ ary_last(self) }
+      else
+        Primitive.cexpr! %q{ ary_take_first_or_last_n(self, NUM2LONG(n), ARY_TAKE_LAST) }
+      end
+    end
+  end
+
+  # call-seq:
+  #   fetch_values(*indexes) -> new_array
+  #   fetch_values(*indexes) { |index| ... } -> new_array
+  #
+  # With no block given, returns a new array containing the elements of +self+
+  # at the offsets specified by +indexes+. Each of the +indexes+ must be an
+  # {integer-convertible object}[rdoc-ref:implicit_conversion.rdoc@Integer-Convertible+Objects]:
+  #
+  #    a = [:foo, :bar, :baz]
+  #    a.fetch_values(2, 0)   # => [:baz, :foo]
+  #    a.fetch_values(2.1, 0) # => [:baz, :foo]
+  #    a.fetch_values         # => []
+  #
+  # For a negative index, counts backwards from the end of the array:
+  #
+  #    a.fetch_values(-2, -1) # [:bar, :baz]
+  #
+  # When no block is given, raises an exception if any index is out of range.
+  #
+  # With a block given, for each index:
+  #
+  # - If the index is in range, uses an element of +self+ (as above).
+  # - Otherwise, calls the block with the index and uses the block's return value.
+  #
+  # Example:
+  #
+  #   a = [:foo, :bar, :baz]
+  #   a.fetch_values(1, 0, 42, 777) { |index| index.to_s }
+  #   # => [:bar, :foo, "42", "777"]
+  #
+  # Related: see {Methods for Fetching}[rdoc-ref:Array@Methods+for+Fetching].
+  def fetch_values(*indexes, &block)
+    indexes.map! { |i| fetch(i, &block) }
+    indexes
+  end
+
+  with_jit do
+    if Primitive.rb_builtin_basic_definition_p(:each)
+      undef :each
+
+      def each # :nodoc:
+        Primitive.attr! :inline_block, :c_trace
+
+        unless defined?(yield)
+          return Primitive.cexpr! 'SIZED_ENUMERATOR(self, 0, 0, ary_enum_length)'
+        end
+        _i = 0
+        value = nil
+        while Primitive.cexpr!(%q{ ary_fetch_next(self, LOCAL_PTR(_i), LOCAL_PTR(value)) })
+          yield value
+        end
+        self
+      end
+    end
+
+    if Primitive.rb_builtin_basic_definition_p(:map)
+      undef :map
+
+      def map # :nodoc:
+        Primitive.attr! :inline_block, :c_trace
+
+        unless defined?(yield)
+          return Primitive.cexpr! 'SIZED_ENUMERATOR(self, 0, 0, ary_enum_length)'
+        end
+
+        _i = 0
+        value = nil
+        result = Primitive.ary_sized_alloc
+        while Primitive.cexpr!(%q{ ary_fetch_next(self, LOCAL_PTR(_i), LOCAL_PTR(value)) })
+          value = yield(value)
+          Primitive.cexpr!(%q{ rb_ary_push(result, value) })
+        end
+        result
+      end
+
+      if Primitive.rb_builtin_basic_definition_p(:collect)
+        undef :collect
+        alias collect map
+      end
+    end
+
+    if Primitive.rb_builtin_basic_definition_p(:select)
+      undef :select
+
+      def select # :nodoc:
+        Primitive.attr! :inline_block, :c_trace
+
+        unless defined?(yield)
+          return Primitive.cexpr! 'SIZED_ENUMERATOR(self, 0, 0, ary_enum_length)'
+        end
+
+        _i = 0
+        value = nil
+        result = Primitive.ary_sized_alloc
+        while Primitive.cexpr!(%q{ ary_fetch_next(self, LOCAL_PTR(_i), LOCAL_PTR(value)) })
+          if yield value
+            Primitive.cexpr!(%q{ rb_ary_push(result, value) })
+          end
+        end
+        result
+      end
+
+      if Primitive.rb_builtin_basic_definition_p(:filter)
+        undef :filter
+        alias filter select
+      end
+    end
+  end
 end
diff --git a/ast.c b/ast.c
index 93c33a1f8d..5357aa38a5 100644
--- a/ast.c
+++ b/ast.c
@@ -1,6 +1,6 @@
 /* indent-tabs-mode: nil */
 #include "internal.h"
-#include "internal/parse.h"
+#include "internal/ruby_parser.h"
 #include "internal/symbol.h"
 #include "internal/warnings.h"
 #include "iseq.h"
@@ -14,9 +14,10 @@
 
 static VALUE rb_mAST;
 static VALUE rb_cNode;
+static VALUE rb_cLocation;
 
 struct ASTNodeData {
-    rb_ast_t *ast;
+    VALUE ast_value;
     const NODE *node;
 };
 
@@ -24,14 +25,20 @@ static void
 node_gc_mark(void *ptr)
 {
     struct ASTNodeData *data = (struct ASTNodeData *)ptr;
-    rb_gc_mark((VALUE)data->ast);
+    rb_gc_mark(data->ast_value);
 }
 
 static size_t
 node_memsize(const void *ptr)
 {
     struct ASTNodeData *data = (struct ASTNodeData *)ptr;
-    return rb_ast_memsize(data->ast);
+    size_t size = sizeof(struct ASTNodeData);
+    if (data->ast_value) {
+        rb_ast_t *ast = rb_ruby_ast_data_get(data->ast_value);
+        size += rb_ast_memsize(ast);
+    }
+
+    return size;
 }
 
 static const rb_data_type_t rb_node_type = {
@@ -41,31 +48,57 @@ static const rb_data_type_t rb_node_type = {
     RUBY_TYPED_FREE_IMMEDIATELY,
 };
 
+struct ASTLocationData {
+    int first_lineno;
+    int first_column;
+    int last_lineno;
+    int last_column;
+};
+
+static void
+location_gc_mark(void *ptr)
+{
+}
+
+static size_t
+location_memsize(const void *ptr)
+{
+    return sizeof(struct ASTLocationData);
+}
+
+static const rb_data_type_t rb_location_type = {
+    "AST/location",
+    {location_gc_mark, RUBY_TYPED_DEFAULT_FREE, location_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)
+setup_node(VALUE obj, VALUE ast_value, const NODE *node)
 {
     struct ASTNodeData *data;
 
     TypedData_Get_Struct(obj, struct ASTNodeData, &rb_node_type, data);
-    data->ast = ast;
+    data->ast_value = ast_value;
     data->node = node;
 }
 
 static VALUE
-ast_new_internal(rb_ast_t *ast, const NODE *node)
+ast_new_internal(VALUE ast_value, const NODE *node)
 {
     VALUE obj;
 
     obj = rb_ast_node_alloc(rb_cNode);
-    setup_node(obj, ast, node);
+    setup_node(obj, ast_value, node);
 
     return obj;
 }
 
-static VALUE rb_ast_parse_str(VALUE str, VALUE keep_script_lines, VALUE error_tolerant);
-static VALUE rb_ast_parse_file(VALUE path, VALUE keep_script_lines, VALUE error_tolerant);
+static VALUE rb_ast_parse_str(VALUE str, VALUE keep_script_lines, VALUE error_tolerant, VALUE keep_tokens);
+static VALUE rb_ast_parse_file(VALUE path, VALUE keep_script_lines, VALUE error_tolerant, VALUE keep_tokens);
 
 static VALUE
 ast_parse_new(void)
@@ -74,86 +107,77 @@ ast_parse_new(void)
 }
 
 static VALUE
-ast_parse_done(rb_ast_t *ast)
+ast_parse_done(VALUE ast_value)
 {
+    rb_ast_t *ast = rb_ruby_ast_data_get(ast_value);
+
     if (!ast->body.root) {
         rb_ast_dispose(ast);
         rb_exc_raise(GET_EC()->errinfo);
     }
 
-    return ast_new_internal(ast, (NODE *)ast->body.root);
+    return ast_new_internal(ast_value, (NODE *)ast->body.root);
 }
 
 static VALUE
-ast_s_parse(rb_execution_context_t *ec, VALUE module, VALUE str, VALUE keep_script_lines, VALUE error_tolerant)
+setup_vparser(VALUE keep_script_lines, VALUE error_tolerant, VALUE keep_tokens)
 {
-    return rb_ast_parse_str(str, keep_script_lines, error_tolerant);
+    VALUE vparser = ast_parse_new();
+    if (RTEST(keep_script_lines)) rb_parser_set_script_lines(vparser);
+    if (RTEST(error_tolerant)) rb_parser_error_tolerant(vparser);
+    if (RTEST(keep_tokens)) rb_parser_keep_tokens(vparser);
+    return vparser;
 }
 
 static VALUE
-rb_ast_parse_str(VALUE str, VALUE keep_script_lines, VALUE error_tolerant)
+ast_s_parse(rb_execution_context_t *ec, VALUE module, VALUE str, VALUE keep_script_lines, VALUE error_tolerant, VALUE keep_tokens)
 {
-    rb_ast_t *ast = 0;
+    return rb_ast_parse_str(str, keep_script_lines, error_tolerant, keep_tokens);
+}
 
+static VALUE
+rb_ast_parse_str(VALUE str, VALUE keep_script_lines, VALUE error_tolerant, VALUE keep_tokens)
+{
+    VALUE ast_value = Qnil;
     StringValue(str);
-    VALUE vparser = ast_parse_new();
-    if (RTEST(keep_script_lines)) rb_parser_keep_script_lines(vparser);
-    if (RTEST(error_tolerant)) rb_parser_error_tolerant(vparser);
-    ast = rb_parser_compile_string_path(vparser, Qnil, str, 1);
-    return ast_parse_done(ast);
+    VALUE vparser = setup_vparser(keep_script_lines, error_tolerant, keep_tokens);
+    ast_value = rb_parser_compile_string_path(vparser, Qnil, str, 1);
+    return ast_parse_done(ast_value);
 }
 
 static VALUE
-ast_s_parse_file(rb_execution_context_t *ec, VALUE module, VALUE path, VALUE keep_script_lines, VALUE error_tolerant)
+ast_s_parse_file(rb_execution_context_t *ec, VALUE module, VALUE path, VALUE keep_script_lines, VALUE error_tolerant, VALUE keep_tokens)
 {
-    return rb_ast_parse_file(path, keep_script_lines, error_tolerant);
+    return rb_ast_parse_file(path, keep_script_lines, error_tolerant, keep_tokens);
 }
 
 static VALUE
-rb_ast_parse_file(VALUE path, VALUE keep_script_lines, VALUE error_tolerant)
+rb_ast_parse_file(VALUE path, VALUE keep_script_lines, VALUE error_tolerant, VALUE keep_tokens)
 {
     VALUE f;
-    rb_ast_t *ast = 0;
+    VALUE ast_value = Qnil;
     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("-"));
-    VALUE vparser = ast_parse_new();
-    if (RTEST(keep_script_lines)) rb_parser_keep_script_lines(vparser);
-    if (RTEST(error_tolerant))  rb_parser_error_tolerant(vparser);
-    ast = rb_parser_compile_file_path(vparser, Qnil, f, 1);
+    VALUE vparser = setup_vparser(keep_script_lines, error_tolerant, keep_tokens);
+    ast_value = rb_parser_compile_file_path(vparser, 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;
+    return ast_parse_done(ast_value);
 }
 
 static VALUE
-rb_ast_parse_array(VALUE array, VALUE keep_script_lines, VALUE error_tolerant)
+rb_ast_parse_array(VALUE array, VALUE keep_script_lines, VALUE error_tolerant, VALUE keep_tokens)
 {
-    rb_ast_t *ast = 0;
+    VALUE ast_value = Qnil;
 
     array = rb_check_array_type(array);
-    VALUE vparser = ast_parse_new();
-    if (RTEST(keep_script_lines)) rb_parser_keep_script_lines(vparser);
-    if (RTEST(error_tolerant)) rb_parser_error_tolerant(vparser);
-    ast = rb_parser_compile_generic(vparser, lex_array, Qnil, array, 1);
-    return ast_parse_done(ast);
+    VALUE vparser = setup_vparser(keep_script_lines, error_tolerant, keep_tokens);
+    ast_value = rb_parser_compile_array(vparser, Qnil, array, 1);
+    return ast_parse_done(ast_value);
 }
 
-static VALUE node_children(rb_ast_t*, const NODE*);
+static VALUE node_children(VALUE, const NODE*);
 
 static VALUE
 node_find(VALUE self, const int node_id)
@@ -165,7 +189,7 @@ node_find(VALUE self, const int node_id)
 
     if (nd_node_id(data->node) == node_id) return self;
 
-    ary = node_children(data->ast, data->node);
+    ary = node_children(data->ast_value, data->node);
 
     for (i = 0; i < RARRAY_LEN(ary); i++) {
         VALUE child = RARRAY_AREF(ary, i);
@@ -182,23 +206,14 @@ node_find(VALUE self, const int node_id)
 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
 node_id_for_backtrace_location(rb_execution_context_t *ec, VALUE module, VALUE location)
 {
     int node_id;
+
+    if (!rb_frame_info_p(location)) {
+        rb_raise(rb_eTypeError, "Thread::Backtrace::Location object expected");
+    }
+
     node_id = rb_get_node_id_from_frame_info(location);
     if (node_id == -1) {
         return Qnil;
@@ -208,7 +223,7 @@ node_id_for_backtrace_location(rb_execution_context_t *ec, VALUE module, VALUE l
 }
 
 static VALUE
-ast_s_of(rb_execution_context_t *ec, VALUE module, VALUE body, VALUE keep_script_lines, VALUE error_tolerant)
+ast_s_of(rb_execution_context_t *ec, VALUE module, VALUE body, VALUE keep_script_lines, VALUE error_tolerant, VALUE keep_tokens)
 {
     VALUE node, lines = Qnil;
     const rb_iseq_t *iseq;
@@ -237,6 +252,11 @@ ast_s_of(rb_execution_context_t *ec, VALUE module, VALUE body, VALUE keep_script
     if (!iseq) {
         return Qnil;
     }
+
+    if (ISEQ_BODY(iseq)->prism) {
+        rb_raise(rb_eRuntimeError, "cannot get AST for ISEQ compiled by prism");
+    }
+
     lines = ISEQ_BODY(iseq)->variable.script_lines;
 
     VALUE path = rb_iseq_path(iseq);
@@ -246,14 +266,14 @@ ast_s_of(rb_execution_context_t *ec, VALUE module, VALUE body, VALUE keep_script
         rb_raise(rb_eArgError, "cannot get AST for method defined in eval");
     }
 
-    if (!NIL_P(lines) || !NIL_P(lines = script_lines(path))) {
-        node = rb_ast_parse_array(lines, keep_script_lines, error_tolerant);
+    if (!NIL_P(lines)) {
+        node = rb_ast_parse_array(lines, keep_script_lines, error_tolerant, keep_tokens);
     }
     else if (e_option) {
-        node = rb_ast_parse_str(rb_e_script, keep_script_lines, error_tolerant);
+        node = rb_ast_parse_str(rb_e_script, keep_script_lines, error_tolerant, keep_tokens);
     }
     else {
-        node = rb_ast_parse_file(path, keep_script_lines, error_tolerant);
+        node = rb_ast_parse_file(path, keep_script_lines, error_tolerant, keep_tokens);
     }
 
     return node_find(node, node_id);
@@ -292,10 +312,10 @@ ast_node_node_id(rb_execution_context_t *ec, VALUE self)
     return INT2FIX(nd_node_id(data->node));
 }
 
-#define NEW_CHILD(ast, node) node ? ast_new_internal(ast, node) : Qnil
+#define NEW_CHILD(ast_value, node) (node ? ast_new_internal(ast_value, node) : Qnil)
 
 static VALUE
-rb_ary_new_from_node_args(rb_ast_t *ast, long n, ...)
+rb_ary_new_from_node_args(VALUE ast_value, long n, ...)
 {
     va_list ar;
     VALUE ary;
@@ -307,39 +327,57 @@ rb_ary_new_from_node_args(rb_ast_t *ast, long n, ...)
     for (i=0; i<n; i++) {
         NODE *node;
         node = va_arg(ar, NODE *);
-        rb_ary_push(ary, NEW_CHILD(ast, node));
+        rb_ary_push(ary, NEW_CHILD(ast_value, node));
     }
     va_end(ar);
     return ary;
 }
 
 static VALUE
-dump_block(rb_ast_t *ast, const NODE *node)
+dump_block(VALUE ast_value, const struct RNode_BLOCK *node)
 {
     VALUE ary = rb_ary_new();
     do {
-        rb_ary_push(ary, NEW_CHILD(ast, node->nd_head));
+        rb_ary_push(ary, NEW_CHILD(ast_value, node->nd_head));
     } while (node->nd_next &&
         nd_type_p(node->nd_next, NODE_BLOCK) &&
-        (node = node->nd_next, 1));
+        (node = RNODE_BLOCK(node->nd_next), 1));
     if (node->nd_next) {
-        rb_ary_push(ary, NEW_CHILD(ast, node->nd_next));
+        rb_ary_push(ary, NEW_CHILD(ast_value, node->nd_next));
     }
 
     return ary;
 }
 
 static VALUE
-dump_array(rb_ast_t *ast, const NODE *node)
+dump_array(VALUE ast_value, const struct RNode_LIST *node)
 {
     VALUE ary = rb_ary_new();
-    rb_ary_push(ary, NEW_CHILD(ast, node->nd_head));
+    rb_ary_push(ary, NEW_CHILD(ast_value, node->nd_head));
 
     while (node->nd_next && nd_type_p(node->nd_next, NODE_LIST)) {
-        node = node->nd_next;
-        rb_ary_push(ary, NEW_CHILD(ast, node->nd_head));
+        node = RNODE_LIST(node->nd_next);
+        rb_ary_push(ary, NEW_CHILD(ast_value, node->nd_head));
+    }
+    rb_ary_push(ary, NEW_CHILD(ast_value, node->nd_next));
+
+    return ary;
+}
+
+static VALUE
+dump_parser_array(VALUE ast_value, rb_parser_ary_t *p_ary)
+{
+    VALUE ary;
+
+    if (p_ary->data_type != PARSER_ARY_DATA_NODE) {
+        rb_bug("unexpected rb_parser_ary_data_type: %d", p_ary->data_type);
+    }
+
+    ary = rb_ary_new();
+
+    for (long i = 0; i < p_ary->len; i++) {
+        rb_ary_push(ary, NEW_CHILD(ast_value, p_ary->data[i]));
     }
-    rb_ary_push(ary, NEW_CHILD(ast, node->nd_next));
 
     return ary;
 }
@@ -361,307 +399,341 @@ no_name_rest(void)
 }
 
 static VALUE
-rest_arg(rb_ast_t *ast, const NODE *rest_arg)
+rest_arg(VALUE ast_value, const NODE *rest_arg)
 {
-    return NODE_NAMED_REST_P(rest_arg) ? NEW_CHILD(ast, rest_arg) : no_name_rest();
+    return NODE_NAMED_REST_P(rest_arg) ? NEW_CHILD(ast_value, rest_arg) : no_name_rest();
 }
 
 static VALUE
-node_children(rb_ast_t *ast, const NODE *node)
+node_children(VALUE ast_value, const NODE *node)
 {
-    char name[DECIMAL_SIZE_OF_BITS(sizeof(long) * CHAR_BIT) + 2]; /* including '$' */
+    char name[sizeof("$") + DECIMAL_SIZE_OF(long)];
 
     enum node_type type = nd_type(node);
     switch (type) {
       case NODE_BLOCK:
-        return dump_block(ast, node);
+        return dump_block(ast_value, RNODE_BLOCK(node));
       case NODE_IF:
-        return rb_ary_new_from_node_args(ast, 3, node->nd_cond, node->nd_body, node->nd_else);
+        return rb_ary_new_from_node_args(ast_value, 3, RNODE_IF(node)->nd_cond, RNODE_IF(node)->nd_body, RNODE_IF(node)->nd_else);
       case NODE_UNLESS:
-        return rb_ary_new_from_node_args(ast, 3, node->nd_cond, node->nd_body, node->nd_else);
+        return rb_ary_new_from_node_args(ast_value, 3, RNODE_UNLESS(node)->nd_cond, RNODE_UNLESS(node)->nd_body, RNODE_UNLESS(node)->nd_else);
       case NODE_CASE:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_CASE(node)->nd_head, RNODE_CASE(node)->nd_body);
       case NODE_CASE2:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_CASE2(node)->nd_head, RNODE_CASE2(node)->nd_body);
       case NODE_CASE3:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_CASE3(node)->nd_head, RNODE_CASE3(node)->nd_body);
       case NODE_WHEN:
-        return rb_ary_new_from_node_args(ast, 3, node->nd_head, node->nd_body, node->nd_next);
+        return rb_ary_new_from_node_args(ast_value, 3, RNODE_WHEN(node)->nd_head, RNODE_WHEN(node)->nd_body, RNODE_WHEN(node)->nd_next);
       case NODE_IN:
-        return rb_ary_new_from_node_args(ast, 3, node->nd_head, node->nd_body, node->nd_next);
+        return rb_ary_new_from_node_args(ast_value, 3, RNODE_IN(node)->nd_head, RNODE_IN(node)->nd_body, RNODE_IN(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),
-                           RBOOL(node->nd_state));
+        return rb_ary_push(rb_ary_new_from_node_args(ast_value, 2, RNODE_WHILE(node)->nd_cond, RNODE_WHILE(node)->nd_body),
+                           RBOOL(RNODE_WHILE(node)->nd_state));
       case NODE_ITER:
       case NODE_FOR:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_iter, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_ITER(node)->nd_iter, RNODE_ITER(node)->nd_body);
       case NODE_FOR_MASGN:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_var);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_FOR_MASGN(node)->nd_var);
       case NODE_BREAK:
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_BREAK(node)->nd_stts);
       case NODE_NEXT:
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_NEXT(node)->nd_stts);
       case NODE_RETURN:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_stts);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_RETURN(node)->nd_stts);
       case NODE_REDO:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_RETRY:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_BEGIN:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_BEGIN(node)->nd_body);
       case NODE_RESCUE:
-        return rb_ary_new_from_node_args(ast, 3, node->nd_head, node->nd_resq, node->nd_else);
+        return rb_ary_new_from_node_args(ast_value, 3, RNODE_RESCUE(node)->nd_head, RNODE_RESCUE(node)->nd_resq, RNODE_RESCUE(node)->nd_else);
       case NODE_RESBODY:
-        return rb_ary_new_from_node_args(ast, 3, node->nd_args, node->nd_body, node->nd_head);
+        return rb_ary_new_from_node_args(ast_value, 4, RNODE_RESBODY(node)->nd_args, RNODE_RESBODY(node)->nd_exc_var, RNODE_RESBODY(node)->nd_body, RNODE_RESBODY(node)->nd_next);
       case NODE_ENSURE:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_ensr);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_ENSURE(node)->nd_head, RNODE_ENSURE(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_p(node->nd_2nd, type))
+                rb_ary_push(ary, NEW_CHILD(ast_value, RNODE_AND(node)->nd_1st));
+                if (!RNODE_AND(node)->nd_2nd || !nd_type_p(RNODE_AND(node)->nd_2nd, type))
                     break;
-                node = node->nd_2nd;
+                node = RNODE_AND(node)->nd_2nd;
             }
-            rb_ary_push(ary, NEW_CHILD(ast, node->nd_2nd));
+            rb_ary_push(ary, NEW_CHILD(ast_value, RNODE_AND(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);
+        if (NODE_NAMED_REST_P(RNODE_MASGN(node)->nd_args)) {
+            return rb_ary_new_from_node_args(ast_value, 3, RNODE_MASGN(node)->nd_value, RNODE_MASGN(node)->nd_head, RNODE_MASGN(node)->nd_args);
         }
         else {
-            return rb_ary_new_from_args(3, NEW_CHILD(ast, node->nd_value),
-                                        NEW_CHILD(ast, node->nd_head),
+            return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_MASGN(node)->nd_value),
+                                        NEW_CHILD(ast_value, RNODE_MASGN(node)->nd_head),
                                         no_name_rest());
         }
       case NODE_LASGN:
+        if (NODE_REQUIRED_KEYWORD_P(RNODE_LASGN(node)->nd_value)) {
+            return rb_ary_new_from_args(2, var_name(RNODE_LASGN(node)->nd_vid), ID2SYM(rb_intern("NODE_SPECIAL_REQUIRED_KEYWORD")));
+        }
+        return rb_ary_new_from_args(2, var_name(RNODE_LASGN(node)->nd_vid), NEW_CHILD(ast_value, RNODE_LASGN(node)->nd_value));
       case NODE_DASGN:
+        if (NODE_REQUIRED_KEYWORD_P(RNODE_DASGN(node)->nd_value)) {
+            return rb_ary_new_from_args(2, var_name(RNODE_DASGN(node)->nd_vid), ID2SYM(rb_intern("NODE_SPECIAL_REQUIRED_KEYWORD")));
+        }
+        return rb_ary_new_from_args(2, var_name(RNODE_DASGN(node)->nd_vid), NEW_CHILD(ast_value, RNODE_DASGN(node)->nd_value));
       case NODE_IASGN:
+        return rb_ary_new_from_args(2, var_name(RNODE_IASGN(node)->nd_vid), NEW_CHILD(ast_value, RNODE_IASGN(node)->nd_value));
       case NODE_CVASGN:
+        return rb_ary_new_from_args(2, var_name(RNODE_CVASGN(node)->nd_vid), NEW_CHILD(ast_value, RNODE_CVASGN(node)->nd_value));
       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));
+        return rb_ary_new_from_args(2, var_name(RNODE_GASGN(node)->nd_vid), NEW_CHILD(ast_value, RNODE_GASGN(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));
+        if (RNODE_CDECL(node)->nd_vid) {
+            return rb_ary_new_from_args(2, ID2SYM(RNODE_CDECL(node)->nd_vid), NEW_CHILD(ast_value, RNODE_CDECL(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));
+        return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_CDECL(node)->nd_else), ID2SYM(RNODE_COLON2(RNODE_CDECL(node)->nd_else)->nd_mid), NEW_CHILD(ast_value, RNODE_CDECL(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));
+        return rb_ary_new_from_args(4, NEW_CHILD(ast_value, RNODE_OP_ASGN1(node)->nd_recv),
+                                    ID2SYM(RNODE_OP_ASGN1(node)->nd_mid),
+                                    NEW_CHILD(ast_value, RNODE_OP_ASGN1(node)->nd_index),
+                                    NEW_CHILD(ast_value, RNODE_OP_ASGN1(node)->nd_rvalue));
       case NODE_OP_ASGN2:
-        return rb_ary_new_from_args(5, NEW_CHILD(ast, node->nd_recv),
-                                    RBOOL(node->nd_next->nd_aid),
-                                    ID2SYM(node->nd_next->nd_vid),
-                                    ID2SYM(node->nd_next->nd_mid),
-                                    NEW_CHILD(ast, node->nd_value));
+        return rb_ary_new_from_args(5, NEW_CHILD(ast_value, RNODE_OP_ASGN2(node)->nd_recv),
+                                    RBOOL(RNODE_OP_ASGN2(node)->nd_aid),
+                                    ID2SYM(RNODE_OP_ASGN2(node)->nd_vid),
+                                    ID2SYM(RNODE_OP_ASGN2(node)->nd_mid),
+                                    NEW_CHILD(ast_value, RNODE_OP_ASGN2(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));
+        return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_OP_ASGN_AND(node)->nd_head), ID2SYM(idANDOP),
+                                    NEW_CHILD(ast_value, RNODE_OP_ASGN_AND(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));
+        return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_OP_ASGN_OR(node)->nd_head), ID2SYM(idOROP),
+                                    NEW_CHILD(ast_value, RNODE_OP_ASGN_OR(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));
+        return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_OP_CDECL(node)->nd_head),
+                                    ID2SYM(RNODE_OP_CDECL(node)->nd_aid),
+                                    NEW_CHILD(ast_value, RNODE_OP_CDECL(node)->nd_value));
       case NODE_CALL:
+        return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_CALL(node)->nd_recv),
+                                    ID2SYM(RNODE_CALL(node)->nd_mid),
+                                    NEW_CHILD(ast_value, RNODE_CALL(node)->nd_args));
       case NODE_OPCALL:
+        return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_OPCALL(node)->nd_recv),
+                                    ID2SYM(RNODE_OPCALL(node)->nd_mid),
+                                    NEW_CHILD(ast_value, RNODE_OPCALL(node)->nd_args));
       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));
+        return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_QCALL(node)->nd_recv),
+                                    ID2SYM(RNODE_QCALL(node)->nd_mid),
+                                    NEW_CHILD(ast_value, RNODE_QCALL(node)->nd_args));
       case NODE_FCALL:
-        return rb_ary_new_from_args(2, ID2SYM(node->nd_mid),
-                                    NEW_CHILD(ast, node->nd_args));
+        return rb_ary_new_from_args(2, ID2SYM(RNODE_FCALL(node)->nd_mid),
+                                    NEW_CHILD(ast_value, RNODE_FCALL(node)->nd_args));
       case NODE_VCALL:
-        return rb_ary_new_from_args(1, ID2SYM(node->nd_mid));
+        return rb_ary_new_from_args(1, ID2SYM(RNODE_VCALL(node)->nd_mid));
       case NODE_SUPER:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_args);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_SUPER(node)->nd_args);
       case NODE_ZSUPER:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_LIST:
-      case NODE_VALUES:
-        return dump_array(ast, node);
+        return dump_array(ast_value, RNODE_LIST(node));
       case NODE_ZLIST:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_HASH:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_head);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_HASH(node)->nd_head);
       case NODE_YIELD:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_head);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_YIELD(node)->nd_head);
       case NODE_LVAR:
+        return rb_ary_new_from_args(1, var_name(RNODE_LVAR(node)->nd_vid));
       case NODE_DVAR:
-        return rb_ary_new_from_args(1, var_name(node->nd_vid));
+        return rb_ary_new_from_args(1, var_name(RNODE_DVAR(node)->nd_vid));
       case NODE_IVAR:
+        return rb_ary_new_from_args(1, ID2SYM(RNODE_IVAR(node)->nd_vid));
       case NODE_CONST:
+        return rb_ary_new_from_args(1, ID2SYM(RNODE_CONST(node)->nd_vid));
       case NODE_CVAR:
+        return rb_ary_new_from_args(1, ID2SYM(RNODE_CVAR(node)->nd_vid));
       case NODE_GVAR:
-        return rb_ary_new_from_args(1, ID2SYM(node->nd_vid));
+        return rb_ary_new_from_args(1, ID2SYM(RNODE_GVAR(node)->nd_vid));
       case NODE_NTH_REF:
-        snprintf(name, sizeof(name), "$%ld", node->nd_nth);
+        snprintf(name, sizeof(name), "$%ld", RNODE_NTH_REF(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[1] = (char)RNODE_BACK_REF(node)->nd_nth;
         name[2] = '\0';
         return rb_ary_new_from_args(1, ID2SYM(rb_intern(name)));
+      case NODE_MATCH:
+        return rb_ary_new_from_args(1, rb_node_regx_string_val(node));
       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);
+        if (RNODE_MATCH2(node)->nd_args) {
+            return rb_ary_new_from_node_args(ast_value, 3, RNODE_MATCH2(node)->nd_recv, RNODE_MATCH2(node)->nd_value, RNODE_MATCH2(node)->nd_args);
         }
-        return rb_ary_new_from_node_args(ast, 2, node->nd_recv, node->nd_value);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_MATCH2(node)->nd_recv, RNODE_MATCH2(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:
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_MATCH3(node)->nd_recv, RNODE_MATCH3(node)->nd_value);
       case NODE_STR:
       case NODE_XSTR:
-        return rb_ary_new_from_args(1, node->nd_lit);
+        return rb_ary_new_from_args(1, rb_node_str_string_val(node));
+      case NODE_INTEGER:
+        return rb_ary_new_from_args(1, rb_node_integer_literal_val(node));
+      case NODE_FLOAT:
+        return rb_ary_new_from_args(1, rb_node_float_literal_val(node));
+      case NODE_RATIONAL:
+        return rb_ary_new_from_args(1, rb_node_rational_literal_val(node));
+      case NODE_IMAGINARY:
+        return rb_ary_new_from_args(1, rb_node_imaginary_literal_val(node));
+      case NODE_REGX:
+        return rb_ary_new_from_args(1, rb_node_regx_string_val(node));
       case NODE_ONCE:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_ONCE(node)->nd_body);
       case NODE_DSTR:
       case NODE_DXSTR:
       case NODE_DREGX:
       case NODE_DSYM:
         {
-            NODE *n = node->nd_next;
+            struct RNode_LIST *n = RNODE_DSTR(node)->nd_next;
             VALUE head = Qnil, next = Qnil;
             if (n) {
-                head = NEW_CHILD(ast, n->nd_head);
-                next = NEW_CHILD(ast, n->nd_next);
+                head = NEW_CHILD(ast_value, n->nd_head);
+                next = NEW_CHILD(ast_value, n->nd_next);
             }
-            return rb_ary_new_from_args(3, node->nd_lit, head, next);
+            return rb_ary_new_from_args(3, rb_node_dstr_string_val(node), head, next);
         }
+      case NODE_SYM:
+        return rb_ary_new_from_args(1, rb_node_sym_string_val(node));
       case NODE_EVSTR:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_EVSTR(node)->nd_body);
       case NODE_ARGSCAT:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_ARGSCAT(node)->nd_head, RNODE_ARGSCAT(node)->nd_body);
       case NODE_ARGSPUSH:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_ARGSPUSH(node)->nd_head, RNODE_ARGSPUSH(node)->nd_body);
       case NODE_SPLAT:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_head);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_SPLAT(node)->nd_head);
       case NODE_BLOCK_PASS:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_head, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_BLOCK_PASS(node)->nd_head, RNODE_BLOCK_PASS(node)->nd_body);
       case NODE_DEFN:
-        return rb_ary_new_from_args(2, ID2SYM(node->nd_mid), NEW_CHILD(ast, node->nd_defn));
+        return rb_ary_new_from_args(2, ID2SYM(RNODE_DEFN(node)->nd_mid), NEW_CHILD(ast_value, RNODE_DEFN(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));
+        return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_DEFS(node)->nd_recv), ID2SYM(RNODE_DEFS(node)->nd_mid), NEW_CHILD(ast_value, RNODE_DEFS(node)->nd_defn));
       case NODE_ALIAS:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_1st, node->nd_2nd);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_ALIAS(node)->nd_1st, RNODE_ALIAS(node)->nd_2nd);
       case NODE_VALIAS:
-        return rb_ary_new_from_args(2, ID2SYM(node->nd_alias), ID2SYM(node->nd_orig));
+        return rb_ary_new_from_args(2, ID2SYM(RNODE_VALIAS(node)->nd_alias), ID2SYM(RNODE_VALIAS(node)->nd_orig));
       case NODE_UNDEF:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_undef);
+        return rb_ary_new_from_args(1, dump_parser_array(ast_value, RNODE_UNDEF(node)->nd_undefs));
       case NODE_CLASS:
-        return rb_ary_new_from_node_args(ast, 3, node->nd_cpath, node->nd_super, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 3, RNODE_CLASS(node)->nd_cpath, RNODE_CLASS(node)->nd_super, RNODE_CLASS(node)->nd_body);
       case NODE_MODULE:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_cpath, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_MODULE(node)->nd_cpath, RNODE_MODULE(node)->nd_body);
       case NODE_SCLASS:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_recv, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_SCLASS(node)->nd_recv, RNODE_SCLASS(node)->nd_body);
       case NODE_COLON2:
-        return rb_ary_new_from_args(2, NEW_CHILD(ast, node->nd_head), ID2SYM(node->nd_mid));
+        return rb_ary_new_from_args(2, NEW_CHILD(ast_value, RNODE_COLON2(node)->nd_head), ID2SYM(RNODE_COLON2(node)->nd_mid));
       case NODE_COLON3:
-        return rb_ary_new_from_args(1, ID2SYM(node->nd_mid));
+        return rb_ary_new_from_args(1, ID2SYM(RNODE_COLON3(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);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_DOT2(node)->nd_beg, RNODE_DOT2(node)->nd_end);
       case NODE_SELF:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_NIL:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_TRUE:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_FALSE:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_ERRINFO:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_DEFINED:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_head);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_DEFINED(node)->nd_head);
       case NODE_POSTEXE:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_POSTEXE(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));
+        return rb_ary_new_from_args(3, NEW_CHILD(ast_value, RNODE_ATTRASGN(node)->nd_recv), ID2SYM(RNODE_ATTRASGN(node)->nd_mid), NEW_CHILD(ast_value, RNODE_ATTRASGN(node)->nd_args));
       case NODE_LAMBDA:
-        return rb_ary_new_from_node_args(ast, 1, node->nd_body);
+        return rb_ary_new_from_node_args(ast_value, 1, RNODE_LAMBDA(node)->nd_body);
       case NODE_OPT_ARG:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_body, node->nd_next);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_OPT_ARG(node)->nd_body, RNODE_OPT_ARG(node)->nd_next);
       case NODE_KW_ARG:
-        return rb_ary_new_from_node_args(ast, 2, node->nd_body, node->nd_next);
+        return rb_ary_new_from_node_args(ast_value, 2, RNODE_KW_ARG(node)->nd_body, RNODE_KW_ARG(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);
+        if (NODE_NAMED_REST_P(RNODE_POSTARG(node)->nd_1st)) {
+            return rb_ary_new_from_node_args(ast_value, 2, RNODE_POSTARG(node)->nd_1st, RNODE_POSTARG(node)->nd_2nd);
         }
         return rb_ary_new_from_args(2, no_name_rest(),
-                                    NEW_CHILD(ast, node->nd_2nd));
+                                    NEW_CHILD(ast_value, RNODE_POSTARG(node)->nd_2nd));
       case NODE_ARGS:
         {
-            struct rb_args_info *ainfo = node->nd_ainfo;
+            struct rb_args_info *ainfo = &RNODE_ARGS(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),
+                                        NEW_CHILD(ast_value, ainfo->pre_init),
+                                        NEW_CHILD(ast_value, (NODE *)ainfo->opt_args),
                                         var_name(ainfo->first_post_arg),
                                         INT2NUM(ainfo->post_args_num),
-                                        NEW_CHILD(ast, ainfo->post_init),
+                                        NEW_CHILD(ast_value, 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)),
+                                        (ainfo->no_kwarg ? Qfalse : NEW_CHILD(ast_value, (NODE *)ainfo->kw_args)),
+                                        (ainfo->no_kwarg ? Qfalse : NEW_CHILD(ast_value, ainfo->kw_rest_arg)),
                                         var_name(ainfo->block_arg));
         }
       case NODE_SCOPE:
         {
-            rb_ast_id_table_t *tbl = node->nd_tbl;
+            rb_ast_id_table_t *tbl = RNODE_SCOPE(node)->nd_tbl;
             int i, size = tbl ? tbl->size : 0;
             VALUE locals = rb_ary_new_capa(size);
             for (i = 0; i < size; i++) {
                 rb_ary_push(locals, var_name(tbl->ids[i]));
             }
-            return rb_ary_new_from_args(3, locals, NEW_CHILD(ast, node->nd_args), NEW_CHILD(ast, node->nd_body));
+            return rb_ary_new_from_args(3, locals, NEW_CHILD(ast_value, (NODE *)RNODE_SCOPE(node)->nd_args), NEW_CHILD(ast_value, RNODE_SCOPE(node)->nd_body));
         }
       case NODE_ARYPTN:
         {
-            struct rb_ary_pattern_info *apinfo = node->nd_apinfo;
-            VALUE rest = rest_arg(ast, apinfo->rest_arg);
+            VALUE rest = rest_arg(ast_value, RNODE_ARYPTN(node)->rest_arg);
             return rb_ary_new_from_args(4,
-                                        NEW_CHILD(ast, node->nd_pconst),
-                                        NEW_CHILD(ast, apinfo->pre_args),
+                                        NEW_CHILD(ast_value, RNODE_ARYPTN(node)->nd_pconst),
+                                        NEW_CHILD(ast_value, RNODE_ARYPTN(node)->pre_args),
                                         rest,
-                                        NEW_CHILD(ast, apinfo->post_args));
+                                        NEW_CHILD(ast_value, RNODE_ARYPTN(node)->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);
+            VALUE pre_rest = rest_arg(ast_value, RNODE_FNDPTN(node)->pre_rest_arg);
+            VALUE post_rest = rest_arg(ast_value, RNODE_FNDPTN(node)->post_rest_arg);
             return rb_ary_new_from_args(4,
-                                        NEW_CHILD(ast, node->nd_pconst),
+                                        NEW_CHILD(ast_value, RNODE_FNDPTN(node)->nd_pconst),
                                         pre_rest,
-                                        NEW_CHILD(ast, fpinfo->args),
+                                        NEW_CHILD(ast_value, RNODE_FNDPTN(node)->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);
+            VALUE kwrest = RNODE_HSHPTN(node)->nd_pkwrestarg == NODE_SPECIAL_NO_REST_KEYWORD ? ID2SYM(rb_intern("NODE_SPECIAL_NO_REST_KEYWORD")) :
+                                                                                 NEW_CHILD(ast_value, RNODE_HSHPTN(node)->nd_pkwrestarg);
 
             return rb_ary_new_from_args(3,
-                                        NEW_CHILD(ast, node->nd_pconst),
-                                        NEW_CHILD(ast, node->nd_pkwargs),
+                                        NEW_CHILD(ast_value, RNODE_HSHPTN(node)->nd_pconst),
+                                        NEW_CHILD(ast_value, RNODE_HSHPTN(node)->nd_pkwargs),
                                         kwrest);
         }
+      case NODE_LINE:
+        return rb_ary_new_from_args(1, rb_node_line_lineno_val(node));
+      case NODE_FILE:
+        return rb_ary_new_from_args(1, rb_node_file_path_val(node));
+      case NODE_ENCODING:
+        return rb_ary_new_from_args(1, rb_node_encoding_val(node));
       case NODE_ERROR:
-        return rb_ary_new_from_node_args(ast, 0);
+        return rb_ary_new_from_node_args(ast_value, 0);
       case NODE_ARGS_AUX:
       case NODE_LAST:
         break;
@@ -676,7 +748,250 @@ 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);
+    return node_children(data->ast_value, data->node);
+}
+
+static int
+null_loc_p(rb_code_location_t *loc)
+{
+    return (loc->beg_pos.lineno == 0 && loc->beg_pos.column == -1 && loc->end_pos.lineno == 0 && loc->end_pos.column == -1);
+}
+
+static VALUE
+location_new(rb_code_location_t *loc)
+{
+    VALUE obj;
+    struct ASTLocationData *data;
+
+    if (null_loc_p(loc)) return Qnil;
+
+    obj = TypedData_Make_Struct(rb_cLocation, struct ASTLocationData, &rb_location_type, data);
+    data->first_lineno = loc->beg_pos.lineno;
+    data->first_column = loc->beg_pos.column;
+    data->last_lineno = loc->end_pos.lineno;
+    data->last_column = loc->end_pos.column;
+
+    return obj;
+}
+
+static VALUE
+node_locations(VALUE ast_value, const NODE *node)
+{
+    enum node_type type = nd_type(node);
+    switch (type) {
+      case NODE_ALIAS:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_ALIAS(node)->keyword_loc));
+      case NODE_AND:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_AND(node)->operator_loc));
+      case NODE_BLOCK_PASS:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_BLOCK_PASS(node)->operator_loc));
+      case NODE_BREAK:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_BREAK(node)->keyword_loc));
+      case NODE_CASE:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_CASE(node)->case_keyword_loc),
+                                    location_new(&RNODE_CASE(node)->end_keyword_loc));
+      case NODE_CASE2:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_CASE2(node)->case_keyword_loc),
+                                    location_new(&RNODE_CASE2(node)->end_keyword_loc));
+      case NODE_CASE3:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_CASE3(node)->case_keyword_loc),
+                                    location_new(&RNODE_CASE3(node)->end_keyword_loc));
+      case NODE_CLASS:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_CLASS(node)->class_keyword_loc),
+                                    location_new(&RNODE_CLASS(node)->inheritance_operator_loc),
+                                    location_new(&RNODE_CLASS(node)->end_keyword_loc));
+      case NODE_COLON2:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_COLON2(node)->delimiter_loc),
+                                    location_new(&RNODE_COLON2(node)->name_loc));
+      case NODE_COLON3:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_COLON3(node)->delimiter_loc),
+                                    location_new(&RNODE_COLON3(node)->name_loc));
+      case NODE_DEFINED:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_DEFINED(node)->keyword_loc));
+      case NODE_DOT2:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_DOT2(node)->operator_loc));
+      case NODE_DOT3:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_DOT3(node)->operator_loc));
+      case NODE_EVSTR:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_EVSTR(node)->opening_loc),
+                                    location_new(&RNODE_EVSTR(node)->closing_loc));
+      case NODE_FLIP2:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_FLIP2(node)->operator_loc));
+      case NODE_FLIP3:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_FLIP3(node)->operator_loc));
+      case NODE_FOR:
+        return rb_ary_new_from_args(5,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_FOR(node)->for_keyword_loc),
+                                    location_new(&RNODE_FOR(node)->in_keyword_loc),
+                                    location_new(&RNODE_FOR(node)->do_keyword_loc),
+                                    location_new(&RNODE_FOR(node)->end_keyword_loc));
+      case NODE_LAMBDA:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_LAMBDA(node)->operator_loc),
+                                    location_new(&RNODE_LAMBDA(node)->opening_loc),
+                                    location_new(&RNODE_LAMBDA(node)->closing_loc));
+      case NODE_IF:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_IF(node)->if_keyword_loc),
+                                    location_new(&RNODE_IF(node)->then_keyword_loc),
+                                    location_new(&RNODE_IF(node)->end_keyword_loc));
+      case NODE_IN:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_IN(node)->in_keyword_loc),
+                                    location_new(&RNODE_IN(node)->then_keyword_loc),
+                                    location_new(&RNODE_IN(node)->operator_loc));
+      case NODE_MODULE:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_MODULE(node)->module_keyword_loc),
+                                    location_new(&RNODE_MODULE(node)->end_keyword_loc));
+      case NODE_NEXT:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_NEXT(node)->keyword_loc));
+      case NODE_OR:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_OR(node)->operator_loc));
+      case NODE_OP_ASGN1:
+        return rb_ary_new_from_args(5,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_OP_ASGN1(node)->call_operator_loc),
+                                    location_new(&RNODE_OP_ASGN1(node)->opening_loc),
+                                    location_new(&RNODE_OP_ASGN1(node)->closing_loc),
+                                    location_new(&RNODE_OP_ASGN1(node)->binary_operator_loc));
+      case NODE_OP_ASGN2:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_OP_ASGN2(node)->call_operator_loc),
+                                    location_new(&RNODE_OP_ASGN2(node)->message_loc),
+                                    location_new(&RNODE_OP_ASGN2(node)->binary_operator_loc));
+      case NODE_POSTEXE:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_POSTEXE(node)->keyword_loc),
+                                    location_new(&RNODE_POSTEXE(node)->opening_loc),
+                                    location_new(&RNODE_POSTEXE(node)->closing_loc));
+      case NODE_REDO:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_REDO(node)->keyword_loc));
+      case NODE_REGX:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_REGX(node)->opening_loc),
+                                    location_new(&RNODE_REGX(node)->content_loc),
+                                    location_new(&RNODE_REGX(node)->closing_loc));
+      case NODE_RETURN:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_RETURN(node)->keyword_loc));
+
+      case NODE_SCLASS:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_SCLASS(node)->class_keyword_loc),
+                                    location_new(&RNODE_SCLASS(node)->operator_loc),
+                                    location_new(&RNODE_SCLASS(node)->end_keyword_loc));
+
+      case NODE_SPLAT:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_SPLAT(node)->operator_loc));
+      case NODE_SUPER:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_SUPER(node)->keyword_loc),
+                                    location_new(&RNODE_SUPER(node)->lparen_loc),
+                                    location_new(&RNODE_SUPER(node)->rparen_loc));
+      case NODE_UNDEF:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_UNDEF(node)->keyword_loc));
+      case NODE_UNLESS:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_UNLESS(node)->keyword_loc),
+                                    location_new(&RNODE_UNLESS(node)->then_keyword_loc),
+                                    location_new(&RNODE_UNLESS(node)->end_keyword_loc));
+      case NODE_VALIAS:
+        return rb_ary_new_from_args(2,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_VALIAS(node)->keyword_loc));
+      case NODE_WHEN:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_WHEN(node)->keyword_loc),
+                                    location_new(&RNODE_WHEN(node)->then_keyword_loc));
+      case NODE_WHILE:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_WHILE(node)->keyword_loc),
+                                    location_new(&RNODE_WHILE(node)->closing_loc));
+      case NODE_UNTIL:
+        return rb_ary_new_from_args(3,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_UNTIL(node)->keyword_loc),
+                                    location_new(&RNODE_UNTIL(node)->closing_loc));
+      case NODE_YIELD:
+        return rb_ary_new_from_args(4,
+                                    location_new(nd_code_loc(node)),
+                                    location_new(&RNODE_YIELD(node)->keyword_loc),
+                                    location_new(&RNODE_YIELD(node)->lparen_loc),
+                                    location_new(&RNODE_YIELD(node)->rparen_loc));
+      case NODE_ARGS_AUX:
+      case NODE_LAST:
+        break;
+      default:
+        return rb_ary_new_from_args(1, location_new(nd_code_loc(node)));
+    }
+
+    rb_bug("node_locations: unknown node: %s", ruby_node_name(type));
+}
+
+static VALUE
+ast_node_locations(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTNodeData *data;
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+
+    return node_locations(data->ast_value, data->node);
 }
 
 static VALUE
@@ -716,6 +1031,42 @@ ast_node_last_column(rb_execution_context_t *ec, VALUE self)
 }
 
 static VALUE
+ast_node_all_tokens(rb_execution_context_t *ec, VALUE self)
+{
+    long i;
+    struct ASTNodeData *data;
+    rb_ast_t *ast;
+    rb_parser_ary_t *parser_tokens;
+    rb_parser_ast_token_t *parser_token;
+    VALUE str, loc, token, all_tokens;
+
+    TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
+    ast = rb_ruby_ast_data_get(data->ast_value);
+
+    parser_tokens = ast->node_buffer->tokens;
+    if (parser_tokens == NULL) {
+        return Qnil;
+    }
+
+    all_tokens = rb_ary_new2(parser_tokens->len);
+    for (i = 0; i < parser_tokens->len; i++) {
+        parser_token = parser_tokens->data[i];
+        str = rb_str_new(parser_token->str->ptr, parser_token->str->len);
+        loc = rb_ary_new_from_args(4,
+            INT2FIX(parser_token->loc.beg_pos.lineno),
+            INT2FIX(parser_token->loc.beg_pos.column),
+            INT2FIX(parser_token->loc.end_pos.lineno),
+            INT2FIX(parser_token->loc.end_pos.column)
+        );
+        token = rb_ary_new_from_args(4, INT2FIX(parser_token->id), ID2SYM(rb_intern(parser_token->type_name)), str, loc);
+        rb_ary_push(all_tokens, token);
+    }
+    rb_ary_freeze(all_tokens);
+
+    return all_tokens;
+}
+
+static VALUE
 ast_node_inspect(rb_execution_context_t *ec, VALUE self)
 {
     VALUE str;
@@ -739,10 +1090,66 @@ static VALUE
 ast_node_script_lines(rb_execution_context_t *ec, VALUE self)
 {
     struct ASTNodeData *data;
+    rb_ast_t *ast;
     TypedData_Get_Struct(self, struct ASTNodeData, &rb_node_type, data);
-    VALUE ret = data->ast->body.script_lines;
-    if (!RB_TYPE_P(ret, T_ARRAY)) return Qnil;
-    return ret;
+    ast = rb_ruby_ast_data_get(data->ast_value);
+    rb_parser_ary_t *ret = ast->body.script_lines;
+    return rb_parser_build_script_lines_from(ret);
+}
+
+static VALUE
+ast_location_first_lineno(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTLocationData *data;
+    TypedData_Get_Struct(self, struct ASTLocationData, &rb_location_type, data);
+
+    return INT2NUM(data->first_lineno);
+}
+
+static VALUE
+ast_location_first_column(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTLocationData *data;
+    TypedData_Get_Struct(self, struct ASTLocationData, &rb_location_type, data);
+
+    return INT2NUM(data->first_column);
+}
+
+static VALUE
+ast_location_last_lineno(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTLocationData *data;
+    TypedData_Get_Struct(self, struct ASTLocationData, &rb_location_type, data);
+
+    return INT2NUM(data->last_lineno);
+}
+
+static VALUE
+ast_location_last_column(rb_execution_context_t *ec, VALUE self)
+{
+    struct ASTLocationData *data;
+    TypedData_Get_Struct(self, struct ASTLocationData, &rb_location_type, data);
+
+    return INT2NUM(data->last_column);
+}
+
+static VALUE
+ast_location_inspect(rb_execution_context_t *ec, VALUE self)
+{
+    VALUE str;
+    VALUE cname;
+    struct ASTLocationData *data;
+    TypedData_Get_Struct(self, struct ASTLocationData, &rb_location_type, data);
+
+    cname = rb_class_path(rb_obj_class(self));
+    str = rb_str_new2("#<");
+
+    rb_str_append(str, cname);
+    rb_str_catf(str, ":@%d:%d-%d:%d>",
+                data->first_lineno, data->first_column,
+                data->last_lineno, data->last_column);
+
+    return str;
 }
 
 #include "ast.rbinc"
@@ -752,5 +1159,7 @@ Init_ast(void)
 {
     rb_mAST = rb_define_module_under(rb_cRubyVM, "AbstractSyntaxTree");
     rb_cNode = rb_define_class_under(rb_mAST, "Node", rb_cObject);
+    rb_cLocation = rb_define_class_under(rb_mAST, "Location", rb_cObject);
     rb_undef_alloc_func(rb_cNode);
+    rb_undef_alloc_func(rb_cLocation);
 }
diff --git a/ast.rb b/ast.rb
index 1bc1168b80..6380621780 100644
--- a/ast.rb
+++ b/ast.rb
@@ -13,28 +13,53 @@
 # 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.
+# implementations, consider using the _prism_ gem, which is the official
+# Ruby API to parse Ruby code.
 #
 module RubyVM::AbstractSyntaxTree
 
   #  call-seq:
-  #     RubyVM::AbstractSyntaxTree.parse(string) -> RubyVM::AbstractSyntaxTree::Node
+  #     RubyVM::AbstractSyntaxTree.parse(string, keep_script_lines: RubyVM.keep_script_lines, error_tolerant: false, keep_tokens: false) -> 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, keep_script_lines: false, error_tolerant: false
-    Primitive.ast_s_parse string, keep_script_lines, error_tolerant
+  #
+  #  If <tt>keep_script_lines: true</tt> option is provided, the text of the parsed
+  #  source is associated with nodes and is available via Node#script_lines.
+  #
+  #  If <tt>keep_tokens: true</tt> option is provided, Node#tokens are populated.
+  #
+  #  SyntaxError is raised if the given _string_ is invalid syntax. To overwrite this
+  #  behavior, <tt>error_tolerant: true</tt> can be provided. In this case, the parser
+  #  will produce a tree where expressions with syntax errors would be represented by
+  #  Node with <tt>type=:ERROR</tt>.
+  #
+  #     root = RubyVM::AbstractSyntaxTree.parse("x = 1; p(x; y=2")
+  #     # <internal:ast>:33:in `parse': syntax error, unexpected ';', expecting ')' (SyntaxError)
+  #     # x = 1; p(x; y=2
+  #     #           ^
+  #
+  #     root = RubyVM::AbstractSyntaxTree.parse("x = 1; p(x; y=2", error_tolerant: true)
+  #     # (SCOPE@1:0-1:15
+  #     #  tbl: [:x, :y]
+  #     #  args: nil
+  #     #  body: (BLOCK@1:0-1:15 (LASGN@1:0-1:5 :x (LIT@1:4-1:5 1)) (ERROR@1:7-1:11) (LASGN@1:12-1:15 :y (LIT@1:14-1:15 2))))
+  #     root.children.last.children
+  #     # [(LASGN@1:0-1:5 :x (LIT@1:4-1:5 1)),
+  #     #  (ERROR@1:7-1:11),
+  #     #  (LASGN@1:12-1:15 :y (LIT@1:14-1:15 2))]
+  #
+  #  Note that parsing continues even after the errored expression.
+  #
+  def self.parse string, keep_script_lines: RubyVM.keep_script_lines, error_tolerant: false, keep_tokens: false
+    Primitive.ast_s_parse string, keep_script_lines, error_tolerant, keep_tokens
   end
 
   #  call-seq:
-  #     RubyVM::AbstractSyntaxTree.parse_file(pathname) -> RubyVM::AbstractSyntaxTree::Node
+  #     RubyVM::AbstractSyntaxTree.parse_file(pathname, keep_script_lines: RubyVM.keep_script_lines, error_tolerant: false, keep_tokens: false) -> RubyVM::AbstractSyntaxTree::Node
   #
   #   Reads the file from _pathname_, then parses it like ::parse,
   #   returning the root node of the abstract syntax tree.
@@ -44,13 +69,15 @@ module RubyVM::AbstractSyntaxTree
   #
   #     RubyVM::AbstractSyntaxTree.parse_file("my-app/app.rb")
   #     # => #<RubyVM::AbstractSyntaxTree::Node:SCOPE@1:0-31:3>
-  def self.parse_file pathname, keep_script_lines: false, error_tolerant: false
-    Primitive.ast_s_parse_file pathname, keep_script_lines, error_tolerant
+  #
+  #   See ::parse for explanation of keyword argument meaning and usage.
+  def self.parse_file pathname, keep_script_lines: RubyVM.keep_script_lines, error_tolerant: false, keep_tokens: false
+    Primitive.ast_s_parse_file pathname, keep_script_lines, error_tolerant, keep_tokens
   end
 
   #  call-seq:
-  #     RubyVM::AbstractSyntaxTree.of(proc)   -> RubyVM::AbstractSyntaxTree::Node
-  #     RubyVM::AbstractSyntaxTree.of(method) -> RubyVM::AbstractSyntaxTree::Node
+  #     RubyVM::AbstractSyntaxTree.of(proc, keep_script_lines: RubyVM.keep_script_lines, error_tolerant: false, keep_tokens: false)   -> RubyVM::AbstractSyntaxTree::Node
+  #     RubyVM::AbstractSyntaxTree.of(method, keep_script_lines: RubyVM.keep_script_lines, error_tolerant: false, keep_tokens: false) -> RubyVM::AbstractSyntaxTree::Node
   #
   #   Returns AST nodes of the given _proc_ or _method_.
   #
@@ -63,8 +90,10 @@ module RubyVM::AbstractSyntaxTree
   #
   #     RubyVM::AbstractSyntaxTree.of(method(:hello))
   #     # => #<RubyVM::AbstractSyntaxTree::Node:SCOPE@1:0-3:3>
-  def self.of body, keep_script_lines: false, error_tolerant: false
-    Primitive.ast_s_of body, keep_script_lines, error_tolerant
+  #
+  #   See ::parse for explanation of keyword argument meaning and usage.
+  def self.of body, keep_script_lines: RubyVM.keep_script_lines, error_tolerant: false, keep_tokens: false
+    Primitive.ast_s_of body, keep_script_lines, error_tolerant, keep_tokens
   end
 
   #  call-seq:
@@ -137,6 +166,47 @@ module RubyVM::AbstractSyntaxTree
     end
 
     #  call-seq:
+    #     node.tokens -> array
+    #
+    #  Returns tokens corresponding to the location of the node.
+    #  Returns +nil+ if +keep_tokens+ is not enabled when #parse method is called.
+    #
+    #    root = RubyVM::AbstractSyntaxTree.parse("x = 1 + 2", keep_tokens: true)
+    #    root.tokens # => [[0, :tIDENTIFIER, "x", [1, 0, 1, 1]], [1, :tSP, " ", [1, 1, 1, 2]], ...]
+    #    root.tokens.map{_1[2]}.join # => "x = 1 + 2"
+    #
+    #  Token is an array of:
+    #
+    #  - id
+    #  - token type
+    #  - source code text
+    #  - location [ first_lineno, first_column, last_lineno, last_column ]
+    def tokens
+      return nil unless all_tokens
+
+      all_tokens.each_with_object([]) do |token, a|
+        loc = token.last
+        if ([first_lineno, first_column] <=> [loc[0], loc[1]]) <= 0 &&
+           ([last_lineno, last_column]   <=> [loc[2], loc[3]]) >= 0
+           a << token
+        end
+      end
+    end
+
+    #  call-seq:
+    #     node.all_tokens -> array
+    #
+    #  Returns all tokens for the input script regardless the receiver node.
+    #  Returns +nil+ if +keep_tokens+ is not enabled when #parse method is called.
+    #
+    #    root = RubyVM::AbstractSyntaxTree.parse("x = 1 + 2", keep_tokens: true)
+    #    root.all_tokens # => [[0, :tIDENTIFIER, "x", [1, 0, 1, 1]], [1, :tSP, " ", [1, 1, 1, 2]], ...]
+    #    root.children[-1].all_tokens # => [[0, :tIDENTIFIER, "x", [1, 0, 1, 1]], [1, :tSP, " ", [1, 1, 1, 2]], ...]
+    def all_tokens
+      Primitive.ast_node_all_tokens
+    end
+
+    #  call-seq:
     #     node.children -> array
     #
     #  Returns AST nodes under this one.  Each kind of node
@@ -194,12 +264,69 @@ module RubyVM::AbstractSyntaxTree
       lines = script_lines
       if lines
         lines = lines[first_lineno - 1 .. last_lineno - 1]
-        lines[-1] = lines[-1][0...last_column]
-        lines[0] = lines[0][first_column..-1]
+        lines[-1] = lines[-1].byteslice(0...last_column)
+        lines[0] = lines[0].byteslice(first_column..-1)
         lines.join
       else
         nil
       end
     end
+
+    #  call-seq:
+    #     node.locations -> array
+    #
+    #  Returns location objects associated with the AST node.
+    #  The returned array contains RubyVM::AbstractSyntaxTree::Location.
+    def locations
+      Primitive.ast_node_locations
+    end
+  end
+
+  # RubyVM::AbstractSyntaxTree::Location instances are created by
+  # RubyVM::AbstractSyntaxTree::Node#locations.
+  #
+  # This class is MRI specific.
+  #
+  class Location
+
+    #  call-seq:
+    #     location.first_lineno -> integer
+    #
+    #  The line number in the source code where this AST's text began.
+    def first_lineno
+      Primitive.ast_location_first_lineno
+    end
+
+    #  call-seq:
+    #     location.first_column -> integer
+    #
+    #  The column number in the source code where this AST's text began.
+    def first_column
+      Primitive.ast_location_first_column
+    end
+
+    #  call-seq:
+    #     location.last_lineno -> integer
+    #
+    #  The line number in the source code where this AST's text ended.
+    def last_lineno
+      Primitive.ast_location_last_lineno
+    end
+
+    #  call-seq:
+    #     location.last_column -> integer
+    #
+    #  The column number in the source code where this AST's text ended.
+    def last_column
+      Primitive.ast_location_last_column
+    end
+
+    #  call-seq:
+    #     location.inspect -> string
+    #
+    #  Returns debugging information about this location as a string.
+    def inspect
+      Primitive.ast_location_inspect
+    end
   end
 end
diff --git a/autogen.sh b/autogen.sh
index f8cdf3c0c1..6cbc5dddab 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,17 +1,22 @@
 #!/bin/sh
 
+# Clear PWD to force commands to recompute working directory
 PWD=
+
+# Figure out the source directory for this script
+# configure.ac should be in the same place
 case "$0" in
-*/*) srcdir=`dirname $0`;;
-*) srcdir="";;
+    */* )  srcdir=`dirname "$0"` ;; # Called with path
+    *   )  srcdir="";; # Otherwise
 esac
 
-symlink='--install --symlink'
+# If install-only is explicitly requested, disable symlink flags
 case " $* " in
-    *" -i "*|*" --install "*)
-        # reset to copy missing standard auxiliary files, instead of symlinks
-        symlink=
-        ;;
+    *" -i "* | *" --install"* ) symlink_flags="" ;;
+    *                         ) symlink_flags="--install --symlink" ;;
 esac
 
-exec ${AUTORECONF:-autoreconf} ${symlink} "$@" ${srcdir:+"$srcdir"}
+exec ${AUTORECONF:-autoreconf} \
+     $symlink_flags \
+     "$@" \
+     $srcdir
diff --git a/basictest/test.rb b/basictest/test.rb
index 95875b52a6..711e4f4ab3 100755
--- a/basictest/test.rb
+++ b/basictest/test.rb
@@ -879,7 +879,7 @@ $x.sort!{|a,b| b-a}		# reverse sort
 test_ok($x == [7,5,3,2,1])
 
 # split test
-$x = "The Book of Mormon"
+$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")
@@ -1643,7 +1643,7 @@ test_ok(/^(?:ab+)+/ =~ "ababb" && $& == "ababb")
 test_ok(/(\s+\d+){2}/ =~ " 1 2" && $& == " 1 2")
 test_ok(/(?:\s+\d+){2}/ =~ " 1 2" && $& == " 1 2")
 
-$x = <<END;
+$x = +<<END;
 ABCD
 ABCD
 END
@@ -1682,12 +1682,12 @@ 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")
+test_ok("a".dup.upcase![0] == ?A)
+test_ok("A".dup.downcase![0] == ?a)
+test_ok("abc".dup.tr!("a-z", "A-Z") == "ABC")
+test_ok("aabbcccc".dup.tr_s!("a-z", "A-Z") == "ABC")
+test_ok("abcc".dup.squeeze!("a-z") == "abc")
+test_ok("abcd".dup.delete!("bc") == "ad")
 
 $x = "abcdef"
 $y = [ ?a, ?b, ?c, ?d, ?e, ?f ]
@@ -1700,7 +1700,7 @@ $x.each_byte {|i|
 }
 test_ok(!$bad)
 
-s = "a string"
+s = +"a string"
 s[0..s.size]="another string"
 test_ok(s == "another string")
 
diff --git a/benchmark/README.md b/benchmark/README.md
index e11381cad9..9f9192685e 100644
--- a/benchmark/README.md
+++ b/benchmark/README.md
@@ -27,6 +27,7 @@ benchmark-driver benchmark/*.yml
 See also:
 
 ```console
+benchmark-driver --help
 Usage: benchmark-driver [options] RUBY|YAML...
     -r, --runner TYPE                Specify runner type: ips, time, memory, once, block (default: ips)
     -o, --output TYPE                Specify output type: compare, simple, markdown, record, all (default: compare)
@@ -39,7 +40,7 @@ Usage: benchmark-driver [options] RUBY|YAML...
         --filter REGEXP              Filter out benchmarks with given regexp
         --run-duration SECONDS       Warmup estimates loop_count to run for this duration (default: 3)
         --timeout SECONDS            Timeout ruby command execution with timeout(1)
-    -v, --verbose                    Verbose mode. Multiple -v options increase visilibity (max: 2)
+    -v, --verbose                    Verbose mode. Multiple -v options increase visibility (max: 2)
 ```
 
 ## make benchmark
diff --git a/benchmark/app_aobench.rb b/benchmark/app_aobench.rb
index 16296af12b..c1546e08ab 100644
--- a/benchmark/app_aobench.rb
+++ b/benchmark/app_aobench.rb
@@ -151,7 +151,7 @@ def clamp(f)
   i.to_i
 end
 
-def otherBasis(basis, n)
+def orthoBasis(basis, n)
   basis[2] = Vec.new(n.x, n.y, n.z)
   basis[1] = Vec.new(0.0, 0.0, 0.0)
 
@@ -183,7 +183,7 @@ class Scene
 
   def ambient_occlusion(isect)
     basis = Array.new
-    otherBasis(basis, isect.n)
+    orthoBasis(basis, isect.n)
 
     ntheta    = NAO_SAMPLES
     nphi      = NAO_SAMPLES
diff --git a/benchmark/app_fib.rb b/benchmark/app_fib.rb
index 34a7b2e725..e61bc8aa32 100644
--- a/benchmark/app_fib.rb
+++ b/benchmark/app_fib.rb
@@ -1,4 +1,4 @@
-def fib n
+def fib(n)
   if n < 3
     1
   else
diff --git a/benchmark/array_large_literal.yml b/benchmark/array_large_literal.yml
new file mode 100644
index 0000000000..423d68391f
--- /dev/null
+++ b/benchmark/array_large_literal.yml
@@ -0,0 +1,19 @@
+prelude: |
+  def def_array(size)
+    Object.class_eval(<<-END)
+      def array_#{size}
+        x = 1
+        [#{(['x'] * size).join(',')}]
+      end
+    END
+  end
+  def_array(100)
+  def_array(1000)
+  def_array(10000)
+  def_array(100000)
+benchmark:
+  array_100: array_100
+  array_1000: array_1000
+  array_10000: array_10000
+  array_100000: array_100000
+
diff --git a/benchmark/array_sort_int.yml b/benchmark/array_sort_int.yml
new file mode 100644
index 0000000000..7b9027ebf7
--- /dev/null
+++ b/benchmark/array_sort_int.yml
@@ -0,0 +1,15 @@
+prelude: |
+  ary2 = 2.times.to_a.shuffle
+  ary10 = 10.times.to_a.shuffle
+  ary100 = 100.times.to_a.shuffle
+  ary1000 = 1000.times.to_a.shuffle
+  ary10000 = 10000.times.to_a.shuffle
+
+benchmark:
+  ary2.sort: ary2.sort
+  ary10.sort: ary10.sort
+  ary100.sort: ary100.sort
+  ary1000.sort: ary1000.sort
+  ary10000.sort: ary10000.sort
+
+loop_count: 10000
diff --git a/benchmark/class_superclass.yml b/benchmark/class_superclass.yml
new file mode 100644
index 0000000000..847ff811f1
--- /dev/null
+++ b/benchmark/class_superclass.yml
@@ -0,0 +1,23 @@
+prelude: |
+  class SimpleClass; end
+  class OneModuleClass
+    1.times { include Module.new }
+  end
+  class MediumClass
+    10.times { include Module.new }
+  end
+  class LargeClass
+    100.times { include Module.new }
+  end
+benchmark:
+  object_class_superclass: |
+    Object.superclass
+  simple_class_superclass: |
+    SimpleClass.superclass
+  one_module_class: |
+    OneModuleClass.superclass
+  medium_class_superclass: |
+    MediumClass.superclass
+  large_class_superclass: |
+    LargeClass.superclass
+loop_count: 20000000
diff --git a/benchmark/enum_minmax.yml b/benchmark/enum_minmax.yml
new file mode 100644
index 0000000000..9d01731abb
--- /dev/null
+++ b/benchmark/enum_minmax.yml
@@ -0,0 +1,25 @@
+prelude: |
+  set2 = 2.times.to_a.shuffle.to_set
+  set10 = 10.times.to_a.shuffle.to_set
+  set100 = 100.times.to_a.shuffle.to_set
+  set1000 = 1000.times.to_a.shuffle.to_set
+  set10000 = 10000.times.to_a.shuffle.to_set
+
+benchmark:
+  set2.min: set2.min
+  set10.min: set10.min
+  set100.min: set100.min
+  set1000.min: set1000.min
+  set10000.min: set10000.min
+  set2.max: set2.max
+  set10.max: set10.max
+  set100.max: set100.max
+  set1000.max: set1000.max
+  set10000.max: set10000.max
+  set2.minmax: set2.minmax
+  set10.minmax: set10.minmax
+  set100.minmax: set100.minmax
+  set1000.minmax: set1000.minmax
+  set10000.minmax: set10000.minmax
+
+loop_count: 10000
diff --git a/benchmark/enum_sort.yml b/benchmark/enum_sort.yml
new file mode 100644
index 0000000000..6f26e748c6
--- /dev/null
+++ b/benchmark/enum_sort.yml
@@ -0,0 +1,15 @@
+prelude: |
+  set2 = 2.times.to_a.shuffle.to_set
+  set10 = 10.times.to_a.shuffle.to_set
+  set100 = 100.times.to_a.shuffle.to_set
+  set1000 = 1000.times.to_a.shuffle.to_set
+  set10000 = 10000.times.to_a.shuffle.to_set
+
+benchmark:
+  set2.sort_by: set2.sort_by { 0 }
+  set10.sort_by: set10.sort_by { 0 }
+  set100.sort_by: set100.sort_by { 0 }
+  set1000.sort_by: set1000.sort_by { 0 }
+  set10000.sort_by: set10000.sort_by { 0 }
+
+loop_count: 10000
diff --git a/benchmark/enum_sort_by.yml b/benchmark/enum_sort_by.yml
new file mode 100644
index 0000000000..d386353888
--- /dev/null
+++ b/benchmark/enum_sort_by.yml
@@ -0,0 +1,53 @@
+prelude: |
+  array_length = 2
+  fixnum_array2 = array_length.times.to_a.map {rand(10000)}
+  float_array2 = array_length.times.to_a.map {rand(10000.0).to_f}
+  string_array2 = array_length.times.to_a.map {"r" * rand(1..10000)}
+  mix_array2 = array_length.times.to_a.map {if rand(1..100) <= 50 then rand(1..10000).to_f else rand(1..10000) end}
+  all_zero_array2 =array_length.times.to_a.map {0}
+
+  array_length = 10
+  fixnum_array10 = array_length.times.to_a.map {rand(10000)}
+  float_array10 = array_length.times.to_a.map {rand(10000.0).to_f}
+  string_array10 = array_length.times.to_a.map {"r" * rand(1..10000)}
+  mix_array10 = array_length.times.to_a.map {if rand(1..100) <= 50 then rand(1..10000).to_f else rand(1..10000) end}
+  all_zero_array10 =array_length.times.to_a.map {0}
+
+  array_length = 1000
+  fixnum_array1000 = array_length.times.to_a.map {rand(10000)}
+  float_array1000 = array_length.times.to_a.map {rand(10000.0).to_f}
+  string_array1000 = array_length.times.to_a.map {"r" * rand(1..10000)}
+  mix_array1000 = array_length.times.to_a.map {if rand(1..100) <= 50 then rand(1..10000).to_f else rand(1..10000) end}
+  all_zero_array1000 =array_length.times.to_a.map {0}
+
+  array_length = 100000
+  fixnum_array100000 = array_length.times.to_a.map {rand(10000)}
+  float_array100000 = array_length.times.to_a.map {rand(10000.0).to_f}
+  string_array100000 = array_length.times.to_a.map {"r" * rand(1..10000)}
+  mix_array100000 = array_length.times.to_a.map {if rand(1..100) <= 50 then rand(1..10000).to_f else rand(1..10000) end}
+  all_zero_array100000 =array_length.times.to_a.map {0}
+
+benchmark:
+  fixnum_array2.sort_by: fixnum_array2.sort_by {|a| a}
+  float_array2.sort_by:  float_array2.sort_by {|a| a}
+  string_length2.sort_by: string_array2.sort_by {|a| a.length}
+  mix_array2.sort_by:  mix_array2.sort_by {|a| a}
+  all_zero2.sort_by: all_zero_array2.sort_by{|a| a}
+
+  fixnum_array10.sort_by: fixnum_array10.sort_by {|a| a}
+  float_array10.sort_by:  float_array10.sort_by {|a| a}
+  string_length10.sort_by: string_array10.sort_by {|a| a.length}
+  mix_array10.sort_by:  mix_array10.sort_by {|a| a}
+  all_zero10.sort_by: all_zero_array10.sort_by{|a| a}
+
+  fixnum_array1000.sort_by: fixnum_array1000.sort_by {|a| a}
+  float_array1000.sort_by:  float_array1000.sort_by {|a| a}
+  string_length1000.sort_by: string_array1000.sort_by {|a| a.length}
+  mix_array1000.sort_by:  mix_array1000.sort_by {|a| a}
+  all_zero1000.sort_by: all_zero_array1000.sort_by{|a| a}
+
+  fixnum_array100000.sort_by: fixnum_array100000.sort_by {|a| a}
+  float_array100000.sort_by:  float_array100000.sort_by {|a| a}
+  string_length100000.sort_by: string_array100000.sort_by {|a| a.length}
+  mix_array100000.sort_by:  mix_array100000.sort_by {|a| a}
+  all_zero100000.sort_by: all_zero_array100000.sort_by{|a| a}
diff --git a/benchmark/file_join.yml b/benchmark/file_join.yml
new file mode 100644
index 0000000000..845257cf1e
--- /dev/null
+++ b/benchmark/file_join.yml
@@ -0,0 +1,7 @@
+prelude: |
+  # frozen_string_literal: true
+benchmark:
+  two_strings: File.join(__FILE__, "path")
+  many_strings: File.join(__FILE__, "path", "a", "b", "c", "d")
+  array: File.join([__FILE__, "path", "a", "b", "c", "d"])
+  mixed: File.join(__FILE__, "path", "a", "b", ["c", "d"])
diff --git a/benchmark/hash_aref_str_lit.yml b/benchmark/hash_aref_str_lit.yml
new file mode 100644
index 0000000000..ed8142bcf1
--- /dev/null
+++ b/benchmark/hash_aref_str_lit.yml
@@ -0,0 +1,20 @@
+prelude: |
+  # frozen_string_literal: true
+  hash = 10.times.to_h do |i|
+    [i, i]
+  end
+  dyn_sym = "dynamic_symbol".to_sym
+  binary = RubyVM::InstructionSequence.compile("# frozen_string_literal: true\n'iseq_load'").to_binary
+  iseq_literal_string = RubyVM::InstructionSequence.load_from_binary(binary).eval
+
+  hash[:some_symbol] = 1
+  hash[dyn_sym] = 2
+  hash["small"] = 3
+  hash["frozen_string_literal"] = 4
+  hash[iseq_literal_string] = 5
+benchmark:
+  symbol: hash[:some_symbol]
+  dyn_symbol: hash[dyn_sym]
+  small_lit: hash["small"]
+  frozen_lit: hash["frozen_string_literal"]
+  iseq_lit: hash[iseq_literal_string]
diff --git a/benchmark/hash_key.yml b/benchmark/hash_key.yml
new file mode 100644
index 0000000000..cab4cf9ca4
--- /dev/null
+++ b/benchmark/hash_key.yml
@@ -0,0 +1,5 @@
+prelude: |
+  obj = Object.new
+  hash = { obj => true }
+benchmark: hash.key?(obj)
+loop_count: 30000000
diff --git a/benchmark/hash_new.yml b/benchmark/hash_new.yml
new file mode 100644
index 0000000000..9d8e34187f
--- /dev/null
+++ b/benchmark/hash_new.yml
@@ -0,0 +1,16 @@
+prelude: |
+  has_hash_with_capa = Hash.instance_method(:initialize).parameters.include?([:key, :capacity])
+  strings_1k = 1_000.times.map { |i| -i.to_s.freeze }
+  strings_100k = 100_000.times.map { |i| -i.to_s.freeze }
+benchmark:
+  new: Hash.new
+  new_with_capa_1k: |
+    h = has_hash_with_capa ? Hash.new(capacity: strings_1k.size) : {}
+    strings_1k.each do |x|
+      h[x] = true
+    end
+  new_with_capa_100k: |
+    h = has_hash_with_capa ? Hash.new(capacity: strings_100k.size) : {}
+    strings_100k.each do |x|
+      h[x] = true
+    end
diff --git a/benchmark/io_close.yml b/benchmark/io_close.yml
new file mode 100644
index 0000000000..a552872884
--- /dev/null
+++ b/benchmark/io_close.yml
@@ -0,0 +1,13 @@
+prelude: |
+  ios = 1000.times.map do
+    100.times.map{IO.pipe}
+  end
+benchmark:
+  # Close IO
+  io_close: |
+    # Process each batch of ios per iteration of the benchmark.
+    ios.pop.each do |r, w|
+      r.close
+      w.close
+    end
+loop_count: 100
diff --git a/benchmark/io_close_contended.yml b/benchmark/io_close_contended.yml
new file mode 100644
index 0000000000..1d9e4e0d0f
--- /dev/null
+++ b/benchmark/io_close_contended.yml
@@ -0,0 +1,21 @@
+prelude: |
+  ios = 100.times.map do
+    10.times.map do
+      pipe = IO.pipe.tap do |r, w|
+        Thread.new do
+          r.read
+        rescue IOError
+          # Ignore
+        end
+      end
+    end
+  end
+benchmark:
+  # Close IO
+  io_close_contended: |
+    # Process each batch of ios per iteration of the benchmark.
+    ios.pop.each do |r, w|
+      r.close
+      w.close
+    end
+loop_count: 10
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/ractor.rb b/benchmark/lib/benchmark_driver/runner/ractor.rb
index c730b8e4a5..fd9c2dd4db 100644
--- a/benchmark/lib/benchmark_driver/runner/ractor.rb
+++ b/benchmark/lib/benchmark_driver/runner/ractor.rb
@@ -87,7 +87,7 @@ __bmdv_ractors << Ractor.new(__bmdv_loop_after - __bmdv_loop_before) { |__bmdv_l
 <% end %>
 
 # Wait for all Ractors before executing code to write results
-__bmdv_ractors.map!(&:take)
+__bmdv_ractors.map!(&:value)
 
 <% results.each do |result| %>
 File.write(<%= result.dump %>, __bmdv_ractors.shift)
diff --git a/benchmark/loop_each.yml b/benchmark/loop_each.yml
new file mode 100644
index 0000000000..1c757185a8
--- /dev/null
+++ b/benchmark/loop_each.yml
@@ -0,0 +1,4 @@
+prelude: |
+  arr = [nil] * 30_000_000
+benchmark:
+  loop_each: arr.each{|e|}
diff --git a/benchmark/loop_generator.rb b/benchmark/loop_generator.rb
index d3375c744c..6a3194b670 100644
--- a/benchmark/loop_generator.rb
+++ b/benchmark/loop_generator.rb
@@ -1,4 +1,4 @@
-max = 600000
+max = 6000000
 
 if defined? Fiber
   gen = (1..max).each
diff --git a/benchmark/loop_times_megamorphic.yml b/benchmark/loop_times_megamorphic.yml
new file mode 100644
index 0000000000..f9343ba897
--- /dev/null
+++ b/benchmark/loop_times_megamorphic.yml
@@ -0,0 +1,7 @@
+prelude: |
+  eval(<<~EOS)
+    def loop_times_megamorphic
+      #{"1.times {|i|};" * 1000}
+    end
+  EOS
+benchmark: loop_times_megamorphic
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 a6b5c9ee16..0000000000
--- a/benchmark/mjit_integer.yml
+++ /dev/null
@@ -1,32 +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_comp(int)       ~int           end
-  def mjit_even?(int)      int.even?      end
-  def mjit_integer?(int)   int.integer?   end
-  def mjit_magnitude(int)  int.magnitude  end
-  def mjit_odd?(int)       int.odd?       end
-  def mjit_ord(int)        int.ord        end
-  def mjit_size(int)       int.size       end
-  def mjit_to_i(int)       int.to_i       end
-  def mjit_to_int(int)     int.to_int     end
-  def mjit_uminus(int)     -int           end
-  def mjit_zero?(int)      int.zero?      end
-
-benchmark:
-  - mjit_abs(-1)
-  - mjit_bit_length(100)
-  - mjit_comp(1)
-  - mjit_even?(2)
-  - mjit_integer?(0)
-  - mjit_magnitude(-1)
-  - mjit_odd?(1)
-  - mjit_ord(1)
-  - mjit_size(1)
-  - mjit_to_i(1)
-  - mjit_to_int(1)
-  - mjit_uminus(1)
-  - mjit_zero?(0)
-
-loop_count: 40000000
diff --git a/benchmark/mjit_kernel.yml b/benchmark/mjit_kernel.yml
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/module_eqq.yml b/benchmark/module_eqq.yml
index a561fb86dc..2f9c490d92 100644
--- a/benchmark/module_eqq.yml
+++ b/benchmark/module_eqq.yml
@@ -1,4 +1,5 @@
 prelude: |
+  module SomeModule; end
   class SimpleClass; end
   class MediumClass
     10.times { include Module.new }
@@ -24,4 +25,8 @@ benchmark:
     SimpleClass === LargeObj
   simple_class_eqq_huge_obj: |
     SimpleClass === HugeObj
-loop_count: 20000000
+  simple_class_eqq_module: |
+    SimpleClass === HugeObj
+  module_eqq_module: |
+    SomeModule === HugeObj
+loop_count: 10000000
diff --git a/benchmark/nilclass.yml b/benchmark/nilclass.yml
index fba67a5f6a..66234c4cdf 100644
--- a/benchmark/nilclass.yml
+++ b/benchmark/nilclass.yml
@@ -1,6 +1,16 @@
+prelude: |
+  def a = nil
 benchmark:
+  rationalize:
+    nil.rationalize
+  to_c: |
+    nil.to_c
   to_i: |
     nil.to_i
   to_f: |
     nil.to_f
+  to_r: |
+    nil.to_r
+  splat: |
+    a(*nil)
 loop_count: 100000
diff --git a/benchmark/object_allocate.yml b/benchmark/object_allocate.yml
index 93ff463e41..c6269923f0 100644
--- a/benchmark/object_allocate.yml
+++ b/benchmark/object_allocate.yml
@@ -11,6 +11,26 @@ prelude: |
   class OneTwentyEight
     128.times { include(Module.new) }
   end
+  class OnePositional
+    def initialize a; end
+  end
+  class TwoPositional
+    def initialize a, b; end
+  end
+  class ThreePositional
+    def initialize a, b, c; end
+  end
+  class FourPositional
+    def initialize a, b, c, d; end
+  end
+  class KWArg
+    def initialize a:, b:, c:, d:
+    end
+  end
+  class Mixed
+    def initialize a, b, c:, d:
+    end
+  end
   # Disable GC to see raw throughput:
   GC.disable
 benchmark:
@@ -18,4 +38,12 @@ benchmark:
   allocate_32_deep: ThirtyTwo.new
   allocate_64_deep: SixtyFour.new
   allocate_128_deep: OneTwentyEight.new
+  allocate_1_positional_params: OnePositional.new(1)
+  allocate_2_positional_params: TwoPositional.new(1, 2)
+  allocate_3_positional_params: ThreePositional.new(1, 2, 3)
+  allocate_4_positional_params: FourPositional.new(1, 2, 3, 4)
+  allocate_kwarg_params: "KWArg.new(a: 1, b: 2, c: 3, d: 4)"
+  allocate_mixed_params: "Mixed.new(1, 2, c: 3, d: 4)"
+  allocate_no_params: "Object.new"
+  allocate_allocate: "Object.allocate"
 loop_count: 100000
diff --git a/benchmark/object_class.yml b/benchmark/object_class.yml
new file mode 100644
index 0000000000..1e5409d1e2
--- /dev/null
+++ b/benchmark/object_class.yml
@@ -0,0 +1,40 @@
+prelude: |
+  def get_class(obj)
+    i = 10_000
+    while i > 0
+      i -= 1
+      # 100 times per loop
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+      obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class; obj.class;
+    end
+  end
+
+  class Obj
+  end
+  obj = Obj.new
+
+  singleton = Obj.new
+  def singleton.bar
+  end
+
+  extended = Obj.new
+  2.times do
+    extended.extend Module.new
+  end
+
+  immediate = 1.4
+benchmark:
+  obj: get_class(obj)
+  extended: get_class(extended)
+  singleton: get_class(singleton)
+  immediate: get_class(immediate)
+loop_count: 1000
diff --git a/benchmark/object_id.yml b/benchmark/object_id.yml
new file mode 100644
index 0000000000..2bd52b923f
--- /dev/null
+++ b/benchmark/object_id.yml
@@ -0,0 +1,4 @@
+benchmark:
+  baseline: "Object.new"
+  object_id: "Object.new.object_id"
+# loop_count: 100000
diff --git a/benchmark/ractor_string_fstring.yml b/benchmark/ractor_string_fstring.yml
new file mode 100644
index 0000000000..14b92d8fd8
--- /dev/null
+++ b/benchmark/ractor_string_fstring.yml
@@ -0,0 +1,18 @@
+type: lib/benchmark_driver/runner/ractor
+benchmark:
+  ractor_fstring_random: |
+    i = 0
+    str = "same".dup
+    while i < 2000000
+      -(i.to_s.freeze)
+      i += 1
+    end
+  ractor_fstring_same: |
+    i = 0
+    str = "same".dup
+    while i < 2000000
+      -str
+      i += 1
+    end
+loop_count: 1
+ractor: 4
diff --git a/benchmark/range_bsearch_bignum.yml b/benchmark/range_bsearch_bignum.yml
new file mode 100644
index 0000000000..5730c93fcf
--- /dev/null
+++ b/benchmark/range_bsearch_bignum.yml
@@ -0,0 +1,10 @@
+prelude: |
+  first = 2**100
+  last = 2**1000
+  mid = (first + last) / 2
+  r = first..last
+
+benchmark:
+  first: r.bsearch { |x| x >= first }
+  mid: r.bsearch { |x| x >= mid }
+  last: r.bsearch { |x| x >= last }
diff --git a/benchmark/range_bsearch_endpointless.yml b/benchmark/range_bsearch_endpointless.yml
new file mode 100644
index 0000000000..8d7bedb662
--- /dev/null
+++ b/benchmark/range_bsearch_endpointless.yml
@@ -0,0 +1,21 @@
+prelude: |
+  re = (1..)
+  rb = (..0)
+
+benchmark:
+  'endless 10**0': re.bsearch { |x| x >= 1 }
+  'endless 10**1': re.bsearch { |x| x >= 10 }
+  'endless 10**2': re.bsearch { |x| x >= 100 }
+  'endless 10**3': re.bsearch { |x| x >= 1000 }
+  'endless 10**4': re.bsearch { |x| x >= 10000 }
+  'endless 10**5': re.bsearch { |x| x >= 100000 }
+  'endless 10**10': re.bsearch { |x| x >= 10000000000 }
+  'endless 10**100': re.bsearch { |x| x >= 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 }
+  'beginless -10**0': rb.bsearch { |x| x >= -1 }
+  'beginless -10**1': rb.bsearch { |x| x >= -10 }
+  'beginless -10**2': rb.bsearch { |x| x >= -100 }
+  'beginless -10**3': rb.bsearch { |x| x >= -1000 }
+  'beginless -10**4': rb.bsearch { |x| x >= -10000 }
+  'beginless -10**5': rb.bsearch { |x| x >= -100000 }
+  'beginless -10**10': rb.bsearch { |x| x >= -10000000000 }
+  'beginless -10**100': rb.bsearch { |x| x >= -10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 }
diff --git a/benchmark/range_bsearch_fixnum.yml b/benchmark/range_bsearch_fixnum.yml
new file mode 100644
index 0000000000..59416531b9
--- /dev/null
+++ b/benchmark/range_bsearch_fixnum.yml
@@ -0,0 +1,10 @@
+prelude: |
+  first = 1
+  last = 10000
+  mid = (first + last) / 2
+  r = first..last
+
+benchmark:
+  first: r.bsearch { |x| x >= first }
+  mid: r.bsearch { |x| x >= mid }
+  last: r.bsearch { |x| x >= last }
diff --git a/benchmark/range_count.yml b/benchmark/range_count.yml
new file mode 100644
index 0000000000..58f53a0236
--- /dev/null
+++ b/benchmark/range_count.yml
@@ -0,0 +1,11 @@
+prelude: |
+  r_1 = 1..1
+  r_1k = 1..1000
+  r_1m = 1..1000000
+  r_str = 'a'..'z'
+
+benchmark:
+  'int 1': r_1.count
+  'int 1K': r_1k.count
+  'int 1M': r_1m.count
+  string: r_str.count
diff --git a/benchmark/range_min.yml b/benchmark/range_min.yml
new file mode 100644
index 0000000000..9e60dd7308
--- /dev/null
+++ b/benchmark/range_min.yml
@@ -0,0 +1,2 @@
+benchmark:
+  - (1..10).min
diff --git a/benchmark/range_overlap.yml b/benchmark/range_overlap.yml
new file mode 100644
index 0000000000..700a00053c
--- /dev/null
+++ b/benchmark/range_overlap.yml
@@ -0,0 +1,19 @@
+prelude: |
+  class Range
+    unless method_defined?(:overlap?)
+      def overlap?(other)
+        other.begin == self.begin || cover?(other.begin) || other.cover?(self.begin)
+      end
+    end
+  end
+
+benchmark:
+  - (2..3).overlap?(1..1)
+  - (2..3).overlap?(2..4)
+  - (2..3).overlap?(4..5)
+  - (2..3).overlap?(2..1)
+  - (2..3).overlap?(0..1)
+  - (2..3).overlap?(...1)
+  - (2...3).overlap?(..2)
+  - (2...3).overlap?(3...)
+  - (2..3).overlap?('a'..'d')
diff --git a/benchmark/range_reverse_each.yml b/benchmark/range_reverse_each.yml
new file mode 100644
index 0000000000..a32efeccc6
--- /dev/null
+++ b/benchmark/range_reverse_each.yml
@@ -0,0 +1,16 @@
+prelude: |
+  rf_1 = 0..1
+  rf_1k = 0..1000
+  rf_1m = 0..1000000
+  big = 2**1000
+  rb_1 = big..big+1
+  rb_1k = big..big+1000
+  rb_1m = big..big+1000000
+
+benchmark:
+  "Fixnum 1": rf_1.reverse_each { _1 }
+  "Fixnum 1K": rf_1k.reverse_each { _1 }
+  "Fixnum 1M": rf_1m.reverse_each { _1 }
+  "Bignum 1": rb_1.reverse_each { _1 }
+  "Bignum 1K": rb_1k.reverse_each { _1 }
+  "Bignum 1M": rb_1m.reverse_each { _1 }
diff --git a/benchmark/realpath.yml b/benchmark/realpath.yml
index 90a029d5b9..6b6a4836b0 100644
--- a/benchmark/realpath.yml
+++ b/benchmark/realpath.yml
@@ -12,6 +12,9 @@ prelude: |
   relative_dir = 'b/c'
   absolute_dir = File.join(pwd, relative_dir)
   file_dir = 'c'
+teardown: |
+  require 'fileutils'
+  FileUtils.rm_rf('b')
 benchmark:
   relative_nil: "f.realpath(relative, nil)"
   absolute_nil: "f.realpath(absolute, nil)"
diff --git a/benchmark/regexp_dup.yml b/benchmark/regexp_dup.yml
new file mode 100644
index 0000000000..52f89991cd
--- /dev/null
+++ b/benchmark/regexp_dup.yml
@@ -0,0 +1,6 @@
+prelude: |
+  str = "a" * 1000
+  re = Regexp.new(str)
+
+benchmark:
+  dup: re.dup
diff --git a/benchmark/regexp_new.yml b/benchmark/regexp_new.yml
new file mode 100644
index 0000000000..bc9ab3ca21
--- /dev/null
+++ b/benchmark/regexp_new.yml
@@ -0,0 +1,7 @@
+prelude: |
+  str = "a" * 1000
+  re = Regexp.new(str)
+
+benchmark:
+  string: Regexp.new(str)
+  regexp: Regexp.new(re)
diff --git a/benchmark/scan.yaml b/benchmark/scan.yaml
new file mode 100644
index 0000000000..62ad1d6862
--- /dev/null
+++ b/benchmark/scan.yaml
@@ -0,0 +1,16 @@
+prelude: |
+  $LOAD_PATH.unshift(File.expand_path("lib"))
+  require "strscan"
+  str = "test string"
+  scanner = StringScanner.new(str)
+  str = "test"
+  reg = /test/
+benchmark:
+  check(reg): |
+    scanner.check(reg)
+  check(str): |
+    scanner.check(str)
+  match?(reg): |
+    scanner.match?(reg)
+  match?(str): |
+    scanner.match?(str)
diff --git a/benchmark/search.yaml b/benchmark/search.yaml
new file mode 100644
index 0000000000..42a50c90e6
--- /dev/null
+++ b/benchmark/search.yaml
@@ -0,0 +1,16 @@
+prelude: |
+  $LOAD_PATH.unshift(File.expand_path("lib"))
+  require "strscan"
+  str = "test string"
+  scanner = StringScanner.new(str)
+  str = "string"
+  reg = /string/
+benchmark:
+  check_until(reg): |
+    scanner.check_until(reg)
+  check_until(str): |
+    scanner.check_until(str)
+  exist?(reg): |
+    scanner.exist?(reg)
+  exist?(str): |
+    scanner.exist?(str)
diff --git a/benchmark/set.yml b/benchmark/set.yml
new file mode 100644
index 0000000000..061509cb1f
--- /dev/null
+++ b/benchmark/set.yml
@@ -0,0 +1,261 @@
+prelude: |
+  # First 1000 digits of pi
+  pi = <<~END.gsub(/\D/, '')
+    31415926535897932384626433832795028841971693993751058209749445923078164062862089
+    98628034825342117067982148086513282306647093844609550582231725359408128481117450
+    28410270193852110555964462294895493038196442881097566593344612847564823378678316
+    52712019091456485669234603486104543266482133936072602491412737245870066063155881
+    74881520920962829254091715364367892590360011330530548820466521384146951941511609
+    43305727036575959195309218611738193261179310511854807446237996274956735188575272
+    48912279381830119491298336733624406566430860213949463952247371907021798609437027
+    70539217176293176752384674818467669405132000568127145263560827785771342757789609
+    17363717872146844090122495343014654958537105079227968925892354201995611212902196
+    08640344181598136297747713099605187072113499999983729780499510597317328160963185
+    95024459455346908302642522308253344685035261931188171010003137838752886587533208
+    38142061717766914730359825349042875546873115956286388235378759375195778185778053
+    21712268066130019278766111959092164201989380952572010654505906988788448549
+  END
+  array1 = 10.times.flat_map do |i|
+    pi[i...].chars.each_slice(10).map(&:join)
+  end
+  array2 = array1.map(&:reverse)
+  array1.map!(&:to_i)
+  array2.map!(&:to_i)
+  a1 = array1[...10]
+  a2 = array1[...100]
+  a3 = array1
+  oa1 = array2[...10]
+  oa2 = array2[...100]
+  oa3 = array2
+  s0 = Set.new
+  s0 = Set.new
+  s1 = Set.new(a1)
+  s2 = Set.new(a2)
+  s3 = Set.new(a3)
+  o0 = Set.new
+  o1 = Set.new(array2[...10])
+  o2 = Set.new(array2[...100])
+  o3 = Set.new(array2)
+  d0 = s0.dup
+  d1 = s1.dup
+  d2 = s2.dup
+  d3 = s3.dup
+  ss1 = s1 - a1[-1..-1]
+  ss2 = s2 - a2[-1..-1]
+  ss3 = s3 - a3[-1..-1]
+  os1 = o1 - oa1[-1..-1]
+  os2 = o2 - oa2[-1..-1]
+  os3 = o3 - oa3[-1..-1]
+  member = a1.first
+  cbi = s0.dup.compare_by_identity
+  ns = Set[s3, o3, d3]
+  set_subclass = Class.new(Set)
+
+benchmark:
+  new_0: Set.new
+  new_10: Set.new(a1)
+  new_100: Set.new(a2)
+  new_1000: Set.new(a3)
+  aref_0: Set[]
+  aref_10: Set[*a1]
+  aref_100: Set[*a2]
+  aref_1000: Set[*a3]
+  amp_0: s0 & o0
+  amp_10: s1 & o1
+  amp_100: s2 & o2
+  amp_1000: s3 & o3
+  amp_same_0: s0 & d0
+  amp_same_10: s1 & d1
+  amp_same_100: s2 & d2
+  amp_same_1000: s3 & d3
+  minus_0: s0 - o0
+  minus_10: s1 - o1
+  minus_100: s2 - o2
+  minus_1000: s3 - o3
+  minus_same_0: s0 - d0
+  minus_same_10: s1 - d1
+  minus_same_100: s2 - d2
+  minus_same_1000: s3 - d3
+  spaceship_0: s0 <=> o0
+  spaceship_diff_10: s1 <=> o1
+  spaceship_diff_100: s2 <=> o2
+  spaceship_diff_1000: s2 <=> o3
+  spaceship_sub_10: s1 <=> ss1
+  spaceship_sub_100: s2 <=> ss2
+  spaceship_sub_1000: s2 <=> ss3
+  spaceship_sup_10: ss1 <=> s1
+  spaceship_sup_100: ss2 <=> s2
+  spaceship_sup_1000: ss2 <=> s3
+  eq_0: s0 == o0
+  eq_10: s1 == o1
+  eq_100: s2 == o2
+  eq_1000: s3 == o3
+  eq_same_0: s0 == d0
+  eq_same_10: s1 == d1
+  eq_same_100: s2 == d2
+  eq_same_1000: s3 == d3
+  xor_0: s0 ^ o0
+  xor_10: s1 ^ o1
+  xor_100: s2 ^ o2
+  xor_1000: s3 ^ o3
+  xor_same_0: s0 ^ d0
+  xor_same_10: s1 ^ d1
+  xor_same_100: s2 ^ d2
+  xor_same_1000: s3 ^ d3
+  pipe_0: s0 | o0
+  pipe_10: s1 | o1
+  pipe_100: s2 | o2
+  pipe_1000: s3 | o3
+  pipe_same_0: s0 | d0
+  pipe_same_10: s1 | d1
+  pipe_same_100: s2 | d2
+  pipe_same_1000: s3 | d3
+  add: a3.each { s0.add(it) }
+  add_exist: a3.each { s3.add(it) }
+  addq: a3.each { s0.add?(it) }
+  addq_exist: a3.each { s3.add?(it) }
+  classify_0: s0.classify { it }
+  classify_10: s1.classify { it & 2 }
+  classify_100: s2.classify { it & 8 }
+  classify_1000: s3.classify { it & 32 }
+  clear: s0.clear
+  collect_0: s0.collect! { it }
+  collect_10: s1.collect! { it }
+  collect_100: s2.collect! { it }
+  collect_1000: s3.collect! { it }
+  compare_by_identity_0: s0.dup.compare_by_identity
+  compare_by_identity_10: s1.dup.compare_by_identity
+  compare_by_identity_100: s2.dup.compare_by_identity
+  compare_by_identity_1000: s3.dup.compare_by_identity
+  compare_by_identityq_false: s0.compare_by_identity?
+  compare_by_identityq_true: cbi.compare_by_identity?
+  clone_0: s0.clone
+  clone_10: s1.clone
+  clone_100: s2.clone
+  clone_1000: s3.clone
+  delete: a3.each { s3.delete(it) }
+  delete_not_exist: a3.each { o3.delete(it) }
+  deleteq: a3.each { s3.delete?(it) }
+  deleteq_not_exist: a3.each { o3.delete?(it) }
+  delete_if_0: s0.delete_if { it }
+  delete_if_10: s1.delete_if { it & 2 == 0 }
+  delete_if_100: s2.delete_if { it & 2 == 0 }
+  delete_if_1000: s3.delete_if { it & 2 == 0 }
+  disjoint_0: s0.disjoint? o0
+  disjoint_10: s1.disjoint? o1
+  disjoint_100: s2.disjoint? o2
+  disjoint_1000: s3.disjoint? o3
+  disjoint_same_0: s0.disjoint? d0
+  disjoint_same_10: s1.disjoint? d1
+  disjoint_same_100: s2.disjoint? d2
+  disjoint_same_1000: s3.disjoint? d3
+  divide_1arity_0: s0.divide { true }
+  divide_1arity_10: s1.divide { it & 2 }
+  divide_1arity_100: s2.divide { it & 8 }
+  divide_1arity_1000: s3.divide { it & 32 }
+  divide_2arity_0: s0.divide { true }
+  divide_2arity_10: s1.divide { (_1 & 2) == (_2 & 2) }
+  divide_2arity_100: s2.divide { (_1 & 8) == (_2 & 8) }
+  divide_2arity_1000: s3.divide { (_1 & 32) == (_2 & 32) }
+  dup_0: s0.dup
+  dup_10: s1.dup
+  dup_100: s2.dup
+  dup_1000: s3.dup
+  each_0: s0.each { it }
+  each_10: s1.each { it }
+  each_100: s2.each { it }
+  each_1000: s3.each { it }
+  empty_true: s0.empty?
+  empty_false: s3.empty?
+  flatten: ns.flatten
+  flattenb: ns.flatten!
+  include_true_0: s0.include? member
+  include_true_10: s1.include? member
+  include_true_100: s2.include? member
+  include_true_1000: s3.include? member
+  include_false_0: s0.include?(-1)
+  include_false_10: s1.include?(-1)
+  include_false_100: s2.include?(-1)
+  include_false_1000: s3.include?(-1)
+  intersect_0: s0.intersect? o0
+  intersect_10: s1.intersect? o1
+  intersect_100: s2.intersect? o2
+  intersect_1000: s3.intersect? o3
+  intersect_same_0: s0.intersect? d0
+  intersect_same_10: s1.intersect? d1
+  intersect_same_100: s2.intersect? d2
+  intersect_same_1000: s3.intersect? d3
+  join_0: s0.join
+  join_10: s1.join
+  join_100: s2.join
+  join_1000: s3.join
+  join_arg_0: s0.join ""
+  join_arg_10: s1.join ""
+  join_arg_100: s2.join ""
+  join_arg_1000: s3.join ""
+  keep_if_0: s0.keep_if { it }
+  keep_if_10: s1.keep_if { it & 2 == 0 }
+  keep_if_100: s2.keep_if { it & 2 == 0 }
+  keep_if_1000: s3.keep_if { it & 2 == 0 }
+  merge_set: s0.dup.merge(s3, o3)
+  merge_enum: s0.dup.merge(array1, array2)
+  proper_subset_0: s0.proper_subset? s0
+  proper_subset_10: s1.proper_subset? ss1
+  proper_subset_100: s2.proper_subset? ss2
+  proper_subset_1000: s3.proper_subset? ss3
+  proper_subset_false_10: s1.proper_subset? os1
+  proper_subset_false_100: s2.proper_subset? os2
+  proper_subset_false_1000: s3.proper_subset? os3
+  proper_superset_0: s0.proper_superset? s0
+  proper_superset_10: ss1.proper_superset? s1
+  proper_superset_100: ss2.proper_superset? s2
+  proper_superset_1000: ss3.proper_superset? s3
+  proper_superset_false_10: os1.proper_superset? s1
+  proper_superset_false_100: os2.proper_superset? s2
+  proper_superset_false_1000: os3.proper_superset? s3
+  reject_0: s0.reject! { it }
+  reject_10: s1.reject! { it & 2 == 0 }
+  reject_100: s2.reject! { it & 2 == 0 }
+  reject_1000: s3.reject! { it & 2 == 0 }
+  replace_0: s = Set.new; array1.each { s.replace(s0) }
+  replace_10: s = Set.new; array1.each { s.replace(s1) }
+  replace_100: s = Set.new; array1.each { s.replace(s2) }
+  replace_1000: s = Set.new; array1.each { s.replace(s3) }
+  reset_0: s0.reset
+  reset_10: s1.reset
+  reset_100: s2.reset
+  reset_1000: s3.reset
+  select_0: s0.select! { it }
+  select_10: s1.select! { it & 2 == 0 }
+  select_100: s2.select! { it & 2 == 0 }
+  select_1000: s3.select! { it & 2 == 0 }
+  size_0: s0.size
+  size_10: s1.size
+  size_100: s2.size
+  size_1000: s3.size
+  subtract_set: s3.dup.subtract(os3)
+  subtract_enum: s3.dup.subtract(oa3)
+  subtract_same_set: s3.dup.subtract(s3)
+  subtract_same_enum: s3.dup.subtract(a3)
+  subset_0: s0.subset? s0
+  subset_10: s1.subset? ss1
+  subset_100: s2.subset? ss2
+  subset_1000: s3.subset? ss3
+  subset_false_10: s1.subset? os1
+  subset_false_100: s2.subset? os2
+  subset_false_1000: s3.subset? os3
+  superset_0: s0.superset? s0
+  superset_10: ss1.superset? s1
+  superset_100: ss2.superset? s2
+  superset_1000: ss3.superset? s3
+  superset_false_10: os1.superset? s1
+  superset_false_100: os2.superset? s2
+  superset_false_1000: os3.superset? s3
+  to_a_0: s0.to_a
+  to_a_10: s1.to_a
+  to_a_100: s2.to_a
+  to_a_1000: s3.to_a
+  to_set_0: s0.to_set
+  to_set_10: s1.to_set
+  to_set_100: s2.to_set
+  to_set_1000: s3.to_set
diff --git a/benchmark/so_count_words.yml b/benchmark/so_count_words.yml
index 99683505f9..f7322a8541 100644
--- a/benchmark/so_count_words.yml
+++ b/benchmark/so_count_words.yml
@@ -15,13 +15,13 @@ prelude: |
   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 :-).  
+  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:
@@ -38,8 +38,9 @@ prelude: |
       13.times{
         data << data
       }
-      open(wcinput, 'w'){|f| f.write data}
+      File.write(wcinput, data)
     end
+    at_exit {File.unlink(wcinput) rescue nil}
   end
 
   prepare_wc_input(wc_input_base)
@@ -49,16 +50,16 @@ benchmark:
     # $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
+    File.open(File.join(File.dirname($0), 'wc.input'), 'rb') do |input|
+      while tmp = input.read(4096)
+        data = tmp << (input.gets || "")
+        nc += data.length
+        nl += data.count("\n")
+        ((data.strip! || data).tr!("\n", " ") || data).squeeze!
+        nw += data.count(" ") + 1
+      end
     end
     # STDERR.puts "#{nl} #{nw} #{nc}"
 
diff --git a/benchmark/so_meteor_contest.rb b/benchmark/so_meteor_contest.rb
index 8c136baa6c..d8c8e3ab9c 100644
--- a/benchmark/so_meteor_contest.rb
+++ b/benchmark/so_meteor_contest.rb
@@ -447,7 +447,7 @@ end
 #   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
+#   diminish 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)
diff --git a/benchmark/string_casecmp.yml b/benchmark/string_casecmp.yml
index 2354040a04..88a3555c8a 100644
--- a/benchmark/string_casecmp.yml
+++ b/benchmark/string_casecmp.yml
@@ -20,7 +20,9 @@ benchmark:
   casecmp-10: lstr10.casecmp(ustr10)
   casecmp-100: lstr100.casecmp(ustr100)
   casecmp-1000: lstr1000.casecmp(ustr1000)
+  casecmp-1000vs10: lstr1000.casecmp(ustr10)
   casecmp-nonascii1: lnonascii1.casecmp(unonascii1)
   casecmp-nonascii10: lnonascii10.casecmp(unonascii10)
   casecmp-nonascii100: lnonascii100.casecmp(unonascii100)
   casecmp-nonascii1000: lnonascii1000.casecmp(unonascii1000)
+  casecmp-nonascii1000vs10: lnonascii1000.casecmp(unonascii10)
diff --git a/benchmark/string_concat.yml b/benchmark/string_concat.yml
index e65c00cca9..f11f95ee9a 100644
--- a/benchmark/string_concat.yml
+++ b/benchmark/string_concat.yml
@@ -1,6 +1,8 @@
 prelude: |
   CHUNK = "a" * 64
   UCHUNK = "é" * 32
+  SHORT = "a" * (GC::INTERNAL_CONSTANTS[:BASE_SLOT_SIZE] / 2)
+  LONG = "a" * (GC::INTERNAL_CONSTANTS[:BASE_SLOT_SIZE] * 2)
   GC.disable # GC causes a lot of variance
 benchmark:
   binary_concat_7bit: |
@@ -43,3 +45,7 @@ benchmark:
       "#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}" \
       "#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}" \
       "#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}#{CHUNK}"
+  interpolation_same_heap: |
+    buffer = "#{SHORT}#{SHORT}"
+  interpolation_switching_heaps: |
+    buffer = "#{SHORT}#{LONG}"
diff --git a/benchmark/string_dup.yml b/benchmark/string_dup.yml
new file mode 100644
index 0000000000..90793f9f2a
--- /dev/null
+++ b/benchmark/string_dup.yml
@@ -0,0 +1,7 @@
+prelude: |
+  # frozen_string_literal: true
+benchmark:
+  uplus: |
+    +"A"
+  dup: |
+    "A".dup
diff --git a/benchmark/string_fstring.yml b/benchmark/string_fstring.yml
new file mode 100644
index 0000000000..cafef1f3fe
--- /dev/null
+++ b/benchmark/string_fstring.yml
@@ -0,0 +1,16 @@
+benchmark:
+  fstring_random: |
+    i = 0
+    str = "same".dup
+    while i < 5_000_000
+      -(i.to_s.freeze)
+      i += 1
+    end
+  fstring_same: |
+    i = 0
+    str = "same".dup
+    while i < 10_000_000
+      -str
+      i += 1
+    end
+loop_count: 1
diff --git a/benchmark/string_gsub.yml b/benchmark/string_gsub.yml
new file mode 100644
index 0000000000..0f964337dd
--- /dev/null
+++ b/benchmark/string_gsub.yml
@@ -0,0 +1,43 @@
+prelude: |
+  # frozen_string_literal: true
+  STR = ((("a" * 31) + "<") * 1000).freeze
+  STR_UNICODE = ((("a" * 30) + "\u2028") * 1000).freeze
+  ESCAPED_CHARS_BINARY = {
+    "\u2028".b => '\u2028'.b,
+    "\u2029".b => '\u2029'.b,
+    ">".b => '\u003e'.b.freeze,
+    "<".b => '\u003c'.b.freeze,
+    "&".b => '\u0026'.b.freeze,
+  }
+  BINARY_PATTERN = Regexp.union(ESCAPED_CHARS_BINARY.keys)
+
+  ESCAPED_CHARS = {
+    "\u2028" => '\u2028',
+    "\u2029" => '\u2029',
+    ">" => '\u003e',
+    "<" => '\u003c',
+    "&" => '\u0026',
+  }
+  ESCAPE_PATTERN = Regexp.union(ESCAPED_CHARS.keys)
+
+
+benchmark:
+  escape: |
+    str = STR.dup
+    str.gsub!(ESCAPE_PATTERN, ESCAPED_CHARS)
+    str
+
+  escape_bin: |
+    str = STR.b
+    str.gsub!(BINARY_PATTERN, ESCAPED_CHARS_BINARY)
+    str.force_encoding(Encoding::UTF_8)
+
+  escape_utf8: |
+    str = STR_UNICODE.dup
+    str.gsub!(ESCAPE_PATTERN, ESCAPED_CHARS)
+    str
+
+  escape_utf8_bin: |
+    str = STR_UNICODE.b
+    str.gsub!(BINARY_PATTERN, ESCAPED_CHARS_BINARY)
+    str.force_encoding(Encoding::UTF_8)
diff --git a/benchmark/string_rpartition.yml b/benchmark/string_rpartition.yml
new file mode 100644
index 0000000000..37e9d1b071
--- /dev/null
+++ b/benchmark/string_rpartition.yml
@@ -0,0 +1,18 @@
+prelude: |
+  str1 = [*"a".."z",*"0".."9"].join("")
+  str10 = str1 * 10 + ":"
+  str100 = str1 * 100 + ":"
+  str1000 = str1 * 1000 + ":"
+  nonascii1 = [*"\u{e0}".."\u{ff}"].join("")
+  nonascii10 = nonascii1 * 10 + ":"
+  nonascii100 = nonascii1 * 100 + ":"
+  nonascii1000 = nonascii1 * 1000 + ":"
+benchmark:
+  rpartition-1: str1.rpartition(":")
+  rpartition-10: str10.rpartition(":")
+  rpartition-100: str100.rpartition(":")
+  rpartition-1000: str1000.rpartition(":")
+  rpartition-nonascii1: nonascii1.rpartition(":")
+  rpartition-nonascii10: nonascii10.rpartition(":")
+  rpartition-nonascii100: nonascii100.rpartition(":")
+  rpartition-nonascii1000: nonascii1000.rpartition(":")
diff --git a/benchmark/struct_accessor.yml b/benchmark/struct_accessor.yml
new file mode 100644
index 0000000000..d95240e2dd
--- /dev/null
+++ b/benchmark/struct_accessor.yml
@@ -0,0 +1,37 @@
+prelude: |
+  C = Struct.new(:x) do
+    def initialize(...)
+      super
+      @ivar = 42
+    end
+
+    attr_accessor :ivar
+
+    class_eval <<-END
+      def r
+        #{'x;'*256}
+      end
+      def w
+        #{'self.x = nil;'*256}
+      end
+      def rm
+        m = method(:x)
+        #{'m.call;'*256}
+      end
+      def wm
+        m = method(:x=)
+        #{'m.call(nil);'*256}
+      end
+      def r_ivar
+        #{'ivar;'*256}
+      end
+    END
+  end
+  C.new(nil) # ensure common shape is known
+  obj = C.new(nil)
+benchmark:
+  member_reader: "obj.r"
+  member_writer: "obj.w"
+  member_reader_method: "obj.rm"
+  member_writer_method: "obj.wm"
+  ivar_reader: "obj.r_ivar"
diff --git a/benchmark/time_now.yml b/benchmark/time_now.yml
index f6d6a31489..9336877cd4 100644
--- a/benchmark/time_now.yml
+++ b/benchmark/time_now.yml
@@ -1,3 +1,4 @@
 benchmark:
   - 'Time.now'
   - 'Time.now(in: "+09:00")'
+  - 'Time.now.year'
diff --git a/benchmark/time_parse.yml b/benchmark/time_parse.yml
index a6d6948b9c..6060b58bc6 100644
--- a/benchmark/time_parse.yml
+++ b/benchmark/time_parse.yml
@@ -6,3 +6,5 @@ benchmark:
   - Time.iso8601(iso8601)
   - Time.parse(iso8601)
   - Time.parse(inspect)
+  - Time.new(iso8601) rescue Time.iso8601(iso8601)
+  - Time.new(inspect) rescue Time.parse(inspect)
diff --git a/benchmark/time_strftime.yml b/benchmark/time_strftime.yml
new file mode 100644
index 0000000000..28f62aec87
--- /dev/null
+++ b/benchmark/time_strftime.yml
@@ -0,0 +1,7 @@
+prelude: |
+  # frozen_string_literal: true
+  time = Time.now
+benchmark:
+  - time.strftime("%FT%T")     # 19B
+  - time.strftime("%FT%T.%3N") # 23B
+  - time.strftime("%FT%T.%6N") # 26B
diff --git a/benchmark/time_xmlschema.yml b/benchmark/time_xmlschema.yml
new file mode 100644
index 0000000000..654e5cfcbc
--- /dev/null
+++ b/benchmark/time_xmlschema.yml
@@ -0,0 +1,27 @@
+prelude: |
+  # frozen_string_literal
+  unless Time.method_defined?(:xmlschema)
+    class Time
+      def xmlschema(fraction_digits=0)
+        fraction_digits = fraction_digits.to_i
+        s = strftime("%FT%T")
+        if fraction_digits > 0
+          s << strftime(".%#{fraction_digits}N")
+        end
+        s << (utc? ? 'Z' : strftime("%:z"))
+      end
+    end
+  end
+  time = Time.now
+  utc_time = Time.now.utc
+  fraction_sec = Time.at(123456789.quo(9999999999)).getlocal("+09:00")
+  future_time = Time.utc(10000)
+benchmark:
+  - time.xmlschema
+  - utc_time.xmlschema
+  - time.xmlschema(6)
+  - utc_time.xmlschema(6)
+  - time.xmlschema(9)
+  - utc_time.xmlschema(9)
+  - fraction_sec.xmlschema(10)
+  - future_time.xmlschema
diff --git a/benchmark/vm_call_bmethod.yml b/benchmark/vm_call_bmethod.yml
new file mode 100644
index 0000000000..40136e5aa4
--- /dev/null
+++ b/benchmark/vm_call_bmethod.yml
@@ -0,0 +1,37 @@
+prelude: |
+  define_method(:a0){}
+  define_method(:a1){|a| a}
+  define_method(:s){|*a| a}
+  define_method(:b){|kw: 1| kw}
+
+  t0 = 0.times.to_a
+  t1 = 1.times.to_a
+  t10 = 10.times.to_a
+  t100 = 100.times.to_a
+  kw = {kw: 2}
+benchmark:
+  bmethod_simple_0: |
+    a0
+  bmethod_simple_1: |
+    a1(1)
+  bmethod_simple_0_splat: |
+    a0(*t0)
+  bmethod_simple_1_splat: |
+    a1(*t1)
+  bmethod_no_splat: |
+    s
+  bmethod_0_splat: |
+    s(*t0)
+  bmethod_1_splat: |
+    s(*t1)
+  bmethod_10_splat: |
+    s(*t10)
+  bmethod_100_splat: |
+    s(*t100)
+  bmethod_kw: |
+    b(kw: 1)
+  bmethod_no_kw: |
+    b
+  bmethod_kw_splat: |
+    b(**kw)
+loop_count: 6000000
diff --git a/benchmark/vm_call_kw_and_kw_splat.yml b/benchmark/vm_call_kw_and_kw_splat.yml
new file mode 100644
index 0000000000..aa6e549e0c
--- /dev/null
+++ b/benchmark/vm_call_kw_and_kw_splat.yml
@@ -0,0 +1,25 @@
+prelude: |
+  h1, h10, h100, h1000 = [1, 10, 100, 1000].map do |n|
+    h = {kw: 1}
+    n.times{|i| h[i.to_s.to_sym] = i}
+    h
+  end
+  eh = {}
+  def kw(kw: nil, **kws) end
+benchmark:
+  1: |
+    kw(**h1)
+  1_mutable: |
+    kw(**eh, **h1)
+  10: |
+    kw(**h10)
+  10_mutable: |
+    kw(**eh, **h10)
+  100: |
+    kw(**h100)
+  100_mutable: |
+    kw(**eh, **h100)
+  1000: |
+    kw(**h1000)
+  1000_mutable: |
+    kw(**eh, **h1000)
diff --git a/benchmark/vm_call_method_missing.yml b/benchmark/vm_call_method_missing.yml
new file mode 100644
index 0000000000..f890796f11
--- /dev/null
+++ b/benchmark/vm_call_method_missing.yml
@@ -0,0 +1,62 @@
+prelude: |
+  class A0
+    def method_missing(m); m end
+  end
+  class A1
+    def method_missing(m, a) a; end
+  end
+  class S
+    def method_missing(m, *a) a; end
+  end
+  class B
+    def method_missing(m, kw: 1) kw end
+  end
+  class SB
+    def method_missing(m, *a, kw: 1) kw end
+  end
+
+  t0 = 0.times.to_a
+  t1 = 1.times.to_a
+  t10 = 10.times.to_a
+  t200 = 200.times.to_a
+  kw = {kw: 2}
+
+  a0 = A0.new
+  a1 = A1.new
+  s = S.new
+  b = B.new
+  sb = SB.new
+benchmark:
+  method_missing_simple_0: |
+    a0.()
+  method_missing_simple_1: |
+    a1.x(1)
+  method_missing_simple_0_splat: |
+    a0.(*t0)
+  method_missing_simple_1_splat: |
+    a1.(*t1)
+  method_missing_no_splat: |
+    s.()
+  method_missing_0_splat: |
+    s.(*t0)
+  method_missing_1_splat: |
+    s.(*t1)
+  method_missing_10_splat: |
+    s.(*t10)
+  method_missing_200_splat: |
+    s.(*t200)
+  method_missing_kw: |
+    b.(kw: 1)
+  method_missing_no_kw: |
+    b.()
+  method_missing_kw_splat: |
+    b.(**kw)
+  method_missing_0_splat_kw: |
+    sb.(*t0, **kw)
+  method_missing_1_splat_kw: |
+    sb.(*t1, **kw)
+  method_missing_10_splat_kw: |
+    sb.(*t10, **kw)
+  method_missing_200_splat_kw: |
+    sb.(*t200, **kw)
+loop_count: 1000000
diff --git a/benchmark/vm_call_send_iseq.yml b/benchmark/vm_call_send_iseq.yml
new file mode 100644
index 0000000000..60ff23c475
--- /dev/null
+++ b/benchmark/vm_call_send_iseq.yml
@@ -0,0 +1,77 @@
+prelude: |
+  def a0; end
+  def a1(a) a; end
+  def s(*a) a; end
+  def b(kw: 1) kw end
+  def sb(*a, kw: 1) kw end
+
+  t0 = 0.times.to_a
+  t1 = 1.times.to_a
+  t10 = 10.times.to_a
+  t200 = 200.times.to_a
+
+  a0_t0 = [:a0, *t0]
+  a1_t1 = [:a1, *t1]
+  s_t0 = [:s, *t0]
+  s_t1 = [:s, *t1]
+  s_t10 = [:s, *t10]
+  s_t200 = [:s, *t200]
+  sb_t0 = [:sb, *t0]
+  sb_t1 = [:sb, *t1]
+  sb_t10 = [:sb, *t10]
+  sb_t200 = [:sb, *t200]
+  kw = {kw: 2}
+benchmark:
+  send_simple_0: |
+    send(:a0)
+  send_simple_1: |
+    send(:a1, 1)
+  send_simple_0_splat: |
+    send(:a0, *t0)
+  send_simple_1_splat: |
+    send(:a1, *t1)
+  send_simple_0_splat_comb: |
+    send(*a0_t0)
+  send_simple_1_splat_comb: |
+    send(*a1_t1)
+  send_no_splat: |
+    send(:s)
+  send_0_splat: |
+    send(:s, *t0)
+  send_1_splat: |
+    send(:s, *t1)
+  send_10_splat: |
+    send(:s, *t10)
+  send_200_splat: |
+    send(:s, *t200)
+  send_0_splat_comb: |
+    send(*s_t0)
+  send_1_splat_comb: |
+    send(*s_t1)
+  send_10_splat_comb: |
+    send(*s_t10)
+  send_200_splat_comb: |
+    send(*s_t200)
+  send_kw: |
+    send(:b, kw: 1)
+  send_no_kw: |
+    send(:b)
+  send_kw_splat: |
+    send(:b, **kw)
+  send_0_splat_kw: |
+    send(:sb, *t0, **kw)
+  send_1_splat_kw: |
+    send(:sb, *t1, **kw)
+  send_10_splat_kw: |
+    send(:sb, *t10, **kw)
+  send_200_splat_kw: |
+    send(:sb, *t200, **kw)
+  send_0_splat_comb_kw: |
+    send(*sb_t0, **kw)
+  send_1_splat_comb_kw: |
+    send(*sb_t1, **kw)
+  send_10_splat_comb_kw: |
+    send(*sb_t10, **kw)
+  send_200_splat_comb_kw: |
+    send(*sb_t200, **kw)
+loop_count: 3000000
diff --git a/benchmark/vm_call_symproc.yml b/benchmark/vm_call_symproc.yml
new file mode 100644
index 0000000000..16e0ac579e
--- /dev/null
+++ b/benchmark/vm_call_symproc.yml
@@ -0,0 +1,83 @@
+prelude: |
+  def self.a0; end
+  def self.a1(a) a; end
+  def self.s(*a) a; end
+  def self.b(kw: 1) kw end
+  def self.sb(*a, kw: 1) kw end
+
+  t0 = 0.times.to_a
+  t1 = 1.times.to_a
+  t10 = 10.times.to_a
+  t200 = 200.times.to_a
+
+  a0_t0 = [self, *t0]
+  a1_t1 = [self, *t1]
+  s_t0 = [self, *t0]
+  s_t1 = [self, *t1]
+  s_t10 = [self, *t10]
+  s_t200 = [self, *t200]
+  sb_t0 = [self, *t0]
+  sb_t1 = [self, *t1]
+  sb_t10 = [self, *t10]
+  sb_t200 = [self, *t200]
+  kw = {kw: 2}
+
+  a0 = :a0.to_proc
+  a1 = :a1.to_proc
+  s = :s.to_proc
+  b = :b.to_proc
+  sb = :sb.to_proc
+benchmark:
+  symproc_simple_0: |
+    a0.(self)
+  symproc_simple_1: |
+    a1.(self, 1)
+  symproc_simple_0_splat: |
+    a0.(self, *t0)
+  symproc_simple_1_splat: |
+    a1.(self, *t1)
+  symproc_simple_0_splat_comb: |
+    a0.(*a0_t0)
+  symproc_simple_1_splat_comb: |
+    a1.(*a1_t1)
+  symproc_no_splat: |
+    s.(self)
+  symproc_0_splat: |
+    s.(self, *t0)
+  symproc_1_splat: |
+    s.(self, *t1)
+  symproc_10_splat: |
+    s.(self, *t10)
+  symproc_200_splat: |
+    s.(self, *t200)
+  symproc_0_splat_comb: |
+    s.(*s_t0)
+  symproc_1_splat_comb: |
+    s.(*s_t1)
+  symproc_10_splat_comb: |
+    s.(*s_t10)
+  symproc_200_splat_comb: |
+    s.(*s_t200)
+  symproc_kw: |
+    b.(self, kw: 1)
+  symproc_no_kw: |
+    b.(self)
+  symproc_kw_splat: |
+    b.(self, **kw)
+  symproc_0_splat_kw: |
+    sb.(self, *t0, **kw)
+  symproc_1_splat_kw: |
+    sb.(self, *t1, **kw)
+  symproc_10_splat_kw: |
+    sb.(self, *t10, **kw)
+  symproc_200_splat_kw: |
+    sb.(self, *t200, **kw)
+  symproc_0_splat_comb_kw: |
+    sb.(*sb_t0, **kw)
+  symproc_1_splat_comb_kw: |
+    sb.(*sb_t1, **kw)
+  symproc_10_splat_comb_kw: |
+    sb.(*sb_t10, **kw)
+  symproc_200_splat_comb_kw: |
+    sb.(*sb_t200, **kw)
+loop_count: 1000000
diff --git a/benchmark/vm_ivar_get.yml b/benchmark/vm_ivar_get.yml
index 9174af6965..1e0dad665f 100644
--- a/benchmark/vm_ivar_get.yml
+++ b/benchmark/vm_ivar_get.yml
@@ -1,17 +1,75 @@
 prelude: |
   class Example
     def initialize
+      @levar = 1
       @v0 = 1
       @v1 = 2
       @v3 = 3
+    end
+
+    def get_value_loop
+      sum = 0
+
+      i = 0
+      while i < 100_000
+        # 10 times to de-emphasize loop overhead
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        i += 1
+      end
+
+      return sum
+    end
+
+    @levar = 1
+    @v0 = 1
+    @v1 = 2
+    @v3 = 3
+
+    def self.get_value_loop
+      sum = 0
+
+      i = 0
+      while i < 100_000
+        # 10 times to de-emphasize loop overhead
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        sum += @levar
+        i += 1
+      end
+
+      return sum
+    end
+  end
+
+  class GenExample < Time
+    def initialize
       @levar = 1
+      @v0 = 1
+      @v1 = 2
+      @v3 = 3
     end
 
     def get_value_loop
       sum = 0
 
       i = 0
-      while i < 1000000
+      while i < 100_000
         # 10 times to de-emphasize loop overhead
         sum += @levar
         sum += @levar
@@ -31,7 +89,12 @@ prelude: |
   end
 
   obj = Example.new
+  gen = GenExample.new
 benchmark:
-  vm_ivar_get: |
+  vm_ivar_get_on_obj: |
     obj.get_value_loop
+  vm_ivar_get_on_class: |
+    Example.get_value_loop
+  vm_ivar_get_on_generic: |
+    gen.get_value_loop
 loop_count: 100
diff --git a/benchmark/vm_ivar_ic_miss.yml b/benchmark/vm_ivar_ic_miss.yml
new file mode 100644
index 0000000000..944fb1a9e6
--- /dev/null
+++ b/benchmark/vm_ivar_ic_miss.yml
@@ -0,0 +1,20 @@
+prelude: |
+  class Foo
+    def initialize diverge
+      if diverge
+        @a = 1
+      end
+
+      @a0 = @a1 = @a2 = @a3 = @a4 = @a5 = @a6 = @a7 = @a8 = @a9 = @a10 = @a11 = @a12 = @a13 = @a14 = @a15 = @a16 = @a17 = @a18 = @a19 = @a20 = @a21 = @a22 = @a23 = @a24 = @a25 = @a26 = @a27 = @a28 = @a29 = @a30 = @a31 = @a32 = @a33 = @a34 = @a35 = @a36 = @a37 = @a38 = @a39 = @a40 = @a41 = @a42 = @a43 = @a44 = @a45 = @a46 = @a47 = @a48 = @a49 = @a50 = @a51 = @a52 = @a53 = @a54 = @a55 = @a56 = @a57 = @a58 = @a59 = @a60 = @a61 = @a62 = @a63 = @a64 = @a65 = @a66 = @a67 = @a68 = @a69 = @a70 = @a71 = @a72 = @a73 = @a74 = @b = 1
+    end
+
+    def b; @b; end
+  end
+
+  a = Foo.new false
+  b = Foo.new true
+benchmark:
+  vm_ivar_ic_miss: |
+    a.b
+    b.b
+loop_count: 30000000
diff --git a/benchmark/vm_ivar_memoize.yml b/benchmark/vm_ivar_memoize.yml
new file mode 100644
index 0000000000..90f6b07f05
--- /dev/null
+++ b/benchmark/vm_ivar_memoize.yml
@@ -0,0 +1,85 @@
+prelude: |
+  IVARS = 60
+  class Record
+    def initialize(offset = false)
+      @offset = 1 if offset
+      @first = 0
+      IVARS.times do |i|
+        instance_variable_set("@ivar_#{i}", i)
+      end
+    end
+
+    def first
+      @first
+    end
+
+    def lazy_set
+      @lazy_set ||= 123
+    end
+
+    def undef
+      @undef
+    end
+  end
+
+  Record.new # Need one alloc to right size
+
+  BASE = Record.new
+  LAZY = Record.new
+  LAZY.lazy_set
+
+  class Miss < Record
+    @first = 0
+    IVARS.times do |i|
+      instance_variable_set("@i_#{i}", i)
+    end
+  end
+
+  Miss.new # Need one alloc to right size
+  MISS = Miss.new
+
+  DIVERGENT = Record.new(true)
+
+benchmark:
+  vm_ivar_stable_shape: |
+    BASE.first
+    BASE.first
+    BASE.first
+    BASE.first
+    BASE.first
+    BASE.first
+  vm_ivar_memoize_unstable_shape: |
+    BASE.first
+    LAZY.first
+    BASE.first
+    LAZY.first
+    BASE.first
+    LAZY.first
+  vm_ivar_memoize_unstable_shape_miss: |
+    BASE.first
+    MISS.first
+    BASE.first
+    MISS.first
+    BASE.first
+    MISS.first
+  vm_ivar_unstable_undef: |
+    BASE.undef
+    LAZY.undef
+    BASE.undef
+    LAZY.undef
+    BASE.undef
+    LAZY.undef
+  vm_ivar_divergent_shape: |
+    BASE.first
+    DIVERGENT.first
+    BASE.first
+    DIVERGENT.first
+    BASE.first
+    DIVERGENT.first
+  vm_ivar_divergent_shape_imbalanced: |
+    BASE.first
+    DIVERGENT.first
+    DIVERGENT.first
+    DIVERGENT.first
+    DIVERGENT.first
+    DIVERGENT.first
diff --git a/benchmark/vm_ivar_set_on_instance.yml b/benchmark/vm_ivar_set_on_instance.yml
index 91857b7742..6ce53a86ec 100644
--- a/benchmark/vm_ivar_set_on_instance.yml
+++ b/benchmark/vm_ivar_set_on_instance.yml
@@ -1,16 +1,44 @@
 prelude: |
   class TheClass
     def initialize
+      @levar = 1
       @v0 = 1
       @v1 = 2
       @v3 = 3
+    end
+
+    def set_value_loop
+      # 100k
+      i = 0
+      while i < 100_000
+        # 10 times to de-emphasize loop overhead
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        i += 1
+      end
+    end
+  end
+
+  class Generic < Time
+    def initialize
       @levar = 1
+      @v0 = 1
+      @v1 = 2
+      @v3 = 3
     end
 
     def set_value_loop
-      # 1M
+      # 100k
       i = 0
-      while i < 1000000
+      while i < 100_000
         # 10 times to de-emphasize loop overhead
         @levar = i
         @levar = i
@@ -28,8 +56,39 @@ prelude: |
   end
 
   obj = TheClass.new
+  gen_obj = Generic.new
+
+  class SomeClass
+    @levar = 1
+    @v0 = 1
+    @v1 = 2
+    @v3 = 3
+
+    def self.set_value_loop
+      # 100k
+      i = 0
+      while i < 100_000
+        # 10 times to de-emphasize loop overhead
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        @levar = i
+        i += 1
+      end
+    end
+  end
 
 benchmark:
   vm_ivar_set_on_instance: |
     obj.set_value_loop
+  vm_ivar_set_on_generic: |
+    gen_obj.set_value_loop
+  vm_ivar_set_on_class: |
+    SomeClass.set_value_loop
 loop_count: 100
diff --git a/benchmark/vm_method_splat_calls.yml b/benchmark/vm_method_splat_calls.yml
new file mode 100644
index 0000000000..f2f366e99c
--- /dev/null
+++ b/benchmark/vm_method_splat_calls.yml
@@ -0,0 +1,13 @@
+prelude: |
+  def f(x=0, y: 0) end
+  a = [1]
+  ea = []
+  kw = {y: 1}
+  b = lambda{}
+benchmark:
+  arg_splat: "f(1, *ea)"
+  arg_splat_block: "f(1, *ea, &b)"
+  splat_kw_splat: "f(*a, **kw)"
+  splat_kw_splat_block: "f(*a, **kw, &b)"
+  splat_kw: "f(*a, y: 1)"
+  splat_kw_block: "f(*a, y: 1, &b)"
diff --git a/benchmark/vm_method_splat_calls2.yml b/benchmark/vm_method_splat_calls2.yml
new file mode 100644
index 0000000000..d33dcd7e8b
--- /dev/null
+++ b/benchmark/vm_method_splat_calls2.yml
@@ -0,0 +1,27 @@
+prelude: |
+  def named_arg_splat(*a) end
+  def named_arg_kw_splat(*a, **kw) end
+  def anon_arg_splat(*) end
+  def anon_kw_splat(**) end
+  def anon_arg_kw_splat(*, **) end
+  def anon_fw_to_named(*, **) named_arg_kw_splat(*, **) end
+  def fw_to_named(...) named_arg_kw_splat(...) end
+  def fw_to_anon_to_named(...) anon_fw_to_named(...) end
+  def fw_no_kw(...) named_arg_splat(...) end
+  a = [1]
+  kw = {y: 1}
+benchmark:
+  named_multi_arg_splat: "named_arg_splat(*a, *a)"
+  named_post_splat: "named_arg_splat(*a, a)"
+  anon_arg_splat: "anon_arg_splat(*a)"
+  anon_arg_kw_splat: "anon_arg_kw_splat(*a, **kw)"
+  anon_multi_arg_splat: "anon_arg_splat(*a, *a)"
+  anon_post_splat: "anon_arg_splat(*a, a)"
+  anon_kw_splat: "anon_kw_splat(**kw)"
+  anon_fw_to_named_splat: "anon_fw_to_named(*a, **kw)"
+  anon_fw_to_named_no_splat: "anon_fw_to_named(1, y: 1)"
+  fw_to_named_splat: "fw_to_named(*a, **kw)"
+  fw_to_named_no_splat: "fw_to_named(1, y: 1)"
+  fw_to_anon_to_named_splat: "fw_to_anon_to_named(*a, **kw)"
+  fw_to_anon_to_named_no_splat: "fw_to_anon_to_named(1, y: 1)"
+  fw_no_kw: "fw_no_kw(1, 2)"
diff --git a/benchmark/vm_send_cfunc.yml b/benchmark/vm_send_cfunc.yml
index b114ac317d..6f12b65176 100644
--- a/benchmark/vm_send_cfunc.yml
+++ b/benchmark/vm_send_cfunc.yml
@@ -1,3 +1,14 @@
+prelude: |
+  ary = []
+  kw = {a: 1}
+  empty_kw = {}
+  kw_ary = [Hash.ruby2_keywords_hash(a: 1)]
+  empty_kw_ary = [Hash.ruby2_keywords_hash({})]
 benchmark:
-  vm_send_cfunc: self.class
-loop_count: 100000000
+  vm_send_cfunc: itself
+  vm_send_cfunc_splat: itself(*ary)
+  vm_send_cfunc_splat_kw_hash: equal?(*kw_ary)
+  vm_send_cfunc_splat_empty_kw_hash: itself(*empty_kw_ary)
+  vm_send_cfunc_splat_kw: equal?(*ary, **kw)
+  vm_send_cfunc_splat_empty_kw: itself(*ary, **empty_kw)
+loop_count: 20000000
diff --git a/benchmark/vm_super_splat_calls.yml b/benchmark/vm_super_splat_calls.yml
new file mode 100644
index 0000000000..795e44e4da
--- /dev/null
+++ b/benchmark/vm_super_splat_calls.yml
@@ -0,0 +1,25 @@
+prelude: |
+  @a = [1].freeze
+  @ea = [].freeze
+  @kw = {y: 1}.freeze
+  @b = lambda{}
+  extend(Module.new{def arg_splat(x=0, y: 0) end})
+  extend(Module.new{def arg_splat_block(x=0, y: 0) end})
+  extend(Module.new{def splat_kw_splat(x=0, y: 0) end})
+  extend(Module.new{def splat_kw_splat_block(x=0, y: 0) end})
+  extend(Module.new{def splat_kw(x=0, y: 0) end})
+  extend(Module.new{def splat_kw_block(x=0, y: 0) end})
+
+  extend(Module.new{def arg_splat; super(1, *@ea) end})
+  extend(Module.new{def arg_splat_block; super(1, *@ea, &@b) end})
+  extend(Module.new{def splat_kw_splat; super(*@a, **@kw) end})
+  extend(Module.new{def splat_kw_splat_block; super(*@a, **@kw, &@b) end})
+  extend(Module.new{def splat_kw; super(*@a, y: 1) end})
+  extend(Module.new{def splat_kw_block; super(*@a, y: 1, &@b) end})
+benchmark:
+  arg_splat: "arg_splat"
+  arg_splat_block: "arg_splat_block"
+  splat_kw_splat: "splat_kw_splat"
+  splat_kw_splat_block: "splat_kw_splat_block"
+  splat_kw: "splat_kw"
+  splat_kw_block: "splat_kw_block"
diff --git a/benchmark/vm_zsuper_splat_calls.yml b/benchmark/vm_zsuper_splat_calls.yml
new file mode 100644
index 0000000000..82dc22349d
--- /dev/null
+++ b/benchmark/vm_zsuper_splat_calls.yml
@@ -0,0 +1,28 @@
+prelude: |
+  a = [1].freeze
+  ea = [].freeze
+  kw = {y: 1}.freeze
+  b = lambda{}
+  extend(Module.new{def arg_splat(x=0, y: 0) end})
+  extend(Module.new{def arg_splat_block(x=0, y: 0) end})
+  extend(Module.new{def arg_splat_post(x=0, y: 0) end})
+  extend(Module.new{def splat_kw_splat(x=0, y: 0) end})
+  extend(Module.new{def splat_kw_splat_block(x=0, y: 0) end})
+  extend(Module.new{def splat_kw(x=0, y: 0) end})
+  extend(Module.new{def splat_kw_block(x=0, y: 0) end})
+
+  extend(Module.new{def arg_splat(x, *a) super end})
+  extend(Module.new{def arg_splat_block(x, *a, &b) super end})
+  extend(Module.new{def arg_splat_post(*a, x) super end})
+  extend(Module.new{def splat_kw_splat(*a, **kw) super end})
+  extend(Module.new{def splat_kw_splat_block(*a, **kw, &b) super end})
+  extend(Module.new{def splat_kw(*a, y: 1) super end})
+  extend(Module.new{def splat_kw_block(*a, y: 1, &b) super end})
+benchmark:
+  arg_splat: "arg_splat(1, *ea)"
+  arg_splat_block: "arg_splat_block(1, *ea, &b)"
+  arg_splat_post: "arg_splat_post(1, *ea, &b)"
+  splat_kw_splat: "splat_kw_splat(*a, **kw)"
+  splat_kw_splat_block: "splat_kw_splat_block(*a, **kw, &b)"
+  splat_kw: "splat_kw(*a, y: 1)"
+  splat_kw_block: "splat_kw_block(*a, y: 1, &b)"
diff --git a/bignum.c b/bignum.c
index 4f8349dd17..ee2fa1ed30 100644
--- a/bignum.c
+++ b/bignum.c
@@ -30,9 +30,6 @@
 # define USE_GMP 0
 #endif
 #endif
-#if USE_GMP
-# include <gmp.h>
-#endif
 
 #include "id.h"
 #include "internal.h"
@@ -48,6 +45,23 @@
 #include "ruby/util.h"
 #include "ruby_assert.h"
 
+#if USE_GMP
+RBIMPL_WARNING_PUSH()
+# ifdef _MSC_VER
+RBIMPL_WARNING_IGNORED(4146) /* for mpn_neg() */
+# endif
+# include <gmp.h>
+RBIMPL_WARNING_POP()
+#endif
+
+static const bool debug_integer_pack = (
+#ifdef DEBUG_INTEGER_PACK
+    DEBUG_INTEGER_PACK+0
+#else
+    RUBY_DEBUG
+#endif
+    ) != 0;
+
 const char ruby_digitmap[] = "0123456789abcdefghijklmnopqrstuvwxyz";
 
 #ifndef SIZEOF_BDIGIT_DBL
@@ -65,7 +79,6 @@ 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);
@@ -341,7 +354,7 @@ maxpow_in_bdigit_dbl(int base, int *exp_ret)
     BDIGIT_DBL maxpow;
     int exponent;
 
-    assert(2 <= base && base <= 36);
+    RUBY_ASSERT(2 <= base && base <= 36);
 
     {
 #if SIZEOF_BDIGIT_DBL == 2
@@ -373,7 +386,7 @@ maxpow_in_bdigit_dbl(int base, int *exp_ret)
 static inline BDIGIT_DBL
 bary2bdigitdbl(const BDIGIT *ds, size_t n)
 {
-    assert(n <= 2);
+    RUBY_ASSERT(n <= 2);
 
     if (n == 2)
         return ds[0] | BIGUP(ds[1]);
@@ -385,7 +398,7 @@ bary2bdigitdbl(const BDIGIT *ds, size_t n)
 static inline void
 bdigitdbl2bary(BDIGIT *ds, size_t n, BDIGIT_DBL num)
 {
-    assert(n == 2);
+    RUBY_ASSERT(n == 2);
 
     ds[0] = BIGLO(num);
     ds[1] = (BDIGIT)BIGDN(num);
@@ -416,7 +429,7 @@ 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);
+    RUBY_ASSERT(0 <= shift && shift < BITSPERDIG);
 
     for (i=0; i<n; i++) {
         num = num | (BDIGIT_DBL)*xds++ << shift;
@@ -432,7 +445,7 @@ bary_small_rshift(BDIGIT *zds, const BDIGIT *xds, size_t n, int shift, BDIGIT hi
     size_t i;
     BDIGIT_DBL num = 0;
 
-    assert(0 <= shift && shift < BITSPERDIG);
+    RUBY_ASSERT(0 <= shift && shift < BITSPERDIG);
 
     num = BIGUP(higher_bdigit);
     for (i = 0; i < n; i++) {
@@ -1049,15 +1062,13 @@ integer_unpack_num_bdigits(size_t numwords, size_t wordsize, size_t nails, int *
 
     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
-        {
+        if (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);
+            RUBY_ASSERT(num_bdigits == num_bdigits1);
+            RUBY_ASSERT(*nlp_bits_ret == nlp_bits1);
             (void)num_bdigits1;
         }
-#endif
     }
     else {
         num_bdigits = integer_unpack_num_bdigits_generic(numwords, wordsize, nails, nlp_bits_ret);
@@ -1265,7 +1276,7 @@ bary_unpack_internal(BDIGIT *bdigits, size_t num_bdigits, const void *words, siz
         }
         if (dd)
             *dp++ = (BDIGIT)dd;
-        assert(dp <= de);
+        RUBY_ASSERT(dp <= de);
         while (dp < de)
             *dp++ = 0;
 #undef PUSH_BITS
@@ -1324,7 +1335,7 @@ bary_unpack(BDIGIT *bdigits, size_t num_bdigits, const void *words, size_t numwo
 
     num_bdigits0 = integer_unpack_num_bdigits(numwords, wordsize, nails, &nlp_bits);
 
-    assert(num_bdigits0 <= num_bdigits);
+    RUBY_ASSERT(num_bdigits0 <= num_bdigits);
 
     sign = bary_unpack_internal(bdigits, num_bdigits0, words, numwords, wordsize, nails, flags, nlp_bits);
 
@@ -1343,8 +1354,8 @@ bary_subb(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yd
     size_t i;
     size_t sn;
 
-    assert(xn <= zn);
-    assert(yn <= zn);
+    RUBY_ASSERT(xn <= zn);
+    RUBY_ASSERT(yn <= zn);
 
     sn = xn < yn ? xn : yn;
 
@@ -1405,8 +1416,8 @@ bary_addc(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT *yd
     BDIGIT_DBL num;
     size_t i;
 
-    assert(xn <= zn);
-    assert(yn <= zn);
+    RUBY_ASSERT(xn <= zn);
+    RUBY_ASSERT(yn <= zn);
 
     if (xn > yn) {
         const BDIGIT *tds;
@@ -1470,7 +1481,7 @@ bary_mul_single(BDIGIT *zds, size_t zn, BDIGIT x, BDIGIT y)
 {
     BDIGIT_DBL n;
 
-    assert(2 <= zn);
+    RUBY_ASSERT(2 <= zn);
 
     n = (BDIGIT_DBL)x * y;
     bdigitdbl2bary(zds, 2, n);
@@ -1484,7 +1495,7 @@ bary_muladd_1xN(BDIGIT *zds, size_t zn, BDIGIT x, const BDIGIT *yds, size_t yn)
     BDIGIT_DBL dd;
     size_t j;
 
-    assert(zn > yn);
+    RUBY_ASSERT(zn > yn);
 
     if (x == 0)
         return 0;
@@ -1519,7 +1530,7 @@ bigdivrem_mulsub(BDIGIT *zds, size_t zn, BDIGIT x, const BDIGIT *yds, size_t yn)
     BDIGIT_DBL t2;
     BDIGIT_DBL_SIGNED num;
 
-    assert(zn == yn + 1);
+    RUBY_ASSERT(zn == yn + 1);
 
     num = 0;
     t2 = 0;
@@ -1544,7 +1555,7 @@ bary_mulsub_1xN(BDIGIT *zds, size_t zn, BDIGIT x, const BDIGIT *yds, size_t yn)
 {
     BDIGIT_DBL_SIGNED num;
 
-    assert(zn == yn + 1);
+    RUBY_ASSERT(zn == yn + 1);
 
     num = bigdivrem_mulsub(zds, zn, x, yds, yn);
     zds[yn] = BIGLO(num);
@@ -1558,7 +1569,7 @@ bary_mul_normal(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIG
 {
     size_t i;
 
-    assert(xn + yn <= zn);
+    RUBY_ASSERT(xn + yn <= zn);
 
     BDIGITS_ZERO(zds, zn);
     for (i = 0; i < xn; i++) {
@@ -1589,7 +1600,7 @@ bary_sq_fast(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn)
     BDIGIT vl;
     int vh;
 
-    assert(xn * 2 <= zn);
+    RUBY_ASSERT(xn * 2 <= zn);
 
     BDIGITS_ZERO(zds, zn);
 
@@ -1661,9 +1672,9 @@ bary_mul_balance_with_mulfunc(BDIGIT *const zds, const size_t zn,
     VALUE work = 0;
     size_t n;
 
-    assert(xn + yn <= zn);
-    assert(xn <= yn);
-    assert(!KARATSUBA_BALANCED(xn, yn) || !TOOM3_BALANCED(xn, yn));
+    RUBY_ASSERT(xn + yn <= zn);
+    RUBY_ASSERT(xn <= yn);
+    RUBY_ASSERT(!KARATSUBA_BALANCED(xn, yn) || !TOOM3_BALANCED(xn, yn));
 
     BDIGITS_ZERO(zds, xn);
 
@@ -1745,9 +1756,9 @@ bary_mul_karatsuba(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const B
     const BDIGIT *xds0, *xds1, *yds0, *yds1;
     BDIGIT *zds0, *zds1, *zds2, *zds3;
 
-    assert(xn + yn <= zn);
-    assert(xn <= yn);
-    assert(yn < 2 * xn);
+    RUBY_ASSERT(xn + yn <= zn);
+    RUBY_ASSERT(xn <= yn);
+    RUBY_ASSERT(yn < 2 * xn);
 
     sq = xds == yds && xn == yn;
 
@@ -1762,7 +1773,7 @@ bary_mul_karatsuba(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const B
 
     n = yn / 2;
 
-    assert(n < xn);
+    RUBY_ASSERT(n < xn);
 
     if (wn < n) {
         /* This function itself needs only n BDIGITs for work area.
@@ -1883,7 +1894,7 @@ bary_mul_karatsuba(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const B
         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);
+        RUBY_ASSERT(z == x * y);
     }
     */
 
@@ -1951,11 +1962,11 @@ bary_mul_toom3(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGI
 
     int sq = xds == yds && xn == yn;
 
-    assert(xn <= yn);  /* assume y >= x */
-    assert(xn + yn <= zn);
+    RUBY_ASSERT(xn <= yn);  /* assume y >= x */
+    RUBY_ASSERT(xn + yn <= zn);
 
     n = (yn + 2) / 3;
-    assert(2*n < xn);
+    RUBY_ASSERT(2*n < xn);
 
     wnc = 0;
 
@@ -2142,19 +2153,19 @@ bary_mul_toom3(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGI
     /* 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);
+    RUBY_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);
+    RUBY_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);
+    RUBY_ASSERT(t3ds[t3n-1] == 0);
     t3n--;
 
     /* z(inf) : t4 <- x2 * y2 */
@@ -2330,7 +2341,7 @@ bary_mul_gmp(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, const BDIGIT
     mpz_t x, y, z;
     size_t count;
 
-    assert(xn + yn <= zn);
+    RUBY_ASSERT(xn + yn <= zn);
 
     mpz_init(x);
     mpz_init(y);
@@ -2365,7 +2376,7 @@ rb_big_mul_gmp(VALUE x, VALUE y)
 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);
+    RUBY_ASSERT(xn + yn <= zn);
 
     if (xn == 1 && yn == 1) {
         bary_mul_single(zds, zn, xds[0], yds[0]);
@@ -2401,7 +2412,7 @@ bary_mul_precheck(BDIGIT **zdsp, size_t *znp, const BDIGIT **xdsp, size_t *xnp,
     const BDIGIT *yds = *ydsp;
     size_t yn = *ynp;
 
-    assert(xn + yn <= zn);
+    RUBY_ASSERT(xn + yn <= zn);
 
     nlsz = 0;
 
@@ -2450,7 +2461,7 @@ bary_mul_precheck(BDIGIT **zdsp, size_t *znp, const BDIGIT **xdsp, size_t *xnp,
         tds = xds; xds = yds; yds = tds;
         tn = xn; xn = yn; yn = tn;
     }
-    assert(xn <= yn);
+    RUBY_ASSERT(xn <= yn);
 
     if (xn <= 1) {
         if (xn == 0) {
@@ -2633,8 +2644,8 @@ rb_big_stop(void *ptr)
 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);
+    RUBY_ASSERT(0 < xn);
+    RUBY_ASSERT(x_higher_bdigit < y);
     if (POW2_P(y)) {
         BDIGIT r;
         r = xds[0] & (y-1);
@@ -2666,9 +2677,9 @@ 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]);
+    RUBY_ASSERT(yn < zn);
+    RUBY_ASSERT(BDIGIT_MSB(yds[yn-1]));
+    RUBY_ASSERT(zds[zn-1] < yds[yn-1]);
 
     for (ynzero = 0; !yds[ynzero]; ynzero++);
 
@@ -2687,7 +2698,7 @@ bigdivrem_restoring(BDIGIT *zds, size_t zn, BDIGIT *yds, size_t yn)
     if (bds.zn > 10000 || bds.yn > 10000) {
       retry:
         bds.stop = Qfalse;
-        rb_nogvl(bigdivrem1, &bds, rb_big_stop, &bds, RB_NOGVL_UBF_ASYNC_SAFE);
+        rb_nogvl(bigdivrem1, &bds, rb_big_stop, &bds, RB_NOGVL_UBF_ASYNC_SAFE | RB_NOGVL_OFFLOAD_SAFE);
 
         if (bds.stop == Qtrue) {
             /* execute trap handler, but exception was not raised. */
@@ -2707,9 +2718,9 @@ bary_divmod_normal(BDIGIT *qds, size_t qn, BDIGIT *rds, size_t rn, const BDIGIT
     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);
+    RUBY_ASSERT(yn < xn || (xn == yn && yds[yn - 1] <= xds[xn - 1]));
+    RUBY_ASSERT(qds ? (xn - yn + 1) <= qn : 1);
+    RUBY_ASSERT(rds ? yn <= rn : 1);
 
     zn = xn + BIGDIVREM_EXTRA_WORDS;
 
@@ -2801,10 +2812,10 @@ bary_divmod_gmp(BDIGIT *qds, size_t qn, BDIGIT *rds, size_t rn, const BDIGIT *xd
     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);
+    RUBY_ASSERT(yn < xn || (xn == yn && yds[yn - 1] <= xds[xn - 1]));
+    RUBY_ASSERT(qds ? (xn - yn + 1) <= qn : 1);
+    RUBY_ASSERT(rds ? yn <= rn : 1);
+    RUBY_ASSERT(qds || rds);
 
     mpz_init(x);
     mpz_init(y);
@@ -2890,8 +2901,8 @@ bary_divmod_branch(BDIGIT *qds, size_t qn, BDIGIT *rds, size_t rn, const BDIGIT
 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);
+    RUBY_ASSERT(xn <= qn);
+    RUBY_ASSERT(yn <= rn);
 
     BARY_TRUNC(yds, yn);
     if (yn == 0)
@@ -2978,25 +2989,56 @@ rb_cmpint(VALUE val, VALUE a, VALUE b)
             ((l) << BIGNUM_EMBED_LEN_SHIFT)) : \
      (void)(RBIGNUM(b)->as.heap.len = (l)))
 
+static size_t
+big_embed_capa(VALUE big)
+{
+    size_t size = rb_gc_obj_slot_size(big) - offsetof(struct RBignum, as.ary);
+    RUBY_ASSERT(size % sizeof(BDIGIT) == 0);
+    size_t capa = size / sizeof(BDIGIT);
+    RUBY_ASSERT(capa <= BIGNUM_EMBED_LEN_MAX);
+    return capa;
+}
+
+static size_t
+big_embed_size(size_t capa)
+{
+    size_t size = offsetof(struct RBignum, as.ary) + (sizeof(BDIGIT) * capa);
+    if (size < sizeof(struct RBignum)) {
+        size = sizeof(struct RBignum);
+    }
+    return size;
+}
+
+static bool
+big_embeddable_p(size_t capa)
+{
+    if (capa > BIGNUM_EMBED_LEN_MAX) {
+        return false;
+    }
+    return rb_gc_size_allocatable_p(big_embed_size(capa));
+}
+
 static void
 rb_big_realloc(VALUE big, size_t len)
 {
     BDIGIT *ds;
+    size_t embed_capa = big_embed_capa(big);
+
     if (BIGNUM_EMBED_P(big)) {
-        if (BIGNUM_EMBED_LEN_MAX < len) {
+        if (embed_capa < len) {
             ds = ALLOC_N(BDIGIT, len);
-            MEMCPY(ds, RBIGNUM(big)->as.ary, BDIGIT, BIGNUM_EMBED_LEN_MAX);
+            MEMCPY(ds, RBIGNUM(big)->as.ary, BDIGIT, embed_capa);
             RBIGNUM(big)->as.heap.len = BIGNUM_LEN(big);
             RBIGNUM(big)->as.heap.digits = ds;
             FL_UNSET_RAW(big, BIGNUM_EMBED_FLAG);
         }
     }
     else {
-        if (len <= BIGNUM_EMBED_LEN_MAX) {
+        if (len <= embed_capa) {
             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));
+            (void)VALGRIND_MAKE_MEM_UNDEFINED((void*)RBIGNUM(big)->as.ary, embed_capa * sizeof(BDIGIT));
             if (ds) {
                 MEMCPY(RBIGNUM(big)->as.ary, ds, BDIGIT, len);
                 xfree(ds);
@@ -3006,7 +3048,7 @@ rb_big_realloc(VALUE big, size_t len)
             if (BIGNUM_LEN(big) == 0) {
                 RBIGNUM(big)->as.heap.digits = ALLOC_N(BDIGIT, len);
             }
-            else {
+            else if (BIGNUM_LEN(big) < len) {
                 REALLOC_N(RBIGNUM(big)->as.heap.digits, BDIGIT, len);
             }
         }
@@ -3023,15 +3065,24 @@ rb_big_resize(VALUE big, size_t 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);
+    VALUE bigv;
+
+    if (big_embeddable_p(len)) {
+        size_t size = big_embed_size(len);
+        RUBY_ASSERT(rb_gc_size_allocatable_p(size));
+        NEWOBJ_OF(big, struct RBignum, klass,
+                T_BIGNUM | BIGNUM_EMBED_FLAG | (RGENGC_WB_PROTECTED_BIGNUM ? FL_WB_PROTECTED : 0),
+                size, 0);
+        bigv = (VALUE)big;
+        BIGNUM_SET_SIGN(bigv, sign);
         BIGNUM_SET_LEN(bigv, len);
-        (void)VALGRIND_MAKE_MEM_UNDEFINED((void*)big->as.ary, sizeof(big->as.ary));
+        (void)VALGRIND_MAKE_MEM_UNDEFINED((void*)big->as.ary, len * sizeof(BDIGIT));
     }
     else {
+        NEWOBJ_OF(big, struct RBignum, klass,
+                T_BIGNUM | (RGENGC_WB_PROTECTED_BIGNUM ? FL_WB_PROTECTED : 0), sizeof(struct RBignum), 0);
+        bigv = (VALUE)big;
+        BIGNUM_SET_SIGN(bigv, sign);
         big->as.heap.digits = ALLOC_N(BDIGIT, len);
         big->as.heap.len = len;
     }
@@ -3042,7 +3093,9 @@ bignew_1(VALUE klass, size_t len, int sign)
 VALUE
 rb_big_new(size_t len, int sign)
 {
-    return bignew(len, sign != 0);
+    VALUE obj = bignew(len, sign != 0);
+    memset(BIGNUM_DIGITS(obj), 0, len * sizeof(BDIGIT));
+    return obj;
 }
 
 VALUE
@@ -3422,15 +3475,13 @@ rb_absint_numwords(VALUE val, size_t word_numbits, size_t *nlz_bits_ret)
 
     if (numbytes <= SIZE_MAX / CHAR_BIT) {
         numwords = absint_numwords_small(numbytes, nlz_bits_in_msbyte, word_numbits, &nlz_bits);
-#ifdef DEBUG_INTEGER_PACK
-        {
+        if (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);
+            RUBY_ASSERT(numwords0 == numwords);
+            RUBY_ASSERT(nlz_bits0 == nlz_bits);
             (void)numwords0;
         }
-#endif
     }
     else {
         numwords = absint_numwords_generic(numbytes, nlz_bits_in_msbyte, word_numbits, &nlz_bits);
@@ -3843,7 +3894,7 @@ str2big_poweroftwo(
     if (numbits) {
         *dp++ = BIGLO(dd);
     }
-    assert((size_t)(dp - BDIGITS(z)) == num_bdigits);
+    RUBY_ASSERT((size_t)(dp - BDIGITS(z)) == num_bdigits);
 
     return z;
 }
@@ -3886,7 +3937,7 @@ str2big_normal(
             }
             break;
         }
-        assert(blen <= num_bdigits);
+        RUBY_ASSERT(blen <= num_bdigits);
     }
 
     return z;
@@ -3944,7 +3995,7 @@ str2big_karatsuba(
             current_base = 1;
         }
     }
-    assert(i == num_bdigits);
+    RUBY_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) {
@@ -4089,8 +4140,8 @@ rb_int_parse_cstr(const char *str, ssize_t len, char **endp, size_t *ndigits,
         len -= (n); \
     } while (0)
 #define ASSERT_LEN() do {\
-        assert(len != 0); \
-        if (len0 >= 0) assert(s + len0 == str + len); \
+        RUBY_ASSERT(len != 0); \
+        if (len0 >= 0) RUBY_ASSERT(s + len0 == str + len); \
     } while (0)
 
     if (!str) {
@@ -4184,7 +4235,6 @@ rb_int_parse_cstr(const char *str, ssize_t len, char **endp, size_t *ndigits,
         }
         if (!c || ISSPACE(c)) --str;
         if (end) len = end - str;
-        ASSERT_LEN();
     }
     c = *str;
     c = conv_digit(c);
@@ -4465,7 +4515,7 @@ rb_str2big_gmp(VALUE arg, int base, int badcheck)
 
 #if HAVE_LONG_LONG
 
-static VALUE
+VALUE
 rb_ull2big(unsigned LONG_LONG n)
 {
     long i;
@@ -4487,7 +4537,7 @@ rb_ull2big(unsigned LONG_LONG n)
     return big;
 }
 
-static VALUE
+VALUE
 rb_ll2big(LONG_LONG n)
 {
     long neg = 0;
@@ -4525,7 +4575,7 @@ rb_ll2inum(LONG_LONG n)
 #endif  /* HAVE_LONG_LONG */
 
 #ifdef HAVE_INT128_T
-static VALUE
+VALUE
 rb_uint128t2big(uint128_t n)
 {
     long i;
@@ -4542,7 +4592,7 @@ rb_uint128t2big(uint128_t n)
     return big;
 }
 
-MJIT_FUNC_EXPORTED VALUE
+VALUE
 rb_int128t2big(int128_t n)
 {
     int neg = 0;
@@ -4587,11 +4637,14 @@ big_shift3(VALUE x, int lshift_p, size_t shift_numdigits, int shift_numbits)
 
     if (lshift_p) {
         if (LONG_MAX < shift_numdigits) {
-            rb_raise(rb_eArgError, "too big number");
+          too_big:
+            rb_raise(rb_eRangeError, "shift width too big");
         }
         s1 = shift_numdigits;
         s2 = shift_numbits;
+        if ((size_t)s1 != shift_numdigits) goto too_big;
         xn = BIGNUM_LEN(x);
+        if (LONG_MAX/SIZEOF_BDIGIT <= xn+s1) goto too_big;
         z = bignew(xn+s1+1, BIGNUM_SIGN(x));
         zds = BDIGITS(z);
         BDIGITS_ZERO(zds, s1);
@@ -4633,8 +4686,8 @@ big_shift2(VALUE x, int lshift_p, VALUE y)
     size_t shift_numdigits;
     int shift_numbits;
 
-    assert(POW2_P(CHAR_BIT));
-    assert(POW2_P(BITSPERDIG));
+    RUBY_ASSERT(POW2_P(CHAR_BIT));
+    RUBY_ASSERT(POW2_P(BITSPERDIG));
 
     if (BIGZEROP(x))
         return INT2FIX(0);
@@ -4721,7 +4774,7 @@ power_cache_get_power(int base, int power_level, size_t *numdigits_ret)
         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);
+        rb_vm_register_global_object(power);
     }
     if (numdigits_ret)
         *numdigits_ret = base36_numdigits_cache[base - 2][power_level];
@@ -4757,7 +4810,7 @@ big2str_2bdigits(struct big2str_struct *b2s, BDIGIT *xds, size_t xn, size_t tail
     int beginning = !b2s->ptr;
     size_t len = 0;
 
-    assert(xn <= 2);
+    RUBY_ASSERT(xn <= 2);
     num = bary2bdigitdbl(xds, xn);
 
     if (beginning) {
@@ -4885,7 +4938,7 @@ big2str_karatsuba(struct big2str_struct *b2s, BDIGIT *xds, size_t xn, size_t wn,
             /* bigdivrem_restoring will modify y.
              * So use temporary buffer.  */
             tds = xds + qn;
-            assert(qn + bn <= xn + wn);
+            RUBY_ASSERT(qn + bn <= xn + wn);
             bary_small_lshift(tds, bds, bn, shift);
             xds[xn] = bary_small_lshift(xds, xds, xn, shift);
         }
@@ -4903,7 +4956,7 @@ big2str_karatsuba(struct big2str_struct *b2s, BDIGIT *xds, size_t xn, size_t wn,
         }
 
         BARY_TRUNC(qds, qn);
-        assert(qn <= bn);
+        RUBY_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);
@@ -4968,7 +5021,7 @@ big2str_generic(VALUE x, int base)
         invalid_radix(base);
 
     if (xn >= LONG_MAX/BITSPERDIG) {
-        rb_raise(rb_eRangeError, "bignum too big to convert into `string'");
+        rb_raise(rb_eRangeError, "bignum too big to convert into 'string'");
     }
 
     power_level = 0;
@@ -4978,7 +5031,7 @@ big2str_generic(VALUE x, int base)
         power_level++;
         power = power_cache_get_power(base, power_level, NULL);
     }
-    assert(power_level != MAX_BASE36_POWER_TABLE_ENTRIES);
+    RUBY_ASSERT(power_level != MAX_BASE36_POWER_TABLE_ENTRIES);
 
     if ((size_t)BIGNUM_LEN(power) <= xn) {
         /*
@@ -5093,7 +5146,7 @@ rb_big2str1(VALUE x, int base)
         invalid_radix(base);
 
     if (xn >= LONG_MAX/BITSPERDIG) {
-        rb_raise(rb_eRangeError, "bignum too big to convert into `string'");
+        rb_raise(rb_eRangeError, "bignum too big to convert into 'string'");
     }
 
     if (POW2_P(base)) {
@@ -5129,7 +5182,7 @@ big2ulong(VALUE x, const char *type)
     if (len == 0)
         return 0;
     if (BIGSIZE(x) > sizeof(long)) {
-        rb_raise(rb_eRangeError, "bignum too big to convert into `%s'", type);
+        rb_raise(rb_eRangeError, "bignum too big to convert into '%s'", type);
     }
     ds = BDIGITS(x);
 #if SIZEOF_LONG <= SIZEOF_BDIGIT
@@ -5172,7 +5225,7 @@ rb_big2long(VALUE x)
         if (num <= 1+(unsigned long)(-(LONG_MIN+1)))
             return -(long)(num-1)-1;
     }
-    rb_raise(rb_eRangeError, "bignum too big to convert into `long'");
+    rb_raise(rb_eRangeError, "bignum too big to convert into 'long'");
 }
 
 #if HAVE_LONG_LONG
@@ -5190,7 +5243,7 @@ big2ull(VALUE x, const char *type)
     if (len == 0)
         return 0;
     if (BIGSIZE(x) > SIZEOF_LONG_LONG)
-        rb_raise(rb_eRangeError, "bignum too big to convert into `%s'", type);
+        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
@@ -5231,7 +5284,7 @@ rb_big2ll(VALUE x)
         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'");
+    rb_raise(rb_eRangeError, "bignum too big to convert into 'long long'");
 }
 
 #endif  /* HAVE_LONG_LONG */
@@ -5494,10 +5547,10 @@ big_op(VALUE x, VALUE y, enum big_op_t op)
     n = FIX2INT(rel);
 
     switch (op) {
-        case big_op_gt: return RBOOL(n >  0);
-        case big_op_ge: return RBOOL(n >= 0);
-        case big_op_lt: return RBOOL(n <  0);
-        case big_op_le: return RBOOL(n <= 0);
+      case big_op_gt: return RBOOL(n >  0);
+      case big_op_ge: return RBOOL(n >= 0);
+      case big_op_lt: return RBOOL(n <  0);
+      case big_op_le: return RBOOL(n <= 0);
     }
     return Qundef;
 }
@@ -5653,7 +5706,7 @@ bigsub_int(VALUE x, long y0)
     zds = BDIGITS(z);
 
 #if SIZEOF_BDIGIT >= SIZEOF_LONG
-    assert(xn == zn);
+    RUBY_ASSERT(xn == zn);
     num = (BDIGIT_DBL_SIGNED)xds[0] - y;
     if (xn == 1 && num < 0) {
         BIGNUM_NEGATE(z);
@@ -5716,7 +5769,7 @@ bigsub_int(VALUE x, long y0)
     goto finish;
 
   finish:
-    assert(num == 0 || num == -1);
+    RUBY_ASSERT(num == 0 || num == -1);
     if (num < 0) {
         get2comp(z);
         BIGNUM_NEGATE(z);
@@ -5901,6 +5954,8 @@ bigsq(VALUE x)
     BDIGIT *xds, *zds;
 
     xn = BIGNUM_LEN(x);
+    if (MUL_OVERFLOW_LONG_P(2, xn))
+        rb_raise(rb_eArgError, "square overflow");
     zn = 2 * xn;
 
     z = bignew(zn, 1);
@@ -5929,6 +5984,8 @@ bigmul0(VALUE x, VALUE y)
 
     xn = BIGNUM_LEN(x);
     yn = BIGNUM_LEN(y);
+    if (ADD_OVERFLOW_LONG_P(xn, yn))
+        rb_raise(rb_eArgError, "multiplication overflow");
     zn = xn + yn;
 
     z = bignew(zn, BIGNUM_SIGN(x)==BIGNUM_SIGN(y));
@@ -6274,8 +6331,7 @@ rb_big_pow(VALUE x, VALUE y)
         y = bignorm(y);
         if (FIXNUM_P(y))
             goto again;
-        rb_warn("in a**b, b may be too big");
-        d = rb_big2dbl(y);
+        rb_raise(rb_eArgError, "exponent is too large");
     }
     else if (FIXNUM_P(y)) {
         yy = FIX2LONG(y);
@@ -6291,13 +6347,17 @@ rb_big_pow(VALUE x, VALUE y)
             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 SIZEOF_SIZE_T == 4
+            const size_t BIGLEN_LIMIT = 1ULL << 31; // 2 GB
+#else // SIZEOF_SIZE_T == 8
+            const size_t BIGLEN_LIMIT = 1ULL << 34; // 16 GB
+#endif
 
             if (xbits == (size_t)-1 ||
                 (xbits > BIGLEN_LIMIT) ||
+                MUL_OVERFLOW_LONG_P(yy, xbits) ||
                 (xbits * yy > BIGLEN_LIMIT)) {
-                rb_warn("in a**b, b may be too big");
-                d = (double)yy;
+                rb_raise(rb_eArgError, "exponent is too large");
             }
             else {
                 for (mask = FIXNUM_MAX + 1; mask; mask >>= 1) {
@@ -6326,7 +6386,7 @@ bigand_int(VALUE x, long xn, BDIGIT hibitsx, long y)
     BDIGIT hibitsy;
 
     if (y == 0) return INT2FIX(0);
-    if (xn == 0) return hibitsx ? LONG2NUM(y) : 0;
+    if (xn == 0) return hibitsx ? LONG2NUM(y) : INT2FIX(0);
     hibitsy = 0 <= y ? 0 : BDIGMAX;
     xds = BDIGITS(x);
 #if SIZEOF_BDIGIT >= SIZEOF_LONG
@@ -6738,6 +6798,73 @@ rb_big_aref(VALUE x, VALUE y)
 }
 
 VALUE
+rb_big_aref2(VALUE x, VALUE beg, VALUE len)
+{
+    BDIGIT *xds, *vds;
+    VALUE v;
+    size_t copy_begin, xn, shift;
+    ssize_t begin, length, end;
+    bool negative_add_one;
+
+    beg = rb_to_int(beg);
+    len = rb_to_int(len);
+    length = NUM2SSIZET(len);
+    begin = NUM2SSIZET(beg);
+    end = NUM2SSIZET(rb_int_plus(beg, len));
+    shift = begin < 0 ? -begin : 0;
+    xn = BIGNUM_LEN(x);
+    xds = BDIGITS(x);
+
+    if (length < 0) return rb_big_rshift(x, beg);
+    if (length == 0 || end <= 0) return INT2FIX(0);
+    if (begin < 0) begin = 0;
+
+    if ((size_t)(end - 1) / BITSPERDIG >= xn) {
+        /* end > xn * BITSPERDIG */
+        end = xn * BITSPERDIG;
+    }
+
+    if ((size_t)begin / BITSPERDIG < xn) {
+        /* begin < xn * BITSPERDIG */
+        size_t shift_bits, copy_end;
+        copy_begin = begin / BITSPERDIG;
+        shift_bits = begin % BITSPERDIG;
+        copy_end = (end - 1) / BITSPERDIG + 1;
+        v = bignew(copy_end - copy_begin, 1);
+        vds = BDIGITS(v);
+        MEMCPY(vds, xds + copy_begin, BDIGIT, copy_end - copy_begin);
+        negative_add_one = (vds[0] & ((1 << shift_bits) - 1)) == 0;
+        v = bignorm(v);
+        if (shift_bits) v = rb_int_rshift(v, SIZET2NUM(shift_bits));
+    }
+    else {
+        /* Out of range */
+        v = INT2FIX(0);
+        negative_add_one = false;
+        copy_begin = begin = end = 0;
+    }
+
+    if (BIGNUM_NEGATIVE_P(x)) {
+        size_t mask_size = length - shift;
+        VALUE mask = rb_int_minus(rb_int_lshift(INT2FIX(1), SIZET2NUM(mask_size)), INT2FIX(1));
+        v = rb_int_xor(v, mask);
+        for (size_t i = 0; negative_add_one && i < copy_begin; i++) {
+            if (xds[i]) negative_add_one = false;
+        }
+        if (negative_add_one) v = rb_int_plus(v, INT2FIX(1));
+        v = rb_int_and(v, mask);
+    }
+    else {
+        size_t mask_size = (size_t)end - begin;
+        VALUE mask = rb_int_minus(rb_int_lshift(INT2FIX(1), SIZET2NUM(mask_size)), INT2FIX(1));
+        v = rb_int_and(v, mask);
+    }
+    RB_GC_GUARD(x);
+    if (shift) v = rb_int_lshift(v, SSIZET2NUM(shift));
+    return v;
+}
+
+VALUE
 rb_big_hash(VALUE x)
 {
     st_index_t hash;
@@ -6871,63 +6998,11 @@ BDIGIT rb_bdigit_dbl_isqrt(BDIGIT_DBL);
 # 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;
-}
-
 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));
@@ -6937,25 +7012,19 @@ rb_big_isqrt(VALUE n)
         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);
+    else {
+        size_t shift = FIX2LONG(rb_big_bit_length(n)) / 4;
+        VALUE n2 = rb_int_rshift(n, SIZET2NUM(2 * shift));
+        VALUE x = FIXNUM_P(n2) ? LONG2FIX(rb_ulong_isqrt(FIX2ULONG(n2))) : rb_big_isqrt(n2);
+        /* x = (x+n/x)/2 */
+        x = rb_int_plus(rb_int_lshift(x, SIZET2NUM(shift - 1)), rb_int_idiv(rb_int_rshift(n, SIZET2NUM(shift + 1)), x));
+        VALUE xx = rb_int_mul(x, x);
+        while (rb_int_gt(xx, n)) {
+            xx = rb_int_minus(xx, rb_int_minus(rb_int_plus(x, x), INT2FIX(1)));
+            x = rb_int_minus(x, INT2FIX(1));
         }
+        return x;
     }
-    RBASIC_SET_CLASS_RAW(x, rb_cInteger);
-    return x;
 }
 
 #if USE_GMP
@@ -6994,14 +7063,14 @@ int_pow_tmp3(VALUE x, VALUE y, VALUE m, int nega_flg)
     if (FIXNUM_P(y)) {
        y = rb_int2big(FIX2LONG(y));
     }
-    assert(RB_BIGNUM_TYPE_P(m));
+    RUBY_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)) {
+    if (nega_flg && BIGNUM_POSITIVE_P(z) && !BIGZEROP(z)) {
         z = rb_big_minus(z, m);
     }
     RB_GC_GUARD(x);
@@ -7029,7 +7098,7 @@ int_pow_tmp3(VALUE x, VALUE y, VALUE m, int nega_flg)
         x = rb_int_modulo(x, m);
     }
 
-    if (nega_flg && rb_int_positive_p(tmp)) {
+    if (nega_flg && rb_int_positive_p(tmp) && !rb_int_zero_p(tmp)) {
         tmp = rb_int_minus(tmp, m);
     }
     return tmp;
@@ -7141,6 +7210,11 @@ rb_int_powm(int const argc, VALUE * const argv, VALUE const num)
             rb_raise(rb_eTypeError, "Integer#pow() 2nd argument not allowed unless all arguments are integers");
         }
 
+        if (rb_int_zero_p(a) && !rb_int_zero_p(b)) {
+            /* shortcut; 0**x => 0 except for x == 0 */
+            return INT2FIX(0);
+        }
+
         if (rb_int_negative_p(m)) {
             m = rb_int_uminus(m);
             nega_flg = 1;
diff --git a/bin/gem b/bin/gem
index 1c16ea7ddd..3ac1d9e623 100755
--- a/bin/gem
+++ b/bin/gem
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.
diff --git a/bootstraptest/runner.rb b/bootstraptest/runner.rb
index f9b3e919b8..04de0c93b9 100755
--- a/bootstraptest/runner.rb
+++ b/bootstraptest/runner.rb
@@ -6,7 +6,6 @@
 # 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
 
 $start_time = Time.now
 
@@ -17,6 +16,7 @@ rescue LoadError
   $:.unshift File.join(File.dirname(__FILE__), '../lib')
   retry
 end
+require_relative '../tool/lib/test/jobserver'
 
 if !Dir.respond_to?(:mktmpdir)
   # copied from lib/tmpdir.rb
@@ -77,6 +77,9 @@ bt = Struct.new(:ruby,
                 :width,
                 :indent,
                 :platform,
+                :timeout,
+                :timeout_scale,
+                :launchable_test_reports
                 )
 BT = Class.new(bt) do
   def indent=(n)
@@ -108,35 +111,7 @@ BT = Class.new(bt) do
 
   def wn=(wn)
     unless wn == 1
-      if /(?:\A|\s)--jobserver-(?:auth|fds)=(?:(\d+),(\d+)|fifo:((?:\\.|\S)+))/ =~ ENV.delete("MAKEFLAGS")
-        begin
-          if fifo = $3
-            fifo.gsub!(/\\(?=.)/, '')
-            r = File.open(fifo, IO::RDONLY|IO::NONBLOCK|IO::BINARY)
-            w = File.open(fifo, IO::WRONLY|IO::NONBLOCK|IO::BINARY)
-          else
-            r = IO.for_fd($1.to_i(10), "rb", autoclose: false)
-            w = IO.for_fd($2.to_i(10), "wb", autoclose: false)
-          end
-        rescue => e
-          r.close if r
-        else
-          r.close_on_exec = true
-          w.close_on_exec = true
-          tokens = r.read_nonblock(wn > 0 ? wn : 1024, exception: false)
-          r.close
-          if String === tokens
-            tokens.freeze
-            auth = w
-            w = nil
-            at_exit {auth << tokens; auth.close}
-            wn = tokens.size + 1
-          else
-            w.close
-            wn = 1
-          end
-        end
-      end
+      wn = Test::JobServer.max_jobs(wn > 0 ? wn : 1024, ENV.delete("MAKEFLAGS")) || wn
       if wn <= 0
         require 'etc'
         wn = [Etc.nprocessors / 2, 1].max
@@ -144,6 +119,10 @@ BT = Class.new(bt) do
     end
     super wn
   end
+
+  def apply_timeout_scale(timeout)
+    timeout&.*(timeout_scale)
+  end
 end.new
 
 BT_STATE = Struct.new(:count, :error).new
@@ -156,6 +135,12 @@ def main
   BT.color = nil
   BT.tty = nil
   BT.quiet = false
+  BT.timeout = 180
+  BT.timeout_scale = 1
+  if (ts = (ENV["RUBY_TEST_TIMEOUT_SCALE"] || ENV["RUBY_TEST_SUBPROCESS_TIMEOUT_SCALE"]).to_i) > 1
+    BT.timeout_scale *= ts
+  end
+
   # BT.wn = 1
   dir = nil
   quiet = false
@@ -186,14 +171,18 @@ def main
       warn "unknown --tty argument: #$3" if $3
       BT.tty = !$1 || !$2
       true
-    when /\A(-q|--q(uiet))\z/
+    when /\A(-q|--q(uiet)?)\z/
       quiet = true
       BT.quiet = true
       true
     when /\A-j(\d+)?/
       BT.wn = $1.to_i
       true
-    when /\A(-v|--v(erbose))\z/
+    when /\A--timeout=(\d+(?:_\d+)*(?:\.\d+(?:_\d+)*)?)(?::(\d+(?:_\d+)*(?:\.\d+(?:_\d+)*)?))?/
+      BT.timeout = $1.to_f
+      BT.timeout_scale = $2.to_f if defined?($2)
+      true
+    when /\A(-v|--v(erbose)?)\z/
       BT.verbose = true
       BT.quiet = false
       true
@@ -205,6 +194,7 @@ Usage: #{File.basename($0, '.*')} --ruby=PATH [--sets=NAME,NAME,...]
                                     default: /tmp/bootstraptestXXXXX.tmpwd
         --color[=WHEN]              Colorize the output.  WHEN defaults to 'always'
                                     or can be 'never' or 'auto'.
+        --timeout=TIMEOUT           Default timeout in seconds.
     -s, --stress                    stress test.
     -v, --verbose                   Output test name before exec.
     -q, --quiet                     Don\'t print header message.
@@ -213,6 +203,31 @@ End
       exit true
     when /\A-j/
       true
+    when /--launchable-test-reports=(.*)/
+      if File.exist?($1)
+        # To protect files from overwritten, do nothing when the file exists.
+        return true
+      end
+
+      begin
+        require_relative '../tool/lib/launchable'
+      rescue LoadError
+        # The following error sometimes happens, so we're going to skip writing Launchable report files in this case.
+        #
+        # ```
+        # /tmp/tmp.bISss9CtXZ/.ext/common/json/ext.rb:15:in 'Kernel#require':
+        #   /tmp/tmp.bISss9CtXZ/.ext/x86_64-linux/json/ext/parser.so:
+        #     undefined symbol: ruby_abi_version - ruby_abi_version (LoadError)
+        # ```
+        #
+        return true
+      end
+      BT.launchable_test_reports = writer = Launchable::JsonStreamWriter.new($1)
+      writer.write_array('testCases')
+      at_exit {
+        writer.close
+      }
+      true
     else
       false
     end
@@ -222,7 +237,7 @@ End
   end
   tests ||= ARGV
   tests = Dir.glob("#{File.dirname($0)}/test_*.rb").sort if tests.empty?
-  pathes = tests.map {|path| File.expand_path(path) }
+  paths = tests.map {|path| File.expand_path(path) }
 
   BT.progress = %w[- \\ | /]
   BT.progress_bs = "\b" * BT.progress[0].size
@@ -256,7 +271,7 @@ End
     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}]"
+      puts "Driver is ruby #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}#{RUBY_PATCHLEVEL}) [#{RUBY_PLATFORM}]"
     else
       puts "Driver is ruby #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}) [#{RUBY_PLATFORM}]"
     end
@@ -266,7 +281,7 @@ End
   end
 
   in_temporary_working_directory(dir) do
-    exec_test pathes
+    exec_test paths
   end
 end
 
@@ -278,8 +293,8 @@ def erase(e = true)
   end
 end
 
-def load_test pathes
-  pathes.each do |path|
+def load_test paths
+  paths.each do |path|
     load File.expand_path(path)
   end
 end
@@ -312,6 +327,7 @@ def concurrent_exec_test
   begin
     while BT.wn != term_wn
       if r = rq.pop
+        BT_STATE.count += 1
         case
         when BT.quiet
         when BT.tty
@@ -329,13 +345,66 @@ def concurrent_exec_test
   end
 end
 
-def exec_test(pathes)
+##
+# Module for writing a test file for uploading test results into Launchable.
+# In bootstraptest, we aggregate the test results based on file level.
+module Launchable
+  @@last_test_name = nil
+  @@failure_log = ''
+  @@duration = 0
+
+  def show_progress(message = '')
+    faildesc, t = super
+
+    if writer = BT.launchable_test_reports
+      if faildesc
+        @@failure_log += faildesc
+      end
+      repo_path = File.expand_path("#{__dir__}/../")
+      relative_path = File.join(__dir__, self.path).delete_prefix("#{repo_path}/")
+      if @@last_test_name != nil && @@last_test_name != relative_path
+        # The test path is a URL-encoded representation.
+        # https://github.com/launchableinc/cli/blob/v1.81.0/launchable/testpath.py#L18
+        test_path = "#{encode_test_path_component("file")}=#{encode_test_path_component(@@last_test_name)}"
+        if @@failure_log.size > 0
+          status = 'TEST_FAILED'
+        else
+          status = 'TEST_PASSED'
+        end
+        writer.write_object(
+          {
+            testPath: test_path,
+            status: status,
+            duration: t,
+            createdAt: Time.now.to_s,
+            stderr: @@failure_log,
+            stdout: nil,
+            data: {
+              lineNumber: self.lineno
+            }
+          }
+        )
+        @@duration = 0
+        @@failure_log = ''
+      end
+      @@last_test_name = relative_path
+      @@duration += t
+    end
+  end
+
+  private
+  def encode_test_path_component component
+    component.to_s.gsub('%', '%25').gsub('=', '%3D').gsub('#', '%23').gsub('&', '%26')
+  end
+end
+
+def exec_test(paths)
   # setup
-  load_test pathes
+  load_test paths
   BT_STATE.count = 0
   BT_STATE.error = 0
   BT.columns = 0
-  BT.width = pathes.map {|path| File.basename(path).size}.max + 2
+  BT.width = paths.map {|path| File.basename(path).size}.max + 2
 
   # execute tests
   if BT.wn > 1
@@ -405,6 +474,7 @@ def target_platform
 end
 
 class Assertion < Struct.new(:src, :path, :lineno, :proc)
+  prepend Launchable
   @count = 0
   @all = Hash.new{|h, k| h[k] = []}
   @errbuf = []
@@ -428,7 +498,7 @@ class Assertion < Struct.new(:src, :path, :lineno, :proc)
   def initialize(*args)
     super
     self.class.add self
-    @category = self.path.match(/test_(.+)\.rb/)[1]
+    @category = self.path[/\Atest_(.+)\.rb\z/, 1]
   end
 
   def call
@@ -479,9 +549,9 @@ class Assertion < Struct.new(:src, :path, :lineno, :proc)
       $stderr.print "#{BT.progress_bs}#{BT.progress[BT_STATE.count % BT.progress.size]}"
     end
 
-    t = Time.now if BT.verbose
+    t = Time.now if BT.verbose || BT.launchable_test_reports
     faildesc, errout = with_stderr {yield}
-    t = Time.now - t if BT.verbose
+    t = Time.now - t if BT.verbose || BT.launchable_test_reports
 
     if !faildesc
       # success
@@ -508,6 +578,8 @@ class Assertion < Struct.new(:src, :path, :lineno, :proc)
         $stderr.printf("%-*s%s", BT.width, path, BT.progress[BT_STATE.count % BT.progress.size])
       end
     end
+
+    [faildesc, t]
   rescue Interrupt
     $stderr.puts "\##{@id} #{path}:#{lineno}"
     raise
@@ -526,14 +598,22 @@ class Assertion < Struct.new(:src, :path, :lineno, :proc)
     end
   end
 
-  def get_result_string(opt = '', **argh)
+  class Timeout < StandardError; end
+
+  def get_result_string(opt = '', timeout: BT.timeout, **argh)
     if BT.ruby
+      timeout = BT.apply_timeout_scale(timeout)
       filename = make_srcfile(**argh)
       begin
         kw = self.err ? {err: self.err} : {}
         out = IO.popen("#{BT.ruby} -W0 #{opt} #{filename}", **kw)
         pid = out.pid
-        out.read.tap{ Process.waitpid(pid); out.close }
+        th = Thread.new {out.read.tap {Process.waitpid(pid); out.close}}
+        if th.join(timeout)
+          th.value
+        else
+          Timeout.new("timed out after #{timeout} seconds")
+        end
       ensure
         raise Interrupt if $? and $?.signaled? && $?.termsig == Signal.list["INT"]
 
@@ -551,9 +631,14 @@ class Assertion < Struct.new(:src, :path, :lineno, :proc)
   def make_srcfile(frozen_string_literal: nil)
     filename = "bootstraptest.#{self.path}_#{self.lineno}_#{self.id}.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; #{self.src}; end)"
+      f.puts "#frozen_string_literal:#{frozen_string_literal}" unless frozen_string_literal.nil?
+      if $stress
+        f.puts "GC.stress = true" if $stress
+      else
+        f.puts ""
+      end
+      f.puts "class BT_Skip < Exception; end; def skip(msg) = raise(BT_Skip, msg.to_s)"
+      f.puts "print(begin; #{self.src}; rescue BT_Skip; $!.message; end)"
     }
     filename
   end
@@ -567,9 +652,9 @@ def add_assertion src, pr
   Assertion.new(src, path, lineno, pr)
 end
 
-def assert_equal(expected, testsrc, message = '', opt = '', **argh)
+def assert_equal(expected, testsrc, message = '', opt = '', **kwargs)
   add_assertion testsrc, -> as do
-    as.assert_check(message, opt, **argh) {|result|
+    as.assert_check(message, opt, **kwargs) {|result|
       if expected == result
         nil
       else
@@ -580,9 +665,9 @@ def assert_equal(expected, testsrc, message = '', opt = '', **argh)
   end
 end
 
-def assert_match(expected_pattern, testsrc, message = '')
+def assert_match(expected_pattern, testsrc, message = '', **argh)
   add_assertion testsrc, -> as do
-    as.assert_check(message) {|result|
+    as.assert_check(message, **argh) {|result|
       if expected_pattern =~ result
         nil
       else
@@ -614,8 +699,9 @@ def assert_valid_syntax(testsrc, message = '')
   end
 end
 
-def assert_normal_exit(testsrc, *rest, timeout: nil, **opt)
+def assert_normal_exit(testsrc, *rest, timeout: BT.timeout, **opt)
   add_assertion testsrc, -> as do
+    timeout = BT.apply_timeout_scale(timeout)
     message, ignore_signals = rest
     message ||= ''
     as.show_progress(message) {
@@ -624,23 +710,19 @@ def assert_normal_exit(testsrc, *rest, timeout: nil, **opt)
       timeout_signaled = false
       logfile = "assert_normal_exit.#{as.path}.#{as.lineno}.log"
 
-      begin
-        err = open(logfile, "w")
-        io = IO.popen("#{BT.ruby} -W0 #{filename}", err: err)
-        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
-        err.close
+      io = IO.popen("#{BT.ruby} -W0 #{filename}", err: logfile)
+      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
+
       if status && status.signaled?
         signo = status.termsig
         signame = Signal.list.invert[signo]
@@ -669,9 +751,7 @@ end
 
 def assert_finish(timeout_seconds, testsrc, message = '')
   add_assertion testsrc, -> as do
-    if defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled? # for --jit-wait
-      timeout_seconds *= 3
-    end
+    timeout_seconds = BT.apply_timeout_scale(timeout_seconds)
 
     as.show_progress(message) {
       faildesc = nil
@@ -727,6 +807,8 @@ end
 
 def pretty(src, desc, result)
   src = src.sub(/\A\s*\n/, '')
+  lines = src.lines
+  src = lines[0..20].join + "(...snip)\n" if lines.size > 20
   (/\n/ =~ src ? "\n#{adjust_indent(src)}" : src) + "  #=> #{desc}"
 end
 
@@ -784,4 +866,12 @@ def check_coredump
   end
 end
 
+def yjit_enabled?
+  ENV.key?('RUBY_YJIT_ENABLE') || ENV.fetch('RUN_OPTS', '').include?('yjit') || BT.ruby.include?('yjit')
+end
+
+def zjit_enabled?
+  ENV.key?('RUBY_ZJIT_ENABLE') || ENV.fetch('RUN_OPTS', '').include?('zjit') || BT.ruby.include?('zjit')
+end
+
 exit main
diff --git a/bootstraptest/test_autoload.rb b/bootstraptest/test_autoload.rb
index 9e0850bc52..de66f1f3ee 100644
--- a/bootstraptest/test_autoload.rb
+++ b/bootstraptest/test_autoload.rb
@@ -11,7 +11,7 @@ assert_equal 'ok', %q{
 }, '[ruby-dev:43816]'
 
 assert_equal 'ok', %q{
-  open('zzz2.rb', 'w') {|f| f.puts '' }
+  File.write('zzz2.rb', '')
   instance_eval do
     autoload :ZZZ, './zzz2.rb'
     begin
@@ -23,7 +23,7 @@ assert_equal 'ok', %q{
 }, '[ruby-dev:43816]'
 
 assert_equal 'ok', %q{
-  open('zzz3.rb', 'w') {|f| f.puts 'class ZZZ; def self.ok;:ok;end;end'}
+  File.write('zzz3.rb', "class ZZZ; def self.ok;:ok;end;end\n")
   instance_eval do
     autoload :ZZZ, './zzz3.rb'
     ZZZ.ok
@@ -31,20 +31,20 @@ assert_equal 'ok', %q{
 }, '[ruby-dev:43816]'
 
 assert_equal 'ok', %q{
-  open("zzz4.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
+  File.write("zzz4.rb", "class ZZZ; def self.ok;:ok;end;end\n")
   autoload :ZZZ, "./zzz4.rb"
   ZZZ.ok
 }
 
 assert_equal 'ok', %q{
-  open("zzz5.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
+  File.write("zzz5.rb", "class ZZZ; def self.ok;:ok;end;end\n")
   autoload :ZZZ, "./zzz5.rb"
   require "./zzz5.rb"
   ZZZ.ok
 }
 
 assert_equal 'okok', %q{
-  open("zzz6.rb", "w") {|f| f.puts "class ZZZ; def self.ok;:ok;end;end"}
+  File.write("zzz6.rb", "class ZZZ; def self.ok;:ok;end;end\n")
   autoload :ZZZ, "./zzz6.rb"
   t1 = Thread.new {ZZZ.ok}
   t2 = Thread.new {ZZZ.ok}
@@ -60,7 +60,7 @@ assert_finish 5, %q{
 }, '[ruby-core:21696]'
 
 assert_equal 'A::C', %q{
-  open("zzz7.rb", "w") {}
+  File.write("zzz7.rb", "")
   class A
     autoload :C, "./zzz7"
     class C
diff --git a/bootstraptest/test_eval.rb b/bootstraptest/test_eval.rb
index a9f389c673..20bd9615f4 100644
--- a/bootstraptest/test_eval.rb
+++ b/bootstraptest/test_eval.rb
@@ -217,7 +217,7 @@ assert_equal %q{[10, main]}, %q{
 }
 
 %w[break next redo].each do |keyword|
-  assert_match %r"Can't escape from eval with #{keyword}\b", %{
+  assert_match %r"Invalid #{keyword}\b", %{
     $stderr = STDOUT
     begin
       eval "0 rescue #{keyword}"
@@ -227,6 +227,16 @@ assert_equal %q{[10, main]}, %q{
   }, '[ruby-dev:31372]'
 end
 
+assert_normal_exit %{
+  $stderr = STDOUT
+  5000.times do
+    begin
+      eval "0 rescue break"
+    rescue SyntaxError
+    end
+  end
+}
+
 assert_normal_exit %q{
   $stderr = STDOUT
   class Foo
@@ -354,3 +364,34 @@ assert_normal_exit %q{
   end
 }, 'check escaping the internal value th->base_block'
 
+assert_equal "false", <<~RUBY, "literal strings are mutable", "--disable-frozen-string-literal"
+  eval("'test'").frozen?
+RUBY
+
+assert_equal "false", <<~RUBY, "literal strings are mutable", "--disable-frozen-string-literal", frozen_string_literal: true
+  eval("'test'").frozen?
+RUBY
+
+assert_equal "true", <<~RUBY, "literal strings are frozen", "--enable-frozen-string-literal"
+  eval("'test'").frozen?
+RUBY
+
+assert_equal "true", <<~RUBY, "literal strings are frozen", "--enable-frozen-string-literal", frozen_string_literal: false
+  eval("'test'").frozen?
+RUBY
+
+assert_equal "false", <<~RUBY, "__FILE__ is mutable", "--disable-frozen-string-literal"
+  eval("__FILE__").frozen?
+RUBY
+
+assert_equal "false", <<~RUBY, "__FILE__ is mutable", "--disable-frozen-string-literal", frozen_string_literal: true
+  eval("__FILE__").frozen?
+RUBY
+
+assert_equal "true", <<~RUBY, "__FILE__ is frozen", "--enable-frozen-string-literal"
+  eval("__FILE__").frozen?
+RUBY
+
+assert_equal "true", <<~RUBY, "__FILE__ is frozen", "--enable-frozen-string-literal", frozen_string_literal: false
+  eval("__FILE__").frozen?
+RUBY
diff --git a/bootstraptest/test_exception.rb b/bootstraptest/test_exception.rb
index 0fb6f552b8..decfdc08a3 100644
--- a/bootstraptest/test_exception.rb
+++ b/bootstraptest/test_exception.rb
@@ -370,7 +370,7 @@ assert_equal %q{}, %q{
 }
 
 ##
-assert_match /undefined method `foo\'/, %q{#`
+assert_match /undefined method 'foo\'/, %q{#`
   STDERR.reopen(STDOUT)
   class C
     def inspect
diff --git a/bootstraptest/test_fiber.rb b/bootstraptest/test_fiber.rb
index 2614dd13bf..ae809a5936 100644
--- a/bootstraptest/test_fiber.rb
+++ b/bootstraptest/test_fiber.rb
@@ -37,3 +37,8 @@ assert_normal_exit %q{
 assert_normal_exit %q{
   Fiber.new(&Object.method(:class_eval)).resume("foo")
 }, '[ruby-dev:34128]'
+
+# [Bug #21400]
+assert_normal_exit %q{
+  Thread.new { Fiber.current.kill }.join
+}
diff --git a/bootstraptest/test_finalizer.rb b/bootstraptest/test_finalizer.rb
index 22a16b1220..ccfa0b55d6 100644
--- a/bootstraptest/test_finalizer.rb
+++ b/bootstraptest/test_finalizer.rb
@@ -6,3 +6,11 @@ ObjectSpace.define_finalizer(b1,proc{b1.inspect})
 ObjectSpace.define_finalizer(a2,proc{a1.inspect})
 ObjectSpace.define_finalizer(a1,proc{})
 }, '[ruby-dev:35778]'
+
+assert_equal 'true', %q{
+  obj = Object.new
+  id = obj.object_id
+
+  ObjectSpace.define_finalizer(obj, proc { |i| print(id == i) })
+  nil
+}
diff --git a/bootstraptest/test_flow.rb b/bootstraptest/test_flow.rb
index 35f19db588..15528a4213 100644
--- a/bootstraptest/test_flow.rb
+++ b/bootstraptest/test_flow.rb
@@ -363,7 +363,7 @@ assert_equal %q{[1, 2, 3, 5, 2, 3, 5, 7, 8]}, %q{$a = []; begin;  ; $a << 1
 ; $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
+  o = "test".dup; $a << 2
   def o.test(a); $a << 3
     return a; $a << 4
   ensure; $a << 5
diff --git a/bootstraptest/test_fork.rb b/bootstraptest/test_fork.rb
index 83923dad97..860ef285d0 100644
--- a/bootstraptest/test_fork.rb
+++ b/bootstraptest/test_fork.rb
@@ -75,3 +75,30 @@ assert_equal '[1, 2]', %q{
   end
 }, '[ruby-dev:44005] [Ruby 1.9 - Bug #4950]'
 
+assert_equal 'ok', %q{
+  def now = Process.clock_gettime(Process::CLOCK_MONOTONIC)
+
+  Thread.new do
+    loop { sleep 0.0001 }
+  end
+
+  10.times do
+    pid = fork{ exit!(0) }
+    deadline = now + 10
+    while true
+      _, status = Process.waitpid2(pid, Process::WNOHANG)
+      break if status
+      if now > deadline
+        Process.kill(:KILL, pid)
+        raise "failed"
+      end
+      sleep 0.001
+    end
+    unless status.success?
+      raise "child exited with status #{status}"
+    end
+  rescue NotImplementedError
+  end
+  :ok
+}, '[Bug #20670]'
+
diff --git a/bootstraptest/test_insns.rb b/bootstraptest/test_insns.rb
index 91fba9b011..9e2c4a52a7 100644
--- a/bootstraptest/test_insns.rb
+++ b/bootstraptest/test_insns.rb
@@ -92,7 +92,7 @@ tests = [
   [ 'intern',                   %q{ :"#{true}" }, ],
 
   [ 'newarray',    %q{ ["true"][0] }, ],
-  [ 'newarraykwsplat', %q{ [**{x:'true'}][0][:x] }, ],
+  [ 'pushtoarraykwsplat', %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 }, ],
@@ -214,9 +214,24 @@ tests = [
     'true'.freeze
   },
 
-  [ 'opt_newarray_max', %q{ [ ].max.nil? }, ],
-  [ 'opt_newarray_max', %q{ [1, x = 2, 3].max == 3 }, ],
-  [ 'opt_newarray_max', <<-'},', ], # {
+  [ 'opt_duparray_send', %q{ x = :a; [:a, :b].include?(x) }, ],
+  [ 'opt_duparray_send', <<-'},', ], # {
+    class Array
+      def include?(i)
+        i == 1
+      end
+    end
+    x = 1
+    [:a, :b].include?(x)
+  },
+
+  [ 'opt_newarray_send', %q{ ![ ].hash.nil? }, ],
+
+  [ 'opt_newarray_send', %q{ v=2; [1, Object.new, 2].include?(v) }, ],
+
+  [ 'opt_newarray_send', %q{ [ ].max.nil? }, ],
+  [ 'opt_newarray_send', %q{ [1, x = 2, 3].max == 3 }, ],
+  [ 'opt_newarray_send', <<-'},', ], # {
     class Array
       def max
         true
@@ -224,9 +239,9 @@ tests = [
     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', <<-'},', ], # {
+  [ 'opt_newarray_send', %q{ [ ].min.nil? }, ],
+  [ 'opt_newarray_send', %q{ [3, x = 2, 1].min == 1 }, ],
+  [ 'opt_newarray_send', <<-'},', ], # {
     class Array
       def min
         true
@@ -234,6 +249,48 @@ tests = [
     end
     [3, x = 2, 1].min
   },
+  [ 'opt_newarray_send', %q{ v = 1.23; [v, v*2].pack("E*").unpack("E*") == [v, v*2] }, ],
+  [ 'opt_newarray_send', %q{ v = 4.56; b = +"x"; [v, v*2].pack("E*", buffer: b); b[1..].unpack("E*") == [v, v*2] }, ],
+  [ 'opt_newarray_send', <<-'},', ], # {
+    v = 7.89;
+    b = +"x";
+    class Array
+      alias _pack pack
+      def pack(s, buffer: nil, prefix: "y")
+        buffer ||= +"b"
+        buffer << prefix
+        _pack(s, buffer: buffer)
+      end
+    end
+    tests = []
+
+    ret = [v].pack("E*", prefix: "z")
+    tests << (ret[0..1] == "bz")
+    tests << (ret[2..].unpack("E*") == [v])
+
+    ret = [v].pack("E*")
+    tests << (ret[0..1] == "by")
+    tests << (ret[2..].unpack("E*") == [v])
+
+    [v, v*2, v*3].pack("E*", buffer: b)
+    tests << (b[0..1] == "xy")
+    tests << (b[2..].unpack("E*") == [v, v*2, v*3])
+
+    class Array
+      def pack(_fmt, buffer:) = buffer
+    end
+
+    b = nil
+    tests << [v].pack("E*", buffer: b).nil?
+
+    class Array
+      def pack(_fmt, **kw) = kw.empty?
+    end
+
+    tests << [v].pack("E*") == true
+
+    tests.all? or puts tests
+  },
 
   [ 'throw',        %q{ false.tap { break true } }, ],
   [ 'branchif',     %q{ x = nil;  x ||= true }, ],
@@ -352,7 +409,7 @@ tests = [
   [ 'opt_ge', %q{ +0.0.next_float >= 0.0 }, ],
   [ 'opt_ge', %q{              ?z >= ?a }, ],
 
-  [ 'opt_ltlt', %q{  '' << 'true' }, ],
+  [ 'opt_ltlt', %q{  +'' << 'true' }, ],
   [ 'opt_ltlt', %q{ ([] << 'true').join }, ],
   [ 'opt_ltlt', %q{ (1 << 31) == 2147483648 }, ],
 
@@ -361,7 +418,7 @@ tests = [
   [ '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', %q{ x = +'frue'; x[0] = 't'; x }, ],
   [ 'opt_aset', <<-'},', ], # {
     # opt_aref / opt_aset mixup situation
     class X; def x; {}; end; end
@@ -369,11 +426,6 @@ tests = [
     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 }, ],
diff --git a/bootstraptest/test_io.rb b/bootstraptest/test_io.rb
index 666e5a011b..4081769a8c 100644
--- a/bootstraptest/test_io.rb
+++ b/bootstraptest/test_io.rb
@@ -85,13 +85,13 @@ assert_normal_exit %q{
   ARGF.set_encoding "foo"
 }
 
-/freebsd/ =~ RUBY_PLATFORM or
+/(freebsd|mswin)/ =~ RUBY_PLATFORM or
 10.times do
   assert_normal_exit %q{
     at_exit { p :foo }
 
     megacontent = "abc" * 12345678
-    #File.open("megasrc", "w") {|f| f << megacontent }
+    #File.write("megasrc", megacontent)
 
     t0 = Thread.main
     Thread.new { sleep 0.001 until t0.stop?; Process.kill(:INT, $$) }
diff --git a/bootstraptest/test_jump.rb b/bootstraptest/test_jump.rb
index d07c47a56d..8751343b1f 100644
--- a/bootstraptest/test_jump.rb
+++ b/bootstraptest/test_jump.rb
@@ -292,7 +292,7 @@ assert_equal "true", %q{
       end
     end
   end
-  s = "foo"
+  s = +"foo"
   s.return_eigenclass == class << s; self; end
 }, '[ruby-core:21379]'
 
diff --git a/bootstraptest/test_literal.rb b/bootstraptest/test_literal.rb
index a0d4ee08c6..39e6527027 100644
--- a/bootstraptest/test_literal.rb
+++ b/bootstraptest/test_literal.rb
@@ -70,6 +70,7 @@ if /wasi/ !~ target_platform
   assert_equal "foo\n",           %q(`echo foo`)
   assert_equal "foo\n",           %q(s = "foo"; `echo #{s}`)
 end
+assert_equal "ECHO FOO",        %q(def `(s) s.upcase; end; `echo foo`)
 
 # regexp
 assert_equal '',                '//.source'
@@ -116,16 +117,16 @@ 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]"
+assert_equal '[]',              'def nil.to_a; [1, 2]; end; [*nil]'
+assert_equal '[1]',             'def nil.to_a; [2]; end; [1, *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 '{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]'
diff --git a/bootstraptest/test_literal_suffix.rb b/bootstraptest/test_literal_suffix.rb
index c36fa7078f..7a4d67d0fa 100644
--- a/bootstraptest/test_literal_suffix.rb
+++ b/bootstraptest/test_literal_suffix.rb
@@ -46,9 +46,9 @@ 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}
+assert_equal 'unexpected local variable or method, expecting end-of-input',
+             %q{begin eval('1ir', nil, '', 0); rescue SyntaxError => e; e.message[/(?:\^~*|\A:(?:\d+:)? syntax error,) (.*)/, 1]; end}
+assert_equal 'unexpected local variable or method, expecting end-of-input',
+             %q{begin eval('1.2ir', nil, '', 0); rescue SyntaxError => e; e.message[/(?:\^~*|\A:(?:\d+:)? syntax error,) (.*)/, 1]; end}
+assert_equal 'unexpected local variable or method, expecting end-of-input',
+             %q{begin eval('1e1r', nil, '', 0); rescue SyntaxError => e; e.message[/(?:\^~*|\A:(?:\d+:)? syntax error,) (.*)/, 1]; end}
diff --git a/bootstraptest/test_load.rb b/bootstraptest/test_load.rb
index e63c93a8f4..fa8d31c098 100644
--- a/bootstraptest/test_load.rb
+++ b/bootstraptest/test_load.rb
@@ -1,9 +1,9 @@
 assert_equal 'ok', %q{
-  open("require-lock-test.rb", "w") {|f|
-    f.puts "sleep 0.1"
-    f.puts "module M"
-    f.puts "end"
-  }
+  File.write("require-lock-test.rb", <<-END)
+    sleep 0.1
+    module M
+    end
+  END
   $:.unshift Dir.pwd
   vs = (1..2).map {|i|
     Thread.start {
@@ -16,7 +16,7 @@ assert_equal 'ok', %q{
 
 assert_equal 'ok', %q{
   %w[a a/foo b].each {|d| Dir.mkdir(d)}
-  open("b/foo", "w") {|f| f.puts "$ok = :ok"}
+  File.write("b/foo", "$ok = :ok\n")
   $:.replace(%w[a b])
   begin
     load "foo"
diff --git a/bootstraptest/test_method.rb b/bootstraptest/test_method.rb
index 04c9eb2d11..78aab73485 100644
--- a/bootstraptest/test_method.rb
+++ b/bootstraptest/test_method.rb
@@ -340,24 +340,6 @@ assert_equal '1',       %q( class C; def m() 7 end; private :m 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
@@ -404,7 +386,6 @@ $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{
@@ -1107,10 +1088,6 @@ assert_equal 'ok', %q{
     'ok'
   end
 }
-assert_equal 'ok', %q{
-  [0][0, &proc{}] += 21
-  'ok'
-}, '[ruby-core:30534]'
 
 # should not cache when splat
 assert_equal 'ok', %q{
@@ -1190,3 +1167,270 @@ assert_equal 'DC', %q{
   test2 o1, [], block
   $result.join
 }
+
+assert_equal 'ok', %q{
+  def foo
+    binding
+    ["ok"].first
+  end
+  foo
+  foo
+}, '[Bug #20178]'
+
+assert_equal 'ok', %q{
+  def bar(x); x; end
+  def foo(...); bar(...); end
+  foo('ok')
+}
+
+assert_equal 'ok', %q{
+  def bar(x); x; end
+  def foo(z, ...); bar(...); end
+  foo(1, 'ok')
+}
+
+assert_equal 'ok', %q{
+  def bar(x, y); x; end
+  def foo(...); bar("ok", ...); end
+  foo(1)
+}
+
+assert_equal 'ok', %q{
+  def bar(x); x; end
+  def foo(...); 1.times { return bar(...) }; end
+  foo("ok")
+}
+
+assert_equal 'ok', %q{
+  def bar(x); x; end
+  def foo(...); x = nil; 1.times { x = bar(...) }; x; end
+  foo("ok")
+}
+
+assert_equal 'ok', %q{
+  def bar(x); yield; end
+  def foo(...); bar(...); end
+  foo(1) { "ok" }
+}
+
+assert_equal 'ok', %q{
+  def baz(x); x; end
+  def bar(...); baz(...); end
+  def foo(...); bar(...); end
+  foo("ok")
+}
+
+assert_equal '[1, 2, 3, 4]', %q{
+  def baz(a, b, c, d); [a, b, c, d]; end
+  def bar(...); baz(1, ...); end
+  def foo(...); bar(2, ...); end
+  foo(3, 4)
+}
+
+assert_equal 'ok', %q{
+  class Foo; def self.foo(x); x; end; end
+  class Bar < Foo; def self.foo(...); super; end; end
+  Bar.foo('ok')
+}
+
+assert_equal 'ok', %q{
+  class Foo; def self.foo(x); x; end; end
+  class Bar < Foo; def self.foo(...); super(...); end; end
+  Bar.foo('ok')
+}
+
+assert_equal 'ok', %q{
+  class Foo; def self.foo(x, y); x + y; end; end
+  class Bar < Foo; def self.foo(...); super("o", ...); end; end
+  Bar.foo('k')
+}
+
+assert_equal 'ok', %q{
+  def bar(a); a; end
+  def foo(...); lambda { bar(...) }; end
+  foo("ok").call
+}
+
+assert_equal 'ok', %q{
+  class Foo; def self.foo(x, y); x + y; end; end
+  class Bar < Foo; def self.y(&b); b; end; def self.foo(...); y { super("o", ...) }; end; end
+  Bar.foo('k').call
+}
+
+assert_equal 'ok', %q{
+  def baz(n); n; end
+  def foo(...); bar = baz(...); lambda { lambda { bar } }; end
+  foo("ok").call.call
+}
+
+assert_equal 'ok', %q{
+  class A; def self.foo(...); new(...); end; attr_reader :b; def initialize(a, b:"ng"); @a = a; @b = b; end end
+  A.foo(1).b
+  A.foo(1, b: "ok").b
+}
+
+assert_equal 'ok', %q{
+  class A; def initialize; @a = ["ok"]; end; def first(...); @a.first(...); end; end
+  def call x; x.first; end
+  def call1 x; x.first(1); end
+  call(A.new)
+  call1(A.new).first
+}
+
+assert_equal 'ok', %q{
+  class A; def foo; yield("o"); end; end
+  class B < A; def foo(...); super { |x| yield(x + "k") }; end; end
+  B.new.foo { |x| x }
+}
+
+assert_equal "[1, 2, 3, 4]", %q{
+  def foo(*b) = b
+
+  def forward(...)
+    splat = [1,2,3]
+    foo(*splat, ...)
+  end
+
+  forward(4)
+}
+
+assert_equal "[1, 2, 3, 4]", %q{
+class A
+  def foo(*b) = b
+end
+
+class B < A
+  def foo(...)
+    splat = [1,2,3]
+    super(*splat, ...)
+  end
+end
+
+B.new.foo(4)
+}
+
+assert_equal 'ok', %q{
+  class A; attr_reader :iv; def initialize(...) = @iv = "ok"; end
+  A.new("foo", bar: []).iv
+}
+
+assert_equal 'ok', %q{
+  def foo(a, b) = a + b
+  def bar(...) = foo(...)
+  bar(1, 2)
+  bar(1, 2)
+  begin
+    bar(1, 2, 3)
+    "ng"
+  rescue ArgumentError
+    "ok"
+  end
+}
+
+assert_equal 'ok', %q{
+  class C
+    def foo(...) = :ok
+    def bar(...) = __send__(:foo, ...)
+  end
+
+  C.new.bar
+}
+
+assert_equal 'ok', %q{
+  class C
+    def method_missing(...) = :ok
+    def foo(...) = xyzzy(...)
+  end
+
+  C.new.foo
+}
+
+assert_equal 'ok', %q{
+  class C
+    def initialize(a)
+    end
+  end
+
+  def foo(...)
+    C.new(...)
+    :ok
+  end
+
+  foo(*["bar"])
+  foo("baz")
+}
+
+assert_equal 'ok', %q{
+  class C
+    def foo(b:)
+      b
+    end
+  end
+
+  def foo(...)
+    C.new.send(...)
+  end
+
+  foo(:foo, b: :ok)
+  foo(*["foo"], b: :ok)
+}
+
+assert_equal 'ok', %q{
+  Thing = Struct.new(:value)
+
+  Obj = Thing.new("ok")
+
+  def delegate(...)
+    Obj.value(...)
+  end
+
+  def no_args
+    delegate
+  end
+
+  def splat_args(*args)
+    delegate(*args)
+  end
+
+  no_args
+  splat_args
+}
+
+assert_equal 'ok', %q{
+  class A
+    private
+    def foo = "ng"
+  end
+
+  class B
+    def initialize(o)
+      @o = o
+    end
+
+    def foo(...) = @o.foo(...)
+    def internal_foo = foo
+  end
+
+  b = B.new(A.new)
+
+  begin
+    b.internal_foo
+  rescue NoMethodError
+    "ok"
+  end
+}
+
+assert_equal 'ok', <<~RUBY
+  def test(*, kw: false)
+    "ok"
+  end
+
+  test
+RUBY
+
+assert_equal '[1, 2, 3]', %q{
+  def target(*args) = args
+  def x = [1]
+  def forwarder(...) = target(*x, 2, ...)
+  forwarder(3).inspect
+}, '[Bug #21832] post-splat args before forwarding'
diff --git a/bootstraptest/test_ractor.rb b/bootstraptest/test_ractor.rb
index 0fad04ebbc..e2a3e8dd5b 100644
--- a/bootstraptest/test_ractor.rb
+++ b/bootstraptest/test_ractor.rb
@@ -67,7 +67,7 @@ assert_equal "#<Ractor:#1 running>", %q{
 # Return id, loc, and status for no-name ractor
 assert_match /^#<Ractor:#([^ ]*?) .+:[0-9]+ terminated>$/, %q{
   r = Ractor.new { '' }
-  r.take
+  r.join
   sleep 0.1 until r.inspect =~ /terminated/
   r.inspect
 }
@@ -75,7 +75,7 @@ assert_match /^#<Ractor:#([^ ]*?) .+:[0-9]+ terminated>$/, %q{
 # Return id, name, loc, and status for named ractor
 assert_match /^#<Ractor:#([^ ]*?) Test Ractor .+:[0-9]+ terminated>$/, %q{
   r = Ractor.new(name: 'Test Ractor') { '' }
-  r.take
+  r.join
   sleep 0.1 until r.inspect =~ /terminated/
   r.inspect
 }
@@ -86,7 +86,7 @@ assert_equal 'ok', %q{
   r = Ractor.new do
     'ok'
   end
-  r.take
+  r.value
 }
 
 # Passed arguments to Ractor.new will be a block parameter
@@ -96,7 +96,7 @@ assert_equal 'ok', %q{
   r = Ractor.new 'ok' do |msg|
     msg
   end
-  r.take
+  r.value
 }
 
 # Pass multiple arguments to Ractor.new
@@ -105,7 +105,7 @@ assert_equal 'ok', %q{
   r =  Ractor.new 'ping', 'pong' do |msg, msg2|
     [msg, msg2]
   end
-  'ok' if r.take == ['ping', 'pong']
+  'ok' if r.value == ['ping', 'pong']
 }
 
 # Ractor#send passes an object with copy to a Ractor
@@ -115,65 +115,23 @@ assert_equal 'ok', %q{
     msg = Ractor.receive
   end
   r.send 'ok'
-  r.take
+  r.value
 }
 
 # Ractor#receive_if can filter the message
-assert_equal '[2, 3, 1]', %q{
-  r = Ractor.new Ractor.current do |main|
-    main << 1
-    main << 2
-    main << 3
-  end
-  a = []
-  a << Ractor.receive_if{|msg| msg == 2}
-  a << Ractor.receive_if{|msg| msg == 3}
-  a << Ractor.receive
-}
-
-# Ractor#receive_if with break
-assert_equal '[2, [1, :break], 3]', %q{
-  r = Ractor.new Ractor.current do |main|
-    main << 1
-    main << 2
-    main << 3
-  end
-
-  a = []
-  a << Ractor.receive_if{|msg| msg == 2}
-  a << Ractor.receive_if{|msg| break [msg, :break]}
-  a << Ractor.receive
-}
+assert_equal '[1, 2, 3]', %q{
+  ports = 3.times.map{Ractor::Port.new}
 
-# Ractor#receive_if can't be called recursively
-assert_equal '[[:e1, 1], [:e2, 2]]', %q{
-  r = Ractor.new Ractor.current do |main|
-    main << 1
-    main << 2
-    main << 3
+  r = Ractor.new ports do |ports|
+    ports[0] << 3
+    ports[1] << 1
+    ports[2] << 2
   end
-
   a = []
-
-  Ractor.receive_if do |msg|
-    begin
-      Ractor.receive
-    rescue Ractor::Error
-      a << [:e1, msg]
-    end
-    true # delete 1 from queue
-  end
-
-  Ractor.receive_if do |msg|
-    begin
-      Ractor.receive_if{}
-    rescue Ractor::Error
-      a << [:e2, msg]
-    end
-    true # delete 2 from queue
-  end
-
-  a #
+  a << ports[1].receive # 1
+  a << ports[2].receive # 2
+  a << ports[0].receive # 3
+  a
 }
 
 # dtoa race condition
@@ -184,73 +142,145 @@ assert_equal '[:ok, :ok, :ok]', %q{
       10_000.times{ rand.to_s }
       :ok
     }
-  }.map(&:take)
+  }.map(&:value)
+}
+
+assert_equal "42", %q{
+  a = 42
+  Ractor.shareable_lambda{ a }.call
 }
 
-# Ractor.make_shareable issue for locals in proc [Bug #18023]
+# Ractor.shareable_proc issue for locals in proc [Bug #18023]
 assert_equal '[:a, :b, :c, :d, :e]', %q{
   v1, v2, v3, v4, v5 = :a, :b, :c, :d, :e
-  closure = Ractor.current.instance_eval{ Proc.new { [v1, v2, v3, v4, v5] } }
+  closure = Proc.new { [v1, v2, v3, v4, v5] }
+  Ractor.shareable_proc(&closure).call
+}
+
+# Ractor.shareable_proc makes a copy of given Proc
+assert_equal '[true, true]', %q{
+  pr1 = Proc.new do
+    self
+  end
+  pr2 = Ractor.shareable_proc(&pr1)
 
-  Ractor.make_shareable(closure).call
+  [pr1.call == self, pr2.call == nil]
 }
 
-# Ractor.make_shareable issue for locals in proc [Bug #18023]
-assert_equal '[:a, :b, :c, :d, :e, :f, :g]', %q{
-  a = :a
-  closure = Ractor.current.instance_eval do
-    -> {
-      b, c, d = :b, :c, :d
-      -> {
-        e, f, g = :e, :f, :g
-        -> { [a, b, c, d, e, f, g] }
-      }.call
-    }.call
+# Ractor.shareable_proc keeps the original Proc intact
+assert_equal '[SyntaxError, [Object, 43, 43], Binding]', %q{
+  a = 42
+  pr1 = Proc.new do
+    [self.class, eval("a"), binding.local_variable_get(:a)]
   end
+  a += 1
+  pr2 = Ractor.shareable_proc(&pr1)
 
-  Ractor.make_shareable(closure).call
+  r = []
+  begin
+    pr2.call
+  rescue SyntaxError
+    r << SyntaxError
+  end
+
+  r << pr1.call << pr1.binding.class
 }
 
-# Now autoload in non-main Ractor is not supported
-assert_equal 'ok', %q{
-  autoload :Foo, 'foo.rb'
-  r = Ractor.new do
-    p Foo
-  rescue Ractor::UnsafeError
-    :ok
+# Ractor.make_shareable mutates the original Proc
+# This is the current behavior, it's currently considered safe enough
+# because in most cases it would raise anyway due to not-shared self or not-shared captured variable value
+assert_equal '[[42, 42], Binding, true, SyntaxError, "Can\'t create Binding from isolated Proc"]', %q{
+  a = 42
+  pr1 = nil.instance_exec do
+    Proc.new do
+      [eval("a"), binding.local_variable_get(:a)]
+    end
+  end
+
+  r = [pr1.call, pr1.binding.class]
+
+  pr2 = Ractor.make_shareable(pr1)
+  r << pr1.equal?(pr2)
+
+  begin
+    pr1.call
+  rescue SyntaxError
+    r << SyntaxError
+  end
+
+  begin
+    r << pr1.binding
+  rescue ArgumentError
+    r << $!.message
+  end
+
+  r
+}
+
+# Ractor::IsolationError cases
+assert_equal '3', %q{
+  ok = 0
+
+  begin
+    a = 1
+    Ractor.shareable_proc{a}
+    a = 2
+  rescue Ractor::IsolationError => e
+    ok += 1
+  end
+
+  begin
+    cond = false
+    b = 1
+    b = 2 if cond
+    Ractor.shareable_proc{b}
+  rescue Ractor::IsolationError => e
+    ok += 1
+  end
+
+  begin
+    1.times{|i|
+      i = 2
+      Ractor.shareable_proc{i}
+    }
+  rescue Ractor::IsolationError => e
+    ok += 1
   end
-  r.take
 }
 
 ###
 ###
 # Ractor still has several memory corruption so skip huge number of tests
-if ENV['GITHUB_WORKFLOW'] &&
-   ENV['GITHUB_WORKFLOW'] == 'Compilations'
+if 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]
+# Ractor.select with a Ractor argument
 assert_equal 'ok', %q{
   # select 1
   r1 = Ractor.new{'r1'}
-  r, obj = Ractor.select(r1)
-  'ok' if r == r1 and obj == 'r1'
+  port, obj = Ractor.select(r1)
+  if port == r1 and obj == 'r1'
+    'ok'
+  else
+    # failed
+    [port, obj].inspect
+  end
 }
 
 # Ractor.select from two ractors.
 assert_equal '["r1", "r2"]', %q{
   # select 2
-  r1 = Ractor.new{'r1'}
-  r2 = Ractor.new{'r2'}
-  rs = [r1, r2]
+  p1 = Ractor::Port.new
+  p2 = Ractor::Port.new
+  r1 = Ractor.new(p1){|p1| p1 << 'r1'}
+  r2 = Ractor.new(p2){|p2| p2 << 'r2'}
+  ps = [p1, p2]
   as = []
-  r, obj = Ractor.select(*rs)
-  rs.delete(r)
+  port, obj = Ractor.select(*ps)
+  ps.delete(port)
   as << obj
-  r, obj = Ractor.select(*rs)
+  port, obj = Ractor.select(*ps)
   as << obj
   as.sort #=> ["r1", "r2"]
 }
@@ -283,11 +313,10 @@ assert_equal 30.times.map { 'ok' }.to_s, %q{
   30.times.map{|i|
     test i
   }
-} unless ENV['RUN_OPTS'] =~ /--jit-min-calls=5/ || # This always fails with --jit-wait --jit-min-calls=5
-  (ENV.key?('TRAVIS') && ENV['TRAVIS_CPU_ARCH'] == 'arm64') # https://bugs.ruby-lang.org/issues/17878
+} unless (ENV.key?('TRAVIS') && ENV['TRAVIS_CPU_ARCH'] == 'arm64') # https://bugs.ruby-lang.org/issues/17878
 
 # Exception for empty select
-assert_match /specify at least one ractor/, %q{
+assert_match /specify at least one Ractor::Port or Ractor/, %q{
   begin
     Ractor.select
   rescue ArgumentError => e
@@ -295,30 +324,12 @@ assert_match /specify at least one ractor/, %q{
   end
 }
 
-# Outgoing port of a ractor will be closed when the Ractor is terminated.
-assert_equal 'ok', %q{
-  r = Ractor.new do
-    'finish'
-  end
-
-  r.take
-  sleep 0.1 until r.inspect =~ /terminated/
-
-  begin
-    o = r.take
-  rescue Ractor::ClosedError
-    'ok'
-  else
-    "ng: #{o}"
-  end
-}
-
 # Raise Ractor::ClosedError when try to send into a terminated ractor
 assert_equal 'ok', %q{
   r = Ractor.new do
   end
 
-  r.take # closed
+  r.join # closed
   sleep 0.1 until r.inspect =~ /terminated/
 
   begin
@@ -330,47 +341,16 @@ assert_equal 'ok', %q{
   end
 }
 
-# Raise Ractor::ClosedError when try to send into a closed actor
-assert_equal 'ok', %q{
-  r = Ractor.new { Ractor.receive }
-  r.close_incoming
-
-  begin
-    r.send(1)
-  rescue Ractor::ClosedError
-    'ok'
-  else
-    'ng'
-  end
-}
-
-# Raise Ractor::ClosedError when try to take from closed actor
-assert_equal 'ok', %q{
-  r = Ractor.new do
-    Ractor.yield 1
-    Ractor.receive
-  end
-
-  r.close_outgoing
-  begin
-    r.take
-  rescue Ractor::ClosedError
-    'ok'
-  else
-    'ng'
-  end
-}
-
-# Can mix with Thread#interrupt and Ractor#take [Bug #17366]
+# Can mix with Thread#interrupt and Ractor#join [Bug #17366]
 assert_equal 'err', %q{
-  Ractor.new{
+  Ractor.new do
     t = Thread.current
     begin
       Thread.new{ t.raise "err" }.join
     rescue => e
       e.message
     end
-  }.take
+  end.value
 }
 
 # Killed Ractor's thread yields nil
@@ -378,34 +358,18 @@ assert_equal 'nil', %q{
   Ractor.new{
     t = Thread.current
     Thread.new{ t.kill }.join
-  }.take.inspect #=> nil
+  }.value.inspect #=> nil
 }
 
-# Ractor.yield raises Ractor::ClosedError when outgoing port is closed.
+# Raise Ractor::ClosedError when try to send into a ractor with closed default port
 assert_equal 'ok', %q{
-  r = Ractor.new Ractor.current do |main|
+  r = Ractor.new {
+    Ractor.current.close
+    Ractor.main << :ok
     Ractor.receive
-    main << true
-    Ractor.yield 1
-  end
-
-  r.close_outgoing
-  r << true
-  Ractor.receive
-
-  begin
-    r.take
-  rescue Ractor::ClosedError
-    'ok'
-  else
-    'ng'
-  end
-}
+  }
 
-# Raise Ractor::ClosedError when try to send into a ractor with closed incoming port
-assert_equal 'ok', %q{
-  r = Ractor.new { Ractor.receive }
-  r.close_incoming
+  Ractor.receive # wait for ok
 
   begin
     r.send(1)
@@ -416,148 +380,82 @@ assert_equal 'ok', %q{
   end
 }
 
-# A ractor with closed incoming port still can send messages out
-assert_equal '[1, 2]', %q{
-  r = Ractor.new do
-    Ractor.yield 1
-    2
-  end
-  r.close_incoming
-
-  [r.take, r.take]
-}
-
-# Raise Ractor::ClosedError when try to take from a ractor with closed outgoing port
-assert_equal 'ok', %q{
-  r = Ractor.new do
-    Ractor.yield 1
-    Ractor.receive
-  end
-
-  sleep 0.01 # wait for Ractor.yield in r
-  r.close_outgoing
-  begin
-    r.take
-  rescue Ractor::ClosedError
-    'ok'
-  else
-    'ng'
-  end
-}
-
-# A ractor with closed outgoing port still can receive messages from incoming port
-assert_equal 'ok', %q{
-  r = Ractor.new do
-    Ractor.receive
-  end
-
-  r.close_outgoing
-  begin
-    r.send(1)
-  rescue Ractor::ClosedError
-    'ng'
-  else
-    'ok'
-  end
-}
-
 # Ractor.main returns main ractor
 assert_equal 'true', %q{
   Ractor.new{
     Ractor.main
-  }.take == Ractor.current
+  }.value == Ractor.current
 }
 
 # a ractor with closed outgoing port should terminate
 assert_equal 'ok', %q{
   Ractor.new do
-    close_outgoing
+    Ractor.current.close
   end
 
   true until Ractor.count == 1
   :ok
 }
 
-# multiple Ractors can receive (wait) from one Ractor
-assert_equal '[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]', %q{
-  pipe = Ractor.new do
-    loop do
-      Ractor.yield Ractor.receive
-    end
+# an exception in a Ractor main thread will be re-raised at Ractor#receive
+assert_equal '[RuntimeError, "ok", true]', %q{
+  r = Ractor.new do
+    raise 'ok' # exception will be transferred receiver
+  end
+  begin
+    r.join
+  rescue Ractor::RemoteError => e
+    [e.cause.class,   #=> RuntimeError
+     e.cause.message, #=> 'ok'
+     e.ractor == r]   #=> true
   end
-
-  RN = 10
-  rs = RN.times.map{|i|
-    Ractor.new pipe, i do |pipe, i|
-      msg = pipe.take
-      msg # ping-pong
-    end
-  }
-  RN.times{|i|
-    pipe << i
-  }
-  RN.times.map{
-    r, n = Ractor.select(*rs)
-    rs.delete r
-    n
-  }.sort
 }
 
-# Ractor.select also support multiple take, receive and yield
-assert_equal '[true, true, true]', %q{
-  RN = 10
-  CR = Ractor.current
-
-  rs = (1..RN).map{
-    Ractor.new do
-      CR.send 'send' + CR.take #=> 'sendyield'
-      'take'
-    end
-  }
-  received = []
-  take = []
-  yielded = []
-  until rs.empty?
-    r, v = Ractor.select(CR, *rs, yield_value: 'yield')
-    case r
-    when :receive
-      received << v
-    when :yield
-      yielded << v
-    else
-      take << v
-      rs.delete r
-    end
+# an exception in a Ractor will be re-raised at Ractor#value
+assert_equal '[RuntimeError, "ok", true]', %q{
+  r = Ractor.new do
+    raise 'ok' # exception will be transferred receiver
+  end
+  begin
+    r.value
+  rescue Ractor::RemoteError => e
+    [e.cause.class,   #=> RuntimeError
+     e.cause.message, #=> 'ok'
+     e.ractor == r]   #=> true
   end
-  [received.all?('sendyield'), yielded.all?(nil), take.all?('take')]
 }
 
-# multiple Ractors can send to one Ractor
-assert_equal '[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]', %q{
-  pipe = Ractor.new do
-    loop do
-      Ractor.yield Ractor.receive
+# an exception in a Ractor non-main thread will not be re-raised at Ractor#receive
+assert_equal 'ok', %q{
+  r = Ractor.new do
+    Thread.new do
+      raise 'ng'
     end
+    sleep 0.1
+    'ok'
   end
-
-  RN = 10
-  RN.times.map{|i|
-    Ractor.new pipe, i do |pipe, i|
-      pipe << i
-    end
-  }
-  RN.times.map{
-    pipe.take
-  }.sort
+  r.value
 }
 
-# an exception in a Ractor will be re-raised at Ractor#receive
-assert_equal '[RuntimeError, "ok", true]', %q{
-  r = Ractor.new do
-    raise 'ok' # exception will be transferred receiver
+# SystemExit from a Ractor is re-raised
+# [Bug #21505]
+assert_equal '[SystemExit, "exit", true]', %q{
+  r = Ractor.new { exit }
+  begin
+    r.value
+  rescue Ractor::RemoteError => e
+    [e.cause.class,   #=> RuntimeError
+     e.cause.message, #=> 'ok'
+     e.ractor == r]   #=> true
   end
+}
+
+# SystemExit from a Thread inside a Ractor is re-raised
+# [Bug #21505]
+assert_equal '[SystemExit, "exit", true]', %q{
+  r = Ractor.new { Thread.new { exit }.join }
   begin
-    r.take
+    r.value
   rescue Ractor::RemoteError => e
     [e.cause.class,   #=> RuntimeError
      e.cause.message, #=> 'ok'
@@ -566,7 +464,7 @@ assert_equal '[RuntimeError, "ok", true]', %q{
 }
 
 # threads in a ractor will killed
-assert_equal '{:ok=>3}', %q{
+assert_equal '{ok: 3}', %q{
   Ractor.new Ractor.current do |main|
     q = Thread::Queue.new
     Thread.new do
@@ -596,7 +494,7 @@ assert_equal '{:ok=>3}', %q{
   end
 
   3.times.map{Ractor.receive}.tally
-}
+} unless yjit_enabled? # YJIT: `[BUG] Bus Error at 0x000000010b7002d0` in jit_exec()
 
 # unshareable object are copied
 assert_equal 'false', %q{
@@ -605,7 +503,7 @@ assert_equal 'false', %q{
     msg.object_id
   end
 
-  obj.object_id == r.take
+  obj.object_id == r.value
 }
 
 # To copy the object, now Marshal#dump is used
@@ -623,11 +521,12 @@ assert_equal "allocator undefined for Thread", %q{
 }
 
 # send shareable and unshareable objects
-assert_equal "ok", %q{
-  echo_ractor = Ractor.new do
+assert_equal "ok", <<~'RUBY', frozen_string_literal: false
+  port = Ractor::Port.new
+  echo_ractor = Ractor.new port do |port|
     loop do
       v = Ractor.receive
-      Ractor.yield v
+      port << v
     end
   end
 
@@ -675,13 +574,13 @@ assert_equal "ok", %q{
 
   shareable_objects.map{|o|
     echo_ractor << o
-    o2 = echo_ractor.take
+    o2 = port.receive
     results << "#{o} is copied" unless o.object_id == o2.object_id
   }
 
   unshareable_objects.map{|o|
     echo_ractor << o
-    o2 = echo_ractor.take
+    o2 = port.receive
     results << "#{o.inspect} is not copied" if o.object_id == o2.object_id
   }
 
@@ -690,10 +589,10 @@ assert_equal "ok", %q{
   else
     results.inspect
   end
-}
+RUBY
 
 # frozen Objects are shareable
-assert_equal [false, true, false].inspect, %q{
+assert_equal [false, true, false].inspect, <<~'RUBY', frozen_string_literal: false
   class C
     def initialize freeze
       @a = 1
@@ -707,7 +606,7 @@ assert_equal [false, true, false].inspect, %q{
   def check obj1
     obj2 = Ractor.new obj1 do |obj|
       obj
-    end.take
+    end.value
 
     obj1.object_id == obj2.object_id
   end
@@ -716,11 +615,11 @@ assert_equal [false, true, false].inspect, %q{
   results << check(C.new(true))         # false
   results << check(C.new(true).freeze)  # true
   results << check(C.new(false).freeze) # false
-}
+RUBY
 
 # move example2: String
 # touching moved object causes an error
-assert_equal 'hello world', %q{
+assert_equal 'hello world', <<~'RUBY', frozen_string_literal: false
   # move
   r = Ractor.new do
     obj = Ractor.receive
@@ -729,7 +628,7 @@ assert_equal 'hello world', %q{
 
   str = 'hello'
   r.send str, move: true
-  modified = r.take
+  modified = r.value
 
   begin
     str << ' exception' # raise Ractor::MovedError
@@ -738,7 +637,7 @@ assert_equal 'hello world', %q{
   else
     raise 'unreachable'
   end
-}
+RUBY
 
 # move example2: Array
 assert_equal '[0, 1]', %q{
@@ -749,7 +648,7 @@ assert_equal '[0, 1]', %q{
 
   a1 = [0]
   r.send a1, move: true
-  a2 = r.take
+  a2 = r.value
   begin
     a1 << 2 # raise Ractor::MovedError
   rescue Ractor::MovedError
@@ -757,70 +656,39 @@ assert_equal '[0, 1]', %q{
   end
 }
 
-# move with yield
-assert_equal 'hello', %q{
-  r = Ractor.new do
-    Thread.current.report_on_exception = false
-    obj = 'hello'
-    Ractor.yield obj, move: true
-    obj << 'world'
-  end
-
-  str = r.take
-  begin
-    r.take
-  rescue Ractor::RemoteError
-    str #=> "hello"
-  end
-}
-
-# yield/move should not make moved object when the yield is not succeeded
-assert_equal '"str"', %q{
-  R = Ractor.new{}
-  M = Ractor.current
-  r = Ractor.new do
-    s = 'str'
-    selected_r, v = Ractor.select R, yield_value: s, move: true
-    raise if selected_r != R # taken from R
-    M.send s.inspect # s should not be a moved object
-  end
-
-  Ractor.receive
-}
-
-# yield/move can fail
-assert_equal "allocator undefined for Thread", %q{
+# unshareable frozen objects should still be frozen in new ractor after move
+assert_equal 'true', %q{
   r = Ractor.new do
-    obj = Thread.new{}
-    Ractor.yield obj
-  rescue => e
-    e.message
+    obj = receive
+    { frozen: obj.frozen? }
   end
-  r.take
+  obj = [Object.new].freeze
+  r.send(obj, move: true)
+  r.value[:frozen]
 }
 
-# Access to global-variables are prohibited
-assert_equal 'can not access global variables $gv from non-main Ractors', %q{
+# Access to global-variables are prohibited (read)
+assert_equal 'can not access global variable $gv from non-main Ractor', %q{
   $gv = 1
   r = Ractor.new do
     $gv
   end
 
   begin
-    r.take
+    r.join
   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{
+# Access to global-variables are prohibited (write)
+assert_equal 'can not access global variable $gv from non-main Ractor', %q{
   r = Ractor.new do
     $gv = 1
   end
 
   begin
-    r.take
+    r.join
   rescue Ractor::RemoteError => e
     e.cause.message
   end
@@ -834,7 +702,7 @@ assert_equal 'ok', %q{
     }
   end
 
-  [$stdin, $stdout, $stderr].zip(r.take){|io, (oid, fno)|
+  [$stdin, $stdout, $stderr].zip(r.value){|io, (oid, fno)|
     raise "should not be different object" if io.object_id == oid
     raise "fd should be same" unless io.fileno == fno
   }
@@ -850,7 +718,7 @@ assert_equal 'ok', %q{
     'ok'
   end
 
-  r.take
+  r.value
 }
 
 # $DEBUG, $VERBOSE are Ractor local
@@ -908,7 +776,7 @@ assert_equal 'true', %q{
 
   h = Ractor.new do
     ractor_local_globals
-  end.take
+  end.value
   ractor_local_globals == h #=> true
 }
 
@@ -917,7 +785,8 @@ assert_equal 'false', %q{
   r = Ractor.new do
     self.object_id
   end
-  r.take == self.object_id #=> false
+  ret = r.value
+  ret == self.object_id
 }
 
 # self is a Ractor instance
@@ -925,7 +794,12 @@ assert_equal 'true', %q{
   r = Ractor.new do
     self.object_id
   end
-  r.object_id == r.take #=> true
+  ret = r.value
+  if r.object_id == ret #=> true
+    true
+  else
+    raise [ret, r.object_id].inspect
+  end
 }
 
 # given block Proc will be isolated, so can not access outer variables.
@@ -940,8 +814,39 @@ assert_equal 'ArgumentError', %q{
   end
 }
 
+# eval with outer locals in a Ractor raises SyntaxError
+# [Bug #21522]
+assert_equal 'SyntaxError', %q{
+  outer = 42
+  r = Ractor.new do
+    eval("outer")
+  end
+  begin
+    r.value
+  rescue Ractor::RemoteError => e
+    e.cause.class
+  end
+}
+
+# eval of an undefined name in a Ractor raises NameError
+assert_equal 'NameError', %q{
+  r = Ractor.new do
+    eval("totally_undefined_name")
+  end
+  begin
+    r.value
+  rescue Ractor::RemoteError => e
+    e.cause.class
+  end
+}
+
+# eval of a local defined inside the Ractor works
+assert_equal '99', %q{
+  Ractor.new { inner = 99; eval("inner").to_s }.value
+}
+
 # ivar in shareable-objects are not allowed to access from non-main Ractor
-assert_equal "can not get unshareable values from instance variables of classes/modules from non-main Ractors", %q{
+assert_equal "can not get unshareable values from instance variables of classes/modules from non-main Ractors (@iv from C)", <<~'RUBY', frozen_string_literal: false
   class C
     @iv = 'str'
   end
@@ -952,13 +857,12 @@ assert_equal "can not get unshareable values from instance variables of classes/
     end
   end
 
-
   begin
-    r.take
+    r.value
   rescue Ractor::RemoteError => e
     e.cause.message
   end
-}
+RUBY
 
 # ivar in shareable-objects are not allowed to access from non-main Ractor
 assert_equal 'can not access instance variables of shareable objects from non-main Ractors', %q{
@@ -970,7 +874,7 @@ assert_equal 'can not access instance variables of shareable objects from non-ma
   end
 
   begin
-    r.take
+    r.value
   rescue Ractor::RemoteError => e
     e.cause.message
   end
@@ -996,7 +900,7 @@ assert_equal 'can not access instance variables of shareable objects from non-ma
   end
 
   begin
-    r.take
+    r.value
   rescue Ractor::RemoteError => e
     e.cause.message
   end
@@ -1017,7 +921,7 @@ assert_equal 'can not access instance variables of shareable objects from non-ma
   end
 
   begin
-    r.take
+    r.value
   rescue Ractor::RemoteError => e
     e.cause.message
   end
@@ -1031,7 +935,7 @@ assert_equal '11', %q{
 
     Ractor.new obj do |obj|
       obj.instance_variable_get('@a')
-    end.take.to_s
+    end.value.to_s
   }.join
 }
 
@@ -1057,33 +961,68 @@ assert_equal '333', %q{
     def self.fstr = @fstr
   end
 
-  a = Ractor.new{ C.int }.take
+  a = Ractor.new{ C.int }.value
   b = Ractor.new do
     C.str.to_i
   rescue Ractor::IsolationError
     10
-  end.take
+  end.value
   c = Ractor.new do
     C.fstr.to_i
-  end.take
+  end.value
 
-  d = Ractor.new{ M.int }.take
+  d = Ractor.new{ M.int }.value
   e = Ractor.new do
     M.str.to_i
   rescue Ractor::IsolationError
     20
-  end.take
+  end.value
   f = Ractor.new do
     M.fstr.to_i
-  end.take
+  end.value
 
 
   # 1 + 10 + 100 + 2 + 20 + 200
   a + b + c + d + e + f
 }
 
+assert_equal '["instance-variable", "instance-variable", nil]', %q{
+  class C
+    @iv1 = ""
+    @iv2 = 42
+    def self.iv1 = defined?(@iv1) # "instance-variable"
+    def self.iv2 = defined?(@iv2) # "instance-variable"
+    def self.iv3 = defined?(@iv3) # nil
+  end
+
+  Ractor.new{
+    [C.iv1, C.iv2, C.iv3]
+  }.value
+}
+
+# moved objects have their shape properly set to original object's shape
+assert_equal '1234', %q{
+  class Obj
+    attr_accessor :a, :b, :c, :d
+    def initialize
+      @a = 1
+      @b = 2
+      @c = 3
+    end
+  end
+  r = Ractor.new do
+    obj = receive
+    obj.d = 4
+    [obj.a, obj.b, obj.c, obj.d]
+  end
+  obj = Obj.new
+  r.send(obj, move: true)
+  values = r.value
+  values.join
+}
+
 # cvar in shareable-objects are not allowed to access from non-main Ractor
-assert_equal 'can not access class variables from non-main Ractors', %q{
+assert_equal 'can not access class variables from non-main Ractors (@@cv from C)', %q{
   class C
     @@cv = 'str'
   end
@@ -1095,14 +1034,14 @@ assert_equal 'can not access class variables from non-main Ractors', %q{
   end
 
   begin
-    r.take
+    r.join
   rescue Ractor::RemoteError => e
     e.cause.message
   end
 }
 
 # also cached cvar in shareable-objects are not allowed to access from non-main Ractor
-assert_equal 'can not access class variables from non-main Ractors', %q{
+assert_equal 'can not access class variables from non-main Ractors (@@cv from C)', %q{
   class C
     @@cv = 'str'
     def self.cv
@@ -1117,14 +1056,14 @@ assert_equal 'can not access class variables from non-main Ractors', %q{
   end
 
   begin
-    r.take
+    r.join
   rescue Ractor::RemoteError => e
     e.cause.message
   end
 }
 
 # Getting non-shareable objects via constants by other Ractors is not allowed
-assert_equal 'can not access non-shareable objects in constant C::CONST by non-main Ractor.', %q{
+assert_equal 'can not access non-shareable objects in constant C::CONST by non-main Ractor.', <<~'RUBY', frozen_string_literal: false
   class C
     CONST = 'str'
   end
@@ -1132,44 +1071,58 @@ assert_equal 'can not access non-shareable objects in constant C::CONST by non-m
     C::CONST
   end
   begin
-    r.take
+    r.join
   rescue Ractor::RemoteError => e
     e.cause.message
   end
-}
+  RUBY
 
-# Constant cache should care about non-sharable constants
-assert_equal "can not access non-shareable objects in constant Object::STR by non-main Ractor.", %q{
+# Constant cache should care about non-shareable constants
+assert_equal "can not access non-shareable objects in constant Object::STR by non-main Ractor.", <<~'RUBY', frozen_string_literal: false
   STR = "hello"
   def str; STR; end
   s = str() # fill const cache
   begin
-    Ractor.new{ str() }.take
+    Ractor.new{ str() }.join
   rescue Ractor::RemoteError => e
     e.cause.message
   end
-}
+RUBY
+
+# The correct constant path shall be reported
+assert_equal "can not access non-shareable objects in constant Object::STR by non-main Ractor.", <<~'RUBY', frozen_string_literal: false
+  STR = "hello"
+  module M
+    def self.str; STR; end
+  end
+
+  begin
+    Ractor.new{ M.str }.join
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+RUBY
 
 # Setting non-shareable objects into constants by other Ractors is not allowed
-assert_equal 'can not set constants with non-shareable objects by non-main Ractors', %q{
+assert_equal 'can not set constants with non-shareable objects by non-main Ractors', <<~'RUBY', frozen_string_literal: false
   class C
   end
   r = Ractor.new do
     C::CONST = 'str'
   end
   begin
-    r.take
+    r.join
   rescue Ractor::RemoteError => e
     e.cause.message
   end
-}
+RUBY
 
 # define_method is not allowed
 assert_equal "defined with an un-shareable Proc in a different Ractor", %q{
   str = "foo"
   define_method(:buggy){|i| str << "#{i}"}
   begin
-    Ractor.new{buggy(10)}.take
+    Ractor.new{buggy(10)}.join
   rescue => e
     e.cause.message
   end
@@ -1180,7 +1133,7 @@ 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.new{ [A.size, H.size] }.value
 }
 
 # Ractor.count
@@ -1190,15 +1143,15 @@ assert_equal '[1, 4, 3, 2, 1]', %q{
   ractors = (1..3).map { Ractor.new { Ractor.receive } }
   counts << Ractor.count
 
-  ractors[0].send('End 0').take
+  ractors[0].send('End 0').join
   sleep 0.1 until ractors[0].inspect =~ /terminated/
   counts << Ractor.count
 
-  ractors[1].send('End 1').take
+  ractors[1].send('End 1').join
   sleep 0.1 until ractors[1].inspect =~ /terminated/
   counts << Ractor.count
 
-  ractors[2].send('End 2').take
+  ractors[2].send('End 2').join
   sleep 0.1 until ractors[2].inspect =~ /terminated/
   counts << Ractor.count
 
@@ -1211,11 +1164,11 @@ assert_equal '0', %q{
     n = 0
     ObjectSpace.each_object{|o| n += 1 unless Ractor.shareable?(o)}
     n
-  }.take
+  }.value
 }
 
 # ObjectSpace._id2ref can not handle unshareable objects with Ractors
-assert_equal 'ok', %q{
+assert_equal 'ok', <<~'RUBY', frozen_string_literal: false
   s = 'hello'
 
   Ractor.new s.object_id do |id ;s|
@@ -1224,11 +1177,29 @@ assert_equal 'ok', %q{
     rescue => e
       :ok
     end
-  end.take
-}
+  end.value
+RUBY
+
+# Inserting into the id2ref table should be Ractor-safe
+assert_equal 'ok', <<~'RUBY'
+  # Force all calls to Kernel#object_id to insert into the id2ref table
+  obj = Object.new
+  ObjectSpace._id2ref(obj.object_id) rescue nil
+
+  10.times.map do
+    Ractor.new do
+      10_000.times do
+        a = Object.new
+        a.object_id
+      end
+    end
+  end.map(&:value)
+
+  :ok
+RUBY
 
 # Ractor.make_shareable(obj)
-assert_equal 'true', %q{
+assert_equal 'true', <<~'RUBY', frozen_string_literal: false
   class C
     def initialize
       @a = 'foo'
@@ -1299,7 +1270,7 @@ assert_equal 'true', %q{
   }
 
   Ractor.shareable?(a)
-}
+RUBY
 
 # Ractor.make_shareable(obj) doesn't freeze shareable objects
 assert_equal 'true', %q{
@@ -1308,19 +1279,42 @@ assert_equal 'true', %q{
   [a.frozen?, a[0].frozen?] == [true, false]
 }
 
-# Ractor.make_shareable(a_proc) makes a proc shareable.
-assert_equal 'true', %q{
-  a = [1, [2, 3], {a: "4"}]
+# Ractor.make_shareable(a_proc) requires a shareable receiver
+assert_equal '[:ok, "Proc\'s self is not shareable:"]', %q{
+  pr1 = nil.instance_exec { Proc.new{} }
+  pr2 = Proc.new{}
 
-  pr = Ractor.current.instance_eval do
-    Proc.new do
-      a
+  [pr1, pr2].map do |pr|
+    begin
+      Ractor.make_shareable(pr)
+    rescue Ractor::Error => e
+      e.message[/^.+?:/]
+    else
+      :ok
     end
   end
+}
 
-  Ractor.make_shareable(a) # referred value should be shareable
-  Ractor.make_shareable(pr)
-  Ractor.shareable?(pr)
+# Ractor.make_shareable(Method/UnboundMethod)
+assert_equal 'true', %q{
+  # raise because receiver is unshareable
+  begin
+    _m0 = Ractor.make_shareable(self.method(:__id__))
+  rescue => e
+    raise e unless e.message =~ /can not make shareable object/
+  else
+    raise "no error"
+  end
+
+  # Method with shareable receiver
+  M1 = Ractor.make_shareable(Object.method(:__id__))
+
+  # UnboundMethod
+  M2 = Ractor.make_shareable(Object.instance_method(:__id__))
+
+  Ractor.new do
+    Object.__id__ == M1.call && M1.call == M2.bind_call(Object)
+  end.value
 }
 
 # Ractor.shareable?(recursive_objects)
@@ -1355,29 +1349,10 @@ assert_equal '[C, M]', %q{
 assert_equal '1', %q{
   class C
     a = 1
-    define_method "foo", Ractor.make_shareable(Proc.new{ a })
-    a = 2
-  end
-
-  Ractor.new{ C.new.foo }.take
-}
-
-# Ractor.make_shareable(a_proc) makes a proc shareable.
-assert_equal 'can not make a Proc shareable because it accesses outer variables (a).', %q{
-  a = b = nil
-  pr = Ractor.current.instance_eval do
-    Proc.new do
-      c = b # assign to a is okay because c is block local variable
-      # reading b is okay
-      a = b # assign to a is not allowed #=> Ractor::Error
-    end
+    define_method "foo", Ractor.shareable_proc{ a }
   end
 
-  begin
-    Ractor.make_shareable(pr)
-  rescue => e
-    e.message
-  end
+  Ractor.new{ C.new.foo }.value
 }
 
 # Ractor.make_shareable(obj, copy: true) makes copied shareable object.
@@ -1396,14 +1371,14 @@ assert_equal '[false, false, true, true]', %q{
 }
 
 # TracePoint with normal Proc should be Ractor local
-assert_equal '[4, 8]', %q{
+assert_equal '[6, 10]', %q{
   rs = []
   TracePoint.new(:line){|tp| rs << tp.lineno if tp.path == __FILE__}.enable do
-    Ractor.new{ # line 4
+    Ractor.new{ # line 5
       a = 1
       b = 2
-    }.take
-    c = 3       # line 8
+    }.value
+    c = 3       # line 9
   end
   rs
 }
@@ -1412,7 +1387,7 @@ assert_equal '[4, 8]', %q{
 assert_equal '[true, false]', %q{
   Ractor.new([[]].freeze) { |ary|
     [ary.frozen?, ary.first.frozen? ]
-  }.take
+  }.value
 }
 
 # Ractor deep copies frozen objects (str)
@@ -1420,7 +1395,7 @@ assert_equal '[true, false]', %q{
   s = String.new.instance_eval { @x = []; freeze}
   Ractor.new(s) { |s|
     [s.frozen?, s.instance_variable_get(:@x).frozen?]
-  }.take
+  }.value
 }
 
 # Can not trap with not isolated Proc on non-main ractor
@@ -1428,33 +1403,85 @@ assert_equal '[:ok, :ok]', %q{
   a = []
   Ractor.new{
     trap(:INT){p :ok}
-  }.take
+  }.join
   a << :ok
 
   begin
     Ractor.new{
       s = 'str'
       trap(:INT){p s}
-    }.take
-  rescue => Ractor::RemoteError
+    }.join
+  rescue Ractor::RemoteError
     a << :ok
   end
 }
 
+# Ractor.select is interruptible
+assert_normal_exit %q{
+  trap(:INT) do
+    exit
+  end
+
+  r = Ractor.new do
+    loop do
+      sleep 1
+    end
+  end
+
+  Thread.new do
+    sleep 0.5
+    Process.kill(:INT, Process.pid)
+  end
+  Ractor.select(r)
+}
+
 # Ractor-local storage
 assert_equal '[nil, "b", "a"]', %q{
   ans = []
   Ractor.current[:key] = 'a'
   r = Ractor.new{
-    Ractor.yield self[:key]
+    Ractor.main << self[:key]
     self[:key] = 'b'
     self[:key]
   }
-  ans << r.take
-  ans << r.take
+  ans << Ractor.receive
+  ans << r.value
   ans << Ractor.current[:key]
 }
 
+assert_equal '1', %q{
+  N = 1_000
+  Ractor.new{
+    a = []
+    1_000.times.map{|i|
+      Thread.new(i){|i|
+        Thread.pass if i < N
+        a << Ractor.store_if_absent(:i){ i }
+        a << Ractor.current[:i]
+      }
+    }.each(&:join)
+    a.uniq.size
+  }.value
+}
+
+# Ractor-local storage
+assert_equal '2', %q{
+  Ractor.new {
+    fails = 0
+    begin
+      Ractor.main[:key] # cannot get ractor local storage from non-main ractor
+    rescue => e
+      fails += 1 if e.message =~ /Cannot get ractor local/
+    end
+    begin
+      Ractor.main[:key] = 'val'
+    rescue => e
+      fails += 1 if e.message =~ /Cannot set ractor local/
+    end
+    fails
+  }.value
+}
+
 ###
 ### Synchronization tests
 ###
@@ -1468,51 +1495,54 @@ assert_equal "#{N}#{N}", %Q{
     Ractor.new{
       N.times{|i| -(i.to_s)}
     }
-  }.map{|r| r.take}.join
+  }.map{|r| r.value}.join
 }
 
-# enc_table
-assert_equal "#{N/10}", %Q{
-  Ractor.new do
-    loop do
-      Encoding.find("test-enc-#{rand(5_000)}").inspect
-    rescue ArgumentError => e
+assert_equal "ok", %Q{
+  N = #{N}
+  a, b = 2.times.map{
+    Ractor.new{
+      N.times.map{|i| -(i.to_s)}
+    }
+  }.map{|r| r.value}
+  N.times do |i|
+    unless a[i].equal?(b[i])
+      raise [a[i], b[i]].inspect
+    end
+    unless a[i] == i.to_s
+      raise [i, a[i], b[i]].inspect
     end
   end
-
-  src = Encoding.find("UTF-8")
-  #{N/10}.times{|i|
-    src.replicate("test-enc-\#{i}")
-  }
+  :ok
 }
 
-# Generic ivtbl
+# Generic fields_tbl
 n = N/2
 assert_equal "#{n}#{n}", %Q{
   2.times.map{
     Ractor.new do
       #{n}.times do
-        obj = ''
+        obj = +''
         obj.instance_variable_set("@a", 1)
         obj.instance_variable_set("@b", 1)
         obj.instance_variable_set("@c", 1)
         obj.instance_variable_defined?("@a")
       end
     end
-  }.map{|r| r.take}.join
+  }.map{|r| r.value}.join
 }
 
-# NameError
-assert_equal "ok", %q{
+# Now NoMethodError is copyable
+assert_equal "NoMethodError", %q{
+  obj = "".freeze # NameError refers the receiver indirectly
   begin
-    bar
+    obj.bar
   rescue => err
   end
-  begin
-    Ractor.new{} << err
-  rescue TypeError
-    'ok'
-  end
+
+  r = Ractor.new{ Ractor.receive }
+  r << err
+  r.value.class
 }
 
 assert_equal "ok", %q{
@@ -1530,55 +1560,29 @@ assert_equal "ok", %q{
 
 # Can yield back values while GC is sweeping [Bug #18117]
 assert_equal "ok", %q{
+  port = Ractor::Port.new
   workers = (0...8).map do
-    Ractor.new do
+    Ractor.new port do |port|
       loop do
         10_000.times.map { Object.new }
-        Ractor.yield Time.now
+        port << Time.now
+        Ractor.receive
       end
     end
   end
 
-  1_000.times { idle_worker, tmp_reporter = Ractor.select(*workers) }
+  100.times {
+    workers.each do
+      port.receive
+    end
+    workers.each do |w|
+      w.send(nil)
+    end
+  }
   "ok"
-}
-
-assert_equal "ok", %q{
-  def foo(*); ->{ super }; end
-  begin
-    Ractor.make_shareable(foo)
-  rescue Ractor::IsolationError
-    "ok"
-  end
-}
-
-assert_equal "ok", %q{
-  def foo(**); ->{ super }; end
-  begin
-    Ractor.make_shareable(foo)
-  rescue Ractor::IsolationError
-    "ok"
-  end
-}
-
-assert_equal "ok", %q{
-  def foo(...); ->{ super }; end
-  begin
-    Ractor.make_shareable(foo)
-  rescue Ractor::IsolationError
-    "ok"
-  end
-}
-
-assert_equal "ok", %q{
-  def foo((x), (y)); ->{ super }; end
-  begin
-    Ractor.make_shareable(foo([], []))
-  rescue Ractor::IsolationError
-    "ok"
-  end
-}
+} if !yjit_enabled? && ENV['GITHUB_WORKFLOW'] != 'ModGC' # flaky
 
+# check method cache invalidation
 assert_equal "ok", %q{
   module M
     def foo
@@ -1618,10 +1622,935 @@ assert_equal "ok", %q{
   "ok"
 }
 
-assert_match /\Atest_ractor\.rb:1:\s+warning:\s+Ractor is experimental/, %q{
+# check method cache invalidation
+assert_equal 'true', %q{
+  class C1; def self.foo = 1; end
+  class C2; def self.foo = 2; end
+  class C3; def self.foo = 3; end
+  class C4; def self.foo = 5; end
+  class C5; def self.foo = 7; end
+  class C6; def self.foo = 11; end
+  class C7; def self.foo = 13; end
+  class C8; def self.foo = 17; end
+
+  LN = 10_000
+  RN = 10
+  CS = [C1, C2, C3, C4, C5, C6, C7, C8]
+  rs = RN.times.map{|i|
+    Ractor.new(CS.shuffle){|cs|
+      LN.times.sum{
+        cs.inject(1){|r, c| r * c.foo} # c.foo invalidates method cache entry
+      }
+    }
+  }
+
+  n = CS.inject(1){|r, c| r * c.foo} * LN
+  rs.map{|r| r.value} == Array.new(RN){n}
+}
+
+# check method cache invalidation
+assert_equal 'true', %q{
+  class Foo
+    def hello = nil
+  end
+
+  r1 = Ractor.new do
+    1000.times do
+      class Foo
+        def hello = nil
+      end
+    end
+  end
+
+  r2 = Ractor.new do
+    1000.times do
+      o = Foo.new
+      o.hello
+    end
+  end
+
+  r1.value
+  r2.value
+
+  true
+}
+
+# check experimental warning
+assert_match /\Atest_ractor\.rb:1:\s+warning:\s+Ractor API is experimental/, %q{
   Warning[:experimental] = $VERBOSE = true
   STDERR.reopen(STDOUT)
-  eval("Ractor.new{}.take", nil, "test_ractor.rb", 1)
+  eval("Ractor.new{}.value", nil, "test_ractor.rb", 1)
+}, frozen_string_literal: false
+
+# check moved object
+assert_equal 'ok', %q{
+  r = Ractor.new do
+    Ractor.receive
+    GC.start
+    :ok
+  end
+
+  obj = begin
+  raise
+  rescue => e
+    e = Marshal.load(Marshal.dump(e))
+  end
+
+  r.send obj, move: true
+  r.value
+}
+
+## Ractor::Selector
+
+# Selector#empty? returns true
+assert_equal 'true', %q{
+  skip true unless defined? Ractor::Selector
+
+  s = Ractor::Selector.new
+  s.empty?
+}
+
+# Selector#empty? returns false if there is target ractors
+assert_equal 'false', %q{
+  skip false unless defined? Ractor::Selector
+
+  s = Ractor::Selector.new
+  s.add Ractor.new{}
+  s.empty?
+}
+
+# Selector#clear removes all ractors from the waiting list
+assert_equal 'true', %q{
+  skip true unless defined? Ractor::Selector
+
+  s = Ractor::Selector.new
+  s.add Ractor.new{10}
+  s.add Ractor.new{20}
+  s.clear
+  s.empty?
+}
+
+# Selector#wait can wait multiple ractors
+assert_equal '[10, 20, true]', %q{
+  skip [10, 20, true] unless defined? Ractor::Selector
+
+  s = Ractor::Selector.new
+  s.add Ractor.new{10}
+  s.add Ractor.new{20}
+  r, v = s.wait
+  vs = []
+  vs << v
+  r, v = s.wait
+  vs << v
+  [*vs.sort, s.empty?]
+} if defined? Ractor::Selector
+
+# Selector#wait can wait multiple ractors with receiving.
+assert_equal '30', %q{
+  skip 30 unless defined? Ractor::Selector
+
+  RN = 30
+  rs = RN.times.map{
+    Ractor.new{ :v }
+  }
+  s = Ractor::Selector.new(*rs)
+
+  results = []
+  until s.empty?
+    results << s.wait
+
+    # Note that s.wait can raise an exception because other Ractors/Threads
+    # can take from the same ractors in the waiting set.
+    # In this case there is no other takers so `s.wait` doesn't raise an error.
+  end
+
+  results.size
+} if defined? Ractor::Selector
+
+# Selector#wait can support dynamic addition
+assert_equal '600', %q{
+  skip 600 unless defined? Ractor::Selector
+
+  RN = 100
+  s = Ractor::Selector.new
+  port = Ractor::Port.new
+  rs = RN.times.map{
+    Ractor.new{
+      Ractor.main << Ractor.new(port){|port| port << :v3; :v4 }
+      Ractor.main << Ractor.new(port){|port| port << :v5; :v6 }
+      Ractor.yield :v1
+      :v2
+    }
+  }
+
+  rs.each{|r| s.add(r)}
+  h = {v1: 0, v2: 0, v3: 0, v4: 0, v5: 0, v6: 0}
+
+  loop do
+    case s.wait receive: true
+    in :receive, r
+      s.add r
+    in r, v
+      h[v] += 1
+      break if h.all?{|k, v| v == RN}
+    end
+  end
+
+  h.sum{|k, v| v}
+} unless yjit_enabled? # http://ci.rvm.jp/results/trunk-yjit@ruby-sp2-docker/4466770
+
+# Selector should be GCed (free'ed) without trouble
+assert_equal 'ok', %q{
+  skip :ok unless defined? Ractor::Selector
+
+  RN = 30
+  rs = RN.times.map{
+    Ractor.new{ :v }
+  }
+  s = Ractor::Selector.new(*rs)
+  :ok
 }
 
 end # if !ENV['GITHUB_WORKFLOW']
+
+# Chilled strings are not shareable
+assert_equal 'false', %q{
+  Ractor.shareable?("chilled")
+}
+
+# Chilled strings can be made shareable
+assert_equal 'true', %q{
+  shareable = Ractor.make_shareable("chilled")
+  shareable == "chilled" && Ractor.shareable?(shareable)
+}
+
+# require in Ractor
+assert_equal 'true', %q{
+  Module.new do
+    def require feature
+      return Ractor._require(feature) unless Ractor.main?
+      super
+    end
+    Object.prepend self
+    set_temporary_name 'Ractor#require'
+  end
+
+  Ractor.new{
+    begin
+      require 'tempfile'
+      Tempfile.new
+    rescue SystemStackError
+      # prism parser with -O0 build consumes a lot of machine stack
+      Data.define(:fileno).new(1)
+    end
+  }.value.fileno > 0
+}
+
+# require_relative in Ractor
+assert_equal 'true', %q{
+  dummyfile = File.join(__dir__, "dummy#{rand}.rb")
+  return true if File.exist?(dummyfile)
+
+  begin
+    File.write dummyfile, ''
+  rescue Exception
+    # skip on any errors
+    return true
+  end
+
+  begin
+    Ractor.new dummyfile do |f|
+      require_relative File.basename(f)
+    end.value
+  ensure
+    File.unlink dummyfile
+  end
+}
+
+# require_relative in Ractor
+assert_equal 'LoadError', %q{
+  dummyfile = File.join(__dir__, "not_existed_dummy#{rand}.rb")
+  return true if File.exist?(dummyfile)
+
+  Ractor.new dummyfile do |f|
+    begin
+      require_relative File.basename(f)
+    rescue LoadError => e
+      e.class
+    end
+  end.value
+}
+
+# autolaod in Ractor
+assert_equal 'true', %q{
+  autoload :Tempfile, 'tempfile'
+
+  r = Ractor.new do
+    begin
+      Tempfile.new
+    rescue SystemStackError
+      # prism parser with -O0 build consumes a lot of machine stack
+      Data.define(:fileno).new(1)
+    end
+  end
+  r.value.fileno > 0
+}
+
+# failed in autolaod in Ractor
+assert_equal 'LoadError', %q{
+  dummyfile = File.join(__dir__, "not_existed_dummy#{rand}.rb")
+  autoload :Tempfile, dummyfile
+
+  r = Ractor.new do
+    begin
+      Tempfile.new
+    rescue LoadError => e
+      e.class
+    end
+  end
+  r.value
+}
+
+# bind_call in Ractor [Bug #20934]
+assert_equal 'ok', %q{
+  2.times.map do
+    Ractor.new do
+      1000.times do
+        Object.instance_method(:itself).bind_call(self)
+      end
+    end
+  end.each(&:join)
+  GC.start
+  :ok.itself
+}
+
+# moved objects being corrupted if embeded (String)
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = "foobarbazfoobarbazfoobarbazfoobarbaz"
+  ractor.send(obj.dup, move: true)
+  roundtripped_obj = ractor.value
+  roundtripped_obj == obj ? :ok : roundtripped_obj
+}
+
+# moved objects being corrupted if embeded (Array)
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = Array.new(10, 42)
+  ractor.send(obj.dup, move: true)
+  roundtripped_obj = ractor.value
+  roundtripped_obj == obj ? :ok : roundtripped_obj
+}
+
+# moved objects being corrupted if embeded (Hash)
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = { foo: 1, bar: 2 }
+  ractor.send(obj.dup, move: true)
+  roundtripped_obj = ractor.value
+  roundtripped_obj == obj ? :ok : roundtripped_obj
+}
+
+# moved objects being corrupted if embeded (MatchData)
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = "foo".match(/o/)
+  ractor.send(obj.dup, move: true)
+  roundtripped_obj = ractor.value
+  roundtripped_obj == obj ? :ok : roundtripped_obj
+}
+
+# moved objects being corrupted if embeded (Struct)
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = Struct.new(:a, :b, :c, :d, :e, :f).new(1, 2, 3, 4, 5, 6)
+  ractor.send(obj.dup, move: true)
+  roundtripped_obj = ractor.value
+  roundtripped_obj == obj ? :ok : roundtripped_obj
+}
+
+# moved objects being corrupted if embeded (Object)
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  class SomeObject
+    attr_reader :a, :b, :c, :d, :e, :f
+    def initialize
+      @a = @b = @c = @d = @e = @f = 1
+    end
+
+    def ==(o)
+      @a == o.a &&
+      @b == o.b &&
+      @c == o.c &&
+      @d == o.d &&
+      @e == o.e &&
+      @f == o.f
+    end
+  end
+
+  SomeObject.new # initial non-embeded
+
+  obj = SomeObject.new
+  ractor.send(obj.dup, move: true)
+  roundtripped_obj = ractor.value
+  roundtripped_obj == obj ? :ok : roundtripped_obj
+}
+
+# moved arrays can't be used
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = [1]
+  ractor.send(obj, move: true)
+  begin
+    [].concat(obj)
+  rescue TypeError
+    :ok
+  else
+    :fail
+  end
+}
+
+# moved strings can't be used
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = "hello"
+  ractor.send(obj, move: true)
+  begin
+    "".replace(obj)
+  rescue TypeError
+    :ok
+  else
+    :fail
+  end
+}
+
+# moved hashes can't be used
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = { a: 1 }
+  ractor.send(obj, move: true)
+  begin
+    {}.merge(obj)
+  rescue TypeError
+    :ok
+  else
+    :fail
+  end
+}
+
+# move objects inside frozen containers
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = Array.new(10, 42)
+  original = obj.dup
+  ractor.send([obj].freeze, move: true)
+  roundtripped_obj = ractor.value[0]
+  roundtripped_obj == original ? :ok : roundtripped_obj
+}
+
+# move object with generic ivar
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = Array.new(10, 42)
+  obj.instance_variable_set(:@array, [1])
+
+  ractor.send(obj, move: true)
+  roundtripped_obj = ractor.value
+  roundtripped_obj.instance_variable_get(:@array) == [1] ? :ok : roundtripped_obj
+}
+
+# move object with many generic ivars
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = Array.new(10, 42)
+  0.upto(300) do |i|
+    obj.instance_variable_set(:"@array#{i}", [i])
+  end
+
+  ractor.send(obj, move: true)
+  roundtripped_obj = ractor.value
+  roundtripped_obj.instance_variable_get(:@array1) == [1] ? :ok : roundtripped_obj
+}
+
+# move object with complex generic ivars
+assert_equal 'ok', %q{
+  # Make Array too_complex
+  30.times { |i| [].instance_variable_set(:"@complex#{i}", 1) }
+
+  ractor = Ractor.new { Ractor.receive }
+  obj = Array.new(10, 42)
+  obj.instance_variable_set(:@array1, [1])
+
+  ractor.send(obj, move: true)
+  roundtripped_obj = ractor.value
+  roundtripped_obj.instance_variable_get(:@array1) == [1] ? :ok : roundtripped_obj
+}
+
+# move object with generic ivars and existing id2ref table
+# [Bug #21664]
+assert_equal 'ok', %q{
+  obj = [1]
+  obj.instance_variable_set("@field", :ok)
+  ObjectSpace._id2ref(obj.object_id) # build id2ref table
+
+  ractor = Ractor.new { Ractor.receive }
+  ractor.send(obj, move: true)
+  obj = ractor.value
+  obj.instance_variable_get("@field")
+}
+
+# copy object with complex generic ivars
+assert_equal 'ok', %q{
+  # Make Array too_complex
+  30.times { |i| [].instance_variable_set(:"@complex#{i}", 1) }
+
+  ractor = Ractor.new { Ractor.receive }
+  obj = Array.new(10, 42)
+  obj.instance_variable_set(:@array1, [1])
+
+  ractor.send(obj)
+  roundtripped_obj = ractor.value
+  roundtripped_obj.instance_variable_get(:@array1) == [1] ? :ok : roundtripped_obj
+}
+
+# copy object with many generic ivars
+assert_equal 'ok', %q{
+  ractor = Ractor.new { Ractor.receive }
+  obj = Array.new(10, 42)
+  0.upto(300) do |i|
+    obj.instance_variable_set(:"@array#{i}", [i])
+  end
+
+  ractor.send(obj)
+  roundtripped_obj = ractor.value
+  roundtripped_obj.instance_variable_get(:@array1) == [1] ? :ok : roundtripped_obj
+}
+
+# moved composite types move their non-shareable parts properly
+assert_equal 'ok', %q{
+  k, v = String.new("key"), String.new("value")
+  h = { k => v }
+  h.instance_variable_set("@b", String.new("b"))
+  a = [k,v]
+  o_singleton = Object.new
+  def o_singleton.a
+    @a
+  end
+  o_singleton.instance_variable_set("@a", String.new("a"))
+  class MyObject
+    attr_reader :a
+    def initialize(a)
+      @a = a
+    end
+  end
+  struct_class = Struct.new(:a)
+  struct = struct_class.new(String.new('a'))
+  o = MyObject.new(String.new('a'))
+  port = Ractor::Port.new
+
+  r = Ractor.new port do |port|
+    loop do
+      obj = Ractor.receive
+      val = case obj
+      when Hash
+        obj['key'] == 'value' && obj.instance_variable_get("@b") == 'b'
+      when Array
+        obj[0] == 'key'
+      when Struct
+        obj.a == 'a'
+      when Object
+        obj.a == 'a'
+      end
+      port << val
+    end
+  end
+
+  objs = [h, a, o_singleton, o, struct]
+  objs.each_with_index do |obj, i|
+    klass = obj.class
+    parts_moved = {}
+    case obj
+    when Hash
+      parts_moved[klass] = [obj['key'], obj.instance_variable_get("@b")]
+    when Array
+      parts_moved[klass] = obj.dup # the contents
+    when Struct, Object
+      parts_moved[klass] = [obj.a]
+    end
+    r.send(obj, move: true)
+    val = port.receive
+    if val != true
+      raise "bad val in ractor for obj at i:#{i}"
+    end
+    begin
+      p obj
+    rescue
+    else
+      raise "should be moved"
+    end
+    parts_moved.each do |klass, parts|
+      parts.each_with_index do |part, j|
+        case part
+        when Ractor::MovedObject
+        else
+          raise "part for class #{klass} at i:#{j} should be moved"
+        end
+      end
+    end
+  end
+  'ok'
+}
+
+# fork after creating Ractor
+assert_equal 'ok', %q{
+begin
+  Ractor.new { Ractor.receive }
+  _, status = Process.waitpid2 fork { }
+  status.success? ? "ok" : status
+rescue NotImplementedError
+  :ok
+end
+}
+
+# Ractors should be terminated after fork
+assert_equal 'ok', %q{
+begin
+  r = Ractor.new { Ractor.receive }
+  _, status = Process.waitpid2 fork {
+    begin
+      raise if r.value != nil
+    end
+  }
+  r.send(123)
+  raise unless r.value == 123
+  status.success? ? "ok" : status
+rescue NotImplementedError
+  :ok
+end
+}
+
+# Ractors should be terminated after fork
+assert_equal 'ok', %q{
+begin
+  r = Ractor.new { Ractor.receive }
+  _, status = Process.waitpid2 fork {
+    begin
+      r.send(123)
+    rescue Ractor::ClosedError
+    end
+  }
+  r.send(123)
+  raise unless r.value == 123
+  status.success? ? "ok" : status
+rescue NotImplementedError
+  :ok
+end
+}
+
+# Creating classes inside of Ractors
+# [Bug #18119]
+assert_equal 'ok', %q{
+  port = Ractor::Port.new
+  workers = (0...8).map do
+    Ractor.new port do |port|
+      loop do
+        100.times.map { Class.new }
+        port << nil
+      end
+    end
+  end
+
+  100.times { port.receive }
+
+  'ok'
+}
+
+# Using Symbol#to_proc inside ractors
+# [Bug #21354]
+assert_equal 'ok', %q{
+  :inspect.to_proc
+  Ractor.new do
+    # It should not use this cached proc, it should create a new one. If it used
+    # the cached proc, we would get a ractor_confirm_belonging error here.
+    :inspect.to_proc
+  end.join
+  'ok'
+}
+
+# take vm lock when deleting generic ivars from the global table
+assert_equal 'ok', %q{
+  Ractor.new do
+    a = [1, 2, 3]
+    a.object_id
+    a.dup # this deletes generic ivar on dupped object
+    'ok'
+  end.value
+}
+
+## Ractor#monitor
+
+# monitor port returns `:exited` when the monitering Ractor terminated.
+assert_equal 'true', %q{
+  r = Ractor.new do
+    Ractor.main << :ok1
+    :ok2
+  end
+
+  r.monitor port = Ractor::Port.new
+  Ractor.receive # :ok1
+  port.receive == :exited
+}
+
+# monitor port returns `:exited` even if the monitoring Ractor was terminated.
+assert_equal 'true', %q{
+  r = Ractor.new do
+    :ok
+  end
+
+  r.join # wait for r's terminateion
+
+  r.monitor port = Ractor::Port.new
+  port.receive == :exited
+}
+
+# monitor returns false if the monitoring Ractor was terminated.
+assert_equal 'false', %q{
+  r = Ractor.new do
+    :ok
+  end
+
+  r.join # wait for r's terminateion
+
+  r.monitor Ractor::Port.new
+}
+
+# monitor port returns `:aborted` when the monitering Ractor is aborted.
+assert_equal 'true', %q{
+  r = Ractor.new do
+    Ractor.main << :ok1
+    raise 'ok'
+  end
+
+  r.monitor port = Ractor::Port.new
+  Ractor.receive # :ok1
+  port.receive == :aborted
+}
+
+# monitor port returns `:aborted` even if the monitoring Ractor was aborted.
+assert_equal 'true', %q{
+  r = Ractor.new do
+    raise 'ok'
+  end
+
+  begin
+    r.join # wait for r's terminateion
+  rescue Ractor::RemoteError
+    # ignore
+  end
+
+  r.monitor port = Ractor::Port.new
+  port.receive == :aborted
+}
+
+## Ractor#join
+
+# Ractor#join returns self when the Ractor is terminated.
+assert_equal 'true', %q{
+  r = Ractor.new do
+    Ractor.receive
+  end
+
+  r << :ok
+  r.join
+  r.inspect in /terminated/
+} if false # TODO
+
+# Ractor#join raises RemoteError when the remote Ractor aborted with an exception
+assert_equal 'err', %q{
+  r = Ractor.new do
+    raise 'err'
+  end
+
+  begin
+    r.join
+  rescue Ractor::RemoteError => e
+    e.cause.message
+  end
+}
+
+## Ractor#value
+
+# Ractor#value returns the last expression even if it is unshareable
+assert_equal 'true', %q{
+  r = Ractor.new do
+    obj = [1, 2]
+    obj << obj.object_id
+  end
+
+  ret = r.value
+  ret == [1, 2, ret.object_id]
+}
+
+# Only one Ractor can call Ractor#value
+assert_equal '[["Only the successor ractor can take a value", 9], ["ok", 2]]', %q{
+  r = Ractor.new do
+    'ok'
+  end
+
+  RN = 10
+
+  rs = RN.times.map do
+    Ractor.new r do |r|
+      begin
+        Ractor.main << r.value
+        Ractor.main << r.value # this ractor can get same result
+      rescue Ractor::Error => e
+        Ractor.main << e.message
+      end
+    end
+  end
+
+  (RN+1).times.map{
+    Ractor.receive
+  }.tally.sort
+}
+
+# Cause lots of inline CC misses.
+assert_equal 'ok', <<~'RUBY'
+  class A; def test; 1 + 1; end; end
+  class B; def test; 1 + 1; end; end
+  class C; def test; 1 + 1; end; end
+  class D; def test; 1 + 1; end; end
+  class E; def test; 1 + 1; end; end
+  class F; def test; 1 + 1; end; end
+  class G; def test; 1 + 1; end; end
+
+  objs = [A.new, B.new, C.new, D.new, E.new, F.new, G.new].freeze
+
+  def call_test(obj)
+    obj.test
+  end
+
+  ractors = 7.times.map do
+    Ractor.new(objs) do |objs|
+      objs = objs.shuffle
+      100_000.times do
+        objs.each do |o|
+          call_test(o)
+        end
+      end
+    end
+  end
+  ractors.each(&:join)
+  :ok
+RUBY
+
+# This test checks that we do not trigger a GC when we have malloc with Ractor
+# locks. We cannot trigger a GC with Ractor locks because GC requires VM lock
+# and Ractor barrier. If another Ractor is waiting on this Ractor lock, then it
+# will deadlock because the other Ractor will never join the barrier.
+#
+# Creating Ractor::Port requires locking the Ractor and inserting into an
+# st_table, which can call malloc.
+assert_equal 'ok', <<~'RUBY'
+  r = Ractor.new do
+    loop do
+      Ractor::Port.new
+    end
+  end
+
+  10.times do
+    10_000.times do
+      r.send(nil)
+    end
+    sleep(0.01)
+  end
+  :ok
+RUBY
+
+assert_equal 'ok', <<~'RUBY'
+  begin
+    100.times do |i|
+      Ractor.new(i) do |j|
+        1000.times do |i|
+          "#{j}-#{i}"
+        end
+        Ractor.receive
+      end
+      pid = fork { }
+      _, status = Process.waitpid2 pid
+      raise unless status.success?
+    end
+
+    :ok
+  rescue NotImplementedError
+    :ok
+  end
+RUBY
+
+assert_equal 'ok', <<~'RUBY'
+  begin
+    100.times do |i|
+      Ractor.new(i) do |j|
+        1000.times do |i|
+          "#{j}-#{i}"
+        end
+      end
+      pid = fork do
+        GC.verify_internal_consistency
+      end
+      _, status = Process.waitpid2 pid
+      raise unless status.success?
+    end
+
+    :ok
+  rescue NotImplementedError
+    :ok
+  end
+RUBY
+
+# When creating bmethods in Ractors, they should only be usable from their
+# defining ractor, even if it is GC'd
+assert_equal 'ok', <<~'RUBY'
+
+begin
+  CLASSES = 1000.times.map { Class.new }.freeze
+
+  # This would be better to run in parallel, but there's a bug with lambda
+  # creation and YJIT causing crashes in dev mode
+  ractors = CLASSES.map do |klass|
+    Ractor.new(klass) do |klass|
+      Ractor.receive
+      klass.define_method(:foo) {}
+    end
+  end
+
+  ractors.each do |ractor|
+    ractor << nil
+    ractor.join
+  end
+
+  ractors.clear
+  GC.start
+
+  any = 1000.times.map do
+    Ractor.new do
+      CLASSES.any? do |klass|
+        begin
+          klass.new.foo
+          true
+        rescue RuntimeError
+          false
+        end
+      end
+    end
+  end.map(&:value).none? && :ok
+rescue ThreadError => e
+  # ignore limited memory machine
+  if /can\'t create Thread/ =~ e.message
+    :ok
+  else
+    raise
+  end
+end
+RUBY
diff --git a/bootstraptest/test_syntax.rb b/bootstraptest/test_syntax.rb
index 948e2d7809..fbc9c6f62e 100644
--- a/bootstraptest/test_syntax.rb
+++ b/bootstraptest/test_syntax.rb
@@ -528,24 +528,24 @@ assert_equal %q{1}, %q{
   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
+  assert_match /^#{Regexp.escape(expected)}/,
+    "begin eval(%q{#{code}}, nil, '', 0)"'; rescue SyntaxError => e; e.message[/(?:\^~*|\A:(?:\d+:)?(?! syntax errors? found)(?: syntax error,)?) (.*)/, 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_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 "'$00' is not allowed as a global variable name", %q{$00..0}, '[ruby-dev:31100]'
+assert_syntax_error "'$00' is not allowed as a global variable name", %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_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_syntax_error %q{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]'
@@ -629,7 +629,7 @@ assert_equal '2', %q{
 
 assert_match /invalid multibyte char/, %q{
   $stderr = STDOUT
-  eval("\"\xf0".force_encoding("utf-8"))
+  eval("\"\xf0".dup.force_encoding("utf-8"))
 }, '[ruby-dev:32429]'
 
 # method ! and !=
@@ -904,3 +904,35 @@ assert_normal_exit %q{
     Class
   end
 }, '[ruby-core:30293]'
+
+assert_equal "false", <<~RUBY, "literal strings are mutable", "--disable-frozen-string-literal"
+  'test'.frozen?
+RUBY
+
+assert_equal "true", <<~RUBY, "literal strings are frozen", "--disable-frozen-string-literal", frozen_string_literal: true
+  'test'.frozen?
+RUBY
+
+assert_equal "true", <<~RUBY, "literal strings are frozen", "--enable-frozen-string-literal"
+  'test'.frozen?
+RUBY
+
+assert_equal "false", <<~RUBY, "literal strings are mutable", "--enable-frozen-string-literal", frozen_string_literal: false
+  'test'.frozen?
+RUBY
+
+assert_equal "false", <<~RUBY, "__FILE__ is mutable", "--disable-frozen-string-literal"
+  __FILE__.frozen?
+RUBY
+
+assert_equal "true", <<~RUBY, "__FILE__ is frozen", "--disable-frozen-string-literal", frozen_string_literal: true
+  __FILE__.frozen?
+RUBY
+
+assert_equal "true", <<~RUBY, "__FILE__ is frozen", "--enable-frozen-string-literal"
+  __FILE__.frozen?
+RUBY
+
+assert_equal "false", <<~RUBY, "__FILE__ is mutable", "--enable-frozen-string-literal", frozen_string_literal: false
+  __FILE__.frozen?
+RUBY
diff --git a/bootstraptest/test_thread.rb b/bootstraptest/test_thread.rb
index 5361828403..7ff5bb4a38 100644
--- a/bootstraptest/test_thread.rb
+++ b/bootstraptest/test_thread.rb
@@ -242,9 +242,22 @@ assert_equal 'true', %{
   end
 }
 
+assert_equal 'true', %{
+  Thread.new{}.join
+  begin
+    Process.waitpid2 fork{
+      Thread.new{
+        sleep 0.1
+      }.join
+    }
+    true
+  rescue NotImplementedError
+    true
+  end
+}
+
 assert_equal 'ok', %{
-  open("zzz_t1.rb", "w") do |f|
-    f.puts <<-END
+  File.write("zzz_t1.rb", <<-END)
       begin
         Thread.new { fork { GC.start } }.join
         pid, status = Process.wait2
@@ -253,7 +266,6 @@ assert_equal 'ok', %{
         $result = :ok
       end
     END
-  end
   require "./zzz_t1.rb"
   $result
 }
@@ -408,8 +420,7 @@ assert_equal 'ok', %q{
 }
 
 assert_equal 'ok', %{
-  open("zzz_t2.rb", "w") do |f|
-    f.puts <<-'end;' # do
+  File.write("zzz_t2.rb", <<-'end;') # do
       begin
         m = Thread::Mutex.new
         parent = Thread.current
@@ -431,7 +442,6 @@ assert_equal 'ok', %{
         $result = :ok
       end
     end;
-  end
   require "./zzz_t2.rb"
   $result
 }
@@ -484,6 +494,7 @@ assert_equal 'foo', %q{
   GC.start
   f.call.source
 }
+
 assert_normal_exit %q{
   class C
     def inspect
diff --git a/bootstraptest/test_yjit.rb b/bootstraptest/test_yjit.rb
index c5bb681e84..be66395190 100644
--- a/bootstraptest/test_yjit.rb
+++ b/bootstraptest/test_yjit.rb
@@ -1,3 +1,318 @@
+# To run the tests in this file only, with YJIT enabled:
+# make btest BTESTS=bootstraptest/test_yjit.rb RUN_OPTS="--yjit-call-threshold=1"
+
+# regression test for popping before side exit
+assert_equal "ok", %q{
+  def foo(a, *) = a
+
+  def call(args, &)
+    foo(1) # spill at where the block arg will be
+    foo(*args, &)
+  end
+
+  call([1, 2])
+
+  begin
+    call([])
+  rescue ArgumentError
+    :ok
+  end
+}
+
+# regression test for send processing before side exit
+assert_equal "ok", %q{
+  def foo(a, *) = :foo
+
+  def call(args)
+    send(:foo, *args)
+  end
+
+  call([1, 2])
+
+  begin
+    call([])
+  rescue ArgumentError
+    :ok
+  end
+}
+
+# test discarding extra yield arguments
+assert_equal "22131300500015901015", %q{
+  def splat_kw(ary) = yield *ary, a: 1
+
+  def splat(ary) = yield *ary
+
+  def kw = yield 1, 2, a: 3
+
+  def kw_only = yield a: 0
+
+  def simple = yield 0, 1
+
+  def none = yield
+
+  def calls
+    [
+      splat([1, 1, 2]) { |x, y| x + y },
+      splat([1, 1, 2]) { |y, opt = raise| opt + y},
+      splat_kw([0, 1]) { |a:| a },
+      kw { |a:| a },
+      kw { |one| one },
+      kw { |one, a:| a },
+      kw_only { |a:| a },
+      kw_only { |a: 1| a },
+      simple { 5.itself },
+      simple { |a| a },
+      simple { |opt = raise| opt },
+      simple { |*rest| rest },
+      simple { |opt_kw: 5| opt_kw },
+      none { |a: 9| a },
+      # autosplat ineractions
+      [0, 1, 2].yield_self { |a, b| [a, b] },
+      [0, 1, 2].yield_self { |a, opt = raise| [a, opt] },
+      [1].yield_self { |a, opt = 4| a + opt },
+    ]
+  end
+
+  calls.join
+}
+
+# test autosplat with empty splat
+assert_equal "ok", %q{
+  def m(pos, splat) = yield pos, *splat
+
+  m([:ok], []) {|v0,| v0 }
+}
+
+# regression test for send stack shifting
+assert_normal_exit %q{
+  def foo(a, b)
+    a.singleton_methods(b)
+  end
+
+  def call_foo
+    [1, 1, 1, 1, 1, 1, send(:foo, 1, 1)]
+  end
+
+  call_foo
+}
+
+# regression test for keyword splat with yield
+assert_equal 'nil', %q{
+  def splat_kw(kwargs) = yield(**kwargs)
+
+  splat_kw({}) { _1 }.inspect
+}
+
+# regression test for arity check with splat
+assert_equal '[:ae, :ae]', %q{
+  def req_one(a_, b_ = 1) = raise
+
+  def test(args)
+    req_one *args
+  rescue ArgumentError
+    :ae
+  end
+
+  [test(Array.new 5), test([])]
+}
+
+# regression test for arity check with splat and send
+assert_equal '[:ae, :ae]', %q{
+  def two_reqs(a, b_, _ = 1) = a.gsub(a, a)
+
+  def test(name, args)
+    send(name, *args)
+  rescue ArgumentError
+    :ae
+  end
+
+  [test(:two_reqs, ["g", nil, nil, nil]), test(:two_reqs, ["g"])]
+}
+
+# regression test for GC marking stubs in invalidated code
+assert_normal_exit %q{
+  skip true unless GC.respond_to?(:compact)
+  garbage = Array.new(10_000) { [] } # create garbage to cause iseq movement
+  eval(<<~RUBY)
+  def foo(n, garbage)
+    if n == 2
+      # 1.times.each to create a cfunc frame to preserve the JIT frame
+      # which will return to a stub housed in an invalidated block
+      return 1.times.each do
+        Object.define_method(:foo) {}
+        garbage.clear
+        GC.verify_compaction_references(toward: :empty, expand_heap: true)
+      end
+    end
+
+    foo(n + 1, garbage)
+  end
+  RUBY
+
+  foo(1, garbage)
+}
+
+# regression test for callee block handler overlapping with arguments
+assert_equal '3', %q{
+  def foo(_req, *args) = args.last
+
+  def call_foo = foo(0, 1, 2, 3, &->{})
+
+  call_foo
+}
+
+# call leaf builtin with a block argument
+assert_equal '0', "0.abs(&nil)"
+
+# regression test for invokeblock iseq guard
+assert_equal 'ok', %q{
+  skip :ok unless GC.respond_to?(:compact)
+  def foo = yield
+  10.times do |i|
+    ret = eval("foo { #{i} }")
+    raise "failed at #{i}" unless ret == i
+    GC.compact
+  end
+  :ok
+}
+
+# regression test for overly generous guard elision
+assert_equal '[0, :sum, 0, :sum]', %q{
+  # In faulty versions, the following happens:
+  #  1. YJIT puts object on the temp stack with type knowledge
+  #     (CArray or CString) about RBASIC_CLASS(object).
+  #  2. In iter=0, due to the type knowledge, YJIT generates
+  #     a call to sum() without any guard on RBASIC_CLASS(object).
+  #  3. In iter=1, a singleton class is added to the object,
+  #     changing RBASIC_CLASS(object), falsifying the type knowledge.
+  #  4. Because the code from (1) has no class guard, it is incorrectly
+  #     reused and the wrong method is invoked.
+  # Putting a literal is important for gaining type knowledge.
+  def carray(iter)
+    array = []
+    array.sum(iter.times { def array.sum(_) = :sum })
+  end
+
+  def cstring(iter)
+    string = "".dup
+    string.sum(iter.times { def string.sum(_) = :sum })
+  end
+
+  [carray(0), carray(1), cstring(0), cstring(1)]
+}
+
+# regression test for return type of Integer#/
+# It can return a T_BIGNUM when inputs are T_FIXNUM.
+assert_equal 0x3fffffffffffffff.to_s, %q{
+  def call(fixnum_min)
+    (fixnum_min / -1) - 1
+  end
+
+  call(-(2**62))
+}
+
+# regression test for return type of String#<<
+assert_equal 'Sub', %q{
+  def call(sub) = (sub << sub).itself
+
+  class Sub < String; end
+
+  call(Sub.new('o')).class
+}
+
+# String#dup with generic ivars
+assert_equal '["str", "ivar"]', %q{
+  def str_dup(str) = str.dup
+  str = "str"
+  str.instance_variable_set(:@ivar, "ivar")
+  str = str_dup(str)
+  [str, str.instance_variable_get(:@ivar)]
+}
+
+# test splat filling required and feeding rest
+assert_equal '[0, 1, 2, [3, 4]]', %q{
+  public def lead_rest(a, b, *rest)
+    [self, a, b, rest]
+  end
+
+  def call(args) = 0.lead_rest(*args)
+
+  call([1, 2, 3, 4])
+}
+
+# test missing opts are nil initialized
+assert_equal '[[0, 1, nil, 3], [0, 1, nil, 3], [0, 1, nil, 3, []], [0, 1, nil, 3, []]]', %q{
+  public def lead_opts(a, b=binding.local_variable_get(:c), c=3)
+    [self, a, b, c]
+  end
+
+  public def opts_rest(a=raise, b=binding.local_variable_get(:c), c=3, *rest)
+    [self, a, b, c, rest]
+  end
+
+  def call(args)
+    [
+      0.lead_opts(1),
+      0.lead_opts(*args),
+
+      0.opts_rest(1),
+      0.opts_rest(*args),
+    ]
+  end
+
+  call([1])
+}
+
+# test filled optionals with unspecified keyword param
+assert_equal 'ok', %q{
+  def opt_rest_opt_kw(_=1, *, k: :ok) = k
+
+  def call = opt_rest_opt_kw(0)
+
+  call
+}
+
+# test splat empty array with rest param
+assert_equal '[0, 1, 2, []]', %q{
+  public def foo(a=1, b=2, *rest)
+    [self, a, b, rest]
+  end
+
+  def call(args) = 0.foo(*args)
+
+  call([])
+}
+
+# Regression test for yielding with autosplat to block with
+# optional parameters. https://github.com/Shopify/yjit/issues/313
+assert_equal '[:a, :b, :a, :b]', %q{
+  def yielder(arg) = yield(arg) + yield(arg)
+
+  yielder([:a, :b]) do |c = :c, d = :d|
+    [c, d]
+  end
+}
+
+# Regression test for GC mishap while doing shape transition
+assert_equal '[:ok]', %q{
+  # [Bug #19601]
+  class RegressionTest
+    def initialize
+      @a = @b = @fourth_ivar_does_shape_transition = nil
+    end
+
+    def extender
+      @first_extended_ivar = [:ok]
+    end
+  end
+
+  GC.stress = true
+
+  # Used to crash due to GC run in rb_ensure_iv_list_size()
+  # not marking the newly allocated [:ok].
+  RegressionTest.new.extender.itself
+}
+
 assert_equal 'true', %q{
   # regression test for tracking type of locals for too long
   def local_setting_cmp(five)
@@ -45,6 +360,29 @@ assert_normal_exit %q{
   Object.send(:remove_const, :Foo)
 }
 
+assert_normal_exit %q{
+  # Test to ensure send on overridden c functions
+  # doesn't corrupt the stack
+  class Bar
+    def bar(x)
+      x
+    end
+  end
+
+  class Foo
+    def bar
+      Bar.new
+    end
+  end
+
+  foo = Foo.new
+  # before this change, this line would error
+  # because "s" would still be on the stack
+  # String.to_s is the overridden method here
+  p foo.bar.bar("s".__send__(:to_s))
+}
+
+
 assert_equal '[nil, nil, nil, nil, nil, nil]', %q{
   [NilClass, TrueClass, FalseClass, Integer, Float, Symbol].each do |klass|
     klass.class_eval("def foo = @foo")
@@ -56,88 +394,77 @@ assert_equal '[nil, nil, nil, nil, nil, nil]', %q{
   end
 }
 
-assert_equal '0', %q{
-  # This is a regression test for incomplete invalidation from
-  # opt_setinlinecache. This test might be brittle, so
-  # feel free to remove it in the future if it's too annoying.
-  # This test assumes --yjit-call-threshold=2.
-  module M
-    Foo = 1
-    def foo
-      Foo
-    end
-
-    def pin_self_type_then_foo
-      _ = @foo
-      foo
-    end
-
-    def only_ints
-      1 + self
-      foo
-    end
-  end
-
-  class Integer
-    include M
+assert_equal '[nil, nil, nil, nil, nil, nil]', %q{
+  # Tests defined? on non-heap objects
+  [NilClass, TrueClass, FalseClass, Integer, Float, Symbol].each do |klass|
+    klass.class_eval("def foo = defined?(@foo)")
   end
 
-  class Sub
-    include M
+  [nil, true, false, 0xFABCAFE, 0.42, :cake].map do |instance|
+    instance.foo
+    instance.foo
   end
+}
 
-  foo_method = M.instance_method(:foo)
+assert_equal '[nil, "instance-variable", nil, "instance-variable"]', %q{
+  # defined? on object that changes shape between calls
+  class Foo
+    def foo
+      defined?(@foo)
+    end
 
-  dbg = ->(message) do
-    return # comment this out to get printouts
+    def add
+      @foo = 1
+    end
 
-    $stderr.puts RubyVM::YJIT.disasm(foo_method)
-    $stderr.puts message
+    def remove
+      self.remove_instance_variable(:@foo)
+    end
   end
 
-  2.times { 42.only_ints }
-
-  dbg["There should be two versions of getinlineache"]
-
-  module M
-    remove_const(:Foo)
-  end
+  obj = Foo.new
+  [obj.foo, (obj.add; obj.foo), (obj.remove; obj.foo), (obj.add; obj.foo)]
+}
 
-  dbg["There should be no getinlinecaches"]
+assert_equal '["instance-variable", 5]', %q{
+  # defined? on object too complex for shape information
+  class Foo
+    def initialize
+      100.times { |i| instance_variable_set("@foo#{i}", i) }
+    end
 
-  2.times do
-    42.only_ints
-  rescue NameError => err
-    _ = "caught name error #{err}"
+    def foo
+      [defined?(@foo5), @foo5]
+    end
   end
 
-  dbg["There should be one version of getinlineache"]
-
-  2.times do
-    Sub.new.pin_self_type_then_foo
-  rescue NameError
-    _ = 'second specialization'
-  end
+  Foo.new.foo
+}
 
-  dbg["There should be two versions of getinlineache"]
+# getinstancevariable with shape too complex
+assert_normal_exit %q{
+  class Foo
+    def initialize
+      @a = 1
+    end
 
-  module M
-    Foo = 1
+    def getter
+      @foobar
+    end
   end
 
-  dbg["There should still be two versions of getinlineache"]
-
-  42.only_ints
-
-  dbg["There should be no getinlinecaches"]
+  # Initialize ivars in changing order, making the Foo
+  # class have shape too complex
+  100.times do |x|
+    foo = Foo.new
+    foo.instance_variable_set(:"@a#{x}", 1)
+    foo.instance_variable_set(:"@foobar", 777)
 
-  # Find name of the first VM instruction in M#foo.
-  insns = RubyVM::InstructionSequence.of(foo_method).to_a
-  if defined?(RubyVM::YJIT.blocks_for) && (insns.last.find { Array === _1 }&.first == :opt_getinlinecache)
-    RubyVM::YJIT.blocks_for(RubyVM::InstructionSequence.of(foo_method))
-      .filter { _1.iseq_start_index == 0 }.count
-  else
-    0 # skip the test
+    # The getter method eventually sees shape too complex
+    r = foo.getter
+    if r != 777
+      raise "error"
+    end
   end
 }
 
@@ -198,6 +525,8 @@ assert_equal 'string', %q{
 
 # Check that exceptions work when getting global variable
 assert_equal 'rescued', %q{
+  Warning[:deprecated] = true
+
   module Warning
     def warn(message)
       raise
@@ -351,6 +680,45 @@ assert_equal 'false', %q{
   less_than 2
 }
 
+# BOP redefinition works on Integer#<=
+assert_equal 'false', %q{
+  def le(x, y) = x <= y
+
+  le(2, 2)
+
+  class Integer
+    def <=(_) = false
+  end
+
+  le(2, 2)
+}
+
+# BOP redefinition works on Integer#>
+assert_equal 'false', %q{
+  def gt(x, y) = x > y
+
+  gt(3, 2)
+
+  class Integer
+    def >(_) = false
+  end
+
+  gt(3, 2)
+}
+
+# BOP redefinition works on Integer#>=
+assert_equal 'false', %q{
+  def ge(x, y) = x >= y
+
+  ge(2, 2)
+
+  class Integer
+    def >=(_) = false
+  end
+
+  ge(2, 2)
+}
+
 # Putobject, less-than operator, fixnums
 assert_equal '2', %q{
     def check_index(index)
@@ -794,6 +1162,7 @@ assert_equal 'special', %q{
 
 # Test that object references in generated code get marked and moved
 assert_equal "good", %q{
+  skip :good unless GC.respond_to?(:compact)
   def bar
     "good"
   end
@@ -817,7 +1186,7 @@ assert_equal "good", %q{
 # Test polymorphic getinstancevariable. T_OBJECT -> T_STRING
 assert_equal 'ok', %q{
   @hello = @h1 = @h2 = @h3 = @h4 = 'ok'
-  str = ""
+  str = +""
   str.instance_variable_set(:@hello, 'ok')
 
   public def get
@@ -961,6 +1330,18 @@ assert_equal '[42, :default]', %q{
   ]
 }
 
+# Test default value block for Hash
+assert_equal "false", <<~RUBY, frozen_string_literal: false
+  def index_with_string(h)
+    h["foo"]
+  end
+
+  h = Hash.new { |h, k| k.frozen? }
+
+  index_with_string(h)
+  index_with_string(h)
+RUBY
+
 # A regression test for making sure cfp->sp is proper when
 # hitting stubs. See :stub-sp-flush:
 assert_equal 'ok', %q{
@@ -1118,6 +1499,38 @@ assert_equal '42', %q{
   run
 }
 
+# splatting an empty array on a specialized method
+assert_equal 'ok', %q{
+  def run
+    "ok".to_s(*[])
+  end
+
+  run
+  run
+}
+
+# splatting an single element array on a specialized method
+assert_equal '[1]', %q{
+  def run
+    [].<<(*[1])
+  end
+
+  run
+  run
+}
+
+# specialized method with wrong args
+assert_equal 'ok', %q{
+  def run(x)
+    "bad".to_s(123) if x
+  rescue
+    :ok
+  end
+
+  run(false)
+  run(true)
+}
+
 # getinstancevariable on Symbol
 assert_equal '[nil, nil]', %q{
   # @foo to exercise the getinstancevariable instruction
@@ -1317,7 +1730,7 @@ assert_equal '{}', %q{
 }
 
 # test building hash with values
-assert_equal '{:foo=>:bar}', %q{
+assert_equal '{foo: :bar}', %q{
   def build_hash(val)
     { foo: val }
   end
@@ -1427,7 +1840,7 @@ assert_equal 'foo', %q{
 }
 
 # Test that String unary plus returns the same object ID for an unfrozen string.
-assert_equal 'true', %q{
+assert_equal 'true', <<~RUBY, frozen_string_literal: false
   def jittable_method
     str = "bar"
 
@@ -1437,7 +1850,7 @@ assert_equal 'true', %q{
     uplus_str.object_id == old_obj_id
   end
   jittable_method
-}
+RUBY
 
 # Test that String unary plus returns a different unfrozen string when given a frozen string
 assert_equal 'false', %q{
@@ -1551,6 +1964,85 @@ assert_equal 'true', %q{
   jittable_method
 }
 
+# test getbyte on string class
+assert_equal '[97, :nil, 97, :nil, :raised]', %q{
+  def getbyte(s, i)
+   byte = begin
+    s.getbyte(i)
+   rescue TypeError
+    :raised
+   end
+
+   byte || :nil
+  end
+
+  getbyte("a", 0)
+  getbyte("a", 0)
+
+  [getbyte("a", 0), getbyte("a", 1), getbyte("a", -1), getbyte("a", -2), getbyte("a", "a")]
+}
+
+# Basic test for String#setbyte
+assert_equal 'AoZ', %q{
+  s = +"foo"
+  s.setbyte(0, 65)
+  s.setbyte(-1, 90)
+  s
+}
+
+# String#setbyte IndexError
+assert_equal 'String#setbyte', %q{
+  def ccall = "".setbyte(1, 0)
+  begin
+    ccall
+  rescue => e
+    e.backtrace.first.split("'").last
+  end
+}
+
+# String#setbyte TypeError
+assert_equal 'String#setbyte', %q{
+  def ccall = "".setbyte(nil, 0)
+  begin
+    ccall
+  rescue => e
+    e.backtrace.first.split("'").last
+  end
+}
+
+# String#setbyte FrozenError
+assert_equal 'String#setbyte', %q{
+  def ccall = "a".freeze.setbyte(0, 0)
+  begin
+    ccall
+  rescue => e
+    e.backtrace.first.split("'").last
+  end
+}
+
+# non-leaf String#setbyte
+assert_equal 'String#setbyte', %q{
+  def to_int
+    @caller = caller
+    0
+  end
+
+  def ccall = "a".dup.setbyte(self, 98)
+  ccall
+
+  @caller.first.split("'").last
+}
+
+# non-leaf String#byteslice
+assert_equal 'TypeError', %q{
+  def ccall = "".byteslice(nil, nil)
+  begin
+    ccall
+  rescue => e
+    e.class
+  end
+}
+
 # Test << operator on string subclass
 assert_equal 'abab', %q{
   class MyString < String; end
@@ -1696,6 +2188,34 @@ assert_equal '7', %q{
   foo(5,2)
 }
 
+# regression test for argument registers with invalidation
+assert_equal '[0, 1, 2]', %q{
+  def test(n)
+    ret = n
+    binding
+    ret
+  end
+
+  [0, 1, 2].map do |n|
+    test(n)
+  end
+}
+
+# regression test for argument registers
+assert_equal 'true', %q{
+  class Foo
+    def ==(other)
+      other == nil
+    end
+  end
+
+  def test
+    [Foo.new].include?(Foo.new)
+  end
+
+  test
+}
+
 # test pattern matching
 assert_equal '[:ok, :ok]', %q{
   class C
@@ -1761,6 +2281,20 @@ assert_equal '123', %q{
   foo(Foo)
 }
 
+# Test EP == BP invalidation with moving ISEQs
+assert_equal 'ok', %q{
+  skip :ok unless GC.respond_to?(:compact)
+  def entry
+    ok = proc { :ok } # set #entry as an EP-escaping ISEQ
+    [nil].reverse_each do # avoid exiting the JIT frame on the constant
+      GC.compact # move #entry ISEQ
+    end
+    ok # should be read off of escaped EP
+  end
+
+  entry.call
+}
+
 # invokesuper edge case
 assert_equal '[:A, [:A, :B]]', %q{
   class B
@@ -1917,6 +2451,50 @@ assert_equal '[:A, :Btwo]', %q{
   ins.foo
 }
 
+# invokesuper with a block
+assert_equal 'true', %q{
+  class A
+    def foo = block_given?
+  end
+
+  class B < A
+    def foo = super()
+  end
+
+  B.new.foo { }
+  B.new.foo { }
+}
+
+# invokesuper in a block
+assert_equal '[0, 2]', %q{
+  class A
+    def foo(x) = x * 2
+  end
+
+  class B < A
+    def foo
+      2.times.map do |x|
+        super(x)
+      end
+    end
+  end
+
+  B.new.foo
+  B.new.foo
+}
+
+# invokesuper zsuper in a bmethod
+assert_equal 'ok', %q{
+  class Foo
+    define_method(:itself) { super }
+  end
+  begin
+    Foo.new.itself
+  rescue RuntimeError
+    :ok
+  end
+}
+
 # Call to fixnum
 assert_equal '[true, false]', %q{
   def is_odd(obj)
@@ -1957,6 +2535,16 @@ assert_equal '[true, false, true, false]', %q{
   [is_odd(123), is_odd(456), is_odd(bignum), is_odd(bignum+1)]
 }
 
+# Flonum and Flonum
+assert_equal '[2.0, 0.0, 1.0, 4.0]', %q{
+  [1.0 + 1.0, 1.0 - 1.0, 1.0 * 1.0, 8.0 / 2.0]
+}
+
+# Flonum and Fixnum
+assert_equal '[2.0, 0.0, 1.0, 4.0]', %q{
+  [1.0 + 1, 1.0 - 1, 1.0 * 1, 8.0 / 2]
+}
+
 # Call to static and dynamic symbol
 assert_equal 'bar', %q{
   def to_string(obj)
@@ -1997,6 +2585,30 @@ assert_equal '[1, 2, 3, 4, 5]', %q{
   splatarray
 }
 
+# splatkw
+assert_equal '[1, 2]', %q{
+  def foo(a:) = [a, yield]
+
+  def entry(&block)
+    a = { a: 1 }
+    foo(**a, &block)
+  end
+
+  entry { 2 }
+}
+assert_equal '[1, 2]', %q{
+  def foo(a:) = [a, yield]
+
+  def entry(obj, &block)
+    foo(**obj, &block)
+  end
+
+  entry({ a: 3 }) { 2 }
+  obj = Object.new
+  def obj.to_hash = { a: 1 }
+  entry(obj) { 2 }
+}
+
 assert_equal '[1, 1, 2, 1, 2, 3]', %q{
   def expandarray
     arr = [1, 2, 3]
@@ -2051,6 +2663,39 @@ assert_equal '[:not_array, nil, nil]', %q{
   expandarray_not_array(obj)
 }
 
+assert_equal '[1, 2]', %q{
+  class NilClass
+    private
+    def to_ary
+      [1, 2]
+    end
+  end
+
+  def expandarray_redefined_nilclass
+    a, b = nil
+    [a, b]
+  end
+
+  expandarray_redefined_nilclass
+  expandarray_redefined_nilclass
+}
+
+assert_equal 'not_array', %q{
+  def expandarray_not_array(obj)
+    a, = obj
+    a
+  end
+
+  obj = Object.new
+  def obj.method_missing(m, *args, &block)
+    return [:not_array] if m == :to_ary
+    super
+  end
+
+  expandarray_not_array(obj)
+  expandarray_not_array(obj)
+}
+
 assert_equal '[1, 2, nil]', %q{
   def expandarray_rhs_too_small
     a, b, c = [1, 2]
@@ -2061,6 +2706,17 @@ assert_equal '[1, 2, nil]', %q{
   expandarray_rhs_too_small
 }
 
+assert_equal '[nil, 2, nil]', %q{
+  def foo(arr)
+    a, b, c = arr
+  end
+
+  a, b, c1 = foo([0, 1])
+  a, b, c2 = foo([0, 1, 2])
+  a, b, c3 = foo([0, 1])
+  [c1, c2, c3]
+}
+
 assert_equal '[1, [2]]', %q{
   def expandarray_splat
     a, *b = [1, 2]
@@ -2293,15 +2949,16 @@ assert_equal '[:itself]', %q{
     itself
   end
 
-  tracing_ractor = Ractor.new do
+  port = Ractor::Port.new
+  tracing_ractor = Ractor.new port do |port|
     # 1: start tracing
     events = []
     tp = TracePoint.new(:c_call) { events << _1.method_id }
     tp.enable
-    Ractor.yield(nil)
+    port << nil
 
     # 3: run compiled method on tracing ractor
-    Ractor.yield(nil)
+    port << nil
     traced_method
 
     events
@@ -2309,13 +2966,13 @@ assert_equal '[:itself]', %q{
     tp&.disable
   end
 
-  tracing_ractor.take
+  port.receive
 
   # 2: compile on non tracing ractor
   traced_method
 
-  tracing_ractor.take
-  tracing_ractor.take
+  port.receive
+  tracing_ractor.value
 }
 
 # Try to hit a lazy branch stub while another ractor enables tracing
@@ -2329,17 +2986,18 @@ assert_equal '42', %q{
     end
   end
 
-  ractor = Ractor.new do
+  port = Ractor::Port.new
+  ractor = Ractor.new port do |port|
     compiled(false)
-    Ractor.yield(nil)
+    port << nil
     compiled(41)
   end
 
   tp = TracePoint.new(:line) { itself }
-  ractor.take
+  port.receive
   tp.enable
 
-  ractor.take
+  ractor.value
 }
 
 # Test equality with changing types
@@ -2415,7 +3073,7 @@ assert_equal '42',  %q{
   A.foo
   A.foo
 
-  Ractor.new { A.foo }.take
+  Ractor.new { A.foo }.value
 }
 
 assert_equal '["plain", "special", "sub", "plain"]', %q{
@@ -2667,7 +3325,7 @@ assert_equal '[[1, 2, 3, 4]]', %q{
 }
 
 # cfunc kwargs
-assert_equal '{:foo=>123}', %q{
+assert_equal '{foo: 123}', %q{
   def foo(bar)
     bar.store(:value, foo: 123)
     bar[:value]
@@ -2678,7 +3336,7 @@ assert_equal '{:foo=>123}', %q{
 }
 
 # cfunc kwargs
-assert_equal '{:foo=>123}', %q{
+assert_equal '{foo: 123}', %q{
   def foo(bar)
     bar.replace(foo: 123)
   end
@@ -2688,7 +3346,7 @@ assert_equal '{:foo=>123}', %q{
 }
 
 # cfunc kwargs
-assert_equal '{:foo=>123, :bar=>456}', %q{
+assert_equal '{foo: 123, bar: 456}', %q{
   def foo(bar)
     bar.replace(foo: 123, bar: 456)
   end
@@ -2698,7 +3356,7 @@ assert_equal '{:foo=>123, :bar=>456}', %q{
 }
 
 # variadic cfunc kwargs
-assert_equal '{:foo=>123}', %q{
+assert_equal '{foo: 123}', %q{
   def foo(bar)
     bar.merge(foo: 123)
   end
@@ -2822,7 +3480,7 @@ assert_equal "true", %q{
 }
 
 # duphash
-assert_equal '{:foo=>123}', %q{
+assert_equal '{foo: 123}', %q{
   def foo
     {foo: 123}
   end
@@ -2832,7 +3490,7 @@ assert_equal '{:foo=>123}', %q{
 }
 
 # newhash
-assert_equal '{:foo=>2}', %q{
+assert_equal '{foo: 2}', %q{
   def foo
     {foo: 1+1}
   end
@@ -2942,6 +3600,74 @@ assert_equal 'new', %q{
   test
 }
 
+# Bug #21257 (infinite jmp)
+assert_equal 'ok', %q{
+  Good = :ok
+
+  def first
+    second
+  end
+
+  def second
+    ::Good
+  end
+
+  # Make `second` side exit on its first instruction
+  trace = TracePoint.new(:line) { }
+  trace.enable(target: method(:second))
+
+  first
+  # Recompile now that the constant cache is populated, so we get a fallthrough from `first` to `second`
+  # (this is need to reproduce with --yjit-call-threshold=1)
+  RubyVM::YJIT.code_gc if defined?(RubyVM::YJIT)
+  first
+
+  # Trigger a constant cache miss in rb_vm_opt_getconstant_path (in `second`) next time it's called
+  module InvalidateConstantCache
+    Good = nil
+  end
+
+  RubyVM::YJIT.simulate_oom! if defined?(RubyVM::YJIT)
+
+  first
+  first
+}
+
+assert_equal 'ok', %q{
+  # Multiple incoming branches into second
+  Good = :ok
+
+  def incoming_one
+    second
+  end
+
+  def incoming_two
+    second
+  end
+
+  def second
+    ::Good
+  end
+
+  # Make `second` side exit on its first instruction
+  trace = TracePoint.new(:line) { }
+  trace.enable(target: method(:second))
+
+  incoming_one
+  # Recompile now that the constant cache is populated, so we get a fallthrough from `incoming_one` to `second`
+  # (this is need to reproduce with --yjit-call-threshold=1)
+  RubyVM::YJIT.code_gc if defined?(RubyVM::YJIT)
+  incoming_one
+  incoming_two
+
+  # Trigger a constant cache miss in rb_vm_opt_getconstant_path (in `second`) next time it's called
+  module InvalidateConstantCache
+    Good = nil
+  end
+
+  incoming_one
+}
+
 assert_equal 'ok', %q{
   # Try to compile new method while OOM
   def foo
@@ -3066,36 +3792,6 @@ assert_equal '3,12', %q{
   pt_inspect(p)
 }
 
-# Regression test for deadlock between branch_stub_hit and ractor_receive_if
-assert_equal '10', %q{
-  r = Ractor.new Ractor.current do |main|
-    main << 1
-    main << 2
-    main << 3
-    main << 4
-    main << 5
-    main << 6
-    main << 7
-    main << 8
-    main << 9
-    main << 10
-  end
-
-  a = []
-  a << Ractor.receive_if{|msg| msg == 10}
-  a << Ractor.receive_if{|msg| msg == 9}
-  a << Ractor.receive_if{|msg| msg == 8}
-  a << Ractor.receive_if{|msg| msg == 7}
-  a << Ractor.receive_if{|msg| msg == 6}
-  a << Ractor.receive_if{|msg| msg == 5}
-  a << Ractor.receive_if{|msg| msg == 4}
-  a << Ractor.receive_if{|msg| msg == 3}
-  a << Ractor.receive_if{|msg| msg == 2}
-  a << Ractor.receive_if{|msg| msg == 1}
-
-  a.length
-}
-
 # checktype
 assert_equal 'false', %q{
     def function()
@@ -3400,3 +4096,1367 @@ assert_equal '1', %q{
   bar { }
   bar { }
 }
+
+# unshareable bmethod call through Method#to_proc#call
+assert_equal '1000', %q{
+  define_method(:bmethod) do
+    self
+  end
+
+  Ractor.new do
+    errors = 0
+    1000.times do
+      p = method(:bmethod).to_proc
+      begin
+        p.call
+      rescue RuntimeError
+        errors += 1
+      end
+    end
+    errors
+  end.value
+}
+
+# test for return stub lifetime issue
+assert_equal '1', %q{
+  def foo(n)
+    if n == 2
+      return 1.times { Object.define_method(:foo) {} }
+    end
+
+    foo(n + 1)
+  end
+
+  foo(1)
+}
+
+# case-when with redefined ===
+assert_equal 'ok', %q{
+  class Symbol
+    def ===(a)
+      true
+    end
+  end
+
+  def cw(arg)
+    case arg
+    when :b
+      :ok
+    when 4
+      :ng
+    end
+  end
+
+  cw(4)
+}
+
+assert_equal 'threw', %q{
+  def foo(args)
+    wrap(*args)
+  rescue ArgumentError
+    'threw'
+  end
+
+  def wrap(a)
+    [a]
+  end
+
+  foo([Hash.ruby2_keywords_hash({})])
+}
+
+assert_equal 'threw', %q{
+  # C call
+  def bar(args)
+    Array(*args)
+  rescue ArgumentError
+    'threw'
+  end
+
+  bar([Hash.ruby2_keywords_hash({})])
+}
+
+# Test instance_of? and is_a?
+assert_equal 'true', %q{
+  1.instance_of?(Integer) && 1.is_a?(Integer)
+}
+
+# Test instance_of? and is_a? for singleton classes
+assert_equal 'true', %q{
+  a = []
+  def a.test = :test
+  a.instance_of?(Array) && a.is_a?(Array)
+}
+
+# Test instance_of? for singleton_class
+# Yes this does really return false
+assert_equal 'false', %q{
+  a = []
+  def a.test = :test
+  a.instance_of?(a.singleton_class)
+}
+
+# Test is_a? for singleton_class
+assert_equal 'true', %q{
+  a = []
+  def a.test = :test
+  a.is_a?(a.singleton_class)
+}
+
+# Test send with splat to a cfunc
+assert_equal 'true', %q{
+  1.send(:==, 1, *[])
+}
+
+# Test empty splat with cfunc
+assert_equal '2', %q{
+  def foo
+    Integer.sqrt(4, *[])
+  end
+  # call twice to deal with constant exiting
+  foo
+  foo
+}
+
+# Test non-empty splat with cfunc
+assert_equal 'Hello World', %q{
+  def bar
+    args = ["Hello "]
+    greeting = +"World"
+    greeting.insert(0, *args)
+    greeting
+  end
+  bar
+}
+
+# Regression: this creates a temp stack with > 127 elements
+assert_normal_exit %q{
+  def foo(a)
+    [
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a, a, a,
+      a, a, a, a, a, a, a, a,
+    ]
+  end
+
+  def entry
+    foo(1)
+  end
+
+  entry
+}
+
+# Test that splat and rest combined
+# properly dupe the array
+assert_equal "[]", %q{
+  def foo(*rest)
+    rest << 1
+  end
+
+  def test(splat)
+    foo(*splat)
+  end
+
+  EMPTY = []
+  custom = Object.new
+  def custom.to_a
+    EMPTY
+  end
+
+  test(custom)
+  test(custom)
+  EMPTY
+}
+
+# Rest with send
+assert_equal '[1, 2, 3]', %q{
+  def bar(x, *rest)
+    rest.insert(0, x)
+  end
+  send(:bar, 1, 2, 3)
+}
+
+# Fix splat block arg bad compilation
+assert_equal "foo", %q{
+  def literal(*args, &block)
+    s = ''.dup
+    literal_append(s, *args, &block)
+    s
+  end
+
+  def literal_append(sql, v)
+    sql << v
+  end
+
+  literal("foo")
+}
+
+# regression test for accidentally having a parameter truncated
+# due to Rust/C signature mismatch. Used to crash with
+# > [BUG] rb_vm_insn_addr2insn: invalid insn address ...
+# or
+# > ... `Err` value: TryFromIntError(())'
+assert_normal_exit %q{
+  n = 16384
+  eval(
+    "def foo(arg); " + "_=arg;" * n + '_=1;' + "Object; end"
+  )
+  foo 1
+}
+
+# Regression test for CantCompile not using starting_ctx
+assert_normal_exit %q{
+  class Integer
+    def ===(other)
+      false
+    end
+  end
+
+  def my_func(x)
+    case x
+    when 1
+      1
+    when 2
+      2
+    else
+      3
+    end
+  end
+
+  my_func(1)
+}
+
+# Regression test for CantCompile not using starting_ctx
+assert_equal "ArgumentError", %q{
+  def literal(*args, &block)
+    s = ''.dup
+    args = [1, 2, 3]
+    literal_append(s, *args, &block)
+    s
+  end
+
+  def literal_append(sql, v)
+    [sql.inspect, v.inspect]
+  end
+
+  begin
+    literal("foo")
+  rescue ArgumentError
+    "ArgumentError"
+  end
+}
+
+# Rest with block
+# Simplified code from railsbench
+assert_equal '[{"/a" => "b", as: :c, via: :post}, [], nil]', %q{
+  def match(path, *rest, &block)
+    [path, rest, block]
+  end
+
+  def map_method(method, args, &block)
+    options = args.last
+    args.pop
+    options[:via] = method
+    match(*args, options, &block)
+  end
+
+  def post(*args, &block)
+    map_method(:post, args, &block)
+  end
+
+  post "/a" => "b", as: :c
+}
+
+# Test rest and kw_args
+assert_equal '[true, true, true, true]', %q{
+  def my_func(*args, base: nil, sort: true)
+    [args, base, sort]
+  end
+
+  def calling_my_func
+    results = []
+    results << (my_func("test") == [["test"], nil, true])
+    results << (my_func("test", base: :base) == [["test"], :base, true])
+    results << (my_func("test", sort: false) == [["test"], nil, false])
+    results << (my_func("test", "other", base: :base) == [["test", "other"], :base, true])
+    results
+  end
+  calling_my_func
+}
+
+# Test Integer#[] with 2 args
+assert_equal '0', %q{
+  3[0, 0]
+}
+
+# unspecified_bits + checkkeyword
+assert_equal '2', %q{
+  def callee = 1
+
+  # checkkeyword should see unspecified_bits=0 (use bar), not Integer 1 (set bar = foo).
+  def foo(foo, bar: foo) = bar
+
+  def entry(&block)
+    # write 1 at stack[3]. Calling #callee spills stack[3].
+    1 + (1 + (1 + (1 + callee)))
+    # &block is written to a register instead of stack[3]. When &block is popped and
+    # unspecified_bits is pushed, it must be written to stack[3], not to a register.
+    foo(1, bar: 2, &block)
+  end
+
+  entry # call branch_stub_hit (spill temps)
+  entry # doesn't call branch_stub_hit (not spill temps)
+}
+
+# Test rest and optional_params
+assert_equal '[true, true, true, true]', %q{
+  def my_func(stuff, base=nil, sort=true, *args)
+    [stuff, base, sort, args]
+  end
+
+  def calling_my_func
+    results = []
+    results << (my_func("test") == ["test", nil, true, []])
+    results << (my_func("test", :base) == ["test", :base, true, []])
+    results << (my_func("test", :base, false) == ["test", :base, false, []])
+    results << (my_func("test", :base, false, "other", "other") == ["test", :base, false, ["other", "other"]])
+    results
+  end
+  calling_my_func
+}
+
+# Test rest and optional_params and splat
+assert_equal '[true, true, true, true, true]', %q{
+  def my_func(stuff, base=nil, sort=true, *args)
+    [stuff, base, sort, args]
+  end
+
+  def calling_my_func
+    results = []
+    splat = ["test"]
+    results << (my_func(*splat) == ["test", nil, true, []])
+    splat = [:base]
+    results << (my_func("test", *splat) == ["test", :base, true, []])
+    splat = [:base, false]
+    results << (my_func("test", *splat) == ["test", :base, false, []])
+    splat = [:base, false, "other", "other"]
+    results << (my_func("test", *splat) == ["test", :base, false, ["other", "other"]])
+    splat = ["test", :base, false, "other", "other"]
+    results << (my_func(*splat) == ["test", :base, false, ["other", "other"]])
+    results
+  end
+  calling_my_func
+}
+
+# Regression test: rest and optional and splat
+assert_equal 'true', %q{
+  def my_func(base=nil, *args)
+    [base, args]
+  end
+
+  def calling_my_func
+    array = []
+    my_func(:base, :rest1, *array) == [:base, [:rest1]]
+  end
+
+  calling_my_func
+}
+
+# Fix failed case for large splat
+assert_equal 'true', %q{
+  def d(a, b=:b)
+  end
+
+  def calling_func
+    ary = 1380888.times;
+    d(*ary)
+  end
+  begin
+    calling_func
+  rescue ArgumentError
+    true
+  end
+}
+
+# Regression test: register allocator on expandarray
+assert_equal '[]', %q{
+  func = proc { [] }
+  proc do
+    _x, _y = func.call
+  end.call
+}
+
+# Catch TAG_BREAK in a non-FINISH frame with JIT code
+assert_equal '1', %q{
+  def entry
+    catch_break
+  end
+
+  def catch_break
+    while_true do
+      break
+    end
+    1
+  end
+
+  def while_true
+    while true
+      yield
+    end
+  end
+
+  entry
+}
+
+assert_equal '6', %q{
+  class Base
+    def number = 1 + yield
+  end
+
+  class Sub < Base
+    def number = super + 2
+  end
+
+  Sub.new.number { 3 }
+}
+
+# Integer multiplication and overflow
+assert_equal '[6, -6, 9671406556917033397649408, -9671406556917033397649408, 21267647932558653966460912964485513216]', %q{
+  def foo(a, b)
+    a * b
+  end
+
+  r1 = foo(2, 3)
+  r2 = foo(2, -3)
+  r3 = foo(2 << 40, 2 << 41)
+  r4 = foo(2 << 40, -2 << 41)
+  r5 = foo(1 << 62, 1 << 62)
+
+  [r1, r2, r3, r4, r5]
+}
+
+# Integer multiplication and overflow (minimized regression test from test-basic)
+assert_equal '8515157028618240000', %q{2128789257154560000 * 4}
+
+# Inlined method calls
+assert_equal 'nil', %q{
+  def putnil = nil
+  def entry = putnil
+  entry.inspect
+}
+assert_equal '1', %q{
+  def putobject_1 = 1
+  def entry = putobject_1
+  entry
+}
+assert_equal 'false', %q{
+  def putobject(_unused_arg1) = false
+  def entry = putobject(nil)
+  entry
+}
+assert_equal 'true', %q{
+  def entry = yield
+  entry { true }
+}
+assert_equal 'sym', %q{
+  def entry = :sym.to_sym
+  entry
+}
+
+assert_normal_exit %q{
+  ivars = 1024.times.map { |i| "@iv_#{i} = #{i}\n" }.join
+  Foo = Class.new
+  Foo.class_eval "def initialize() #{ivars} end"
+  Foo.new
+}
+
+assert_equal '0', %q{
+  def spill
+    1.to_i # not inlined
+  end
+
+  def inline(_stack1, _stack2, _stack3, _stack4, _stack5)
+    0 # inlined
+  end
+
+  def entry
+    # RegTemps is 00111110 prior to the #inline call.
+    # Its return value goes to stack_idx=0, which conflicts with stack_idx=5.
+    inline(spill, 2, 3, 4, 5)
+  end
+
+  entry
+}
+
+# Integer succ and overflow
+assert_equal '[2, 4611686018427387904]', %q{
+  [1.succ, 4611686018427387903.succ]
+}
+
+# Integer pred and overflow
+assert_equal '[0, -4611686018427387905]', %q{
+  [1.pred, -4611686018427387904.pred]
+}
+
+# Integer right shift
+assert_equal '[0, 1, -4]', %q{
+  [0 >> 1, 2 >> 1, -7 >> 1]
+}
+
+# Integer XOR
+assert_equal '[0, 0, 4]', %q{
+  [0 ^ 0, 1 ^ 1, 7 ^ 3]
+}
+
+assert_equal '[nil, "yield"]', %q{
+  def defined_yield = defined?(yield)
+  [defined_yield, defined_yield {}]
+}
+
+# splat with ruby2_keywords into rest parameter
+assert_equal '[[{a: 1}], {}]', %q{
+  ruby2_keywords def foo(*args) = args
+
+  def bar(*args, **kw) = [args, kw]
+
+  def pass_bar(*args) = bar(*args)
+
+  def body
+    args = foo(a: 1)
+    pass_bar(*args)
+  end
+
+  body
+}
+
+# concatarray
+assert_equal '[1, 2]', %q{
+  def foo(a, b) = [a, b]
+  arr = [2]
+  foo(*[1], *arr)
+}
+
+# pushtoarray
+assert_equal '[1, 2]', %q{
+  def foo(a, b) = [a, b]
+  arr = [1]
+  foo(*arr, 2)
+}
+
+# pop before fallback
+assert_normal_exit %q{
+  class Foo
+    attr_reader :foo
+
+    def try = foo(0, &nil)
+  end
+
+  Foo.new.try
+}
+
+# a kwrest case
+assert_equal '[1, 2, {complete: false}]', %q{
+  def rest(foo: 1, bar: 2, **kwrest)
+    [foo, bar, kwrest]
+  end
+
+  def callsite = rest(complete: false)
+
+  callsite
+}
+
+# splat+kw_splat+opt+rest
+assert_equal '[1, []]', %q{
+  def opt_rest(a = 0, *rest) = [a, rest]
+
+  def call_site(args) = opt_rest(*args, **nil)
+
+  call_site([1])
+}
+
+# splat and nil kw_splat
+assert_equal 'ok', %q{
+  def identity(x) = x
+
+  def splat_nil_kw_splat(args) = identity(*args, **nil)
+
+  splat_nil_kw_splat([:ok])
+}
+
+# empty splat and kwsplat into leaf builtins
+assert_equal '[1, 1, 1]', %q{
+  empty = []
+  [1.abs(*empty), 1.abs(**nil), 1.bit_length(*empty, **nil)]
+}
+
+# splat into C methods with -1 arity
+assert_equal '[[1, 2, 3], [0, 2, 3], [1, 2, 3], [2, 2, 3], [], [], [{}]]', %q{
+  class Foo < Array
+    def push(args) = super(1, *args)
+  end
+
+  def test_cfunc_vargs_splat(sub_instance, array_class, empty_kw_hash)
+    splat = [2, 3]
+    kw_splat = [empty_kw_hash]
+    [
+      sub_instance.push(splat),
+      array_class[0, *splat, **nil],
+      array_class[1, *splat, &nil],
+      array_class[2, *splat, **nil, &nil],
+      array_class.send(:[], *kw_splat),
+      # kw_splat disables keywords hash handling
+      array_class[*kw_splat],
+      array_class[*kw_splat, **nil],
+    ]
+  end
+
+  test_cfunc_vargs_splat(Foo.new, Array, Hash.ruby2_keywords_hash({}))
+}
+
+# Class#new (arity=-1), splat, and ruby2_keywords
+assert_equal '[0, {1 => 1}]', %q{
+  class KwInit
+    attr_reader :init_args
+    def initialize(x = 0, **kw)
+      @init_args = [x, kw]
+    end
+  end
+
+  def test(klass, args)
+    klass.new(*args).init_args
+  end
+
+  test(KwInit, [Hash.ruby2_keywords_hash({1 => 1})])
+}
+
+# Chilled string setivar trigger warning
+assert_match(/literal string will be frozen in the future/, %q{
+  Warning[:deprecated] = true
+  $VERBOSE = true
+  $warning = "no-warning"
+  module ::Warning
+    def self.warn(message)
+      $warning = message.split("warning: ").last.strip
+    end
+  end
+
+  class String
+    def setivar!
+      @ivar = 42
+    end
+  end
+
+  def setivar!(str)
+    str.setivar!
+  end
+
+  10.times { setivar!("mutable".dup) }
+  10.times do
+    setivar!("frozen".freeze)
+  rescue FrozenError
+  end
+
+  setivar!("chilled") # Emit warning
+  $warning
+})
+
+# arity=-2 cfuncs
+assert_equal '["", "1/2", [0, [:ok, 1]]]', %q{
+  def test_cases(file, chain)
+    new_chain = chain.allocate # to call initialize directly
+    new_chain.send(:initialize, [0], ok: 1)
+
+    [
+      file.join,
+      file.join("1", "2"),
+      new_chain.to_a,
+    ]
+  end
+
+  test_cases(File, Enumerator::Chain)
+}
+
+# singleton class should invalidate Type::CString assumption
+assert_equal 'foo', %q{
+  def define_singleton(str, define)
+    if define
+      # Wrap a C method frame to avoid exiting JIT code on defineclass
+      [nil].reverse_each do
+        class << str
+          def +(_)
+            "foo"
+          end
+        end
+      end
+    end
+    "bar"
+  end
+
+  def entry(define)
+    str = ""
+    # When `define` is false, #+ compiles to rb_str_plus() without a class guard.
+    # When the code is reused with `define` is true, the class of `str` is changed
+    # to a singleton class, so the block should be invalidated.
+    str + define_singleton(str, define)
+  end
+
+  entry(false)
+  entry(true)
+}
+
+assert_equal 'ok', %q{
+  def ok
+    :ok
+  end
+
+  def delegator(...)
+    ok(...)
+  end
+
+  def caller
+    send(:delegator)
+  end
+
+  caller
+}
+
+# test inlining of simple iseqs
+assert_equal '[:ok, :ok, :ok]', %q{
+  def identity(x) = x
+  def foo(x, _) = x
+  def bar(_, _, _, _, x) = x
+
+  def tests
+    [
+      identity(:ok),
+      foo(:ok, 2),
+      bar(1, 2, 3, 4, :ok),
+    ]
+  end
+
+  tests
+}
+
+# test inlining of simple iseqs with kwargs
+assert_equal '[:ok, :ok, :ok, :ok, :ok]', %q{
+  def optional_unused(x, opt: :not_ok) = x
+  def optional_used(x, opt: :ok) = opt
+  def required_unused(x, req:) = x
+  def required_used(x, req:) = req
+  def unknown(x) = x
+
+  def tests
+    [
+      optional_unused(:ok),
+      optional_used(:not_ok),
+      required_unused(:ok, req: :not_ok),
+      required_used(:not_ok, req: :ok),
+      begin unknown(:not_ok, unknown_kwarg: :not_ok) rescue ArgumentError; :ok end,
+    ]
+  end
+
+  tests
+}
+
+# test simple iseqs not eligible for inlining
+assert_equal '[:ok, :ok, :ok, :ok, :ok]', %q{
+  def identity(x) = x
+  def arg_splat(x, *args) = x
+  def kwarg_splat(x, **kwargs) = x
+  def block_arg(x, &blk) = x
+  def block_iseq(x) = x
+  def call_forwarding(...) = identity(...)
+
+  def tests
+    [
+      arg_splat(:ok),
+      kwarg_splat(:ok),
+      block_arg(:ok, &proc { :not_ok }),
+      block_iseq(:ok) { :not_ok },
+      call_forwarding(:ok),
+    ]
+  end
+
+  tests
+}
+
+# regression test for splat with &proc{} when the target has rest (Bug #21266)
+assert_equal '[]', %q{
+  def foo(args) = bar(*args, &proc { _1 })
+  def bar(_, _, _, _, *rest) = yield rest
+
+  GC.stress = true
+  foo([1,2,3,4])
+  foo([1,2,3,4])
+}
+
+# regression test for invalidating an empty block
+assert_equal '0', %q{
+  def foo = (* = 1).pred
+
+  foo # compile it
+
+  class Integer
+    def to_ary = [] # invalidate
+  end
+
+  foo # try again
+}
+
+# test integer left shift with constant rhs
+assert_equal [0x80000000000, 'a+', :ok].inspect, %q{
+  def shift(val) = val << 43
+
+  def tests
+    int = shift(1)
+    str = shift("a")
+
+    Integer.define_method(:<<) { |_| :ok }
+    redef = shift(1)
+
+    [int, str, redef]
+  end
+
+  tests
+}
+
+# test integer left shift fusion followed by opt_getconstant_path
+assert_equal '33', %q{
+  def test(a)
+    (a << 5) | (Object; a)
+  end
+
+  test(1)
+}
+
+# test String#stebyte with arguments that need conversion
+assert_equal "abc", %q{
+  str = +"a00"
+  def change_bytes(str, one, two)
+    str.setbyte(one, "b".ord)
+    str.setbyte(2, two)
+  end
+
+  to_int_1 = Object.new
+  to_int_99 = Object.new
+  def to_int_1.to_int = 1
+  def to_int_99.to_int = 99
+
+  change_bytes(str, to_int_1, to_int_99)
+  str
+}
+
+# test --yjit-verify-ctx for arrays with a singleton class
+assert_equal "ok", %q{
+  class Array
+    def foo
+      self.singleton_class.define_method(:first) { :ok }
+      first
+    end
+  end
+
+  def test = [].foo
+
+  test
+}
+
+assert_equal '["raised", "Module", "Object"]', %q{
+  def foo(obj)
+    obj.superclass.name
+  end
+
+  ret = []
+
+  begin
+    foo(Class.allocate)
+  rescue TypeError
+    ret << 'raised'
+  end
+
+  ret += [foo(Class), foo(Class.new)]
+}
+
+# test TrueClass#=== before and after redefining TrueClass#==
+assert_equal '[[true, false, false], [true, true, false], [true, :error, :error]]', %q{
+  def true_eqq(x)
+    true === x
+  rescue NoMethodError
+    :error
+  end
+
+  def test
+    [
+      # first one is always true because rb_equal does object comparison before calling #==
+      true_eqq(true),
+      # these will use TrueClass#==
+      true_eqq(false),
+      true_eqq(:truthy),
+    ]
+  end
+
+  results = [test]
+
+  class TrueClass
+    def ==(x)
+      !x
+    end
+  end
+
+  results << test
+
+  class TrueClass
+    undef_method :==
+  end
+
+  results << test
+}
+
+# test FalseClass#=== before and after redefining FalseClass#==
+assert_equal '[[true, false, false], [true, false, true], [true, :error, :error]]', %q{
+  def case_equal(x, y)
+    x === y
+  rescue NoMethodError
+    :error
+  end
+
+  def test
+    [
+      # first one is always true because rb_equal does object comparison before calling #==
+      case_equal(false, false),
+      # these will use #==
+      case_equal(false, true),
+      case_equal(false, nil),
+    ]
+  end
+
+  results = [test]
+
+  class FalseClass
+    def ==(x)
+      !x
+    end
+  end
+
+  results << test
+
+  class FalseClass
+    undef_method :==
+  end
+
+  results << test
+}
+
+# test NilClass#=== before and after redefining NilClass#==
+assert_equal '[[true, false, false], [true, false, true], [true, :error, :error]]', %q{
+  def case_equal(x, y)
+    x === y
+  rescue NoMethodError
+    :error
+  end
+
+  def test
+    [
+      # first one is always true because rb_equal does object comparison before calling #==
+      case_equal(nil, nil),
+      # these will use #==
+      case_equal(nil, true),
+      case_equal(nil, false),
+    ]
+  end
+
+  results = [test]
+
+  class NilClass
+    def ==(x)
+      !x
+    end
+  end
+
+  results << test
+
+  class NilClass
+    undef_method :==
+  end
+
+  results << test
+}
+
+# test struct accessors fire c_call events
+assert_equal '[[:c_call, :x=], [:c_call, :x]]', %q{
+  c = Struct.new(:x)
+  obj = c.new
+
+  events = []
+  TracePoint.new(:c_call) do
+    events << [_1.event, _1.method_id]
+  end.enable do
+    obj.x = 100
+    obj.x
+  end
+
+  events
+}
+
+# regression test for splatting empty array
+assert_equal '1', %q{
+  def callee(foo) = foo
+
+  def test_body(args) = callee(1, *args)
+
+  test_body([])
+  array = Array.new(100)
+  array.clear
+  test_body(array)
+}
+
+# regression test for splatting empty array to cfunc
+assert_normal_exit %q{
+  def test_body(args) = Array(1, *args)
+
+  test_body([])
+  0x100.times do
+    array = Array.new(100)
+    array.clear
+    test_body(array)
+  end
+}
+
+# compiling code shouldn't emit warnings as it may call into more Ruby code
+assert_equal 'ok', <<~'RUBY'
+  # [Bug #20522]
+  $VERBOSE = true
+  Warning[:performance] = true
+
+  module StrictWarnings
+    def warn(msg, **)
+      raise msg
+    end
+  end
+  Warning.singleton_class.prepend(StrictWarnings)
+
+  class A
+    def compiled_method(is_private)
+      @some_ivar = is_private
+    end
+  end
+
+  shape_max_variations = 8
+  if defined?(RubyVM::Shape::SHAPE_MAX_VARIATIONS) && RubyVM::Shape::SHAPE_MAX_VARIATIONS != shape_max_variations
+    raise "Expected SHAPE_MAX_VARIATIONS to be #{shape_max_variations}, got: #{RubyVM::Shape::SHAPE_MAX_VARIATIONS}"
+  end
+
+  100.times do |i|
+    klass = Class.new(A)
+    (shape_max_variations - 1).times do |j|
+      obj = klass.new
+      obj.instance_variable_set("@base_#{i}", 42)
+      obj.instance_variable_set("@ivar_#{j}", 42)
+    end
+    obj = klass.new
+    obj.instance_variable_set("@base_#{i}", 42)
+    begin
+      obj.compiled_method(true)
+    rescue
+      # expected
+    end
+  end
+
+  :ok
+RUBY
+
+assert_equal 'ok', <<~'RUBY'
+  class MyRelation
+    def callee(...)
+      :ok
+    end
+
+    def uncached(...)
+      callee(...)
+    end
+
+    def takes_block(&block)
+      # push blockhandler
+      uncached(&block) # CI1
+    end
+  end
+
+  relation = MyRelation.new
+  relation.takes_block { }
+RUBY
+
+assert_equal 'ok', <<~'RUBY'
+  def _exec_scope(...)
+    instance_exec(...)
+  end
+
+  def ok args, body
+    _exec_scope(*args, &body)
+  end
+
+  ok([], -> { "ok" })
+RUBY
+
+assert_equal 'ok', <<~'RUBY'
+  def _exec_scope(...)
+    instance_exec(...)
+  end
+
+  def ok args, body
+    _exec_scope(*args, &body)
+  end
+
+  ok(["ok"], ->(x) { x })
+RUBY
+
+assert_equal 'ok', <<~'RUBY'
+def baz(a, b)
+  a + b
+end
+
+def bar(...)
+  baz(...)
+end
+
+def foo(a, ...)
+  bar(a, ...)
+end
+
+def test
+  foo("o", "k")
+end
+
+test
+RUBY
+
+# opt_newarray_send pack/buffer
+assert_equal '[true, true]', <<~'RUBY'
+  def pack
+    v = 1.23
+    [v, v*2, v*3].pack("E*").unpack("E*") == [v, v*2, v*3]
+  end
+
+  def with_buffer
+    v = 4.56
+    b = +"x"
+    [v, v*2, v*3].pack("E*", buffer: b)
+    b[1..].unpack("E*") == [v, v*2, v*3]
+  end
+
+  [pack, with_buffer]
+RUBY
+
+# String#[] / String#slice
+assert_equal 'ok', <<~'RUBY'
+  def error(klass)
+    yield
+  rescue klass
+    true
+  end
+
+  def test
+    str = "こんにちは"
+    substr = "にち"
+    failures = []
+
+    # Use many small statements to keep context for each slice call smaller than MAX_CTX_TEMPS
+
+    str[1] == "ん" && str.slice(4) == "は" || failures << :index
+    str[5].nil? && str.slice(5).nil? || failures << :index_end
+
+    str[1, 2] == "んに" && str.slice(2, 1) == "に" || failures << :beg_len
+    str[5, 1] == "" && str.slice(5, 1) == "" || failures << :beg_len_end
+
+    str[1..2] == "んに" && str.slice(2..2) == "に" || failures << :range
+
+    str[/に./] == "にち" && str.slice(/に./) == "にち" || failures << :regexp
+
+    str[/に./, 0] == "にち" && str.slice(/に./, 0) == "にち" || failures << :regexp_cap0
+
+    str[/に(.)/, 1] == "ち" && str.slice(/に(.)/, 1) == "ち" || failures << :regexp_cap1
+
+    str[substr] == substr && str.slice(substr) == substr || failures << :substr
+
+    error(TypeError) { str[Object.new] } && error(TypeError) { str.slice(Object.new, 1) } || failures << :type_error
+    error(RangeError) { str[Float::INFINITY] } && error(RangeError) { str.slice(Float::INFINITY) } || failures << :range_error
+
+    return "ok" if failures.empty?
+    {failures: failures}
+  end
+
+  test
+RUBY
+
+# opt_duparray_send :include?
+assert_equal '[true, false]', <<~'RUBY'
+  def test(x)
+    [:a, :b].include?(x)
+  end
+
+  [
+    test(:b),
+    test(:c),
+  ]
+RUBY
+
+# opt_newarray_send :include?
+assert_equal '[true, false]', <<~'RUBY'
+  def test(x)
+    [Object.new, :a, :b].include?(x.to_sym)
+  end
+
+  [
+    test("b"),
+    test("c"),
+  ]
+RUBY
+
+# YARV: swap and opt_reverse
+assert_equal '["x", "Y", "c", "A", "t", "A", "b", "C", "d"]', <<~'RUBY'
+  class Swap
+    def initialize(s)
+      @a, @b, @c, @d = s.split("")
+    end
+
+    def swap
+      a, b = @a, @b
+      b = b.upcase
+      @a, @b = a, b
+    end
+
+    def reverse_odd
+      a, b, c = @a, @b, @c
+      b = b.upcase
+      @a, @b, @c = a, b, c
+    end
+
+    def reverse_even
+      a, b, c, d = @a, @b, @c, @d
+      a = a.upcase
+      c = c.upcase
+      @a, @b, @c, @d = a, b, c, d
+    end
+  end
+
+  Swap.new("xy").swap + Swap.new("cat").reverse_odd + Swap.new("abcd").reverse_even
+RUBY
+
+assert_normal_exit %{
+  class Bug20997
+    def foo(&) = self.class.name(&)
+
+    new.foo
+  end
+}
+
+# This used to trigger a "try to mark T_NONE"
+# due to an uninitialized local in foo.
+assert_normal_exit %{
+  def foo(...)
+    _local_that_should_nil_on_call = GC.start
+  end
+
+  def test_bug21021
+    puts [], [], [], [], [], []
+    foo []
+  end
+
+  GC.stress = true
+  test_bug21021
+}
+
+assert_equal 'nil', %{
+  def foo(...)
+    _a = _b = _c = binding.local_variable_get(:_c)
+
+    _c
+  end
+
+  # [Bug #21021]
+  def test_local_fill_in_forwardable
+    puts [], [], [], [], []
+    foo []
+  end
+
+  test_local_fill_in_forwardable.inspect
+}
+
+# Test defined?(yield) and block_given? in non-method context.
+# It's good that the body of this runs at true top level and isn't wrapped in a block.
+assert_equal 'false', %{
+  RESULT = []
+  RESULT << defined?(yield)
+  RESULT << block_given?
+
+  1.times do
+    RESULT << defined?(yield)
+    RESULT << block_given?
+  end
+
+  module ModuleContext
+    1.times do
+      RESULT << defined?(yield)
+      RESULT << block_given?
+    end
+  end
+
+  class << self
+    RESULT << defined?(yield)
+    RESULT << block_given?
+  end
+
+  RESULT.any?
+}
+
+# throw and String#dup with GC stress
+assert_equal 'foo', %{
+  GC.stress = true
+
+  def foo
+    1.times { return "foo".dup }
+  end
+
+  10.times.map { foo.dup }.last
+}
+
+# regression test for [Bug #21772]
+# local variable type tracking desync
+assert_normal_exit %q{
+  def some_method = 0
+
+  def test_body(key)
+    some_method
+    key = key.to_s # setting of local relevant
+
+    key == "symbol"
+  end
+
+  def jit_caller = test_body("session_id")
+
+  jit_caller # first iteration, non-escaped environment
+  alias some_method binding # induce environment escape
+  test_body(:symbol)
+}
+
+# regression test for missing check in identity method inlining
+assert_normal_exit %q{
+  # Use dead code (if false) to create a local
+  # without initialization instructions.
+  def foo(a)
+    if false
+      x = nil
+    end
+    x
+  end
+  def test = foo(1)
+  test
+  test
+}
diff --git a/bootstraptest/test_yjit_rust_port.rb b/bootstraptest/test_yjit_rust_port.rb
index e399e0e49e..2dbcebc03a 100644
--- a/bootstraptest/test_yjit_rust_port.rb
+++ b/bootstraptest/test_yjit_rust_port.rb
@@ -374,7 +374,7 @@ assert_equal 'ok', %q{
   r = Ractor.new do
     'ok'
   end
-  r.take
+  r.value
 }
 
 # Passed arguments to Ractor.new will be a block parameter
@@ -384,7 +384,7 @@ assert_equal 'ok', %q{
   r = Ractor.new 'ok' do |msg|
     msg
   end
-  r.take
+  r.value
 }
 
 # Pass multiple arguments to Ractor.new
@@ -393,7 +393,7 @@ assert_equal 'ok', %q{
   r =  Ractor.new 'ping', 'pong' do |msg, msg2|
     [msg, msg2]
   end
-  'ok' if r.take == ['ping', 'pong']
+  'ok' if r.value == ['ping', 'pong']
 }
 
 # Ractor#send passes an object with copy to a Ractor
@@ -403,7 +403,7 @@ assert_equal 'ok', %q{
     msg = Ractor.receive
   end
   r.send 'ok'
-  r.take
+  r.value
 }
 
 assert_equal '[1, 2, 3]', %q{
diff --git a/box.c b/box.c
new file mode 100644
index 0000000000..830172cdd5
--- /dev/null
+++ b/box.c
@@ -0,0 +1,1220 @@
+/* indent-tabs-mode: nil */
+
+#include "eval_intern.h"
+#include "internal.h"
+#include "internal/box.h"
+#include "internal/class.h"
+#include "internal/eval.h"
+#include "internal/error.h"
+#include "internal/file.h"
+#include "internal/gc.h"
+#include "internal/hash.h"
+#include "internal/io.h"
+#include "internal/load.h"
+#include "internal/st.h"
+#include "internal/variable.h"
+#include "iseq.h"
+#include "ruby/internal/globals.h"
+#include "ruby/util.h"
+#include "vm_core.h"
+#include "darray.h"
+
+#include <stdio.h>
+
+#ifdef HAVE_SYS_SENDFILE_H
+# include <sys/sendfile.h>
+#endif
+#ifdef HAVE_COPYFILE_H
+#include <copyfile.h>
+#endif
+
+VALUE rb_cBox = 0;
+VALUE rb_cBoxEntry = 0;
+VALUE rb_mBoxLoader = 0;
+
+static rb_box_t root_box[1]; /* Initialize in initialize_root_box() */
+static rb_box_t *main_box;
+static char *tmp_dir;
+static bool tmp_dir_has_dirsep;
+
+#define BOX_TMP_PREFIX "_ruby_box_"
+
+#ifndef MAXPATHLEN
+# define MAXPATHLEN 1024
+#endif
+
+#if defined(_WIN32)
+# define DIRSEP "\\"
+#else
+# define DIRSEP "/"
+#endif
+
+bool ruby_box_enabled = false; // extern
+bool ruby_box_init_done = false; // extern
+bool ruby_box_crashed = false; // extern, changed only in vm.c
+
+VALUE rb_resolve_feature_path(VALUE klass, VALUE fname);
+static VALUE rb_box_inspect(VALUE obj);
+static void cleanup_all_local_extensions(VALUE libmap);
+
+void
+rb_box_init_done(void)
+{
+    ruby_box_init_done = true;
+}
+
+const rb_box_t *
+rb_root_box(void)
+{
+    return root_box;
+}
+
+const rb_box_t *
+rb_main_box(void)
+{
+    return main_box;
+}
+
+const rb_box_t *
+rb_current_box(void)
+{
+    /*
+     * If RUBY_BOX is not set, the root box is the only available one.
+     *
+     * Until the main_box is not initialized, the root box is
+     * the only valid box.
+     * This early return is to avoid accessing EC before its setup.
+     */
+    if (!main_box)
+        return root_box;
+
+    return rb_vm_current_box(GET_EC());
+}
+
+const rb_box_t *
+rb_loading_box(void)
+{
+    if (!main_box)
+        return root_box;
+
+    return rb_vm_loading_box(GET_EC());
+}
+
+const rb_box_t *
+rb_current_box_in_crash_report(void)
+{
+    if (ruby_box_crashed)
+        return NULL;
+    return rb_current_box();
+}
+
+static long box_id_counter = 0;
+
+static long
+box_generate_id(void)
+{
+    long id;
+    RB_VM_LOCKING() {
+        id = ++box_id_counter;
+    }
+    return id;
+}
+
+static VALUE
+box_main_to_s(VALUE obj)
+{
+    return rb_str_new2("main");
+}
+
+static void
+box_entry_initialize(rb_box_t *box)
+{
+    const rb_box_t *root = rb_root_box();
+
+    // These will be updated immediately
+    box->box_object = 0;
+    box->box_id = 0;
+
+    box->top_self = rb_obj_alloc(rb_cObject);
+    rb_define_singleton_method(box->top_self, "to_s", box_main_to_s, 0);
+    rb_define_alias(rb_singleton_class(box->top_self), "inspect", "to_s");
+    box->load_path = rb_ary_dup(root->load_path);
+    box->expanded_load_path = rb_ary_dup(root->expanded_load_path);
+    box->load_path_snapshot = rb_ary_new();
+    box->load_path_check_cache = 0;
+    box->loaded_features = rb_ary_dup(root->loaded_features);
+    box->loaded_features_snapshot = rb_ary_new();
+    box->loaded_features_index = st_init_numtable();
+    box->loaded_features_realpaths = rb_hash_dup(root->loaded_features_realpaths);
+    box->loaded_features_realpath_map = rb_hash_dup(root->loaded_features_realpath_map);
+    box->loading_table = st_init_strtable();
+    box->ruby_dln_libmap = rb_hash_new_with_size(0);
+    box->gvar_tbl = rb_hash_new_with_size(0);
+    box->classext_cow_classes = st_init_numtable();
+
+    box->is_user = true;
+    box->is_optional = true;
+}
+
+void
+rb_box_gc_update_references(void *ptr)
+{
+    rb_box_t *box = (rb_box_t *)ptr;
+    if (!box) return;
+
+    if (box->box_object)
+        box->box_object = rb_gc_location(box->box_object);
+    if (box->top_self)
+        box->top_self = rb_gc_location(box->top_self);
+    box->load_path = rb_gc_location(box->load_path);
+    box->expanded_load_path = rb_gc_location(box->expanded_load_path);
+    box->load_path_snapshot = rb_gc_location(box->load_path_snapshot);
+    if (box->load_path_check_cache) {
+        box->load_path_check_cache = rb_gc_location(box->load_path_check_cache);
+    }
+    box->loaded_features = rb_gc_location(box->loaded_features);
+    box->loaded_features_snapshot = rb_gc_location(box->loaded_features_snapshot);
+    box->loaded_features_realpaths = rb_gc_location(box->loaded_features_realpaths);
+    box->loaded_features_realpath_map = rb_gc_location(box->loaded_features_realpath_map);
+    box->ruby_dln_libmap = rb_gc_location(box->ruby_dln_libmap);
+    box->gvar_tbl = rb_gc_location(box->gvar_tbl);
+}
+
+void
+rb_box_entry_mark(void *ptr)
+{
+    const rb_box_t *box = (rb_box_t *)ptr;
+    if (!box) return;
+
+    rb_gc_mark(box->box_object);
+    rb_gc_mark(box->top_self);
+    rb_gc_mark(box->load_path);
+    rb_gc_mark(box->expanded_load_path);
+    rb_gc_mark(box->load_path_snapshot);
+    rb_gc_mark(box->load_path_check_cache);
+    rb_gc_mark(box->loaded_features);
+    rb_gc_mark(box->loaded_features_snapshot);
+    rb_gc_mark(box->loaded_features_realpaths);
+    rb_gc_mark(box->loaded_features_realpath_map);
+    if (box->loading_table) {
+        rb_mark_tbl(box->loading_table);
+    }
+    rb_gc_mark(box->ruby_dln_libmap);
+    rb_gc_mark(box->gvar_tbl);
+    if (box->classext_cow_classes) {
+        rb_mark_tbl(box->classext_cow_classes);
+    }
+}
+
+static int
+free_loading_table_entry(st_data_t key, st_data_t value, st_data_t arg)
+{
+    xfree((char *)key);
+    return ST_DELETE;
+}
+
+static int
+free_loaded_feature_index_i(st_data_t key, st_data_t value, st_data_t arg)
+{
+    if (!FIXNUM_P(value)) {
+        rb_darray_free((void *)value);
+    }
+    return ST_CONTINUE;
+}
+
+static void
+box_root_free(void *ptr)
+{
+    rb_box_t *box = (rb_box_t *)ptr;
+    if (box->loading_table) {
+        st_foreach(box->loading_table, free_loading_table_entry, 0);
+        st_free_table(box->loading_table);
+        box->loading_table = 0;
+    }
+
+    if (box->loaded_features_index) {
+        st_foreach(box->loaded_features_index, free_loaded_feature_index_i, 0);
+        st_free_table(box->loaded_features_index);
+    }
+}
+
+static int
+free_classext_for_box(st_data_t _key, st_data_t obj_value, st_data_t box_arg)
+{
+    rb_classext_t *ext;
+    VALUE obj = (VALUE)obj_value;
+    const rb_box_t *box = (const rb_box_t *)box_arg;
+
+    if (RB_TYPE_P(obj, T_CLASS) || RB_TYPE_P(obj, T_MODULE)) {
+        ext = rb_class_unlink_classext(obj, box);
+        rb_class_classext_free(obj, ext, false);
+    }
+    else if (RB_TYPE_P(obj, T_ICLASS)) {
+        ext = rb_class_unlink_classext(obj, box);
+        rb_iclass_classext_free(obj, ext, false);
+    }
+    else {
+        rb_bug("Invalid type of object in classext_cow_classes: %s", rb_type_str(BUILTIN_TYPE(obj)));
+    }
+    return ST_CONTINUE;
+}
+
+static void
+box_entry_free(void *ptr)
+{
+    const rb_box_t *box = (const rb_box_t *)ptr;
+
+    if (box->classext_cow_classes) {
+        st_foreach(box->classext_cow_classes, free_classext_for_box, (st_data_t)box);
+    }
+
+    cleanup_all_local_extensions(box->ruby_dln_libmap);
+
+    box_root_free(ptr);
+    xfree(ptr);
+}
+
+static size_t
+box_entry_memsize(const void *ptr)
+{
+    size_t size = sizeof(rb_box_t);
+    const rb_box_t *box = (const rb_box_t *)ptr;
+    if (box->loaded_features_index) {
+        size += rb_st_memsize(box->loaded_features_index);
+    }
+    if (box->loading_table) {
+        size += rb_st_memsize(box->loading_table);
+    }
+    return size;
+}
+
+static const rb_data_type_t rb_box_data_type = {
+    "Ruby::Box::Entry",
+    {
+        rb_box_entry_mark,
+        box_entry_free,
+        box_entry_memsize,
+        rb_box_gc_update_references,
+    },
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY // TODO: enable RUBY_TYPED_WB_PROTECTED when inserting write barriers
+};
+
+static const rb_data_type_t rb_root_box_data_type = {
+    "Ruby::Box::Root",
+    {
+        rb_box_entry_mark,
+        box_root_free,
+        box_entry_memsize,
+        rb_box_gc_update_references,
+    },
+    &rb_box_data_type, 0, RUBY_TYPED_FREE_IMMEDIATELY // TODO: enable RUBY_TYPED_WB_PROTECTED when inserting write barriers
+};
+
+VALUE
+rb_box_entry_alloc(VALUE klass)
+{
+    rb_box_t *entry;
+    VALUE obj = TypedData_Make_Struct(klass, rb_box_t, &rb_box_data_type, entry);
+    box_entry_initialize(entry);
+    return obj;
+}
+
+static rb_box_t *
+get_box_struct_internal(VALUE entry)
+{
+    rb_box_t *sval;
+    TypedData_Get_Struct(entry, rb_box_t, &rb_box_data_type, sval);
+    return sval;
+}
+
+rb_box_t *
+rb_get_box_t(VALUE box)
+{
+    VALUE entry;
+    ID id_box_entry;
+
+    VM_ASSERT(box);
+
+    if (NIL_P(box))
+        return root_box;
+
+    VM_ASSERT(BOX_OBJ_P(box));
+
+    CONST_ID(id_box_entry, "__box_entry__");
+    entry = rb_attr_get(box, id_box_entry);
+    return get_box_struct_internal(entry);
+}
+
+VALUE
+rb_get_box_object(rb_box_t *box)
+{
+    VM_ASSERT(box && box->box_object);
+    return box->box_object;
+}
+
+/*
+ *  call-seq:
+ *    Ruby::Box.new -> new_box
+ *
+ *  Returns a new Ruby::Box object.
+ */
+static VALUE
+box_initialize(VALUE box_value)
+{
+    rb_box_t *box;
+    rb_classext_t *object_classext;
+    VALUE entry;
+    ID id_box_entry;
+    CONST_ID(id_box_entry, "__box_entry__");
+
+    if (!rb_box_available()) {
+        rb_raise(rb_eRuntimeError, "Ruby Box is disabled. Set RUBY_BOX=1 environment variable to use Ruby::Box.");
+    }
+
+    entry = rb_class_new_instance_pass_kw(0, NULL, rb_cBoxEntry);
+    box = get_box_struct_internal(entry);
+
+    box->box_object = box_value;
+    box->box_id = box_generate_id();
+    rb_define_singleton_method(box->load_path, "resolve_feature_path", rb_resolve_feature_path, 1);
+
+    // Set the Ruby::Box object unique/consistent from any boxes to have just single
+    // constant table from any view of every (including main) box.
+    // If a code in the box adds a constant, the constant will be visible even from root/main.
+    RCLASS_SET_PRIME_CLASSEXT_WRITABLE(box_value, true);
+
+    // Get a clean constant table of Object even by writable one
+    // because ns was just created, so it has not touched any constants yet.
+    object_classext = RCLASS_EXT_WRITABLE_IN_BOX(rb_cObject, box);
+    RCLASS_SET_CONST_TBL(box_value, RCLASSEXT_CONST_TBL(object_classext), true);
+
+    rb_ivar_set(box_value, id_box_entry, entry);
+
+    return box_value;
+}
+
+/*
+ *  call-seq:
+ *    Ruby::Box.enabled? -> true or false
+ *
+ *  Returns +true+ if Ruby::Box is enabled.
+ */
+static VALUE
+rb_box_s_getenabled(VALUE recv)
+{
+    return RBOOL(rb_box_available());
+}
+
+/*
+ *  call-seq:
+ *    Ruby::Box.current -> box, nil or false
+ *
+ *  Returns the current box.
+ *  Returns +nil+ if Ruby Box is not enabled.
+ */
+static VALUE
+rb_box_s_current(VALUE recv)
+{
+    const rb_box_t *box;
+
+    if (!rb_box_available())
+        return Qnil;
+
+    box = rb_vm_current_box(GET_EC());
+    VM_ASSERT(box && box->box_object);
+    return box->box_object;
+}
+
+/*
+ *  call-seq:
+ *    load_path -> array
+ *
+ *  Returns box local load path.
+ */
+static VALUE
+rb_box_load_path(VALUE box)
+{
+    VM_ASSERT(BOX_OBJ_P(box));
+    return rb_get_box_t(box)->load_path;
+}
+
+#ifdef _WIN32
+UINT rb_w32_system_tmpdir(WCHAR *path, UINT len);
+#endif
+
+/* Copied from mjit.c Ruby 3.0.3 */
+static char *
+system_default_tmpdir(void)
+{
+    // c.f. ext/etc/etc.c:etc_systmpdir()
+#ifdef _WIN32
+    WCHAR tmppath[_MAX_PATH];
+    UINT len = rb_w32_system_tmpdir(tmppath, numberof(tmppath));
+    if (len) {
+        int blen = WideCharToMultiByte(CP_UTF8, 0, tmppath, len, NULL, 0, NULL, NULL);
+        char *tmpdir = xmalloc(blen + 1);
+        WideCharToMultiByte(CP_UTF8, 0, tmppath, len, tmpdir, blen, NULL, NULL);
+        tmpdir[blen] = '\0';
+        return tmpdir;
+    }
+#elif defined _CS_DARWIN_USER_TEMP_DIR
+    char path[MAXPATHLEN];
+    size_t len = confstr(_CS_DARWIN_USER_TEMP_DIR, path, sizeof(path));
+    if (len > 0) {
+        char *tmpdir = xmalloc(len);
+        if (len > sizeof(path)) {
+            confstr(_CS_DARWIN_USER_TEMP_DIR, tmpdir, len);
+        }
+        else {
+            memcpy(tmpdir, path, len);
+        }
+        return tmpdir;
+    }
+#endif
+    return 0;
+}
+
+static int
+check_tmpdir(const char *dir)
+{
+    struct stat st;
+
+    if (!dir) return FALSE;
+    if (stat(dir, &st)) return FALSE;
+#ifndef S_ISDIR
+#   define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+#endif
+    if (!S_ISDIR(st.st_mode)) return FALSE;
+#ifndef _WIN32
+# ifndef S_IWOTH
+#   define S_IWOTH 002
+# endif
+    if (st.st_mode & S_IWOTH) {
+# ifdef S_ISVTX
+        if (!(st.st_mode & S_ISVTX)) return FALSE;
+# else
+        return FALSE;
+# endif
+    }
+    if (access(dir, W_OK)) return FALSE;
+#endif
+    return TRUE;
+}
+
+static char *
+system_tmpdir(void)
+{
+    char *tmpdir;
+# define RETURN_ENV(name) \
+    if (check_tmpdir(tmpdir = getenv(name))) return ruby_strdup(tmpdir)
+    RETURN_ENV("TMPDIR");
+    RETURN_ENV("TMP");
+    tmpdir = system_default_tmpdir();
+    if (check_tmpdir(tmpdir)) return tmpdir;
+    return ruby_strdup("/tmp");
+# undef RETURN_ENV
+}
+
+/* end of copy */
+
+static int
+sprint_ext_filename(char *str, size_t size, long box_id, const char *prefix, const char *basename)
+{
+    if (tmp_dir_has_dirsep) {
+        return snprintf(str, size, "%s%sp%"PRI_PIDT_PREFIX"u_%ld_%s", tmp_dir, prefix, getpid(), box_id, basename);
+    }
+    return snprintf(str, size, "%s%s%sp%"PRI_PIDT_PREFIX"u_%ld_%s", tmp_dir, DIRSEP, prefix, getpid(), box_id, basename);
+}
+
+enum copy_error_type {
+    COPY_ERROR_NONE,
+    COPY_ERROR_SRC_OPEN,
+    COPY_ERROR_DST_OPEN,
+    COPY_ERROR_SRC_READ,
+    COPY_ERROR_DST_WRITE,
+    COPY_ERROR_SRC_STAT,
+    COPY_ERROR_DST_CHMOD,
+    COPY_ERROR_SYSERR
+};
+
+static const char *
+copy_ext_file_error(char *message, size_t size, int copy_retvalue)
+{
+#ifdef _WIN32
+    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 = ' ';
+    }
+#else
+    switch (copy_retvalue) {
+      case COPY_ERROR_SRC_OPEN:
+        strlcpy(message, "can't open the extension path", size);
+        break;
+      case COPY_ERROR_DST_OPEN:
+        strlcpy(message, "can't open the file to write", size);
+        break;
+      case COPY_ERROR_SRC_READ:
+        strlcpy(message, "failed to read the extension path", size);
+        break;
+      case COPY_ERROR_DST_WRITE:
+        strlcpy(message, "failed to write the extension path", size);
+        break;
+      case COPY_ERROR_SRC_STAT:
+        strlcpy(message, "failed to stat the extension path to copy permissions", size);
+        break;
+      case COPY_ERROR_DST_CHMOD:
+        strlcpy(message, "failed to set permissions to the copied extension path", size);
+        break;
+      case COPY_ERROR_SYSERR:
+        strlcpy(message, strerror(errno), size);
+        break;
+      case COPY_ERROR_NONE: /* shouldn't be called */
+      default:
+        rb_bug("unknown return value of copy_ext_file: %d", copy_retvalue);
+    }
+#endif
+    return message;
+}
+
+#ifndef _WIN32
+static enum copy_error_type
+copy_stream(int src_fd, int dst_fd)
+{
+    char buffer[1024];
+    ssize_t rsize;
+
+    while ((rsize = read(src_fd, buffer, sizeof(buffer))) != 0) {
+        if (rsize < 0) return COPY_ERROR_SRC_READ;
+        for (size_t written = 0; written < (size_t)rsize;) {
+            ssize_t wsize = write(dst_fd, buffer+written, rsize-written);
+            if (wsize < 0) return COPY_ERROR_DST_WRITE;
+            written += (size_t)wsize;
+        }
+    }
+    return COPY_ERROR_NONE;
+}
+#endif
+
+static enum copy_error_type
+copy_ext_file(const char *src_path, const char *dst_path)
+{
+#if defined(_WIN32)
+    WCHAR *w_src = rb_w32_mbstr_to_wstr(CP_UTF8, src_path, -1, NULL);
+    WCHAR *w_dst = rb_w32_mbstr_to_wstr(CP_UTF8, dst_path, -1, NULL);
+    if (!w_src || !w_dst) {
+        free(w_src);
+        free(w_dst);
+        rb_memerror();
+    }
+
+    enum copy_error_type rvalue = CopyFileW(w_src, w_dst, TRUE) ?
+        COPY_ERROR_NONE : COPY_ERROR_SYSERR;
+    free(w_src);
+    free(w_dst);
+    return rvalue;
+#else
+# ifdef O_BINARY
+    const int bin = O_BINARY;
+# else
+    const int bin = 0;
+# endif
+# ifdef O_CLOEXEC
+    const int cloexec = O_CLOEXEC;
+# else
+    const int cloexec = 0;
+# endif
+    const int src_fd = open(src_path, O_RDONLY|cloexec|bin);
+    if (src_fd < 0) return COPY_ERROR_SRC_OPEN;
+    if (!cloexec) rb_maygvl_fd_fix_cloexec(src_fd);
+
+    struct stat src_st;
+    if (fstat(src_fd, &src_st)) {
+        close(src_fd);
+        return COPY_ERROR_SRC_STAT;
+    }
+
+    const int dst_fd = open(dst_path, O_WRONLY|O_CREAT|O_EXCL|cloexec|bin, S_IRWXU);
+    if (dst_fd < 0) {
+        close(src_fd);
+        return COPY_ERROR_DST_OPEN;
+    }
+    if (!cloexec) rb_maygvl_fd_fix_cloexec(dst_fd);
+
+    enum copy_error_type ret = COPY_ERROR_NONE;
+
+    if (fchmod(dst_fd, src_st.st_mode & 0777)) {
+        ret = COPY_ERROR_DST_CHMOD;
+        goto done;
+    }
+
+    const size_t count_max = (SIZE_MAX >> 1) + 1;
+    (void)count_max;
+
+# ifdef HAVE_COPY_FILE_RANGE
+    for (;;) {
+        ssize_t written = copy_file_range(src_fd, NULL, dst_fd, NULL, count_max, 0);
+        if (written == 0) goto done;
+        if (written < 0) break;
+    }
+# endif
+# ifdef HAVE_FCOPYFILE
+    if (fcopyfile(src_fd, dst_fd, NULL, COPYFILE_DATA) == 0) {
+        goto done;
+    }
+# endif
+# ifdef USE_SENDFILE
+    for (;;) {
+        ssize_t written = sendfile(src_fd, dst_fd, NULL count_max);
+        if (written == 0) goto done;
+        if (written < 0) break;
+    }
+# endif
+    ret = copy_stream(src_fd, dst_fd);
+
+  done:
+    close(src_fd);
+    if (dst_fd >= 0) close(dst_fd);
+    if (ret != COPY_ERROR_NONE) unlink(dst_path);
+    return ret;
+#endif
+}
+
+#if defined __CYGWIN__ || defined DOSISH
+#define isdirsep(x) ((x) == '/' || (x) == '\\')
+#else
+#define isdirsep(x) ((x) == '/')
+#endif
+
+#define IS_SOEXT(e) (strcmp((e), ".so") == 0 || strcmp((e), ".o") == 0)
+#define IS_DLEXT(e) (strcmp((e), DLEXT) == 0)
+
+static void
+fname_without_suffix(const char *fname, char *rvalue, size_t rsize)
+{
+    size_t len = strlen(fname);
+    const char *pos;
+    for (pos = fname + len; pos > fname; pos--) {
+        if (IS_SOEXT(pos) || IS_DLEXT(pos)) {
+            len = pos - fname;
+            break;
+        }
+        if (fname + len - pos > DLEXT_MAXLEN) break;
+    }
+    if (len > rsize - 1) len = rsize - 1;
+    memcpy(rvalue, fname, len);
+    rvalue[len] = '\0';
+}
+
+static void
+escaped_basename(const char *path, const char *fname, char *rvalue, size_t rsize)
+{
+    char *pos;
+    const char *leaf = path, *found;
+    // `leaf + 1` looks uncomfortable (when leaf == path), but fname must not be the top-dir itself
+    while ((found = strstr(leaf + 1, fname)) != NULL) {
+        leaf = found; // find the last occurrence for the path like /etc/my-crazy-lib-dir/etc.so
+    }
+    strlcpy(rvalue, leaf, rsize);
+    for (pos = rvalue; *pos; pos++) {
+        if (isdirsep(*pos)) {
+            *pos = '+';
+        }
+    }
+}
+
+static void
+box_ext_cleanup_mark(void *p)
+{
+    rb_gc_mark((VALUE)p);
+}
+
+static void
+box_ext_cleanup_free(void *p)
+{
+    VALUE path = (VALUE)p;
+    unlink(RSTRING_PTR(path));
+}
+
+static const rb_data_type_t box_ext_cleanup_type = {
+    "box_ext_cleanup",
+    {box_ext_cleanup_mark, box_ext_cleanup_free},
+    .flags = RUBY_TYPED_FREE_IMMEDIATELY,
+};
+
+void
+rb_box_cleanup_local_extension(VALUE cleanup)
+{
+    void *p = DATA_PTR(cleanup);
+    DATA_PTR(cleanup) = NULL;
+#ifndef _WIN32
+    if (p) box_ext_cleanup_free(p);
+#endif
+    (void)p;
+}
+
+static int
+cleanup_local_extension_i(VALUE key, VALUE value, VALUE arg)
+{
+#if defined(_WIN32)
+    HMODULE h = (HMODULE)NUM2PTR(value);
+    WCHAR module_path[MAXPATHLEN];
+    DWORD len = GetModuleFileNameW(h, module_path, numberof(module_path));
+
+    FreeLibrary(h);
+    if (len > 0 && len < numberof(module_path)) DeleteFileW(module_path);
+#endif
+    return ST_DELETE;
+}
+
+static void
+cleanup_all_local_extensions(VALUE libmap)
+{
+    rb_hash_foreach(libmap, cleanup_local_extension_i, 0);
+}
+
+VALUE
+rb_box_local_extension(VALUE box_value, VALUE fname, VALUE path, VALUE *cleanup)
+{
+    char ext_path[MAXPATHLEN], fname2[MAXPATHLEN], basename[MAXPATHLEN];
+    int wrote;
+    const char *src_path = RSTRING_PTR(path), *fname_ptr = RSTRING_PTR(fname);
+    rb_box_t *box = rb_get_box_t(box_value);
+
+    fname_without_suffix(fname_ptr, fname2, sizeof(fname2));
+    escaped_basename(src_path, fname2, basename, sizeof(basename));
+
+    wrote = sprint_ext_filename(ext_path, sizeof(ext_path), box->box_id, BOX_TMP_PREFIX, basename);
+    if (wrote >= (int)sizeof(ext_path)) {
+        rb_bug("Extension file path in the box was too long");
+    }
+    VALUE new_path = rb_str_new_cstr(ext_path);
+    *cleanup = TypedData_Wrap_Struct(0, &box_ext_cleanup_type, NULL);
+    enum copy_error_type copy_error = copy_ext_file(src_path, ext_path);
+    if (copy_error) {
+        char message[1024];
+        copy_ext_file_error(message, sizeof(message), copy_error);
+        rb_raise(rb_eLoadError, "can't prepare the extension file for Ruby Box (%s from %"PRIsVALUE"): %s", ext_path, path, message);
+    }
+    DATA_PTR(*cleanup) = (void *)new_path;
+    return new_path;
+}
+
+static VALUE
+rb_box_load(int argc, VALUE *argv, VALUE box)
+{
+    VALUE fname, wrap;
+    rb_scan_args(argc, argv, "11", &fname, &wrap);
+
+    rb_vm_frame_flag_set_box_require(GET_EC());
+
+    VALUE args = rb_ary_new_from_args(2, fname, wrap);
+    return rb_load_entrypoint(args);
+}
+
+static VALUE
+rb_box_require(VALUE box, VALUE fname)
+{
+    rb_vm_frame_flag_set_box_require(GET_EC());
+
+    return rb_require_string(fname);
+}
+
+static VALUE
+rb_box_require_relative(VALUE box, VALUE fname)
+{
+    rb_vm_frame_flag_set_box_require(GET_EC());
+
+    return rb_require_relative_entrypoint(fname);
+}
+
+static void
+initialize_root_box(void)
+{
+    rb_vm_t *vm = GET_VM();
+    rb_box_t *root = (rb_box_t *)rb_root_box();
+
+    root->load_path = rb_ary_new();
+    root->expanded_load_path = rb_ary_hidden_new(0);
+    root->load_path_snapshot = rb_ary_hidden_new(0);
+    root->load_path_check_cache = 0;
+    rb_define_singleton_method(root->load_path, "resolve_feature_path", rb_resolve_feature_path, 1);
+
+    root->loaded_features = rb_ary_new();
+    root->loaded_features_snapshot = rb_ary_hidden_new(0);
+    root->loaded_features_index = st_init_numtable();
+    root->loaded_features_realpaths = rb_hash_new();
+    rb_obj_hide(root->loaded_features_realpaths);
+    root->loaded_features_realpath_map = rb_hash_new();
+    rb_obj_hide(root->loaded_features_realpath_map);
+
+    root->ruby_dln_libmap = rb_hash_new_with_size(0);
+    root->gvar_tbl = rb_hash_new_with_size(0);
+    root->classext_cow_classes = NULL; // classext CoW never happen on the root box
+
+    vm->root_box = root;
+
+    if (rb_box_available()) {
+        VALUE root_box, entry;
+        ID id_box_entry;
+        CONST_ID(id_box_entry, "__box_entry__");
+
+        root_box = rb_obj_alloc(rb_cBox);
+        RCLASS_SET_PRIME_CLASSEXT_WRITABLE(root_box, true);
+        RCLASS_SET_CONST_TBL(root_box, RCLASSEXT_CONST_TBL(RCLASS_EXT_PRIME(rb_cObject)), true);
+
+        root->box_id = box_generate_id();
+        root->box_object = root_box;
+
+        entry = TypedData_Wrap_Struct(rb_cBoxEntry, &rb_root_box_data_type, root);
+        rb_ivar_set(root_box, id_box_entry, entry);
+    }
+    else {
+        root->box_id = 1;
+        root->box_object = Qnil;
+    }
+}
+
+static VALUE
+rb_box_eval(VALUE box_value, VALUE str)
+{
+    const rb_iseq_t *iseq;
+    const rb_box_t *box;
+
+    StringValue(str);
+
+    iseq = rb_iseq_compile_iseq(str, rb_str_new_cstr("eval"));
+    VM_ASSERT(iseq);
+
+    box = (const rb_box_t *)rb_get_box_t(box_value);
+
+    return rb_iseq_eval(iseq, box);
+}
+
+static int box_experimental_warned = 0;
+
+RUBY_EXTERN const char ruby_api_version_name[];
+
+void
+rb_initialize_main_box(void)
+{
+    rb_box_t *box;
+    VALUE main_box_value;
+    rb_vm_t *vm = GET_VM();
+
+    VM_ASSERT(rb_box_available());
+
+    if (!box_experimental_warned) {
+        rb_category_warn(RB_WARN_CATEGORY_EXPERIMENTAL,
+                         "Ruby::Box is experimental, and the behavior may change in the future!\n"
+                         "See https://docs.ruby-lang.org/en/%s/Ruby/Box.html for known issues, etc.",
+                         ruby_api_version_name);
+        box_experimental_warned = 1;
+    }
+
+    main_box_value = rb_class_new_instance(0, NULL, rb_cBox);
+    VM_ASSERT(BOX_OBJ_P(main_box_value));
+    box = rb_get_box_t(main_box_value);
+    box->box_object = main_box_value;
+    box->is_user = true;
+    box->is_optional = false;
+
+    rb_const_set(rb_cBox, rb_intern("MAIN"), main_box_value);
+
+    vm->main_box = main_box = box;
+
+    // create the writable classext of ::Object explicitly to finalize the set of visible top-level constants
+    RCLASS_EXT_WRITABLE_IN_BOX(rb_cObject, box);
+}
+
+static VALUE
+rb_box_inspect(VALUE obj)
+{
+    rb_box_t *box;
+    VALUE r;
+    if (obj == Qfalse) {
+        r = rb_str_new_cstr("#<Ruby::Box:root>");
+        return r;
+    }
+    box = rb_get_box_t(obj);
+    r = rb_str_new_cstr("#<Ruby::Box:");
+    rb_str_concat(r, rb_funcall(LONG2NUM(box->box_id), rb_intern("to_s"), 0));
+    if (BOX_ROOT_P(box)) {
+        rb_str_cat_cstr(r, ",root");
+    }
+    if (BOX_USER_P(box)) {
+        rb_str_cat_cstr(r, ",user");
+    }
+    if (BOX_MAIN_P(box)) {
+        rb_str_cat_cstr(r, ",main");
+    }
+    else if (BOX_OPTIONAL_P(box)) {
+        rb_str_cat_cstr(r, ",optional");
+    }
+    rb_str_cat_cstr(r, ">");
+    return r;
+}
+
+static VALUE
+rb_box_loading_func(int argc, VALUE *argv, VALUE _self)
+{
+    rb_vm_frame_flag_set_box_require(GET_EC());
+    return rb_call_super(argc, argv);
+}
+
+static void
+box_define_loader_method(const char *name)
+{
+    rb_define_private_method(rb_mBoxLoader, name, rb_box_loading_func, -1);
+    rb_define_singleton_method(rb_mBoxLoader, name, rb_box_loading_func, -1);
+}
+
+void
+Init_root_box(void)
+{
+    root_box->loading_table = st_init_strtable();
+}
+
+void
+Init_enable_box(void)
+{
+    const char *env = getenv("RUBY_BOX");
+    if (env && strlen(env) == 1 && env[0] == '1') {
+        ruby_box_enabled = true;
+    }
+    else {
+        ruby_box_init_done = true;
+    }
+}
+
+/* :nodoc: */
+static VALUE
+rb_box_s_root(VALUE recv)
+{
+    return root_box->box_object;
+}
+
+/* :nodoc: */
+static VALUE
+rb_box_s_main(VALUE recv)
+{
+    return main_box->box_object;
+}
+
+/* :nodoc: */
+static VALUE
+rb_box_root_p(VALUE box_value)
+{
+    const rb_box_t *box = (const rb_box_t *)rb_get_box_t(box_value);
+    return RBOOL(BOX_ROOT_P(box));
+}
+
+/* :nodoc: */
+static VALUE
+rb_box_main_p(VALUE box_value)
+{
+    const rb_box_t *box = (const rb_box_t *)rb_get_box_t(box_value);
+    return RBOOL(BOX_MAIN_P(box));
+}
+
+#if RUBY_DEBUG
+
+static const char *
+classname(VALUE klass)
+{
+    VALUE p;
+    if (!klass) {
+        return "Qfalse";
+    }
+    p = RCLASSEXT_CLASSPATH(RCLASS_EXT_PRIME(klass));
+    if (RTEST(p))
+        return RSTRING_PTR(p);
+    if (RB_TYPE_P(klass, T_CLASS) || RB_TYPE_P(klass, T_MODULE) || RB_TYPE_P(klass, T_ICLASS))
+        return "AnyClassValue";
+    return "NonClassValue";
+}
+
+static enum rb_id_table_iterator_result
+dump_classext_methods_i(ID mid, VALUE _val, void *data)
+{
+    VALUE ary = (VALUE)data;
+    rb_ary_push(ary, rb_id2str(mid));
+    return ID_TABLE_CONTINUE;
+}
+
+static enum rb_id_table_iterator_result
+dump_classext_constants_i(ID mid, VALUE _val, void *data)
+{
+    VALUE ary = (VALUE)data;
+    rb_ary_push(ary, rb_id2str(mid));
+    return ID_TABLE_CONTINUE;
+}
+
+static void
+dump_classext_i(rb_classext_t *ext, bool is_prime, VALUE _recv, void *data)
+{
+    char buf[4096];
+    struct rb_id_table *tbl;
+    VALUE ary, res = (VALUE)data;
+
+    snprintf(buf, 4096, "Ruby::Box %ld:%s classext %p\n",
+             RCLASSEXT_BOX(ext)->box_id, is_prime ? " prime" : "", (void *)ext);
+    rb_str_cat_cstr(res, buf);
+
+    snprintf(buf, 2048, "  Super: %s\n", classname(RCLASSEXT_SUPER(ext)));
+    rb_str_cat_cstr(res, buf);
+
+    tbl = RCLASSEXT_M_TBL(ext);
+    if (tbl) {
+        ary = rb_ary_new_capa((long)rb_id_table_size(tbl));
+        rb_id_table_foreach(RCLASSEXT_M_TBL(ext), dump_classext_methods_i, (void *)ary);
+        rb_ary_sort_bang(ary);
+        snprintf(buf, 4096, "  Methods(%ld): ", RARRAY_LEN(ary));
+        rb_str_cat_cstr(res, buf);
+        rb_str_concat(res, rb_ary_join(ary, rb_str_new_cstr(",")));
+        rb_str_cat_cstr(res, "\n");
+    }
+    else {
+        rb_str_cat_cstr(res, "  Methods(0): .\n");
+    }
+
+    tbl = RCLASSEXT_CONST_TBL(ext);
+    if (tbl) {
+        ary = rb_ary_new_capa((long)rb_id_table_size(tbl));
+        rb_id_table_foreach(tbl, dump_classext_constants_i, (void *)ary);
+        rb_ary_sort_bang(ary);
+        snprintf(buf, 4096, "  Constants(%ld): ", RARRAY_LEN(ary));
+        rb_str_cat_cstr(res, buf);
+        rb_str_concat(res, rb_ary_join(ary, rb_str_new_cstr(",")));
+        rb_str_cat_cstr(res, "\n");
+    }
+    else {
+        rb_str_cat_cstr(res, "  Constants(0): .\n");
+    }
+}
+
+/* :nodoc: */
+static VALUE
+rb_f_dump_classext(VALUE recv, VALUE klass)
+{
+    /*
+     * The desired output String value is:
+     * Class: 0x88800932 (String) [singleton]
+     * Prime classext box(2,main), readable(t), writable(f)
+     * Non-prime classexts: 3
+     * Box 2: prime classext 0x88800933
+     *   Super: Object
+     *   Methods(43): aaaaa, bbbb, cccc, dddd, eeeee, ffff, gggg, hhhhh, ...
+     *   Constants(12): FOO, Bar, ...
+     * Box 5: classext 0x88800934
+     *   Super: Object
+     *   Methods(43): aaaaa, bbbb, cccc, dddd, eeeee, ffff, gggg, hhhhh, ...
+     *   Constants(12): FOO, Bar, ...
+     */
+    char buf[2048];
+    VALUE res;
+    const rb_classext_t *ext;
+    const rb_box_t *box;
+    st_table *classext_tbl;
+
+    if (!(RB_TYPE_P(klass, T_CLASS) || RB_TYPE_P(klass, T_MODULE))) {
+        snprintf(buf, 2048, "Non-class/module value: %p (%s)\n", (void *)klass, rb_type_str(BUILTIN_TYPE(klass)));
+        return rb_str_new_cstr(buf);
+    }
+
+    if (RB_TYPE_P(klass, T_CLASS)) {
+        snprintf(buf, 2048, "Class: %p (%s)%s\n",
+                 (void *)klass, classname(klass), RCLASS_SINGLETON_P(klass) ? " [singleton]" : "");
+    }
+    else {
+        snprintf(buf, 2048, "Module: %p (%s)\n", (void *)klass, classname(klass));
+    }
+    res = rb_str_new_cstr(buf);
+
+    ext = RCLASS_EXT_PRIME(klass);
+    box = RCLASSEXT_BOX(ext);
+    snprintf(buf, 2048, "Prime classext box(%ld,%s), readable(%s), writable(%s)\n",
+             box->box_id,
+             BOX_ROOT_P(box) ? "root" : (BOX_MAIN_P(box) ? "main" : "optional"),
+             RCLASS_PRIME_CLASSEXT_READABLE_P(klass) ? "t" : "f",
+             RCLASS_PRIME_CLASSEXT_WRITABLE_P(klass) ? "t" : "f");
+    rb_str_cat_cstr(res, buf);
+
+    classext_tbl = RCLASS_CLASSEXT_TBL(klass);
+    if (!classext_tbl) {
+        rb_str_cat_cstr(res, "Non-prime classexts: 0\n");
+    }
+    else {
+        snprintf(buf, 2048, "Non-prime classexts: %zu\n", st_table_size(classext_tbl));
+        rb_str_cat_cstr(res, buf);
+    }
+
+    rb_class_classext_foreach(klass, dump_classext_i, (void *)res);
+
+    return res;
+}
+
+#endif /* RUBY_DEBUG */
+
+/*
+ *  Document-class: Ruby::Box
+ *
+ *  :markup: markdown
+ *  :include: doc/language/box.md
+ */
+void
+Init_Box(void)
+{
+    tmp_dir = system_tmpdir();
+    tmp_dir_has_dirsep = (strcmp(tmp_dir + (strlen(tmp_dir) - strlen(DIRSEP)), DIRSEP) == 0);
+
+    VALUE mRuby = rb_define_module("Ruby");
+
+    rb_cBox = rb_define_class_under(mRuby, "Box", rb_cModule);
+    rb_define_method(rb_cBox, "initialize", box_initialize, 0);
+
+    /* :nodoc: */
+    rb_cBoxEntry = rb_define_class_under(rb_cBox, "Entry", rb_cObject);
+    rb_define_alloc_func(rb_cBoxEntry, rb_box_entry_alloc);
+
+    initialize_root_box();
+
+    /* :nodoc: */
+    rb_mBoxLoader = rb_define_module_under(rb_cBox, "Loader");
+    box_define_loader_method("require");
+    box_define_loader_method("require_relative");
+    box_define_loader_method("load");
+
+    if (rb_box_available()) {
+        rb_include_module(rb_cObject, rb_mBoxLoader);
+
+        rb_define_singleton_method(rb_cBox, "root", rb_box_s_root, 0);
+        rb_define_singleton_method(rb_cBox, "main", rb_box_s_main, 0);
+        rb_define_method(rb_cBox, "root?", rb_box_root_p, 0);
+        rb_define_method(rb_cBox, "main?", rb_box_main_p, 0);
+
+#if RUBY_DEBUG
+        rb_define_global_function("dump_classext", rb_f_dump_classext, 1);
+#endif
+    }
+
+    rb_define_singleton_method(rb_cBox, "enabled?", rb_box_s_getenabled, 0);
+    rb_define_singleton_method(rb_cBox, "current", rb_box_s_current, 0);
+
+    rb_define_method(rb_cBox, "load_path", rb_box_load_path, 0);
+    rb_define_method(rb_cBox, "load", rb_box_load, -1);
+    rb_define_method(rb_cBox, "require", rb_box_require, 1);
+    rb_define_method(rb_cBox, "require_relative", rb_box_require_relative, 1);
+    rb_define_method(rb_cBox, "eval", rb_box_eval, 1);
+
+    rb_define_method(rb_cBox, "inspect", rb_box_inspect, 0);
+}
diff --git a/builtin.c b/builtin.c
index 21fff95650..6cc9790466 100644
--- a/builtin.c
+++ b/builtin.c
@@ -3,15 +3,15 @@
 #include "iseq.h"
 #include "builtin.h"
 
-#ifdef CROSS_COMPILING
+#include "builtin_binary.rbbin"
 
-#define INCLUDED_BY_BUILTIN_C 1
+#ifndef BUILTIN_BINARY_SIZE
+
+#define BUILTIN_LOADED(feature_name, iseq) ((void)0)
 #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)
 {
@@ -32,31 +32,43 @@ builtin_lookup(const char *feature, size_t *psize)
     return bin;
 }
 
-void
-rb_load_with_builtin_functions(const char *feature_name, const struct rb_builtin_function *table)
+static void
+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);
+        rb_bug("builtin_lookup: can not find %s", 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);
+    ASSUME(iseq); // otherwise an exception should have raised
     vm->builtin_function_table = NULL;
 
     // exec
-    rb_iseq_eval(rb_iseq_check(iseq));
+    rb_iseq_eval(rb_iseq_check(iseq), rb_root_box()); // builtin functions are loaded in the root box
+}
+
+void
+rb_load_with_builtin_functions(const char *feature_name, const struct rb_builtin_function *table)
+{
+    load_with_builtin_functions(feature_name, table);
 }
 
 #endif
 
 void
+rb_free_loaded_builtin_table(void)
+{
+    // do nothing
+}
+
+void
 Init_builtin(void)
 {
     // nothing
@@ -65,5 +77,11 @@ Init_builtin(void)
 void
 Init_builtin_features(void)
 {
-    rb_load_with_builtin_functions("gem_prelude", NULL);
+
+#ifdef BUILTIN_BINARY_SIZE
+
+    load_with_builtin_functions("gem_prelude", NULL);
+
+#endif
+
 }
diff --git a/builtin.h b/builtin.h
index 7ad52f44f4..fd1c4c307f 100644
--- a/builtin.h
+++ b/builtin.h
@@ -11,17 +11,13 @@ struct rb_builtin_function {
     // 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) {\
+#define RB_BUILTIN_FUNCTION(_i, _name, _fname, _arity) {\
   .name = _i < 0 ? NULL : #_name, \
-  .func_ptr = (void *)_fname, \
+  .func_ptr = (void *)(uintptr_t)_fname, \
   .argc = _arity, \
   .index = _i, \
-  .compiler = _compiler, \
 }
 
 void rb_load_with_builtin_functions(const char *feature_name, const struct rb_builtin_function *table);
@@ -110,6 +106,14 @@ rb_vm_lvar(rb_execution_context_t *ec, int index)
 #endif
 }
 
+static inline VALUE
+rb_builtin_basic_definition_p(rb_execution_context_t *ec, VALUE klass, VALUE id_sym)
+{
+    return rb_method_basic_definition_p(klass, rb_sym2id(id_sym)) ? Qtrue : Qfalse;
+}
+
+#define LOCAL_PTR(local) local ## __ptr
+
 // dump/load
 
 struct builtin_binary {
diff --git a/ccan/list/list.h b/ccan/list/list.h
index 30b2af04e9..bf692a6937 100644
--- a/ccan/list/list.h
+++ b/ccan/list/list.h
@@ -635,14 +635,16 @@ static inline void ccan_list_prepend_list_(struct ccan_list_head *to,
 
 /* internal macros, do not use directly */
 #define ccan_list_for_each_off_dir_(h, i, off, dir)				\
-	for (i = ccan_list_node_to_off_(ccan_list_debug(h, CCAN_LIST_LOC)->n.dir,	\
+	for (i = 0, \
+	     i = ccan_list_node_to_off_(ccan_list_debug(h, CCAN_LIST_LOC)->n.dir, \
 				   (off));				\
 	ccan_list_node_from_off_((void *)i, (off)) != &(h)->n;		\
 	i = ccan_list_node_to_off_(ccan_list_node_from_off_((void *)i, (off))->dir, \
 			      (off)))
 
 #define ccan_list_for_each_safe_off_dir_(h, i, nxt, off, dir)		\
-	for (i = ccan_list_node_to_off_(ccan_list_debug(h, CCAN_LIST_LOC)->n.dir,	\
+	for (i = 0, \
+	     i = ccan_list_node_to_off_(ccan_list_debug(h, CCAN_LIST_LOC)->n.dir, \
 				   (off)),				\
 	nxt = ccan_list_node_to_off_(ccan_list_node_from_off_(i, (off))->dir,	\
 				(off));					\
diff --git a/class.c b/class.c
index 85663ada50..9c1bd86dc3 100644
--- a/class.c
+++ b/class.c
@@ -21,6 +21,7 @@
 #include "debug_counter.h"
 #include "id_table.h"
 #include "internal.h"
+#include "internal/box.h"
 #include "internal/class.h"
 #include "internal/eval.h"
 #include "internal/hash.h"
@@ -29,130 +30,700 @@
 #include "internal/variable.h"
 #include "ruby/st.h"
 #include "vm_core.h"
+#include "ruby/ractor.h"
+#include "yjit.h"
+#include "zjit.h"
 
-#define id_attached id__attached__
+/* Flags of T_CLASS
+ *
+ * 0:    RCLASS_IS_ROOT
+ *           The class has been added to the VM roots. Will always be marked and pinned.
+ *           This is done for classes defined from C to allow storing them in global variables.
+ * 1:    RUBY_FL_SINGLETON
+ *           This class is a singleton class.
+ * 2:    RCLASS_PRIME_CLASSEXT_PRIME_WRITABLE
+ *           This class's prime classext is the only classext and writable from any boxes.
+ *           If unset, the prime classext is writable only from the root box.
+ * 3:    RCLASS_IS_INITIALIZED
+ *           Class has been initialized.
+ * 4:    RCLASS_BOXABLE
+ *           Is a builtin class that may be boxed. It larger than a normal class.
+ */
+
+/* Flags of T_ICLASS
+ *
+ * 2:    RCLASS_PRIME_CLASSEXT_PRIME_WRITABLE
+ *           This module's prime classext is the only classext and writable from any boxes.
+ *           If unset, the prime classext is writable only from the root box.
+ * 4:    RCLASS_BOXABLE
+ *           Is a builtin class that may be boxed. It larger than a normal class.
+ */
+
+/* Flags of T_MODULE
+ *
+ * 0:    RCLASS_IS_ROOT
+ *           The class has been added to the VM roots. Will always be marked and pinned.
+ *           This is done for classes defined from C to allow storing them in global variables.
+ * 1:    <reserved>
+ *          Ensures that RUBY_FL_SINGLETON is never set on a T_MODULE. See `rb_class_real`.
+ * 2:    RCLASS_PRIME_CLASSEXT_PRIME_WRITABLE
+ *           This module's prime classext is the only classext and writable from any boxes.
+ *           If unset, the prime classext is writable only from the root box.
+ * 3:    RCLASS_IS_INITIALIZED
+ *           Module has been initialized.
+ * 4:    RCLASS_BOXABLE
+ *           Is a builtin class that may be boxed. It larger than a normal class.
+ * 5:    RMODULE_IS_REFINEMENT
+ *           Module is used for refinements.
+ */
 
 #define METACLASS_OF(k) RBASIC(k)->klass
 #define SET_METACLASS_OF(k, cls) RBASIC_SET_CLASS(k, cls)
 
-RUBY_EXTERN rb_serial_t ruby_vm_global_cvar_state;
+static enum rb_id_table_iterator_result
+cvar_table_free_i(VALUE value, void *ctx)
+{
+    xfree((void *)value);
+    return ID_TABLE_CONTINUE;
+}
 
-static rb_subclass_entry_t *
-push_subclass_entry_to_list(VALUE super, VALUE klass)
+rb_classext_t *
+rb_class_unlink_classext(VALUE klass, const rb_box_t *box)
 {
-    rb_subclass_entry_t *entry, *head;
+    st_data_t ext;
+    st_data_t key = (st_data_t)box->box_object;
+    VALUE obj_id = rb_obj_id(klass);
+    st_delete(box->classext_cow_classes, &obj_id, 0);
+    st_delete(RCLASS_CLASSEXT_TBL(klass), &key, &ext);
+    return (rb_classext_t *)ext;
+}
 
-    entry = ZALLOC(rb_subclass_entry_t);
-    entry->klass = klass;
+void
+rb_class_classext_free(VALUE klass, rb_classext_t *ext, bool is_prime)
+{
+    struct rb_id_table *tbl;
 
-    head = RCLASS_SUBCLASSES(super);
-    if (!head) {
-        head = ZALLOC(rb_subclass_entry_t);
-        RCLASS_SUBCLASSES(super) = head;
+    rb_id_table_free(RCLASSEXT_M_TBL(ext));
+
+    if (!RCLASSEXT_SHARED_CONST_TBL(ext) && (tbl = RCLASSEXT_CONST_TBL(ext)) != NULL) {
+        rb_free_const_table(tbl);
     }
-    entry->next = head->next;
-    entry->prev = head;
 
-    if (head->next) {
-        head->next->prev = entry;
+    if ((tbl = RCLASSEXT_CVC_TBL(ext)) != NULL) {
+        rb_id_table_foreach_values(tbl, cvar_table_free_i, NULL);
+        rb_id_table_free(tbl);
+    }
+
+    rb_class_classext_free_subclasses(ext, klass, false);
+
+    if (RCLASSEXT_SUPERCLASSES_WITH_SELF(ext)) {
+        RUBY_ASSERT(is_prime); // superclasses should only be used on prime
+        xfree(RCLASSEXT_SUPERCLASSES(ext));
     }
-    head->next = entry;
 
-    return entry;
+    if (!is_prime) { // the prime classext will be freed with RClass
+        xfree(ext);
+    }
 }
 
 void
-rb_class_subclass_add(VALUE super, VALUE klass)
+rb_iclass_classext_free(VALUE klass, rb_classext_t *ext, bool is_prime)
 {
-    if (super && super != Qundef) {
-        rb_subclass_entry_t *entry = push_subclass_entry_to_list(super, klass);
-        RCLASS_SUBCLASS_ENTRY(klass) = entry;
+    if (RCLASSEXT_ICLASS_IS_ORIGIN(ext) && !RCLASSEXT_ICLASS_ORIGIN_SHARED_MTBL(ext)) {
+        /* Method table is not shared for origin iclasses of classes */
+        rb_id_table_free(RCLASSEXT_M_TBL(ext));
+    }
+
+    if (RCLASSEXT_CALLABLE_M_TBL(ext) != NULL) {
+        rb_id_table_free(RCLASSEXT_CALLABLE_M_TBL(ext));
+    }
+
+    rb_class_classext_free_subclasses(ext, klass, false);
+
+    if (!is_prime) { // the prime classext will be freed with RClass
+        xfree(ext);
     }
 }
 
 static void
-rb_module_add_to_subclasses_list(VALUE module, VALUE iclass)
+iclass_free_orphan_classext(VALUE klass, rb_classext_t *ext)
 {
-    rb_subclass_entry_t *entry = push_subclass_entry_to_list(module, iclass);
-    RCLASS_MODULE_SUBCLASS_ENTRY(iclass) = entry;
+    if (RCLASSEXT_ICLASS_IS_ORIGIN(ext) && !RCLASSEXT_ICLASS_ORIGIN_SHARED_MTBL(ext)) {
+        /* Method table is not shared for origin iclasses of classes */
+        rb_id_table_free(RCLASSEXT_M_TBL(ext));
+    }
+
+    if (RCLASSEXT_CALLABLE_M_TBL(ext) != NULL) {
+        rb_id_table_free(RCLASSEXT_CALLABLE_M_TBL(ext));
+    }
+
+    rb_class_classext_free_subclasses(ext, klass, true); // replacing this classext with a newer one
+
+    xfree(ext);
 }
 
-void
-rb_class_remove_subclass_head(VALUE klass)
+struct rb_class_set_box_classext_args {
+    VALUE obj;
+    rb_classext_t *ext;
+};
+
+static int
+set_box_classext_update(st_data_t *key_ptr, st_data_t *val_ptr, st_data_t a, int existing)
 {
-    rb_subclass_entry_t *head = RCLASS_SUBCLASSES(klass);
+    struct rb_class_set_box_classext_args *args = (struct rb_class_set_box_classext_args *)a;
 
-    if (head) {
-        if (head->next) {
-            head->next->prev = NULL;
+    if (existing) {
+        if (LIKELY(BUILTIN_TYPE(args->obj) == T_ICLASS)) {
+            iclass_free_orphan_classext(args->obj, (rb_classext_t *)*val_ptr);
+        }
+        else {
+            rb_bug("Updating existing classext for non-iclass never happen");
         }
-        RCLASS_SUBCLASSES(klass) = NULL;
-        xfree(head);
     }
+
+    *val_ptr = (st_data_t)args->ext;
+
+    return ST_CONTINUE;
 }
 
 void
-rb_class_remove_from_super_subclasses(VALUE klass)
+rb_class_set_box_classext(VALUE obj, const rb_box_t *box, rb_classext_t *ext)
 {
-    rb_subclass_entry_t *entry = RCLASS_SUBCLASS_ENTRY(klass);
+    struct rb_class_set_box_classext_args args = {
+        .obj = obj,
+        .ext = ext,
+    };
+
+    VM_ASSERT(BOX_USER_P(box));
 
-    if (entry) {
-        rb_subclass_entry_t *prev = entry->prev, *next = entry->next;
+    st_update(RCLASS_CLASSEXT_TBL(obj), (st_data_t)box->box_object, set_box_classext_update, (st_data_t)&args);
+    st_insert(box->classext_cow_classes, (st_data_t)rb_obj_id(obj), obj);
+
+    // FIXME: This is done here because this is the first time the objects in
+    // the classext are exposed via this class. It's likely that if GC
+    // compaction occurred between the VALUEs being copied in and this
+    // writebarrier trigger the values will be stale.
+    rb_gc_writebarrier_remember(obj);
+}
+
+RUBY_EXTERN rb_serial_t ruby_vm_global_cvar_state;
+
+struct duplicate_id_tbl_data {
+    struct rb_id_table *tbl;
+    VALUE klass;
+};
+
+static enum rb_id_table_iterator_result
+duplicate_classext_id_table_i(ID key, VALUE value, void *data)
+{
+    struct rb_id_table *tbl = (struct rb_id_table *)data;
+    rb_id_table_insert(tbl, key, value);
+    return ID_TABLE_CONTINUE;
+}
+
+static enum rb_id_table_iterator_result
+duplicate_classext_m_tbl_i(ID key, VALUE value, void *data)
+{
+    struct duplicate_id_tbl_data *arg = (struct duplicate_id_tbl_data *)data;
+    rb_method_entry_t *me = (rb_method_entry_t *)value;
+    rb_method_table_insert0(arg->klass, arg->tbl, key, me, false);
+    return ID_TABLE_CONTINUE;
+}
+
+static struct rb_id_table *
+duplicate_classext_m_tbl(struct rb_id_table *orig, VALUE klass, bool init_missing)
+{
+    struct rb_id_table *tbl;
+    if (!orig) {
+        if (init_missing)
+            return rb_id_table_create(0);
+        else
+            return NULL;
+    }
+    tbl = rb_id_table_create(rb_id_table_size(orig));
+    struct duplicate_id_tbl_data data = {
+        .tbl = tbl,
+        .klass = klass,
+    };
+    rb_id_table_foreach(orig, duplicate_classext_m_tbl_i, &data);
+    return tbl;
+}
+
+static struct rb_id_table *
+duplicate_classext_id_table(struct rb_id_table *orig, bool init_missing)
+{
+    struct rb_id_table *tbl;
+
+    if (!orig) {
+        if (init_missing)
+            return rb_id_table_create(0);
+        else
+            return NULL;
+    }
+    tbl = rb_id_table_create(rb_id_table_size(orig));
+    rb_id_table_foreach(orig, duplicate_classext_id_table_i, tbl);
+    return tbl;
+}
+
+static rb_const_entry_t *
+duplicate_classext_const_entry(rb_const_entry_t *src, VALUE klass)
+{
+    // See also: setup_const_entry (variable.c)
+    rb_const_entry_t *dst = ZALLOC(rb_const_entry_t);
+
+    dst->flag = src->flag;
+    dst->line = src->line;
+    RB_OBJ_WRITE(klass, &dst->value, src->value);
+    RB_OBJ_WRITE(klass, &dst->file, src->file);
+
+    return dst;
+}
+
+static enum rb_id_table_iterator_result
+duplicate_classext_const_tbl_i(ID key, VALUE value, void *data)
+{
+    struct duplicate_id_tbl_data *arg = (struct duplicate_id_tbl_data *)data;
+    rb_const_entry_t *entry = duplicate_classext_const_entry((rb_const_entry_t *)value, arg->klass);
+
+    rb_id_table_insert(arg->tbl, key, (VALUE)entry);
+
+    return ID_TABLE_CONTINUE;
+}
+
+static struct rb_id_table *
+duplicate_classext_const_tbl(struct rb_id_table *src, VALUE klass)
+{
+    struct rb_id_table *dst;
+
+    if (!src)
+        return NULL;
+
+    dst = rb_id_table_create(rb_id_table_size(src));
+
+    struct duplicate_id_tbl_data data = {
+        .tbl = dst,
+        .klass = klass,
+    };
+    rb_id_table_foreach(src, duplicate_classext_const_tbl_i, (void *)&data);
+
+    return dst;
+}
 
-        if (prev) {
-            prev->next = next;
+static VALUE
+box_subclasses_tbl_key(const rb_box_t *box)
+{
+    if (!box){
+        return 0;
+    }
+    return (VALUE)box->box_id;
+}
+
+static void
+duplicate_classext_subclasses(rb_classext_t *orig, rb_classext_t *copy)
+{
+    rb_subclass_anchor_t *anchor, *orig_anchor;
+    rb_subclass_entry_t *head, *cur, *cdr, *entry, *first = NULL;
+    rb_box_subclasses_t *box_subclasses;
+    struct st_table *tbl;
+
+    if (RCLASSEXT_SUBCLASSES(orig)) {
+        orig_anchor = RCLASSEXT_SUBCLASSES(orig);
+        box_subclasses = orig_anchor->box_subclasses;
+        tbl = ((rb_box_subclasses_t *)box_subclasses)->tbl;
+
+        anchor = ZALLOC(rb_subclass_anchor_t);
+        anchor->box_subclasses = rb_box_subclasses_ref_inc(box_subclasses);
+
+        head = ZALLOC(rb_subclass_entry_t);
+        anchor->head = head;
+
+        RCLASSEXT_SUBCLASSES(copy) = anchor;
+
+        cur = head;
+        entry = orig_anchor->head;
+        RUBY_ASSERT(!entry->klass);
+        // The head entry has NULL klass always. See rb_class_foreach_subclass().
+        entry = entry->next;
+        while (entry) {
+            if (rb_objspace_garbage_object_p(entry->klass)) {
+                entry = entry->next;
+                continue;
+            }
+            cdr = ZALLOC(rb_subclass_entry_t);
+            cdr->klass = entry->klass;
+            cdr->prev = cur;
+            cur->next = cdr;
+            if (!first) {
+                VALUE box_id = box_subclasses_tbl_key(RCLASSEXT_BOX(copy));
+                first = cdr;
+                st_insert(tbl, box_id, (st_data_t)first);
+            }
+            cur = cdr;
+            entry = entry->next;
         }
-        if (next) {
-            next->prev = prev;
+    }
+
+    if (RCLASSEXT_BOX_SUPER_SUBCLASSES(orig))
+        RCLASSEXT_BOX_SUPER_SUBCLASSES(copy) = rb_box_subclasses_ref_inc(RCLASSEXT_BOX_SUPER_SUBCLASSES(orig));
+    if (RCLASSEXT_BOX_MODULE_SUBCLASSES(orig))
+        RCLASSEXT_BOX_MODULE_SUBCLASSES(copy) = rb_box_subclasses_ref_inc(RCLASSEXT_BOX_MODULE_SUBCLASSES(orig));
+}
+
+static void
+class_duplicate_iclass_classext(VALUE iclass, rb_classext_t *mod_ext, const rb_box_t *box)
+{
+    RUBY_ASSERT(RB_TYPE_P(iclass, T_ICLASS));
+
+    rb_classext_t *src = RCLASS_EXT_PRIME(iclass);
+    rb_classext_t *ext = RCLASS_EXT_TABLE_LOOKUP_INTERNAL(iclass, box);
+    int first_set = 0;
+
+    if (ext) {
+        // iclass classext for the ns is only for cc/callable_m_tbl if it's created earlier than module's one
+        rb_invalidate_method_caches(RCLASSEXT_CALLABLE_M_TBL(ext), RCLASSEXT_CC_TBL(ext));
+    }
+
+    ext = ZALLOC(rb_classext_t);
+
+    RCLASSEXT_BOX(ext) = box;
+
+    RCLASSEXT_SUPER(ext) = RCLASSEXT_SUPER(src);
+
+    // See also: rb_include_class_new()
+    if (RCLASSEXT_ICLASS_IS_ORIGIN(src) && !RCLASSEXT_ICLASS_ORIGIN_SHARED_MTBL(src)) {
+        RCLASSEXT_M_TBL(ext) = duplicate_classext_m_tbl(RCLASSEXT_M_TBL(src), iclass, true);
+    }
+    else {
+        RCLASSEXT_M_TBL(ext) = RCLASSEXT_M_TBL(mod_ext);
+    }
+
+    RCLASSEXT_CONST_TBL(ext) = RCLASSEXT_CONST_TBL(mod_ext);
+    RCLASSEXT_CVC_TBL(ext) = RCLASSEXT_CVC_TBL(mod_ext);
+
+    // Those are cache and should be recreated when methods are called
+    // RCLASSEXT_CALLABLE_M_TBL(ext) = NULL;
+    // RCLASSEXT_CC_TBL(ext) = NULL;
+
+    // subclasses, box_super_subclasses_tbl, box_module_subclasses_tbl
+    duplicate_classext_subclasses(src, ext);
+
+    RCLASSEXT_SET_ORIGIN(ext, iclass, RCLASSEXT_ORIGIN(src));
+    RCLASSEXT_ICLASS_IS_ORIGIN(ext) = RCLASSEXT_ICLASS_IS_ORIGIN(src);
+    RCLASSEXT_ICLASS_ORIGIN_SHARED_MTBL(ext) = RCLASSEXT_ICLASS_ORIGIN_SHARED_MTBL(src);
+
+    RCLASSEXT_SET_INCLUDER(ext, iclass, RCLASSEXT_INCLUDER(src));
+
+    VM_ASSERT(FL_TEST_RAW(iclass, RCLASS_BOXABLE));
+
+    first_set = RCLASS_SET_BOX_CLASSEXT(iclass, box, ext);
+    if (first_set) {
+        RCLASS_SET_PRIME_CLASSEXT_WRITABLE(iclass, false);
+    }
+}
+
+rb_classext_t *
+rb_class_duplicate_classext(rb_classext_t *orig, VALUE klass, const rb_box_t *box)
+{
+    VM_ASSERT(RB_TYPE_P(klass, T_CLASS) || RB_TYPE_P(klass, T_MODULE) || RB_TYPE_P(klass, T_ICLASS));
+
+    rb_classext_t *ext = ZALLOC(rb_classext_t);
+    bool dup_iclass = RB_TYPE_P(klass, T_MODULE) ? true : false;
+
+    RCLASSEXT_BOX(ext) = box;
+
+    RCLASSEXT_SUPER(ext) = RCLASSEXT_SUPER(orig);
+
+    RCLASSEXT_M_TBL(ext) = duplicate_classext_m_tbl(RCLASSEXT_M_TBL(orig), klass, dup_iclass);
+    RCLASSEXT_ICLASS_IS_ORIGIN(ext) = true;
+    RCLASSEXT_ICLASS_ORIGIN_SHARED_MTBL(ext) = false;
+
+    if (orig->fields_obj) {
+        RB_OBJ_WRITE(klass, &ext->fields_obj, rb_imemo_fields_clone(orig->fields_obj));
+    }
+
+    if (RCLASSEXT_SHARED_CONST_TBL(orig)) {
+        RCLASSEXT_CONST_TBL(ext) = RCLASSEXT_CONST_TBL(orig);
+        RCLASSEXT_SHARED_CONST_TBL(ext) = true;
+    }
+    else {
+        RCLASSEXT_CONST_TBL(ext) = duplicate_classext_const_tbl(RCLASSEXT_CONST_TBL(orig), klass);
+        RCLASSEXT_SHARED_CONST_TBL(ext) = false;
+    }
+    /*
+     * callable_m_tbl is for `super` chain, and entries will be created when the super chain is called.
+     * so initially, it can be NULL and let it be created lazily.
+     * RCLASSEXT_CALLABLE_M_TBL(ext) = NULL;
+     *
+     * cc_tbl is for method inline cache, and method calls from different boxes never occur on
+     * the same code, so the copied classext should have a different cc_tbl from the prime one.
+     * RCLASSEXT_CC_TBL(copy) = NULL
+     */
+
+    RCLASSEXT_CVC_TBL(ext) = duplicate_classext_id_table(RCLASSEXT_CVC_TBL(orig), dup_iclass);
+
+    // subclasses, subclasses_index
+    duplicate_classext_subclasses(orig, ext);
+
+    RCLASSEXT_SET_ORIGIN(ext, klass, RCLASSEXT_ORIGIN(orig));
+    /*
+     * Members not copied to box's classext values
+     * * refined_class
+     * * as.class.allocator / as.singleton_class.attached_object
+     * * includer
+     * * max IV count
+     * * variation count
+     */
+    RCLASSEXT_PERMANENT_CLASSPATH(ext) = RCLASSEXT_PERMANENT_CLASSPATH(orig);
+    RCLASSEXT_CLONED(ext) = RCLASSEXT_CLONED(orig);
+    RCLASSEXT_CLASSPATH(ext) = RCLASSEXT_CLASSPATH(orig);
+
+    /* For the usual T_CLASS/T_MODULE, iclass flags are always false */
+
+    if (dup_iclass) {
+        VALUE iclass;
+        /*
+         * ICLASS has the same m_tbl/const_tbl/cvc_tbl with the included module.
+         * So the module's classext is copied, its tables should be also referred
+         * by the ICLASS's classext for the box.
+         */
+        rb_subclass_anchor_t *anchor = RCLASSEXT_SUBCLASSES(ext);
+        rb_subclass_entry_t *subclass_entry = anchor->head;
+        while (subclass_entry) {
+            if (subclass_entry->klass && RB_TYPE_P(subclass_entry->klass, T_ICLASS)) {
+                iclass = subclass_entry->klass;
+                VM_ASSERT(RB_TYPE_P(iclass, T_ICLASS));
+                if (RBASIC_CLASS(iclass) == klass) {
+                    // Is the subclass an ICLASS including this module into another class
+                    // If so we need to re-associate it under our box with the new ext
+                    VM_ASSERT(FL_TEST_RAW(iclass, RCLASS_BOXABLE));
+                    class_duplicate_iclass_classext(iclass, ext, box);
+                }
+            }
+            subclass_entry = subclass_entry->next;
         }
+    }
 
-        xfree(entry);
+    return ext;
+}
+
+void
+rb_class_ensure_writable(VALUE klass)
+{
+    VM_ASSERT(RB_TYPE_P(klass, T_CLASS) || RB_TYPE_P(klass, T_MODULE) || RB_TYPE_P(klass, T_ICLASS));
+    RCLASS_EXT_WRITABLE(klass);
+}
+
+struct class_classext_foreach_arg {
+    rb_class_classext_foreach_callback_func *func;
+    void * callback_arg;
+};
+
+static int
+class_classext_foreach_i(st_data_t key, st_data_t value, st_data_t arg)
+{
+    struct class_classext_foreach_arg *foreach_arg = (struct class_classext_foreach_arg *)arg;
+    rb_class_classext_foreach_callback_func *func = foreach_arg->func;
+    func((rb_classext_t *)value, false, (VALUE)key, foreach_arg->callback_arg);
+    return ST_CONTINUE;
+}
+
+void
+rb_class_classext_foreach(VALUE klass, rb_class_classext_foreach_callback_func *func, void *arg)
+{
+    st_table *tbl = RCLASS_CLASSEXT_TBL(klass);
+    struct class_classext_foreach_arg foreach_arg;
+    if (tbl) {
+        foreach_arg.func = func;
+        foreach_arg.callback_arg = arg;
+        rb_st_foreach(tbl, class_classext_foreach_i, (st_data_t)&foreach_arg);
     }
+    func(RCLASS_EXT_PRIME(klass), true, (VALUE)NULL, arg);
+}
 
-    RCLASS_SUBCLASS_ENTRY(klass) = NULL;
+VALUE
+rb_class_super_of(VALUE klass)
+{
+    return RCLASS_SUPER(klass);
+}
+
+VALUE
+rb_class_singleton_p(VALUE klass)
+{
+    return RCLASS_SINGLETON_P(klass);
+}
+
+unsigned char
+rb_class_variation_count(VALUE klass)
+{
+    return RCLASS_VARIATION_COUNT(klass);
+}
+
+static void
+push_subclass_entry_to_list(VALUE super, VALUE klass, bool is_module)
+{
+    rb_subclass_entry_t *entry, *head;
+    rb_subclass_anchor_t *anchor;
+    rb_box_subclasses_t *box_subclasses;
+    struct st_table *tbl;
+    const rb_box_t *box = rb_current_box();
+
+    entry = ZALLOC(rb_subclass_entry_t);
+    entry->klass = klass;
+
+    RB_VM_LOCKING() {
+        anchor = RCLASS_WRITABLE_SUBCLASSES(super);
+        VM_ASSERT(anchor);
+        box_subclasses = (rb_box_subclasses_t *)anchor->box_subclasses;
+        VM_ASSERT(box_subclasses);
+        tbl = box_subclasses->tbl;
+        VM_ASSERT(tbl);
+
+        head = anchor->head;
+        if (head->next) {
+            head->next->prev = entry;
+            entry->next = head->next;
+        }
+        head->next = entry;
+        entry->prev = head;
+        st_insert(tbl, box_subclasses_tbl_key(box), (st_data_t)entry);
+    }
+
+    if (is_module) {
+        RCLASS_WRITE_BOX_MODULE_SUBCLASSES(klass, anchor->box_subclasses);
+    }
+    else {
+        RCLASS_WRITE_BOX_SUPER_SUBCLASSES(klass, anchor->box_subclasses);
+    }
 }
 
 void
-rb_class_remove_from_module_subclasses(VALUE klass)
+rb_class_subclass_add(VALUE super, VALUE klass)
+{
+    if (super && !UNDEF_P(super)) {
+        push_subclass_entry_to_list(super, klass, false);
+    }
+}
+
+static void
+rb_module_add_to_subclasses_list(VALUE module, VALUE iclass)
+{
+    if (module && !UNDEF_P(module)) {
+        push_subclass_entry_to_list(module, iclass, true);
+    }
+}
+
+static struct rb_subclass_entry *
+class_get_subclasses_for_ns(struct st_table *tbl, VALUE box_id)
 {
-    rb_subclass_entry_t *entry = RCLASS_MODULE_SUBCLASS_ENTRY(klass);
+    st_data_t value;
+    if (st_lookup(tbl, (st_data_t)box_id, &value)) {
+        return (struct rb_subclass_entry *)value;
+    }
+    return NULL;
+}
+
+static int
+remove_class_from_subclasses_replace_first_entry(st_data_t *key, st_data_t *value, st_data_t arg, int existing)
+{
+    *value = arg;
+    return ST_CONTINUE;
+}
+
+static void
+remove_class_from_subclasses(struct st_table *tbl, VALUE box_id, VALUE klass)
+{
+    rb_subclass_entry_t *entry = class_get_subclasses_for_ns(tbl, box_id);
+    bool first_entry = true;
+    while (entry) {
+        if (entry->klass == klass) {
+            rb_subclass_entry_t *prev = entry->prev, *next = entry->next;
+
+            if (prev) {
+                prev->next = next;
+            }
+            if (next) {
+                next->prev = prev;
+            }
 
-    if (entry) {
-        rb_subclass_entry_t *prev = entry->prev, *next = entry->next;
+            if (first_entry) {
+                if (next) {
+                    st_update(tbl, box_id, remove_class_from_subclasses_replace_first_entry, (st_data_t)next);
+                }
+                else {
+                    // no subclass entries in this ns after the deletion
+                    st_delete(tbl, &box_id, NULL);
+                }
+            }
 
-        if (prev) {
-            prev->next = next;
+            xfree(entry);
+
+            break;
         }
-        if (next) {
-            next->prev = prev;
+        else if (first_entry) {
+            first_entry = false;
         }
+        entry = entry->next;
+    }
+}
+
+void
+rb_class_remove_from_super_subclasses(VALUE klass)
+{
+    rb_classext_t *ext = RCLASS_EXT_WRITABLE(klass);
+    rb_box_subclasses_t *box_subclasses = RCLASSEXT_BOX_SUPER_SUBCLASSES(ext);
+
+    if (!box_subclasses) return;
+    remove_class_from_subclasses(box_subclasses->tbl, box_subclasses_tbl_key(RCLASSEXT_BOX(ext)), klass);
+    rb_box_subclasses_ref_dec(box_subclasses);
+    RCLASSEXT_BOX_SUPER_SUBCLASSES(ext) = 0;
+}
 
+void
+rb_class_classext_free_subclasses(rb_classext_t *ext, VALUE klass, bool replacing)
+{
+    rb_subclass_anchor_t *anchor = RCLASSEXT_SUBCLASSES(ext);
+    struct st_table *tbl = anchor->box_subclasses->tbl;
+    VALUE box_id = box_subclasses_tbl_key(RCLASSEXT_BOX(ext));
+    rb_subclass_entry_t *next, *entry = anchor->head;
+
+    while (entry) {
+        next = entry->next;
         xfree(entry);
+        entry = next;
     }
+    VM_ASSERT(
+        rb_box_subclasses_ref_count(anchor->box_subclasses) > 0,
+        "box_subclasses refcount (%p) %ld", anchor->box_subclasses, rb_box_subclasses_ref_count(anchor->box_subclasses));
+    st_delete(tbl, &box_id, NULL);
+    rb_box_subclasses_ref_dec(anchor->box_subclasses);
+    xfree(anchor);
 
-    RCLASS_MODULE_SUBCLASS_ENTRY(klass) = NULL;
+    if (RCLASSEXT_BOX_SUPER_SUBCLASSES(ext)) {
+        rb_box_subclasses_t *box_sub = RCLASSEXT_BOX_SUPER_SUBCLASSES(ext);
+        if (!replacing) remove_class_from_subclasses(box_sub->tbl, box_id, klass);
+        rb_box_subclasses_ref_dec(box_sub);
+    }
+    if (RCLASSEXT_BOX_MODULE_SUBCLASSES(ext)) {
+        rb_box_subclasses_t *box_sub = RCLASSEXT_BOX_MODULE_SUBCLASSES(ext);
+        if (!replacing) remove_class_from_subclasses(box_sub->tbl, box_id, klass);
+        rb_box_subclasses_ref_dec(box_sub);
+    }
 }
 
 void
 rb_class_foreach_subclass(VALUE klass, void (*f)(VALUE, VALUE), VALUE arg)
 {
-    // RCLASS_SUBCLASSES should always point to our head element which has NULL klass
-    rb_subclass_entry_t *cur = RCLASS_SUBCLASSES(klass);
-    // if we have a subclasses list, then the head is a placeholder with no valid
-    // class. So ignore it and use the next element in the list (if one exists)
-    if (cur) {
-        RUBY_ASSERT(!cur->klass);
-        cur = cur->next;
-    }
-
+    rb_subclass_entry_t *tmp;
+    rb_subclass_entry_t *cur = RCLASS_SUBCLASSES_FIRST(klass);
     /* 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;
+        tmp = cur->next;
         // do not trigger GC during f, otherwise the cur will become
         // a dangling pointer if the subclass is collected
         f(curklass, arg);
+        cur = tmp;
     }
 }
 
@@ -162,102 +733,168 @@ 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)
+class_switch_superclass(VALUE super, VALUE klass)
 {
-    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);
+    RB_VM_LOCKING() {
+        class_detach_subclasses(klass, Qnil);
+        rb_class_subclass_add(super, klass);
+    }
 }
 
 /**
- * Allocates a struct RClass for a new class.
+ * Allocates a struct RClass for a new class, iclass, or module.
  *
- * \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.
+ * @param type      The type of the RClass (T_CLASS, T_ICLASS, or T_MODULE)
+ * @param klass     value for basic.klass of the returned object.
+ * @return          an uninitialized Class/IClass/Module object.
+ * @pre  `klass` must refer to a class or module
  *
- * \note this function is not Class#allocate.
+ * @note this function is not Class#allocate.
  */
 static VALUE
-class_alloc(VALUE flags, VALUE klass)
+class_alloc0(enum ruby_value_type type, VALUE klass, bool boxable)
 {
-    size_t alloc_size = sizeof(struct RClass);
+    rb_box_subclasses_t *box_subclasses;
+    rb_subclass_anchor_t *anchor;
+    const rb_box_t *box = rb_current_box();
 
-#if RCLASS_EXT_EMBEDDED
-    alloc_size += sizeof(rb_classext_t);
-#endif
+    if (!ruby_box_init_done) {
+        boxable = true;
+    }
 
-    flags &= T_MASK;
-    flags |= FL_PROMOTED1 /* start from age == 2 */;
+    size_t alloc_size = sizeof(struct RClass_and_rb_classext_t);
+    if (boxable) {
+        alloc_size = sizeof(struct RClass_boxable);
+    }
+
+    // class_alloc is supposed to return a new object that is not promoted yet.
+    // So, we need to avoid GC after NEWOBJ_OF.
+    // To achieve that, we allocate subclass lists before NEWOBJ_OF.
+    //
+    // TODO: Note that this could cause memory leak.
+    // If NEWOBJ_OF fails with out of memory, these buffers will leak.
+    box_subclasses = ZALLOC(rb_box_subclasses_t);
+    box_subclasses->refcount = 1;
+    box_subclasses->tbl = st_init_numtable();
+    anchor = ZALLOC(rb_subclass_anchor_t);
+    anchor->box_subclasses = box_subclasses;
+    anchor->head = ZALLOC(rb_subclass_entry_t);
+
+    RUBY_ASSERT(type == T_CLASS || type == T_ICLASS || type == T_MODULE);
+
+    VALUE flags = type | FL_SHAREABLE;
     if (RGENGC_WB_PROTECTED_CLASS) flags |= FL_WB_PROTECTED;
-    RVARGC_NEWOBJ_OF(obj, struct RClass, klass, flags, alloc_size);
+    if (boxable) flags |= RCLASS_BOXABLE;
 
-#if RCLASS_EXT_EMBEDDED
-    memset(RCLASS_EXT(obj), 0, sizeof(rb_classext_t));
-#else
-    obj->ptr = ZALLOC(rb_classext_t);
-#endif
+    NEWOBJ_OF(obj, struct RClass, klass, flags, alloc_size, 0);
+
+    obj->object_id = 0;
+
+    memset(RCLASS_EXT_PRIME(obj), 0, sizeof(rb_classext_t));
 
     /* ZALLOC
       RCLASS_CONST_TBL(obj) = 0;
       RCLASS_M_TBL(obj) = 0;
-      RCLASS_IV_INDEX_TBL(obj) = 0;
+      RCLASS_FIELDS(obj) = 0;
       RCLASS_SET_SUPER((VALUE)obj, 0);
-      RCLASS_SUBCLASSES(obj) = NULL;
-      RCLASS_PARENT_SUBCLASSES(obj) = NULL;
-      RCLASS_MODULE_SUBCLASSES(obj) = NULL;
      */
+
+    if (boxable) {
+        ((struct RClass_boxable *)obj)->box_classext_tbl = NULL;
+    }
+
+    RCLASS_PRIME_BOX((VALUE)obj) = box;
+    // Classes/Modules defined in user boxes are
+    // writable directly because it exists only in a box.
+    RCLASS_SET_PRIME_CLASSEXT_WRITABLE((VALUE)obj, !boxable || BOX_USER_P(box));
+
     RCLASS_SET_ORIGIN((VALUE)obj, (VALUE)obj);
-    RB_OBJ_WRITE(obj, &RCLASS_REFINED_CLASS(obj), Qnil);
-    RCLASS_ALLOCATOR(obj) = 0;
+    RCLASS_SET_REFINED_CLASS((VALUE)obj, Qnil);
+
+    RCLASS_SET_SUBCLASSES((VALUE)obj, anchor);
 
     return (VALUE)obj;
 }
 
+static VALUE
+class_alloc(enum ruby_value_type type, VALUE klass)
+{
+    bool boxable = rb_box_available() && BOX_ROOT_P(rb_current_box());
+    return class_alloc0(type, klass, boxable);
+}
+
+static VALUE
+class_associate_super(VALUE klass, VALUE super, bool init)
+{
+    if (super && !UNDEF_P(super)) {
+        class_switch_superclass(super, klass);
+    }
+    if (init) {
+        RCLASS_SET_SUPER(klass, super);
+    }
+    else {
+        RCLASS_WRITE_SUPER(klass, super);
+    }
+    rb_class_update_superclasses(klass);
+    return super;
+}
+
+VALUE
+rb_class_set_super(VALUE klass, VALUE super)
+{
+    return class_associate_super(klass, super, false);
+}
+
 static void
-RCLASS_M_TBL_INIT(VALUE c)
+class_initialize_method_table(VALUE c)
 {
-    RCLASS_M_TBL(c) = rb_id_table_create(0);
+    // initialize the prime classext m_tbl
+    RCLASS_SET_M_TBL(c, rb_id_table_create(0));
 }
 
-/*!
+static void
+class_clear_method_table(VALUE c)
+{
+    RCLASS_WRITE_M_TBL(c, rb_id_table_create(0));
+}
+
+static VALUE
+class_boot_boxable(VALUE super, bool boxable)
+{
+    VALUE klass = class_alloc0(T_CLASS, rb_cClass, boxable);
+
+    // initialize method table prior to class_associate_super()
+    // because class_associate_super() may cause GC and promote klass
+    class_initialize_method_table(klass);
+
+    class_associate_super(klass, super, true);
+    if (super && !UNDEF_P(super)) {
+        rb_class_set_initialized(klass);
+    }
+
+    return (VALUE)klass;
+}
+
+/**
  * 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.
+ * @param super     a class from which the new class derives.
+ * @return          a class object.
+ * @pre  `super` must be a class.
+ * @post the metaclass of the new class is Class.
  */
 VALUE
 rb_class_boot(VALUE super)
 {
-    VALUE klass = class_alloc(T_CLASS, rb_cClass);
-
-    RCLASS_SET_SUPER(klass, super);
-    RCLASS_M_TBL_INIT(klass);
-
-    return (VALUE)klass;
+    return class_boot_boxable(super, false);
 }
 
 static VALUE *
 class_superclasses_including_self(VALUE klass)
 {
-    if (FL_TEST_RAW(klass, RCLASS_SUPERCLASSES_INCLUDE_SELF))
+    if (RCLASS_SUPERCLASSES_WITH_SELF_P(klass))
         return RCLASS_SUPERCLASSES(klass);
 
     size_t depth = RCLASS_SUPERCLASS_DEPTH(klass);
@@ -266,18 +903,18 @@ class_superclasses_including_self(VALUE klass)
         memcpy(superclasses, RCLASS_SUPERCLASSES(klass), sizeof(VALUE) * depth);
     superclasses[depth] = klass;
 
-    RCLASS_SUPERCLASSES(klass) = superclasses;
-    FL_SET_RAW(klass, RCLASS_SUPERCLASSES_INCLUDE_SELF);
     return superclasses;
 }
 
 void
 rb_class_update_superclasses(VALUE klass)
 {
+    VALUE *superclasses;
+    size_t super_depth;
     VALUE super = RCLASS_SUPER(klass);
 
     if (!RB_TYPE_P(klass, T_CLASS)) return;
-    if (super == Qundef) return;
+    if (UNDEF_P(super)) return;
 
     // If the superclass array is already built
     if (RCLASS_SUPERCLASSES(klass))
@@ -302,8 +939,17 @@ rb_class_update_superclasses(VALUE klass)
             return;
     }
 
-    RCLASS_SUPERCLASSES(klass) = class_superclasses_including_self(super);
-    RCLASS_SUPERCLASS_DEPTH(klass) = RCLASS_SUPERCLASS_DEPTH(super) + 1;
+    super_depth = RCLASS_SUPERCLASS_DEPTH(super);
+    if (RCLASS_SUPERCLASSES_WITH_SELF_P(super)) {
+        superclasses = RCLASS_SUPERCLASSES(super);
+    }
+    else {
+        superclasses = class_superclasses_including_self(super);
+        RCLASS_WRITE_SUPERCLASSES(super, super_depth, superclasses, true);
+    }
+
+    size_t depth = super_depth == RCLASS_MAX_SUPERCLASS_DEPTH ? super_depth : super_depth + 1;
+    RCLASS_WRITE_SUPERCLASSES(klass, depth, superclasses, false);
 }
 
 void
@@ -313,7 +959,7 @@ rb_check_inheritable(VALUE super)
         rb_raise(rb_eTypeError, "superclass must be an instance of Class (given an instance of %"PRIsVALUE")",
                  rb_obj_class(super));
     }
-    if (RBASIC(super)->flags & FL_SINGLETON) {
+    if (RCLASS_SINGLETON_P(super)) {
         rb_raise(rb_eTypeError, "can't make subclass of singleton class");
     }
     if (super == rb_cClass) {
@@ -326,7 +972,15 @@ rb_class_new(VALUE super)
 {
     Check_Type(super, T_CLASS);
     rb_check_inheritable(super);
-    return rb_class_boot(super);
+    VALUE klass = rb_class_boot(super);
+
+    if (super != rb_cObject && super != rb_cBasicObject) {
+        RCLASS_SET_MAX_IV_COUNT(klass, RCLASS_MAX_IV_COUNT(super));
+    }
+
+    RUBY_ASSERT(getenv("RUBY_BOX") || RCLASS_PRIME_CLASSEXT_WRITABLE_P(klass));
+
+    return klass;
 }
 
 VALUE
@@ -339,8 +993,7 @@ 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_cref_t *new_cref = rb_vm_rewrite_cref(me->def->body.iseq.cref, old_klass, new_klass);
         rb_add_method_iseq(new_klass, mid, me->def->body.iseq.iseqptr, new_cref, METHOD_ENTRY_VISI(me));
     }
     else {
@@ -390,64 +1043,86 @@ 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) {
+    if (RCLASS_INITIALIZED_P(clone)) {
         rb_raise(rb_eTypeError, "already initialized class");
     }
-    if (FL_TEST(orig, FL_SINGLETON)) {
+    if (RCLASS_SINGLETON_P(orig)) {
         rb_raise(rb_eTypeError, "can't copy singleton class");
     }
 }
 
+struct cvc_table_copy_ctx {
+    VALUE clone;
+    struct rb_id_table * new_table;
+};
+
+static enum rb_id_table_iterator_result
+cvc_table_copy(ID id, VALUE val, void *data)
+{
+    struct cvc_table_copy_ctx *ctx = (struct cvc_table_copy_ctx *)data;
+    struct rb_cvar_class_tbl_entry * orig_entry;
+    orig_entry = (struct rb_cvar_class_tbl_entry *)val;
+
+    struct rb_cvar_class_tbl_entry *ent;
+
+    ent = ALLOC(struct rb_cvar_class_tbl_entry);
+    ent->class_value = ctx->clone;
+    ent->cref = orig_entry->cref;
+    ent->global_cvar_state = orig_entry->global_cvar_state;
+    rb_id_table_insert(ctx->new_table, id, (VALUE)ent);
+
+    RB_OBJ_WRITTEN(ctx->clone, Qundef, ent->cref);
+
+    return ID_TABLE_CONTINUE;
+}
+
 static void
 copy_tables(VALUE clone, VALUE orig)
 {
     if (RCLASS_CONST_TBL(clone)) {
         rb_free_const_table(RCLASS_CONST_TBL(clone));
-        RCLASS_CONST_TBL(clone) = 0;
+        RCLASS_WRITE_CONST_TBL(clone, 0, false);
     }
-    RCLASS_M_TBL(clone) = 0;
-    if (!RB_TYPE_P(clone, T_ICLASS)) {
-        st_data_t id;
+    if (RCLASS_CVC_TBL(orig)) {
+        struct rb_id_table *rb_cvc_tbl = RCLASS_CVC_TBL(orig);
+        struct rb_id_table *rb_cvc_tbl_dup = rb_id_table_create(rb_id_table_size(rb_cvc_tbl));
 
-        rb_iv_tbl_copy(clone, orig);
-        CONST_ID(id, "__tmp_classpath__");
-        rb_attr_delete(clone, id);
-        CONST_ID(id, "__classpath__");
-        rb_attr_delete(clone, id);
+        struct cvc_table_copy_ctx ctx;
+        ctx.clone = clone;
+        ctx.new_table = rb_cvc_tbl_dup;
+        rb_id_table_foreach(rb_cvc_tbl, cvc_table_copy, &ctx);
+        RCLASS_WRITE_CVC_TBL(clone, rb_cvc_tbl_dup);
+    }
+    rb_id_table_free(RCLASS_M_TBL(clone));
+    RCLASS_WRITE_M_TBL(clone, 0);
+    if (!RB_TYPE_P(clone, T_ICLASS)) {
+        rb_fields_tbl_copy(clone, orig);
     }
     if (RCLASS_CONST_TBL(orig)) {
         struct clone_const_arg arg;
-
-        arg.tbl = RCLASS_CONST_TBL(clone) = rb_id_table_create(0);
+        struct rb_id_table *const_tbl;
+        struct rb_id_table *orig_tbl = RCLASS_CONST_TBL(orig);
+        arg.tbl = const_tbl = rb_id_table_create(rb_id_table_size(orig_tbl));
         arg.klass = clone;
-        rb_id_table_foreach(RCLASS_CONST_TBL(orig), clone_const_i, &arg);
+        rb_id_table_foreach(orig_tbl, clone_const_i, &arg);
+        RCLASS_WRITE_CONST_TBL(clone, const_tbl, false);
     }
 }
 
 static bool ensure_origin(VALUE klass);
 
-/**
- * If this flag is set, that module is allocated but not initialized yet.
- */
-enum {RMODULE_ALLOCATED_BUT_NOT_INITIALIZED = RUBY_FL_USER5};
-
-static inline bool
-RMODULE_UNINITIALIZED(VALUE module)
-{
-    return FL_TEST_RAW(module, RMODULE_ALLOCATED_BUT_NOT_INITIALIZED);
-}
-
 void
-rb_module_set_initialized(VALUE mod)
+rb_class_set_initialized(VALUE klass)
 {
-    FL_UNSET_RAW(mod, RMODULE_ALLOCATED_BUT_NOT_INITIALIZED);
+    RUBY_ASSERT(RB_TYPE_P(klass, T_CLASS) || RB_TYPE_P(klass, T_MODULE));
+    FL_SET_RAW(klass, RCLASS_IS_INITIALIZED);
     /* no more re-initialization */
 }
 
 void
 rb_module_check_initializable(VALUE mod)
 {
-    if (!RMODULE_UNINITIALIZED(mod)) {
+    if (RCLASS_INITIALIZED_P(mod)) {
         rb_raise(rb_eTypeError, "already initialized module");
     }
 }
@@ -456,9 +1131,11 @@ rb_module_check_initializable(VALUE mod)
 VALUE
 rb_mod_init_copy(VALUE clone, VALUE orig)
 {
+    /* Only class or module is valid here, but other classes may enter here and
+     * only hit an exception on the OBJ_INIT_COPY checks
+     */
     switch (BUILTIN_TYPE(clone)) {
       case T_CLASS:
-      case T_ICLASS:
         class_init_copy_check(clone, orig);
         break;
       case T_MODULE:
@@ -469,28 +1146,35 @@ rb_mod_init_copy(VALUE clone, VALUE orig)
     }
     if (!OBJ_INIT_COPY(clone, orig)) return clone;
 
+    RUBY_ASSERT(RB_TYPE_P(orig, T_CLASS) || RB_TYPE_P(orig, T_MODULE));
+    RUBY_ASSERT(BUILTIN_TYPE(clone) == BUILTIN_TYPE(orig));
+
+    rb_class_set_initialized(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);
+    RCLASS_SET_CLONED(clone, true);
+    RCLASS_SET_CLONED(orig, true);
 
-    if (!FL_TEST(CLASS_OF(clone), FL_SINGLETON)) {
+    if (!RCLASS_SINGLETON_P(CLASS_OF(clone))) {
         RBASIC_SET_CLASS(clone, rb_singleton_class_clone(orig));
         rb_singleton_class_attached(METACLASS_OF(clone), (VALUE)clone);
     }
-    RCLASS_ALLOCATOR(clone) = RCLASS_ALLOCATOR(orig);
+    if (BUILTIN_TYPE(clone) == T_CLASS) {
+        RCLASS_SET_ALLOCATOR(clone, RCLASS_ALLOCATOR(orig));
+    }
     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);
+        class_initialize_method_table(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));
+        rb_class_set_super(clone, RCLASS_SUPER(orig));
     }
     else {
         VALUE p = RCLASS_SUPER(orig);
@@ -510,12 +1194,11 @@ rb_mod_init_copy(VALUE clone, VALUE orig)
             if (BUILTIN_TYPE(p) != T_ICLASS) {
                 rb_bug("non iclass between module/class and origin");
             }
-            clone_p = class_alloc(RBASIC(p)->flags, METACLASS_OF(p));
-            RCLASS_SET_SUPER(prev_clone_p, clone_p);
+            clone_p = class_alloc(T_ICLASS, METACLASS_OF(p));
+            RCLASS_SET_M_TBL(clone_p, RCLASS_M_TBL(p));
+            rb_class_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_ALLOCATOR(clone_p) = RCLASS_ALLOCATOR(p);
+            RCLASS_SET_CONST_TBL(clone_p, RCLASS_CONST_TBL(p), false);
             if (RB_TYPE_P(clone, T_CLASS)) {
                 RCLASS_SET_INCLUDER(clone_p, clone);
             }
@@ -527,8 +1210,8 @@ rb_mod_init_copy(VALUE clone, VALUE orig)
             }
             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);
+                RCLASS_WRITE_ORIGIN(RARRAY_AREF(origin_stack, (origin_len -= 2)), clone_p);
+                RICLASS_WRITE_ORIGIN_SHARED_MTBL(clone_p);
                 rb_ary_resize(origin_stack, origin_len);
                 add_subclass = FALSE;
             }
@@ -540,15 +1223,15 @@ rb_mod_init_copy(VALUE clone, VALUE orig)
 
         if (p == orig_origin) {
             if (clone_p) {
-                RCLASS_SET_SUPER(clone_p, clone_origin);
-                RCLASS_SET_SUPER(clone_origin, RCLASS_SUPER(orig_origin));
+                rb_class_set_super(clone_p, clone_origin);
+                rb_class_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);
+                class_initialize_method_table(clone_origin);
                 rb_id_table_foreach(RCLASS_M_TBL(orig_origin), clone_method_i, &arg);
             }
         }
@@ -578,14 +1261,15 @@ rb_singleton_class_clone_and_attach(VALUE obj, VALUE attach)
     // attached to an object other than `obj`. In which case `obj` does not have
     // a material singleton class attached yet and there is no singleton class
     // to clone.
-    if (!(FL_TEST(klass, FL_SINGLETON) && rb_attr_get(klass, id_attached) == obj)) {
+    if (!(RCLASS_SINGLETON_P(klass) && RCLASS_ATTACHED_OBJECT(klass) == obj)) {
         // nothing to clone
         return klass;
     }
     else {
         /* copy singleton(unnamed) class */
         bool klass_of_clone_is_new;
-        VALUE clone = class_alloc(RBASIC(klass)->flags, 0);
+        RUBY_ASSERT(RB_TYPE_P(klass, T_CLASS));
+        VALUE clone = class_alloc(T_CLASS, 0);
 
         if (BUILTIN_TYPE(obj) == T_CLASS) {
             klass_of_clone_is_new = true;
@@ -599,19 +1283,22 @@ rb_singleton_class_clone_and_attach(VALUE obj, VALUE attach)
             RBASIC_SET_CLASS(clone, klass_metaclass_clone);
         }
 
-        RCLASS_SET_SUPER(clone, RCLASS_SUPER(klass));
-        RCLASS_ALLOCATOR(clone) = RCLASS_ALLOCATOR(klass);
-        rb_iv_tbl_copy(clone, klass);
+        // initialize method table before any GC chance
+        class_initialize_method_table(clone);
+
+        rb_class_set_super(clone, RCLASS_SUPER(klass));
+        rb_fields_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);
+            struct rb_id_table *table;
+            arg.tbl = table = rb_id_table_create(rb_id_table_size(RCLASS_CONST_TBL(klass)));
             arg.klass = clone;
             rb_id_table_foreach(RCLASS_CONST_TBL(klass), clone_const_i, &arg);
+            RCLASS_SET_CONST_TBL(clone, table, false);
         }
-        if (attach != Qundef) {
+        if (!UNDEF_P(attach)) {
             rb_singleton_class_attached(clone, attach);
         }
-        RCLASS_M_TBL_INIT(clone);
         {
             struct clone_method_arg arg;
             arg.old_klass = klass;
@@ -630,8 +1317,8 @@ rb_singleton_class_clone_and_attach(VALUE obj, VALUE attach)
 void
 rb_singleton_class_attached(VALUE klass, VALUE obj)
 {
-    if (FL_TEST(klass, FL_SINGLETON)) {
-        rb_class_ivar_set(klass, id_attached, obj);
+    if (RCLASS_SINGLETON_P(klass)) {
+        RCLASS_SET_ATTACHED_OBJECT(klass, obj);
     }
 }
 
@@ -645,17 +1332,17 @@ rb_singleton_class_attached(VALUE klass, VALUE obj)
 static int
 rb_singleton_class_has_metaclass_p(VALUE sklass)
 {
-    return rb_attr_get(METACLASS_OF(sklass), id_attached) == sklass;
+    return RCLASS_ATTACHED_OBJECT(METACLASS_OF(sklass)) == sklass;
 }
 
 int
 rb_singleton_class_internal_p(VALUE sklass)
 {
-    return (RB_TYPE_P(rb_attr_get(sklass, id_attached), T_CLASS) &&
+    return (RB_TYPE_P(RCLASS_ATTACHED_OBJECT(sklass), 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
@@ -664,31 +1351,31 @@ rb_singleton_class_internal_p(VALUE sklass)
     (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.
+/**
+ * ensures `klass` belongs to its own eigenclass.
+ * @return the eigenclass of `klass`
+ * @post `klass` belongs to the returned eigenclass.
+ *       i.e. the attached object of the eigenclass is `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
+/**
+ * Creates a metaclass of `klass`
+ * @param klass     a class
+ * @return          created metaclass for the class
+ * @pre `klass` is a Class object
+ * @pre `klass` has no singleton class.
+ * @post the class of `klass` is the returned class.
+ * @post the returned class is meta^(n+1)-class when `klass` is a meta^(n)-klass for n >= 0
  */
 static inline VALUE
 make_metaclass(VALUE klass)
 {
     VALUE super;
-    VALUE metaclass = rb_class_boot(Qundef);
+    VALUE metaclass = class_boot_boxable(Qundef, FL_TEST_RAW(klass, RCLASS_BOXABLE));
 
     FL_SET(metaclass, FL_SINGLETON);
     rb_singleton_class_attached(metaclass, klass);
@@ -705,7 +1392,8 @@ make_metaclass(VALUE klass)
 
     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);
+    class_associate_super(metaclass, super ? ENSURE_EIGENCLASS(super) : rb_cClass, true);
+    rb_class_set_initialized(klass);
 
     // Full class ancestry may not have been filled until we reach here.
     rb_class_update_superclasses(METACLASS_OF(metaclass));
@@ -713,21 +1401,23 @@ make_metaclass(VALUE klass)
     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.
+/**
+ * Creates a singleton class for `obj`.
+ * @pre `obj` must not be an immediate nor a special const.
+ * @pre `obj` must not be a Class object.
+ * @pre `obj` has no singleton class.
  */
 static inline VALUE
 make_singleton_class(VALUE obj)
 {
     VALUE orig_class = METACLASS_OF(obj);
-    VALUE klass = rb_class_boot(orig_class);
+    VALUE klass = class_boot_boxable(orig_class, FL_TEST_RAW(orig_class, RCLASS_BOXABLE));
 
     FL_SET(klass, FL_SINGLETON);
     RBASIC_SET_CLASS(obj, klass);
     rb_singleton_class_attached(klass, obj);
+    rb_yjit_invalidate_no_singleton_class(orig_class);
+    rb_zjit_invalidate_no_singleton_class(orig_class);
 
     SET_METACLASS_OF(klass, METACLASS_OF(rb_class_real(orig_class)));
     return klass;
@@ -741,7 +1431,7 @@ boot_defclass(const char *name, VALUE super)
     ID id = rb_intern(name);
 
     rb_const_set((rb_cObject ? rb_cObject : obj), id, obj);
-    rb_vm_add_root_module(obj);
+    rb_vm_register_global_object(obj);
     return obj;
 }
 
@@ -797,12 +1487,33 @@ refinement_import_methods(int argc, VALUE *argv, VALUE refinement)
 }
 # endif
 
+/*!
+ *--
+ * \private
+ * Initializes the world of objects and classes.
+ *
+ * At first, the function bootstraps the class hierarchy.
+ * It initializes the most fundamental classes and their metaclasses.
+ * - \c BasicObject
+ * - \c Object
+ * - \c Module
+ * - \c Class
+ * After the bootstrap step, the class hierarchy becomes as the following
+ * diagram.
+ *
+ * \image html boottime-classes.png
+ *
+ * Then, the function defines classes, modules and methods as usual.
+ * \ingroup class
+ *++
+ */
+
 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);
+    rb_vm_register_global_object(rb_cObject);
 
     /* resolve class name ASAP for order-independence */
     rb_set_class_path_string(rb_cObject, rb_cObject, rb_fstring_lit("Object"));
@@ -827,15 +1538,15 @@ Init_class_hierarchy(void)
 }
 
 
-/*!
- * \internal
+/**
+ * @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.
+ * @pre `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)
@@ -861,15 +1572,15 @@ rb_define_class_id(ID id, VALUE super)
 }
 
 
-/*!
+/**
  * Calls Class#inherited.
- * \param super  A class which will be called #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.
+ * @param klass  A Class object which derived from `super`
+ * @return the value `Class#inherited` returns
+ * @pre Each of `super` and `klass` must be a `Class` object.
  */
-MJIT_FUNC_EXPORTED VALUE
+VALUE
 rb_class_inherited(VALUE super, VALUE klass)
 {
     ID inherited;
@@ -882,9 +1593,8 @@ VALUE
 rb_define_class(const char *name, VALUE super)
 {
     VALUE klass;
-    ID id;
+    ID id = rb_intern(name);
 
-    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)) {
@@ -896,14 +1606,14 @@ rb_define_class(const char *name, VALUE super)
         }
 
         /* Class may have been defined in Ruby and not pin-rooted */
-        rb_vm_add_root_module(klass);
+        rb_vm_register_global_object(klass);
         return klass;
     }
     if (!super) {
-        rb_raise(rb_eArgError, "no super class for `%s'", name);
+        rb_raise(rb_eArgError, "no super class for '%s'", name);
     }
     klass = rb_define_class_id(id, super);
-    rb_vm_add_root_module(klass);
+    rb_vm_register_global_object(klass);
     rb_const_set(rb_cObject, id, klass);
     rb_class_inherited(super, klass);
 
@@ -917,7 +1627,7 @@ rb_define_class_under(VALUE outer, const char *name, VALUE super)
 }
 
 VALUE
-rb_define_class_id_under(VALUE outer, ID id, VALUE super)
+rb_define_class_id_under_no_pin(VALUE outer, ID id, VALUE super)
 {
     VALUE klass;
 
@@ -934,30 +1644,34 @@ rb_define_class_id_under(VALUE outer, ID id, VALUE super)
                      " (%"PRIsVALUE" is given but was %"PRIsVALUE")",
                      outer, rb_id2str(id), RCLASS_SUPER(klass), super);
         }
-        /* Class may have been defined in Ruby and not pin-rooted */
-        rb_vm_add_root_module(klass);
 
         return klass;
     }
     if (!super) {
-        rb_raise(rb_eArgError, "no super class for `%"PRIsVALUE"::%"PRIsVALUE"'",
+        rb_raise(rb_eArgError, "no super class for '%"PRIsVALUE"::%"PRIsVALUE"'",
                  rb_class_path(outer), rb_id2str(id));
     }
     klass = rb_define_class_id(id, super);
     rb_set_class_path_string(klass, outer, rb_id2str(id));
     rb_const_set(outer, id, klass);
     rb_class_inherited(super, klass);
-    rb_vm_add_root_module(klass);
 
     return klass;
 }
 
 VALUE
+rb_define_class_id_under(VALUE outer, ID id, VALUE super)
+{
+    VALUE klass = rb_define_class_id_under_no_pin(outer, id, super);
+    rb_vm_register_global_object(klass);
+    return klass;
+}
+
+VALUE
 rb_module_s_alloc(VALUE klass)
 {
     VALUE mod = class_alloc(T_MODULE, klass);
-    RCLASS_M_TBL_INIT(mod);
-    FL_SET(mod, RMODULE_ALLOCATED_BUT_NOT_INITIALIZED);
+    class_initialize_method_table(mod);
     return mod;
 }
 
@@ -965,7 +1679,7 @@ static inline VALUE
 module_new(VALUE klass)
 {
     VALUE mdl = class_alloc(T_MODULE, klass);
-    RCLASS_M_TBL_INIT(mdl);
+    class_initialize_method_table(mdl);
     return (VALUE)mdl;
 }
 
@@ -992,9 +1706,8 @@ VALUE
 rb_define_module(const char *name)
 {
     VALUE module;
-    ID id;
+    ID id = rb_intern(name);
 
-    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)) {
@@ -1002,11 +1715,11 @@ rb_define_module(const char *name)
                      name, rb_obj_class(module));
         }
         /* Module may have been defined in Ruby and not pin-rooted */
-        rb_vm_add_root_module(module);
+        rb_vm_register_global_object(module);
         return module;
     }
     module = rb_module_new();
-    rb_vm_add_root_module(module);
+    rb_vm_register_global_object(module);
     rb_const_set(rb_cObject, id, module);
 
     return module;
@@ -1031,13 +1744,13 @@ rb_define_module_id_under(VALUE outer, ID id)
                      outer, rb_id2str(id), rb_obj_class(module));
         }
         /* Module may have been defined in Ruby and not pin-rooted */
-        rb_gc_register_mark_object(module);
+        rb_vm_register_global_object(module);
         return module;
     }
     module = rb_module_new();
     rb_const_set(outer, id, module);
     rb_set_class_path_string(module, outer, rb_id2str(id));
-    rb_gc_register_mark_object(module);
+    rb_vm_register_global_object(module);
 
     return module;
 }
@@ -1047,21 +1760,24 @@ rb_include_class_new(VALUE module, VALUE super)
 {
     VALUE klass = class_alloc(T_ICLASS, rb_cClass);
 
-    RCLASS_M_TBL(klass) = RCLASS_M_TBL(module);
+    RCLASS_SET_M_TBL(klass, RCLASS_WRITABLE_M_TBL(module));
 
     RCLASS_SET_ORIGIN(klass, klass);
     if (BUILTIN_TYPE(module) == T_ICLASS) {
         module = METACLASS_OF(module);
     }
     RUBY_ASSERT(!RB_TYPE_P(module, T_ICLASS));
-    if (!RCLASS_CONST_TBL(module)) {
-        RCLASS_CONST_TBL(module) = rb_id_table_create(0);
+    if (RCLASS_WRITABLE_CONST_TBL(module)) {
+        RCLASS_SET_CONST_TBL(klass, RCLASS_WRITABLE_CONST_TBL(module), true);
+    }
+    else {
+        RCLASS_WRITE_CONST_TBL(module, rb_id_table_create(0), false);
+        RCLASS_SET_CONST_TBL(klass, RCLASS_WRITABLE_CONST_TBL(module), true);
     }
 
-    RCLASS_CVC_TBL(klass) = RCLASS_CVC_TBL(module);
-    RCLASS_CONST_TBL(klass) = RCLASS_CONST_TBL(module);
+    RCLASS_SET_CVC_TBL(klass, RCLASS_WRITABLE_CVC_TBL(module));
 
-    RCLASS_SET_SUPER(klass, super);
+    class_associate_super(klass, super, true);
     RBASIC_SET_CLASS(klass, module);
 
     return (VALUE)klass;
@@ -1074,7 +1790,7 @@ ensure_includable(VALUE klass, VALUE module)
 {
     rb_class_modify_check(klass);
     Check_Type(module, T_MODULE);
-    rb_module_set_initialized(module);
+    rb_class_set_initialized(module);
     if (!NIL_P(rb_refinement_module_get_refined_class(module))) {
         rb_raise(rb_eArgError, "refinement module is not allowed");
     }
@@ -1092,15 +1808,9 @@ rb_include_module(VALUE klass, VALUE module)
         rb_raise(rb_eArgError, "cyclic include detected");
 
     if (RB_TYPE_P(klass, T_MODULE)) {
-        rb_subclass_entry_t *iclass = RCLASS_SUBCLASSES(klass);
-        // skip the placeholder subclass entry at the head of the list
-        if (iclass) {
-            RUBY_ASSERT(!iclass->klass);
-            iclass = iclass->next;
-        }
-
-        int do_include = 1;
+        rb_subclass_entry_t *iclass = RCLASS_SUBCLASSES_FIRST(klass);
         while (iclass) {
+            int do_include = 1;
             VALUE check_class = iclass->klass;
             /* During lazy sweeping, iclass->klass could be a dead object that
              * has not yet been swept. */
@@ -1167,7 +1877,7 @@ static int
 do_include_modules_at(const VALUE klass, VALUE c, VALUE module, int search_super, bool check_cyclic)
 {
     VALUE p, iclass, origin_stack = 0;
-    int method_changed = 0, add_subclass;
+    int method_changed = 0;
     long origin_len;
     VALUE klass_origin = RCLASS_ORIGIN(klass);
     VALUE original_klass = klass;
@@ -1229,9 +1939,8 @@ do_include_modules_at(const VALUE klass, VALUE c, VALUE module, int search_super
 
         // setup T_ICLASS for the include/prepend module
         iclass = rb_include_class_new(module, super_class);
-        c = RCLASS_SET_SUPER(c, iclass);
+        c = rb_class_set_super(c, iclass);
         RCLASS_SET_INCLUDER(iclass, klass);
-        add_subclass = TRUE;
         if (module != RCLASS_ORIGIN(module)) {
             if (!origin_stack) origin_stack = rb_ary_hidden_new(2);
             VALUE origin[2] = {iclass, RCLASS_ORIGIN(module)};
@@ -1239,17 +1948,14 @@ do_include_modules_at(const VALUE klass, VALUE c, VALUE module, int search_super
         }
         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);
+            RCLASS_WRITE_ORIGIN(RARRAY_AREF(origin_stack, (origin_len -= 2)), iclass);
+            RICLASS_WRITE_ORIGIN_SHARED_MTBL(iclass);
             rb_ary_resize(origin_stack, origin_len);
-            add_subclass = FALSE;
         }
 
-        if (add_subclass) {
-            VALUE m = module;
-            if (BUILTIN_TYPE(m) == T_ICLASS) m = METACLASS_OF(m);
-            rb_module_add_to_subclasses_list(m, iclass);
-        }
+        VALUE m = module;
+        if (BUILTIN_TYPE(m) == T_ICLASS) m = METACLASS_OF(m);
+        rb_module_add_to_subclasses_list(m, iclass);
 
         if (BUILTIN_TYPE(klass) == T_MODULE && FL_TEST(klass, RMODULE_IS_REFINEMENT)) {
             VALUE refined_class =
@@ -1282,7 +1988,7 @@ move_refined_method(ID key, VALUE value, void *data)
 
     if (me->def->type == VM_METHOD_TYPE_REFINED) {
         VALUE klass = (VALUE)data;
-        struct rb_id_table *tbl = RCLASS_M_TBL(klass);
+        struct rb_id_table *tbl = RCLASS_WRITABLE_M_TBL(klass);
 
         if (me->def->body.refined.orig_me) {
             const rb_method_entry_t *orig_me = me->def->body.refined.orig_me, *new_me;
@@ -1323,11 +2029,16 @@ 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);
+        RCLASS_SET_M_TBL(origin, RCLASS_M_TBL(klass));
+        rb_class_set_super(origin, RCLASS_SUPER(klass));
+        rb_class_set_super(klass, origin); // writes origin into RCLASS_SUPER(klass)
+        RCLASS_WRITE_ORIGIN(klass, origin);
+
+        // RCLASS_WRITE_ORIGIN marks origin as an origin, so this is the first
+        // point that it sees M_TBL and may mark it
+        rb_gc_writebarrier_remember(origin);
+
+        class_clear_method_table(klass);
         rb_id_table_foreach(RCLASS_M_TBL(origin), cache_clear_refined_method, (void *)klass);
         rb_id_table_foreach(RCLASS_M_TBL(origin), move_refined_method, (void *)klass);
         return true;
@@ -1352,13 +2063,7 @@ rb_prepend_module(VALUE klass, VALUE module)
         rb_vm_check_redefinition_by_prepend(klass);
     }
     if (RB_TYPE_P(klass, T_MODULE)) {
-        rb_subclass_entry_t *iclass = RCLASS_SUBCLASSES(klass);
-        // skip the placeholder subclass entry at the head of the list if it exists
-        if (iclass) {
-            RUBY_ASSERT(!iclass->klass);
-            iclass = iclass->next;
-        }
-
+        rb_subclass_entry_t *iclass = RCLASS_SUBCLASSES_FIRST(klass);
         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);
@@ -1370,11 +2075,11 @@ rb_prepend_module(VALUE klass, VALUE module)
                 if (klass_had_no_origin && klass_origin_m_tbl == RCLASS_M_TBL(subclass)) {
                     // backfill an origin iclass to handle refinements and future prepends
                     rb_id_table_foreach(RCLASS_M_TBL(subclass), clear_module_cache_i, (void *)subclass);
-                    RCLASS_M_TBL(subclass) = klass_m_tbl;
+                    RCLASS_WRITE_M_TBL(subclass, klass_m_tbl);
                     VALUE origin = rb_include_class_new(klass_origin, RCLASS_SUPER(subclass));
-                    RCLASS_SET_SUPER(subclass, origin);
+                    rb_class_set_super(subclass, origin);
                     RCLASS_SET_INCLUDER(origin, RCLASS_INCLUDER(subclass));
-                    RCLASS_SET_ORIGIN(subclass, origin);
+                    RCLASS_WRITE_ORIGIN(subclass, origin);
                     RICLASS_SET_ORIGIN_SHARED_MTBL(origin);
                 }
                 include_modules_at(subclass, subclass, module, FALSE);
@@ -1450,7 +2155,7 @@ rb_mod_include_p(VALUE mod, VALUE mod2)
 
     Check_Type(mod2, T_MODULE);
     for (p = RCLASS_SUPER(mod); p; p = RCLASS_SUPER(p)) {
-        if (BUILTIN_TYPE(p) == T_ICLASS && !FL_TEST(p, RICLASS_IS_ORIGIN)) {
+        if (BUILTIN_TYPE(p) == T_ICLASS && !RICLASS_IS_ORIGIN_P(p)) {
             if (METACLASS_OF(p) == mod2) return Qtrue;
         }
     }
@@ -1510,7 +2215,7 @@ class_descendants_recursive(VALUE klass, VALUE v)
 {
     struct subclass_traverse_data *data = (struct subclass_traverse_data *) v;
 
-    if (BUILTIN_TYPE(klass) == T_CLASS && !FL_TEST(klass, FL_SINGLETON)) {
+    if (BUILTIN_TYPE(klass) == T_CLASS && !RCLASS_SINGLETON_P(klass)) {
         if (data->buffer && data->count < data->maxcount && !rb_objspace_garbage_object_p(klass)) {
             // assumes that this does not cause GC as long as the length does not exceed the capacity
             rb_ary_push(data->buffer, klass);
@@ -1566,6 +2271,27 @@ class_descendants(VALUE klass, bool immediate_only)
  *     A.subclasses        #=> [D, B]
  *     B.subclasses        #=> [C]
  *     C.subclasses        #=> []
+ *
+ *  Anonymous subclasses (not associated with a constant) are
+ *  returned, too:
+ *
+ *     c = Class.new(A)
+ *     A.subclasses        # => [#<Class:0x00007f003c77bd78>, D, B]
+ *
+ *  Note that the parent does not hold references to subclasses
+ *  and doesn't prevent them from being garbage collected. This
+ *  means that the subclass might disappear when all references
+ *  to it are dropped:
+ *
+ *     # drop the reference to subclass, it can be garbage-collected now
+ *     c = nil
+ *
+ *     A.subclasses
+ *     # It can be
+ *     #  => [#<Class:0x00007f003c77bd78>, D, B]
+ *     # ...or just
+ *     #  => [D, B]
+ *     # ...depending on whether garbage collector was run
  */
 
 VALUE
@@ -1594,11 +2320,11 @@ rb_class_subclasses(VALUE klass)
 VALUE
 rb_class_attached_object(VALUE klass)
 {
-    if (!FL_TEST(klass, FL_SINGLETON)) {
-        rb_raise(rb_eTypeError, "`%"PRIsVALUE"' is not a singleton class", klass);
+    if (!RCLASS_SINGLETON_P(klass)) {
+        rb_raise(rb_eTypeError, "'%"PRIsVALUE"' is not a singleton class", klass);
     }
 
-    return rb_attr_get(klass, id_attached);
+    return RCLASS_ATTACHED_OBJECT(klass);
 }
 
 static void
@@ -1697,7 +2423,7 @@ static bool
 particular_class_p(VALUE mod)
 {
     if (!mod) return false;
-    if (FL_TEST(mod, FL_SINGLETON)) return true;
+    if (RCLASS_SINGLETON_P(mod)) return true;
     if (BUILTIN_TYPE(mod) == T_ICLASS) return true;
     return false;
 }
@@ -1974,19 +2700,19 @@ rb_obj_singleton_methods(int argc, const VALUE *argv, VALUE obj)
     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)) {
+    if (RCLASS_SINGLETON_P(obj)) {
         rb_singleton_class(obj);
     }
     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 (klass && RCLASS_SINGLETON_P(klass)) {
         if ((mtbl = RCLASS_M_TBL(origin)) != 0) rb_id_table_foreach(mtbl, method_entry_i, &me_arg);
         klass = RCLASS_SUPER(klass);
     }
     if (recur) {
-        while (klass && (FL_TEST(klass, FL_SINGLETON) || RB_TYPE_P(klass, T_ICLASS))) {
+        while (klass && (RCLASS_SINGLETON_P(klass) || 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);
         }
@@ -2090,17 +2816,17 @@ rb_special_singleton_class(VALUE obj)
     return special_singleton_class_of(obj);
 }
 
-/*!
- * \internal
- * Returns the singleton class of \a obj. Creates it if necessary.
+/**
+ * @internal
+ * Returns the singleton class of `obj`. Creates it if necessary.
  *
- * \note DO NOT expose the returned singleton class to
+ * @note DO NOT expose the returned singleton class to
  *       outside of class.c.
- *       Use \ref rb_singleton_class instead for
+ *       Use @ref rb_singleton_class instead for
  *       consistency of the metaclass hierarchy.
  */
 static VALUE
-singleton_class_of(VALUE obj)
+singleton_class_of(VALUE obj, bool ensure_eigenclass)
 {
     VALUE klass;
 
@@ -2120,18 +2846,34 @@ singleton_class_of(VALUE obj)
         return klass;
 
       case T_STRING:
-        if (FL_TEST_RAW(obj, RSTRING_FSTR)) {
+        if (CHILLED_STRING_P(obj)) {
+            CHILLED_STRING_MUTATED(obj);
+        }
+        else if (FL_TEST_RAW(obj, RSTRING_FSTR)) {
             rb_raise(rb_eTypeError, "can't define singleton");
         }
     }
 
-    klass = METACLASS_OF(obj);
-    if (!(FL_TEST(klass, FL_SINGLETON) &&
-          rb_attr_get(klass, id_attached) == obj)) {
-        klass = rb_make_metaclass(obj, klass);
+    bool needs_lock = rb_multi_ractor_p() && rb_ractor_shareable_p(obj);
+    unsigned int lev;
+    if (needs_lock) {
+        RB_VM_LOCK_ENTER_LEV(&lev);
+    }
+    {
+        klass = METACLASS_OF(obj);
+        if (!(RCLASS_SINGLETON_P(klass) &&
+            RCLASS_ATTACHED_OBJECT(klass) == obj)) {
+            klass = rb_make_metaclass(obj, klass);
+        }
+        RB_FL_SET_RAW(klass, RB_OBJ_FROZEN_RAW(obj));
+        if (ensure_eigenclass && RB_TYPE_P(obj, T_CLASS)) {
+            /* ensures an exposed class belongs to its own eigenclass */
+            (void)ENSURE_EIGENCLASS(klass);
+        }
+    }
+    if (needs_lock) {
+        RB_VM_LOCK_LEAVE_LEV(&lev);
     }
-
-    RB_FL_SET_RAW(klass, RB_OBJ_FROZEN_RAW(obj));
 
     return klass;
 }
@@ -2140,21 +2882,22 @@ void
 rb_freeze_singleton_class(VALUE x)
 {
     /* should not propagate to meta-meta-class, and so on */
-    if (!(RBASIC(x)->flags & FL_SINGLETON)) {
+    if (!RCLASS_SINGLETON_P(x)) {
         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);
+        if (klass && // no class when hidden from ObjectSpace
+            FL_TEST_RAW(klass, FL_SINGLETON) &&
+            !OBJ_FROZEN_RAW(klass)) {
+            OBJ_FREEZE(klass);
         }
     }
 }
 
-/*!
- * Returns the singleton class of \a obj, or nil if obj is not a
+/**
+ * Returns the singleton class of `obj`, or nil if obj is not a
  * singleton object.
  *
- * \param obj an arbitrary object.
- * \return the singleton class or nil.
+ * @param obj an arbitrary object.
+ * @return the singleton class or nil.
  */
 VALUE
 rb_singleton_class_get(VALUE obj)
@@ -2165,20 +2908,15 @@ rb_singleton_class_get(VALUE obj)
         return rb_special_singleton_class(obj);
     }
     klass = METACLASS_OF(obj);
-    if (!FL_TEST(klass, FL_SINGLETON)) return Qnil;
-    if (rb_attr_get(klass, id_attached) != obj) return Qnil;
+    if (!RCLASS_SINGLETON_P(klass)) return Qnil;
+    if (RCLASS_ATTACHED_OBJECT(klass) != obj) return Qnil;
     return klass;
 }
 
 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;
+    return singleton_class_of(obj, true);
 }
 
 /*!
@@ -2196,7 +2934,7 @@ rb_singleton_class(VALUE obj)
 void
 rb_define_singleton_method(VALUE obj, const char *name, VALUE (*func)(ANYARGS), int argc)
 {
-    rb_define_method(singleton_class_of(obj), name, func, argc);
+    rb_define_method(singleton_class_of(obj, false), name, func, argc);
 }
 
 #ifdef rb_define_module_function
@@ -2230,7 +2968,7 @@ rb_define_attr(VALUE klass, const char *name, int read, int write)
     rb_attr(klass, rb_intern(name), read, write, FALSE);
 }
 
-MJIT_FUNC_EXPORTED VALUE
+VALUE
 rb_keyword_error_new(const char *error, VALUE keys)
 {
     long i = 0, len = RARRAY_LEN(keys);
diff --git a/common.mk b/common.mk
index 979e0b90de..8891b65ed9 100644
--- a/common.mk
+++ b/common.mk
@@ -1,10 +1,12 @@
 # -*- mode: makefile-gmake; indent-tabs-mode: t -*-
+# This fragment can be used with nmake.exe and with bsdmake.
+# Avoid features specific to GNU Make.
 
 bin: $(PROGRAM) $(WPROGRAM)
 lib: $(LIBRUBY)
 dll: $(LIBRUBY_SO)
 
-.SUFFIXES: .rbinc .rb .inc .h .c .y .i .$(ASMEXT) .$(DTRACE_EXT)
+.SUFFIXES: .rbinc .rbbin .rb .inc .h .c .y .i .$(ASMEXT) .$(DTRACE_EXT)
 
 # V=0 quiet, V=1 verbose.  other values don't work.
 V = 0
@@ -16,9 +18,10 @@ ECHO = @$(ECHO0)
 
 mflags = $(MFLAGS)
 gnumake_recursive =
+sequential = $(gnumake:yes=-sequential)
 enable_shared = $(ENABLE_SHARED:no=)
 
-UNICODE_VERSION = 14.0.0
+UNICODE_VERSION = 17.0.0
 UNICODE_EMOJI_VERSION_0 = $(UNICODE_VERSION)///
 UNICODE_EMOJI_VERSION_1 = $(UNICODE_EMOJI_VERSION_0:.0///=)
 UNICODE_EMOJI_VERSION = $(UNICODE_EMOJI_VERSION_1:///=)
@@ -41,22 +44,21 @@ RUBYLIB       = $(PATH_SEPARATOR)
 RUBYOPT       = -
 RUN_OPTS      = --disable-gems
 
+GIT_IN_SRC    = $(GIT) -C $(srcdir)
+GIT_LOG       = $(GIT_IN_SRC) log --no-show-signature
+GIT_LOG_FORMAT = $(GIT_LOG) "--pretty=format:"
+
 # GITPULLOPTIONS = --no-tags
 
-INCFLAGS = -I. -I$(arch_hdrdir) -I$(hdrdir) -I$(srcdir) -I$(UNICODE_HDR_DIR)
+PRISM_SRCDIR = $(srcdir)/prism
+INCFLAGS = -I. -I$(arch_hdrdir) -I$(ext_hdrdir) -I$(hdrdir) -I$(srcdir) -I$(PRISM_SRCDIR) -I$(UNICODE_HDR_DIR) $(incflags)
 
 GEM_HOME =
 GEM_PATH =
 GEM_VENDOR =
 
 BENCHMARK_DRIVER_GIT_URL = https://github.com/benchmark-driver/benchmark-driver
-BENCHMARK_DRIVER_GIT_REF = v0.16.0
-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
+BENCHMARK_DRIVER_GIT_REF = v0.16.3
 
 STATIC_RUBY   = static-ruby
 
@@ -67,32 +69,62 @@ 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
+RDOC          = $(XRUBY) "$(tooldir)/rdoc-srcdir"
 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 \
-	--title "Documentation for Ruby $(RUBY_API_VERSION)" \
-	--main README.md
+RDOC_GEN_OPTS = --no-force-update \
+	$(empty)
 
 INITOBJS      = dmyext.$(OBJEXT) dmyenc.$(OBJEXT)
 NORMALMAINOBJ = main.$(OBJEXT)
 MAINOBJ       = $(NORMALMAINOBJ)
 DLDOBJS	      = $(INITOBJS)
 EXTSOLIBS     =
-MINIOBJS      = $(ARCHMINIOBJS) miniinit.$(OBJEXT) dmyext.$(OBJEXT)
+MINIOBJS      = $(ARCHMINIOBJS) miniinit.$(OBJEXT)
 ENC_MK        = enc.mk
 MAKE_ENC      = -f $(ENC_MK) V="$(V)" UNICODE_HDR_DIR="$(UNICODE_HDR_DIR)" \
 		RUBY="$(BOOTSTRAPRUBY)" MINIRUBY="$(BOOTSTRAPRUBY)" $(mflags)
 
-COMMONOBJS    = array.$(OBJEXT) \
+PRISM_BUILD_DIR = prism
+
+PRISM_FILES = prism/api_node.$(OBJEXT) \
+		prism/api_pack.$(OBJEXT) \
+		prism/diagnostic.$(OBJEXT) \
+		prism/encoding.$(OBJEXT) \
+		prism/extension.$(OBJEXT) \
+		prism/node.$(OBJEXT) \
+		prism/options.$(OBJEXT) \
+		prism/pack.$(OBJEXT) \
+		prism/prettyprint.$(OBJEXT) \
+		prism/regexp.$(OBJEXT) \
+		prism/serialize.$(OBJEXT) \
+		prism/static_literals.$(OBJEXT) \
+		prism/token_type.$(OBJEXT) \
+		prism/util/pm_buffer.$(OBJEXT) \
+		prism/util/pm_char.$(OBJEXT) \
+		prism/util/pm_constant_pool.$(OBJEXT) \
+		prism/util/pm_integer.$(OBJEXT) \
+		prism/util/pm_list.$(OBJEXT) \
+		prism/util/pm_memchr.$(OBJEXT) \
+		prism/util/pm_newline_list.$(OBJEXT) \
+		prism/util/pm_string.$(OBJEXT) \
+		prism/util/pm_strncasecmp.$(OBJEXT) \
+		prism/util/pm_strpbrk.$(OBJEXT) \
+		prism/prism.$(OBJEXT) \
+		prism_init.$(OBJEXT)
+
+COMMONOBJS    = \
+		array.$(OBJEXT) \
 		ast.$(OBJEXT) \
 		bignum.$(OBJEXT) \
+		box.$(OBJEXT) \
 		class.$(OBJEXT) \
 		compar.$(OBJEXT) \
 		compile.$(OBJEXT) \
 		complex.$(OBJEXT) \
+		concurrent_set.$(OBJEXT) \
 		cont.$(OBJEXT) \
 		debug.$(OBJEXT) \
 		debug_counter.$(OBJEXT) \
@@ -106,6 +138,7 @@ COMMONOBJS    = array.$(OBJEXT) \
 		file.$(OBJEXT) \
 		gc.$(OBJEXT) \
 		hash.$(OBJEXT) \
+		imemo.$(OBJEXT) \
 		inits.$(OBJEXT) \
 		io.$(OBJEXT) \
 		io_buffer.$(OBJEXT) \
@@ -114,13 +147,14 @@ COMMONOBJS    = array.$(OBJEXT) \
 		marshal.$(OBJEXT) \
 		math.$(OBJEXT) \
 		memory_view.$(OBJEXT) \
-		mjit.$(OBJEXT) \
-		mjit_compiler.$(OBJEXT) \
 		node.$(OBJEXT) \
+		node_dump.$(OBJEXT) \
 		numeric.$(OBJEXT) \
 		object.$(OBJEXT) \
 		pack.$(OBJEXT) \
+		pathname.$(OBJEXT) \
 		parse.$(OBJEXT) \
+		parser_st.$(OBJEXT) \
 		proc.$(OBJEXT) \
 		process.$(OBJEXT) \
 		ractor.$(OBJEXT) \
@@ -135,7 +169,9 @@ COMMONOBJS    = array.$(OBJEXT) \
 		regparse.$(OBJEXT) \
 		regsyntax.$(OBJEXT) \
 		ruby.$(OBJEXT) \
+		ruby_parser.$(OBJEXT) \
 		scheduler.$(OBJEXT) \
+		set.$(OBJEXT) \
 		shape.$(OBJEXT) \
 		signal.$(OBJEXT) \
 		sprintf.$(OBJEXT) \
@@ -147,7 +183,6 @@ COMMONOBJS    = array.$(OBJEXT) \
 		thread.$(OBJEXT) \
 		time.$(OBJEXT) \
 		transcode.$(OBJEXT) \
-		transient_heap.$(OBJEXT) \
 		util.$(OBJEXT) \
 		variable.$(OBJEXT) \
 		version.$(OBJEXT) \
@@ -156,20 +191,31 @@ COMMONOBJS    = array.$(OBJEXT) \
 		vm_dump.$(OBJEXT) \
 		vm_sync.$(OBJEXT) \
 		vm_trace.$(OBJEXT) \
+		weakmap.$(OBJEXT) \
+		$(PRISM_FILES) \
 		$(YJIT_OBJ) \
+		$(ZJIT_OBJ) \
+		$(JIT_OBJ) \
+		$(RUST_LIBOBJ) \
 		$(COROUTINE_OBJ) \
 		$(DTRACE_OBJ) \
 		$(BUILTIN_ENCOBJS) \
 		$(BUILTIN_TRANSOBJS) \
 		$(MISSING)
 
+$(PRISM_FILES): $(PRISM_BUILD_DIR)/.time $(PRISM_BUILD_DIR)/util/.time
+
+$(PRISM_BUILD_DIR)/.time $(PRISM_BUILD_DIR)/util/.time:
+	$(Q) $(MAKEDIRS) $(@D)
+	@$(NULLCMD) > $@
+
 EXPORTOBJS    = $(DLNOBJ) \
 		localeinit.$(OBJEXT) \
 		loadpath.$(OBJEXT) \
 		$(COMMONOBJS)
 
 OBJS          = $(EXPORTOBJS) builtin.$(OBJEXT)
-ALLOBJS       = $(NORMALMAINOBJ) $(MINIOBJS) $(COMMONOBJS) $(INITOBJS)
+ALLOBJS       = $(OBJS) $(MINIOBJS) $(INITOBJS) $(MAINOBJ)
 
 GOLFOBJS      = goruby.$(OBJEXT)
 
@@ -177,7 +223,7 @@ DEFAULT_PRELUDES = $(GEM_PRELUDE)
 PRELUDE_SCRIPTS = $(DEFAULT_PRELUDES)
 GEM_PRELUDE   =
 PRELUDES      = {$(srcdir)}miniprelude.c
-GOLFPRELUDES  = {$(srcdir)}golf_prelude.c
+GOLFPRELUDES  = golf_prelude.rbbin
 
 SCRIPT_ARGS   =	--dest-dir="$(DESTDIR)" \
 		--extout="$(EXTOUT)" \
@@ -201,7 +247,7 @@ INSTALL_DATA_MODE = 0644
 BOOTSTRAPRUBY_COMMAND = $(BOOTSTRAPRUBY) $(BOOTSTRAPRUBY_OPT)
 TESTSDIR      = $(srcdir)/test
 TOOL_TESTSDIR = $(tooldir)/test
-TEST_EXCLUDES = --excludes-dir=$(TESTSDIR)/excludes --name=!/memory_leak/
+TEST_EXCLUDES = --excludes-dir=$(TESTSDIR)/.excludes --name=!/memory_leak/
 TESTWORKDIR   = testwork
 TESTOPTS      = $(RUBY_TESTOPTS)
 
@@ -222,70 +268,24 @@ MAKE_LINK = $(MINIRUBY) -rfileutils -e "include FileUtils::Verbose" \
 
 # For release builds
 YJIT_RUSTC_ARGS = --crate-name=yjit \
-	--crate-type=staticlib \
+	$(JIT_RUST_FLAGS) \
+	$(RUSTC_FLAGS) \
 	--edition=2021 \
-	-C opt-level=3 \
-	-C overflow-checks=on \
 	'--out-dir=$(CARGO_TARGET_DIR)/release/' \
-	$(top_srcdir)/yjit/src/lib.rs
+	'$(top_srcdir)/yjit/src/lib.rs'
 
-all: $(SHOWFLAGS) main docs
+ZJIT_RUSTC_ARGS = --crate-name=zjit \
+	$(JIT_RUST_FLAGS) \
+	$(RUSTC_FLAGS) \
+	--edition=2024 \
+	'--out-dir=$(CARGO_TARGET_DIR)/release/' \
+	'$(top_srcdir)/zjit/src/lib.rs'
+
+all: $(SHOWFLAGS) main
 
 main: $(SHOWFLAGS) exts $(ENCSTATIC:static=lib)encs
 	@$(NULLCMD)
 
-main: $(srcdir)/lib/mjit/instruction.rb
-srcs: $(srcdir)/lib/mjit/instruction.rb
-$(srcdir)/lib/mjit/instruction.rb: $(tooldir)/insns2vm.rb $(tooldir)/ruby_vm/views/lib/mjit/instruction.rb.erb $(srcdir)/insns.def
-	$(ECHO) generating $@
-	$(Q) $(BASERUBY) -Ku $(tooldir)/insns2vm.rb --basedir="$(srcdir)" $(INSNS2VMOPT) $@
-
-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
-
-.PHONY: mjit-bindgen
-mjit-bindgen:
-	$(Q)$(XRUBY) -C $(srcdir) -Ilib \
-		-e 'ENV["GEM_HOME"] = File.expand_path(".bundle")' \
-		-e 'ENV["BUNDLE_APP_CONFIG"] = File.expand_path(".bundle")' \
-		-e 'ENV["BUNDLE_PATH__SYSTEM"] = "true"' \
-		-e 'ENV["BUNDLE_WITHOUT"] = "lint doc"' \
-		-e 'load "spec/bundler/support/bundle.rb"' -- install --gemfile=tool/mjit/Gemfile
-	$(Q)$(XRUBY) -C $(srcdir) -Ilib \
-		-e 'ENV["GEM_HOME"] = File.expand_path(".bundle")' \
-		-e 'ENV["BUNDLE_APP_CONFIG"] = File.expand_path(".bundle")' \
-		-e 'ENV["BUNDLE_GEMFILE"] = "tool/mjit/Gemfile"' \
-		-e 'ENV["BUNDLE_PATH__SYSTEM"] = "true"' \
-		-e 'ENV["BUNDLE_WITHOUT"] = "lint doc"' \
-		-e 'load "spec/bundler/support/bundle.rb"' -- exec tool/mjit/bindgen.rb $(CURDIR)
-
-# These rules using MJIT_HEADER_SUFFIX must be in common.mk, not
-# Makefile.in, in order to override the macro in defs/universal.mk.
-
-# Other `-Dxxx`s preceding `-DMJIT_HEADER` will be removed in transform_mjit_header.rb.
-# So `-DMJIT_HEADER` should be passed first when rb_mjit_header.h is generated.
-$(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)
-	$(Q)$(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 $@
-	$(Q)$(MINIRUBY) $(tooldir)/transform_mjit_header.rb "$(CC) $(CFLAGS) -w" $(MJIT_HEADER:.h=)$(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:
@@ -305,6 +305,7 @@ showflags:
 	"	MFLAGS = $(MFLAGS)" \
 	"	RUSTC = $(RUSTC)" \
 	"	YJIT_RUSTC_ARGS = $(YJIT_RUSTC_ARGS)" \
+	"	ZJIT_RUSTC_ARGS = $(ZJIT_RUSTC_ARGS)" \
 	$(MESSAGE_END)
 	-@$(CC_VERSION)
 
@@ -340,7 +341,8 @@ configure-ext: $(EXTS_MK)
 
 build-ext: $(EXTS_MK)
 	$(Q)$(MAKE) -f $(EXTS_MK) $(mflags) libdir="$(libdir)" LIBRUBY_EXTS=$(LIBRUBY_EXTS) \
-	    EXTENCS="$(ENCOBJS)" MINIRUBY="$(MINIRUBY)" UPDATE_LIBRARIES=no $(EXTSTATIC)
+	    EXTENCS="$(ENCOBJS)" BASERUBY="$(BASERUBY)" MINIRUBY="$(MINIRUBY)" \
+	    $(EXTSTATIC)
 	$(Q)$(MAKE) $(EXTS_NOTE)
 
 exts-note: $(EXTS_MK)
@@ -356,7 +358,7 @@ programs: $(PROGRAM) $(WPROGRAM) $(arch)-fake.rb
 
 $(PREP): $(MKFILES)
 
-miniruby$(EXEEXT): config.status $(ALLOBJS) $(ARCHFILE)
+miniruby$(EXEEXT): config.status $(NORMALMAINOBJ) $(MINIOBJS) $(COMMONOBJS) $(ARCHFILE)
 
 objs: $(ALLOBJS)
 
@@ -383,8 +385,8 @@ Doxyfile: $(srcdir)/template/Doxyfile.tmpl $(PREP) $(tooldir)/generic_erb.rb $(R
 	$(Q) $(MINIRUBY) $(tooldir)/generic_erb.rb -o $@ $(srcdir)/template/Doxyfile.tmpl \
 	--srcdir="$(srcdir)" --miniruby="$(MINIRUBY)"
 
-program: $(SHOWFLAGS) $(PROGRAM)
-wprogram: $(SHOWFLAGS) $(WPROGRAM)
+program: $(SHOWFLAGS) $(DOT_WAIT) $(PROGRAM)
+wprogram: $(SHOWFLAGS) $(DOT_WAIT) $(WPROGRAM)
 mini: PHONY miniruby$(EXEEXT)
 
 $(PROGRAM) $(WPROGRAM): $(LIBRUBY) $(MAINOBJ) $(OBJS) $(EXTOBJS) $(SETUP) $(PREP)
@@ -404,27 +406,27 @@ 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)
+docs: srcs-doc $(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
+INSTALL_ALL = all
+
+install-all: 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=all $(INSTALL_DOC_OPTS)
+do-install-all: pre-install-all $(DOT_WAIT) docs
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=$(INSTALL_ALL) $(INSTALL_DOC_OPTS)
 post-install-all:: post-install-local post-install-ext post-install-gem post-install-doc
 	@$(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) --install=all --exclude=doc
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=$(INSTALL_ALL) --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
@@ -499,7 +501,7 @@ 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)
+	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=$(INSTALL_ALL) $(INSTALL_DOC_OPTS)
 post-no-install-all:: post-no-install-local post-no-install-ext post-no-install-doc
 	@$(NULLCMD)
 
@@ -604,17 +606,30 @@ do-install-dbg: $(PROGRAM) pre-install-dbg
 post-install-dbg::
 	@$(NULLCMD)
 
-rdoc: PHONY main
+srcs-doc: prepare-gems
+
+rdoc: PHONY main srcs-doc
 	@echo Generating RDoc documentation
-	$(Q) $(RDOC) --ri --op "$(RDOCOUT)" $(RDOC_GEN_OPTS) $(RDOCFLAGS) "$(srcdir)"
+	$(Q) $(RDOC) --ri --op "$(RDOCOUT)" $(RDOC_GEN_OPTS) $(RDOCFLAGS) .
 
-html: PHONY main
+html: PHONY main srcs-doc
 	@echo Generating RDoc HTML files
-	$(Q) $(RDOC) --op "$(HTMLOUT)" $(RDOC_GEN_OPTS) $(RDOCFLAGS) "$(srcdir)"
+	$(Q) $(RDOC) --op "$(HTMLOUT)" $(RDOC_GEN_OPTS) $(RDOCFLAGS) .
+
+RDOC_COVERAGE_EXCLUDES = -x ^ext/json -x ^ext/openssl -x ^ext/psych \
+	-x ^lib/bundler -x ^lib/rubygems \
+	-x ^lib/did_you_mean -x ^lib/error_highlight -x ^lib/syntax_suggest
 
-rdoc-coverage: PHONY main
+rdoc-coverage: PHONY main srcs-doc
 	@echo Generating RDoc coverage report
-	$(Q) $(RDOC) --quiet -C $(RDOCFLAGS) "$(srcdir)"
+	$(Q) $(RDOC) --quiet -C $(RDOCFLAGS) $(RDOC_COVERAGE_EXCLUDES) .
+
+undocumented: PHONY main srcs-doc
+	$(Q) $(RDOC) --quiet -C $(RDOCFLAGS) $(RDOC_COVERAGE_EXCLUDES) . | \
+	sed -n \
+	-e '/^ *# in file /{' -e 's///;N;s/\n/: /p' -e '}' \
+	-e 's/^ *\(.*[^ ]\) *# in file \(.*\)/\2: \1/p' | \
+	sort -t: -k1,1 -k2n,2
 
 RDOCBENCHOUT=/tmp/rdocbench
 
@@ -643,22 +658,27 @@ 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: clean-ext clean-enc clean-golf clean-docs clean-extout clean-modular-gc clean-local clean-platform clean-spec
 clean-local:: clean-runnable
-	$(Q)$(RM) $(OBJS) $(MINIOBJS) $(MAINOBJ) $(LIBRUBY_A) $(LIBRUBY_SO) $(LIBRUBY) $(LIBRUBY_ALIASES)
+	$(Q)$(RM) $(ALLOBJS) $(LIBRUBY_A) $(LIBRUBY_SO) $(LIBRUBY) $(LIBRUBY_ALIASES)
 	$(Q)$(RM) $(PROGRAM) $(WPROGRAM) miniruby$(EXEEXT) dmyext.$(OBJEXT) dmyenc.$(OBJEXT) $(ARCHFILE) .*.time
 	$(Q)$(RM) y.tab.c y.output encdb.h transdb.h config.log rbconfig.rb $(ruby_pc) $(COROUTINE_H:/Context.h=/.time)
 	$(Q)$(RM) probes.h probes.$(OBJEXT) probes.stamp ruby-glommed.$(OBJEXT) ruby.imp ChangeLog $(STATIC_RUBY)$(EXEEXT)
-	$(Q)$(RM) GNUmakefile.old Makefile.old $(arch)-fake.rb bisect.sh $(ENC_TRANS_D) builtin_binary.inc
-	-$(Q)$(RMALL) yjit/target
-	-$(Q) $(RMDIR) enc/jis enc/trans enc $(COROUTINE_H:/Context.h=) coroutine 2> $(NULL) || $(NULLCMD)
+	$(Q)$(RM) GNUmakefile.old Makefile.old $(arch)-fake.rb bisect.sh $(ENC_TRANS_D) builtin_binary.rbbin
+	$(Q)$(RM) $(PRISM_BUILD_DIR)/.time $(PRISM_BUILD_DIR)/*/.time yjit_exit_locations.dump
+	-$(Q)$(RMALL) target
+	-$(Q) $(RMDIR) enc/jis enc/trans enc $(COROUTINE_H:/Context.h=) coroutine target \
+	  $(PRISM_BUILD_DIR)/*/ $(PRISM_BUILD_DIR) tmp \
+	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)
+	$(Q)$(CHDIR) lib 2>$(NULL) && $(RM) $(LIBRUBY_A) $(LIBRUBY) $(LIBRUBY_ALIASES) $(RUBY_BASE_NAME)/$(ruby_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) || $(NULLCMD)
+	-$(Q)$(RM) $(EXTOUT)/$(arch)/rbconfig.rb $(EXTOUT)/common/$(arch)
+	-$(Q)$(RMALL) exe/
 clean-ext:: PHONY
 clean-golf: PHONY
 	$(Q)$(RM) $(GORUBY)$(EXEEXT) $(GOLFOBJS)
@@ -672,13 +692,14 @@ 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: distclean-ext distclean-enc distclean-golf distclean-docs distclean-extout distclean-modular-gc distclean-local distclean-platform distclean-spec
 distclean-local:: clean-local
-	$(Q)$(RM) $(MKFILES) yasmdata.rb *.inc $(PRELUDES) *.rbinc
+	$(Q)$(RM) $(MKFILES) *.inc $(PRELUDES) *.rbinc *.rbbin
 	$(Q)$(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-local:: distclean-srcs-local
+distclean-ext:: distclean-srcs-ext
 distclean-golf: clean-golf
 distclean-rdoc: clean-rdoc
 distclean-html: clean-html
@@ -693,23 +714,26 @@ realclean:: realclean-ext realclean-local realclean-enc realclean-golf realclean
 realclean-local:: distclean-local realclean-srcs-local
 
 clean-srcs:: clean-srcs-local clean-srcs-ext
+distclean-srcs:: distclean-srcs-local distclean-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
+distclean-srcs-local:: clean-srcs-local
+
+realclean-srcs-local:: distclean-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 \
+	  id.c id.h probes.dmyh configure aclocal.m4 tool/config.guess tool/config.sub \
+	  $(PRISM_SRCDIR)/srcs.mk gems/*.gem \
 	|| $(NULLCMD)
 
 clean-srcs-ext::
-realclean-srcs-ext:: clean-srcs-ext
+distclean-srcs-ext:: clean-srcs-ext
+realclean-srcs-ext:: distclean-srcs-ext
 
 realclean-ext:: PHONY
 realclean-golf: distclean-golf
@@ -769,15 +793,22 @@ clean-capi distclean-capi realclean-capi:
 
 clean-platform distclean-platform realclean-platform:
 	$(Q) $(RM) $(PLATFORM_D)
-	-$(Q) $(RMDIR) $(PLATFORM_DIR) 2> $(NULL) || $(NULLCMD)
+	-$(Q) $(RMDIR) $(PLATFORM_DIR) $(TIMESTAMPDIR) 2> $(NULL) || $(NULLCMD)
 
 RUBYSPEC_CAPIEXT = spec/ruby/optional/capi/ext
+RUBYSPEC_CAPIEXT_SRCDIR = $(srcdir)/$(RUBYSPEC_CAPIEXT)
+RUBYSPEC_CAPIEXT_DEPS = $(RUBYSPEC_CAPIEXT_SRCDIR)/rubyspec.h $(RUBY_H_INCLUDES) {$(VPATH)}internal/abi.h $(LIBRUBY)
+RUBYSPEC_CAPIEXT_BUILD = $(enable_shared:yes=rubyspec-capiext)
+
+rubyspec-capiext: build-ext $(DOT_WAIT)
+# make-dependent rules should be included after this and built after build-ext.
+
 clean-spec: PHONY
 	-$(Q) $(RM) $(RUBYSPEC_CAPIEXT)/*.$(OBJEXT) $(RUBYSPEC_CAPIEXT)/*.$(DLEXT)
 	-$(Q) $(RMDIRS) $(RUBYSPEC_CAPIEXT) 2> $(NULL) || $(NULLCMD)
 	-$(Q) $(RMALL) rubyspec_temp
 
-check: main $(DOT_WAIT) test $(DOT_WAIT) test-tool $(DOT_WAIT) test-all $(DOT_WAIT) test-spec
+check: main $(DOT_WAIT) test $(DOT_WAIT) test-tool $(DOT_WAIT) test-all
 	$(ECHO) check succeeded
 	-$(Q) : : "run only on sh"; \
 	if [ x"$(GIT)" != x ] && $(CHDIR) "$(srcdir)" && \
@@ -795,17 +826,19 @@ $(HAVE_BASERUBY:no=)$(arch)-fake.rb: miniruby$(EXEEXT)
 
 # actually depending on other headers more.
 $(arch:noarch=ignore)-fake.rb: $(top_srcdir)/revision.h $(top_srcdir)/version.h $(srcdir)/version.c
-$(arch:noarch=ignore)-fake.rb: {$(VPATH)}id.h {$(VPATH)}vm_opts.h
+$(arch:noarch=ignore)-fake.rb: {$(VPATH)}id.h {$(VPATH)}vm_opts.h $(REVISION_H)
 
 $(arch:noarch=ignore)-fake.rb: $(srcdir)/template/fake.rb.in $(tooldir)/generic_erb.rb
 	$(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)"
+	    i=- srcdir="$(srcdir)" BASERUBY="$(BASERUBY)" \
+	    LIBPATHENV="$(LIBPATHENV)" PRELOADENV="$(PRELOADENV)" LIBRUBY_SO="$(LIBRUBY_SO)"
 
 noarch-fake.rb: # prerequisite of yes-fake
-	touch $@
+	$(Q) exit > $@
 
+# runner: BASERUBY, target: miniruby
 btest: $(TEST_RUNNABLE)-btest
 no-btest: PHONY
 yes-btest: yes-fake miniruby$(EXEEXT) PHONY
@@ -813,6 +846,7 @@ yes-btest: yes-fake miniruby$(EXEEXT) PHONY
 	$(Q)$(gnumake_recursive)$(exec) $(BOOTSTRAPRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(BTESTRUBY) $(RUN_OPTS)" $(OPTS) $(TESTOPTS) $(BTESTS)
 	$(ACTIONS_ENDGROUP)
 
+# runner: ruby, target: ruby
 btest-ruby: $(TEST_RUNNABLE)-btest-ruby
 no-btest-ruby: PHONY
 yes-btest-ruby: prog PHONY
@@ -820,6 +854,12 @@ yes-btest-ruby: prog PHONY
 	$(Q)$(gnumake_recursive)$(exec) $(RUNRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(PROGRAM) -I$(srcdir)/lib $(RUN_OPTS)" $(OPTS) $(TESTOPTS) $(BTESTS)
 	$(ACTIONS_ENDGROUP)
 
+# runner: BASERUBY, target: ruby
+btest-bruby: prog PHONY
+	$(ACTIONS_GROUP)
+	$(Q)$(gnumake_recursive)$(exec) $(BOOTSTRAPRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(PROGRAM) -I$(srcdir)/lib $(RUN_OPTS)" $(OPTS) $(TESTOPTS) $(BTESTS)
+	$(ACTIONS_ENDGROUP)
+
 rtest: yes-fake miniruby$(EXEEXT) PHONY
 	$(ACTIONS_GROUP)
 	$(Q)$(exec) $(BOOTSTRAPRUBY) "$(srcdir)/bootstraptest/runner.rb" --ruby="$(BTESTRUBY) $(RUN_OPTS)" --sets=ractor -v
@@ -850,7 +890,7 @@ no-test-testframework: PHONY
 test-tool: $(TEST_RUNNABLE)-test-tool
 yes-test-tool: prog PHONY
 	$(ACTIONS_GROUP)
-	$(gnumake_recursive)$(Q)$(exec) $(RUNRUBY) "$(TOOL_TESTSDIR)/runner.rb" --ruby="$(RUNRUBY)" $(TESTOPTS)
+	$(gnumake_recursive)$(Q)$(exec) $(RUNRUBY) "$(TOOL_TESTSDIR)/runner.rb" --ruby="$(RUNRUBY)" $(TESTOPTS) $(TESTS)
 	$(ACTIONS_ENDGROUP)
 no-test-tool: PHONY
 
@@ -858,16 +898,28 @@ test-sample: test-basic # backward compatibility for mswin-build
 test-short: btest-ruby $(DOT_WAIT) test-knownbug $(DOT_WAIT) test-basic
 test: test-short
 
+# Separate to skip updating encs and exts by `make -o test-precheck`
+# for GNU make.
+test-precheck: $(ENCSTATIC:static=lib)encs $(RUBYSPEC_CAPIEXT_BUILD) exts PHONY $(DOT_WAIT)
+yes-test-all-precheck: programs $(DOT_WAIT) test-precheck
+
+PRECHECK_TEST_ALL = yes-test-all-precheck
+
 # $ 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
+yes-test-all: $(PRECHECK_TEST_ALL)
 	$(ACTIONS_GROUP)
-	$(gnumake_recursive)$(Q)$(exec) $(RUNRUBY) "$(TESTSDIR)/runner.rb" --ruby="$(RUNRUBY)" $(TEST_EXCLUDES) $(TESTOPTS) $(TESTS)
+	$(gnumake_recursive)$(Q)$(exec) $(RUNRUBY) -r$(tooldir)/lib/_tmpdir \
+	"$(TESTSDIR)/runner.rb" --ruby="$(RUNRUBY)" \
+	$(TEST_EXCLUDES) $(TESTOPTS) $(TESTS)
 	$(ACTIONS_ENDGROUP)
 TESTS_BUILD = mkmf
 no-test-all: PHONY
-	$(gnumake_recursive)$(MINIRUBY) -I"$(srcdir)/lib" "$(TESTSDIR)/runner.rb" $(TESTOPTS) $(TESTS_BUILD)
+	$(ACTIONS_GROUP)
+	$(gnumake_recursive)$(MINIRUBY) -I"$(srcdir)/lib" -r$(tooldir)/lib/_tmpdir \
+	"$(TESTSDIR)/runner.rb" $(TESTOPTS) $(TESTS_BUILD)
+	$(ACTIONS_ENDGROUP)
 
 test-almost: test-all
 yes-test-almost: yes-test-all
@@ -885,7 +937,7 @@ extconf: $(PREP)
 rbconfig.rb: $(RBCONFIG)
 
 $(HAVE_BASERUBY:no=)$(RBCONFIG)$(HAVE_BASERUBY:no=): $(PREP)
-$(RBCONFIG): $(tooldir)/mkconfig.rb config.status $(srcdir)/version.h
+$(RBCONFIG): $(tooldir)/mkconfig.rb config.status $(srcdir)/version.h $(srcdir)/common.mk
 	$(Q)$(BOOTSTRAPRUBY) -n \
 	-e 'BEGIN{version=ARGV.shift;mis=ARGV.dup}' \
 	-e 'END{abort "UNICODE version mismatch: #{mis}" unless mis.empty?}' \
@@ -903,21 +955,32 @@ $(RBCONFIG): $(tooldir)/mkconfig.rb config.status $(srcdir)/version.h
 test-rubyspec: test-spec
 yes-test-rubyspec: yes-test-spec
 
-test-spec-precheck: programs
+yes-test-spec-precheck: yes-test-all-precheck yes-fake
 
 test-spec: $(TEST_RUNNABLE)-test-spec
-yes-test-spec: test-spec-precheck
+yes-test-spec: yes-test-spec-precheck
 	$(ACTIONS_GROUP)
 	$(gnumake_recursive)$(Q) \
-	$(RUNRUBY) -r./$(arch)-fake $(srcdir)/spec/mspec/bin/mspec run -B $(srcdir)/spec/default.mspec $(MSPECOPT) $(SPECOPTS)
+	$(RUNRUBY) -r./$(arch)-fake -r$(tooldir)/lib/_tmpdir \
+		$(srcdir)/spec/mspec/bin/mspec run -B $(srcdir)/spec/default.mspec $(MSPECOPT) $(SPECOPTS)
 	$(ACTIONS_ENDGROUP)
 no-test-spec:
 
+check: $(DOT_WAIT) test-spec
+
 RUNNABLE = $(LIBRUBY_RELATIVE:no=un)-runnable
-runnable: $(RUNNABLE) prog $(tooldir)/mkrunnable.rb PHONY
+runnable: $(RUNNABLE)
+runnable-golf: golf
+runnable $(enable_shared:yes=runnable-golf): prog $(tooldir)/mkrunnable.rb PHONY
 	$(Q) $(MINIRUBY) $(tooldir)/mkrunnable.rb -v $(EXTOUT)
 yes-runnable: PHONY
 
+hello: $(TEST_RUNNABLE)-hello
+yes-hello: runnable-golf
+	./$(enable_shared:yes=bin/)$(GORUBY) -veh
+no-hello: runnable-golf
+	$(ECHO) Run ./$(enable_shared:yes=bin/)$(GORUBY) -veh
+
 encs: enc trans
 libencs: libenc libtrans
 encs enc trans libencs libenc libtrans: $(SHOWFLAGS) $(ENC_MK) $(LIBRUBY) $(PREP) PHONY
@@ -942,8 +1005,11 @@ $(ENC_MK): $(srcdir)/enc/make_encmake.rb $(srcdir)/enc/Makefile.in $(srcdir)/enc
 .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: clean-srcs clean-srcs-local clean-srcs-ext
 .PHONY: distclean distclean-ext distclean-local distclean-enc distclean-golf distclean-extout
+.PHONY: distclean-srcs distclean-srcs-local distclean-srcs-ext
 .PHONY: realclean realclean-ext realclean-local realclean-enc realclean-golf realclean-extout
+.PHONY: realclean-srcs realclean-srcs-local realclean-srcs-ext
 .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
@@ -951,23 +1017,19 @@ $(ENC_MK): $(srcdir)/enc/make_encmake.rb $(srcdir)/enc/Makefile.in $(srcdir)/enc
 
 PHONY:
 
-{$(VPATH)}parse.c: {$(VPATH)}parse.y $(tooldir)/ytab.sed {$(VPATH)}id.h
+{$(VPATH)}parse.c: {$(VPATH)}parse.y {$(VPATH)}id.h
 {$(VPATH)}parse.h: {$(VPATH)}parse.c
 
 {$(srcdir)}.y.c:
 	$(ECHO) generating $@
-	$(Q)$(BASERUBY) $(tooldir)/id2token.rb $(SRC_FILE) > parse.tmp.y
-	$(Q)$(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
+	$(Q)$(BASERUBY) $(tooldir)/id2token.rb $(SRC_FILE) | \
+	$(LRAMA) $(YFLAGS) -o$@ -H$*.h - parse.y
 
 $(PLATFORM_D):
 	$(Q) $(MAKEDIRS) $(PLATFORM_DIR) $(@D)
 	@$(NULLCMD) > $@
 
+exe/$(PROGRAM): $(TIMESTAMPDIR)/$(arch)/.time
 exe/$(PROGRAM): ruby-runner.c ruby-runner.h exe/.time $(PREP) {$(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) $(LIBS)
@@ -980,6 +1042,8 @@ exe/$(PROGRAM): ruby-runner.c ruby-runner.h exe/.time $(PREP) {$(VPATH)}config.h
 	    -e '  File.symlink(prog, dest)' \
 	    -e 'end' \
 	$(@F) $(@D) $(RUBY_INSTALL_NAME)$(EXEEXT)
+	$(Q) $(BOOTSTRAPRUBY) -r$(srcdir)/lib/fileutils \
+	    -e 'FileUtils::Verbose.ln_sr(*ARGV, force: true)' rbconfig.rb $(EXTOUT)/$(arch)
 
 exe/.time:
 	$(Q) $(MAKEDIRS) $(@D)
@@ -1047,7 +1111,7 @@ parse.$(OBJEXT): {$(VPATH)}parse.c
 miniprelude.$(OBJEXT): {$(VPATH)}miniprelude.c
 
 # dependencies for optional sources.
-compile.$(OBJEXT): {$(VPATH)}opt_sc.inc {$(VPATH)}optunifs.inc
+compile.$(OBJEXT): {$(VPATH)}optunifs.inc
 
 win32/win32.$(OBJEXT): {$(VPATH)}win32/win32.c {$(VPATH)}win32/file.h \
   {$(VPATH)}dln.h {$(VPATH)}dln_find.c {$(VPATH)}encindex.h \
@@ -1074,7 +1138,6 @@ 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)
@@ -1082,11 +1145,11 @@ $(srcs_vpath)insns_info.inc: $(tooldir)/ruby_vm/views/insns_info.inc.erb $(inc_c
   $(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
+  $(tooldir)/ruby_vm/views/_zjit_helpers.erb $(tooldir)/ruby_vm/views/_insn_leaf_info.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_attr.inc: $(tooldir)/ruby_vm/views/mjit_compile_attr.inc.erb
+  $(tooldir)/ruby_vm/views/_insn_entry.erb $(tooldir)/ruby_vm/views/_trace_instruction.erb \
+  $(tooldir)/ruby_vm/views/_zjit_instruction.erb
 
 BUILTIN_RB_SRCS = \
 		$(srcdir)/ast.rb \
@@ -1095,21 +1158,24 @@ BUILTIN_RB_SRCS = \
 		$(srcdir)/numeric.rb \
 		$(srcdir)/io.rb \
 		$(srcdir)/marshal.rb \
-		$(srcdir)/mjit.rb \
-		$(srcdir)/mjit_c.rb \
-		$(srcdir)/mjit_compiler.rb \
 		$(srcdir)/pack.rb \
 		$(srcdir)/trace_point.rb \
 		$(srcdir)/warning.rb \
 		$(srcdir)/array.rb \
+		$(srcdir)/hash.rb \
 		$(srcdir)/kernel.rb \
+		$(srcdir)/pathname_builtin.rb \
 		$(srcdir)/ractor.rb \
+		$(srcdir)/symbol.rb \
 		$(srcdir)/timev.rb \
 		$(srcdir)/thread_sync.rb \
 		$(srcdir)/nilclass.rb \
 		$(srcdir)/prelude.rb \
 		$(srcdir)/gem_prelude.rb \
+		$(srcdir)/jit_hook.rb \
+		$(srcdir)/jit_undef.rb \
 		$(srcdir)/yjit.rb \
+		$(srcdir)/zjit.rb \
 		$(empty)
 BUILTIN_RB_INCS = $(BUILTIN_RB_SRCS:.rb=.rbinc)
 
@@ -1119,9 +1185,16 @@ common-srcs: $(srcs_vpath)parse.c $(srcs_vpath)lex.c $(srcs_vpath)enc/trans/newl
 
 missing-srcs: $(srcdir)/missing/des_tables.c
 
-srcs: common-srcs missing-srcs srcs-enc
+srcs: common-srcs missing-srcs srcs-enc srcs-doc
+
+RIPPER_SRCS = $(srcdir)/ext/ripper/ripper.c \
+	      $(srcdir)/ext/ripper/ripper_init.c \
+	      $(srcdir)/ext/ripper/eventids1.h \
+	      $(srcdir)/ext/ripper/eventids1.c \
+	      $(srcdir)/ext/ripper/eventids2table.c \
+	      # RIPPER_SRCS
 
-EXT_SRCS = $(srcdir)/ext/ripper/ripper.c \
+EXT_SRCS = ripper_srcs \
 	   $(srcdir)/ext/rbconfig/sizeof/sizes.c \
 	   $(srcdir)/ext/rbconfig/sizeof/limits.c \
 	   $(srcdir)/ext/socket/constdefs.c \
@@ -1132,7 +1205,7 @@ srcs-ext: $(EXT_SRCS)
 realclean-srcs-ext::
 	$(Q)$(RM) $(EXT_SRCS)
 
-EXTRA_SRCS = $(srcdir)/ext/json/parser/parser.c \
+EXTRA_SRCS = \
 	     $(srcdir)/ext/date/zonetab.h \
 	     $(empty)
 
@@ -1148,7 +1221,7 @@ srcs-enc: $(ENC_MK)
 	$(ECHO) making srcs under enc
 	$(Q) $(MAKE) $(MAKE_ENC) srcs
 
-all-incs: incs {$(VPATH)}encdb.h {$(VPATH)}transdb.h
+all-incs: incs {$(VPATH)}encdb.h {$(VPATH)}transdb.h {$(VPATH)}probes.h
 incs: $(INSNS) {$(VPATH)}node_name.inc {$(VPATH)}known_errors.inc \
       {$(VPATH)}vm_call_iseq_optimized.inc $(srcdir)/revision.h \
       $(REVISION_H) \
@@ -1167,9 +1240,9 @@ id.c: $(tooldir)/generic_erb.rb $(srcdir)/template/id.c.tmpl $(srcdir)/defs/id.d
 	$(Q) $(BASERUBY) $(tooldir)/generic_erb.rb --output=$@ \
 		$(srcdir)/template/id.c.tmpl
 
-node_name.inc: $(tooldir)/node_name.rb $(srcdir)/node.h
+node_name.inc: $(tooldir)/node_name.rb $(srcdir)/rubyparser.h
 	$(ECHO) generating $@
-	$(Q) $(BASERUBY) -n $(tooldir)/node_name.rb < $(srcdir)/node.h > $@
+	$(Q) $(BASERUBY) -n $(tooldir)/node_name.rb < $(srcdir)/rubyparser.h > $@
 
 encdb.h: $(RBCONFIG) $(tooldir)/generic_erb.rb $(srcdir)/template/encdb.h.tmpl
 	$(ECHO) generating $@
@@ -1194,10 +1267,7 @@ $(MINIPRELUDE_C): $(COMPILE_PRELUDE) $(BUILTIN_RB_SRCS)
 	$(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 $@ \
-		$(srcdir)/template/prelude.c.tmpl golf_prelude.rb
+golf_prelude.rbbin: {$(srcdir)}golf_prelude.rb $(tooldir)/mk_rbbin.rb $(PREP)
 
 MAINCPPFLAGS = $(ENABLE_DEBUG_ENV:yes=-DRUBY_DEBUG_ENV=1)
 
@@ -1215,15 +1285,22 @@ probes.h: {$(VPATH)}probes.$(DTRACE_EXT)
 prereq: incs srcs preludes PHONY
 
 preludes: {$(VPATH)}miniprelude.c
-preludes: {$(srcdir)}golf_prelude.c
+
+{$(srcdir)}.rb.rbbin:
+	$(ECHO) making $@
+	$(Q) $(MINIRUBY) $(tooldir)/mk_rbbin.rb $(SRC_FILE) > $(OS_DEST_FILE)
 
 {$(srcdir)}.rb.rbinc:
 	$(ECHO) making $@
-	$(Q) $(BASERUBY) $(tooldir)/mk_builtin_loader.rb $<
+	$(Q) $(BASERUBY) $(tooldir)/mk_builtin_loader.rb $(SRC_FILE)
 
-builtin_binary.inc: $(PREP) $(BUILTIN_RB_SRCS) $(srcdir)/template/builtin_binary.inc.tmpl
+$(BUILTIN_BINARY:yes=built)in_binary.rbbin: $(PREP) $(BUILTIN_RB_SRCS) $(srcdir)/template/builtin_binary.rbbin.tmpl
 	$(Q) $(MINIRUBY) $(tooldir)/generic_erb.rb -o $@ \
-		$(srcdir)/template/builtin_binary.inc.tmpl -- --cross=$(CROSS_COMPILING)
+		$(srcdir)/template/builtin_binary.rbbin.tmpl
+	-$(Q) sha256sum $@ 2> $(NULL) || $(NULLCMD)
+
+$(BUILTIN_BINARY:no=builtin)_binary.rbbin:
+	$(Q) echo> $@ // empty $(@F)
 
 $(BUILTIN_RB_INCS): $(top_srcdir)/tool/mk_builtin_loader.rb
 
@@ -1232,20 +1309,28 @@ $(srcdir)/revision.h$(no_baseruby:no=~disabled~): $(REVISION_H)
 $(REVISION_H)$(no_baseruby:no=~disabled~):
 	$(Q) $(BASERUBY) $(tooldir)/file2lastrev.rb -q --revision.h --srcdir="$(srcdir)" --output=revision.h --timestamp=$@
 $(REVISION_H)$(yes_baseruby:yes=~disabled~):
-	$(Q) touch $@
+	$(Q) exit > $@
+
+# uncommon.mk: $(REVISION_H)
+# $(MKFILES): $(REVISION_H)
 
-$(srcdir)/ext/ripper/ripper.c: $(srcdir)/ext/ripper/tools/preproc.rb $(srcdir)/parse.y $(srcdir)/defs/id.def $(srcdir)/ext/ripper/depend
+# $(common_mk_includes) is set by config.status or GNUmakefile
+common_mk__$(gnumake:yes=artifact)_ = uncommon.mk
+common_mk_$(gnumake)_artifact_ = $(MKFILES)
+$(common_mk__artifact_): $(srcdir)/common.mk $(common_mk_includes)
+
+ripper_srcs: $(RIPPER_SRCS)
+
+$(RIPPER_SRCS): $(srcdir)/parse.y $(srcdir)/defs/id.def
+$(RIPPER_SRCS): $(srcdir)/ext/ripper/depend $(srcdir)/ext/ripper/extconf.rb
+$(RIPPER_SRCS): $(srcdir)/ext/ripper/tools/preproc.rb $(srcdir)/ext/ripper/tools/dsl.rb
+$(RIPPER_SRCS): $(srcdir)/ext/ripper/ripper_init.c.tmpl $(srcdir)/ext/ripper/eventids2.c
 	$(ECHO) generating $@
 	$(Q) $(CHDIR) $(@D) && \
-	sed -e "s/{\$$([^(){}]*)[^{}]*}//g" -e /AUTOGENERATED/q depend | \
+	$(CAT_DEPEND) depend | \
 	$(exec) $(MAKE) -f - $(mflags) \
-		Q=$(Q) ECHO=$(ECHO) RM="$(RM1)" BISON=$(YACC) top_srcdir=../.. srcdir=. VPATH=../.. \
-		RUBY="$(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)"
+		Q=$(Q) ECHO=$(ECHO) RM="$(RM1)" top_srcdir=../.. srcdir=. VPATH=../.. \
+		RUBY="$(BASERUBY)" BASERUBY="$(BASERUBY)" PATH_SEPARATOR="$(PATH_SEPARATOR)" LANG=C
 
 $(srcdir)/ext/date/zonetab.h: $(srcdir)/ext/date/zonetab.list $(srcdir)/ext/date/prereq.mk
 	$(ECHO) generating $@
@@ -1256,7 +1341,7 @@ $(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 | \
+	$(CAT_DEPEND) depend | \
 	$(exec) $(MAKE) -f - $(mflags) \
 		Q=$(Q) ECHO=$(ECHO) top_srcdir=../../.. srcdir=. VPATH=../../.. RUBY="$(BASERUBY)" $(@F)
 
@@ -1264,19 +1349,19 @@ $(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 | \
+	$(CAT_DEPEND) depend | \
 	$(exec) $(MAKE) -f - $(mflags) \
 		Q=$(Q) ECHO=$(ECHO) top_srcdir=../../.. srcdir=. VPATH=../../.. RUBY="$(BASERUBY)" $(@F)
 
-$(srcdir)/ext/socket/constdefs.c: $(srcdir)/ext/socket/depend
+$(srcdir)/ext/socket/constdefs.c: $(srcdir)/ext/socket/depend $(srcdir)/ext/socket/mkconstants.rb
 	$(Q) $(CHDIR) $(@D) && \
-	sed /AUTOGENERATED/q depend | \
+	$(CAT_DEPEND) 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 | \
+	$(CAT_DEPEND) depend | \
 	$(exec) $(MAKE) -f - $(mflags) \
 		Q=$(Q) ECHO=$(ECHO) top_srcdir=../.. srcdir=. VPATH=../.. RUBY="$(BASERUBY)"
 
@@ -1288,8 +1373,8 @@ run: yes-fake miniruby$(EXEEXT) PHONY
 runruby: $(PROGRAM) PHONY
 	RUBY_ON_BUG='gdb -x $(srcdir)/.gdbinit -p' $(RUNRUBY) $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
 
-runirb: $(PROGRAM) PHONY
-	RUBY_ON_BUG='gdb -x $(srcdir)/.gdbinit -p' $(RUNRUBY) $(RUNOPT0) -r irb -e 'IRB.start("make runirb")' $(RUNOPT)
+runirb: $(PROGRAM) update-default-gemspecs
+	RUBY_ON_BUG='gdb -x $(srcdir)/.gdbinit -p' $(RUNRUBY) $(RUNOPT0) -rrubygems -r irb -e 'IRB.start("make runirb")' $(RUNOPT)
 
 parse: yes-fake miniruby$(EXEEXT) PHONY
 	$(BTESTRUBY) --dump=parsetree_with_comment,insns $(TESTRUN_SCRIPT)
@@ -1330,9 +1415,10 @@ run.gdb:
 	echo '  quit'                         >> run.gdb
 	echo end                              >> run.gdb
 
+GDB = gdb
 
 gdb: miniruby$(EXEEXT) run.gdb PHONY
-	gdb -x run.gdb --quiet --args $(MINIRUBY) $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
+	$(GDB) -x run.gdb --quiet --args $(MINIRUBY) $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
 
 gdb-ruby: $(PROGRAM) run.gdb PHONY
 	$(Q) $(RUNRUBY_COMMAND) $(RUNRUBY_DEBUGGER) -- $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
@@ -1355,7 +1441,7 @@ dist:
 
 up:: update-remote
 
-up::
+up$(DOT_WAIT)::
 	-$(Q)$(MAKE) $(mflags) Q=$(Q) REVISION_FORCE=PHONY ALWAYS_UPDATE_UNICODE= after-update
 
 yes::
@@ -1366,6 +1452,10 @@ after-update:: $(REVISION_H)
 after-update:: extract-extlibs
 after-update:: extract-gems
 
+update-src::
+	$(Q) $(RM) $(REVISION_H) revision.h "$(srcdir)/$(REVISION_H)" "$(srcdir)/revision.h"
+	$(Q) exit > "$(srcdir)/revision.h"
+
 update-remote:: update-src update-download
 update-download:: $(ALWAYS_UPDATE_UNICODE:yes=update-unicode)
 update-download:: update-gems
@@ -1378,15 +1468,26 @@ update-config_files: PHONY
 	$(Q) $(BASERUBY) -C "$(srcdir)" tool/downloader.rb -d tool --cache-dir=$(CACHE_DIR) -e gnu \
 	    config.guess config.sub
 
+update-coverage: main PHONY
+	$(XRUBY) -C "$(srcdir)" bin/gem install --no-document \
+		--install-dir .bundle --conservative "simplecov"
+
 refresh-gems: update-bundled_gems prepare-gems
+# can't recall exactly, but `make` somewhere (not GNU or nmake)
+# couldn't handle spaces in replacement strings; i.e.,
+# `$(HAVE_BASERUBY:yes=word word ...)` didn't work.
 prepare-gems: $(HAVE_BASERUBY:yes=update-gems) $(HAVE_BASERUBY:yes=extract-gems)
+extract-gems: $(HAVE_BASERUBY:yes=update-gems) $(HAVE_BASERUBY:yes=outdate-bundled-gems)
+update-gems: $(HAVE_BASERUBY:yes=outdate-bundled-gems)
 
-update-gems$(gnumake:yes=-sequential): PHONY
+split_option = -F"\s+|$(HASH_SIGN).*"
+
+update-gems$(sequential): PHONY
 	$(ECHO) Downloading bundled gem files...
 	$(Q) $(BASERUBY) -C "$(srcdir)" \
-	    -I./tool -rdownloader -answ \
+	    -I./tool -rdownloader $(split_option) -answ \
 	    -e 'gem, ver = *$$F' \
-	    -e 'next if !ver or /^#/=~gem' \
+	    -e 'next if !ver' \
 	    -e 'old = Dir.glob("gems/#{gem}-*.gem")' \
 	    -e 'gem = "#{gem}-#{ver}.gem"' \
 	    -e 'Downloader::RubyGems.download(gem, "gems", nil) and' \
@@ -1395,129 +1496,173 @@ update-gems$(gnumake:yes=-sequential): PHONY
 	    -e 'FileUtils.rm_rf(old.map{'"|n|"'n.chomp(".gem")})' \
 	    gems/bundled_gems
 
-extract-gems$(gnumake:yes=-sequential): PHONY
+extract-gems$(sequential): PHONY
 	$(ECHO) Extracting bundled gem files...
 	$(Q) $(BASERUBY) -C "$(srcdir)" \
-	    -Itool/lib -rfileutils -rbundled_gem -answ \
+	    -Itool/lib -rfileutils -rbundled_gem $(split_option) -answ \
 	    -e 'BEGIN {d = ".bundle/gems"}' \
 	    -e 'gem, ver, _, rev = *$$F' \
-	    -e 'next if !ver or /^#/=~gem' \
+	    -e 'next if !ver' \
 	    -e 'g = "#{gem}-#{ver}"' \
-	    -e 'if File.directory?("#{d}/#{g}")' \
-	    -e 'elsif rev and File.exist?(gs = "gems/src/#{gem}/#{gem}.gemspec")' \
-	    -e   'BundledGem.copy(gs, ".bundle")' \
-	    -e 'else' \
+	    -e 'unless File.directory?("#{d}/#{g}")' \
+	    -e   'if rev and File.exist?(gs = "gems/src/#{gem}/#{gem}.gemspec")' \
+	    -e     'BundledGem.build(gs, ver, "gems")' \
+	    -e   'end' \
 	    -e   'BundledGem.unpack("gems/#{g}.gem", ".bundle")' \
 	    -e 'end' \
 	    gems/bundled_gems
 
+extract-gems$(sequential): $(HAVE_GIT:yes=clone-bundled-gems-src)
+
+flush-gems: outdate-bundled-gems
+outdate-bundled-gems: PHONY
+	$(Q) $(BASERUBY) $(tooldir)/$@.rb --make="$(MAKE)" --mflags="$(MFLAGS)" \
+	--ruby-platform=$(arch) --ruby-version=$(ruby_version) \
+	"$(srcdir)"
+
 update-bundled_gems: PHONY
 	$(Q) $(RUNRUBY) -rrubygems \
 	     $(tooldir)/update-bundled_gems.rb \
 	     "$(srcdir)/gems/bundled_gems" | \
 	$(IFCHANGE) "$(srcdir)/gems/bundled_gems" -
-	$(GIT) -C "$(srcdir)" diff --no-ext-diff --ignore-submodules --exit-code || \
-	$(GIT) -C "$(srcdir)" commit -m "Update bundled_gems" gems/bundled_gems
+	$(GIT_IN_SRC) diff --no-ext-diff --ignore-submodules --exit-code || \
+	$(GIT_IN_SRC) commit -m "Update bundled_gems" gems/bundled_gems
 
-PRECHECK_BUNDLED_GEMS = test-bundled-gems-precheck
+PRECHECK_BUNDLED_GEMS = yes
 test-bundled-gems-precheck: $(TEST_RUNNABLE)-test-bundled-gems-precheck
-yes-test-bundled-gems-precheck: main
+yes-test-bundled-gems-precheck: $(PRECHECK_BUNDLED_GEMS:yes=main)
 no-test-bundled-gems-precheck:
 
+update-default-gemspecs: $(TEST_RUNNABLE)-update-default-gemspecs
+no-update-default-gemspecs:
+yes-update-default-gemspecs: $(PRECHECK_BUNDLED_GEMS:yes=main)
+	@$(MAKEDIRS) $(srcdir)/.bundle/specifications
+	@$(XRUBY) -W0 -C "$(srcdir)" -rrubygems \
+	    -e "destdir = ARGV.shift" \
+	    -e "ARGV.each do |basedir|" \
+	    -e   "Dir.glob(basedir+'/**/*.gemspec') do |g|" \
+	    -e     "dir, base = File.split(g)" \
+	    -e     "spec = Dir.chdir(dir) {Gem::Specification.load(base)} ||" \
+	    -e         "Gem::Specification.load(g)" \
+	    -e     "unless spec" \
+	    -e       "puts %[Ignoring #{g}]" \
+	    -e       "next" \
+	    -e     "end" \
+	    -e     "spec.files.clear" \
+	    -e     "spec.extensions.clear" \
+	    -e     "File.binwrite(File.join(destdir, spec.full_name+'.gemspec'), spec.to_ruby)" \
+	    -e   "end" \
+	    -e "end" \
+	    -- .bundle/specifications lib ext
+
+install-for-test-bundled-gems: $(TEST_RUNNABLE)-install-for-test-bundled-gems
+no-install-for-test-bundled-gems: no-update-default-gemspecs
+yes-install-for-test-bundled-gems: yes-update-default-gemspecs
+	$(XRUBY) -C "$(srcdir)" -r./tool/lib/gem_env.rb bin/gem \
+		install --no-document --conservative \
+		"hoe" "json-schema:5.1.0" "test-unit-rr" "simplecov" "simplecov-html" "simplecov-json" "rspec" "zeitwerk" \
+		"sinatra" "rack" "tilt" "mustermann" "base64" "compact_index" "rack-test" "logger" "kpeg" "tracer" "minitest-mock"
+
 test-bundled-gems-fetch: yes-test-bundled-gems-fetch
-yes-test-bundled-gems-fetch:
-	$(ACTIONS_GROUP)
-	$(Q) $(BASERUBY) -C $(srcdir)/gems ../tool/fetch-bundled_gems.rb src bundled_gems
-	$(ACTIONS_ENDGROUP)
+yes-test-bundled-gems-fetch: clone-bundled-gems-src
+clone-bundled-gems-src: PHONY
+	$(Q) $(BASERUBY) -C $(srcdir) tool/fetch-bundled_gems.rb BUNDLED_GEMS="$(BUNDLED_GEMS)" gems/src gems/bundled_gems
 no-test-bundled-gems-fetch:
 
-test-bundled-gems-prepare: $(PRECHECK_BUNDLED_GEMS) 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
+no-test-bundled-gems-prepare: no-test-bundled-gems-precheck no-test-bundled-gems-fetch
+Preparing-test-bundled-gems:
 	$(ACTIONS_GROUP)
-	$(XRUBY) -C "$(srcdir)" bin/gem install --no-document \
-		--install-dir .bundle --conservative "bundler" "minitest:~> 5" "test-unit" "rake" "hoe" "yard" "pry" "packnga" "rexml" "json-schema" "test-unit-rr"
+yes-test-bundled-gems-prepare: Preparing-test-bundled-gems $(DOT_WAIT)
 	$(ACTIONS_ENDGROUP)
+yes-test-bundled-gems-prepare: yes-test-bundled-gems-precheck $(DOT_WAIT)
+yes-test-bundled-gems-prepare: yes-install-for-test-bundled-gems $(DOT_WAIT)
+yes-test-bundled-gems-prepare: yes-test-bundled-gems-fetch $(DOT_WAIT)
+yes-test-bundled-gems-precheck: Preparing-test-bundled-gems
+yes-install-for-test-bundled-gems: Preparing-test-bundled-gems
+yes-test-bundled-gems-fetch: Preparing-test-bundled-gems
 
 PREPARE_BUNDLED_GEMS = test-bundled-gems-prepare
-test-bundled-gems: $(TEST_RUNNABLE)-test-bundled-gems
+test-bundled-gems: $(TEST_RUNNABLE)-test-bundled-gems $(DOT_WAIT) $(TEST_RUNNABLE)-test-bundled-gems-spec
 yes-test-bundled-gems: test-bundled-gems-run
 no-test-bundled-gems:
 
+bundled_gems_spec-run: install-for-test-bundled-gems
+	$(XRUBY) -C $(srcdir) .bundle/bin/rspec spec/bundled_gems_spec.rb
+
 # Override this to allow failure of specific gems on CI
 # TEST_BUNDLED_GEMS_ALLOW_FAILURES =
 
 BUNDLED_GEMS =
-test-bundled-gems-run: $(PREPARE_BUNDLED_GEMS)
+test-bundled-gems-run: $(TEST_RUNNABLE)-test-bundled-gems-run
+yes-test-bundled-gems-run: $(PREPARE_BUNDLED_GEMS)
 	$(gnumake_recursive)$(Q) $(XRUBY) $(tooldir)/test-bundled-gems.rb $(BUNDLED_GEMS)
+no-test-bundled-gems-run: $(PREPARE_BUNDLED_GEMS)
 
-test-syntax-suggest-precheck: $(TEST_RUNNABLE)-test-syntax-suggest-precheck
-no-test-syntax-suggest-precheck:
-yes-test-syntax-suggest-precheck: main
-
-no-test-syntax-suggest-prepare: no-test-syntax-suggest-precheck
-yes-test-syntax-suggest-prepare: yes-test-syntax-suggest-precheck
+test-bundled-gems-spec: $(TEST_RUNNABLE)-test-bundled-gems-spec
+yes-test-bundled-gems-spec: yes-test-spec-precheck $(PREPARE_BUNDLED_GEMS)
 	$(ACTIONS_GROUP)
-	$(XRUBY) -C "$(srcdir)" bin/gem install --no-document \
-		--install-dir .bundle --conservative "bundler" "rake" "rspec:~> 3" #"ruby-prof"
+	$(gnumake_recursive)$(Q) \
+	$(RUNRUBY) -r./$(arch)-fake -r$(tooldir)/lib/_tmpdir \
+		$(srcdir)/spec/mspec/bin/mspec run --env BUNDLED_GEMS=$(BUNDLED_GEMS) -B $(srcdir)/spec/bundled_gems.mspec \
+		$(MSPECOPT) $(SPECOPTS)
 	$(ACTIONS_ENDGROUP)
+no-test-bundled-gems-spec:
+
+
+test-syntax-suggest:
 
-RSPECOPTS =
-SYNTAX_SUGGEST_SPECS =
-test-syntax-suggest: $(TEST_RUNNABLE)-test-syntax-suggest
-yes-test-syntax-suggest: yes-test-syntax-suggest-prepare
-	$(XRUBY) -C $(srcdir) -Ispec/syntax_suggest .bundle/bin/rspec \
-		--require spec_helper $(RSPECOPTS) spec/syntax_suggest/$(SYNTAX_SUGGEST_SPECS)
-no-test-syntax-suggest:
+check: $(DOT_WAIT) $(PREPARE_SYNTAX_SUGGEST) test-syntax-suggest
+
+RAKER = $(XRUBY) -I$(srcdir)/gems/lib$(PATH_SEPARATOR)$(srcdir)/.bundle/lib \
+	-rrubygems $(srcdir)/.bundle/bin/rake
+rake:
+	$(RAKER) $(RAKE_OPTS) $(RAKE)
 
 test-bundler-precheck: $(TEST_RUNNABLE)-test-bundler-precheck
 no-test-bundler-precheck:
 yes-test-bundler-precheck: main $(arch)-fake.rb
+yes-test-bundler-parallel-precheck: yes-test-bundler-precheck
 
+test-bundler-prepare: $(TEST_RUNNABLE)-test-bundler-prepare
 no-test-bundler-prepare: no-test-bundler-precheck
 yes-test-bundler-prepare: yes-test-bundler-precheck
 	$(ACTIONS_GROUP)
-	$(XRUBY) -C $(srcdir) -Ilib \
-		-e 'ENV["GEM_HOME"] = File.expand_path(".bundle")' \
-		-e 'ENV["BUNDLE_APP_CONFIG"] = File.expand_path(".bundle")' \
-		-e 'ENV["BUNDLE_PATH__SYSTEM"] = "true"' \
-		-e 'ENV["BUNDLE_WITHOUT"] = "lint doc"' \
-		-e 'load "spec/bundler/support/bundle.rb"' -- install --gemfile=tool/bundler/dev_gems.rb
+	$(XRUBY) -C $(srcdir) -Ilib -r./tool/lib/bundle_env.rb \
+		spec/bin/bundle install --quiet --gemfile=tool/bundler/dev_gems.rb
 	$(ACTIONS_ENDGROUP)
 
-RSPECOPTS =
+RSPECOPTS = -r formatter_overrides
 BUNDLER_SPECS =
+PREPARE_BUNDLER = $(TEST_RUNNABLE)-test-bundler-prepare
 test-bundler: $(TEST_RUNNABLE)-test-bundler
-yes-test-bundler: yes-test-bundler-prepare
+yes-test-bundler: $(PREPARE_BUNDLER)
 	$(gnumake_recursive)$(XRUBY) \
 		-r./$(arch)-fake \
-		-e "exec(*ARGV)" -- \
-		$(XRUBY) -C $(srcdir) -Ispec/bundler .bundle/bin/rspec \
-		--require spec_helper $(RSPECOPTS) spec/bundler/$(BUNDLER_SPECS)
+		-C $(srcdir) -Ispec/bundler -Ispec/lib spec/bin/rspec \
+		-r 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
+yes-test-bundler-parallel: $(PREPARE_BUNDLER)
 	$(gnumake_recursive)$(XRUBY) \
 		-r./$(arch)-fake \
+		-I$(srcdir)/spec/bundler \
+		-e "ruby = ENV['RUBY']" \
 		-e "ARGV[-1] = File.expand_path(ARGV[-1])" \
-		-e "exec(*ARGV)" -- \
-		$(XRUBY) -I$(srcdir)/spec/bundler \
-		-e "ENV['PARALLEL_TESTS_EXECUTABLE'] = ARGV.shift" \
+		-e "ENV['RSPEC_EXECUTABLE'] = ruby + ARGV.shift" \
 		-e "load ARGV.shift" \
-		"$(XRUBY) -C $(srcdir) -Ispec/bundler .bundle/bin/rspec" \
-		$(srcdir)/.bundle/bin/parallel_rspec \
-		-o "--require spec_helper" \
+		" -C $(srcdir) -Ispec/bundler -Ispec/lib .bundle/bin/rspec -r spec_helper" \
+		$(srcdir)/spec/bin/parallel_rspec $(RSPECOPTS) \
 		$(PARALLELRSPECOPTS) $(srcdir)/spec/bundler/$(BUNDLER_SPECS)
 no-test-bundler-parallel:
 
 # The annocheck supports ELF format binaries compiled for any OS and for any
 # architecture. It is designed to be independent of the host OS and the
 # architecture. The test-annocheck.sh requires docker or podman.
-test-annocheck: $(PROGRAM)
-	$(tooldir)/test-annocheck.sh $(PROGRAM)
+test-annocheck: $(PROGRAM) $(LIBRUBY_SO)
+	$(tooldir)/test-annocheck.sh $(PROGRAM) $(LIBRUBY_SO)
 
 GEM = up
 sync-default-gems:
@@ -1530,7 +1675,7 @@ UNICODE_FILES = $(UNICODE_SRC_DATA_DIR)/UnicodeData.txt \
 		$(UNICODE_SRC_DATA_DIR)/SpecialCasing.txt \
 		$(empty)
 
-UNICODE_PROPERTY_FILES =  \
+UNICODE_PROPERTY_FILES = \
 		$(UNICODE_SRC_DATA_DIR)/Blocks.txt \
 		$(UNICODE_SRC_DATA_DIR)/DerivedAge.txt \
 		$(UNICODE_SRC_DATA_DIR)/DerivedCoreProperties.txt \
@@ -1540,7 +1685,7 @@ UNICODE_PROPERTY_FILES =  \
 		$(UNICODE_SRC_DATA_DIR)/Scripts.txt \
 		$(empty)
 
-UNICODE_AUXILIARY_FILES =  \
+UNICODE_AUXILIARY_FILES = \
 		$(UNICODE_SRC_DATA_DIR)/auxiliary/GraphemeBreakProperty.txt \
 		$(UNICODE_SRC_DATA_DIR)/auxiliary/GraphemeBreakTest.txt \
 		$(empty)
@@ -1581,34 +1726,50 @@ UNICODE_UCD_EMOJI_DOWNLOAD = \
 UNICODE_EMOJI_DOWNLOAD = \
 	$(UNICODE_DOWNLOADER) \
 	    -d $(UNICODE_SRC_EMOJI_DATA_DIR) \
-	    -p emoji/$(UNICODE_EMOJI_VERSION)
+	    -p $(UNICODE_VERSION)/emoji
 
-$(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_UCD_EMOJI_FILES): update-unicode-ucd-emoji-files
 update-unicode-ucd-emoji-files:
 	$(ECHO) Downloading Unicode UCD emoji $(UNICODE_EMOJI_VERSION) files...
 	$(Q) $(MAKEDIRS) "$(UNICODE_SRC_DATA_DIR)/emoji"
 	$(Q) $(UNICODE_UCD_EMOJI_DOWNLOAD) $(UNICODE_UCD_EMOJI_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)
 
-$(srcdir)/lib/unicode_normalize/$(ALWAYS_UPDATE_UNICODE:yes=tables.rb): \
-	$(UNICODE_SRC_DATA_DIR)/$(HAVE_BASERUBY:yes=.unicode-tables.time)
+$(UNICODE_FILES) $(UNICODE_PROPERTY_FILES):
+	$(ECHO) Downloading Unicode $(UNICODE_VERSION) data and property files...
+	$(Q) $(MAKEDIRS) "$(UNICODE_SRC_DATA_DIR)"
+	$(Q) $(UNICODE_DOWNLOAD) $@
+
+$(UNICODE_AUXILIARY_FILES):
+	$(ECHO) Downloading Unicode $(UNICODE_VERSION) auxiliary files...
+	$(Q) $(MAKEDIRS) "$(UNICODE_SRC_DATA_DIR)/auxiliary"
+	$(Q) $(UNICODE_AUXILIARY_DOWNLOAD) $@
+
+$(UNICODE_UCD_EMOJI_FILES):
+	$(ECHO) Downloading Unicode UCD emoji $(UNICODE_EMOJI_VERSION) files...
+	$(Q) $(MAKEDIRS) "$(UNICODE_SRC_DATA_DIR)/emoji"
+	$(Q) $(UNICODE_UCD_EMOJI_DOWNLOAD) $@
+
+$(UNICODE_EMOJI_FILES):
+	$(ECHO) Downloading Unicode emoji $(UNICODE_EMOJI_VERSION) files...
+	$(Q) $(MAKEDIRS) "$(UNICODE_SRC_EMOJI_DATA_DIR)"
+	$(Q) $(UNICODE_EMOJI_DOWNLOAD) $@
+
+$(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) \
@@ -1616,13 +1777,25 @@ $(UNICODE_SRC_DATA_DIR)/$(ALWAYS_UPDATE_UNICODE:yes=.unicode-tables.time): \
 
 touch-unicode-files:
 	$(MAKEDIRS) $(UNICODE_SRC_DATA_DIR)
-	touch $(UNICODE_SRC_DATA_DIR)/.unicode-tables.time $(UNICODE_DATA_HEADERS)
+	$(Q) $(TOUCH) $(UNICODE_SRC_DATA_DIR)/.unicode-tables.time $(UNICODE_DATA_HEADERS)
 
+UNICODE_TABLES_DATA_FILES = \
+	$(UNICODE_SRC_DATA_DIR)/UnicodeData.txt \
+	$(UNICODE_SRC_DATA_DIR)/CompositionExclusions.txt \
+	$(empty)
+
+UNICODE_TABLES_DEPENDENTS_1 = none$(ALWAYS_UPDATE_UNICODE)
+UNICODE_TABLES_DEPENDENTS = $(UNICODE_TABLES_DEPENDENTS_1:noneyes=force)
 UNICODE_TABLES_TIMESTAMP = yes
-$(UNICODE_SRC_DATA_DIR)/.unicode-tables.time: $(tooldir)/generic_erb.rb \
+$(UNICODE_SRC_DATA_DIR)/.unicode-tables.$(UNICODE_TABLES_DEPENDENTS:none=time):
+	$(Q) $(MAKEDIRS) $(@D)
+	$(Q) exit > $(@) || $(NULLCMD)
+$(UNICODE_SRC_DATA_DIR)/.unicode-tables.$(UNICODE_TABLES_DEPENDENTS:force=time): \
+		$(tooldir)/generic_erb.rb \
 		$(srcdir)/template/unicode_norm_gen.tmpl \
-		$(ALWAYS_UPDATE_UNICODE:yes=update-unicode)
-	$(Q) $(MAKE) $(@D)
+		$(UNICODE_TABLES_DATA_FILES) \
+	$(order_only) \
+		$(UNICODE_SRC_DATA_DIR)
 	$(Q) $(BASERUBY) $(tooldir)/generic_erb.rb \
 		-c $(UNICODE_TABLES_TIMESTAMP:yes=-t$@) \
 		-o $(srcdir)/lib/unicode_normalize/tables.rb \
@@ -1647,6 +1820,16 @@ $(UNICODE_HDR_DIR)/name2ctype.h:
 		$(UNICODE_SRC_DATA_DIR) $(UNICODE_SRC_EMOJI_DATA_DIR) > $@.new
 	$(MV) $@.new $@
 
+srcs-doc: $(srcdir)/doc/language/regexp/unicode_properties.rdoc
+$(srcdir)/doc/language/regexp/$(ALWAYS_UPDATE_UNICODE:yes=unicode_properties.rdoc): \
+	$(UNICODE_HDR_DIR)/name2ctype.h $(UNICODE_PROPERTY_FILES)
+
+$(srcdir)/doc/language/regexp/unicode_properties.rdoc:
+	$(Q) $(BOOTSTRAPRUBY) $(tooldir)/generic_erb.rb -c -o $@ \
+		$(srcdir)/template/unicode_properties.rdoc.tmpl \
+		$(UNICODE_SRC_DATA_DIR) $(UNICODE_HDR_DIR)/name2ctype.h || \
+	$(TOUCH) $@
+
 # the next non-comment line was:
 # $(UNICODE_HDR_DIR)/casefold.h: $(tooldir)/enc-case-folding.rb \
 # but was changed to make sure CI works on systems that don't have gperf
@@ -1678,6 +1861,9 @@ clean-gems:
 
 CLEAN_CACHE = clean-extlibs
 
+prepare-package: prereq after-update
+clean-cache: $(CLEAN_CACHE)
+
 info: info-program info-libruby_a info-libruby_so info-arch
 info-program: PHONY
 	@echo PROGRAM=$(PROGRAM)
@@ -1689,6 +1875,9 @@ info-arch: PHONY
 	@echo arch=$(arch)
 
 exam: check
+exam: $(DOT_WAIT) test-bundler-parallel
+exam: $(DOT_WAIT) bundled_gems_spec-run
+exam: $(DOT_WAIT) test-bundled-gems
 
 love: sudo-precheck up all test exam install
 	@echo love is all you need
@@ -1710,11 +1899,56 @@ update-man-date: PHONY
 ChangeLog:
 	$(ECHO) Generating $@
 	-$(Q) $(BASERUBY) -I"$(tooldir)/lib" -rvcs \
-	-e 'VCS.detect(ARGV[0]).export_changelog("@", nil, nil, ARGV[1])' \
+	-e 'VCS.detect(ARGV[0]).export_changelog(path: ARGV[1])' \
 	"$(srcdir)" $@
 
+# CAUTION: If using GNU make 3 which does not support `.WAIT`, this
+# recipe with multiple jobs makes build and `git reset` run
+# simultaneously, and will cause inconsistent results.  Run with `-j1`
+# or update GNU make.
+nightly: yesterday $(DOT_WAIT) install
+	$(NULLCMD)
+
+# Rewind to the last commit "yesterday".  "Yesterday" means here the
+# period where `RUBY_RELEASE_DATE` is the day before the date to be
+# generated now.  In short, the yesterday in JST-9 time zone.
+yesterday: rewindable
+
+rewindable:
+	$(GIT_IN_SRC) status --porcelain
+	$(GIT_IN_SRC) diff --quiet
+
 HELP_EXTRA_TASKS = ""
 
+gc/Makefile:
+	$(MAKEDIRS) $(@D)
+	$(MESSAGE_BEGIN) \
+	"all:" \
+	"	@echo You must specify MODULAR_GC with the GC to build" \
+	"	@exit 1" \
+	$(MESSAGE_END) > $@
+gc/distclean gc/realclean::
+	-$(Q) $(RM) gc/Makefile
+
+modular-gc-precheck:
+modular-gc: probes.h gc/Makefile
+	$(Q) $(RUNRUBY) $(srcdir)/ext/extmk.rb \
+		$(SCRIPT_ARGS) \
+		--make='$(MAKE)' --make-flags="V=$(V) MINIRUBY='$(MINIRUBY)'" \
+		--gnumake=$(gnumake) --extflags="$(EXTLDFLAGS)" \
+		--ext-build-dir=gc --command-output=gc/$(MODULAR_GC)/exts.mk -- \
+		configure gc/$(MODULAR_GC)
+	$(CHDIR) gc/$(MODULAR_GC) && $(exec) $(MAKE) TARGET_SO_DIR=./
+install-modular-gc: modular-gc modular-gc-precheck
+	$(Q) $(MAKEDIRS) $(modular_gc_dir)
+	$(CP) gc/$(MODULAR_GC)/librubygc.$(MODULAR_GC).$(DLEXT) $(modular_gc_dir)
+
+clean-modular-gc: gc/clean
+distclean-modular-gc: gc/distclean
+realclean-modular-gc: gc/realclean
+distclean-modular-gc realclean-modular-gc:
+	-$(Q) $(RMDIR) gc
+
 help: PHONY
 	$(MESSAGE_BEGIN) \
 	"                Makefile of Ruby" \
@@ -1731,13 +1965,16 @@ help: PHONY
 	"  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" \
+	"  runirb:                starts irb on built ruby (not installed ruby)" \
+	"  exam:                  equals make check test-bundler-parallel test-bundled-gems" \
+	"  check:                 equals make test test-tool test-all test-spec test-syntax-suggest" \
 	"  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-bundler-parallel: run the Bundler spec with parallel" \
-	"  test-bundled-gems:     run the test suite of bundled gems" \
+	"  test-syntax-suggest:   run the SyntaxSuggest spec" \
+	"  test-bundled-gems:     run the test suite of bundled gems [BUNDLED_GEMS=<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" \
@@ -1748,16487 +1985,16 @@ help: PHONY
 	"  install:               install all ruby distributions" \
 	"  install-nodoc:         install without rdoc" \
 	"  install-cross:         install cross compiling stuff" \
-	"  clean:                 clean for tarball" \
-	"  distclean:             clean for repository" \
+	"  clean:                 clean up to the state before build" \
+	"  distclean:             clean up to the state before configure" \
 	"  golf:                  build goruby for golfers" \
 	$(HELP_EXTRA_TASKS) \
 	"see DeveloperHowto for more detail: " \
-	"  https://bugs.ruby-lang.org/projects/ruby/wiki/DeveloperHowto" \
+	"  https://github.com/ruby/ruby/wiki/Developer-How-To" \
 	$(MESSAGE_END)
 
 $(CROSS_COMPILING:yes=)builtin.$(OBJEXT): {$(VPATH)}mini_builtin.c
 $(CROSS_COMPILING:yes=)builtin.$(OBJEXT): {$(VPATH)}miniprelude.c
 
-# AUTOGENERATED DEPENDENCIES START
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-addr2line.$(OBJEXT): {$(VPATH)}assert.h
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-addr2line.$(OBJEXT): {$(VPATH)}backward/2/attributes.h
-addr2line.$(OBJEXT): {$(VPATH)}backward/2/bool.h
-addr2line.$(OBJEXT): {$(VPATH)}backward/2/long_long.h
-addr2line.$(OBJEXT): {$(VPATH)}backward/2/stdalign.h
-addr2line.$(OBJEXT): {$(VPATH)}backward/2/stdarg.h
-addr2line.$(OBJEXT): {$(VPATH)}config.h
-addr2line.$(OBJEXT): {$(VPATH)}defines.h
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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
-addr2line.$(OBJEXT): {$(VPATH)}internal/attr/format.h
-addr2line.$(OBJEXT): {$(VPATH)}internal/attr/maybe_unused.h
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-addr2line.$(OBJEXT): {$(VPATH)}internal/xmalloc.h
-addr2line.$(OBJEXT): {$(VPATH)}missing.h
-array.$(OBJEXT): $(hdrdir)/ruby/ruby.h
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-array.$(OBJEXT): $(top_srcdir)/internal/bits.h
-array.$(OBJEXT): $(top_srcdir)/internal/class.h
-array.$(OBJEXT): $(top_srcdir)/internal/compar.h
-array.$(OBJEXT): $(top_srcdir)/internal/compilers.h
-array.$(OBJEXT): $(top_srcdir)/internal/enum.h
-array.$(OBJEXT): $(top_srcdir)/internal/fixnum.h
-array.$(OBJEXT): $(top_srcdir)/internal/gc.h
-array.$(OBJEXT): $(top_srcdir)/internal/hash.h
-array.$(OBJEXT): $(top_srcdir)/internal/numeric.h
-array.$(OBJEXT): $(top_srcdir)/internal/object.h
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-array.$(OBJEXT): $(top_srcdir)/internal/rational.h
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-array.$(OBJEXT): {$(VPATH)}debug_counter.h
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-yjit.$(OBJEXT): {$(VPATH)}thread_$(THREAD_MODEL).h
-yjit.$(OBJEXT): {$(VPATH)}thread_native.h
-yjit.$(OBJEXT): {$(VPATH)}vm_callinfo.h
-yjit.$(OBJEXT): {$(VPATH)}vm_core.h
-yjit.$(OBJEXT): {$(VPATH)}vm_debug.h
-yjit.$(OBJEXT): {$(VPATH)}vm_insnhelper.h
-yjit.$(OBJEXT): {$(VPATH)}vm_opts.h
-yjit.$(OBJEXT): {$(VPATH)}vm_sync.h
-yjit.$(OBJEXT): {$(VPATH)}yjit.c
-yjit.$(OBJEXT): {$(VPATH)}yjit.h
-yjit.$(OBJEXT): {$(VPATH)}yjit.rb
-yjit.$(OBJEXT): {$(VPATH)}yjit.rbinc
-# AUTOGENERATED DEPENDENCIES END
+!include $(srcdir)/prism/srcs.mk
+!include $(srcdir)/depend
diff --git a/compar.c b/compar.c
index 00e79b5767..142cb12a0c 100644
--- a/compar.c
+++ b/compar.c
@@ -50,7 +50,7 @@ VALUE
 rb_invcmp(VALUE x, VALUE y)
 {
     VALUE invcmp = rb_exec_recursive(invcmp_recursive, x, y);
-    if (invcmp == Qundef || NIL_P(invcmp)) {
+    if (NIL_OR_UNDEF_P(invcmp)) {
         return Qnil;
     }
     else {
@@ -95,10 +95,13 @@ cmpint(VALUE x, VALUE y)
 
 /*
  *  call-seq:
- *     obj > other    -> true or false
+ *    self > 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.
+ *  Returns whether +self+ is "greater than" +other+;
+ *  equivalent to <tt>(self <=> other) > 0</tt>:
+ *
+ *    'foo' > 'foo'  # => false
+ *    'food' > 'foo' # => true
  */
 
 static VALUE
@@ -109,10 +112,15 @@ cmp_gt(VALUE x, VALUE y)
 
 /*
  *  call-seq:
- *     obj >= other    -> true or false
+ *    self >= other -> true or false
+ *
+ *  Returns whether +self+ is "greater than or equal to" +other+;
+ *  equivalent to <tt>(self <=> other) >= 0</tt>:
+ *
+ *    'food' >= 'foo'  # => true
+ *    'foo'  >= 'foo'  # => true
+ *    'foo'  >= 'food' # => 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
@@ -123,10 +131,14 @@ cmp_ge(VALUE x, VALUE y)
 
 /*
  *  call-seq:
- *     obj < other    -> true or false
+ *    self < other -> true or false
+ *
+ *  Returns whether +self+ is "less than" +other+;
+ *  equivalent to <tt>(self <=> other) < 0</tt>:
+ *
+ *    'foo' < 'foo'  # => false
+ *    'foo' < 'food' # => true
  *
- *  Compares two objects based on the receiver's <code><=></code>
- *  method, returning true if it returns a value less than 0.
  */
 
 static VALUE
@@ -137,10 +149,15 @@ cmp_lt(VALUE x, VALUE y)
 
 /*
  *  call-seq:
- *     obj <= other    -> true or false
+ *    self <= other -> true or false
+ *
+ *  Returns whether +self+ is "less than or equal to" +other+;
+ *  equivalent to <tt>(self <=> other) <= 0</tt>:
+ *
+ *    'foo' <= 'foo'  # => true
+ *    'foo' <= 'food' # => true
+ *    'food' <= 'foo' # => 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.
  */
 
 static VALUE
@@ -187,6 +204,12 @@ cmp_between(VALUE x, VALUE min, VALUE max)
  *     'd'.clamp('a', 'f')      #=> 'd'
  *     'z'.clamp('a', 'f')      #=> 'f'
  *
+ * If _min_ is +nil+, it is considered smaller than _obj_,
+ * and if _max_ is +nil+, it is considered greater than _obj_.
+ *
+ *     -20.clamp(0, nil)           #=> 0
+ *     523.clamp(nil, 100)         #=> 100
+ *
  * 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
@@ -229,7 +252,7 @@ cmp_clamp(int argc, VALUE *argv, VALUE x)
         }
     }
     if (!NIL_P(min) && !NIL_P(max) && cmpint(min, max) > 0) {
-        rb_raise(rb_eArgError, "min argument must be smaller than max argument");
+        rb_raise(rb_eArgError, "min argument must be less than or equal to max argument");
     }
 
     if (!NIL_P(min)) {
@@ -257,25 +280,28 @@ cmp_clamp(int argc, VALUE *argv, VALUE x)
  *  <code>==</code>, <code>>=</code>, and <code>></code>) and the
  *  method <code>between?</code>.
  *
- *     class SizeMatters
+ *     class StringSorter
  *       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 = StringSorter.new("Z")
+ *     s2 = StringSorter.new("YY")
+ *     s3 = StringSorter.new("XXX")
+ *     s4 = StringSorter.new("WWWW")
+ *     s5 = StringSorter.new("VVVVV")
  *
  *     s1 < s2                       #=> true
  *     s4.between?(s1, s3)           #=> false
@@ -284,13 +310,13 @@ cmp_clamp(int argc, VALUE *argv, VALUE x)
  *
  *  == What's Here
  *
- *  \Module \Comparable provides these methods, all of which use method <tt><=></tt>:
+ *  Module \Comparable provides these methods, all of which use method <tt>#<=></tt>:
  *
  *  - #<: Returns whether +self+ is less than the given object.
  *  - #<=: Returns whether +self+ is less than or equal to the given object.
  *  - #==: Returns whether +self+ is equal to the given object.
- *  - #>: Returns whether +self+ is greater than or equal to the given object.
- *  - #>=: Returns whether +self+ is greater than the given object.
+ *  - #>: Returns whether +self+ is greater than the given object.
+ *  - #>=: Returns whether +self+ is greater than or equal to the given object.
  *  - #between?: Returns +true+ if +self+ is between two given objects.
  *  - #clamp: For given objects +min+ and +max+, or range <tt>(min..max)</tt>, returns:
  *
diff --git a/compile.c b/compile.c
index d8d2738eb8..b7d6b07090 100644
--- a/compile.c
+++ b/compile.c
@@ -17,7 +17,6 @@
 #endif
 
 #include "encindex.h"
-#include "gc.h"
 #include "id_table.h"
 #include "internal.h"
 #include "internal/array.h"
@@ -25,30 +24,31 @@
 #include "internal/complex.h"
 #include "internal/encoding.h"
 #include "internal/error.h"
+#include "internal/gc.h"
 #include "internal/hash.h"
+#include "internal/io.h"
 #include "internal/numeric.h"
 #include "internal/object.h"
 #include "internal/rational.h"
 #include "internal/re.h"
+#include "internal/ruby_parser.h"
 #include "internal/symbol.h"
 #include "internal/thread.h"
 #include "internal/variable.h"
 #include "iseq.h"
+#include "ruby/ractor.h"
 #include "ruby/re.h"
 #include "ruby/util.h"
 #include "vm_core.h"
 #include "vm_callinfo.h"
 #include "vm_debug.h"
+#include "yjit.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 {
@@ -118,7 +118,7 @@ struct ensure_range {
 };
 
 struct iseq_compile_data_ensure_node_stack {
-    const NODE *ensure_node;
+    const void *ensure_node;
     struct iseq_compile_data_ensure_node_stack *prev;
     struct ensure_range *erange;
 };
@@ -213,36 +213,43 @@ const ID rb_iseq_shared_exc_local_tbl[] = {idERROR_INFO};
 #define NEW_CHILD_ISEQ(node, name, type, line_no) \
   new_child_iseq(iseq, (node), rb_fstring(name), iseq, (type), (line_no))
 
+#define NEW_CHILD_ISEQ_WITH_CALLBACK(callback_func, name, type, line_no) \
+  new_child_iseq_with_callback(iseq, (callback_func), (name), iseq, (type), (line_no))
+
 /* add instructions */
 #define ADD_SEQ(seq1, seq2) \
   APPEND_LIST((seq1), (seq2))
 
 /* add an instruction */
 #define ADD_INSN(seq, line_node, insn) \
-  ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_body(iseq, (line_node), BIN(insn), 0))
+  ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_body(iseq, nd_line(line_node), nd_node_id(line_node), BIN(insn), 0))
+
+/* add an instruction with the given line number and node id */
+#define ADD_SYNTHETIC_INSN(seq, line_no, node_id, insn) \
+  ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_body(iseq, (line_no), (node_id), BIN(insn), 0))
 
 /* insert an instruction before next */
-#define INSERT_BEFORE_INSN(next, line_node, insn) \
-  ELEM_INSERT_PREV(&(next)->link, (LINK_ELEMENT *) new_insn_body(iseq, (line_node), BIN(insn), 0))
+#define INSERT_BEFORE_INSN(next, line_no, node_id, insn) \
+  ELEM_INSERT_PREV(&(next)->link, (LINK_ELEMENT *) new_insn_body(iseq, line_no, node_id, BIN(insn), 0))
 
 /* insert an instruction after prev */
-#define INSERT_AFTER_INSN(prev, line_node, insn) \
-  ELEM_INSERT_NEXT(&(prev)->link, (LINK_ELEMENT *) new_insn_body(iseq, (line_node), BIN(insn), 0))
+#define INSERT_AFTER_INSN(prev, line_no, node_id, insn) \
+  ELEM_INSERT_NEXT(&(prev)->link, (LINK_ELEMENT *) new_insn_body(iseq, line_no, node_id, BIN(insn), 0))
 
 /* add an instruction with some operands (1, 2, 3, 5) */
 #define ADD_INSN1(seq, line_node, insn, op1) \
   ADD_ELEM((seq), (LINK_ELEMENT *) \
-           new_insn_body(iseq, (line_node), BIN(insn), 1, (VALUE)(op1)))
+           new_insn_body(iseq, nd_line(line_node), nd_node_id(line_node), BIN(insn), 1, (VALUE)(op1)))
 
 /* insert an instruction with some operands (1, 2, 3, 5) before next */
-#define INSERT_BEFORE_INSN1(next, line_node, insn, op1) \
+#define INSERT_BEFORE_INSN1(next, line_no, node_id, insn, op1) \
   ELEM_INSERT_PREV(&(next)->link, (LINK_ELEMENT *) \
-           new_insn_body(iseq, (line_node), BIN(insn), 1, (VALUE)(op1)))
+           new_insn_body(iseq, line_no, node_id, BIN(insn), 1, (VALUE)(op1)))
 
 /* insert an instruction with some operands (1, 2, 3, 5) after prev */
-#define INSERT_AFTER_INSN1(prev, line_node, insn, op1) \
+#define INSERT_AFTER_INSN1(prev, line_no, node_id, insn, op1) \
   ELEM_INSERT_NEXT(&(prev)->link, (LINK_ELEMENT *) \
-           new_insn_body(iseq, (line_node), BIN(insn), 1, (VALUE)(op1)))
+           new_insn_body(iseq, line_no, node_id, BIN(insn), 1, (VALUE)(op1)))
 
 #define LABEL_REF(label) ((label)->refcnt++)
 
@@ -251,11 +258,11 @@ const ID rb_iseq_shared_exc_local_tbl[] = {idERROR_INFO};
 
 #define ADD_INSN2(seq, line_node, insn, op1, op2) \
   ADD_ELEM((seq), (LINK_ELEMENT *) \
-           new_insn_body(iseq, (line_node), BIN(insn), 2, (VALUE)(op1), (VALUE)(op2)))
+           new_insn_body(iseq, nd_line(line_node), nd_node_id(line_node), BIN(insn), 2, (VALUE)(op1), (VALUE)(op2)))
 
 #define ADD_INSN3(seq, line_node, insn, op1, op2, op3) \
   ADD_ELEM((seq), (LINK_ELEMENT *) \
-           new_insn_body(iseq, (line_node), BIN(insn), 3, (VALUE)(op1), (VALUE)(op2), (VALUE)(op3)))
+           new_insn_body(iseq, nd_line(line_node), nd_node_id(line_node), BIN(insn), 3, (VALUE)(op1), (VALUE)(op2), (VALUE)(op3)))
 
 /* Specific Insn factory */
 #define ADD_SEND(seq, line_node, id, argc) \
@@ -277,7 +284,7 @@ const ID rb_iseq_shared_exc_local_tbl[] = {idERROR_INFO};
   ADD_SEND_R((seq), (line_node), (id), (argc), (block), (VALUE)INT2FIX(VM_CALL_FCALL), NULL)
 
 #define ADD_SEND_R(seq, line_node, id, argc, block, flag, keywords) \
-  ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_send(iseq, (line_node), (id), (VALUE)(argc), (block), (VALUE)(flag), (keywords)))
+  ADD_ELEM((seq), (LINK_ELEMENT *) new_insn_send(iseq, nd_line(line_node), nd_node_id(line_node), (id), (VALUE)(argc), (block), (VALUE)(flag), (keywords)))
 
 #define ADD_TRACE(seq, event) \
   ADD_ELEM((seq), (LINK_ELEMENT *)new_trace_body(iseq, (event), 0))
@@ -332,10 +339,10 @@ static void iseq_add_setlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, const NOD
   (debug_compile("== " desc "\n", \
                  iseq_compile_each(iseq, (anchor), (node), (popped))))
 
-#define COMPILE_RECV(anchor, desc, node) \
+#define COMPILE_RECV(anchor, desc, node, recv) \
     (private_recv_p(node) ? \
      (ADD_INSN(anchor, node, putself), VM_CALL_FCALL) : \
-     COMPILE(anchor, desc, node->nd_recv) ? 0 : -1)
+     COMPILE(anchor, desc, recv) ? 0 : -1)
 
 #define OPERAND_AT(insn, idx) \
   (((INSN*)(insn))->operands[(idx)])
@@ -431,12 +438,10 @@ do { \
 #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,},}}
+    LINK_ANCHOR name[1] = {{{ISEQ_ELEMENT_ANCHOR,},&name[0].anchor}}
 #define INIT_ANCHOR(name) \
-    (name->last = &name->anchor)
+    ((name->last = &name->anchor)->next = NULL) /* re-initialize */
 
 static inline VALUE
 freeze_hide_obj(VALUE obj)
@@ -470,7 +475,7 @@ 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, const NODE *const line_node, enum ruby_vminsn_type insn_id, int argc, ...);
+static INSN *new_insn_body(rb_iseq_t *iseq, int line_no, int node_id, 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);
@@ -482,16 +487,16 @@ 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 rb_ast_id_table_t *tbl);
+static int iseq_set_local_table(rb_iseq_t *iseq, const rb_ast_id_table_t *tbl, const NODE *const node_args);
 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 iseq_set_parameters_lvar_state(const 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_defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, VALUE needstr, bool ignore);
 static int compile_hash(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int method_call_keywords, int popped);
 
 /*
@@ -606,12 +611,25 @@ branch_coverage_valid_p(rb_iseq_t *iseq, int first_line)
 }
 
 static VALUE
-decl_branch_base(rb_iseq_t *iseq, const NODE *node, const char *type)
+setup_branch(const rb_code_location_t *loc, const char *type, VALUE structure, VALUE key)
 {
-    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);
+    const int first_lineno = loc->beg_pos.lineno, first_column = loc->beg_pos.column;
+    const int last_lineno = loc->end_pos.lineno, last_column = loc->end_pos.column;
+    VALUE branch = rb_ary_hidden_new(6);
+
+    rb_hash_aset(structure, 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));
+    return branch;
+}
 
-    if (!branch_coverage_valid_p(iseq, first_lineno)) return Qundef;
+static VALUE
+decl_branch_base(rb_iseq_t *iseq, VALUE key, const rb_code_location_t *loc, const char *type)
+{
+    if (!branch_coverage_valid_p(iseq, loc->beg_pos.lineno)) return Qundef;
 
     /*
      * if !structure[node]
@@ -622,18 +640,11 @@ decl_branch_base(rb_iseq_t *iseq, const NODE *node, const char *type)
      */
 
     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_hidden_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));
+        branch_base = setup_branch(loc, type, structure, key);
         branches = rb_hash_new();
         rb_obj_hide(branches);
         rb_ary_push(branch_base, branches);
@@ -655,12 +666,9 @@ generate_dummy_line_node(int lineno, int node_id)
 }
 
 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)
+add_trace_branch_coverage(rb_iseq_t *iseq, LINK_ANCHOR *const seq, const rb_code_location_t *loc, int node_id, 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 (!branch_coverage_valid_p(iseq, loc->beg_pos.lineno)) return;
 
     /*
      * if !branches[branch_id]
@@ -675,13 +683,7 @@ add_trace_branch_coverage(rb_iseq_t *iseq, LINK_ANCHOR *const seq, const NODE *n
     long counter_idx;
 
     if (NIL_P(branch)) {
-        branch = rb_ary_hidden_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));
+        branch = setup_branch(loc, type, branches, key);
         VALUE counters = RARRAY_AREF(ISEQ_BRANCH_COVERAGE(iseq), 1);
         counter_idx = RARRAY_LEN(counters);
         rb_ary_push(branch, LONG2FIX(counter_idx));
@@ -692,9 +694,7 @@ add_trace_branch_coverage(rb_iseq_t *iseq, LINK_ANCHOR *const seq, const NODE *n
     }
 
     ADD_TRACE_WITH_DATA(seq, RUBY_EVENT_COVERAGE_BRANCH, counter_idx);
-
-    NODE dummy_line_node = generate_dummy_line_node(last_lineno, nd_node_id(node));
-    ADD_INSN(seq, &dummy_line_node, nop);
+    ADD_SYNTHETIC_INSN(seq, loc->end_pos.lineno, node_id, nop);
 }
 
 #define ISEQ_LAST_LINE(iseq) (ISEQ_COMPILE_DATA(iseq)->last_line)
@@ -721,6 +721,129 @@ validate_labels(rb_iseq_t *iseq, st_table *labels_table)
     st_free_table(labels_table);
 }
 
+static NODE *
+get_nd_recv(const NODE *node)
+{
+    switch (nd_type(node)) {
+      case NODE_CALL:
+        return RNODE_CALL(node)->nd_recv;
+      case NODE_OPCALL:
+        return RNODE_OPCALL(node)->nd_recv;
+      case NODE_FCALL:
+        return 0;
+      case NODE_QCALL:
+        return RNODE_QCALL(node)->nd_recv;
+      case NODE_VCALL:
+        return 0;
+      case NODE_ATTRASGN:
+        return RNODE_ATTRASGN(node)->nd_recv;
+      case NODE_OP_ASGN1:
+        return RNODE_OP_ASGN1(node)->nd_recv;
+      case NODE_OP_ASGN2:
+        return RNODE_OP_ASGN2(node)->nd_recv;
+      default:
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(node)));
+    }
+}
+
+static ID
+get_node_call_nd_mid(const NODE *node)
+{
+    switch (nd_type(node)) {
+      case NODE_CALL:
+        return RNODE_CALL(node)->nd_mid;
+      case NODE_OPCALL:
+        return RNODE_OPCALL(node)->nd_mid;
+      case NODE_FCALL:
+        return RNODE_FCALL(node)->nd_mid;
+      case NODE_QCALL:
+        return RNODE_QCALL(node)->nd_mid;
+      case NODE_VCALL:
+        return RNODE_VCALL(node)->nd_mid;
+      case NODE_ATTRASGN:
+        return RNODE_ATTRASGN(node)->nd_mid;
+      default:
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(node)));
+    }
+}
+
+static NODE *
+get_nd_args(const NODE *node)
+{
+    switch (nd_type(node)) {
+      case NODE_CALL:
+        return RNODE_CALL(node)->nd_args;
+      case NODE_OPCALL:
+        return RNODE_OPCALL(node)->nd_args;
+      case NODE_FCALL:
+        return RNODE_FCALL(node)->nd_args;
+      case NODE_QCALL:
+        return RNODE_QCALL(node)->nd_args;
+      case NODE_VCALL:
+        return 0;
+      case NODE_ATTRASGN:
+        return RNODE_ATTRASGN(node)->nd_args;
+      default:
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(node)));
+    }
+}
+
+static ID
+get_node_colon_nd_mid(const NODE *node)
+{
+    switch (nd_type(node)) {
+      case NODE_COLON2:
+        return RNODE_COLON2(node)->nd_mid;
+      case NODE_COLON3:
+        return RNODE_COLON3(node)->nd_mid;
+      default:
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(node)));
+    }
+}
+
+static ID
+get_nd_vid(const NODE *node)
+{
+    switch (nd_type(node)) {
+      case NODE_LASGN:
+        return RNODE_LASGN(node)->nd_vid;
+      case NODE_DASGN:
+        return RNODE_DASGN(node)->nd_vid;
+      case NODE_IASGN:
+        return RNODE_IASGN(node)->nd_vid;
+      case NODE_CVASGN:
+        return RNODE_CVASGN(node)->nd_vid;
+      default:
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(node)));
+    }
+}
+
+static NODE *
+get_nd_value(const NODE *node)
+{
+    switch (nd_type(node)) {
+      case NODE_LASGN:
+        return RNODE_LASGN(node)->nd_value;
+      case NODE_DASGN:
+        return RNODE_DASGN(node)->nd_value;
+      default:
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(node)));
+    }
+}
+
+static VALUE
+get_string_value(const NODE *node)
+{
+    switch (nd_type(node)) {
+      case NODE_STR:
+        return RB_OBJ_SET_SHAREABLE(rb_node_str_string_val(node));
+      case NODE_FILE:
+        return RB_OBJ_SET_SHAREABLE(rb_node_file_path_val(node));
+      default:
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(node)));
+    }
+}
+
 VALUE
 rb_iseq_compile_callback(rb_iseq_t *iseq, const struct rb_iseq_new_with_callback_callback_func * ifunc)
 {
@@ -729,32 +852,30 @@ rb_iseq_compile_callback(rb_iseq_t *iseq, const struct rb_iseq_new_with_callback
 
     (*ifunc->func)(iseq, ret, ifunc->data);
 
-    NODE dummy_line_node = generate_dummy_line_node(ISEQ_COMPILE_DATA(iseq)->last_line, -1);
-    ADD_INSN(ret, &dummy_line_node, leave);
+    ADD_SYNTHETIC_INSN(ret, ISEQ_COMPILE_DATA(iseq)->last_line, -1, leave);
 
     CHECK(iseq_setup_insn(iseq, ret));
     return iseq_setup(iseq, ret);
 }
 
+static bool drop_unreachable_return(LINK_ANCHOR *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);
+        iseq_set_local_table(iseq, 0, 0);
     }
     /* assume node is T_NODE */
     else if (nd_type_p(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);
+        iseq_set_local_table(iseq, RNODE_SCOPE(node)->nd_tbl, (NODE *)RNODE_SCOPE(node)->nd_args);
+        iseq_set_arguments(iseq, ret, (NODE *)RNODE_SCOPE(node)->nd_args);
+        iseq_set_parameters_lvar_state(iseq);
 
         switch (ISEQ_BODY(iseq)->type) {
           case ISEQ_TYPE_BLOCK:
@@ -766,10 +887,9 @@ rb_iseq_compile_node(rb_iseq_t *iseq, const NODE *node)
                 end->rescued = LABEL_RESCUE_END;
 
                 ADD_TRACE(ret, RUBY_EVENT_B_CALL);
-                NODE dummy_line_node = generate_dummy_line_node(ISEQ_BODY(iseq)->location.first_lineno, -1);
-                ADD_INSN (ret, &dummy_line_node, nop);
+                ADD_SYNTHETIC_INSN(ret, ISEQ_BODY(iseq)->location.first_lineno, -1, nop);
                 ADD_LABEL(ret, start);
-                CHECK(COMPILE(ret, "block body", node->nd_body));
+                CHECK(COMPILE(ret, "block body", RNODE_SCOPE(node)->nd_body));
                 ADD_LABEL(ret, end);
                 ADD_TRACE(ret, RUBY_EVENT_B_RETURN);
                 ISEQ_COMPILE_DATA(iseq)->last_line = ISEQ_BODY(iseq)->location.code_location.end_pos.lineno;
@@ -782,23 +902,23 @@ rb_iseq_compile_node(rb_iseq_t *iseq, const NODE *node)
           case ISEQ_TYPE_CLASS:
             {
                 ADD_TRACE(ret, RUBY_EVENT_CLASS);
-                CHECK(COMPILE(ret, "scoped node", node->nd_body));
+                CHECK(COMPILE(ret, "scoped node", RNODE_SCOPE(node)->nd_body));
                 ADD_TRACE(ret, RUBY_EVENT_END);
                 ISEQ_COMPILE_DATA(iseq)->last_line = nd_line(node);
                 break;
             }
           case ISEQ_TYPE_METHOD:
             {
-                ISEQ_COMPILE_DATA(iseq)->root_node = node->nd_body;
+                ISEQ_COMPILE_DATA(iseq)->root_node = RNODE_SCOPE(node)->nd_body;
                 ADD_TRACE(ret, RUBY_EVENT_CALL);
-                CHECK(COMPILE(ret, "scoped node", node->nd_body));
-                ISEQ_COMPILE_DATA(iseq)->root_node = node->nd_body;
+                CHECK(COMPILE(ret, "scoped node", RNODE_SCOPE(node)->nd_body));
+                ISEQ_COMPILE_DATA(iseq)->root_node = RNODE_SCOPE(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));
+            CHECK(COMPILE(ret, "scoped node", RNODE_SCOPE(node)->nd_body));
             break;
           }
         }
@@ -840,9 +960,8 @@ rb_iseq_compile_node(rb_iseq_t *iseq, const NODE *node)
         ADD_GETLOCAL(ret, &dummy_line_node, LVAR_ERRINFO, 0);
         ADD_INSN1(ret, &dummy_line_node, throw, INT2FIX(0) /* continue throw */ );
     }
-    else {
-        NODE dummy_line_node = generate_dummy_line_node(ISEQ_COMPILE_DATA(iseq)->last_line, -1);
-        ADD_INSN(ret, &dummy_line_node, leave);
+    else if (!drop_unreachable_return(ret)) {
+        ADD_SYNTHETIC_INSN(ret, ISEQ_COMPILE_DATA(iseq)->last_line, -1, leave);
     }
 
 #if OPT_SUPPORT_JOKE
@@ -872,6 +991,12 @@ rb_iseq_translate_threaded_code(rb_iseq_t *iseq)
     }
     FL_SET((VALUE)iseq, ISEQ_TRANSLATED);
 #endif
+
+#if USE_YJIT
+    rb_yjit_live_iseq_count++;
+    rb_yjit_iseq_alloc_count++;
+#endif
+
     return COMPILE_OK;
 }
 
@@ -1165,10 +1290,15 @@ static void
 APPEND_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *const anc1, LINK_ANCHOR *const anc2)
 {
     if (anc2->anchor.next) {
+        /* LINK_ANCHOR must not loop */
+        RUBY_ASSERT(anc2->last != &anc2->anchor);
         anc1->last->next = anc2->anchor.next;
         anc2->anchor.next->prev = anc1->last;
         anc1->last = anc2->last;
     }
+    else {
+        RUBY_ASSERT(anc2->last == &anc2->anchor);
+    }
     verify_list("append", anc1);
 }
 #if CPDEBUG < 0
@@ -1228,6 +1358,7 @@ new_label_body(rb_iseq_t *iseq, long line)
     labelobj->set = 0;
     labelobj->rescued = LABEL_RESCUE_NONE;
     labelobj->unremovable = 0;
+    labelobj->position = -1;
     return labelobj;
 }
 
@@ -1243,9 +1374,37 @@ new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line)
     return adjust;
 }
 
+static void
+iseq_insn_each_markable_object(INSN *insn, void (*func)(VALUE *, VALUE), VALUE data)
+{
+    const char *types = insn_op_types(insn->insn_id);
+    for (int j = 0; types[j]; j++) {
+        char type = types[j];
+        switch (type) {
+          case TS_CDHASH:
+          case TS_ISEQ:
+          case TS_VALUE:
+          case TS_IC: // constant path array
+          case TS_CALLDATA: // ci is stored.
+            func(&OPERAND_AT(insn, j), data);
+            break;
+          default:
+            break;
+        }
+    }
+}
+
+static void
+iseq_insn_each_object_write_barrier(VALUE * obj, VALUE iseq)
+{
+    RB_OBJ_WRITTEN(iseq, Qundef, *obj);
+    RUBY_ASSERT(SPECIAL_CONST_P(*obj) ||
+                RBASIC_CLASS(*obj) == 0 || // hidden
+                RB_OBJ_SHAREABLE_P(*obj));
+}
+
 static INSN *
-new_insn_core(rb_iseq_t *iseq, const NODE *line_node,
-              int insn_id, int argc, VALUE *argv)
+new_insn_core(rb_iseq_t *iseq, int line_no, int node_id, int insn_id, int argc, VALUE *argv)
 {
     INSN *iobj = compile_data_alloc_insn(iseq);
 
@@ -1254,17 +1413,20 @@ new_insn_core(rb_iseq_t *iseq, const NODE *line_node,
     iobj->link.type = ISEQ_ELEMENT_INSN;
     iobj->link.next = 0;
     iobj->insn_id = insn_id;
-    iobj->insn_info.line_no = nd_line(line_node);
-    iobj->insn_info.node_id = nd_node_id(line_node);
+    iobj->insn_info.line_no = line_no;
+    iobj->insn_info.node_id = node_id;
     iobj->insn_info.events = 0;
     iobj->operands = argv;
     iobj->operand_size = argc;
     iobj->sc_state = 0;
+
+    iseq_insn_each_markable_object(iobj, iseq_insn_each_object_write_barrier, (VALUE)iseq);
+
     return iobj;
 }
 
 static INSN *
-new_insn_body(rb_iseq_t *iseq, const NODE *const line_node, enum ruby_vminsn_type insn_id, int argc, ...)
+new_insn_body(rb_iseq_t *iseq, int line_no, int node_id, enum ruby_vminsn_type insn_id, int argc, ...)
 {
     VALUE *operands = 0;
     va_list argv;
@@ -1278,7 +1440,31 @@ new_insn_body(rb_iseq_t *iseq, const NODE *const line_node, enum ruby_vminsn_typ
         }
         va_end(argv);
     }
-    return new_insn_core(iseq, line_node, insn_id, argc, operands);
+    return new_insn_core(iseq, line_no, node_id, insn_id, argc, operands);
+}
+
+static INSN *
+insn_replace_with_operands(rb_iseq_t *iseq, INSN *iobj, 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);
+    }
+
+    iobj->insn_id = insn_id;
+    iobj->operand_size = argc;
+    iobj->operands = operands;
+    iseq_insn_each_markable_object(iobj, iseq_insn_each_object_write_barrier, (VALUE)iseq);
+
+    return iobj;
 }
 
 static const struct rb_callinfo *
@@ -1286,16 +1472,16 @@ new_callinfo(rb_iseq_t *iseq, ID mid, int argc, unsigned int flag, struct rb_cal
 {
     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;
     }
 
+    if (!(flag & (VM_CALL_ARGS_SPLAT | VM_CALL_ARGS_BLOCKARG | VM_CALL_KWARG | VM_CALL_KW_SPLAT | VM_CALL_FORWARDING))
+        && !has_blockiseq) {
+        flag |= VM_CALL_ARGS_SIMPLE;
+    }
+
     ISEQ_BODY(iseq)->ci_size++;
     const struct rb_callinfo *ci = vm_ci_new(mid, flag, argc, kw_arg);
     RB_OBJ_WRITTEN(iseq, Qundef, ci);
@@ -1303,7 +1489,7 @@ new_callinfo(rb_iseq_t *iseq, ID mid, int argc, unsigned int flag, struct rb_cal
 }
 
 static INSN *
-new_insn_send(rb_iseq_t *iseq, const NODE *const line_node, ID id, VALUE argc, const rb_iseq_t *blockiseq, VALUE flag, struct rb_callinfo_kwarg *keywords)
+new_insn_send(rb_iseq_t *iseq, int line_no, int node_id, 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);
     VALUE ci = (VALUE)new_callinfo(iseq, id, FIX2INT(argc), FIX2INT(flag), keywords, blockiseq != NULL);
@@ -1312,7 +1498,16 @@ new_insn_send(rb_iseq_t *iseq, const NODE *const line_node, ID id, VALUE argc, c
     if (blockiseq) {
         RB_OBJ_WRITTEN(iseq, Qundef, blockiseq);
     }
-    INSN *insn = new_insn_core(iseq, line_node, BIN(send), 2, operands);
+
+    INSN *insn;
+
+    if (vm_ci_flag((struct rb_callinfo *)ci) & VM_CALL_FORWARDING) {
+        insn = new_insn_core(iseq, line_no, node_id, BIN(sendforward), 2, operands);
+    }
+    else {
+        insn = new_insn_core(iseq, line_no, node_id, BIN(send), 2, operands);
+    }
+
     RB_OBJ_WRITTEN(iseq, Qundef, ci);
     RB_GC_GUARD(ci);
     return insn;
@@ -1323,19 +1518,16 @@ new_child_iseq(rb_iseq_t *iseq, const NODE *const node,
                VALUE name, const rb_iseq_t *parent, enum rb_iseq_type type, int line_no)
 {
     rb_iseq_t *ret_iseq;
-    rb_ast_body_t ast;
-
-    ast.root = node;
-    ast.compile_option = 0;
-    ast.script_lines = ISEQ_BODY(iseq)->variable.script_lines;
+    VALUE ast_value = rb_ruby_ast_new(node);
 
     debugs("[new_child_iseq]> ---------------------------------------\n");
     int isolated_depth = ISEQ_COMPILE_DATA(iseq)->isolated_depth;
-    ret_iseq = rb_iseq_new_with_opt(&ast, name,
+    ret_iseq = rb_iseq_new_with_opt(ast_value, name,
                                     rb_iseq_path(iseq), rb_iseq_realpath(iseq),
                                     line_no, parent,
                                     isolated_depth ? isolated_depth + 1 : 0,
-                                    type, ISEQ_COMPILE_DATA(iseq)->option);
+                                    type, ISEQ_COMPILE_DATA(iseq)->option,
+                                    ISEQ_BODY(iseq)->variable.script_lines);
     debugs("[new_child_iseq]< ---------------------------------------\n");
     return ret_iseq;
 }
@@ -1355,11 +1547,14 @@ new_child_iseq_with_callback(rb_iseq_t *iseq, const struct rb_iseq_new_with_call
 }
 
 static void
-set_catch_except_p(struct rb_iseq_constant_body *body)
+set_catch_except_p(rb_iseq_t *iseq)
 {
-    body->catch_except_p = true;
-    if (body->parent_iseq != NULL) {
-        set_catch_except_p(ISEQ_BODY(body->parent_iseq));
+    RUBY_ASSERT(ISEQ_COMPILE_DATA(iseq));
+    ISEQ_COMPILE_DATA(iseq)->catch_except_p = true;
+    if (ISEQ_BODY(iseq)->parent_iseq != NULL) {
+        if (ISEQ_COMPILE_DATA(ISEQ_BODY(iseq)->parent_iseq)) {
+          set_catch_except_p((rb_iseq_t *) ISEQ_BODY(iseq)->parent_iseq);
+        }
     }
 }
 
@@ -1371,7 +1566,7 @@ set_catch_except_p(struct rb_iseq_constant_body *body)
    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)
+update_catch_except_flags(rb_iseq_t *iseq, struct rb_iseq_constant_body *body)
 {
     unsigned int pos;
     size_t i;
@@ -1384,7 +1579,7 @@ update_catch_except_flags(struct rb_iseq_constant_body *body)
     while (pos < body->iseq_size) {
         insn = rb_vm_insn_decode(body->iseq_encoded[pos]);
         if (insn == BIN(throw)) {
-            set_catch_except_p(body);
+            set_catch_except_p(iseq);
             break;
         }
         pos += insn_len(insn);
@@ -1399,7 +1594,8 @@ update_catch_except_flags(struct rb_iseq_constant_body *body)
         if (entry->type != CATCH_TYPE_BREAK
             && entry->type != CATCH_TYPE_NEXT
             && entry->type != CATCH_TYPE_REDO) {
-            body->catch_except_p = true;
+            RUBY_ASSERT(ISEQ_COMPILE_DATA(iseq));
+            ISEQ_COMPILE_DATA(iseq)->catch_except_p = true;
             break;
         }
     }
@@ -1411,9 +1607,9 @@ 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);
+    const VALUE *tptr = RARRAY_CONST_PTR(catch_table_ary);
     for (i = 0; i < tlen; i++) {
-        const VALUE *ptr = RARRAY_CONST_PTR_TRANSIENT(tptr[i]);
+        const VALUE *ptr = RARRAY_CONST_PTR(tptr[i]);
         LINK_ELEMENT *end = (LINK_ELEMENT *)(ptr[2] & ~1);
         LINK_ELEMENT *cont = (LINK_ELEMENT *)(ptr[4] & ~1);
         LINK_ELEMENT *e;
@@ -1426,14 +1622,15 @@ iseq_insert_nop_between_end_and_cont(rb_iseq_t *iseq)
 
             for (e = end; e && (IS_LABEL(e) || IS_TRACE(e)); e = e->next) {
                 if (e == cont) {
-                    NODE dummy_line_node = generate_dummy_line_node(0, -1);
-                    INSN *nop = new_insn_core(iseq, &dummy_line_node, BIN(nop), 0, 0);
+                    INSN *nop = new_insn_core(iseq, 0, -1, BIN(nop), 0, 0);
                     ELEM_INSERT_NEXT(end, &nop->link);
                     break;
                 }
             }
         }
     }
+
+    RB_GC_GUARD(catch_table_ary);
 }
 
 static int
@@ -1460,13 +1657,6 @@ iseq_setup_insn(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
             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)
@@ -1496,10 +1686,12 @@ iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
     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(iseq));
+    RUBY_ASSERT(ISEQ_COMPILE_DATA(iseq));
+    update_catch_except_flags(iseq, ISEQ_BODY(iseq));
 
     debugs("[compile step 6.1 (remove unused catch tables)] \n");
-    if (!ISEQ_BODY(iseq)->catch_except_p && ISEQ_BODY(iseq)->catch_table) {
+    RUBY_ASSERT(ISEQ_COMPILE_DATA(iseq));
+    if (!ISEQ_COMPILE_DATA(iseq)->catch_except_p && ISEQ_BODY(iseq)->catch_table) {
         xfree(ISEQ_BODY(iseq)->catch_table);
         ISEQ_BODY(iseq)->catch_table = NULL;
     }
@@ -1526,6 +1718,7 @@ iseq_set_exception_local_table(rb_iseq_t *iseq)
 {
     ISEQ_BODY(iseq)->local_table_size = numberof(rb_iseq_shared_exc_local_tbl);
     ISEQ_BODY(iseq)->local_table = rb_iseq_shared_exc_local_tbl;
+    ISEQ_BODY(iseq)->lvar_states = NULL; // $! is read-only, so don't need lvar_states
     return COMPILE_OK;
 }
 
@@ -1635,7 +1828,7 @@ access_outer_variables(const rb_iseq_t *iseq, int level, ID id, bool write)
             COMPILE_ERROR(iseq, ISEQ_LAST_LINE(iseq), "can not yield from isolated Proc");
         }
         else {
-            COMPILE_ERROR(iseq, ISEQ_LAST_LINE(iseq), "can not access variable `%s' from isolated Proc", rb_id2name(id));
+            COMPILE_ERROR(iseq, ISEQ_LAST_LINE(iseq), "can not access variable '%s' from isolated Proc", rb_id2name(id));
         }
     }
 
@@ -1673,6 +1866,46 @@ iseq_lvar_id(const rb_iseq_t *iseq, int idx, int level)
 }
 
 static void
+update_lvar_state(const rb_iseq_t *iseq, int level, int idx)
+{
+    for (int i=0; i<level; i++) {
+        iseq = ISEQ_BODY(iseq)->parent_iseq;
+    }
+
+    enum lvar_state *states = ISEQ_BODY(iseq)->lvar_states;
+    int table_idx = ISEQ_BODY(iseq)->local_table_size - idx;
+    switch (states[table_idx]) {
+      case lvar_uninitialized:
+        states[table_idx] = lvar_initialized;
+        break;
+      case lvar_initialized:
+        states[table_idx] = lvar_reassigned;
+        break;
+      case lvar_reassigned:
+        /* nothing */
+        break;
+      default:
+        rb_bug("unreachable");
+    }
+}
+
+static int
+iseq_set_parameters_lvar_state(const rb_iseq_t *iseq)
+{
+    for (unsigned int i=0; i<ISEQ_BODY(iseq)->param.size; i++) {
+        ISEQ_BODY(iseq)->lvar_states[i] = lvar_initialized;
+    }
+
+    int lead_num = ISEQ_BODY(iseq)->param.lead_num;
+    int opt_num = ISEQ_BODY(iseq)->param.opt_num;
+    for (int i=0; i<opt_num; i++) {
+        ISEQ_BODY(iseq)->lvar_states[lead_num + i] = lvar_uninitialized;
+    }
+
+    return COMPILE_OK;
+}
+
+static void
 iseq_add_getlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, const NODE *const line_node, int idx, int level)
 {
     if (iseq_local_block_param_p(iseq, idx, level)) {
@@ -1693,6 +1926,7 @@ iseq_add_setlocal(rb_iseq_t *iseq, LINK_ANCHOR *const seq, const NODE *const lin
     else {
         ADD_INSN2(seq, line_node, setlocal, INT2FIX((idx) + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
     }
+    update_lvar_state(iseq, level, idx);
     if (level > 0) access_outer_variables(iseq, level, iseq_lvar_id(iseq, idx, level), Qtrue);
 }
 
@@ -1740,7 +1974,7 @@ 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;
+    const rb_node_kw_arg_t *node = args->kw_args;
     struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
     struct rb_iseq_param_keyword *keyword;
     const VALUE default_values = rb_ary_hidden_new(1);
@@ -1759,7 +1993,7 @@ iseq_set_arguments_keywords(rb_iseq_t *iseq, LINK_ANCHOR *const optargs,
 
     node = args->kw_args;
     while (node) {
-        const NODE *val_node = node->nd_body->nd_value;
+        const NODE *val_node = get_nd_value(node->nd_body);
         VALUE dv;
 
         if (val_node == NODE_SPECIAL_REQUIRED_KEYWORD) {
@@ -1767,8 +2001,29 @@ iseq_set_arguments_keywords(rb_iseq_t *iseq, LINK_ANCHOR *const optargs,
         }
         else {
             switch (nd_type(val_node)) {
-              case NODE_LIT:
-                dv = val_node->nd_lit;
+              case NODE_SYM:
+                dv = rb_node_sym_string_val(val_node);
+                break;
+              case NODE_REGX:
+                dv = rb_node_regx_string_val(val_node);
+                break;
+              case NODE_LINE:
+                dv = rb_node_line_lineno_val(val_node);
+                break;
+              case NODE_INTEGER:
+                dv = rb_node_integer_literal_val(val_node);
+                break;
+              case NODE_FLOAT:
+                dv = rb_node_float_literal_val(val_node);
+                break;
+              case NODE_RATIONAL:
+                dv = rb_node_rational_literal_val(val_node);
+                break;
+              case NODE_IMAGINARY:
+                dv = rb_node_imaginary_literal_val(val_node);
+                break;
+              case NODE_ENCODING:
+                dv = rb_node_encoding_val(val_node);
                 break;
               case NODE_NIL:
                 dv = Qnil;
@@ -1780,7 +2035,7 @@ iseq_set_arguments_keywords(rb_iseq_t *iseq, LINK_ANCHOR *const optargs,
                 dv = Qfalse;
                 break;
               default:
-                NO_CHECK(COMPILE_POPPED(optargs, "kwarg", node)); /* nd_type_p(node, NODE_KW_ARG) */
+                NO_CHECK(COMPILE_POPPED(optargs, "kwarg", RNODE(node))); /* nd_type_p(node, NODE_KW_ARG) */
                 dv = complex_mark;
             }
 
@@ -1793,23 +2048,24 @@ iseq_set_arguments_keywords(rb_iseq_t *iseq, LINK_ANCHOR *const optargs,
 
     keyword->num = kw;
 
-    if (args->kw_rest_arg->nd_vid != 0) {
+    if (RNODE_DVAR(args->kw_rest_arg)->nd_vid != 0) {
+        ID kw_id = ISEQ_BODY(iseq)->local_table[arg_size];
         keyword->rest_start = arg_size++;
         body->param.flags.has_kwrest = TRUE;
+
+        if (kw_id == idPow) body->param.flags.anon_kwrest = TRUE;
     }
     keyword->required_num = rkw;
     keyword->table = &body->local_table[keyword->bits_start - keyword->num];
 
-    {
+    if (RARRAY_LEN(default_values)) {
         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;
+            if (!SPECIAL_CONST_P(dv)) rb_ractor_make_shareable(dv);
+            RB_OBJ_WRITE(iseq, &dvs[i], dv);
         }
 
         keyword->default_values = dvs;
@@ -1817,6 +2073,22 @@ iseq_set_arguments_keywords(rb_iseq_t *iseq, LINK_ANCHOR *const optargs,
     return arg_size;
 }
 
+static void
+iseq_set_use_block(rb_iseq_t *iseq)
+{
+    struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
+    if (!body->param.flags.use_block) {
+        body->param.flags.use_block = 1;
+
+        rb_vm_t *vm = GET_VM();
+
+        if (!rb_warning_category_enabled_p(RB_WARN_CATEGORY_STRICT_UNUSED_BLOCK)) {
+            st_data_t key = (st_data_t)rb_intern_str(body->location.label); // String -> ID
+            set_insert(vm->unused_block_warning_table, key);
+        }
+    }
+}
+
 static int
 iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *const node_args)
 {
@@ -1824,7 +2096,7 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *cons
 
     if (node_args) {
         struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
-        struct rb_args_info *args = node_args->nd_ainfo;
+        struct rb_args_info *args = &RNODE_ARGS(node_args)->nd_ainfo;
         ID rest_id = 0;
         int last_comma = 0;
         ID block_id = 0;
@@ -1832,7 +2104,6 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *cons
 
         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);
@@ -1844,15 +2115,22 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *cons
         }
         block_id = args->block_arg;
 
+        bool optimized_forward = (args->forwarding && args->pre_args_num == 0 && !args->opt_args);
+
+        if (optimized_forward) {
+            rest_id = 0;
+            block_id = 0;
+        }
+
         if (args->opt_args) {
-            const NODE *node = args->opt_args;
+            const rb_node_opt_arg_t *node = args->opt_args;
             LABEL *label;
             VALUE labels = rb_ary_hidden_new(1);
             VALUE *opt_table;
             int i = 0, j;
 
             while (node) {
-                label = NEW_LABEL(nd_line(node));
+                label = NEW_LABEL(nd_line(RNODE(node)));
                 rb_ary_push(labels, (VALUE)label | 1);
                 ADD_LABEL(optargs, label);
                 NO_CHECK(COMPILE_POPPED(optargs, "optarg", node->nd_body));
@@ -1867,7 +2145,7 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *cons
 
             opt_table = ALLOC_N(VALUE, i+1);
 
-            MEMCPY(opt_table, RARRAY_CONST_PTR_TRANSIENT(labels), VALUE, i+1);
+            MEMCPY(opt_table, RARRAY_CONST_PTR(labels), VALUE, i+1);
             for (j = 0; j < i+1; j++) {
                 opt_table[j] &= ~1;
             }
@@ -1882,7 +2160,8 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *cons
         if (rest_id) {
             body->param.rest_start = arg_size++;
             body->param.flags.has_rest = TRUE;
-            assert(body->param.rest_start != -1);
+            if (rest_id == '*') body->param.flags.anon_rest = TRUE;
+            RUBY_ASSERT(body->param.rest_start != -1);
         }
 
         if (args->first_post_arg) {
@@ -1899,11 +2178,16 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *cons
         if (args->kw_args) {
             arg_size = iseq_set_arguments_keywords(iseq, optargs, args, arg_size);
         }
-        else if (args->kw_rest_arg) {
+        else if (args->kw_rest_arg && !optimized_forward) {
+            ID kw_id = ISEQ_BODY(iseq)->local_table[arg_size];
             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;
+
+            static ID anon_kwrest = 0;
+            if (!anon_kwrest) anon_kwrest = rb_intern("**");
+            if (kw_id == anon_kwrest) body->param.flags.anon_kwrest = TRUE;
         }
         else if (args->no_kwarg) {
             body->param.flags.accepts_no_kwarg = TRUE;
@@ -1912,6 +2196,14 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *cons
         if (block_id) {
             body->param.block_start = arg_size++;
             body->param.flags.has_block = TRUE;
+            iseq_set_use_block(iseq);
+        }
+
+        // Only optimize specifically methods like this: `foo(...)`
+        if (optimized_forward) {
+            body->param.flags.use_block = 1;
+            body->param.flags.forwardable = TRUE;
+            arg_size = 1;
         }
 
         iseq_calc_param_size(iseq);
@@ -1943,14 +2235,36 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *cons
 }
 
 static int
-iseq_set_local_table(rb_iseq_t *iseq, const rb_ast_id_table_t *tbl)
+iseq_set_local_table(rb_iseq_t *iseq, const rb_ast_id_table_t *tbl, const NODE *const node_args)
 {
     unsigned int size = tbl ? tbl->size : 0;
+    unsigned int offset = 0;
+
+    if (node_args) {
+        struct rb_args_info *args = &RNODE_ARGS(node_args)->nd_ainfo;
+
+        // If we have a function that only has `...` as the parameter,
+        // then its local table should only be `...`
+        // FIXME: I think this should be fixed in the AST rather than special case here.
+        if (args->forwarding && args->pre_args_num == 0 && !args->opt_args) {
+            CHECK(size >= 3);
+            size -= 3;
+            offset += 3;
+        }
+    }
 
     if (size > 0) {
-        ID *ids = (ID *)ALLOC_N(ID, size);
-        MEMCPY(ids, tbl->ids, ID, size);
+        ID *ids = ALLOC_N(ID, size);
+        MEMCPY(ids, tbl->ids + offset, ID, size);
         ISEQ_BODY(iseq)->local_table = ids;
+
+        enum lvar_state *states = ALLOC_N(enum lvar_state, size);
+        // fprintf(stderr, "iseq:%p states:%p size:%d\n", iseq, states, (int)size);
+        for (unsigned int i=0; i<size; i++) {
+            states[i] = lvar_uninitialized;
+            // fprintf(stderr, "id:%s\n", rb_id2name(ISEQ_BODY(iseq)->local_table[i]));
+        }
+        ISEQ_BODY(iseq)->lvar_states = states;
     }
     ISEQ_BODY(iseq)->local_table_size = size;
 
@@ -2233,6 +2547,7 @@ add_adjust_info(struct iseq_insn_info_entry *insns_info, unsigned int *positions
                 int insns_info_index, int code_index, const ADJUST *adjust)
 {
     insns_info[insns_info_index].line_no    = adjust->line_no;
+    insns_info[insns_info_index].node_id    = -1;
     insns_info[insns_info_index].events     = 0;
     positions[insns_info_index]             = code_index;
     return TRUE;
@@ -2244,7 +2559,7 @@ array_to_idlist(VALUE arr)
     RUBY_ASSERT(RB_TYPE_P(arr, T_ARRAY));
     long size = RARRAY_LEN(arr);
     ID *ids = (ID *)ALLOC_N(ID, size + 1);
-    for (int i = 0; i < size; i++) {
+    for (long i = 0; i < size; i++) {
         VALUE sym = RARRAY_AREF(arr, i);
         ids[i] = SYM2ID(sym);
     }
@@ -2353,8 +2668,19 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
     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, ISEQ_IS_SIZE(body));
-    body->call_data = ZALLOC_N(struct rb_call_data, body->ci_size);
+    if (ISEQ_IS_SIZE(body)) {
+        body->is_entries = ZALLOC_N(union iseq_inline_storage_entry, ISEQ_IS_SIZE(body));
+    }
+    else {
+        body->is_entries = NULL;
+    }
+
+    if (body->ci_size) {
+        body->call_data = ZALLOC_N(struct rb_call_data, body->ci_size);
+    }
+    else {
+        body->call_data = NULL;
+    }
     ISEQ_COMPILE_DATA(iseq)->ci_index = 0;
 
     // Calculate the bitmask buffer size.
@@ -2365,16 +2691,21 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
     iseq_bits_t * mark_offset_bits;
     int code_size = code_index;
 
-    iseq_bits_t tmp[1] = {0};
     bool needs_bitmap = false;
 
     if (ISEQ_MBITS_BUFLEN(code_index) == 1) {
-        mark_offset_bits = tmp;
+        mark_offset_bits = &ISEQ_COMPILE_DATA(iseq)->mark_bits.single;
+        ISEQ_COMPILE_DATA(iseq)->is_single_mark_bit = true;
     }
     else {
         mark_offset_bits = ZALLOC_N(iseq_bits_t, ISEQ_MBITS_BUFLEN(code_index));
+        ISEQ_COMPILE_DATA(iseq)->mark_bits.list = mark_offset_bits;
+        ISEQ_COMPILE_DATA(iseq)->is_single_mark_bit = false;
     }
 
+    ISEQ_COMPILE_DATA(iseq)->iseq_encoded = (void *)generated_iseq;
+    ISEQ_COMPILE_DATA(iseq)->iseq_size = code_index;
+
     list = FIRST_ELEMENT(anchor);
     insns_info_index = code_index = sp = 0;
 
@@ -2419,6 +2750,7 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
 
                             rb_hash_rehash(map);
                             freeze_hide_obj(map);
+                            rb_ractor_make_shareable(map);
                             generated_iseq[code_index + 1 + j] = map;
                             ISEQ_MBITS_SET(mark_offset_bits, code_index + 1 + j);
                             RB_OBJ_WRITTEN(iseq, Qundef, map);
@@ -2462,7 +2794,17 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
                       case TS_IVC: /* inline ivar cache */
                         {
                             unsigned int ic_index = FIX2UINT(operands[j]);
-                            vm_ic_attr_index_initialize(((IVC)&body->is_entries[ic_index]), INVALID_SHAPE_ID);
+
+                            IVC cache = ((IVC)&body->is_entries[ic_index]);
+
+                            if (insn == BIN(setinstancevariable)) {
+                                cache->iv_set_name = SYM2ID(operands[j - 1]);
+                            }
+                            else {
+                                cache->iv_set_name = 0;
+                            }
+
+                            vm_ic_attr_index_initialize(cache, INVALID_SHAPE_ID);
                         }
                       case TS_ISE: /* inline storage entry: `once` insn */
                       case TS_ICVARC: /* inline cvar cache */
@@ -2479,11 +2821,11 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
 
                             break;
                         }
-                        case TS_CALLDATA:
+                      case TS_CALLDATA:
                         {
                             const struct rb_callinfo *source_ci = (const struct rb_callinfo *)operands[j];
+                            RUBY_ASSERT(ISEQ_COMPILE_DATA(iseq)->ci_index <= body->ci_size);
                             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;
@@ -2575,15 +2917,16 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
     body->iseq_size = code_index;
     body->stack_max = stack_max;
 
-    if (ISEQ_MBITS_BUFLEN(body->iseq_size) == 1) {
-        body->mark_bits.single = mark_offset_bits[0];
+    if (ISEQ_COMPILE_DATA(iseq)->is_single_mark_bit) {
+        body->mark_bits.single = ISEQ_COMPILE_DATA(iseq)->mark_bits.single;
     }
     else {
         if (needs_bitmap) {
             body->mark_bits.list = mark_offset_bits;
         }
         else {
-            body->mark_bits.list = 0;
+            body->mark_bits.list = NULL;
+            ISEQ_COMPILE_DATA(iseq)->mark_bits.list = NULL;
             ruby_xfree(mark_offset_bits);
         }
     }
@@ -2621,20 +2964,27 @@ iseq_set_exception_table(rb_iseq_t *iseq)
     struct iseq_catch_table_entry *entry;
 
     ISEQ_BODY(iseq)->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);
+
+    VALUE catch_table_ary = ISEQ_COMPILE_DATA(iseq)->catch_table_ary;
+    if (NIL_P(catch_table_ary)) return COMPILE_OK;
+    tlen = (int)RARRAY_LEN(catch_table_ary);
+    tptr = RARRAY_CONST_PTR(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]);
+            int pos;
+            ptr = RARRAY_CONST_PTR(tptr[i]);
             entry = UNALIGNED_MEMBER_PTR(table, entries[i]);
             entry->type = (enum rb_catch_type)(ptr[0] & 0xffff);
-            entry->start = label_get_position((LABEL *)(ptr[1] & ~1));
-            entry->end = label_get_position((LABEL *)(ptr[2] & ~1));
+            pos = label_get_position((LABEL *)(ptr[1] & ~1));
+            RUBY_ASSERT(pos >= 0);
+            entry->start = (unsigned int)pos;
+            pos = label_get_position((LABEL *)(ptr[2] & ~1));
+            RUBY_ASSERT(pos >= 0);
+            entry->end = (unsigned int)pos;
             entry->iseq = (rb_iseq_t *)ptr[3];
             RB_OBJ_WRITTEN(iseq, Qundef, entry->iseq);
 
@@ -2648,6 +2998,7 @@ iseq_set_exception_table(rb_iseq_t *iseq)
                 if (entry->type == CATCH_TYPE_RESCUE ||
                     entry->type == CATCH_TYPE_BREAK ||
                     entry->type == CATCH_TYPE_NEXT) {
+                    RUBY_ASSERT(entry->sp > 0);
                     entry->sp--;
                 }
             }
@@ -2659,6 +3010,8 @@ iseq_set_exception_table(rb_iseq_t *iseq)
         RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->catch_table_ary, 0); /* free */
     }
 
+    RB_GC_GUARD(catch_table_ary);
+
     return COMPILE_OK;
 }
 
@@ -2755,16 +3108,18 @@ unref_destination(INSN *iobj, int pos)
     if (!lobj->refcnt) ELEM_REMOVE(&lobj->link);
 }
 
-static void
+static bool
 replace_destination(INSN *dobj, INSN *nobj)
 {
     VALUE n = OPERAND_AT(nobj, 0);
     LABEL *dl = (LABEL *)OPERAND_AT(dobj, 0);
     LABEL *nl = (LABEL *)n;
+    if (dl == nl) return false;
     --dl->refcnt;
     ++nl->refcnt;
     OPERAND_AT(dobj, 0) = n;
     if (!dl->refcnt) ELEM_REMOVE(&dl->link);
+    return true;
 }
 
 static LABEL*
@@ -2797,7 +3152,6 @@ remove_unreachable_chunk(rb_iseq_t *iseq, LINK_ELEMENT *i)
                 break;
             }
             else if ((lab = find_destination((INSN *)i)) != 0) {
-                if (lab->unremovable) break;
                 unref_counts[lab->label_no]++;
             }
         }
@@ -2814,8 +3168,7 @@ remove_unreachable_chunk(rb_iseq_t *iseq, LINK_ELEMENT *i)
             /* do nothing */
         }
         else if (IS_ADJUST(i)) {
-            LABEL *dest = ((ADJUST *)i)->label;
-            if (dest && dest->unremovable) return 0;
+            return 0;
         }
         end = i;
     } while ((i = i->next) != 0);
@@ -2860,7 +3213,7 @@ iseq_pop_newarray(rb_iseq_t *iseq, INSN *iobj)
 static int
 is_frozen_putstring(INSN *insn, VALUE *op)
 {
-    if (IS_INSN_ID(insn, putstring)) {
+    if (IS_INSN_ID(insn, putstring) || IS_INSN_ID(insn, putchilledstring)) {
         *op = OPERAND_AT(insn, 0);
         return 1;
     }
@@ -2872,6 +3225,25 @@ is_frozen_putstring(INSN *insn, VALUE *op)
 }
 
 static int
+insn_has_label_before(LINK_ELEMENT *elem)
+{
+    LINK_ELEMENT *prev = elem->prev;
+    while (prev) {
+        if (prev->type == ISEQ_ELEMENT_LABEL) {
+            LABEL *label = (LABEL *)prev;
+            if (label->refcnt > 0) {
+                return 1;
+            }
+        }
+        else if (prev->type == ISEQ_ELEMENT_INSN) {
+            break;
+        }
+        prev = prev->prev;
+    }
+    return 0;
+}
+
+static int
 optimize_checktype(rb_iseq_t *iseq, INSN *iobj)
 {
     /*
@@ -2902,6 +3274,7 @@ optimize_checktype(rb_iseq_t *iseq, INSN *iobj)
 
     switch (INSN_OF(iobj)) {
       case BIN(putstring):
+      case BIN(putchilledstring):
         type = INT2FIX(T_STRING);
         break;
       case BIN(putnil):
@@ -2942,7 +3315,6 @@ optimize_checktype(rb_iseq_t *iseq, INSN *iobj)
     }
     line = ciobj->insn_info.line_no;
     node_id = ciobj->insn_info.node_id;
-    NODE dummy_line_node = generate_dummy_line_node(line, node_id);
     if (!dest) {
         if (niobj->link.next && IS_LABEL(niobj->link.next)) {
             dest = (LABEL *)niobj->link.next; /* reuse label */
@@ -2952,9 +3324,9 @@ optimize_checktype(rb_iseq_t *iseq, INSN *iobj)
             ELEM_INSERT_NEXT(&niobj->link, &dest->link);
         }
     }
-    INSERT_AFTER_INSN1(iobj, &dummy_line_node, jump, dest);
+    INSERT_AFTER_INSN1(iobj, line, node_id, jump, dest);
     LABEL_REF(dest);
-    if (!dup) INSERT_AFTER_INSN(iobj, &dummy_line_node, pop);
+    if (!dup) INSERT_AFTER_INSN(iobj, line, node_id, pop);
     return TRUE;
 }
 
@@ -2980,6 +3352,8 @@ ci_argc_set(const rb_iseq_t *iseq, const struct rb_callinfo *ci, int argc)
     return nci;
 }
 
+#define vm_ci_simple(ci) (vm_ci_flag(ci) & VM_CALL_ARGS_SIMPLE)
+
 static int
 iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcallopt)
 {
@@ -3018,9 +3392,10 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
              *   => in this case, first jump instruction should jump to
              *      LABEL2 directly
              */
-            replace_destination(iobj, diobj);
-            remove_unreachable_chunk(iseq, iobj->link.next);
-            goto again;
+            if (replace_destination(iobj, diobj)) {
+                remove_unreachable_chunk(iseq, iobj->link.next);
+                goto again;
+            }
         }
         else if (IS_INSN_ID(diobj, leave)) {
             /*
@@ -3065,8 +3440,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
                  */
                 piobj->insn_id = (IS_INSN_ID(piobj, branchif))
                   ? BIN(branchunless) : BIN(branchif);
-                replace_destination(piobj, iobj);
-                if (refcnt <= 1) {
+                if (replace_destination(piobj, iobj) && refcnt <= 1) {
                     ELEM_REMOVE(&iobj->link);
                 }
                 else {
@@ -3088,8 +3462,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
                  *   pop
                  *   jump L1
                  */
-                NODE dummy_line_node = generate_dummy_line_node(iobj->insn_info.line_no, iobj->insn_info.node_id);
-                INSN *popiobj = new_insn_core(iseq, &dummy_line_node, BIN(pop), 0, 0);
+                INSN *popiobj = new_insn_core(iseq, iobj->insn_info.line_no, iobj->insn_info.node_id, BIN(pop), 0, 0);
                 ELEM_REPLACE(&piobj->link, &popiobj->link);
             }
         }
@@ -3115,9 +3488,10 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
         if ((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)) {
+                is_frozen_putstring(beg, &str_beg) &&
+                !(insn_has_label_before(&beg->link) || insn_has_label_before(&end->link))) {
             int excl = FIX2INT(OPERAND_AT(range, 0));
-            VALUE lit_range = rb_range_new(str_beg, str_end, excl);
+            VALUE lit_range = RB_OBJ_SET_SHAREABLE(rb_range_new(str_beg, str_end, excl));
 
             ELEM_REMOVE(&beg->link);
             ELEM_REMOVE(&end->link);
@@ -3134,19 +3508,102 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
     /*
      *  ...
      *  duparray [...]
-     *  concatarray
+     *  concatarray | concattoarray
      * =>
      *  ...
      *  putobject [...]
-     *  concatarray
+     *  concatarray | concattoarray
      */
     if (IS_INSN_ID(iobj, duparray)) {
         LINK_ELEMENT *next = iobj->link.next;
-        if (IS_INSN(next) && IS_INSN_ID(next, concatarray)) {
+        if (IS_INSN(next) && (IS_INSN_ID(next, concatarray) || IS_INSN_ID(next, concattoarray))) {
             iobj->insn_id = BIN(putobject);
         }
     }
 
+    /*
+     * duparray [...]
+     * send     <calldata!mid:freeze, argc:0, ARGS_SIMPLE>, nil
+     * =>
+     * opt_ary_freeze [...], <calldata!mid:freeze, argc:0, ARGS_SIMPLE>
+     */
+    if (IS_INSN_ID(iobj, duparray)) {
+        LINK_ELEMENT *next = iobj->link.next;
+        if (IS_INSN(next) && (IS_INSN_ID(next, send))) {
+            const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(next, 0);
+            const rb_iseq_t *blockiseq = (rb_iseq_t *)OPERAND_AT(next, 1);
+
+            if (vm_ci_simple(ci) && vm_ci_argc(ci) == 0 && blockiseq == NULL && vm_ci_mid(ci) == idFreeze) {
+                VALUE ary = iobj->operands[0];
+                rb_obj_reveal(ary, rb_cArray);
+
+                insn_replace_with_operands(iseq, iobj, BIN(opt_ary_freeze), 2, ary, (VALUE)ci);
+                ELEM_REMOVE(next);
+            }
+        }
+    }
+
+    /*
+     * duphash {...}
+     * send     <calldata!mid:freeze, argc:0, ARGS_SIMPLE>, nil
+     * =>
+     * opt_hash_freeze {...}, <calldata!mid:freeze, argc:0, ARGS_SIMPLE>
+     */
+    if (IS_INSN_ID(iobj, duphash)) {
+        LINK_ELEMENT *next = iobj->link.next;
+        if (IS_INSN(next) && (IS_INSN_ID(next, send))) {
+            const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(next, 0);
+            const rb_iseq_t *blockiseq = (rb_iseq_t *)OPERAND_AT(next, 1);
+
+            if (vm_ci_simple(ci) && vm_ci_argc(ci) == 0 && blockiseq == NULL && vm_ci_mid(ci) == idFreeze) {
+                VALUE hash = iobj->operands[0];
+                rb_obj_reveal(hash, rb_cHash);
+                RB_OBJ_SET_SHAREABLE(hash);
+
+                insn_replace_with_operands(iseq, iobj, BIN(opt_hash_freeze), 2, hash, (VALUE)ci);
+                ELEM_REMOVE(next);
+            }
+        }
+    }
+
+    /*
+     * newarray 0
+     * send     <calldata!mid:freeze, argc:0, ARGS_SIMPLE>, nil
+     * =>
+     * opt_ary_freeze [], <calldata!mid:freeze, argc:0, ARGS_SIMPLE>
+     */
+    if (IS_INSN_ID(iobj, newarray) && iobj->operands[0] == INT2FIX(0)) {
+        LINK_ELEMENT *next = iobj->link.next;
+        if (IS_INSN(next) && (IS_INSN_ID(next, send))) {
+            const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(next, 0);
+            const rb_iseq_t *blockiseq = (rb_iseq_t *)OPERAND_AT(next, 1);
+
+            if (vm_ci_simple(ci) && vm_ci_argc(ci) == 0 && blockiseq == NULL && vm_ci_mid(ci) == idFreeze) {
+                insn_replace_with_operands(iseq, iobj, BIN(opt_ary_freeze), 2, rb_cArray_empty_frozen, (VALUE)ci);
+                ELEM_REMOVE(next);
+            }
+        }
+    }
+
+    /*
+     * newhash 0
+     * send     <calldata!mid:freeze, argc:0, ARGS_SIMPLE>, nil
+     * =>
+     * opt_hash_freeze {}, <calldata!mid:freeze, argc:0, ARGS_SIMPLE>
+     */
+    if (IS_INSN_ID(iobj, newhash) && iobj->operands[0] == INT2FIX(0)) {
+        LINK_ELEMENT *next = iobj->link.next;
+        if (IS_INSN(next) && (IS_INSN_ID(next, send))) {
+            const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(next, 0);
+            const rb_iseq_t *blockiseq = (rb_iseq_t *)OPERAND_AT(next, 1);
+
+            if (vm_ci_simple(ci) && vm_ci_argc(ci) == 0 && blockiseq == NULL && vm_ci_mid(ci) == idFreeze) {
+                insn_replace_with_operands(iseq, iobj, BIN(opt_hash_freeze), 2, rb_cHash_empty_frozen, (VALUE)ci);
+                ELEM_REMOVE(next);
+            }
+        }
+    }
+
     if (IS_INSN_ID(iobj, branchif) ||
         IS_INSN_ID(iobj, branchnil) ||
         IS_INSN_ID(iobj, branchunless)) {
@@ -3196,7 +3653,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
 
             for (;;) {
                 if (IS_INSN(&nobj->link) && IS_INSN_ID(nobj, jump)) {
-                    replace_destination(iobj, nobj);
+                    if (!replace_destination(iobj, nobj)) break;
                 }
                 else if (prev_dup && IS_INSN_ID(nobj, dup) &&
                          !!(nobj = (INSN *)nobj->link.next) &&
@@ -3217,7 +3674,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
                      *   dup
                      *   if L2
                      */
-                    replace_destination(iobj, nobj);
+                    if (!replace_destination(iobj, nobj)) break;
                 }
                 else if (pobj) {
                     /*
@@ -3268,14 +3725,12 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
                         ELEM_REMOVE(iobj->link.prev);
                     }
                     else if (!iseq_pop_newarray(iseq, pobj)) {
-                        NODE dummy_line_node = generate_dummy_line_node(pobj->insn_info.line_no, pobj->insn_info.node_id);
-                        pobj = new_insn_core(iseq, &dummy_line_node, BIN(pop), 0, NULL);
+                        pobj = new_insn_core(iseq, pobj->insn_info.line_no, pobj->insn_info.node_id, BIN(pop), 0, NULL);
                         ELEM_INSERT_PREV(&iobj->link, &pobj->link);
                     }
                     if (cond) {
                         if (prev_dup) {
-                            NODE dummy_line_node = generate_dummy_line_node(pobj->insn_info.line_no, pobj->insn_info.node_id);
-                            pobj = new_insn_core(iseq, &dummy_line_node, BIN(putnil), 0, NULL);
+                            pobj = new_insn_core(iseq, pobj->insn_info.line_no, pobj->insn_info.node_id, BIN(putnil), 0, NULL);
                             ELEM_INSERT_NEXT(&iobj->link, &pobj->link);
                         }
                         iobj->insn_id = BIN(jump);
@@ -3305,11 +3760,12 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
             enum ruby_vminsn_type previ = ((INSN *)prev)->insn_id;
             if (previ == BIN(putobject) || previ == BIN(putnil) ||
                 previ == BIN(putself) || previ == BIN(putstring) ||
+                previ == BIN(putchilledstring) ||
                 previ == BIN(dup) ||
                 previ == BIN(getlocal) ||
                 previ == BIN(getblockparam) ||
                 previ == BIN(getblockparamproxy) ||
-                /* getinstancevariable may issue a warning */
+                previ == BIN(getinstancevariable) ||
                 previ == BIN(duparray)) {
                 /* just push operand or static value and pop soon, no
                  * side effects */
@@ -3321,8 +3777,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
             }
             else if (previ == BIN(concatarray)) {
                 INSN *piobj = (INSN *)prev;
-                NODE dummy_line_node = generate_dummy_line_node(piobj->insn_info.line_no, piobj->insn_info.node_id);
-                INSERT_BEFORE_INSN1(piobj, &dummy_line_node, splatarray, Qfalse);
+                INSERT_BEFORE_INSN1(piobj, piobj->insn_info.line_no, piobj->insn_info.node_id, splatarray, Qfalse);
                 INSN_OF(piobj) = BIN(pop);
             }
             else if (previ == BIN(concatstrings)) {
@@ -3339,7 +3794,6 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
 
     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) {
@@ -3388,7 +3842,6 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
                 }
             }
             else {
-                NODE dummy_line_node = generate_dummy_line_node(iobj->insn_info.line_no, iobj->insn_info.node_id);
                 long diff = FIX2LONG(op1) - FIX2LONG(op2);
                 INSN_OF(iobj) = BIN(opt_reverse);
                 OPERAND_AT(iobj, 0) = OPERAND_AT(next, 0);
@@ -3402,7 +3855,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
                      *  opt_reverse Y
                      */
                     for (; diff > 0; diff--) {
-                        INSERT_BEFORE_INSN(iobj, &dummy_line_node, pop);
+                        INSERT_BEFORE_INSN(iobj, iobj->insn_info.line_no, iobj->insn_info.node_id, pop);
                     }
                 }
                 else { /* (op1 < op2) */
@@ -3414,7 +3867,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
                      *  opt_reverse Y
                      */
                     for (; diff < 0; diff++) {
-                        INSERT_BEFORE_INSN(iobj, &dummy_line_node, putnil);
+                        INSERT_BEFORE_INSN(iobj, iobj->insn_info.line_no, iobj->insn_info.node_id, putnil);
                     }
                 }
             }
@@ -3449,7 +3902,7 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
         }
     }
 
-    if (IS_INSN_ID(iobj, putstring) ||
+    if (IS_INSN_ID(iobj, putstring) || IS_INSN_ID(iobj, putchilledstring) ||
         (IS_INSN_ID(iobj, putobject) && RB_TYPE_P(OPERAND_AT(iobj, 0), T_STRING))) {
         /*
          *  putstring ""
@@ -3465,6 +3918,27 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
             }
             ELEM_REMOVE(&iobj->link);
         }
+        if (IS_NEXT_INSN_ID(&iobj->link, toregexp)) {
+            INSN *next = (INSN *)iobj->link.next;
+            if (OPERAND_AT(next, 1) == INT2FIX(1)) {
+                VALUE src = OPERAND_AT(iobj, 0);
+                int opt = (int)FIX2LONG(OPERAND_AT(next, 0));
+                VALUE path = rb_iseq_path(iseq);
+                int line = iobj->insn_info.line_no;
+                VALUE errinfo = rb_errinfo();
+                VALUE re = rb_reg_compile(src, opt, RSTRING_PTR(path), line);
+                if (NIL_P(re)) {
+                    VALUE message = rb_attr_get(rb_errinfo(), idMesg);
+                    rb_set_errinfo(errinfo);
+                    COMPILE_ERROR(iseq, line, "%" PRIsVALUE, message);
+                }
+                else {
+                    RB_OBJ_SET_SHAREABLE(re);
+                }
+                RB_OBJ_WRITE(iseq, &OPERAND_AT(iobj, 0), re);
+                ELEM_REMOVE(iobj->link.next);
+            }
+        }
     }
 
     if (IS_INSN_ID(iobj, concatstrings)) {
@@ -3502,8 +3976,6 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
 
     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 ...
@@ -3636,6 +4108,10 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
         if (IS_TRACE(iobj->link.next)) {
             if (IS_NEXT_INSN_ID(iobj->link.next, leave)) {
                 iobj->insn_id = BIN(opt_invokebuiltin_delegate_leave);
+                const struct rb_builtin_function *bf = (const struct rb_builtin_function *)iobj->operands[0];
+                if (iobj == (INSN *)list && bf->argc == 0 && (ISEQ_BODY(iseq)->builtin_attrs & BUILTIN_ATTR_LEAF)) {
+                    ISEQ_BODY(iseq)->builtin_attrs |= BUILTIN_ATTR_SINGLE_NOARG_LEAF;
+                }
             }
         }
     }
@@ -3653,23 +4129,80 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
         }
     }
 
+    if (IS_INSN_ID(iobj, splatarray) && OPERAND_AT(iobj, 0) == false) {
+        LINK_ELEMENT *niobj = &iobj->link;
+        if (IS_NEXT_INSN_ID(niobj, duphash)) {
+            niobj = niobj->next;
+            LINK_ELEMENT *siobj;
+            unsigned int set_flags = 0, unset_flags = 0;
+
+            /*
+            * Eliminate hash allocation for f(*a, kw: 1)
+            *
+            *  splatarray false
+            *  duphash
+            *  send ARGS_SPLAT|KW_SPLAT|KW_SPLAT_MUT and not ARGS_BLOCKARG
+            * =>
+            *  splatarray false
+            *  putobject
+            *  send ARGS_SPLAT|KW_SPLAT
+            */
+            if (IS_NEXT_INSN_ID(niobj, send)) {
+                siobj = niobj->next;
+                set_flags = VM_CALL_ARGS_SPLAT|VM_CALL_KW_SPLAT|VM_CALL_KW_SPLAT_MUT;
+                unset_flags = VM_CALL_ARGS_BLOCKARG;
+            }
+            /*
+            * Eliminate hash allocation for f(*a, kw: 1, &{arg,lvar,@iv})
+            *
+            *  splatarray false
+            *  duphash
+            *  getlocal / getinstancevariable / getblockparamproxy
+            *  send ARGS_SPLAT|KW_SPLAT|KW_SPLAT_MUT|ARGS_BLOCKARG
+            * =>
+            *  splatarray false
+            *  putobject
+            *  getlocal / getinstancevariable / getblockparamproxy
+            *  send ARGS_SPLAT|KW_SPLAT|ARGS_BLOCKARG
+            */
+            else if ((IS_NEXT_INSN_ID(niobj, getlocal) || IS_NEXT_INSN_ID(niobj, getinstancevariable) ||
+                        IS_NEXT_INSN_ID(niobj, getblockparamproxy)) && (IS_NEXT_INSN_ID(niobj->next, send))) {
+                siobj = niobj->next->next;
+                set_flags = VM_CALL_ARGS_SPLAT|VM_CALL_KW_SPLAT|VM_CALL_KW_SPLAT_MUT|VM_CALL_ARGS_BLOCKARG;
+            }
+
+            if (set_flags) {
+                const struct rb_callinfo *ci = (const struct rb_callinfo *)OPERAND_AT(siobj, 0);
+                unsigned int flags = vm_ci_flag(ci);
+                if ((flags & set_flags) == set_flags && !(flags & unset_flags)) {
+                    ((INSN*)niobj)->insn_id = BIN(putobject);
+                    RB_OBJ_WRITE(iseq, &OPERAND_AT(niobj, 0), RB_OBJ_SET_SHAREABLE(rb_hash_freeze(rb_hash_resurrect(OPERAND_AT(niobj, 0)))));
+
+                    const struct rb_callinfo *nci = vm_ci_new(vm_ci_mid(ci),
+                        flags & ~VM_CALL_KW_SPLAT_MUT, vm_ci_argc(ci), vm_ci_kwarg(ci));
+                    RB_OBJ_WRITTEN(iseq, ci, nci);
+                    OPERAND_AT(siobj, 0) = (VALUE)nci;
+                }
+            }
+        }
+    }
+
     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;
-    iobj->insn_info.events |= RUBY_EVENT_C_CALL | RUBY_EVENT_C_RETURN;
-
     if (insn_id == BIN(opt_neq)) {
         VALUE original_ci = iobj->operands[0];
-        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] = original_ci;
+        VALUE new_ci = (VALUE)new_callinfo(iseq, idEq, 1, 0, NULL, FALSE);
+        insn_replace_with_operands(iseq, iobj, insn_id, 2, new_ci, original_ci);
+    }
+    else {
+        iobj->insn_id = insn_id;
+        iobj->operand_size = insn_len(insn_id) - 1;
     }
+    iobj->insn_info.events |= RUBY_EVENT_C_CALL | RUBY_EVENT_C_RETURN;
 
     return COMPILE_OK;
 }
@@ -3680,32 +4213,145 @@ 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
+         *   [a, b, ...].max/min -> a, b, c, opt_newarray_send 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) {
+            if (vm_ci_simple(ci) && vm_ci_argc(ci) == 0) {
+                VALUE method = INT2FIX(0);
                 switch (vm_ci_mid(ci)) {
                   case idMax:
-                    iobj->insn_id = BIN(opt_newarray_max);
-                    ELEM_REMOVE(&niobj->link);
-                    return COMPILE_OK;
+                      method = INT2FIX(VM_OPT_NEWARRAY_SEND_MAX);
+                      break;
                   case idMin:
-                    iobj->insn_id = BIN(opt_newarray_min);
+                      method = INT2FIX(VM_OPT_NEWARRAY_SEND_MIN);
+                      break;
+                  case idHash:
+                      method = INT2FIX(VM_OPT_NEWARRAY_SEND_HASH);
+                      break;
+                }
+
+                if (method != INT2FIX(0)) {
+                    VALUE num = iobj->operands[0];
+                    insn_replace_with_operands(iseq, iobj, BIN(opt_newarray_send), 2, num, method);
                     ELEM_REMOVE(&niobj->link);
                     return COMPILE_OK;
                 }
             }
         }
+        else if ((IS_INSN_ID(niobj, putstring) || IS_INSN_ID(niobj, putchilledstring) ||
+                  (IS_INSN_ID(niobj, putobject) && RB_TYPE_P(OPERAND_AT(niobj, 0), T_STRING))) &&
+                 IS_NEXT_INSN_ID(&niobj->link, send)) {
+            const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT((INSN *)niobj->link.next, 0);
+            if (vm_ci_simple(ci) && vm_ci_argc(ci) == 1 && vm_ci_mid(ci) == idPack) {
+                VALUE num = iobj->operands[0];
+                insn_replace_with_operands(iseq, iobj, BIN(opt_newarray_send), 2, FIXNUM_INC(num, 1), INT2FIX(VM_OPT_NEWARRAY_SEND_PACK));
+                ELEM_REMOVE(&iobj->link);
+                ELEM_REMOVE(niobj->link.next);
+                ELEM_INSERT_NEXT(&niobj->link, &iobj->link);
+                return COMPILE_OK;
+            }
+        }
+        // newarray n, putchilledstring "E", getlocal b, send :pack with {buffer: b}
+        // -> putchilledstring "E", getlocal b, opt_newarray_send n+2, :pack, :buffer
+        else if ((IS_INSN_ID(niobj, putstring) || IS_INSN_ID(niobj, putchilledstring) ||
+                  (IS_INSN_ID(niobj, putobject) && RB_TYPE_P(OPERAND_AT(niobj, 0), T_STRING))) &&
+                 IS_NEXT_INSN_ID(&niobj->link, getlocal) &&
+                 (niobj->link.next && IS_NEXT_INSN_ID(niobj->link.next, send))) {
+            const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT((INSN *)(niobj->link.next)->next, 0);
+            const struct rb_callinfo_kwarg *kwarg = vm_ci_kwarg(ci);
+            if (vm_ci_mid(ci) == idPack && vm_ci_argc(ci) == 2 &&
+                    (kwarg && kwarg->keyword_len == 1 && kwarg->keywords[0] == rb_id2sym(idBuffer))) {
+                VALUE num = iobj->operands[0];
+                insn_replace_with_operands(iseq, iobj, BIN(opt_newarray_send), 2, FIXNUM_INC(num, 2), INT2FIX(VM_OPT_NEWARRAY_SEND_PACK_BUFFER));
+                // Remove the "send" insn.
+                ELEM_REMOVE((niobj->link.next)->next);
+                // Remove the modified insn from its original "newarray" position...
+                ELEM_REMOVE(&iobj->link);
+                // and insert it after the buffer insn.
+                ELEM_INSERT_NEXT(niobj->link.next, &iobj->link);
+                return COMPILE_OK;
+            }
+        }
+
+        // Break the "else if" chain since some prior checks abort after sub-ifs.
+        // We already found "newarray".  To match `[...].include?(arg)` we look for
+        // the instruction(s) representing the argument followed by a "send".
+        if ((IS_INSN_ID(niobj, putstring) || IS_INSN_ID(niobj, putchilledstring) ||
+                  IS_INSN_ID(niobj, putobject) ||
+                  IS_INSN_ID(niobj, putself) ||
+                  IS_INSN_ID(niobj, getlocal) ||
+                  IS_INSN_ID(niobj, getinstancevariable)) &&
+                 IS_NEXT_INSN_ID(&niobj->link, send)) {
+
+            LINK_ELEMENT *sendobj = &(niobj->link); // Below we call ->next;
+            const struct rb_callinfo *ci;
+            // Allow any number (0 or more) of simple method calls on the argument
+            // (as in `[...].include?(arg.method1.method2)`.
+            do {
+                sendobj = sendobj->next;
+                ci = (struct rb_callinfo *)OPERAND_AT(sendobj, 0);
+            } while (vm_ci_simple(ci) && vm_ci_argc(ci) == 0 && IS_NEXT_INSN_ID(sendobj, send));
+
+            // If this send is for .include? with one arg we can do our opt.
+            if (vm_ci_simple(ci) && vm_ci_argc(ci) == 1 && vm_ci_mid(ci) == idIncludeP) {
+                VALUE num = iobj->operands[0];
+                INSN *sendins = (INSN *)sendobj;
+                insn_replace_with_operands(iseq, sendins, BIN(opt_newarray_send), 2, FIXNUM_INC(num, 1), INT2FIX(VM_OPT_NEWARRAY_SEND_INCLUDE_P));
+                // Remove the original "newarray" insn.
+                ELEM_REMOVE(&iobj->link);
+                return COMPILE_OK;
+            }
+        }
     }
 
+    /*
+     * duparray [...]
+     * some insn for the arg...
+     * send     <calldata!mid:include?, argc:1, ARGS_SIMPLE>, nil
+     * =>
+     * arg insn...
+     * opt_duparray_send [...], :include?, 1
+     */
+    if (IS_INSN_ID(iobj, duparray) && iobj->link.next && IS_INSN(iobj->link.next)) {
+        INSN *niobj = (INSN *)iobj->link.next;
+        if ((IS_INSN_ID(niobj, getlocal) ||
+             IS_INSN_ID(niobj, getinstancevariable) ||
+             IS_INSN_ID(niobj, putself)) &&
+            IS_NEXT_INSN_ID(&niobj->link, send)) {
+
+            LINK_ELEMENT *sendobj = &(niobj->link); // Below we call ->next;
+            const struct rb_callinfo *ci;
+            // Allow any number (0 or more) of simple method calls on the argument
+            // (as in `[...].include?(arg.method1.method2)`.
+            do {
+                sendobj = sendobj->next;
+                ci = (struct rb_callinfo *)OPERAND_AT(sendobj, 0);
+            } while (vm_ci_simple(ci) && vm_ci_argc(ci) == 0 && IS_NEXT_INSN_ID(sendobj, send));
+
+            if (vm_ci_simple(ci) && vm_ci_argc(ci) == 1 && vm_ci_mid(ci) == idIncludeP) {
+                // Move the array arg from duparray to opt_duparray_send.
+                VALUE ary = iobj->operands[0];
+                rb_obj_reveal(ary, rb_cArray);
+
+                INSN *sendins = (INSN *)sendobj;
+                insn_replace_with_operands(iseq, sendins, BIN(opt_duparray_send), 3, ary, rb_id2sym(idIncludeP), INT2FIX(1));
+
+                // Remove the duparray insn.
+                ELEM_REMOVE(&iobj->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) {
+        if (vm_ci_simple(ci)) {
             switch (vm_ci_argc(ci)) {
               case 0:
                 switch (vm_ci_mid(ci)) {
@@ -3745,7 +4391,7 @@ iseq_specialized_instruction(rb_iseq_t *iseq, INSN *iobj)
             }
         }
 
-        if ((vm_ci_flag(ci) & VM_CALL_ARGS_BLOCKARG) == 0 && blockiseq == NULL) {
+        if ((vm_ci_flag(ci) & (VM_CALL_ARGS_BLOCKARG | VM_CALL_FORWARDING)) == 0 && blockiseq == NULL) {
             iobj->insn_id = BIN(opt_send_without_block);
             iobj->operand_size = insn_len(iobj->insn_id) - 1;
         }
@@ -3787,9 +4433,18 @@ iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
     list = FIRST_ELEMENT(anchor);
 
     int do_block_optimization = 0;
+    LABEL * block_loop_label = NULL;
 
-    if (ISEQ_BODY(iseq)->type == ISEQ_TYPE_BLOCK && !ISEQ_BODY(iseq)->catch_except_p) {
+    // If we're optimizing a block
+    if (ISEQ_BODY(iseq)->type == ISEQ_TYPE_BLOCK) {
         do_block_optimization = 1;
+
+        // If the block starts with a nop and a label,
+        // record the label so we can detect if it's a jump target
+        LINK_ELEMENT * le = FIRST_ELEMENT(anchor)->next;
+        if (IS_INSN(le) && IS_INSN_ID((INSN *)le, nop) && IS_LABEL(le->next)) {
+            block_loop_label = (LABEL *)le->next;
+        }
     }
 
     while (list) {
@@ -3806,9 +4461,27 @@ iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
 
             if (do_block_optimization) {
                 INSN * item = (INSN *)list;
-                if (IS_INSN_ID(item, jump)) {
+                // Give up if there is a throw
+                if (IS_INSN_ID(item, throw)) {
                     do_block_optimization = 0;
                 }
+                else {
+                    // If the instruction has a jump target, check if the
+                    // jump target is the block loop label
+                    const char *types = insn_op_types(item->insn_id);
+                    for (int j = 0; types[j]; j++) {
+                        if (types[j] == TS_OFFSET) {
+                            // If the jump target is equal to the block loop
+                            // label, then we can't do the optimization because
+                            // the leading `nop` instruction fires the block
+                            // entry tracepoint
+                            LABEL * target = (LABEL *)OPERAND_AT(item, j);
+                            if (target == block_loop_label) {
+                                do_block_optimization = 0;
+                            }
+                        }
+                    }
+                }
             }
         }
         if (IS_LABEL(list)) {
@@ -3865,8 +4538,7 @@ new_unified_insn(rb_iseq_t *iseq,
         list = list->next;
     }
 
-    NODE dummy_line_node = generate_dummy_line_node(iobj->insn_info.line_no, iobj->insn_info.node_id);
-    return new_insn_core(iseq, &dummy_line_node, insn_id, argc, operands);
+    return new_insn_core(iseq, iobj->insn_info.line_no, iobj->insn_info.node_id, insn_id, argc, operands);
 }
 #endif
 
@@ -3926,231 +4598,114 @@ iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
     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)
+all_string_result_p(const NODE *node)
 {
-    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;
+    if (!node) return FALSE;
+    switch (nd_type(node)) {
+      case NODE_STR: case NODE_DSTR: case NODE_FILE:
+        return TRUE;
+      case NODE_IF: case NODE_UNLESS:
+        if (!RNODE_IF(node)->nd_body || !RNODE_IF(node)->nd_else) return FALSE;
+        if (all_string_result_p(RNODE_IF(node)->nd_body))
+            return all_string_result_p(RNODE_IF(node)->nd_else);
+        return FALSE;
+      case NODE_AND: case NODE_OR:
+        if (!RNODE_AND(node)->nd_2nd)
+            return all_string_result_p(RNODE_AND(node)->nd_1st);
+        if (!all_string_result_p(RNODE_AND(node)->nd_1st))
+            return FALSE;
+        return all_string_result_p(RNODE_AND(node)->nd_2nd);
+      default:
+        return FALSE;
     }
-
-    return nstate;
 }
 
+struct dstr_ctxt {
+    rb_iseq_t *const iseq;
+    LINK_ANCHOR *const ret;
+    VALUE lit;
+    const NODE *lit_node;
+    int cnt;
+    int dregx;
+};
+
 static int
-label_set_sc_state(LABEL *lobj, int state)
+append_dstr_fragment(struct dstr_ctxt *args, const NODE *const node, rb_parser_string_t *str)
 {
-    if (lobj->sc_state != 0) {
-        if (lobj->sc_state != state) {
-            state = lobj->sc_state;
+    VALUE s = rb_str_new_mutable_parser_string(str);
+    if (args->dregx) {
+        VALUE error = rb_reg_check_preprocess(s);
+        if (!NIL_P(error)) {
+            COMPILE_ERROR(args->iseq, nd_line(node), "%" PRIsVALUE, error);
+            return COMPILE_NG;
         }
     }
-    else {
-        lobj->sc_state = state;
+    if (NIL_P(args->lit)) {
+        args->lit = s;
+        args->lit_node = node;
     }
-
-    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) {
-                            NODE dummy_line_node = generate_dummy_line_node(0, -1);
-                            INSN *rpobj =
-                                new_insn_body(iseq, &dummy_line_node, 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;
+    else {
+        rb_str_buf_append(args->lit, s);
     }
-#endif
     return COMPILE_OK;
 }
 
-static int
-all_string_result_p(const NODE *node)
+static void
+flush_dstr_fragment(struct dstr_ctxt *args)
 {
-    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;
+    if (!NIL_P(args->lit)) {
+        rb_iseq_t *iseq = args->iseq;
+        VALUE lit = args->lit;
+        args->lit = Qnil;
+        lit = rb_fstring(lit);
+        ADD_INSN1(args->ret, args->lit_node, putobject, lit);
+        RB_OBJ_WRITTEN(args->iseq, Qundef, lit);
+        args->cnt++;
     }
 }
 
 static int
-compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int *cntp)
+compile_dstr_fragments_0(struct dstr_ctxt *args, const NODE *const node)
 {
-    const NODE *list = node->nd_next;
-    VALUE lit = node->nd_lit;
-    LINK_ELEMENT *first_lit = 0;
-    int cnt = 0;
+    const struct RNode_LIST *list = RNODE_DSTR(node)->nd_next;
+    rb_parser_string_t *str = RNODE_DSTR(node)->string;
 
-    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, node, putobject, lit);
-        RB_OBJ_WRITTEN(iseq, Qundef, lit);
-        if (RSTRING_LEN(lit) == 0) first_lit = LAST_ELEMENT(ret);
+    if (str) {
+        CHECK(append_dstr_fragment(args, node, str));
     }
 
     while (list) {
         const NODE *const head = list->nd_head;
         if (nd_type_p(head, NODE_STR)) {
-            lit = rb_fstring(head->nd_lit);
-            ADD_INSN1(ret, head, putobject, lit);
-            RB_OBJ_WRITTEN(iseq, Qundef, lit);
-            lit = Qnil;
+            CHECK(append_dstr_fragment(args, node, RNODE_STR(head)->string));
+        }
+        else if (nd_type_p(head, NODE_DSTR)) {
+            CHECK(compile_dstr_fragments_0(args, head));
         }
         else {
-            CHECK(COMPILE(ret, "each string", head));
+            flush_dstr_fragment(args);
+            rb_iseq_t *iseq = args->iseq;
+            CHECK(COMPILE(args->ret, "each string", head));
+            args->cnt++;
         }
-        cnt++;
-        list = list->nd_next;
+        list = (struct RNode_LIST *)list->nd_next;
     }
-    if (NIL_P(lit) && first_lit) {
-        ELEM_REMOVE(first_lit);
-        --cnt;
-    }
-    *cntp = cnt;
+    return COMPILE_OK;
+}
+
+static int
+compile_dstr_fragments(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int *cntp, int dregx)
+{
+    struct dstr_ctxt args = {
+        .iseq = iseq, .ret = ret,
+        .lit = Qnil, .lit_node = NULL,
+        .cnt = 0, .dregx = dregx,
+    };
+    CHECK(compile_dstr_fragments_0(&args, node));
+    flush_dstr_fragment(&args);
+
+    *cntp = args.cnt;
 
     return COMPILE_OK;
 }
@@ -4159,12 +4714,12 @@ static int
 compile_block(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int popped)
 {
     while (node && nd_type_p(node, NODE_BLOCK)) {
-        CHECK(COMPILE_(ret, "BLOCK body", node->nd_head,
-                       (node->nd_next ? 1 : popped)));
-        node = node->nd_next;
+        CHECK(COMPILE_(ret, "BLOCK body", RNODE_BLOCK(node)->nd_head,
+                       (RNODE_BLOCK(node)->nd_next ? 1 : popped)));
+        node = RNODE_BLOCK(node)->nd_next;
     }
     if (node) {
-        CHECK(COMPILE_(ret, "BLOCK next", node->nd_next, popped));
+        CHECK(COMPILE_(ret, "BLOCK next", RNODE_BLOCK(node)->nd_next, popped));
     }
     return COMPILE_OK;
 }
@@ -4173,24 +4728,43 @@ static int
 compile_dstr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
 {
     int cnt;
-    if (!node->nd_next) {
-        VALUE lit = rb_fstring(node->nd_lit);
+    if (!RNODE_DSTR(node)->nd_next) {
+        VALUE lit = rb_node_dstr_string_val(node);
         ADD_INSN1(ret, node, putstring, lit);
+        RB_OBJ_SET_SHAREABLE(lit);
         RB_OBJ_WRITTEN(iseq, Qundef, lit);
     }
     else {
-        CHECK(compile_dstr_fragments(iseq, ret, node, &cnt));
+        CHECK(compile_dstr_fragments(iseq, ret, node, &cnt, FALSE));
         ADD_INSN1(ret, node, concatstrings, INT2FIX(cnt));
     }
     return COMPILE_OK;
 }
 
 static int
-compile_dregx(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node)
+compile_dregx(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
     int cnt;
-    CHECK(compile_dstr_fragments(iseq, ret, node, &cnt));
-    ADD_INSN2(ret, node, toregexp, INT2FIX(node->nd_cflag), INT2FIX(cnt));
+    int cflag = (int)RNODE_DREGX(node)->as.nd_cflag;
+
+    if (!RNODE_DREGX(node)->nd_next) {
+        if (!popped) {
+            VALUE src = rb_node_dregx_string_val(node);
+            VALUE match = rb_reg_compile(src, cflag, NULL, 0);
+            RB_OBJ_SET_SHAREABLE(match);
+            ADD_INSN1(ret, node, putobject, match);
+            RB_OBJ_WRITTEN(iseq, Qundef, match);
+        }
+        return COMPILE_OK;
+    }
+
+    CHECK(compile_dstr_fragments(iseq, ret, node, &cnt, TRUE));
+    ADD_INSN2(ret, node, toregexp, INT2FIX(cflag), INT2FIX(cnt));
+
+    if (popped) {
+        ADD_INSN(ret, node, pop);
+    }
+
     return COMPILE_OK;
 }
 
@@ -4208,7 +4782,7 @@ compile_flip_flop(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const nod
     ADD_INSNL(ret, node, branchif, lend);
 
     /* *flip == 0 */
-    CHECK(COMPILE(ret, "flip2 beg", node->nd_beg));
+    CHECK(COMPILE(ret, "flip2 beg", RNODE_FLIP2(node)->nd_beg));
     ADD_INSNL(ret, node, branchunless, else_label);
     ADD_INSN1(ret, node, putobject, Qtrue);
     ADD_INSN1(ret, node, setspecial, key);
@@ -4218,7 +4792,7 @@ compile_flip_flop(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const nod
 
     /* *flip == 1 */
     ADD_LABEL(ret, lend);
-    CHECK(COMPILE(ret, "flip2 end", node->nd_end));
+    CHECK(COMPILE(ret, "flip2 end", RNODE_FLIP2(node)->nd_end));
     ADD_INSNL(ret, node, branchunless, then_label);
     ADD_INSN1(ret, node, putobject, Qfalse);
     ADD_INSN1(ret, node, setspecial, key);
@@ -4228,40 +4802,73 @@ compile_flip_flop(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const nod
 }
 
 static int
-compile_branch_condition(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *cond,
+compile_branch_condition(rb_iseq_t *iseq, LINK_ANCHOR *ret, const NODE *cond,
+                         LABEL *then_label, LABEL *else_label);
+
+#define COMPILE_SINGLE 2
+static int
+compile_logical(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *cond,
+                LABEL *then_label, LABEL *else_label)
+{
+    DECL_ANCHOR(seq);
+    INIT_ANCHOR(seq);
+    LABEL *label = NEW_LABEL(nd_line(cond));
+    if (!then_label) then_label = label;
+    else if (!else_label) else_label = label;
+
+    CHECK(compile_branch_condition(iseq, seq, cond, then_label, else_label));
+
+    if (LIST_INSN_SIZE_ONE(seq)) {
+        INSN *insn = (INSN *)ELEM_FIRST_INSN(FIRST_ELEMENT(seq));
+        if (insn->insn_id == BIN(jump) && (LABEL *)(insn->operands[0]) == label)
+            return COMPILE_OK;
+    }
+    if (!label->refcnt) {
+        return COMPILE_SINGLE;
+    }
+    ADD_LABEL(seq, label);
+    ADD_SEQ(ret, seq);
+    return COMPILE_OK;
+}
+
+static int
+compile_branch_condition(rb_iseq_t *iseq, LINK_ANCHOR *ret, const NODE *cond,
                          LABEL *then_label, LABEL *else_label)
 {
+    int ok;
+    DECL_ANCHOR(ignore);
+
   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) {
-                ADD_INSN(ret, cond, putnil);
-                break;
-            }
-            ADD_LABEL(ret, label);
-            cond = cond->nd_2nd;
-            goto again;
-        }
+        CHECK(ok = compile_logical(iseq, ret, RNODE_AND(cond)->nd_1st, NULL, else_label));
+        cond = RNODE_AND(cond)->nd_2nd;
+        if (ok == COMPILE_SINGLE) {
+            INIT_ANCHOR(ignore);
+            ret = ignore;
+            then_label = NEW_LABEL(nd_line(cond));
+        }
+        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) {
-                ADD_INSN(ret, cond, putnil);
-                break;
-            }
-            ADD_LABEL(ret, label);
-            cond = cond->nd_2nd;
-            goto again;
-        }
-      case NODE_LIT:		/* NODE_LIT is always true */
+        CHECK(ok = compile_logical(iseq, ret, RNODE_OR(cond)->nd_1st, then_label, NULL));
+        cond = RNODE_OR(cond)->nd_2nd;
+        if (ok == COMPILE_SINGLE) {
+            INIT_ANCHOR(ignore);
+            ret = ignore;
+            else_label = NEW_LABEL(nd_line(cond));
+        }
+        goto again;
+      case NODE_SYM:
+      case NODE_LINE:
+      case NODE_FILE:
+      case NODE_ENCODING:
+      case NODE_INTEGER:    /* NODE_INTEGER is always true */
+      case NODE_FLOAT:      /* NODE_FLOAT is always true */
+      case NODE_RATIONAL:   /* NODE_RATIONAL is always true */
+      case NODE_IMAGINARY:  /* NODE_IMAGINARY is always true */
       case NODE_TRUE:
       case NODE_STR:
+      case NODE_REGX:
       case NODE_ZLIST:
       case NODE_LAMBDA:
         /* printf("useless condition eliminate (%s)\n",  ruby_node_name(nd_type(cond))); */
@@ -4286,10 +4893,31 @@ compile_branch_condition(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *co
         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));
+        CHECK(compile_defined_expr(iseq, ret, cond, Qfalse, ret == ignore));
         break;
       default:
-        CHECK(COMPILE(ret, "branch condition", cond));
+        {
+            DECL_ANCHOR(cond_seq);
+            INIT_ANCHOR(cond_seq);
+
+            CHECK(COMPILE(cond_seq, "branch condition", cond));
+
+            if (LIST_INSN_SIZE_ONE(cond_seq)) {
+                INSN *insn = (INSN *)ELEM_FIRST_INSN(FIRST_ELEMENT(cond_seq));
+                if (insn->insn_id == BIN(putobject)) {
+                    if (RTEST(insn->operands[0])) {
+                        ADD_INSNL(ret, cond, jump, then_label);
+                        // maybe unreachable
+                        return COMPILE_OK;
+                    }
+                    else {
+                        ADD_INSNL(ret, cond, jump, else_label);
+                        return COMPILE_OK;
+                    }
+                }
+            }
+            ADD_SEQ(ret, cond_seq);
+        }
         break;
     }
 
@@ -4303,33 +4931,68 @@ compile_branch_condition(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *co
 static int
 keyword_node_p(const NODE *const node)
 {
-    return nd_type_p(node, NODE_HASH) && (node->nd_brace & HASH_BRACE) != HASH_BRACE;
+    return nd_type_p(node, NODE_HASH) && (RNODE_HASH(node)->nd_brace & HASH_BRACE) != HASH_BRACE;
+}
+
+static VALUE
+get_symbol_value(rb_iseq_t *iseq, const NODE *node)
+{
+    switch (nd_type(node)) {
+      case NODE_SYM:
+        return rb_node_sym_string_val(node);
+      default:
+        UNKNOWN_NODE("get_symbol_value", node, Qnil);
+    }
+}
+
+static VALUE
+node_hash_unique_key_index(rb_iseq_t *iseq, rb_node_hash_t *node_hash, int *count_ptr)
+{
+    NODE *node = node_hash->nd_head;
+    VALUE hash = rb_hash_new();
+    VALUE ary = rb_ary_new();
+
+    for (int i = 0; node != NULL; i++, node = RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_next) {
+        VALUE key = get_symbol_value(iseq, RNODE_LIST(node)->nd_head);
+        VALUE idx = rb_hash_aref(hash, key);
+        if (!NIL_P(idx)) {
+            rb_ary_store(ary, FIX2INT(idx), Qfalse);
+            (*count_ptr)--;
+        }
+        rb_hash_aset(hash, key, INT2FIX(i));
+        rb_ary_store(ary, i, Qtrue);
+        (*count_ptr)++;
+    }
+
+    return ary;
 }
 
 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)
+                    const NODE *const root_node,
+                    struct rb_callinfo_kwarg **const kw_arg_ptr,
+                    unsigned int *flag)
 {
-    if (kw_arg_ptr == NULL) return FALSE;
+    RUBY_ASSERT(nd_type_p(root_node, NODE_HASH));
+    RUBY_ASSERT(kw_arg_ptr != NULL);
+    RUBY_ASSERT(flag != NULL);
 
-    if (root_node->nd_head && nd_type_p(root_node->nd_head, NODE_LIST)) {
-        const NODE *node = root_node->nd_head;
+    if (RNODE_HASH(root_node)->nd_head && nd_type_p(RNODE_HASH(root_node)->nd_head, NODE_LIST)) {
+        const NODE *node = RNODE_HASH(root_node)->nd_head;
         int seen_nodes = 0;
 
         while (node) {
-            const NODE *key_node = node->nd_head;
+            const NODE *key_node = RNODE_LIST(node)->nd_head;
             seen_nodes++;
 
-            assert(nd_type_p(node, NODE_LIST));
-            if (key_node && nd_type_p(key_node, NODE_LIT) && SYMBOL_P(key_node->nd_lit)) {
+            RUBY_ASSERT(nd_type_p(node, NODE_LIST));
+            if (key_node && nd_type_p(key_node, NODE_SYM)) {
                 /* can be keywords */
             }
             else {
                 if (flag) {
                     *flag |= VM_CALL_KW_SPLAT;
-                    if (seen_nodes > 1 || node->nd_next->nd_next) {
+                    if (seen_nodes > 1 || RNODE_LIST(RNODE_LIST(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.
@@ -4339,29 +5002,37 @@ compile_keyword_arg(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
                 }
                 return FALSE;
             }
-            node = node->nd_next; /* skip value node */
-            node = node->nd_next;
+            node = RNODE_LIST(node)->nd_next; /* skip value node */
+            node = RNODE_LIST(node)->nd_next;
         }
 
         /* may be keywords */
-        node = root_node->nd_head;
+        node = RNODE_HASH(root_node)->nd_head;
         {
-            int len = (int)node->nd_alen / 2;
+            int len = 0;
+            VALUE key_index = node_hash_unique_key_index(iseq, RNODE_HASH(root_node), &len);
             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;
+            int j = 0;
+            kw_arg->references = 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));
+            for (i=0; node != NULL; i++, node = RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_next) {
+                const NODE *key_node = RNODE_LIST(node)->nd_head;
+                const NODE *val_node = RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_head;
+                int popped = TRUE;
+                if (rb_ary_entry(key_index, i)) {
+                    keywords[j] = get_symbol_value(iseq, key_node);
+                    j++;
+                    popped = FALSE;
+                }
+                NO_CHECK(COMPILE_(ret, "keyword values", val_node, popped));
             }
-            assert(i == len);
+            RUBY_ASSERT(j == len);
             return TRUE;
         }
     }
@@ -4369,43 +5040,52 @@ compile_keyword_arg(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
 }
 
 static int
-compile_args(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node,
-                   struct rb_callinfo_kwarg **keywords_ptr, unsigned int *flag)
+compile_args(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, NODE **kwnode_ptr)
 {
     int len = 0;
 
-    for (; node; len++, node = node->nd_next) {
+    for (; node; len++, node = RNODE_LIST(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);
-            }
+        if (RNODE_LIST(node)->nd_next == NULL && keyword_node_p(RNODE_LIST(node)->nd_head)) { /* last node is kwnode */
+            *kwnode_ptr = RNODE_LIST(node)->nd_head;
         }
         else {
-            NO_CHECK(COMPILE_(ret, "array element", node->nd_head, FALSE));
+            RUBY_ASSERT(!keyword_node_p(RNODE_LIST(node)->nd_head));
+            NO_CHECK(COMPILE_(ret, "array element", RNODE_LIST(node)->nd_head, FALSE));
         }
     }
 
     return len;
 }
 
-static inline int
-static_literal_node_p(const NODE *node, const rb_iseq_t *iseq)
+static inline bool
+frozen_string_literal_p(const rb_iseq_t *iseq)
+{
+    return ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal > 0;
+}
+
+static inline bool
+static_literal_node_p(const NODE *node, const rb_iseq_t *iseq, bool hash_key)
 {
     switch (nd_type(node)) {
-      case NODE_LIT:
+      case NODE_SYM:
+      case NODE_REGX:
+      case NODE_LINE:
+      case NODE_ENCODING:
+      case NODE_INTEGER:
+      case NODE_FLOAT:
+      case NODE_RATIONAL:
+      case NODE_IMAGINARY:
       case NODE_NIL:
       case NODE_TRUE:
       case NODE_FALSE:
         return TRUE;
       case NODE_STR:
-        return ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal;
+      case NODE_FILE:
+        return hash_key || frozen_string_literal_p(iseq);
       default:
         return FALSE;
     }
@@ -4415,30 +5095,54 @@ static inline VALUE
 static_literal_value(const NODE *node, rb_iseq_t *iseq)
 {
     switch (nd_type(node)) {
+      case NODE_INTEGER:
+        {
+            VALUE lit = rb_node_integer_literal_val(node);
+            if (!SPECIAL_CONST_P(lit)) RB_OBJ_SET_SHAREABLE(lit);
+            return lit;
+        }
+      case NODE_FLOAT:
+        {
+            VALUE lit = rb_node_float_literal_val(node);
+            if (!SPECIAL_CONST_P(lit)) RB_OBJ_SET_SHAREABLE(lit);
+            return lit;
+        }
+      case NODE_RATIONAL:
+        return rb_ractor_make_shareable(rb_node_rational_literal_val(node));
+      case NODE_IMAGINARY:
+        return rb_ractor_make_shareable(rb_node_imaginary_literal_val(node));
       case NODE_NIL:
         return Qnil;
       case NODE_TRUE:
         return Qtrue;
       case NODE_FALSE:
         return Qfalse;
+      case NODE_SYM:
+        return rb_node_sym_string_val(node);
+      case NODE_REGX:
+        return RB_OBJ_SET_SHAREABLE(rb_node_regx_string_val(node));
+      case NODE_LINE:
+        return rb_node_line_lineno_val(node);
+      case NODE_ENCODING:
+        return rb_node_encoding_val(node);
+      case NODE_FILE:
       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);
+            VALUE lit = get_string_value(node);
+            VALUE str = rb_str_with_debug_created_info(lit, rb_iseq_path(iseq), (int)nd_line(node));
+            RB_OBJ_SET_SHAREABLE(str);
+            return str;
         }
         else {
-            return rb_fstring(node->nd_lit);
+            return get_string_value(node);
         }
       default:
-        return node->nd_lit;
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(node)));
     }
 }
 
 static int
-compile_array(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int popped)
+compile_array(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int popped, bool first_chunk)
 {
     const NODE *line_node = node;
 
@@ -4452,8 +5156,8 @@ compile_array(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int pop
     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));
+        for (; node; node = RNODE_LIST(node)->nd_next) {
+            NO_CHECK(COMPILE_(ret, "array element", RNODE_LIST(node)->nd_head, popped));
         }
         return 1;
     }
@@ -4473,8 +5177,8 @@ compile_array(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int pop
      *
      *   [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;
+     *     push x257; push x258; ...; push x512; pushtoarray 256;
+     *     push x513; push x514; ...; push x768; pushtoarray 256;
      *     ...
      *
      * - Long subarray can be optimized by pre-allocating a hidden array.
@@ -4484,38 +5188,38 @@ compile_array(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int pop
      *
      *   [x, 1,2,3,...,100, z] =>
      *     push x; newarray 1;
-     *     putobject [1,2,3,...,100] (<- hidden array); concatarray;
-     *     push z; newarray 1; concatarray
+     *     putobject [1,2,3,...,100] (<- hidden array); concattoarray;
+     *     push z; pushtoarray 1;
      *
-     * - If the last element is a keyword, newarraykwsplat should be emitted
-     *   to check and remove empty keyword arguments hash from array.
+     * - If the last element is a keyword, pushtoarraykwsplat should be emitted
+     *   to only push it onto the array if it is not empty
      *   (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
+     *     putobject 1; putobject 2; putobject 3; newarray 3; ...; pushtoarraykwsplat kw
      */
 
     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)                               \
+    /* Either create a new array, or push to the existing array */
+#define FLUSH_CHUNK \
     if (stack_len) {                                            \
-        ADD_INSN1(ret, line_node, newarrayinsn, INT2FIX(stack_len)); \
-        if (!first_chunk) ADD_INSN(ret, line_node, concatarray);     \
-        first_chunk = stack_len = 0;                            \
+        if (first_chunk) ADD_INSN1(ret, line_node, newarray, INT2FIX(stack_len)); \
+        else ADD_INSN1(ret, line_node, pushtoarray, INT2FIX(stack_len));     \
+        first_chunk = FALSE; \
+        stack_len = 0;                            \
     }
 
     while (node) {
         int count = 1;
 
         /* pre-allocation check (this branch can be omittable) */
-        if (static_literal_node_p(node->nd_head, iseq)) {
+        if (static_literal_node_p(RNODE_LIST(node)->nd_head, iseq, false)) {
             /* count the elements that are optimizable */
-            const NODE *node_tmp = node->nd_next;
-            for (; node_tmp && static_literal_node_p(node_tmp->nd_head, iseq); node_tmp = node_tmp->nd_next)
+            const NODE *node_tmp = RNODE_LIST(node)->nd_next;
+            for (; node_tmp && static_literal_node_p(RNODE_LIST(node_tmp)->nd_head, iseq, false); node_tmp = RNODE_LIST(node_tmp)->nd_next)
                 count++;
 
             if ((first_chunk && stack_len == 0 && !node_tmp) || count >= min_tmp_ary_len) {
@@ -4523,72 +5227,62 @@ compile_array(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int pop
                 VALUE ary = rb_ary_hidden_new(count);
 
                 /* Create a hidden array */
-                for (; count; count--, node = node->nd_next)
-                    rb_ary_push(ary, static_literal_value(node->nd_head, iseq));
-                OBJ_FREEZE(ary);
+                for (; count; count--, node = RNODE_LIST(node)->nd_next)
+                    rb_ary_push(ary, static_literal_value(RNODE_LIST(node)->nd_head, iseq));
+                RB_OBJ_SET_FROZEN_SHAREABLE(ary);
 
                 /* Emit optimized code */
-                FLUSH_CHUNK(newarray);
+                FLUSH_CHUNK;
                 if (first_chunk) {
                     ADD_INSN1(ret, line_node, duparray, ary);
-                    first_chunk = 0;
+                    first_chunk = FALSE;
                 }
                 else {
                     ADD_INSN1(ret, line_node, putobject, ary);
-                    ADD_INSN(ret, line_node, concatarray);
+                    ADD_INSN(ret, line_node, concattoarray);
                 }
+                RB_OBJ_SET_SHAREABLE(ary);
                 RB_OBJ_WRITTEN(iseq, Qundef, ary);
             }
         }
 
         /* Base case: Compile "count" elements */
-        for (; count; count--, node = node->nd_next) {
+        for (; count; count--, node = RNODE_LIST(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);
+            if (!RNODE_LIST(node)->nd_next && keyword_node_p(RNODE_LIST(node)->nd_head)) {
+                /* Create array or push existing non-keyword elements onto array */
+                if (stack_len == 0 && first_chunk) {
+                    ADD_INSN1(ret, line_node, newarray, INT2FIX(0));
+                }
+                else {
+                    FLUSH_CHUNK;
+                }
+                NO_CHECK(COMPILE_(ret, "array element", RNODE_LIST(node)->nd_head, 0));
+                ADD_INSN(ret, line_node, pushtoarraykwsplat);
                 return 1;
             }
+            else {
+                NO_CHECK(COMPILE_(ret, "array element", RNODE_LIST(node)->nd_head, 0));
+                stack_len++;
+            }
 
             /* If there are many pushed elements, flush them to avoid stack overflow */
-            if (stack_len >= max_stack_len) FLUSH_CHUNK(newarray);
+            if (stack_len >= max_stack_len) FLUSH_CHUNK;
         }
     }
 
-    FLUSH_CHUNK(newarray);
+    FLUSH_CHUNK;
 #undef FLUSH_CHUNK
     return 1;
 }
 
-/* Compile an array containing the single element represented by node */
-static int
-compile_array_1(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node)
-{
-    if (static_literal_node_p(node, iseq)) {
-        VALUE ary = rb_ary_hidden_new(1);
-        rb_ary_push(ary, static_literal_value(node, iseq));
-        OBJ_FREEZE(ary);
-
-        ADD_INSN1(ret, node, duparray, ary);
-    }
-    else {
-        CHECK(COMPILE_(ret, "array element", node, FALSE));
-        ADD_INSN1(ret, node, newarray, INT2FIX(1));
-    }
-
-    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->nd_head, iseq) && static_literal_node_p(node->nd_next->nd_head, iseq);
+    return RNODE_LIST(node)->nd_head && static_literal_node_p(RNODE_LIST(node)->nd_head, iseq, true) && static_literal_node_p(RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_head, iseq, false);
 }
 
 static int
@@ -4596,7 +5290,7 @@ compile_hash(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int meth
 {
     const NODE *line_node = node;
 
-    node = node->nd_head;
+    node = RNODE_HASH(node)->nd_head;
 
     if (!node || nd_type_p(node, NODE_ZLIST)) {
         if (!popped) {
@@ -4608,8 +5302,8 @@ compile_hash(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int meth
     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));
+        for (; node; node = RNODE_LIST(node)->nd_next) {
+            NO_CHECK(COMPILE_(ret, "hash element", RNODE_LIST(node)->nd_head, popped));
         }
         return 1;
     }
@@ -4662,8 +5356,8 @@ compile_hash(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int meth
         /* 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)
+            const NODE *node_tmp = RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_next;
+            for (; node_tmp && static_literal_node_pair_p(node_tmp, iseq); node_tmp = RNODE_LIST(RNODE_LIST(node_tmp)->nd_next)->nd_next)
                 count++;
 
             if ((first_chunk && stack_len == 0 && !node_tmp) || count >= min_tmp_hash_len) {
@@ -4671,16 +5365,17 @@ compile_hash(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int meth
                 VALUE ary = rb_ary_hidden_new(count);
 
                 /* Create a hidden hash */
-                for (; count; count--, node = node->nd_next->nd_next) {
+                for (; count; count--, node = RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_next) {
                     VALUE elem[2];
-                    elem[0] = static_literal_value(node->nd_head, iseq);
-                    elem[1] = static_literal_value(node->nd_next->nd_head, iseq);
+                    elem[0] = static_literal_value(RNODE_LIST(node)->nd_head, iseq);
+                    if (!RB_SPECIAL_CONST_P(elem[0])) RB_OBJ_SET_FROZEN_SHAREABLE(elem[0]);
+                    elem[1] = static_literal_value(RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_head, iseq);
+                    if (!RB_SPECIAL_CONST_P(elem[1])) RB_OBJ_SET_FROZEN_SHAREABLE(elem[1]);
                     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);
+                rb_hash_bulk_insert(RARRAY_LEN(ary), RARRAY_CONST_PTR(ary), hash);
+                hash = RB_OBJ_SET_FROZEN_SHAREABLE(rb_obj_hide(hash));
 
                 /* Emit optimized code */
                 FLUSH_CHUNK();
@@ -4701,16 +5396,16 @@ compile_hash(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int meth
         }
 
         /* Base case: Compile "count" elements */
-        for (; count; count--, node = node->nd_next->nd_next) {
+        for (; count; count--, node = RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_next) {
 
             if (CPDEBUG > 0) {
                 EXPECT_NODE("compile_hash", node, NODE_LIST, -1);
             }
 
-            if (node->nd_head) {
+            if (RNODE_LIST(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));
+                NO_CHECK(COMPILE_(anchor, "hash key element", RNODE_LIST(node)->nd_head, 0));
+                NO_CHECK(COMPILE_(anchor, "hash value element", RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_head, 0));
                 stack_len += 2;
 
                 /* If there are many pushed elements, flush them to avoid stack overflow */
@@ -4720,12 +5415,13 @@ compile_hash(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, int meth
                 /* kwsplat case: foo(..., **kw, ...) */
                 FLUSH_CHUNK();
 
-                const NODE *kw = node->nd_next->nd_head;
-                int empty_kw = nd_type_p(kw, NODE_LIT) && RB_TYPE_P(kw->nd_lit, T_HASH); /* foo(  ..., **{}, ...) */
+                const NODE *kw = RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_head;
+                int empty_kw = nd_type_p(kw, NODE_HASH) && (!RNODE_HASH(kw)->nd_head); /* 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 last_kw = !RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_next; /* foo(  ..., **kw) */
                 int only_kw = last_kw && first_kw;            /* foo(1,2,3, **kw) */
 
+                empty_kw = empty_kw || nd_type_p(kw, NODE_NIL); /* foo(  ..., **nil, ...) */
                 if (empty_kw) {
                     if (only_kw && method_call_keywords) {
                         /* **{} appears at the only keyword argument in method call,
@@ -4785,29 +5481,34 @@ VALUE
 rb_node_case_when_optimizable_literal(const NODE *const node)
 {
     switch (nd_type(node)) {
-      case NODE_LIT: {
-        VALUE v = node->nd_lit;
+      case NODE_INTEGER:
+        return rb_node_integer_literal_val(node);
+      case NODE_FLOAT: {
+        VALUE v = rb_node_float_literal_val(node);
         double ival;
-        if (RB_FLOAT_TYPE_P(v) &&
-            modf(RFLOAT_VALUE(v), &ival) == 0.0) {
+
+        if (modf(RFLOAT_VALUE(v), &ival) == 0.0) {
             return FIXABLE(ival) ? LONG2FIX((long)ival) : rb_dbl2big(ival);
         }
-        if (RB_TYPE_P(v, T_RATIONAL) || RB_TYPE_P(v, T_COMPLEX)) {
-            return Qundef;
-        }
-        if (SYMBOL_P(v) || rb_obj_is_kind_of(v, rb_cNumeric)) {
-            return v;
-        }
-        break;
+        return v;
       }
+      case NODE_RATIONAL:
+      case NODE_IMAGINARY:
+        return Qundef;
       case NODE_NIL:
         return Qnil;
       case NODE_TRUE:
         return Qtrue;
       case NODE_FALSE:
         return Qfalse;
+      case NODE_SYM:
+        return rb_node_sym_string_val(node);
+      case NODE_LINE:
+        return rb_node_line_lineno_val(node);
       case NODE_STR:
-        return rb_fstring(node->nd_lit);
+        return rb_node_str_string_val(node);
+      case NODE_FILE:
+        return rb_node_file_path_val(node);
     }
     return Qundef;
 }
@@ -4817,19 +5518,19 @@ 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;
+        const NODE *val = RNODE_LIST(vals)->nd_head;
         VALUE lit = rb_node_case_when_optimizable_literal(val);
 
-        if (lit == Qundef) {
+        if (UNDEF_P(lit)) {
             only_special_literals = 0;
         }
         else if (NIL_P(rb_hash_lookup(literals, lit))) {
             rb_hash_aset(literals, lit, (VALUE)(l1) | 1);
         }
 
-        if (nd_type_p(val, NODE_STR)) {
-            debugp_param("nd_lit", val->nd_lit);
-            lit = rb_fstring(val->nd_lit);
+        if (nd_type_p(val, NODE_STR) || nd_type_p(val, NODE_FILE)) {
+            debugp_param("nd_lit", get_string_value(val));
+            lit = get_string_value(val);
             ADD_INSN1(cond_seq, val, putobject, lit);
             RB_OBJ_WRITTEN(iseq, Qundef, lit);
         }
@@ -4837,11 +5538,11 @@ when_vals(rb_iseq_t *iseq, LINK_ANCHOR *const cond_seq, const NODE *vals,
             if (!COMPILE(cond_seq, "when cond", val)) return -1;
         }
 
-        // Emit patern === target
+        // Emit pattern === target
         ADD_INSN1(cond_seq, vals, topn, INT2FIX(1));
         ADD_CALL(cond_seq, vals, idEqq, INT2FIX(1));
         ADD_INSNL(cond_seq, val, branchif, l1);
-        vals = vals->nd_next;
+        vals = RNODE_LIST(vals)->nd_next;
     }
     return only_special_literals;
 }
@@ -4859,19 +5560,19 @@ when_splat_vals(rb_iseq_t *iseq, LINK_ANCHOR *const cond_seq, const NODE *vals,
         break;
       case NODE_SPLAT:
         ADD_INSN (cond_seq, line_node, dup);
-        CHECK(COMPILE(cond_seq, "when splat", vals->nd_head));
+        CHECK(COMPILE(cond_seq, "when splat", RNODE_SPLAT(vals)->nd_head));
         ADD_INSN1(cond_seq, line_node, splatarray, Qfalse);
         ADD_INSN1(cond_seq, line_node, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE | VM_CHECKMATCH_ARRAY));
         ADD_INSNL(cond_seq, line_node, 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));
+        CHECK(when_splat_vals(iseq, cond_seq, RNODE_ARGSCAT(vals)->nd_head, l1, only_special_literals, literals));
+        CHECK(when_splat_vals(iseq, cond_seq, RNODE_ARGSCAT(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));
+        CHECK(when_splat_vals(iseq, cond_seq, RNODE_ARGSPUSH(vals)->nd_head, l1, only_special_literals, literals));
         ADD_INSN (cond_seq, line_node, dup);
-        CHECK(COMPILE(cond_seq, "when argspush body", vals->nd_body));
+        CHECK(COMPILE(cond_seq, "when argspush body", RNODE_ARGSPUSH(vals)->nd_body));
         ADD_INSN1(cond_seq, line_node, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_CASE));
         ADD_INSNL(cond_seq, line_node, branchif, l1);
         break;
@@ -5030,12 +5731,17 @@ compile_massign_lhs(rb_iseq_t *iseq, LINK_ANCHOR *const pre, LINK_ANCHOR *const
 
         CHECK(COMPILE_POPPED(pre, "masgn lhs (NODE_ATTRASGN)", node));
 
+        bool safenav_call = false;
         LINK_ELEMENT *insn_element = LAST_ELEMENT(pre);
         iobj = (INSN *)get_prev_insn((INSN *)insn_element); /* send insn */
         ASSUME(iobj);
-        ELEM_REMOVE(LAST_ELEMENT(pre));
-        ELEM_REMOVE((LINK_ELEMENT *)iobj);
-        pre->last = iobj->link.prev;
+        ELEM_REMOVE(insn_element);
+        if (!IS_INSN_ID(iobj, send)) {
+            safenav_call = true;
+            iobj = (INSN *)get_prev_insn(iobj);
+            ELEM_INSERT_NEXT(&iobj->link, insn_element);
+        }
+        (pre->last = iobj->link.prev)->next = 0;
 
         const struct rb_callinfo *ci = (struct rb_callinfo *)OPERAND_AT(iobj, 0);
         int argc = vm_ci_argc(ci) + 1;
@@ -5054,18 +5760,46 @@ compile_massign_lhs(rb_iseq_t *iseq, LINK_ANCHOR *const pre, LINK_ANCHOR *const
             return COMPILE_NG;
         }
 
-        ADD_ELEM(lhs, (LINK_ELEMENT *)iobj);
+        iobj->link.prev = lhs->last;
+        lhs->last->next = &iobj->link;
+        for (lhs->last = &iobj->link; lhs->last->next; lhs->last = lhs->last->next);
         if (vm_ci_flag(ci) & VM_CALL_ARGS_SPLAT) {
             int argc = vm_ci_argc(ci);
+            bool dupsplat = false;
             ci = ci_argc_set(iseq, ci, argc - 1);
+            if (!(vm_ci_flag(ci) & VM_CALL_ARGS_SPLAT_MUT)) {
+                /* Given h[*a], _ = ary
+                 * setup_args sets VM_CALL_ARGS_SPLAT and not VM_CALL_ARGS_SPLAT_MUT
+                 * `a` must be dupped, because it will be appended with ary[0]
+                 * Since you are dupping `a`, you can set VM_CALL_ARGS_SPLAT_MUT
+                 */
+                dupsplat = true;
+                ci = ci_flag_set(iseq, ci, VM_CALL_ARGS_SPLAT_MUT);
+            }
             OPERAND_AT(iobj, 0) = (VALUE)ci;
             RB_OBJ_WRITTEN(iseq, Qundef, iobj);
-            INSERT_BEFORE_INSN1(iobj, line_node, newarray, INT2FIX(1));
-            INSERT_BEFORE_INSN(iobj, line_node, concatarray);
+
+            /* Given: h[*a], h[*b, 1] = ary
+             *  h[*a] uses splatarray false and does not set VM_CALL_ARGS_SPLAT_MUT,
+             *    so this uses splatarray true on a to dup it before using pushtoarray
+             *  h[*b, 1] uses splatarray true and sets VM_CALL_ARGS_SPLAT_MUT,
+             *    so you can use pushtoarray directly
+             */
+            int line_no = nd_line(line_node);
+            int node_id = nd_node_id(line_node);
+
+            if (dupsplat) {
+                INSERT_BEFORE_INSN(iobj, line_no, node_id, swap);
+                INSERT_BEFORE_INSN1(iobj, line_no, node_id, splatarray, Qtrue);
+                INSERT_BEFORE_INSN(iobj, line_no, node_id, swap);
+            }
+            INSERT_BEFORE_INSN1(iobj, line_no, node_id, pushtoarray, INT2FIX(1));
         }
-        ADD_INSN(lhs, line_node, pop);
-        if (argc != 1) {
+        if (!safenav_call) {
             ADD_INSN(lhs, line_node, pop);
+            if (argc != 1) {
+                ADD_INSN(lhs, line_node, pop);
+            }
         }
         for (int i=0; i < argc; i++) {
             ADD_INSN(post, line_node, pop);
@@ -5091,7 +5825,7 @@ compile_massign_lhs(rb_iseq_t *iseq, LINK_ANCHOR *const pre, LINK_ANCHOR *const
         break;
       }
       case NODE_CDECL:
-        if (!node->nd_vid) {
+        if (!RNODE_CDECL(node)->nd_vid) {
             /* Special handling only needed for expr::C, not for C */
             INSN *iobj;
 
@@ -5129,8 +5863,8 @@ 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, ret, ret, ret, lhsn->nd_head, NULL, 0));
+        CHECK(compile_massign_opt_lhs(iseq, ret, RNODE_LIST(lhsn)->nd_next));
+        CHECK(compile_massign_lhs(iseq, ret, ret, ret, ret, RNODE_LIST(lhsn)->nd_head, NULL, 0));
     }
     return COMPILE_OK;
 }
@@ -5160,31 +5894,29 @@ compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
     }
 
     while (lhsn) {
-        const NODE *ln = lhsn->nd_head;
+        const NODE *ln = RNODE_LIST(lhsn)->nd_head;
         switch (nd_type(ln)) {
           case NODE_LASGN:
-            MEMORY(ln->nd_vid);
-            break;
           case NODE_DASGN:
           case NODE_IASGN:
           case NODE_CVASGN:
-            MEMORY(ln->nd_vid);
+            MEMORY(get_nd_vid(ln));
             break;
           default:
             return 0;
         }
-        lhsn = lhsn->nd_next;
+        lhsn = RNODE_LIST(lhsn)->nd_next;
         llen++;
     }
 
     while (rhsn) {
         if (llen <= rlen) {
-            NO_CHECK(COMPILE_POPPED(ret, "masgn val (popped)", rhsn->nd_head));
+            NO_CHECK(COMPILE_POPPED(ret, "masgn val (popped)", RNODE_LIST(rhsn)->nd_head));
         }
         else {
-            NO_CHECK(COMPILE(ret, "masgn val", rhsn->nd_head));
+            NO_CHECK(COMPILE(ret, "masgn val", RNODE_LIST(rhsn)->nd_head));
         }
-        rhsn = rhsn->nd_next;
+        rhsn = RNODE_LIST(rhsn)->nd_next;
         rlen++;
     }
 
@@ -5201,32 +5933,31 @@ compile_massign_opt(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
 static int
 compile_massign0(rb_iseq_t *iseq, LINK_ANCHOR *const pre, LINK_ANCHOR *const rhs, LINK_ANCHOR *const lhs, LINK_ANCHOR *const post, const NODE *const node, struct masgn_state *state, int popped)
 {
-    const NODE *rhsn = node->nd_value;
-    const NODE *splatn = node->nd_args;
-    const NODE *lhsn = node->nd_head;
+    const NODE *rhsn = RNODE_MASGN(node)->nd_value;
+    const NODE *splatn = RNODE_MASGN(node)->nd_args;
+    const NODE *lhsn = RNODE_MASGN(node)->nd_head;
     const NODE *lhsn_count = lhsn;
     int lhs_splat = (splatn && NODE_NAMED_REST_P(splatn)) ? 1 : 0;
 
     int llen = 0;
     int lpos = 0;
-    int expand = 1;
 
     while (lhsn_count) {
         llen++;
-        lhsn_count = lhsn_count->nd_next;
+        lhsn_count = RNODE_LIST(lhsn_count)->nd_next;
     }
     while (lhsn) {
-        CHECK(compile_massign_lhs(iseq, pre, rhs, lhs, post, lhsn->nd_head, state, (llen - lpos) + lhs_splat + state->lhs_level));
+        CHECK(compile_massign_lhs(iseq, pre, rhs, lhs, post, RNODE_LIST(lhsn)->nd_head, state, (llen - lpos) + lhs_splat + state->lhs_level));
         lpos++;
-        lhsn = lhsn->nd_next;
+        lhsn = RNODE_LIST(lhsn)->nd_next;
     }
 
     if (lhs_splat) {
         if (nd_type_p(splatn, NODE_POSTARG)) {
             /*a, b, *r, p1, p2 */
-            const NODE *postn = splatn->nd_2nd;
-            const NODE *restn = splatn->nd_1st;
-            int plen = (int)postn->nd_alen;
+            const NODE *postn = RNODE_POSTARG(splatn)->nd_2nd;
+            const NODE *restn = RNODE_POSTARG(splatn)->nd_1st;
+            int plen = (int)RNODE_LIST(postn)->as.nd_alen;
             int ppos = 0;
             int flag = 0x02 | (NODE_NAMED_REST_P(restn) ? 0x01 : 0x00);
 
@@ -5236,9 +5967,9 @@ compile_massign0(rb_iseq_t *iseq, LINK_ANCHOR *const pre, LINK_ANCHOR *const rhs
                 CHECK(compile_massign_lhs(iseq, pre, rhs, lhs, post, restn, state, 1 + plen + state->lhs_level));
             }
             while (postn) {
-                CHECK(compile_massign_lhs(iseq, pre, rhs, lhs, post, postn->nd_head, state, (plen - ppos) + state->lhs_level));
+                CHECK(compile_massign_lhs(iseq, pre, rhs, lhs, post, RNODE_LIST(postn)->nd_head, state, (plen - ppos) + state->lhs_level));
                 ppos++;
-                postn = postn->nd_next;
+                postn = RNODE_LIST(postn)->nd_next;
             }
         }
         else {
@@ -5247,7 +5978,6 @@ compile_massign0(rb_iseq_t *iseq, LINK_ANCHOR *const pre, LINK_ANCHOR *const rhs
         }
     }
 
-
     if (!state->nested) {
         NO_CHECK(COMPILE(rhs, "normal masgn rhs", rhsn));
     }
@@ -5255,16 +5985,14 @@ compile_massign0(rb_iseq_t *iseq, LINK_ANCHOR *const pre, LINK_ANCHOR *const rhs
     if (!popped) {
         ADD_INSN(rhs, node, dup);
     }
-    if (expand) {
-        ADD_INSN2(rhs, node, expandarray, INT2FIX(llen), INT2FIX(lhs_splat));
-    }
+    ADD_INSN2(rhs, node, expandarray, INT2FIX(llen), INT2FIX(lhs_splat));
     return COMPILE_OK;
 }
 
 static int
 compile_massign(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
-    if (!popped || node->nd_args || !compile_massign_opt(iseq, ret, node->nd_value, node->nd_head)) {
+    if (!popped || RNODE_MASGN(node)->nd_args || !compile_massign_opt(iseq, ret, RNODE_MASGN(node)->nd_value, RNODE_MASGN(node)->nd_head)) {
         struct masgn_state state;
         state.lhs_level = popped ? 0 : 1;
         state.nested = 0;
@@ -5286,7 +6014,7 @@ compile_massign(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
         while (memo) {
             VALUE topn_arg = INT2FIX((state.num_args - memo->argn) + memo->lhs_pos);
             for (int i = 0; i < memo->num_args; i++) {
-                INSERT_BEFORE_INSN1(memo->before_insn, memo->line_node, topn, topn_arg);
+                INSERT_BEFORE_INSN1(memo->before_insn, nd_line(memo->line_node), nd_node_id(memo->line_node), topn, topn_arg);
             }
             tmp_memo = memo->next;
             free(memo);
@@ -5313,15 +6041,17 @@ collect_const_segments(rb_iseq_t *iseq, const NODE *node)
     for (;;) {
         switch (nd_type(node)) {
           case NODE_CONST:
-            rb_ary_unshift(arr, ID2SYM(node->nd_vid));
+            rb_ary_unshift(arr, ID2SYM(RNODE_CONST(node)->nd_vid));
+            RB_OBJ_SET_SHAREABLE(arr);
             return arr;
           case NODE_COLON3:
-            rb_ary_unshift(arr, ID2SYM(node->nd_mid));
+            rb_ary_unshift(arr, ID2SYM(RNODE_COLON3(node)->nd_mid));
             rb_ary_unshift(arr, ID2SYM(idNULL));
+            RB_OBJ_SET_SHAREABLE(arr);
             return arr;
           case NODE_COLON2:
-            rb_ary_unshift(arr, ID2SYM(node->nd_mid));
-            node = node->nd_head;
+            rb_ary_unshift(arr, ID2SYM(RNODE_COLON2(node)->nd_mid));
+            node = RNODE_COLON2(node)->nd_head;
             break;
           default:
             return Qfalse;
@@ -5335,22 +6065,22 @@ compile_const_prefix(rb_iseq_t *iseq, const NODE *const node,
 {
     switch (nd_type(node)) {
       case NODE_CONST:
-        debugi("compile_const_prefix - colon", node->nd_vid);
+        debugi("compile_const_prefix - colon", RNODE_CONST(node)->nd_vid);
         ADD_INSN1(body, node, putobject, Qtrue);
-        ADD_INSN1(body, node, getconstant, ID2SYM(node->nd_vid));
+        ADD_INSN1(body, node, getconstant, ID2SYM(RNODE_CONST(node)->nd_vid));
         break;
       case NODE_COLON3:
-        debugi("compile_const_prefix - colon3", node->nd_mid);
+        debugi("compile_const_prefix - colon3", RNODE_COLON3(node)->nd_mid);
         ADD_INSN(body, node, pop);
         ADD_INSN1(body, node, putobject, rb_cObject);
         ADD_INSN1(body, node, putobject, Qtrue);
-        ADD_INSN1(body, node, getconstant, ID2SYM(node->nd_mid));
+        ADD_INSN1(body, node, getconstant, ID2SYM(RNODE_COLON3(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);
+        CHECK(compile_const_prefix(iseq, RNODE_COLON2(node)->nd_head, pref, body));
+        debugi("compile_const_prefix - colon2", RNODE_COLON2(node)->nd_mid);
         ADD_INSN1(body, node, putobject, Qfalse);
-        ADD_INSN1(body, node, getconstant, ID2SYM(node->nd_mid));
+        ADD_INSN1(body, node, getconstant, ID2SYM(RNODE_COLON2(node)->nd_mid));
         break;
       default:
         CHECK(COMPILE(pref, "const colon2 prefix", node));
@@ -5367,9 +6097,9 @@ compile_cpath(LINK_ANCHOR *const ret, rb_iseq_t *iseq, const NODE *cpath)
         ADD_INSN1(ret, cpath, putobject, rb_cObject);
         return VM_DEFINECLASS_FLAG_SCOPED;
     }
-    else if (cpath->nd_head) {
+    else if (nd_type_p(cpath, NODE_COLON2) && RNODE_COLON2(cpath)->nd_head) {
         /* Bar::Foo */
-        NO_CHECK(COMPILE(ret, "nd_else->nd_head", cpath->nd_head));
+        NO_CHECK(COMPILE(ret, "nd_else->nd_head", RNODE_COLON2(cpath)->nd_head));
         return VM_DEFINECLASS_FLAG_SCOPED;
     }
     else {
@@ -5383,16 +6113,16 @@ compile_cpath(LINK_ANCHOR *const ret, rb_iseq_t *iseq, const NODE *cpath)
 static inline int
 private_recv_p(const NODE *node)
 {
-    if (nd_type_p(node->nd_recv, NODE_SELF)) {
-        NODE *self = node->nd_recv;
-        return self->nd_state != 0;
+    NODE *recv = get_nd_recv(node);
+    if (recv && nd_type_p(recv, NODE_SELF)) {
+        return RNODE_SELF(recv)->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);
+             const NODE *const node, LABEL **lfinish, VALUE needstr, bool ignore);
 
 static int
 compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, const enum node_type type, const NODE *const line_node, int popped, bool assume_receiver);
@@ -5423,21 +6153,34 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
         expr_type = DEFINED_FALSE;
         break;
 
+      case NODE_HASH:
       case NODE_LIST:{
-        const NODE *vals = node;
+        const NODE *vals = (nd_type(node) == NODE_HASH) ? RNODE_HASH(node)->nd_head : node;
 
-        do {
-            defined_expr0(iseq, ret, vals->nd_head, lfinish, Qfalse, false);
+        if (vals) {
+            do {
+                if (RNODE_LIST(vals)->nd_head) {
+                    defined_expr0(iseq, ret, RNODE_LIST(vals)->nd_head, lfinish, Qfalse, false);
 
-            if (!lfinish[1]) {
-                lfinish[1] = NEW_LABEL(line);
-            }
-            ADD_INSNL(ret, line_node, branchunless, lfinish[1]);
-        } while ((vals = vals->nd_next) != NULL);
+                    if (!lfinish[1]) {
+                        lfinish[1] = NEW_LABEL(line);
+                    }
+                    ADD_INSNL(ret, line_node, branchunless, lfinish[1]);
+                }
+            } while ((vals = RNODE_LIST(vals)->nd_next) != NULL);
+        }
       }
         /* fall through */
       case NODE_STR:
-      case NODE_LIT:
+      case NODE_SYM:
+      case NODE_REGX:
+      case NODE_LINE:
+      case NODE_FILE:
+      case NODE_ENCODING:
+      case NODE_INTEGER:
+      case NODE_FLOAT:
+      case NODE_RATIONAL:
+      case NODE_IMAGINARY:
       case NODE_ZLIST:
       case NODE_AND:
       case NODE_OR:
@@ -5445,6 +6188,15 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
         expr_type = DEFINED_EXPR;
         break;
 
+      case NODE_SPLAT:
+        defined_expr0(iseq, ret, RNODE_LIST(node)->nd_head, lfinish, Qfalse, false);
+        if (!lfinish[1]) {
+            lfinish[1] = NEW_LABEL(line);
+        }
+        ADD_INSNL(ret, line_node, branchunless, lfinish[1]);
+        expr_type = DEFINED_EXPR;
+        break;
+
         /* variables */
       case NODE_LVAR:
       case NODE_DVAR:
@@ -5453,49 +6205,48 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
 
 #define PUSH_VAL(type) (needstr == Qfalse ? Qtrue : rb_iseq_defined_string(type))
       case NODE_IVAR:
-        ADD_INSN(ret, line_node, putnil);
-        ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_IVAR),
-                  ID2SYM(node->nd_vid), PUSH_VAL(DEFINED_IVAR));
+        ADD_INSN3(ret, line_node, definedivar,
+                  ID2SYM(RNODE_IVAR(node)->nd_vid), get_ivar_ic_value(iseq,RNODE_IVAR(node)->nd_vid), PUSH_VAL(DEFINED_IVAR));
         return;
 
       case NODE_GVAR:
         ADD_INSN(ret, line_node, putnil);
         ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_GVAR),
-                  ID2SYM(node->nd_entry), PUSH_VAL(DEFINED_GVAR));
+                  ID2SYM(RNODE_GVAR(node)->nd_vid), PUSH_VAL(DEFINED_GVAR));
         return;
 
       case NODE_CVAR:
         ADD_INSN(ret, line_node, putnil);
         ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_CVAR),
-                  ID2SYM(node->nd_vid), PUSH_VAL(DEFINED_CVAR));
+                  ID2SYM(RNODE_CVAR(node)->nd_vid), PUSH_VAL(DEFINED_CVAR));
         return;
 
       case NODE_CONST:
         ADD_INSN(ret, line_node, putnil);
         ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_CONST),
-                  ID2SYM(node->nd_vid), PUSH_VAL(DEFINED_CONST));
+                  ID2SYM(RNODE_CONST(node)->nd_vid), PUSH_VAL(DEFINED_CONST));
         return;
       case NODE_COLON2:
         if (!lfinish[1]) {
             lfinish[1] = NEW_LABEL(line);
         }
-        defined_expr0(iseq, ret, node->nd_head, lfinish, Qfalse, false);
+        defined_expr0(iseq, ret, RNODE_COLON2(node)->nd_head, lfinish, Qfalse, false);
         ADD_INSNL(ret, line_node, branchunless, lfinish[1]);
-        NO_CHECK(COMPILE(ret, "defined/colon2#nd_head", node->nd_head));
+        NO_CHECK(COMPILE(ret, "defined/colon2#nd_head", RNODE_COLON2(node)->nd_head));
 
-        if (rb_is_const_id(node->nd_mid)) {
+        if (rb_is_const_id(RNODE_COLON2(node)->nd_mid)) {
             ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_CONST_FROM),
-                    ID2SYM(node->nd_mid), PUSH_VAL(DEFINED_CONST));
+                    ID2SYM(RNODE_COLON2(node)->nd_mid), PUSH_VAL(DEFINED_CONST));
         }
         else {
             ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_METHOD),
-                    ID2SYM(node->nd_mid), PUSH_VAL(DEFINED_METHOD));
+                    ID2SYM(RNODE_COLON2(node)->nd_mid), PUSH_VAL(DEFINED_METHOD));
         }
         return;
       case NODE_COLON3:
         ADD_INSN1(ret, line_node, putobject, rb_cObject);
         ADD_INSN3(ret, line_node, defined,
-                  INT2FIX(DEFINED_CONST_FROM), ID2SYM(node->nd_mid), PUSH_VAL(DEFINED_CONST));
+                  INT2FIX(DEFINED_CONST_FROM), ID2SYM(RNODE_COLON3(node)->nd_mid), PUSH_VAL(DEFINED_CONST));
         return;
 
         /* method dispatch */
@@ -5508,7 +6259,7 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
             (type == NODE_CALL || type == NODE_OPCALL ||
              (type == NODE_ATTRASGN && !private_recv_p(node)));
 
-        if (node->nd_args || explicit_receiver) {
+        if (get_nd_args(node) || explicit_receiver) {
             if (!lfinish[1]) {
                 lfinish[1] = NEW_LABEL(line);
             }
@@ -5516,31 +6267,31 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
                 lfinish[2] = NEW_LABEL(line);
             }
         }
-        if (node->nd_args) {
-            defined_expr0(iseq, ret, node->nd_args, lfinish, Qfalse, false);
+        if (get_nd_args(node)) {
+            defined_expr0(iseq, ret, get_nd_args(node), lfinish, Qfalse, false);
             ADD_INSNL(ret, line_node, branchunless, lfinish[1]);
         }
         if (explicit_receiver) {
-            defined_expr0(iseq, ret, node->nd_recv, lfinish, Qfalse, true);
-            switch (nd_type(node->nd_recv)) {
+            defined_expr0(iseq, ret, get_nd_recv(node), lfinish, Qfalse, true);
+            switch (nd_type(get_nd_recv(node))) {
               case NODE_CALL:
               case NODE_OPCALL:
               case NODE_VCALL:
               case NODE_FCALL:
               case NODE_ATTRASGN:
                 ADD_INSNL(ret, line_node, branchunless, lfinish[2]);
-                compile_call(iseq, ret, node->nd_recv, nd_type(node->nd_recv), line_node, 0, true);
+                compile_call(iseq, ret, get_nd_recv(node), nd_type(get_nd_recv(node)), line_node, 0, true);
                 break;
               default:
                 ADD_INSNL(ret, line_node, branchunless, lfinish[1]);
-                NO_CHECK(COMPILE(ret, "defined/recv", node->nd_recv));
+                NO_CHECK(COMPILE(ret, "defined/recv", get_nd_recv(node)));
                 break;
             }
             if (keep_result) {
                 ADD_INSN(ret, line_node, dup);
             }
             ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_METHOD),
-                      ID2SYM(node->nd_mid), PUSH_VAL(DEFINED_METHOD));
+                      ID2SYM(get_node_call_nd_mid(node)), PUSH_VAL(DEFINED_METHOD));
         }
         else {
             ADD_INSN(ret, line_node, putself);
@@ -5548,7 +6299,7 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
                 ADD_INSN(ret, line_node, dup);
             }
             ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_FUNC),
-                      ID2SYM(node->nd_mid), PUSH_VAL(DEFINED_METHOD));
+                      ID2SYM(get_node_call_nd_mid(node)), PUSH_VAL(DEFINED_METHOD));
         }
         return;
       }
@@ -5557,13 +6308,14 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
         ADD_INSN(ret, line_node, putnil);
         ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_YIELD), 0,
                   PUSH_VAL(DEFINED_YIELD));
+        iseq_set_use_block(ISEQ_BODY(iseq)->local_iseq);
         return;
 
       case NODE_BACK_REF:
       case NODE_NTH_REF:
         ADD_INSN(ret, line_node, putnil);
         ADD_INSN3(ret, line_node, defined, INT2FIX(DEFINED_REF),
-                  INT2FIX((node->nd_nth << 1) | (type == NODE_BACK_REF)),
+                  INT2FIX((RNODE_BACK_REF(node)->nd_nth << 1) | (type == NODE_BACK_REF)),
                   PUSH_VAL(DEFINED_GVAR));
         return;
 
@@ -5586,11 +6338,12 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
       case NODE_IASGN:
       case NODE_CDECL:
       case NODE_CVASGN:
+      case NODE_OP_CDECL:
         expr_type = DEFINED_ASGN;
         break;
     }
 
-    assert(expr_type != DEFINED_NOT_DEFINED);
+    RUBY_ASSERT(expr_type != DEFINED_NOT_DEFINED);
 
     if (needstr != Qfalse) {
         VALUE str = rb_iseq_defined_string(expr_type);
@@ -5604,14 +6357,13 @@ defined_expr0(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
 static void
 build_defined_rescue_iseq(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const void *unused)
 {
-    NODE dummy_line_node = generate_dummy_line_node(0, -1);
-    ADD_INSN(ret, &dummy_line_node, putnil);
+    ADD_SYNTHETIC_INSN(ret, 0, -1, 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)
+             const NODE *const node, LABEL **lfinish, VALUE needstr, bool ignore)
 {
     LINK_ELEMENT *lcur = ret->last;
     defined_expr0(iseq, ret, node, lfinish, needstr, false);
@@ -5622,24 +6374,26 @@ defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret,
         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,
+        rescue = NEW_CHILD_ISEQ_WITH_CALLBACK(ifunc,
                                               rb_str_concat(rb_str_new2("defined guard in "),
                                                             ISEQ_BODY(iseq)->location.label),
-                                              iseq, ISEQ_TYPE_RESCUE, 0);
+                                              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]);
+        if (!ignore) {
+            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)
+compile_defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, VALUE needstr, bool ignore)
 {
     const int line = nd_line(node);
     const NODE *line_node = node;
-    if (!node->nd_head) {
+    if (!RNODE_DEFINED(node)->nd_head) {
         VALUE str = rb_iseq_defined_string(DEFINED_NIL);
         ADD_INSN1(ret, line_node, putobject, str);
     }
@@ -5649,9 +6403,9 @@ compile_defined_expr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const
         lfinish[0] = NEW_LABEL(line);
         lfinish[1] = 0;
         lfinish[2] = 0;
-        defined_expr(iseq, ret, node->nd_head, lfinish, needstr);
+        defined_expr(iseq, ret, RNODE_DEFINED(node)->nd_head, lfinish, needstr, ignore);
         if (lfinish[1]) {
-            ELEM_INSERT_NEXT(last, &new_insn_body(iseq, line_node, BIN(putnil), 0)->link);
+            ELEM_INSERT_NEXT(last, &new_insn_body(iseq, nd_line(line_node), nd_node_id(line_node), BIN(putnil), 0)->link);
             ADD_INSN(ret, line_node, swap);
             if (lfinish[2]) {
                 ADD_LABEL(ret, lfinish[2]);
@@ -5690,7 +6444,7 @@ make_name_for_block(const rb_iseq_t *orig_iseq)
 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)
+                  struct ensure_range *er, const void *const node)
 {
     enl->ensure_node = node;
     enl->prev = ISEQ_COMPILE_DATA(iseq)->ensure_node_stack;	/* prev */
@@ -5732,7 +6486,7 @@ can_add_ensure_iseq(const rb_iseq_t *iseq)
 static void
 add_ensure_iseq(LINK_ANCHOR *const ret, rb_iseq_t *iseq, int is_return)
 {
-    assert(can_add_ensure_iseq(iseq));
+    RUBY_ASSERT(can_add_ensure_iseq(iseq));
 
     struct iseq_compile_data_ensure_node_stack *enlp =
         ISEQ_COMPILE_DATA(iseq)->ensure_node_stack;
@@ -5766,79 +6520,213 @@ add_ensure_iseq(LINK_ANCHOR *const ret, rb_iseq_t *iseq, int is_return)
     ADD_SEQ(ret, ensure);
 }
 
+#if RUBY_DEBUG
 static int
 check_keyword(const NODE *node)
 {
     /* This check is essentially a code clone of compile_keyword_arg. */
 
     if (nd_type_p(node, NODE_LIST)) {
-        while (node->nd_next) {
-            node = node->nd_next;
+        while (RNODE_LIST(node)->nd_next) {
+            node = RNODE_LIST(node)->nd_next;
         }
-        node = node->nd_head;
+        node = RNODE_LIST(node)->nd_head;
     }
 
     return keyword_node_p(node);
 }
+#endif
 
-static VALUE
+static bool
+keyword_node_single_splat_p(NODE *kwnode)
+{
+    RUBY_ASSERT(keyword_node_p(kwnode));
+
+    NODE *node = RNODE_HASH(kwnode)->nd_head;
+    return RNODE_LIST(node)->nd_head == NULL &&
+           RNODE_LIST(RNODE_LIST(node)->nd_next)->nd_next == NULL;
+}
+
+static void
+compile_single_keyword_splat_mutable(rb_iseq_t *iseq, LINK_ANCHOR *const args, const NODE *argn,
+                                     NODE *kwnode, unsigned int *flag_ptr)
+{
+    *flag_ptr |= VM_CALL_KW_SPLAT_MUT;
+    ADD_INSN1(args, argn, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+    ADD_INSN1(args, argn, newhash, INT2FIX(0));
+    compile_hash(iseq, args, kwnode, TRUE, FALSE);
+    ADD_SEND(args, argn, id_core_hash_merge_kwd, INT2FIX(2));
+}
+
+#define SPLATARRAY_FALSE 0
+#define SPLATARRAY_TRUE 1
+#define DUP_SINGLE_KW_SPLAT 2
+
+static int
 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)
+                unsigned int *dup_rest, unsigned int *flag_ptr, struct rb_callinfo_kwarg **kwarg_ptr)
 {
-    if (argn) {
-        switch (nd_type(argn)) {
-          case NODE_SPLAT: {
-            NO_CHECK(COMPILE(args, "args (splat)", argn->nd_head));
-            ADD_INSN1(args, argn, splatarray, RBOOL(dup_rest));
-            if (flag) *flag |= VM_CALL_ARGS_SPLAT;
-            return INT2FIX(1);
-          }
-          case NODE_ARGSCAT:
-          case NODE_ARGSPUSH: {
-            int next_is_list = (nd_type_p(argn->nd_head, NODE_LIST));
-            VALUE argc = setup_args_core(iseq, args, argn->nd_head, 1, NULL, NULL);
-            if (nd_type_p(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, argn, newarray, INT2FIX(rest_len));
+    if (!argn) return 0;
+
+    NODE *kwnode = NULL;
+
+    switch (nd_type(argn)) {
+      case NODE_LIST: {
+        // f(x, y, z)
+        int len = compile_args(iseq, args, argn, &kwnode);
+        RUBY_ASSERT(flag_ptr == NULL || (*flag_ptr & VM_CALL_ARGS_SPLAT) == 0);
+
+        if (kwnode) {
+            if (compile_keyword_arg(iseq, args, kwnode, kwarg_ptr, flag_ptr)) {
+                len -= 1;
             }
             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_p(argn, NODE_ARGSCAT)) {
-                if (next_is_list) {
-                    ADD_INSN1(args, argn, splatarray, Qtrue);
-                    return INT2FIX(FIX2INT(argc) + 1);
+                if (keyword_node_single_splat_p(kwnode) && (*dup_rest & DUP_SINGLE_KW_SPLAT)) {
+                    compile_single_keyword_splat_mutable(iseq, args, argn, kwnode, flag_ptr);
                 }
                 else {
-                    ADD_INSN1(args, argn, splatarray, Qfalse);
-                    ADD_INSN(args, argn, concatarray);
-                    return argc;
+                    compile_hash(iseq, args, kwnode, TRUE, FALSE);
                 }
             }
+        }
+
+        return len;
+      }
+      case NODE_SPLAT: {
+        // f(*a)
+        NO_CHECK(COMPILE(args, "args (splat)", RNODE_SPLAT(argn)->nd_head));
+        ADD_INSN1(args, argn, splatarray, RBOOL(*dup_rest & SPLATARRAY_TRUE));
+        if (*dup_rest & SPLATARRAY_TRUE) *dup_rest &= ~SPLATARRAY_TRUE;
+        if (flag_ptr) *flag_ptr |= VM_CALL_ARGS_SPLAT;
+        RUBY_ASSERT(flag_ptr == NULL || (*flag_ptr & VM_CALL_KW_SPLAT) == 0);
+        return 1;
+      }
+      case NODE_ARGSCAT: {
+        if (flag_ptr) *flag_ptr |= VM_CALL_ARGS_SPLAT;
+        int argc = setup_args_core(iseq, args, RNODE_ARGSCAT(argn)->nd_head, dup_rest, NULL, NULL);
+        bool args_pushed = false;
+
+        if (nd_type_p(RNODE_ARGSCAT(argn)->nd_body, NODE_LIST)) {
+            int rest_len = compile_args(iseq, args, RNODE_ARGSCAT(argn)->nd_body, &kwnode);
+            if (kwnode) rest_len--;
+            ADD_INSN1(args, argn, pushtoarray, INT2FIX(rest_len));
+            args_pushed = true;
+        }
+        else {
+            RUBY_ASSERT(!check_keyword(RNODE_ARGSCAT(argn)->nd_body));
+            NO_CHECK(COMPILE(args, "args (cat: splat)", RNODE_ARGSCAT(argn)->nd_body));
+        }
+
+        if (nd_type_p(RNODE_ARGSCAT(argn)->nd_head, NODE_LIST)) {
+            ADD_INSN1(args, argn, splatarray, RBOOL(*dup_rest & SPLATARRAY_TRUE));
+            if (*dup_rest & SPLATARRAY_TRUE) *dup_rest &= ~SPLATARRAY_TRUE;
+            argc += 1;
+        }
+        else if (!args_pushed) {
+            ADD_INSN(args, argn, concattoarray);
+        }
+
+        // f(..., *a, ..., k1:1, ...) #=> f(..., *[*a, ...], **{k1:1, ...})
+        if (kwnode) {
+            // kwsplat
+            *flag_ptr |= VM_CALL_KW_SPLAT;
+            compile_hash(iseq, args, kwnode, TRUE, FALSE);
+            argc += 1;
+        }
+
+        return argc;
+      }
+      case NODE_ARGSPUSH: {
+        if (flag_ptr) *flag_ptr |= VM_CALL_ARGS_SPLAT;
+        int argc = setup_args_core(iseq, args, RNODE_ARGSPUSH(argn)->nd_head, dup_rest, NULL, NULL);
+
+        if (nd_type_p(RNODE_ARGSPUSH(argn)->nd_body, NODE_LIST)) {
+            int rest_len = compile_args(iseq, args, RNODE_ARGSPUSH(argn)->nd_body, &kwnode);
+            if (kwnode) rest_len--;
+            ADD_INSN1(args, argn, newarray, INT2FIX(rest_len));
+            ADD_INSN1(args, argn, pushtoarray, INT2FIX(1));
+        }
+        else {
+            if (keyword_node_p(RNODE_ARGSPUSH(argn)->nd_body)) {
+                kwnode = RNODE_ARGSPUSH(argn)->nd_body;
+            }
             else {
-                ADD_INSN1(args, argn, newarray, INT2FIX(1));
-                ADD_INSN(args, argn, concatarray);
-                return argc;
+                NO_CHECK(COMPILE(args, "args (cat: splat)", RNODE_ARGSPUSH(argn)->nd_body));
+                ADD_INSN1(args, argn, pushtoarray, INT2FIX(1));
             }
-          }
-          case NODE_LIST: {
-            int len = compile_args(iseq, args, argn, keywords, flag);
-            return INT2FIX(len);
-          }
-          default: {
-            UNKNOWN_NODE("setup_arg", argn, Qnil);
-          }
         }
+
+        if (kwnode) {
+            // f(*a, k:1)
+            *flag_ptr |= VM_CALL_KW_SPLAT;
+            if (!keyword_node_single_splat_p(kwnode)) {
+                *flag_ptr |= VM_CALL_KW_SPLAT_MUT;
+                compile_hash(iseq, args, kwnode, TRUE, FALSE);
+            }
+            else if (*dup_rest & DUP_SINGLE_KW_SPLAT) {
+                compile_single_keyword_splat_mutable(iseq, args, argn, kwnode, flag_ptr);
+            }
+            else {
+                compile_hash(iseq, args, kwnode, TRUE, FALSE);
+            }
+            argc += 1;
+        }
+
+        return argc;
+      }
+      default: {
+        UNKNOWN_NODE("setup_arg", argn, Qnil);
+      }
+    }
+}
+
+static void
+setup_args_splat_mut(unsigned int *flag, int dup_rest, int initial_dup_rest)
+{
+    if ((*flag & VM_CALL_ARGS_SPLAT) && dup_rest != initial_dup_rest) {
+        *flag |= VM_CALL_ARGS_SPLAT_MUT;
+    }
+}
+
+static bool
+setup_args_dup_rest_p(const NODE *argn)
+{
+    switch(nd_type(argn)) {
+      case NODE_LVAR:
+      case NODE_DVAR:
+      case NODE_GVAR:
+      case NODE_IVAR:
+      case NODE_CVAR:
+      case NODE_CONST:
+      case NODE_COLON3:
+      case NODE_INTEGER:
+      case NODE_FLOAT:
+      case NODE_RATIONAL:
+      case NODE_IMAGINARY:
+      case NODE_STR:
+      case NODE_SYM:
+      case NODE_REGX:
+      case NODE_SELF:
+      case NODE_NIL:
+      case NODE_TRUE:
+      case NODE_FALSE:
+      case NODE_LAMBDA:
+      case NODE_NTH_REF:
+      case NODE_BACK_REF:
+        return false;
+      case NODE_COLON2:
+        return setup_args_dup_rest_p(RNODE_COLON2(argn)->nd_head);
+      case NODE_LIST:
+        while (argn) {
+            if (setup_args_dup_rest_p(RNODE_LIST(argn)->nd_head)) {
+                return true;
+            }
+            argn = RNODE_LIST(argn)->nd_next;
+        }
+        return false;
+      default:
+        return true;
     }
-    return INT2FIX(0);
 }
 
 static VALUE
@@ -5846,13 +6734,94 @@ setup_args(rb_iseq_t *iseq, LINK_ANCHOR *const args, const NODE *argn,
            unsigned int *flag, struct rb_callinfo_kwarg **keywords)
 {
     VALUE ret;
+    unsigned int dup_rest = SPLATARRAY_TRUE, initial_dup_rest;
+
+    if (argn) {
+        const NODE *check_arg = nd_type_p(argn, NODE_BLOCK_PASS) ?
+            RNODE_BLOCK_PASS(argn)->nd_head : argn;
+
+        if (check_arg) {
+            switch(nd_type(check_arg)) {
+              case(NODE_SPLAT):
+                // avoid caller side array allocation for f(*arg)
+                dup_rest = SPLATARRAY_FALSE;
+                break;
+              case(NODE_ARGSCAT):
+                // avoid caller side array allocation for f(1, *arg)
+                dup_rest = !nd_type_p(RNODE_ARGSCAT(check_arg)->nd_head, NODE_LIST);
+                break;
+              case(NODE_ARGSPUSH):
+                // avoid caller side array allocation for f(*arg, **hash) and f(1, *arg, **hash)
+                dup_rest = !((nd_type_p(RNODE_ARGSPUSH(check_arg)->nd_head, NODE_SPLAT) ||
+                    (nd_type_p(RNODE_ARGSPUSH(check_arg)->nd_head, NODE_ARGSCAT) &&
+                     nd_type_p(RNODE_ARGSCAT(RNODE_ARGSPUSH(check_arg)->nd_head)->nd_head, NODE_LIST))) &&
+                    nd_type_p(RNODE_ARGSPUSH(check_arg)->nd_body, NODE_HASH) &&
+                    !RNODE_HASH(RNODE_ARGSPUSH(check_arg)->nd_body)->nd_brace);
+
+                if (dup_rest == SPLATARRAY_FALSE) {
+                    // require allocation for keyword key/value/splat that may modify splatted argument
+                    NODE *node = RNODE_HASH(RNODE_ARGSPUSH(check_arg)->nd_body)->nd_head;
+                    while (node) {
+                        NODE *key_node = RNODE_LIST(node)->nd_head;
+                        if (key_node && setup_args_dup_rest_p(key_node)) {
+                            dup_rest = SPLATARRAY_TRUE;
+                            break;
+                        }
+
+                        node = RNODE_LIST(node)->nd_next;
+                        NODE *value_node = RNODE_LIST(node)->nd_head;
+                        if (setup_args_dup_rest_p(value_node)) {
+                            dup_rest = SPLATARRAY_TRUE;
+                            break;
+                        }
+
+                        node = RNODE_LIST(node)->nd_next;
+                    }
+                }
+                break;
+              default:
+                break;
+            }
+        }
+
+        if (check_arg != argn && setup_args_dup_rest_p(RNODE_BLOCK_PASS(argn)->nd_body)) {
+            // for block pass that may modify splatted argument, dup rest and kwrest if given
+            dup_rest = SPLATARRAY_TRUE | DUP_SINGLE_KW_SPLAT;
+        }
+    }
+    initial_dup_rest = dup_rest;
+
     if (argn && nd_type_p(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 (RNODE_BLOCK_PASS(argn)->forwarding && ISEQ_BODY(ISEQ_BODY(iseq)->local_iseq)->param.flags.forwardable) {
+            int idx = ISEQ_BODY(ISEQ_BODY(iseq)->local_iseq)->local_table_size;// - get_local_var_idx(iseq, idDot3);
+
+            RUBY_ASSERT(nd_type_p(RNODE_BLOCK_PASS(argn)->nd_head, NODE_ARGSPUSH));
+            const NODE * arg_node =
+                RNODE_ARGSPUSH(RNODE_BLOCK_PASS(argn)->nd_head)->nd_head;
+
+            int argc = 0;
+
+            // Only compile leading args:
+            //   foo(x, y, ...)
+            //       ^^^^
+            if (nd_type_p(arg_node, NODE_ARGSCAT)) {
+                argc += setup_args_core(iseq, args, RNODE_ARGSCAT(arg_node)->nd_head, &dup_rest, flag, keywords);
+            }
+
+            *flag |= VM_CALL_FORWARDING;
+
+            ADD_GETLOCAL(args, argn, idx, get_lvar_level(iseq));
+            setup_args_splat_mut(flag, dup_rest, initial_dup_rest);
+            return INT2FIX(argc);
+        }
+        else {
+            *flag |= VM_CALL_ARGS_BLOCKARG;
+
+            NO_CHECK(COMPILE(arg_block, "block", RNODE_BLOCK_PASS(argn)->nd_body));
+        }
 
         if (LIST_INSN_SIZE_ONE(arg_block)) {
             LINK_ELEMENT *elem = FIRST_ELEMENT(arg_block);
@@ -5861,15 +6830,15 @@ setup_args(rb_iseq_t *iseq, LINK_ANCHOR *const args, const NODE *argn,
                 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);
+        ret = INT2FIX(setup_args_core(iseq, args, RNODE_BLOCK_PASS(argn)->nd_head, &dup_rest, flag, keywords));
         ADD_SEQ(args, arg_block);
     }
     else {
-        ret = setup_args_core(iseq, args, argn, 0, flag, keywords);
+        ret = INT2FIX(setup_args_core(iseq, args, argn, &dup_rest, flag, keywords));
     }
+    setup_args_splat_mut(flag, dup_rest, initial_dup_rest);
     return ret;
 }
 
@@ -5884,7 +6853,7 @@ build_postexe_iseq(rb_iseq_t *iseq, LINK_ANCHOR *ret, const void *ptr)
     ADD_INSN1(ret, body, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
     ADD_CALL_WITH_BLOCK(ret, body, id_core_set_postexe, argc, block);
     RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)block);
-    iseq_set_local_table(iseq, 0);
+    iseq_set_local_table(iseq, 0, 0);
 }
 
 static void
@@ -5904,19 +6873,19 @@ compile_named_capture_assign(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE
     ADD_INSN(ret, line_node, dup);
     ADD_INSNL(ret, line_node, branchunless, fail_label);
 
-    for (vars = node; vars; vars = vars->nd_next) {
+    for (vars = node; vars; vars = RNODE_BLOCK(vars)->nd_next) {
         INSN *cap;
-        if (vars->nd_next) {
+        if (RNODE_BLOCK(vars)->nd_next) {
             ADD_INSN(ret, line_node, dup);
         }
         last = ret->last;
-        NO_CHECK(COMPILE_POPPED(ret, "capture", vars->nd_head));
+        NO_CHECK(COMPILE_POPPED(ret, "capture", RNODE_BLOCK(vars)->nd_head));
         last = last->next; /* putobject :var */
-        cap = new_insn_send(iseq, line_node, idAREF, INT2FIX(1),
+        cap = new_insn_send(iseq, nd_line(line_node), nd_node_id(line_node), 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) {
+        if (!RNODE_BLOCK(vars)->nd_next && vars == node) {
             /* only one name */
             DECL_ANCHOR(nom);
 
@@ -5937,9 +6906,9 @@ compile_named_capture_assign(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE
     ADD_INSNL(ret, line_node, jump, end_label);
     ADD_LABEL(ret, fail_label);
     ADD_INSN(ret, line_node, pop);
-    for (vars = node; vars; vars = vars->nd_next) {
+    for (vars = node; vars; vars = RNODE_BLOCK(vars)->nd_next) {
         last = ret->last;
-        NO_CHECK(COMPILE_POPPED(ret, "capture", vars->nd_head));
+        NO_CHECK(COMPILE_POPPED(ret, "capture", RNODE_BLOCK(vars)->nd_head));
         last = last->next; /* putobject :var */
         ((INSN*)last)->insn_id = BIN(putnil);
         ((INSN*)last)->operand_size = 0;
@@ -5952,8 +6921,10 @@ 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_LINE:
+        return TRUE;
+      case NODE_INTEGER:
+        return TRUE;
       case NODE_NIL:
         return TRUE;
       default:
@@ -5961,69 +6932,70 @@ optimizable_range_item_p(const NODE *n)
     }
 }
 
+static VALUE
+optimized_range_item(const NODE *n)
+{
+    switch (nd_type(n)) {
+      case NODE_LINE:
+        return rb_node_line_lineno_val(n);
+      case NODE_INTEGER:
+        return rb_node_integer_literal_val(n);
+      case NODE_FLOAT:
+        return rb_node_float_literal_val(n);
+      case NODE_RATIONAL:
+        return rb_node_rational_literal_val(n);
+      case NODE_IMAGINARY:
+        return rb_node_imaginary_literal_val(n);
+      case NODE_NIL:
+        return Qnil;
+      default:
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(n)));
+    }
+}
+
 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(iseq);
-    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 NODE *const node_body = type == NODE_IF ? RNODE_IF(node)->nd_body : RNODE_UNLESS(node)->nd_else;
+    const NODE *const node_else = type == NODE_IF ? RNODE_IF(node)->nd_else : RNODE_UNLESS(node)->nd_body;
 
     const int line = nd_line(node);
     const NODE *line_node = 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);
+    NODE *cond = RNODE_IF(node)->nd_cond;
+    if (nd_type(cond) == NODE_BLOCK) {
+        cond = RNODE_BLOCK(cond)->nd_head;
     }
 
+    CHECK(compile_branch_condition(iseq, cond_seq, cond, then_label, else_label));
     ADD_SEQ(ret, cond_seq);
 
     if (then_label->refcnt && else_label->refcnt) {
-        branches = decl_branch_base(iseq, node, type == NODE_IF ? "if" : "unless");
+        branches = decl_branch_base(iseq, PTR2NUM(node), nd_code_loc(node), type == NODE_IF ? "if" : "unless");
     }
 
     if (then_label->refcnt) {
         ADD_LABEL(ret, then_label);
+
+        DECL_ANCHOR(then_seq);
+        INIT_ANCHOR(then_seq);
+        CHECK(COMPILE_(then_seq, "then", node_body, popped));
+
         if (else_label->refcnt) {
+            const NODE *const coverage_node = node_body ? node_body : node;
             add_trace_branch_coverage(
                 iseq,
                 ret,
-                node_body ? node_body : node,
+                nd_code_loc(coverage_node),
+                nd_node_id(coverage_node),
                 0,
                 type == NODE_IF ? "then" : "else",
                 branches);
@@ -6038,11 +7010,18 @@ compile_if(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int
 
     if (else_label->refcnt) {
         ADD_LABEL(ret, else_label);
+
+        DECL_ANCHOR(else_seq);
+        INIT_ANCHOR(else_seq);
+        CHECK(COMPILE_(else_seq, "else", node_else, popped));
+
         if (then_label->refcnt) {
+            const NODE *const coverage_node = node_else ? node_else : node;
             add_trace_branch_coverage(
                 iseq,
                 ret,
-                node_else ? node_else : node,
+                nd_code_loc(coverage_node),
+                nd_node_id(coverage_node),
                 1,
                 type == NODE_IF ? "else" : "then",
                 branches);
@@ -6080,11 +7059,11 @@ compile_case(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_nod
 
     RHASH_TBL_RAW(literals)->type = &cdhash_type;
 
-    CHECK(COMPILE(head, "case base", node->nd_head));
+    CHECK(COMPILE(head, "case base", RNODE_CASE(node)->nd_head));
 
-    branches = decl_branch_base(iseq, node, "case");
+    branches = decl_branch_base(iseq, PTR2NUM(node), nd_code_loc(node), "case");
 
-    node = node->nd_body;
+    node = RNODE_CASE(node)->nd_body;
     EXPECT_NODE("NODE_CASE", node, NODE_WHEN, COMPILE_NG);
     type = nd_type(node);
     line = nd_line(node);
@@ -6101,17 +7080,21 @@ compile_case(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_nod
         l1 = NEW_LABEL(line);
         ADD_LABEL(body_seq, l1);
         ADD_INSN(body_seq, line_node, pop);
+
+        const NODE *const coverage_node = RNODE_WHEN(node)->nd_body ? RNODE_WHEN(node)->nd_body : node;
         add_trace_branch_coverage(
                 iseq,
                 body_seq,
-                node->nd_body ? node->nd_body : node,
+                nd_code_loc(coverage_node),
+                nd_node_id(coverage_node),
                 branch_id++,
                 "when",
                 branches);
-        CHECK(COMPILE_(body_seq, "when body", node->nd_body, popped));
+
+        CHECK(COMPILE_(body_seq, "when body", RNODE_WHEN(node)->nd_body, popped));
         ADD_INSNL(body_seq, line_node, jump, endlabel);
 
-        vals = node->nd_head;
+        vals = RNODE_WHEN(node)->nd_head;
         if (vals) {
             switch (nd_type(vals)) {
               case NODE_LIST:
@@ -6132,7 +7115,7 @@ compile_case(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_nod
             EXPECT_NODE_NONULL("NODE_CASE", node, NODE_LIST, COMPILE_NG);
         }
 
-        node = node->nd_next;
+        node = RNODE_WHEN(node)->nd_next;
         if (!node) {
             break;
         }
@@ -6144,7 +7127,7 @@ compile_case(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_nod
     if (node) {
         ADD_LABEL(cond_seq, elselabel);
         ADD_INSN(cond_seq, line_node, pop);
-        add_trace_branch_coverage(iseq, cond_seq, node, branch_id, "else", branches);
+        add_trace_branch_coverage(iseq, cond_seq, nd_code_loc(node), nd_node_id(node), branch_id, "else", branches);
         CHECK(COMPILE_(cond_seq, "else", node, popped));
         ADD_INSNL(cond_seq, line_node, jump, endlabel);
     }
@@ -6152,7 +7135,7 @@ compile_case(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_nod
         debugs("== else (implicit)\n");
         ADD_LABEL(cond_seq, elselabel);
         ADD_INSN(cond_seq, orig_node, pop);
-        add_trace_branch_coverage(iseq, cond_seq, orig_node, branch_id, "else", branches);
+        add_trace_branch_coverage(iseq, cond_seq, nd_code_loc(orig_node), nd_node_id(orig_node), branch_id, "else", branches);
         if (!popped) {
             ADD_INSN(cond_seq, orig_node, putnil);
         }
@@ -6161,6 +7144,7 @@ compile_case(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_nod
 
     if (only_special_literals && ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction) {
         ADD_INSN(ret, orig_node, dup);
+        rb_obj_hide(literals);
         ADD_INSN2(ret, orig_node, opt_case_dispatch, literals, elselabel);
         RB_OBJ_WRITTEN(iseq, Qundef, literals);
         LABEL_REF(elselabel);
@@ -6177,13 +7161,13 @@ compile_case2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
 {
     const NODE *vals;
     const NODE *val;
-    const NODE *node = orig_node->nd_body;
+    const NODE *node = RNODE_CASE2(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");
+    branches = decl_branch_base(iseq, PTR2NUM(orig_node), nd_code_loc(orig_node), "case");
 
     INIT_ANCHOR(body_seq);
     endlabel = NEW_LABEL(nd_line(node));
@@ -6192,17 +7176,21 @@ compile_case2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
         const int line = nd_line(node);
         LABEL *l1 = NEW_LABEL(line);
         ADD_LABEL(body_seq, l1);
+
+        const NODE *const coverage_node = RNODE_WHEN(node)->nd_body ? RNODE_WHEN(node)->nd_body : node;
         add_trace_branch_coverage(
                 iseq,
                 body_seq,
-                node->nd_body ? node->nd_body : node,
+                nd_code_loc(coverage_node),
+                nd_node_id(coverage_node),
                 branch_id++,
                 "when",
                 branches);
-        CHECK(COMPILE_(body_seq, "when", node->nd_body, popped));
+
+        CHECK(COMPILE_(body_seq, "when", RNODE_WHEN(node)->nd_body, popped));
         ADD_INSNL(body_seq, node, jump, endlabel);
 
-        vals = node->nd_head;
+        vals = RNODE_WHEN(node)->nd_head;
         if (!vals) {
             EXPECT_NODE_NONULL("NODE_WHEN", node, NODE_LIST, COMPILE_NG);
         }
@@ -6210,12 +7198,12 @@ compile_case2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
           case NODE_LIST:
             while (vals) {
                 LABEL *lnext;
-                val = vals->nd_head;
+                val = RNODE_LIST(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;
+                vals = RNODE_LIST(vals)->nd_next;
             }
             break;
           case NODE_SPLAT:
@@ -6229,13 +7217,15 @@ compile_case2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
           default:
             UNKNOWN_NODE("NODE_WHEN", vals, COMPILE_NG);
         }
-        node = node->nd_next;
+        node = RNODE_WHEN(node)->nd_next;
     }
     /* else */
+    const NODE *const coverage_node = node ? node : orig_node;
     add_trace_branch_coverage(
         iseq,
         ret,
-        node ? node : orig_node,
+        nd_code_loc(coverage_node),
+        nd_node_id(coverage_node),
         branch_id,
         "else",
         branches);
@@ -6321,14 +7311,13 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
          * 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 NODE *args = RNODE_ARYPTN(node)->pre_args;
+        const int pre_args_num = RNODE_ARYPTN(node)->pre_args ? rb_long2int(RNODE_LIST(RNODE_ARYPTN(node)->pre_args)->as.nd_alen) : 0;
+        const int post_args_num = RNODE_ARYPTN(node)->post_args ? rb_long2int(RNODE_LIST(RNODE_ARYPTN(node)->post_args)->as.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));
+        const int use_rest_num = RNODE_ARYPTN(node)->rest_arg && (NODE_NAMED_REST_P(RNODE_ARYPTN(node)->rest_arg) ||
+                                                      (!NODE_NAMED_REST_P(RNODE_ARYPTN(node)->rest_arg) && post_args_num > 0));
 
         LABEL *match_failed, *type_error, *deconstruct, *deconstructed;
         int i;
@@ -6352,10 +7341,10 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
         ADD_INSN(ret, line_node, dup);
         ADD_SEND(ret, line_node, idLength, INT2FIX(0));
         ADD_INSN1(ret, line_node, putobject, INT2FIX(min_argc));
-        ADD_SEND(ret, line_node, apinfo->rest_arg ? idGE : idEq, INT2FIX(1)); // (1)
+        ADD_SEND(ret, line_node, RNODE_ARYPTN(node)->rest_arg ? idGE : idEq, INT2FIX(1)); // (1)
         if (in_single_pattern) {
             CHECK(iseq_compile_pattern_set_length_errmsg(iseq, ret, node,
-                                                         apinfo->rest_arg ? rb_fstring_lit("%p length mismatch (given %p, expected %p+)") :
+                                                         RNODE_ARYPTN(node)->rest_arg ? rb_fstring_lit("%p length mismatch (given %p, expected %p+)") :
                                                                             rb_fstring_lit("%p length mismatch (given %p, expected %p)"),
                                                          INT2FIX(min_argc), base_index + 1 /* (1) */));
         }
@@ -6365,12 +7354,12 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
             ADD_INSN(ret, line_node, dup);
             ADD_INSN1(ret, line_node, putobject, INT2FIX(i));
             ADD_SEND(ret, line_node, idAREF, INT2FIX(1)); // (2)
-            CHECK(iseq_compile_pattern_match(iseq, ret, args->nd_head, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (2) */, false));
-            args = args->nd_next;
+            CHECK(iseq_compile_pattern_match(iseq, ret, RNODE_LIST(args)->nd_head, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (2) */, false));
+            args = RNODE_LIST(args)->nd_next;
         }
 
-        if (apinfo->rest_arg) {
-            if (NODE_NAMED_REST_P(apinfo->rest_arg)) {
+        if (RNODE_ARYPTN(node)->rest_arg) {
+            if (NODE_NAMED_REST_P(RNODE_ARYPTN(node)->rest_arg)) {
                 ADD_INSN(ret, line_node, dup);
                 ADD_INSN1(ret, line_node, putobject, INT2FIX(pre_args_num));
                 ADD_INSN1(ret, line_node, topn, INT2FIX(1));
@@ -6380,7 +7369,7 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
                 ADD_INSN1(ret, line_node, setn, INT2FIX(4));
                 ADD_SEND(ret, line_node, idAREF, INT2FIX(2)); // (3)
 
-                CHECK(iseq_compile_pattern_match(iseq, ret, apinfo->rest_arg, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (3) */, false));
+                CHECK(iseq_compile_pattern_match(iseq, ret, RNODE_ARYPTN(node)->rest_arg, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (3) */, false));
             }
             else {
                 if (post_args_num > 0) {
@@ -6394,7 +7383,7 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
             }
         }
 
-        args = apinfo->post_args;
+        args = RNODE_ARYPTN(node)->post_args;
         for (i = 0; i < post_args_num; i++) {
             ADD_INSN(ret, line_node, dup);
 
@@ -6403,8 +7392,8 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
             ADD_SEND(ret, line_node, idPLUS, INT2FIX(1));
 
             ADD_SEND(ret, line_node, idAREF, INT2FIX(1)); // (4)
-            CHECK(iseq_compile_pattern_match(iseq, ret, args->nd_head, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (4) */, false));
-            args = args->nd_next;
+            CHECK(iseq_compile_pattern_match(iseq, ret, RNODE_LIST(args)->nd_head, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (4) */, false));
+            args = RNODE_LIST(args)->nd_next;
         }
 
         ADD_INSN(ret, line_node, pop);
@@ -6482,9 +7471,8 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
          * 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;
+        const NODE *args = RNODE_FNDPTN(node)->args;
+        const int args_num = RNODE_FNDPTN(node)->args ? rb_long2int(RNODE_LIST(RNODE_FNDPTN(node)->args)->as.nd_alen) : 0;
 
         LABEL *match_failed, *type_error, *deconstruct, *deconstructed;
         match_failed = NEW_LABEL(line);
@@ -6537,25 +7525,25 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
                 }
                 ADD_SEND(ret, line_node, idAREF, INT2FIX(1)); // (5)
 
-                CHECK(iseq_compile_pattern_match(iseq, ret, args->nd_head, next_loop, in_single_pattern, in_alt_pattern, base_index + 4 /* (2), (3), (4), (5) */, false));
-                args = args->nd_next;
+                CHECK(iseq_compile_pattern_match(iseq, ret, RNODE_LIST(args)->nd_head, next_loop, in_single_pattern, in_alt_pattern, base_index + 4 /* (2), (3), (4), (5) */, false));
+                args = RNODE_LIST(args)->nd_next;
             }
 
-            if (NODE_NAMED_REST_P(fpinfo->pre_rest_arg)) {
+            if (NODE_NAMED_REST_P(RNODE_FNDPTN(node)->pre_rest_arg)) {
                 ADD_INSN1(ret, line_node, topn, INT2FIX(3));
                 ADD_INSN1(ret, line_node, putobject, INT2FIX(0));
                 ADD_INSN1(ret, line_node, topn, INT2FIX(2));
                 ADD_SEND(ret, line_node, idAREF, INT2FIX(2)); // (6)
-                CHECK(iseq_compile_pattern_match(iseq, ret, fpinfo->pre_rest_arg, find_failed, in_single_pattern, in_alt_pattern, base_index + 4 /* (2), (3), (4), (6) */, false));
+                CHECK(iseq_compile_pattern_match(iseq, ret, RNODE_FNDPTN(node)->pre_rest_arg, find_failed, in_single_pattern, in_alt_pattern, base_index + 4 /* (2), (3), (4), (6) */, false));
             }
-            if (NODE_NAMED_REST_P(fpinfo->post_rest_arg)) {
+            if (NODE_NAMED_REST_P(RNODE_FNDPTN(node)->post_rest_arg)) {
                 ADD_INSN1(ret, line_node, topn, INT2FIX(3));
                 ADD_INSN1(ret, line_node, topn, INT2FIX(1));
                 ADD_INSN1(ret, line_node, putobject, INT2FIX(args_num));
                 ADD_SEND(ret, line_node, idPLUS, INT2FIX(1));
                 ADD_INSN1(ret, line_node, topn, INT2FIX(3));
                 ADD_SEND(ret, line_node, idAREF, INT2FIX(2)); // (7)
-                CHECK(iseq_compile_pattern_match(iseq, ret, fpinfo->post_rest_arg, find_failed, in_single_pattern, in_alt_pattern, base_index + 4 /* (2), (3),(4), (7) */, false));
+                CHECK(iseq_compile_pattern_match(iseq, ret, RNODE_FNDPTN(node)->post_rest_arg, find_failed, in_single_pattern, in_alt_pattern, base_index + 4 /* (2), (3),(4), (7) */, false));
             }
             ADD_INSNL(ret, line_node, jump, find_succeeded);
 
@@ -6669,12 +7657,12 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
         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);
+        if (RNODE_HSHPTN(node)->nd_pkwargs && !RNODE_HSHPTN(node)->nd_pkwrestarg) {
+            const NODE *kw_args = RNODE_HASH(RNODE_HSHPTN(node)->nd_pkwargs)->nd_head;
+            keys = rb_ary_new_capa(kw_args ? RNODE_LIST(kw_args)->as.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;
+                rb_ary_push(keys, get_symbol_value(iseq, RNODE_LIST(kw_args)->nd_head));
+                kw_args = RNODE_LIST(RNODE_LIST(kw_args)->nd_next)->nd_next;
             }
         }
 
@@ -6692,6 +7680,7 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
             ADD_INSN(ret, line_node, putnil);
         }
         else {
+            RB_OBJ_SET_FROZEN_SHAREABLE(keys);
             ADD_INSN1(ret, line_node, duparray, keys);
             RB_OBJ_WRITTEN(iseq, Qundef, rb_obj_hide(keys));
         }
@@ -6701,28 +7690,23 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
         ADD_INSN1(ret, line_node, checktype, INT2FIX(T_HASH));
         ADD_INSNL(ret, line_node, branchunless, type_error);
 
-        if (node->nd_pkwrestarg) {
+        if (RNODE_HSHPTN(node)->nd_pkwrestarg) {
             ADD_SEND(ret, line_node, rb_intern("dup"), INT2FIX(0));
         }
 
-        if (node->nd_pkwargs) {
+        if (RNODE_HSHPTN(node)->nd_pkwargs) {
             int i;
             int keys_num;
             const NODE *args;
-            args = node->nd_pkwargs->nd_head;
+            args = RNODE_HASH(RNODE_HSHPTN(node)->nd_pkwargs)->nd_head;
             if (args) {
                 DECL_ANCHOR(match_values);
                 INIT_ANCHOR(match_values);
-                keys_num = rb_long2int(args->nd_alen) / 2;
+                keys_num = rb_long2int(RNODE_LIST(args)->as.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_p(key_node, NODE_LIT)) {
-                        UNKNOWN_NODE("NODE_IN", key_node, COMPILE_NG);
-                    }
-                    key = key_node->nd_lit;
+                    NODE *key_node = RNODE_LIST(args)->nd_head;
+                    NODE *value_node = RNODE_LIST(RNODE_LIST(args)->nd_next)->nd_head;
+                    VALUE key = get_symbol_value(iseq, key_node);
 
                     ADD_INSN(ret, line_node, dup);
                     ADD_INSN1(ret, line_node, putobject, key);
@@ -6734,7 +7718,8 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
                         ADD_INSN(ret, line_node, dup);
                         ADD_INSNL(ret, line_node, branchif, match_succeeded);
 
-                        ADD_INSN1(ret, line_node, putobject, rb_str_freeze(rb_sprintf("key not found: %+"PRIsVALUE, key))); // (4)
+                        VALUE str = rb_str_freeze(rb_sprintf("key not found: %+"PRIsVALUE, key));
+                        ADD_INSN1(ret, line_node, putobject, RB_OBJ_SET_SHAREABLE(str)); // (4)
                         ADD_INSN1(ret, line_node, setn, INT2FIX(base_index + CASE3_BI_OFFSET_ERROR_STRING + 2 /* (3), (4) */));
                         ADD_INSN1(ret, line_node, putobject, Qtrue); // (5)
                         ADD_INSN1(ret, line_node, setn, INT2FIX(base_index + CASE3_BI_OFFSET_KEY_ERROR_P + 3 /* (3), (4), (5) */));
@@ -6751,9 +7736,9 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
 
                     ADD_INSN(match_values, line_node, dup);
                     ADD_INSN1(match_values, line_node, putobject, key);
-                    ADD_SEND(match_values, line_node, node->nd_pkwrestarg ? rb_intern("delete") : idAREF, INT2FIX(1)); // (8)
+                    ADD_SEND(match_values, line_node, RNODE_HSHPTN(node)->nd_pkwrestarg ? rb_intern("delete") : idAREF, INT2FIX(1)); // (8)
                     CHECK(iseq_compile_pattern_match(iseq, match_values, value_node, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (8) */, false));
-                    args = args->nd_next->nd_next;
+                    args = RNODE_LIST(RNODE_LIST(args)->nd_next)->nd_next;
                 }
                 ADD_SEQ(ret, match_values);
             }
@@ -6767,8 +7752,8 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
             ADD_INSNL(ret, line_node, branchunless, match_failed);
         }
 
-        if (node->nd_pkwrestarg) {
-            if (node->nd_pkwrestarg == NODE_SPECIAL_NO_REST_KEYWORD) {
+        if (RNODE_HSHPTN(node)->nd_pkwrestarg) {
+            if (RNODE_HSHPTN(node)->nd_pkwrestarg == NODE_SPECIAL_NO_REST_KEYWORD) {
                 ADD_INSN(ret, line_node, dup);
                 ADD_SEND(ret, line_node, idEmptyP, INT2FIX(0)); // (10)
                 if (in_single_pattern) {
@@ -6778,7 +7763,7 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
             }
             else {
                 ADD_INSN(ret, line_node, dup); // (11)
-                CHECK(iseq_compile_pattern_match(iseq, ret, node->nd_pkwrestarg, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (11) */, false));
+                CHECK(iseq_compile_pattern_match(iseq, ret, RNODE_HSHPTN(node)->nd_pkwrestarg, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (11) */, false));
             }
         }
 
@@ -6798,7 +7783,15 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
         ADD_INSNL(ret, line_node, jump, unmatched);
         break;
       }
-      case NODE_LIT:
+      case NODE_SYM:
+      case NODE_REGX:
+      case NODE_LINE:
+      case NODE_INTEGER:
+      case NODE_FLOAT:
+      case NODE_RATIONAL:
+      case NODE_IMAGINARY:
+      case NODE_FILE:
+      case NODE_ENCODING:
       case NODE_STR:
       case NODE_XSTR:
       case NODE_DSTR:
@@ -6822,6 +7815,8 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
       case NODE_COLON2:
       case NODE_COLON3:
       case NODE_BEGIN:
+      case NODE_BLOCK:
+      case NODE_ONCE:
         CHECK(COMPILE(ret, "case in literal", node)); // (1)
         if (in_single_pattern) {
             ADD_INSN1(ret, line_node, dupn, INT2FIX(2));
@@ -6835,7 +7830,7 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
         break;
       case NODE_LASGN: {
         struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
-        ID id = node->nd_vid;
+        ID id = RNODE_LASGN(node)->nd_vid;
         int idx = ISEQ_BODY(body->local_iseq)->local_table_size - get_local_var_idx(iseq, id);
 
         if (in_alt_pattern) {
@@ -6853,7 +7848,7 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
       }
       case NODE_DASGN: {
         int idx, lv, ls;
-        ID id = node->nd_vid;
+        ID id = RNODE_DASGN(node)->nd_vid;
 
         idx = get_dyna_var_idx(iseq, id, &lv, &ls);
 
@@ -6879,8 +7874,8 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
       case NODE_UNLESS: {
         LABEL *match_failed;
         match_failed = unmatched;
-        CHECK(iseq_compile_pattern_match(iseq, ret, node->nd_body, unmatched, in_single_pattern, in_alt_pattern, base_index, use_deconstructed_cache));
-        CHECK(COMPILE(ret, "case in if", node->nd_cond));
+        CHECK(iseq_compile_pattern_match(iseq, ret, RNODE_IF(node)->nd_body, unmatched, in_single_pattern, in_alt_pattern, base_index, use_deconstructed_cache));
+        CHECK(COMPILE(ret, "case in if", RNODE_IF(node)->nd_cond));
         if (in_single_pattern) {
             LABEL *match_succeeded;
             match_succeeded = NEW_LABEL(line);
@@ -6917,15 +7912,15 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
         LABEL *match_failed;
         match_failed = NEW_LABEL(line);
 
-        n = node->nd_head;
-        if (! (nd_type_p(n, NODE_LIST) && n->nd_alen == 2)) {
+        n = RNODE_HASH(node)->nd_head;
+        if (! (nd_type_p(n, NODE_LIST) && RNODE_LIST(n)->as.nd_alen == 2)) {
             COMPILE_ERROR(ERROR_ARGS "unexpected node");
             return COMPILE_NG;
         }
 
         ADD_INSN(ret, line_node, dup); // (1)
-        CHECK(iseq_compile_pattern_match(iseq, ret, n->nd_head, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (1) */, use_deconstructed_cache));
-        CHECK(iseq_compile_pattern_each(iseq, ret, n->nd_next->nd_head, matched, match_failed, in_single_pattern, in_alt_pattern, base_index, false));
+        CHECK(iseq_compile_pattern_match(iseq, ret, RNODE_LIST(n)->nd_head, match_failed, in_single_pattern, in_alt_pattern, base_index + 1 /* (1) */, use_deconstructed_cache));
+        CHECK(iseq_compile_pattern_each(iseq, ret, RNODE_LIST(RNODE_LIST(n)->nd_next)->nd_head, matched, match_failed, in_single_pattern, in_alt_pattern, base_index, false));
         ADD_INSN(ret, line_node, putnil);
 
         ADD_LABEL(ret, match_failed);
@@ -6939,13 +7934,13 @@ iseq_compile_pattern_each(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *c
         fin = NEW_LABEL(line);
 
         ADD_INSN(ret, line_node, dup); // (1)
-        CHECK(iseq_compile_pattern_each(iseq, ret, node->nd_1st, match_succeeded, fin, in_single_pattern, true, base_index + 1 /* (1) */, use_deconstructed_cache));
+        CHECK(iseq_compile_pattern_each(iseq, ret, RNODE_OR(node)->nd_1st, match_succeeded, fin, in_single_pattern, true, base_index + 1 /* (1) */, use_deconstructed_cache));
         ADD_LABEL(ret, match_succeeded);
         ADD_INSN(ret, line_node, pop);
         ADD_INSNL(ret, line_node, jump, matched);
         ADD_INSN(ret, line_node, putnil);
         ADD_LABEL(ret, fin);
-        CHECK(iseq_compile_pattern_each(iseq, ret, node->nd_2nd, matched, unmatched, in_single_pattern, true, base_index, use_deconstructed_cache));
+        CHECK(iseq_compile_pattern_each(iseq, ret, RNODE_OR(node)->nd_2nd, matched, unmatched, in_single_pattern, true, base_index, use_deconstructed_cache));
         break;
       }
       default:
@@ -6968,9 +7963,9 @@ iseq_compile_pattern_constant(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NOD
 {
     const NODE *line_node = node;
 
-    if (node->nd_pconst) {
+    if (RNODE_ARYPTN(node)->nd_pconst) {
         ADD_INSN(ret, line_node, dup); // (1)
-        CHECK(COMPILE(ret, "constant", node->nd_pconst)); // (2)
+        CHECK(COMPILE(ret, "constant", RNODE_ARYPTN(node)->nd_pconst)); // (2)
         if (in_single_pattern) {
             ADD_INSN1(ret, line_node, dupn, INT2FIX(2));
         }
@@ -7171,14 +8166,14 @@ compile_case3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
     INIT_ANCHOR(body_seq);
     INIT_ANCHOR(cond_seq);
 
-    branches = decl_branch_base(iseq, node, "case");
+    branches = decl_branch_base(iseq, PTR2NUM(node), nd_code_loc(node), "case");
 
-    node = node->nd_body;
+    node = RNODE_CASE3(node)->nd_body;
     EXPECT_NODE("NODE_CASE3", node, NODE_IN, COMPILE_NG);
     type = nd_type(node);
     line = nd_line(node);
     line_node = node;
-    single_pattern = !node->nd_next;
+    single_pattern = !RNODE_IN(node)->nd_next;
 
     endlabel = NEW_LABEL(line);
     elselabel = NEW_LABEL(line);
@@ -7192,7 +8187,7 @@ compile_case3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
     }
     ADD_INSN(head, line_node, putnil); /* allocate stack for cached #deconstruct value */
 
-    CHECK(COMPILE(head, "case base", orig_node->nd_head));
+    CHECK(COMPILE(head, "case base", RNODE_CASE3(orig_node)->nd_head));
 
     ADD_SEQ(ret, head);	/* case VAL */
 
@@ -7205,17 +8200,21 @@ compile_case3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
         l1 = NEW_LABEL(line);
         ADD_LABEL(body_seq, l1);
         ADD_INSN1(body_seq, line_node, adjuststack, INT2FIX(single_pattern ? 6 : 2));
+
+        const NODE *const coverage_node = RNODE_IN(node)->nd_body ? RNODE_IN(node)->nd_body : node;
         add_trace_branch_coverage(
             iseq,
             body_seq,
-            node->nd_body ? node->nd_body : node,
+            nd_code_loc(coverage_node),
+            nd_node_id(coverage_node),
             branch_id++,
             "in",
             branches);
-        CHECK(COMPILE_(body_seq, "in body", node->nd_body, popped));
+
+        CHECK(COMPILE_(body_seq, "in body", RNODE_IN(node)->nd_body, popped));
         ADD_INSNL(body_seq, line_node, jump, endlabel);
 
-        pattern = node->nd_head;
+        pattern = RNODE_IN(node)->nd_head;
         if (pattern) {
             int pat_line = nd_line(pattern);
             LABEL *next_pat = NEW_LABEL(pat_line);
@@ -7230,7 +8229,7 @@ compile_case3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
             return COMPILE_NG;
         }
 
-        node = node->nd_next;
+        node = RNODE_IN(node)->nd_next;
         if (!node) {
             break;
         }
@@ -7243,7 +8242,7 @@ compile_case3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
         ADD_LABEL(cond_seq, elselabel);
         ADD_INSN(cond_seq, line_node, pop);
         ADD_INSN(cond_seq, line_node, pop); /* discard cached #deconstruct value */
-        add_trace_branch_coverage(iseq, cond_seq, node, branch_id, "else", branches);
+        add_trace_branch_coverage(iseq, cond_seq, nd_code_loc(node), nd_node_id(node), branch_id, "else", branches);
         CHECK(COMPILE_(cond_seq, "else", node, popped));
         ADD_INSNL(cond_seq, line_node, jump, endlabel);
         ADD_INSN(cond_seq, line_node, putnil);
@@ -7254,7 +8253,7 @@ compile_case3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
     else {
         debugs("== else (implicit)\n");
         ADD_LABEL(cond_seq, elselabel);
-        add_trace_branch_coverage(iseq, cond_seq, orig_node, branch_id, "else", branches);
+        add_trace_branch_coverage(iseq, cond_seq, nd_code_loc(orig_node), nd_node_id(orig_node), branch_id, "else", branches);
         ADD_INSN1(cond_seq, orig_node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
 
         if (single_pattern) {
@@ -7272,6 +8271,7 @@ compile_case3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const orig_no
             fin = NEW_LABEL(line);
 
             kw_arg = rb_xmalloc_mul_add(2, sizeof(VALUE), sizeof(struct rb_callinfo_kwarg));
+            kw_arg->references = 0;
             kw_arg->keyword_len = 2;
             kw_arg->keywords[0] = ID2SYM(rb_intern("matchee"));
             kw_arg->keywords[1] = ID2SYM(rb_intern("key"));
@@ -7355,7 +8355,7 @@ compile_loop(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, in
     ISEQ_COMPILE_DATA(iseq)->loopval_popped = 0;
     push_ensure_entry(iseq, &enl, NULL, NULL);
 
-    if (node->nd_state == 1) {
+    if (RNODE_WHILE(node)->nd_state == 1) {
         ADD_INSNL(ret, line_node, jump, next_label);
     }
     else {
@@ -7370,31 +8370,35 @@ compile_loop(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, in
     if (tmp_label) ADD_LABEL(ret, tmp_label);
 
     ADD_LABEL(ret, redo_label);
-    branches = decl_branch_base(iseq, node, type == NODE_WHILE ? "while" : "until");
+    branches = decl_branch_base(iseq, PTR2NUM(node), nd_code_loc(node), type == NODE_WHILE ? "while" : "until");
+
+    const NODE *const coverage_node = RNODE_WHILE(node)->nd_body ? RNODE_WHILE(node)->nd_body : node;
     add_trace_branch_coverage(
         iseq,
         ret,
-        node->nd_body ? node->nd_body : node,
+        nd_code_loc(coverage_node),
+        nd_node_id(coverage_node),
         0,
         "body",
         branches);
-    CHECK(COMPILE_POPPED(ret, "while body", node->nd_body));
+
+    CHECK(COMPILE_POPPED(ret, "while body", RNODE_WHILE(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);
+        CHECK(compile_branch_condition(iseq, ret, RNODE_WHILE(node)->nd_cond,
+                                       redo_label, end_label));
     }
     else {
         /* until */
-        compile_branch_condition(iseq, ret, node->nd_cond,
-                                 end_label, redo_label);
+        CHECK(compile_branch_condition(iseq, ret, RNODE_WHILE(node)->nd_cond,
+                                       end_label, redo_label));
     }
 
     ADD_LABEL(ret, end_label);
     ADD_ADJUST_RESTORE(ret, adjust_label);
 
-    if (node->nd_state == Qundef) {
+    if (UNDEF_P(RNODE_WHILE(node)->nd_state)) {
         /* ADD_INSN(ret, line_node, putundef); */
         COMPILE_ERROR(ERROR_ARGS "unsupported: putundef");
         return COMPILE_NG;
@@ -7436,18 +8440,18 @@ compile_iter(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, in
 
     ADD_LABEL(ret, retry_label);
     if (nd_type_p(node, NODE_FOR)) {
-        CHECK(COMPILE(ret, "iter caller (for)", node->nd_iter));
+        CHECK(COMPILE(ret, "iter caller (for)", RNODE_FOR(node)->nd_iter));
 
         ISEQ_COMPILE_DATA(iseq)->current_block = child_iseq =
-            NEW_CHILD_ISEQ(node->nd_body, make_name_for_block(iseq),
+            NEW_CHILD_ISEQ(RNODE_FOR(node)->nd_body, make_name_for_block(iseq),
                            ISEQ_TYPE_BLOCK, line);
         ADD_SEND_WITH_BLOCK(ret, line_node, 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),
+            NEW_CHILD_ISEQ(RNODE_ITER(node)->nd_body, make_name_for_block(iseq),
                            ISEQ_TYPE_BLOCK, line);
-        CHECK(COMPILE(ret, "iter caller", node->nd_iter));
+        CHECK(COMPILE(ret, "iter caller", RNODE_ITER(node)->nd_iter));
     }
 
     {
@@ -7458,11 +8462,11 @@ compile_iter(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, in
         // Normally, "send" instruction is at the last.
         // However, qcall under branch coverage measurement adds some instructions after the "send".
         //
-        // Note that "invokesuper" appears instead of "send".
+        // Note that "invokesuper", "invokesuperforward" appears instead of "send".
         INSN *iobj;
         LINK_ELEMENT *last_elem = LAST_ELEMENT(ret);
         iobj = IS_INSN(last_elem) ? (INSN*) last_elem : (INSN*) get_prev_insn((INSN*) last_elem);
-        while (INSN_OF(iobj) != BIN(send) && INSN_OF(iobj) != BIN(invokesuper)) {
+        while (!IS_INSN_ID(iobj, send) && !IS_INSN_ID(iobj, invokesuper) && !IS_INSN_ID(iobj, sendforward) && !IS_INSN_ID(iobj, invokesuperforward)) {
             iobj = (INSN*) get_prev_insn(iobj);
         }
         ELEM_INSERT_NEXT(&iobj->link, (LINK_ELEMENT*) retry_end_l);
@@ -7491,7 +8495,7 @@ compile_for_masgn(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const nod
      * (args.length == 1 && Array.try_convert(args[0])) || args
      */
     const NODE *line_node = node;
-    const NODE *var = node->nd_var;
+    const NODE *var = RNODE_FOR_MASGN(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));
@@ -7526,7 +8530,7 @@ compile_break(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
         LABEL *splabel = NEW_LABEL(0);
         ADD_LABEL(ret, splabel);
         ADD_ADJUST(ret, line_node, ISEQ_COMPILE_DATA(iseq)->redo_label);
-        CHECK(COMPILE_(ret, "break val (while/until)", node->nd_stts,
+        CHECK(COMPILE_(ret, "break val (while/until)", RNODE_BREAK(node)->nd_stts,
                        ISEQ_COMPILE_DATA(iseq)->loopval_popped));
         add_ensure_iseq(ret, iseq, 0);
         ADD_INSNL(ret, line_node, jump, ISEQ_COMPILE_DATA(iseq)->end_label);
@@ -7561,7 +8565,7 @@ compile_break(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
             }
 
             /* escape from block */
-            CHECK(COMPILE(ret, "break val (block)", node->nd_stts));
+            CHECK(COMPILE(ret, "break val (block)", RNODE_BREAK(node)->nd_stts));
             ADD_INSN1(ret, line_node, throw, INT2FIX(throw_flag | TAG_BREAK));
             if (popped) {
                 ADD_INSN(ret, line_node, pop);
@@ -7584,7 +8588,7 @@ compile_next(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, in
         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));
+        CHECK(COMPILE(ret, "next val/valid syntax?", RNODE_NEXT(node)->nd_stts));
         add_ensure_iseq(ret, iseq, 0);
         ADD_ADJUST(ret, line_node, ISEQ_COMPILE_DATA(iseq)->redo_label);
         ADD_INSNL(ret, line_node, jump, ISEQ_COMPILE_DATA(iseq)->start_label);
@@ -7598,11 +8602,10 @@ compile_next(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, in
         debugs("next in block\n");
         ADD_LABEL(ret, splabel);
         ADD_ADJUST(ret, line_node, ISEQ_COMPILE_DATA(iseq)->start_label);
-        CHECK(COMPILE(ret, "next val", node->nd_stts));
+        CHECK(COMPILE(ret, "next val", RNODE_NEXT(node)->nd_stts));
         add_ensure_iseq(ret, iseq, 0);
         ADD_INSNL(ret, line_node, jump, ISEQ_COMPILE_DATA(iseq)->end_label);
         ADD_ADJUST_RESTORE(ret, splabel);
-        splabel->unremovable = FALSE;
 
         if (!popped) {
             ADD_INSN(ret, line_node, putnil);
@@ -7633,7 +8636,7 @@ compile_next(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, in
             ip = ISEQ_BODY(ip)->parent_iseq;
         }
         if (ip != 0) {
-            CHECK(COMPILE(ret, "next val", node->nd_stts));
+            CHECK(COMPILE(ret, "next val", RNODE_NEXT(node)->nd_stts));
             ADD_INSN1(ret, line_node, throw, INT2FIX(throw_flag | TAG_NEXT));
 
             if (popped) {
@@ -7745,7 +8748,7 @@ compile_rescue(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const 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,
+    const rb_iseq_t *rescue = NEW_CHILD_ISEQ(RNODE_RESCUE(node)->nd_resq,
                                              rb_str_concat(rb_str_new2("rescue in "),
                                                            ISEQ_BODY(iseq)->location.label),
                                              ISEQ_TYPE_RESCUE, line);
@@ -7757,14 +8760,14 @@ compile_rescue(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
     bool prev_in_rescue = ISEQ_COMPILE_DATA(iseq)->in_rescue;
     ISEQ_COMPILE_DATA(iseq)->in_rescue = true;
     {
-        CHECK(COMPILE(ret, "rescue head", node->nd_head));
+        CHECK(COMPILE(ret, "rescue head", RNODE_RESCUE(node)->nd_head));
     }
     ISEQ_COMPILE_DATA(iseq)->in_rescue = prev_in_rescue;
 
     ADD_LABEL(ret, lend);
-    if (node->nd_else) {
+    if (RNODE_RESCUE(node)->nd_else) {
         ADD_INSN(ret, line_node, pop);
-        CHECK(COMPILE(ret, "rescue else", node->nd_else));
+        CHECK(COMPILE(ret, "rescue else", RNODE_RESCUE(node)->nd_else));
     }
     ADD_INSN(ret, line_node, nop);
     ADD_LABEL(ret, lcont);
@@ -7792,16 +8795,16 @@ compile_resbody(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
         label_miss = NEW_LABEL(line);
         label_hit = NEW_LABEL(line);
 
-        narg = resq->nd_args;
+        narg = RNODE_RESBODY(resq)->nd_args;
         if (narg) {
             switch (nd_type(narg)) {
               case NODE_LIST:
                 while (narg) {
                     ADD_GETLOCAL(ret, line_node, LVAR_ERRINFO, 0);
-                    CHECK(COMPILE(ret, "rescue arg", narg->nd_head));
+                    CHECK(COMPILE(ret, "rescue arg", RNODE_LIST(narg)->nd_head));
                     ADD_INSN1(ret, line_node, checkmatch, INT2FIX(VM_CHECKMATCH_TYPE_RESCUE));
                     ADD_INSNL(ret, line_node, branchif, label_hit);
-                    narg = narg->nd_next;
+                    narg = RNODE_LIST(narg)->nd_next;
                 }
                 break;
               case NODE_SPLAT:
@@ -7824,13 +8827,26 @@ compile_resbody(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
         }
         ADD_INSNL(ret, line_node, jump, label_miss);
         ADD_LABEL(ret, label_hit);
-        CHECK(COMPILE(ret, "resbody body", resq->nd_body));
+        ADD_TRACE(ret, RUBY_EVENT_RESCUE);
+
+        if (RNODE_RESBODY(resq)->nd_exc_var) {
+            CHECK(COMPILE_POPPED(ret, "resbody exc_var", RNODE_RESBODY(resq)->nd_exc_var));
+        }
+
+        if (nd_type(RNODE_RESBODY(resq)->nd_body) == NODE_BEGIN && RNODE_BEGIN(RNODE_RESBODY(resq)->nd_body)->nd_body == NULL && !RNODE_RESBODY(resq)->nd_exc_var) {
+            // empty body
+            ADD_SYNTHETIC_INSN(ret, nd_line(RNODE_RESBODY(resq)->nd_body), -1, putnil);
+        }
+        else {
+            CHECK(COMPILE(ret, "resbody body", RNODE_RESBODY(resq)->nd_body));
+        }
+
         if (ISEQ_COMPILE_DATA(iseq)->option->tailcall_optimization) {
             ADD_INSN(ret, line_node, nop);
         }
         ADD_INSN(ret, line_node, leave);
         ADD_LABEL(ret, label_miss);
-        resq = resq->nd_head;
+        resq = RNODE_RESBODY(resq)->nd_next;
     }
     return COMPILE_OK;
 }
@@ -7838,10 +8854,10 @@ compile_resbody(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
 static int
 compile_ensure(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
-    const int line = nd_line(node);
+    const int line = nd_line(RNODE_ENSURE(node)->nd_ensr);
     const NODE *line_node = node;
     DECL_ANCHOR(ensr);
-    const rb_iseq_t *ensure = NEW_CHILD_ISEQ(node->nd_ensr,
+    const rb_iseq_t *ensure = NEW_CHILD_ISEQ(RNODE_ENSURE(node)->nd_ensr,
                                              rb_str_concat(rb_str_new2 ("ensure in "), ISEQ_BODY(iseq)->location.label),
                                              ISEQ_TYPE_ENSURE, line);
     LABEL *lstart = NEW_LABEL(line);
@@ -7854,17 +8870,17 @@ compile_ensure(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
     struct ensure_range *erange;
 
     INIT_ANCHOR(ensr);
-    CHECK(COMPILE_POPPED(ensr, "ensure ensr", node->nd_ensr));
+    CHECK(COMPILE_POPPED(ensr, "ensure ensr", RNODE_ENSURE(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);
+    push_ensure_entry(iseq, &enl, &er, RNODE_ENSURE(node)->nd_ensr);
 
     ADD_LABEL(ret, lstart);
-    CHECK(COMPILE_(ret, "ensure head", node->nd_head, (popped | last_leave)));
+    CHECK(COMPILE_(ret, "ensure head", RNODE_ENSURE(node)->nd_head, (popped | last_leave)));
     ADD_LABEL(ret, lend);
     ADD_SEQ(ret, ensr);
     if (!popped && last_leave) ADD_INSN(ret, line_node, putnil);
@@ -7893,7 +8909,7 @@ compile_return(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
         enum rb_iseq_type type = ISEQ_BODY(iseq)->type;
         const rb_iseq_t *is = iseq;
         enum rb_iseq_type t = type;
-        const NODE *retval = node->nd_stts;
+        const NODE *retval = RNODE_RETURN(node)->nd_stts;
         LABEL *splabel = 0;
 
         while (t == ISEQ_TYPE_RESCUE || t == ISEQ_TYPE_ENSURE) {
@@ -7943,6 +8959,27 @@ compile_return(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
     return COMPILE_OK;
 }
 
+static bool
+drop_unreachable_return(LINK_ANCHOR *ret)
+{
+    LINK_ELEMENT *i = ret->last, *last;
+    if (!i) return false;
+    if (IS_TRACE(i)) i = i->prev;
+    if (!IS_INSN(i) || !IS_INSN_ID(i, putnil)) return false;
+    last = i = i->prev;
+    if (IS_ADJUST(i)) i = i->prev;
+    if (!IS_INSN(i)) return false;
+    switch (INSN_OF(i)) {
+      case BIN(leave):
+      case BIN(jump):
+        break;
+      default:
+        return false;
+    }
+    (ret->last = last->prev)->next = NULL;
+    return true;
+}
+
 static int
 compile_evstr(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
@@ -7976,11 +9013,11 @@ qcall_branch_start(rb_iseq_t *iseq, LINK_ANCHOR *const recv, VALUE *branches, co
     LABEL *else_label = NEW_LABEL(nd_line(line_node));
     VALUE br = 0;
 
-    br = decl_branch_base(iseq, node, "&.");
+    br = decl_branch_base(iseq, PTR2NUM(node), nd_code_loc(node), "&.");
     *branches = br;
     ADD_INSN(recv, line_node, dup);
     ADD_INSNL(recv, line_node, branchnil, else_label);
-    add_trace_branch_coverage(iseq, recv, node, 0, "then", br);
+    add_trace_branch_coverage(iseq, recv, nd_code_loc(node), nd_node_id(node), 0, "then", br);
     return else_label;
 }
 
@@ -7992,7 +9029,7 @@ qcall_branch_end(rb_iseq_t *iseq, LINK_ANCHOR *const ret, LABEL *else_label, VAL
     end_label = NEW_LABEL(nd_line(line_node));
     ADD_INSNL(ret, line_node, jump, end_label);
     ADD_LABEL(ret, else_label);
-    add_trace_branch_coverage(iseq, ret, node, 1, "else", branches);
+    add_trace_branch_coverage(iseq, ret, nd_code_loc(node), nd_node_id(node), 1, "else", branches);
     ADD_LABEL(ret, end_label);
 }
 
@@ -8002,13 +9039,14 @@ compile_call_precheck_freeze(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE
     /* optimization shortcut
      *   "literal".freeze -> opt_str_freeze("literal")
      */
-    if (node->nd_recv && nd_type_p(node->nd_recv, NODE_STR) &&
-        (node->nd_mid == idFreeze || node->nd_mid == idUMinus) &&
-        node->nd_args == NULL &&
+    if (get_nd_recv(node) &&
+        (nd_type_p(get_nd_recv(node), NODE_STR) || nd_type_p(get_nd_recv(node), NODE_FILE)) &&
+        (get_node_call_nd_mid(node) == idFreeze || get_node_call_nd_mid(node) == idUMinus) &&
+        get_nd_args(node) == 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) {
+        VALUE str = get_string_value(get_nd_recv(node));
+        if (get_node_call_nd_mid(node) == idUMinus) {
             ADD_INSN2(ret, line_node, opt_str_uminus, str,
                       new_callinfo(iseq, idUMinus, 0, 0, NULL, FALSE));
         }
@@ -8022,25 +9060,6 @@ compile_call_precheck_freeze(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE
         }
         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_p(node->nd_args, NODE_LIST) && node->nd_args->nd_alen == 1 &&
-        nd_type_p(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_node, opt_aref_with, str,
-                  new_callinfo(iseq, idAREF, 1, 0, NULL, FALSE));
-        RB_OBJ_WRITTEN(iseq, Qundef, str);
-        if (popped) {
-            ADD_INSN(ret, line_node, pop);
-        }
-        return TRUE;
-    }
     return FALSE;
 }
 
@@ -8075,12 +9094,12 @@ iseq_builtin_function_name(const enum node_type type, const NODE *recv, ID mid)
         if (recv) {
             switch (nd_type(recv)) {
               case NODE_VCALL:
-                if (recv->nd_mid == rb_intern("__builtin")) {
+                if (RNODE_VCALL(recv)->nd_mid == rb_intern("__builtin")) {
                     return name;
                 }
                 break;
               case NODE_CONST:
-                if (recv->nd_vid == rb_intern("Primitive")) {
+                if (RNODE_CONST(recv)->nd_vid == rb_intern("Primitive")) {
                     return name;
                 }
                 break;
@@ -8161,16 +9180,79 @@ delegate_call_p(const rb_iseq_t *iseq, unsigned int argc, const LINK_ANCHOR *arg
     }
 }
 
+// Compile Primitive.attr! :leaf, ...
+static int
+compile_builtin_attr(rb_iseq_t *iseq, const NODE *node)
+{
+    VALUE symbol;
+    VALUE string;
+    if (!node) goto no_arg;
+    while (node) {
+        if (!nd_type_p(node, NODE_LIST)) goto bad_arg;
+        const NODE *next = RNODE_LIST(node)->nd_next;
+
+        node = RNODE_LIST(node)->nd_head;
+        if (!node) goto no_arg;
+        switch (nd_type(node)) {
+          case NODE_SYM:
+            symbol = rb_node_sym_string_val(node);
+            break;
+          default:
+            goto bad_arg;
+        }
+
+        if (!SYMBOL_P(symbol)) goto non_symbol_arg;
+
+        string = rb_sym2str(symbol);
+        if (strcmp(RSTRING_PTR(string), "leaf") == 0) {
+            ISEQ_BODY(iseq)->builtin_attrs |= BUILTIN_ATTR_LEAF;
+        }
+        else if (strcmp(RSTRING_PTR(string), "inline_block") == 0) {
+            ISEQ_BODY(iseq)->builtin_attrs |= BUILTIN_ATTR_INLINE_BLOCK;
+        }
+        else if (strcmp(RSTRING_PTR(string), "use_block") == 0) {
+            iseq_set_use_block(iseq);
+        }
+        else if (strcmp(RSTRING_PTR(string), "c_trace") == 0) {
+            // Let the iseq act like a C method in backtraces
+            ISEQ_BODY(iseq)->builtin_attrs |= BUILTIN_ATTR_C_TRACE;
+        }
+        else {
+            goto unknown_arg;
+        }
+        node = next;
+    }
+    return COMPILE_OK;
+  no_arg:
+    COMPILE_ERROR(ERROR_ARGS "attr!: no argument");
+    return COMPILE_NG;
+  non_symbol_arg:
+    COMPILE_ERROR(ERROR_ARGS "non symbol argument to attr!: %s", rb_builtin_class_name(symbol));
+    return COMPILE_NG;
+  unknown_arg:
+    COMPILE_ERROR(ERROR_ARGS "unknown argument to attr!: %s", RSTRING_PTR(string));
+    return COMPILE_NG;
+  bad_arg:
+    UNKNOWN_NODE("attr!", node, COMPILE_NG);
+}
+
 static int
 compile_builtin_arg(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *node, const NODE *line_node, int popped)
 {
+    VALUE name;
+
     if (!node) goto no_arg;
     if (!nd_type_p(node, NODE_LIST)) goto bad_arg;
-    if (node->nd_next) goto too_many_arg;
-    node = node->nd_head;
+    if (RNODE_LIST(node)->nd_next) goto too_many_arg;
+    node = RNODE_LIST(node)->nd_head;
     if (!node) goto no_arg;
-    if (!nd_type_p(node, NODE_LIT)) goto bad_arg;
-    VALUE name = node->nd_lit;
+    switch (nd_type(node)) {
+      case NODE_SYM:
+        name = rb_node_sym_string_val(node);
+        break;
+      default:
+        goto bad_arg;
+    }
     if (!SYMBOL_P(name)) goto non_symbol_arg;
     if (!popped) {
         compile_lvar(iseq, ret, line_node, SYM2ID(name));
@@ -8194,8 +9276,8 @@ static NODE *
 mandatory_node(const rb_iseq_t *iseq, const NODE *cond_node)
 {
     const NODE *node = ISEQ_COMPILE_DATA(iseq)->root_node;
-    if (nd_type(node) == NODE_IF && node->nd_cond == cond_node) {
-        return node->nd_body;
+    if (nd_type(node) == NODE_IF && RNODE_IF(node)->nd_cond == cond_node) {
+        return RNODE_IF(node)->nd_body;
     }
     else {
         rb_bug("mandatory_node: can't find mandatory node");
@@ -8209,8 +9291,9 @@ compile_builtin_mandatory_only_method(rb_iseq_t *iseq, const NODE *node, const N
     struct rb_args_info args = {
         .pre_args_num = ISEQ_BODY(iseq)->param.lead_num,
     };
-    NODE args_node;
-    rb_node_init(&args_node, NODE_ARGS, 0, 0, (VALUE)&args);
+    rb_node_args_t args_node;
+    rb_node_init(RNODE(&args_node), NODE_ARGS);
+    args_node.nd_ainfo = args;
 
     // local table without non-mandatory parameters
     const int skip_local_size = ISEQ_BODY(iseq)->param.size - ISEQ_BODY(iseq)->param.lead_num;
@@ -8231,24 +9314,23 @@ compile_builtin_mandatory_only_method(rb_iseq_t *iseq, const NODE *node, const N
         tbl->ids[i] = ISEQ_BODY(iseq)->local_table[i + skip_local_size];
     }
 
-    NODE scope_node;
-    rb_node_init(&scope_node, NODE_SCOPE, (VALUE)tbl, (VALUE)mandatory_node(iseq, node), (VALUE)&args_node);
-
-    rb_ast_body_t ast = {
-        .root = &scope_node,
-        .compile_option = 0,
-        .script_lines = ISEQ_BODY(iseq)->variable.script_lines,
-    };
+    rb_node_scope_t scope_node;
+    rb_node_init(RNODE(&scope_node), NODE_SCOPE);
+    scope_node.nd_tbl = tbl;
+    scope_node.nd_body = mandatory_node(iseq, node);
+    scope_node.nd_parent = NULL;
+    scope_node.nd_args = &args_node;
 
-    int prev_inline_index = GET_VM()->builtin_inline_index;
+    VALUE ast_value = rb_ruby_ast_new(RNODE(&scope_node));
 
-    ISEQ_BODY(iseq)->mandatory_only_iseq =
-      rb_iseq_new_with_opt(&ast, rb_iseq_base_label(iseq),
+    const rb_iseq_t *mandatory_only_iseq =
+      rb_iseq_new_with_opt(ast_value, rb_iseq_base_label(iseq),
                            rb_iseq_path(iseq), rb_iseq_realpath(iseq),
                            nd_line(line_node), NULL, 0,
-                           ISEQ_TYPE_METHOD, ISEQ_COMPILE_DATA(iseq)->option);
+                           ISEQ_TYPE_METHOD, ISEQ_COMPILE_DATA(iseq)->option,
+                           ISEQ_BODY(iseq)->variable.script_lines);
+    RB_OBJ_WRITE(iseq, &ISEQ_BODY(iseq)->mandatory_only_iseq, (VALUE)mandatory_only_iseq);
 
-    GET_VM()->builtin_inline_index = prev_inline_index;
     ALLOCV_END(idtmp);
     return COMPILE_OK;
 }
@@ -8257,15 +9339,15 @@ static int
 compile_builtin_function_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, const NODE *line_node, int popped,
                               const rb_iseq_t *parent_block, LINK_ANCHOR *args, const char *builtin_func)
 {
-    NODE *args_node = node->nd_args;
+    NODE *args_node = get_nd_args(node);
 
     if (parent_block != NULL) {
-        COMPILE_ERROR(iseq, nd_line(line_node), "should not call builtins here.");
+        COMPILE_ERROR(ERROR_ARGS_AT(line_node) "should not call builtins here.");
         return COMPILE_NG;
     }
     else {
 # define BUILTIN_INLINE_PREFIX "_bi"
-        char inline_func[DECIMAL_SIZE_OF_BITS(sizeof(int) * CHAR_BIT) + sizeof(BUILTIN_INLINE_PREFIX)];
+        char inline_func[sizeof(BUILTIN_INLINE_PREFIX) + DECIMAL_SIZE_OF(int)];
         bool cconst = false;
       retry:;
         const struct rb_builtin_function *bf = iseq_builtin_function_lookup(iseq, builtin_func);
@@ -8280,13 +9362,10 @@ compile_builtin_function_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NOD
             }
             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(iseq)->builtin_inline_p = true;
-                return COMPILE_OK;
+                return compile_builtin_attr(iseq, args_node);
             }
             else if (strcmp("arg!", builtin_func) == 0) {
                 return compile_builtin_arg(iseq, ret, args_node, line_node, popped);
@@ -8310,10 +9389,7 @@ compile_builtin_function_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NOD
                 return COMPILE_NG;
             }
 
-            if (GET_VM()->builtin_inline_index == INT_MAX) {
-                rb_bug("builtin inline function index overflow:%s", builtin_func);
-            }
-            int inline_index = GET_VM()->builtin_inline_index++;
+            int inline_index = nd_line(node);
             snprintf(inline_func, sizeof(inline_func), BUILTIN_INLINE_PREFIX "%d", inline_index);
             builtin_func = inline_func;
             args_node = NULL;
@@ -8322,7 +9398,7 @@ compile_builtin_function_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NOD
 
         if (cconst) {
             typedef VALUE(*builtin_func0)(void *, VALUE);
-            VALUE const_val = (*(builtin_func0)bf->func_ptr)(NULL, Qnil);
+            VALUE const_val = (*(builtin_func0)(uintptr_t)bf->func_ptr)(NULL, Qnil);
             ADD_INSN1(ret, line_node, putobject, const_val);
             return COMPILE_OK;
         }
@@ -8362,7 +9438,7 @@ compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, co
      */
     DECL_ANCHOR(recv);
     DECL_ANCHOR(args);
-    ID mid = node->nd_mid;
+    ID mid = get_node_call_nd_mid(node);
     VALUE argc;
     unsigned int flag = 0;
     struct rb_callinfo_kwarg *keywords = NULL;
@@ -8374,6 +9450,7 @@ compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, co
 
     INIT_ANCHOR(recv);
     INIT_ANCHOR(args);
+
 #if OPT_SUPPORT_JOKE
     if (nd_type_p(node, NODE_VCALL)) {
         ID id_bitblt;
@@ -8410,20 +9487,7 @@ compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, co
                 labels_table = st_init_numtable();
                 ISEQ_COMPILE_DATA(iseq)->labels_table = labels_table;
             }
-            if (nd_type_p(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(nd_line(line_node));
-                    label->position = nd_line(line_node);
-                    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;
             }
@@ -8441,7 +9505,7 @@ compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, co
 
     const char *builtin_func;
     if (UNLIKELY(iseq_has_builtin_function_table(iseq)) &&
-        (builtin_func = iseq_builtin_function_name(type, node->nd_recv, mid)) != NULL) {
+        (builtin_func = iseq_builtin_function_name(type, get_nd_recv(node), mid)) != NULL) {
         return compile_builtin_function_call(iseq, ret, node, line_node, popped, parent_block, args, builtin_func);
     }
 
@@ -8451,16 +9515,16 @@ compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, co
             int idx, level;
 
             if (mid == idCall &&
-                nd_type_p(node->nd_recv, NODE_LVAR) &&
-                iseq_block_param_id_p(iseq, node->nd_recv->nd_vid, &idx, &level)) {
-                ADD_INSN2(recv, node->nd_recv, getblockparamproxy, INT2FIX(idx + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
+                nd_type_p(get_nd_recv(node), NODE_LVAR) &&
+                iseq_block_param_id_p(iseq, RNODE_LVAR(get_nd_recv(node))->nd_vid, &idx, &level)) {
+                ADD_INSN2(recv, get_nd_recv(node), getblockparamproxy, INT2FIX(idx + VM_ENV_DATA_SIZE - 1), INT2FIX(level));
             }
             else if (private_recv_p(node)) {
                 ADD_INSN(recv, node, putself);
                 flag |= VM_CALL_FCALL;
             }
             else {
-                CHECK(COMPILE(recv, "recv", node->nd_recv));
+                CHECK(COMPILE(recv, "recv", get_nd_recv(node)));
             }
 
             if (type == NODE_QCALL) {
@@ -8474,7 +9538,7 @@ compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, co
 
     /* args */
     if (type != NODE_VCALL) {
-        argc = setup_args(iseq, args, node->nd_args, &flag, &keywords);
+        argc = setup_args(iseq, args, get_nd_args(node), &flag, &keywords);
         CHECK(!NIL_P(argc));
     }
     else {
@@ -8482,6 +9546,17 @@ compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, co
     }
 
     ADD_SEQ(ret, recv);
+
+    bool inline_new = ISEQ_COMPILE_DATA(iseq)->option->specialized_instruction &&
+        mid == rb_intern("new") &&
+        parent_block == NULL &&
+        !(flag & VM_CALL_ARGS_BLOCKARG);
+
+    if (inline_new) {
+        ADD_INSN(ret, node, putnil);
+        ADD_INSN(ret, node, swap);
+    }
+
     ADD_SEQ(ret, args);
 
     debugp_param("call args argc", argc);
@@ -8495,7 +9570,40 @@ compile_call(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, co
         flag |= VM_CALL_FCALL;
     }
 
-    ADD_SEND_R(ret, line_node, mid, argc, parent_block, INT2FIX(flag), keywords);
+    if ((flag & VM_CALL_ARGS_BLOCKARG) && (flag & VM_CALL_KW_SPLAT) && !(flag & VM_CALL_KW_SPLAT_MUT)) {
+        ADD_INSN(ret, line_node, splatkw);
+    }
+
+    LABEL *not_basic_new = NEW_LABEL(nd_line(node));
+    LABEL *not_basic_new_finish = NEW_LABEL(nd_line(node));
+
+    if (inline_new) {
+        // Jump unless the receiver uses the "basic" implementation of "new"
+        VALUE ci;
+        if (flag & VM_CALL_FORWARDING) {
+            ci = (VALUE)new_callinfo(iseq, mid, NUM2INT(argc) + 1, flag, keywords, 0);
+        }
+        else {
+            ci = (VALUE)new_callinfo(iseq, mid, NUM2INT(argc), flag, keywords, 0);
+        }
+        ADD_INSN2(ret, node, opt_new, ci, not_basic_new);
+        LABEL_REF(not_basic_new);
+
+        // optimized path
+        ADD_SEND_R(ret, line_node, rb_intern("initialize"), argc, parent_block, INT2FIX(flag | VM_CALL_FCALL), keywords);
+        ADD_INSNL(ret, line_node, jump, not_basic_new_finish);
+
+        ADD_LABEL(ret, not_basic_new);
+        // Fall back to normal send
+        ADD_SEND_R(ret, line_node, mid, argc, parent_block, INT2FIX(flag), keywords);
+        ADD_INSN(ret, line_node, swap);
+
+        ADD_LABEL(ret, not_basic_new_finish);
+        ADD_INSN(ret, line_node, pop);
+    }
+    else {
+        ADD_SEND_R(ret, line_node, mid, argc, parent_block, INT2FIX(flag), keywords);
+    }
 
     qcall_branch_end(iseq, ret, else_label, branches, node, line_node);
     if (popped) {
@@ -8511,8 +9619,7 @@ compile_op_asgn1(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
     VALUE argc;
     unsigned int flag = 0;
     int asgnflag = 0;
-    ID id = node->nd_mid;
-    int boff = 0;
+    ID id = RNODE_OP_ASGN1(node)->nd_mid;
 
     /*
      * a[x] (op)= y
@@ -8540,22 +9647,20 @@ compile_op_asgn1(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
     if (!popped) {
         ADD_INSN(ret, node, putnil);
     }
-    asgnflag = COMPILE_RECV(ret, "NODE_OP_ASGN1 recv", node);
+    asgnflag = COMPILE_RECV(ret, "NODE_OP_ASGN1 recv", node, RNODE_OP_ASGN1(node)->nd_recv);
     CHECK(asgnflag != -1);
-    switch (nd_type(node->nd_args->nd_head)) {
+    switch (nd_type(RNODE_OP_ASGN1(node)->nd_index)) {
       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);
+        argc = setup_args(iseq, ret, RNODE_OP_ASGN1(node)->nd_index, &flag, NULL);
         CHECK(!NIL_P(argc));
     }
-    ADD_INSN1(ret, node, dupn, FIXNUM_INC(argc, 1 + boff));
+    int dup_argn = FIX2INT(argc) + 1;
+    ADD_INSN1(ret, node, dupn, INT2FIX(dup_argn));
     flag |= asgnflag;
-    ADD_SEND_WITH_FLAG(ret, node, idAREF, argc, INT2FIX(flag));
+    ADD_SEND_R(ret, node, idAREF, argc, NULL, INT2FIX(flag & ~VM_CALL_ARGS_SPLAT_MUT), NULL);
 
     if (id == idOROP || id == idANDOP) {
         /* a[x] ||= y  or  a[x] &&= y
@@ -8578,64 +9683,63 @@ compile_op_asgn1(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
         }
         ADD_INSN(ret, node, pop);
 
-        CHECK(COMPILE(ret, "NODE_OP_ASGN1 args->body: ", node->nd_args->nd_body));
+        CHECK(COMPILE(ret, "NODE_OP_ASGN1 nd_rvalue: ", RNODE_OP_ASGN1(node)->nd_rvalue));
         if (!popped) {
-            ADD_INSN1(ret, node, setn, FIXNUM_INC(argc, 2+boff));
+            ADD_INSN1(ret, node, setn, INT2FIX(dup_argn+1));
         }
         if (flag & VM_CALL_ARGS_SPLAT) {
-            ADD_INSN1(ret, node, newarray, INT2FIX(1));
-            if (boff > 0) {
-                ADD_INSN1(ret, node, dupn, INT2FIX(3));
+            if (!(flag & VM_CALL_ARGS_SPLAT_MUT)) {
                 ADD_INSN(ret, node, swap);
-                ADD_INSN(ret, node, pop);
-            }
-            ADD_INSN(ret, node, concatarray);
-            if (boff > 0) {
-                ADD_INSN1(ret, node, setn, INT2FIX(3));
-                ADD_INSN(ret, node, pop);
-                ADD_INSN(ret, node, pop);
+                ADD_INSN1(ret, node, splatarray, Qtrue);
+                ADD_INSN(ret, node, swap);
+                flag |= VM_CALL_ARGS_SPLAT_MUT;
             }
-            ADD_SEND_WITH_FLAG(ret, node, idASET, argc, INT2FIX(flag));
+            ADD_INSN1(ret, node, pushtoarray, INT2FIX(1));
+            ADD_SEND_R(ret, node, idASET, argc, NULL, INT2FIX(flag), NULL);
         }
         else {
-            if (boff > 0)
-                ADD_INSN(ret, node, swap);
-            ADD_SEND_WITH_FLAG(ret, node, idASET, FIXNUM_INC(argc, 1), INT2FIX(flag));
+            ADD_SEND_R(ret, node, idASET, FIXNUM_INC(argc, 1), NULL, INT2FIX(flag), NULL);
         }
         ADD_INSN(ret, node, pop);
         ADD_INSNL(ret, node, jump, lfin);
         ADD_LABEL(ret, label);
         if (!popped) {
-            ADD_INSN1(ret, node, setn, FIXNUM_INC(argc, 2+boff));
+            ADD_INSN1(ret, node, setn, INT2FIX(dup_argn+1));
         }
-        ADD_INSN1(ret, node, adjuststack, FIXNUM_INC(argc, 2+boff));
+        ADD_INSN1(ret, node, adjuststack, INT2FIX(dup_argn+1));
         ADD_LABEL(ret, lfin);
     }
     else {
-        CHECK(COMPILE(ret, "NODE_OP_ASGN1 args->body: ", node->nd_args->nd_body));
+        CHECK(COMPILE(ret, "NODE_OP_ASGN1 nd_rvalue: ", RNODE_OP_ASGN1(node)->nd_rvalue));
         ADD_SEND(ret, node, id, INT2FIX(1));
         if (!popped) {
-            ADD_INSN1(ret, node, setn, FIXNUM_INC(argc, 2+boff));
+            ADD_INSN1(ret, node, setn, INT2FIX(dup_argn+1));
         }
         if (flag & VM_CALL_ARGS_SPLAT) {
-            ADD_INSN1(ret, node, newarray, INT2FIX(1));
-            if (boff > 0) {
-                ADD_INSN1(ret, node, dupn, INT2FIX(3));
+            if (flag & VM_CALL_KW_SPLAT) {
+                ADD_INSN1(ret, node, topn, INT2FIX(2));
+                if (!(flag & VM_CALL_ARGS_SPLAT_MUT)) {
+                    ADD_INSN1(ret, node, splatarray, Qtrue);
+                    flag |= VM_CALL_ARGS_SPLAT_MUT;
+                }
                 ADD_INSN(ret, node, swap);
+                ADD_INSN1(ret, node, pushtoarray, INT2FIX(1));
+                ADD_INSN1(ret, node, setn, INT2FIX(2));
                 ADD_INSN(ret, node, pop);
             }
-            ADD_INSN(ret, node, concatarray);
-            if (boff > 0) {
-                ADD_INSN1(ret, node, setn, INT2FIX(3));
-                ADD_INSN(ret, node, pop);
-                ADD_INSN(ret, node, pop);
+            else {
+                if (!(flag & VM_CALL_ARGS_SPLAT_MUT)) {
+                    ADD_INSN(ret, node, swap);
+                    ADD_INSN1(ret, node, splatarray, Qtrue);
+                    ADD_INSN(ret, node, swap);
+                    flag |= VM_CALL_ARGS_SPLAT_MUT;
+                }
+                ADD_INSN1(ret, node, pushtoarray, INT2FIX(1));
             }
-            ADD_SEND_WITH_FLAG(ret, node, idASET, argc, INT2FIX(flag));
+            ADD_SEND_R(ret, node, idASET, argc, NULL, INT2FIX(flag), NULL);
         }
         else {
-            if (boff > 0)
-                ADD_INSN(ret, node, swap);
-            ADD_SEND_WITH_FLAG(ret, node, idASET, FIXNUM_INC(argc, 1), INT2FIX(flag));
+            ADD_SEND_R(ret, node, idASET, FIXNUM_INC(argc, 1), NULL, INT2FIX(flag), NULL);
         }
         ADD_INSN(ret, node, pop);
     }
@@ -8646,8 +9750,8 @@ static int
 compile_op_asgn2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
     const int line = nd_line(node);
-    ID atype = node->nd_next->nd_mid;
-    ID vid = node->nd_next->nd_vid, aid = rb_id_attrset(vid);
+    ID atype = RNODE_OP_ASGN2(node)->nd_mid;
+    ID vid = RNODE_OP_ASGN2(node)->nd_vid, aid = rb_id_attrset(vid);
     int asgnflag;
     LABEL *lfin = NEW_LABEL(line);
     LABEL *lcfin = NEW_LABEL(line);
@@ -8705,9 +9809,9 @@ compile_op_asgn2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
 
     */
 
-    asgnflag = COMPILE_RECV(ret, "NODE_OP_ASGN2#recv", node);
+    asgnflag = COMPILE_RECV(ret, "NODE_OP_ASGN2#recv", node, RNODE_OP_ASGN2(node)->nd_recv);
     CHECK(asgnflag != -1);
-    if (node->nd_next->nd_aid) {
+    if (RNODE_OP_ASGN2(node)->nd_aid) {
         lskip = NEW_LABEL(line);
         ADD_INSN(ret, node, dup);
         ADD_INSNL(ret, node, branchnil, lskip);
@@ -8728,7 +9832,7 @@ compile_op_asgn2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
         if (!popped) {
             ADD_INSN(ret, node, pop);
         }
-        CHECK(COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value));
+        CHECK(COMPILE(ret, "NODE_OP_ASGN2 val", RNODE_OP_ASGN2(node)->nd_value));
         if (!popped) {
             ADD_INSN(ret, node, swap);
             ADD_INSN1(ret, node, topn, INT2FIX(1));
@@ -8744,7 +9848,7 @@ compile_op_asgn2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
         ADD_LABEL(ret, lfin);
     }
     else {
-        CHECK(COMPILE(ret, "NODE_OP_ASGN2 val", node->nd_value));
+        CHECK(COMPILE(ret, "NODE_OP_ASGN2 val", RNODE_OP_ASGN2(node)->nd_value));
         ADD_SEND(ret, node, atype, INT2FIX(1));
         if (!popped) {
             ADD_INSN(ret, node, swap);
@@ -8762,6 +9866,8 @@ compile_op_asgn2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
     return COMPILE_OK;
 }
 
+static int compile_shareable_constant_value(rb_iseq_t *iseq, LINK_ANCHOR *ret, enum rb_parser_shareability shareable, const NODE *lhs, const NODE *value);
+
 static int
 compile_op_cdecl(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
@@ -8770,21 +9876,21 @@ compile_op_cdecl(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
     LABEL *lassign = 0;
     ID mid;
 
-    switch (nd_type(node->nd_head)) {
+    switch (nd_type(RNODE_OP_CDECL(node)->nd_head)) {
       case NODE_COLON3:
         ADD_INSN1(ret, node, putobject, rb_cObject);
         break;
       case NODE_COLON2:
-        CHECK(COMPILE(ret, "NODE_OP_CDECL/colon2#nd_head", node->nd_head->nd_head));
+        CHECK(COMPILE(ret, "NODE_OP_CDECL/colon2#nd_head", RNODE_COLON2(RNODE_OP_CDECL(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)));
+                      ruby_node_name(nd_type(RNODE_OP_CDECL(node)->nd_head)));
         return COMPILE_NG;
     }
-    mid = node->nd_head->nd_mid;
+    mid = get_node_colon_nd_mid(RNODE_OP_CDECL(node)->nd_head);
     /* cref */
-    if (node->nd_aid == idOROP) {
+    if (RNODE_OP_CDECL(node)->nd_aid == idOROP) {
         lassign = NEW_LABEL(line);
         ADD_INSN(ret, node, dup); /* cref cref */
         ADD_INSN3(ret, node, defined, INT2FIX(DEFINED_CONST_FROM),
@@ -8795,17 +9901,17 @@ compile_op_cdecl(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
     ADD_INSN1(ret, node, putobject, Qtrue);
     ADD_INSN1(ret, node, getconstant, ID2SYM(mid)); /* cref obj */
 
-    if (node->nd_aid == idOROP || node->nd_aid == idANDOP) {
+    if (RNODE_OP_CDECL(node)->nd_aid == idOROP || RNODE_OP_CDECL(node)->nd_aid == idANDOP) {
         lfin = NEW_LABEL(line);
         if (!popped) ADD_INSN(ret, node, dup); /* cref [obj] obj */
-        if (node->nd_aid == idOROP)
+        if (RNODE_OP_CDECL(node)->nd_aid == idOROP)
             ADD_INSNL(ret, node, branchif, lfin);
         else /* idANDOP */
             ADD_INSNL(ret, node, branchunless, lfin);
         /* cref [obj] */
         if (!popped) ADD_INSN(ret, node, pop); /* cref */
         if (lassign) ADD_LABEL(ret, lassign);
-        CHECK(COMPILE(ret, "NODE_OP_CDECL#nd_value", node->nd_value));
+        CHECK(compile_shareable_constant_value(iseq, ret, RNODE_OP_CDECL(node)->shareability, RNODE_OP_CDECL(node)->nd_head, RNODE_OP_CDECL(node)->nd_value));
         /* cref value */
         if (popped)
             ADD_INSN1(ret, node, topn, INT2FIX(1)); /* cref value cref */
@@ -8819,9 +9925,9 @@ compile_op_cdecl(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
         ADD_INSN(ret, node, pop); /* [value] */
     }
     else {
-        CHECK(COMPILE(ret, "NODE_OP_CDECL#nd_value", node->nd_value));
+        CHECK(compile_shareable_constant_value(iseq, ret, RNODE_OP_CDECL(node)->shareability, RNODE_OP_CDECL(node)->nd_head, RNODE_OP_CDECL(node)->nd_value));
         /* cref obj value */
-        ADD_CALL(ret, node, node->nd_aid, INT2FIX(1));
+        ADD_CALL(ret, node, RNODE_OP_CDECL(node)->nd_aid, INT2FIX(1));
         /* cref value */
         ADD_INSN(ret, node, swap); /* value cref */
         if (!popped) {
@@ -8840,11 +9946,11 @@ compile_op_log(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
     LABEL *lfin = NEW_LABEL(line);
     LABEL *lassign;
 
-    if (type == NODE_OP_ASGN_OR && !nd_type_p(node->nd_head, NODE_IVAR)) {
+    if (type == NODE_OP_ASGN_OR && !nd_type_p(RNODE_OP_ASGN_OR(node)->nd_head, NODE_IVAR)) {
         LABEL *lfinish[2];
         lfinish[0] = lfin;
         lfinish[1] = 0;
-        defined_expr(iseq, ret, node->nd_head, lfinish, Qfalse);
+        defined_expr(iseq, ret, RNODE_OP_ASGN_OR(node)->nd_head, lfinish, Qfalse, false);
         lassign = lfinish[1];
         if (!lassign) {
             lassign = NEW_LABEL(line);
@@ -8855,7 +9961,7 @@ compile_op_log(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
         lassign = NEW_LABEL(line);
     }
 
-    CHECK(COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_head", node->nd_head));
+    CHECK(COMPILE(ret, "NODE_OP_ASGN_AND/OR#nd_head", RNODE_OP_ASGN_OR(node)->nd_head));
 
     if (!popped) {
         ADD_INSN(ret, node, dup);
@@ -8873,7 +9979,7 @@ compile_op_log(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
     }
 
     ADD_LABEL(ret, lassign);
-    CHECK(COMPILE_(ret, "NODE_OP_ASGN_AND/OR#nd_value", node->nd_value, popped));
+    CHECK(COMPILE_(ret, "NODE_OP_ASGN_AND/OR#nd_value", RNODE_OP_ASGN_OR(node)->nd_value, popped));
     ADD_LABEL(ret, lfin);
     return COMPILE_OK;
 }
@@ -8887,13 +9993,22 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
     unsigned int flag = 0;
     struct rb_callinfo_kwarg *keywords = NULL;
     const rb_iseq_t *parent_block = ISEQ_COMPILE_DATA(iseq)->current_block;
+    int use_block = 1;
 
     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);
+        VALUE vargc = setup_args(iseq, args, RNODE_SUPER(node)->nd_args, &flag, &keywords);
         CHECK(!NIL_P(vargc));
         argc = FIX2INT(vargc);
+        if ((flag & VM_CALL_ARGS_BLOCKARG) && (flag & VM_CALL_KW_SPLAT) && !(flag & VM_CALL_KW_SPLAT_MUT)) {
+            ADD_INSN(args, node, splatkw);
+        }
+
+        if (flag & VM_CALL_ARGS_BLOCKARG) {
+            use_block = 0;
+        }
     }
     else {
         /* NODE_ZSUPER */
@@ -8911,6 +10026,13 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
             ADD_GETLOCAL(args, node, idx, lvar_level);
         }
 
+        /* forward ... */
+        if (local_body->param.flags.forwardable) {
+            flag |= VM_CALL_FORWARDING;
+            int idx = local_body->local_table_size - get_local_var_idx(liseq, idDot3);
+            ADD_GETLOCAL(args, node, idx, lvar_level);
+        }
+
         if (local_body->param.flags.has_opt) {
             /* optional arguments */
             int j;
@@ -8925,7 +10047,7 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
             /* rest argument */
             int idx = local_body->local_table_size - local_body->param.rest_start;
             ADD_GETLOCAL(args, node, idx, lvar_level);
-            ADD_INSN1(args, node, splatarray, Qfalse);
+            ADD_INSN1(args, node, splatarray, RBOOL(local_body->param.flags.has_post));
 
             argc = local_body->param.rest_start + 1;
             flag |= VM_CALL_ARGS_SPLAT;
@@ -8941,8 +10063,8 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
                     int idx = local_body->local_table_size - (post_start + j);
                     ADD_GETLOCAL(args, node, idx, lvar_level);
                 }
-                ADD_INSN1(args, node, newarray, INT2FIX(j));
-                ADD_INSN (args, node, concatarray);
+                ADD_INSN1(args, node, pushtoarray, INT2FIX(j));
+                flag |= VM_CALL_ARGS_SPLAT_MUT;
                 /* argc is settled at above */
             }
             else {
@@ -8964,14 +10086,11 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
             if (local_body->param.flags.has_kwrest) {
                 int idx = local_body->local_table_size - local_kwd->rest_start;
                 ADD_GETLOCAL(args, node, idx, lvar_level);
-                if (local_kwd->num > 0) {
-                    ADD_SEND (args, node, rb_intern("dup"), INT2FIX(0));
-                    flag |= VM_CALL_KW_SPLAT_MUT;
-                }
+                RUBY_ASSERT(local_kwd->num > 0);
+                ADD_SEND (args, node, rb_intern("dup"), INT2FIX(0));
             }
             else {
                 ADD_INSN1(args, node, newhash, INT2FIX(0));
-                flag |= VM_CALL_KW_SPLAT_MUT;
             }
             for (i = 0; i < local_kwd->num; ++i) {
                 ID id = local_kwd->table[i];
@@ -8980,35 +10099,33 @@ compile_super(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
                 ADD_GETLOCAL(args, node, idx, lvar_level);
             }
             ADD_SEND(args, node, id_core_hash_merge_ptr, INT2FIX(i * 2 + 1));
-            if (local_body->param.flags.has_rest) {
-                ADD_INSN1(args, node, newarray, INT2FIX(1));
-                ADD_INSN (args, node, concatarray);
-                --argc;
-            }
-            flag |= VM_CALL_KW_SPLAT;
+            flag |= VM_CALL_KW_SPLAT| VM_CALL_KW_SPLAT_MUT;
         }
         else if (local_body->param.flags.has_kwrest) {
             int idx = local_body->local_table_size - local_kwd->rest_start;
             ADD_GETLOCAL(args, node, idx, lvar_level);
-
-            if (local_body->param.flags.has_rest) {
-                ADD_INSN1(args, node, newarray, INT2FIX(1));
-                ADD_INSN (args, node, concatarray);
-            }
-            else {
-                argc++;
-            }
+            argc++;
             flag |= VM_CALL_KW_SPLAT;
         }
     }
 
+    if (use_block && parent_block == NULL) {
+        iseq_set_use_block(ISEQ_BODY(iseq)->local_iseq);
+    }
+
     flag |= VM_CALL_SUPER | VM_CALL_FCALL;
     if (type == NODE_ZSUPER) flag |= VM_CALL_ZSUPER;
     ADD_INSN(ret, node, putself);
     ADD_SEQ(ret, args);
-    ADD_INSN2(ret, node, invokesuper,
-              new_callinfo(iseq, 0, argc, flag, keywords, parent_block != NULL),
-              parent_block);
+
+    const struct rb_callinfo * ci = new_callinfo(iseq, 0, argc, flag, keywords, parent_block != NULL);
+
+    if (vm_ci_flag(ci) & VM_CALL_FORWARDING) {
+        ADD_INSN2(ret, node, invokesuperforward, ci, parent_block);
+    }
+    else {
+        ADD_INSN2(ret, node, invokesuper, ci, parent_block);
+    }
 
     if (popped) {
         ADD_INSN(ret, node, pop);
@@ -9035,8 +10152,8 @@ compile_yield(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
       default: /* valid */;
     }
 
-    if (node->nd_head) {
-        argc = setup_args(iseq, args, node->nd_head, &flag, &keywords);
+    if (RNODE_YIELD(node)->nd_head) {
+        argc = setup_args(iseq, args, RNODE_YIELD(node)->nd_head, &flag, &keywords);
         CHECK(!NIL_P(argc));
     }
     else {
@@ -9045,6 +10162,7 @@ compile_yield(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
 
     ADD_SEQ(ret, args);
     ADD_INSN1(ret, node, invokeblock, new_callinfo(iseq, 0, FIX2INT(argc), flag, keywords, FALSE));
+    iseq_set_use_block(ISEQ_BODY(iseq)->local_iseq);
 
     if (popped) {
         ADD_INSN(ret, node, pop);
@@ -9070,17 +10188,21 @@ compile_match(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
     INIT_ANCHOR(val);
     switch ((int)type) {
       case NODE_MATCH:
-        ADD_INSN1(recv, node, putobject, node->nd_lit);
-        ADD_INSN2(val, node, getspecial, INT2FIX(0),
-                  INT2FIX(0));
+        {
+            VALUE re = rb_node_regx_string_val(node);
+            RB_OBJ_SET_FROZEN_SHAREABLE(re);
+            ADD_INSN1(recv, node, putobject, re);
+            ADD_INSN2(val, node, getspecial, INT2FIX(0),
+                      INT2FIX(0));
+        }
         break;
       case NODE_MATCH2:
-        CHECK(COMPILE(recv, "receiver", node->nd_recv));
-        CHECK(COMPILE(val, "value", node->nd_value));
+        CHECK(COMPILE(recv, "receiver", RNODE_MATCH2(node)->nd_recv));
+        CHECK(COMPILE(val, "value", RNODE_MATCH2(node)->nd_value));
         break;
       case NODE_MATCH3:
-        CHECK(COMPILE(recv, "receiver", node->nd_value));
-        CHECK(COMPILE(val, "value", node->nd_recv));
+        CHECK(COMPILE(recv, "receiver", RNODE_MATCH3(node)->nd_value));
+        CHECK(COMPILE(val, "value", RNODE_MATCH3(node)->nd_recv));
         break;
     }
 
@@ -9088,8 +10210,8 @@ compile_match(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
     ADD_SEQ(ret, val);
     ADD_SEND(ret, node, idEqTilde, INT2FIX(1));
 
-    if (node->nd_args) {
-        compile_named_capture_assign(iseq, ret, node->nd_args);
+    if (nd_type_p(node, NODE_MATCH2) && RNODE_MATCH2(node)->nd_args) {
+        compile_named_capture_assign(iseq, ret, RNODE_MATCH2(node)->nd_args);
     }
 
     if (popped) {
@@ -9101,7 +10223,7 @@ compile_match(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, i
 static int
 compile_colon2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
-    if (rb_is_const_id(node->nd_mid)) {
+    if (rb_is_const_id(RNODE_COLON2(node)->nd_mid)) {
         /* constant */
         VALUE segments;
         if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache &&
@@ -9131,8 +10253,8 @@ compile_colon2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
     else {
         /* function call */
         ADD_CALL_RECEIVER(ret, node);
-        CHECK(COMPILE(ret, "colon2#nd_head", node->nd_head));
-        ADD_CALL(ret, node, node->nd_mid, INT2FIX(1));
+        CHECK(COMPILE(ret, "colon2#nd_head", RNODE_COLON2(node)->nd_head));
+        ADD_CALL(ret, node, RNODE_COLON2(node)->nd_mid, INT2FIX(1));
     }
     if (popped) {
         ADD_INSN(ret, node, pop);
@@ -9143,19 +10265,20 @@ compile_colon2(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
 static int
 compile_colon3(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped)
 {
-    debugi("colon3#nd_mid", node->nd_mid);
+    debugi("colon3#nd_mid", RNODE_COLON3(node)->nd_mid);
 
     /* add cache insn */
     if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
         ISEQ_BODY(iseq)->ic_size++;
-        VALUE segments = rb_ary_new_from_args(2, ID2SYM(idNULL), ID2SYM(node->nd_mid));
+        VALUE segments = rb_ary_new_from_args(2, ID2SYM(idNULL), ID2SYM(RNODE_COLON3(node)->nd_mid));
+        RB_OBJ_SET_FROZEN_SHAREABLE(segments);
         ADD_INSN1(ret, node, opt_getconstant_path, segments);
         RB_OBJ_WRITTEN(iseq, Qundef, segments);
     }
     else {
         ADD_INSN1(ret, node, putobject, rb_cObject);
         ADD_INSN1(ret, node, putobject, Qtrue);
-        ADD_INSN1(ret, node, getconstant, ID2SYM(node->nd_mid));
+        ADD_INSN1(ret, node, getconstant, ID2SYM(RNODE_COLON3(node)->nd_mid));
     }
 
     if (popped) {
@@ -9168,14 +10291,15 @@ static int
 compile_dots(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped, const int excl)
 {
     VALUE flag = INT2FIX(excl);
-    const NODE *b = node->nd_beg;
-    const NODE *e = node->nd_end;
+    const NODE *b = RNODE_DOT2(node)->nd_beg;
+    const NODE *e = RNODE_DOT2(node)->nd_end;
 
     if (optimizable_range_item_p(b) && optimizable_range_item_p(e)) {
         if (!popped) {
-            VALUE bv = nd_type_p(b, NODE_LIT) ? b->nd_lit : Qnil;
-            VALUE ev = nd_type_p(e, NODE_LIT) ? e->nd_lit : Qnil;
+            VALUE bv = optimized_range_item(b);
+            VALUE ev = optimized_range_item(e);
             VALUE val = rb_range_new(bv, ev, excl);
+            rb_ractor_make_shareable(rb_obj_freeze(val));
             ADD_INSN1(ret, node, putobject, val);
             RB_OBJ_WRITTEN(iseq, Qundef, val);
         }
@@ -9223,14 +10347,20 @@ compile_kw_arg(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
 {
     struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
     LABEL *end_label = NEW_LABEL(nd_line(node));
-    const NODE *default_value = node->nd_body->nd_value;
+    const NODE *default_value = get_nd_value(RNODE_KW_ARG(node)->nd_body);
 
     if (default_value == NODE_SPECIAL_REQUIRED_KEYWORD) {
         /* required argument. do nothing */
         COMPILE_ERROR(ERROR_ARGS "unreachable");
         return COMPILE_NG;
     }
-    else if (nd_type_p(default_value, NODE_LIT) ||
+    else if (nd_type_p(default_value, NODE_SYM) ||
+             nd_type_p(default_value, NODE_REGX) ||
+             nd_type_p(default_value, NODE_LINE) ||
+             nd_type_p(default_value, NODE_INTEGER) ||
+             nd_type_p(default_value, NODE_FLOAT) ||
+             nd_type_p(default_value, NODE_RATIONAL) ||
+             nd_type_p(default_value, NODE_IMAGINARY) ||
              nd_type_p(default_value, NODE_NIL) ||
              nd_type_p(default_value, NODE_TRUE) ||
              nd_type_p(default_value, NODE_FALSE)) {
@@ -9247,7 +10377,7 @@ compile_kw_arg(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node,
 
         ADD_INSN2(ret, node, checkkeyword, INT2FIX(kw_bits_idx + VM_ENV_DATA_SIZE - 1), INT2FIX(keyword_idx));
         ADD_INSNL(ret, node, branchif, end_label);
-        CHECK(COMPILE_POPPED(ret, "keyword default argument", node->nd_body));
+        CHECK(COMPILE_POPPED(ret, "keyword default argument", RNODE_KW_ARG(node)->nd_body));
         ADD_LABEL(ret, end_label);
     }
     return COMPILE_OK;
@@ -9259,41 +10389,17 @@ compile_attrasgn(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
     DECL_ANCHOR(recv);
     DECL_ANCHOR(args);
     unsigned int flag = 0;
-    ID mid = node->nd_mid;
+    ID mid = RNODE_ATTRASGN(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_p(node->nd_args, NODE_LIST) && node->nd_args->nd_alen == 2 &&
-        nd_type_p(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, node, swap);
-            ADD_INSN1(ret, node, topn, INT2FIX(1));
-        }
-        ADD_INSN2(ret, node, opt_aset_with, str,
-                  new_callinfo(iseq, idASET, 2, 0, NULL, FALSE));
-        RB_OBJ_WRITTEN(iseq, Qundef, str);
-        ADD_INSN(ret, node, pop);
-        return COMPILE_OK;
-    }
-
     INIT_ANCHOR(recv);
     INIT_ANCHOR(args);
-    argc = setup_args(iseq, args, node->nd_args, &flag, NULL);
+    argc = setup_args(iseq, args, RNODE_ATTRASGN(node)->nd_args, &flag, NULL);
     CHECK(!NIL_P(argc));
 
-    int asgnflag = COMPILE_RECV(recv, "recv", node);
+    int asgnflag = COMPILE_RECV(recv, "recv", node, RNODE_ATTRASGN(node)->nd_recv);
     CHECK(asgnflag != -1);
     flag |= (unsigned int)asgnflag;
 
@@ -9310,16 +10416,7 @@ compile_attrasgn(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
         ADD_SEQ(ret, recv);
         ADD_SEQ(ret, args);
 
-        if (flag & VM_CALL_ARGS_BLOCKARG) {
-            ADD_INSN1(ret, node, topn, INT2FIX(1));
-            if (flag & VM_CALL_ARGS_SPLAT) {
-                ADD_INSN1(ret, node, putobject, INT2FIX(-1));
-                ADD_SEND_WITH_FLAG(ret, node, idAREF, INT2FIX(1), INT2FIX(asgnflag));
-            }
-            ADD_INSN1(ret, node, setn, FIXNUM_INC(argc, 3));
-            ADD_INSN (ret, node, pop);
-        }
-        else if (flag & VM_CALL_ARGS_SPLAT) {
+        if (flag & VM_CALL_ARGS_SPLAT) {
             ADD_INSN(ret, node, dup);
             ADD_INSN1(ret, node, putobject, INT2FIX(-1));
             ADD_SEND_WITH_FLAG(ret, node, idAREF, INT2FIX(1), INT2FIX(asgnflag));
@@ -9340,6 +10437,371 @@ compile_attrasgn(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node
     return COMPILE_OK;
 }
 
+static int
+compile_make_shareable_node(rb_iseq_t *iseq, LINK_ANCHOR *ret, LINK_ANCHOR *sub, const NODE *value, bool copy)
+{
+    ADD_INSN1(ret, value, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+    ADD_SEQ(ret, sub);
+
+    if (copy) {
+        /*
+         * NEW_CALL(fcore, rb_intern("make_shareable_copy"),
+         *          NEW_LIST(value, loc), loc);
+         */
+        ADD_SEND_WITH_FLAG(ret, value, rb_intern("make_shareable_copy"), INT2FIX(1), INT2FIX(VM_CALL_ARGS_SIMPLE));
+    }
+    else {
+        /*
+         * NEW_CALL(fcore, rb_intern("make_shareable"),
+         *          NEW_LIST(value, loc), loc);
+         */
+        ADD_SEND_WITH_FLAG(ret, value, rb_intern("make_shareable"), INT2FIX(1), INT2FIX(VM_CALL_ARGS_SIMPLE));
+    }
+
+    return COMPILE_OK;
+}
+
+static VALUE
+node_const_decl_val(const NODE *node)
+{
+    VALUE path;
+    switch (nd_type(node)) {
+      case NODE_CDECL:
+        if (RNODE_CDECL(node)->nd_vid) {
+            path = rb_id2str(RNODE_CDECL(node)->nd_vid);
+            goto end;
+        }
+        else {
+            node = RNODE_CDECL(node)->nd_else;
+        }
+        break;
+      case NODE_COLON2:
+        break;
+      case NODE_COLON3:
+        // ::Const
+        path = rb_str_new_cstr("::");
+        rb_str_append(path, rb_id2str(RNODE_COLON3(node)->nd_mid));
+        goto end;
+      default:
+        rb_bug("unexpected node: %s", ruby_node_name(nd_type(node)));
+        UNREACHABLE_RETURN(0);
+    }
+
+    path = rb_ary_new();
+    if (node) {
+        for (; node && nd_type_p(node, NODE_COLON2); node = RNODE_COLON2(node)->nd_head) {
+            rb_ary_push(path, rb_id2str(RNODE_COLON2(node)->nd_mid));
+        }
+        if (node && nd_type_p(node, NODE_CONST)) {
+            // Const::Name
+            rb_ary_push(path, rb_id2str(RNODE_CONST(node)->nd_vid));
+        }
+        else if (node && nd_type_p(node, NODE_COLON3)) {
+            // ::Const::Name
+            rb_ary_push(path, rb_id2str(RNODE_COLON3(node)->nd_mid));
+            rb_ary_push(path, rb_str_new(0, 0));
+        }
+        else {
+            // expression::Name
+            rb_ary_push(path, rb_str_new_cstr("..."));
+        }
+        path = rb_ary_join(rb_ary_reverse(path), rb_str_new_cstr("::"));
+    }
+  end:
+    path = rb_fstring(path);
+    return path;
+}
+
+static VALUE
+const_decl_path(NODE *dest)
+{
+    VALUE path = Qnil;
+    if (!nd_type_p(dest, NODE_CALL)) {
+        path = node_const_decl_val(dest);
+    }
+    return path;
+}
+
+static int
+compile_ensure_shareable_node(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *dest, const NODE *value)
+{
+    /*
+     *. RubyVM::FrozenCore.ensure_shareable(value, const_decl_path(dest))
+     */
+    VALUE path = const_decl_path(dest);
+    ADD_INSN1(ret, value, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+    CHECK(COMPILE(ret, "compile_ensure_shareable_node", value));
+    ADD_INSN1(ret, value, putobject, path);
+    RB_OBJ_WRITTEN(iseq, Qundef, path);
+    ADD_SEND_WITH_FLAG(ret, value, rb_intern("ensure_shareable"), INT2FIX(2), INT2FIX(VM_CALL_ARGS_SIMPLE));
+
+    return COMPILE_OK;
+}
+
+#ifndef SHAREABLE_BARE_EXPRESSION
+#define SHAREABLE_BARE_EXPRESSION 1
+#endif
+
+static int
+compile_shareable_literal_constant(rb_iseq_t *iseq, LINK_ANCHOR *ret, enum rb_parser_shareability shareable, NODE *dest, const NODE *node, size_t level, VALUE *value_p, int *shareable_literal_p)
+{
+# define compile_shareable_literal_constant_next(node, anchor, value_p, shareable_literal_p) \
+    compile_shareable_literal_constant(iseq, anchor, shareable, dest, node, level+1, value_p, shareable_literal_p)
+    VALUE lit = Qnil;
+    DECL_ANCHOR(anchor);
+
+    enum node_type type = node ? nd_type(node) : NODE_NIL;
+    switch (type) {
+      case NODE_TRUE:
+        *value_p = Qtrue;
+        goto compile;
+      case NODE_FALSE:
+        *value_p = Qfalse;
+        goto compile;
+      case NODE_NIL:
+        *value_p = Qnil;
+        goto compile;
+      case NODE_SYM:
+        *value_p = rb_node_sym_string_val(node);
+        goto compile;
+      case NODE_REGX:
+        *value_p = rb_node_regx_string_val(node);
+        goto compile;
+      case NODE_LINE:
+        *value_p = rb_node_line_lineno_val(node);
+        goto compile;
+      case NODE_INTEGER:
+        *value_p = rb_node_integer_literal_val(node);
+        goto compile;
+      case NODE_FLOAT:
+        *value_p = rb_node_float_literal_val(node);
+        goto compile;
+      case NODE_RATIONAL:
+        *value_p = rb_node_rational_literal_val(node);
+        goto compile;
+      case NODE_IMAGINARY:
+        *value_p = rb_node_imaginary_literal_val(node);
+        goto compile;
+      case NODE_ENCODING:
+        *value_p = rb_node_encoding_val(node);
+
+      compile:
+        CHECK(COMPILE(ret, "shareable_literal_constant", node));
+        *shareable_literal_p = 1;
+        return COMPILE_OK;
+
+      case NODE_DSTR:
+        CHECK(COMPILE(ret, "shareable_literal_constant", node));
+        if (shareable == rb_parser_shareable_literal) {
+            /*
+             *  NEW_CALL(node, idUMinus, 0, loc);
+             *
+             *  -"#{var}"
+             */
+            ADD_SEND_WITH_FLAG(ret, node, idUMinus, INT2FIX(0), INT2FIX(VM_CALL_ARGS_SIMPLE));
+        }
+        *value_p = Qundef;
+        *shareable_literal_p = 1;
+        return COMPILE_OK;
+
+      case NODE_STR:{
+        VALUE lit = rb_node_str_string_val(node);
+        ADD_INSN1(ret, node, putobject, lit);
+        RB_OBJ_WRITTEN(iseq, Qundef, lit);
+        *value_p = lit;
+        *shareable_literal_p = 1;
+
+        return COMPILE_OK;
+      }
+
+      case NODE_FILE:{
+        VALUE lit = rb_node_file_path_val(node);
+        ADD_INSN1(ret, node, putobject, lit);
+        RB_OBJ_WRITTEN(iseq, Qundef, lit);
+        *value_p = lit;
+        *shareable_literal_p = 1;
+
+        return COMPILE_OK;
+      }
+
+      case NODE_ZLIST:{
+        VALUE lit = rb_ary_new();
+        OBJ_FREEZE(lit);
+        ADD_INSN1(ret, node, putobject, lit);
+        RB_OBJ_WRITTEN(iseq, Qundef, lit);
+        *value_p = lit;
+        *shareable_literal_p = 1;
+
+        return COMPILE_OK;
+      }
+
+      case NODE_LIST:{
+        INIT_ANCHOR(anchor);
+        lit = rb_ary_new();
+        for (NODE *n = (NODE *)node; n; n = RNODE_LIST(n)->nd_next) {
+            VALUE val;
+            int shareable_literal_p2;
+            NODE *elt = RNODE_LIST(n)->nd_head;
+            if (elt) {
+                CHECK(compile_shareable_literal_constant_next(elt, anchor, &val, &shareable_literal_p2));
+                if (shareable_literal_p2) {
+                    /* noop */
+                }
+                else if (RTEST(lit)) {
+                    rb_ary_clear(lit);
+                    lit = Qfalse;
+                }
+            }
+            if (RTEST(lit)) {
+                if (!UNDEF_P(val)) {
+                    rb_ary_push(lit, val);
+                }
+                else {
+                    rb_ary_clear(lit);
+                    lit = Qnil; /* make shareable at runtime */
+                }
+            }
+        }
+        break;
+      }
+      case NODE_HASH:{
+        if (!RNODE_HASH(node)->nd_brace) {
+            *value_p = Qundef;
+            *shareable_literal_p = 0;
+            return COMPILE_OK;
+        }
+        for (NODE *n = RNODE_HASH(node)->nd_head; n; n = RNODE_LIST(RNODE_LIST(n)->nd_next)->nd_next) {
+            if (!RNODE_LIST(n)->nd_head) {
+                // If the hash node have a keyword splat, fall back to the default case.
+                goto compile_shareable;
+            }
+        }
+
+        INIT_ANCHOR(anchor);
+        lit = rb_hash_new();
+        for (NODE *n = RNODE_HASH(node)->nd_head; n; n = RNODE_LIST(RNODE_LIST(n)->nd_next)->nd_next) {
+            VALUE key_val = 0;
+            VALUE value_val = 0;
+            int shareable_literal_p2;
+            NODE *key = RNODE_LIST(n)->nd_head;
+            NODE *val = RNODE_LIST(RNODE_LIST(n)->nd_next)->nd_head;
+            CHECK(compile_shareable_literal_constant_next(key, anchor, &key_val, &shareable_literal_p2));
+            if (shareable_literal_p2) {
+                /* noop */
+            }
+            else if (RTEST(lit)) {
+                rb_hash_clear(lit);
+                lit = Qfalse;
+            }
+            CHECK(compile_shareable_literal_constant_next(val, anchor, &value_val, &shareable_literal_p2));
+            if (shareable_literal_p2) {
+                /* noop */
+            }
+            else if (RTEST(lit)) {
+                rb_hash_clear(lit);
+                lit = Qfalse;
+            }
+            if (RTEST(lit)) {
+                if (!UNDEF_P(key_val) && !UNDEF_P(value_val)) {
+                    rb_hash_aset(lit, key_val, value_val);
+                }
+                else {
+                    rb_hash_clear(lit);
+                    lit = Qnil; /* make shareable at runtime */
+                }
+            }
+        }
+        break;
+      }
+
+      default:
+
+      compile_shareable:
+        if (shareable == rb_parser_shareable_literal &&
+            (SHAREABLE_BARE_EXPRESSION || level > 0)) {
+            CHECK(compile_ensure_shareable_node(iseq, ret, dest, node));
+            *value_p = Qundef;
+            *shareable_literal_p = 1;
+            return COMPILE_OK;
+        }
+        CHECK(COMPILE(ret, "shareable_literal_constant", node));
+        *value_p = Qundef;
+        *shareable_literal_p = 0;
+        return COMPILE_OK;
+    }
+
+    /* Array or Hash that does not have keyword splat */
+    if (!lit) {
+        if (nd_type(node) == NODE_LIST) {
+            ADD_INSN1(anchor, node, newarray, INT2FIX(RNODE_LIST(node)->as.nd_alen));
+        }
+        else if (nd_type(node) == NODE_HASH) {
+            int len = (int)RNODE_LIST(RNODE_HASH(node)->nd_head)->as.nd_alen;
+            ADD_INSN1(anchor, node, newhash, INT2FIX(len));
+        }
+        *value_p = Qundef;
+        *shareable_literal_p = 0;
+        ADD_SEQ(ret, anchor);
+        return COMPILE_OK;
+    }
+    if (NIL_P(lit)) {
+        // if shareable_literal, all elements should have been ensured
+        // as shareable
+        if (nd_type(node) == NODE_LIST) {
+            ADD_INSN1(anchor, node, newarray, INT2FIX(RNODE_LIST(node)->as.nd_alen));
+        }
+        else if (nd_type(node) == NODE_HASH) {
+            int len = (int)RNODE_LIST(RNODE_HASH(node)->nd_head)->as.nd_alen;
+            ADD_INSN1(anchor, node, newhash, INT2FIX(len));
+        }
+        CHECK(compile_make_shareable_node(iseq, ret, anchor, node, false));
+        *value_p = Qundef;
+        *shareable_literal_p = 1;
+    }
+    else {
+        VALUE val = rb_ractor_make_shareable(lit);
+        ADD_INSN1(ret, node, putobject, val);
+        RB_OBJ_WRITTEN(iseq, Qundef, val);
+        *value_p = val;
+        *shareable_literal_p = 1;
+    }
+
+    return COMPILE_OK;
+}
+
+static int
+compile_shareable_constant_value(rb_iseq_t *iseq, LINK_ANCHOR *ret, enum rb_parser_shareability shareable, const NODE *lhs, const NODE *value)
+{
+    int literal_p = 0;
+    VALUE val;
+    DECL_ANCHOR(anchor);
+    INIT_ANCHOR(anchor);
+
+    switch (shareable) {
+      case rb_parser_shareable_none:
+        CHECK(COMPILE(ret, "compile_shareable_constant_value", value));
+        return COMPILE_OK;
+
+      case rb_parser_shareable_literal:
+        CHECK(compile_shareable_literal_constant(iseq, anchor, shareable, (NODE *)lhs, value, 0, &val, &literal_p));
+        ADD_SEQ(ret, anchor);
+        return COMPILE_OK;
+
+      case rb_parser_shareable_copy:
+      case rb_parser_shareable_everything:
+        CHECK(compile_shareable_literal_constant(iseq, anchor, shareable, (NODE *)lhs, value, 0, &val, &literal_p));
+        if (!literal_p) {
+            CHECK(compile_make_shareable_node(iseq, ret, anchor, value, shareable == rb_parser_shareable_copy));
+        }
+        else {
+            ADD_SEQ(ret, anchor);
+        }
+        return COMPILE_OK;
+      default:
+        rb_bug("unexpected rb_parser_shareability: %d", shareable);
+    }
+}
+
 static int iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, int popped);
 /**
   compile each node
@@ -9356,8 +10818,7 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, const NODE *node, int poppe
             int lineno = ISEQ_COMPILE_DATA(iseq)->last_line;
             if (lineno == 0) lineno = FIX2INT(rb_iseq_first_lineno(iseq));
             debugs("node: NODE_NIL(implicit)\n");
-            NODE dummy_line_node = generate_dummy_line_node(lineno, -1);
-            ADD_INSN(ret, &dummy_line_node, putnil);
+            ADD_SYNTHETIC_INSN(ret, lineno, -1, putnil);
         }
         return COMPILE_OK;
     }
@@ -9375,10 +10836,10 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         /* ignore */
     }
     else {
-        if (node->flags & NODE_FL_NEWLINE) {
+        if (nd_fl_newline(node)) {
             int event = RUBY_EVENT_LINE;
             ISEQ_COMPILE_DATA(iseq)->last_line = line;
-            if (ISEQ_COVERAGE(iseq) && ISEQ_LINE_COVERAGE(iseq)) {
+            if (line > 0 && ISEQ_COVERAGE(iseq) && ISEQ_LINE_COVERAGE(iseq)) {
                 event |= RUBY_EVENT_COVERAGE_LINE;
             }
             ADD_TRACE(ret, event);
@@ -9430,7 +10891,7 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         CHECK(compile_retry(iseq, ret, node, popped));
         break;
       case NODE_BEGIN:{
-        CHECK(COMPILE_(ret, "NODE_BEGIN", node->nd_body, popped));
+        CHECK(COMPILE_(ret, "NODE_BEGIN", RNODE_BEGIN(node)->nd_body, popped));
         break;
       }
       case NODE_RESCUE:
@@ -9446,7 +10907,7 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       case NODE_AND:
       case NODE_OR:{
         LABEL *end_label = NEW_LABEL(line);
-        CHECK(COMPILE(ret, "nd_1st", node->nd_1st));
+        CHECK(COMPILE(ret, "nd_1st", RNODE_OR(node)->nd_1st));
         if (!popped) {
             ADD_INSN(ret, node, dup);
         }
@@ -9459,7 +10920,7 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         if (!popped) {
             ADD_INSN(ret, node, pop);
         }
-        CHECK(COMPILE_(ret, "nd_2nd", node->nd_2nd, popped));
+        CHECK(COMPILE_(ret, "nd_2nd", RNODE_OR(node)->nd_2nd, popped));
         ADD_LABEL(ret, end_label);
         break;
       }
@@ -9470,11 +10931,11 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       }
 
       case NODE_LASGN:{
-        ID id = node->nd_vid;
+        ID id = RNODE_LASGN(node)->nd_vid;
         int idx = ISEQ_BODY(body->local_iseq)->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));
+        CHECK(COMPILE(ret, "rvalue", RNODE_LASGN(node)->nd_value));
 
         if (!popped) {
             ADD_INSN(ret, node, dup);
@@ -9484,8 +10945,8 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       }
       case NODE_DASGN: {
         int idx, lv, ls;
-        ID id = node->nd_vid;
-        CHECK(COMPILE(ret, "dvalue", node->nd_value));
+        ID id = RNODE_DASGN(node)->nd_vid;
+        CHECK(COMPILE(ret, "dvalue", RNODE_DASGN(node)->nd_value));
         debugi("dassn id", rb_id2str(id) ? id : '*');
 
         if (!popped) {
@@ -9503,27 +10964,27 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       }
       case NODE_GASGN:{
-        CHECK(COMPILE(ret, "lvalue", node->nd_value));
+        CHECK(COMPILE(ret, "lvalue", RNODE_GASGN(node)->nd_value));
 
         if (!popped) {
             ADD_INSN(ret, node, dup);
         }
-        ADD_INSN1(ret, node, setglobal, ID2SYM(node->nd_entry));
+        ADD_INSN1(ret, node, setglobal, ID2SYM(RNODE_GASGN(node)->nd_vid));
         break;
       }
       case NODE_IASGN:{
-        CHECK(COMPILE(ret, "lvalue", node->nd_value));
+        CHECK(COMPILE(ret, "lvalue", RNODE_IASGN(node)->nd_value));
         if (!popped) {
             ADD_INSN(ret, node, dup);
         }
         ADD_INSN2(ret, node, setinstancevariable,
-                  ID2SYM(node->nd_vid),
-                  get_ivar_ic_value(iseq,node->nd_vid));
+                  ID2SYM(RNODE_IASGN(node)->nd_vid),
+                  get_ivar_ic_value(iseq,RNODE_IASGN(node)->nd_vid));
         break;
       }
       case NODE_CDECL:{
-        if (node->nd_vid) {
-            CHECK(COMPILE(ret, "lvalue", node->nd_value));
+        if (RNODE_CDECL(node)->nd_vid) {
+            CHECK(compile_shareable_constant_value(iseq, ret, RNODE_CDECL(node)->shareability, node, RNODE_CDECL(node)->nd_value));
 
             if (!popped) {
                 ADD_INSN(ret, node, dup);
@@ -9531,11 +10992,11 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
 
             ADD_INSN1(ret, node, putspecialobject,
                       INT2FIX(VM_SPECIAL_OBJECT_CONST_BASE));
-            ADD_INSN1(ret, node, setconstant, ID2SYM(node->nd_vid));
+            ADD_INSN1(ret, node, setconstant, ID2SYM(RNODE_CDECL(node)->nd_vid));
         }
         else {
-            compile_cpath(ret, iseq, node->nd_else);
-            CHECK(COMPILE(ret, "lvalue", node->nd_value));
+            compile_cpath(ret, iseq, RNODE_CDECL(node)->nd_else);
+            CHECK(compile_shareable_constant_value(iseq, ret, RNODE_CDECL(node)->shareability, node, RNODE_CDECL(node)->nd_value));
             ADD_INSN(ret, node, swap);
 
             if (!popped) {
@@ -9543,18 +11004,18 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
                 ADD_INSN(ret, node, swap);
             }
 
-            ADD_INSN1(ret, node, setconstant, ID2SYM(node->nd_else->nd_mid));
+            ADD_INSN1(ret, node, setconstant, ID2SYM(get_node_colon_nd_mid(RNODE_CDECL(node)->nd_else)));
         }
         break;
       }
       case NODE_CVASGN:{
-        CHECK(COMPILE(ret, "cvasgn val", node->nd_value));
+        CHECK(COMPILE(ret, "cvasgn val", RNODE_CVASGN(node)->nd_value));
         if (!popped) {
             ADD_INSN(ret, node, dup);
         }
         ADD_INSN2(ret, node, setclassvariable,
-                  ID2SYM(node->nd_vid),
-                  get_cvar_ic_value(iseq,node->nd_vid));
+                  ID2SYM(RNODE_CVASGN(node)->nd_vid),
+                  get_cvar_ic_value(iseq, RNODE_CVASGN(node)->nd_vid));
         break;
       }
       case NODE_OP_ASGN1:
@@ -9587,7 +11048,7 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         CHECK(compile_super(iseq, ret, node, popped, type));
         break;
       case NODE_LIST:{
-        CHECK(compile_array(iseq, ret, node, popped) >= 0);
+        CHECK(compile_array(iseq, ret, node, popped, TRUE) >= 0);
         break;
       }
       case NODE_ZLIST:{
@@ -9596,18 +11057,6 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         }
         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, node, newarray, INT2FIX(node->nd_alen));
-        break;
-      }
       case NODE_HASH:
         CHECK(compile_hash(iseq, ret, node, FALSE, popped) >= 0);
         break;
@@ -9619,18 +11068,18 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       case NODE_LVAR:{
         if (!popped) {
-            compile_lvar(iseq, ret, node, node->nd_vid);
+            compile_lvar(iseq, ret, node, RNODE_LVAR(node)->nd_vid);
         }
         break;
       }
       case NODE_DVAR:{
         int lv, idx, ls;
-        debugi("nd_vid", node->nd_vid);
+        debugi("nd_vid", RNODE_DVAR(node)->nd_vid);
         if (!popped) {
-            idx = get_dyna_var_idx(iseq, node->nd_vid, &lv, &ls);
+            idx = get_dyna_var_idx(iseq, RNODE_DVAR(node)->nd_vid, &lv, &ls);
             if (idx < 0) {
                 COMPILE_ERROR(ERROR_ARGS "unknown dvar (%"PRIsVALUE")",
-                              rb_id2str(node->nd_vid));
+                              rb_id2str(RNODE_DVAR(node)->nd_vid));
                 goto ng;
             }
             ADD_GETLOCAL(ret, node, ls - idx, lv);
@@ -9638,34 +11087,35 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       }
       case NODE_GVAR:{
-        ADD_INSN1(ret, node, getglobal, ID2SYM(node->nd_entry));
+        ADD_INSN1(ret, node, getglobal, ID2SYM(RNODE_GVAR(node)->nd_vid));
         if (popped) {
             ADD_INSN(ret, node, pop);
         }
         break;
       }
       case NODE_IVAR:{
-        debugi("nd_vid", node->nd_vid);
+        debugi("nd_vid", RNODE_IVAR(node)->nd_vid);
         if (!popped) {
             ADD_INSN2(ret, node, getinstancevariable,
-                      ID2SYM(node->nd_vid),
-                      get_ivar_ic_value(iseq,node->nd_vid));
+                      ID2SYM(RNODE_IVAR(node)->nd_vid),
+                      get_ivar_ic_value(iseq, RNODE_IVAR(node)->nd_vid));
         }
         break;
       }
       case NODE_CONST:{
-        debugi("nd_vid", node->nd_vid);
+        debugi("nd_vid", RNODE_CONST(node)->nd_vid);
 
         if (ISEQ_COMPILE_DATA(iseq)->option->inline_const_cache) {
             body->ic_size++;
-            VALUE segments = rb_ary_new_from_args(1, ID2SYM(node->nd_vid));
+            VALUE segments = rb_ary_new_from_args(1, ID2SYM(RNODE_CONST(node)->nd_vid));
+            RB_OBJ_SET_FROZEN_SHAREABLE(segments);
             ADD_INSN1(ret, node, opt_getconstant_path, segments);
             RB_OBJ_WRITTEN(iseq, Qundef, segments);
         }
         else {
             ADD_INSN(ret, node, putnil);
             ADD_INSN1(ret, node, putobject, Qtrue);
-            ADD_INSN1(ret, node, getconstant, ID2SYM(node->nd_vid));
+            ADD_INSN1(ret, node, getconstant, ID2SYM(RNODE_CONST(node)->nd_vid));
         }
 
         if (popped) {
@@ -9676,26 +11126,26 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       case NODE_CVAR:{
         if (!popped) {
             ADD_INSN2(ret, node, getclassvariable,
-                      ID2SYM(node->nd_vid),
-                      get_cvar_ic_value(iseq,node->nd_vid));
+                      ID2SYM(RNODE_CVAR(node)->nd_vid),
+                      get_cvar_ic_value(iseq, RNODE_CVAR(node)->nd_vid));
         }
         break;
       }
       case NODE_NTH_REF:{
         if (!popped) {
-            if (!node->nd_nth) {
+            if (!RNODE_NTH_REF(node)->nd_nth) {
                 ADD_INSN(ret, node, putnil);
                 break;
             }
             ADD_INSN2(ret, node, getspecial, INT2FIX(1) /* '~'  */,
-                      INT2FIX(node->nd_nth << 1));
+                      INT2FIX(RNODE_NTH_REF(node)->nd_nth << 1));
         }
         break;
       }
       case NODE_BACK_REF:{
         if (!popped) {
             ADD_INSN2(ret, node, getspecial, INT2FIX(1) /* '~' */,
-                      INT2FIX(0x01 | (node->nd_nth << 1)));
+                      INT2FIX(0x01 | (RNODE_BACK_REF(node)->nd_nth << 1)));
         }
         break;
       }
@@ -9704,36 +11154,89 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       case NODE_MATCH3:
         CHECK(compile_match(iseq, ret, node, popped, type));
         break;
-      case NODE_LIT:{
-        debugp_param("lit", node->nd_lit);
+      case NODE_SYM:{
+        if (!popped) {
+            ADD_INSN1(ret, node, putobject, rb_node_sym_string_val(node));
+        }
+        break;
+      }
+      case NODE_LINE:{
+        if (!popped) {
+            ADD_INSN1(ret, node, putobject, rb_node_line_lineno_val(node));
+        }
+        break;
+      }
+      case NODE_ENCODING:{
+        if (!popped) {
+            ADD_INSN1(ret, node, putobject, rb_node_encoding_val(node));
+        }
+        break;
+      }
+      case NODE_INTEGER:{
+        VALUE lit = rb_node_integer_literal_val(node);
+        if (!SPECIAL_CONST_P(lit)) RB_OBJ_SET_SHAREABLE(lit);
+        debugp_param("integer", lit);
+        if (!popped) {
+            ADD_INSN1(ret, node, putobject, lit);
+            RB_OBJ_WRITTEN(iseq, Qundef, lit);
+        }
+        break;
+      }
+      case NODE_FLOAT:{
+        VALUE lit = rb_node_float_literal_val(node);
+        if (!SPECIAL_CONST_P(lit)) RB_OBJ_SET_SHAREABLE(lit);
+        debugp_param("float", lit);
+        if (!popped) {
+            ADD_INSN1(ret, node, putobject, lit);
+            RB_OBJ_WRITTEN(iseq, Qundef, lit);
+        }
+        break;
+      }
+      case NODE_RATIONAL:{
+        VALUE lit = rb_node_rational_literal_val(node);
+        rb_ractor_make_shareable(lit);
+        debugp_param("rational", lit);
         if (!popped) {
-            ADD_INSN1(ret, node, putobject, node->nd_lit);
-            RB_OBJ_WRITTEN(iseq, Qundef, node->nd_lit);
+            ADD_INSN1(ret, node, putobject, lit);
+            RB_OBJ_WRITTEN(iseq, Qundef, lit);
         }
         break;
       }
+      case NODE_IMAGINARY:{
+        VALUE lit = rb_node_imaginary_literal_val(node);
+        rb_ractor_make_shareable(lit);
+        debugp_param("imaginary", lit);
+        if (!popped) {
+            ADD_INSN1(ret, node, putobject, lit);
+            RB_OBJ_WRITTEN(iseq, Qundef, lit);
+        }
+        break;
+      }
+      case NODE_FILE:
       case NODE_STR:{
-        debugp_param("nd_lit", node->nd_lit);
+        debugp_param("nd_lit", get_string_value(node));
         if (!popped) {
-            VALUE lit = node->nd_lit;
-            if (!ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal) {
-                lit = rb_fstring(lit);
+            VALUE lit = get_string_value(node);
+            const rb_compile_option_t *option = ISEQ_COMPILE_DATA(iseq)->option;
+            if ((option->debug_frozen_string_literal || RTEST(ruby_debug)) &&
+                option->frozen_string_literal != ISEQ_FROZEN_STRING_LITERAL_DISABLED) {
+                lit = rb_str_with_debug_created_info(lit, rb_iseq_path(iseq), line);
+                RB_OBJ_SET_SHAREABLE(lit);
+            }
+            switch (option->frozen_string_literal) {
+              case ISEQ_FROZEN_STRING_LITERAL_UNSET:
+                ADD_INSN1(ret, node, putchilledstring, lit);
+                break;
+              case ISEQ_FROZEN_STRING_LITERAL_DISABLED:
                 ADD_INSN1(ret, node, 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);
-                }
+                break;
+              case ISEQ_FROZEN_STRING_LITERAL_ENABLED:
                 ADD_INSN1(ret, node, putobject, lit);
-                RB_OBJ_WRITTEN(iseq, Qundef, lit);
+                break;
+              default:
+                rb_bug("invalid frozen_string_literal");
             }
+            RB_OBJ_WRITTEN(iseq, Qundef, lit);
         }
         break;
       }
@@ -9747,7 +11250,7 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       }
       case NODE_XSTR:{
         ADD_CALL_RECEIVER(ret, node);
-        VALUE str = rb_fstring(node->nd_lit);
+        VALUE str = rb_node_str_string_val(node);
         ADD_INSN1(ret, node, putobject, str);
         RB_OBJ_WRITTEN(iseq, Qundef, str);
         ADD_CALL(ret, node, idBackquote, INT2FIX(1));
@@ -9768,20 +11271,24 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       }
       case NODE_EVSTR:
-        CHECK(compile_evstr(iseq, ret, node->nd_body, popped));
+        CHECK(compile_evstr(iseq, ret, RNODE_EVSTR(node)->nd_body, popped));
         break;
-      case NODE_DREGX:{
-        compile_dregx(iseq, ret, node);
-
-        if (popped) {
-            ADD_INSN(ret, node, pop);
+      case NODE_REGX:{
+        if (!popped) {
+            VALUE lit = rb_node_regx_string_val(node);
+            RB_OBJ_SET_SHAREABLE(lit);
+            ADD_INSN1(ret, node, putobject, lit);
+            RB_OBJ_WRITTEN(iseq, Qundef, lit);
         }
         break;
       }
+      case NODE_DREGX:
+        compile_dregx(iseq, ret, node, popped);
+        break;
       case NODE_ONCE:{
         int ic_index = body->ise_size++;
         const rb_iseq_t *block_iseq;
-        block_iseq = NEW_CHILD_ISEQ(node->nd_body, make_name_for_block(iseq), ISEQ_TYPE_PLAIN, line);
+        block_iseq = NEW_CHILD_ISEQ(RNODE_ONCE(node)->nd_body, make_name_for_block(iseq), ISEQ_TYPE_PLAIN, line);
 
         ADD_INSN2(ret, node, once, block_iseq, INT2FIX(ic_index));
         RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)block_iseq);
@@ -9793,36 +11300,53 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       }
       case NODE_ARGSCAT:{
         if (popped) {
-            CHECK(COMPILE(ret, "argscat head", node->nd_head));
+            CHECK(COMPILE(ret, "argscat head", RNODE_ARGSCAT(node)->nd_head));
             ADD_INSN1(ret, node, splatarray, Qfalse);
             ADD_INSN(ret, node, pop);
-            CHECK(COMPILE(ret, "argscat body", node->nd_body));
+            CHECK(COMPILE(ret, "argscat body", RNODE_ARGSCAT(node)->nd_body));
             ADD_INSN1(ret, node, splatarray, Qfalse);
             ADD_INSN(ret, node, pop);
         }
         else {
-            CHECK(COMPILE(ret, "argscat head", node->nd_head));
-            CHECK(COMPILE(ret, "argscat body", node->nd_body));
-            ADD_INSN(ret, node, concatarray);
+            CHECK(COMPILE(ret, "argscat head", RNODE_ARGSCAT(node)->nd_head));
+            const NODE *body_node = RNODE_ARGSCAT(node)->nd_body;
+            if (nd_type_p(body_node, NODE_LIST)) {
+                CHECK(compile_array(iseq, ret, body_node, popped, FALSE) >= 0);
+            }
+            else {
+                CHECK(COMPILE(ret, "argscat body", body_node));
+                ADD_INSN(ret, node, concattoarray);
+            }
         }
         break;
       }
       case NODE_ARGSPUSH:{
         if (popped) {
-            CHECK(COMPILE(ret, "argspush head", node->nd_head));
+            CHECK(COMPILE(ret, "argspush head", RNODE_ARGSPUSH(node)->nd_head));
             ADD_INSN1(ret, node, splatarray, Qfalse);
             ADD_INSN(ret, node, pop);
-            CHECK(COMPILE_(ret, "argspush body", node->nd_body, popped));
+            CHECK(COMPILE_(ret, "argspush body", RNODE_ARGSPUSH(node)->nd_body, popped));
         }
         else {
-            CHECK(COMPILE(ret, "argspush head", node->nd_head));
-            CHECK(compile_array_1(iseq, ret, node->nd_body));
-            ADD_INSN(ret, node, concatarray);
+            CHECK(COMPILE(ret, "argspush head", RNODE_ARGSPUSH(node)->nd_head));
+            const NODE *body_node = RNODE_ARGSPUSH(node)->nd_body;
+            if (keyword_node_p(body_node)) {
+                CHECK(COMPILE_(ret, "array element", body_node, FALSE));
+                ADD_INSN(ret, node, pushtoarraykwsplat);
+            }
+            else if (static_literal_node_p(body_node, iseq, false)) {
+                ADD_INSN1(ret, body_node, putobject, static_literal_value(body_node, iseq));
+                ADD_INSN1(ret, node, pushtoarray, INT2FIX(1));
+            }
+            else {
+                CHECK(COMPILE_(ret, "array element", body_node, FALSE));
+                ADD_INSN1(ret, node, pushtoarray, INT2FIX(1));
+            }
         }
         break;
       }
       case NODE_SPLAT:{
-        CHECK(COMPILE(ret, "splat", node->nd_head));
+        CHECK(COMPILE(ret, "splat", RNODE_SPLAT(node)->nd_head));
         ADD_INSN1(ret, node, splatarray, Qtrue);
 
         if (popped) {
@@ -9831,8 +11355,8 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       }
       case NODE_DEFN:{
-        ID mid = node->nd_mid;
-        const rb_iseq_t *method_iseq = NEW_ISEQ(node->nd_defn,
+        ID mid = RNODE_DEFN(node)->nd_mid;
+        const rb_iseq_t *method_iseq = NEW_ISEQ(RNODE_DEFN(node)->nd_defn,
                                                 rb_id2str(mid),
                                                 ISEQ_TYPE_METHOD, line);
 
@@ -9847,13 +11371,13 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       }
       case NODE_DEFS:{
-        ID mid = node->nd_mid;
-        const rb_iseq_t * singleton_method_iseq = NEW_ISEQ(node->nd_defn,
+        ID mid = RNODE_DEFS(node)->nd_mid;
+        const rb_iseq_t * singleton_method_iseq = NEW_ISEQ(RNODE_DEFS(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));
+        CHECK(COMPILE(ret, "defs: recv", RNODE_DEFS(node)->nd_recv));
         ADD_INSN2(ret, node, definesmethod, ID2SYM(mid), singleton_method_iseq);
         RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)singleton_method_iseq);
 
@@ -9865,8 +11389,8 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       case NODE_ALIAS:{
         ADD_INSN1(ret, node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
         ADD_INSN1(ret, node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
-        CHECK(COMPILE(ret, "alias arg1", node->nd_1st));
-        CHECK(COMPILE(ret, "alias arg2", node->nd_2nd));
+        CHECK(COMPILE(ret, "alias arg1", RNODE_ALIAS(node)->nd_1st));
+        CHECK(COMPILE(ret, "alias arg2", RNODE_ALIAS(node)->nd_2nd));
         ADD_SEND(ret, node, id_core_set_method_alias, INT2FIX(3));
 
         if (popped) {
@@ -9876,8 +11400,8 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       }
       case NODE_VALIAS:{
         ADD_INSN1(ret, node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
-        ADD_INSN1(ret, node, putobject, ID2SYM(node->nd_alias));
-        ADD_INSN1(ret, node, putobject, ID2SYM(node->nd_orig));
+        ADD_INSN1(ret, node, putobject, ID2SYM(RNODE_VALIAS(node)->nd_alias));
+        ADD_INSN1(ret, node, putobject, ID2SYM(RNODE_VALIAS(node)->nd_orig));
         ADD_SEND(ret, node, id_core_set_variable_alias, INT2FIX(2));
 
         if (popped) {
@@ -9886,10 +11410,18 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       }
       case NODE_UNDEF:{
-        ADD_INSN1(ret, node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
-        ADD_INSN1(ret, node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
-        CHECK(COMPILE(ret, "undef arg", node->nd_undef));
-        ADD_SEND(ret, node, id_core_undef_method, INT2FIX(2));
+        const rb_parser_ary_t *ary = RNODE_UNDEF(node)->nd_undefs;
+
+        for (long i = 0; i < ary->len; i++) {
+            ADD_INSN1(ret, node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
+            ADD_INSN1(ret, node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_CBASE));
+            CHECK(COMPILE(ret, "undef arg", ary->data[i]));
+            ADD_SEND(ret, node, id_core_undef_method, INT2FIX(2));
+
+            if (i < ary->len - 1) {
+                ADD_INSN(ret, node, pop);
+            }
+        }
 
         if (popped) {
             ADD_INSN(ret, node, pop);
@@ -9897,15 +11429,15 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       }
       case NODE_CLASS:{
-        const rb_iseq_t *class_iseq = NEW_CHILD_ISEQ(node->nd_body,
-                                                     rb_str_freeze(rb_sprintf("<class:%"PRIsVALUE">", rb_id2str(node->nd_cpath->nd_mid))),
+        const rb_iseq_t *class_iseq = NEW_CHILD_ISEQ(RNODE_CLASS(node)->nd_body,
+                                                     rb_str_freeze(rb_sprintf("<class:%"PRIsVALUE">", rb_id2str(get_node_colon_nd_mid(RNODE_CLASS(node)->nd_cpath)))),
                                                      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);
+            (RNODE_CLASS(node)->nd_super ? VM_DEFINECLASS_FLAG_HAS_SUPERCLASS : 0) |
+            compile_cpath(ret, iseq, RNODE_CLASS(node)->nd_cpath);
 
-        CHECK(COMPILE(ret, "super", node->nd_super));
-        ADD_INSN3(ret, node, defineclass, ID2SYM(node->nd_cpath->nd_mid), class_iseq, INT2FIX(flags));
+        CHECK(COMPILE(ret, "super", RNODE_CLASS(node)->nd_super));
+        ADD_INSN3(ret, node, defineclass, ID2SYM(get_node_colon_nd_mid(RNODE_CLASS(node)->nd_cpath)), class_iseq, INT2FIX(flags));
         RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)class_iseq);
 
         if (popped) {
@@ -9914,14 +11446,14 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       }
       case NODE_MODULE:{
-        const rb_iseq_t *module_iseq = NEW_CHILD_ISEQ(node->nd_body,
-                                                      rb_str_freeze(rb_sprintf("<module:%"PRIsVALUE">", rb_id2str(node->nd_cpath->nd_mid))),
+        const rb_iseq_t *module_iseq = NEW_CHILD_ISEQ(RNODE_MODULE(node)->nd_body,
+                                                      rb_str_freeze(rb_sprintf("<module:%"PRIsVALUE">", rb_id2str(get_node_colon_nd_mid(RNODE_MODULE(node)->nd_cpath)))),
                                                       ISEQ_TYPE_CLASS, line);
         const int flags = VM_DEFINECLASS_TYPE_MODULE |
-            compile_cpath(ret, iseq, node->nd_cpath);
+            compile_cpath(ret, iseq, RNODE_MODULE(node)->nd_cpath);
 
         ADD_INSN (ret, node, putnil); /* dummy */
-        ADD_INSN3(ret, node, defineclass, ID2SYM(node->nd_cpath->nd_mid), module_iseq, INT2FIX(flags));
+        ADD_INSN3(ret, node, defineclass, ID2SYM(get_node_colon_nd_mid(RNODE_MODULE(node)->nd_cpath)), module_iseq, INT2FIX(flags));
         RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)module_iseq);
 
         if (popped) {
@@ -9931,10 +11463,10 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
       }
       case NODE_SCLASS:{
         ID singletonclass;
-        const rb_iseq_t *singleton_class = NEW_ISEQ(node->nd_body, rb_fstring_lit("singleton class"),
+        const rb_iseq_t *singleton_class = NEW_ISEQ(RNODE_SCLASS(node)->nd_body, rb_fstring_lit("singleton class"),
                                                     ISEQ_TYPE_CLASS, line);
 
-        CHECK(COMPILE(ret, "sclass#recv", node->nd_recv));
+        CHECK(COMPILE(ret, "sclass#recv", RNODE_SCLASS(node)->nd_recv));
         ADD_INSN (ret, node, putnil);
         CONST_ID(singletonclass, "singletonclass");
         ADD_INSN3(ret, node, defineclass,
@@ -10003,7 +11535,7 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         break;
       case NODE_DEFINED:
         if (!popped) {
-            CHECK(compile_defined_expr(iseq, ret, node, Qtrue));
+            CHECK(compile_defined_expr(iseq, ret, node, Qtrue, false));
         }
         break;
       case NODE_POSTEXE:{
@@ -10012,10 +11544,9 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
          */
         int is_index = body->ise_size++;
         struct rb_iseq_new_with_callback_callback_func *ifunc =
-            rb_iseq_new_with_callback_new_callback(build_postexe_iseq, node->nd_body);
+            rb_iseq_new_with_callback_new_callback(build_postexe_iseq, RNODE_POSTEXE(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);
+            NEW_CHILD_ISEQ_WITH_CALLBACK(ifunc, rb_fstring(make_name_for_block(iseq)), ISEQ_TYPE_BLOCK, line);
 
         ADD_INSN2(ret, node, once, once_iseq, INT2FIX(is_index));
         RB_OBJ_WRITTEN(iseq, Qundef, (VALUE)once_iseq);
@@ -10043,7 +11574,7 @@ iseq_compile_each0(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const no
         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);
+        const rb_iseq_t *block = NEW_CHILD_ISEQ(RNODE_LAMBDA(node)->nd_body, make_name_for_block(iseq), ISEQ_TYPE_BLOCK, line);
         VALUE argc = INT2FIX(0);
 
         ADD_INSN1(ret, node, putspecialobject, INT2FIX(VM_SPECIAL_OBJECT_VMCORE));
@@ -10228,7 +11759,7 @@ dump_disasm_list_with_cursor(const LINK_ELEMENT *link, const LINK_ELEMENT *curr,
           case ISEQ_ELEMENT_LABEL:
             {
                 lobj = (LABEL *)link;
-                printf(LABEL_FORMAT" [sp: %d]%s\n", lobj->label_no, lobj->sp,
+                printf(LABEL_FORMAT" [sp: %d, unremovable: %d, refcnt: %d]%s\n", lobj->label_no, lobj->sp, lobj->unremovable, lobj->refcnt,
                        dest == lobj ? " <---" : "");
                 break;
             }
@@ -10246,7 +11777,7 @@ dump_disasm_list_with_cursor(const LINK_ELEMENT *link, const LINK_ELEMENT *curr,
             }
           default:
             /* ignore */
-            rb_raise(rb_eSyntaxError, "dump_disasm_list error: %ld\n", FIX2LONG(link->type));
+            rb_raise(rb_eSyntaxError, "dump_disasm_list error: %d\n", (int)link->type);
         }
         link = link->next;
     }
@@ -10254,6 +11785,12 @@ dump_disasm_list_with_cursor(const LINK_ELEMENT *link, const LINK_ELEMENT *curr,
     fflush(stdout);
 }
 
+int
+rb_insn_len(VALUE insn)
+{
+    return insn_len(insn);
+}
+
 const char *
 rb_insns_name(int i)
 {
@@ -10268,7 +11805,7 @@ rb_insns_name_array(void)
     for (i = 0; i < VM_INSTRUCTION_SIZE; i++) {
         rb_ary_push(ary, rb_fstring_cstr(insn_name(i)));
     }
-    return rb_obj_freeze(ary);
+    return rb_ary_freeze(ary);
 }
 
 static LABEL *
@@ -10417,6 +11954,7 @@ iseq_build_callinfo_from_hash(rb_iseq_t *iseq, VALUE op)
             size_t n = rb_callinfo_kwarg_bytes(len);
 
             kw_arg = xmalloc(n);
+            kw_arg->references = 0;
             kw_arg->keyword_len = len;
             for (i = 0; i < len; i++) {
                 VALUE kw = RARRAY_AREF(vkw_arg, i);
@@ -10442,6 +11980,7 @@ event_name_to_flag(VALUE sym)
                 CHECK_EVENT(RUBY_EVENT_RETURN);
                 CHECK_EVENT(RUBY_EVENT_B_CALL);
                 CHECK_EVENT(RUBY_EVENT_B_RETURN);
+                CHECK_EVENT(RUBY_EVENT_RESCUE);
 #undef CHECK_EVENT
     return RUBY_EVENT_NONE;
 }
@@ -10452,7 +11991,7 @@ iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *const anchor,
 {
     /* TODO: body should be frozen */
     long i, len = RARRAY_LEN(body);
-    struct st_table *labels_table = DATA_PTR(labels_wrapper);
+    struct st_table *labels_table = RTYPEDDATA_DATA(labels_wrapper);
     int j;
     int line_no = 0, node_id = -1, insn_idx = 0;
     int ret = COMPILE_OK;
@@ -10512,9 +12051,8 @@ iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *const anchor,
                 argv = compile_data_calloc2(iseq, sizeof(VALUE), argc);
 
                 // add element before operand setup to make GC root
-                NODE dummy_line_node = generate_dummy_line_node(line_no, node_id);
                 ADD_ELEM(anchor,
-                         (LINK_ELEMENT*)new_insn_core(iseq, &dummy_line_node,
+                         (LINK_ELEMENT*)new_insn_core(iseq, line_no, node_id,
                                                       (enum ruby_vminsn_type)insn_id, argc, argv));
 
                 for (j=0; j<argc; j++) {
@@ -10602,6 +12140,7 @@ iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *const anchor,
                                 rb_hash_aset(map, key, (VALUE)label | 1);
                             }
                             RB_GC_GUARD(op);
+                            RB_OBJ_SET_SHAREABLE(rb_obj_hide(map)); // allow mutation while compiling
                             argv[j] = map;
                             RB_OBJ_WRITTEN(iseq, Qundef, map);
                         }
@@ -10622,9 +12161,8 @@ iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *const anchor,
                 }
             }
             else {
-                NODE dummy_line_node = generate_dummy_line_node(line_no, node_id);
                 ADD_ELEM(anchor,
-                         (LINK_ELEMENT*)new_insn_core(iseq, &dummy_line_node,
+                         (LINK_ELEMENT*)new_insn_core(iseq, line_no, node_id,
                                                       (enum ruby_vminsn_type)insn_id, argc, NULL));
             }
         }
@@ -10632,7 +12170,8 @@ iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *const anchor,
             rb_raise(rb_eTypeError, "unexpected object for instruction");
         }
     }
-    DATA_PTR(labels_wrapper) = 0;
+    RTYPEDDATA_DATA(labels_wrapper) = 0;
+    RB_GC_GUARD(labels_wrapper);
     validate_labels(iseq, labels_table);
     if (!ret) return ret;
     return iseq_setup(iseq, anchor);
@@ -10716,7 +12255,7 @@ iseq_build_kw(rb_iseq_t *iseq, VALUE params, VALUE keywords)
             rb_raise(rb_eTypeError, "keyword default has unsupported len %+"PRIsVALUE, key);
         }
         ids[i] = SYM2ID(sym);
-        dvs[j] = default_val;
+        RB_OBJ_WRITE(iseq, &dvs[j], default_val);
     }
 
     keyword->table = ids;
@@ -10725,8 +12264,14 @@ iseq_build_kw(rb_iseq_t *iseq, VALUE params, VALUE keywords)
     return keyword;
 }
 
+static void
+iseq_insn_each_object_mark_and_move(VALUE * obj, VALUE _)
+{
+    rb_gc_mark_and_move(obj);
+}
+
 void
-rb_iseq_mark_insn_storage(struct iseq_compile_data_storage *storage)
+rb_iseq_mark_and_move_insn_storage(struct iseq_compile_data_storage *storage)
 {
     INSN *iobj = 0;
     size_t size = sizeof(INSN);
@@ -10751,35 +12296,22 @@ rb_iseq_mark_insn_storage(struct iseq_compile_data_storage *storage)
             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_IC: // constant path array
-                      case TS_CALLDATA: // ci is stored.
-                        {
-                            VALUE op = OPERAND_AT(iobj, j);
-
-                            if (!SPECIAL_CONST_P(op)) {
-                                rb_gc_mark(op);
-                            }
-                        }
-                        break;
-                      default:
-                        break;
-                    }
-                }
+                iseq_insn_each_markable_object(iobj, iseq_insn_each_object_mark_and_move, (VALUE)0);
             }
             pos += (int)size;
         }
     }
 }
 
+static const rb_data_type_t labels_wrapper_type = {
+    .wrap_struct_name = "compiler/labels_wrapper",
+    .function = {
+        .dmark = (RUBY_DATA_FUNC)rb_mark_set,
+        .dfree = (RUBY_DATA_FUNC)st_free_table,
+    },
+    .flags = RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_WB_PROTECTED,
+};
+
 void
 rb_iseq_build_from_ary(rb_iseq_t *iseq, VALUE misc, VALUE locals, VALUE params,
                          VALUE exception, VALUE body)
@@ -10789,7 +12321,7 @@ rb_iseq_build_from_ary(rb_iseq_t *iseq, VALUE misc, VALUE locals, VALUE params,
     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 labels_wrapper = TypedData_Wrap_Struct(0, &labels_wrapper_type, labels_table);
     VALUE arg_opt_labels = rb_hash_aref(params, SYM(opt));
     VALUE keywords = rb_hash_aref(params, SYM(keyword));
     VALUE sym_arg_rest = ID2SYM(rb_intern_const("#arg_rest"));
@@ -10871,6 +12403,10 @@ rb_iseq_build_from_ary(rb_iseq_t *iseq, VALUE misc, VALUE locals, VALUE params,
         ISEQ_BODY(iseq)->param.flags.ambiguous_param0 = TRUE;
     }
 
+    if (Qtrue == rb_hash_aref(params, SYM(use_block))) {
+        ISEQ_BODY(iseq)->param.flags.use_block = TRUE;
+    }
+
     if (int_param(&i, params, SYM(kwrest))) {
         struct rb_iseq_param_keyword *keyword = (struct rb_iseq_param_keyword *)ISEQ_BODY(iseq)->param.keyword;
         if (keyword == NULL) {
@@ -10946,28 +12482,38 @@ rb_local_defined(ID id, const rb_iseq_t *iseq)
 #define IBF_ISEQ_ENABLE_LOCAL_BUFFER 0
 #endif
 
-typedef unsigned int ibf_offset_t;
+typedef uint32_t ibf_offset_t;
 #define IBF_OFFSET(ptr) ((ibf_offset_t)(VALUE)(ptr))
 
 #define IBF_MAJOR_VERSION ISEQ_MAJOR_VERSION
 #ifdef RUBY_DEVEL
-#define IBF_DEVEL_VERSION 4
+#define IBF_DEVEL_VERSION 5
 #define IBF_MINOR_VERSION (ISEQ_MINOR_VERSION * 10000 + IBF_DEVEL_VERSION)
 #else
 #define IBF_MINOR_VERSION ISEQ_MINOR_VERSION
 #endif
 
+static const char IBF_ENDIAN_MARK =
+#ifdef WORDS_BIGENDIAN
+    'b'
+#else
+    'l'
+#endif
+    ;
+
 struct ibf_header {
     char magic[4]; /* YARB */
-    unsigned int major_version;
-    unsigned int minor_version;
-    unsigned int size;
-    unsigned int extra_size;
+    uint32_t major_version;
+    uint32_t minor_version;
+    uint32_t size;
+    uint32_t extra_size;
 
-    unsigned int iseq_list_size;
-    unsigned int global_object_list_size;
+    uint32_t iseq_list_size;
+    uint32_t global_object_list_size;
     ibf_offset_t iseq_list_offset;
     ibf_offset_t global_object_list_offset;
+    uint8_t endian;
+    uint8_t wordsize;           /* assume no 2048-bit CPU */
 };
 
 struct ibf_dump_buffer {
@@ -11002,7 +12548,7 @@ struct ibf_load {
 
 struct pinned_list {
     long size;
-    VALUE * buffer;
+    VALUE buffer[1];
 };
 
 static void
@@ -11017,25 +12563,14 @@ pinned_list_mark(void *ptr)
     }
 }
 
-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
+    {
+        pinned_list_mark,
+        RUBY_DEFAULT_FREE,
+        NULL, // No external memory to report,
+    },
+    0, 0, RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_EMBEDDABLE
 };
 
 static VALUE
@@ -11069,13 +12604,10 @@ pinned_list_store(VALUE list, long offset, VALUE 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));
+    size_t memsize = offsetof(struct pinned_list, buffer) + size * sizeof(VALUE);
+    VALUE obj_list = rb_data_typed_object_zalloc(0, memsize, &pinned_list_type);
+    struct pinned_list * ptr = RTYPEDDATA_GET_DATA(obj_list);
     ptr->size = size;
-
     return obj_list;
 }
 
@@ -11114,8 +12646,13 @@ 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);
+#if SIZEOF_LONG > SIZEOF_INT
+    /* ensure the resulting dump does not exceed UINT_MAX */
+    if (size >= UINT_MAX || pos + size >= UINT_MAX) {
+        rb_raise(rb_eRuntimeError, "dump size exceeds");
+    }
+#endif
     rb_str_cat(dump->current_buffer->str, (const char *)buff, size);
-    /* TODO: overflow check */
     return pos;
 }
 
@@ -11224,6 +12761,10 @@ ibf_load_id(const struct ibf_load *load, const ID id_index)
         return 0;
     }
     VALUE sym = ibf_load_object(load, id_index);
+    if (rb_integer_type_p(sym)) {
+        /* Load hidden local variables as indexes */
+        return NUM2ULONG(sym);
+    }
     return rb_sym2id(sym);
 }
 
@@ -11423,7 +12964,7 @@ ibf_dump_code(struct ibf_dump *dump, const rb_iseq_t *iseq)
             ibf_dump_write_small_value(dump, wv);
           skip_wv:;
         }
-        assert(insn_len(insn) == op_index+1);
+        RUBY_ASSERT(insn_len(insn) == op_index+1);
     }
 
     return offset;
@@ -11441,6 +12982,9 @@ ibf_load_code(const struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t bytecod
     struct rb_call_data *cd_entries = load_body->call_data;
     int ic_index = 0;
 
+    load_body->iseq_encoded = code;
+    load_body->iseq_size = 0;
+
     iseq_bits_t * mark_offset_bits;
 
     iseq_bits_t tmp[1] = {0};
@@ -11484,7 +13028,7 @@ ibf_load_code(const struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t bytecod
                     v = rb_hash_dup(v); // hash dumped as frozen
                     RHASH_TBL_RAW(v)->type = &cdhash_type;
                     rb_hash_rehash(v); // hash function changed
-                    freeze_hide_obj(v);
+                    RB_OBJ_SET_SHAREABLE(freeze_hide_obj(v));
 
                     // Overwrite the existing hash in the object list.  This
                     // is to keep the object alive during load time.
@@ -11530,7 +13074,17 @@ ibf_load_code(const struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t bytecod
                     code[code_index] = (VALUE)ic;
 
                     if (operand_type == TS_IVC) {
-                        vm_ic_attr_index_initialize(((IVC)code[code_index]), INVALID_SHAPE_ID);
+                        IVC cache = (IVC)ic;
+
+                        if (insn == BIN(setinstancevariable)) {
+                            ID iv_name = (ID)code[code_index - 1];
+                            cache->iv_set_name = iv_name;
+                        }
+                        else {
+                            cache->iv_set_name = 0;
+                        }
+
+                        vm_ic_attr_index_initialize(cache, INVALID_SHAPE_ID);
                     }
 
                 }
@@ -11562,7 +13116,6 @@ ibf_load_code(const struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t bytecod
         }
     }
 
-    load_body->iseq_encoded = code;
     load_body->iseq_size = code_index;
 
     if (ISEQ_MBITS_BUFLEN(load_body->iseq_size) == 1) {
@@ -11578,8 +13131,8 @@ ibf_load_code(const struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t bytecod
         }
     }
 
-    assert(code_index == iseq_size);
-    assert(reading_pos == bytecode_offset + bytecode_size);
+    RUBY_ASSERT(code_index == iseq_size);
+    RUBY_ASSERT(reading_pos == bytecode_offset + bytecode_size);
     return code;
 }
 
@@ -11640,19 +13193,17 @@ ibf_load_param_keyword(const struct ibf_load *load, ibf_offset_t param_keyword_o
 {
     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;
+        VALUE *dvs = dv_num ? IBF_R(kw->default_values, VALUE, dv_num) : NULL;
 
-        for (i=0; i<kw->num; i++) {
-            ids[i] = ibf_load_id(load, ids[i]);
-        }
+        int i;
         for (i=0; i<dv_num; i++) {
             dvs[i] = ibf_load_object(load, dvs[i]);
         }
 
-        kw->table = ids;
+        // Will be set once the local table is loaded.
+        kw->table = NULL;
+
         kw->default_values = dvs;
         return kw;
     }
@@ -11737,14 +13288,19 @@ ibf_dump_local_table(struct ibf_dump *dump, const rb_iseq_t *iseq)
     int i;
 
     for (i=0; i<size; i++) {
-        table[i] = ibf_dump_id(dump, body->local_table[i]);
+        VALUE v = ibf_dump_id(dump, body->local_table[i]);
+        if (v == 0) {
+            /* Dump hidden local variables as indexes, so load_from_binary will work with them */
+            v = ibf_dump_object(dump, ULONG2NUM(body->local_table[i]));
+        }
+        table[i] = v;
     }
 
     IBF_W_ALIGN(ID);
     return ibf_dump_write(dump, table, sizeof(ID) * size);
 }
 
-static ID *
+static const ID *
 ibf_load_local_table(const struct ibf_load *load, ibf_offset_t local_table_offset, int size)
 {
     if (size > 0) {
@@ -11754,7 +13310,14 @@ ibf_load_local_table(const struct ibf_load *load, ibf_offset_t local_table_offse
         for (i=0; i<size; i++) {
             table[i] = ibf_load_id(load, table[i]);
         }
-        return table;
+
+        if (size == 1 && table[0] == idERROR_INFO) {
+            xfree(table);
+            return rb_iseq_shared_exc_local_tbl;
+        }
+        else {
+            return table;
+        }
     }
     else {
         return NULL;
@@ -11762,6 +13325,28 @@ ibf_load_local_table(const struct ibf_load *load, ibf_offset_t local_table_offse
 }
 
 static ibf_offset_t
+ibf_dump_lvar_states(struct ibf_dump *dump, const rb_iseq_t *iseq)
+{
+    const struct rb_iseq_constant_body *const body = ISEQ_BODY(iseq);
+    const int size = body->local_table_size;
+    IBF_W_ALIGN(enum lvar_state);
+    return ibf_dump_write(dump, body->lvar_states, sizeof(enum lvar_state) * (body->lvar_states ? size : 0));
+}
+
+static enum lvar_state *
+ibf_load_lvar_states(const struct ibf_load *load, ibf_offset_t lvar_states_offset, int size, const ID *local_table)
+{
+    if (local_table == rb_iseq_shared_exc_local_tbl ||
+        size <= 0) {
+        return NULL;
+    }
+    else {
+        enum lvar_state *states = IBF_R(lvar_states_offset, enum lvar_state, size);
+        return states;
+    }
+}
+
+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(iseq)->catch_table;
@@ -11791,12 +13376,13 @@ ibf_dump_catch_table(struct ibf_dump *dump, const rb_iseq_t *iseq)
     }
 }
 
-static struct iseq_catch_table *
-ibf_load_catch_table(const struct ibf_load *load, ibf_offset_t catch_table_offset, unsigned int size)
+static void
+ibf_load_catch_table(const struct ibf_load *load, ibf_offset_t catch_table_offset, unsigned int size, const rb_iseq_t *parent_iseq)
 {
     if (size) {
-        struct iseq_catch_table *table = ruby_xmalloc(iseq_catch_table_bytes(size));
+        struct iseq_catch_table *table = ruby_xcalloc(1, iseq_catch_table_bytes(size));
         table->size = size;
+        ISEQ_BODY(parent_iseq)->catch_table = table;
 
         ibf_offset_t reading_pos = catch_table_offset;
 
@@ -11809,12 +13395,12 @@ ibf_load_catch_table(const struct ibf_load *load, ibf_offset_t catch_table_offse
             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);
+            rb_iseq_t *catch_iseq = (rb_iseq_t *)ibf_load_iseq(load, (const rb_iseq_t *)(VALUE)iseq_index);
+            RB_OBJ_WRITE(parent_iseq, UNALIGNED_MEMBER_PTR(&table->entries[i], iseq), catch_iseq);
         }
-        return table;
     }
     else {
-        return NULL;
+        ISEQ_BODY(parent_iseq)->catch_table = NULL;
     }
 }
 
@@ -11858,15 +13444,44 @@ ibf_dump_ci_entries(struct ibf_dump *dump, const rb_iseq_t *iseq)
     return offset;
 }
 
+struct outer_variable_pair {
+    ID id;
+    VALUE name;
+    VALUE val;
+};
+
+struct outer_variable_list {
+    size_t num;
+    struct outer_variable_pair pairs[1];
+};
+
 static enum rb_id_table_iterator_result
-dump_outer_variable(ID id, VALUE val, void *dump)
+store_outer_variable(ID id, VALUE val, void *dump)
 {
-    ibf_dump_write_small_value(dump, ibf_dump_id(dump, id));
-    ibf_dump_write_small_value(dump, val);
-
+    struct outer_variable_list *ovlist = dump;
+    struct outer_variable_pair *pair = &ovlist->pairs[ovlist->num++];
+    pair->id = id;
+    pair->name = rb_id2str(id);
+    pair->val = val;
     return ID_TABLE_CONTINUE;
 }
 
+static int
+outer_variable_cmp(const void *a, const void *b, void *arg)
+{
+    const struct outer_variable_pair *ap = (const struct outer_variable_pair *)a;
+    const struct outer_variable_pair *bp = (const struct outer_variable_pair *)b;
+
+    if (!ap->name) {
+        return -1;
+    }
+    else if (!bp->name) {
+        return 1;
+    }
+
+    return rb_str_cmp(ap->name, bp->name);
+}
+
 static ibf_offset_t
 ibf_dump_outer_variables(struct ibf_dump *dump, const rb_iseq_t *iseq)
 {
@@ -11874,12 +13489,24 @@ ibf_dump_outer_variables(struct ibf_dump *dump, const rb_iseq_t *iseq)
 
     ibf_offset_t offset = ibf_dump_pos(dump);
 
-    if (ovs) {
-        ibf_dump_write_small_value(dump, (VALUE)rb_id_table_size(ovs));
-        rb_id_table_foreach(ovs, dump_outer_variable, (void *)dump);
-    }
-    else {
-        ibf_dump_write_small_value(dump, (VALUE)0);
+    size_t size = ovs ? rb_id_table_size(ovs) : 0;
+    ibf_dump_write_small_value(dump, (VALUE)size);
+    if (size > 0) {
+        VALUE buff;
+        size_t buffsize =
+            rb_size_mul_add_or_raise(sizeof(struct outer_variable_pair), size,
+                                     offsetof(struct outer_variable_list, pairs),
+                                     rb_eArgError);
+        struct outer_variable_list *ovlist = RB_ALLOCV(buff, buffsize);
+        ovlist->num = 0;
+        rb_id_table_foreach(ovs, store_outer_variable, ovlist);
+        ruby_qsort(ovlist->pairs, size, sizeof(struct outer_variable_pair), outer_variable_cmp, NULL);
+        for (size_t i = 0; i < size; ++i) {
+            ID id = ovlist->pairs[i].id;
+            ID val = ovlist->pairs[i].val;
+            ibf_dump_write_small_value(dump, ibf_dump_id(dump, id));
+            ibf_dump_write_small_value(dump, val);
+        }
     }
 
     return offset;
@@ -11892,6 +13519,11 @@ ibf_load_ci_entries(const struct ibf_load *load,
                     unsigned int ci_size,
                     struct rb_call_data **cd_ptr)
 {
+    if (!ci_size) {
+        *cd_ptr = NULL;
+        return;
+    }
+
     ibf_offset_t reading_pos = ci_entries_offset;
 
     unsigned int i;
@@ -11910,6 +13542,7 @@ ibf_load_ci_entries(const struct ibf_load *load,
             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->references = 0;
                 kwarg->keyword_len = kwlen;
                 for (int j=0; j<kwlen; j++) {
                     VALUE keyword = ibf_load_small_value(load, &reading_pos);
@@ -11955,7 +13588,7 @@ ibf_load_outer_variables(const struct ibf_load * load, ibf_offset_t outer_variab
 static ibf_offset_t
 ibf_dump_iseq_each(struct ibf_dump *dump, const rb_iseq_t *iseq)
 {
-    assert(dump->current_buffer == &dump->global_buffer);
+    RUBY_ASSERT(dump->current_buffer == &dump->global_buffer);
 
     unsigned int *positions;
 
@@ -11986,6 +13619,7 @@ ibf_dump_iseq_each(struct ibf_dump *dump, const rb_iseq_t *iseq)
     ruby_xfree(positions);
 
     const ibf_offset_t local_table_offset = ibf_dump_local_table(dump, iseq);
+    const ibf_offset_t lvar_states_offset = ibf_dump_lvar_states(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(iseq)->parent_iseq);
@@ -12014,7 +13648,11 @@ ibf_dump_iseq_each(struct ibf_dump *dump, const rb_iseq_t *iseq)
         (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);
+        (body->param.flags.ruby2_keywords   << 9) |
+        (body->param.flags.anon_rest        << 10) |
+        (body->param.flags.anon_kwrest      << 11) |
+        (body->param.flags.use_block        << 12) |
+        (body->param.flags.forwardable      << 13) ;
 
 #if IBF_ISEQ_ENABLE_LOCAL_BUFFER
 #  define IBF_BODY_OFFSET(x) (x)
@@ -12049,6 +13687,7 @@ ibf_dump_iseq_each(struct ibf_dump *dump, const rb_iseq_t *iseq)
     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, IBF_BODY_OFFSET(lvar_states_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);
@@ -12064,8 +13703,8 @@ ibf_dump_iseq_each(struct ibf_dump *dump, const rb_iseq_t *iseq)
     ibf_dump_write_small_value(dump, body->ic_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);
+    ibf_dump_write_small_value(dump, body->builtin_attrs);
+    ibf_dump_write_small_value(dump, body->prism ? 1 : 0);
 
 #undef IBF_BODY_OFFSET
 
@@ -12160,6 +13799,7 @@ ibf_load_iseq_each(struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t offset)
     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 ibf_offset_t lvar_states_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);
@@ -12177,8 +13817,8 @@ ibf_load_iseq_each(struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t offset)
 
     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);
+    const unsigned int builtin_attrs = (unsigned int)ibf_load_small_value(load, &reading_pos);
+    const bool prism = (bool)ibf_load_small_value(load, &reading_pos);
 
     // setup fname and dummy frame
     VALUE path = ibf_load_object(load, location_pathobj_index);
@@ -12228,6 +13868,10 @@ ibf_load_iseq_each(struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t offset)
     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.flags.anon_rest = (param_flags >> 10) & 1;
+    load_body->param.flags.anon_kwrest = (param_flags >> 11) & 1;
+    load_body->param.flags.use_block = (param_flags >> 12) & 1;
+    load_body->param.flags.forwardable = (param_flags >> 13) & 1;
     load_body->param.size = param_size;
     load_body->param.lead_num = param_lead_num;
     load_body->param.opt_num = param_opt_num;
@@ -12250,14 +13894,20 @@ ibf_load_iseq_each(struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t offset)
     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->builtin_attrs = builtin_attrs;
+    load_body->prism = prism;
 
     load_body->ivc_size             = ivc_size;
     load_body->icvarc_size          = icvarc_size;
     load_body->ise_size             = ise_size;
     load_body->ic_size              = ic_size;
-    load_body->is_entries           = ZALLOC_N(union iseq_inline_storage_entry, ISEQ_IS_SIZE(load_body));
+
+    if (ISEQ_IS_SIZE(load_body)) {
+        load_body->is_entries       = ZALLOC_N(union iseq_inline_storage_entry, ISEQ_IS_SIZE(load_body));
+    }
+    else {
+        load_body->is_entries       = NULL;
+    }
                                       ibf_load_ci_entries(load, ci_entries_offset, ci_size, &load_body->call_data);
     load_body->outer_variables      = ibf_load_outer_variables(load, outer_variables_offset);
     load_body->param.opt_table      = ibf_load_param_opt_table(load, param_opt_table_offset, param_opt_num);
@@ -12266,10 +13916,23 @@ ibf_load_iseq_each(struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t offset)
     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);
-    load_body->mandatory_only_iseq  = ibf_load_iseq(load, (const rb_iseq_t *)(VALUE)mandatory_only_iseq_index);
+    load_body->lvar_states          = ibf_load_lvar_states(load, lvar_states_offset, local_table_size, load_body->local_table);
+    ibf_load_catch_table(load, catch_table_offset, catch_table_size, iseq);
+
+    const rb_iseq_t *parent_iseq = ibf_load_iseq(load, (const rb_iseq_t *)(VALUE)parent_iseq_index);
+    const rb_iseq_t *local_iseq = ibf_load_iseq(load, (const rb_iseq_t *)(VALUE)local_iseq_index);
+    const rb_iseq_t *mandatory_only_iseq = ibf_load_iseq(load, (const rb_iseq_t *)(VALUE)mandatory_only_iseq_index);
+
+    RB_OBJ_WRITE(iseq, &load_body->parent_iseq, parent_iseq);
+    RB_OBJ_WRITE(iseq, &load_body->local_iseq, local_iseq);
+    RB_OBJ_WRITE(iseq, &load_body->mandatory_only_iseq, mandatory_only_iseq);
+
+    // This must be done after the local table is loaded.
+    if (load_body->param.keyword != NULL) {
+        RUBY_ASSERT(load_body->local_table);
+        struct rb_iseq_param_keyword *keyword = (struct rb_iseq_param_keyword *) load_body->param.keyword;
+        keyword->table = &load_body->local_table[keyword->bits_start - keyword->num];
+    }
 
     ibf_load_code(load, iseq, bytecode_offset, bytecode_size, iseq_size);
 #if VM_INSN_INFO_TABLE_IMPL == 2
@@ -12291,7 +13954,7 @@ ibf_load_iseq_each(struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t offset)
     verify_call_cache(iseq);
 
     RB_GC_GUARD(dummy_frame);
-    rb_vm_pop_frame(ec);
+    rb_vm_pop_frame_no_int(ec);
 }
 
 struct ibf_dump_iseq_list_arg
@@ -12336,8 +13999,6 @@ ibf_dump_iseq_list(struct ibf_dump *dump, struct ibf_header *header)
     header->iseq_list_size = (unsigned int)size;
 }
 
-#define IBF_OBJECT_INTERNAL FL_PROMOTED0
-
 /*
  * Binary format
  * - ibf_object_header
@@ -12397,7 +14058,11 @@ struct ibf_object_symbol {
 
 #define IBF_ALIGNED_OFFSET(align, offset) /* offset > 0 */ \
     ((((offset) - 1) / (align) + 1) * (align))
-#define IBF_OBJBODY(type, offset) (const type *)\
+/* No cast, since it's UB to create an unaligned pointer.
+ * Leave as void* for use with memcpy in those cases.
+ * We align the offset, but the buffer pointer is only VALUE aligned,
+ * so the returned pointer may be unaligned for `type` .*/
+#define IBF_OBJBODY(type, offset) \
     ibf_load_check_offset(load, IBF_ALIGNED_OFFSET(RUBY_ALIGNOF(type), offset))
 
 static const void *
@@ -12492,8 +14157,12 @@ ibf_dump_object_float(struct ibf_dump *dump, VALUE obj)
 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);
+    double d;
+    /* Avoid unaligned VFP load on ARMv7; IBF payload may be unaligned (C99 6.3.2.3 p7). */
+    memcpy(&d, IBF_OBJBODY(double, offset), sizeof(d));
+    VALUE f = DBL2NUM(d);
+    if (!FLONUM_P(f)) RB_OBJ_SET_SHAREABLE(f);
+    return f;
 }
 
 static void
@@ -12530,7 +14199,7 @@ ibf_load_object_string(const struct ibf_load *load, const struct ibf_object_head
 
     VALUE str;
     if (header->frozen && !header->internal) {
-        str = rb_enc_interned_str(ptr, len, rb_enc_from_index(encindex));
+        str = rb_enc_literal_str(ptr, len, rb_enc_from_index(encindex));
     }
     else {
         str = rb_enc_str_new(ptr, len, rb_enc_from_index(encindex));
@@ -12564,7 +14233,7 @@ ibf_load_object_regexp(const struct ibf_load *load, const struct ibf_object_head
     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);
+    if (header->frozen) RB_OBJ_SET_SHAREABLE(rb_obj_freeze(reg));
 
     return reg;
 }
@@ -12595,7 +14264,10 @@ ibf_load_object_array(const struct ibf_load *load, const struct ibf_object_heade
         rb_ary_push(ary, ibf_load_object(load, index));
     }
 
-    if (header->frozen) rb_obj_freeze(ary);
+    if (header->frozen) {
+        rb_ary_freeze(ary);
+        rb_ractor_make_shareable(ary); // TODO: check elements
+    }
 
     return ary;
 }
@@ -12640,7 +14312,9 @@ ibf_load_object_hash(const struct ibf_load *load, const struct ibf_object_header
     rb_hash_rehash(obj);
 
     if (header->internal) rb_obj_hide(obj);
-    if (header->frozen)   rb_obj_freeze(obj);
+    if (header->frozen) {
+        RB_OBJ_SET_FROZEN_SHAREABLE(obj);
+    }
 
     return obj;
 }
@@ -12676,7 +14350,7 @@ ibf_load_object_struct(const struct ibf_load *load, const struct ibf_object_head
     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);
+    if (header->frozen)   RB_OBJ_SET_FROZEN_SHAREABLE(obj);
     return obj;
 }
 
@@ -12697,10 +14371,14 @@ ibf_load_object_bignum(const struct ibf_load *load, const struct ibf_object_head
     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));
+    const int big_unpack_flags = /* c.f. rb_big_unpack() */
+        INTEGER_PACK_LSWORD_FIRST |
+        INTEGER_PACK_NATIVE_BYTE_ORDER;
+    VALUE obj = rb_integer_unpack(bignum->digits, len, sizeof(BDIGIT), 0,
+                                  big_unpack_flags |
+                                  (sign == 0 ? INTEGER_PACK_NEGATIVE : 0));
     if (header->internal) rb_obj_hide(obj);
-    if (header->frozen)   rb_obj_freeze(obj);
+    if (header->frozen)   RB_OBJ_SET_FROZEN_SHAREABLE(obj);
     return obj;
 }
 
@@ -12761,7 +14439,7 @@ ibf_load_object_complex_rational(const struct ibf_load *load, const struct ibf_o
       rb_complex_new(a, b) : rb_rational_new(a, b);
 
     if (header->internal) rb_obj_hide(obj);
-    if (header->frozen)   rb_obj_freeze(obj);
+    if (header->frozen) rb_ractor_make_shareable(rb_obj_freeze(obj));
     return obj;
 }
 
@@ -12790,7 +14468,7 @@ ibf_load_object_symbol(const struct ibf_load *load, const struct ibf_object_head
 }
 
 typedef void (*ibf_dump_object_function)(struct ibf_dump *dump, VALUE obj);
-static ibf_dump_object_function dump_object_functions[RUBY_T_MASK+1] = {
+static const 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 */
@@ -12874,7 +14552,7 @@ ibf_dump_object_object(struct ibf_dump *dump, VALUE 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;
+        obj_header.frozen = OBJ_FROZEN(obj) ? TRUE : FALSE;
         ibf_dump_object_object_header(dump, obj_header);
         (*dump_object_functions[obj_header.type])(dump, obj);
     }
@@ -12883,7 +14561,7 @@ ibf_dump_object_object(struct ibf_dump *dump, VALUE obj)
 }
 
 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] = {
+static const 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 */
@@ -13026,14 +14704,13 @@ ibf_dump_free(void *ptr)
         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);
+    size_t size = 0;
     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;
@@ -13042,7 +14719,7 @@ ibf_dump_memsize(const void *ptr)
 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
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_EMBEDDABLE
 };
 
 static void
@@ -13078,7 +14755,6 @@ rb_iseq_ibf_dump(const rb_iseq_t *iseq, VALUE opt)
     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 */
@@ -13087,6 +14763,8 @@ rb_iseq_ibf_dump(const rb_iseq_t *iseq, VALUE opt)
     header.magic[3] = 'B';
     header.major_version = IBF_MAJOR_VERSION;
     header.minor_version = IBF_MINOR_VERSION;
+    header.endian = IBF_ENDIAN_MARK;
+    header.wordsize = (uint8_t)SIZEOF_VALUE;
     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);
@@ -13104,8 +14782,6 @@ rb_iseq_ibf_dump(const rb_iseq_t *iseq, VALUE opt)
     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;
 }
@@ -13136,7 +14812,7 @@ rb_ibf_load_iseq_complete(rb_iseq_t *iseq)
 }
 
 #if USE_LAZY_LOAD
-MJIT_FUNC_EXPORTED const rb_iseq_t *
+const rb_iseq_t *
 rb_iseq_complete(const rb_iseq_t *iseq)
 {
     rb_ibf_load_iseq_complete((rb_iseq_t *)iseq);
@@ -13179,16 +14855,12 @@ ibf_load_iseq(const struct ibf_load *load, const rb_iseq_t *index_iseq)
 #endif
             pinned_list_store(load->iseq_list, iseq_index, (VALUE)iseq);
 
-#if !USE_LAZY_LOAD
+            if (!USE_LAZY_LOAD || GET_VM()->builtin_function_table) {
 #if IBF_ISEQ_DEBUG
-            fprintf(stderr, "ibf_load_iseq: loading iseq=%p\n", (void *)iseq);
+                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",
@@ -13202,35 +14874,39 @@ ibf_load_iseq(const struct ibf_load *load, const rb_iseq_t *index_iseq)
 static void
 ibf_load_setup_bytes(struct ibf_load *load, VALUE loader_obj, const char *bytes, size_t size)
 {
+    struct ibf_header *header = (struct ibf_header *)bytes;
     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));
+    load->header = header;
+    load->global_buffer.size = header->size;
+    load->global_buffer.obj_list_offset = header->global_object_list_offset;
+    load->global_buffer.obj_list_size = header->global_object_list_size;
+    RB_OBJ_WRITE(loader_obj, &load->iseq_list, pinned_list_new(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) {
+    if (size < header->size) {
         rb_raise(rb_eRuntimeError, "broken binary format");
     }
-    if (strncmp(load->header->magic, "YARB", 4) != 0) {
+    if (strncmp(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) {
+    if (header->major_version != IBF_MAJOR_VERSION ||
+        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);
+                 header->major_version, 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 (header->endian != IBF_ENDIAN_MARK) {
+        rb_raise(rb_eRuntimeError, "unmatched endian: %c", header->endian);
     }
-    if (load->header->iseq_list_offset % RUBY_ALIGNOF(ibf_offset_t)) {
+    if (header->wordsize != SIZEOF_VALUE) {
+        rb_raise(rb_eRuntimeError, "unmatched word size: %d", header->wordsize);
+    }
+    if (header->iseq_list_offset % RUBY_ALIGNOF(ibf_offset_t)) {
         rb_raise(rb_eArgError, "unaligned iseq list offset: %u",
-                 load->header->iseq_list_offset);
+                 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",
@@ -13241,15 +14917,17 @@ ibf_load_setup_bytes(struct ibf_load *load, VALUE loader_obj, const char *bytes,
 static void
 ibf_load_setup(struct ibf_load *load, VALUE loader_obj, VALUE str)
 {
+    StringValue(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
+    if (USE_LAZY_LOAD) {
+        str = rb_str_new(RSTRING_PTR(str), RSTRING_LEN(str));
+    }
 
-    ibf_load_setup_bytes(load, loader_obj, StringValuePtr(str), RSTRING_LEN(str));
+    ibf_load_setup_bytes(load, loader_obj, RSTRING_PTR(str), RSTRING_LEN(str));
     RB_OBJ_WRITE(loader_obj, &load->str, str);
 }
 
@@ -13321,3 +14999,5 @@ rb_iseq_ibf_load_extra_data(VALUE str)
     RB_GC_GUARD(loader_obj);
     return extra_str;
 }
+
+#include "prism_compile.c"
diff --git a/complex.c b/complex.c
index d927f62d55..85d724f273 100644
--- a/complex.c
+++ b/complex.c
@@ -24,6 +24,7 @@
 #include "internal/numeric.h"
 #include "internal/object.h"
 #include "internal/rational.h"
+#include "internal/string.h"
 #include "ruby_assert.h"
 
 #define ZERO INT2FIX(0)
@@ -391,11 +392,12 @@ k_numeric_p(VALUE x)
 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));
+    NEWOBJ_OF(obj, struct RComplex, klass,
+            T_COMPLEX | (RGENGC_WB_PROTECTED_COMPLEX ? FL_WB_PROTECTED : 0), sizeof(struct RComplex), 0);
 
     RCOMPLEX_SET_REAL(obj, real);
     RCOMPLEX_SET_IMAG(obj, imag);
-    OBJ_FREEZE_RAW((VALUE)obj);
+    OBJ_FREEZE((VALUE)obj);
 
     return (VALUE)obj;
 }
@@ -409,15 +411,15 @@ nucomp_s_alloc(VALUE klass)
 inline static VALUE
 f_complex_new_bang1(VALUE klass, VALUE x)
 {
-    assert(!RB_TYPE_P(x, T_COMPLEX));
+    RUBY_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));
+    RUBY_ASSERT(!RB_TYPE_P(x, T_COMPLEX));
+    RUBY_ASSERT(!RB_TYPE_P(y, T_COMPLEX));
     return nucomp_s_new_internal(klass, x, y);
 }
 
@@ -430,7 +432,7 @@ nucomp_real_check(VALUE num)
         !RB_TYPE_P(num, T_RATIONAL)) {
         if (RB_TYPE_P(num, T_COMPLEX) && nucomp_real_p(num)) {
             VALUE real = RCOMPLEX(num)->real;
-            assert(!RB_TYPE_P(real, T_COMPLEX));
+            RUBY_ASSERT(!RB_TYPE_P(real, T_COMPLEX));
             return real;
         }
         if (!k_numeric_p(num) || !f_real_p(num))
@@ -473,12 +475,19 @@ nucomp_s_canonicalize_internal(VALUE klass, VALUE real, VALUE imag)
 
 /*
  * call-seq:
- *    Complex.rect(real[, imag])         ->  complex
- *    Complex.rectangular(real[, imag])  ->  complex
+ *   Complex.rect(real, imag = 0) -> complex
  *
- * Returns a complex object which denotes the given rectangular form.
+ * Returns a new \Complex object formed from the arguments,
+ * each of which must be an instance of Numeric,
+ * or an instance of one of its subclasses:
+ * \Complex, Float, Integer, Rational;
+ * see {Rectangular Coordinates}[rdoc-ref:Complex@Rectangular+Coordinates]:
  *
- *    Complex.rectangular(1, 2)  #=> (1+2i)
+ *   Complex.rect(3)             # => (3+0i)
+ *   Complex.rect(3, Math::PI)   # => (3+3.141592653589793i)
+ *   Complex.rect(-3, -Math::PI) # => (-3-3.141592653589793i)
+ *
+ * \Complex.rectangular is an alias for \Complex.rect.
  */
 static VALUE
 nucomp_s_new(int argc, VALUE *argv, VALUE klass)
@@ -515,39 +524,54 @@ 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.
+ *   Complex(real, imag = 0, exception: true) -> complex or nil
+ *   Complex(s, exception: true) -> complex or nil
+ *
+ * Returns a new \Complex object if the arguments are valid;
+ * otherwise raises an exception if +exception+ is +true+;
+ * otherwise returns +nil+.
+ *
+ * With Numeric arguments +real+ and +imag+,
+ * returns <tt>Complex.rect(real, imag)</tt> if the arguments are valid.
+ *
+ * With string argument +s+, returns a new \Complex object if the argument is valid;
+ * the string may have:
+ *
+ * - One or two numeric substrings,
+ *   each of which specifies a Complex, Float, Integer, Numeric, or Rational value,
+ *   specifying {rectangular coordinates}[rdoc-ref:Complex@Rectangular+Coordinates]:
+ *
+ *   - Sign-separated real and imaginary numeric substrings
+ *     (with trailing character <tt>'i'</tt>):
+ *
+ *       Complex('1+2i')  # => (1+2i)
+ *       Complex('+1+2i') # => (1+2i)
+ *       Complex('+1-2i') # => (1-2i)
+ *       Complex('-1+2i') # => (-1+2i)
+ *       Complex('-1-2i') # => (-1-2i)
+ *
+ *   - Real-only numeric string (without trailing character <tt>'i'</tt>):
+ *
+ *       Complex('1')  # => (1+0i)
+ *       Complex('+1') # => (1+0i)
+ *       Complex('-1') # => (-1+0i)
+ *
+ *   - Imaginary-only numeric string (with trailing character <tt>'i'</tt>):
+ *
+ *       Complex('1i')  # => (0+1i)
+ *       Complex('+1i') # => (0+1i)
+ *       Complex('-1i') # => (0-1i)
+ *
+ * - At-sign separated real and imaginary rational substrings,
+ *   each of which specifies a Rational value,
+ *   specifying {polar coordinates}[rdoc-ref:Complex@Polar+Coordinates]:
+ *
+ *     Complex('1/2@3/4')   # => (0.36584443443691045+0.34081938001166706i)
+ *     Complex('+1/2@+3/4') # => (0.36584443443691045+0.34081938001166706i)
+ *     Complex('+1/2@-3/4') # => (0.36584443443691045-0.34081938001166706i)
+ *     Complex('-1/2@+3/4') # => (-0.36584443443691045-0.34081938001166706i)
+ *     Complex('-1/2@-3/4') # => (-0.36584443443691045+0.34081938001166706i)
+ *
  */
 static VALUE
 nucomp_f_complex(int argc, VALUE *argv, VALUE klass)
@@ -561,7 +585,7 @@ nucomp_f_complex(int argc, VALUE *argv, VALUE klass)
     if (!NIL_P(opts)) {
         raise = rb_opts_exception_p(opts, raise);
     }
-    if (argc > 0 && CLASS_OF(a1) == rb_cComplex && a2 == Qundef) {
+    if (argc > 0 && CLASS_OF(a1) == rb_cComplex && UNDEF_P(a2)) {
         return a1;
     }
     return nucomp_convert(rb_cComplex, a1, a2, raise);
@@ -697,14 +721,19 @@ rb_dbl_complex_new_polar_pi(double abs, double ang)
 
 /*
  * call-seq:
- *    Complex.polar(abs[, arg])  ->  complex
+ *   Complex.polar(abs, arg = 0) -> complex
+ *
+ * Returns a new \Complex object formed from the arguments,
+ * each of which must be an instance of Numeric,
+ * or an instance of one of its subclasses:
+ * \Complex, Float, Integer, Rational.
+ * Argument +arg+ is given in radians;
+ * see {Polar Coordinates}[rdoc-ref:Complex@Polar+Coordinates]:
  *
- * Returns a complex object which denotes the given polar form.
+ *   Complex.polar(3)        # => (3+0i)
+ *   Complex.polar(3, 2.0)   # => (-1.2484405096414273+2.727892280477045i)
+ *   Complex.polar(-3, -2.0) # => (1.2484405096414273+2.727892280477045i)
  *
- *    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)
@@ -724,12 +753,19 @@ nucomp_s_polar(int argc, VALUE *argv, VALUE klass)
 
 /*
  * call-seq:
- *    cmp.real  ->  real
+ *   real -> numeric
+ *
+ * Returns the real value for +self+:
  *
- * Returns the real part.
+ *   Complex.rect(7).real     # => 7
+ *   Complex.rect(9, -4).real # => 9
+ *
+ * If +self+ was created with
+ * {polar coordinates}[rdoc-ref:Complex@Polar+Coordinates], the returned value
+ * is computed, and may be inexact:
+ *
+ *   Complex.polar(1, Math::PI/4).real # => 0.7071067811865476 # Square root of 2.
  *
- *    Complex(7).real      #=> 7
- *    Complex(9, -4).real  #=> 9
  */
 VALUE
 rb_complex_real(VALUE self)
@@ -740,13 +776,19 @@ rb_complex_real(VALUE self)
 
 /*
  * call-seq:
- *    cmp.imag       ->  real
- *    cmp.imaginary  ->  real
+ *   imag -> numeric
+ *
+ * Returns the imaginary value for +self+:
+ *
+ *   Complex.rect(7).imag     # => 0
+ *   Complex.rect(9, -4).imag # => -4
+ *
+ * If +self+ was created with
+ * {polar coordinates}[rdoc-ref:Complex@Polar+Coordinates], the returned value
+ * is computed, and may be inexact:
  *
- * Returns the imaginary part.
+ *   Complex.polar(1, Math::PI/4).imag # => 0.7071067811865476 # Square root of 2.
  *
- *    Complex(7).imaginary      #=> 0
- *    Complex(9, -4).imaginary  #=> -4
  */
 VALUE
 rb_complex_imag(VALUE self)
@@ -757,11 +799,13 @@ rb_complex_imag(VALUE self)
 
 /*
  * call-seq:
- *    -cmp  ->  complex
+ *   -self -> complex
  *
- * Returns negation of the value.
+ * Returns +self+, negated, which is the negation of each of its parts:
+ *
+ *   -Complex.rect(1, 2)   # => (-1-2i)
+ *   -Complex.rect(-1, -2) # => (1+2i)
  *
- *    -Complex(1, 2)  #=> (-1-2i)
  */
 VALUE
 rb_complex_uminus(VALUE self)
@@ -772,16 +816,26 @@ rb_complex_uminus(VALUE self)
 }
 
 /*
- * call-seq:
- *    cmp + numeric  ->  complex
+ *  call-seq:
+ *    self + other -> numeric
+ *
+ *  Returns the sum of +self+ and +other+:
+ *
+ *    Complex(1, 2) + 0  # => (1+2i)
+ *    Complex(1, 2) + 1  # => (2+2i)
+ *    Complex(1, 2) + -1 # => (0+2i)
+ *
+ *    Complex(1, 2) + 1.0  # => (2.0+2i)
+ *
+ *    Complex(1, 2) + Complex(2, 1)     # => (3+3i)
+ *    Complex(1, 2) + Complex(2.0, 1.0) # => (3.0+3.0i)
  *
- * Performs addition.
+ *    Complex(1, 2) + Rational(1, 1) # => ((2/1)+2i)
+ *    Complex(1, 2) + Rational(1, 2) # => ((3/2)+2i)
  *
- *    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)
+ *  For a computation involving Floats, the result may be inexact (see Float#+):
+ *
+ *    Complex(1, 2) + 3.14 # => (4.140000000000001+2i)
  */
 VALUE
 rb_complex_plus(VALUE self, VALUE other)
@@ -807,15 +861,16 @@ rb_complex_plus(VALUE self, VALUE other)
 
 /*
  * call-seq:
- *    cmp - numeric  ->  complex
+ *   self - other -> complex
+ *
+ * Returns the difference of +self+ and +other+:
  *
- * Performs subtraction.
+ *   Complex.rect(2, 3)  - Complex.rect(2, 3)  # => (0+0i)
+ *   Complex.rect(900)   - Complex.rect(1)     # => (899+0i)
+ *   Complex.rect(-2, 9) - Complex.rect(-9, 2) # => (7+7i)
+ *   Complex.rect(9, 8)  - 4                   # => (5+8i)
+ *   Complex.rect(20, 9) - 9.8                 # => (10.2+9i)
  *
- *    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)
@@ -867,15 +922,17 @@ comp_mul(VALUE areal, VALUE aimag, VALUE breal, VALUE bimag, VALUE *real, VALUE
 
 /*
  * call-seq:
- *    cmp * numeric  ->  complex
+ *   self * other -> numeric
+ *
+ * Returns the numeric product of +self+ and +other+:
  *
- * Performs multiplication.
+ *   Complex.rect(9, 8)  * 4                   # => (36+32i)
+ *   Complex.rect(20, 9) * 9.8                 # => (196.0+88.2i)
+ *   Complex.rect(2, 3)  * Complex.rect(2, 3)  # => (-5+12i)
+ *   Complex.rect(900)   * Complex.rect(1)     # => (900+0i)
+ *   Complex.rect(-2, 9) * Complex.rect(-9, 2) # => (0-85i)
+ *   Complex.rect(9, 8)  * Rational(2, 3)      # => ((6/1)+(16/3)*i)
  *
- *    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)
@@ -942,16 +999,16 @@ f_divide(VALUE self, VALUE other,
 
 /*
  * call-seq:
- *    cmp / numeric     ->  complex
- *    cmp.quo(numeric)  ->  complex
+ *   self / other -> complex
  *
- * Performs division.
+ * Returns the quotient of +self+ and +other+:
+ *
+ *   Complex.rect(2, 3)  / Complex.rect(2, 3)  # => (1+0i)
+ *   Complex.rect(900)   / Complex.rect(1)     # => (900+0i)
+ *   Complex.rect(-2, 9) / Complex.rect(-9, 2) # => ((36/85)-(77/85)*i)
+ *   Complex.rect(9, 8)  / 4                   # => ((9/4)+2i)
+ *   Complex.rect(20, 9) / 9.8                 # => (2.0408163265306123+0.9183673469387754i)
  *
- *    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)
@@ -963,11 +1020,12 @@ rb_complex_div(VALUE self, VALUE other)
 
 /*
  * call-seq:
- *    cmp.fdiv(numeric)  ->  complex
+ *   fdiv(numeric) -> new_complex
+ *
+ * Returns <tt>Complex.rect(self.real/numeric, self.imag/numeric)</tt>:
  *
- * Performs division as each part is a float, never returns a float.
+ *   Complex.rect(11, 22).fdiv(3) # => (3.6666666666666665+7.333333333333333i)
  *
- *    Complex(11, 22).fdiv(3)  #=> (3.6666666666666665+7.333333333333333i)
  */
 static VALUE
 nucomp_fdiv(VALUE self, VALUE other)
@@ -981,14 +1039,96 @@ f_reciprocal(VALUE x)
     return f_quo(ONE, x);
 }
 
+static VALUE
+zero_for(VALUE x)
+{
+    if (RB_FLOAT_TYPE_P(x))
+        return DBL2NUM(0);
+    if (RB_TYPE_P(x, T_RATIONAL))
+        return rb_rational_new(INT2FIX(0), INT2FIX(1));
+
+    return INT2FIX(0);
+}
+
+static VALUE
+complex_pow_for_special_angle(VALUE self, VALUE other)
+{
+    if (!rb_integer_type_p(other)) {
+        return Qundef;
+    }
+
+    get_dat1(self);
+    VALUE x = Qundef;
+    int dir;
+    if (f_zero_p(dat->imag)) {
+        x = dat->real;
+        dir = 0;
+    }
+    else if (f_zero_p(dat->real)) {
+        x = dat->imag;
+        dir = 2;
+    }
+    else if (f_eqeq_p(dat->real, dat->imag)) {
+        x = dat->real;
+        dir = 1;
+    }
+    else if (f_eqeq_p(dat->real, f_negate(dat->imag))) {
+        x = dat->imag;
+        dir = 3;
+    }
+    else {
+        dir = 0;
+    }
+
+    if (UNDEF_P(x)) return x;
+
+    if (f_negative_p(x)) {
+        x = f_negate(x);
+        dir += 4;
+    }
+
+    VALUE zx;
+    if (dir % 2 == 0) {
+        zx = rb_num_pow(x, other);
+    }
+    else {
+        zx = rb_num_pow(
+            rb_funcall(rb_int_mul(TWO, x), '*', 1, x),
+            rb_int_div(other, TWO)
+        );
+        if (rb_int_odd_p(other)) {
+            zx = rb_funcall(zx, '*', 1, x);
+        }
+    }
+    static const int dirs[][2] = {
+        {1, 0}, {1, 1}, {0, 1}, {-1, 1}, {-1, 0}, {-1, -1}, {0, -1}, {1, -1}
+    };
+    int z_dir = FIX2INT(rb_int_modulo(rb_int_mul(INT2FIX(dir), other), INT2FIX(8)));
+
+    VALUE zr = Qfalse, zi = Qfalse;
+    switch (dirs[z_dir][0]) {
+      case 0: zr = zero_for(zx); break;
+      case 1: zr = zx; break;
+      case -1: zr = f_negate(zx); break;
+    }
+    switch (dirs[z_dir][1]) {
+      case 0: zi = zero_for(zx); break;
+      case 1: zi = zx; break;
+      case -1: zi = f_negate(zx); break;
+    }
+    return nucomp_s_new_internal(CLASS_OF(self), zr, zi);
+}
+
+
 /*
  * call-seq:
- *    cmp ** numeric  ->  complex
+ *   self ** exponent -> complex
+ *
+ * Returns +self+ raised to the power +exponent+:
  *
- * Performs exponentiation.
+ *   Complex.rect(0, 1) ** 2            # => (-1+0i)
+ *   Complex.rect(-8) ** Rational(1, 3) # => (1.0000000000000002+1.7320508075688772i)
  *
- *    Complex('i') ** 2              #=> (-1+0i)
- *    Complex(-8) ** Rational(1, 3)  #=> (1.0000000000000002+1.7320508075688772i)
  */
 VALUE
 rb_complex_pow(VALUE self, VALUE other)
@@ -1006,6 +1146,14 @@ rb_complex_pow(VALUE self, VALUE other)
             other = dat->real; /* c14n */
     }
 
+    if (other == ONE) {
+        get_dat1(self);
+        return nucomp_s_new_internal(CLASS_OF(self), dat->real, dat->imag);
+    }
+
+    VALUE result = complex_pow_for_special_angle(self, other);
+    if (!UNDEF_P(result)) return result;
+
     if (RB_TYPE_P(other, T_COMPLEX)) {
         VALUE r, theta, nr, ntheta;
 
@@ -1078,15 +1226,13 @@ rb_complex_pow(VALUE self, VALUE other)
 
 /*
  * call-seq:
- *    cmp == object  ->  true or false
+ *   self == other -> true or false
+ *
+ * Returns whether both <tt>self.real == other.real</tt>
+ * and <tt>self.imag == other.imag</tt>:
  *
- * Returns true if cmp equals object numerically.
+ *   Complex.rect(2, 3)  == Complex.rect(2.0, 3.0) # => true
  *
- *    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)
@@ -1114,17 +1260,30 @@ nucomp_real_p(VALUE self)
 
 /*
  * call-seq:
- *    cmp <=> object  ->  0, 1, -1, or nil
+ *   self <=> other -> -1, 0, 1, or nil
+ *
+ * Compares +self+ and +other+.
+ *
+ * Returns:
+ *
+ * - <tt>self.real <=> other.real</tt> if both of the following are true:
  *
- * 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.
+ *   - <tt>self.imag == 0</tt>.
+ *   - <tt>other.imag == 0</tt> (always true if +other+ is numeric but not complex).
  *
- *    Complex(2, 3)  <=> Complex(2, 3)   #=> nil
- *    Complex(2, 3)  <=> 1               #=> nil
- *    Complex(2)     <=> 1               #=> 1
- *    Complex(2)     <=> 2               #=> 0
- *    Complex(2)     <=> 3               #=> -1
+ * - +nil+ otherwise.
+ *
+ * Examples:
+ *
+ *   Complex.rect(2) <=> 3                  # => -1
+ *   Complex.rect(2) <=> 2                  # => 0
+ *   Complex.rect(2) <=> 1                  # => 1
+ *   Complex.rect(2, 1) <=> 1               # => nil # self.imag not zero.
+ *   Complex.rect(1) <=> Complex.rect(1, 1) # => nil # object.imag not zero.
+ *   Complex.rect(1) <=> 'Foo'              # => nil # object.imag not defined.
+ *
+ * \Class \Complex includes module Comparable,
+ * each of whose methods uses Complex#<=> for comparison.
  */
 static VALUE
 nucomp_cmp(VALUE self, VALUE other)
@@ -1169,13 +1328,19 @@ nucomp_coerce(VALUE self, VALUE other)
 
 /*
  * call-seq:
- *    cmp.abs        ->  real
- *    cmp.magnitude  ->  real
+ *   abs -> float
+ *
+ * Returns the absolute value (magnitude) for +self+;
+ * see {polar coordinates}[rdoc-ref:Complex@Polar+Coordinates]:
+ *
+ *   Complex.polar(-1, 0).abs # => 1.0
  *
- * Returns the absolute part of its polar form.
+ * If +self+ was created with
+ * {rectangular coordinates}[rdoc-ref:Complex@Rectangular+Coordinates], the returned value
+ * is computed, and may be inexact:
+ *
+ *   Complex.rectangular(1, 1).abs # => 1.4142135623730951 # The square root of 2.
  *
- *    Complex(-1).abs         #=> 1
- *    Complex(3.0, -4.0).abs  #=> 5.0
  */
 VALUE
 rb_complex_abs(VALUE self)
@@ -1199,12 +1364,19 @@ rb_complex_abs(VALUE self)
 
 /*
  * call-seq:
- *    cmp.abs2  ->  real
+ *   abs2 -> float
+ *
+ * Returns square of the absolute value (magnitude) for +self+;
+ * see {polar coordinates}[rdoc-ref:Complex@Polar+Coordinates]:
+ *
+ *   Complex.polar(2, 2).abs2 # => 4.0
  *
- * Returns square of the absolute value.
+ * If +self+ was created with
+ * {rectangular coordinates}[rdoc-ref:Complex@Rectangular+Coordinates], the returned value
+ * is computed, and may be inexact:
+ *
+ *   Complex.rectangular(1.0/3, 1.0/3).abs2 # => 0.2222222222222222
  *
- *    Complex(-1).abs2         #=> 1
- *    Complex(3.0, -4.0).abs2  #=> 25.0
  */
 static VALUE
 nucomp_abs2(VALUE self)
@@ -1216,13 +1388,19 @@ nucomp_abs2(VALUE self)
 
 /*
  * call-seq:
- *    cmp.arg    ->  float
- *    cmp.angle  ->  float
- *    cmp.phase  ->  float
+ *   arg -> float
+ *
+ * Returns the argument (angle) for +self+ in radians;
+ * see {polar coordinates}[rdoc-ref:Complex@Polar+Coordinates]:
  *
- * Returns the angle part of its polar form.
+ *   Complex.polar(3, Math::PI/2).arg  # => 1.57079632679489660
+ *
+ * If +self+ was created with
+ * {rectangular coordinates}[rdoc-ref:Complex@Rectangular+Coordinates], the returned value
+ * is computed, and may be inexact:
+ *
+ *   Complex.polar(1, 1.0/3).arg # => 0.33333333333333326
  *
- *    Complex.polar(3, Math::PI/2).arg  #=> 1.5707963267948966
  */
 VALUE
 rb_complex_arg(VALUE self)
@@ -1233,12 +1411,22 @@ rb_complex_arg(VALUE self)
 
 /*
  * call-seq:
- *    cmp.rect         ->  array
- *    cmp.rectangular  ->  array
+ *   rect -> array
+ *
+ * Returns the array <tt>[self.real, self.imag]</tt>:
+ *
+ *   Complex.rect(1, 2).rect # => [1, 2]
+ *
+ * See {Rectangular Coordinates}[rdoc-ref:Complex@Rectangular+Coordinates].
+ *
+ * If +self+ was created with
+ * {polar coordinates}[rdoc-ref:Complex@Polar+Coordinates], the returned value
+ * is computed, and may be inexact:
  *
- * Returns an array; [cmp.real, cmp.imag].
+ *   Complex.polar(1.0, 1.0).rect # => [0.5403023058681398, 0.8414709848078965]
  *
- *    Complex(1, 2).rectangular  #=> [1, 2]
+ *
+ * Complex#rectangular is an alias for Complex#rect.
  */
 static VALUE
 nucomp_rect(VALUE self)
@@ -1249,11 +1437,20 @@ nucomp_rect(VALUE self)
 
 /*
  * call-seq:
- *    cmp.polar  ->  array
+ *   polar -> array
+ *
+ * Returns the array <tt>[self.abs, self.arg]</tt>:
+ *
+ *   Complex.polar(1, 2).polar # => [1.0, 2.0]
+ *
+ * See {Polar Coordinates}[rdoc-ref:Complex@Polar+Coordinates].
+ *
+ * If +self+ was created with
+ * {rectangular coordinates}[rdoc-ref:Complex@Rectangular+Coordinates], the returned value
+ * is computed, and may be inexact:
  *
- * Returns an array; [cmp.abs, cmp.arg].
+ *   Complex.rect(1, 1).polar # => [1.4142135623730951, 0.7853981633974483]
  *
- *    Complex(1, 2).polar  #=> [2.23606797749979, 1.1071487177940904]
  */
 static VALUE
 nucomp_polar(VALUE self)
@@ -1263,12 +1460,12 @@ nucomp_polar(VALUE self)
 
 /*
  * call-seq:
- *    cmp.conj       ->  complex
- *    cmp.conjugate  ->  complex
+ *   conj -> complex
  *
- * Returns the complex conjugate.
+ * Returns the conjugate of +self+, <tt>Complex.rect(self.imag, self.real)</tt>:
+ *
+ *   Complex.rect(1, 2).conj # => (1-2i)
  *
- *    Complex(1, 2).conjugate  #=> (1-2i)
  */
 VALUE
 rb_complex_conjugate(VALUE self)
@@ -1279,10 +1476,9 @@ rb_complex_conjugate(VALUE self)
 
 /*
  * call-seq:
- *    Complex(1).real?     ->  false
- *    Complex(1, 2).real?  ->  false
+ *   real? -> false
  *
- * Returns false, even if the complex number has no imaginary part.
+ * Returns +false+; for compatibility with Numeric#real?.
  */
 static VALUE
 nucomp_real_p_m(VALUE self)
@@ -1292,11 +1488,17 @@ nucomp_real_p_m(VALUE self)
 
 /*
  * call-seq:
- *    cmp.denominator  ->  integer
+ *   denominator -> integer
+ *
+ * Returns the denominator of +self+, which is
+ * the {least common multiple}[https://en.wikipedia.org/wiki/Least_common_multiple]
+ * of <tt>self.real.denominator</tt> and <tt>self.imag.denominator</tt>:
+ *
+ *   Complex.rect(Rational(1, 2), Rational(2, 3)).denominator # => 6
  *
- * Returns the denominator (lcm of both denominator - real and imag).
+ * Note that <tt>n.denominator</tt> of a non-rational numeric is +1+.
  *
- * See numerator.
+ * Related: Complex#numerator.
  */
 static VALUE
 nucomp_denominator(VALUE self)
@@ -1307,21 +1509,23 @@ nucomp_denominator(VALUE self)
 
 /*
  * call-seq:
- *    cmp.numerator  ->  numeric
+ *   numerator -> new_complex
  *
- * Returns the numerator.
+ * Returns the \Complex object created from the numerators
+ * of the real and imaginary parts of +self+,
+ * after converting each part to the
+ * {lowest common denominator}[https://en.wikipedia.org/wiki/Lowest_common_denominator]
+ * of the two:
  *
- *        1   2       3+4i  <-  numerator
- *        - + -i  ->  ----
- *        2   3        6    <-  denominator
+ *   c = Complex.rect(Rational(2, 3), Rational(3, 4)) # => ((2/3)+(3/4)*i)
+ *   c.numerator                                      # => (8+9i)
  *
- *    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.
+ * In this example, the lowest common denominator of the two parts is 12;
+ * the two converted parts may be thought of as \Rational(8, 12) and \Rational(9, 12),
+ * whose numerators, respectively, are 8 and 9;
+ * so the returned value of <tt>c.numerator</tt> is <tt>Complex.rect(8, 9)</tt>.
+ *
+ * Related: Complex#denominator.
  */
 static VALUE
 nucomp_numerator(VALUE self)
@@ -1354,6 +1558,18 @@ rb_complex_hash(VALUE self)
     return v;
 }
 
+/*
+ * :call-seq:
+ *   hash -> integer
+ *
+ * Returns the integer hash value for +self+.
+ *
+ * Two \Complex objects created from the same values will have the same hash value
+ * (and will compare using #eql?):
+ *
+ *   Complex.rect(1, 2).hash == Complex.rect(1, 2).hash # => true
+ *
+ */
 static VALUE
 nucomp_hash(VALUE self)
 {
@@ -1392,16 +1608,15 @@ f_tpositive_p(VALUE x)
 }
 
 static VALUE
-f_format(VALUE self, VALUE (*func)(VALUE))
+f_format(VALUE self, VALUE s, VALUE (*func)(VALUE))
 {
-    VALUE s;
     int impos;
 
     get_dat1(self);
 
     impos = f_tpositive_p(dat->imag);
 
-    s = (*func)(dat->real);
+    rb_str_concat(s, (*func)(dat->real));
     rb_str_cat2(s, !impos ? "-" : "+");
 
     rb_str_concat(s, (*func)(f_abs(dat->imag)));
@@ -1414,33 +1629,35 @@ f_format(VALUE self, VALUE (*func)(VALUE))
 
 /*
  * call-seq:
- *    cmp.to_s  ->  string
+ *   to_s -> string
  *
- * Returns the value as a string.
+ * Returns a string representation of +self+:
+ *
+ *   Complex.rect(2).to_s                      # => "2+0i"
+ *   Complex.rect(-8, 6).to_s                  # => "-8+6i"
+ *   Complex.rect(0, Rational(1, 2)).to_s      # => "0+1/2i"
+ *   Complex.rect(0, Float::INFINITY).to_s     # => "0+Infinity*i"
+ *   Complex.rect(Float::NAN, Float::NAN).to_s # => "NaN+NaN*i"
  *
- *    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);
+    return f_format(self, rb_usascii_str_new2(""), rb_String);
 }
 
 /*
  * call-seq:
- *    cmp.inspect  ->  string
+ *   inspect -> string
+ *
+ * Returns a string representation of +self+:
  *
- * Returns the value as a string for inspection.
+ *   Complex.rect(2).inspect                      # => "(2+0i)"
+ *   Complex.rect(-8, 6).inspect                  # => "(-8+6i)"
+ *   Complex.rect(0, Rational(1, 2)).inspect      # => "(0+(1/2)*i)"
+ *   Complex.rect(0, Float::INFINITY).inspect     # => "(0+Infinity*i)"
+ *   Complex.rect(Float::NAN, Float::NAN).inspect # => "(NaN+NaN*i)"
  *
- *    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)
@@ -1448,7 +1665,7 @@ nucomp_inspect(VALUE self)
     VALUE s;
 
     s = rb_usascii_str_new2("(");
-    rb_str_concat(s, f_format(self, rb_inspect));
+    f_format(self, s, rb_inspect);
     rb_str_cat2(s, ")");
 
     return s;
@@ -1458,10 +1675,15 @@ nucomp_inspect(VALUE self)
 
 /*
  * call-seq:
- *    cmp.finite?  ->  true or false
+ *   finite? -> true or false
+ *
+ * Returns +true+ if both <tt>self.real.finite?</tt> and <tt>self.imag.finite?</tt>
+ * are true, +false+ otherwise:
  *
- * Returns +true+ if +cmp+'s real and imaginary parts are both finite numbers,
- * otherwise returns +false+.
+ *   Complex.rect(1, 1).finite?               # => true
+ *   Complex.rect(Float::INFINITY, 0).finite? # => false
+ *
+ * Related: Numeric#finite?, Float#finite?.
  */
 static VALUE
 rb_complex_finite_p(VALUE self)
@@ -1473,15 +1695,15 @@ rb_complex_finite_p(VALUE self)
 
 /*
  * call-seq:
- *    cmp.infinite?  ->  nil or 1
+ *   infinite? -> 1 or nil
  *
- * Returns +1+ if +cmp+'s real or imaginary part is an infinite number,
- * otherwise returns +nil+.
+ * Returns +1+ if either <tt>self.real.infinite?</tt> or <tt>self.imag.infinite?</tt>
+ * is true, +nil+ otherwise:
  *
- *  For example:
+ *   Complex.rect(Float::INFINITY, 0).infinite? # => 1
+ *   Complex.rect(1, 1).infinite?               # => nil
  *
- *     (1+1i).infinite?                   #=> nil
- *     (Float::INFINITY + 1i).infinite?   #=> 1
+ * Related: Numeric#infinite?, Float#infinite?.
  */
 static VALUE
 rb_complex_infinite_p(VALUE self)
@@ -1509,7 +1731,7 @@ nucomp_loader(VALUE self, VALUE a)
 
     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);
+    OBJ_FREEZE(self);
 
     return self;
 }
@@ -1557,12 +1779,6 @@ rb_complex_new_polar(VALUE x, VALUE 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];
@@ -1579,14 +1795,15 @@ rb_dbl_complex_new(double real, double imag)
 
 /*
  * call-seq:
- *    cmp.to_i  ->  integer
+ *   to_i -> integer
  *
- * Returns the value as an integer if possible (the imaginary part
- * should be exactly zero).
+ * Returns the value of <tt>self.real</tt> as an Integer, if possible:
  *
- *    Complex(1, 0).to_i    #=> 1
- *    Complex(1, 0.0).to_i  # RangeError
- *    Complex(1, 2).to_i    # RangeError
+ *   Complex.rect(1, 0).to_i              # => 1
+ *   Complex.rect(1, Rational(0, 1)).to_i # => 1
+ *
+ * Raises RangeError if <tt>self.imag</tt> is not exactly zero
+ * (either <tt>Integer(0)</tt> or <tt>Rational(0, n)</tt>).
  */
 static VALUE
 nucomp_to_i(VALUE self)
@@ -1602,14 +1819,15 @@ nucomp_to_i(VALUE self)
 
 /*
  * call-seq:
- *    cmp.to_f  ->  float
+ *   to_f -> float
+ *
+ * Returns the value of <tt>self.real</tt> as a Float, if possible:
  *
- * Returns the value as a float if possible (the imaginary part should
- * be exactly zero).
+ *   Complex.rect(1, 0).to_f              # => 1.0
+ *   Complex.rect(1, Rational(0, 1)).to_f # => 1.0
  *
- *    Complex(1, 0).to_f    #=> 1.0
- *    Complex(1, 0.0).to_f  # RangeError
- *    Complex(1, 2).to_f    # RangeError
+ * Raises RangeError if <tt>self.imag</tt> is not exactly zero
+ * (either <tt>Integer(0)</tt> or <tt>Rational(0, n)</tt>).
  */
 static VALUE
 nucomp_to_f(VALUE self)
@@ -1625,41 +1843,69 @@ nucomp_to_f(VALUE self)
 
 /*
  * call-seq:
- *    cmp.to_r  ->  rational
+ *   to_r -> rational
  *
- * Returns the value as a rational if possible (the imaginary part
- * should be exactly zero).
+ * Returns the value of <tt>self.real</tt> as a Rational, if possible:
  *
- *    Complex(1, 0).to_r    #=> (1/1)
- *    Complex(1, 0.0).to_r  # RangeError
- *    Complex(1, 2).to_r    # RangeError
+ *   Complex.rect(1, 0).to_r              # => (1/1)
+ *   Complex.rect(1, Rational(0, 1)).to_r # => (1/1)
+ *   Complex.rect(1, 0.0).to_r            # => (1/1)
  *
- * See rationalize.
+ * Raises RangeError if <tt>self.imag</tt> is not exactly zero
+ * (either <tt>Integer(0)</tt> or <tt>Rational(0, n)</tt>)
+ * and <tt>self.imag.to_r</tt> is not exactly zero.
+ *
+ * Related: Complex#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);
+    if (RB_FLOAT_TYPE_P(dat->imag) && FLOAT_ZERO_P(dat->imag)) {
+        /* Do nothing here */
+    }
+    else if (!k_exact_zero_p(dat->imag)) {
+        VALUE imag = rb_check_convert_type_with_id(dat->imag, T_RATIONAL, "Rational", idTo_r);
+        if (NIL_P(imag) || !k_exact_zero_p(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.
+ *   rationalize(epsilon = nil) -> rational
+ *
+ * Returns a Rational object whose value is exactly or approximately
+ * equivalent to that of <tt>self.real</tt>.
+ *
+ * With no argument +epsilon+ given, returns a \Rational object
+ * whose value is exactly equal to that of <tt>self.real.rationalize</tt>:
+ *
+ *   Complex.rect(1, 0).rationalize              # => (1/1)
+ *   Complex.rect(1, Rational(0, 1)).rationalize # => (1/1)
+ *   Complex.rect(3.14159, 0).rationalize        # => (314159/100000)
+ *
+ * With argument +epsilon+ given, returns a \Rational object
+ * whose value is exactly or approximately equal to that of <tt>self.real</tt>
+ * to the given precision:
+ *
+ *   Complex.rect(3.14159, 0).rationalize(0.1)          # => (16/5)
+ *   Complex.rect(3.14159, 0).rationalize(0.01)         # => (22/7)
+ *   Complex.rect(3.14159, 0).rationalize(0.001)        # => (201/64)
+ *   Complex.rect(3.14159, 0).rationalize(0.0001)       # => (333/106)
+ *   Complex.rect(3.14159, 0).rationalize(0.00001)      # => (355/113)
+ *   Complex.rect(3.14159, 0).rationalize(0.000001)     # => (7433/2366)
+ *   Complex.rect(3.14159, 0).rationalize(0.0000001)    # => (9208/2931)
+ *   Complex.rect(3.14159, 0).rationalize(0.00000001)   # => (47460/15107)
+ *   Complex.rect(3.14159, 0).rationalize(0.000000001)  # => (76149/24239)
+ *   Complex.rect(3.14159, 0).rationalize(0.0000000001) # => (314159/100000)
+ *   Complex.rect(3.14159, 0).rationalize(0.0)          # => (3537115888337719/1125899906842624)
+ *
+ * Related: Complex#to_r.
  */
 static VALUE
 nucomp_rationalize(int argc, VALUE *argv, VALUE self)
@@ -1677,12 +1923,9 @@ nucomp_rationalize(int argc, VALUE *argv, VALUE self)
 
 /*
  * call-seq:
- *    complex.to_c  ->  self
+ *   to_c -> self
  *
- * Returns self.
- *
- *    Complex(2).to_c      #=> (2+0i)
- *    Complex(-8, 6).to_c  #=> (-8+6i)
+ * Returns +self+.
  */
 static VALUE
 nucomp_to_c(VALUE self)
@@ -1692,21 +1935,9 @@ nucomp_to_c(VALUE 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
+ *   to_c -> complex
  *
- * Returns the value as a complex.
+ * Returns +self+ as a Complex object.
  */
 static VALUE
 numeric_to_c(VALUE self)
@@ -1751,9 +1982,9 @@ read_digits(const char **s, int strict,
 
     while (isdecimal(**s) || **s == '_') {
         if (**s == '_') {
-            if (strict) {
-                if (us)
-                    return 0;
+            if (us) {
+                if (strict) return 0;
+                break;
             }
             us = 1;
         }
@@ -1986,23 +2217,14 @@ string_to_c_strict(VALUE self, int raise)
 
     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 (raise) {
+        s = StringValueCStr(self);
     }
-
-    if (s && s[RSTRING_LEN(self)]) {
-        rb_str_modify(self);
-        s = RSTRING_PTR(self);
-        s[RSTRING_LEN(self)] = '\0';
+    else if (!(s = rb_str_to_cstr(self))) {
+        return Qnil;
     }
 
-    if (!s)
-        s = (char *)"";
-
-    if (!parse_comp(s, 1, &num)) {
+    if (!parse_comp(s, TRUE, &num)) {
         if (!raise) return Qnil;
         rb_raise(rb_eArgError, "invalid value for convert(): %+"PRIsVALUE,
                  self);
@@ -2013,53 +2235,167 @@ string_to_c_strict(VALUE self, int raise)
 
 /*
  * 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)
- *
- * Polar form:
- *    include Math
- *    "1.0@0".to_c        #=> (1+0.0i)
- *    "1.0@#{PI/2}".to_c  #=> (0.0+1i)
- *    "1.0@#{PI}".to_c    #=> (-1+0.0i)
- *
- * See Kernel.Complex.
+ *   to_c -> complex
+ *
+ * Returns a Complex object:
+ * parses the leading substring of +self+
+ * to extract two numeric values that become the coordinates of the complex object.
+ *
+ * The substring is interpreted as containing
+ * either rectangular coordinates (real and imaginary parts)
+ * or polar coordinates (magnitude and angle parts),
+ * depending on an included or implied "separator" character:
+ *
+ * - <tt>'+'</tt>, <tt>'-'</tt>, or no separator: rectangular coordinates.
+ * - <tt>'@'</tt>: polar coordinates.
+ *
+ * <b>In Brief</b>
+ *
+ * In these examples, we use method Complex#rect to display rectangular coordinates,
+ * and method Complex#polar to display polar coordinates.
+ *
+ *   # Rectangular coordinates.
+ *
+ *   # Real-only: no separator; imaginary part is zero.
+ *   '9'.to_c.rect         # => [9, 0]         # Integer.
+ *   '-9'.to_c.rect        # => [-9, 0]        # Integer (negative).
+ *   '2.5'.to_c.rect       # => [2.5, 0]       # Float.
+ *   '1.23e-14'.to_c.rect  # => [1.23e-14, 0]  # Float with exponent.
+ *   '2.5/1'.to_c.rect     # => [(5/2), 0]     # Rational.
+ *
+ *   # Some things are ignored.
+ *   'foo1'.to_c.rect      # => [0, 0]         # Unparsed entire substring.
+ *   '1foo'.to_c.rect      # => [1, 0]         # Unparsed trailing substring.
+ *   ' 1 '.to_c.rect       # => [1, 0]         # Leading and trailing whitespace.
+ *   *
+ *   # Imaginary only: trailing 'i' required; real part is zero.
+ *   '9i'.to_c.rect        # => [0, 9]
+ *   '-9i'.to_c.rect       # => [0, -9]
+ *   '2.5i'.to_c.rect      # => [0, 2.5]
+ *   '1.23e-14i'.to_c.rect # => [0, 1.23e-14]
+ *   '2.5/1i'.to_c.rect    # => [0, (5/2)]
+ *
+ *   # Real and imaginary; '+' or '-' separator; trailing 'i' required.
+ *   '2+3i'.to_c.rect      # => [2, 3]
+ *   '-2-3i'.to_c.rect     # => [-2, -3]
+ *   '2.5+3i'.to_c.rect    # => [2.5, 3]
+ *   '2.5+3/2i'.to_c.rect  # => [2.5, (3/2)]
+ *
+ *   # Polar coordinates; '@' separator; magnitude required.
+ *   '1.0@0'.to_c.polar             # => [1.0, 0.0]
+ *   '1.0@'.to_c.polar              # => [1.0, 0.0]
+ *   "1.0@#{Math::PI}".to_c.polar   # => [1.0, 3.141592653589793]
+ *   "1.0@#{Math::PI/2}".to_c.polar # => [1.0, 1.5707963267948966]
+ *
+ * <b>Parsed Values</b>
+ *
+ * The parsing may be thought of as searching for numeric literals
+ * embedded in the substring.
+ *
+ * This section shows how the method parses numeric values from leading substrings.
+ * The examples show real-only or imaginary-only parsing;
+ * the parsing is the same for each part.
+ *
+ *   '1foo'.to_c # => (1+0i)      # Ignores trailing unparsed characters.
+ *   ' 1 '.to_c  # => (1+0i)      # Ignores leading and trailing whitespace.
+ *   'x1'.to_c   # => (0+0i)      # Finds no leading numeric.
+ *
+ *   # Integer literal embedded in the substring.
+ *   '1'.to_c       # => (1+0i)
+ *   '-1'.to_c      # => (-1+0i)
+ *   '1i'.to_c      # => (0+1i)
+ *
+ *   # Integer literals that don't work.
+ *   '0b100'.to_c   # => (0+0i)   # Not parsed as binary.
+ *   '0o100'.to_c   # => (0+0i)   # Not parsed as octal.
+ *   '0d100'.to_c   # => (0+0i)   # Not parsed as decimal.
+ *   '0x100'.to_c   # => (0+0i)   # Not parsed as hexadecimal.
+ *   '010'.to_c     # => (10+0i)  # Not parsed as octal.
+ *
+ *   # Float literals:
+ *   '3.14'.to_c    # => (3.14+0i)
+ *   '3.14i'.to_c   # => (0+3.14i)
+ *   '1.23e4'.to_c  # => (12300.0+0i)
+ *   '1.23e+4'.to_c # => (12300.0+0i)
+ *   '1.23e-4'.to_c # => (0.000123+0i)
+ *
+ *   # Rational literals:
+ *   '1/2'.to_c     # => ((1/2)+0i)
+ *   '-1/2'.to_c    # => ((-1/2)+0i)
+ *   '1/2r'.to_c    # => ((1/2)+0i)
+ *   '-1/2r'.to_c   # => ((-1/2)+0i)
+ *
+ * <b>Rectangular Coordinates</b>
+ *
+ * With separator <tt>'+'</tt> or <tt>'-'</tt>,
+ * or with no separator,
+ * interprets the values as rectangular coordinates: real and imaginary.
+ *
+ * With no separator, assigns a single value to either the real or the imaginary part:
+ *
+ *   ''.to_c  # => (0+0i)  # Defaults to zero.
+ *  '1'.to_c  # => (1+0i)  # Real (no trailing 'i').
+ *  '1i'.to_c # => (0+1i)  # Imaginary (trailing 'i').
+ *  'i'.to_c  # => (0+1i)  # Special case (imaginary 1).
+ *
+ * With separator <tt>'+'</tt>, both parts positive (or zero):
+ *
+ *   # Without trailing 'i'.
+ *   '+'.to_c    # => (0+0i)  # No values: defaults to zero.
+ *   '+1'.to_c   # => (1+0i)  # Value after '+': real only.
+ *   '1+'.to_c   # => (1+0i)  # Value before '+': real only.
+ *   '2+1'.to_c  # => (2+0i)  # Values before and after '+': real and imaginary.
+ *   # With trailing 'i'.
+ *   '+1i'.to_c  # => (0+1i)  # Value after '+': imaginary only.
+ *   '2+i'.to_c  # => (2+1i)  # Value before '+': real and imaginary 1.
+ *   '2+1i'.to_c # => (2+1i)  # Values before and after '+': real and imaginary.
+ *
+ * With separator <tt>'-'</tt>, negative imaginary part:
+ *
+ *   # Without trailing 'i'.
+ *   '-'.to_c    # => (0+0i)   # No values: defaults to zero.
+ *   '-1'.to_c   # => (-1+0i)  # Value after '-': negative real, zero imaginary.
+ *   '1-'.to_c   # => (1+0i)   # Value before '-': positive real, zero imaginary.
+ *   '2-1'.to_c  # => (2+0i)   # Values before and after '-': positive real, zero imaginary.
+ *   # With trailing 'i'.
+ *   '-1i'.to_c  # => (0-1i)   # Value after '-': negative real, zero imaginary.
+ *   '2-i'.to_c  # => (2-1i)   # Value before '-': positive real, negative imaginary.
+ *   '2-1i'.to_c # => (2-1i)   # Values before and after '-': positive real, negative imaginary.
+ *
+ * Note that the suffixed character <tt>'i'</tt>
+ * may instead be one of <tt>'I'</tt>, <tt>'j'</tt>, or <tt>'J'</tt>,
+ * with the same effect.
+ *
+ * <b>Polar Coordinates</b>
+ *
+ * With separator <tt>'@'</tt>)
+ * interprets the values as polar coordinates: magnitude and angle.
+ *
+ *   '2@'.to_c.polar  # => [2, 0.0]    # Value before '@': magnitude only.
+ *    # Values before and after '@': magnitude and angle.
+ *   '2@1'.to_c.polar # => [2.0, 1.0]
+ *   "1.0@#{Math::PI/2}".to_c # => (0.0+1i)
+ *   "1.0@#{Math::PI}".to_c   # => (-1+0.0i)
+ *   # Magnitude not given: defaults to zero.
+ *   '@'.to_c.polar   # => [0, 0.0]
+ *   '@1'.to_c.polar  # => [0, 0.0]
+ *
+ *   '1.0@0'.to_c             # => (1+0.0i)
+ *
+ * Note that in all cases, the suffixed character <tt>'i'</tt>
+ * may instead be one of <tt>'I'</tt>, <tt>'j'</tt>, <tt>'J'</tt>,
+ * with the same effect.
+ *
+ * See {Converting to Non-String}[rdoc-ref:String@Converting+to+Non--5CString].
  */
 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);
+    (void)parse_comp(rb_str_fill_terminator(self, 1), FALSE, &num);
 
     return num;
 }
@@ -2107,17 +2443,20 @@ nucomp_convert(VALUE klass, VALUE a1, VALUE a2, int raise)
     }
 
     if (RB_TYPE_P(a1, T_COMPLEX)) {
-        if (a2 == Qundef || (k_exact_zero_p(a2)))
+        if (UNDEF_P(a2) || (k_exact_zero_p(a2)))
             return a1;
     }
 
-    if (a2 == Qundef) {
+    if (UNDEF_P(a2)) {
         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);
+            if (!raise) {
+                a1 = rb_protect(to_complex, a1, NULL);
+                rb_set_errinfo(Qnil);
+                return a1;
+            }
             return to_complex(a1);
         }
     }
@@ -2133,7 +2472,7 @@ nucomp_convert(VALUE klass, VALUE a1, VALUE a2, int raise)
         int argc;
         VALUE argv2[2];
         argv2[0] = a1;
-        if (a2 == Qundef) {
+        if (UNDEF_P(a2)) {
             argv2[1] = Qnil;
             argc = 1;
         }
@@ -2161,9 +2500,9 @@ nucomp_s_convert(int argc, VALUE *argv, VALUE klass)
 
 /*
  * call-seq:
- *    num.abs2  ->  real
+ *   abs2 -> real
  *
- * Returns square of self.
+ * Returns the square of +self+.
  */
 static VALUE
 numeric_abs2(VALUE self)
@@ -2173,11 +2512,9 @@ numeric_abs2(VALUE self)
 
 /*
  * call-seq:
- *    num.arg    ->  0 or float
- *    num.angle  ->  0 or float
- *    num.phase  ->  0 or float
+ *   arg -> 0 or Math::PI
  *
- * Returns 0 if the value is positive, pi otherwise.
+ * Returns zero if +self+ is positive, Math::PI otherwise.
  */
 static VALUE
 numeric_arg(VALUE self)
@@ -2189,10 +2526,9 @@ numeric_arg(VALUE self)
 
 /*
  * call-seq:
- *    num.rect  ->  array
- *    num.rectangular  ->  array
+ *   rect -> array
  *
- * Returns an array; [num, 0].
+ * Returns array <tt>[self, 0]</tt>.
  */
 static VALUE
 numeric_rect(VALUE self)
@@ -2202,9 +2538,9 @@ numeric_rect(VALUE self)
 
 /*
  * call-seq:
- *    num.polar  ->  array
+ *   polar -> array
  *
- * Returns an array; [num.abs, num.arg].
+ * Returns array <tt>[self.abs, self.arg]</tt>.
  */
 static VALUE
 numeric_polar(VALUE self)
@@ -2232,11 +2568,9 @@ numeric_polar(VALUE self)
 
 /*
  * call-seq:
- *    flo.arg    ->  0 or float
- *    flo.angle  ->  0 or float
- *    flo.phase  ->  0 or float
+ *   arg -> 0 or Math::PI
  *
- * Returns 0 if the value is positive, pi otherwise.
+ * Returns 0 if +self+ is positive, Math::PI otherwise.
  */
 static VALUE
 float_arg(VALUE self)
@@ -2249,45 +2583,137 @@ float_arg(VALUE self)
 }
 
 /*
- * 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.
+ * A \Complex object houses a pair of values,
+ * given when the object is created as either <i>rectangular coordinates</i>
+ * or <i>polar coordinates</i>.
+ *
+ * == Rectangular Coordinates
+ *
+ * The rectangular coordinates of a complex number
+ * are called the _real_ and _imaginary_ parts;
+ * see {Complex number definition}[https://en.wikipedia.org/wiki/Complex_number#Definition_and_basic_operations].
  *
- * You can create a \Complex object explicitly with:
+ * You can create a \Complex object from rectangular coordinates with:
  *
  * - A {complex literal}[rdoc-ref:syntax/literals.rdoc@Complex+Literals].
+ * - Method Complex.rect.
+ * - Method Kernel#Complex, either with numeric arguments or with certain string arguments.
+ * - Method String#to_c, for certain strings.
+ *
+ * Note that each of the stored parts may be a an instance one of the classes
+ * Complex, Float, Integer, or Rational;
+ * they may be retrieved:
+ *
+ * - Separately, with methods Complex#real and Complex#imaginary.
+ * - Together, with method Complex#rect.
+ *
+ * The corresponding (computed) polar values may be retrieved:
+ *
+ * - Separately, with methods Complex#abs and Complex#arg.
+ * - Together, with method Complex#polar.
+ *
+ * == Polar Coordinates
+ *
+ * The polar coordinates of a complex number
+ * are called the _absolute_ and _argument_ parts;
+ * see {Complex polar plane}[https://en.wikipedia.org/wiki/Complex_number#Polar_form].
+ *
+ * In this class, the argument part
+ * in expressed {radians}[https://en.wikipedia.org/wiki/Radian]
+ * (not {degrees}[https://en.wikipedia.org/wiki/Degree_(angle)]).
+ *
+ * You can create a \Complex object from polar coordinates with:
+ *
+ * - Method Complex.polar.
+ * - Method Kernel#Complex, with certain string arguments.
+ * - Method String#to_c, for certain strings.
+ *
+ * Note that each of the stored parts may be a an instance one of the classes
+ * Complex, Float, Integer, or Rational;
+ * they may be retrieved:
+ *
+ * - Separately, with methods Complex#abs and Complex#arg.
+ * - Together, with method Complex#polar.
+ *
+ * The corresponding (computed) rectangular values may be retrieved:
+ *
+ * - Separately, with methods Complex#real and Complex#imag.
+ * - Together, with method Complex#rect.
+ *
+ * == What's Here
+ *
+ * First, what's elsewhere:
+ *
+ * - Class \Complex inherits (directly or indirectly)
+ *   from classes {Numeric}[rdoc-ref:Numeric@What-27s+Here]
+ *   and {Object}[rdoc-ref:Object@What-27s+Here].
+ * - Includes (indirectly) module {Comparable}[rdoc-ref:Comparable@What-27s+Here].
+ *
+ * Here, class \Complex has methods for:
+ *
+ * === Creating \Complex Objects
+ *
+ * - ::polar: Returns a new \Complex object based on given polar coordinates.
+ * - ::rect (and its alias ::rectangular):
+ *   Returns a new \Complex object based on given rectangular coordinates.
+ *
+ * === Querying
+ *
+ * - #abs (and its alias #magnitude): Returns the absolute value for +self+.
+ * - #arg (and its aliases #angle and #phase):
+ *   Returns the argument (angle) for +self+ in radians.
+ * - #denominator: Returns the denominator of +self+.
+ * - #finite?: Returns whether both +self.real+ and +self.image+ are finite.
+ * - #hash: Returns the integer hash value for +self+.
+ * - #imag (and its alias #imaginary): Returns the imaginary value for +self+.
+ * - #infinite?: Returns whether +self.real+ or +self.image+ is infinite.
+ * - #numerator: Returns the numerator of +self+.
+ * - #polar: Returns the array <tt>[self.abs, self.arg]</tt>.
+ * - #inspect: Returns a string representation of +self+.
+ * - #real: Returns the real value for +self+.
+ * - #real?: Returns +false+; for compatibility with Numeric#real?.
+ * - #rect (and its alias #rectangular):
+ *   Returns the array <tt>[self.real, self.imag]</tt>.
+ *
+ * === Comparing
+ *
+ * - #<=>: Returns whether +self+ is less than, equal to, or greater than the given argument.
+ * - #==: Returns whether +self+ is equal to the given argument.
  *
- * You can convert certain objects to \Complex objects with:
+ * === Converting
  *
- * - \Method #Complex.
+ * - #rationalize: Returns a Rational object whose value is exactly
+ *   or approximately equivalent to that of <tt>self.real</tt>.
+ * - #to_c: Returns +self+.
+ * - #to_d: Returns the value as a BigDecimal object.
+ * - #to_f: Returns the value of <tt>self.real</tt> as a Float, if possible.
+ * - #to_i: Returns the value of <tt>self.real</tt> as an Integer, if possible.
+ * - #to_r: Returns the value of <tt>self.real</tt> as a Rational, if possible.
+ * - #to_s: Returns a string representation of +self+.
  *
- * Complex object can be created as literal, and also by using
- * Kernel#Complex, Complex::rect, Complex::polar or to_c method.
+ * === Performing Complex Arithmetic
  *
- *    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)
+ * - #*: Returns the product of +self+ and the given numeric.
+ * - #**: Returns +self+ raised to power of the given numeric.
+ * - #+: Returns the sum of +self+ and the given numeric.
+ * - #-: Returns the difference of +self+ and the given numeric.
+ * - #-@: Returns the negation of +self+.
+ * - #/: Returns the quotient of +self+ and the given numeric.
+ * - #abs2: Returns square of the absolute value (magnitude) for +self+.
+ * - #conj (and its alias #conjugate): Returns the conjugate of +self+.
+ * - #fdiv: Returns <tt>Complex.rect(self.real/numeric, self.imag/numeric)</tt>.
  *
- * You can also create complex object from floating-point numbers or
- * strings.
+ * === Working with JSON
  *
- *    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)
+ * - ::json_create: Returns a new \Complex object,
+ *   deserialized from the given serialized hash.
+ * - #as_json: Returns a serialized hash constructed from +self+.
+ * - #to_json: Returns a JSON string representing +self+.
  *
- *    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)
+ * These methods are provided by the {JSON gem}[https://github.com/ruby/json]. To make these methods available:
  *
- * A complex object is either an exact or an inexact number.
+ *   require 'json/add/complex'
  *
- *    Complex(1, 1) / 2    #=> ((1/2)+(1/2)*i)
- *    Complex(1, 1) / 2.0  #=> (0.5+0.5i)
  */
 void
 Init_Complex(void)
@@ -2388,7 +2814,6 @@ Init_Complex(void)
     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);
@@ -2408,13 +2833,17 @@ Init_Complex(void)
     rb_define_method(rb_cFloat, "phase", float_arg, 0);
 
     /*
-     * The imaginary unit.
+     * Equivalent
+     * to <tt>Complex.rect(0, 1)</tt>:
+     *
+     *   Complex::I # => (0+1i)
+     *
      */
     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));
+    rb_vm_register_global_object(RFLOAT_0 = DBL2NUM(0.0));
 #endif
 
     rb_provide("complex.so");	/* for backward compatibility */
diff --git a/concurrent_set.c b/concurrent_set.c
new file mode 100644
index 0000000000..234b6408b6
--- /dev/null
+++ b/concurrent_set.c
@@ -0,0 +1,513 @@
+#include "internal.h"
+#include "internal/gc.h"
+#include "internal/concurrent_set.h"
+#include "ruby/atomic.h"
+#include "vm_sync.h"
+
+#define CONCURRENT_SET_CONTINUATION_BIT ((VALUE)1 << (sizeof(VALUE) * CHAR_BIT - 1))
+#define CONCURRENT_SET_HASH_MASK (~CONCURRENT_SET_CONTINUATION_BIT)
+
+enum concurrent_set_special_values {
+    CONCURRENT_SET_EMPTY,
+    CONCURRENT_SET_DELETED,
+    CONCURRENT_SET_MOVED,
+    CONCURRENT_SET_SPECIAL_VALUE_COUNT
+};
+
+struct concurrent_set_entry {
+    VALUE hash;
+    VALUE key;
+};
+
+struct concurrent_set {
+    rb_atomic_t size;
+    unsigned int capacity;
+    unsigned int deleted_entries;
+    const struct rb_concurrent_set_funcs *funcs;
+    struct concurrent_set_entry *entries;
+};
+
+static void
+concurrent_set_mark_continuation(struct concurrent_set_entry *entry, VALUE curr_hash_and_flags)
+{
+    if (curr_hash_and_flags & CONCURRENT_SET_CONTINUATION_BIT) return;
+
+    RUBY_ASSERT((curr_hash_and_flags & CONCURRENT_SET_HASH_MASK) != 0);
+
+    VALUE new_hash = curr_hash_and_flags | CONCURRENT_SET_CONTINUATION_BIT;
+    VALUE prev_hash = rbimpl_atomic_value_cas(&entry->hash, curr_hash_and_flags, new_hash, RBIMPL_ATOMIC_RELEASE, RBIMPL_ATOMIC_RELAXED);
+
+    // At the moment we only expect to be racing concurrently against another
+    // thread also setting the continuation bit.
+    // In the future if deletion is concurrent this will need adjusting
+    RUBY_ASSERT(prev_hash == curr_hash_and_flags || prev_hash == new_hash);
+    (void)prev_hash;
+}
+
+static VALUE
+concurrent_set_hash(const struct concurrent_set *set, VALUE key)
+{
+    VALUE hash = set->funcs->hash(key);
+    hash &= CONCURRENT_SET_HASH_MASK;
+    if (hash == 0) {
+        hash ^= CONCURRENT_SET_HASH_MASK;
+    }
+    RUBY_ASSERT(hash != 0);
+    RUBY_ASSERT(!(hash & CONCURRENT_SET_CONTINUATION_BIT));
+    return hash;
+}
+
+static void
+concurrent_set_free(void *ptr)
+{
+    struct concurrent_set *set = ptr;
+    xfree(set->entries);
+}
+
+static size_t
+concurrent_set_size(const void *ptr)
+{
+    const struct concurrent_set *set = ptr;
+    return sizeof(struct concurrent_set) +
+        (set->capacity * sizeof(struct concurrent_set_entry));
+}
+
+/* Hack: Though it would be trivial, we're intentionally avoiding WB-protecting
+ * this object. This prevents the object from aging and ensures it can always be
+ * collected in a minor GC.
+ * Longer term this deserves a better way to reclaim memory promptly.
+ */
+static void
+concurrent_set_mark(void *ptr)
+{
+    (void)ptr;
+}
+
+static const rb_data_type_t concurrent_set_type = {
+    .wrap_struct_name = "VM/concurrent_set",
+    .function = {
+        .dmark = concurrent_set_mark,
+        .dfree = concurrent_set_free,
+        .dsize = concurrent_set_size,
+    },
+    /* Hack: NOT WB_PROTECTED on purpose (see above) */
+    .flags = RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_EMBEDDABLE
+};
+
+VALUE
+rb_concurrent_set_new(const struct rb_concurrent_set_funcs *funcs, int capacity)
+{
+    struct concurrent_set *set;
+    VALUE obj = TypedData_Make_Struct(0, struct concurrent_set, &concurrent_set_type, set);
+    set->funcs = funcs;
+    set->entries = ZALLOC_N(struct concurrent_set_entry, capacity);
+    set->capacity = capacity;
+    return obj;
+}
+
+rb_atomic_t
+rb_concurrent_set_size(VALUE set_obj)
+{
+    struct concurrent_set *set = RTYPEDDATA_GET_DATA(set_obj);
+
+    return RUBY_ATOMIC_LOAD(set->size);
+}
+
+struct concurrent_set_probe {
+    int idx;
+    int d;
+    int mask;
+};
+
+static int
+concurrent_set_probe_start(struct concurrent_set_probe *probe, struct concurrent_set *set, VALUE hash)
+{
+    RUBY_ASSERT((set->capacity & (set->capacity - 1)) == 0);
+    probe->d = 0;
+    probe->mask = set->capacity - 1;
+    probe->idx = hash & probe->mask;
+    return probe->idx;
+}
+
+static int
+concurrent_set_probe_next(struct concurrent_set_probe *probe)
+{
+    probe->d++;
+    probe->idx = (probe->idx + probe->d) & probe->mask;
+    return probe->idx;
+}
+
+static void
+concurrent_set_try_resize_without_locking(VALUE old_set_obj, VALUE *set_obj_ptr)
+{
+    // Check if another thread has already resized.
+    if (rbimpl_atomic_value_load(set_obj_ptr, RBIMPL_ATOMIC_ACQUIRE) != old_set_obj) {
+        return;
+    }
+
+    struct concurrent_set *old_set = RTYPEDDATA_GET_DATA(old_set_obj);
+
+    // This may overcount by up to the number of threads concurrently attempting to insert
+    // GC may also happen between now and the set being rebuilt
+    int expected_size = rbimpl_atomic_load(&old_set->size, RBIMPL_ATOMIC_RELAXED) - old_set->deleted_entries;
+
+    // NOTE: new capacity must make sense with load factor, don't change one without checking the other.
+    struct concurrent_set_entry *old_entries = old_set->entries;
+    int old_capacity = old_set->capacity;
+    int new_capacity = old_capacity * 2;
+    if (new_capacity > expected_size * 8) {
+        new_capacity = old_capacity / 2;
+    }
+    else if (new_capacity > expected_size * 4) {
+        new_capacity = old_capacity;
+    }
+
+    // May cause GC and therefore deletes, so must happen first.
+    VALUE new_set_obj = rb_concurrent_set_new(old_set->funcs, new_capacity);
+    struct concurrent_set *new_set = RTYPEDDATA_GET_DATA(new_set_obj);
+
+    for (int i = 0; i < old_capacity; i++) {
+        struct concurrent_set_entry *old_entry = &old_entries[i];
+        VALUE key = rbimpl_atomic_value_exchange(&old_entry->key, CONCURRENT_SET_MOVED, RBIMPL_ATOMIC_ACQUIRE);
+        RUBY_ASSERT(key != CONCURRENT_SET_MOVED);
+
+        if (key < CONCURRENT_SET_SPECIAL_VALUE_COUNT) continue;
+        if (!RB_SPECIAL_CONST_P(key) && rb_objspace_garbage_object_p(key)) continue;
+
+        VALUE hash = rbimpl_atomic_value_load(&old_entry->hash, RBIMPL_ATOMIC_RELAXED) & CONCURRENT_SET_HASH_MASK;
+        RUBY_ASSERT(hash != 0);
+        RUBY_ASSERT(hash == concurrent_set_hash(old_set, key));
+
+        // Insert key into new_set.
+        struct concurrent_set_probe probe;
+        int idx = concurrent_set_probe_start(&probe, new_set, hash);
+
+        while (true) {
+            struct concurrent_set_entry *entry = &new_set->entries[idx];
+
+            if (entry->hash == CONCURRENT_SET_EMPTY) {
+                RUBY_ASSERT(entry->key == CONCURRENT_SET_EMPTY);
+
+                new_set->size++;
+                RUBY_ASSERT(new_set->size <= new_set->capacity / 2);
+
+                entry->key = key;
+                entry->hash = hash;
+                break;
+            }
+
+            RUBY_ASSERT(entry->key >= CONCURRENT_SET_SPECIAL_VALUE_COUNT);
+            entry->hash |= CONCURRENT_SET_CONTINUATION_BIT;
+            idx = concurrent_set_probe_next(&probe);
+        }
+    }
+
+    rbimpl_atomic_value_store(set_obj_ptr, new_set_obj, RBIMPL_ATOMIC_RELEASE);
+
+    RB_GC_GUARD(old_set_obj);
+}
+
+static void
+concurrent_set_try_resize(VALUE old_set_obj, VALUE *set_obj_ptr)
+{
+    RB_VM_LOCKING() {
+        concurrent_set_try_resize_without_locking(old_set_obj, set_obj_ptr);
+    }
+}
+
+VALUE
+rb_concurrent_set_find(VALUE *set_obj_ptr, VALUE key)
+{
+    RUBY_ASSERT(key >= CONCURRENT_SET_SPECIAL_VALUE_COUNT);
+
+    VALUE set_obj;
+    VALUE hash = 0;
+    struct concurrent_set *set;
+    struct concurrent_set_probe probe;
+    int idx;
+
+  retry:
+    set_obj = rbimpl_atomic_value_load(set_obj_ptr, RBIMPL_ATOMIC_ACQUIRE);
+    RUBY_ASSERT(set_obj);
+    set = RTYPEDDATA_GET_DATA(set_obj);
+
+    if (hash == 0) {
+        // We don't need to recompute the hash on every retry because it should
+        // never change.
+        hash = concurrent_set_hash(set, key);
+    }
+    RUBY_ASSERT(hash == concurrent_set_hash(set, key));
+
+    idx = concurrent_set_probe_start(&probe, set, hash);
+
+    while (true) {
+        struct concurrent_set_entry *entry = &set->entries[idx];
+        VALUE curr_hash_and_flags = rbimpl_atomic_value_load(&entry->hash, RBIMPL_ATOMIC_ACQUIRE);
+        VALUE curr_hash = curr_hash_and_flags & CONCURRENT_SET_HASH_MASK;
+        bool continuation = curr_hash_and_flags & CONCURRENT_SET_CONTINUATION_BIT;
+
+        if (curr_hash_and_flags == CONCURRENT_SET_EMPTY) {
+            return 0;
+        }
+
+        if (curr_hash != hash) {
+            if (!continuation) {
+                return 0;
+            }
+            idx = concurrent_set_probe_next(&probe);
+            continue;
+        }
+
+        VALUE curr_key = rbimpl_atomic_value_load(&entry->key, RBIMPL_ATOMIC_ACQUIRE);
+
+        switch (curr_key) {
+          case CONCURRENT_SET_EMPTY:
+            // In-progress insert: hash written but key not yet
+            break;
+          case CONCURRENT_SET_DELETED:
+            break;
+          case CONCURRENT_SET_MOVED:
+            // Wait
+            RB_VM_LOCKING();
+
+            goto retry;
+          default: {
+            if (UNLIKELY(!RB_SPECIAL_CONST_P(curr_key) && rb_objspace_garbage_object_p(curr_key))) {
+                // This is a weakref set, so after marking but before sweeping is complete we may find a matching garbage object.
+                // Skip it and let the GC pass clean it up
+                break;
+            }
+
+            if (set->funcs->cmp(key, curr_key)) {
+                // We've found a match.
+                RB_GC_GUARD(set_obj);
+                return curr_key;
+            }
+
+            if (!continuation) {
+                return 0;
+            }
+
+            break;
+          }
+        }
+
+        idx = concurrent_set_probe_next(&probe);
+    }
+}
+
+VALUE
+rb_concurrent_set_find_or_insert(VALUE *set_obj_ptr, VALUE key, void *data)
+{
+    RUBY_ASSERT(key >= CONCURRENT_SET_SPECIAL_VALUE_COUNT);
+
+    // First attempt to find
+    {
+        VALUE result = rb_concurrent_set_find(set_obj_ptr, key);
+        if (result) return result;
+    }
+
+    // First time we need to call create, and store the hash
+    VALUE set_obj = rbimpl_atomic_value_load(set_obj_ptr, RBIMPL_ATOMIC_ACQUIRE);
+    RUBY_ASSERT(set_obj);
+
+    struct concurrent_set *set = RTYPEDDATA_GET_DATA(set_obj);
+    key = set->funcs->create(key, data);
+    VALUE hash = concurrent_set_hash(set, key);
+
+    struct concurrent_set_probe probe;
+    int idx;
+
+    goto start_search;
+
+retry:
+    // On retries we only need to load the hash object
+    set_obj = rbimpl_atomic_value_load(set_obj_ptr, RBIMPL_ATOMIC_ACQUIRE);
+    RUBY_ASSERT(set_obj);
+    set = RTYPEDDATA_GET_DATA(set_obj);
+
+    RUBY_ASSERT(hash == concurrent_set_hash(set, key));
+
+start_search:
+    idx = concurrent_set_probe_start(&probe, set, hash);
+
+    while (true) {
+        struct concurrent_set_entry *entry = &set->entries[idx];
+        VALUE curr_hash_and_flags = rbimpl_atomic_value_load(&entry->hash, RBIMPL_ATOMIC_ACQUIRE);
+        VALUE curr_hash = curr_hash_and_flags & CONCURRENT_SET_HASH_MASK;
+        bool continuation = curr_hash_and_flags & CONCURRENT_SET_CONTINUATION_BIT;
+
+        if (curr_hash_and_flags == CONCURRENT_SET_EMPTY) {
+            // Reserve this slot for our hash value
+            curr_hash_and_flags = rbimpl_atomic_value_cas(&entry->hash, CONCURRENT_SET_EMPTY, hash, RBIMPL_ATOMIC_RELEASE, RBIMPL_ATOMIC_RELAXED);
+            if (curr_hash_and_flags != CONCURRENT_SET_EMPTY) {
+                // Lost race, retry same slot to check winner's hash
+                continue;
+            }
+
+            // CAS succeeded, so these are the values stored
+            curr_hash_and_flags = hash;
+            curr_hash = hash;
+
+            // Fall through to try to claim key
+        }
+
+        if (curr_hash != hash) {
+            goto probe_next;
+        }
+
+        VALUE curr_key = rbimpl_atomic_value_load(&entry->key, RBIMPL_ATOMIC_ACQUIRE);
+
+        switch (curr_key) {
+          case CONCURRENT_SET_EMPTY: {
+            rb_atomic_t prev_size = rbimpl_atomic_fetch_add(&set->size, 1, RBIMPL_ATOMIC_RELAXED);
+
+            // Load_factor reached at 75% full. ex: prev_size: 32, capacity: 64, load_factor: 50%.
+            bool load_factor_reached = (uint64_t)(prev_size * 4) >= (uint64_t)(set->capacity * 3);
+
+            if (UNLIKELY(load_factor_reached)) {
+                concurrent_set_try_resize(set_obj, set_obj_ptr);
+                goto retry;
+            }
+
+            VALUE prev_key = rbimpl_atomic_value_cas(&entry->key, CONCURRENT_SET_EMPTY, key, RBIMPL_ATOMIC_RELEASE, RBIMPL_ATOMIC_RELAXED);
+            if (prev_key == CONCURRENT_SET_EMPTY) {
+                RUBY_ASSERT(rb_concurrent_set_find(set_obj_ptr, key) == key);
+                RB_GC_GUARD(set_obj);
+                return key;
+            }
+            else {
+                // Entry was not inserted.
+                rbimpl_atomic_sub(&set->size, 1, RBIMPL_ATOMIC_RELAXED);
+
+                // Another thread won the race, try again at the same location.
+                continue;
+            }
+          }
+          case CONCURRENT_SET_DELETED:
+            break;
+          case CONCURRENT_SET_MOVED:
+            // Wait
+            RB_VM_LOCKING();
+            goto retry;
+          default:
+            // We're never GC during our search
+            // If the continuation bit wasn't set at the start of our search,
+            // any concurrent find with the same hash value would also look at
+            // this location and try to swap curr_key
+            if (UNLIKELY(!RB_SPECIAL_CONST_P(curr_key) && rb_objspace_garbage_object_p(curr_key))) {
+                if (continuation) {
+                    goto probe_next;
+                }
+                rbimpl_atomic_value_cas(&entry->key, curr_key, CONCURRENT_SET_EMPTY, RBIMPL_ATOMIC_RELEASE, RBIMPL_ATOMIC_RELAXED);
+                continue;
+            }
+
+            if (set->funcs->cmp(key, curr_key)) {
+                // We've found a live match.
+                RB_GC_GUARD(set_obj);
+
+                // We created key using set->funcs->create, but we didn't end
+                // up inserting it into the set. Free it here to prevent memory
+                // leaks.
+                if (set->funcs->free) set->funcs->free(key);
+
+                return curr_key;
+            }
+            break;
+        }
+
+      probe_next:
+        RUBY_ASSERT(curr_hash_and_flags != CONCURRENT_SET_EMPTY);
+        concurrent_set_mark_continuation(entry, curr_hash_and_flags);
+        idx = concurrent_set_probe_next(&probe);
+    }
+}
+
+static void
+concurrent_set_delete_entry_locked(struct concurrent_set *set, struct concurrent_set_entry *entry)
+{
+    ASSERT_vm_locking_with_barrier();
+
+    if (entry->hash & CONCURRENT_SET_CONTINUATION_BIT) {
+        entry->hash = CONCURRENT_SET_CONTINUATION_BIT;
+        entry->key = CONCURRENT_SET_DELETED;
+        set->deleted_entries++;
+    }
+    else {
+        entry->hash = CONCURRENT_SET_EMPTY;
+        entry->key = CONCURRENT_SET_EMPTY;
+        set->size--;
+    }
+}
+
+VALUE
+rb_concurrent_set_delete_by_identity(VALUE set_obj, VALUE key)
+{
+    ASSERT_vm_locking_with_barrier();
+
+    struct concurrent_set *set = RTYPEDDATA_GET_DATA(set_obj);
+
+    VALUE hash = concurrent_set_hash(set, key);
+
+    struct concurrent_set_probe probe;
+    int idx = concurrent_set_probe_start(&probe, set, hash);
+
+    while (true) {
+        struct concurrent_set_entry *entry = &set->entries[idx];
+        VALUE curr_key = entry->key;
+
+        switch (curr_key) {
+          case CONCURRENT_SET_EMPTY:
+            // We didn't find our entry to delete.
+            return 0;
+          case CONCURRENT_SET_DELETED:
+            break;
+          case CONCURRENT_SET_MOVED:
+            rb_bug("rb_concurrent_set_delete_by_identity: moved entry");
+            break;
+          default:
+            if (key == curr_key) {
+                RUBY_ASSERT((entry->hash & CONCURRENT_SET_HASH_MASK) == hash);
+                concurrent_set_delete_entry_locked(set, entry);
+                return curr_key;
+            }
+            break;
+        }
+
+        idx = concurrent_set_probe_next(&probe);
+    }
+}
+
+void
+rb_concurrent_set_foreach_with_replace(VALUE set_obj, int (*callback)(VALUE *key, void *data), void *data)
+{
+    ASSERT_vm_locking_with_barrier();
+
+    struct concurrent_set *set = RTYPEDDATA_GET_DATA(set_obj);
+
+    for (unsigned int i = 0; i < set->capacity; i++) {
+        struct concurrent_set_entry *entry = &set->entries[i];
+        VALUE key = entry->key;
+
+        switch (key) {
+          case CONCURRENT_SET_EMPTY:
+          case CONCURRENT_SET_DELETED:
+            continue;
+          case CONCURRENT_SET_MOVED:
+            rb_bug("rb_concurrent_set_foreach_with_replace: moved entry");
+            break;
+          default: {
+            int ret = callback(&entry->key, data);
+            switch (ret) {
+              case ST_STOP:
+                return;
+              case ST_DELETE:
+                concurrent_set_delete_entry_locked(set, entry);
+                break;
+            }
+            break;
+          }
+        }
+    }
+}
diff --git a/configure.ac b/configure.ac
index ca234e3c90..4e7367804d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,49 +9,69 @@ tooldir="$srcdir/tool"
 
 AC_DISABLE_OPTION_CHECKING
 
-m4_include([tool/m4/_colorize_result_prepare.m4])dnl
-m4_include([tool/m4/ac_msg_result.m4])dnl
-m4_include([tool/m4/colorize_result.m4])dnl
-m4_include([tool/m4/ruby_append_option.m4])dnl
-m4_include([tool/m4/ruby_append_options.m4])dnl
-m4_include([tool/m4/ruby_check_builtin_func.m4])dnl
-m4_include([tool/m4/ruby_check_builtin_setjmp.m4])dnl
-m4_include([tool/m4/ruby_check_printf_prefix.m4])dnl
-m4_include([tool/m4/ruby_check_setjmp.m4])dnl
-m4_include([tool/m4/ruby_check_signedness.m4])dnl
-m4_include([tool/m4/ruby_check_sizeof.m4])dnl
-m4_include([tool/m4/ruby_check_sysconf.m4])dnl
-m4_include([tool/m4/ruby_cppoutfile.m4])dnl
-m4_include([tool/m4/ruby_decl_attribute.m4])dnl
-m4_include([tool/m4/ruby_default_arch.m4])dnl
-m4_include([tool/m4/ruby_define_if.m4])dnl
-m4_include([tool/m4/ruby_defint.m4])dnl
-m4_include([tool/m4/ruby_dtrace_available.m4])dnl
-m4_include([tool/m4/ruby_dtrace_postprocess.m4])dnl
-m4_include([tool/m4/ruby_func_attribute.m4])dnl
-m4_include([tool/m4/ruby_mingw32.m4])dnl
-m4_include([tool/m4/ruby_prepend_option.m4])dnl
-m4_include([tool/m4/ruby_prog_gnu_ld.m4])dnl
-m4_include([tool/m4/ruby_prog_makedirs.m4])dnl
-m4_include([tool/m4/ruby_replace_funcs.m4])dnl
-m4_include([tool/m4/ruby_replace_type.m4])dnl
-m4_include([tool/m4/ruby_require_funcs.m4])dnl
-m4_include([tool/m4/ruby_rm_recursive.m4])dnl
-m4_include([tool/m4/ruby_setjmp_type.m4])dnl
-m4_include([tool/m4/ruby_stack_grow_direction.m4])dnl
-m4_include([tool/m4/ruby_thread.m4])dnl
-m4_include([tool/m4/ruby_try_cflags.m4])dnl
-m4_include([tool/m4/ruby_try_cxxflags.m4])dnl
-m4_include([tool/m4/ruby_try_ldflags.m4])dnl
-m4_include([tool/m4/ruby_universal_arch.m4])dnl
-m4_include([tool/m4/ruby_wasm_tools.m4])dnl
-m4_include([tool/m4/ruby_werror_flag.m4])dnl
+m4_define([RUBY_M4_INCLUDED], [])dnl
+AC_DEFUN([RUBY_M4_INCLUDE], [m4_include([tool/m4/$1])dnl
+  m4_append([RUBY_M4_INCLUDED], [ \
+	$(tooldir)/m4/$1])dnl
+])
+RUBY_M4_INCLUDE([_colorize_result_prepare.m4])dnl
+RUBY_M4_INCLUDE([ac_msg_result.m4])dnl
+RUBY_M4_INCLUDE([colorize_result.m4])dnl
+RUBY_M4_INCLUDE([ruby_append_option.m4])dnl
+RUBY_M4_INCLUDE([ruby_append_options.m4])dnl
+RUBY_M4_INCLUDE([ruby_check_builtin_func.m4])dnl
+RUBY_M4_INCLUDE([ruby_check_builtin_overflow.m4])dnl
+RUBY_M4_INCLUDE([ruby_check_builtin_setjmp.m4])dnl
+RUBY_M4_INCLUDE([ruby_check_header.m4])dnl
+RUBY_M4_INCLUDE([ruby_check_printf_prefix.m4])dnl
+RUBY_M4_INCLUDE([ruby_check_setjmp.m4])dnl
+RUBY_M4_INCLUDE([ruby_check_signedness.m4])dnl
+RUBY_M4_INCLUDE([ruby_check_sizeof.m4])dnl
+RUBY_M4_INCLUDE([ruby_check_sysconf.m4])dnl
+RUBY_M4_INCLUDE([ruby_cppoutfile.m4])dnl
+RUBY_M4_INCLUDE([ruby_decl_attribute.m4])dnl
+RUBY_M4_INCLUDE([ruby_default_arch.m4])dnl
+RUBY_M4_INCLUDE([ruby_define_if.m4])dnl
+RUBY_M4_INCLUDE([ruby_defint.m4])dnl
+RUBY_M4_INCLUDE([ruby_dtrace_available.m4])dnl
+RUBY_M4_INCLUDE([ruby_dtrace_postprocess.m4])dnl
+RUBY_M4_INCLUDE([ruby_func_attribute.m4])dnl
+RUBY_M4_INCLUDE([ruby_mingw32.m4])dnl
+RUBY_M4_INCLUDE([ruby_prepend_option.m4])dnl
+RUBY_M4_INCLUDE([ruby_prog_gnu_ld.m4])dnl
+RUBY_M4_INCLUDE([ruby_prog_makedirs.m4])dnl
+RUBY_M4_INCLUDE([ruby_replace_funcs.m4])dnl
+RUBY_M4_INCLUDE([ruby_replace_type.m4])dnl
+RUBY_M4_INCLUDE([ruby_require_funcs.m4])dnl
+RUBY_M4_INCLUDE([ruby_rm_recursive.m4])dnl
+RUBY_M4_INCLUDE([ruby_setjmp_type.m4])dnl
+RUBY_M4_INCLUDE([ruby_modular_gc.m4])dnl
+RUBY_M4_INCLUDE([ruby_stack_grow_direction.m4])dnl
+RUBY_M4_INCLUDE([ruby_thread.m4])dnl
+RUBY_M4_INCLUDE([ruby_try_cflags.m4])dnl
+RUBY_M4_INCLUDE([ruby_try_cxxflags.m4])dnl
+RUBY_M4_INCLUDE([ruby_try_ldflags.m4])dnl
+RUBY_M4_INCLUDE([ruby_universal_arch.m4])dnl
+RUBY_M4_INCLUDE([ruby_wasm_tools.m4])dnl
+RUBY_M4_INCLUDE([ruby_werror_flag.m4])dnl
+
+AS_IF([test "x${GITHUB_ACTIONS}" = xtrue],
+[AC_REQUIRE([_COLORIZE_RESULT_PREPARE])dnl
+dnl 93(bright yellow) is copied from .github/workflows/mingw.yml
+    begin_group() { AS_ECHO(["::group::@<:@93m$[]1@<:@m"]);}
+    end_group() { AS_ECHO(["::endgroup::"]);}
+],
+[dnl
+    begin_group() { :;}
+    end_group() { :;}
+])
 
 AC_ARG_VAR([cflags], [additional CFLAGS (ignored when CFLAGS is given)])dnl
 AC_ARG_VAR([cppflags], [additional CPPFLAGS (ignored when CPPFLAGS is given)])dnl
 AC_ARG_VAR([cxxflags], [additional CXXFLAGS (ignored when CXXFLAGS is given)])dnl
+AC_ARG_VAR([rustc_flags], [additional RUSTC_FLAGS])dnl
 
-: "environment section" && {
+[begin]_group "environment section" && {
 HAVE_BASERUBY=yes
 BASERUBY_VERSION=
 AC_ARG_WITH(baseruby,
@@ -63,21 +83,30 @@ AC_ARG_WITH(baseruby,
 	],
 	[
 		AC_PATH_PROG([BASERUBY], [ruby], [false])
+		HAVE_BASERUBY=
 	])
-AS_IF([test "$HAVE_BASERUBY" != no -a "`RUBYOPT=- $BASERUBY --disable=gems -e 'print 42 if RUBY_VERSION > "2.2"' 2>/dev/null`" = 42], [
+AS_IF([test "$HAVE_BASERUBY" = no], [
+    # --without-baseruby
+], [error=`RUBYOPT=- $BASERUBY --disable=gems "${tooldir}/missing-baseruby.bat" --verbose 2>&1`], [
+    HAVE_BASERUBY=yes
+], [test "$HAVE_BASERUBY" = ""], [ # no --with-baseruby option
+    AC_MSG_WARN($error)            # just warn and continue
+    HAVE_BASERUBY=no
+], [                               # the ruby given by --with-baseruby is too old
+    AC_MSG_ERROR($error)           # bail out
+])
+AS_IF([test "${HAVE_BASERUBY:=no}" != no], [
     AS_CASE(["$build_os"], [mingw*], [
         # Can MSys shell run a command with a drive letter?
         RUBYOPT=- `cygpath -ma "$BASERUBY"` --disable=gems -e exit 2>/dev/null || HAVE_BASERUBY=no
     ])
-    BASERUBY="$BASERUBY --disable=gems"
+    RUBY_APPEND_OPTION(BASERUBY, "--disable=gems")
     BASERUBY_VERSION=`$BASERUBY -v`
     $BASERUBY -C "$srcdir" tool/downloader.rb -d tool -e gnu config.guess config.sub >&AS_MESSAGE_FD
-], [
-    HAVE_BASERUBY=no
 ])
 AS_IF([test "$HAVE_BASERUBY" = no], [
     AS_IF([test "$cross_compiling" = yes], [AC_MSG_ERROR([executable host ruby is required for cross-compiling])])
-    BASERUBY="echo executable host ruby is required.  use --with-baseruby option.; false"
+    BASERUBY=${tooldir}/missing-baseruby.bat
 ])
 AC_SUBST(BASERUBY)
 AC_SUBST(HAVE_BASERUBY)
@@ -87,10 +116,18 @@ HAVE_GIT=yes
 AC_ARG_WITH(git,
 	AS_HELP_STRING([--without-git], [never use git]),
 	[AS_CASE([$withval],
-	    [no],  [GIT=never-use HAVE_GIT=no],
+	    [no],  [HAVE_GIT=no],
 	    [yes], [],
 	    [GIT=$withval])])
-AS_IF([test x"$HAVE_GIT" = xyes], [command -v "$GIT" > /dev/null || HAVE_GIT=no])
+{
+    test x"$HAVE_GIT" = xyes &&
+    command -v "$GIT" > /dev/null &&
+    # `git -C`: 1.8.5
+    # `git log --no-show-signature`: 2.10.0
+    AS_CASE([`$GIT -C . --version 2> /dev/null | sed 's/.* //'`],
+    [0.*|1.*|2.@<:@0-9@:>@.*], [false],
+    [true])
+} || HAVE_GIT=no GIT=never-use
 AC_SUBST(GIT)
 AC_SUBST(HAVE_GIT)
 
@@ -129,12 +166,16 @@ dnl checks for alternative programs
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST
 AC_CANONICAL_TARGET
+AC_SUBST(config_target, $target)
 AS_CASE(["$target_cpu-$target_os"],
     [aarch64-darwin*], [
         target_cpu=arm64
-        AS_CASE(["$target_vendor"], [unknown], [target_vendor=apple target=${target/-unknown-/-apple-}])
-        target="${target/aarch64/arm64}"
-        target_alias="${target_alias/aarch64/arm64}"
+        AS_CASE(["$target_vendor"], [unknown], [
+            target_vendor=apple
+            target=${target%%-unknown-*}-apple-${target@%:@*-unknown-}
+        ])
+        target="arm64-${target@%:@aarch64-}"
+        AS_IF([test -n "$target_alias"], [target_alias="arm64-${target_alias@%:@aarch64-}"])
     ])
 
 AC_ARG_PROGRAM
@@ -184,7 +225,7 @@ AC_ARG_VAR([STRIP],    [Strip command])
 set rb_dummy ${CC}
 rb_CC=$2
 AC_DEFUN([RUBY_CHECK_PROG_FOR_CC], [
-    rb_prog=`echo "${rb_CC}" | sed "$2"`
+    rb_prog=`echo "${rb_CC}" | sed ["s:$2\([^/]*\)$:$3\1:"]`
     AC_CHECK_PROG([$1], [$rb_prog], [$rb_prog])
 ])
 AS_CASE(["/${rb_CC} "],
@@ -195,30 +236,38 @@ AS_CASE(["/${rb_CC} "],
 [*icc*],              [
     # Intel C++ has interprocedural optimizations.  It tends to come with its
     # own linker etc.
-    RUBY_CHECK_PROG_FOR_CC([AR],      [s/icc/xiar/])
-    RUBY_CHECK_PROG_FOR_CC([CXX],     [s/icc/icpc/])
-    RUBY_CHECK_PROG_FOR_CC([LD],      [s/icc/xild/])
+    RUBY_CHECK_PROG_FOR_CC([AR],      [icc], [xiar])
+    RUBY_CHECK_PROG_FOR_CC([CXX],     [icc], [icpc])
+    RUBY_CHECK_PROG_FOR_CC([LD],      [icc], [xild])
 ],
 [*gcc*],              [
     # Ditto for GCC.
-    RUBY_CHECK_PROG_FOR_CC([LD],      [s/gcc/ld/])
-    RUBY_CHECK_PROG_FOR_CC([AR],      [s/gcc/gcc-ar/])
-    RUBY_CHECK_PROG_FOR_CC([CXX],     [s/gcc/g++/])
-    RUBY_CHECK_PROG_FOR_CC([NM],      [s/gcc/gcc-nm/])
-    RUBY_CHECK_PROG_FOR_CC([RANLIB],  [s/gcc/gcc-ranlib/])
+    RUBY_CHECK_PROG_FOR_CC([LD],      [gcc], [ld])
+    RUBY_CHECK_PROG_FOR_CC([AR],      [gcc], [gcc-ar])
+    RUBY_CHECK_PROG_FOR_CC([CXX],     [gcc], [g++])
+    RUBY_CHECK_PROG_FOR_CC([NM],      [gcc], [gcc-nm])
+    RUBY_CHECK_PROG_FOR_CC([RANLIB],  [gcc], [gcc-ranlib])
 ],
 [*clang*],            [
     # Ditto 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 ?
-    RUBY_CHECK_PROG_FOR_CC([AR],      [s/clang/llvm-ar/])
-#   RUBY_CHECK_PROG_FOR_CC([AS],      [s/clang/llvm-as/])
-    RUBY_CHECK_PROG_FOR_CC([CXX],     [s/clang/clang++/])
-    RUBY_CHECK_PROG_FOR_CC([NM],      [s/clang/llvm-nm/])
-    RUBY_CHECK_PROG_FOR_CC([OBJCOPY], [s/clang/llvm-objcopy/])
-    RUBY_CHECK_PROG_FOR_CC([OBJDUMP], [s/clang/llvm-objdump/])
-    RUBY_CHECK_PROG_FOR_CC([RANLIB],  [s/clang/llvm-ranlib/])
-    RUBY_CHECK_PROG_FOR_CC([STRIP],   [s/clang/llvm-strip/])
+
+    # Xcode has its own version tools that may be incompatible with
+    # genuine LLVM tools, use the tools in the same directory.
+
+    AS_IF([$rb_CC -E -dM -xc - < /dev/null | grep -F __apple_build_version__ > /dev/null],
+          [llvm_prefix=], [llvm_prefix=llvm-])
+    # AC_PREPROC_IFELSE cannot be used before AC_USE_SYSTEM_EXTENSIONS
+
+    RUBY_CHECK_PROG_FOR_CC([LD],      [clang], [ld]) # ... maybe try lld ?
+    RUBY_CHECK_PROG_FOR_CC([AR],      [clang], [${llvm_prefix}ar])
+#   RUBY_CHECK_PROG_FOR_CC([AS],      [clang], [${llvm_prefix}as])
+    RUBY_CHECK_PROG_FOR_CC([CXX],     [clang], [clang++])
+    RUBY_CHECK_PROG_FOR_CC([NM],      [clang], [${llvm_prefix}nm])
+    RUBY_CHECK_PROG_FOR_CC([OBJCOPY], [clang], [${llvm_prefix}objcopy])
+    RUBY_CHECK_PROG_FOR_CC([OBJDUMP], [clang], [${llvm_prefix}objdump])
+    RUBY_CHECK_PROG_FOR_CC([RANLIB],  [clang], [${llvm_prefix}ranlib])
+    RUBY_CHECK_PROG_FOR_CC([STRIP],   [clang], [${llvm_prefix}strip])
 ])
 AS_UNSET(rb_CC)
 AS_UNSET(rb_dummy)
@@ -231,7 +280,9 @@ AS_CASE(["${build_os}"],
     AC_PATH_TOOL([NM], [nm], [/usr/ccs/bin/nm], [/usr/ccs/bin:$PATH])
 ])
 AS_CASE(["${target_os}"],
-[cygwin*|msys*|mingw*], [
+[cygwin*|msys*|mingw*|darwin*], [
+    ac_ct_OBJCOPY=":"
+    ac_cv_prog_OBJCOPY=":"
     ac_cv_prog_ac_ct_OBJCOPY=":"
 ])
 
@@ -250,10 +301,16 @@ 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([OBJCOPY], [gobjcopy objcopy], [:])
 AC_CHECK_TOOLS([OBJDUMP], [gobjdump objdump])
 AC_CHECK_TOOLS([STRIP],   [gstrip strip], [:])
 
+FIRSTMAKEFILE=""
+
+# nm errors with Rust's LLVM bitcode when Rust uses a newer LLVM version than nm.
+# In case we're working with llvm-nm, tell it to not worry about the bitcode.
+AS_IF([${NM} --help 2>&1 | grep -q 'llvm-bc'], [NM="$NM --no-llvm-bc"])
+
 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)
 
@@ -326,7 +383,7 @@ test -z "$warnflags" ||
 AS_IF([test -z "${CFLAGS+set}"], [
     cflags=`echo " $cflags " | sed "$cflagspat;s/^ *//;s/ *$//"`
     orig_cflags="$cflags"
-    cflags="$cflags "'${optflags} ${debugflags} ${warnflags}'
+    cflags='${hardenflags} '"$cflags "'${optflags} ${debugflags} ${warnflags}'
 ])
 dnl AS_IF([test -z "${CXXFLAGS+set}"], [
 dnl     cxxflags=`echo " $cxxflags " | sed "$cflagspat;s/^ *//;s/ *$//"`
@@ -362,12 +419,6 @@ AS_CASE(["$target_os"],
 	[AC_MSG_RESULT(yes)],
 	[AC_MSG_RESULT(no)
 	AC_MSG_ERROR([Unsupported OS X version is required])])
-    AC_CACHE_CHECK([if thread-local storage is supported], [rb_cv_tls_supported],
-	[AC_LINK_IFELSE([AC_LANG_PROGRAM([[int __thread conftest;]])],
-	    [rb_cv_tls_supported=yes],
-	    [rb_cv_tls_supported=no])])
-    AS_IF([test x"$rb_cv_tls_supported" != xyes],
-	[AC_DEFINE(RB_THREAD_LOCAL_SPECIFIER_IS_UNSUPPORTED)])
 ])
 
 RUBY_MINGW32
@@ -401,33 +452,26 @@ 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*.*], [
+  [darwin*], [
+    # gcc 13 warns duplicate -l options, which are added by the
+    # default spec.
     # Xcode linker warns for deprecated architecture and wrongly
     # installed TBD files.
-    CC_WRAPPER=""
+    AC_MSG_CHECKING(for $CC linker warning)
+    suppress_ld_waring=no
     echo 'int main(void) {return 0;}' > conftest.c
     AS_IF([$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"
+	   grep \
+	      -e '^ld: warning: ignoring duplicate libraries:' \
+	      -e '^ld: warning: text-based stub file' \
+	      -e '^ld: warning: -multiply_defined is obsolete' \
+	   >/dev/null], [
+	suppress_ld_waring=yes
     ])
     rm -fr conftest*
+    test $suppress_ld_waring = yes && warnflags="${warnflags:+${warnflags} }-Wl,-w"
+    AC_MSG_RESULT($suppress_ld_waring)
   ])
 AS_CASE(["$target_os"],
   [wasi*], [
@@ -437,6 +481,8 @@ AS_CASE(["$target_os"],
     # so wrap clang to insert our fake wasm-opt, which does nothing, in PATH.
     CC_WRAPPER=`cd -P "${tooldir}" && pwd`/wasm-clangw
     CC="$CC_WRAPPER $CC"
+
+    FIRSTMAKEFILE=GNUmakefile:wasm/GNUmakefile.in
   ])
 
 cc_version=
@@ -454,8 +500,8 @@ AC_SUBST(CC_VERSION_MESSAGE, $cc_version_message)
 : ${DLDFLAGS="$LDFLAGS"}
 
 RUBY_UNIVERSAL_ARCH
-AS_IF([test "$target_cpu" != "$host_cpu" -a "$GCC" = yes -a "$cross_compiling" = no -a "${universal_binary:-no}" = no], [
-    RUBY_DEFAULT_ARCH("$target_cpu")
+AS_IF([test "$target_cpu" != "$host_cpu" -a "$GCC" = yes -a "${universal_binary:-no}" = no], [
+    RUBY_DEFAULT_ARCH($target_cpu)
 ])
 host_os=$target_os
 host_vendor=$target_vendor
@@ -468,7 +514,6 @@ AC_CACHE_CHECK([for $AR flags], [rb_cv_arflags], [
 	[rb_cv_arflags=rcD], [rb_cv_arflags=rcu])
 ])
 AC_SUBST(ARFLAGS, ["$rb_cv_arflags "])
-AC_SUBST(ASFLAGS)
 
 AS_CASE(["$target_os"],
 [cygwin*|msys*|mingw*], [
@@ -479,6 +524,8 @@ AS_CASE(["$target_os"],
     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${target_alias}"])
+    # cygwin/GNUmakefile.in is not exclusively for cygwin.
+    FIRSTMAKEFILE=GNUmakefile:cygwin/GNUmakefile.in
     AS_CASE(["$target_os"],
     [mingw*], [
 	test "$rb_cv_msvcrt" = "" && unset rb_cv_msvcrt
@@ -520,7 +567,9 @@ AS_IF([test "$cross_compiling:$ac_cv_prog_DTRACE" = no: -a -n "$ac_tool_prefix"]
 AC_CHECK_PROGS(DOT, dot)
 AC_CHECK_PROGS(DOXYGEN, doxygen)
 
+tool_warned=$ac_tool_warned ac_tool_warned=no
 AC_CHECK_TOOL(PKG_CONFIG, pkg-config)
+ac_tool_warned=$tool_warned
 AS_IF([test -z "$PKG_CONFIG"], [],
 ["$PKG_CONFIG" --print-errors --version > /dev/null 2>&1], [],
 [
@@ -578,9 +627,25 @@ AS_IF([test -f conf$$.dir/src/cdcmd], [
 rm -fr conf$$.dir
 AC_MSG_RESULT([$CHDIR])
 AC_SUBST(CHDIR)
+
+AS_CASE(["$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)
+])
 }
 
-: "compiler section" && {
+[begin]_group "compiler section" && {
 RUBY_WERROR_FLAG([
     AC_MSG_CHECKING([whether CFLAGS is valid])
     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
@@ -639,9 +704,9 @@ RUBY_WERROR_FLAG([
         [enable_rpath=$enableval], [enable_rpath="$rb_cv_binary_elf"])
 
     AS_IF([test "$enable_rpath:${RPATHFLAG}" = yes:], [
-        RPATHFLAG="${rpathflag:+ ${rpathflag}%1\$-s}"
+        RPATHFLAG="${rpathflag:+${rpathflag}%1\$-s}"
     ])
-    AS_CASE([${RPATHFLAG}],[*'%1$'*],[: ${LIBPATHFLAG=' -L%1$-s'}],[: ${LIBPATHFLAG=' -L%s'}])
+    AS_CASE([${RPATHFLAG}],[*'%1$'*],[: ${LIBPATHFLAG='-L%1$-s'}],[: ${LIBPATHFLAG='-L%s'}])
 }
 
 RUBY_TRY_LDFLAGS(-fdeclspec, [fdeclspec=yes], [fdeclspec=no])
@@ -675,6 +740,10 @@ AS_CASE(["$GCC:${warnflags+set}:${extra_warnflags:+set}:"],
     AS_IF([test $gcc_major -le 6], [
 	extra_warnflags="$extra_warnflags -Wno-maybe-uninitialized"
     ])
+    AS_CASE([ $CFLAGS ], [*" -save-temps="*|*" -save-temps "*], [], [
+	extra_warnflags="$extra_warnflags -Werror=misleading-indentation"
+    ])
+
     # ICC doesn't support -Werror=
     AS_IF([test $icc_version -gt 0], [
 	particular_werror_flags=no
@@ -686,7 +755,6 @@ AS_CASE(["$GCC:${warnflags+set}:${extra_warnflags:+set}:"],
 		 -Werror=duplicated-cond \
 		 -Werror=implicit-function-declaration \
 		 -Werror=implicit-int \
-		 -Werror=misleading-indentation \
 		 -Werror=pointer-arith \
 		 -Werror=shorten-64-to-32 \
 		 -Werror=write-strings \
@@ -786,12 +854,10 @@ AS_IF([test "$GCC" = yes], [
 		  [fortify_source=$enableval])
     AS_IF([test "x$fortify_source" != xno], [
         RUBY_TRY_CFLAGS([$optflags -D_FORTIFY_SOURCE=2],
-                        [RUBY_APPEND_OPTION(XCFLAGS, -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2)], [],
+                        [RUBY_PREPEND_OPTION(hardenflags, -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2)], [],
                         [@%:@include <stdio.h>])
     ])
 
-    : ${MJIT_HEADER_FLAGS='-P -dD'}
-
     # -fstack-protector
     AS_CASE(["$target_os"],
     [emscripten*|wasi*], [
@@ -809,18 +875,45 @@ AS_IF([test "$GCC" = yes], [
     AC_MSG_CHECKING([for -fstack-protector])
     AC_MSG_RESULT(["$stack_protector"])
     AS_CASE(["$stack_protector"], [-*], [
-	RUBY_APPEND_OPTION(XCFLAGS, $stack_protector)
-	RUBY_APPEND_OPTION(XLDFLAGS, $stack_protector)
-	RUBY_APPEND_OPTION(LDFLAGS, $stack_protector)
+        RUBY_PREPEND_OPTION(hardenflags, $stack_protector)
+        RUBY_APPEND_OPTION(XLDFLAGS, $stack_protector)
+        RUBY_APPEND_OPTION(LDFLAGS, $stack_protector)
     ])
 
     # aarch64 branch protection
-    AS_CASE(["$target_cpu"], [aarch64], [
-	AS_FOR(option, opt, [-mbranch-protection=pac-ret -msign-return-address=all], [
-            RUBY_TRY_CFLAGS(option, [branch_protection=yes], [branch_protection=no])
-            AS_IF([test "x$branch_protection" = xyes], [
-                RUBY_APPEND_OPTION(XCFLAGS, option)
-                break
+    AS_CASE(["$target_cpu"], [aarch64|arm64], [
+        # LLVM libunwind is not actually capable of unwinding code compiled with pointer
+        # authentication unless it's built without LIBUNWIND_ENABLE_CROSS_UNWINDING (see
+        # https://github.com/llvm/llvm-project/blob/8e35c86977ce5529a9387657321ac9fefcdae5b5/libunwind/src/DwarfInstructions.hpp#L294)
+        # It seems that macOS ships LLVM compiled this way.
+        # Detect this and disable automatic insertion of pac-ret flags in that case, since we assume
+        # that reliable backtraces are more important than hardening flags.
+        AC_MSG_CHECKING([for a broken LLVM libunwind that cannot unwind code with RA signing])
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+            @%:@include <libunwind.h>
+            int foo = UNW_ECROSSRASIGNING;
+            ]])],
+            # If compilation succeeds, that means we a) had libunwind, and b) it was NOT native only
+            [rb_cv_libunwind_broken_ra_signing=yes],
+            # if compilation fails, that means we either a) do not have libunwind, or b) have it in
+            # native only mode (which is good!)
+            [rb_cv_libunwind_broken_ra_signing=no]
+        )
+        AC_MSG_RESULT(["$rb_cv_libunwind_broken_ra_signing"])
+        AS_IF([test "x$rb_cv_libunwind_broken_ra_signing" = "xno"], [
+            AS_FOR(option, opt, [-mbranch-protection=pac-ret -msign-return-address=all], [
+                # Try these flags in the _prepended_ position - i.e. we want to try building a program
+                # with CFLAGS="-mbranch-protection=pac-ret $CFLAGS". If the builder has provided different
+                # branch protection flags in CFLAGS, we don't want to overwrite those. We just want to
+                # find some branch protection flags which work if none were provided.
+                RUBY_TRY_CFLAGS_PREPEND(option, [branch_protection=yes], [branch_protection=no])
+                AS_IF([test "x$branch_protection" = xyes], [
+                    # _prepend_ the options to CFLAGS, so that user-provided flags will overwrite them.
+                    # These CFLAGS are used during the configure script to compile further test programs;
+                    # however, $harden_flags is prepended separately to CFLAGS at the end of the script.
+                    RUBY_PREPEND_OPTION(hardenflags, $opt)
+                    break
+                ])
             ])
         ])
     ])
@@ -876,9 +969,9 @@ AS_IF([test "$GCC" = yes], [
     # 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 "${debugflags+set}" || {RUBY_TRY_CFLAGS(-g3, [debugflags=-g3])}
+    test "${debugflags+set}" || {RUBY_TRY_LDFLAGS(-ggdb3, [debugflags=-ggdb3])}
+    test "${debugflags+set}" || {RUBY_TRY_LDFLAGS(-ggdb, [debugflags=-ggdb])}
+    test "${debugflags+set}" || {RUBY_TRY_LDFLAGS(-g3, [debugflags=-g3])}
 ])
 test $ac_cv_prog_cc_g = yes && : ${debugflags=-g}
 
@@ -895,7 +988,6 @@ AS_IF([test "$GCC" = yes], [
     ], [
 	RUBY_TRY_LDFLAGS([-Wl,-unexported_symbol,_Init_*], [visibility_option=ld], [visibility_option=no])
     ])
-    test "$visibility_option" = no || OBJCOPY=:
 ])
 
 AS_IF([test "$GCC" = yes], [
@@ -951,22 +1043,31 @@ AC_ARG_WITH(opt-dir,
 	[OPT_DIR="${OPT_DIR:+$OPT_DIR$PATH_SEPARATOR}$withval"], [])
 
 AS_IF([test "x$OPT_DIR" != x], [
+    save_IFS="$IFS" IFS="$PATH_SEPARATOR" val= PWD=
+    for dir in $OPT_DIR; do
+        test -z "$dir" && continue
+        dir=`eval $CHDIR '"$dir"' 2>/dev/null && pwd` || continue
+        val="${val:+$val$PATH_SEPARATOR}$dir"
+    done
+    IFS="$save_IFS" OPT_DIR="$val"
+    unset PWD
+    unset save_IFS
     val=`IFS="$PATH_SEPARATOR"
         for dir in $OPT_DIR; do
-            test -z "$dir" && continue
             echo x ${LIBPATHFLAG} ${RPATHFLAG} |
             sed "s/^x *//;s${IFS}"'%1\\$-s'"${IFS}${dir}/lib${IFS}g;s${IFS}%s${IFS}${dir}/lib${IFS}g"
         done | tr '\012' ' ' | sed 's/ *$//'`
     LDFLAGS="${LDFLAGS:+$LDFLAGS }$val"
     DLDFLAGS="${DLDFLAGS:+$DLDFLAGS }$val"
     LDFLAGS_OPTDIR="$val"
-    CPPFLAGS="${CPPFLAGS:+$CPPFLAGS }"`echo "$OPT_DIR" | tr "${PATH_SEPARATOR}" '\012' |
+    INCFLAGS="${INCFLAGS:+$INCFLAGS }"`echo "$OPT_DIR" | tr "${PATH_SEPARATOR}" '\012' |
         sed '/^$/d;s|^|-I|;s|$|/include|' | tr '\012' ' ' | sed 's/ *$//'`
 ])
+AC_SUBST(incflags, "$INCFLAGS")
 
 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,
@@ -976,8 +1077,9 @@ AC_CACHE_CHECK([whether compiler has statement and declarations in expressions],
 AS_IF([test "$rb_cv_have_stmt_and_decl_in_expr" = yes], [
   AC_DEFINE(HAVE_STMT_AND_DECL_IN_EXPR)
 ])
+}
 
-: "header and library section" && {
+[begin]_group "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="$withval"], [with_winnt_ver="0x0600"])
@@ -1032,7 +1134,6 @@ AS_CASE(["$target_os"],
 		AS_IF([test $gcc_major -eq 4 -a $gcc_minor -lt 3], [
 		    ac_cv_func___builtin_setjmp=no
 		])
-		with_setjmp_type=sigsetjmp # to hijack SIGCHLD handler
 		AC_CACHE_CHECK(for broken crypt with 8bit chars, rb_cv_broken_crypt,
 		    [AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include <stdio.h>
@@ -1080,21 +1181,23 @@ main()
 		])
 		POSTLINK=""
 		AC_CHECK_PROGS(codesign, codesign)
-		AC_CHECK_PROGS(dsymutil, dsymutil)
+		dsymutils=
+		AS_CASE("$CC_NO_WRAPPER", [gcc*-1[[3-9]]], [
+		    dsymutils=${CC_NO_WRAPPER@%:@gcc}
+		    dsymutils=dsymutil${dsymutils%-1*}
+		    dsymutils="$dsymutils-19 $dsymutils-18 $dsymutils-17"
+		])
+		AC_CHECK_PROGS(dsymutil, $dsymutils dsymutil)
 		AS_IF([test -n "$codesign"], [
-		    POSTLINK="{ test -z '\$(RUBY_CODESIGN)' || $codesign -s '\$(RUBY_CODESIGN)' -f \$@; }${POSTLINK:+; $POSTLINK}"
+		    POSTLINK="{ test -z '\$(RUBY_CODESIGN)' || $codesign -s '\$(RUBY_CODESIGN)' \$@; }${POSTLINK:+; $POSTLINK}"
 		])
 		AS_IF([test -n "$dsymutil"], [
-		    POSTLINK="$dsymutil \$@${POSTLINK:+; $POSTLINK}"
-		])
-		AS_IF([test -n "${POSTLINK}"], [
-		    LINK_SO="$LINK_SO
-\$(POSTLINK)"
+		    POSTLINK="$dsymutil \$@ 2>/dev/null${POSTLINK:+; $POSTLINK}"
 		])
 		AC_CHECK_HEADERS(crt_externs.h, [], [], [
 		    #include <crt_externs.h>
 		])
-		cleanlibs='$(TARGET_SO).dSYM'
+		cleanlibs='$(TARGET_SO:=.dSYM)'
 		],
 [solaris*], [	LIBS="-lm $LIBS"
 		ac_cv_func_vfork=no
@@ -1165,6 +1268,11 @@ main()
 		ac_cv_header_sys_time_h=no
 		ac_cv_header_sys_times_h=no
 		ac_cv_header_sys_socket_h=no
+		ac_cv_func_chown=yes
+		ac_cv_func_getegid=yes
+		ac_cv_func_geteuid=yes
+		ac_cv_func_getgid=yes
+		ac_cv_func_getuid=yes
 		ac_cv_func_execv=yes
 		ac_cv_func_lstat=yes
 		ac_cv_func_times=yes
@@ -1177,6 +1285,8 @@ main()
 		ac_cv_func_readlink=yes
 		ac_cv_func_shutdown=yes
 		ac_cv_func_symlink=yes
+		ac_cv_func_clock_getres=yes
+		ac_cv_func_clock_gettime=yes
 		ac_cv_lib_crypt_crypt=no
 		ac_cv_func_getpgrp_void=no
 		ac_cv_func_memcmp_working=yes
@@ -1187,19 +1297,18 @@ main()
 		ac_cv_func_gmtime_r=yes
 		rb_cv_large_fd_select=yes
 		ac_cv_type_struct_timeval=yes
-                ac_cv_func_clock_gettime=yes
-                ac_cv_func_clock_getres=yes
 		ac_cv_func_malloc_usable_size=no
 		ac_cv_type_off_t=yes
 		ac_cv_sizeof_off_t=8
 		AS_IF([test "$target_cpu" = x64], [
 		    ac_cv_func___builtin_setjmp=yes
 		    ac_cv_func_round=no
+		    ac_cv_func_tgamma=no
 		])
-		ac_cv_func_tgamma=no
 		AC_CHECK_TYPE([NET_LUID], [], [],
 			      [@%:@include <winsock2.h>
-			      @%:@include <iphlpapi.h>])
+			       @%:@include <windows.h>
+			       @%:@include <iphlpapi.h>])
 		AS_IF([test x"$ac_cv_type_NET_LUID" = xyes], [
 		    AC_DEFINE(HAVE_TYPE_NET_LUID, 1)
 		])
@@ -1229,12 +1338,8 @@ main()
 		# __builtin_longjmp in ppc64* Linux does not restore
 		# the TOC register (r2), which is problematic
 		# when a global exit happens from JITted .so code.
-		AS_CASE(["$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], [
+		# __builtin_setjmp can have issues on arm64 linux (see [Bug #14480]).
+		AS_CASE(["$target_cpu"], [powerpc64*|arm64|aarch64], [
 			ac_cv_func___builtin_setjmp=no
 		])
 		],
@@ -1247,7 +1352,7 @@ main()
 [wasi*],[	LIBS="-lm -lwasi-emulated-mman -lwasi-emulated-signal -lwasi-emulated-getpid -lwasi-emulated-process-clocks $LIBS"
 		RUBY_APPEND_OPTIONS(CFLAGS, -D_WASI_EMULATED_SIGNAL -D_WASI_EMULATED_MMAN -D_WASI_EMULATED_GETPID -D_WASI_EMULATED_PROCESS_CLOCKS)
 		RUBY_APPEND_OPTIONS(CPPFLAGS, -D_WASI_EMULATED_SIGNAL -D_WASI_EMULATED_MMAN -D_WASI_EMULATED_GETPID -D_WASI_EMULATED_PROCESS_CLOCKS)
-		POSTLINK="\$(WASMOPT) --asyncify \$(wasmoptflags) --pass-arg=asyncify-ignore-imports -o \$@ \$@${POSTLINK:+; $POSTLINK}"
+		POSTLINK="\$(WASMOPT) --asyncify \$(wasmoptflags) -o \$@ \$@${POSTLINK:+; $POSTLINK}"
 		# wasi-libc's sys/socket.h is not compatible with -std=gnu99,
 		# so re-declare shutdown in include/ruby/missing.h
 		ac_cv_func_shutdown=no
@@ -1255,6 +1360,13 @@ main()
 [	LIBS="-lm $LIBS"])
 : ${ORIG_LIBS=$LIBS}
 
+AS_IF([test -n "${POSTLINK}"], [
+    # NOTE: A (part of) link commands used link shared extension libraries. If
+    # the first line of the value is empty, mkmf prepends default link steps.
+    LINK_SO="$LINK_SO
+\$(POSTLINK)"
+])
+
 AS_IF([test -n "${rb_there_is_in_fact_no_gplusplus_but_autoconf_is_cheating_us}"], [
     AC_MSG_NOTICE([Test skipped due to lack of a C++ compiler.])
 ],
@@ -1283,6 +1395,11 @@ dnl AC_HEADER_STDC has been checked in AC_USE_SYSTEM_EXTENSIONS
 AC_HEADER_STDBOOL
 AC_HEADER_SYS_WAIT
 
+AC_CHECK_HEADERS([afunix.h], [], [],
+[#ifdef _WIN32
+# include <winsock2.h>
+#endif
+])
 AC_CHECK_HEADERS(atomic.h)
 AC_CHECK_HEADERS(copyfile.h)
 AC_CHECK_HEADERS(direct.h)
@@ -1302,6 +1419,7 @@ 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(sanitizer/tsan_interface.h)
 AC_CHECK_HEADERS(setjmpex.h)
 AC_CHECK_HEADERS(stdalign.h)
 AC_CHECK_HEADERS(stdio.h)
@@ -1329,13 +1447,18 @@ AC_CHECK_HEADERS(syscall.h)
 AC_CHECK_HEADERS(time.h)
 AC_CHECK_HEADERS(ucontext.h)
 AC_CHECK_HEADERS(utime.h)
-AS_CASE("$target_cpu", [x64|x86_64|i[3-6]86*], [
+AC_CHECK_HEADERS(sys/epoll.h)
+AC_CHECK_HEADERS(sys/event.h)
+AC_CHECK_HEADERS(stdckdint.h)
+AC_CHECK_HEADERS(stdatomic.h)
+
+AS_CASE("$target_cpu", [x64|x86_64|[i[3-6]86*]], [
   AC_CHECK_HEADERS(x86intrin.h)
 ])
 RUBY_UNIVERSAL_CHECK_HEADER([x86_64, i386], x86intrin.h)
 
 AS_IF([test "x$with_gmp" != xno],
-  [AC_CHECK_HEADERS(gmp.h)
+  [RUBY_CHECK_HEADER(gmp.h)
    AS_IF([test "x$ac_cv_header_gmp_h" != xno],
      AC_SEARCH_LIBS([__gmpz_init], [gmp],
        [AC_DEFINE(HAVE_LIBGMP, 1)]))])
@@ -1345,6 +1468,8 @@ AC_ARG_WITH([jemalloc],
   [with_jemalloc=$withval], [with_jemalloc=no])
 AS_IF([test "x$with_jemalloc" != xno],[
   # find jemalloc header first
+  save_CPPFLAGS="${CPPFLAGS}"
+  CPPFLAGS="${INCFLAGS} ${CPPFLAGS}"
   malloc_header=
   AC_CHECK_HEADER(jemalloc/jemalloc.h, [malloc_header=jemalloc/jemalloc.h], [
     AC_CHECK_HEADER(jemalloc.h, [malloc_header=jemalloc.h])
@@ -1376,6 +1501,8 @@ AS_IF([test "x$with_jemalloc" != xno],[
       done
     done
   ])
+  CPPFLAGS="${save_CPPFLAGS}"
+  unset save_CPPFLAGS
   with_jemalloc=${rb_cv_jemalloc_library}
   AS_CASE(["$with_jemalloc"],
   [no],
@@ -1401,7 +1528,7 @@ AC_SYS_LARGEFILE
 # which is not added by AC_SYS_LARGEFILE.
 AS_IF([test x"$enable_largefile" != xno], [
   AS_CASE(["$target_os"], [solaris*], [
-    AC_MSG_CHECKING([wheather _LARGEFILE_SOURCE should be defined])
+    AC_MSG_CHECKING([whether _LARGEFILE_SOURCE should be defined])
     AS_CASE(["${ac_cv_sys_file_offset_bits}:${ac_cv_sys_large_files}"],
       ["64:"|"64:no"|"64:unknown"], [
 	# insert _LARGEFILE_SOURCE before _FILE_OFFSET_BITS line
@@ -1462,6 +1589,25 @@ RUBY_CHECK_SIZEOF(float)
 RUBY_CHECK_SIZEOF(double)
 RUBY_CHECK_SIZEOF(time_t, [long "long long"], [], [@%:@include <time.h>])
 RUBY_CHECK_SIZEOF(clock_t, [], [], [@%:@include <time.h>])
+AC_SUBST(X_BUILTIN_BINARY, yes)
+AS_IF([test "$cross_compiling" = yes],
+[dnl miniruby cannot run if cross compiling
+    X_BUILTIN_BINARY=no
+],
+[
+    AS_CASE([ac_cv_sizeof_voidp],
+    [[1-9]*], [dnl fixed value
+    ],
+    [
+        AC_CACHE_CHECK([word size], [rb_cv_word_size],
+            [for w in 4 8; do
+                AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@if SIZEOF_VOIDP != ${w}
+                @%:@error SIZEOF_VOIDP
+                @%:@endif]])], [rb_cv_word_size=${w}; break])
+            done])
+        AS_IF([test -z $rb_cv_word_size], [X_BUILTIN_BINARY=no])
+    ])
+])
 
 AC_CACHE_CHECK(packed struct attribute, rb_cv_packed_struct,
     [rb_cv_packed_struct=no
@@ -1474,10 +1620,9 @@ AC_CACHE_CHECK(packed struct attribute, rb_cv_packed_struct,
 		[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])
+    AC_DEFINE_UNQUOTED([RBIMPL_ATTR_PACKED_STRUCT_BEGIN()], [`echo " $rb_cv_packed_struct " | sed 's/ x .*//;s/^ *//'`])
+    AC_DEFINE_UNQUOTED([RBIMPL_ATTR_PACKED_STRUCT_END()], [`echo " $rb_cv_packed_struct " | sed 's/.* x //;s/ *$//'`])
     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$ac_cv_type_long_long" = xyes], [
@@ -1582,21 +1727,6 @@ AS_IF([test "$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 "$rb_cv_CentOS6_CXX_workaround" != no],[
-  AC_DEFINE([RUBY_CXX_DEPRECATED(msg)],
-    [__attribute__((__deprecated__(msg)))])])
-
 AC_CACHE_CHECK([for std::nullptr_t], rb_cv_CXX_nullptr, [
   AC_LANG_PUSH([C++])
   AC_COMPILE_IFELSE(
@@ -1646,6 +1776,26 @@ AS_IF([test "$GCC" = yes], [
 		    [rb_cv_gcc_atomic_builtins=no])])
     AS_IF([test "$rb_cv_gcc_atomic_builtins" = yes], [
 	AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS)
+	for lib in "" atomic; do
+	    AS_IF([test "$lib" != ""], [
+		AC_CHECK_LIB([atomic], [__atomic_fetch_add_8])
+		unset rb_cv_gcc_atomic_builtins_64
+	    ])
+	    AC_CACHE_CHECK([for 64bit __atomic builtins${lib:+ with -l$lib}],
+		[rb_cv_gcc_atomic_builtins_64], [
+		AC_LINK_IFELSE([AC_LANG_PROGRAM([[@%:@include <stdint.h>
+			    uint64_t atomic_var;]],
+			    [[
+				__atomic_load_n(&atomic_var, __ATOMIC_RELAXED);
+				__atomic_store_n(&atomic_var, 0, __ATOMIC_RELAXED);
+			    ]])],
+			    [rb_cv_gcc_atomic_builtins_64=yes],
+			    [rb_cv_gcc_atomic_builtins_64=no])])
+	    AS_IF([test "$rb_cv_gcc_atomic_builtins_64" = yes], [
+		AC_DEFINE(HAVE_GCC_ATOMIC_BUILTINS_64)
+		break
+	    ])
+	done
     ])
 
     AC_CACHE_CHECK([for __sync builtins], [rb_cv_gcc_sync_builtins], [
@@ -1692,7 +1842,7 @@ AS_IF([test "$GCC" = yes], [
 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
+for mac in '__declspec(dllexport)' '__attribute__ ((__visibility__("default")))'; do
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@define RUBY_FUNC_EXPORTED $mac extern
     RUBY_FUNC_EXPORTED void conftest_attribute_check(void);]], [[]])],
     [rb_cv_func_exported="$mac"; break])
@@ -1709,16 +1859,12 @@ RUBY_DECL_ATTRIBUTE([__nonnull__(n)], [RUBY_FUNC_NONNULL(n,x)], [rb_cv_func_nonn
 
 RUBY_APPEND_OPTION(XCFLAGS, -DRUBY_EXPORT)
 
-AC_ARG_ENABLE(mathn,
-    AS_HELP_STRING([--enable-mathn], [enable canonicalization for mathn]),
-    [AC_MSG_ERROR([mathn support has been dropped])])
-
 AC_CACHE_CHECK(for function name string predefined identifier,
     rb_cv_function_name_string,
     [AS_CASE(["$target_os"],[openbsd*],[
       rb_cv_function_name_string=__func__
      ],[
-     rb_cv_function_name_string=no
+      rb_cv_function_name_string=no
       RUBY_WERROR_FLAG([
         for func in __func__ __FUNCTION__; do
             AC_LINK_IFELSE([AC_LANG_PROGRAM([[@%:@include <stdio.h>]],
@@ -1726,7 +1872,8 @@ AC_CACHE_CHECK(for function name string predefined identifier,
             [rb_cv_function_name_string=$func
             break])
         done
-      ])])]
+      ])
+    ])]
 )
 AS_IF([test "$rb_cv_function_name_string" != no], [
     AC_DEFINE_UNQUOTED(RUBY_FUNCTION_NAME_STRING, [$rb_cv_function_name_string])
@@ -1986,6 +2133,7 @@ AC_CHECK_FUNCS(_longjmp)		# used for AC_ARG_WITH(setjmp-type)
 test x$ac_cv_func__longjmp = xno && ac_cv_func__setjmp=no
 AC_CHECK_FUNCS(arc4random_buf)
 AC_CHECK_FUNCS(atan2l atan2f)
+AC_CHECK_DECLS(atomic_signal_fence, [], [], [@%:@include <stdatomic.h>])
 AC_CHECK_FUNCS(chmod)
 AC_CHECK_FUNCS(chown)
 AC_CHECK_FUNCS(chroot)
@@ -2009,6 +2157,7 @@ AC_CHECK_FUNCS(execv)
 AC_CHECK_FUNCS(execve)
 AC_CHECK_FUNCS(explicit_memset)
 AC_CHECK_FUNCS(fcopyfile)
+AC_CHECK_FUNCS(fchdir)
 AC_CHECK_FUNCS(fchmod)
 AC_CHECK_FUNCS(fchown)
 AC_CHECK_FUNCS(fcntl)
@@ -2049,7 +2198,6 @@ AC_CHECK_FUNCS(gettimeofday)		# for making ac_cv_func_gettimeofday
 AC_CHECK_FUNCS(getuid)
 AC_CHECK_FUNCS(getuidx)
 AC_CHECK_FUNCS(gmtime_r)
-AC_CHECK_FUNCS(grantpt)
 AC_CHECK_FUNCS(initgroups)
 AC_CHECK_FUNCS(ioctl)
 AC_CHECK_FUNCS(isfinite)
@@ -2066,6 +2214,7 @@ AC_CHECK_FUNCS(lstat)
 AC_CHECK_FUNCS(lutimes)
 AC_CHECK_FUNCS(malloc_usable_size)
 AC_CHECK_FUNCS(malloc_size)
+AC_CHECK_FUNCS(malloc_trim)
 AC_CHECK_FUNCS(mblen)
 AC_CHECK_FUNCS(memalign)
 AC_CHECK_FUNCS(memset_s)
@@ -2119,6 +2268,7 @@ AC_CHECK_FUNCS(sigaction)
 AC_CHECK_FUNCS(sigaltstack)
 AC_CHECK_FUNCS(sigprocmask)
 AC_CHECK_FUNCS(sinh)
+AC_CHECK_FUNCS(snprintf)
 AC_CHECK_FUNCS(spawnv)
 AC_CHECK_FUNCS(symlink)
 AC_CHECK_FUNCS(syscall)
@@ -2143,9 +2293,6 @@ AC_CHECK_FUNCS(__sinpi)
 AS_IF([test "x$ac_cv_member_struct_statx_stx_btime" = xyes],
     [AC_CHECK_FUNCS(statx)])
 
-AS_CASE(["$ac_cv_func_memset_s:$ac_cv_func_qsort_s"], [*yes*],
-    [RUBY_DEFINE_IF([!defined __STDC_WANT_LIB_EXT1__], [__STDC_WANT_LIB_EXT1__], 1)])
-
 AS_IF([test "$ac_cv_func_getcwd" = yes], [
     AC_CACHE_CHECK(if getcwd allocates buffer if NULL is given, [rb_cv_getcwd_malloc],
 	[AC_RUN_IFELSE([AC_LANG_SOURCE([[
@@ -2195,10 +2342,6 @@ 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))]];
@@ -2214,6 +2357,10 @@ RUBY_CHECK_BUILTIN_FUNC(__builtin_types_compatible_p, [__builtin_types_compatibl
 RUBY_CHECK_BUILTIN_FUNC(__builtin_trap, [__builtin_trap()])
 RUBY_CHECK_BUILTIN_FUNC(__builtin_expect, [__builtin_expect(0, 0)])
 
+RUBY_CHECK_BUILTIN_OVERFLOW(add)
+RUBY_CHECK_BUILTIN_OVERFLOW(sub)
+RUBY_CHECK_BUILTIN_OVERFLOW(mul)
+
 AS_IF([test "$ac_cv_func_qsort_r" != no], [
   AC_CACHE_CHECK(whether qsort_r is GNU version, rb_cv_gnu_qsort_r,
     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@@ -2601,6 +2748,9 @@ AS_CASE([$coroutine_type], [yes|''], [
         [*86-mingw*], [
             coroutine_type=win32
         ],
+        [aarch64-mingw*], [
+            coroutine_type=arm64
+        ],
         [arm*-linux*], [
             coroutine_type=arm32
         ],
@@ -2613,6 +2763,9 @@ AS_CASE([$coroutine_type], [yes|''], [
         [riscv64-linux*], [
             coroutine_type=riscv64
         ],
+        [loongarch64-linux*], [
+            coroutine_type=loongarch64
+        ],
         [x86_64-freebsd*], [
             coroutine_type=amd64
         ],
@@ -2622,6 +2775,12 @@ AS_CASE([$coroutine_type], [yes|''], [
         [aarch64-freebsd*], [
             coroutine_type=arm64
         ],
+        [powerpc64-freebsd*], [
+            coroutine_type=ppc64le
+        ],
+        [powerpc64le-freebsd*], [
+            coroutine_type=ppc64le
+        ],
         [x86_64-netbsd*], [
             coroutine_type=amd64
         ],
@@ -2637,6 +2796,12 @@ AS_CASE([$coroutine_type], [yes|''], [
         [i386-openbsd*], [
             coroutine_type=x86
         ],
+        [aarch64-openbsd*], [
+            coroutine_type=arm64
+        ],
+        [riscv64-openbsd*], [
+            coroutine_type=riscv64
+        ],
         [*-openbsd*], [
             coroutine_type=pthread
         ],
@@ -2734,6 +2899,22 @@ AS_IF([test "$THREAD_MODEL" = pthread], [
 		AC_DEFINE_UNQUOTED(SET_ANOTHER_THREAD_NAME(thid,name), $set_another_thread_name)
 	    ])
     ])
+
+    AC_CACHE_CHECK([for thread-local storage specifier], [rb_cv_tls_specifier],
+        rb_cv_tls_specifier=none
+        RUBY_WERROR_FLAG([
+            for attr in \
+                _Thread_local \
+                __thread \
+                ; do
+                AC_LINK_IFELSE([AC_LANG_PROGRAM([[$attr int conftest;]])],
+                    [rb_cv_tls_specifier=$attr; break])
+            done
+        ])
+    )
+    AS_IF([test x"${rb_cv_tls_specifier}" != xnone],
+        [AC_DEFINE_UNQUOTED(RB_THREAD_LOCAL_SPECIFIER, ${rb_cv_tls_specifier})]
+    )
 ])
 
 AS_IF([test x"$ac_cv_header_ucontext_h" = xno], [
@@ -2877,8 +3058,8 @@ AS_IF([test "x$ac_cv_func_ioctl" = xyes], [
 
 }
 
-: "runtime section" && {
-dnl wheather use dln_a_out or not
+[begin]_group "runtime section" && {
+dnl whether use dln_a_out or not
 AC_ARG_WITH(dln-a-out,
 	AS_HELP_STRING([--with-dln-a-out], [dln_a_out is deprecated]),
 	[
@@ -2911,22 +3092,8 @@ AS_CASE(["$target_os"],
     ])])
 LIBEXT=a
 
-AC_ARG_WITH(mjit-tabs,
-    AS_HELP_STRING([--without-mjit-tabs], [expand tabs in mjit header]),
-    [AS_IF([test $withval = no], [MJIT_TABS=false])])
-AC_SUBST(MJIT_TABS)dnl
 AC_SUBST(DLDFLAGS)dnl
 AC_SUBST(ARCH_FLAG)dnl
-AC_SUBST(MJIT_HEADER_FLAGS)dnl
-AC_SUBST(MJIT_HEADER_INSTALL_DIR)dnl
-AC_SUBST(MJIT_CC)dnl
-AS_CASE(["$GCC:$target_os"],
-    [yes:aix*], [mjit_std_cflag="-std=gnu99"],
-    [mjit_std_cflag=])
-AC_SUBST(MJIT_CFLAGS, [${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
@@ -3040,11 +3207,10 @@ AC_SUBST(EXTOBJS)
 	[darwin*], [	: ${LDSHARED='$(CC) -dynamic -bundle'}
 			: ${DLDSHARED='$(CC) -dynamiclib'}
 			: ${LDFLAGS=""}
-			: ${LIBPATHENV=DYLD_FALLBACK_LIBRARY_PATH}
+			: ${LIBPATHENV=DYLD_LIBRARY_PATH}
 			: ${PRELOADENV=DYLD_INSERT_LIBRARIES}
                         AS_IF([test x"$enable_shared" = xyes], [
-                            # Resolve symbols from libruby.dylib when --enable-shared
-                            EXTDLDFLAGS='$(LIBRUBYARG_SHARED)'
+                            # Resolve symbols from libruby.dylib in $(LIBS) when --enable-shared
                         ], [test "x$EXTSTATIC" = x], [
                             # When building exts as bundles, a mach-o bundle needs to know its loader
                             # program to bind symbols from the ruby executable
@@ -3080,6 +3246,7 @@ AC_SUBST(EXTOBJS)
 	[hiuxmpp], [	: ${LDSHARED='$(LD) -r'}],
 	[atheos*], [	: ${LDSHARED='$(CC) -shared'}
 			rb_cv_dlopen=yes],
+	[wasi*], [	: ${LDSHARED='$(LD) -shared -Xlinker --export-dynamic'}],
 	[	: ${LDSHARED='$(LD)'}])
     AC_MSG_RESULT($rb_cv_dlopen)
 }
@@ -3098,7 +3265,7 @@ AS_IF([test "$rb_cv_dlopen" = yes], [
 
             AC_MSG_CHECKING([whether $flag is accepted for bundle])
             : > conftest.c
-            AS_IF([${LDSHARED/'$(CC)'/$CC} -o conftest.bundle $flag conftest.c >/dev/null 2>conftest.err &&
+            AS_IF([${LDSHARED%%'$(CC)'*}$CC${LDSHARED@%:@*'$(CC)'} -o conftest.bundle $flag conftest.c >/dev/null 2>conftest.err &&
                 test ! -s conftest.err], [
                 AC_MSG_RESULT([yes])
                 RUBY_APPEND_OPTIONS(DLDFLAGS, [$flag])
@@ -3244,7 +3411,6 @@ AS_IF([test x$with_valgrind != xno],
 	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], [
@@ -3263,6 +3429,9 @@ AC_DEFINE_UNQUOTED(DLEXT_MAXLEN, `expr $len + 1`)
 test ".$DLEXT"  = "." || AC_DEFINE_UNQUOTED(DLEXT,  ".$DLEXT")
 AC_SUBST(DLEXT)
 
+AC_DEFINE_UNQUOTED(SOEXT, ".$SOEXT")
+}
+
 : "strip" && {
     AC_MSG_CHECKING([for $STRIP flags])
     AC_LINK_IFELSE([AC_LANG_PROGRAM], [AS_IF(
@@ -3335,7 +3504,7 @@ done
 
 BTESTRUBY='$(MINIRUBY)'
 AS_IF([test x"$cross_compiling" = xyes], [
-  test x"$MINIRUBY" = x && MINIRUBY="${RUBY-$BASERUBY} -I`$CHDIR .; pwd` "-r'$(arch)-fake'
+  test x"$MINIRUBY" = x && MINIRUBY="${RUBY-$BASERUBY} -I${ac_abs_builddir-.} "-r'$(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"]']`
@@ -3343,6 +3512,10 @@ AS_IF([test x"$cross_compiling" = xyes], [
   AC_SUBST(XRUBY_RUBYLIBDIR)
   AC_SUBST(XRUBY_RUBYHDRDIR)
   PREP='$(arch)-fake.rb'
+  AS_CASE(["$enable_shared:$EXTSTATIC:$target_os"], [no::darwin*], [
+    # darwin target requires miniruby for linking ext bundles
+    PREP="$PREP"' miniruby$(EXEEXT)'
+  ])
   RUNRUBY_COMMAND='$(MINIRUBY) -I`cd $(srcdir)/lib; pwd`'
   RUNRUBY='$(RUNRUBY_COMMAND)'
   XRUBY='$(MINIRUBY)'
@@ -3369,7 +3542,6 @@ AC_SUBST(RUNRUBY)
 AC_SUBST(XRUBY)
 AC_SUBST(EXTOUT, [${EXTOUT=.ext}])
 
-FIRSTMAKEFILE=""
 LIBRUBY_A='lib$(RUBY_SO_NAME)-static.a'
 LIBRUBY='$(LIBRUBY_A)'
 LIBRUBYARG_STATIC='-l$(RUBY_SO_NAME)-static'
@@ -3389,9 +3561,6 @@ AC_ARG_ENABLE(multiarch,
 	      [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}'
@@ -3412,7 +3581,7 @@ AC_ARG_WITH(soname,
 	    ],
 	    [mingw*], [
 		RUBY_SO_NAME="${rb_cv_msvcrt}"'-$(RUBY_BASE_NAME)$(MAJOR)$(MINOR)0'
-		AS_IF([test x"${target_cpu}" != xi386], [
+		AS_IF([test x"${target_cpu}" != xi386 || test x"${rb_cv_msvcrt}" != xmsvcrt], [
 		    RUBY_SO_NAME="${target_cpu}-${RUBY_SO_NAME}"
 		])
 	    ],
@@ -3469,6 +3638,7 @@ AS_CASE("$enable_shared", [yes], [
      ])
     ])
 
+  relative_libprefix="/../${multiarch+../}${libdir_basename}"
   AS_CASE(["$target_os"],
     [sunos4*], [
 	LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
@@ -3477,7 +3647,7 @@ AS_CASE("$enable_shared", [yes], [
 	RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ['-Wl,-soname,$(LIBRUBY_SONAME)' "$LDFLAGS_OPTDIR"])
 	LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
 	AS_IF([test "$load_relative" = yes], [
-	    libprefix="'\$\${ORIGIN}/../${libdir_basename}'"
+	    libprefix="'\$\${ORIGIN}${relative_libprefix}'"
 	    LIBRUBY_RPATHFLAGS="-Wl,-rpath,${libprefix}"
 	    LIBRUBY_RELATIVE=yes
 	])
@@ -3489,7 +3659,7 @@ AS_CASE("$enable_shared", [yes], [
 	    LIBRUBY_SO="$LIBRUBY_SO.\$(TEENY)"
 	    LIBRUBY_ALIASES=''
 	], [test "$load_relative" = yes], [
-	    libprefix="'\$\$ORIGIN/../${libdir_basename}'"
+	    libprefix="'\$\$ORIGIN${relative_libprefix}'"
 	    LIBRUBY_RPATHFLAGS="-Wl,-rpath,${libprefix}"
 	    LIBRUBY_RELATIVE=yes
 	])
@@ -3513,7 +3683,7 @@ AS_CASE("$enable_shared", [yes], [
 	LIBRUBY_ALIASES='$(LIBRUBY_SONAME) lib$(RUBY_SO_NAME).$(SOEXT)'
 	RUBY_APPEND_OPTIONS(LIBRUBY_DLDFLAGS, ["${linker_flag}-h${linker_flag:+,}"'$(@F)'])
 	AS_IF([test "$load_relative" = yes], [
-	    libprefix="'\$\$ORIGIN/../${libdir_basename}'"
+	    libprefix="'\$\$ORIGIN${relative_libprefix}'"
 	    LIBRUBY_RPATHFLAGS="-R${libprefix}"
 	    LIBRUBY_RELATIVE=yes
 	], [
@@ -3530,7 +3700,7 @@ AS_CASE("$enable_shared", [yes], [
 	LIBRUBY_SONAME='$(LIBRUBY_SO)'
 	LIBRUBY_ALIASES='lib$(RUBY_INSTALL_NAME).$(SOEXT)'
 	AS_IF([test "$load_relative" = yes], [
-	    libprefix="@executable_path/../${libdir_basename}"
+	    libprefix="@executable_path${relative_libprefix}"
 	    LIBRUBY_RELATIVE=yes
 	])
 	LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS -install_name ${libprefix}"'/$(LIBRUBY_SONAME)'
@@ -3538,6 +3708,7 @@ AS_CASE("$enable_shared", [yes], [
 	LIBRUBY_DLDFLAGS="$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,_InitVM_*'
 	    LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,_ruby_static_id_*'
 	    LIBRUBY_DLDFLAGS="$LIBRUBY_DLDFLAGS "'-Wl,-unexported_symbol,*_threadptr_*'
 	])
@@ -3578,16 +3749,16 @@ AS_CASE("$enable_shared", [yes], [
   ])
 ])
 AS_IF([test "$enable_rpath" = yes], [
-    test -z "$LIBRUBY_RPATHFLAGS" || LIBRUBY_RPATHFLAGS="$LIBRUBY_RPATHFLAGS "
-    rpathflag="${RPATHFLAG}"
-    AS_CASE(["${cross_compiling}${load_relative}"], [*yes*], [], [rpathflag="$RPATHFLAG$LIBPATHFLAG"])
+    AS_CASE(["${cross_compiling}${load_relative}"],
+        [*yes*], [rpathflag="${RPATHFLAG}"],
+        [rpathflag="$RPATHFLAG${LIBPATHFLAG:+${RPATHFLAG:+ }$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 $LIBRUBYARG_STATIC"
+    LIBRUBY_RPATHFLAGS="${LIBRUBY_RPATHFLAGS:+$LIBRUBY_RPATHFLAGS }${rpathflag}"
+    LIBRUBYARG_SHARED="${LIBRUBY_RPATHFLAGS:+$LIBRUBY_RPATHFLAGS }$LIBRUBYARG_SHARED"
+    LIBRUBYARG_STATIC="${LIBRUBY_RPATHFLAGS:+$LIBRUBY_RPATHFLAGS }$LIBRUBYARG_STATIC"
 ])
 AC_SUBST(LIBRUBY_RELATIVE)
 
@@ -3664,14 +3835,15 @@ 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"
+    CFLAGS="$CFLAGS -coverage -fprofile-update=atomic"
     LDFLAGS="$LDFLAGS -coverage"
 ])
 
 RUBY_SETJMP_TYPE
+RUBY_MODULAR_GC
 }
 
-: "build section" && {
+[begin]_group "installation section" && {
 dnl build rdoc index if requested
 RDOCTARGET=""
 CAPITARGET=""
@@ -3719,48 +3891,55 @@ 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=$enableval],
-    [AS_CASE(["$target_os"],
-        [wasi | mingw* | solaris*], [MJIT_SUPPORT=no],
-        [MJIT_SUPPORT=yes]
-    )])
-
-AS_IF([test x"$MJIT_SUPPORT" = "xyes"],
-	[AC_DEFINE(USE_MJIT, 1)],
-	[AC_DEFINE(USE_MJIT, 0)])
-
-AC_SUBST(MJIT_SUPPORT)
+AC_ARG_ENABLE(install-static-library,
+	AS_HELP_STRING([--disable-install-static-library], [do not install static ruby library]),
+	[INSTALL_STATIC_LIBRARY=$enableval
+         AS_IF([test x"$enable_shared" = xno -a x"$INSTALL_STATIC_LIBRARY" = xno],
+                 [AC_MSG_ERROR([must install either static or shared library])],
+                 [])],
+	AS_IF([test x"$enable_shared" = xyes],
+	    [INSTALL_STATIC_LIBRARY=no],
+	    [INSTALL_STATIC_LIBRARY=yes]))
+AC_SUBST(INSTALL_STATIC_LIBRARY)
+}
 
+[begin]_group "JIT section" && {
 AC_CHECK_PROG(RUSTC, [rustc], [rustc], [no]) dnl no ac_tool_prefix
 
 dnl check if rustc is recent enough to build YJIT (rustc >= 1.58.0)
-YJIT_RUSTC_OK=no
+JIT_RUSTC_OK=no
+JIT_TARGET_ARCH=
 AS_IF([test "$RUSTC" != "no"],
-    AC_MSG_CHECKING([whether ${RUSTC} is new enough for YJIT])
-    AS_IF([echo "fn main() { let x = 1; format!(\"{x}\"); }" | $RUSTC - --emit asm=/dev/null 2>/dev/null],
-        [YJIT_RUSTC_OK=yes]
+    AC_MSG_CHECKING([whether ${RUSTC} works for YJIT])
+    AS_CASE(["$target_cpu"],
+        [arm64|aarch64], [JIT_TARGET_ARCH=aarch64],
+        [x86_64], [JIT_TARGET_ARCH=x86_64],
+    )
+    dnl Fails in case rustc target doesn't match ruby target.
+    dnl Can happen on Rosetta, for example.
+    AS_IF([echo "#[cfg(target_arch = \"$JIT_TARGET_ARCH\")] fn main() { let x = 1; format!(\"{x}\"); }" |
+            $RUSTC - --emit asm=/dev/null 2>/dev/null],
+        [JIT_RUSTC_OK=yes]
     )
-    AC_MSG_RESULT($YJIT_RUSTC_OK)
+    AC_MSG_RESULT($JIT_RUSTC_OK)
 )
 
-dnl check if we can build YJIT on this target platform
+dnl check if we can build YJIT/ZJIT on this target platform
 dnl we can't easily cross-compile with rustc so we don't support that
-YJIT_TARGET_OK=no
+JIT_TARGET_OK=no
 AS_IF([test "$cross_compiling" = no],
     AS_CASE(["$target_cpu-$target_os"],
         [*android*], [
-            YJIT_TARGET_OK=no
+            JIT_TARGET_OK=no
         ],
         [arm64-darwin*|aarch64-darwin*|x86_64-darwin*], [
-            YJIT_TARGET_OK=yes
+            JIT_TARGET_OK=yes
         ],
         [arm64-*linux*|aarch64-*linux*|x86_64-*linux*], [
-            YJIT_TARGET_OK=yes
+            JIT_TARGET_OK=yes
         ],
         [arm64-*bsd*|aarch64-*bsd*|x86_64-*bsd*], [
-            YJIT_TARGET_OK=yes
+            JIT_TARGET_OK=yes
         ]
     )
 )
@@ -3768,81 +3947,194 @@ AS_IF([test "$cross_compiling" = no],
 dnl build YJIT in release mode if rustc >= 1.58.0 is present and we are on a supported platform
 AC_ARG_ENABLE(yjit,
     AS_HELP_STRING([--enable-yjit],
-    [enable experimental in-process JIT compiler that requires Rust build tools [default=no]]),
+    [enable in-process JIT compiler that requires Rust build tools. enabled by default on supported platforms if rustc 1.58.0+ is available]),
     [YJIT_SUPPORT=$enableval],
-    [AS_CASE(["$enable_jit_support:$YJIT_TARGET_OK:$YJIT_RUSTC_OK"],
-        [yes:yes:yes|:yes:yes], [
+    [AS_CASE(["$JIT_TARGET_OK:$JIT_RUSTC_OK"],
+        [yes:yes], [
             YJIT_SUPPORT=yes
         ],
         [YJIT_SUPPORT=no]
     )]
 )
 
-CARGO=
+dnl build ZJIT in release mode if rustc >= 1.85.0 is present and we are on a supported platform
+ZJIT_SUPPORT=no
+AC_ARG_ENABLE(zjit,
+    AS_HELP_STRING([--enable-zjit],
+    [enable experimental JIT compiler that requires Rust build tools. enabled by default on supported platforms if rustc 1.85.0+ is available]),
+    [ZJIT_SUPPORT=$enableval],
+    [AS_CASE(["$JIT_TARGET_OK"],
+        [yes], [
+            rb_zjit_build_possible=no
+            AC_MSG_CHECKING([prerequisites for ZJIT])dnl only checked when --enable-zjit is not specified
+            # Fails in case rustc target doesn't match ruby target. Can happen on Rosetta, for example.
+            # 1.85.0 is the first stable version that supports the 2024 edition.
+            AS_IF([test "$RUSTC" != "no" && echo "#[cfg(target_arch = \"$JIT_TARGET_ARCH\")] fn main() {}" |
+                    $RUSTC - --edition=2024 --emit asm=/dev/null 2>/dev/null],
+                AS_IF([test "$gnumake" = "yes"], [
+                    rb_zjit_build_possible=yes
+                ])
+            )
+            AC_MSG_RESULT($rb_zjit_build_possible)
+            ZJIT_SUPPORT=$rb_zjit_build_possible
+        ]
+    )]
+)
+
 CARGO_BUILD_ARGS=
 YJIT_LIBS=
+JIT_CARGO_SUPPORT=no
 AS_CASE(["${YJIT_SUPPORT}"],
 [yes|dev|stats|dev_nodebug], [
-    AS_IF([test x"$enable_jit_support" = "xno"],
-        AC_MSG_ERROR([--disable-jit-support but --enable-yjit. YJIT requires JIT support])
-    )
     AS_IF([test x"$RUSTC" = "xno"],
         AC_MSG_ERROR([rustc is required. Installation instructions available at https://www.rust-lang.org/tools/install])
     )
 
     AS_CASE(["${YJIT_SUPPORT}"],
     [yes], [
-	rb_rust_target_subdir=release
     ],
     [dev], [
-	rb_rust_target_subdir=debug
-	CARGO_BUILD_ARGS='--features stats,disasm'
+        rb_cargo_features='disasm,runtime_checks'
+        JIT_CARGO_SUPPORT=dev
 	AC_DEFINE(RUBY_DEBUG, 1)
     ],
     [dev_nodebug], [
-	rb_rust_target_subdir=dev_nodebug
-	CARGO_BUILD_ARGS='--profile dev_nodebug --features stats,disasm'
+        rb_cargo_features='disasm'
+        JIT_CARGO_SUPPORT=dev_nodebug
+	AC_DEFINE(YJIT_STATS, 1)
     ],
     [stats], [
-	rb_rust_target_subdir=stats
-	CARGO_BUILD_ARGS='--profile stats --features stats'
+        JIT_CARGO_SUPPORT=stats
 	AC_DEFINE(YJIT_STATS, 1)
     ])
 
-    AS_IF([test -n "${CARGO_BUILD_ARGS}"], [
-             AC_CHECK_TOOL(CARGO, [cargo], [no])
-             AS_IF([test x"$CARGO" = "xno"],
-                AC_MSG_ERROR([cargo is required. Installation instructions available at https://www.rust-lang.org/tools/install])
-             ]))
+    YJIT_LIBS="target/release/libyjit.a"
+    RUST_LIB='$(YJIT_LIBS)'
+    YJIT_OBJ='yjit.$(OBJEXT)'
+    JIT_OBJ='jit.$(OBJEXT)'
+    AS_IF([test x"$YJIT_SUPPORT" != "xyes" ], [
+        AC_DEFINE_UNQUOTED(YJIT_SUPPORT, [$YJIT_SUPPORT])
+    ])
+    AC_DEFINE(USE_YJIT, 1)
+], [
+    AC_DEFINE(USE_YJIT, 0)
+])
+
+ZJIT_LIBS=
+AS_CASE(["${ZJIT_SUPPORT}"],
+[yes|dev|dev_nodebug|stats], [
+    AS_IF([test x"$RUSTC" = "xno"],
+        AC_MSG_ERROR([rustc is required. Installation instructions available at https://www.rust-lang.org/tools/install])
+    )
+
+    AS_CASE(["${ZJIT_SUPPORT}"],
+    [yes], [
+    ],
+    [dev], [
+        rb_cargo_features="$rb_cargo_features,disasm,runtime_checks"
+        JIT_CARGO_SUPPORT=dev
+        AC_DEFINE(RUBY_DEBUG, 1)
+    ],
+    [dev_nodebug], [
+        rb_cargo_features="$rb_cargo_features,disasm"
+        JIT_CARGO_SUPPORT=dev_nodebug
+        AC_DEFINE(ZJIT_STATS, 1)
+    ],
+    [stats], [
+        JIT_CARGO_SUPPORT=stats
+        AC_DEFINE(ZJIT_STATS, 1)
+    ])
+
+    ZJIT_LIBS="target/release/libzjit.a"
+    RUST_LIB='$(ZJIT_LIBS)'
+    ZJIT_OBJ='zjit.$(OBJEXT)'
+    JIT_OBJ='jit.$(OBJEXT)'
+    AS_IF([test x"$ZJIT_SUPPORT" != "xyes" ], [
+        AC_DEFINE_UNQUOTED(ZJIT_SUPPORT, [$ZJIT_SUPPORT])
+    ])
+    AC_DEFINE(USE_ZJIT, 1)
+], [
+    AC_DEFINE(USE_ZJIT, 0)
+])
+
+RUSTC_FLAGS='-g -C lto=thin -C opt-level=3 -C overflow-checks=on'
+AS_IF([test -n "${rustc_flags}"], [
+    RUSTC_FLAGS="${RUSTC_FLAGS} ${rustc_flags}"
+])
 
-    YJIT_LIBS="yjit/target/${rb_rust_target_subdir}/libyjit.a"
+JIT_RUST_FLAGS='--crate-type=staticlib --cfg feature=\"stats_allocator\"'
+RLIB_DIR=
+AS_CASE(["$JIT_CARGO_SUPPORT:$YJIT_SUPPORT:$ZJIT_SUPPORT"],
+[no:yes:yes], [ # release build of YJIT+ZJIT
+    YJIT_LIBS=
+    ZJIT_LIBS=
+    JIT_RUST_FLAGS="--crate-type=rlib"
+    RLIB_DIR="target/release"
+    RUST_LIB="target/release/libruby.a"
+],
+[no:*], [],
+[ # JIT_CARGO_SUPPORT not "no" -- cargo required.
+    AC_CHECK_TOOL(CARGO, [cargo], [no])
+    AS_IF([test x"$CARGO" = "xno"],
+        AC_MSG_ERROR([this build configuration requires cargo. Installation instructions available at https://www.rust-lang.org/tools/install]))
+
+    YJIT_LIBS=
+    ZJIT_LIBS=
+
+    # There's more processing below to get the feature set for the
+    # top-level crate, so capture at this point for feature set of
+    # just the zjit crate.
+    ZJIT_TEST_FEATURES="${rb_cargo_features}"
+
+    AS_IF([test x"${YJIT_SUPPORT}" != x"no"], [
+        rb_cargo_features="$rb_cargo_features,yjit"
+    ])
+    AS_IF([test x"${ZJIT_SUPPORT}" != x"no"], [
+        AC_SUBST(ZJIT_TEST_FEATURES)
+        rb_cargo_features="$rb_cargo_features,zjit"
+    ])
+    # if YJIT and ZJIT release mode
+    AS_IF([test "${YJIT_SUPPORT}:${ZJIT_SUPPORT}" = "yes:yes"], [
+        JIT_CARGO_SUPPORT=release
+    ])
+    CARGO_BUILD_ARGS="--profile ${JIT_CARGO_SUPPORT} --features ${rb_cargo_features}"
+    AS_IF([test "${JIT_CARGO_SUPPORT}" = "dev"], [
+        RUST_LIB="target/debug/libruby.a"
+    ], [
+        RUST_LIB="target/${JIT_CARGO_SUPPORT}/libruby.a"
+    ])
+])
+
+# In case either we're linking rust code
+AS_IF([test -n "$RUST_LIB"], [
     AS_CASE(["$target_os"],[openbsd*],[
-        # Link libc++abi (which requires libpthread) for _Unwind_* functions needed by yjit
+        # Link libc++abi (which requires libpthread) for _Unwind_* functions needed by rust stdlib
         LDFLAGS="$LDFLAGS -lpthread -lc++abi"
     ])
-    YJIT_OBJ='yjit.$(OBJEXT)'
-    AC_DEFINE(USE_YJIT, 1)
-], [AC_DEFINE(USE_YJIT, 0)])
+
+    # absolute path to stop the "target" dir in src dir from interfering through VPATH
+    RUST_LIB="$(pwd)/${RUST_LIB}"
+])
 
 dnl These variables end up in ::RbConfig::CONFIG
-AC_SUBST(YJIT_SUPPORT)dnl what flavor of YJIT the Ruby build includes
 AC_SUBST(RUSTC)dnl Rust compiler command
+AC_SUBST(JIT_RUST_FLAGS)dnl the common rustc flags for JIT crates such as zjit
+AC_SUBST(RUSTC_FLAGS)dnl user-configurable rustc compiler flags
 AC_SUBST(CARGO)dnl Cargo command for Rust builds
 AC_SUBST(CARGO_BUILD_ARGS)dnl for selecting Rust build profiles
-AC_SUBST(YJIT_LIBS)dnl for optionally building the Rust parts of YJIT
+AC_SUBST(YJIT_SUPPORT)dnl what flavor of YJIT the Ruby build includes
+AC_SUBST(YJIT_LIBS)dnl the .a library of YJIT
 AC_SUBST(YJIT_OBJ)dnl for optionally building the C parts of YJIT
+AC_SUBST(ZJIT_SUPPORT)dnl what flavor of ZJIT the Ruby build includes
+AC_SUBST(ZJIT_LIBS)dnl path to the .a library of ZJIT
+AC_SUBST(ZJIT_OBJ)dnl for optionally building the C parts of ZJIT
+AC_SUBST(JIT_OBJ)dnl for optionally building C glue code for Rust FFI
+AC_SUBST(RUST_LIB)dnl path to the rust .a library that contains either or both JITs
+AC_SUBST(RLIB_DIR)dnl subpath of build directory for .rlib files
+AC_SUBST(JIT_CARGO_SUPPORT)dnl "no" or the cargo profile of the rust code
+}
 
-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" = xno -a x"$INSTALL_STATIC_LIBRARY" = xno],
-                 [AC_MSG_ERROR([must install either static or shared library])],
-                 [])],
-	AS_IF([test x"$enable_shared" = xyes],
-	    [INSTALL_STATIC_LIBRARY=no],
-	    [INSTALL_STATIC_LIBRARY=yes]))
-AC_SUBST(INSTALL_STATIC_LIBRARY)
-
+[begin]_group "build section" && {
 AC_CACHE_CHECK([for prefix of external symbols], rb_cv_symbol_prefix, [
     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[extern void conftest_external(void) {}]], [[]])],[
 	rb_cv_symbol_prefix=`$NM conftest.$ac_objext |
@@ -3853,6 +4145,25 @@ AC_CACHE_CHECK([for prefix of external symbols], rb_cv_symbol_prefix, [
 ])
 SYMBOL_PREFIX="$rb_cv_symbol_prefix"
 test "x$SYMBOL_PREFIX" = xNONE && SYMBOL_PREFIX=''
+
+AS_IF([test x"$SOEXT" = xdll], [
+    # DLL on Windows is managed by win32/mkexports.rb
+], [test x"$enable_shared" = xyes], [
+    AC_CACHE_CHECK([for default symbols in empty shared library], rb_cv_symbols_in_emptylib, [
+        save_CC="$CC"
+        eval CC=\"`printf "%s" "${DLDSHARED}" | sed ['s/\$(CC)/${CC}/']`\"
+        AC_LINK_IFELSE([AC_LANG_PROGRAM()],[
+            rb_cv_symbols_in_emptylib=`$NM -Pgp conftest$ac_exeext |
+                sed ["/ [A-TV-Z] .*/!d;s///;s/^${SYMBOL_PREFIX}//;/^main$/d"]`
+        ])
+        set dummy ${rb_cv_symbols_in_emptylib}
+        shift
+        rb_cv_symbols_in_emptylib="$*"
+        CC="$save_CC"
+    ])
+])
+AC_SUBST(XSYMBOLS_IN_EMPTYLIB, "${rb_cv_symbols_in_emptylib}")
+
 DLNOBJ=dln.o
 AC_ARG_ENABLE(dln,
 	      AS_HELP_STRING([--disable-dln], [disable dynamic link feature]),
@@ -3867,7 +4178,8 @@ AS_CASE(["$target_os"],
 	RUBY_APPEND_OPTION(CFLAGS, -pipe)
 	],
     [darwin*], [
-	RUBY_APPEND_OPTION(CFLAGS, -pipe)
+	RUBY_TRY_CFLAGS(-pipe, [pipe_opt=yes], [pipe_opt=no])
+	AS_IF([test $pipe_opt = yes], [RUBY_APPEND_OPTION(CFLAGS, -pipe)])
         AC_MSG_CHECKING([whether Security framework is needed])
 	AC_COMPILE_IFELSE([
 	    AC_LANG_BOOL_COMPILE_TRY([
@@ -3920,6 +4232,7 @@ enum {
 	[mingw*], [
 	    AS_IF([test x"$enable_shared" = xyes], [
 		LIBRUBY_SO='$(RUBY_SO_NAME)'.dll
+		LIBRUBY_SONAME=''
 		LIBRUBY_DLDFLAGS="${LIBRUBY_DLDFLAGS}"' $(RUBYDEF)'
 	    ])
 	    EXPORT_PREFIX=' '
@@ -3932,7 +4245,6 @@ enum {
 	    PLATFORM_DIR=win32
 	    ])
 	LIBRUBY_ALIASES=''
-	FIRSTMAKEFILE=GNUmakefile:cygwin/GNUmakefile.in
 	AS_IF([test x"$enable_shared" = xyes], [
 	    LIBRUBY='lib$(RUBY_SO_NAME).dll.a'
 	], [
@@ -3942,7 +4254,6 @@ enum {
 	])
 	],
     [wasi*], [
-        FIRSTMAKEFILE=GNUmakefile:wasm/GNUmakefile.in
         AC_LIBOBJ([wasm/missing])
         AC_LIBOBJ([wasm/runtime])
         AC_LIBOBJ([wasm/fiber])
@@ -3959,21 +4270,6 @@ 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 ${MAKE-make}])
     mkdir conftest.dir
@@ -4030,8 +4326,9 @@ AS_IF([test "${universal_binary-no}" = yes ], [
 		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']`}
+[end]_group
 
 MAINLIBS="$LIBS"
 LIBS=$ORIG_LIBS
@@ -4056,15 +4353,34 @@ AS_IF([test "${ARCH_FLAG}"], [
     CXXFLAGS=`echo "$CXXFLAGS" | sed "s| *$archflagpat"'||'`
     LDFLAGS=`echo "$LDFLAGS" | sed "s| *$archflagpat"'||'`
 ])
+AS_CASE([" $rb_cv_warnflags "], [*" -Wshorten-64-to-32 "*|*" -Werror=shorten-64-to-32 "*], [
+    voidp_ll=
+    AS_CASE([$ac_cv_sizeof_voidp],
+    [SIZEOF_LONG_LONG], [voidp_ll=true],
+    [@<:@0-9@:>@*], [
+        AS_IF([test $ac_cv_sizeof_voidp -gt $ac_cv_sizeof_long], [voidp_ll=true])
+    ])
+    AS_IF([test "$voidp_ll"], [
+        # Disable the shorten-64-to-32 warning for now, because it currently
+        # generates a lot of warnings on platforms where `sizeof(void*)` is
+        # larger than `sizeof(long)`.
+        #
+        # TODO: Replace `long` with `ptrdiff_t` or something in the all sources.
+        rb_cv_warnflags=`echo "$rb_cv_warnflags" |
+           sed -e 's/ -W\(shorten-64-to-32 \)/ -Wno-\1/' \
+               -e 's/ -Werror=\(shorten-64-to-32 \)/ -Wno-\1/'`
+    ])
+])
 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} ${warnflags}'])dnl
+AC_SUBST(cflags, ['${hardenflags} '"${orig_cflags:+$orig_cflags }"' ${optflags} ${debugflags} ${warnflags}'])dnl
 AC_SUBST(cxxflags)dnl
 AC_SUBST(optflags)dnl
 AC_SUBST(debugflags)dnl
 AC_SUBST(warnflags)dnl
 AC_SUBST(strict_warnflags)dnl
+AC_SUBST(hardenflags)dnl
 AC_SUBST(XCFLAGS)dnl
 AC_SUBST(XLDFLAGS)dnl
 AC_SUBST(EXTLDFLAGS)dnl
@@ -4248,6 +4564,10 @@ AS_IF([test "${universal_binary-no}" = yes ], [
         arch="${target_cpu}-${target_os}"
     ])
     AC_DEFINE_UNQUOTED(RUBY_PLATFORM, "$arch")
+
+    AS_IF([test "$arch" = "s390x-linux"], [
+       AC_DEFINE_UNQUOTED(USE_MN_THREADS, 0)
+    ])
 ])
 
 unset sitearch
@@ -4345,6 +4665,17 @@ AS_IF([test x"$enable_rubygems" = xno], [
 ])
 AC_SUBST(USE_RUBYGEMS)
 
+m4_define(available_parsers, [parse.y, prism])
+AC_ARG_WITH(parser,
+    AS_HELP_STRING([--with-parser=PARSER],
+        [specify default parser; PARSER is one of ]m4_join([, ],available_parsers)),
+    [], [with_parser=prism])
+AS_CASE([$with_parser],
+m4_foreach(parser, [available_parsers],
+    parser[,][AC_DEFINE_UNQUOTED(RB_DEFAULT_PARSER, RB_DEFAULT_PARSER_[]AS_TR_CPP(parser)),])
+    [AC_MSG_ERROR([Unknown parser: $with_parser])]
+)
+
 arch_hdrdir="${EXTOUT}/include/${arch}/ruby"
 AS_MKDIR_P("${arch_hdrdir}")
 config_h="${arch_hdrdir}/config.h"
@@ -4352,7 +4683,7 @@ guard=INCLUDE_RUBY_CONFIG_H
 {
   echo "#ifndef $guard"
   echo "#define $guard 1"
-  grep -v "^#define PACKAGE_" confdefs.h
+  sed "/^@%:@define PACKAGE_/d;s/  *$//" confdefs.h
   echo "#endif /* $guard */"
 } | tr -d '\015' |
 (
@@ -4431,8 +4762,12 @@ AC_CONFIG_FILES(Makefile:template/Makefile.in, [
 	sed '/^MISSING/s/\$U\././g;/^VCS *=/s#@VCS@#'"$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
+	    # extract NMake-style include list
+	    set = `sed -n 's/^!include  *//p' ${srcdir}/common.mk`
+	    echo common_mk_includes "@S|@*" # generate the macro assignment
+	    shift
+	    common_mk_includes="`echo \"@S|@*\" | sed 's|\$(srcdir)|.|g'`"
+	    (PWD= cd ${srcdir} && sed -f tool/prereq.status common.mk ${common_mk_includes})
             AS_IF([test "$YJIT_SUPPORT" = yes], [
                 cat ${srcdir}/yjit/not_gmake.mk
                 echo ['$(MKFILES): ${srcdir}/yjit/not_gmake.mk']
@@ -4440,20 +4775,10 @@ AC_CONFIG_FILES(Makefile:template/Makefile.in, [
 	], [
 	    echo 'distclean-local::; @$(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 $tmpmk Makefile],
+
+	echo; echo '$(srcdir)/$(CONFIGURE):RUBY_M4_INCLUDED \
+	$(empty)'
+    } > $tmpmk && mv -f $tmpmk Makefile],
 [EXEEXT='$EXEEXT' MAKE='${MAKE-make}' gnumake='$gnumake' GIT='$GIT' YJIT_SUPPORT='$YJIT_SUPPORT'])
 
 AC_ARG_WITH([ruby-pc],
@@ -4468,9 +4793,13 @@ AC_ARG_WITH(destdir,
 	    [DESTDIR="$withval"])
 AC_SUBST(DESTDIR)
 
+AS_IF([test "x$load_relative:$DESTDIR" = xyes:], [
+    AS_IF([test "x$prefix" = xNONE], [DESTDIR="$ac_default_prefix"], [DESTDIR="$prefix"])
+    prefix=/.
+])
+
 AC_OUTPUT
 }
-}
 
 AS_IF([test "$silent" = yes], [], [
 AS_IF([${FOLD+:} false], [], [
@@ -4507,6 +4836,7 @@ config_summary "target OS"           "$target_os"
 config_summary "compiler"            "$CC"
 config_summary "with thread"         "$THREAD_MODEL"
 config_summary "with coroutine"      "$coroutine_type"
+config_summary "with modular GC"     "$modular_gc_summary"
 config_summary "enable shared libs"  "$ENABLE_SHARED"
 config_summary "dynamic library ext" "$DLEXT"
 config_summary "CFLAGS"              "$cflags"
@@ -4516,10 +4846,12 @@ config_summary "DLDFLAGS"            "$DLDFLAGS"
 config_summary "optflags"            "$optflags"
 config_summary "debugflags"          "$debugflags"
 config_summary "warnflags"           "$warnflags"
+config_summary "hardenflags"         "$hardenflags"
 config_summary "strip command"       "$STRIP"
 config_summary "install doc"         "$DOCTARGETS"
-config_summary "MJIT support"        "$MJIT_SUPPORT"
 config_summary "YJIT support"        "$YJIT_SUPPORT"
+config_summary "ZJIT support"        "$ZJIT_SUPPORT"
+config_summary "RUSTC_FLAGS"         "$RUSTC_FLAGS"
 config_summary "man page type"       "$MANTYPE"
 config_summary "search path"         "$search_path"
 config_summary "static-linked-ext"   ${EXTSTATIC:+"yes"}
diff --git a/constant.h b/constant.h
index e0d36909e1..90a68d447a 100644
--- a/constant.h
+++ b/constant.h
@@ -43,13 +43,11 @@ 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
index a85b7fc2d1..8af093a316 100644
--- a/cont.c
+++ b/cont.c
@@ -26,14 +26,16 @@ extern int madvise(caddr_t, size_t, int);
 #include COROUTINE_H
 
 #include "eval_intern.h"
-#include "gc.h"
 #include "internal.h"
 #include "internal/cont.h"
+#include "internal/thread.h"
+#include "internal/error.h"
+#include "internal/eval.h"
+#include "internal/gc.h"
 #include "internal/proc.h"
 #include "internal/sanitizers.h"
 #include "internal/warnings.h"
 #include "ruby/fiber/scheduler.h"
-#include "mjit.h"
 #include "yjit.h"
 #include "vm_core.h"
 #include "vm_sync.h"
@@ -46,7 +48,8 @@ static const int DEBUG = 0;
 #define RB_PAGE_MASK (~(RB_PAGE_SIZE - 1))
 static long pagesize;
 
-static const rb_data_type_t cont_data_type, fiber_data_type;
+static const rb_data_type_t rb_cont_data_type;
+static const rb_data_type_t rb_fiber_data_type;
 static VALUE rb_cContinuation;
 static VALUE rb_cFiber;
 static VALUE rb_eFiberError;
@@ -69,8 +72,6 @@ static VALUE rb_cFiberPool;
 #define FIBER_POOL_ALLOCATION_FREE
 #endif
 
-#define jit_cont_enabled (mjit_enabled || rb_yjit_enabled_p())
-
 enum context_type {
     CONTINUATION_CONTEXT = 0,
     FIBER_CONTEXT = 1
@@ -177,7 +178,7 @@ 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":
+    // Free list that provides O(1) stack "allocation".
     struct fiber_pool_vacancy * vacancies;
 
     // The size of the stack allocations (excluding any guard page).
@@ -189,13 +190,15 @@ struct fiber_pool {
     // The initial number of stacks to allocate.
     size_t initial_count;
 
-    // Whether to madvise(free) the stack or not:
+    // Whether to madvise(free) the stack or not.
+    // If this value is set to 1, the stack will be madvise(free)ed
+    // (or equivalent), where possible, when it is returned to the pool.
     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:
+    // The amount to allocate for the vm_stack.
     size_t vm_stack_size;
 };
 
@@ -224,22 +227,21 @@ typedef struct rb_context_struct {
     } machine;
     rb_execution_context_t saved_ec;
     rb_jmpbuf_t jmpbuf;
-    rb_ensure_entry_t *ensure_array;
     struct rb_jit_cont *jit_cont; // Continuation contexts for JITs
 } rb_context_t;
 
-
 /*
  * Fiber status:
- *    [Fiber.new] ------> FIBER_CREATED
- *                        | [Fiber#resume]
- *                        v
- *                   +--> FIBER_RESUMED ----+
- *    [Fiber#resume] |    | [Fiber.yield]   |
- *                   |    v                 |
- *                   +-- FIBER_SUSPENDED    | [Terminate]
- *                                          |
- *                       FIBER_TERMINATED <-+
+ *    [Fiber.new] ------> FIBER_CREATED ----> [Fiber#kill] --> |
+ *                        | [Fiber#resume]                     |
+ *                        v                                    |
+ *                   +--> FIBER_RESUMED ----> [return] ------> |
+ *    [Fiber#resume] |    | [Fiber.yield/transfer]             |
+ *  [Fiber#transfer] |    v                                    |
+ *                   +--- FIBER_SUSPENDED --> [Fiber#kill] --> |
+ *                                                             |
+ *                                                             |
+ *                        FIBER_TERMINATED <-------------------+
  */
 enum fiber_status {
     FIBER_CREATED,
@@ -265,13 +267,26 @@ struct rb_fiber_struct {
     unsigned int yielding : 1;
     unsigned int blocking : 1;
 
+    unsigned int killed : 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};
+void
+rb_free_shared_fiber_pool(void)
+{
+    struct fiber_pool_allocation *allocations = shared_fiber_pool.allocations;
+    while (allocations) {
+        struct fiber_pool_allocation *next = allocations->next;
+        xfree(allocations);
+        allocations = next;
+    }
+}
+
+static ID fiber_initialize_keywords[3] = {0};
 
 /*
  * FreeBSD require a first (i.e. addr) argument of mmap(2) is not NULL
@@ -466,18 +481,20 @@ fiber_pool_allocate_memory(size_t * count, size_t stride)
         }
 #else
         errno = 0;
-        void * base = mmap(NULL, (*count)*stride, PROT_READ | PROT_WRITE, FIBER_STACK_FLAGS, -1, 0);
+        size_t mmap_size = (*count)*stride;
+        void * base = mmap(NULL, mmap_size, 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 {
+            ruby_annotate_mmap(base, mmap_size, "Ruby:fiber_pool_allocate_memory");
 #if defined(MADV_FREE_REUSE)
             // On Mac MADV_FREE_REUSE is necessary for the task_info api
             // to keep the accounting accurate as possible when a page is marked as reusable
             // it can possibly not occurring at first call thus re-iterating if necessary.
-            while (madvise(base, (*count)*stride, MADV_FREE_REUSE) == -1 && errno == EAGAIN);
+            while (madvise(base, mmap_size, MADV_FREE_REUSE) == -1 && errno == EAGAIN);
 #endif
             return base;
         }
@@ -494,80 +511,87 @@ fiber_pool_allocate_memory(size_t * count, size_t stride)
 static struct fiber_pool_allocation *
 fiber_pool_expand(struct fiber_pool * fiber_pool, size_t count)
 {
-    STACK_GROW_DIR_DETECTION;
+    struct fiber_pool_allocation * allocation;
+    RB_VM_LOCK_ENTER();
+    {
+        STACK_GROW_DIR_DETECTION;
 
-    size_t size = fiber_pool->size;
-    size_t stride = size + RB_PAGE_SIZE;
+        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);
+        // 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);
-    }
+        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);
+        struct fiber_pool_vacancy * vacancies = fiber_pool->vacancies;
+        allocation = RB_ALLOC(struct fiber_pool_allocation);
 
-    // Initialize fiber pool allocation:
-    allocation->base = base;
-    allocation->size = size;
-    allocation->stride = stride;
-    allocation->count = count;
+        // Initialize fiber pool allocation:
+        allocation->base = base;
+        allocation->size = size;
+        allocation->stride = stride;
+        allocation->count = count;
 #ifdef FIBER_POOL_ALLOCATION_FREE
-    allocation->used = 0;
+        allocation->used = 0;
 #endif
-    allocation->pool = fiber_pool;
+        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 (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;
+            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);
-        }
+            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);
+            }
+#elif defined(__wasi__)
+            // wasi-libc's mprotect emulation doesn't support PROT_NONE.
+            (void)page;
 #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);
-        }
+            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
-        );
+            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;
+            vacancies->stack.allocation = allocation;
 #endif
-    }
+        }
 
-    // Insert the allocation into the head of the pool:
-    allocation->next = fiber_pool->allocations;
+        // 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;
-    }
+        if (allocation->next) {
+            allocation->next->previous = allocation;
+        }
 
-    allocation->previous = NULL;
+        allocation->previous = NULL;
 #endif
 
-    fiber_pool->allocations = allocation;
-    fiber_pool->vacancies = vacancies;
-    fiber_pool->count += count;
+        fiber_pool->allocations = allocation;
+        fiber_pool->vacancies = vacancies;
+        fiber_pool->count += count;
+    }
+    RB_VM_LOCK_LEAVE();
 
     return allocation;
 }
@@ -641,41 +665,46 @@ fiber_pool_allocation_free(struct fiber_pool_allocation * allocation)
 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);
+    struct fiber_pool_vacancy * vacancy ;
+    RB_VM_LOCK_ENTER();
+    {
+        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 (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;
+        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;
+            size_t count = fiber_pool->count;
+            if (count > maximum) count = maximum;
+            if (count < minimum) count = minimum;
 
-        fiber_pool_expand(fiber_pool, count);
+            fiber_pool_expand(fiber_pool, count);
 
-        // The free list should now contain some stacks:
-        VM_ASSERT(fiber_pool->vacancies);
+            // The free list should now contain some stacks:
+            VM_ASSERT(fiber_pool->vacancies);
 
-        vacancy = fiber_pool_vacancy_pop(fiber_pool);
-    }
+            vacancy = fiber_pool_vacancy_pop(fiber_pool);
+        }
 
-    VM_ASSERT(vacancy);
-    VM_ASSERT(vacancy->stack.base);
+        VM_ASSERT(vacancy);
+        VM_ASSERT(vacancy->stack.base);
 
 #if defined(COROUTINE_SANITIZE_ADDRESS)
-    __asan_unpoison_memory_region(fiber_pool_stack_poison_base(&vacancy->stack), fiber_pool_stack_poison_size(&vacancy->stack));
+        __asan_unpoison_memory_region(fiber_pool_stack_poison_base(&vacancy->stack), fiber_pool_stack_poison_size(&vacancy->stack));
 #endif
 
-    // Take the top item from the free list:
-    fiber_pool->used += 1;
+        // Take the top item from the free list:
+        fiber_pool->used += 1;
 
 #ifdef FIBER_POOL_ALLOCATION_FREE
-    vacancy->stack.allocation->used += 1;
+        vacancy->stack.allocation->used += 1;
 #endif
 
-    fiber_pool_stack_reset(&vacancy->stack);
+        fiber_pool_stack_reset(&vacancy->stack);
+    }
+    RB_VM_LOCK_LEAVE();
 
     return vacancy->stack;
 }
@@ -691,7 +720,9 @@ fiber_pool_stack_free(struct fiber_pool_stack * stack)
     // 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);
+    int advice = stack->pool->free_stacks >> 1;
+
+    if (DEBUG) fprintf(stderr, "fiber_pool_stack_free: %p+%"PRIuSIZE" [base=%p, size=%"PRIuSIZE"] advice=%d\n", base, size, stack->base, stack->size, advice);
 
     // The pages being used by the stack can be returned back to the system.
     // That doesn't change the page mapping, but it does allow the system to
@@ -705,24 +736,29 @@ fiber_pool_stack_free(struct fiber_pool_stack * stack)
 #ifdef __wasi__
     // WebAssembly doesn't support madvise, so we just don't do anything.
 #elif VM_CHECK_MODE > 0 && defined(MADV_DONTNEED)
+    if (!advice) advice = MADV_DONTNEED;
     // This immediately discards the pages and the memory is reset to zero.
-    madvise(base, size, MADV_DONTNEED);
+    madvise(base, size, advice);
 #elif defined(MADV_FREE_REUSABLE)
+    if (!advice) advice = MADV_FREE_REUSABLE;
     // Darwin / macOS / iOS.
     // Acknowledge the kernel down to the task info api we make this
     // page reusable for future use.
-    // As for MADV_FREE_REUSE below we ensure in the rare occasions the task was not
+    // As for MADV_FREE_REUSABLE below we ensure in the rare occasions the task was not
     // completed at the time of the call to re-iterate.
-    while (madvise(base, size, MADV_FREE_REUSABLE) == -1 && errno == EAGAIN);
+    while (madvise(base, size, advice) == -1 && errno == EAGAIN);
 #elif defined(MADV_FREE)
+    if (!advice) advice = MADV_FREE;
     // Recent Linux.
-    madvise(base, size, MADV_FREE);
+    madvise(base, size, advice);
 #elif defined(MADV_DONTNEED)
+    if (!advice) advice = MADV_DONTNEED;
     // Old Linux.
-    madvise(base, size, MADV_DONTNEED);
+    madvise(base, size, advice);
 #elif defined(POSIX_MADV_DONTNEED)
+    if (!advice) advice = POSIX_MADV_DONTNEED;
     // Solaris?
-    posix_madvise(base, size, POSIX_MADV_DONTNEED);
+    posix_madvise(base, size, advice);
 #elif defined(_WIN32)
     VirtualAlloc(base, size, MEM_RESET, PAGE_READWRITE);
     // Not available in all versions of Windows.
@@ -779,6 +815,9 @@ static inline void
 ec_switch(rb_thread_t *th, rb_fiber_t *fiber)
 {
     rb_execution_context_t *ec = &fiber->cont.saved_ec;
+#ifdef RUBY_ASAN_ENABLED
+    ec->machine.asan_fake_stack_handle = asan_get_thread_fake_stack_handle();
+#endif
     rb_ractor_set_current_ec(th->ractor, th->ec = ec);
     // ruby_current_execution_context_ptr = th->ec = ec;
 
@@ -801,6 +840,10 @@ fiber_restore_thread(rb_thread_t *th, rb_fiber_t *fiber)
     VM_ASSERT(th->ec->fiber_ptr == fiber);
 }
 
+#ifndef COROUTINE_DECL
+# define COROUTINE_DECL COROUTINE
+#endif
+NORETURN(static COROUTINE_DECL fiber_entry(struct coroutine_context * from, struct coroutine_context * to));
 static COROUTINE
 fiber_entry(struct coroutine_context * from, struct coroutine_context * to)
 {
@@ -878,6 +921,17 @@ fiber_stack_release(rb_fiber_t * fiber)
     rb_ec_clear_vm_stack(ec);
 }
 
+static void
+fiber_stack_release_locked(rb_fiber_t *fiber)
+{
+    if (!ruby_vm_during_cleanup) {
+        // We can't try to acquire the VM lock here because MMTK calls free in its own native thread which has no ec.
+        // This assertion will fail on MMTK but we currently don't have CI for debug releases of MMTK, so we can assert for now.
+        ASSERT_vm_locking_with_barrier();
+    }
+    fiber_stack_release(fiber);
+}
+
 static const char *
 fiber_status_name(enum fiber_status s)
 {
@@ -899,7 +953,9 @@ fiber_verify(const rb_fiber_t *fiber)
 
     switch (fiber->status) {
       case FIBER_RESUMED:
-        VM_ASSERT(fiber->cont.saved_ec.vm_stack != NULL);
+        if (fiber->cont.saved_ec.thread_ptr->self == 0) {
+            VM_ASSERT(fiber->cont.saved_ec.vm_stack != NULL);
+        }
         break;
       case FIBER_SUSPENDED:
         VM_ASSERT(fiber->cont.saved_ec.vm_stack != NULL);
@@ -929,7 +985,7 @@ cont_ptr(VALUE obj)
 {
     rb_context_t *cont;
 
-    TypedData_Get_Struct(obj, rb_context_t, &cont_data_type, cont);
+    TypedData_Get_Struct(obj, rb_context_t, &rb_cont_data_type, cont);
 
     return cont;
 }
@@ -939,7 +995,7 @@ fiber_ptr(VALUE obj)
 {
     rb_fiber_t *fiber;
 
-    TypedData_Get_Struct(obj, rb_fiber_t, &fiber_data_type, fiber);
+    TypedData_Get_Struct(obj, rb_fiber_t, &rb_fiber_data_type, fiber);
     if (!fiber) rb_raise(rb_eFiberError, "uninitialized fiber");
 
     return fiber;
@@ -1006,13 +1062,8 @@ cont_mark(void *ptr)
                                  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);
-            }
+            /* fiber machine context is marked as part of rb_execution_context_mark, no need to
+             * do anything here. */
         }
     }
 
@@ -1038,21 +1089,18 @@ cont_free(void *ptr)
 
     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);
-        fiber_stack_release(fiber);
+        fiber_stack_release_locked(fiber);
     }
 
     RUBY_FREE_UNLESS_NULL(cont->saved_vm_stack.ptr);
 
-    if (jit_cont_enabled) {
-        VM_ASSERT(cont->jit_cont != NULL);
-        jit_cont_free(cont->jit_cont);
-    }
+    VM_ASSERT(cont->jit_cont != NULL);
+    jit_cont_free(cont->jit_cont);
     /* free rb_cont_t or rb_fiber_t */
     ruby_xfree(ptr);
     RUBY_FREE_LEAVE("cont");
@@ -1095,12 +1143,7 @@ rb_fiber_update_self(rb_fiber_t *fiber)
 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);
-    }
+    rb_gc_mark_movable(fiber->cont.self);
 }
 
 static void
@@ -1156,7 +1199,9 @@ fiber_memsize(const void *ptr)
      */
     if (saved_ec->local_storage && fiber != th->root_fiber) {
         size += rb_id_table_memsize(saved_ec->local_storage);
+        size += rb_obj_memsize_of(saved_ec->storage);
     }
+
     size += cont_memsize(&fiber->cont);
     return size;
 }
@@ -1164,7 +1209,7 @@ fiber_memsize(const void *ptr)
 VALUE
 rb_obj_is_fiber(VALUE obj)
 {
-    return RBOOL(rb_typeddata_is_kind_of(obj, &fiber_data_type));
+    return RBOOL(rb_typeddata_is_kind_of(obj, &rb_fiber_data_type));
 }
 
 static void
@@ -1195,9 +1240,23 @@ cont_save_machine_stack(rb_thread_t *th, rb_context_t *cont)
     MEMCPY(cont->machine.stack, cont->machine.stack_src, VALUE, size);
 }
 
-static const rb_data_type_t cont_data_type = {
+static void
+cont_handle_weak_references(void *ptr)
+{
+    rb_context_t *cont = ptr;
+
+    if (!cont) return;
+
+    if (!rb_gc_handle_weak_references_alive_p(cont->saved_ec.gen_fields_cache.obj) ||
+            !rb_gc_handle_weak_references_alive_p(cont->saved_ec.gen_fields_cache.fields_obj)) {
+        cont->saved_ec.gen_fields_cache.obj = Qundef;
+        cont->saved_ec.gen_fields_cache.fields_obj = Qundef;
+    }
+}
+
+static const rb_data_type_t rb_cont_data_type = {
     "continuation",
-    {cont_mark, cont_free, cont_memsize, cont_compact},
+    {cont_mark, cont_free, cont_memsize, cont_compact, cont_handle_weak_references},
     0, 0, RUBY_TYPED_FREE_IMMEDIATELY
 };
 
@@ -1252,6 +1311,8 @@ jit_cont_new(rb_execution_context_t *ec)
 static void
 jit_cont_free(struct rb_jit_cont *cont)
 {
+    if (!cont) return;
+
     rb_native_mutex_lock(&jit_cont_lock);
     if (cont == first_jit_cont) {
         first_jit_cont = cont->next;
@@ -1277,26 +1338,42 @@ rb_jit_cont_each_iseq(rb_iseq_callback callback, void *data)
         if (cont->ec->vm_stack == NULL)
             continue;
 
-        const rb_control_frame_t *cfp;
-        for (cfp = RUBY_VM_END_CONTROL_FRAME(cont->ec) - 1; ; cfp = RUBY_VM_NEXT_CONTROL_FRAME(cfp)) {
-            const rb_iseq_t *iseq;
-            if (cfp->pc && (iseq = cfp->iseq) != NULL && imemo_type((VALUE)iseq) == imemo_iseq) {
-                callback(iseq, data);
+        const rb_control_frame_t *cfp = cont->ec->cfp;
+        while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(cont->ec, cfp)) {
+            if (cfp->pc && cfp->iseq && imemo_type((VALUE)cfp->iseq) == imemo_iseq) {
+                callback(cfp->iseq, data);
             }
+            cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+        }
+    }
+}
 
-            if (cfp == cont->ec->cfp)
-                break; // reached the most recent cfp
+#if USE_YJIT
+// Update the jit_return of all CFPs to leave_exit unless it's leave_exception or not set.
+// This prevents jit_exec_exception from jumping to the caller after invalidation.
+void
+rb_yjit_cancel_jit_return(void *leave_exit, void *leave_exception)
+{
+    struct rb_jit_cont *cont;
+    for (cont = first_jit_cont; cont != NULL; cont = cont->next) {
+        if (cont->ec->vm_stack == NULL)
+            continue;
+
+        const rb_control_frame_t *cfp = cont->ec->cfp;
+        while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(cont->ec, cfp)) {
+            if (cfp->jit_return && cfp->jit_return != leave_exception) {
+                ((rb_control_frame_t *)cfp)->jit_return = leave_exit;
+            }
+            cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
         }
     }
 }
+#endif
 
 // Finish working with jit_cont.
 void
 rb_jit_cont_finish(void)
 {
-    if (!jit_cont_enabled)
-        return;
-
     struct rb_jit_cont *cont, *next;
     for (cont = first_jit_cont; cont != NULL; cont = next) {
         next = cont->next;
@@ -1309,9 +1386,8 @@ static void
 cont_init_jit_cont(rb_context_t *cont)
 {
     VM_ASSERT(cont->jit_cont == NULL);
-    if (jit_cont_enabled) {
-        cont->jit_cont = jit_cont_new(&(cont->saved_ec));
-    }
+    // We always allocate this since YJIT may be enabled later
+    cont->jit_cont = jit_cont_new(&(cont->saved_ec));
 }
 
 struct rb_execution_context_struct *
@@ -1340,7 +1416,8 @@ cont_new(VALUE klass)
     rb_thread_t *th = GET_THREAD();
 
     THREAD_MUST_BE_RUNNING(th);
-    contval = TypedData_Make_Struct(klass, rb_context_t, &cont_data_type, cont);
+    contval = TypedData_Make_Struct(klass, rb_context_t, &rb_cont_data_type, cont);
+    rb_gc_declare_weak_references(contval);
     cont->self = contval;
     cont_init(cont, th);
     return cont;
@@ -1358,15 +1435,11 @@ rb_fiberptr_blocking(struct rb_fiber_struct *fiber)
     return fiber->blocking;
 }
 
-// Start working with jit_cont.
+// Initialize the jit_cont_lock
 void
 rb_jit_cont_init(void)
 {
-    if (!jit_cont_enabled)
-        return;
-
     rb_native_mutex_initialize(&jit_cont_lock);
-    cont_init_jit_cont(&GET_EC()->fiber_ptr->cont);
 }
 
 #if 0
@@ -1430,22 +1503,6 @@ cont_capture(volatile int *volatile stat)
     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_hidden_new(0); /* dummy object */
-            *entry++ = p->entry;
-        }
-        entry->marker = 0;
-    }
-
     if (ruby_setjmp(cont->jmpbuf)) {
         VALUE value;
 
@@ -1488,6 +1545,51 @@ cont_restore_thread(rb_context_t *cont)
             rb_raise(rb_eRuntimeError, "can't call across trace_func");
         }
 
+#if defined(__wasm__) && !defined(__EMSCRIPTEN__)
+        if (th->ec->tag != sec->tag) {
+            /* find the lowest common ancestor tag of the current EC and the saved EC */
+
+            struct rb_vm_tag *lowest_common_ancestor = NULL;
+            size_t num_tags = 0;
+            size_t num_saved_tags = 0;
+            for (struct rb_vm_tag *tag = th->ec->tag; tag != NULL; tag = tag->prev) {
+                ++num_tags;
+            }
+            for (struct rb_vm_tag *tag = sec->tag; tag != NULL; tag = tag->prev) {
+                ++num_saved_tags;
+            }
+
+            size_t min_tags = num_tags <= num_saved_tags ? num_tags : num_saved_tags;
+
+            struct rb_vm_tag *tag = th->ec->tag;
+            while (num_tags > min_tags) {
+                tag = tag->prev;
+                --num_tags;
+            }
+
+            struct rb_vm_tag *saved_tag = sec->tag;
+            while (num_saved_tags > min_tags) {
+                saved_tag = saved_tag->prev;
+                --num_saved_tags;
+            }
+
+            while (min_tags > 0) {
+                if (tag == saved_tag) {
+                    lowest_common_ancestor = tag;
+                    break;
+                }
+                tag = tag->prev;
+                saved_tag = saved_tag->prev;
+                --min_tags;
+            }
+
+            /* free all the jump buffers between the current EC's tag and the lowest common ancestor tag */
+            for (struct rb_vm_tag *tag = th->ec->tag; tag != lowest_common_ancestor; tag = tag->prev) {
+                rb_vm_tag_jmpbuf_deinit(&tag->buf);
+            }
+        }
+#endif
+
         /* copy vm stack */
 #ifdef CAPTURE_JUST_VALID_VM_STACK
         MEMCPY(th->ec->vm_stack,
@@ -1506,7 +1608,6 @@ cont_restore_thread(rb_context_t *cont)
         th->ec->tag = sec->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);
@@ -1538,11 +1639,10 @@ fiber_setcontext(rb_fiber_t *new_fiber, rb_fiber_t *old_fiber)
         }
     }
 
-    /* exchange machine_stack_start between old_fiber and new_fiber */
+    /* these values are used in rb_gc_mark_machine_context to mark the fiber's stack. */
     old_fiber->cont.saved_ec.machine.stack_start = th->ec->machine.stack_start;
+    old_fiber->cont.saved_ec.machine.stack_end = FIBER_TERMINATED_P(old_fiber) ? NULL : th->ec->machine.stack_end;
 
-    /* old_fiber->machine.stack_end should be NULL */
-    old_fiber->cont.saved_ec.machine.stack_end = NULL;
 
     // if (DEBUG) fprintf(stderr, "fiber_setcontext: %p[%p] -> %p[%p]\n", (void*)old_fiber, old_fiber->stack.base, (void*)new_fiber, new_fiber->stack.base);
 
@@ -1576,9 +1676,9 @@ cont_restore_1(rb_context_t *cont)
     cont_restore_thread(cont);
 
     /* restore machine stack */
-#ifdef _M_AMD64
+#if (defined(_M_AMD64) && !defined(__MINGW64__)) || defined(_M_ARM64)
     {
-        /* workaround for x64 SEH */
+        /* workaround for x64 and arm64 SEH on Windows */
         jmp_buf buf;
         setjmp(buf);
         _JUMP_BUFFER *bp = (void*)&cont->jmpbuf;
@@ -1745,6 +1845,13 @@ rb_callcc(VALUE self)
         return rb_yield(val);
     }
 }
+#ifdef RUBY_ASAN_ENABLED
+/* callcc can't possibly work with ASAN; see bug #20273. Also this function
+ * definition below avoids a "defined and not used" warning. */
+MAYBE_UNUSED(static void notusing_callcc(void)) { rb_callcc(Qnil); }
+# define rb_callcc rb_f_notimplement
+#endif
+
 
 static VALUE
 make_passing_arg(int argc, const VALUE *argv)
@@ -1763,80 +1870,6 @@ make_passing_arg(int argc, const VALUE *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));
 
 /*
@@ -1868,7 +1901,6 @@ rb_cont_call(int argc, VALUE *argv, VALUE contval)
             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);
@@ -1945,7 +1977,7 @@ rb_cont_call(int argc, VALUE *argv, VALUE contval)
  *  == Non-blocking Fibers
  *
  *  The concept of <em>non-blocking fiber</em> was introduced in Ruby 3.0.
- *  A non-blocking fiber, when reaching a operation that would normally block
+ *  A non-blocking fiber, when reaching an operation that would normally block
  *  the fiber (like <code>sleep</code>, or wait for another process or I/O)
  *  will yield control to other fibers and allow the <em>scheduler</em> to
  *  handle blocking and waking up (resuming) this fiber when it can proceed.
@@ -1956,7 +1988,7 @@ rb_cont_call(int argc, VALUE *argv, VALUE contval)
  *  the current thread, blocking and non-blocking fibers' behavior is identical.
  *
  *  Ruby doesn't provide a scheduler class: it is expected to be implemented by
- *  the user and correspond to Fiber::SchedulerInterface.
+ *  the user and correspond to Fiber::Scheduler.
  *
  *  There is also Fiber.schedule method, which is expected to immediately perform
  *  the given block in a non-blocking manner. Its actual implementation is up to
@@ -1964,16 +1996,38 @@ rb_cont_call(int argc, VALUE *argv, VALUE contval)
  *
  */
 
-static const rb_data_type_t fiber_data_type = {
+static void
+fiber_handle_weak_references(void *ptr)
+{
+    rb_fiber_t *fiber = ptr;
+
+    if (!fiber) return;
+
+    if (!rb_gc_handle_weak_references_alive_p(fiber->cont.saved_ec.gen_fields_cache.obj) ||
+            !rb_gc_handle_weak_references_alive_p(fiber->cont.saved_ec.gen_fields_cache.fields_obj)) {
+        fiber->cont.saved_ec.gen_fields_cache.obj = Qundef;
+        fiber->cont.saved_ec.gen_fields_cache.fields_obj = Qundef;
+    }
+}
+
+static const rb_data_type_t rb_fiber_data_type = {
     "fiber",
-    {fiber_mark, fiber_free, fiber_memsize, fiber_compact,},
+    {fiber_mark, fiber_free, fiber_memsize, fiber_compact, fiber_handle_weak_references},
     0, 0, RUBY_TYPED_FREE_IMMEDIATELY
 };
 
 static VALUE
 fiber_alloc(VALUE klass)
 {
-    return TypedData_Wrap_Struct(klass, &fiber_data_type, 0);
+    VALUE obj = TypedData_Wrap_Struct(klass, &rb_fiber_data_type, 0);
+    rb_gc_declare_weak_references(obj);
+    return obj;
+}
+
+static rb_serial_t
+next_ec_serial(rb_ractor_t *cr)
+{
+    return cr->next_ec_serial++;
 }
 
 static rb_fiber_t*
@@ -1991,9 +2045,11 @@ fiber_t_alloc(VALUE fiber_value, unsigned int blocking)
     fiber->cont.self = fiber_value;
     fiber->cont.type = FIBER_CONTEXT;
     fiber->blocking = blocking;
+    fiber->killed = 0;
     cont_init(&fiber->cont, th);
 
     fiber->cont.saved_ec.fiber_ptr = fiber;
+    fiber->cont.saved_ec.serial = next_ec_serial(th->ractor);
     rb_ec_clear_vm_stack(&fiber->cont.saved_ec);
 
     fiber->prev = NULL;
@@ -2007,11 +2063,198 @@ fiber_t_alloc(VALUE fiber_value, unsigned int blocking)
     return fiber;
 }
 
+static inline rb_fiber_t*
+fiber_current(void)
+{
+    rb_execution_context_t *ec = GET_EC();
+    return ec->fiber_ptr;
+}
+
+static inline VALUE
+current_fiber_storage(void)
+{
+    rb_execution_context_t *ec = GET_EC();
+    return ec->storage;
+}
+
+static inline VALUE
+inherit_fiber_storage(void)
+{
+    return rb_obj_dup(current_fiber_storage());
+}
+
+static inline void
+fiber_storage_set(struct rb_fiber_struct *fiber, VALUE storage)
+{
+    fiber->cont.saved_ec.storage = storage;
+}
+
+static inline VALUE
+fiber_storage_get(rb_fiber_t *fiber, int allocate)
+{
+    VALUE storage = fiber->cont.saved_ec.storage;
+    if (storage == Qnil && allocate) {
+        storage = rb_hash_new();
+        fiber_storage_set(fiber, storage);
+    }
+    return storage;
+}
+
+static void
+storage_access_must_be_from_same_fiber(VALUE self)
+{
+    rb_fiber_t *fiber = fiber_ptr(self);
+    rb_fiber_t *current = fiber_current();
+    if (fiber != current) {
+        rb_raise(rb_eArgError, "Fiber storage can only be accessed from the Fiber it belongs to");
+    }
+}
+
+/**
+ *  call-seq: fiber.storage -> hash (dup)
+ *
+ *  Returns a copy of the storage hash for the fiber. The method can only be called on the
+ *  Fiber.current.
+ */
 static VALUE
-fiber_initialize(VALUE self, VALUE proc, struct fiber_pool * fiber_pool, unsigned int blocking)
+rb_fiber_storage_get(VALUE self)
 {
+    storage_access_must_be_from_same_fiber(self);
+
+    VALUE storage = fiber_storage_get(fiber_ptr(self), FALSE);
+
+    if (storage == Qnil) {
+        return Qnil;
+    }
+    else {
+        return rb_obj_dup(storage);
+    }
+}
+
+static int
+fiber_storage_validate_each(VALUE key, VALUE value, VALUE _argument)
+{
+    Check_Type(key, T_SYMBOL);
+
+    return ST_CONTINUE;
+}
+
+static void
+fiber_storage_validate(VALUE value)
+{
+    // nil is an allowed value and will be lazily initialized.
+    if (value == Qnil) return;
+
+    if (!RB_TYPE_P(value, T_HASH)) {
+        rb_raise(rb_eTypeError, "storage must be a hash");
+    }
+
+    if (RB_OBJ_FROZEN(value)) {
+        rb_raise(rb_eFrozenError, "storage must not be frozen");
+    }
+
+    rb_hash_foreach(value, fiber_storage_validate_each, Qundef);
+}
+
+/**
+ *  call-seq: fiber.storage = hash
+ *
+ *  Sets the storage hash for the fiber. This feature is experimental
+ *  and may change in the future. The method can only be called on the
+ *  Fiber.current.
+ *
+ *  You should be careful about using this method as you may inadvertently clear
+ *  important fiber-storage state. You should mostly prefer to assign specific
+ *  keys in the storage using Fiber::[]=.
+ *
+ *  You can also use <tt>Fiber.new(storage: nil)</tt> to create a fiber with an empty
+ *  storage.
+ *
+ *  Example:
+ *
+ *    while request = request_queue.pop
+ *      # Reset the per-request state:
+ *      Fiber.current.storage = nil
+ *      handle_request(request)
+ *    end
+ */
+static VALUE
+rb_fiber_storage_set(VALUE self, VALUE value)
+{
+    if (rb_warning_category_enabled_p(RB_WARN_CATEGORY_EXPERIMENTAL)) {
+        rb_category_warn(RB_WARN_CATEGORY_EXPERIMENTAL,
+          "Fiber#storage= is experimental and may be removed in the future!");
+    }
+
+    storage_access_must_be_from_same_fiber(self);
+    fiber_storage_validate(value);
+
+    fiber_ptr(self)->cont.saved_ec.storage = rb_obj_dup(value);
+    return value;
+}
+
+/**
+ *  call-seq: Fiber[key] -> value
+ *
+ *  Returns the value of the fiber storage variable identified by +key+.
+ *
+ *  The +key+ must be a symbol, and the value is set by Fiber#[]= or
+ *  Fiber#storage.
+ *
+ *  See also Fiber::[]=.
+ */
+static VALUE
+rb_fiber_storage_aref(VALUE class, VALUE key)
+{
+    key = rb_to_symbol(key);
+
+    VALUE storage = fiber_storage_get(fiber_current(), FALSE);
+    if (storage == Qnil) return Qnil;
+
+    return rb_hash_aref(storage, key);
+}
+
+/**
+ *  call-seq: Fiber[key] = value
+ *
+ *  Assign +value+ to the fiber storage variable identified by +key+.
+ *  The variable is created if it doesn't exist.
+ *
+ *  +key+ must be a Symbol, otherwise a TypeError is raised.
+ *
+ *  See also Fiber::[].
+ */
+static VALUE
+rb_fiber_storage_aset(VALUE class, VALUE key, VALUE value)
+{
+    key = rb_to_symbol(key);
+
+    VALUE storage = fiber_storage_get(fiber_current(), value != Qnil);
+    if (storage == Qnil) return Qnil;
+
+    if (value == Qnil) {
+        return rb_hash_delete(storage, key);
+    }
+    else {
+        return rb_hash_aset(storage, key, value);
+    }
+}
+
+static VALUE
+fiber_initialize(VALUE self, VALUE proc, struct fiber_pool * fiber_pool, unsigned int blocking, VALUE storage)
+{
+    if (storage == Qundef || storage == Qtrue) {
+        // The default, inherit storage (dup) from the current fiber:
+        storage = inherit_fiber_storage();
+    }
+    else /* nil, hash, etc. */ {
+        fiber_storage_validate(storage);
+        storage = rb_obj_dup(storage);
+    }
+
     rb_fiber_t *fiber = fiber_t_alloc(self, blocking);
 
+    fiber->cont.saved_ec.storage = storage;
     fiber->first_proc = proc;
     fiber->stack.base = NULL;
     fiber->stack.pool = fiber_pool;
@@ -2044,54 +2287,90 @@ rb_fiber_pool_default(VALUE pool)
     return &shared_fiber_pool;
 }
 
+VALUE rb_fiber_inherit_storage(struct rb_execution_context_struct *ec, struct rb_fiber_struct *fiber)
+{
+    VALUE storage = rb_obj_dup(ec->storage);
+    fiber->cont.saved_ec.storage = storage;
+    return storage;
+}
+
 /* :nodoc: */
 static VALUE
 rb_fiber_initialize_kw(int argc, VALUE* argv, VALUE self, int kw_splat)
 {
     VALUE pool = Qnil;
     VALUE blocking = Qfalse;
+    VALUE storage = Qundef;
 
     if (kw_splat != RB_NO_KEYWORDS) {
         VALUE options = Qnil;
-        VALUE arguments[2] = {Qundef};
+        VALUE arguments[3] = {Qundef};
 
         argc = rb_scan_args_kw(kw_splat, argc, argv, ":", &options);
-        rb_get_kwargs(options, fiber_initialize_keywords, 0, 2, arguments);
+        rb_get_kwargs(options, fiber_initialize_keywords, 0, 3, arguments);
 
-        if (arguments[0] != Qundef) {
+        if (!UNDEF_P(arguments[0])) {
             blocking = arguments[0];
         }
 
-        if (arguments[1] != Qundef) {
+        if (!UNDEF_P(arguments[1])) {
             pool = arguments[1];
         }
+
+        storage = arguments[2];
     }
 
-    return fiber_initialize(self, rb_block_proc(), rb_fiber_pool_default(pool), RTEST(blocking));
+    return fiber_initialize(self, rb_block_proc(), rb_fiber_pool_default(pool), RTEST(blocking), storage);
 }
 
 /*
  *  call-seq:
- *     Fiber.new(blocking: false) { |*args| ... } -> fiber
+ *     Fiber.new(blocking: false, storage: true) { |*args| ... } -> fiber
  *
- *  Creates new Fiber. Initially, the fiber is not running and can be resumed with
- *  #resume. Arguments to the first #resume call will be passed to the block:
+ *  Creates new Fiber. Initially, the fiber is not running and can be resumed
+ *  with #resume. Arguments to the first #resume call will be passed to the
+ *  block:
  *
- *      f = Fiber.new do |initial|
- *         current = initial
- *         loop do
- *           puts "current: #{current.inspect}"
- *           current = Fiber.yield
- *         end
- *      end
- *      f.resume(100)     # prints: current: 100
- *      f.resume(1, 2, 3) # prints: current: [1, 2, 3]
- *      f.resume          # prints: current: nil
- *      # ... and so on ...
- *
- *  If <tt>blocking: false</tt> is passed to <tt>Fiber.new</tt>, _and_ current thread
- *  has a Fiber.scheduler defined, the Fiber becomes non-blocking (see "Non-blocking
- *  Fibers" section in class docs).
+ *    f = Fiber.new do |initial|
+ *       current = initial
+ *       loop do
+ *         puts "current: #{current.inspect}"
+ *         current = Fiber.yield
+ *       end
+ *    end
+ *    f.resume(100)     # prints: current: 100
+ *    f.resume(1, 2, 3) # prints: current: [1, 2, 3]
+ *    f.resume          # prints: current: nil
+ *    # ... and so on ...
+ *
+ *  If <tt>blocking: false</tt> is passed to <tt>Fiber.new</tt>, _and_ current
+ *  thread has a Fiber.scheduler defined, the Fiber becomes non-blocking (see
+ *  "Non-blocking Fibers" section in class docs).
+ *
+ *  If the <tt>storage</tt> is unspecified, the default is to inherit a copy of
+ *  the storage from the current fiber. This is the same as specifying
+ *  <tt>storage: true</tt>.
+ *
+ *    Fiber[:x] = 1
+ *    Fiber.new do
+ *      Fiber[:x] # => 1
+ *      Fiber[:x] = 2
+ *    end.resume
+ *    Fiber[:x] # => 1
+ *
+ *  If the given <tt>storage</tt> is <tt>nil</tt>, this function will lazy
+ *  initialize the internal storage, which starts as an empty hash.
+ *
+ *    Fiber[:x] = "Hello World"
+ *    Fiber.new(storage: nil) do
+ *      Fiber[:x] # nil
+ *    end
+ *
+ *  Otherwise, the given <tt>storage</tt> is used as the new fiber's storage,
+ *  and it must be an instance of Hash.
+ *
+ *  Explicitly using <tt>storage: true</tt> is currently experimental and may
+ *  change in the future.
  */
 static VALUE
 rb_fiber_initialize(int argc, VALUE* argv, VALUE self)
@@ -2100,9 +2379,15 @@ rb_fiber_initialize(int argc, VALUE* argv, VALUE self)
 }
 
 VALUE
+rb_fiber_new_storage(rb_block_call_func_t func, VALUE obj, VALUE storage)
+{
+    return fiber_initialize(fiber_alloc(rb_cFiber), rb_proc_new(func, obj), rb_fiber_pool_default(Qnil), 0, storage);
+}
+
+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);
+    return rb_fiber_new_storage(func, obj, Qtrue);
 }
 
 static VALUE
@@ -2156,7 +2441,7 @@ rb_fiber_s_schedule_kw(int argc, VALUE* argv, int kw_splat)
  *
  *  Note that the behavior described above is how the method is <em>expected</em>
  *  to behave, actual behavior is up to the current scheduler's implementation of
- *  Fiber::SchedulerInterface#fiber method. Ruby doesn't enforce this method to
+ *  Fiber::Scheduler#fiber method. Ruby doesn't enforce this method to
  *  behave in any particular way.
  *
  *  If the scheduler is not set, the method raises
@@ -2175,7 +2460,7 @@ rb_fiber_s_schedule(int argc, VALUE *argv, VALUE obj)
  *
  *  Returns the Fiber scheduler, that was last set for the current thread with Fiber.set_scheduler.
  *  Returns +nil+ if no scheduler is set (which is the default), and non-blocking fibers'
- #  behavior is the same as blocking.
+ *  behavior is the same as blocking.
  *  (see "Non-blocking fibers" section in class docs for details about the scheduler concept).
  *
  */
@@ -2209,7 +2494,7 @@ rb_fiber_current_scheduler(VALUE klass)
  *  thread will call scheduler's +close+ method on finalization (allowing the scheduler to
  *  properly manage all non-finished fibers).
  *
- *  +scheduler+ can be an object of any class corresponding to Fiber::SchedulerInterface. Its
+ *  +scheduler+ can be an object of any class corresponding to Fiber::Scheduler. Its
  *  implementation is up to the user.
  *
  *  See also the "Non-blocking fibers" section in class docs.
@@ -2230,7 +2515,6 @@ rb_fiber_start(rb_fiber_t *fiber)
 
     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));
@@ -2256,6 +2540,7 @@ rb_fiber_start(rb_fiber_t *fiber)
     }
     EC_POP_TAG();
 
+    int need_interrupt = TRUE;
     VALUE err = Qfalse;
     if (state) {
         err = th->ec->errinfo;
@@ -2264,72 +2549,67 @@ rb_fiber_start(rb_fiber_t *fiber)
         if (state == TAG_RAISE) {
             // noop...
         }
+        else if (state == TAG_FATAL && err == RUBY_FATAL_FIBER_KILLED) {
+            need_interrupt = FALSE;
+            err = Qfalse;
+        }
         else if (state == TAG_FATAL) {
             rb_threadptr_pending_interrupt_enque(th, err);
         }
         else {
             err = rb_vm_make_jump_tag_but_local_jump(state, err);
         }
-        need_interrupt = TRUE;
     }
 
     rb_fiber_terminate(fiber, need_interrupt, err);
 }
 
-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_RESUMED_P(fiber));
-
-    th->root_fiber = fiber;
-    DATA_PTR(fiber_value) = fiber;
-    fiber->cont.self = fiber_value;
-
-    coroutine_initialize_main(&fiber->context);
-
-    return fiber;
-}
-
 // Set up a "root fiber", which is the fiber that every Ractor has.
 void
 rb_threadptr_root_fiber_setup(rb_thread_t *th)
 {
-    rb_fiber_t *fiber = ruby_mimmalloc(sizeof(rb_fiber_t));
+    rb_fiber_t *fiber = ruby_mimcalloc(1, 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.serial = next_ec_serial(th->ractor);
     fiber->cont.saved_ec.thread_ptr = th;
     fiber->blocking = 1;
+    fiber->killed = 0;
     fiber_status_set(fiber, FIBER_RESUMED); /* skip CREATED */
+
+    coroutine_initialize_main(&fiber->context);
+
     th->ec = &fiber->cont.saved_ec;
-    // When rb_threadptr_root_fiber_setup is called for the first time, mjit_enabled and
-    // rb_yjit_enabled_p() are still false. So this does nothing and rb_jit_cont_init() that is
-    // called later will take care of it. However, you still have to call cont_init_jit_cont()
-    // here for other Ractors, which are not initialized by rb_jit_cont_init().
+
     cont_init_jit_cont(&fiber->cont);
 }
 
 void
+rb_root_fiber_obj_setup(rb_thread_t *th)
+{
+    rb_fiber_t *fiber = th->ec->fiber_ptr;
+    VALUE fiber_value = fiber_alloc(rb_cFiber);
+    DATA_PTR(fiber_value) = fiber;
+    fiber->cont.self = fiber_value;
+}
+
+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();
+        rb_execution_context_t *ec = rb_current_execution_context(false);
 
         VM_ASSERT(th->ec->fiber_ptr->cont.type == FIBER_CONTEXT);
         VM_ASSERT(th->ec->fiber_ptr->cont.self == 0);
 
-        if (th->ec == ec) {
+        if (ec && th->ec == ec) {
             rb_ractor_set_current_ec(th->ractor, NULL);
         }
         fiber_free(th->ec->fiber_ptr);
@@ -2349,16 +2629,6 @@ rb_threadptr_root_fiber_terminate(rb_thread_t *th)
 }
 
 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(bool terminate)
 {
     rb_fiber_t *fiber = fiber_current();
@@ -2397,15 +2667,7 @@ rb_fiber_current(void)
 static inline void
 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);
-    }
+    rb_fiber_t *fiber = th->ec->fiber_ptr;
 
     if (FIBER_CREATED_P(next_fiber)) {
         fiber_prepare_stack(next_fiber);
@@ -2420,6 +2682,19 @@ fiber_store(rb_fiber_t *next_fiber, rb_thread_t *th)
     fiber_setcontext(next_fiber, fiber);
 }
 
+static void
+fiber_check_killed(rb_fiber_t *fiber)
+{
+    VM_ASSERT(fiber == fiber_current());
+
+    if (fiber->killed) {
+        rb_thread_t *thread = fiber->cont.saved_ec.thread_ptr;
+
+        thread->ec->errinfo = RUBY_FATAL_FIBER_KILLED;
+        EC_JUMP_TAG(thread->ec, RUBY_TAG_FATAL);
+    }
+}
+
 static inline VALUE
 fiber_switch(rb_fiber_t *fiber, int argc, const VALUE *argv, int kw_splat, rb_fiber_t *resuming_fiber, bool yielding)
 {
@@ -2428,7 +2703,9 @@ fiber_switch(rb_fiber_t *fiber, int argc, const VALUE *argv, int kw_splat, rb_fi
     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->root_fiber == NULL) {
+        th->root_fiber = th->ec->fiber_ptr;
+    }
 
     if (th->ec->fiber_ptr == fiber) {
         /* ignore fiber context switch
@@ -2494,7 +2771,9 @@ fiber_switch(rb_fiber_t *fiber, int argc, const VALUE *argv, int kw_splat, rb_fi
     // We cannot free the stack until the pthread is joined:
 #ifndef COROUTINE_PTHREAD_CONTEXT
     if (resuming_fiber && FIBER_TERMINATED_P(fiber)) {
-        fiber_stack_release(fiber);
+        RB_VM_LOCKING() {
+            fiber_stack_release(fiber);
+        }
     }
 #endif
 
@@ -2508,7 +2787,14 @@ fiber_switch(rb_fiber_t *fiber, int argc, const VALUE *argv, int kw_splat, rb_fi
 
     current_fiber = th->ec->fiber_ptr;
     value = current_fiber->cont.value;
-    if (current_fiber->cont.argc == -1) rb_exc_raise(value);
+
+    fiber_check_killed(current_fiber);
+
+    if (current_fiber->cont.argc == -1) {
+        // Fiber#raise will trigger this path.
+        rb_exc_raise(value);
+    }
+
     return value;
 }
 
@@ -2544,6 +2830,8 @@ fiber_blocking_yield(VALUE fiber_value)
     rb_fiber_t *fiber = fiber_ptr(fiber_value);
     rb_thread_t * volatile th = fiber->cont.saved_ec.thread_ptr;
 
+    VM_ASSERT(fiber->blocking == 0);
+
     // fiber->blocking is `unsigned int : 1`, so we use it as a boolean:
     fiber->blocking = 1;
 
@@ -2585,7 +2873,8 @@ rb_fiber_blocking(VALUE class)
     // If we are already blocking, this is essentially a no-op:
     if (fiber->blocking) {
         return rb_yield(fiber_value);
-    } else {
+    }
+    else {
         return rb_ensure(fiber_blocking_yield, fiber_value, fiber_blocking_ensure, fiber_value);
     }
 }
@@ -2624,6 +2913,7 @@ void
 rb_fiber_close(rb_fiber_t *fiber)
 {
     fiber_status_set(fiber, FIBER_TERMINATED);
+    rb_ec_close(&fiber->cont.saved_ec);
 }
 
 static void
@@ -2945,12 +3235,13 @@ rb_fiber_s_yield(int argc, VALUE *argv, VALUE klass)
 }
 
 static VALUE
-fiber_raise(rb_fiber_t *fiber, int argc, const VALUE *argv)
+fiber_raise(rb_fiber_t *fiber, VALUE exception)
 {
-    VALUE exception = rb_make_exception(argc, argv);
-
-    if (fiber->resuming_fiber) {
-        rb_raise(rb_eFiberError, "attempt to raise a resuming fiber");
+    if (fiber == fiber_current()) {
+        rb_exc_raise(exception);
+    }
+    else if (fiber->resuming_fiber) {
+        return fiber_raise(fiber->resuming_fiber, exception);
     }
     else if (FIBER_SUSPENDED_P(fiber) && !fiber->yielding) {
         return fiber_transfer_kw(fiber, -1, &exception, RB_NO_KEYWORDS);
@@ -2961,31 +3252,46 @@ fiber_raise(rb_fiber_t *fiber, int argc, const VALUE *argv)
 }
 
 VALUE
-rb_fiber_raise(VALUE fiber, int argc, const VALUE *argv)
+rb_fiber_raise(VALUE fiber, int argc, VALUE *argv)
 {
-    return fiber_raise(fiber_ptr(fiber), argc, argv);
+    VALUE exception = rb_exception_setup(argc, argv);
+
+    return fiber_raise(fiber_ptr(fiber), exception);
 }
 
 /*
  *  call-seq:
- *     fiber.raise                                 -> obj
- *     fiber.raise(string)                         -> obj
- *     fiber.raise(exception [, string [, array]]) -> obj
+ *    raise(exception, message = exception.to_s, backtrace = nil, cause: $!)
+ *    raise(message = nil, cause: $!)
  *
  *  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
+ *  +Fiber.yield+ was called.
+ *
+ *     f = Fiber.new {
+ *       puts "Before the yield"
+ *       Fiber.yield 1 # -- exception will be raised here
+ *       puts "After the yield"
+ *     }
+ *
+ *     p f.resume
+ *     f.raise "Gotcha"
+ *
+ *  Output
+ *
+ *     Before the first yield
+ *     1
+ *     t.rb:8:in 'Fiber.yield': Gotcha (RuntimeError)
+ *       from t.rb:8:in 'block in <main>'
+ *
+ *  If the fiber has not been started or has
  *  already run to completion, raises +FiberError+. If the fiber is
  *  yielding, it is resumed. If it is transferring, it is transferred into.
  *  But if it is resuming, 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.
+ *  Raises +FiberError+ if called on a Fiber belonging to another +Thread+.
+ *
+ *  See Kernel#raise for more information on arguments.
+ *
  */
 static VALUE
 rb_fiber_m_raise(int argc, VALUE *argv, VALUE self)
@@ -2995,6 +3301,46 @@ rb_fiber_m_raise(int argc, VALUE *argv, VALUE self)
 
 /*
  *  call-seq:
+ *     fiber.kill -> nil
+ *
+ *  Terminates the fiber by raising an uncatchable exception.
+ *  It only terminates the given fiber and no other fiber, returning +nil+ to
+ *  another fiber if that fiber was calling #resume or #transfer.
+ *
+ *  <tt>Fiber#kill</tt> only interrupts another fiber when it is in Fiber.yield.
+ *  If called on the current fiber then it raises that exception at the <tt>Fiber#kill</tt> call site.
+ *
+ *  If the fiber has not been started, transition directly to the terminated state.
+ *
+ *  If the fiber is already terminated, does nothing.
+ *
+ *  Raises FiberError if called on a fiber belonging to another thread.
+ */
+static VALUE
+rb_fiber_m_kill(VALUE self)
+{
+    rb_fiber_t *fiber = fiber_ptr(self);
+
+    if (fiber->killed) return Qfalse;
+    fiber->killed = 1;
+
+    if (fiber->status == FIBER_CREATED) {
+        fiber->status = FIBER_TERMINATED;
+    }
+    else if (fiber->status != FIBER_TERMINATED) {
+        if (fiber_current() == fiber) {
+            fiber_check_killed(fiber);
+        }
+        else {
+            fiber_raise(fiber_ptr(self), Qnil);
+        }
+    }
+
+    return self;
+}
+
+/*
+ *  call-seq:
  *     Fiber.current -> fiber
  *
  *  Returns the current fiber. If you are not running in the context of
@@ -3040,6 +3386,8 @@ rb_fiber_atfork(rb_thread_t *th)
             th->root_fiber = th->ec->fiber_ptr;
         }
         th->root_fiber->prev = 0;
+        th->root_fiber->blocking = 1;
+        th->blocking = 1;
     }
 }
 #endif
@@ -3146,10 +3494,20 @@ Init_Cont(void)
 
     fiber_initialize_keywords[0] = rb_intern_const("blocking");
     fiber_initialize_keywords[1] = rb_intern_const("pool");
+    fiber_initialize_keywords[2] = rb_intern_const("storage");
 
     const 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);
+
+        if (shared_fiber_pool.free_stacks < 0) {
+            rb_warn("Setting RUBY_SHARED_FIBER_POOL_FREE_STACKS to a negative value is not allowed.");
+            shared_fiber_pool.free_stacks = 0;
+        }
+
+        if (shared_fiber_pool.free_stacks > 1) {
+            rb_warn("Setting RUBY_SHARED_FIBER_POOL_FREE_STACKS to a value greater than 1 is operating system specific, and may cause crashes.");
+        }
     }
 
     rb_cFiber = rb_define_class("Fiber", rb_cObject);
@@ -3158,10 +3516,16 @@ Init_Cont(void)
     rb_define_singleton_method(rb_cFiber, "yield", rb_fiber_s_yield, -1);
     rb_define_singleton_method(rb_cFiber, "current", rb_fiber_s_current, 0);
     rb_define_singleton_method(rb_cFiber, "blocking", rb_fiber_blocking, 0);
+    rb_define_singleton_method(rb_cFiber, "[]", rb_fiber_storage_aref, 1);
+    rb_define_singleton_method(rb_cFiber, "[]=", rb_fiber_storage_aset, 2);
+
     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, "storage", rb_fiber_storage_get, 0);
+    rb_define_method(rb_cFiber, "storage=", rb_fiber_storage_set, 1);
     rb_define_method(rb_cFiber, "resume", rb_fiber_m_resume, -1);
     rb_define_method(rb_cFiber, "raise", rb_fiber_m_raise, -1);
+    rb_define_method(rb_cFiber, "kill", rb_fiber_m_kill, 0);
     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);
@@ -3176,7 +3540,15 @@ Init_Cont(void)
 
     rb_define_singleton_method(rb_cFiber, "schedule", rb_fiber_s_schedule, -1);
 
+    rb_thread_t *current_thread = rb_current_thread();
+    RUBY_ASSERT(CLASS_OF(current_thread->ec->fiber_ptr->cont.self) == 0);
+    *(VALUE *)&((struct RBasic *)current_thread->ec->fiber_ptr->cont.self)->klass = rb_cFiber;
+
 #ifdef RB_EXPERIMENTAL_FIBER_POOL
+    /*
+     * Document-class: Fiber::Pool
+     * :nodoc: experimental
+     */
     rb_cFiberPool = rb_define_class_under(rb_cFiber, "Pool", rb_cObject);
     rb_define_alloc_func(rb_cFiberPool, fiber_pool_alloc);
     rb_define_method(rb_cFiberPool, "initialize", rb_fiber_pool_initialize, -1);
diff --git a/coroutine/amd64/Context.S b/coroutine/amd64/Context.S
index d50732adbc..4b94d31f30 100644
--- a/coroutine/amd64/Context.S
+++ b/coroutine/amd64/Context.S
@@ -5,37 +5,51 @@
 ##  Copyright, 2018, by Samuel Williams.
 ##
 
+/* Important - do _not_ include <cet.h> in this file; doing so will
+ * cause an incorrect .note.gnu.property section to be emitted. We have
+ * one at the bottom of this file */
+
 #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):
+.globl PREFIXED_SYMBOL(coroutine_transfer)
+PREFIXED_SYMBOL(coroutine_transfer):
+
+#if defined(__CET__) && (__CET__ & 0x01) != 0
+        /* IBT landing pad */
+        endbr64
+#endif
+
+	# Make space on the stack for 6 registers:
+	subq $48, %rsp
 
-	# Save caller state
-	pushq %rbp
-	pushq %rbx
-	pushq %r12
-	pushq %r13
-	pushq %r14
-	pushq %r15
+	# Save caller state:
+	movq %rbp, 40(%rsp)
+	movq %rbx, 32(%rsp)
+	movq %r12, 24(%rsp)
+	movq %r13, 16(%rsp)
+	movq %r14, 8(%rsp)
+	movq %r15, (%rsp)
 
-	# Save caller stack pointer
+	# Save caller stack pointer:
 	movq %rsp, (%rdi)
 
-	# Restore callee stack pointer
+	# 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 40(%rsp), %rbp
+	movq 32(%rsp), %rbx
+	movq 24(%rsp), %r12
+	movq 16(%rsp), %r13
+	movq 8(%rsp), %r14
+	movq (%rsp), %r15
+
+	# Adjust stack pointer back:
+	addq $48, %rsp
+
+	# Put the first argument into the return value:
 	movq %rdi, %rax
 
 	# We pop the return address and jump to it
@@ -44,3 +58,31 @@ PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(__ELF__)
 .section .note.GNU-stack,"",%progbits
 #endif
+
+#if defined(__ELF__)
+
+#if defined(__CET__) && (__CET__ & 0x01) != 0
+# define IBT_FLAG 0x01
+#else
+# define IBT_FLAG 0x00
+#endif
+
+/* We do _NOT_ support CET shadow-stack. Do _not_ add the property for
+ * this to the Context.o object. If you require CET shadow-stack support,
+ * for now, consider building with --with-coroutine=ucontext */
+#define SHSTK_FLAG 0x00
+
+.pushsection .note.gnu.property, "a"
+.p2align 3
+.long 0x4        /* Name size ("GNU\0") */
+.long 0x10       /* Descriptor size */
+.long 0x5        /* Type: NT_GNU_PROPERTY_TYPE_0 */
+.asciz "GNU"     /* Name */
+# Begin descriptor
+.long 0xc0000002 /* Property type: GNU_PROPERTY_X86_FEATURE_1_AND */
+.long 0x4        /* Property size */
+.long (IBT_FLAG | SHSTK_FLAG)
+.long 0x0        /* 8-byte alignment padding */
+/* End descriptor */
+.popsection
+#endif
diff --git a/coroutine/amd64/Context.h b/coroutine/amd64/Context.h
index 44daa4e01a..65aa638304 100644
--- a/coroutine/amd64/Context.h
+++ b/coroutine/amd64/Context.h
@@ -69,7 +69,7 @@ static inline void coroutine_initialize(
     context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
 
     *--context->stack_pointer = NULL;
-    *--context->stack_pointer = (void*)start;
+    *--context->stack_pointer = (void*)(uintptr_t)start;
 
     context->stack_pointer -= COROUTINE_REGISTERS;
     memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
diff --git a/coroutine/arm32/Context.S b/coroutine/arm32/Context.S
index 1850c4c408..945e4f82d5 100644
--- a/coroutine/arm32/Context.S
+++ b/coroutine/arm32/Context.S
@@ -6,16 +6,15 @@
 ##
 
 #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)
+.globl PREFIXED_SYMBOL(coroutine_transfer)
 .align 2
-.type PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer),%function
+.type PREFIXED_SYMBOL(coroutine_transfer),%function
 .syntax unified
 
-PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
+PREFIXED_SYMBOL(coroutine_transfer):
 	# Save caller state (8 registers + return address)
 	push {r4-r11,lr}
 
diff --git a/coroutine/arm32/Context.h b/coroutine/arm32/Context.h
index 09410eb25d..7529dd2efc 100644
--- a/coroutine/arm32/Context.h
+++ b/coroutine/arm32/Context.h
@@ -44,7 +44,7 @@ static inline void coroutine_initialize(
     char * top = (char*)stack + size;
     context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
 
-    *--context->stack_pointer = (void*)start;
+    *--context->stack_pointer = (void*)(uintptr_t)start;
 
     context->stack_pointer -= COROUTINE_REGISTERS;
     memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
diff --git a/coroutine/arm64/Context.S b/coroutine/arm64/Context.S
index 07d50d30df..ce219c0c4d 100644
--- a/coroutine/arm64/Context.S
+++ b/coroutine/arm64/Context.S
@@ -6,7 +6,6 @@
 ##
 
 #define TOKEN_PASTE(x,y) x##y
-#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
 
 #if defined(__APPLE__)
 #define x29 fp
@@ -18,26 +17,63 @@
 .align 2
 #endif
 
-.global PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
-PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
+#if defined(__ARM_FEATURE_PAC_DEFAULT) && (__ARM_FEATURE_PAC_DEFAULT & 0x02) != 0
+# error "-mbranch-protection flag specified b-key but Context.S does not support this"
+#endif
+
+#if defined(_WIN32)
+## Add more space for certain TEB values on each stack
+#define TEB_OFFSET 0x20
+#else
+#define TEB_OFFSET 0x00
+#endif
+
+## NOTE(PAC): Use we HINT mnemonics instead of PAC mnemonics to
+## keep compatibility with those assemblers that don't support PAC.
+##
+## See "Providing protection for complex software" for more details about PAC/BTI
+## https://developer.arm.com/architectures/learn-the-architecture/providing-protection-for-complex-software
+
+.global PREFIXED_SYMBOL(coroutine_transfer)
+PREFIXED_SYMBOL(coroutine_transfer):
 
+#if defined(__ARM_FEATURE_PAC_DEFAULT) && (__ARM_FEATURE_PAC_DEFAULT != 0)
+	# paciasp (it also acts as BTI landing pad, so no need to insert BTI also)
+	hint #25
+#elif defined(__ARM_FEATURE_BTI_DEFAULT) && (__ARM_FEATURE_BTI_DEFAULT != 0)
+	# For the case PAC is not enabled but BTI is.
+	# bti c
+	hint #34
+#endif
 	# Make space on the stack for caller registers
-	sub sp, sp, 0xb0
+	sub sp, sp, 0xa0 + TEB_OFFSET
 
 	# 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]
+	stp d8, d9, [sp, 0x00 + TEB_OFFSET]
+	stp d10, d11, [sp, 0x10 + TEB_OFFSET]
+	stp d12, d13, [sp, 0x20 + TEB_OFFSET]
+	stp d14, d15, [sp, 0x30 + TEB_OFFSET]
+	stp x19, x20, [sp, 0x40 + TEB_OFFSET]
+	stp x21, x22, [sp, 0x50 + TEB_OFFSET]
+	stp x23, x24, [sp, 0x60 + TEB_OFFSET]
+	stp x25, x26, [sp, 0x70 + TEB_OFFSET]
+	stp x27, x28, [sp, 0x80 + TEB_OFFSET]
+	stp x29, x30, [sp, 0x90 + TEB_OFFSET]
+
+#if defined(_WIN32)
+	# Save certain values from Thread Environment Block (TEB)
+	# x18 points to the TEB on Windows
+	# Read TeStackBase and TeStackLimit at ksarm64.h from TEB
+	ldp  x5,  x6,  [x18, #0x08]
+	# Save them
+	stp  x5,  x6,  [sp, #0x00]
+	# Read TeDeallocationStack at ksarm64.h from TEB
+	ldr  x5, [x18, #0x1478]
+	# Read TeFiberData at ksarm64.h from TEB
+	ldr  x6, [x18, #0x20]
+	# Save current fiber data and deallocation stack
+	stp  x5,  x6,  [sp, #0x10]
+#endif
 
 	# Save stack pointer to x0 (first argument)
 	mov x2, sp
@@ -47,27 +83,78 @@ PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
 	ldr x3, [x1, 0]
 	mov sp, x3
 
+#if defined(_WIN32)
+	# Restore stack base and limit
+	ldp  x5,  x6,  [sp, #0x00]
+	# Write TeStackBase and TeStackLimit at ksarm64.h to TEB
+	stp  x5,  x6,  [x18, #0x08]
+	# Restore fiber data and deallocation stack
+	ldp  x5,  x6,  [sp, #0x10]
+	# Write TeDeallocationStack at ksarm64.h to TEB
+	str  x5, [x18, #0x1478]
+	# Write TeFiberData at ksarm64.h to TEB
+	str  x6, [x18, #0x20]
+#endif
+
 	# 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]
+	ldp d8, d9, [sp, 0x00 + TEB_OFFSET]
+	ldp d10, d11, [sp, 0x10 + TEB_OFFSET]
+	ldp d12, d13, [sp, 0x20 + TEB_OFFSET]
+	ldp d14, d15, [sp, 0x30 + TEB_OFFSET]
+	ldp x19, x20, [sp, 0x40 + TEB_OFFSET]
+	ldp x21, x22, [sp, 0x50 + TEB_OFFSET]
+	ldp x23, x24, [sp, 0x60 + TEB_OFFSET]
+	ldp x25, x26, [sp, 0x70 + TEB_OFFSET]
+	ldp x27, x28, [sp, 0x80 + TEB_OFFSET]
+	ldp x29, x30, [sp, 0x90 + TEB_OFFSET]
 
 	# Pop stack frame
-	add sp, sp, 0xb0
+	add sp, sp, 0xa0 + TEB_OFFSET
 
-	# Jump to return address (in x4)
-	ret x4
+#if defined(__ARM_FEATURE_PAC_DEFAULT) && (__ARM_FEATURE_PAC_DEFAULT != 0)
+	# autiasp: Authenticate x30 (LR) with SP and key A
+	hint #29
+#endif
+
+	# Jump to return address (in x30)
+	ret
 
 #if defined(__linux__) && defined(__ELF__)
 .section .note.GNU-stack,"",%progbits
 #endif
+
+#if (defined(__ARM_FEATURE_BTI_DEFAULT) && __ARM_FEATURE_BTI_DEFAULT != 0) || (defined(__ARM_FEATURE_PAC_DEFAULT) && __ARM_FEATURE_PAC_DEFAULT != 0)
+#if defined(__ELF__)
+/*  See "ELF for the Arm 64-bit Architecture (AArch64)"
+    https://github.com/ARM-software/abi-aa/blob/2023Q3/aaelf64/aaelf64.rst#program-property */
+#  define GNU_PROPERTY_AARCH64_FEATURE_1_BTI (1<<0)
+#  define GNU_PROPERTY_AARCH64_FEATURE_1_PAC (1<<1)
+
+#  if defined(__ARM_FEATURE_BTI_DEFAULT) && __ARM_FEATURE_BTI_DEFAULT != 0
+#    define BTI_FLAG GNU_PROPERTY_AARCH64_FEATURE_1_BTI
+#  else
+#    define BTI_FLAG 0
+#  endif
+#  if defined(__ARM_FEATURE_PAC_DEFAULT) && __ARM_FEATURE_PAC_DEFAULT != 0
+#    define PAC_FLAG GNU_PROPERTY_AARCH64_FEATURE_1_PAC
+#  else
+#    define PAC_FLAG 0
+#  endif
+
+  # The note section format is described by Note Section in Chapter 5
+  # of "System V Application Binary Interface, Edition 4.1".
+  .pushsection .note.gnu.property, "a"
+  .p2align 3
+  .long 0x4        /* Name size ("GNU\0") */
+  .long 0x10       /* Descriptor size */
+  .long 0x5        /* Type: NT_GNU_PROPERTY_TYPE_0 */
+  .asciz "GNU"     /* Name */
+  # Begin descriptor
+  .long 0xc0000000 /* Property type: GNU_PROPERTY_AARCH64_FEATURE_1_AND */
+  .long 0x4        /* Property size */
+  .long (BTI_FLAG|PAC_FLAG)
+  .long 0x0        /* 8-byte alignment padding */
+  # End descriptor
+  .popsection
+#endif
+#endif
diff --git a/coroutine/arm64/Context.asm b/coroutine/arm64/Context.asm
new file mode 100644
index 0000000000..866fa628e7
--- /dev/null
+++ b/coroutine/arm64/Context.asm
@@ -0,0 +1,81 @@
+	TTL	coroutine/arm64/Context.asm
+
+	AREA	|.drectve|, DRECTVE
+
+	EXPORT	|coroutine_transfer|
+
+	AREA	|.text$mn|, CODE, ARM64
+
+;; Add more space for certain TEB values on each stack
+TEB_OFFSET EQU 0x20
+
+;; Incomplete implementation
+coroutine_transfer PROC
+	; Make space on the stack for caller registers
+	sub sp, sp, 0xa0 + TEB_OFFSET
+
+	; Save caller registers
+	stp d8, d9, [sp, 0x00 + TEB_OFFSET]
+	stp d10, d11, [sp, 0x10 + TEB_OFFSET]
+	stp d12, d13, [sp, 0x20 + TEB_OFFSET]
+	stp d14, d15, [sp, 0x30 + TEB_OFFSET]
+	stp x19, x20, [sp, 0x40 + TEB_OFFSET]
+	stp x21, x22, [sp, 0x50 + TEB_OFFSET]
+	stp x23, x24, [sp, 0x60 + TEB_OFFSET]
+	stp x25, x26, [sp, 0x70 + TEB_OFFSET]
+	stp x27, x28, [sp, 0x80 + TEB_OFFSET]
+	stp x29, x30, [sp, 0x90 + TEB_OFFSET]
+
+	;; Save certain values from Thread Environment Block (TEB) x18
+	;; points to the TEB on Windows
+	;; Read TeStackBase and TeStackLimit at ksarm64.h from TEB
+	ldp  x5,  x6,  [x18, #0x08]
+	;; Save them
+	stp  x5,  x6,  [sp, #0x00]
+	;; Read TeDeallocationStack at ksarm64.h from TEB
+	ldr  x5, [x18, #0x1478]
+	;; Read TeFiberData at ksarm64.h from TEB
+	ldr  x6, [x18, #0x20]
+	;; Save current fiber data and deallocation stack
+	stp  x5,  x6,  [sp, #0x10]
+
+	; 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 stack base and limit
+	ldp  x5,  x6,  [sp, #0x00]
+	;; Write TeStackBase and TeStackLimit at ksarm64.h to TEB
+	stp  x5,  x6,  [x18, #0x08]
+	;; Restore fiber data and deallocation stack
+	ldp  x5,  x6,  [sp, #0x10]
+	;; Write TeDeallocationStack at ksarm64.h to TEB
+	str  x5, [x18, #0x1478]
+	;; Write TeFiberData at ksarm64.h to TEB
+	str  x6, [x18, #0x20]
+
+	; Restore caller registers
+	ldp d8, d9, [sp, 0x00 + TEB_OFFSET]
+	ldp d10, d11, [sp, 0x10 + TEB_OFFSET]
+	ldp d12, d13, [sp, 0x20 + TEB_OFFSET]
+	ldp d14, d15, [sp, 0x30 + TEB_OFFSET]
+	ldp x19, x20, [sp, 0x40 + TEB_OFFSET]
+	ldp x21, x22, [sp, 0x50 + TEB_OFFSET]
+	ldp x23, x24, [sp, 0x60 + TEB_OFFSET]
+	ldp x25, x26, [sp, 0x70 + TEB_OFFSET]
+	ldp x27, x28, [sp, 0x80 + TEB_OFFSET]
+	ldp x29, x30, [sp, 0x90 + TEB_OFFSET]
+
+	; Pop stack frame
+	add sp, sp, 0xa0 + TEB_OFFSET
+
+	; Jump to return address (in x30)
+	ret
+
+	endp
+
+	end
diff --git a/coroutine/arm64/Context.h b/coroutine/arm64/Context.h
index 1472621f48..468e4155b2 100644
--- a/coroutine/arm64/Context.h
+++ b/coroutine/arm64/Context.h
@@ -15,9 +15,21 @@
 #include <stdint.h>
 #include <string.h>
 
+#if defined __GNUC__
 #define COROUTINE __attribute__((noreturn)) void
+#define COROUTINE_DECL COROUTINE
+#elif defined _MSC_VER
+#define COROUTINE __declspec(noreturn) void
+#define COROUTINE_DECL void
+#endif
+
+#if defined(_WIN32)
+#define TEB_OFFSET 0x20
+#else
+#define TEB_OFFSET 0x00
+#endif
 
-enum {COROUTINE_REGISTERS = 0xb0 / 8};
+enum {COROUTINE_REGISTERS = (0xa0 + TEB_OFFSET) / 8};
 
 #if defined(__SANITIZE_ADDRESS__)
     #define COROUTINE_SANITIZE_ADDRESS
@@ -44,12 +56,26 @@ struct coroutine_context
 #endif
 };
 
-typedef COROUTINE(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
+typedef COROUTINE_DECL(* 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 *ptrauth_sign_instruction_addr(void *addr, void *modifier) {
+#if defined(__ARM_FEATURE_PAC_DEFAULT) && __ARM_FEATURE_PAC_DEFAULT != 0
+    // Sign the given instruction address with the given modifier and key A
+    register void *r17 __asm("r17") = addr;
+    register void *r16 __asm("r16") = modifier;
+    // Use HINT mnemonic instead of PACIA1716 for compatibility with older assemblers.
+    __asm ("hint #8;" : "+r"(r17) : "r"(r16));
+    addr = r17;
+#else
+    // No-op if PAC is not enabled
+#endif
+    return addr;
+}
+
 static inline void coroutine_initialize(
     struct coroutine_context *context,
     coroutine_start start,
@@ -66,12 +92,21 @@ static inline void coroutine_initialize(
 
     // Stack grows down. Force 16-byte alignment.
     char * top = (char*)stack + size;
-    context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
+    top = (char *)((uintptr_t)top & ~0xF);
+    context->stack_pointer = (void**)top;
 
     context->stack_pointer -= COROUTINE_REGISTERS;
     memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
 
-    context->stack_pointer[0xa0 / 8] = (void*)start;
+    void *addr = (void*)(uintptr_t)start;
+    context->stack_pointer[(0x98 + TEB_OFFSET) / 8] = ptrauth_sign_instruction_addr(addr, (void*)top);
+#if defined(_WIN32)
+    // save top address of stack as base in TEB
+    context->stack_pointer[0x00 / 8] = (char*)stack + size;
+    // save botton address of stack as limit and deallocation stack in TEB
+    context->stack_pointer[0x08 / 8] = stack;
+    context->stack_pointer[0x10 / 8] = stack;
+#endif
 }
 
 struct coroutine_context * coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target);
diff --git a/coroutine/asyncify/Context.h b/coroutine/asyncify/Context.h
index 7dba829a1d..71791a4004 100644
--- a/coroutine/asyncify/Context.h
+++ b/coroutine/asyncify/Context.h
@@ -13,6 +13,7 @@
 
 #include <stddef.h>
 #include <stdio.h>
+#include <stdint.h>
 #include "wasm/asyncify.h"
 #include "wasm/machine.h"
 #include "wasm/fiber.h"
@@ -47,10 +48,13 @@ static inline void coroutine_initialize_main(struct coroutine_context * context)
 
 static inline void coroutine_initialize(struct coroutine_context *context, coroutine_start start, void *stack, size_t size)
 {
-    if (ASYNCIFY_CORO_DEBUG) fprintf(stderr, "[%s] entry (context = %p, stack = %p ... %p)\n", __func__, context, stack, (char *)stack + size);
+    // Linear stack pointer must be always aligned down to 16 bytes.
+    // https://github.com/WebAssembly/tool-conventions/blob/c74267a5897c1bdc9aa60adeaf41816387d3cd12/BasicCABI.md#the-linear-stack
+    uintptr_t sp = ((uintptr_t)stack + size) & ~0xF;
+    if (ASYNCIFY_CORO_DEBUG) fprintf(stderr, "[%s] entry (context = %p, stack = %p ... %p)\n", __func__, context, stack, (char *)sp);
     rb_wasm_init_context(&context->fc, coroutine_trampoline, start, context);
     // record the initial stack pointer position to restore it after resumption
-    context->current_sp = (char *)stack + size;
+    context->current_sp = (char *)sp;
     context->stack_base = stack;
     context->size = size;
 }
diff --git a/coroutine/loongarch64/Context.S b/coroutine/loongarch64/Context.S
new file mode 100644
index 0000000000..6e10cd032b
--- /dev/null
+++ b/coroutine/loongarch64/Context.S
@@ -0,0 +1,72 @@
+#define TOKEN_PASTE(x,y) x##y
+
+.text
+.align 2
+
+.global PREFIXED_SYMBOL(coroutine_transfer)
+PREFIXED_SYMBOL(coroutine_transfer):
+
+	# Make space on the stack for caller registers
+	addi.d $sp, $sp, -0xa0
+
+	# Save caller registers
+	st.d $s0, $sp, 0x00
+	st.d $s1, $sp, 0x08
+	st.d $s2, $sp, 0x10
+	st.d $s3, $sp, 0x18
+	st.d $s4, $sp, 0x20
+	st.d $s5, $sp, 0x28
+	st.d $s6, $sp, 0x30
+	st.d $s7, $sp, 0x38
+	st.d $s8, $sp, 0x40
+	st.d $fp, $sp, 0x48
+	fst.d $fs0, $sp, 0x50
+	fst.d $fs1, $sp, 0x58
+	fst.d $fs2, $sp, 0x60
+	fst.d $fs3, $sp, 0x68
+	fst.d $fs4, $sp, 0x70
+	fst.d $fs5, $sp, 0x78
+	fst.d $fs6, $sp, 0x80
+	fst.d $fs7, $sp, 0x88
+
+	# Save return address
+	st.d $ra, $sp, 0x90
+
+	# Save stack pointer to a0 (first argument)
+	st.d $sp, $a0, 0x00
+
+	# Load stack pointer from a1 (second argument)
+	ld.d $sp, $a1, 0x00
+
+	# Restore caller registers
+	ld.d $s0, $sp, 0x00
+	ld.d $s1, $sp, 0x08
+	ld.d $s2, $sp, 0x10
+	ld.d $s3, $sp, 0x18
+	ld.d $s4, $sp, 0x20
+	ld.d $s5, $sp, 0x28
+	ld.d $s6, $sp, 0x30
+	ld.d $s7, $sp, 0x38
+	ld.d $s8, $sp, 0x40
+	ld.d $fp, $sp, 0x48
+	fld.d $fs0, $sp, 0x50
+	fld.d $fs1, $sp, 0x58
+	fld.d $fs2, $sp, 0x60
+	fld.d $fs3, $sp, 0x68
+	fld.d $fs4, $sp, 0x70
+	fld.d $fs5, $sp, 0x78
+	fld.d $fs6, $sp, 0x80
+	fld.d $fs7, $sp, 0x88
+
+	# Load return address
+	ld.d $ra, $sp, 0x90
+
+	# Pop stack frame
+	addi.d $sp, $sp, 0xa0	
+
+	# Jump to return address
+	jr $ra
+
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits
+#endif
diff --git a/coroutine/loongarch64/Context.h b/coroutine/loongarch64/Context.h
new file mode 100644
index 0000000000..82b85b36e9
--- /dev/null
+++ b/coroutine/loongarch64/Context.h
@@ -0,0 +1,46 @@
+#pragma once
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#define COROUTINE __attribute__((noreturn)) void
+
+enum {COROUTINE_REGISTERS = 0xa0 / 8};
+
+struct coroutine_context
+{
+    void **stack_pointer;
+    void *argument;
+};
+
+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[0x90 / 8] = (void*)(uintptr_t)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/ppc/Context.S b/coroutine/ppc/Context.S
index cdda93e179..f44b2419b4 100644
--- a/coroutine/ppc/Context.S
+++ b/coroutine/ppc/Context.S
@@ -3,21 +3,20 @@
 ; Some relevant examples: https://github.com/gcc-mirror/gcc/blob/master/libphobos/libdruntime/config/powerpc/switchcontext.S
 ; https://github.com/gcc-mirror/gcc/blob/master/libgcc/config/rs6000/darwin-gpsave.S
 ; https://www.ibm.com/docs/en/aix/7.2?topic=epilogs-saving-gprs-only
-; ppc32 version may be re-written compactly with stmw/lwm, but the code wonʼt be faster, see: https://github.com/ruby/ruby/pull/5927#issuecomment-1139730541
+; ppc32 version may be re-written compactly with stmw/lwm, but the code won't be faster, see: https://github.com/ruby/ruby/pull/5927#issuecomment-1139730541
 
 ; Notice that this code is only for Darwin (macOS). Darwin ABI differs from AIX and ELF.
 ; To add support for AIX, *BSD or *Linux, please make separate implementations.
 
 #define TOKEN_PASTE(x,y) x##y
-#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
 
 .machine ppc7400 ; = G4, Rosetta
 .text
 
-.globl PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
+.globl PREFIXED_SYMBOL(coroutine_transfer)
 .align 2
 
-PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
+PREFIXED_SYMBOL(coroutine_transfer):
 	; Make space on the stack for caller registers
 	; (Should we rather use red zone? See libphobos example.)
 	subi r1,r1,80
diff --git a/coroutine/ppc/Context.h b/coroutine/ppc/Context.h
index 1fce112579..8035d08556 100644
--- a/coroutine/ppc/Context.h
+++ b/coroutine/ppc/Context.h
@@ -13,7 +13,7 @@
 
 enum {
   COROUTINE_REGISTERS =
-  20  /* 19 general purpose registers (r13–r31) and 1 return address */
+  20  /* 19 general purpose registers (r13-r31) and 1 return address */
   + 4  /* space for fiber_entry() to store the link register */
 };
 
diff --git a/coroutine/ppc64/Context.S b/coroutine/ppc64/Context.S
index f8561e0e7d..20a47c61c6 100644
--- a/coroutine/ppc64/Context.S
+++ b/coroutine/ppc64/Context.S
@@ -8,15 +8,14 @@
 ; To add support for AIX, *BSD or *Linux, please make separate implementations.
 
 #define TOKEN_PASTE(x,y) x##y
-#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
 
 .machine ppc64 ; = G5
 .text
 
-.globl PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
+.globl PREFIXED_SYMBOL(coroutine_transfer)
 .align 2
 
-PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
+PREFIXED_SYMBOL(coroutine_transfer):
 	; Make space on the stack for caller registers
 	; (Should we rather use red zone? See libphobos example.)
 	subi r1,r1,160
diff --git a/coroutine/ppc64/Context.h b/coroutine/ppc64/Context.h
index 3e6f77f55a..085b475ed5 100644
--- a/coroutine/ppc64/Context.h
+++ b/coroutine/ppc64/Context.h
@@ -12,7 +12,7 @@
 
 enum {
   COROUTINE_REGISTERS =
-  20  /* 19 general purpose registers (r13–r31) and 1 return address */
+  20  /* 19 general purpose registers (r13-r31) and 1 return address */
   + 4  /* space for fiber_entry() to store the link register */
 };
 
diff --git a/coroutine/ppc64le/Context.S b/coroutine/ppc64le/Context.S
index 61be9efcf0..f7bcae2c3a 100644
--- a/coroutine/ppc64le/Context.S
+++ b/coroutine/ppc64le/Context.S
@@ -1,14 +1,13 @@
 #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):
+.globl PREFIXED_SYMBOL(coroutine_transfer)
+.type   PREFIXED_SYMBOL(coroutine_transfer), @function
+PREFIXED_SYMBOL(coroutine_transfer):
 	# Make space on the stack for caller registers
-	addi 1,1,-152
+	addi 1,1,-160
 
 	# Save caller registers
 	std 14,0(1)
@@ -34,6 +33,10 @@ PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
 	mflr 0
 	std 0,144(1)
 
+        # Save caller special register
+        mfcr 0
+        std 0, 152(1)
+
 	# Save stack pointer to first argument
 	std 1,0(3)
 
@@ -64,8 +67,14 @@ PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
 	ld 0,144(1)
 	mtlr 0
 
+        # Load special registers
+        ld 0,152(1)
+        # Restore cr register cr2, cr3 and cr4 (field index 3,4,5)
+        # (field index is 1-based, field 1 = cr0) using a mask (32|16|8 = 56)
+        mtcrf 56,0
+
 	# Pop stack frame
-	addi 1,1,152
+	addi 1,1,160
 
 	# Jump to return address
 	blr
diff --git a/coroutine/ppc64le/Context.h b/coroutine/ppc64le/Context.h
index fbfaa2ee63..63ea9f19ff 100644
--- a/coroutine/ppc64le/Context.h
+++ b/coroutine/ppc64le/Context.h
@@ -12,7 +12,7 @@
 
 enum {
   COROUTINE_REGISTERS =
-  19  /* 18 general purpose registers (r14-r31) and 1 return address */
+  20  /* 18 general purpose registers (r14-r31), 1 special register (cr) and 1 return address */
   + 4  /* space for fiber_entry() to store the link register */
 };
 
diff --git a/coroutine/riscv64/Context.S b/coroutine/riscv64/Context.S
index cc4e872f84..8e7fc74ffc 100644
--- a/coroutine/riscv64/Context.S
+++ b/coroutine/riscv64/Context.S
@@ -1,11 +1,10 @@
 #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):
+.global PREFIXED_SYMBOL(coroutine_transfer)
+PREFIXED_SYMBOL(coroutine_transfer):
 
 	# Make space on the stack for caller registers
 	addi sp, sp, -0xd0
diff --git a/coroutine/riscv64/Context.h b/coroutine/riscv64/Context.h
index 9ce1140e0b..3660fb5577 100644
--- a/coroutine/riscv64/Context.h
+++ b/coroutine/riscv64/Context.h
@@ -36,7 +36,7 @@ static inline void coroutine_initialize(
     context->stack_pointer -= COROUTINE_REGISTERS;
     memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
 
-    context->stack_pointer[0xc0 / 8] = (void*)start;
+    context->stack_pointer[0xc0 / 8] = (void*)(uintptr_t)start;
 }
 
 struct coroutine_context * coroutine_transfer(struct coroutine_context * current, struct coroutine_context * target);
diff --git a/coroutine/win32/Context.h b/coroutine/win32/Context.h
index 902fd1246f..c1c8fbcd13 100644
--- a/coroutine/win32/Context.h
+++ b/coroutine/win32/Context.h
@@ -16,6 +16,7 @@
 #include <string.h>
 
 #define COROUTINE __declspec(noreturn) void __fastcall
+#define COROUTINE_DECL void __fastcall
 #define COROUTINE_LIMITED_ADDRESS_SPACE
 
 /* This doesn't include thread information block */
@@ -45,7 +46,7 @@ static inline void coroutine_initialize(
     char * top = (char*)stack + size;
     context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
 
-    *--context->stack_pointer = (void*)start;
+    *--context->stack_pointer = (void*)(uintptr_t)start;
 
     /* Windows Thread Information Block */
     *--context->stack_pointer = (void*)0xFFFFFFFF; /* fs:[0] */
diff --git a/coroutine/win64/Context.h b/coroutine/win64/Context.h
index aaa4caeaf9..23b21b5c1c 100644
--- a/coroutine/win64/Context.h
+++ b/coroutine/win64/Context.h
@@ -16,6 +16,7 @@
 #include <string.h>
 
 #define COROUTINE __declspec(noreturn) void
+#define COROUTINE_DECL void
 
 enum {
     COROUTINE_REGISTERS = 8,
@@ -30,7 +31,7 @@ struct coroutine_context
 
 typedef void(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self);
 
-void coroutine_trampoline();
+void coroutine_trampoline(void);
 
 static inline void coroutine_initialize_main(struct coroutine_context * context) {
     context->stack_pointer = NULL;
@@ -53,7 +54,7 @@ static inline void coroutine_initialize(
 
     /* Return address */
     *--context->stack_pointer = 0;
-    *--context->stack_pointer = (void*)start;
+    *--context->stack_pointer = (void*)(uintptr_t)start;
     *--context->stack_pointer = (void*)coroutine_trampoline;
 
     /* Windows Thread Information Block */
diff --git a/coroutine/x86/Context.S b/coroutine/x86/Context.S
index f06a417084..b04e71aa1c 100644
--- a/coroutine/x86/Context.S
+++ b/coroutine/x86/Context.S
@@ -6,12 +6,11 @@
 ##
 
 #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):
+.globl PREFIXED_SYMBOL(coroutine_transfer)
+PREFIXED_SYMBOL(coroutine_transfer):
 
 	# Save caller registers
 	pushl %ebp
diff --git a/coroutine/x86/Context.h b/coroutine/x86/Context.h
index d98eaf6486..f33b338eab 100644
--- a/coroutine/x86/Context.h
+++ b/coroutine/x86/Context.h
@@ -45,7 +45,7 @@ static inline void coroutine_initialize(
     context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
 
     *--context->stack_pointer = NULL;
-    *--context->stack_pointer = (void*)start;
+    *--context->stack_pointer = (void*)(uintptr_t)start;
 
     context->stack_pointer -= COROUTINE_REGISTERS;
     memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
diff --git a/cygwin/GNUmakefile.in b/cygwin/GNUmakefile.in
index 43e92a27f0..109baa747d 100644
--- a/cygwin/GNUmakefile.in
+++ b/cygwin/GNUmakefile.in
@@ -2,6 +2,9 @@ gnumake = yes
 
 include Makefile
 
+MUNICODE_FLAG := $(if $(filter mingw%,$(target_os)),-municode)
+override EXE_LDFLAGS += $(MUNICODE_FLAG)
+
 DLLWRAP = @DLLWRAP@ --target=$(target_os) --driver-name="$(CC)"
 windres-cpp := $(CPP) -xc
 windres-cpp := --preprocessor=$(firstword $(windres-cpp)) \
@@ -41,6 +44,7 @@ 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
+override LIBRUBY_FOR_LEAKED_GLOBALS := # DLL shows symbols from import library
 
 ruby: $(PROGRAM)
 rubyw: $(WPROGRAM)
@@ -63,7 +67,7 @@ $(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) \
+	$(Q) $(PURIFY) $(CC) $(MUNICODE_FLAG) -mwindows -e $(SYMBOL_PREFIX)mainCRTStartup $(LDFLAGS) $(XLDFLAGS) \
 	  $(MAINOBJ) $(EXTOBJS) $(LIBRUBYARG) $(LIBS) -o $@
 $(STUBPROGRAM): $(RUBY_INSTALL_NAME).res.$(OBJEXT)
 
@@ -90,6 +94,8 @@ 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)
 test/% spec/%/ spec/%_spec.rb: export MSYS2_ARG_CONV_EXCL=$(MSYS2_ARG_CONV_EXCL_PARAM)
 
+distclean-local::
+	$(RMDIR) win32
 endif
 
 $(LIBRUBY_SO): $(RUBYDEF)
diff --git a/darray.h b/darray.h
index c9a53f1e01..10fd5e4ccc 100644
--- a/darray.h
+++ b/darray.h
@@ -4,6 +4,7 @@
 #include <stdint.h>
 #include <stddef.h>
 #include <stdlib.h>
+#include "ruby/ruby.h"
 
 // Type for a dynamic array. Use to declare a dynamic array.
 // It is a pointer so it fits in st_table nicely. Designed
@@ -37,66 +38,107 @@
 //
 #define rb_darray_ref(ary, idx) (&((ary)->data[(idx)]))
 
-// Copy a new element into the array. ptr_to_ary is evaluated multiple times.
-//
-// void rb_darray_append(rb_darray(T) *ptr_to_ary, T element);
-//
-#define rb_darray_append(ptr_to_ary, element) do {  \
-    rb_darray_ensure_space((ptr_to_ary), sizeof(**(ptr_to_ary)), \
-                           sizeof((*(ptr_to_ary))->data[0])); \
+/* Copy a new element into the array. ptr_to_ary is evaluated multiple times.
+ *
+ * void rb_darray_append(rb_darray(T) *ptr_to_ary, T element);
+ */
+#define rb_darray_append(ptr_to_ary, element) \
+    rb_darray_append_impl(ptr_to_ary, element, rb_darray_realloc_mul_add)
+
+#define rb_darray_append_without_gc(ptr_to_ary, element) \
+    rb_darray_append_impl(ptr_to_ary, element, rb_darray_realloc_mul_add_without_gc)
+
+#define rb_darray_append_impl(ptr_to_ary, element, realloc_func) do {  \
+    rb_darray_ensure_space((ptr_to_ary), \
+                           sizeof(**(ptr_to_ary)), \
+                           sizeof((*(ptr_to_ary))->data[0]), \
+                           realloc_func); \
     rb_darray_set(*(ptr_to_ary), \
                   (*(ptr_to_ary))->meta.size, \
                   (element)); \
     (*(ptr_to_ary))->meta.size++; \
 } while (0)
 
+#define rb_darray_insert_without_gc(ptr_to_ary, idx, element) do { \
+    rb_darray_ensure_space((ptr_to_ary), \
+                           sizeof(**(ptr_to_ary)), \
+                           sizeof((*(ptr_to_ary))->data[0]), \
+                           rb_darray_realloc_mul_add_without_gc); \
+    MEMMOVE( \
+        rb_darray_ref(*(ptr_to_ary), idx + 1), \
+        rb_darray_ref(*(ptr_to_ary), idx), \
+        (*(ptr_to_ary))->data[0], \
+        rb_darray_size(*(ptr_to_ary)) - idx); \
+    rb_darray_set(*(ptr_to_ary), idx, element); \
+    (*(ptr_to_ary))->meta.size++; \
+} while (0)
 
-// Last element of the array
-//
-#define rb_darray_back(ary) ((ary)->data[(ary)->meta.size - 1])
-
-// Remove the last element of the array.
-//
-#define rb_darray_pop_back(ary) ((ary)->meta.size--)
-
-// Remove element at idx and replace it by the last element
-#define rb_darray_remove_unordered(ary, idx) do {   \
-    rb_darray_set(ary, idx, rb_darray_back(ary));   \
-    rb_darray_pop_back(ary);                        \
-} while (0);
+/* Removes the element at idx and replaces it with the last element.
+ * ptr_to_ary and idx is evaluated multiple times.
+ * Warning: not bounds checked.
+ *
+ * void rb_darray_swap_remove(rb_darray(T) *ptr_to_ary, size_t idx);
+ */
+#define rb_darray_swap_remove(ptr_to_ary, idx) do { \
+    size_t _darray_size = rb_darray_size(*(ptr_to_ary)); \
+    if ((idx) != _darray_size - 1) { \
+        (*(ptr_to_ary))->data[idx] = (*(ptr_to_ary))->data[_darray_size - 1]; \
+    } \
+    (*(ptr_to_ary))->meta.size--; \
+} while (0)
 
 // Iterate over items of the array in a for loop
 //
 #define rb_darray_foreach(ary, idx_name, elem_ptr_var) \
     for (size_t idx_name = 0; idx_name < rb_darray_size(ary) && ((elem_ptr_var) = rb_darray_ref(ary, idx_name)); ++idx_name)
 
-// Iterate over valid indicies in the array in a for loop
+// Iterate over valid indices in the array in a for loop
 //
 #define rb_darray_for(ary, idx_name) \
     for (size_t idx_name = 0; idx_name < rb_darray_size(ary); ++idx_name)
 
-// Make a dynamic array of a certain size. All bytes backing the elements are set to zero.
-//
-// Note that NULL is a valid empty dynamic array.
-//
-// void rb_darray_make(rb_darray(T) *ptr_to_ary, size_t size);
-//
+/* Make a dynamic array of a certain size. All bytes backing the elements are set to zero.
+ * Return 1 on success and 0 on failure.
+ *
+ * Note that NULL is a valid empty dynamic array.
+ *
+ * void rb_darray_make(rb_darray(T) *ptr_to_ary, size_t size);
+ */
 #define rb_darray_make(ptr_to_ary, size) \
     rb_darray_make_impl((ptr_to_ary), size, sizeof(**(ptr_to_ary)), \
-                         sizeof((*(ptr_to_ary))->data[0]))
+                         sizeof((*(ptr_to_ary))->data[0]), rb_darray_calloc_mul_add)
 
-#define rb_darray_data_ptr(ary) ((ary)->data)
+#define rb_darray_make_without_gc(ptr_to_ary, size) \
+    rb_darray_make_impl((ptr_to_ary), size, sizeof(**(ptr_to_ary)), \
+                        sizeof((*(ptr_to_ary))->data[0]), rb_darray_calloc_mul_add_without_gc)
 
-// Set the size of the array to zero without freeing the backing memory.
-// Allows reusing the same array.
-//
-#define rb_darray_clear(ary) (ary->meta.size = 0)
+/* Resize the darray to a new capacity. The new capacity must be greater than
+ * or equal to the size of the darray.
+ *
+ * void rb_darray_resize_capa(rb_darray(T) *ptr_to_ary, size_t capa);
+ */
+#define rb_darray_resize_capa_without_gc(ptr_to_ary, capa) \
+    rb_darray_resize_capa_impl((ptr_to_ary), capa, sizeof(**(ptr_to_ary)), \
+                               sizeof((*(ptr_to_ary))->data[0]), rb_darray_realloc_mul_add_without_gc)
+
+#define rb_darray_data_ptr(ary) ((ary)->data)
 
 typedef struct rb_darray_meta {
     size_t size;
     size_t capa;
 } rb_darray_meta_t;
 
+/* Set the size of the array to zero without freeing the backing memory.
+ * Allows reusing the same array. */
+static inline void
+rb_darray_clear(void *ary)
+{
+    rb_darray_meta_t *meta = ary;
+    if (meta) {
+        meta->size = 0;
+    }
+}
+
 // Get the size of the dynamic array.
 //
 static inline size_t
@@ -106,6 +148,17 @@ rb_darray_size(const void *ary)
     return meta ? meta->size : 0;
 }
 
+/* Estimate of the amount of memory used by this darray.
+ * Useful for TypedData objects. */
+#define rb_darray_memsize(ary) (sizeof(*(ary)) + (rb_darray_size(ary) * sizeof((ary)->data[0])))
+
+static inline void
+rb_darray_pop(void *ary, size_t count)
+{
+    rb_darray_meta_t *meta = ary;
+    meta->size -= count;
+}
+
 // Get the capacity of the dynamic array.
 //
 static inline size_t
@@ -115,20 +168,99 @@ rb_darray_capa(const void *ary)
     return meta ? meta->capa : 0;
 }
 
-// Free the dynamic array.
-//
+/* Free the dynamic array. */
 static inline void
 rb_darray_free(void *ary)
 {
-    rb_darray_meta_t *meta = ary;
-    ruby_sized_xfree(ary, meta->capa);
+    xfree(ary);
+}
+
+static inline void
+rb_darray_free_without_gc(void *ary)
+{
+    free(ary);
+}
+
+/* Internal function. Like rb_xcalloc_mul_add. */
+static inline void *
+rb_darray_calloc_mul_add(size_t x, size_t y, size_t z)
+{
+    size_t size = rbimpl_size_add_or_raise(rbimpl_size_mul_or_raise(x, y), z);
+
+    void *ptr = xcalloc(1, size);
+    RUBY_ASSERT(ptr != NULL);
+
+    return ptr;
+}
+
+/* Internal function. Like rb_xcalloc_mul_add but does not trigger GC. */
+static inline void *
+rb_darray_calloc_mul_add_without_gc(size_t x, size_t y, size_t z)
+{
+    size_t size = rbimpl_size_add_or_raise(rbimpl_size_mul_or_raise(x, y), z);
+
+    void *ptr = calloc(1, size);
+    if (ptr == NULL) rb_bug("rb_darray_calloc_mul_add_without_gc: failed");
+
+    return ptr;
+}
+
+/* Internal function. Like rb_xrealloc_mul_add. */
+static inline void *
+rb_darray_realloc_mul_add(void *orig_ptr, size_t x, size_t y, size_t z)
+{
+    size_t size = rbimpl_size_add_or_raise(rbimpl_size_mul_or_raise(x, y), z);
+
+    void *ptr = xrealloc(orig_ptr, size);
+    RUBY_ASSERT(ptr != NULL);
+
+    return ptr;
+}
+
+/* Internal function. Like rb_xrealloc_mul_add but does not trigger GC. */
+static inline void *
+rb_darray_realloc_mul_add_without_gc(void *orig_ptr, size_t x, size_t y, size_t z)
+{
+    size_t size = rbimpl_size_add_or_raise(rbimpl_size_mul_or_raise(x, y), z);
+
+    void *ptr = realloc(orig_ptr, size);
+    if (ptr == NULL) rb_bug("rb_darray_realloc_mul_add_without_gc: failed");
+
+    return ptr;
+}
+
+/* Internal function. Resizes the capacity of a darray. The new capacity must
+ * be greater than or equal to the size of the darray. */
+static inline void
+rb_darray_resize_capa_impl(void *ptr_to_ary, size_t new_capa, size_t header_size, size_t element_size,
+                           void *(*realloc_mul_add_impl)(void *, size_t, size_t, size_t))
+{
+    rb_darray_meta_t **ptr_to_ptr_to_meta = ptr_to_ary;
+    rb_darray_meta_t *meta = *ptr_to_ptr_to_meta;
+
+    rb_darray_meta_t *new_ary = realloc_mul_add_impl(meta, new_capa, element_size, header_size);
+
+    if (meta == NULL) {
+        /* First allocation. Initialize size. On subsequence allocations
+         * realloc takes care of carrying over the size. */
+        new_ary->size = 0;
+    }
+
+    RUBY_ASSERT(new_ary->size <= new_capa);
+
+    new_ary->capa = new_capa;
+
+    // We don't have access to the type of the dynamic array in function context.
+    // Write out result with memcpy to avoid strict aliasing issue.
+    memcpy(ptr_to_ary, &new_ary, sizeof(new_ary));
 }
 
 // Internal function
 // Ensure there is space for one more element.
 // Note: header_size can be bigger than sizeof(rb_darray_meta_t) when T is __int128_t, for example.
 static inline void
-rb_darray_ensure_space(void *ptr_to_ary, size_t header_size, size_t element_size)
+rb_darray_ensure_space(void *ptr_to_ary, size_t header_size, size_t element_size,
+                       void *(*realloc_mul_add_impl)(void *, size_t, size_t, size_t))
 {
     rb_darray_meta_t **ptr_to_ptr_to_meta = ptr_to_ary;
     rb_darray_meta_t *meta = *ptr_to_ptr_to_meta;
@@ -138,25 +270,12 @@ rb_darray_ensure_space(void *ptr_to_ary, size_t header_size, size_t element_size
     // Double the capacity
     size_t new_capa = current_capa == 0 ? 1 : current_capa * 2;
 
-    rb_darray_meta_t *doubled_ary = rb_xrealloc_mul_add(meta, new_capa, element_size, header_size);
-    // rb_xrealloc functions guarantee that NULL is not returned
-    assert(doubled_ary != NULL);
-
-    if (meta == NULL) {
-        // First allocation. Initialize size. On subsequence allocations
-        // realloc takes care of carrying over the size.
-        doubled_ary->size = 0;
-    }
-
-    doubled_ary->capa = new_capa;
-
-    // We don't have access to the type of the dynamic array in function context.
-    // Write out result with memcpy to avoid strict aliasing issue.
-    memcpy(ptr_to_ary, &doubled_ary, sizeof(doubled_ary));
+    rb_darray_resize_capa_impl(ptr_to_ary, new_capa, header_size, element_size, realloc_mul_add_impl);
 }
 
 static inline void
-rb_darray_make_impl(void *ptr_to_ary, size_t array_size, size_t header_size, size_t element_size)
+rb_darray_make_impl(void *ptr_to_ary, size_t array_size, size_t header_size, size_t element_size,
+                    void *(*calloc_mul_add_impl)(size_t, size_t, size_t))
 {
     rb_darray_meta_t **ptr_to_ptr_to_meta = ptr_to_ary;
     if (array_size == 0) {
@@ -164,9 +283,7 @@ rb_darray_make_impl(void *ptr_to_ary, size_t array_size, size_t header_size, siz
         return;
     }
 
-    rb_darray_meta_t *meta = rb_xcalloc_mul_add(array_size, element_size, header_size);
-    // rb_xcalloc functions guarantee that NULL is not returned
-    assert(meta != NULL);
+    rb_darray_meta_t *meta = calloc_mul_add_impl(array_size, element_size, header_size);
 
     meta->size = array_size;
     meta->capa = array_size;
diff --git a/debug.c b/debug.c
index 3dd0f71906..1a2c27a5be 100644
--- a/debug.c
+++ b/debug.c
@@ -53,16 +53,11 @@ const union {
     rb_econv_result_t           econv_result;
     enum ruby_preserved_encindex encoding_index;
     enum ruby_robject_flags     robject_flags;
-#if !USE_RVARGC
-    enum ruby_robject_consts    robject_consts;
-#endif
     enum ruby_rmodule_flags     rmodule_flags;
     enum ruby_rstring_flags     rstring_flags;
-#if !USE_RVARGC
-    enum ruby_rstring_consts    rstring_consts;
-#endif
     enum ruby_rarray_flags      rarray_flags;
     enum ruby_rarray_consts     rarray_consts;
+    enum rbimpl_typeddata_flags rtypeddata_consts;
     enum {
         RUBY_FMODE_READABLE		= FMODE_READABLE,
         RUBY_FMODE_WRITABLE		= FMODE_WRITABLE,
@@ -76,7 +71,7 @@ const union {
         RUBY_FMODE_NOREVLOOKUP		= 0x00000100,
         RUBY_FMODE_TRUNC		= FMODE_TRUNC,
         RUBY_FMODE_TEXTMODE		= FMODE_TEXTMODE,
-        RUBY_FMODE_PREP 		= 0x00010000,
+        RUBY_FMODE_EXTERNAL		= 0x00010000,
         RUBY_FMODE_SETENC_BY_BOM	= FMODE_SETENC_BY_BOM,
         RUBY_FMODE_UNIX 		= 0x00200000,
         RUBY_FMODE_INET 		= 0x00400000,
@@ -118,7 +113,7 @@ ruby_debug_printf(const char *format, ...)
     va_end(ap);
 }
 
-#include "gc.h"
+#include "internal/gc.h"
 
 VALUE
 ruby_debug_print_value(int level, int debug_level, const char *header, VALUE obj)
@@ -153,22 +148,28 @@ 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));
+        fprintf(stderr, "DBG> %s: %s (id: %d, line: %d, location: (%d,%d)-(%d,%d))\n",
+                header, ruby_node_name(nd_type(node)), nd_node_id(node), nd_line(node),
+                nd_first_lineno(node), nd_first_column(node),
+                nd_last_lineno(node), nd_last_column(node));
     }
     return (NODE *)node;
 }
 
 void
+ruby_debug_print_n(const NODE *node)
+{
+    ruby_debug_print_node(0, 1, "", 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>
@@ -183,9 +184,9 @@ ruby_env_debug_option(const char *str, int len, void *arg)
     int ov;
     size_t retlen;
     unsigned long n;
+#define NAME_MATCH(name) (len == sizeof(name) - 1 && strncmp(str, (name), len) == 0)
 #define SET_WHEN(name, var, val) do {	    \
-        if (len == sizeof(name) - 1 &&	    \
-            strncmp(str, (name), len) == 0) { \
+        if (NAME_MATCH(name)) { \
             (var) = (val);		    \
             return 1;			    \
         }				    \
@@ -213,31 +214,29 @@ ruby_env_debug_option(const char *str, int len, void *arg)
             --len; \
         } \
         if (len > 0) { \
-            fprintf(stderr, "ignored "name" option: `%.*s'\n", len, str); \
+            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);
+    if (NAME_MATCH_VALUE(name)) { \
+        if (!len) req; \
+        else SET_UINT_LIST(name, vals, num); \
+        return 1; \
+    }
 
-    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);
+    if (NAME_MATCH("gc_stress")) {
+        rb_gc_initial_stress_set(Qtrue);
         return 1;
     }
+    SET_WHEN("core", ruby_enable_coredump, 1);
+    SET_WHEN("ci", ruby_on_ci, 1);
+    SET_WHEN_UINT("rgengc", &ruby_rgengc_debug, 1, ruby_rgengc_debug = 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;
-    }
+    SET_WHEN_UINT("codepage", ruby_w32_codepage, numberof(ruby_w32_codepage),
+                  fprintf(stderr, "missing codepage argument"));
 #endif
     return 0;
 }
@@ -291,12 +290,20 @@ static const char *dlf_type_names[] = {
     "func",
 };
 
+#ifdef MAX_PATH
+#define DEBUG_LOG_MAX_PATH (MAX_PATH-1)
+#else
+#define DEBUG_LOG_MAX_PATH 255
+#endif
+
 static struct {
     char *mem;
     unsigned int cnt;
     struct debug_log_filter filters[MAX_DEBUG_LOG_FILTER_NUM];
     unsigned int filters_num;
+    bool show_pid;
     rb_nativethread_lock_t lock;
+    char output_file[DEBUG_LOG_MAX_PATH+1];
     FILE *output;
 } debug_log;
 
@@ -398,7 +405,39 @@ setup_debug_log(void)
         }
         else {
             ruby_debug_log_mode |= ruby_debug_log_file;
-            if ((debug_log.output = fopen(log_config, "w")) == NULL) {
+
+            // pid extension with %p
+            unsigned long len = strlen(log_config);
+
+            for (unsigned long i=0, j=0; i<len; i++) {
+                const char c = log_config[i];
+
+                if (c == '%') {
+                    i++;
+                    switch (log_config[i]) {
+                      case '%':
+                        debug_log.output_file[j++] = '%';
+                        break;
+                      case 'p':
+                        snprintf(debug_log.output_file + j, DEBUG_LOG_MAX_PATH - j, "%d", getpid());
+                        j = strlen(debug_log.output_file);
+                        break;
+                      default:
+                        fprintf(stderr, "can not parse RUBY_DEBUG_LOG filename: %s\n", log_config);
+                        exit(1);
+                    }
+                }
+                else {
+                    debug_log.output_file[j++] = c;
+                }
+
+                if (j >= DEBUG_LOG_MAX_PATH) {
+                    fprintf(stderr, "RUBY_DEBUG_LOG=%s is too long\n", log_config);
+                    exit(1);
+                }
+            }
+
+            if ((debug_log.output = fopen(debug_log.output_file, "w")) == NULL) {
                 fprintf(stderr, "can not open %s for RUBY_DEBUG_LOG\n", log_config);
                 exit(1);
             }
@@ -409,9 +448,17 @@ setup_debug_log(void)
                 (ruby_debug_log_mode & ruby_debug_log_memory) ? "[mem]" : "",
                 (ruby_debug_log_mode & ruby_debug_log_stderr) ? "[stderr]" : "",
                 (ruby_debug_log_mode & ruby_debug_log_file)   ? "[file]" : "");
+        if (debug_log.output_file[0]) {
+            fprintf(stderr, "RUBY_DEBUG_LOG filename=%s\n", debug_log.output_file);
+        }
+
         rb_nativethread_lock_initialize(&debug_log.lock);
 
         setup_debug_log_filter();
+
+        if (getenv("RUBY_DEBUG_LOG_PID")) {
+            debug_log.show_pid = true;
+        }
     }
 }
 
@@ -450,7 +497,7 @@ check_filter(const char *str, const struct debug_log_filter *filter, bool *state
 //   (func_name or file_name) contains baz or boo
 //
 // RUBY_DEBUG_LOG_FILTER=foo,bar,-baz,-boo
-// retunrs true if
+// returns true if
 //   (func_name or file_name) contains foo or bar
 // or
 //   (func_name or file_name) doesn't contain baz and
@@ -507,10 +554,16 @@ ruby_debug_log(const char *file, int line, const char *func_name, const char *fm
     int len = 0;
     int r = 0;
 
+    if (debug_log.show_pid) {
+        r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN, "pid:%d\t", getpid());
+        if (r < 0) rb_bug("ruby_debug_log returns %d", r);
+        len += r;
+    }
+
     // 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);
+        if (r < 0) rb_bug("ruby_debug_log returns %d", r);
         len += r;
     }
 
@@ -529,41 +582,67 @@ ruby_debug_log(const char *file, int line, const char *func_name, const char *fm
     // 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);
+        if (r < 0) rb_bug("ruby_debug_log returns %d", r);
         len += r;
     }
 
-    if (rb_current_execution_context(false)) {
-        // 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;
+    rb_execution_context_t *ec = rb_current_execution_context(false);
+
+    // Ruby location
+    int ruby_line;
+    const char *ruby_file = ec ? rb_source_location_cstr(&ruby_line) : NULL;
+
+    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", r);
+        len += r;
+    }
+
+#ifdef RUBY_NT_SERIAL
+    // native thread information
+    if (len < MAX_DEBUG_LOG_MESSAGE_LEN) {
+        r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN - len, "\tnt:%d", ruby_nt_serial);
+        if (r < 0) rb_bug("ruby_debug_log returns %d", r);
+        len += r;
+    }
+#endif
+
+    if (ec) {
+        rb_thread_t *th = ec ? rb_ec_thread_ptr(ec) : NULL;
 
         // ractor information
         if (ruby_single_main_ractor == NULL) {
-            rb_ractor_t *cr = GET_RACTOR();
+            rb_ractor_t *cr = th ? th->ractor : NULL;
+            rb_vm_t *vm = GET_VM();
+
             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);
+                r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN - len, "\tr:#%d/%u (%u)",
+                             cr ? (int)rb_ractor_id(cr) : -1, vm->ractor.cnt, vm->ractor.sched.running_cnt);
+
+                if (r < 0) rb_bug("ruby_debug_log returns %d", r);
                 len += r;
             }
         }
 
         // thread information
-        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:%u", rb_th_serial(th));
-            if (r < 0) rb_bug("ruby_debug_log returns %d\n", r);
+        if (th && r && len < MAX_DEBUG_LOG_MESSAGE_LEN) {
+            rb_execution_context_t *rec = th->ractor ? th->ractor->threads.running_ec : NULL;
+            const rb_thread_t *rth = rec ? rec->thread_ptr : NULL;
+            const rb_thread_t *sth = th->ractor ? th->ractor->threads.sched.running : NULL;
+
+            if (rth != th || sth != th) {
+                r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN - len, "\tth:%u (rth:%d,sth:%d)",
+                             rb_th_serial(th), rth ? (int)rb_th_serial(rth) : -1, sth ? (int)rb_th_serial(sth) : -1);
+            }
+            else {
+                r = snprintf(buff + len, MAX_DEBUG_LOG_MESSAGE_LEN - len, "\tth:%u", rb_th_serial(th));
+            }
+            if (r < 0) rb_bug("ruby_debug_log returns %d", r);
             len += r;
         }
     }
@@ -601,7 +680,7 @@ debug_log_dump(FILE *out, unsigned int n)
             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);;
+            const char *mesg = RUBY_DEBUG_LOG_MEM_ENTRY(index);
             fprintf(out, "%4u: %s\n", debug_log.cnt - size + i, mesg);
         }
     }
@@ -630,4 +709,22 @@ ruby_debug_log_dump(const char *fname, unsigned int n)
         fclose(fp);
     }
 }
+
+#else
+
+#undef ruby_debug_log
+void
+ruby_debug_log(const char *file, int line, const char *func_name, const char *fmt, ...)
+{
+    va_list args;
+
+    fprintf(stderr, "[%s:%d] %s: ", file, line, func_name);
+
+    va_start(args, fmt);
+    vfprintf(stderr, fmt, args);
+    va_end(args);
+
+    fprintf(stderr, "\n");
+}
+
 #endif // #if USE_RUBY_DEBUG_LOG
diff --git a/debug_counter.c b/debug_counter.c
index 0fd0e20c6d..3dcc4c6a3a 100644
--- a/debug_counter.c
+++ b/debug_counter.c
@@ -16,7 +16,7 @@
 
 #if USE_DEBUG_COUNTER
 
-static const char *const debug_counter_names[] = {
+const char *const rb_debug_counter_names[] = {
 #define DEBUG_COUNTER_NAME_EMPTY "" /* Suppress -Wstring-concatenation */
     DEBUG_COUNTER_NAME_EMPTY
 #undef DEBUG_COUNTER_NAME_EMPTY
@@ -25,10 +25,8 @@ static const char *const debug_counter_names[] = {
 #undef RB_DEBUG_COUNTER
 };
 
-MJIT_SYMBOL_EXPORT_BEGIN
-size_t rb_debug_counter[numberof(debug_counter_names)];
+size_t rb_debug_counter[numberof(rb_debug_counter_names)];
 void rb_debug_counter_add_atomic(enum rb_debug_counter_type type, int add);
-MJIT_SYMBOL_EXPORT_END
 
 static rb_nativethread_lock_t debug_counter_lock;
 
@@ -56,17 +54,7 @@ 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;
-        }
+        rb_debug_counter[i] = 0;
     }
 }
 
@@ -77,7 +65,7 @@ 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];
+            names_ptr[i] = rb_debug_counter_names[i];
         }
     }
     if (counters_ptr != NULL) {
@@ -107,7 +95,7 @@ rb_debug_counter_show_results(const char *msg)
         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_names[i],
                     rb_debug_counter[i]);
         }
     }
diff --git a/debug_counter.h b/debug_counter.h
index bcc19f6231..c8d8ed8f11 100644
--- a/debug_counter.h
+++ b/debug_counter.h
@@ -49,7 +49,7 @@ RB_DEBUG_COUNTER(cc_temp)       //           dummy CC (stack-allocated)
 RB_DEBUG_COUNTER(cc_found_in_ccs)      // count for CC lookup success in CCS
 RB_DEBUG_COUNTER(cc_not_found_in_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_ent_invalidate) // count for invalidating cc (cc->klass = Qundef)
 RB_DEBUG_COUNTER(cc_cme_invalidate) // count for invalidating CME
 
 RB_DEBUG_COUNTER(cc_invalidate_leaf)          // count for invalidating klass if klass has no-subclasses
@@ -100,6 +100,13 @@ RB_DEBUG_COUNTER(ccf_opt_block_call)
 RB_DEBUG_COUNTER(ccf_opt_struct_aref)
 RB_DEBUG_COUNTER(ccf_opt_struct_aset)
 RB_DEBUG_COUNTER(ccf_super_method)
+RB_DEBUG_COUNTER(ccf_cfunc_other)
+RB_DEBUG_COUNTER(ccf_cfunc_only_splat)
+RB_DEBUG_COUNTER(ccf_cfunc_only_splat_kw)
+RB_DEBUG_COUNTER(ccf_iseq_bmethod)
+RB_DEBUG_COUNTER(ccf_noniseq_bmethod)
+RB_DEBUG_COUNTER(ccf_opt_send_complex)
+RB_DEBUG_COUNTER(ccf_opt_send_simple)
 
 /*
  * control frame push counts.
@@ -127,29 +134,22 @@ 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_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_noobject)
-RB_DEBUG_COUNTER(ivar_set_ic_hit)
-RB_DEBUG_COUNTER(ivar_set_ic_miss)
-RB_DEBUG_COUNTER(ivar_set_ic_miss_iv_hit)
-RB_DEBUG_COUNTER(ivar_set_ic_miss_noobject)
-RB_DEBUG_COUNTER(ivar_get_base)
-RB_DEBUG_COUNTER(ivar_set_base)
-RB_DEBUG_COUNTER(ivar_get_ic_miss_set)
-RB_DEBUG_COUNTER(ivar_get_cc_miss_set)
-RB_DEBUG_COUNTER(ivar_get_ic_miss_unset)
-RB_DEBUG_COUNTER(ivar_get_cc_miss_unset)
+/* instance variable counts */
+RB_DEBUG_COUNTER(ivar_get_obj_hit)  // Only T_OBJECT hits
+RB_DEBUG_COUNTER(ivar_get_obj_miss) // Only T_OBJECT misses
+RB_DEBUG_COUNTER(ivar_get_ic_hit)   // All hits
+RB_DEBUG_COUNTER(ivar_get_ic_miss)  // All misses
+RB_DEBUG_COUNTER(ivar_set_ic_hit)   // All hits
+RB_DEBUG_COUNTER(ivar_set_obj_hit)  // Only T_OBJECT hits
+RB_DEBUG_COUNTER(ivar_set_obj_miss) // Only T_OBJECT misses
+RB_DEBUG_COUNTER(ivar_set_ic_miss)  // All misses
+RB_DEBUG_COUNTER(ivar_set_ic_miss_noobject)  // Miss because non T_OBJECT
+RB_DEBUG_COUNTER(ivar_get_base) // Calls to `rb_ivar_get` (very slow path)
+RB_DEBUG_COUNTER(ivar_set_base) // Calls to `ivar_set` (very slow path)
+RB_DEBUG_COUNTER(ivar_get_ic_miss_set)   // Misses on IV reads where the cache was wrong
+RB_DEBUG_COUNTER(ivar_get_cc_miss_set)   // Misses on attr_reader where the cache was wrong
+RB_DEBUG_COUNTER(ivar_get_ic_miss_unset) // Misses on IV read where the cache wasn't set
+RB_DEBUG_COUNTER(ivar_get_cc_miss_unset) // Misses on attr_reader where the cache wasn't set
 
 /* local variable counts
  *
@@ -185,8 +185,7 @@ RB_DEBUG_COUNTER(gc_major_force)
 RB_DEBUG_COUNTER(gc_major_oldmalloc)
 
 RB_DEBUG_COUNTER(gc_enter_start)
-RB_DEBUG_COUNTER(gc_enter_mark_continue)
-RB_DEBUG_COUNTER(gc_enter_sweep_continue)
+RB_DEBUG_COUNTER(gc_enter_continue)
 RB_DEBUG_COUNTER(gc_enter_rest)
 RB_DEBUG_COUNTER(gc_enter_finalizer)
 
@@ -215,7 +214,6 @@ RB_DEBUG_COUNTER(gc_isptr_maybe)
  * * [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
@@ -241,8 +239,8 @@ 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_obj_too_complex)
 
 RB_DEBUG_COUNTER(obj_str_ptr)
 RB_DEBUG_COUNTER(obj_str_embed)
@@ -251,7 +249,6 @@ 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)
 /*
@@ -275,11 +272,9 @@ 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)
@@ -310,16 +305,18 @@ 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)
 RB_DEBUG_COUNTER(obj_imemo_constcache)
+RB_DEBUG_COUNTER(obj_imemo_fields)
+
+RB_DEBUG_COUNTER(opt_new_hit)
+RB_DEBUG_COUNTER(opt_new_miss)
 
 /* ar_table */
 RB_DEBUG_COUNTER(artable_hint_hit)
@@ -334,11 +331,6 @@ 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)
-
 // VM sync
 RB_DEBUG_COUNTER(vm_sync_lock)
 RB_DEBUG_COUNTER(vm_sync_lock_enter)
@@ -346,34 +338,6 @@ RB_DEBUG_COUNTER(vm_sync_lock_enter_nb)
 RB_DEBUG_COUNTER(vm_sync_lock_enter_cr)
 RB_DEBUG_COUNTER(vm_sync_barrier)
 
-/* 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)
@@ -394,7 +358,7 @@ RB_DEBUG_COUNTER(load_path_is_not_realpath)
 
 enum rb_debug_counter_type {
 #define RB_DEBUG_COUNTER(name) RB_DEBUG_COUNTER_##name,
-#include __FILE__
+#include "debug_counter.h"
     RB_DEBUG_COUNTER_MAX
 #undef RB_DEBUG_COUNTER
 };
diff --git a/defs/gmake.mk b/defs/gmake.mk
index 6064ae40d8..f4b3d79990 100644
--- a/defs/gmake.mk
+++ b/defs/gmake.mk
@@ -1,20 +1,20 @@
 # -*- mode: makefile-gmake; indent-tabs-mode: t -*-
 
 reconfig config.status: export MAKE:=$(MAKE)
+export BASERUBY:=$(BASERUBY)
+export GIT
 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)))
 
 ifeq ($(GITHUB_ACTIONS),true)
-override ACTIONS_GROUP = @echo "\#\#[group]$(patsubst yes-%,%,$@)"
-override ACTIONS_ENDGROUP = @echo "\#\#[endgroup]"
+# 93(bright yellow) is copied from .github/workflows/mingw.yml
+override ACTIONS_GROUP = @echo "::group::$(@:yes-%=%)"
+override ACTIONS_ENDGROUP = @echo "::endgroup::"
 endif
 
 ifneq ($(filter darwin%,$(target_os)),)
-# Remove debug option not to generate thousands of .dSYM
-MJIT_DEBUGFLAGS := $(filter-out -g%,$(MJIT_DEBUGFLAGS))
-
 INSTRUBY_ENV += SDKROOT=
 endif
 INSTRUBY_ARGS += --gnumake
@@ -26,8 +26,8 @@ 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 := $(patsubst exam,test-bundled-gems test-bundler-parallel check,$(TEST_TARGETS))
+TEST_TARGETS := $(patsubst check,test-syntax-suggest test-spec test-all test-tool test-short,$(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))
@@ -37,11 +37,15 @@ 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_TARGETS := $(patsubst test-bundled-gems,test-bundled-gems-run,$(TEST_TARGETS))
+TEST_TARGETS := $(patsubst test-basic,test-basic test-leaked-globals,$(TEST_TARGETS))
+TEST_TARGETS := $(patsubst test-bundled-gems,test-bundled-gems-spec test-bundled-gems-run,$(TEST_TARGETS))
 TEST_TARGETS := $(patsubst test-bundled-gems-run,test-bundled-gems-run $(PREPARE_BUNDLED_GEMS),$(TEST_TARGETS))
 TEST_TARGETS := $(patsubst test-bundled-gems-prepare,test-bundled-gems-prepare $(PRECHECK_BUNDLED_GEMS) test-bundled-gems-fetch,$(TEST_TARGETS))
+TEST_TARGETS := $(patsubst test-bundler-parallel,test-bundler-parallel $(PREPARE_BUNDLER),$(TEST_TARGETS))
+TEST_TARGETS := $(patsubst test-syntax-suggest,test-syntax-suggest $(PREPARE_SYNTAX_SUGGEST),$(TEST_TARGETS))
 TEST_DEPENDS := $(filter-out test-short $(TEST_TARGETS),$(TEST_DEPENDS))
 TEST_DEPENDS += $(if $(filter great exam love check,$(MAKECMDGOALS)),all exts)
+TEST_TARGETS := $(patsubst yes-%,%,$(filter-out no-%,$(TEST_TARGETS)))
 endif
 
 in-srcdir := $(if $(filter-out .,$(srcdir)),$(CHDIR) $(srcdir) &&)
@@ -54,6 +58,13 @@ ifeq ($(if $(filter all main exts enc trans libencs libenc libtrans \
 -include $(SHOWFLAGS)
 endif
 
+ifeq ($(HAVE_BASERUBY):$(HAVE_GIT),yes:yes)
+override modified := $(shell $(BASERUBY) -C $(srcdir) tool/file2lastrev.rb --modified='%Y %m %d')
+override RUBY_RELEASE_YEAR := $(word 1,$(modified))
+override RUBY_RELEASE_MONTH := $(word 2,$(modified))
+override RUBY_RELEASE_DAY := $(word 3,$(modified))
+endif
+
 ifneq ($(filter universal-%,$(arch)),)
 define archcmd
 %.$(1).S: %.c
@@ -69,7 +80,7 @@ define archcmd
 %.i: %.$(1).i
 endef
 
-$(foreach arch,$(arch_flags),\
+$(foreach arch,$(filter -arch=%,$(subst -arch ,-arch=,$(ARCH_FLAG))),\
 	$(eval $(call archcmd,$(patsubst -arch=%,%,$(value arch)),$(patsubst -arch=%,-arch %,$(value arch)))))
 endif
 
@@ -81,15 +92,32 @@ $(addprefix yes-,$(TEST_TARGETS)): $(TEST_DEPENDS)
 endif
 
 ORDERED_TEST_TARGETS := $(filter $(TEST_TARGETS), \
-	btest-ruby test-knownbug test-basic \
+	btest-ruby test-knownbug test-leaked-globals test-basic \
 	test-testframework test-tool test-ruby test-all \
-	test-spec test-bundler-prepare test-bundler test-bundler-parallel \
+	test-spec test-syntax-suggest-prepare test-syntax-suggest \
+	test-bundler-prepare test-bundler test-bundler-parallel \
 	test-bundled-gems-precheck test-bundled-gems-fetch \
 	test-bundled-gems-prepare test-bundled-gems-run \
+	test-bundled-gems-spec \
+	)
+
+# grep ^yes-test-.*-precheck: template/Makefile.in defs/gmake.mk common.mk
+test_prechecks := $(filter $(ORDERED_TEST_TARGETS),\
+	test-leaked-globals \
+	test-all \
+	test-spec \
+	test-syntax-suggest \
+	test-bundler \
+	test-bundler-parallel \
+	test-bundled-gems\
 	)
-prev_test := $(if $(filter test-spec,$(ORDERED_TEST_TARGETS)),test-spec-precheck)
+prev_test := $(subst test-bundler-parallel,test-bundler,$(test_prechecks))
+prev_test := $(addsuffix -precheck,$(prev_test))
+first_test_prechecks := $(prev_test)
+
 $(foreach test,$(ORDERED_TEST_TARGETS), \
-	$(eval yes-$(value test) no-$(value test): $(value prev_test)); \
+	$(eval yes-$(value test): $(addprefix yes-,$(value prev_test))); \
+	$(eval no-$(value test): $(addprefix no-,$(value prev_test))); \
 	$(eval prev_test := $(value test)))
 endif
 
@@ -134,6 +162,10 @@ endif
 
 config.status: $(wildcard config.cache)
 
+ifneq (ruby,$(PROGRAM))
+ruby: $(PROGRAM);
+endif
+
 STUBPROGRAM = rubystub$(EXEEXT)
 IGNOREDPATTERNS = %~ .% %.orig %.rej \#%\#
 SCRIPTBINDIR := $(if $(EXEEXT),,exec/)
@@ -167,23 +199,30 @@ $(SCRIPTBINDIR):
 	$(Q) mkdir $@
 
 .PHONY: commit
-commit: $(if $(filter commit,$(MAKECMDGOALS)),$(filter-out commit,$(MAKECMDGOALS))) up
+COMMIT_PREPARE := $(subst :,\:,$(filter-out commit do-commit,$(MAKECMDGOALS))) up
+
+commit: pre-commit $(DOT_WAIT) do-commit $(DOT_WAIT) post_commit
+pre-commit: $(COMMIT_PREPARE)
+do-commit: $(if $(DOT_WAIT),,pre-commit)
 	@$(BASERUBY) -C "$(srcdir)" -I./tool/lib -rvcs -e 'VCS.detect(".").commit'
+post-commit: $(if $(DOT_WAIT),,do-commit)
 	+$(Q) \
 	{ \
 	  $(in-srcdir) \
-	  exec sed -f tool/prereq.status defs/gmake.mk template/Makefile.in common.mk; \
+	  exec sed -f tool/prereq.status defs/gmake.mk template/Makefile.in common.mk depend; \
 	} | \
-	$(MAKE) $(mflags) Q=$(Q) ECHO=$(ECHO) srcdir="$(srcdir)" srcs_vpath="" CHDIR="$(CHDIR)" \
-		BOOTSTRAPRUBY="$(BOOTSTRAPRUBY)" MINIRUBY="$(BASERUBY)" BASERUBY="$(BASERUBY)" \
+	$(MAKE) $(mflags) Q=$(Q) ECHO=$(ECHO) \
+		top_srcdir="$(top_srcdir)" srcdir="$(srcdir)" srcs_vpath="" CHDIR="$(CHDIR)" \
+		BOOTSTRAPRUBY="$(BOOTSTRAPRUBY)" BOOTSTRAPRUBY_OPT="$(BOOTSTRAPRUBY_OPT)" \
+		MINIRUBY="$(BASERUBY)" BASERUBY="$(BASERUBY)" HAVE_BASERUBY="$(HAVE_BASERUBY)" \
 		VCSUP="" ENC_MK=.top-enc.mk REVISION_FORCE=PHONY CONFIGURE="$(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)
+COMMIT_GPG_SIGN = $(shell $(GIT_IN_SRC) config commit.gpgsign)
+REMOTE_GITHUB_URL = $(shell $(GIT_IN_SRC) config remote.github.url)
 COMMITS_NOTES = commits
 
 .PHONY: fetch-github
@@ -198,19 +237,19 @@ define fetch-github
 	$(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)
+	  $(GIT_IN_SRC) remote add github $(GITHUB_RUBY_URL)
+	  $(GIT_IN_SRC) config --add remote.github.fetch +refs/notes/$(COMMITS_NOTES):refs/notes/$(COMMITS_NOTES)
 	  $(eval REMOTE_GITHUB_URL := $(GITHUB_RUBY_URL))
 	)
-	$(if $(shell $(GIT) -C "$(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)"
+	$(if $(shell $(GIT_IN_SRC) rev-parse "github/pull/$(1)/head" -- 2> /dev/null),
+	    $(GIT_IN_SRC) branch -f "gh-$(1)" "github/pull/$(1)/head",
+	    $(GIT_IN_SRC) fetch -f github "pull/$(1)/head:gh-$(1)"
 	)
 endef
 
 .PHONY: checkout-github
 checkout-github: fetch-github
-	$(GIT) -C "$(srcdir)" checkout "gh-$(PR)"
+	$(GIT_IN_SRC) checkout "gh-$(PR)"
 
 .PHONY: update-github
 update-github: fetch-github
@@ -223,25 +262,25 @@ update-github: fetch-github
 	$(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_IN_SRC) 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
+	$(GIT_IN_SRC) remote add fork-$(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)
+	$(GIT_IN_SRC) remote rm fork-$(PR)
+	$(GIT_IN_SRC) worktree remove $(notdir $(GITHUB_UPDATE_WORKTREE))
+	$(GIT_IN_SRC) branch -D gh-$(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_BASE := $(shell $(GIT_LOG_FORMAT)%H -1)
+	$(eval GITHUB_MERGE_BRANCH := $(shell $(GIT_IN_SRC) symbolic-ref --short HEAD))
 	$(eval GITHUB_MERGE_WORKTREE := $(shell mktemp -d "$(srcdir)/gh-$(1)-XXXXXX"))
-	$(GIT) -C "$(srcdir)" worktree prune
-	$(GIT) -C "$(srcdir)" worktree add $(notdir $(GITHUB_MERGE_WORKTREE)) "gh-$(1)"
+	$(GIT_IN_SRC) worktree prune
+	$(GIT_IN_SRC) 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)), \
@@ -256,7 +295,7 @@ fetch-github-%:
 
 .PHONY: checkout-github-%
 checkout-github-%: fetch-github-%
-	$(GIT) -C "$(srcdir)" checkout "gh-$*"
+	$(GIT_IN_SRC) checkout "gh-$*"
 
 .PHONY: pr-% pull-github-%
 pr-% pull-github-%: fetch-github-%
@@ -266,17 +305,16 @@ 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]" \
+	"  tags:                  generate TAGS file" \
 	""
 
-extract-gems: $(HAVE_BASERUBY:yes=update-gems)
-
 # 1. squeeze spaces
 # 2. strip and skip comment/empty lines
 # 3. "gem x.y.z URL xxxxxx" -> "gem|x.y.z|xxxxxx|URL"
 # 4. "gem x.y.z URL" -> "gem-x.y.z"
 bundled-gems := $(shell sed \
 	-e 's/[ 	][ 	]*/ /g' \
-	-e 's/^ //;/\#/d;s/ *$$//;/^$$/d' \
+	-e 's/^ //;s/\#.*//;s/ *$$//;/^$$/d' \
 	$(if $(filter yes,$(HAVE_GIT)), \
 	-e 's/^\(.*\) \(.*\) \(.*\) \(.*\)/\1|\2|\4|\3/' \
 	) \
@@ -286,8 +324,19 @@ bundled-gems := $(shell sed \
 bundled-gems-rev := $(filter-out $(subst |,,$(bundled-gems)),$(bundled-gems))
 bundled-gems := $(filter-out $(bundled-gems-rev),$(bundled-gems))
 
+# calls $(1) with name, version, revision, URL
+foreach-bundled-gems-rev = \
+    $(foreach g,$(bundled-gems-rev),$(call foreach-bundled-gems-rev-0,$(1),$(subst |, ,$(value g))))
+foreach-bundled-gems-rev-0 = \
+    $(call $(1),$(word 1,$(2)),$(word 2,$(2)),$(word 3,$(2)),$(word 4,$(2)))
+bundled-gem-gemfile = $(srcdir)/gems/$(1)-$(2).gem
+bundled-gem-gemspec = $(srcdir)/gems/src/$(1)/$(1).gemspec
+bundled-gem-extracted = $(srcdir)/.bundle/gems/$(1)-$(2)
+bundled-gem-revision = $(srcdir)/.bundle/.timestamp/$(1).revision
+
 update-gems: | $(patsubst %,$(srcdir)/gems/%.gem,$(bundled-gems))
-update-gems: | $(foreach g,$(bundled-gems-rev),$(srcdir)/gems/src/$(word 1,$(subst |, ,$(value g))))
+update-gems: | $(call foreach-bundled-gems-rev,bundled-gem-gemfile)
+update-gems: | $(call foreach-bundled-gems-rev,bundled-gem-gemspec)
 
 test-bundler-precheck: | $(srcdir)/.bundle/cache
 
@@ -307,8 +356,7 @@ $(srcdir)/gems/%.gem:
 	    -e 'FileUtils.rm_rf(old.map{'"|n|"'n.chomp(".gem")})'
 
 extract-gems: | $(patsubst %,$(srcdir)/.bundle/gems/%,$(bundled-gems))
-extract-gems: | $(foreach g,$(bundled-gems-rev), \
-	$(srcdir)/.bundle/gems/$(word 1,$(subst |, ,$(value g)))-$(word 2,$(subst |, ,$(value g))))
+extract-gems: | $(call foreach-bundled-gems-rev,bundled-gem-extracted)
 
 $(srcdir)/.bundle/gems/%: $(srcdir)/gems/%.gem | .bundle/gems
 	$(ECHO) Extracting bundle gem $*...
@@ -316,27 +364,44 @@ $(srcdir)/.bundle/gems/%: $(srcdir)/gems/%.gem | .bundle/gems
 	    -Itool/lib -rbundled_gem \
 	    -e 'BundledGem.unpack("gems/$(@F).gem", ".bundle")'
 
-define copy-gem
-$(srcdir)/gems/src/$(1): | $(srcdir)/gems/src
+$(srcdir)/.bundle/.timestamp:
+	$(MAKEDIRS) $@
+
+define build-gem
+$(srcdir)/gems/src/$(1)/.git: | $(srcdir)/gems/src
 	$(ECHO) Cloning $(4)
-	$(Q) $(GIT) clone $(4) $$(@)
+	$(Q) $(GIT) clone --depth=1 --no-tags $(4) $$(@D)
 
-$(srcdir)/.bundle/gems/$(1)-$(2): | $(srcdir)/gems/src/$(1) .bundle/gems
-	$(ECHO) Copying $(1)@$(3) to $$(@F)
+$(bundled-gem-revision): \
+	$(if $(if $(wildcard $$(@)),$(filter $(3),$(shell cat $$(@)))),,PHONY) \
+	| $(srcdir)/.bundle/.timestamp $(srcdir)/gems/src/$(1)/.git
+	$(ECHO) Update $(1) to $(3)
 	$(Q) $(CHDIR) "$(srcdir)/gems/src/$(1)" && \
-	    $(GIT) fetch origin $(3) && \
-	    $(GIT) checkout --detach $(3) && \
-	:
+	    if [ `$(GIT) rev-parse HEAD` != $(3) ]; then \
+	        $(GIT) fetch origin $(3) && \
+	        $(GIT) checkout --detach $(3) && \
+	        :; \
+	    fi
+	echo $(3) | $(IFCHANGE) $$(@) -
+
+# The repository of minitest does not include minitest.gemspec because it uses hoe.
+# This creates a dummy gemspec.
+$(bundled-gem-gemspec): $(bundled-gem-revision) \
+	| $(srcdir)/gems/src/$(1)/.git
+	$(Q) $(BASERUBY) -I$(tooldir)/lib -rbundled_gem -e 'BundledGem.dummy_gemspec(*ARGV)' $$(@)
+
+$(bundled-gem-gemfile): $(bundled-gem-gemspec) $(bundled-gem-revision)
+	$(ECHO) Building $(1)@$(3) to $$(@)
 	$(Q) $(BASERUBY) -C "$(srcdir)" \
 	    -Itool/lib -rbundled_gem \
-	    -e 'BundledGem.copy("gems/src/$(1)/$(1).gemspec", ".bundle")'
+	    -e 'BundledGem.build("gems/src/$(1)/$(1).gemspec", "$(2)", "gems", validation: false)'
 
 endef
-define copy-gem-0
-$(call copy-gem,$(word 1,$(1)),$(word 2,$(1)),$(word 3,$(1)),$(word 4,$(1)))
+define build-gem-0
+$(eval $(call build-gem,$(1),$(2),$(3),$(4)))
 endef
 
-$(foreach g,$(bundled-gems-rev),$(eval $(call copy-gem-0,$(subst |, ,$(value g)))))
+$(call foreach-bundled-gems-rev,build-gem-0)
 
 $(srcdir)/gems/src:
 	$(MAKEDIRS) $@
@@ -344,55 +409,36 @@ $(srcdir)/gems/src:
 $(srcdir)/.bundle/gems:
 	$(MAKEDIRS) $@
 
-ifneq ($(filter update-bundled_gems refresh-gems,$(MAKECMDGOALS)),)
-update-gems: update-bundled_gems
+ifneq ($(DOT_WAIT),)
+up:: $(DOT_WAIT) after-update
 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)
-
+ifneq ($(filter update-bundled_gems refresh-gems,$(MAKECMDGOALS)),)
+update-gems: update-bundled_gems
 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) $(UNICODE_PROPERTY_FILES)
+.SECONDARY: update-unicode-files
+.SECONDARY: update-unicode-auxiliary-files
+.SECONDARY: update-unicode-ucd-emoji-files
+.SECONDARY: update-unicode-emoji-files
+
+ifneq ($(DOT_WAIT),)
+.NOTPARALLEL: update-unicode
+.NOTPARALLEL: update-unicode-files
+.NOTPARALLEL: update-unicode-auxiliary-files
+.NOTPARALLEL: update-unicode-ucd-emoji-files
+.NOTPARALLEL: update-unicode-emoji-files
+.NOTPARALLEL: $(UNICODE_FILES) $(UNICODE_PROPERTY_FILES)
+.NOTPARALLEL: $(UNICODE_AUXILIARY_FILES)
+.NOTPARALLEL: $(UNICODE_UCD_EMOJI_FILES) $(UNICODE_EMOJI_FILES)
 endif
 
 ifeq ($(HAVE_GIT),yes)
-REVISION_LATEST := $(shell $(CHDIR) $(srcdir) && $(GIT) log -1 --format=%H 2>/dev/null)
+REVISION_LATEST := $(shell $(GIT_LOG_FORMAT)%H -1 2>/dev/null)
 else
 REVISION_LATEST := update
 endif
-REVISION_IN_HEADER := $(shell sed -n 's/^\#define RUBY_FULL_REVISION "\(.*\)"/\1/p' $(wildcard $(srcdir)/revision.h revision.h) /dev/null 2>/dev/null)
+REVISION_IN_HEADER := $(shell sed '/^\#define RUBY_FULL_REVISION "\(.*\)"/!d;s//\1/;q' $(wildcard $(srcdir)/revision.h revision.h) /dev/null 2>/dev/null)
 ifeq ($(REVISION_IN_HEADER),)
 REVISION_IN_HEADER := none
 endif
@@ -401,6 +447,8 @@ $(REVISION_H): PHONY
 endif
 
 include $(top_srcdir)/yjit/yjit.mk
+include $(top_srcdir)/zjit/zjit.mk
+include $(top_srcdir)/defs/jit.mk
 
 # Query on the generated rdoc
 #
@@ -429,6 +477,10 @@ benchmark/%: miniruby$(EXEEXT) update-benchmark-driver PHONY
 	            --executables="built-ruby::$(BENCH_RUBY) --disable-gem" \
 	            $(srcdir)/$@ $(BENCH_OPTS) $(OPTS)
 
+clean-local:: TARGET_SO = $(PROGRAM) $(WPROGRAM) $(LIBRUBY_SO) $(STATIC_RUBY) miniruby goruby
+clean-local::
+	-$(Q)$(RMALL) $(cleanlibs)
+
 clean-srcs-ext::
 	$(Q)$(RM) $(patsubst $(srcdir)/%,%,$(EXT_SRCS))
 
@@ -444,7 +496,7 @@ endif
 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))
+	$(eval GIT_DIR := $(shell $(GIT_IN_SRC) 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)
@@ -458,22 +510,115 @@ update-deps:
 	$(GIT) --git-dir=$(GIT_DIR) merge --no-edit --ff-only $(update_deps)
 	$(GIT) --git-dir=$(GIT_DIR) branch --delete $(update_deps)
 
+fix-depends check-depends: all hello
+	$(BASERUBY) -C $(srcdir) tool/update-deps $(if $(filter fix-%,$@),--fix)
+
 # order-only-prerequisites doesn't work for $(RUBYSPEC_CAPIEXT)
 # because the same named directory exists in the source tree.
-$(RUBYSPEC_CAPIEXT)/%.$(DLEXT): $(srcdir)/$(RUBYSPEC_CAPIEXT)/%.c $(srcdir)/$(RUBYSPEC_CAPIEXT)/rubyspec.h $(RUBY_H_INCLUDES) $(LIBRUBY)
-	$(ECHO) building $@
+$(RUBYSPEC_CAPIEXT)/%.$(DLEXT): $(srcdir)/$(RUBYSPEC_CAPIEXT)/%.c $(RUBYSPEC_CAPIEXT_DEPS) \
+	| build-ext
+	$(no_silence:no=$(ECHO) building $@)
 	$(Q) $(MAKEDIRS) $(@D)
-	$(Q) $(DLDSHARED) $(XDLDFLAGS) $(XLDFLAGS) $(LDFLAGS) $(INCFLAGS) $(CPPFLAGS) $(OUTFLAG)$@ $< $(LIBRUBYARG)
+	$(Q) $(DLDSHARED) -L. $(XDLDFLAGS) $(XLDFLAGS) $(LDFLAGS) $(INCFLAGS) $(CPPFLAGS) $(OUTFLAG)$@ $< $(LIBRUBYARG)
+ifneq ($(POSTLINK),)
+	$(Q) $(POSTLINK)
+endif
 	$(Q) $(RMALL) $@.*
 
-rubyspec-capiext: $(patsubst %.c,$(RUBYSPEC_CAPIEXT)/%.$(DLEXT),$(notdir $(wildcard $(srcdir)/$(RUBYSPEC_CAPIEXT)/*.c)))
+RUBYSPEC_CAPIEXT_SO := $(patsubst %.c,$(RUBYSPEC_CAPIEXT)/%.$(DLEXT),$(notdir $(wildcard $(srcdir)/$(RUBYSPEC_CAPIEXT)/*.c)))
+rubyspec-capiext: $(RUBYSPEC_CAPIEXT_SO)
 	@ $(NULLCMD)
 
-ifeq ($(ENABLE_SHARED),yes)
-exts: rubyspec-capiext
-endif
-
-spec/%/ spec/%_spec.rb: programs exts PHONY
+spec/%/ spec/%_spec.rb: programs exts $(RUBYSPEC_CAPIEXT_BUILD) PHONY
 	+$(RUNRUBY) -r./$(arch)-fake $(srcdir)/spec/mspec/bin/mspec-run -B $(srcdir)/spec/default.mspec $(SPECOPTS) $(patsubst %,$(srcdir)/%,$@)
 
 ruby.pc: $(filter-out ruby.pc,$(ruby_pc))
+
+# `make matz`: bump up the MINOR;
+#    Copying NEWS.md to doc/NEWS/, and empty the details in NEWS.md.
+#
+# `make matz NEW=x.y`: bump up to x.y.0;
+#    Just update the version in the title of NEWS.md.
+
+matz: up
+matz-commit: OLD := $(MAJOR).$(MINOR).0
+ifdef NEW
+matz-commit: MAJOR := $(word 1,$(subst ., ,$(NEW)))
+matz-commit: MINOR := $(word 2,$(subst ., ,$(NEW)))
+matz-commit: $(DOT_WAIT) bump_news
+bump_news$(DOT_WAIT): up
+bump_headers$(DOT_WAIT): bump_news
+else
+matz-commit: MINOR := $(shell expr $(MINOR) + 1)
+matz-commit: $(DOT_WAIT) reset_news
+flush_news$(DOT_WAIT): up
+bump_headers$(DOT_WAIT): reset_news
+endif
+
+matz: $(DOT_WAIT) matz-commit
+matz-commit: bump_headers
+matz-commit: override NEW := $(MAJOR).$(MINOR).0
+matz-commit: files := include/ruby/version.h include/ruby/internal/abi.h
+matz-commit: message := Development of $(NEW) started.
+
+flush_news:
+	$(GIT_IN_SRC) mv -f NEWS.md doc/NEWS/NEWS-$(OLD).md
+	$(GIT_IN_SRC) commit -m "[DOC] Flush NEWS.md"
+
+.PHONY: flush_news reset_news bump_news bump_headers
+
+bump_headers:
+	sed -i~ \
+	-e "s/^\(#define RUBY_API_VERSION_MAJOR\) .*/\1 $(MAJOR)/" \
+	-e "s/^\(#define RUBY_API_VERSION_MINOR\) .*/\1 $(MINOR)/" \
+	-e "s/^\(#define RUBY_ABI_VERSION\) .*/\1 0/" \
+	 $(files:%=$(srcdir)/%)
+
+reset_news: flush_news
+	$(BASERUBY) -C $(srcdir) -p -00 \
+	-e 'BEGIN {old, new = ARGV.shift(2); STDOUT.reopen(ARGV.shift)}' \
+	-e 'case $$.' \
+	-e 'when 1; $$_.sub!(/Ruby \K[0-9.]+/, new)' \
+	-e 'when 2; $$_.sub!(/\*\*\K[0-9.]+(?=\*\*)/, old)' \
+	-e 'end' \
+	-e 'next if /^[\[ *]/ =~ $$_' \
+	-e '$$_.sub!(/\n{2,}\z/, "\n\n")' \
+	$(OLD) $(NEW) NEWS.md doc/NEWS/NEWS-$(OLD).md
+
+bump_news:
+	$(BASERUBY) -C $(srcdir) -p -i \
+	-e 'BEGIN {new = ARGV.shift; print gets("").sub(/Ruby \K[0-9.]+/, new)}' \
+	$(NEW) NEWS.md
+
+matz: matz-commit matz-push
+
+matz-commit:
+	$(GIT_IN_SRC) add NEWS.md $(files)
+	$(GIT_IN_SRC) commit -m "$(message)"
+
+GIT_REMOTE_ORIGIN = origin
+
+matz-push: matz-commit
+	$(eval origin_url := $(shell $(GIT_IN_SRC) remote get-url $(GIT_REMOTE_ORIGIN)))
+	$(if $(origin_url),,@false)
+	$(eval last_commit := $(shell $(GIT_IN_SRC) log -n1 --format=%H --author=matz HEAD~..HEAD))
+	$(if $(last_commit),,$(ECHO) No matz commits 1>&2; false)
+	$(if $(filter 12-25 12-26,$(shell date +%m-%d)),,$(ECHO) Not the release date 1>&2; false)
+	$(ECHO) $$'\e[31m'Pushing to $$'\e[7m'$(GIT_REMOTE_ORIGIN)$$'\e[27m'" ($(origin_url))"$$'\e[m'
+	$(GIT_IN_SRC) push $(GIT_REMOTE_ORIGIN)
+
+tags:
+	$(MAKE) GIT="$(GIT)" -C "$(srcdir)" -f defs/tags.mk
+
+
+# ripper_srcs makes all sources at once. invoking this target multiple
+# times in parallel means all sources will be built for the number of
+# sources times respectively.
+ifneq ($(DOT_WAIT),)
+.NOTPARALLEL: ripper_srcs
+else
+ripper_src =
+$(foreach r,$(RIPPER_SRCS),$(eval $(value r): | $(value ripper_src))\
+	$(eval ripper_src := $(value r)))
+ripper_srcs: $(ripper_src)
+endif
diff --git a/defs/id.def b/defs/id.def
index 94af02b12f..cd3a8480a2 100644
--- a/defs/id.def
+++ b/defs/id.def
@@ -2,11 +2,13 @@
 firstline, predefined = __LINE__+1, %[\
   max
   min
+  hash
   freeze
   nil?
   inspect
   intern
   object_id
+  __id__
   const_added
   const_missing
   method_missing                                        MethodMissing
@@ -25,7 +27,6 @@ firstline, predefined = __LINE__+1, %[\
   lambda
   send
   __send__
-  __attached__
   __recursive_key__
   initialize
   initialize_copy
@@ -58,6 +59,12 @@ firstline, predefined = __LINE__+1, %[\
   quo
   name
   nil
+  path
+  pack
+  buffer
+  include?
+  aborted
+  exited
 
   _                                                     UScore
 
@@ -71,10 +78,13 @@ firstline, predefined = __LINE__+1, %[\
   _7  NUMPARAM_7
   _8  NUMPARAM_8
   _9  NUMPARAM_9
+  <it>  ItImplicit
+  it    It
 
   "/*NULL*/"                                            NULL
   empty?
   eql?
+  default
   respond_to?                                           Respond_to
   respond_to_missing?                                   Respond_to_missing
   <IFUNC>
@@ -95,6 +105,8 @@ firstline, predefined = __LINE__+1, %[\
   $_                                                    LASTLINE
   $~                                                    BACKREF
   $!                                                    ERROR_INFO
+
+  Ruby
 ]
 
 # VM ID         OP      Parser Token
diff --git a/defs/jit.mk b/defs/jit.mk
new file mode 100644
index 0000000000..27b14e7a07
--- /dev/null
+++ b/defs/jit.mk
@@ -0,0 +1,96 @@
+# Make recipes that deal with the rust code of YJIT and ZJIT.
+#
+# $(gnumake_recursive) adds the '+' prefix to pass down GNU make's
+# jobserver resources to cargo/rustc as rust-lang.org recommends.
+# Without it, certain make version trigger a warning. It does not
+# add the prefix when `make --dry-run` so dry runs are indeed dry.
+
+ifneq ($(JIT_CARGO_SUPPORT),no)
+
+# Show Cargo progress when doing `make V=1`
+CARGO_VERBOSE_0 = -q
+CARGO_VERBOSE_1 =
+CARGO_VERBOSE = $(CARGO_VERBOSE_$(V))
+
+# Because of Cargo cache, if the actual binary is not changed from the
+# previous build, the mtime is preserved as the cached file.
+# This means the target is not updated actually, and it will need to
+# rebuild at the next build.
+RUST_LIB_TOUCH = touch $@
+
+# NOTE: MACOSX_DEPLOYMENT_TARGET to match `rustc --print deployment-target` to avoid the warning below.
+#    ld: warning: object file (target/debug/libjit.a(<libcapstone object>)) was built for
+#    newer macOS version (15.2) than being linked (15.0)
+# This limits us to an older set of macOS API in the rust code, but we don't use any.
+$(RUST_LIB): $(srcdir)/ruby.rs
+	$(Q)if [ '$(ZJIT_SUPPORT)' != no -a '$(YJIT_SUPPORT)' != no ]; then \
+	    echo 'building YJIT and ZJIT ($(JIT_CARGO_SUPPORT:yes=release) mode)'; \
+	elif [ '$(ZJIT_SUPPORT)' != no ]; then \
+	    echo 'building ZJIT ($(JIT_CARGO_SUPPORT) mode)'; \
+	elif [ '$(YJIT_SUPPORT)' != no ]; then \
+	    echo 'building YJIT ($(JIT_CARGO_SUPPORT) mode)'; \
+	fi
+	$(gnumake_recursive)$(Q)CARGO_TARGET_DIR='$(CARGO_TARGET_DIR)' \
+	    CARGO_TERM_PROGRESS_WHEN='never' \
+	    MACOSX_DEPLOYMENT_TARGET=11.0 \
+	    $(CARGO) $(CARGO_VERBOSE) build --manifest-path '$(top_srcdir)/Cargo.toml' $(CARGO_BUILD_ARGS)
+	$(RUST_LIB_TOUCH)
+else ifneq ($(strip $(RLIB_DIR)),) # combo build
+
+$(RUST_LIB): $(srcdir)/ruby.rs
+	$(ECHO) 'building $(@F)'
+	$(gnumake_recursive)$(Q) $(RUSTC) --edition=2024 \
+	    $(RUSTC_FLAGS) \
+	    '-L$(@D)' \
+	    --extern=yjit \
+	    --extern=zjit \
+	    --crate-type=staticlib \
+	    --cfg 'feature="yjit"' \
+	    --cfg 'feature="zjit"' \
+	    '--out-dir=$(@D)' \
+	    '$(top_srcdir)/ruby.rs'
+
+# Absolute path to avoid VPATH ambiguity
+JIT_RLIB = $(TOP_BUILD_DIR)/$(RLIB_DIR)/libjit.rlib
+$(YJIT_RLIB): $(JIT_RLIB)
+$(ZJIT_RLIB): $(JIT_RLIB)
+$(JIT_RLIB):
+	$(ECHO) 'building $(@F)'
+	$(gnumake_recursive)$(Q) $(RUSTC) --crate-name=jit \
+	    --edition=2024 \
+	    $(JIT_RUST_FLAGS) \
+	    $(RUSTC_FLAGS) \
+	    '--out-dir=$(@D)' \
+	    '$(top_srcdir)/jit/src/lib.rs'
+endif # ifneq ($(JIT_CARGO_SUPPORT),no)
+
+RUST_LIB_SYMBOLS = $(RUST_LIB:.a=).symbols
+$(RUST_LIBOBJ): $(RUST_LIB)
+	$(ECHO) 'partial linking $(RUST_LIB) into $@'
+ifneq ($(findstring darwin,$(target_os)),)
+	$(Q) $(CC) -nodefaultlibs -r -o $@ -exported_symbols_list $(RUST_LIB_SYMBOLS) $(RUST_LIB)
+else
+	$(Q) $(LD) -r -o $@ --whole-archive $(RUST_LIB)
+	-$(Q) $(OBJCOPY) --wildcard --keep-global-symbol='$(SYMBOL_PREFIX)rb_*' $(@)
+endif
+
+rust-libobj: $(RUST_LIBOBJ)
+rust-lib: $(RUST_LIB)
+
+# For Darwin only: a list of symbols that we want the glommed Rust static lib to export.
+# Unfortunately, using wildcard like '_rb_*' with -exported-symbol does not work, at least
+# not on version 820.1. Assume llvm-nm, so XCode 8.0 (from 2016) or newer.
+#
+# The -exported_symbols_list pulls out the right archive members. Symbols not listed
+# in the list are made private extern, which are in turn made local as we're using `ld -r`.
+# Note, section about -keep_private_externs in ld's man page hints at this behavior on which
+# we rely.
+ifneq ($(findstring darwin,$(target_os)),)
+$(RUST_LIB_SYMBOLS): $(RUST_LIB)
+	$(Q) $(tooldir)/darwin-ar $(NM) --defined-only --extern-only $(RUST_LIB) | \
+	sed -n -e 's/.* //' -e '/^$(SYMBOL_PREFIX)rb_/p' \
+	-e '/^$(SYMBOL_PREFIX)rust_eh_personality/p' \
+	> $@
+
+$(RUST_LIBOBJ): $(RUST_LIB_SYMBOLS)
+endif
diff --git a/defs/known_errors.def b/defs/known_errors.def
index e9694cfbda..23e9e53507 100644
--- a/defs/known_errors.def
+++ b/defs/known_errors.def
@@ -1,157 +1,157 @@
-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
+E2BIG           Argument list too long
+EACCES          Permission denied
+EADDRINUSE      Address already in use
+EADDRNOTAVAIL   Address not available
+EADV            Advertise error
+EAFNOSUPPORT    Address family not supported
+EAGAIN          Resource temporarily unavailable, try again (may be the same value as EWOULDBLOCK)
+EALREADY        Connection already in progress
+EAUTH           Authentication error
+EBADARCH        Bad CPU type in executable
+EBADE           Bad exchange
+EBADEXEC        Bad executable
+EBADF           Bad file descriptor
+EBADFD          File descriptor in bad state
+EBADMACHO       Malformed Macho file
+EBADMSG         Bad message
+EBADR           Invalid request descriptor
+EBADRPC         RPC struct is bad
+EBADRQC         Invalid request code
+EBADSLT         Invalid slot
+EBFONT          Bad font file format
+EBUSY           Device or resource busy
+ECANCELED       Operation canceled
+ECAPMODE        Not permitted in capability mode
+ECHILD          No child processes
+ECHRNG          Channel number out of range
+ECOMM           Communication error on send
+ECONNABORTED    Connection aborted
+ECONNREFUSED    Connection refused
+ECONNRESET      Connection reset
+EDEADLK         Resource deadlock avoided
+EDEADLOCK       File locking deadlock error
+EDESTADDRREQ    Destination address required
+EDEVERR         Device error; e.g., printer paper out
+EDOM            Mathematics argument out of domain of function
+EDOOFUS         Improper function use
+EDOTDOT         RFS specific error
+EDQUOT          Disk quota exceeded
+EEXIST          File exists
+EFAULT          Bad address
+EFBIG           File too large
+EFTYPE          Invalid file type or format
+EHOSTDOWN       Host is down
+EHOSTUNREACH    Host is unreachable
+EHWPOISON       Memory page has hardware error
+EIDRM           Identifier removed
+EILSEQ          Invalid or incomplete multibyte or wide character
+EINPROGRESS     Operation in progress
+EINTR           Interrupted function call
+EINVAL          Invalid argument
+EIO             Input/output error
+EIPSEC          IPsec processing failure
+EISCONN         Socket is connected
+EISDIR          Is a directory
+EISNAM          Is a named file type
+EKEYEXPIRED     Key has expired
+EKEYREJECTED    Key was rejected by service
+EKEYREVOKED     Key has been revoked
+EL2HLT          Level 2 halted
+EL2NSYNC        Level 2 not synchronized
+EL3HLT          Level 3 halted
+EL3RST          Level 3 reset
+ELIBACC         Cannot access a needed shared library
+ELIBBAD         Accessing a corrupted shared library
+ELIBEXEC        Cannot exec a shared library directly
+ELIBMAX         Attempting to link in too many shared libraries
+ELIBSCN         .lib section in a.out corrupted
+ELNRNG          Link number out of range
+ELOOP           Too many levels of symbolic links
+EMEDIUMTYPE     Wrong medium type
+EMFILE          Too many open files
+EMLINK          Too many links
+EMSGSIZE        Message too long
+EMULTIHOP       Multihop attempted
+ENAMETOOLONG    Filename too long
+ENAVAIL         No XENIX semaphores available
+ENEEDAUTH       Need authenticator
+ENETDOWN        Network is down
+ENETRESET       Connection aborted by network
+ENETUNREACH     Network unreachable
+ENFILE          Too many open files in system
+ENOANO          No anode
+ENOATTR         Attribute not found
+ENOBUFS         No buffer space available
+ENOCSI          No CSI structure available
+ENODATA         No data available
+ENODEV          No such device
+ENOENT          No such file or directory
+ENOEXEC         Exec format error
+ENOKEY          Required key not available
+ENOLCK          No locks available
+ENOLINK         Link has been severed
+ENOMEDIUM       No medium found
+ENOMEM          Not enough space/cannot allocate memory
+ENOMSG          No message of the desired type
+ENONET          Machine is not on the network
+ENOPKG          Package not installed
+ENOPOLICY       No such policy
+ENOPROTOOPT     Protocol not available
+ENOSPC          No space left on device
+ENOSR           No STREAM resources
+ENOSTR          Not a STREAM
+ENOSYS          Functionality not implemented
+ENOTBLK         Block device required
+ENOTCAPABLE     Capabilities insufficient
+ENOTCONN        The socket is not connected
+ENOTDIR         Not a directory
+ENOTEMPTY       Directory not empty
+ENOTNAM         Not a XENIX named type file
+ENOTRECOVERABLE State not recoverable
+ENOTSOCK        Not a socket
+ENOTSUP         Operation not supported
+ENOTTY          Inappropriate I/O control operation
+ENOTUNIQ        Name not unique on network
+ENXIO           No such device or address
+EOPNOTSUPP      Operation not supported on socket
+EOVERFLOW       Value too large to be stored in data type
+EOWNERDEAD      Owner died
+EPERM           Operation not permitted
+EPFNOSUPPORT    Protocol family not supported
+EPIPE           Broken pipe
+EPROCLIM        Too many processes
+EPROCUNAVAIL    Bad procedure for program
+EPROGMISMATCH   Program version wrong
+EPROGUNAVAIL    RPC program isn't available
+EPROTO          Protocol error
+EPROTONOSUPPORT Protocol not supported
+EPROTOTYPE      Protocol wrong type for socket
+EPWROFF         Device power is off
+EQFULL          Interface output queue is full
+ERANGE          Result too large
+EREMCHG         Remote address changed
+EREMOTE         Object is remote
+EREMOTEIO       Remote I/O error
+ERESTART        Interrupted system call should be restarted
+ERFKILL         Operation not possible due to RF-kill
+EROFS           Read-only file system
+ERPCMISMATCH    RPC version wrong
+ESHLIBVERS      Shared library version mismatch
+ESHUTDOWN       Cannot send after transport endpoint shutdown
+ESOCKTNOSUPPORT Socket type not supported
+ESPIPE          Illegal seek
+ESRCH           No such process
+ESRMNT          Server mount error
+ESTALE          Stale file handle
+ESTRPIPE        Streams pipe error
+ETIME           Timer expired
+ETIMEDOUT       Connection timed out
+ETOOMANYREFS    Too many references: cannot splice
+ETXTBSY         Text file busy
+EUCLEAN         Structure needs cleaning
+EUNATCH         Protocol driver not attached
+EUSERS          Too many users
+EWOULDBLOCK     Operation would block
+EXDEV           Invalid cross-device link
+EXFULL          Exchange full
+ELAST           Largest errno value
diff --git a/defs/tags.mk b/defs/tags.mk
new file mode 100644
index 0000000000..d29260c294
--- /dev/null
+++ b/defs/tags.mk
@@ -0,0 +1,18 @@
+# -*- mode: makefile-gmake; indent-tabs-mode: t -*-
+
+SRCS := $(shell $(GIT) ls-files \
+	*.[chy] *.def *.inc *.rb \
+	ccan/ coroutine/ include/ internal/ missing/ \
+	'enc/**/*.[ch]' 'win32/**/*.[ch]' \
+	)
+
+TAGS: $(SRCS)
+	@echo updating $@
+	@tmp=$$(mktemp); \
+	trap 'rm -f "$$tmp"' 0; \
+	{ \
+	  $(GIT) grep -h --no-line-number -o '^ *# *define  *RBIMPL_ATTR_[A-Z_]*(*' -- include | \
+	    sed 's/^ *# *define *//;/_H$$/d;y/(/+/' | sort -u && \
+	  echo 'NORETURN+'; \
+	} > "$$tmp" && \
+	ctags -e -I@"$$tmp" -h .def.inc --langmap=c:+.y.def.inc $(^)
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,$(ARCH_FLAG))
-endif
diff --git a/depend b/depend
new file mode 100644
index 0000000000..7372902666
--- /dev/null
+++ b/depend
@@ -0,0 +1,20573 @@
+# AUTOGENERATED DEPENDENCIES START
+addr2line.$(OBJEXT): {$(VPATH)}addr2line.c
+addr2line.$(OBJEXT): {$(VPATH)}addr2line.h
+addr2line.$(OBJEXT): {$(VPATH)}assert.h
+addr2line.$(OBJEXT): {$(VPATH)}backward/2/assume.h
+addr2line.$(OBJEXT): {$(VPATH)}backward/2/attributes.h
+addr2line.$(OBJEXT): {$(VPATH)}backward/2/bool.h
+addr2line.$(OBJEXT): {$(VPATH)}backward/2/long_long.h
+addr2line.$(OBJEXT): {$(VPATH)}backward/2/stdalign.h
+addr2line.$(OBJEXT): {$(VPATH)}backward/2/stdarg.h
+addr2line.$(OBJEXT): {$(VPATH)}config.h
+addr2line.$(OBJEXT): {$(VPATH)}defines.h
+addr2line.$(OBJEXT): {$(VPATH)}internal/assume.h
+addr2line.$(OBJEXT): {$(VPATH)}internal/attr/alloc_size.h
+addr2line.$(OBJEXT): {$(VPATH)}internal/attr/cold.h
+addr2line.$(OBJEXT): {$(VPATH)}internal/attr/const.h
+addr2line.$(OBJEXT): {$(VPATH)}internal/attr/deprecated.h
+addr2line.$(OBJEXT): {$(VPATH)}internal/attr/error.h
+addr2line.$(OBJEXT): {$(VPATH)}internal/attr/forceinline.h
+addr2line.$(OBJEXT): {$(VPATH)}internal/attr/format.h
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+zjit.$(OBJEXT): {$(VPATH)}internal/gc.h
+zjit.$(OBJEXT): {$(VPATH)}internal/glob.h
+zjit.$(OBJEXT): {$(VPATH)}internal/globals.h
+zjit.$(OBJEXT): {$(VPATH)}internal/has/attribute.h
+zjit.$(OBJEXT): {$(VPATH)}internal/has/builtin.h
+zjit.$(OBJEXT): {$(VPATH)}internal/has/c_attribute.h
+zjit.$(OBJEXT): {$(VPATH)}internal/has/cpp_attribute.h
+zjit.$(OBJEXT): {$(VPATH)}internal/has/declspec_attribute.h
+zjit.$(OBJEXT): {$(VPATH)}internal/has/extension.h
+zjit.$(OBJEXT): {$(VPATH)}internal/has/feature.h
+zjit.$(OBJEXT): {$(VPATH)}internal/has/warning.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/array.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/bignum.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/class.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/compar.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/complex.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/cont.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/dir.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/enum.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/enumerator.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/error.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/eval.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/file.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/hash.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/io.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/load.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/marshal.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/numeric.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/object.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/parse.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/proc.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/process.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/random.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/range.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/rational.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/re.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/ruby.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/select.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/select/largesize.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/set.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/signal.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/sprintf.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/string.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/struct.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/thread.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/time.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/variable.h
+zjit.$(OBJEXT): {$(VPATH)}internal/intern/vm.h
+zjit.$(OBJEXT): {$(VPATH)}internal/interpreter.h
+zjit.$(OBJEXT): {$(VPATH)}internal/iterator.h
+zjit.$(OBJEXT): {$(VPATH)}internal/memory.h
+zjit.$(OBJEXT): {$(VPATH)}internal/method.h
+zjit.$(OBJEXT): {$(VPATH)}internal/module.h
+zjit.$(OBJEXT): {$(VPATH)}internal/newobj.h
+zjit.$(OBJEXT): {$(VPATH)}internal/numeric.h
+zjit.$(OBJEXT): {$(VPATH)}internal/scan_args.h
+zjit.$(OBJEXT): {$(VPATH)}internal/special_consts.h
+zjit.$(OBJEXT): {$(VPATH)}internal/static_assert.h
+zjit.$(OBJEXT): {$(VPATH)}internal/stdalign.h
+zjit.$(OBJEXT): {$(VPATH)}internal/stdbool.h
+zjit.$(OBJEXT): {$(VPATH)}internal/stdckdint.h
+zjit.$(OBJEXT): {$(VPATH)}internal/symbol.h
+zjit.$(OBJEXT): {$(VPATH)}internal/value.h
+zjit.$(OBJEXT): {$(VPATH)}internal/value_type.h
+zjit.$(OBJEXT): {$(VPATH)}internal/variable.h
+zjit.$(OBJEXT): {$(VPATH)}internal/warning_push.h
+zjit.$(OBJEXT): {$(VPATH)}internal/xmalloc.h
+zjit.$(OBJEXT): {$(VPATH)}iseq.h
+zjit.$(OBJEXT): {$(VPATH)}method.h
+zjit.$(OBJEXT): {$(VPATH)}missing.h
+zjit.$(OBJEXT): {$(VPATH)}node.h
+zjit.$(OBJEXT): {$(VPATH)}onigmo.h
+zjit.$(OBJEXT): {$(VPATH)}oniguruma.h
+zjit.$(OBJEXT): {$(VPATH)}prism_compile.h
+zjit.$(OBJEXT): {$(VPATH)}probes.dmyh
+zjit.$(OBJEXT): {$(VPATH)}probes.h
+zjit.$(OBJEXT): {$(VPATH)}probes_helper.h
+zjit.$(OBJEXT): {$(VPATH)}ruby_assert.h
+zjit.$(OBJEXT): {$(VPATH)}ruby_atomic.h
+zjit.$(OBJEXT): {$(VPATH)}rubyparser.h
+zjit.$(OBJEXT): {$(VPATH)}shape.h
+zjit.$(OBJEXT): {$(VPATH)}st.h
+zjit.$(OBJEXT): {$(VPATH)}subst.h
+zjit.$(OBJEXT): {$(VPATH)}thread_$(THREAD_MODEL).h
+zjit.$(OBJEXT): {$(VPATH)}thread_native.h
+zjit.$(OBJEXT): {$(VPATH)}vm_callinfo.h
+zjit.$(OBJEXT): {$(VPATH)}vm_core.h
+zjit.$(OBJEXT): {$(VPATH)}vm_debug.h
+zjit.$(OBJEXT): {$(VPATH)}vm_insnhelper.h
+zjit.$(OBJEXT): {$(VPATH)}vm_opts.h
+zjit.$(OBJEXT): {$(VPATH)}vm_sync.h
+zjit.$(OBJEXT): {$(VPATH)}yjit.h
+zjit.$(OBJEXT): {$(VPATH)}zjit.c
+zjit.$(OBJEXT): {$(VPATH)}zjit.h
+zjit.$(OBJEXT): {$(VPATH)}zjit.rbinc
+# AUTOGENERATED DEPENDENCIES END
diff --git a/dir.c b/dir.c
index a35aace6f1..25ed59c668 100644
--- a/dir.c
+++ b/dir.c
@@ -22,10 +22,6 @@
 #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)
@@ -35,8 +31,12 @@
 # endif
 #endif
 
-#if USE_OPENDIR_AT
-# include <fcntl.h>
+#ifdef HAVE_FCNTL_H
+#  include <fcntl.h>
+#endif
+
+#ifndef O_CLOEXEC
+#  define O_CLOEXEC 0
 #endif
 
 #undef HAVE_DIRENT_NAMLEN
@@ -113,6 +113,7 @@ char *strchr(char*,char);
 #include "internal/gc.h"
 #include "internal/io.h"
 #include "internal/object.h"
+#include "internal/imemo.h"
 #include "internal/vm.h"
 #include "ruby/encoding.h"
 #include "ruby/ruby.h"
@@ -142,6 +143,50 @@ char *strchr(char*,char);
 # define IS_WIN32 0
 #endif
 
+#ifdef HAVE_GETATTRLIST
+struct getattrlist_args {
+    const char *path;
+    int fd;
+    struct attrlist *list;
+    void *buf;
+    size_t size;
+    unsigned int options;
+};
+
+# define GETATTRLIST_ARGS(list_, buf_, options_) (struct getattrlist_args) \
+    {.list = list_, .buf = buf_, .size = sizeof(buf_), .options = options_}
+
+static void *
+nogvl_getattrlist(void *args)
+{
+    struct getattrlist_args *arg = args;
+    return (void *)(VALUE)getattrlist(arg->path, arg->list, arg->buf, arg->size, arg->options);
+}
+
+static int
+gvl_getattrlist(struct getattrlist_args *args, const char *path)
+{
+    args->path = path;
+    return IO_WITHOUT_GVL_INT(nogvl_getattrlist, args);
+}
+
+# ifdef HAVE_FGETATTRLIST
+static void *
+nogvl_fgetattrlist(void *args)
+{
+    struct getattrlist_args *arg = args;
+    return (void *)(VALUE)fgetattrlist(arg->fd, arg->list, arg->buf, arg->size, arg->options);
+}
+
+static int
+gvl_fgetattrlist(struct getattrlist_args *args, int fd)
+{
+    args->fd = fd;
+    return IO_WITHOUT_GVL_INT(nogvl_fgetattrlist, args);
+}
+# endif
+#endif
+
 #if NORMALIZE_UTF8PATH
 # if defined HAVE_FGETATTRLIST || !defined HAVE_GETATTRLIST
 #   define need_normalization(dirp, path) need_normalization(dirp)
@@ -154,10 +199,11 @@ 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,};
+    struct getattrlist_args args = GETATTRLIST_ARGS(&al, attrbuf, 0);
 #   if defined HAVE_FGETATTRLIST
-    int ret = fgetattrlist(dirfd(dirp), &al, attrbuf, sizeof(attrbuf), 0);
+    int ret = gvl_fgetattrlist(&args, dirfd(dirp));
 #   else
-    int ret = getattrlist(path, &al, attrbuf, sizeof(attrbuf), 0);
+    int ret = gvl_getattrlist(&args, path);
 #   endif
     if (!ret) {
         const fsobj_tag_t *tag = (void *)(attrbuf+1);
@@ -466,31 +512,26 @@ struct dir_data {
 };
 
 static void
-dir_mark(void *ptr)
-{
-    struct dir_data *dir = ptr;
-    rb_gc_mark(dir->path);
-}
-
-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)
-{
-    return sizeof(struct dir_data);
-}
+RUBY_REFERENCES(dir_refs) = {
+    RUBY_REF_EDGE(struct dir_data, path),
+    RUBY_REF_END
+};
 
 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
+    {
+        RUBY_REFS_LIST_PTR(dir_refs),
+        dir_free,
+        NULL, // Nothing allocated externally, so don't need a memsize function
+    },
+    0, NULL, RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_DECL_MARKING | RUBY_TYPED_EMBEDDABLE
 };
 
 static VALUE dir_close(VALUE);
@@ -513,7 +554,7 @@ nogvl_opendir(void *ptr)
 {
     const char *path = ptr;
 
-    return (void *)opendir(path);
+    return opendir(path);
 }
 
 static DIR *
@@ -524,12 +565,31 @@ opendir_without_gvl(const char *path)
 
         u.in = path;
 
-        return rb_thread_call_without_gvl(nogvl_opendir, u.out, RUBY_UBF_IO, 0);
+        return IO_WITHOUT_GVL(nogvl_opendir, u.out);
     }
     else
         return opendir(path);
 }
 
+static void
+close_dir_data(struct dir_data *dp)
+{
+    if (dp->dir) {
+        if (closedir(dp->dir) < 0) {
+            dp->dir = NULL;
+            rb_sys_fail("closedir");
+        }
+        dp->dir = NULL;
+    }
+}
+
+static void
+check_closedir(DIR *dirp)
+{
+    if (closedir(dirp) < 0)
+        rb_sys_fail("closedir");
+}
+
 static VALUE
 dir_initialize(rb_execution_context_t *ec, VALUE dir, VALUE dirname, VALUE enc)
 {
@@ -544,8 +604,7 @@ dir_initialize(rb_execution_context_t *ec, VALUE dir, VALUE dirname, VALUE enc)
     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;
+    close_dir_data(dp);
     RB_OBJ_WRITE(dir, &dp->path, Qnil);
     dp->enc = fsenc;
     path = RSTRING_PTR(dirname);
@@ -559,7 +618,8 @@ dir_initialize(rb_execution_context_t *ec, VALUE dir, VALUE dirname, VALUE enc)
         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) {
+            struct getattrlist_args args = GETATTRLIST_ARGS(&al, attrbuf, FSOPT_NOFOLLOW);
+            if (gvl_getattrlist(&args, path) == 0) {
                 dp->dir = opendir_without_gvl(path);
             }
         }
@@ -591,6 +651,51 @@ dir_s_close(rb_execution_context_t *ec, VALUE klass, VALUE dir)
     return dir_close(dir);
 }
 
+# if defined(HAVE_FDOPENDIR) && defined(HAVE_DIRFD)
+static void *
+nogvl_fdopendir(void *fd)
+{
+    return fdopendir((int)(VALUE)fd);
+}
+
+/*
+ * call-seq:
+ *   Dir.for_fd(fd) -> dir
+ *
+ * Returns a new \Dir object representing the directory specified by the given
+ * integer directory file descriptor +fd+:
+ *
+ *   d0 = Dir.new('..')
+ *   d1 = Dir.for_fd(d0.fileno)
+ *
+ * Note that the returned +d1+ does not have an associated path:
+ *
+ *   d0.path # => '..'
+ *   d1.path # => nil
+ *
+ * This method uses the
+ * {fdopendir()}[https://www.man7.org/linux/man-pages/man3/fdopendir.3p.html]
+ * function defined by POSIX 2008;
+ * the method is not implemented on non-POSIX platforms (raises NotImplementedError).
+ */
+static VALUE
+dir_s_for_fd(VALUE klass, VALUE fd)
+{
+    struct dir_data *dp;
+    VALUE dir = TypedData_Make_Struct(klass, struct dir_data, &dir_data_type, dp);
+
+    if (!(dp->dir = IO_WITHOUT_GVL(nogvl_fdopendir, (void *)(VALUE)NUM2INT(fd)))) {
+        rb_sys_fail("fdopendir");
+        UNREACHABLE_RETURN(Qnil);
+    }
+
+    RB_OBJ_WRITE(dir, &dp->path, Qnil);
+    return dir;
+}
+#else
+#define dir_s_for_fd rb_f_notimplement
+#endif
+
 NORETURN(static void dir_closed(void));
 
 static void
@@ -618,10 +723,13 @@ dir_check(VALUE dir)
 
 
 /*
- *  call-seq:
- *     dir.inspect -> string
+ * call-seq:
+ *   inspect -> string
+ *
+ * Returns a string description of +self+:
+ *
+ *   Dir.new('example').inspect # => "#<Dir:example>"
  *
- *  Return a string describing this Dir object.
  */
 static VALUE
 dir_inspect(VALUE dir)
@@ -655,18 +763,18 @@ dir_inspect(VALUE dir)
 
 #ifdef HAVE_DIRFD
 /*
- *  call-seq:
- *     dir.fileno -> integer
- *
- *  Returns the file descriptor used in <em>dir</em>.
+ * call-seq:
+ *   fileno -> integer
  *
- *     d = Dir.new("..")
- *     d.fileno   #=> 8
+ * Returns the file descriptor used in <em>dir</em>.
  *
- *  This method uses dirfd() function defined by POSIX 2008.
- *  NotImplementedError is raised on other platforms, such as Windows,
- *  which doesn't provide the function.
+ *   d = Dir.new('..')
+ *   d.fileno # => 8
  *
+ * This method uses the
+ * {dirfd()}[https://www.man7.org/linux/man-pages/man3/dirfd.3.html]
+ * function defined by POSIX 2008;
+ * the method is not implemented on non-POSIX platforms (raises NotImplementedError).
  */
 static VALUE
 dir_fileno(VALUE dir)
@@ -685,14 +793,14 @@ dir_fileno(VALUE dir)
 #endif
 
 /*
- *  call-seq:
- *     dir.path -> string or nil
- *     dir.to_path -> string or nil
+ * call-seq:
+ *   path -> string or nil
+ *
+ * Returns the +dirpath+ string that was used to create +self+
+ * (or +nil+ if created by method Dir.for_fd):
  *
- *  Returns the path parameter passed to <em>dir</em>'s constructor.
+ *   Dir.new('example').path # => "example"
  *
- *     d = Dir.new("..")
- *     d.path   #=> ".."
  */
 static VALUE
 dir_path(VALUE dir)
@@ -718,8 +826,28 @@ fundamental_encoding_p(rb_encoding *enc)
     }
 }
 # define READDIR(dir, enc) rb_w32_readdir((dir), (enc))
+# define READDIR_NOGVL READDIR
 #else
-# define READDIR(dir, enc) readdir((dir))
+NORETURN(static void *sys_failure(void *function));
+static void *
+sys_failure(void *function)
+{
+    rb_sys_fail(function);
+}
+
+static void *
+nogvl_readdir(void *dir)
+{
+    rb_errno_set(0);
+    if ((dir = readdir(dir)) == NULL) {
+        if (rb_errno())
+            rb_thread_call_with_gvl(sys_failure, (void *)"readdir");
+    }
+    return dir;
+}
+
+# define READDIR(dir, enc) IO_WITHOUT_GVL(nogvl_readdir, (void *)(dir))
+# define READDIR_NOGVL(dir, enc) nogvl_readdir((dir))
 #endif
 
 /* safe to use without GVL */
@@ -746,16 +874,18 @@ to_be_skipped(const struct dirent *dp)
 }
 
 /*
- *  call-seq:
- *     dir.read -> string or nil
+ * call-seq:
+ *   read -> string or nil
+ *
+ * Reads and returns the next entry name from +self+;
+ * returns +nil+ if at end-of-stream;
+ * see {Dir As Stream-Like}[rdoc-ref:Dir@Dir+As+Stream-Like]:
  *
- *  Reads the next entry from <em>dir</em> and returns it as a string.
- *  Returns <code>nil</code> at the end of the stream.
+ *   dir = Dir.new('example')
+ *   dir.read # => "."
+ *   dir.read # => ".."
+ *   dir.read # => "config.h"
  *
- *     d = Dir.new("testdir")
- *     d.read   #=> "."
- *     d.read   #=> ".."
- *     d.read   #=> "config.h"
  */
 static VALUE
 dir_read(VALUE dir)
@@ -764,7 +894,7 @@ dir_read(VALUE dir)
     struct dirent *dp;
 
     GetDIR(dir, dirp);
-    errno = 0;
+    rb_errno_set(0);
     if ((dp = READDIR(dirp->dir, dirp->enc)) != NULL) {
         return rb_external_str_new_with_enc(dp->d_name, NAMLEN(dp), dirp->enc);
     }
@@ -784,24 +914,23 @@ dir_yield(VALUE arg, VALUE path)
 }
 
 /*
- *  call-seq:
- *     dir.each { |filename| block }  -> dir
- *     dir.each                       -> an_enumerator
+ * call-seq:
+ *   each {|entry_name| ... } -> self
  *
- *  Calls the block once for each entry in this directory, passing the
- *  filename of each entry as a parameter to the block.
+ * Calls the block with each entry name in +self+:
  *
- *  If no block is given, an enumerator is returned instead.
+ *   Dir.new('example').each {|entry_name| p entry_name }
  *
- *     d = Dir.new("testdir")
- *     d.each  {|x| puts "Got #{x}" }
+ * Output:
+
+ *   "."
+ *   ".."
+ *   "config.h"
+ *   "lib"
+ *   "main.rb"
  *
- *  <em>produces:</em>
+ * With no block given, returns an Enumerator.
  *
- *     Got .
- *     Got ..
- *     Got config.h
- *     Got main.rb
  */
 static VALUE
 dir_each(VALUE dir)
@@ -844,16 +973,17 @@ dir_each_entry(VALUE dir, VALUE (*each)(VALUE, VALUE), VALUE arg, int children_o
 
 #ifdef HAVE_TELLDIR
 /*
- *  call-seq:
- *     dir.pos -> integer
- *     dir.tell -> integer
+ * call-seq:
+ *   tell -> integer
+ *
+ * Returns the current position of +self+;
+ * see {Dir As Stream-Like}[rdoc-ref:Dir@Dir+As+Stream-Like]:
  *
- *  Returns the current position in <em>dir</em>. See also Dir#seek.
+ *   dir = Dir.new('example')
+ *   dir.tell  # => 0
+ *   dir.read  # => "."
+ *   dir.tell  # => 1
  *
- *     d = Dir.new("testdir")
- *     d.tell   #=> 0
- *     d.read   #=> "."
- *     d.tell   #=> 12
  */
 static VALUE
 dir_tell(VALUE dir)
@@ -862,7 +992,8 @@ dir_tell(VALUE dir)
     long pos;
 
     GetDIR(dir, dirp);
-    pos = telldir(dirp->dir);
+    if((pos = telldir(dirp->dir)) < 0)
+        rb_sys_fail("telldir");
     return rb_int2inum(pos);
 }
 #else
@@ -871,18 +1002,24 @@ dir_tell(VALUE dir)
 
 #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                   #=> ".."
+ * call-seq:
+ *   seek(position) -> self
+ *
+ * Sets the position in +self+ and returns +self+.
+ * The value of +position+ should have been returned from an earlier call to #tell;
+ * if not, the return values from subsequent calls to #read are unspecified.
+ *
+ * See {Dir As Stream-Like}[rdoc-ref:Dir@Dir+As+Stream-Like].
+ *
+ * Examples:
+ *
+ *   dir = Dir.new('example')
+ *   dir.pos      # => 0
+ *   dir.seek(3)  # => #<Dir:example>
+ *   dir.pos      # => 3
+ *   dir.seek(30) # => #<Dir:example>
+ *   dir.pos      # => 5
+ *
  */
 static VALUE
 dir_seek(VALUE dir, VALUE pos)
@@ -900,17 +1037,24 @@ dir_seek(VALUE dir, VALUE pos)
 
 #ifdef HAVE_SEEKDIR
 /*
- *  call-seq:
- *     dir.pos = integer  -> integer
+ * call-seq:
+ *   pos = position -> integer
+ *
+ * Sets the position in +self+ and returns +position+.
+ * The value of +position+ should have been returned from an earlier call to #tell;
+ * if not, the return values from subsequent calls to #read are unspecified.
  *
- *  Synonym for Dir#seek, but returns the position parameter.
+ * See {Dir As Stream-Like}[rdoc-ref:Dir@Dir+As+Stream-Like].
+ *
+ * Examples:
+ *
+ *   dir = Dir.new('example')
+ *   dir.pos      # => 0
+ *   dir.pos = 3  # => 3
+ *   dir.pos      # => 3
+ *   dir.pos = 30 # => 30
+ *   dir.pos      # => 5
  *
- *     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)
@@ -923,15 +1067,19 @@ dir_set_pos(VALUE dir, VALUE pos)
 #endif
 
 /*
- *  call-seq:
- *     dir.rewind -> dir
+ * call-seq:
+ *   rewind -> self
+ *
+ * Sets the position in +self+ to zero;
+ * see {Dir As Stream-Like}[rdoc-ref:Dir@Dir+As+Stream-Like]:
  *
- *  Repositions <em>dir</em> to the first entry.
+ *   dir = Dir.new('example')
+ *   dir.read    # => "."
+ *   dir.read    # => ".."
+ *   dir.pos     # => 2
+ *   dir.rewind  # => #<Dir:example>
+ *   dir.pos     # => 0
  *
- *     d = Dir.new("testdir")
- *     d.read     #=> "."
- *     d.rewind   #=> #<Dir:0x401b3fb0>
- *     d.read     #=> "."
  */
 static VALUE
 dir_rewind(VALUE dir)
@@ -944,14 +1092,18 @@ dir_rewind(VALUE dir)
 }
 
 /*
- *  call-seq:
- *     dir.close -> nil
+ * call-seq:
+ *   close -> nil
+ *
+ * Closes the stream in +self+, if it is open, and returns +nil+;
+ * ignored if +self+ is already closed:
  *
- *  Closes the directory stream.
- *  Calling this method on closed Dir object is ignored since Ruby 2.3.
+ *   dir = Dir.new('example')
+ *   dir.read     # => "."
+ *   dir.close     # => nil
+ *   dir.close     # => nil
+ *   dir.read # Raises IOError.
  *
- *     d = Dir.new("testdir")
- *     d.close   #=> nil
  */
 static VALUE
 dir_close(VALUE dir)
@@ -960,8 +1112,7 @@ dir_close(VALUE dir)
 
     dirp = dir_get(dir);
     if (!dirp->dir) return Qnil;
-    closedir(dirp->dir);
-    dirp->dir = NULL;
+    close_dir_data(dirp);
 
     return Qnil;
 }
@@ -975,30 +1126,80 @@ nogvl_chdir(void *ptr)
 }
 
 static void
-dir_chdir(VALUE path)
+dir_chdir0(VALUE path)
 {
-    if (chdir(RSTRING_PTR(path)) < 0)
+    if (IO_WITHOUT_GVL_INT(nogvl_chdir, (void*)RSTRING_PTR(path)) < 0)
         rb_sys_fail_path(path);
 }
 
-static int chdir_blocking = 0;
-static VALUE chdir_thread = Qnil;
+static struct {
+    VALUE thread;
+    VALUE path;
+    int line;
+    int blocking;
+} chdir_lock = {
+    .blocking = 0, .thread = Qnil,
+    .path = Qnil, .line = 0,
+};
+
+static void
+chdir_enter(void)
+{
+    if (chdir_lock.blocking == 0) {
+        chdir_lock.path = rb_source_location(&chdir_lock.line);
+    }
+    chdir_lock.blocking++;
+    if (NIL_P(chdir_lock.thread)) {
+        chdir_lock.thread = rb_thread_current();
+    }
+}
+
+static void
+chdir_leave(void)
+{
+    chdir_lock.blocking--;
+    if (chdir_lock.blocking == 0) {
+        chdir_lock.thread = Qnil;
+        chdir_lock.path = Qnil;
+        chdir_lock.line = 0;
+    }
+}
+
+static int
+chdir_alone_block_p(void)
+{
+    int block_given = rb_block_given_p();
+    if (chdir_lock.blocking > 0) {
+        if (rb_thread_current() != chdir_lock.thread)
+            rb_raise(rb_eRuntimeError, "conflicting chdir during another chdir block");
+        if (!block_given) {
+            if (!NIL_P(chdir_lock.path)) {
+                rb_warn("conflicting chdir during another chdir block\n"
+                        "%" PRIsVALUE ":%d: note: previous chdir was here",
+                        chdir_lock.path, chdir_lock.line);
+            }
+            else {
+                rb_warn("conflicting chdir during another chdir block");
+            }
+        }
+    }
+    return block_given;
+}
 
 struct chdir_data {
     VALUE old_path, new_path;
     int done;
+    bool yield_path;
 };
 
 static VALUE
 chdir_yield(VALUE v)
 {
     struct chdir_data *args = (void *)v;
-    dir_chdir(args->new_path);
+    dir_chdir0(args->new_path);
     args->done = TRUE;
-    chdir_blocking++;
-    if (NIL_P(chdir_thread))
-        chdir_thread = rb_thread_current();
-    return rb_yield(args->new_path);
+    chdir_enter();
+    return args->yield_path ? rb_yield(args->new_path) : rb_yield_values2(0, NULL);
 }
 
 static VALUE
@@ -1006,53 +1207,96 @@ 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);
+        chdir_leave();
+        dir_chdir0(args->old_path);
     }
     return Qnil;
 }
 
+static VALUE
+chdir_path(VALUE path, bool yield_path)
+{
+    if (chdir_alone_block_p()) {
+        struct chdir_data args;
+
+        args.old_path = rb_str_encode_ospath(rb_dir_getwd());
+        args.new_path = path;
+        args.done = FALSE;
+        args.yield_path = yield_path;
+        return rb_ensure(chdir_yield, (VALUE)&args, chdir_restore, (VALUE)&args);
+    }
+    else {
+        char *p = RSTRING_PTR(path);
+        int r = IO_WITHOUT_GVL_INT(nogvl_chdir, p);
+        if (r < 0)
+            rb_sys_fail_path(path);
+    }
+
+    return INT2FIX(0);
+}
+
 /*
- *  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 or a call to <code>chdir</code> without a block occurs inside
- *  a block passed to <code>chdir</code> (even in the same thread).
- *
- *     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
+ * call-seq:
+ *   Dir.chdir(new_dirpath) -> 0
+ *   Dir.chdir -> 0
+ *   Dir.chdir(new_dirpath) {|new_dirpath| ... } -> object
+ *   Dir.chdir {|cur_dirpath| ... } -> object
+ *
+ * Changes the current working directory.
+ *
+ * With argument +new_dirpath+ and no block,
+ * changes to the given +dirpath+:
+ *
+ *   Dir.pwd         # => "/example"
+ *   Dir.chdir('..') # => 0
+ *   Dir.pwd         # => "/"
+ *
+ * With no argument and no block:
+ *
+ * - Changes to the value of environment variable +HOME+ if defined.
+ * - Otherwise changes to the value of environment variable +LOGDIR+ if defined.
+ * - Otherwise makes no change.
+ *
+ * With argument +new_dirpath+ and a block, temporarily changes the working directory:
+ *
+ * - Calls the block with the argument.
+ * - Changes to the given directory.
+ * - Executes the block (yielding the new path).
+ * - Restores the previous working directory.
+ * - Returns the block's return value.
+ *
+ * Example:
+ *
+ *   Dir.chdir('/var/spool/mail')
+ *   Dir.pwd   # => "/var/spool/mail"
+ *   Dir.chdir('/tmp') do
+ *     Dir.pwd # => "/tmp"
+ *   end
+ *   Dir.pwd   # => "/var/spool/mail"
+ *
+ * With no argument and a block,
+ * calls the block with the current working directory (string)
+ * and returns the block's return value.
+ *
+ * Calls to \Dir.chdir with blocks may be nested:
+ *
+ *   Dir.chdir('/var/spool/mail')
+ *   Dir.pwd     # => "/var/spool/mail"
+ *   Dir.chdir('/tmp') do
+ *     Dir.pwd   # => "/tmp"
+ *     Dir.chdir('/usr') do
+ *       Dir.pwd # => "/usr"
  *     end
- *     puts Dir.pwd
+ *     Dir.pwd   # => "/tmp"
+ *   end
+ *   Dir.pwd     # => "/var/spool/mail"
  *
- *  <em>produces:</em>
+ * In a multi-threaded program an error is raised if a thread attempts
+ * to open a +chdir+ block while another thread has one open,
+ * or a call to +chdir+ without a block occurs inside
+ * a block passed to +chdir+ (even in the same thread).
  *
- *     /var/spool/mail
- *     /tmp
- *     /usr
- *     /tmp
- *     /var/spool/mail
+ * Raises an exception if the target directory does not exist.
  */
 static VALUE
 dir_s_chdir(int argc, VALUE *argv, VALUE obj)
@@ -1071,31 +1315,162 @@ dir_s_chdir(int argc, VALUE *argv, VALUE obj)
         path = rb_str_new2(dist);
     }
 
-    if (chdir_blocking > 0) {
-        if (rb_thread_current() != chdir_thread)
-            rb_raise(rb_eRuntimeError, "conflicting chdir during another chdir block");
-        if (!rb_block_given_p())
-            rb_warn("conflicting chdir during another chdir block");
+    return chdir_path(path, true);
+}
+
+#if defined(HAVE_FCHDIR) && defined(HAVE_DIRFD) && HAVE_FCHDIR && HAVE_DIRFD
+static void *
+nogvl_fchdir(void *ptr)
+{
+    const int *fd = ptr;
+
+    return (void *)(VALUE)fchdir(*fd);
+}
+
+static void
+dir_fchdir(int fd)
+{
+    if (IO_WITHOUT_GVL_INT(nogvl_fchdir, (void *)&fd) < 0)
+        rb_sys_fail("fchdir");
+}
+
+struct fchdir_data {
+    VALUE old_dir;
+    int fd;
+    int done;
+};
+
+static VALUE
+fchdir_yield(VALUE v)
+{
+    struct fchdir_data *args = (void *)v;
+    dir_fchdir(args->fd);
+    args->done = TRUE;
+    chdir_enter();
+    return rb_yield_values(0);
+}
+
+static VALUE
+fchdir_restore(VALUE v)
+{
+    struct fchdir_data *args = (void *)v;
+    if (args->done) {
+        chdir_leave();
+        dir_fchdir(RB_NUM2INT(dir_fileno(args->old_dir)));
     }
+    dir_close(args->old_dir);
+    return Qnil;
+}
 
-    if (rb_block_given_p()) {
-        struct chdir_data args;
+/*
+ * call-seq:
+ *   Dir.fchdir(fd) -> 0
+ *   Dir.fchdir(fd) { ... } -> object
+ *
+ * Changes the current working directory to the directory
+ * specified by the integer file descriptor +fd+.
+ *
+ * When passing a file descriptor over a UNIX socket or to a child process,
+ * using +fchdir+ instead of +chdir+ avoids the
+ * {time-of-check to time-of-use vulnerability}[https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use]
+ *
+ * With no block, changes to the directory given by +fd+:
+ *
+ *   Dir.chdir('/var/spool/mail')
+ *   Dir.pwd # => "/var/spool/mail"
+ *   dir  = Dir.new('/usr')
+ *   fd = dir.fileno
+ *   Dir.fchdir(fd)
+ *   Dir.pwd # => "/usr"
+ *
+ * With a block, temporarily changes the working directory:
+ *
+ * - Calls the block with the argument.
+ * - Changes to the given directory.
+ * - Executes the block (yields no args).
+ * - Restores the previous working directory.
+ * - Returns the block's return value.
+ *
+ * Example:
+ *
+ *   Dir.chdir('/var/spool/mail')
+ *   Dir.pwd # => "/var/spool/mail"
+ *   dir  = Dir.new('/tmp')
+ *   fd = dir.fileno
+ *   Dir.fchdir(fd) do
+ *     Dir.pwd # => "/tmp"
+ *   end
+ *   Dir.pwd # => "/var/spool/mail"
+ *
+ * This method uses the
+ * {fchdir()}[https://www.man7.org/linux/man-pages/man3/fchdir.3p.html]
+ * function defined by POSIX 2008;
+ * the method is not implemented on non-POSIX platforms (raises NotImplementedError).
+ *
+ * Raises an exception if the file descriptor is not valid.
+ *
+ * In a multi-threaded program an error is raised if a thread attempts
+ * to open a +chdir+ block while another thread has one open,
+ * or a call to +chdir+ without a block occurs inside
+ * a block passed to +chdir+ (even in the same thread).
+ */
+static VALUE
+dir_s_fchdir(VALUE klass, VALUE fd_value)
+{
+    int fd = RB_NUM2INT(fd_value);
 
-        args.old_path = rb_str_encode_ospath(rb_dir_getwd());
-        args.new_path = path;
+    if (chdir_alone_block_p()) {
+        struct fchdir_data args;
+        args.old_dir = dir_s_alloc(klass);
+        dir_initialize(NULL, args.old_dir, rb_fstring_cstr("."), Qnil);
+        args.fd = fd;
         args.done = FALSE;
-        return rb_ensure(chdir_yield, (VALUE)&args, chdir_restore, (VALUE)&args);
+        return rb_ensure(fchdir_yield, (VALUE)&args, fchdir_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);
+        int r = IO_WITHOUT_GVL_INT(nogvl_fchdir, &fd);
         if (r < 0)
-            rb_sys_fail_path(path);
+            rb_sys_fail("fchdir");
     }
 
     return INT2FIX(0);
 }
+#else
+#define dir_s_fchdir rb_f_notimplement
+#endif
+
+/*
+ * call-seq:
+ *   chdir -> 0
+ *   chdir { ... } -> object
+ *
+ * Changes the current working directory to +self+:
+ *
+ *   Dir.pwd # => "/"
+ *   dir = Dir.new('example')
+ *   dir.chdir
+ *   Dir.pwd # => "/example"
+ *
+ * With a block, temporarily changes the working directory:
+ *
+ * - Calls the block.
+ * - Changes to the given directory.
+ * - Executes the block (yields no args).
+ * - Restores the previous working directory.
+ * - Returns the block's return value.
+ *
+ * Uses Dir.fchdir if available, and Dir.chdir if not, see those
+ * methods for caveats.
+ */
+static VALUE
+dir_chdir(VALUE dir)
+{
+#if defined(HAVE_FCHDIR) && defined(HAVE_DIRFD) && HAVE_FCHDIR && HAVE_DIRFD
+    return dir_s_fchdir(rb_cDir, dir_fileno(dir));
+#else
+    return chdir_path(dir_get(dir)->path, false);
+#endif
+}
 
 #ifndef _WIN32
 VALUE
@@ -1105,19 +1480,15 @@ rb_dir_getwd_ospath(void)
     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_guard = rb_imemo_tmpbuf_new();
     path = ruby_getcwd();
-    DATA_PTR(path_guard) = path;
+    rb_imemo_tmpbuf_set_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);
+    rb_free_tmp_buffer(&path_guard);
     return cwd;
 }
 #endif
@@ -1143,16 +1514,14 @@ rb_dir_getwd(void)
 }
 
 /*
- *  call-seq:
- *     Dir.getwd -> string
- *     Dir.pwd -> string
+ * call-seq:
+ *   Dir.pwd -> string
+ *
+ * Returns the path to the current working directory:
  *
- *  Returns the path to the current working directory of this process as
- *  a string.
+ *   Dir.chdir("/tmp") # => 0
+ *   Dir.pwd           # => "/tmp"
  *
- *     Dir.chdir("/tmp")   #=> 0
- *     Dir.getwd           #=> "/tmp"
- *     Dir.pwd             #=> "/tmp"
  */
 static VALUE
 dir_s_getwd(VALUE dir)
@@ -1181,20 +1550,29 @@ check_dirname(VALUE dir)
 }
 
 #if defined(HAVE_CHROOT)
+static void *
+nogvl_chroot(void *dirname)
+{
+    return (void *)(VALUE)chroot((const char *)dirname);
+}
+
 /*
- *  call-seq:
- *     Dir.chroot( string ) -> 0
+ * call-seq:
+ *   Dir.chroot(dirpath) -> 0
+ *
+ * Changes the root directory of the calling process to that specified in +dirpath+.
+ * The new root directory is used for pathnames beginning with <tt>'/'</tt>.
+ * The root directory is inherited by all children of the calling process.
  *
- *  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.
+ * Only a privileged process may call +chroot+.
+ *
+ * See {Linux chroot}[https://man7.org/linux/man-pages/man2/chroot.2.html].
  */
 static VALUE
 dir_s_chroot(VALUE dir, VALUE path)
 {
     path = check_dirname(path);
-    if (chroot(RSTRING_PTR(path)) == -1)
+    if (IO_WITHOUT_GVL_INT(nogvl_chroot, (void *)RSTRING_PTR(path)) == -1)
         rb_sys_fail_path(path);
 
     return INT2FIX(0);
@@ -1217,18 +1595,20 @@ nogvl_mkdir(void *ptr)
 }
 
 /*
- *  call-seq:
- *     Dir.mkdir( string [, integer] ) -> 0
+ * call-seq:
+ *   Dir.mkdir(dirpath, permissions = 0775) -> 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.
+ * Creates a directory in the underlying file system
+ * at +dirpath+ with the given +permissions+;
+ * returns zero:
  *
- *    Dir.mkdir(File.join(Dir.home, ".foo"), 0700) #=> 0
+ *   Dir.mkdir('foo')
+ *   File.stat(Dir.new('foo')).mode.to_s(8)[1..4] # => "0755"
+ *   Dir.mkdir('bar', 0644)
+ *   File.stat(Dir.new('bar')).mode.to_s(8)[1..4] # => "0644"
  *
+ * See {File Permissions}[rdoc-ref:File@File+Permissions].
+ * Note that argument +permissions+ is ignored on Windows.
  */
 static VALUE
 dir_s_mkdir(int argc, VALUE *argv, VALUE obj)
@@ -1246,7 +1626,7 @@ dir_s_mkdir(int argc, VALUE *argv, VALUE obj)
 
     path = check_dirname(path);
     m.path = RSTRING_PTR(path);
-    r = (int)(VALUE)rb_thread_call_without_gvl(nogvl_mkdir, &m, RUBY_UBF_IO, 0);
+    r = IO_WITHOUT_GVL_INT(nogvl_mkdir, &m);
     if (r < 0)
         rb_sys_fail_path(path);
 
@@ -1262,13 +1642,14 @@ nogvl_rmdir(void *ptr)
 }
 
 /*
- *  call-seq:
- *     Dir.delete( string ) -> 0
- *     Dir.rmdir( string ) -> 0
- *     Dir.unlink( string ) -> 0
+ * call-seq:
+ *   Dir.rmdir(dirpath) -> 0
+ *
+ * Removes the directory at +dirpath+ from the underlying file system:
+ *
+ *   Dir.rmdir('foo') # => 0
  *
- *  Deletes the named directory. Raises a subclass of SystemCallError
- *  if the directory isn't empty.
+ * Raises an exception if the directory is not empty.
  */
 static VALUE
 dir_s_rmdir(VALUE obj, VALUE dir)
@@ -1278,7 +1659,7 @@ dir_s_rmdir(VALUE obj, VALUE dir)
 
     dir = check_dirname(dir);
     p = RSTRING_PTR(dir);
-    r = (int)(VALUE)rb_thread_call_without_gvl(nogvl_rmdir, (void *)p, RUBY_UBF_IO, 0);
+    r = IO_WITHOUT_GVL_INT(nogvl_rmdir, (void *)p);
     if (r < 0)
         rb_sys_fail_path(dir);
 
@@ -1368,11 +1749,11 @@ to_be_ignored(int e)
 }
 
 #ifdef _WIN32
-#define STAT(p, s)	rb_w32_ustati128((p), (s))
-#undef lstat
-#define lstat(p, s)	rb_w32_ulstati128((p), (s))
+#define STAT(args)	(int)(VALUE)nogvl_stat(&(args))
+#define LSTAT(args)	(int)(VALUE)nogvl_lstat(&(args))
 #else
-#define STAT(p, s)	stat((p), (s))
+#define STAT(args)	IO_WITHOUT_GVL_INT(nogvl_stat, (void *)&(args))
+#define LSTAT(args)	IO_WITHOUT_GVL_INT(nogvl_lstat, (void *)&(args))
 #endif
 
 typedef int ruby_glob_errfunc(const char*, VALUE, const void*, int);
@@ -1393,14 +1774,50 @@ at_subpath(int fd, size_t baselen, const char *path)
     return *path ? path : ".";
 }
 
+#if USE_OPENDIR_AT
+struct fstatat_args {
+    int fd;
+    int flag;
+    const char *path;
+    struct stat *pst;
+};
+
+static void *
+nogvl_fstatat(void *args)
+{
+    struct fstatat_args *arg = (struct fstatat_args *)args;
+    return (void *)(VALUE)fstatat(arg->fd, arg->path, arg->pst, arg->flag);
+}
+#else
+struct stat_args {
+    const char *path;
+    struct stat *pst;
+};
+
+static void *
+nogvl_stat(void *args)
+{
+    struct stat_args *arg = (struct stat_args *)args;
+    return (void *)(VALUE)stat(arg->path, arg->pst);
+}
+#endif
+
 /* 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);
+    struct fstatat_args args;
+    args.fd = fd;
+    args.path = path;
+    args.pst = pst;
+    args.flag = 0;
+    int ret = IO_WITHOUT_GVL_INT(nogvl_fstatat, (void *)&args);
 #else
-    int ret = STAT(path, pst);
+    struct stat_args args;
+    args.path = path;
+    args.pst = pst;
+    int ret = STAT(args);
 #endif
     if (ret < 0 && !to_be_ignored(errno))
         sys_warning(path, enc);
@@ -1409,13 +1826,30 @@ do_stat(int fd, size_t baselen, const char *path, struct stat *pst, int flags, r
 }
 
 #if defined HAVE_LSTAT || defined lstat || USE_OPENDIR_AT
+#if !USE_OPENDIR_AT
+static void *
+nogvl_lstat(void *args)
+{
+    struct stat_args *arg = (struct stat_args *)args;
+    return (void *)(VALUE)lstat(arg->path, arg->pst);
+}
+#endif
+
 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);
+    struct fstatat_args args;
+    args.fd = fd;
+    args.path = path;
+    args.pst = pst;
+    args.flag = AT_SYMLINK_NOFOLLOW;
+    int ret = IO_WITHOUT_GVL_INT(nogvl_fstatat, (void *)&args);
 #else
-    int ret = lstat(path, pst);
+    struct stat_args args;
+    args.path = path;
+    args.pst = pst;
+    int ret = LSTAT(args);
 #endif
     if (ret < 0 && !to_be_ignored(errno))
         sys_warning(path, enc);
@@ -1476,7 +1910,7 @@ nogvl_opendir_at(void *ptr)
             /* fallthrough*/
           case 0:
             if (fd >= 0) close(fd);
-            errno = e;
+            rb_errno_set(e);
         }
     }
 #else  /* !USE_OPENDIR_AT */
@@ -1497,7 +1931,7 @@ opendir_at(int basefd, const char *path)
     oaa.path = path;
 
     if (vm_initialized)
-        return rb_thread_call_without_gvl(nogvl_opendir_at, &oaa, RUBY_UBF_IO, 0);
+        return IO_WITHOUT_GVL(nogvl_opendir_at, &oaa);
     else
         return nogvl_opendir_at(&oaa);
 }
@@ -1776,14 +2210,15 @@ is_case_sensitive(DIR *dirp, const char *path)
     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;
-
+    struct getattrlist_args args = GETATTRLIST_ARGS(&al, attrbuf, FSOPT_NOFOLLOW);
 #   if defined HAVE_FGETATTRLIST
-    if (fgetattrlist(dirfd(dirp), &al, attrbuf, sizeof(attrbuf), FSOPT_NOFOLLOW))
-        return -1;
+    int ret = gvl_fgetattrlist(&args, dirfd(dirp));
 #   else
-    if (getattrlist(path, &al, attrbuf, sizeof(attrbuf), FSOPT_NOFOLLOW))
-        return -1;
+    int ret = gvl_getattrlist(&args, path);
 #   endif
+    if (ret)
+        return -1;
+
     if (!(cap->valid[idx] & mask))
         return -1;
     return (cap->capabilities[idx] & mask) != 0;
@@ -1806,7 +2241,8 @@ replace_real_basename(char *path, long base, rb_encoding *enc, int norm_p, int f
     IF_NORMALIZE_UTF8PATH(VALUE utf8str = Qnil);
 
     *type = path_noent;
-    if (getattrlist(path, &al, attrbuf, sizeof(attrbuf), FSOPT_NOFOLLOW)) {
+    struct getattrlist_args args = GETATTRLIST_ARGS(&al, attrbuf, FSOPT_NOFOLLOW);
+    if (gvl_getattrlist(&args, path)) {
         if (!to_be_ignored(errno))
             sys_warning(path, enc);
         return path;
@@ -2179,7 +2615,7 @@ static void
 glob_dir_finish(ruby_glob_entries_t *ent, int flags)
 {
     if (flags & FNM_GLOB_NOSORT) {
-        closedir(ent->nosort.dirp);
+        check_closedir(ent->nosort.dirp);
         ent->nosort.dirp = NULL;
     }
     else if (ent->sort.entries) {
@@ -2210,7 +2646,7 @@ glob_opendir(ruby_glob_entries_t *ent, DIR *dirp, int flags, rb_encoding *enc)
 #ifdef _WIN32
         if ((capacity = dirp->nfiles) > 0) {
             if (!(newp = GLOB_ALLOC_N(rb_dirent_t, capacity))) {
-                closedir(dirp);
+                check_closedir(dirp);
                 return NULL;
             }
             ent->sort.entries = newp;
@@ -2230,7 +2666,7 @@ glob_opendir(ruby_glob_entries_t *ent, DIR *dirp, int flags, rb_encoding *enc)
             ent->sort.entries[count++] = rdp;
             ent->sort.count = count;
         }
-        closedir(dirp);
+        check_closedir(dirp);
         if (count < capacity) {
             if (!(newp = GLOB_REALLOC_N(ent->sort.entries, count))) {
                 glob_dir_finish(ent, 0);
@@ -2245,7 +2681,7 @@ glob_opendir(ruby_glob_entries_t *ent, DIR *dirp, int flags, rb_encoding *enc)
 
   nomem:
     glob_dir_finish(ent, 0);
-    closedir(dirp);
+    check_closedir(dirp);
     return NULL;
 }
 
@@ -2408,7 +2844,7 @@ glob_helper(
 
 # if NORMALIZE_UTF8PATH
         if (!(norm_p || magical || recursive)) {
-            closedir(dirp);
+            check_closedir(dirp);
             goto literally;
         }
 # endif
@@ -2869,7 +3305,7 @@ push_glob(VALUE ary, VALUE str, VALUE base, int flags)
     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);
+            struct dir_data *dirp = RTYPEDDATA_GET_DATA(base);
             if (!dirp->dir) dir_closed();
 #ifdef HAVE_DIRFD
             if ((fd = dirfd(dirp->dir)) == -1)
@@ -2932,7 +3368,7 @@ dir_globs(VALUE args, VALUE base, int flags)
 static VALUE
 dir_glob_option_base(VALUE base)
 {
-    if (base == Qundef || NIL_P(base)) {
+    if (NIL_OR_UNDEF_P(base)) {
         return Qnil;
     }
 #if USE_OPENDIR_AT
@@ -2993,26 +3429,35 @@ dir_open_dir(int argc, VALUE *argv)
 
 
 /*
- *  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
+ * call-seq:
+ *   Dir.foreach(dirpath, encoding: 'UTF-8') {|entry_name| ... }  -> nil
+ *
+ * Calls the block with each entry name in the directory at +dirpath+;
+ * sets the given encoding onto each passed +entry_name+:
+ *
+ *   Dir.foreach('/example') {|entry_name| p entry_name }
  *
- *  Calls the block once for each entry in the named directory, passing
- *  the filename of each entry as a parameter to the block.
+ * Output:
  *
- *  If no block is given, an enumerator is returned instead.
+ *   "config.h"
+ *   "lib"
+ *   "main.rb"
+ *   ".."
+ *   "."
  *
- *     Dir.foreach("testdir") {|x| puts "Got #{x}" }
+ * Encoding:
  *
- *  <em>produces:</em>
+ *   Dir.foreach('/example') {|entry_name| p entry_name.encoding; break }
+ *   Dir.foreach('/example', encoding: 'US-ASCII') {|entry_name| p entry_name.encoding; break }
  *
- *     Got .
- *     Got ..
- *     Got config.h
- *     Got main.rb
+ * Output:
  *
+ *   #<Encoding:UTF-8>
+ *   #<Encoding:US-ASCII>
+ *
+ * See {String Encoding}[rdoc-ref:encodings.rdoc@String+Encoding].
+ *
+ * Returns an enumerator if no block is given.
  */
 static VALUE
 dir_foreach(int argc, VALUE *argv, VALUE io)
@@ -3034,19 +3479,21 @@ dir_collect(VALUE dir)
 }
 
 /*
- *  call-seq:
- *     Dir.entries( dirname )                -> array
- *     Dir.entries( dirname, encoding: enc ) -> array
+ * call-seq:
+ *   Dir.entries(dirname, encoding: 'UTF-8') -> array
  *
- *  Returns an array containing all of the filenames in the given
- *  directory. Will raise a SystemCallError if the named directory
- *  doesn't exist.
+ * Returns an array of the entry names in the directory at +dirpath+;
+ * sets the given encoding onto each returned entry name:
  *
- *  The optional <i>encoding</i> keyword argument specifies the encoding of the
- *  directory. If not specified, the filesystem encoding is used.
+ *   Dir.entries('/example') # => ["config.h", "lib", "main.rb", "..", "."]
+ *   Dir.entries('/example').first.encoding
+ *   # => #<Encoding:UTF-8>
+ *   Dir.entries('/example', encoding: 'US-ASCII').first.encoding
+ *   # => #<Encoding:US-ASCII>
  *
- *     Dir.entries("testdir")   #=> [".", "..", "config.h", "main.rb"]
+ * See {String Encoding}[rdoc-ref:encodings.rdoc@String+Encoding].
  *
+ * Raises an exception if the directory does not exist.
  */
 static VALUE
 dir_entries(int argc, VALUE *argv, VALUE io)
@@ -3064,25 +3511,12 @@ dir_each_child(VALUE dir)
 }
 
 /*
- *  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
+ * call-seq:
+ *   Dir.each_child(dirpath) {|entry_name| ... } -> nil
+ *   Dir.each_child(dirpath, encoding: 'UTF-8') {|entry_name| ... }  -> nil
  *
+ * Like Dir.foreach, except that entries <tt>'.'</tt> and <tt>'..'</tt>
+ * are not included.
  */
 static VALUE
 dir_s_each_child(int argc, VALUE *argv, VALUE io)
@@ -3096,24 +3530,22 @@ dir_s_each_child(int argc, VALUE *argv, VALUE io)
 }
 
 /*
- *  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.
+ * call-seq:
+ *   each_child {|entry_name| ... } -> self
  *
- *  If no block is given, an enumerator is returned instead.
+ * Calls the block with each entry name in +self+
+ * except <tt>'.'</tt> and <tt>'..'</tt>:
  *
- *     d = Dir.new("testdir")
- *     d.each_child  {|x| puts "Got #{x}" }
+ *   dir = Dir.new('/example')
+ *   dir.each_child {|entry_name| p entry_name }
  *
- *  <em>produces:</em>
+ * Output:
  *
- *     Got config.h
- *     Got main.rb
+ *   "config.h"
+ *   "lib"
+ *   "main.rb"
  *
+ * If no block is given, returns an enumerator.
  */
 static VALUE
 dir_each_child_m(VALUE dir)
@@ -3123,14 +3555,14 @@ dir_each_child_m(VALUE dir)
 }
 
 /*
- *  call-seq:
- *     dir.children  -> array
+ * call-seq:
+ *   children -> array
  *
- *  Returns an array containing all of the filenames except for "."
- *  and ".." in this directory.
+ * Returns an array of the entry names in +self+
+ * except for <tt>'.'</tt> and <tt>'..'</tt>:
  *
- *     d = Dir.new("testdir")
- *     d.children   #=> ["config.h", "main.rb"]
+ *   dir = Dir.new('/example')
+ *   dir.children # => ["config.h", "lib", "main.rb"]
  *
  */
 static VALUE
@@ -3142,19 +3574,23 @@ dir_collect_children(VALUE dir)
 }
 
 /*
- *  call-seq:
- *     Dir.children( dirname )                -> array
- *     Dir.children( dirname, encoding: enc ) -> array
+ * call-seq:
+ *   Dir.children(dirpath) -> array
+ *   Dir.children(dirpath, encoding: 'UTF-8') -> 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.
+ * Returns an array of the entry names in the directory at +dirpath+
+ * except for <tt>'.'</tt> and <tt>'..'</tt>;
+ * sets the given encoding onto each returned entry name:
  *
- *  The optional <i>encoding</i> keyword argument specifies the encoding of the
- *  directory. If not specified, the filesystem encoding is used.
+ *   Dir.children('/example') # => ["config.h", "lib", "main.rb"]
+ *   Dir.children('/example').first.encoding
+ *   # => #<Encoding:UTF-8>
+ *   Dir.children('/example', encoding: 'US-ASCII').first.encoding
+ *   # => #<Encoding:US-ASCII>
  *
- *     Dir.children("testdir")   #=> ["config.h", "main.rb"]
+ * See {String Encoding}[rdoc-ref:encodings.rdoc@String+Encoding].
  *
+ * Raises an exception if the directory does not exist.
  */
 static VALUE
 dir_s_children(int argc, VALUE *argv, VALUE io)
@@ -3228,12 +3664,16 @@ file_s_fnmatch(int argc, VALUE *argv, VALUE obj)
 }
 
 /*
- *  call-seq:
- *    Dir.home()       -> "/home/me"
- *    Dir.home("root") -> "/root"
+ * call-seq:
+ *   Dir.home(user_name = nil) -> dirpath
  *
- *  Returns the home directory of the current user or the named user
- *  if given.
+ * Returns the home directory path of the user specified with +user_name+
+ * if it is not +nil+, or the current login user:
+ *
+ *   Dir.home         # => "/home/me"
+ *   Dir.home('root') # => "/root"
+ *
+ * Raises ArgumentError if +user_name+ is not a user name.
  */
 static VALUE
 dir_s_home(int argc, VALUE *argv, VALUE obj)
@@ -3244,7 +3684,7 @@ dir_s_home(int argc, VALUE *argv, VALUE obj)
     rb_check_arity(argc, 0, 1);
     user = (argc > 0) ? argv[0] : Qnil;
     if (!NIL_P(user)) {
-        SafeStringValue(user);
+        StringValue(user);
         rb_must_asciicompat(user);
         u = StringValueCStr(user);
         if (*u) {
@@ -3258,10 +3698,15 @@ dir_s_home(int argc, VALUE *argv, VALUE obj)
 #if 0
 /*
  * call-seq:
- *   Dir.exist?(file_name)   ->  true or false
+ *   Dir.exist?(dirpath) ->  true or false
+ *
+ * Returns whether +dirpath+ is a directory in the underlying file system:
+ *
+ *   Dir.exist?('/example')         # => true
+ *   Dir.exist?('/nosuch')          # => false
+ *   Dir.exist?('/example/main.rb') # => false
  *
- * Returns <code>true</code> if the named file is a directory,
- * <code>false</code> otherwise.
+ * Same as File.directory?.
  *
  */
 VALUE
@@ -3288,26 +3733,33 @@ nogvl_dir_empty_p(void *ptr)
             /* fall through */
           case 0:
             if (e == ENOTDIR) return (void *)Qfalse;
-            errno = e; /* for rb_sys_fail_path */
-            return (void *)Qundef;
+            return (void *)INT2FIX(e);
         }
     }
-    while ((dp = READDIR(dir, NULL)) != NULL) {
+    while ((dp = READDIR_NOGVL(dir, NULL)) != NULL) {
         if (!to_be_skipped(dp)) {
             result = Qfalse;
             break;
         }
     }
-    closedir(dir);
+    check_closedir(dir);
     return (void *)result;
 }
 
 /*
  * call-seq:
- *   Dir.empty?(path_name)  ->  true or false
+ *   Dir.empty?(dirpath) ->  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.
+ * Returns whether +dirpath+ specifies an empty directory:
+ *
+ *   dirpath = '/tmp/foo'
+ *   Dir.mkdir(dirpath)
+ *   Dir.empty?(dirpath)            # => true
+ *   Dir.empty?('/example')         # => false
+ *   Dir.empty?('/example/main.rb') # => false
+ *
+ * Raises an exception if +dirpath+ does not specify a directory or file
+ * in the underlying file system.
  */
 static VALUE
 rb_dir_s_empty_p(VALUE obj, VALUE dirname)
@@ -3326,12 +3778,13 @@ rb_dir_s_empty_p(VALUE obj, VALUE dirname)
     {
         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)
+        struct getattrlist_args args = GETATTRLIST_ARGS(&al, attrbuf, 0);
+        if (gvl_getattrlist(&args, path) != 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 (gvl_getattrlist(&args, path) == 0) {
                 if (attrbuf[0] >= 2 * sizeof(u_int32_t))
                     return RBOOL(attrbuf[1] == 0);
                 if (false_on_notdir) return Qfalse;
@@ -3341,10 +3794,9 @@ rb_dir_s_empty_p(VALUE obj, VALUE dirname)
     }
 #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);
+    result = (VALUE)IO_WITHOUT_GVL(nogvl_dir_empty_p, (void *)path);
+    if (FIXNUM_P(result)) {
+        rb_syserr_fail_path((int)FIX2LONG(result), orig);
     }
     return result;
 }
@@ -3352,11 +3804,15 @@ rb_dir_s_empty_p(VALUE obj, VALUE dirname)
 void
 Init_Dir(void)
 {
+    rb_gc_register_address(&chdir_lock.path);
+    rb_gc_register_address(&chdir_lock.thread);
+
     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,"for_fd", dir_s_for_fd, 1);
     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);
@@ -3376,7 +3832,9 @@ Init_Dir(void)
     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_method(rb_cDir,"chdir", dir_chdir, 0);
 
+    rb_define_singleton_method(rb_cDir,"fchdir", dir_s_fchdir, 1);
     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);
@@ -3393,51 +3851,19 @@ Init_Dir(void)
     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
-     */
+    /* {File::FNM_NOESCAPE}[rdoc-ref:File::Constants@File-3A-3AFNM_NOESCAPE] */
     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
-     */
+    /* {File::FNM_PATHNAME}[rdoc-ref:File::Constants@File-3A-3AFNM_PATHNAME] */
     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
-     */
+    /* {File::FNM_DOTMATCH}[rdoc-ref:File::Constants@File-3A-3AFNM_DOTMATCH] */
     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).
-     */
+    /* {File::FNM_CASEFOLD}[rdoc-ref:File::Constants@File-3A-3AFNM_CASEFOLD] */
     rb_file_const("FNM_CASEFOLD", INT2FIX(FNM_CASEFOLD));
-
-    /*  Document-const: File::Constants::FNM_EXTGLOB
-     *
-     *  Allows file globbing through "{a,b}" in File.fnmatch patterns.
-     */
+    /* {File::FNM_EXTGLOB}[rdoc-ref:File::Constants@File-3A-3AFNM_EXTGLOB] */
     rb_file_const("FNM_EXTGLOB", INT2FIX(FNM_EXTGLOB));
-
-    /*  Document-const: File::Constants::FNM_SYSCASE
-     *
-     *  System default case insensitiveness, equals to FNM_CASEFOLD or
-     *  0.
-     */
+    /* {File::FNM_SYSCASE}[rdoc-ref:File::Constants@File-3A-3AFNM_SYSCASE] */
     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.
-     */
+    /* {File::FNM_SHORTNAME}[rdoc-ref:File::Constants@File-3A-3AFNM_SHORTNAME] */
     rb_file_const("FNM_SHORTNAME", INT2FIX(FNM_SHORTNAME));
 }
 
diff --git a/dir.rb b/dir.rb
index 2e426b0881..eb1a408ee3 100644
--- a/dir.rb
+++ b/dir.rb
@@ -1,15 +1,89 @@
-# 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.
+# An object of class \Dir represents a directory in the underlying file system.
 #
-# 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>).
+# It consists mainly of:
+#
+# - A string _path_, given when the object is created,
+#   that specifies a directory in the underlying file system;
+#   method #path returns the path.
+# - A collection of string <i>entry names</i>,
+#   each of which is the name of a directory or file in the underlying file system;
+#   the entry names may be retrieved
+#   in an {array-like fashion}[rdoc-ref:Dir@Dir+As+Array-Like]
+#   or in a {stream-like fashion}[rdoc-ref:Dir@Dir+As+Stream-Like].
+#
+# == About the Examples
+#
+# Some examples on this page use this simple file tree:
+#
+#   example/
+#   ├── config.h
+#   ├── lib/
+#   │   ├── song/
+#   │   │   └── karaoke.rb
+#   │   └── song.rb
+#   └── main.rb
+#
+# Others use the file tree for the
+# {Ruby project itself}[https://github.com/ruby/ruby].
+#
+# == \Dir As \Array-Like
+#
+# A \Dir object is in some ways array-like:
+#
+# - It has instance methods #children, #each, and #each_child.
+# - It includes {module Enumerable}[rdoc-ref:Enumerable@What-27s+Here].
+#
+# == \Dir As Stream-Like
+#
+# A \Dir object is in some ways stream-like.
+#
+# The stream is initially open for reading,
+# but may be closed manually (using method #close),
+# and will be closed on block exit if created by Dir.open called with a block.
+# The closed stream may not be further manipulated,
+# and may not be reopened.
+#
+# The stream has a _position_, which is the index of an entry in the directory:
+#
+# - The initial position is zero (before the first entry).
+# - Method #tell (aliased as #pos) returns the position.
+# - Method #pos= sets the position (but ignores a value outside the stream),
+#   and returns the position.
+# - Method #seek is like #pos=, but returns +self+ (convenient for chaining).
+# - Method #read, if not at end-of-stream, reads the next entry and increments
+#   the position;
+#   if at end-of-stream, does not increment the position.
+# - Method #rewind sets the position to zero.
+#
+# Examples (using the {simple file tree}[rdoc-ref:Dir@About+the+Examples]):
+#
+#   dir = Dir.new('example') # => #<Dir:example>
+#   dir.pos                  # => 0
+#
+#   dir.read # => "."
+#   dir.read # => ".."
+#   dir.read # => "config.h"
+#   dir.read # => "lib"
+#   dir.read # => "main.rb"
+#   dir.pos  # => 5
+#   dir.read # => nil
+#   dir.pos  # => 5
+#
+#   dir.rewind # => #<Dir:example>
+#   dir.pos    # => 0
+#
+#   dir.pos = 3 # => 3
+#   dir.pos     # => 3
+#
+#   dir.seek(4) # => #<Dir:example>
+#   dir.pos     # => 4
+#
+#   dir.close # => nil
+#   dir.read  # Raises IOError.
 #
 # == What's Here
 #
-# First, what's elsewhere. \Class \Dir:
+# First, what's elsewhere. Class \Dir:
 #
 # - Inherits from {class Object}[rdoc-ref:Object@What-27s+Here].
 # - Includes {module Enumerable}[rdoc-ref:Enumerable@What-27s+Here],
@@ -80,20 +154,32 @@
 #   closing it upon block exit.
 # - ::unlink (aliased as ::delete and ::rmdir): Removes the given directory.
 # - #inspect: Returns a string description of +self+.
+#
 class Dir
   # call-seq:
-  #    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.
+  #   Dir.open(dirpath) -> dir
+  #   Dir.open(dirpath, encoding: nil) -> dir
+  #   Dir.open(dirpath) {|dir| ... } -> object
+  #   Dir.open(dirpath, encoding: nil) {|dir| ... } -> object
+  #
+  # Creates a new \Dir object _dir_ for the directory at +dirpath+.
+  #
+  # With no block, the method equivalent to Dir.new(dirpath, encoding):
+  #
+  #   Dir.open('.') # => #<Dir:.>
+  #
+  # With a block given, the block is called with the created _dir_;
+  # on block exit _dir_ is closed and the block's value is returned:
+  #
+  #   Dir.open('.') {|dir| dir.inspect } # => "#<Dir:.>"
+  #
+  # The value given with optional keyword argument +encoding+
+  # specifies the encoding for the directory entry names;
+  # if +nil+ (the default), the file system's encoding is used:
+  #
+  #   Dir.open('.').read.encoding                       # => #<Encoding:UTF-8>
+  #   Dir.open('.', encoding: Encoding::US_ASCII).read.encoding # => #<Encoding:US-ASCII>
+  #
   def self.open(name, encoding: nil, &block)
     dir = Primitive.dir_s_open(name, encoding)
     if block
@@ -108,115 +194,221 @@ class Dir
   end
 
   # call-seq:
-  #    Dir.new( string ) -> aDir
-  #    Dir.new( string, encoding: enc ) -> aDir
+  #   Dir.new(dirpath) -> dir
+  #   Dir.new(dirpath, encoding: nil) -> dir
+  #
+  # Returns a new \Dir object for the directory at +dirpath+:
+  #
+  #   Dir.new('.') # => #<Dir:.>
   #
-  # Returns a new directory object for the named directory.
+  # The value given with optional keyword argument +encoding+
+  # specifies the encoding for the directory entry names;
+  # if +nil+ (the default), the file system's encoding is used:
+  #
+  #   Dir.new('.').read.encoding                       # => #<Encoding:UTF-8>
+  #   Dir.new('.', encoding: Encoding::US_ASCI).read.encoding # => #<Encoding:US-ASCII>
   #
-  # 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
 
   # call-seq:
-  #    Dir[ string [, string ...] [, base: path] [, sort: true] ] -> array
+  #   Dir[*patterns, base: nil, sort: true] -> array
+  #
+  # Calls Dir.glob with argument +patterns+
+  # and the values of keyword arguments +base+ and +sort+;
+  # returns the array of selected entry names.
   #
-  # 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
 
   # call-seq:
-  #    Dir.glob( pattern, [flags], [base: path] [, sort: true] )                       -> array
-  #    Dir.glob( pattern, [flags], [base: path] [, sort: true] ) { |filename| block }  -> nil
+  #   Dir.glob(patterns, flags: 0, base: nil, sort: true) -> array
+  #   Dir.glob(patterns, flags: 0, base: nil, sort: true) {|entry_name| ... } -> 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.
+  # Forms an array _entry_names_ of the entry names selected by the arguments.
   #
-  # 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.
+  # Argument +patterns+ is a string pattern or an array of string patterns;
+  # note that these are not regexps; see below.
   #
-  # 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.
+  # Notes for the following examples:
   #
-  # 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).
+  # - <tt>'*'</tt> is the pattern that matches any entry name
+  #   except those that begin with <tt>'.'</tt>.
+  # - We use method Array#take to shorten returned arrays
+  #   that otherwise would be very large.
   #
-  # <code>*</code>::
-  #   Matches any file. Can be restricted by other values in the glob.
-  #   Equivalent to <code>/.*/mx</code> in regexp.
+  # With no block, returns array _entry_names_;
+  # example (using the {simple file tree}[rdoc-ref:Dir@About+the+Examples]):
   #
-  #   <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).
+  #   Dir.glob('*') # => ["config.h", "lib", "main.rb"]
   #
-  #   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>.
+  # With a block, calls the block with each of the _entry_names_
+  # and returns +nil+:
   #
-  # <code>**</code>::
-  #   Matches directories recursively if followed by <code>/</code>.  If
-  #   this path segment contains any other characters, it is the same as the
-  #   usual <code>*</code>.
+  #   Dir.glob('*') {|entry_name| puts entry_name } # => nil
   #
-  # <code>?</code>::
-  #   Matches any one character. Equivalent to <code>/.{1}/</code> in regexp.
+  # Output:
   #
-  # <code>[set]</code>::
-  #   Matches any one character in +set+.  Behaves exactly like character sets
-  #   in Regexp, including set negation (<code>[^a-z]</code>).
+  #   config.h
+  #   lib
+  #   main.rb
   #
-  # <code>{p,q}</code>::
-  #   Matches either literal <code>p</code> or literal <code>q</code>.
-  #   Equivalent to pattern alternation in regexp.
+  # If optional keyword argument +flags+ is given,
+  # the value modifies the matching; see below.
   #
-  #   Matching literals may be more than one character in length.  More than
-  #   two literals may be specified.
+  # If optional keyword argument +base+ is given,
+  # its value specifies the base directory.
+  # Each pattern string specifies entries relative to the base directory;
+  # the default is <tt>'.'</tt>.
+  # The base directory is not prepended to the entry names in the result:
   #
-  # <code>\\</code>::
-  #   Escapes the next metacharacter.
+  #   Dir.glob(pattern, base: 'lib').take(5)
+  #   # => ["abbrev.gemspec", "abbrev.rb", "base64.gemspec", "base64.rb", "benchmark.gemspec"]
+  #   Dir.glob(pattern, base: 'lib/irb').take(5)
+  #   # => ["cmd", "color.rb", "color_printer.rb", "completion.rb", "context.rb"]
   #
-  #   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.
+  # If optional keyword +sort+ is given, its value specifies whether
+  # the array is to be sorted; the default is +true+.
+  # Passing value +false+ with that keyword disables sorting
+  # (though the underlying file system may already have sorted the array).
   #
-  # Examples:
+  # <b>Patterns</b>
+  #
+  # Each pattern string is expanded
+  # according to certain metacharacters;
+  # examples below use the {Ruby file tree}[rdoc-ref:Dir@About+the+Examples]:
+  #
+  # - <tt>'*'</tt>: Matches any substring in an entry name,
+  #   similar in meaning to regexp <tt>/.*/mx</tt>;
+  #   may be restricted by other values in the pattern strings:
+  #
+  #   - <tt>'*'</tt> matches all entry names:
+  #
+  #       Dir.glob('*').take(3)  # => ["BSDL", "CONTRIBUTING.md", "COPYING"]
+  #
+  #   - <tt>'c*'</tt> matches entry names beginning with <tt>'c'</tt>:
+  #
+  #       Dir.glob('c*').take(3) # => ["CONTRIBUTING.md", "COPYING", "COPYING.ja"]
+  #
+  #   - <tt>'*c'</tt> matches entry names ending with <tt>'c'</tt>:
+  #
+  #       Dir.glob('*c').take(3) # => ["addr2line.c", "array.c", "ast.c"]
+  #
+  #   - <tt>'\*c\*'</tt> matches entry names that contain <tt>'c'</tt>,
+  #     even at the beginning or end:
+  #
+  #       Dir.glob('*c*').take(3) # => ["CONTRIBUTING.md", "COPYING", "COPYING.ja"]
+  #
+  #   Does not match Unix-like hidden entry names ("dot files").
+  #   To include those in the matched entry names,
+  #   use flag IO::FNM_DOTMATCH or something like <tt>'{*,.*}'</tt>.
+  #
+  #  - <tt>'**'</tt>: Matches entry names recursively
+  #    if followed by  the slash character <tt>'/'</tt>:
+  #
+  #      Dir.glob('**/').take(3) # => ["basictest/", "benchmark/", "benchmark/gc/"]
+  #
+  #    If the string pattern contains other characters
+  #    or is not followed by a slash character,
+  #    it is equivalent to <tt>'*'</tt>.
+  #
+  # - <tt>'?'</tt> Matches any single character;
+  #   similar in meaning to regexp <tt>/./</tt>:
+  #
+  #     Dir.glob('io.?') # => ["io.c"]
+  #
+  # - <tt>'[set]'</tt>: Matches any one character in the string _set_;
+  #   behaves like a {Regexp character class}[rdoc-ref:Regexp@Character+Classes],
+  #   including set negation (<tt>'[^a-z]'</tt>):
+  #
+  #     Dir.glob('*.[a-z][a-z]').take(3)
+  #     # => ["CONTRIBUTING.md", "COPYING.ja", "KNOWNBUGS.rb"]
+  #
+  # - <tt>'{abc,xyz}'</tt>:
+  #   Matches either string _abc_ or string _xyz_;
+  #   behaves like {Regexp alternation}[rdoc-ref:Regexp@Alternation]:
+  #
+  #     Dir.glob('{LEGAL,BSDL}') # => ["LEGAL", "BSDL"]
+  #
+  #   More than two alternatives may be given.
+  #
+  # - <tt>\\</tt>: Escapes the following metacharacter.
+  #
+  #   Note that on Windows, the backslash character may not be used
+  #   in a string pattern:
+  #   <tt>Dir['c:\\foo*']</tt> will not work, use <tt>Dir['c:/foo*']</tt> instead.
+  #
+  # More examples (using the {simple file tree}[rdoc-ref:Dir@About+the+Examples]):
+  #
+  #   # We're in the example directory.
+  #   File.basename(Dir.pwd) # => "example"
+  #   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", "lib", "main.rb"]
+  #   Dir.glob('*', File::FNM_DOTMATCH) # => [".", "config.h", "lib", "main.rb"]
+  #   Dir.glob(["*.rb", "*.h"])         # => ["main.rb", "config.h"]
+  #
+  #   Dir.glob('**/*.rb')
+  #   => ["lib/song/karaoke.rb", "lib/song.rb", "main.rb"]
+  #
+  #   Dir.glob('**/*.rb', base: 'lib')  #   => ["song/karaoke.rb", "song.rb"]
+  #
+  #   Dir.glob('**/lib')                # => ["lib"]
+  #
+  #   Dir.glob('**/lib/**/*.rb')        # => ["lib/song/karaoke.rb", "lib/song.rb"]
+  #
+  #   Dir.glob('**/lib/*.rb')           # => ["lib/song.rb"]
+  #
+  # <b>Flags</b>
+  #
+  # If optional keyword argument +flags+ is given (the default is zero -- no flags),
+  # its value should be the bitwise OR of one or more of the constants
+  # defined in module File::Constants.
+  #
+  # Example:
+  #
+  #   flags = File::FNM_EXTGLOB | File::FNM_DOTMATCH
+  #
+  # Specifying flags can extend, restrict, or otherwise modify the matching.
+  #
+  # The flags for this method (other constants in File::Constants do not apply):
+  #
+  # - File::FNM_DOTMATCH:
+  #   specifies that entry names beginning with <tt>'.'</tt>
+  #   should be considered for matching:
+  #
+  #     Dir.glob('*').take(5)
+  #     # => ["BSDL", "CONTRIBUTING.md", "COPYING", "COPYING.ja", "GPL"]
+  #     Dir.glob('*', flags: File::FNM_DOTMATCH).take(5)
+  #     # => [".", ".appveyor.yml", ".cirrus.yml", ".dir-locals.el", ".document"]
   #
-  #    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"]
+  # - File::FNM_EXTGLOB:
+  #   enables the pattern extension
+  #   <tt>'{a,b}'</tt>, which matches pattern _a_ and pattern _b_;
+  #   behaves like a
+  #   {regexp union}[rdoc-ref:Regexp.union]
+  #   (e.g., <tt>'(?:a|b)'</tt>):
   #
-  #    Dir.glob("**/*.rb")                 #=> ["main.rb",
-  #                                        #    "lib/song.rb",
-  #                                        #    "lib/song/karaoke.rb"]
+  #     pattern = '{LEGAL,BSDL}'
+  #     Dir.glob(pattern)      # => ["LEGAL", "BSDL"]
   #
-  #    Dir.glob("**/*.rb", base: "lib")    #=> ["song.rb",
-  #                                        #    "song/karaoke.rb"]
+  # - File::FNM_NOESCAPE:
+  #   specifies that escaping with the backslash character <tt>'\'</tt>
+  #   is disabled; the character is not an escape character.
   #
-  #    Dir.glob("**/lib")                  #=> ["lib"]
+  # - File::FNM_PATHNAME:
+  #   specifies that metacharacters <tt>'*'</tt> and <tt>'?'</tt>
+  #   do not match directory separators.
   #
-  #    Dir.glob("**/lib/**/*.rb")          #=> ["lib/song.rb",
-  #                                        #    "lib/song/karaoke.rb"]
+  # - File::FNM_SHORTNAME:
+  #   specifies that patterns may match short names if they exist; Windows only.
   #
-  #    Dir.glob("**/lib/*.rb")             #=> ["lib/song.rb"]
   def self.glob(pattern, _flags = 0, flags: _flags, base: nil, sort: true)
+    Primitive.attr! :use_block
     Primitive.dir_s_glob(pattern, flags, base, sort)
   end
 end
diff --git a/dln.c b/dln.c
index 0edd709bbe..2549f03183 100644
--- a/dln.c
+++ b/dln.c
@@ -25,6 +25,7 @@ static void dln_loaderror(const char *format, ...);
 #endif
 #include "dln.h"
 #include "internal.h"
+#include "internal/box.h"
 #include "internal/compilers.h"
 
 #ifdef HAVE_STDLIB_H
@@ -107,36 +108,45 @@ dln_loaderror(const char *format, ...)
 #endif
 
 #if defined(_WIN32) || defined(USE_DLN_DLOPEN)
-static size_t
-init_funcname_len(const char **file)
+struct string_part {
+    const char *ptr;
+    size_t len;
+};
+
+static struct string_part
+init_funcname_len(const char *file)
 {
-    const char *p = *file, *base, *dot = NULL;
+    const char *p = file, *base, *dot = NULL;
 
     /* 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;
     }
-    *file = base;
     /* Delete suffix if it exists */
-    return (dot ? dot : p) - base;
+    const size_t len = (dot ? dot : p) - base;
+    return (struct string_part){base, len};
 }
 
-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;\
+static inline char *
+concat_funcname(char *buf, const char *prefix, size_t plen, const struct string_part base)
+{
+    if (!buf) {
+        dln_memerror();
+    }
+    memcpy(buf, prefix, plen);
+    memcpy(buf + plen, base.ptr, base.len);
+    buf[plen + base.len] = '\0';
+    return buf;
+}
+
+#define build_funcname(prefix, buf, file) do {\
+    const struct string_part f = init_funcname_len(file);\
+    const size_t plen = sizeof(prefix "") - 1;\
+    *(buf) = concat_funcname(ALLOCA_N(char, plen+f.len+1), prefix, plen, f);\
 } while (0)
+
+#define init_funcname(buf, file) build_funcname(FUNCNAME_PREFIX, buf, file)
 #endif
 
 #ifdef USE_DLN_DLOPEN
@@ -272,13 +282,15 @@ rb_w32_check_imported(HMODULE ext, HMODULE mine)
 static bool
 dln_incompatible_func(void *handle, const char *funcname, void *const fp, const char **libname)
 {
-    Dl_info dli;
     void *ex = dlsym(handle, funcname);
     if (!ex) return false;
     if (ex == fp) return false;
+#  if defined(HAVE_DLADDR) && !defined(__CYGWIN__)
+    Dl_info dli;
     if (dladdr(ex, &dli)) {
         *libname = dli.dli_fname;
     }
+#  endif
     return true;
 }
 
@@ -372,9 +384,13 @@ dln_open(const char *file)
 # ifndef RTLD_GLOBAL
 #  define RTLD_GLOBAL 0
 # endif
+# ifndef RTLD_LOCAL
+#  define RTLD_LOCAL 0 /* TODO: 0??? some systems (including libc) use 0x00100 for RTLD_GLOBAL, 0x00000 for RTLD_LOCAL */
+# endif
 
     /* Load file */
-    handle = dlopen(file, RTLD_LAZY|RTLD_GLOBAL);
+    int mode = rb_box_available() ? RTLD_LAZY|RTLD_LOCAL : RTLD_LAZY|RTLD_GLOBAL;
+    handle = dlopen(file, mode);
     if (handle == NULL) {
         error = dln_strerror();
         goto failed;
@@ -392,6 +408,12 @@ dln_open(const char *file)
                 dln_fatalerror("%s - %s", incompatible, file);
             }
             else {
+                if (libruby_name) {
+                    const size_t len = strlen(libruby_name);
+                    char *const tmp = ALLOCA_N(char, len + 1);
+                    if (tmp) memcpy(tmp, libruby_name, len + 1);
+                    libruby_name = tmp;
+                }
                 dlclose(handle);
                 if (libruby_name) {
                     dln_loaderror("linked to incompatible %s - %s", libruby_name, file);
@@ -413,33 +435,63 @@ dln_open(const char *file)
 static void *
 dln_sym(void *handle, const char *symbol)
 {
-    void *func;
-    const char *error;
-
 #if defined(_WIN32)
-    char message[1024];
+    return GetProcAddress(handle, symbol);
+#elif defined(USE_DLN_DLOPEN)
+    return dlsym(handle, symbol);
+#endif
+}
+
+static uintptr_t
+dln_sym_func(void *handle, const char *symbol)
+{
+    void *func = dln_sym(handle, symbol);
 
-    func = GetProcAddress(handle, symbol);
     if (func == NULL) {
+        const char *error;
+#if defined(_WIN32)
+        char message[1024];
         error = dln_strerror();
-        goto failed;
-    }
-
 #elif defined(USE_DLN_DLOPEN)
-    func = dlsym(handle, symbol);
-    if (func == NULL) {
         const size_t errlen = strlen(error = dln_strerror()) + 1;
         error = memcpy(ALLOCA_N(char, errlen), error, errlen);
-        goto failed;
-    }
 #endif
+        dln_loaderror("%s - %s", error, symbol);
+    }
+    return (uintptr_t)func;
+}
 
-    return func;
+#define dln_sym_callable(rettype, argtype, handle, symbol) \
+    (*(rettype (*)argtype)dln_sym_func(handle, symbol))
+#endif
 
-  failed:
-    dln_loaderror("%s - %s", error, symbol);
-}
+void *
+dln_symbol(void *handle, const char *symbol)
+{
+#if defined(_WIN32) || defined(USE_DLN_DLOPEN)
+    if (EXTERNAL_PREFIX[0]) {
+        const size_t symlen = strlen(symbol);
+        char *const tmp = ALLOCA_N(char, symlen + sizeof(EXTERNAL_PREFIX));
+        if (!tmp) dln_memerror();
+        memcpy(tmp, EXTERNAL_PREFIX, sizeof(EXTERNAL_PREFIX) - 1);
+        memcpy(tmp + sizeof(EXTERNAL_PREFIX) - 1, symbol, symlen + 1);
+        symbol = tmp;
+    }
+    if (handle == NULL) {
+# if defined(USE_DLN_DLOPEN)
+        handle = dlopen(NULL, RTLD_LAZY | RTLD_GLOBAL);
+# elif defined(_WIN32)
+        handle = rb_libruby_handle();
+# else
+        return NULL;
+# endif
+    }
+    return dln_sym(handle, symbol);
+#else
+    return NULL;
 #endif
+}
+
 
 #if defined(RUBY_DLN_CHECK_ABI) && defined(USE_DLN_DLOPEN)
 static bool
@@ -450,26 +502,23 @@ abi_check_enabled_p(void)
 }
 #endif
 
-void *
-dln_load(const char *file)
+static void *
+dln_load_and_init(const char *file, const char *init_fct_name)
 {
 #if defined(_WIN32) || defined(USE_DLN_DLOPEN)
     void *handle = dln_open(file);
 
 #ifdef RUBY_DLN_CHECK_ABI
-    unsigned long long (*abi_version_fct)(void) = (unsigned long long(*)(void))dln_sym(handle, "ruby_abi_version");
-    unsigned long long binary_abi_version = (*abi_version_fct)();
-    if (binary_abi_version != ruby_abi_version() && abi_check_enabled_p()) {
+    typedef unsigned long long abi_version_number;
+    abi_version_number binary_abi_version =
+        dln_sym_callable(abi_version_number, (void), handle, EXTERNAL_PREFIX "ruby_abi_version")();
+    if (binary_abi_version != RUBY_ABI_VERSION && abi_check_enabled_p()) {
         dln_loaderror("incompatible ABI version of binary - %s", file);
     }
 #endif
 
-    char *init_fct_name;
-    init_funcname(&init_fct_name, file);
-    void (*init_fct)(void) = (void(*)(void))dln_sym(handle, init_fct_name);
-
     /* Call the init code */
-    (*init_fct)();
+    dln_sym_callable(void, (void), handle, init_fct_name)();
 
     return handle;
 
@@ -477,6 +526,7 @@ dln_load(const char *file)
     {
         void (*init_fct)(void);
 
+        /* TODO: check - AIX's load system call will return the first/last symbol/function? */
         init_fct = (void(*)(void))load((char*)file, 1, 0);
         if (init_fct == NULL) {
             aix_loaderror(file);
@@ -493,3 +543,29 @@ dln_load(const char *file)
 
     return 0;			/* dummy return */
 }
+
+void *
+dln_load(const char *file)
+{
+#if defined(_WIN32) || defined(USE_DLN_DLOPEN)
+    char *init_fct_name;
+    init_funcname(&init_fct_name, file);
+    return dln_load_and_init(file, init_fct_name);
+#else
+    dln_notimplement();
+    return 0;
+#endif
+}
+
+void *
+dln_load_feature(const char *file, const char *fname)
+{
+#if defined(_WIN32) || defined(USE_DLN_DLOPEN)
+    char *init_fct_name;
+    init_funcname(&init_fct_name, fname);
+    return dln_load_and_init(file, init_fct_name);
+#else
+    dln_notimplement();
+    return 0;
+#endif
+}
diff --git a/dln.h b/dln.h
index 902f753450..711abf592c 100644
--- a/dln.h
+++ b/dln.h
@@ -25,6 +25,8 @@ RUBY_SYMBOL_EXPORT_BEGIN
 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);
 void *dln_load(const char*);
+void *dln_load_feature(const char*, const char*);
+void *dln_symbol(void*,const char*);
 
 RUBY_SYMBOL_EXPORT_END
 
diff --git a/dln_find.c b/dln_find.c
index 5d380f5d39..ae37b9dde4 100644
--- a/dln_find.c
+++ b/dln_find.c
@@ -11,11 +11,9 @@
 
 #ifdef RUBY_EXPORT
 #include "ruby/ruby.h"
-#define dln_warning rb_warning
-#define dln_warning_arg
+#define dln_warning(...) rb_warning(__VA_ARGS__)
 #else
-#define dln_warning fprintf
-#define dln_warning_arg stderr,
+#define dln_warning(...) fprintf(stderr, __VA_ARGS__)
 #endif
 #include "dln.h"
 
@@ -75,7 +73,7 @@ dln_find_exe_r(const char *fname, const char *path, char *buf, size_t size
             ".";
     }
     buf = dln_find_1(fname, path, buf, size, 1 DLN_FIND_EXTRA_ARG);
-    if (envpath) free(envpath);
+    free(envpath);
     return buf;
 }
 
@@ -109,7 +107,7 @@ dln_find_1(const char *fname, const char *path, char *fbuf, size_t size,
 
     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, \
+#define PATHNAME_TOO_LONG() dln_warning(pathname_too_long, \
                                         ((bp - fbuf) > 100 ? 100 : (int)(bp - fbuf)), fbuf, \
                                         ((bp - fbuf) > 100 ? "..." : ""), \
                                         (fnlen > 100 ? 100 : (int)fnlen), fname, \
@@ -120,8 +118,7 @@ dln_find_1(const char *fname, const char *path, char *fbuf, size_t size,
     RETURN_IF(!fname);
     fnlen = strlen(fname);
     if (fnlen >= size) {
-        dln_warning(dln_warning_arg
-                    "openpath: pathname too long (ignored)\n\tFile \"%.*s\"%s\n",
+        dln_warning("openpath: pathname too long (ignored)\n\tFile \"%.*s\"%s\n",
                     (fnlen > 100 ? 100 : (int)fnlen), fname,
                     (fnlen > 100 ? "..." : ""));
         return NULL;
diff --git a/dmydln.c b/dmydln.c
index d05cda0b8e..62a89e2da5 100644
--- a/dmydln.c
+++ b/dmydln.c
@@ -1,3 +1,6 @@
+// This file is used by miniruby, not ruby.
+// ruby uses dln.c.
+
 #include "ruby/ruby.h"
 
 NORETURN(void *dln_load(const char *));
@@ -8,3 +11,21 @@ dln_load(const char *file)
 
     UNREACHABLE_RETURN(NULL);
 }
+
+NORETURN(void *dln_load_feature(const char*,const char*));
+void*
+dln_load_feature(const char *file, const char *fname)
+{
+    rb_loaderror("this executable file can't load extension libraries");
+
+    UNREACHABLE_RETURN(NULL);
+}
+
+NORETURN(void *dln_symbol(void*,const char*));
+void*
+dln_symbol(void *handle, const char *symbol)
+{
+    rb_loaderror("this executable file can't load extension libraries");
+
+    UNREACHABLE_RETURN(NULL);
+}
diff --git a/dmyenc.c b/dmyenc.c
index 75b8a2da43..4771841281 100644
--- a/dmyenc.c
+++ b/dmyenc.c
@@ -1,3 +1,17 @@
+// This file is used by dynamically-linked ruby, which has no
+// statically-linked encodings other than the builtin encodings.
+//
+// - miniruby does not use this Init_enc. Instead, "miniinit.c"
+//   provides Init_enc, which defines only the builtin encodings.
+//
+// - Dynamically-linked ruby uses this Init_enc, which requires
+//   "enc/encdb.so" to load the builtin encodings and set up the
+//   optional encodings.
+//
+// - Statically-linked ruby does not use this Init_enc. Instead,
+//   "enc/encinit.c" (which is a generated file) defines Init_enc,
+//   which activates the encodings.
+
 #define require(name) ruby_require_internal(name, (unsigned int)sizeof(name)-1)
 int ruby_require_internal(const char *, int);
 
diff --git a/dmyext.c b/dmyext.c
index 4d273f7faf..66be95ab4e 100644
--- a/dmyext.c
+++ b/dmyext.c
@@ -1,3 +1,17 @@
+// This file is used by dynamically-linked ruby, which has no
+// statically-linked extension libraries.
+//
+// - miniruby does not use this Init_ext. Instead, "miniinit.c"
+//   provides Init_enc, which does nothing too. It does not support
+//   require'ing extension libraries.
+//
+// - Dynamically-linked ruby uses this Init_ext, which does
+//   nothing. It loads extension libraries by dlopen, etc.
+//
+// - Statically-linked ruby does not use this Init_ext. Instead,
+//   "ext/extinit.c" (which is a generated file) defines Init_ext,
+//   which activates the (statically-linked) extension libraries.
+
 void
 Init_ext(void)
 {
diff --git a/doc/.document b/doc/.document
index 5ef2d99651..3a95c9617b 100644
--- a/doc/.document
+++ b/doc/.document
@@ -1,8 +1,13 @@
-*.md
-*.rb
-*.rdoc
+[^_]*.md
+[^_]*.rb
+[^_]*.rdoc
 contributing
+distribution
 NEWS
 syntax
 optparse
+date
 rdoc
+jit
+security
+language
diff --git a/doc/ChangeLog-1.9.3 b/doc/ChangeLog-1.9.3
deleted file mode 100644
index 0f80eed2d5..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
-	  is path-rootless form. Bug #4759
-
-Thu Jun  2 23:51:03 2011  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: Improve the line ending detection algorithm
-	  patch by Alexey).
-
-Thu Jun  2 20:05:57 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_s_write, rb_io_s_binwrite): return!!!
-
-Thu Jun  2 16:29:34 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* io.c: Add File.write, File.binwrite. [Feature #1081] [ruby-core:21701]
-
-	* test/ruby/test_io.rb: Test for File.write, File.binwrite.
-
-	* NEWS: News for above.
-
-Thu Jun  2 12:33:09 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_fflush, rb_io_flush): need to fsync() when ruby calls
-	  internal flush. [ruby-core:36670] [Bug #4813]
-
-Thu Jun  2 07:56:24 2011  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: reduce CPU power required by an eventloop.
-
-Tue May 31 21:28:33 2011  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_signal.rb (TestSignal#test_signal_requiring):
-	  redirect stderr to null device.
-
-Thu Jun  2 00:45:26 2011  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: fix for uninitialized global variables.
-	  [Ruby 1.9 - Bug #4811]
-
-Wed Jun  1 21:57:08 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (native_sleep): fix 1000times calculation error.
-	  this is a regression since r31457. [Bug #4808] [ruby-dev:43606]
-
-Wed Jun  1 17:19:16 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c: remove unused macro.
-
-Wed Jun  1 15:42:18 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (peek_n): new macro to see next nth char.
-
-Wed Jun  1 15:40:46 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/rbinstall.rb (gem): fix for rubygems change.
-
-Wed Jun  1 14:07:57 2011  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*: Imported minitest 2.2.2 (r6281)
-	* test/minitest/*: ditto
-
-Wed Jun  1 12:35:50 2011  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/rubygems*: Import rubygems 1.8.5 (released @ 137c80f)
-	* test/rubygems: Ditto
-
-Wed Jun  1 12:34:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* NEWS: add new features of bigdecimal.
-
-Wed Jun  1 09:41:14 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/cgi/util.rb:  Improve documentation.  Patch by Kuba Fietkiewicz.
-	  [Ruby 1.9 - Bug #4775]
-	* lib/cgi/core.rb:  ditto
-
-Wed Jun  1 09:26:05 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/mathn.rb:  Improve documentation and attach it to Numeric.
-	  Modified from patch by Anil V.  [Ruby 1.9 - Bug #4762]
-
-Wed Jun  1 09:21:30 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/prime.rb:  Indent examples enough to appear as code sections.
-	  Note that Prime is Enumerable.  [#4762]
-
-Wed Jun  1 07:34:57 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* hash.c (key_i):  Change rdoc from "the first occurrence" to "an
-	  occurrence" since first occurrence is not a specification of
-	  Hash#key.  [Ruby 1.9 - Bug #4760]
-
-Wed Jun  1 07:26:19 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/pty/pty.c (pty_check):  Restore "not reached" comment.
-	  [Ruby 1.9 - Bug #4756]
-
-Wed Jun  1 07:21:40 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/zlib/zlib.c:  Fix document-method declarations for set_sync and
-	  set_comment.  [Ruby 1.9 - Bug #4695]
-
-Wed Jun  1 06:43:13 2011  Masaya Tarui  <tarui@ruby-lang.org>
-
-	* load.c (loaded_feature_path): cut nonsense loop execution to fix
-	  performance bug.
-
-Wed Jun  1 01:16:02 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_mix_module): implement Module#mix.
-
-Wed Jun  1 01:15:12 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_encoding_set): should honor already set ecflags since it
-	  might be set by mode option.  fixed #4804
-
-Wed Jun  1 00:34:04 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* ext/bigdecimal/bigdecimal.c (GetVpValueWithPrec): remove unused
-	  variable.
-
-Wed Jun  1 00:32:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (GetVpValueWithPrec): support instantiation from
-	  a Float through Rational.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_new): ditto.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_global_new_float): add a test for
-	  the above changes.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_new_with_float): ditto.
-
-Wed Jun  1 00:07:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_coerce): support coerce with a
-	  Rational.  The precision used for instantiate a BigDecimal from the
-	  given Rational is obtained from the receiver BigDecimal.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_coerce): add a test for the
-	  above change.
-
-Tue May 31 23:49:08 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (offset_to_sec): fixed invalid validation.
-
-Tue May 31 23:43:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (GetVpValueWithPrec): replace the algorithm for
-	  coercing from a Rational to stop requiring "bigdecimal/util.rb".
-	  [ruby-core:34318]
-
-	* ext/bigdecimal/bigdecimal.c (GetVpValue): refactoring.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_new): support instantiation from a
-	  Rational.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_global_new_with_rational): add a
-	  test for the above change.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_new_with_rational): ditto.
-
-Tue May 31 22:44:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_new): support instantiation a
-	  BigDecimal object from an Integer.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_new_with_integer):
-	  add for testing the above change.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_global_new): replace its body
-	  with a BigDecimal_new call.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_global_new_with_integer):
-	  add for testing the above change.
-
-Tue May 31 22:24:39 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: use simple/complex mode instead of light/right mode.
-	* test/date/*.rb: followed the above changes.
-
-Tue May 31 21:28:33 2011  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_signal.rb (TestSignal#test_signal_requiring):
-	  initialize SIGINT handler.
-
-Tue May 31 17:03:24 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* lib/net/http.rb, lib/net/protocol.rb: Allow to configure to wait
-	  server returning '100 continue' response before sending HTTP request
-	  body. See NEWS for more detail. See #3622.
-	  Original patch is made by Eric Hodel <drbrain@segment7.net>.
-
-	* test/net/http/test_http.rb: test it.
-
-	* NEWS: Add new feature.
-
-Tue May 31 14:17:49 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_s_pipe): potential bug. the mode of read IO is set as
-	  DEFAULT_TEXTMODE in call of io_set_encoding(), and of write IO is
-	  also set as it in call of io_new_instance() via rb_protect().
-	  so, if DEFAULT_TEXTMODE is not 0, we should check the result of
-	  extract_binmode() and avoid crush of default IO mode and the result.
-
-Tue May 31 13:00:17 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* strftime.c (rb_strftime_with_timespec): improved style consistency.
-	  constified some variables.
-
-	* test/test_time.rb (TestTime#test_huge_precision): test for #4456.
-
-Tue May 31 12:53:10 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/io/wait/test_io_wait.rb (TestIOWait#{test_nread,test_ready?,
-	  test_wait}: give system some time to process the written data.
-
-Tue May 31 12:40:49 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_io.rb (TestIO#test_open_mode): MUST release resources
-	  explicitly. fix problem of r31671
-
-Tue May 31 10:49:55 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm_exec.c: remove conditions for clang
-	  because clang version 3.0 (trunk 132165) doesn't need them.
-
-Mon May 30 22:19:33 2011  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_signal.rb (TestSignal#test_signal_requiring): don't
-	  close stderr.
-
-Mon May 30 20:22:00 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_signal.rb (TestSignal#test_signal_requiring): small
-	  but critical typo of r31642.  sorry...
-	  [Bug #4798] [ruby-core:36550]
-
-Mon May 30 15:44:16 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* insns.def (opt_mult): as r31805, volatile it.
-	  Without this, clang -O fails calculation.
-
-	* numeric.c (fix_mul): ditto.
-
-	* rational.c (f_imul): ditto.
-
-Mon May 30 10:26:51 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (int_pow): make sure to assign the result of x * z.
-	  If xz is optimized out, the value won't overflow.
-
-Sun May 29 23:17:29 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_match): fix rdoc of Regexp#=~.
-	  patched by Tsuyoshi Sawada. [Bug #4781]
-
-Sun May 29 23:10:42 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/webrick/https.rb (WEBrick::HTTPRequest#parse_uri):
-	  keep parse_uri as private. patched by okkez. [Bug #4773]
-
-Sun May 29 17:53:03 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* numeric.c: add #include "internal.h" for rb_big_uminus() prototype.
-
-Sun May 29 15:09:05 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_round): fix for negative value.
-
-Sun May 29 02:16:53 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/net/http/utils.rb (TestNetHTTPUtils#teardown): add nil check.
-
-Sun May 29 00:22:40 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (before_exec, after_exec): change from macro to function.
-
-Sat May 28 19:30:17 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (before_exec, after_exec): change SIGPIPE handler to SIG_DFL
-	  before calling execve(). Because r31760 reintroduced an issue that
-	  system() may hang up (i.e. [ruby-dev:12261]).
-	* process.c (save_sigpipe, restore_sigpipe): new.
-
-Sat May 28 16:08:16 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* signal.c (Init_signal, default_handler): change default SIGPIPE handler
-	  from empty function to SIG_IGN. [ruby-dev:43215]
-	* signal.c (sigpipe): removed.
-
-Sat May 28 03:04:27 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (fill_cbuf): return MORE_CHAR_SUSPENDED when cbuf is not empty.
-
-Sat May 28 02:22:48 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* string.c (rb_str_bytesize): rb_str_bytesize() should use LONG2NUM().
-	  Patch by Nikolai Weibull. [Bug #4789] [ruby-core:36511]
-
-Sat May 28 02:06:26 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (fill_cbuf): Fix test-all crash.
-
-Sat May 28 00:58:40 2011  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/ostruct.rb (method_missing): Handle [] and []= correctly.
-	  Based on a patch by Caius Durling, bug #4179 [ruby-core:33792]
-
-Fri May 27 23:56:54 2011  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_core.rb (Tester::test_text_frozen): split frozen
-	  string test. refs #4783
-
-Fri May 27 22:46:23 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/rbinstall.rb (gem): install gemspec of json.  fixed #4784
-
-Fri May 27 22:45:10 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (validate_enc_binmode): do not clear textmode flag if
-	  default.  fixed #4732
-
-	* io.c (fill_cbuf): finish reading at EOF.
-
-Fri May 27 11:31:51 2011  misfo <tedwardo2@gmail.com>
-
-	* lib/rexml/text.rb (REXML::Text#initialize): prevent an error
-	  when passing a frozen string to REXML::Text.new
-
-	  dup the string passed in instead of cloning so that it's frozen
-	  state is ignored
-
-Fri May 27 08:47:26 2011  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* thread.c (ppoll): typo bug fix.
-
-Fri May 27 08:35:04 2011  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: hang-up at exit before calling Tk.mainloop.
-
-	* ext/tk/lib/tk/extconf.rb: cannot make on MinGW [Ruby 1.9 - Bug #4141].
-
-Thu May 27 00:34:07 2011  James Edward Gray II  <jeg2@ruby-lang.org>
-
-    * lib/csv.rb: Enhance each() to support Enumerator.
-
-Thu May 26 10:32:11 2011  James Edward Gray II  <jeg2@ruby-lang.org>
-
-    * lib/csv.rb: Documentation improvements from Ysiad Ferreiras.
-      [Ruby 1.9 - Bug #4785]
-
-Thu May 26 15:42:02 2011  Cezary Baginski <cezary.baginski@gmail.com>
-
-	* lib/xmlrpc/parser.rb (FaultException): fix to_s and inspect
-
-	* test/xmlrpc/parser.rb: test for the above
-
-Wed May 25 11:54:31 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/curses/curses.c:  Remove color constants block.
-	  [Ruby 1.9 - Bug #4748]
-
-Wed May 25 09:56:45 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/curses/curses.c:  Add missing documentation for button state, MIN
-	  and MAX comments.  Add Curses. to TABSIZE= and ESCDELAY= methods.
-	  [Ruby 1.9 - Bug #4747]
-
-Wed May 25 09:35:31 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/benchmark.rb:  Restore nodoc for Benchmark::Job and
-	  Benchmark::Report.  [Ruby 1.9 - Bug #4726]
-
-Wed May 25 09:29:38 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/pop.rb:  Hide implementation details from RDoc.
-	  [Ruby 1.9 - Bug #4711]
-
-Wed May 25 09:26:29 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/ftp.rb:  Add :nodoc: for private methods.
-	  [Ruby 1.9 - Bug #4710]
-
-Wed May 25 09:19:17 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/zlib/zlib.c:  Fix Document-method declarations.  Improve
-	  Zlib::GzipFile's method catalog.  [Ruby 1.9 - Bug #4695]
-
-Wed May 25 08:22:12 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/erb.rb:  Hide documentation for implementation details of ERB.
-	  [Ruby 1.9 - Bug #4694]
-
-Wed May 25 07:58:14 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile.{mkdir,rmdir}): revert for backward
-	  compatibility.
-
-Wed May 25 07:13:12 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* spec/README: update the description.
-
-Wed May 25 07:12:16 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile.{lock,unlock}_tempfile): refactor.
-
-Tue May 24 17:30:36 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* spec/README: fix typo.
-	  patched by bowsersenior. https://github.com/ruby/ruby/pull/24
-
-Tue May 24 07:06:34 2011  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: fail to start Tk.mainloop (exit immediately) on
-	  some environment (reported on [ruby-talk:381444]).
-
-	* ext/tk/lib/tk/canvas.rb: support creating a canvas item object from
-	  an item ID number.
-
-	* ext/tk/lib/tk/image.rb: import documents which are pull-requested.
-	  [Ruby 1.9 - Feature #4595]
-
-	* ext/tk/lib/tk/extconf.rb: search directories for 64bit library (e.g.
-	  /usr/lib64), add some new configure options (see README.tcltklib),
-	  and bug fix.
-
-	* ext/tk/lib/tk/README.tcltklib: modify docs for some new configure
-	  options.
-
-Tue May 24 04:01:46 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/yaml.rb: switch default YAML engine to Psych, old syck engine
-	  may be enabled via YAML::ENGINE.yamler = "syck". [ruby-core:36374]
-
-Mon May 23 09:45:26 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* include/ruby/defines.h (CASEFOLD_FILESYSTEM): Revert r30508. Forgot to
-	  include this file in the commit r31692. __APPLE__ is not
-	  CASEFOLD_FILESYSTEM again, from this time.
-
-Mon May 23 10:01:02 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c: Do not parse zero-tagged values as EOC. Do
-	  not let current length become negative for infinite length constructed
-	  values. Support constructed values of length zero. Added tests.
-
-Mon May 23 09:19:53 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/smtp.rb:  Document Net::SMTP::Response.  Patch by J.R. Garcia.
-	  [Ruby 1.9 - Bug #4768]
-
-Mon May 23 09:03:52 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit/parallel.rb: Never Ignore SIGINT. When received
-	Interrupt, immediately puts result and exit. [ruby-dev:43571]
-
-	* lib/test/unit.rb: When received Interrupt, wait results from workers
-	and collect them. [ruby-dev:43571]
-
-Mon May 23 09:08:07 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/mathn.rb:  Improve documentation.  Patch by Sandor Szucs.
-	  [Ruby 1.9 - Bug #4767]
-
-Mon May 23 08:45:55 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/ostruct.rb:  Improve documentation.  Patch by Franklin Webber.
-	  [Ruby 1.9 - Bug #4761]
-
-Mon May 23 08:35:24 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* hash.c:  Improve documentation of Hash#key.  Patch by Utkarsh
-	  Kukreti.  [Ruby 1.9 - Bug #4760]
-
-Mon May 23 08:32:59 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* enumerator.c:  Improve documentation.  Patch by Dave Copeland.
-	  [Ruby 1.9 - Bug #4757]
-
-Mon May 23 07:19:45 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* NEWS (openssl): Infinite length support. Different behavior of
-	  Constructive and Primitive constructors.
-
-Mon May 23 06:58:33 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c: Forbid Constructives whose value is not an
-	  Array to prevent segfault. Added test.
-
-Mon May 23 06:33:17 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c: Forbid Constructive without infinite
-	  length. This also prevents a segfault. Added test and improved
-	  documentation.
-
-Mon May 23 05:58:14 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c: Fix decoding of infinite length values.
-	  Simplified ossl_asn1_decode0 by splitting it into three separate
-	  functions. Add tests.
-	  [Ruby 1.9 - Bug #4374][ruby-core:35123]
-
-Mon May 23 04:03:46 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_initialize): Allow creation of
-	  Constructives with an explicit tag_class parameter without
-	  automatically setting tagging to :EXPLICIT. Fixes a bug when encoding
-	  infinite length primitive values.
-
-Mon May 23 04:03:46 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_cons_to_der): Add an additional
-	  EOC for infinite length Constructives that are supposed to be encoded
-	  with explicit tagging. Also tabify method correctly.
-
-Mon May 23 03:44:39 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1data_to_der): Remove redundant
-	  flag tmp_cons.
-
-Mon May 23 00:35:00 2001  Kenta Murata  <mrkn@mrkn.jp>
-
-	* bignum.c (dump_bignum, bigmul1_balance, big_split, biglsh_bang),
-	  (bigrsh_bang, big_split3, bigmul1_toom3, bigmul0): implement Toom3 (Toom-Cook)
-	  multiplication.
-
-	* include/ruby/defines.h: add format prefixes for BDIGIT and BDIGIT_DBL.
-
-Sun May 22 23:24:02 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c: Instead of rb_intern use static symbols to
-	  improve performance.
-
-Sun May 22 21:56:51 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c: Use OpenSSL constants V_ASN1_xxx instead of
-	  hardcoded numbers for initializing class_tag_map.
-
-Sun May 22 21:29:29 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* include/ruby/defines.h (CASEFOLD_FILESYSTEM): Revert r30508. See #4255.
-	  Now __APPLE__ is not CASEFOLD_FILESYSTEM again.
-
-	* load.c (loaded_feature_path, rb_feature_p, load_lock): Revert r30508.
-	  See #4255. Make $LOADED_FEATURES scanning case-sensitive again.
-
-Sun May 22 18:59:27 2011  Hiroshi Nakamura  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_asn1.c(ossl_asn1_default_tag): avoid using RCLASS_SUPER
-	  to make it compilable. Plus, tabify and change variable definition style.
-
-Sun May 22 18:26:43 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (vm_xcalloc): use calloc provided by platforms.
-	  fixes #4754
-
-Sun May 22 11:44:53 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/pty/pty.c:  Improve documentation.  Patch by David Copeland.
-	  [Ruby 1.9 - Bug #4756]
-
-Sun May 22 11:26:39 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/timeout.rb:  Improve documentation.  Patch by David Copeland.
-	  [Ruby 1.9 - Bug #4755]
-
-Sun May 22 11:21:41 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/ipaddr.rb:  Improve documentation.  Patch by Sandor Szucs.
-	  [Ruby 1.9 - Bug #4753]
-
-Sun May 22 11:14:40 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/forwardable.rb:  Document def_delegator.  Patch by Sandor Szucs.
-	  [Ruby 1.9 - Bug #4752]
-
-Sun May 22 11:11:41 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/fileutils.rb:  Document block behavior of FileUtils.cd.  Patch by
-	  Bil Kleb.  [Ruby 1.9 - Bug #4751]
-
-Sun May 22 11:07:47 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/curses/curses.c:  Complete documentation.  Patch by Vincent
-	  Batts.  [Ruby 1.9 - Bug #4748]
-
-Sun May 22 09:29:43 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_set_program_name):
-	  use spawn. it prevent that other tests inherit renamed $0.
-
-Sun May 22 08:57:13 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c: Default tag lookup in constant time via hash
-	  instead of previous linear algorithm.
-	  [Ruby 1.9 - Feature #4309][ruby-core:34813]
-
-Sun May 22 07:54:16 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_digest.c: Explain DSS and DSS1 in documentation.
-
-Sun May 22 07:10:25 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_pkey_dsa.rb: Add tests for sign/verify.
-
-Sun May 22 06:07:17 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_x509cert.rb: Merge DSA-related tests from ruby_1_8
-	  branch.
-
-Sun May 22 04:11:12 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (Init_Thread): add a code comment why the meaningless
-	  line is necessary.
-
-Sun May 22 01:35:12 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: modified documentation.
-
-Sat May 21 22:46:26 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_strftime(date_strftime_with_tmx): "%v" means "%e-%b-%Y".
-
-Sat May 21 22:14:35 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_io_extract_modeenc): accept combination hash and
-	  File::Constants. (eg. File.open('yo', :mode => File::WRONLY))
-	  [Feature #4742][ruby-core:36338]
-	* test/ruby/test_io.rb (TestIO#test_open_mode): new test.
-
-Sat May 21 21:44:14 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/test_switch_hitter.rb: new.
-
-Sat May 21 21:18:29 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_{core,parse}.c: moved nearly all core code from ext/date/lib.
-	* ext/date/lib/{date,date/format}.rb: removed nearly all code.
-
-Sat May 21 02:58:46 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/.document:  Add curses to documented extensions.
-	* ext/curses/curses.c:  Improve documentation.  Patch by Vincent Batts.
-	  [Ruby 1.9 - Bug #4747]
-
-Sat May 21 02:51:01 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/bigdecimal/lib/bigdecimal/util.rb:  Improve documentation.  Patch
-	  by Pete Higgins.  [Ruby 1.9 - Bug #4746]
-
-Sat May 21 02:44:10 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/bigdecimal/lib/bigdecimal/jacobian.rb:  Document isEqual.  Patch
-	  by Kuba Fietkiewicz.  [Ruby 1.9 - Bug #4744]
-
-Sat May 21 02:22:34 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/date/lib/date/format.rb:  Document date formats.  Patch by
-	  Clinton Nixon.  [Ruby 1.9 - Bug #4743]
-
-Fri May 20 05:15:19 2011  Nobuhiro Iwamatsu  <iwamatsu@nigauri.org>
-
-	* gc.c: Fix build on m68k by 'error: too few arguments to
-	  function 'mark_locations_array''.
-
-Fri May 20 04:23:42 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/scanf.rb:  Improve documentation.  Patch by Gabe McArthur.
-	  [Ruby 1.9 - Bug #4735]
-
-Fri May 20 00:58:01 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/ibm737-tbl.rb: greek code page.  fixes #4738
-
-Thu May 19 14:44:05 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_signal.rb (test_signal_requiring): skip on Windows.
-	  we can send SIGINT only to pid 0 and the process itself.
-
-Thu May 19 09:07:08 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib: revert r31635-r31638 and untabify with expand(1).
-
-Thu May 19 07:47:26 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_pkey_rsa.rb: Add tests for sign/verify.
-
-Thu May 19 07:19:16 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_pkey.c: Add documentation.
-
-Thu May 19 07:06:56 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/benchmark.rb:  Fix indentation.
-	* lib/net/imap.rb:  Fix indentation of regular expressions.
-
-Thu May 19 06:36:11 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/imap.rb:  Fix indentation of EOF for heredoc.
-	* lib/debug.rb (Commands):  Fix indentation of EOHELP for heredoc.
-
-Thu May 19 06:30:38 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/mkmf.rb:  Fix indentation of EOM for heredoc.
-
-Thu May 19 06:16:41 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib:  Convert tabs to spaces for ruby files per
-	  https://bugs.ruby-lang.org/projects/ruby/wiki/DeveloperHowto#coding-style
-	  Patch by Steve Klabnik [Ruby 1.9 - Bug #4730]
-	  Patch by Jason Dew [Ruby 1.9 - Feature #4718]
-
-Thu May 19 06:06:07 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/cgi/util.rb:  Improve documentation.  Patch by Clinton Nixon.
-	  [Ruby 1.9 - Bug #4733]
-	* lib/cgi/core.rb:  ditto
-	* lib/cgi/cookie.rb:  ditto
-
-Thu May 19 06:02:21 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/tempfile.rb:  Document Dir.mkdir and Dir.rmdir.  Patch by Clinton
-	  Nixon.  [Ruby 1.9 - Bug #4728]
-
-Thu May 19 05:57:52 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* encoding.c:  Improve documentation for Encoding#default_external and
-	  Encoding#default_internal.
-
-Wed May 18 22:45:26 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/console/lib/console/size.rb (IO#console_size): new
-	  method.  (EXPERIMENTAL)
-
-Wed May 18 22:41:51 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* internal.h: add for internal use only.
-
-Wed May 18 22:36:43 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (setup_exception): internal exception should be hidden
-
-Wed May 18 20:25:04 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* lib/timeout.rb (Timeout#timeout): don't leak "execution expired"
-	  exception. [Bug #4283] [ruby-core:34534].
-
-Wed May 18 06:09:24 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/cmath.rb:  Add some examples and improve documentation.  Patch by
-	  Sandor Szucs.  [Ruby 1.9 - Bug #4727]
-
-Wed May 18 05:40:31 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/benchmark.rb:  Remove nodoc from Benchmark::Job and
-	  Benchmark::Report.  Patch by Sandor Szucs.  [Ruby 1.9 - Bug #4726]
-
-Wed May 18 05:29:26 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/webrick/compat.rb:  Improve documentation.  Patch by Sandor
-	  Szucs.  [Ruby 1.9 - Bug #4725]
-
-Wed May 18 05:10:35 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/tracer.rb:  Improve documentation.  Patch by Richard Ramsden.
-	  [Ruby 1.9 - Feature #4720]
-
-Wed May 18 04:53:41 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/cmath.rb:  Improve documentation.  Patch by Jason Dew.
-	  [Ruby 1.9 - Feature #4717]
-
-Wed May 18 04:50:24 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/ftp.rb:  Improve documentation.  Patch by Vincent Batts.
-	  [Ruby 1.9 - Bug #4710]
-
-Wed May 18 03:14:49 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* test/test_singleton.rb:  Add tests from lib/singleton.rb.  Patch by
-	  Pete Higgins.  [Ruby 1.9 - Bug #4715]
-
-Wed May 18 03:03:07 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/singleton.rb:  Improve documentation.  Patch by Pete Higgins.
-	  [Ruby 1.9 - Bug #4709]
-
-Tue May 17 21:24:04 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_mutex_lock): remove remove_signal_thread_list() call.
-	  It's meaningless because lock_interrupt doesn't call
-	  add_signal_thread_list().
-
-Tue May 17 20:20:49 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* vm_core.h (rb_thread_struct): add volatile to
-	  transition_for_lock because it is not protected by lock.
-
-Tue May 17 20:08:53 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* LEGAL (missing/{elf,tgamma,lgamma_r}.c): they've been replaced by
-	  public domain implementations.
-
-	* LEGAL (vsnprintf.c): it has moved to srcdir from missing/.
-
-	* LEGAL (missing/crypt.c): list its original license.
-
-Tue May 17 19:54:26 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* LEGAL (configure): add missing/setproctitle.c
-
-Tue May 17 19:35:01 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-	Fix FreeBSD test failure.
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_set_program_name):
-	  use ps -o command instead of ps -o cmd. FreeBSD doesn't support
-	  -o cmd option.
-
-Tue May 17 08:04:26 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_digest.c: Add documentation.
-
-Tue May 17 07:14:58 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/http.rb:  Improve documentation of proxy configuration
-	  methods.  Patch by Alf Mikula.  [Ruby 1.9 - Bug #4714]
-
-Tue May 17 07:09:01 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/pop.rb:  Improve documentation.  Patch by Vincent Batts.
-	  [Ruby 1.9 - Bug #4711]
-	* lib/net/telnet.rb:  ditto
-
-Tue May 17 07:00:41 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/http.rb:  Fix nodoc for Net::HTTP::version_1_1?.  Patch by
-	  Alf Mikula.  [Ruby 1.9 - Bug #4713]
-
-Tue May 17 06:56:26 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/optparse.rb:  Add link to make_switch to improve documentation.
-	  Patch by David Copeland.  [Ruby 1.9 - Bug #4708]
-
-Tue May 17 06:50:40 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/observer.rb:  Improve documentation.  Patch by David Copeland.
-	  [Ruby 1.9 - Bug #4707]
-
-Tue May 17 06:42:53 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/logger.rb:  Improve documentation.  Patch by David Copeland.
-	  [Ruby 1.9 - Bug #4706]
-
-Tue May 17 06:28:14 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/gserver.rb:  Improve documentation.  Patch by David Copeland.
-	  [Ruby 1.9 - Bug #4705]
-
-Tue May 17 06:21:15 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/cgi.rb: Add toplevel documentation to class CGI
-	* lib/cgi/session.rb: Add overview documentation to CGI::Cookie
-	* lib/cgi/html.rb:  Don't add CGI::TagMaker documentation to CGI.
-	  Patch by David Copeland.  [Ruby 1.9 - Bug #4704]
-	* lib/cgi/core.rb:  Clean up CGI documentation.  Patch by David
-	  Copeland.  [Ruby 1.9 - Bug #4704]
-	* lib/cgi/cookie.rb:  Clean up CGI::Cookie documentation.  Patch by
-	  David Copeland.  [Ruby 1.9 - Bug #4704]
-
-Tue May 17 05:52:30 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/digest: Improve documentation of Digest, Digest::HMAC and
-	  Digest::SHA2.  Patch by Pete Higgins.  [Ruby 1.9 - Bug #4702]
-
-Tue May 17 03:51:42 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/abbrev.rb:  Hide copyright and revision information from RDoc.
-	  Inspired by patch from David Copeland, bug #4703.
-
-Tue May 17 03:33:21 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/timeout.rb (module Timeout):  Hide internal constants.  Patch by
-	  Pete Higgins.  [Ruby 1.9 - Bug #4701]
-
-Mon May 16 11:21:09 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* configure.in, win32/Makefile.sub (RUBY_SO_NAME): add CPU as prefix
-	  of RUBY_SO_NAME on x64/ia64 mswin/mingw.
-	  [Feature #4602]
-
-Mon May 16 08:00:05 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc.rb:  Update to RDoc 3.6.1, allows OpenSSL::Digest to be
-	  found.
-
-Mon May 16 05:49:54 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/drb/acl.rb:  Add documentation.
-
-Mon May 16 05:13:20 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_asn1.c: Add documentation.
-
-Mon May 16 00:32:05 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_signal.rb (TestSignal#test_signal_process_group):
-	  skip if the platform doesn't have :pgroup capability. (i.e. skip
-	  if mswin32)
-
-Sun May 15 23:53:31 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* include/ruby/intern.h: resurrect old rb_fd_copy().
-	* thread.c (rb_fd_copy): ditto.
-
-Sun May 15 23:45:11 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* include/ruby/intern.h: remove rb_fd_copy() to rb_fd_dup() and
-	  rb_w32_fdcopy() to rb_w32_fd_dup().
-	* win32/win32.c: ditto.
-	* thread.c: ditto.
-
-Sun May 15 22:26:39 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* signal.c (rb_f_kill): accept '-SIGXXX' style signal with Symbol or
-	  implicit conversion with #to_str. [ruby-dev:43169] fixes #4362
-	* test/ruby/test_signal.rb (test_signal_process_group): add a test
-	  for send signal to process group.
-
-Sun May 15 21:22:35 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* cont.c (cont_init): clear macihne_stack_start/end of saved thread to
-	  prevent mark machine stack of GC'ed Thread. root Fiber is not
-	  initialized by fiber_init().
-	  based on a patch by Serge Balyuk [ruby-core:35891] fixes #4612
-	* test/ruby/test_fiber.rb (test_gc_root_fiber): add test for it.
-
-Sun May 15 21:04:29 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (econv_init): revert r31353.  [ruby-dev:43512]
-
-Sun May 15 03:39:35 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/zlib/zlib.c:  Improve documentation.  Patch by Vincent Batts.
-	  [Ruby 1.9 - Bug #4695]
-
-Sun May 15 03:23:46 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/erb.rb:  Document ERB::Compiler.  Patch by Simon Chiang.
-	  [Ruby 1.9 - Bug #4694]
-
-Sun May 15 00:58:47 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-	fix mswin32 build error.
-
-	* missing/setproctitle.c: add #ifdef HAVE_UNISTD_H.
-	* win32/Makefile.sub (MISSING): add setproctitle.obj
-
-Sat May 14 22:45:28 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* missing/setproctitle.c: add to include "ruby/util.h".
-
-Sat May 14 19:52:22 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_set_program_name):
-	  add for $0 test.
-
-Sat May 14 19:50:46 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* missing/setproctitle.c (compat_init_setproctitle): use
-	  ruby_strdup() instead of strdup().
-
-Sat May 14 19:37:31 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* include/ruby/missing.h: add setproctitle() declaration.
-	* missing/setproctitle.c: added.
-	* configure.in: add check for missing/setproctitle.c.
-
-	* ruby.c (ruby_process_options): add to call compat_init_setproctitle().
-	* ruby.c (set_arg0): remove all platform specific code. it's
-	  moved to missing/setproctitle.c.
-	* ruby.c (origarg): remove len field. It's no longer used.
-	* ruby.c (get_arglen): removed.
-
-	This patch makes a lot of cleanup set_arg0 related code and fixes
-	[Feature #4689].
-
-Sat May 14 17:42:21 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* process.c (rb_proc_times): improve documentation.
-	  [ruby-core:35785] fixes #4581, reported by Andrew Grimm.
-
-Sat May 14 12:12:54 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_pkey_dsa.rb: Add basic tests and tests that
-	  ensure new public key PEM encoding behavior and ensure backward
-	  compatibility.
-	  [Ruby 1.9 - Bug #4422] [ruby-core:35328]
-	* test/openssl/test_pkey_rsa.rb: Remove line with 'puts'.
-
-Sat May 14 12:06:49 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/context.rb (class RDoc):  Fix infinite loop caused by
-	  re-encountering BasicObject.
-
-Sat May 14 10:32:36 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* test/openssl/test_pkey_rsa.rb: Add tests that ensure new public key
-	  encoding behavior and also ensure backward compatibility.
-	  [Ruby 1.9 - Bug #4421] [ruby-core:35327]
-
-Sat May 14 09:50:10 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/yaml/dbm.rb:  Add documentation.  Patch by Justin Collins.
-	  [Ruby 1.9 - Bug #4693]
-	* lib/yaml/store.rb:  ditto
-
-Sat May 14 09:31:43 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc.rb: Updated to RDoc 3.6
-
-Sat May 14 07:30:29 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych.rb: released a new gem, so increasing version.
-
-Sat May 14 05:08:32 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_digest.c
-	* ext/openssl/ossl_pkey.c
-	* ext/openssl/ossl_pkey.h
-	* test/openssl/pkey/test_pkey_rsa.rb
-	  Reverted premature commit. Sorry for the noise!
-
-Sat May 14 05:02:58 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/uri.rb:  Add toplevel documentation.  Patch by Vincent Batts.
-	  [Ruby 1.9 - Bug #4690]
-
-Sat May 14 04:19:06 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* NEWS: Describe altered behaviour for RSA and DSA public key
-	  encoding. [Ruby 1.9 - Bug #4421, Bug #4422]
-	  [ruby-core:35327,35328]
-
-Sat May 14 02:57:52 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/ipaddr.rb (unless Socket):  Document valid*? methods.  Patch by
-	  Sebastian Martinez.  [Ruby 1.9 - Feature #4687]
-
-Sat May 14 02:54:04 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rexml/functions.rb:  Add some documentation for REXML::Functions.
-	  Patch by Sebastian Martinez.  [Ruby 1.9 - Feature #4688]
-
-Sat May 14 02:51:42 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/resolv.rb:  Hide private method and state-tracking constants from
-	  RDoc.  Patch by Mark Turner.  [Ruby 1.9 - Feature #4691]
-
-Fri May 13 19:23:21 2011  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* numeric.c (flo_coerce): Add #flo_coerce documentation.
-	  Patch by Sebastian Martinez.
-	  https://github.com/ruby/ruby/pull/21
-
-Fri May 13 18:42:22 2011  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* README.EXT: fix typo.  Patch by William Blackerby.
-	  https://github.com/ruby/ruby/pull/19
-
-	* README.EXT.ja: ditto.
-
-Fri May 13 15:22:34 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_select): check invalid handle before doing
-	  select operations.  see [ruby-dev:43513], [ruby-dev:43535]
-
-Fri May 13 08:34:00 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/rdoc.rb:  Output summary after documentation report.
-	* lib/rdoc/stats/normal.rb:  Don't output information for users when
-	  we're not on a TTY
-
-Fri May 13 07:49:02 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/fileutils.rb:  Hide internal methods from RDoc.  Patch by Darragh
-	  Curran.  [Ruby 1.9 - Bug #4684]
-
-Fri May 13 07:36:23 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/webrick/httpservlet/erbhandler.rb:  Add documentation.
-
-Fri May 13 07:04:33 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/mathn.rb:  Fix indentation.  Patch by Jason Dew.
-	  [Ruby 1.9 - Feature #4682]
-
-Fri May 13 06:50:43 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/mathn.rb:  Add documentation.  Patch by Jason Dew.  [Ruby 1.9 -
-	  Feature #4667]
-
-Fri May 13 05:44:19 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/logger.rb (class Logger):  Document Logger#datetime_format.
-	  Patch by Sergio Gil Perez de la Manga.  [Ruby 1.9 - Bug #4678]
-
-Fri May 13 05:39:11 2011  Eric Hodel <drbrain@segment7.net>
-
-	* re.c (Init_Regexp): Document option constants.  Patch by Vincent
-	  Batts.  [Ruby 1.9 - Bug #4677]
-	* lib/uri/common.rb (module URI):  Documentation for URI.  Patch by
-	  Vincent Batts.  [Ruby 1.9- Bug #4677]
-	* lib/uri/ftp.rb (module URI):  ditto
-	* lib/uri/generic.rb (module URI):  ditto
-	* lib/uri/http.rb (module URI):  ditto
-	* lib/uri/https.rb (module URI):  ditto
-	* lib/uri/ldap.rb (module URI):  ditto
-	* lib/uri/ldaps.rb (module URI):  ditto
-	* lib/uri/mailto.rb (module URI):  ditto
-	* process.c (Init_process):  Document Process constants.  Patch by
-	  Vincent Batts.  [Ruby 1.9- Bug #4677]
-
-Fri May 13 05:16:38 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rss/atom.rb (module RSS):  Document URIs.  Patch by Mark Turner.
-	  [Ruby 1.9 - #4671]
-	* lib/rss/rss.rb (module RSS):  Document exception classes.  Patch by
-	  Mark Turner.  [Ruby 1.9 - #4671]
-
-Fri May 13 02:15:18 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (select_internal): remove unused variable (interrupt_flag).
-
-Thu May 12 18:24:34 2011  Kouhei Sutou  <kou@clear-code.com>
-
-	* configure.in: limit to "T" type for prefix of external symbols
-	  because x86_64-w64-mingw32-gcc on Debian GNU/Linux generates the
-	  following symbol:
-	    0000000068483390 D _GLOBAL__F__conftest_external
-
-	  Approved by nobu.
-
-Thu May 12 14:50:52 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/dl/test_base.rb (Fiddle::LIBC_SO): its always msvc*.dll on
-	  mswin/mingw.
-
-Thu May 12 14:47:53 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (Logging.postpone): copy only when temporary logfile
-	  exists.
-
-Thu May 12 12:24:22 2011  Nobuhiro Iwamatsu  <iwamatsu@nigauri.org>
-
-	* ext/openssl/ossl_ssl.c: By trunk@31346, function check of SSLv2 is
-	  executed.
-	  However, the problem is not revised in this.
-	  This adds the control of using function of SSLv2 in made macro by
-	  function check.
-
-Thu May 12 08:10:46 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/set.rb (class Set):  Add nodoc to internal-use methods.  Patch
-	  by Pete Higgins.  [Ruby 1.9 - Bug #4665]
-
-Thu May 12 08:01:14 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_pkey_ec.c: Allow encryption when PEM-encoding
-	  Elliptic Curve private keys.
-	  [ruby-core:35329] [Bug #4423]
-
-Thu May 12 07:54:59 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* object.c (rb_obj_equal):  Add documentation.  Patch by Vincent Batts.
-	  [Ruby 1.9 - Bug #4664]
-	* lib/rexml:  ditto
-	* lib/mkmf.rb:  ditto
-	* ext/socket/lib/socket.rb:  ditto
-
-Thu May 12 07:30:08 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* Various .document files: Update .document files to match files which
-	  have documentation.
-
-Thu May 12 07:18:45 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_pkey_dsa.c: Use generic X.509 SubjectPublicKeyInfo
-	  format for PEM-encoding DSA public keys.
-	  [ruby-core:35328] [Bug #4422]
-
-Thu May 12 06:27:31 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
-
-	* ext/openssl/ossl_pkey_rsa.c: Use generic X.509 SubjectPublicKeyInfo
-	  format for encoding RSA public keys.
-	  [ruby-core:35327] [Bug #4421]
-
-Wed May 11 19:45:27 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/forwardable.rb: support 'delegate :foo => :bar' for to meet
-	  by specification of RDOC.
-
-Wed May 11 08:36:38 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/webrick: Add documentation for WEBrick::HTTPAuth
-
-Wed May 11 03:06:35 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rss.rb: Add documentation for RSS.  Patch by Steve Klabnik.
-	  [Ruby 1.9 - Bug #4663]
-
-Tue May 10 14:50:32 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb: Add option for hiding skip messages when test
-	  ends. #4657
-
-	* test/testunit/test_hideskip.rb, test/testunit/test4test_hideskip.rb:
-	  test for above.
-
-Tue May 10 10:53:04 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* common.mk (rdoc): Add rdoc-coverage rule
-
-Tue May 10 09:13:21 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/webrick: Add Documentation
-
-Tue May 10 04:22:09  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/webrick/log.rb: Hide copyright info from ri
-	* lib/webrick/httpstatus.rb: ditto
-	* lib/webrick/htmlutils.rb: ditto
-	* lib/webrick/httpversion.rb: ditto
-	* lib/webrick/version.rb: ditto
-	* lib/webrick/httpauth/userdb.rb: ditto
-	* lib/webrick/httpauth/authenticator.rb: ditto
-	* lib/webrick/accesslog.rb: ditto
-
-Mon May  9 20:57:13 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/ruby/test_{complex,rational}.rb: added tests.
-
-Mon May  9 20:29:44 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (string_to_c_internal): a refactoring.
-
-Mon May  9 18:33:05 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c: Improve documentation for String#start_with? and
-	  String#end_with?. fixes #4652
-	  patched by Andrew Grimm <andrew.j.grimm at gmail.com>
-
-Mon May  9 13:49:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* complex.c (string_to_c_internal): support scientific notation.
-	  patched by Tinco Andringa. https://github.com/ruby/ruby/pull/16
-	  [ruby-core:36046][Bug #4655]
-
-Mon May  9 11:52:48 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (int_ord): remove K&R style.
-	  patched by Daehyub Kim. https://github.com/ruby/ruby/pull/17
-
-Sun May  8 22:17:24 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/ruby/test_{complex2,complexrational}.rb: use skip.
-	* test/date/*.rb: ditto.
-
-Sun May  8 21:02:31 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/ruby/test_{complex2,complexrational}.rb: NEVER SKIP.
-
-Sun May  8 21:01:21 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/test_date_base.rb: fixed.
-
-Sun May  8 20:54:11 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/*.rb: NEVER SKIP.
-
-Sun May  8 20:37:33 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/*.rb: reverted 31432.
-
-Sun May  8 20:32:43 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/*.rb: reverted 31483.
-
-Sun May  8 19:39:16 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (native_cond_timedwait): add to care EINTR.
-	* thread_pthread.c (thread_timer): remove EINTR check.
-
-Sun May  8 19:04:15 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/time.rb (xmlschema): avoid passing any negative numbers.
-
-Sun May  8 18:40:03 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_{parse,strptime}.c: introduced some macros.
-
-Sun May  8 17:17:13 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/*.rb: use skip /w messages.
-
-Sun May  8 17:04:55 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/lib/date/format.rb (_httpdate): omitted to call zone_to_diff.
-
-Sun May  8 16:56:19 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (date_s_test_*): use macros.
-
-Sun May  8 10:24:16 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c: cleanup signal_thread_list related ifdef.
-	  1) we don't have to use #ifdef FOO-PLATFORM directly 2) About
-	  half #ifdef didn't care symbian properly.
-
-Sun May  8 05:19:37 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/io/wait/test_io_wait.rb: Linux socketpair(2) only support
-	  AF_UNIX, but windows socketpair doesn't support it. we can't
-	  avoid platform check. sigh!
-
-Sun May  8 00:13:05 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/io/wait/test_io_wait.rb: use Socket.pair instead of pipe.
-	  Windows can only treat a socket.
-
-Sat May  7 22:43:48 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_fd_zero): remove redundant zero fill.
-
-Sat May  7 22:38:04 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_fd_init): remove volatile qualifier.
-
-Sat May  7 22:34:29 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_fd_init_copy): new internal api. It provide efficient
-	  copy constructor semantics.
-	* thread.c (do_select): use rb_fd_init_copy().
-
-Sat May  7 15:18:06 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-	fix incorrect native_cond_signal call when deadlock was detected.
-
-	* thread.c (lock_func): decrement cond_waiting if timeout was happen.
-
-Sat May  7 18:28:37 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (USE_MONOTONIC_COND): check the availability
-	  more strictly.
-
-	* thread_pthread.h (rb_thread_cond_t): ditto.
-
-Sat May  7 15:15:10 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	fix win32 native_cond_timedwait() makes SIGSEGV.
-
-	* thread_win32.h (rb_thread_cond_struct): add prev field instead of
-	  last. (ie cond_event_entry is now using double linked list instead of
-	  single)
-	* thread_win32.c (cond_event_entry): add prev field.
-
-	* thread_win32.c (__cond_timedwait): remove entry properly if timeout
-	  was happen.
-
-	* thread_win32.c (native_cond_signal): change for double linked list.
-	* thread_win32.c (native_cond_broadcast): ditto.
-	* thread_win32.c (native_cond_initialize): ditto.
-
-Sat May  7 12:41:04 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-	fix mutex deadlock test hang-up.
-
-	* thread_win32.c (abs_timespec_to_timeout_ms): fix 1000x calculation
-	  mistake. (ie fix hang-up native_cond_timedwait())
-
-Sat May  7 03:14:13 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	sleep_cond use monotonic time if possible.
-
-	* thread_pthread.c (native_thread_init): change sleep_cond
-	  attribute to monotonic.
-	* thread_pthread.c (native_sleep): use native_cond_timeout().
-
-	* thread_pthread.c (native_cond_timeout): add overflow care.
-	* thread_win32.c (native_cond_timeout): ditto.
-
-Sat May  7 02:49:12 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-	  fix win32 compile error.
-
-	* thread_win32.c (RB_CONDATTR_CLOCK_MONOTONIC): define
-	  RB_CONDATTR_CLOCK_MONOTONIC always.
-	* thread_pthread.c (RB_CONDATTR_CLOCK_MONOTONIC): ditto.
-
-Sat May  7 02:29:41 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	  mutex: deadlock check timeout use monotonic time.
-
-	* thread_pthread.c (native_cond_timeout): new internal api.
-	  it calculate a proper time for argument of native_cond_timedwait().
-	* thread_win32.c (native_cond_timeout): ditto.
-
-	* thread_pthread.c (thread_timer): use native_cond_timeout()
-	  instead of get_ts.
-	* thread.c (lock_func): ditto.
-
-	* thread_pthread.c (get_ts): removed. use native_cond_timeout().
-	* thread.c (init_lock_timeout): ditto.
-
-Sat May  7 01:54:21 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (get_ts): add monotonic clock capability.
-	* thread_pthread.c (rb_thread_create_timer_thread): use monotonic
-	  clock if possible.
-
-Sat May  7 01:43:37 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.h (rb_thread_cond_t): add clockid field. it's
-	  no longer an alias of pthread_cond_t.
-	* thread_pthread.c: adapt new rb_thread_cond_t type.
-	* thread.c (mutex_alloc): ditto.
-	* thread_win32.c (native_cond_initialize): ditto.
-	* configure.in: add check for pthread_cond_attr_setclock() and
-	  clockid_t type.
-
-Fri May  6 23:29:47 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_wait_for_single_fd): use ppoll() instead of poll()
-	  if possible. based on a patch from Eric Wong. [ruby-core:36003].
-
-Fri May  6 23:13:43 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: remove nanosleep check. we no longer use it.
-	  r20124 removed last usage.
-
-Fri May  6 22:35:56 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/rubyext.c (mktime_do): extra digits are not used.
-
-Fri May  6 17:43:07 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/syck/rubyext.c (mktime_do): remove unused variable offset.
-
-	* ext/syck/syck.h: use #ifdef instead of #if DEBUG.
-
-Fri May  6 16:27:33 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/date/date_core.c (DAY_IN_NANOSECONDS): refix: 31438.
-	  check with LONG_MAX and cast as long; without this the calculation
-	  will be done as int and overflow.
-
-Fri May  6 15:01:11 2011  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* ext/syck/rubyext.c (mktime_do): avoid buffer overrun, by
-	  silently ignoring lesser significant digits.  Required buffer
-	  length can be computable so you might at first think of
-	  allocating enough memory space on the fly using alloca().  That
-	  is a wrong idea because when using alloca there is always risk
-	  of integer overflow.  A function that accepts outer-process
-	  resources like this should not blindly trust its inputs.  In
-	  this particular case we just want to generate milliseconds
-	  resolution by strtod() so the string in question needs no more
-	  length than what we originally have.  Ignoring lesser
-	  significant digits should suffice I believe.
-
-Fri May  6 14:25:53 2011  Tinco Andringa <mail@tinco.nl>
-
-	* ext/syck/rubyext.c (mktime_do): YAML.load time correctly parse
-	  usecs smaller than 1 fixes #4571
-
-Thu May  5 22:23:34 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (native_mutex_reinitialize_atfork): removed
-	  unused macro.
-	* thread_win32.c (native_mutex_reinitialize_atfork): ditto.
-
-Thu May  5 22:09:39 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/date/date_core.c (DAY_IN_NANOSECONDS): long long int is not
-	  available on all platforms.
-
-Thu May  5 17:36:31 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* eval.c (frame_func_id): store result of method_entry_of_iseq() to
-	  cfp->me because method_entry_of_iseq() might become expensive.
-
-Thu May  5 15:03:51 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* eval.c (frame_func_id): __method__ return different name from
-	  methods defined by Module#define_method with a same block.
-	  [ruby-core:35386] fixes #4606
-	* eval.c (method_entry_of_iseq): new helper function. search control
-	  frame stack for a method entry which has given iseq.
-	* test/ruby/test_method.rb: add tests for #4606
-
-Wed May  4 22:13:09 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* benchmark/bm_vm4_pipe.rb: Reduced iterations. Too slow benchmark
-	  is bad.
-	* benchmark/bm_vm4_thread_pass.rb: ditto.
-
-Wed May  4 22:08:22 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/date/test_date_base.rb: don't use no message skip().
-
-Wed May  4 21:11:28 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* benchmark/bm_io_select2.rb: reduce number of using file
-	  descriptors. because gdb need some fds.
-
-Wed May  4 19:00:59 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_wait_for_single_fd): Fix wrong return value.
-	* test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb
-	  (TestWaitForSingleFD#test_wait_for_closed_pipe): test for it.
-
-Wed May  4 18:46:39 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/-test-/wait_for_single_fd: New. for testing
-	  rb_wait_for_single_fd() internal function.
-	  The patch was written by Eric Wong. [ruby-core:35991]
-
-	* test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb: ditto.
-
-Wed May  4 12:46:25 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_wait_for_single_fd): Added POLLNVAL check.
-	  based on a patch from Eric Wong at [ruby-core:35991].
-
-Wed May  4 11:51:01 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_f_select): remove useless ifdef.
-
-Wed May  4 11:42:47 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/socket/init.c (wait_connectable): fix error handling code.
-	  RB_WAITFD_OUT is turned on even though an error occur.
-
-Wed May  4 10:12:39 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/readline/readline.c (readline_event): use rb_wait_for_single_fd().
-	The patch was written by Eric Wong. [Ruby 1.9 - Feature #4531]
-
-Wed May  4 10:10:28 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/socket/init.c (wait_connectable): use rb_wait_for_single_fd().
-	  The patch was written by Eric Wong. [Ruby 1.9 - Feature #4531]
-
-	* ext/socket/init.c (try_wait_connectable, wait_connectable_ensure):
-	  removed.
-
-Wed May  4 10:07:48 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/io/wait/wait.c (io_wait): use rb_wait_for_single_fd().
-	  The patch was written by Eric Wong. [Ruby 1.9 - Feature #4531]
-
-Wed May  4 10:01:27 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_wait_for_single_fd): new. poll(2) based backend for
-	  rb_wait_for_single_fd().
-	  Now only Linux uses it.
-
-	The patch was written by Eric Wong. [Ruby 1.9 - Feature #4531]
-
-Wed May  4 09:56:57 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_wait_for_single_fd): new.
-	* thread.c (select_single): select(2) based backend for
-	  rb_wait_for_single_fd().
-
-	* io.c (make_writeconv): use rb_wait_for_single_fd() instead of
-	  rb_thread_fd_select().
-	* io.c (rb_io_wait_readable): ditto.
-	* thread.c (rb_thread_wait_fd_rw): ditto.
-
-	* io.c (wait_readable): removed.
-	* thread.c (init_set_fd): new helper function.
-	* include/ruby/io.h (RB_WAITFD_IN, RB_WAITFD_PRI, RB_WAITFD_OUT):
-	  new constant for rb_single_wait_fd().
-
-	The patch was written by Eric Wong. [Ruby 1.9 - Feature #4531]
-
-Wed May  4 08:04:59 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: fix time dumping so that
-	  Syck can load UTC times that Psych dumps.
-
-Wed May  4 07:33:00 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_fd_copy): fix wrong argument.This issue was pointed
-	  out by Eric Wong. [ruby-core:35982]
-
-Tue May  3 20:29:33 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/fileutils/test_fileutils.rb (TestFileUtils#test_chmod_symbol_mode):
-	  Skip sticky bit test if the platform is FreeBSD. It doesn't allow to
-	  change sticky bit if a target is regular file.
-
-Tue May  3 18:23:57 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/date/test_date.rb (TestDate#test_coerce):
-	  test for [ruby-core:35127].
-
-Tue May  3 04:27:53 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_select): preserve errno if no error
-	  occurred.
-
-Tue May  3 03:57:04 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_w32_fdcopy): add prototype.  fixes
-	  #4640
-
-Mon May  2 01:02:04 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* lib/fileutils.rb (FileUtils#chmod): accept symbolic mode argument.
-	  The patch was written by takkanm. [ruby-core:26029][Feature #2190]
-
-	* lib/fileutils.rb (FileUtils#fu_mode): new helper function.
-	* lib/fileutils.rb (FileUtils#symbolic_modes_to_i): ditto.
-	* lib/fileutils.rb (FileUtils#mode_mask): ditto.
-	* lib/fileutils.rb (FileUtils#user_mask): ditto.
-
-	* test/fileutils/test_fileutils.rb (TestFileUtils#test_chmod_symbol_mode):
-	  new test for the above symbolic mode.
-	* test/fileutils/test_fileutils.rb (TestFileUtils#test_chmod_R): ditto.
-
-Mon May  2 00:36:12 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/socket/init.c (rsock_connect): add to care EINTR. based
-	  on a patch from Eric Wong at [ruby-core:35621][Bug #4555]
-
-Sun May  1 01:06:24 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_thread_select): release GVL while waiting select().
-
-Sat Apr 30 23:10:15 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/win32.c (rb_w32_fdcopy): New. This can copy even though
-	  fdset size exceed FD_SETSIZE.
-	* include/ruby/intern.h (rb_fd_copy): use rb_w32_fdcopy()
-
-Sat Apr 30 20:18:43 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (do_select): Change argument type to rb_fdset_t.
-	  Now do_select() is free from unexpected hangup if
-	  HAVE_RB_FD_INIT=1 [Bug #4636]
-
-	* thread.c (rb_thread_fd_select, rb_thread_wait_fd_rw):
-	  adapt new argument type.
-
-	* thread.c (rb_thread_select): make dummy implementation.
-
-Sat Apr 30 20:16:53 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_fd_copy): Change function argument. Now
-	  rb_fd_copy() has fully copy semantics.
-	* include/ruby/intern.h: ditto.
-
-Sat Apr 30 20:11:47 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* include/ruby/intern.h (rb_thread_select): mark as deprecated.
-
-	* ext/io/wait/wait.c (wait_readable): use rb_thread_fd_select
-	  instead of rb_thread_select.
-	* ext/socket/init.c (wait_connectable0): ditto.
-	* ext/readline/readline.c (readline_event): ditto.
-	* io.c (rb_io_wait_readable, wait_readable, rb_io_wait_writable,
-	  wait_writable): ditto.
-
-Sat Apr 30 20:06:36 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (do_select): remove useless ifdef. time calculation
-	  is not heavy weight.
-
-Sat Apr 30 16:48:36 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* benchmark/bm_io_select3.rb: New.
-
-Sat Apr 30 16:27:09 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (copy_stream_body, rb_io_s_copy_stream): move rb_fd_init()
-	  from copy_stream_body to rb_io_s_copy_stream. fds of passing
-	  rb_fd_term() have to be guaranteed initialized.
-
-Sat Apr 30 16:13:17 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* benchmark/bm_io_select.rb, benchmark/bm_io_select2.rb: New.
-	  based on a patch from Eric Wong at [Feature #4531]
-
-Sat Apr 30 03:25:53 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/io/wait/test_io_wait.rb: New. for testing ext/io/wait.
-	  the patch was written by Eric Wong. [Feature #4531]
-
-Sat Apr 30 00:34:56 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* include/ruby/win32.h: remove redundant declaration of
-	  rb_w32_time_subtract().
-
-Sat Apr 30 00:16:40 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (gvl_init): fix hangup if GVL_SIMPLE_LOCK=1.
-	  We don't have to call mutex_unlock() before initialize it!
-
-Fri Apr 29 13:15:15 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_win32.c (native_cond_timedwait): New. r31373 caused
-	  win32 build failure.
-
-	* thread_win32.c (__cond_timedwait, abs_timespec_to_timeout_ms):
-	  New helper functions.
-
-	* win32/win32.c (rb_w32_time_subtract): rename from subtract and
-	  remove static.
-
-Fri Apr 29 10:43:09 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* benchmark/bm_vm4_pipe.rb: Add two new benchmark for GVL
-	  performance. They was written by Koichi Sasada.
-	* benchmark/bm_vm4_thread_pass.rb: ditto.
-
-Fri Apr 29 10:25:31 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* vm_method.c (rb_clear_cache_by_class): Revert r29673. It made
-	  a segmentation fault regression. [Bug #4289][ruby-core:34554].
-
-Fri Apr 29 10:24:51 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (make_writeconv): do not add textmode newline decorator if any
-	  newline decorator is set already.  fixes #4618, fixes #4619
-
-Fri Apr 29 10:17:42 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (lock_func): small cleanup.
-
-Fri Apr 29 10:07:13 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_mutex_lock, lock_func): Avoid busy loop and
-	  performance regression. bm_vm3_thread_mutex.rb performance
-	  change from 109.064sec to 16.331sec. [Feature #4607]
-
-	* thread.c (init_lock_timeout): New helper function.
-
-Thu Apr 28 16:15:49 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/{win32.c,dir.h} (rb_w32_uopendir): new API to pass UTF-8 path.
-
-	* win32/win32.c (opendir_internal, rb_w32_opendir): extract and merge
-	  common part of rb_w32_opendir() and rb_w32_uopendir().
-
-	* dir.c (do_opendir, glob_helper): encoding.
-
-	* dir.c (dir_initialize, do_opendir): convert path to UTF-8 and call
-	  rb_w32_uopendir() instead of rb_w32_opendir() on Windows.
-	  fixes #4491, reported by Joey Zhou.
-
-Thu Apr 28 15:32:53 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/dl/test_base.rb (DL::LIBC_SO): its always msvc*.dll on
-	  mswin/mingw.
-
-Thu Apr 28 06:07:06 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/csv.rb (CSV::open): suppress universal newline decorator.
-	  fixes #4603
-
-	* lib/csv.rb (CSV.read): no mode is needed.
-
-Thu Apr 28 06:06:56 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_extract_modeenc, rb_f_backquote): set default text
-	  mode.  fixes #4619
-
-	* io.c (pipe_open): set universal newline decorator if needed.
-
-Wed Apr 27 11:33:08 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/emoji_iso2022_kddi.trans: ISO-2022-JP-KDDI doesn't have
-	  CP932 UDA. Another reason is emacs-mule: the implementation of
-	  stateless-iso-2022-jp doesn't support beyond 94x94 (0x7fxx);
-	  but CP932 UDA is in 7Fxx-92xx.
-
-Wed Apr 27 07:42:44 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (STRIP): use proper toolchain.  based on a patch
-	  from Jon Forums at [ruby-core:35909].  fixes #4617
-
-Wed Apr 27 01:20:59 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (date_zone_to_diff): renamed.
-	* ext/date/date_parse.c: ditto.
-	* ext/date/date_strptime.c: ditto.
-
-Wed Apr 27 01:16:59 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_find): accept Encoding objects.
-
-Wed Apr 27 00:55:56 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (econv_opts): add newline option.
-
-	* io.c (validate_enc_binmode, rb_io_extract_modeenc): set newline
-	  decorator according to open mode.
-
-	* transcode.c (rb_econv_prepare_options): new function, to prepare
-	  econv options with newline flags.
-
-	* include/ruby/encoding.h (ECONV_NEWLINE_DECORATOR_MASK): add.
-
-Wed Apr 27 00:51:01 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_truncate): fix function.
-
-	* include/ruby/win32.h (ftruncate, truncate, ftello, fseeko): non-64
-	  versions on mingw are useless because they use int32_t.  fixes #4564
-
-Wed Apr 27 00:50:33 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: modified validation methods.
-	* ext/date/lib/date.rb: ditto.
-
-Wed Apr 27 00:00:37 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (dt_lite_set_tmx): should get df value.
-
-Tue Apr 26 22:34:04 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/lib/date/format.rb (_iso8601): allowed day only civil
-	  date.  disallowed separatorless day only ordinal date.
-
-Mon Apr 25 21:31:36 2011  Nobuhiro Iwamatsu  <iwamatsu@nigauri.org>
-
-	* ext/openssl/extconf.rb: Should check SSLv2_*method.
-	  openssl compiled with "no-ssl2" the extconf don't fail
-	  when running `make' having this compilation errors.
-	  Patched by Laurent Arnoud. fixes #4562, #4556
-
-Mon Apr 25 20:53:32 2011  Tajima, Akio <artonx@yahoo.co.jp>
-
-	* win32/win32.c (kill): accept 0 only sig is SIGINT #4596
-
-Mon Apr 25 19:59:47 2011  Tajima, Akio <artonx@yahoo.co.jp>
-
-	* win32/win32.c (kill): accept 0 as pid, fixes #4596
-
-Mon Apr 25 16:43:45 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* random.c (random_rand): remove unused variables.
-
-	* struct.c (rb_struct_define_without_accessor): ditto.
-
-	* strftime.c (rb_strftime_with_timespec): ditto.
-
-	* sprintf.c: ditto.
-
-	* time.c (time_asctime): remove useless GetTimeval().
-
-	* thread_pthread.c: cast to (void *) for %p.
-
-Mon Apr 25 11:02:11 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/ripper/lib/ripper/sexp.rb: fix rdoc around sexp.
-	  patched by Sho Hashimoto. fixes #4599
-
-Mon Apr 25 08:24:04 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* random.c (rb_f_rand, random_s_rand): RDocs for them.
-
-Mon Apr 25 07:18:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* random.c (random_s_rand, Init_Random): Random.rand should behave as
-	  Random::DEFAULT.rand rather than Kernel#rand.
-
-	* random.c (rand_range, random_rand): rand_range function extracted
-	  from random_rand function.
-
-	* random.c (rb_f_rand): accept a Range argument as Random#rand
-	  [ruby-dev:43427] #4605
-
-Mon Apr 25 03:31:06 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/time.rb: require 'date'.
-	* ext/date/lib/date/format.rb: removed require line.
-
-Mon Apr 25 03:08:39 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/lib/date/format.rb: require 'date'.
-
-Mon Apr 25 03:04:16 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/lib/date/format.rb (_iso8601): added a pattern.
-
-Mon Apr 25 02:51:22 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/date/lib/date/format.rb: require 'date_core.so'.
-	  date/format needs methods which are now in date_core.so.
-	  This breaks make rdoc which uses Date._parse from time.rb.
-
-Mon Apr 25 02:47:46 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/lib/date/format.rb (_iso8601): fixed a bug of regex.
-
-Mon Apr 25 02:12:26 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/lib/date/format.rb: an adjustment of regex.
-
-Mon Apr 25 01:58:50 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/lib/date/format.rb: omitted to call _parse.
-
-Mon Apr 25 01:03:03 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* string.c (rb_to_id): remove unused variable.
-
-Sun Apr 24 22:19:05 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c, rational.c: omitted some method calls.
-
-Sun Apr 24 02:57:27 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_parse.c (n2i): takes long.
-
-Sun Apr 24 02:51:06 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_parse.c: reverted.
-
-Sun Apr 24 02:25:23 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/intern.h: pcc can't use __builtin_constant_p.
-
-	* vm_exec.c: change condition.
-
-Sun Apr 24 01:58:01 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/date/date_core.c (leap_p): suppress warning: parentheses.
-
-	* ext/date/date_core.c (date_s__parse_internal): remove unused
-	  variable "str".
-
-	* ext/date/date_parse.c (parse_ddd_cb): use RSTRING_LENINT.
-
-	* ext/date/date_strftime.c (date_strftime_with_tmx): remove unused
-	  variable.
-
-Sun Apr 24 00:34:23 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_parse.c: removed some unused macros.  use strchr()
-	  instead of index().
-
-Sat Apr 23 21:29:42 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: replacement of implementation of
-	  _parse.  [experimental]
-	* ext/date/date_parse.c: new.
-	* ext/date/lib/date/format.rb: removed ruby version of _parse.
-
-Fri Apr 22 12:04:15 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): fix rdoc.
-	  patched by burningTyger. https://github.com/ruby/ruby/pull/11
-
-Fri Apr 22 11:49:49 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/xmlrpc/create.rb (XMLRPC::Create#conv2value):
-	  XML-RPC's int is 32bit int, and Fixnum also may be beyond 32bit.
-
-	* lib/xmlrpc/create.rb (XMLRPC::Create#conv2value):
-	  XML-RPC doesn't allow Infinity and NaN.
-	  http://www.xmlrpc.com/spec
-
-Fri Apr 22 04:16:14 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/parser.c (parse): strings from psych have proper taint
-	  markings.
-
-	* test/psych/test_tainted.rb: test for string taint
-
-Thu Apr 21 01:30:02 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* random.c (rb_f_srand): fix rdoc: srand(0)'s 0 is a seed.
-	  [ruby-core:35833] fixes #4590
-
-Thu Apr 21 01:01:28 2011  Masaya Tarui  <tarui@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): maximum length of lpCommandLine is
-	  32,768 characters, including the Unicode terminating null character.
-
-Wed Apr 20 21:32:11 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_strptime.c (date__strptime_internal): do not
-	  overwrite local variables.
-
-Wed Apr 20 14:41:28 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_each_line): check string's length when compare
-	  separator and string. [ruby-core:35815] fixes #4586
-
-Wed Apr 20 00:02:13 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-parse-partial): use position of open paren.
-
-Tue Apr 19 01:00:21 2011  Tajima Akio <artonx@yahoo.co.jp>
-
-	* test/ruby/test_io.rb (TestIO#test_cross_thread_close_fd):
-	  skip cross thread pipe close if windows
-
-Mon Apr 18 12:15:46 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_range.rb (TestRange#test_step_ruby_core_35753):
-	  avoid float error. [ruby-core:35804]
-
-Sun Apr 17 00:20:14 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_{core,strftime}.c: use struct tmx instead of vtm.
-	* ext/date/date_tmx.h: new.
-
-Sat Apr 16 22:23:52 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_strftime.c (date_strftime_wo_timespec): changed
-	  the way of validation of locale modifiers.
-
-Sat Apr 16 21:55:12 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: replacement of implementation of
-	  _strptime.  [experimental]
-	* ext/date/date_strptime.c: new.
-	* ext/date/lib/date/format.rb: removed ruby version of _strptime.
-
-Sat Apr 16 10:18:30 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* vm.c (Init_VM): suppress warning: "OPT_BASIC_OPERATIONS" is not
-	  defined.
-
-Fri Apr 15 23:41:18 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ruby.c (proc_options): suppress warning:
-	  "ALLOW_DEFAULT_SOURCE_ENCODING" is not defined.
-
-Fri Apr 15 15:10:29 2011  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/uri/generic.rb (#route_from_path): Fix a bug where
-	  URI('http://h/b/').route_to('http://h/b') wrongly returned './'
-	  (should be '../b'). [Bug #4476]
-
-Fri Apr 15 14:58:06 2011  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/fileutils.rb (FileUtils#touch): Fix corrupted output when
-	  mtime is specified in addition to nocreate (and verbose).
-	  ref [ruby-dev:43401]
-
-Thu Apr 14 23:43:43 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (ruby_float_step): wrong loop condition.
-	  fixes [ruby-core:35753], reported by Joey Zhou.
-
-	* test/ruby/test_range.rb (TestRange#test_step_ruby_core_35753):
-	  test above change.
-
-Thu Apr 14 22:48:12 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit::Options#setup_options): set possible
-	  values for completion. no conversion is needed.
-
-	* lib/test/unit.rb (Test::Unit::Runner::Worker#initialize): use
-	  positional arguments instead of keyword arguments.
-
-	* lib/test/unit.rb (Test::Unit::Runner#jobs_status): io/console may
-	  not be available. use 80 as the last resort if IO#winsize and
-	  COLUMNS are unavailable.
-
-	* lib/test/unit.rb (Test::Unit::Runner::Worker#died): rename using a
-	  verb.
-
-	* lib/test/unit.rb (Test::Unit::Runner#_run_parallel): check if worker
-	  is signaled and use its exit status.
-
-	* lib/test/unit.rb (Test::Unit::Runner::Worker#dead): no longer @in
-	  and @out are separated.
-
-Thu Apr 14 21:23:29 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_autoload_p): search superclasses as same as actual
-	  loading.  fixes [ruby-core:35679]
-
-Thu Apr 14 21:21:06 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h (frexp, modf): wrongly declared as pure in
-	  mingw math.h.
-
-	* include/ruby/win32.h (ftruncate, truncate): mingw64 misses
-	  prototypes.
-
-	* win32/win32.c (rb_w32_read): suppress warning.
-
-Thu Apr 14 19:55:54 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* lib/fileutils.rb (FileUtils#touch): fix corrupted output when
-	  FileUtils.touch(:nocreate => true, :verbose => true) case.
-	  The patch was written by Hiroyuki Iwatsuki. [ruby-dev:43401]
-
-Thu Apr 14 16:01:45 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* io.c (rb_f_syscall): suppress warning: "HAVE___SYSCALL" is not
-	  defined.
-
-Thu Apr 14 00:41:09 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* thread.c (thread_fd_close_i): IOError exception should be assigned
-	  to rb_thread_t::thrown_errinfo.
-
-Wed Apr 13 20:12:26 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* io.c (rb_io_fdatasync): remove unused variable.
-
-Tue Apr 12 20:54:12 2011  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/st.h: parenthesize macro arguments.
-
-Tue Apr 12 19:19:50 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb: avoid race condition. fixes #4572
-
-Tue Apr 12 18:07:13 2011  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/extconf.rb: --disable-libedit to disable
-	  libedit. fixes #4550
-
-Tue Apr 12 10:37:39 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h: VC doesn't have ftruncate() and others, but
-	  ruby needs HAVE_ macros to use our emulation functions.
-	  (fix the problem of 31262)
-
-Tue Apr 12 01:33:00 2011  Luis Lavena  <luislavena@gmail.com>
-
-	* configure.in: properly evaluate existence of truncate, ftruncate
-	  and ftello for MinGW. [ruby-core:35678]
-	* win32/win32.c: rename truncate, ftruncate and ftello to avoid
-	  redefinitions.
-	* win32/win32.h: ditto.
-
-Mon Apr 11 21:51:52 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c: revert r31230. Because it made a regression.
-	  [ruby-core:35631]
-
-Mon Apr 11 21:49:18 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_io.rb: Added TestIO#test_cross_thread_close_stdio
-	  and TestIO#test_cross_thread_close_fd.
-	  The patch was written by Eric Wong. [ruby-core:35669]
-
-Mon Apr 11 21:15:54 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* file.c (rb_group_member): kill 256K of stack usage.
-	  the patch was written by Eric Wong. [ruby-core:35699]
-
-Mon Apr 11 07:24:13 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/openssl/ossl.c:  Fix typo, document version constants.
-
-Sun Apr 10 22:23:45 2011  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h: parenthesize macro arguments.
-
-Sat Apr  9 23:31:47 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* ext/stringio/stringio.c (strio_each, strio_readlines):
-	  Use `NUM2LONG` instead of `FIX2INT`. Fixes [ruby-dev:43395].
-
-Sat Apr  9 23:22:27 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* ext/stringio/stringio.c (strio_each):
-	  Fix exception message and don't raise immediately if block is not
-	  given.
-	  Fixes [ruby-dev:43394].
-
-	* test/stringio/test_stringio.rb (test_each_line_limit_0):
-	  Fix test for above.
-
-Sat Apr  9 21:54:15 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* ext/stringio/stringio.c (strio_each, strio_readlines):
-	  limit must not be zero. Fixes [ruby-dev:43392].
-
-	* test/stringio/test_stringio.rb: Add tests for above.
-
-Sat Apr  9 18:01:36 2011  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/util.h: parenthesize macro arguments.
-
-Fri Apr  8 16:01:56 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_getline): check whether str is
-	  a string when str and lim are given.
-	  https://twitter.com/watson1978/status/56225052152168449
-
-Thu Apr  7 20:03:52 2011  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h: parenthesize macro arguments.
-
-Wed Apr  6 21:08:31 2011  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h: parenthesize macro arguments.
-
-Wed Apr  6 15:12:40 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/ossl_pkey_dh.c (ossl_dh_initialize):
-	  pop pushed error after each try of reading. fixes #4550
-
-	* ext/openssl/ossl_pkey_dsa.c (ossl_dsa_initialize): ditto.
-
-	* ext/openssl/ossl_pkey_ec.c (ossl_ec_initialize): ditto.
-
-Wed Apr  6 11:36:44 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/ossl_pkey_rsa.c (ossl_rsa_initialize):
-	  pop pushed error after each try of reading. fixes #4550
-
-Tue Apr  5 20:33:43 2011  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h: parenthesize macro arguments.
-
-Mon Apr  4 22:02:16 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/io/nonblock/nonblock.c (io_nonblock_set): Avoid F_SETFL if
-	  we're not changing the O_NONBLOCK bit. F_SETFL is an expensive
-	  operation since it needs to affect all processes with the same
-	  file object.
-	  The patch is written by Eric Wong. [ruby-core:35556]
-
-Mon Apr  4 21:41:26 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_io_syswrite): While local FS writes are usually
-	  buffered, the buffers can be full or the file opened with
-	  O_SYNC. IO#syswrite can also be used on blocking IOs
-	  (pipe/socket) just like IO#write.
-	  The patch is written by Eric Wong. [ruby-core:35554]
-
-Mon Apr  4 11:50:40 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/test_tempfile.rb: simply ignore platform dependent testcases
-	  instead of skipping.
-
-Sun Apr  3 22:52:22 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* ext/syslog/syslog.c: improve rdoc.
-	  a patch by Jonas Pfenniger. [ruby-core:35592] fixes #4545
-
-Sun Apr  3 22:10:09 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/zlib/zlib.c: parenthesize macro arguments.
-
-Sun Apr  3 21:33:58 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: disable fdatasync again on Mac OS X.
-	  [ruby-core:35493][Bug #4500]
-
-Sun Apr  3 21:16:20 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (io_reopen): IO#close releases GVL if possible.
-	  close() may block for certain file types (NFS, SO_LINGER
-	  sockets, inotify), so let other threads run. The patch was
-	  created by Eric Wong [ruby-core:35555][Bug #4527]
-
-	* io.c (fptr_finalize): ditto.
-
-	* io.c (maygvl_fclose): new.
-	* io.c (nogvl_fclose): ditto.
-	* io.c (maygvl_close): ditto.
-	* io.c (nogvl_close): ditto.
-
-Fri Apr  1 22:25:50 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/syslog/syslog.c: parenthesize macro arguments.
-
-Fri Apr 1 18:53:06 2011  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/webrick/cookie.rb (WEBrick::Cookie.parse): 'white space is
-	  permitted between tokens' according to RFC2965. Though 'Netscape
-	  spec' does not define the syntax clearly, make it tolerant as a
-	  server. As a real-world example, rest-client gem sends
-	  'Cookie: foo=1;bar=2'
-
-	* test/webrick/test_cookie.rb (test_parse_non_whitespace): test it.
-
-Fri Apr  1 13:19:20 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (RUBY_VM_CHECK_INTS_TH): merge a patch by ko1
-	  in [ruby-dev:43373].
-
-Thu Mar 31 23:15:46 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-brace-to-do-end, ruby-do-end-to-brace):
-	  adjust space between block beginning and block arguments
-
-Thu Mar 31 20:42:05 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/strscan/strscan.c:  parenthesize macro arguments.
-
-Thu Mar 31 18:06:12 2011  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_get_ev_const): should ignore crefs with
-	  the NODE_FL_CREF_PUSHED_BY_EVAL flag.
-
-Thu Mar 31 16:49:56 2011  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_get_ev_const): search root cref properly.
-	  [ruby-dev:43365]
-
-Thu Mar 31 14:50:25 2011  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* eval.c (rb_mod_s_constants): should ignore crefs with
-	  the NODE_FL_CREF_PUSHED_BY_EVAL flag.
-
-Wed Mar 30 22:55:47 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-toggle-block): toggle do/end and {}.
-
-	* misc/ruby-mode.el (ruby-move-to-block): move to opening of
-	  block.
-
-Wed Mar 30 14:35:15 2011  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_insnhelper.h (COPY_CREF): should copy
-	  the NODE_FL_CREF_PUSHED_BY_EVAL flag to hide constants from
-	  methods defined by class_eval.  [ruby-dev:43365]
-
-Wed Mar 30 00:24:53 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/stringio/stringio.c: parenthesize macro arguments.
-
-Tue Mar 29 21:51:31 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* object.c (rb_String): Kernel#String should call to_str before to_s.
-
-Tue Mar 29 10:28:08 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/webrick/test_filehandler.rb
-	  (WEBrick::TestFileHandler#test_short_filename): the cgi doesn't exist
-	  on current directory.
-
-Tue Mar 29 05:19:57 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c: parenthesize macro arguments.
-
-Tue Mar 29 00:03:51 2011 Tajima Akio <artonx@yahoo.co.jp>
-
-	* test/webrick/test_filehandler.rb (test_short_filename):
-	  read real short filename by cmd because smb mounted files
-	  have different naming convention.
-
-Mon Mar 28 11:38:08 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/date/date_core.c (date_s_today): use int for year.
-
-	* ext/date/date_core.c (datetime_s_now): ditto.
-
-Mon Mar 28 11:07:41 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/extmk.rb: set MFLAGS from MAKEFLAGS when using nmake.
-
-Mon Mar 28 11:07:00 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (love): all you need is love.
-
-Sun Mar 27 23:16:31 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ipsocket.c: parenthesize macro arguments.
-
-Sun Mar 27 16:55:34 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode-map): remove unnecessary
-	  binding. fixes
-	  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=468952
-
-	* misc/ruby-mode.el: suppress warnings at byte compile.  fixes
-	  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=502926
-
-Sun Mar 27 11:18:35 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: removed unused variables.
-
-Sat Mar 26 15:16:09 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/getaddrinfo.c: parenthesize macro arguments.
-
-Sat Mar 26 05:27:34 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/date/lib/date/format.rb (DateTime#strftime): removed because
-	  date_core defines it.
-
-Fri Mar 25 21:59:45 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: should not force cast with macros.
-
-Fri Mar 25 21:56:10 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/sdbm/init.c: parenthesize macro arguments.
-
-Fri Mar 25 19:39:40 2011  Ben Walton <bwalton@artsci.utoronto.ca>
-
-	* test/test_syslog.rb:
-	  Skip syslog tests that rely on LOG_PERROR unless it's defined
-
-	  Instead of checking looking at the platform to determine if the tests
-	  relying on LOG_PERROR should be run, look for the definition of the
-	  constant as this will be robust against all platforms as long as the
-	  underlying syslog.c code sets it up correctly.
-
-	  This specifically addresses failures on Solaris 9.
-
-	  Use LOG_PID instead of LOG_PERROR in Syslog.open test
-
-	  LOG_PERROR isn't a POSIX option for syslog, so it fails on platforms
-	  that don't define it.  Solaris 9 and 10 are examples of this.
-
-	  Use LOG_PID instead.
-
-Fri Mar 25 15:42:17 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/sdbm/_sdbm.c (sdbm_open): use size_t.
-
-	* ext/syck/bytecode.c: ditto.
-
-	* ext/sdbm/_sdbm.c (delpair): use ptrdiff_t.
-
-	* ext/sdbm/init.c: use RSTRING_LENINT.
-
-	* ext/dl/handle.c: suppress warning: shorten-64-to-32.
-
-	* ext/strscan/strscan.c: ditto.
-
-	* ext/syck/emitter.c: ditto.
-
-	* ext/syck/implicit.c: ditto.
-
-	* ext/syck/syck.c: ditto.
-
-	* ext/syck/token.c: ditto.
-
-Fri Mar 25 12:14:58 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: import nkf 7f18e30.
-
-Fri Mar 25 11:49:29 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_process.rb (TestProcess#test_no_curdir): skip silently
-	  on Windows, because this tests a platform specific feature and it'll
-	  never be supported on ruby on Windows.
-
-	* test/ruby/test_dir_m17n.rb
-	  (TestDir_M17N#test_filename_extutf8_invalid,
-	  TestDir_M17N#test_filename_as_bytes_extutf8): ditto.
-
-	* test/open-uri/test_open-uri.rb
-	  (TestOpenURI#test_find_proxy_case_sensitive_env): ditto.
-
-	* test/dl/test_handle.rb (DL::TestHandle#test_NEXT,
-	  DL::TestHandle#test_DEFAULT): ditto.
-
-Thu Mar 24 23:06:29 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_get_ev_const): should not autoload in
-	  defined? mode.
-
-	* variable.c (rb_const_defined_0): fix autoloading base.
-	  [ruby-core:35509]
-
-Thu Mar 24 22:48:43 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/sdbm/_sdbm.c: parenthesize macro arguments.
-
-Thu Mar 24 14:45:57 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/ossl.c: suppress warning: shorten-64-to-32.
-
-	* ext/openssl/ossl.h: ditto.
-
-	* ext/openssl/ossl_asn1.c: ditto.
-
-	* ext/openssl/ossl_bio.c: ditto.
-
-	* ext/openssl/ossl_bn.c: ditto.
-
-	* ext/openssl/ossl_cipher.c: ditto.
-
-	* ext/openssl/ossl_hmac.c: ditto.
-
-	* ext/openssl/ossl_ns_spki.c: ditto.
-
-	* ext/openssl/ossl_ocsp.c: ditto.
-
-	* ext/openssl/ossl_pkcs5.c: ditto.
-
-	* ext/openssl/ossl_pkey.c: ditto.
-
-	* ext/openssl/ossl_pkey_dh.c: ditto.
-
-	* ext/openssl/ossl_pkey_dsa.c: ditto.
-
-	* ext/openssl/ossl_pkey_ec.c: ditto.
-
-	* ext/openssl/ossl_pkey_rsa.c: ditto.
-
-	* ext/openssl/ossl_rand.c: ditto.
-
-	* ext/openssl/ossl_ssl.c: ditto.
-
-	* ext/openssl/ossl_x509ext.c: ditto.
-
-	* ext/openssl/ossl_x509name.c: ditto.
-
-Thu Mar 24 11:48:19 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/ossl_rand.c (ossl_rand_egd_bytes): use NUM2INT because
-	  the result is used with functions whose argument is int.
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_setup): ditto.
-
-	* ext/openssl/ossl_x509store.c (ossl_x509store_set_purpose): ditto.
-
-	* ext/openssl/ossl_x509store.c (ossl_x509store_set_trust): ditto.
-
-	* ext/openssl/ossl_x509store.c (ossl_x509stctx_set_purpose): ditto.
-
-	* ext/openssl/ossl_x509store.c (ossl_x509stctx_set_trust): ditto.
-
-Thu Mar 24 11:36:55 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/ossl_x509name.c: id_aref's type is ID.
-
-Thu Mar 24 10:04:35 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/io/console/console.c (console_set_winsize):
-	  suppress warning: shorten-64-to-32.
-
-Thu Mar 24 09:56:19 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspreq_verify): flags is VALUE,
-	  so it should use NUM2INT.
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspbres_verify): ditto.
-
-Wed Mar 23 21:09:29 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/readline/readline.c: parenthesize macro arguments.
-
-Wed Mar 23 08:07:33 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_round): fix inaccurate results.
-
-Wed Mar 23 00:12:16 2011  Tajima Akio <artonx@yahoo.co.jp>
-
-	* win32/win32.c: wait process real termination after reading
-	  exit code. fixes #4518
-
-Tue Mar 22 21:20:10 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rubygems/test_case.rb: save current dir to @current_dir
-	  before Dir.chdir.
-
-Tue Mar 22 20:10:04 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/psych/parser.c: parenthesize macro arguments.
-
-Tue Mar 22 20:10:01 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ruby_missing.h: parenthesize macro arguments.
-
-Tue Mar 22 13:33:22 2011  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* ext/openssl/lib/openssl/buffering.rb: removed circular require of
-	  openssl.rb.
-
-	* ext/openssl/lib/openssl/*: removed following comment for transition
-	  measures of avoiding circular require. No one claimed about this as
-	  far as I know.
-	  ##
-	  # Should we care what if somebody require this file directly?
-	  # require "openssl"
-
-Tue Mar 22 10:57:36 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/runner.rb: set Gem::TestCase's @@project_dir.
-
-	* lib/rubygems/test_case.rb: set Gem::TestCase's @@project_dir only
-	  when it is not defined.
-
-Tue Mar 22 09:38:19 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (flo_round): use pow instead of while-loop. fixes #4510
-	  patched by Alex Young [ruby-core:35526]
-
-Tue Mar 22 06:47:46 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/date/date_strftime.c (date_strftime_wo_timespec):
-	  suppress warning: shorten-64-to-32.
-
-Tue Mar 22 06:42:42 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/date/date_core.c: suppress warning: shorten-64-to-32.
-
-Tue Mar 22 06:41:37 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/test/unit/parallel.rb: remove unused variable.
-
-Tue Mar 22 06:19:42 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_16le.c: suppress warning: shorten-64-to-32.
-
-	* ext/dbm/dbm.c: ditto.
-
-	* ext/gdbm/gdbm.c: ditto.
-
-	* parse.y (Init_ripper): suppress warning: unused value.
-
-Mon Mar 21 11:21:32 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb: Refactoring. Unified if and elsif.
-
-Sun Mar 20 23:09:34 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_strftime.c: checks duplicated modifiers.
-
-Sun Mar 20 22:32:30 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_strftime.c: removed unused code and arguments.
-
-Sun Mar 20 21:34:49 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: replacement of implementation of
-	  strftime. It has some limitations that is same as Time's
-	  one.  [experimental]
-	* ext/date/date_strftime.c: new.
-	* ext/date/lib/date/format.rb: removed ruby version of strftime.
-
-Sun Mar 20 12:43:12 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509store.c: parenthesize macro arguments.
-
-Sun Mar 20 01:39:48 2011  Tajima Akio <artonx@yahoo.co.jp>
-
-	* hash.c (ruby_setenv): check env process block size with OS ver.
-	* win32/win32.c: export rb_w32_osver for above patch.
-	* include/ruby/win32.h: declare rb_w32_osver for Win32 Libs.
-
-Sat Mar 19 18:35:05 2011  Tajima Akio <artonx@yahoo.co.jp>
-
-	* hash.c (ruby_setenv): calculate total env block size for win32.
-	* test/ruby/test_env.rb: add test for above patch.
-
-Sat Mar 19 17:14:46 2011  Tajima Akio <artonx@yahoo.co.jp>
-
-	* hash.c (ruby_setenv): checking with max process environment
-	  block size for Win32. 32767 for 2000/XP, 2003. if failed to
-	  read the block, then checking with 5120 for earlier Windows.
-
-Sat Mar 19 12:30:25 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509revoked.c: parenthesize macro arguments.
-
-Fri Mar 18 20:44:36 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509req.c: parenthesize macro arguments.
-
-Fri Mar 18 08:48:06 2011  Oleg Shaldybin  <oleg.shaldybin@gmail.com>
-
-	* lib/fileutils.rb (FileUtils::Entry_#copy_file): updated FileUtils.cp
-	  to still copy file permissions when :preserve is false (as cp does
-	  this even when -p isn't set).
-
-Fri Mar 18 00:59:38 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/win32ole/extconf.rb (create_docfile): removed.  should not
-	  modify source directory unnecessarily, platform dependent
-	  documentation should be dealt with by rdoc.  [ruby-core:35495]
-
-Fri Mar 18 00:54:20 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_funcall_passing_block): add prototype.
-	  a patch by James M. Lawrence at [ruby-core:35501]
-
-Wed Mar 17 06:23:31 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509name.c: parenthesize macro arguments.
-
-Wed Mar 16 20:36:56 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ipsocket.c (init_inetsock_internal): raise an error on
-	  listen(2) failure.
-	  reported by Xavier Shay.  [ruby-core:35505]
-
-Wed Mar 16 15:06:21 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/openssl/lib/openssl/buffering.rb (module OpenSSL): #flush should
-	  not change sync mode on exception.
-	* test/openssl/test_buffering.rb: added
-
-Wed Mar 16 13:45:28 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/openssl/lib/openssl/buffering.rb: de-nest Buffering module
-
-	* ext/openssl/lib/openssl/buffering.rb: add RDoc
-
-Wed Mar 16 08:40:39 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509ext.c: parenthesize macro arguments.
-
-Tue Mar 15 18:34:27 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509crl.c: parenthesize macro arguments.
-
-Tue Mar 15 09:49:03 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/misc/test_ruby_mode.rb (test_singleton_class): Skip for Pending.
-
-Mon Mar 14 21:20:44 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* test/ruby/test_require.rb (test_require_too_long_filename):
-	  increase path length, because MAXPATHLEN is defined as 4096 on linux.
-
-	* test/ruby/test_require.rb (test_require_path_home_1): ditto.
-
-	* test/ruby/test_require.rb (test_require_path_home_2): ditto.
-
-Mon Mar 14 19:54:37 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509cert.c: parenthesize macro arguments.
-
-Sun Mar 13 18:11:28 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509attr.c: parenthesize macro arguments.
-
-Sun Mar 13 16:07:58 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/pstore.rb: Fix don't raise "nested transaction" when thread_safe
-	  is true. Patch by Masaki Matsushita (Glass_saga). [ruby-dev:43337]
-
-	* test/test_pstore.rb: Test for above.
-	  Patch by Masaki Matsushita (Glass_saga) [ruby-dev:43337]
-
-Sat Mar 12 04:12:41 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_ssl_session.c: parenthesize macro arguments.
-
-Sat Mar 12 02:27:07 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c ({d,dt}_lite_marshal_load): checks the given
-	  argument.
-
-Sat Mar 12 01:26:24 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: changed some directives.
-
-Sat Mar 12 01:16:02 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c, ext/date/lib/*: moved rdoc descriptions.
-
-Sat Mar 12 00:06:24 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/lib: moved from lib.
-
-Fri Mar 11 23:32:38 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/delta*: removed undocumented delta.
-
-Fri Mar 11 18:42:43 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (find_executable0): should exclude directories.
-
-Fri Mar 11 01:40:35 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (proc_getmaxgroups, proc_setmaxgroups): Process#maxgroups
-	  and Process#maxgroups= now raise NotImplementedError if the
-	  platform don't support supplementary groups concept.
-
-Fri Mar 11 01:25:03 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (get_sc_ngroups_max): return -1 if platform don't
-	  support NGROUPS_MAX.
-
-Thu Mar 10 22:28:15 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_ssl.h: parenthesize macro arguments.
-
-Thu Mar 10 21:59:37 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (parser_encode_length): add exception as UTF8-MAC for
-	  magic comment's emacs newline specifier
-	  patched by James M. Lawrence [ruby-core:35476] fixes #4489
-
-Thu Mar 10 16:00:22 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (parser_encode_length): fix typo: the length of
-	  "-dos" and "-mac" is not 5 but 4.
-	  patched by James M. Lawrence [ruby-core:35476] fixes #4489
-
-Thu Mar 10 10:52:01 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_require.rb: setting too long string to ENV causes
-	  Errno::EINVAL on Windows.  long path name errors may causes over
-	  about 1024 bytes, then limit it about 4000 bytes.
-
-Thu Mar 10 10:09:35 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit::Runner::Worker#read): fix for the case
-	  when IO#read or IO#gets returns nil.
-
-Thu Mar 10 07:12:03 2011  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/rubygems*: Import rubygems 1.6.2 (release candidate @ 2026fbb5)
-	* test/rubygems: Ditto
-	* test/runner.rb: Added test to load path to fix test requires.
-
-Thu Mar 10 03:00:43 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_ssl.c: parenthesize macro arguments.
-
-Wed Mar  9 23:51:26 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* test/ruby/test_io_m17n.rb (test_io_new_enc): "sjis" is now an alias
-	  of Windows-31J.
-
-Wed Mar  9 23:06:13 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-parse-partial): fix indent after aref.
-
-Wed Mar  9 12:50:24 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: Rescue exceptions when
-	  people implement the method method. Thanks Lin Jen-Shin.
-	  [ruby-core:35255]
-
-	* test/psych/visitors/test_yaml_tree.rb: test for implementation of
-	  method method.
-
-Wed Mar  9 11:53:31 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/shift_jis.c: Change SJIS as an alias of Windows-31J.
-	  [ruby-dev:43027] fixes #4280
-
-	* enc/shift_jis.c: Add PCK as an alias of Windows-31J.
-
-Wed Mar  9 00:45:29 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: nmake substitutes all occurrences in macro.
-
-	* ext/extmk.rb: workaround for nmake.
-
-Tue Mar  8 23:49:45 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (proc_setgroups): cleanup.
-
-Tue Mar  8 23:40:30 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/misc/test_ruby_mode.rb: test for ruby-mode.el.
-
-Tue Mar  8 23:27:38 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (get_sc_ngroups_max): try to use NGROUPS_MAX at first if
-	  _SC_NGROUP_MAX is not defined.
-
-Tue Mar  8 23:10:16 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-parse-partial): fix for array in block.
-
-Tue Mar  8 21:44:49 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_rand.c: parenthesize macro arguments.
-
-Tue Mar  8 16:45:31 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* hash.c (ruby_setenv): MSDN says that Windows XP or earlier limits
-	  the total size of environment block to 5,120 chars.  and on such
-	  OS, putenv() causes SEGV.  So, ruby should limit the size of an
-	  environment variable to 5,120 bytes for workaround.
-
-Tue Mar  8 15:57:20 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/rubygems/test_gem_spec_fetcher.rb
-	  (TestGemSpecFetcher#test_cache_dir_escapes_windows_paths): cache_dir
-	  may have driveletter and `:' for base of cache_dir itself, so need
-	  to skip it for checking.
-
-Tue Mar  8 12:30:06 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-deep-indent-paren-p, ruby-calculate-indent):
-	  do not apply deep-indent inside parens at the beginning of
-	  expressions.
-
-Tue Mar  8 09:32:48 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (configure-ext, build-ext), ext/extmk.rb (extmake):
-	  support parallel-make under ext.
-
-Tue Mar  8 09:25:23 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (proc_setgroups): use getgrnam() if getgrnam_r() is
-	  not available.
-
-	* process.c: RARRAY_LEN() returns long int.
-
-Tue Mar  8 09:07:03 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_REPLACE_TYPE): enclose in quotes for multiple
-	  type names.
-
-Tue Mar  8 01:43:11 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* process.c (get_sc_ngroups_max): define to wrap sysconf(3).
-	  this also supports Windows which doesn't have sysconf(3).
-
-	* process.c (maxgroups): use get_sc_ngroups_max.
-
-	* process.c (proc_setmaxgroups): ditto.
-
-Tue Mar  8 01:16:49 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* gc.c (rb_objspace): an initializer must be a constant.
-
-Tue Mar  8 01:11:44 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* process.c (maxgroups): cast because sysconf(3)'s return value is long.
-
-	* process.c (proc_setmaxgroups): ditto.
-
-	* process.c (proc_setgroups): cast because RARRAY_LEN() is long.
-
-Tue Mar  8 00:02:47 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_pkey_rsa.c: parenthesize macro arguments.
-
-Mon Mar  7 22:59:39 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/pstore.rb: Delete variable @transaction and fix #4474. Patch by
-	  Masaki Matsushita (Glass_saga).
-
-	* test/test_pstore.rb(test_thread_safe): Add test for #4474.
-
-Mon Mar  7 21:31:38 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (proc_setgroups): replace getgrnam() with getgrnam_r()
-	  because getgrnam() isn't thread safe.
-
-Mon Mar  7 20:49:12 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (proc_getmaxgroups, proc_setmaxgroups): reflect
-	  platform maxgroups limitation by default instead hardcoded 65536.
-
-Mon Mar  7 17:13:00 2011  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (rb_gc_set_params): allow GC parameter configuration by
-	  environment variables.  based on a patch from funny-falcon at
-	  https://gist.github.com/856296, but honors safe level.
-
-Mon Mar  7 09:05:18 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c: NUM2RLIM is defined but no getrlimit and setrlimit on
-	  mingw.
-
-Mon Mar  7 08:38:14 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/date/date_core.c (DateTimeData): should not use bare 'long long'
-	  and 'long double', which are not defined by C89.
-
-	* ext/date/date_core.c (dt_lite_plus): get rid of overflow at casting
-	  down double to integer.
-
-Mon Mar  7 00:21:11 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (proc_getgroups): get rid of maxgroups dependency.
-	  ngroups can be calculated dynamically.
-
-Sun Mar  6 23:45:40 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: rlim_t use standard RUBY_REPLACE_TYPE mechanism.
-
-Sun Mar  6 23:26:07 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (proc_setmaxgroups): added negative value check.
-	  This was suggested by Daniel Berger. Thanks Daniel!
-	  [ruby-core:35426][Bug#4467]
-
-Sun Mar  6 23:18:23 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (maxgroups, proc_setmaxgroups): increase max groups
-	  limitation up to 65536.
-
-Sun Mar  6 22:20:59 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_pkey_ec.c: parenthesize macro arguments.
-
-Sun Mar  6 21:49:04 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* sample/list.rb (MyElem#initialize): initialize @head
-	  explicitly. Otherwise -W2 option makes following warning.
-	  "warning: instance variable @head not initialized".
-	  This issue was founded by Andrew Grimm. Thanks Andrew!
-	  [ruby-core:35435][Bug#4471]
-
-Sun Mar  6 05:21:41 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* class.c: fix camelCase to snake_case in documentation code examples.
-	  patched by Andrew Grimm. fixes Bug #4469
-
-	* marshal.c: ditto.
-
-	* proc.c: ditto.
-
-	* sample/biorhythm.rb: ditto.
-
-	* vm_eval.c: ditto.
-
-	* vm_method.c: ditto.
-
-
-Sun Mar  6 03:22:27 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (io_cntl): use rb_thread_io_blocking_region() instead
-	  rb_thread_blocking_region().
-
-Sat Mar  5 22:54:36 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* include/ruby/intern.h: fix a typo of prototype declaration.
-	  rb_mutex_try_lock -> rb_mutex_trylock [ruby-dev:43213]
-
-Sat Mar  5 19:44:03 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_io.rb (TestIO#test_fcntl_lock): small clean up.
-
-Sat Mar  5 01:33:46 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (io_cntl, nogvl_io_cntl): IO.fcntl() and IO.ioctl()
-	  release GVL during calling kernel interface.
-	  Suggested by Eric Wong. [ruby-core:35417][Bug #4463]
-
-	* test/ruby/test_io.rb (TestIO#test_fcntl_lock): add new test for
-	  IO.fcntl().
-
-Fri Mar  4 23:09:12 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* test/testunit/test_parallel.rb
-	  (test_should_run_all_without_any_leaks): consider that the order of
-	  testcase could change. [ruby-dev:43300] [Bug #4466]
-
-Fri Mar  4 22:01:14 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (io_cntl): change 'cmd' type to int. ioctl and fcntl need to
-	  be passed int.
-	* io.c (rb_io_ctl): ditto.
-
-Fri Mar  4 21:10:40 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: save warnflags. the patch is created by Eric Wong.
-	  [Bug #4465]
-
-Wed Mar  2 21:15:00 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_pkey_dsa.c: parenthesize macro arguments.
-
-Thu Mar  3 22:10:26 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (check_exec_redirect_fd, check_exec_redirect): raise
-	  ArgumentError if fd >= 3 on Windows because the feature is not
-	  supported.
-
-	* test/ruby/test_process.rb (test_execopts_redirect): remove meaningless
-	  argument.
-
-Thu Mar  3 21:21:42 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_process.rb (test_execopts_redirect): redirecting fd
-	  >= 3 is not supported on Windows, so should not specify such options
-	  when calling spawn or others.
-
-Thu Mar  3 18:59:04 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_slice_bang): raise error when the string is frozen.
-
-Thu Mar  3 14:25:19 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* strftime.c (STRFTIME): return 0 and ERANGE when precision is too
-	  large. [ruby-dev:43284] fixes #4456
-
-Thu Mar  3 00:46:51 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* addr2line.c (uleb128): cast the value to unsigned long.
-
-	* addr2line.c (fill_lines): print error when lseek fails.
-
-Thu Mar  3 00:36:29 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rexml/encoding.rb (REXML::Encoding#encoding=): store @encoding
-	  a String which means the name of the encoding.
-	  this partially revert r29646.
-
-	* lib/rexml/document.rb: follow above.
-
-	* lib/rexml/output.rb: ditto.
-
-	* lib/rexml/parsers/baseparser.rb: ditto.
-
-	* lib/rexml/source.rb: ditto.
-
-	* lib/rexml/xmldecl.rb: ditto.
-
-Wed Mar  2 23:19:56 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_byte_substr): return nil for negative length.
-
-Wed Mar  2 21:15:00 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_pkey_dh.c: parenthesize macro arguments.
-
-Wed Mar  2 14:24:04 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit/parallel.rb: Fix name from `inclement_io` to
-	  `increment_io`.
-
-Wed Mar  2 14:06:01 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_slice_bang): move treatments which is only needed
-	  when the result is not nil.
-
-Wed Mar  2 14:02:29 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/testunit/test_parallel.rb(TestParallel#spawn_runner):
-	  Fix outputting empty line in running test.
-
-	* test/testunit/tests_for_parallel/test_third.rb: Remove `sleep`
-
-Tue Mar  1 22:29:10 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_pkey.h: parenthesize macro arguments.
-
-Tue Mar  1 22:02:35 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit/parallel.rb: Fix number.
-
-Tue Mar  1 21:48:22 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit/parallel.rb: For Windows.
-
-	* test/testunit/test_parallel.rb(TestParallelWorker#test_quit_in_test):
-	  Fix for above specification change.
-	* test/testunit/test_parallel.rb(TestParallel#spawn_runner):
-	  Fix outputting empty line in running test.
-
-Tue Mar  1 20:51:57 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_system.rb (TestSystem#test_system_at):
-	  remove tests for [bug#4396]. because we decided to reject this
-	  ticket.
-
-Tue Mar  1 19:46:19 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/{test_date.rb,test_date_attr.rb}: [ruby-dev:43280]
-
-Tue Mar  1 18:40:38 2011  Ryan Davis  <ryan@YPCMC09457>
-
-	* lib/rubygems*: Import rubygems 1.6.0 (released version @ 58d8a0b9)
-	* test/rubygems: Ditto
-
-Tue Mar  1 16:22:22 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c: revert r30987 because it causes some failures in
-	  test-all, especially webrick.
-
-Tue Mar  1 15:59:53 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_byteslice): the resulted encoding should keep
-	  original encoding. this also fixes the encoding when the result
-	  shares internal string. [ruby-core:35376]
-
-Tue Mar  1 13:25:00 2011  Kenta Murata <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpMemAlloc): CVE-2011-0188.
-	  Fixes a bug reported by Drew Yao <ayao at apple.com>
-
-Tue Mar  1 10:34:39 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_byteslice): Add String#byteslice. [ruby-core:35376]
-
-Tue Mar  1 00:12:49 2011  Tajima Akio <artonx@yahoo.co.jp>
-
-	* include/ruby/win32.h: define WIN32 if neither _WIN64 nor WIN32
-	  defined. it forces to use push/pop for pack(4) pragma.
-
-Mon Feb 28 23:52:13 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* test/testunit/test_rake_integration.rb (test_with_rake_runner):
-	  use assert_in_out_err for suppress messages.
-
-Mon Feb 28 22:48:56 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/win32.c (rb_w32_spawn): use shell if a commandline contain
-	  double-quote character.
-	* win32/win32.c (is_internal_cmd): similar, use shell if a commandline
-	  contain caret character.
-
-	* test/ruby/test_system.rb (TestSystem#test_system_at): fix
-	  wrong test case. if system() invoke a command by using shell,
-	  system() never return nil. Also, "" quotation must not appear
-	  twice in a command line.
-
-Mon Feb 28 17:36:57 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_pkcs7.c: parenthesize macro arguments.
-
-Mon Feb 28 16:48:42 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_pkcs12.c: parenthesize macro arguments.
-
-Mon Feb 28 16:28:15 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (tr_trans): when the hash for multibyte repl is empty,
-	  tr is inverse mode, and a character doesn't much the table, the
-	  character should be replaced by last replacement. Bug #4449
-
-Mon Feb 28 16:38:56 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_ocsp.c: parenthesize macro arguments.
-
-Mon Feb 28 13:02:15 2011  Danial Pearce <github@tigris.id.au>
-
-	* lib/tempfile.rb: Fix example file paths in docs for tempfile.
-	  https://github.com/ruby/ruby/pull/5
-
-Mon Feb 28 12:56:18 2011  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_init): typo fix.
-	  https://github.com/ruby/ruby/pull/8
-
-Mon Feb 28 12:28:13 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/date/date_core.c (datetime_s_now): localtime() and localtime_r()
-	  required time_t pointer as 1st parameter, and tv_sec member of struct
-	  timeval is long.
-
-Mon Feb 28 11:57:40 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/testunit/test_parallel.rb: Temporally disable test on Windows.
-
-Mon Feb 28 07:28:35 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb(Test::Unit::Runner#after_worker_quit):
-	  method name more be natural English.
-
-	* lib/test/unit.rb(Test::Unit::Runner::Worker.launch):
-	  IO.sync doesn't need. Should use "b" for mode.
-
-Sun Feb 27 21:59:37 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_system.rb (TestSystem#test_system_redirect_win):
-	  add test for system().
-
-Sun Feb 27 18:00:09 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb: Refactoring; Worker never use Hash for internal
-	  storage.
-
-	* lib/test/unit.rb: Never use Kernel#spawn. Use IO.popen instead.
-
-Sun Feb 27 13:16:48 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_ns_spki.c: parenthesize macro arguments.
-
-Sat Feb 26 17:07:53 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: [Feature #4257]
-
-	* ext/date/extconf.rb: new
-
-	* ext/date/date_core.c: new
-
-Sat Feb 26 16:10:23 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb: --jobs-status won't puts over 2 lines.
-
-	* test/testunit/test_parallel.rb: Fix test for above.
-
-	* lib/test/*: refactoring.
-
-Sat Feb 26 07:10:05 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/scalar_scanner.rb: fix parsing timezone's whose
-	  whose format is (+/-)hhmm.  Thanks Goncalo Silva!
-
-	* test/psych/test_scalar_scanner.rb: test for bug.
-
-Thu Feb 24 23:02:55 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_hmac.c: parenthesize macro arguments.
-
-Thu Feb 24 22:53:10 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (love): for the birthday.
-
-Thu Feb 24 22:51:54 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (ruby_vm_destruct): run vm exit hooks after all objects are
-	  destructed.
-
-Thu Feb 24 14:40:33 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* ChangeLog (vim): Modeline for vim
-
-Thu Feb 24 13:39:25 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* common.mk: Use $RUNRUBY for worker process.
-
-	* lib/test/unit.rb: Fix bug.
-
-	* lib/test/unit.rb: @options[:ruby](@opts[:ruby]) is now Array.
-
-	* test/testunit/parallel.rb: Fix for above.
-
-Thu Feb 24 10:05:55 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/testunit/tests_for_parallel/misc.rb: Fix bug in r30947.
-
-	* lib/test/unit.rb, lib/test/unit/assertions.rb: For this test.
-
-Wed Feb 23 23:07:38 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* test/testunit/test_parallel.rb, test/testunit/parallel/*:
-	  Test for r30939.
-
-	* lib/test/unit.rb: For test.
-
-	* lib/test/parallel.rb: For test.
-
-	* lib/test/unit/testcase.rb: For test.
-
-Wed Feb 23 22:05:13 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_engine.c: parenthesize macro arguments.
-
-Tue Feb 22 23:15:17 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb: Fix --ruby option doesn't effect.
-
-	* lib/test/unit.rb: Fix typo.
-
-Tue Feb 22 21:39:28 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_digest.c: parenthesize macro arguments.
-
-Tue Feb 22 14:34:26 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb: Fix merging miss.
-
-Tue Feb 22 12:27:26 2011  Shota Fukumori  <sorah@tubusu.net>
-
-	* lib/test/unit.rb: Add new options; --jobs,-j,--ruby,--jobs-status,
-	  --no-retry.
-	  [Feature #4415] [ruby-dev:43226],[ruby-dev:43222],[ruby-core:35294]
-
-	* lib/test/unit/parallel.rb: Used at test/unit --jobs(-j) option.
-
-	* test/csv/test_serialization.rb: test/unit parallel running ready.
-
-	* test/rake/test_file_task.rb: test/unit parallel running ready.
-
-Tue Feb 22 06:09:10 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/syslog/syslog.c: Apply documentation patch from mathew murphy.
-	  [Bug #4149]
-
-Tue Feb 22 03:09:10 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych.rb: increase Psych to 1.1.0 for help with
-	  debugging.
-
-Tue Feb 22 03:04:46 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/streaming.rb: refactor streaming methods to a
-	  module.
-	* ext/psych/lib/psych/stream.rb: extracted streaming specific methods
-	  to a module.
-	* ext/psych/lib/psych/json/stream.rb: JSON stream inherits from
-	  JSONTree and includes streaming methods.
-	* ext/psych/lib/psych/visitors/json_tree.rb: JSON does not support
-	  object references, so remove object reference testing when building
-	  JSON trees.
-
-Tue Feb 22 02:41:51 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb (accept): use Hash#key?
-	  when looking up object references to err on the side of cache
-	  misses.
-
-Mon Feb 21 10:58:39 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/json/yaml_events.rb: refactoring JSON event
-	  handling methods to a module for reuse.
-	* ext/psych/lib/psych/json/tree_builder.rb: AST builder uses JSON
-	  event methods.
-	* ext/psych/lib/psych/json/stream.rb: stream emitter uses JSON event
-	  methods.
-
-Mon Feb 21 10:54:29 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/json/stream.rb: do not emit custom tags in maps
-	  or sequences when emitting JSON.
-	* ext/psych/lib/psych/json/tree_builder.rb: do not emit custom tags in
-	  sequences when emitting JSON.
-	* test/psych/json/test_stream.rb: tests for custom stream emits.
-	* test/psych/test_json_tree.rb: tests for JSON emits.
-
-Mon Feb 21 10:05:10 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/json/ruby_events.rb: DRY up ruby event handling
-	  for JSON.
-	* ext/psych/lib/psych/visitors/json_tree.rb: use ruby events module
-	* ext/psych/lib/psych/json/stream.rb: ditto
-
-Mon Feb 21 10:01:01 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/json/stream.rb: fix JSON stream emits to use
-	  double quotes during stream.
-	* test/psych/json/test_stream.rb: tests to reflect changes.
-
-Mon Feb 21 00:38:56 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_system.rb (TestSystem#test_system_at):
-	  add testcase for bug4396.
-
-Sun Feb 20 19:59:32 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_cipher.c: parenthesize macro arguments.
-
-Sun Feb 20 16:26:45 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (exec_recursive): prevent temporary objects from GC.
-
-	* prevent temporary objects from GC, and should not use
-	  RSTRING_PTR() for function calls since it evaluates the argument
-	  a couple of times.
-
-Sun Feb 20 16:22:53 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_flock): use rb_thread_io_blocking_region for the
-	  time being.
-
-Sun Feb 20 05:33:17 2011  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 2.0.2 r6207.
-	* test/minitest/*: ditto
-
-Sun Feb 20 02:14:09 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* signal.c (sig_trap): avoid pthread_sigmask(xx, &mask, &mask) usage
-	  because FreeBSD don't permit it. If it's used, it behave as
-	  pthread_sigmask(xx, NULL, &mask).
-
-	* signal.c (init_sigchld): ditto.
-
-Sun Feb 20 00:46:51 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_bn.c: parenthesize macro arguments.
-
-Sat Feb 19 22:37:42 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* vm_insnhelper.c (vm_check_if_namespace): guard temporary object
-	  from GC.
-
-Sat Feb 19 06:36:27 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/test/unit.rb: partial revert of r30849. [ruby-core:32864]
-
-	* test/testunit/test_rake_integration.rb: adding an integration test
-	  with the rake loader to prevent regressions.
-
-Fri Feb 18 19:31:31 2011  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::remove_entry_secure): there is a
-	  race condition in the case where the given path is a directory,
-	  and some other user can move that directory, and create a
-	  symlink while this method is executing.
-	  Reported by: Nicholas Jefferson <nicholas at pythonic.com.au>
-
-Fri Feb 18 00:28:39 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* compile.c (get_exception_sym2type): guard temporary object from GC.
-
-Thu Feb 17 23:54:29 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* iseq.c (prepare_iseq_build): initialize iseq_compile_data::err_info
-	  with nil. this fix exception in rb_iseq_load().
-
-Thu Feb 17 22:32:35 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* test/ruby/test_marshal.rb (test_marshal_dump_extra_iv):
-	  fix a typo of local variable. [Bug #3720] [ruby-dev:42083]
-
-Thu Feb 17 21:32:53 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl.h: parenthesize macro arguments.
-
-Wed Feb 16 20:37:48 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* eval_jump.c (rb_exec_end_proc): changed at_exit and END proc
-	  evaluation order. [Bug #4400] [ruby-core:35237]
-	* eval_jump.c (rb_mark_end_proc): ditto.
-
-	* test/ruby/test_beginendblock.rb (TestBeginEndBlock#test_nested_at_exit):
-	  added a test for nested at_exit.
-	* test/ruby/test_beginendblock.rb (TestBeginEndBlock#test_beginendblock):
-	  changed the test to adopt new spec.
-
-Wed Feb 16 20:17:06 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/openssl_missing.h: parenthesize macro arguments.
-
-Tue Feb 15 21:37:45 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/gdbm/gdbm.c: parenthesize macro arguments.
-
-Tue Feb 15 20:34:53 2011  Tanaka Akira  <akr@fsij.org>
-
-	* array.c (ary_join_1): fix array size.
-
-Tue Feb 15 19:43:23 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: fix and resubmit r30621. [ruby-dev:43203]
-
-Tue Feb 15 15:41:30 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* array.c (array_join): copy the encoding of the first element as
-	  an initial encoding.
-
-	* array.c (array_join_0): ditto.
-
-	* array.c (array_join_1): ditto.
-
-	* array.c (inspect_ary): ditto.
-
-	* array.c (array_join_1): add an argument to check the appending is
-	  first one or not.
-
-Tue Feb 15 15:40:53 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* hash.c (inspect_i): copy the encoding of the first key as
-	  an initial encoding.
-
-Mon Feb 14 15:00:16 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* array.c (inspect_ary): don't taint the inspected result of a
-	  recursive array.
-
-Tue Feb 15 15:43:29 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): change the rule for empty strings:
-	  remove the special treatment of the US-ASCII encoded empty string.
-	  Now Encoding.compatible? usually respect the encoding of the
-	  receiver.
-
-Tue Feb 15 15:39:37 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): remove special treatment of
-	  ASCII-8BIT receivers.
-
-	* string.c (str_gsub): set initial encoding of the buffer as the
-	  same of the receiver. [ruby-core:35141]
-
-Tue Feb 15 09:49:33 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_system.rb (TestSystem#test_system_at): use findstr
-	  command instead of find command, because the latter is confusing
-	  another famous Unix command.
-
-Mon Feb 14 23:01:19 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* thread.c (rb_thread_io_blocking_region): reset th->waiting_fd
-	  after blocking region, because remaining waiting_fd might
-	  cause unnecessary IOError.
-
-Mon Feb 14 21:06:50 2011  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* configure.in: revert r30621.  That revision introduced mkmf test
-	  failures and it turned out to be OK to revert. [ruby-dev:43203]
-
-Mon Feb 14 21:04:01 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/fiddle/conversions.h: parenthesize macro arguments.
-
-Mon Feb 14 18:41:47 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/setup.mak (USE_RUBYGEMS): fixed r30835. It didn't work on
-	  mswin32 port. If you changed win32/configure.bat, you should change
-	  setup.mak too.
-
-Mon Feb 14 17:28:34 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_system.rb (TestSystem#test_system_at):
-	  added test. [ruby-core:35218] (#4393)
-
-Mon Feb 14 13:15:35 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (is_internal_cmd): if the first char of prog is '@',
-	  execute it via shell.  [ruby-core:35218] (#4393)
-
-Mon Feb 14 10:33:45 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/test/unit.rb: revert r30863, because it causes too many noise.
-
-Mon Feb 14 07:34:55 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/curses/curses.c: parenthesize macro arguments.
-
-Sun Feb 13 19:41:47 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit::RequireFiles#non_options): skip
-	  test suites failed to load instead of mere messages.
-
-Sun Feb 13 09:56:44 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/openssl/test_config.rb (OpenSSL#test_freeze): fix error
-	  message assertion.
-
-	* test/io/nonblock/test_flush.rb (TestIONonblock#flush_test):
-	  return true to finish the test.
-
-	* test/syck/test_string.rb (Syck::TestString#test_non_binary_string):
-	  use assert_not instead of refute, unless required minitest
-	  explicitly.
-
-	* test/test_prime.rb (TestPrime::sieve.Integer): ditto.
-
-	* test/xmlrpc/webrick_testing.rb (WEBrick_Testing#start_server):
-	  catch IOError when server socket was closed.
-
-Sun Feb 13 07:39:51 2011  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_inject): typo fixed. a patch from Gaku Ueda in
-	  [ruby-core:35216].
-
-Sun Feb 13 00:48:47 2011  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (Date#===): [ruby-core:35127]
-
-Sun Feb 13 00:29:18 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit::Options#process_args): always
-	  return options.
-
-	* lib/test/unit.rb (Test::Unit::RequireFiles#non_options): return
-	  if any test case get loaded.
-
-	* lib/test/unit.rb (Test::Unit::AutoRunner#initialize): do not add
-	  default directory if it is nil.
-
-	* lib/test/unit.rb (Test::Unit::AutoRunner#process_args): return
-	  true if any test cases to run.
-
-Sat Feb 12 23:17:43 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (assert_include): add alias.
-
-Sat Feb 12 14:44:20 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_io_blocking_region): new function to run
-	  blocking region with GIL released, for fd.
-
-	* thread.c (rb_thread_fd_close): implement.  [ruby-core:35203]
-
-	* vm.c (th_init): rename from th_init2.
-
-Sat Feb 12 14:41:36 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit::AutoRunner#initialize): use
-	  default_dir if no test case given.
-
-	* lib/test/unit.rb (Test::Unit::Runner): rename from Test::Unit::Mini.
-
-	* lib/test/unit.rb (Test::Unit::GlobOption#non_options): run tests
-	  under base directory if no argument given.
-
-Sat Feb 12 08:03:12 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_settracefunc.rb (TestSetTraceFunc): ensure to use
-	  method_added hook defined in Module.
-
-Sat Feb 12 01:04:02 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): enable rubygems if --gem option is given.
-
-	* ruby.c (process_options): load rubygems if it is disabled but
-	  --gem option is given.
-
-Fri Feb 11 23:27:50 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ruby.c (proc_options): add --gem=enabled as an alias of
-	  --enable=gems and --gem=disabled as an alias of --disable=gems.
-	  Gem named "enabled" or "disabled" has already been reserved
-	  legitimately for this purpose.
-
-Fri Feb 11 23:17:04 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/cfunc.c: parenthesize macro arguments.
-
-Fri Feb 11 21:41:53 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bin/testrb, test/runner.rb, lib/test/unit.rb: improve backward
-	  compatibility.
-
-Fri Feb 11 19:45:26 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): use rb_ary_free to free internal object.
-
-	* gc.h (RUBY_FREE_UNLESS_NULL): get rid of double free.
-	  [ruby-core:35192]
-
-Fri Feb 11 16:57:03 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_transcode.rb (test_from_cp50221): fix wrong
-	  assertion and move back.
-
-Fri Feb 11 14:33:18 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (assert_no_match): alias for
-	  backward compatibility.
-
-Fri Feb 11 12:06:48 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (add_gems, require_libraries, proc_options): add
-	  --require and --gem options.
-
-Fri Feb 11 12:03:24 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rubygems): add --disable-rubygems option.
-
-Fri Feb 11 11:39:03 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/fake.rb.in (CROSS_COMPILING): get rid of NameError.
-
-Thu Feb 10 23:12:34 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/dl.h: parenthesize macro arguments.
-
-Wed Feb  9 23:11:27 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c: parenthesize macro arguments.
-
-Tue Feb  8 11:47:11 2011  Loren Sands-Ramshaw  <lorensr@gmail.com>
-
-	* array.c: documentation clarification in rotate, rotate!,
-	  index, and rindex. [ruby-core:35144]
-
-Wed Feb  9 09:45:43 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/rdoc/test_rdoc_encoding.rb: remove unnecessary (and wrong)
-	  platform-dependent hacks.
-
-Wed Feb  9 00:47:18 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/etc/etc.c: parenthesize macro arguments.
-
-Tue Feb  8 19:38:00 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-expr-beg): fix for invalid nest errors.
-
-Tue Feb  8 19:22:59 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in (AC_MSG_CHECKING): fixed typo. the patch is
-	  created by Benoit Daloze. Thanks a lot. [Bug #4384][ruby-core:35148]
-
-Tue Feb  8 16:04:03 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_io_s_sysopen): use NUM2MODET() instead NUM2UINT().
-
-Tue Feb  8 15:59:23 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (rb_run_exec_options_err): use MODET2NUM() instead
-	  LONG2NUM().
-
-Tue Feb  8 13:59:56 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: revert r30725. Now we have proper runtime fallback.
-	  Therefore, no need compile time disabling. (see r30762).
-
-Tue Feb  8 01:00:21 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* process.c (proc_setgroups): add GC guard to prevent intermediate
-	  variable from GC.
-
-Tue Feb  8 00:56:33 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-expr-beg, ruby-in-here-doc-p): tell
-	  singleton class definitions from here documents.
-
-	* misc/ruby-mode.el (ruby-expr-beg, ruby-parse-partial): keyword
-	  followed by colon is label.
-
-Mon Feb  7 22:56:16 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* lib/benchmark.rb (Benchmark#bmbm): use ensure clause instead of
-	  Object#tap to restore STDOUT.sync.
-
-Mon Feb  7 22:34:20 2011  Tanaka Akira  <akr@fsij.org>
-
-	* lib/net/http.rb (Net::HTTP#connect): support SNI (Server Name
-	  Indication) for HTTPS.  [ruby-dev:43164]
-	  http://stackoverflow.com/questions/4685736/openssl-server-name-indication-support-in-ruby
-
-Mon Feb  7 16:05:32 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc: Upgrade to RDoc 3.5.3  Fixes [Bug #4376]
-
-Mon Feb  7 11:46:59 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (rdoc): add --encoding=UTF-8; ruby's rdoc must be UTF-8.
-
-Mon Feb  7 10:21:50 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/rdoc/test_rdoc_options.rb (TestRDocOptions#test_check_files):
-	  there is no easy way to create owner unreadable file on Windows.
-	  So, skip the test.
-
-Sun Feb  6 13:48:29 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/json/lib/json/common.rb (JSON::MissingUnicodeSupport.iconv):
-	  should not drop rest of the result.  use Iconv.conv instead.
-
-Sun Feb  6 12:46:02 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* string.c (gsub): Ensure result encoding is the same as input
-	  encoding.  [Bug #4340].
-
-Sun Feb  6 12:18:25 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (words, qwords): dispatch array events.  based on a
-	  patch from Michael Edgar.  [Bug #4365].
-
-Sun Feb  6 12:12:59 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/fileutils/fileasserts.rb (FileAssertions): separate module.
-
-Sun Feb  6 11:29:23 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dbm/dbm.c: parenthesize macro arguments.
-
-Sat Feb  5 22:01:59 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert):
-	  revert r30796. r30797 and r30798 are an alternative fix.
-	  [ruby-dev:43174]
-
-Sat Feb  5 21:47:09 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (mlhs_basic): include mlhs_post for ripper.  a patch
-	  from Michael Edgar at [ruby-core:35078].
-
-Sat Feb  5 21:22:21 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (assert_block): move from
-	  test/fileutils/fileasserts.rb.
-
-	* test/fileutils/fileasserts.rb (assert_block): pass arguments
-	  as-is.  [ruby-dev:43174]
-
-Sat Feb  5 16:47:54 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert):
-	  msg can be passed nil. [Bug #4371] [ruby-dev:43174]
-
-Sat Feb  5 15:18:25 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc: Upgrade to RDoc 3.5.2
-
-Sat Feb  5 12:05:27 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_node_init_copy): SyckNode is not
-	  copiable.  [ruby-core:35094]
-
-Sat Feb  5 11:48:47 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_alloc): leave data ptr
-	  NULL.
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_new, ossl_cipher_initialize):
-	  allocate internal structure.  [ruby-core:35094]
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_copy): ditto.
-
-Sat Feb  5 11:29:10 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/json/parser/parser.h (GET_PARSER): raise TypeError.
-
-	* ext/json/parser/parser.rl (cParser_initialize): ditto.
-
-	* ext/json/parser/parser.h (GET_PARSER): check if initialized.
-	  [ruby-core:35079]
-
-	* ext/json/parser/parser.rl (cParser_initialize): ditto.
-
-Sat Feb  5 10:09:31 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_get_expanded_load_path): always expand load paths.
-
-Sat Feb  5 09:38:08 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (encoded_dup): extract.
-
-Sat Feb  5 03:37:47 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::LowMethods): make low level methods
-	  in NoWrite and DryRun to do nothing.  [ruby-dev:43129]
-
-	* test/fileutils/fileasserts.rb: add message arguments.
-
-	* test/fileutils/fileasserts.rb (Test::Unit::Assertions#assert_block):
-	  show the given message.
-
-Sat Feb  5 02:09:39 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (lex_getline, parser_set_encode): set encoding of lines
-	  in SCRIPT_LINES__ as source encoding.  [ruby-dev:43168]
-
-Sat Feb  5 02:08:37 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (ruby_thread_data_type): add prefix.
-
-Sat Feb  5 00:59:54 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* vm_core.h (GetThreadPtr): use TypedData_Get_Struct() instead
-	  CoreDataFromValue() because we need type check. Otherwise,
-	  type mismatch can cause segmentation fault crash.
-	  [ruby-core:35086] [Ruby 1.9-Bug#4367]
-
-	* vm.c (thread_data_type): remove static.
-
-Fri Feb  4 19:14:27 2011  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/utf8_mac.trans: parenthesize macro arguments.
-
-Fri Feb  4 12:11:51 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* string.c (str_utf8_nth): fixed a condition of optimized lead
-	  byte counting. [Bug #4366][ruby-dev:43170]
-
-Fri Feb  4 01:50:13 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* string.c (count_utf8_lead_bytes_with_word): wrote function
-	  comments.
-
-Fri Feb  4 00:14:55 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzfile_reader_get_unused): no need to dup
-	  before rb_str_resurrect.
-
-Thu Feb  3 20:04:44 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/curses/curses.c (CHECK): unused macro removed.
-
-Thu Feb  3 18:33:26 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzfile_reader_get_unused): use rb_str_resurrect
-	  because gz->z.input is hidden string. [ruby-core:35057]
-
-Thu Feb  3 16:34:10 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/shift_jis.c (code_to_mbc): cast as int from the subtraction of
-	  pointers.
-
-	* enc/utf_16le.c (utf16le_mbc_enc_len): use ptrdiff_t.
-
-	* enc/utf_32be.c (utf32be_left_adjust_char_head): ditto.
-
-	* enc/utf_32le.c (utf32le_left_adjust_char_head): ditto.
-
-Thu Feb  3 16:31:43 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/missing.h: don't use HAVE_STDDEF_H because it never
-	  defined by configure though configure.bat defines it.
-
-	* include/ruby/ruby.h: move include stddef.h to defines.h
-
-	* include/ruby/defines.h: ditto.
-
-Wed Feb  2 20:25:04 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_step_back): cast 4th argument 'n'
-	  as int because Ruby usually treats length value as long but
-	  onigenc_step_back's 4th argument is int.
-
-Thu Feb  3 07:20:46 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb: use Regexp::NOENCODING
-	  rather than magic number.
-
-	* ext/syck/lib/syck/rubytypes.rb: ditto
-
-Thu Feb  3 07:16:11 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* re.c (Init_Regexp): added a constant for ARG_ENCODING_NONE
-	  [ruby-core:35054]
-
-	* test/ruby/test_regexp.rb: corresponding test.
-
-Thu Feb  3 07:02:16 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb: ARG_ENCODING_NONE regular
-	  expressions can round trip. [ruby-core:34969]
-
-	* test/psych/test_yaml.rb: test for ARG_ENCODING_NONE regex
-
-	* ext/sych/lib/syck/rubytypes.rb: ARG_ENCODING_NONE regular
-	  expressions can round trip.
-
-	* test/syck/test_yaml.rb: test for ARG_ENCODING_NONE regex
-
-Wed Feb  2 17:09:22 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_io_fdatasync): Use fsync(2) if the underlying
-	  operating system does not support fdatasync(2).
-
-Wed Feb  2 14:51:08 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup/to_tt_only.rb: commit miss
-	* test/rdoc/test_rdoc_markup_to_tt_only.rb: ditto
-	* test/rdoc/test_rdoc_single_class.rb: ditto
-
-Wed Feb  2 09:27:53 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc: Upgrade to RDoc 3.5.1
-
-Wed Feb  2 00:30:43 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* include/ruby/st.h (st_table): Added comment why we need __extension__.
-
-Tue Feb  1 20:45:44 2011  Tanaka Akira  <akr@fsij.org>
-
-	* enc/encdb.c: parenthesize macro arguments.
-
-Tue Feb  1 15:12:26 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_require.rb (TestRequire#test_require_with_unc):
-	  use ``127.0.0.1'' instead of ``localhost'' as host name, because
-	  XP or earlier cannot resolv it as NBT hostname.
-
-Tue Feb  1 13:20:39 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/benchmark/test_benchmark.rb (#capture_bench_output):
-	  Added explicit sleep. Windows have imprecise time support.
-	  Thus Tms.new.Add!{} may be or may be not equal 0. The
-	  test failure started since r30747.
-
-Tue Feb  1 11:03:47 2011  Ryan Davis  <ryan@lust.local>
-
-	* lib/rubygems*: Import rubygems 1.5.0 (released version @ 1fb59d0)
-	* test/rubygems: Ditto
-
-Tue Feb  1 08:01:39 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/console/console.c (console_set_winsize): new method to set
-	  console size.  [EXPERIMENTAL]
-
-	* ext/io/console/console.c (console_winsize): use GetWriteFD.
-
-Tue Feb  1 02:28:14 2011  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* include/ruby/win32.h, win32/win32.c: add rb_w32_inet_ntop.
-	  inet_ntop's minimum supported client is Vista.
-
-Tue Feb  1 00:10:30 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/benchmark.rb: fix benchmark to work with current ruby.
-	  patched by Benoit Daloze [ruby-core:33846] [ruby-dev:43143]
-	  merged from https://github.com/eregon/ruby/commits/benchmark
-
-	*  lib/benchmark (Report#width): update documentation
-	*  lib/benchmark: document the return value of #benchmark and the
-	   :list attribute in Report
-	*  lib/benchmark (Tms#format): rename variables, use String#%
-	   instead of Kernel.format
-	*  lib/benchmark: remove undocumented Benchmark::times (an alias
-	   of Process::times used twice)
-	*  lib/benchmark (#benchmark): use label_width for the caption
-	*  lib/benchmark (Tms#initialize): rename variables
-	*  lib/benchmark: allow title to not be a String and call #to_s
-	*  lib/benchmark (Benchmark#bm): return an Array of the times with
-	   the labels
-	*  lib/benchmark: correct output for Benchmark#bmbm
-	   (remove the extra space)
-	*  lib/benchmark: add a few tests for Benchmark::Tms output
-	*  lib/benchmark: improve style (enumerators, ljust, unused vars)
-	*  lib/benchmark: add spec about output and return value
-	*  lib/benchmark: improve basic style and consistency
-	   no parenthesis for print and use interpolation instead of printf
-	*  lib/benchmark: remove unnecessary conversions and variables
-	*  lib/benchmark: correct indentation
-	*  lib/benchmark: rename the FMTSTR constant and variable to FORMAT
-	*  lib/benchmark: remove useless exception
-
-	*  test/benchmark: remove unused variable warnings
-
-Mon Jan 31 23:27:23 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* node.c (add_id): remove duplicated rb_id2str() call.
-
-Sun Jan 30 17:19:46 2011  Tanaka Akira  <akr@fsij.org>
-
-	* missing/langinfo.c: parenthesize macro arguments.
-
-Mon Jan 31 21:57:39 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: revert r30698.
-
-Mon Jan 31 21:32:44 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* thread.c (thread_start_func_2): check deadlock condition before
-	  release thread stack. fix memory violation when deadlock detected.
-	  reported by Max Aller. [Bug #4009] [ruby-core:32982]
-
-Mon Jan 31 14:45:47 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/locale.rb (IRB::Locale::#search_file):
-	  Gem might be undefined if --disable-gems. [ruby-core:34990]
-
-Mon Jan 31 12:26:14 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* addr2line.c: suppressed shorten-64-to-32 warnings.
-	* regcomp.c: ditto.
-	* regexec.c: ditto.
-	* regint.h: ditto.
-	* regparse.c: ditto.
-	* regparse.h: ditto.
-	* time.c: ditto.
-	* variable.c: ditto.
-
-Mon Jan 31 04:45:12 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* array.c (rb_ary_uniq_bang): call ARY_SET_LEN(ary, 0) before
-	  ary_resize_capa because ary_resize_capa expects resized length is
-	  smaller than current array length. call rb_ary_unshare before
-	  ary_resize_capa because ary_resize_capa lost the reference to
-	  original shared array. [ruby-core:34997]
-
-Sun Jan 30 17:19:46 2011  Tanaka Akira  <akr@fsij.org>
-
-	* missing/crypt.c: parenthesize macro arguments.
-
-Sun Jan 30 16:40:27 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/rubygems/test_gem_security.rb (TestGemSecurity): valid only
-	  if OpenSSL is available.
-
-	* test/dl/test_dl2.rb (TestDL#test_sin): math functions do not
-	  work on x86_64 due to the design of DL2.
-
-	* test/dl/test_func.rb (DL::TestFunc#test_{sinf,sin): ditto.
-
-Sun Jan 30 16:09:22 2011  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c (rb_strftime_with_timespec): %G produces 4 digits.
-
-Sun Jan 30 15:13:19 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/emacs_mule.c (emacsmule_islead): 7bit range is also leading
-	  byte.
-
-Sun Jan 30 13:03:16 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_fetch_m): use useful message for longer key, not a
-	  nonsense id value.
-
-	* string.c (rb_str_ellipsize): new function to ellipsize a string.
-
-	* include/ruby/encoding.h (rb_enc_step_back): new function to step
-	  back n characters.
-
-Sun Jan 30 12:53:38 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/emacs_mule.c (emacsmule_islead): fix inverse condition.
-
-Sun Jan 30 09:37:25 2011  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* io.c (struct argf): char behaves like an unsigned char
-	  by default on AIX.
-
-Sun Jan 30 08:02:55 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: Mac OS X wrongly reports it has fdatasync(3).
-
-Sun Jan 30 03:29:47 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/ossl_bn.c (GetBNPtr): add missing nil case.
-	  patched by Martin Bosslet. [ruby-core:34987]
-
-Sun Jan 30 01:02:28 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* include/ruby/ruby.h: Added NUM2MODET() and MODET2NUM() default
-	  definition.
-	  Because r30686 introduced win32 build failure.
-
-Sat Jan 29 22:16:26 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* array.c (rb_ary_join): [].join.encoding must be US-ASCII.
-	  [ruby-list:47790]
-
-Sat Jan 29 20:22:39 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* benchmark/driver.rb (BenchmarkDriver#measure): Show command line
-	  when abnormal exiting occur.
-
-Sat Jan 29 10:53:16 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_insnhelper.c (vm_get_ev_const): no-scope reference to toplevel
-	  private constant has been prohibited incorrectly.
-
-	* test/ruby/test_module.rb (test_toplevel_private_constant): add a
-	  test for above.
-
-Sat Jan 29 08:43:23 2011  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/rubygems*: Import rubygems 1.5.0 (release candidate @ 09893d9)
-	* test/rubygems: Ditto
-
-Sat Jan 29 02:02:37 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* variable.c (rb_mod_const_of, sv_i): Module#constant should exclude
-	  private constants.  see [ruby-core:32912].
-
-	* test/ruby/test_module.rb (test_constants_with_private_constant): add
-	  a test for above.
-
-Sat Jan 29 01:36:41 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* variable.c (rb_const_set): const_set should preserve constant
-	  visibility.  see [ruby-core:32912].
-
-	* test/ruby/test_module.rb: add a test for above.
-
-Sat Jan 29 01:24:57 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (NODE_CLASS, NODE_MODULE), insns.def (defineclass): raise
-	  an exception when "class Foo::Bar" is evaluated and Foo::Bar is
-	  private.  To implement this, define_type of "defineclass" is added
-	  so that the instruction can distinguish whether the class definition
-	  is scoped (class Foo::Bar) or not (class Bar).
-
-	* test/ruby/test_class.rb (test_redefine_private_class),
-	  test/ruby/test_module.rb
-	  (test_define_module_under_private_constant): add tests for above.
-
-Sat Jan 29 01:19:17 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* constant.h, variable.c: to ensure compatibility, rb_const_get_* must
-	  not raise an exception even when the constant is private.  Instead,
-	  rb_public_const_get_* and rb_public_const_defined_* are introduced,
-	  which raise an exception when the referring constant is private.
-	  see [ruby-core:32912].
-
-	* vm_insnhelper.c (vm_get_ev_const): use rb_public_const_get_* instead
-	  of rb_const_get_* to follow the constant visibility when user code
-	  refers a constant.
-
-	* test/ruby/test_marshal.rb (test_marshal_private_class): add a test.
-	  This test had failed because of incompatibility of rb_const_get.
-
-Sat Jan 29 00:30:44 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* variable.c (set_const_visibility): fix typo.  a patch from Tomoyuki
-	  Chikanaga in [ruby-core:32919].
-
-Fri Jan 28 23:20:28 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/gdbm/test_gdbm.rb (TestGDBM#test_s_open_no_create,
-	  TestGDBM2#test_writer_open_notexist): We only need to skip libgdbm
-	  1.8.0, not all 1.8.x. 1.8.1 or later don't have GDBM_WRITER sickness.
-
-Fri Jan 28 21:56:57 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/dbm/extconf.rb: Added new header places for Fedora13.
-
-Fri Jan 28 21:49:30 2011  Tanaka Akira  <akr@fsij.org>
-
-	* ext/zlib/zlib.c: parenthesize macro arguments.
-
-Fri Jan 28 17:47:33 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/gdbm/test_gdbm.rb (TestGDBM2#test_writer_open_notexist):
-	  gdbm 1.8.x changed GDBM::WRITER behavior. Thus our testcase need
-	  to be changed too.
-
-Fri Jan 28 17:33:28 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/gdbm/test_gdbm.rb (TestGDBM#test_s_open_no_create): skip
-	  the test if gdbm version is 1.8.x.
-
-Fri Jan 28 16:30:51 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_require.rb (TestRequire#test_require_too_long_filename):
-	  Added -w option because too long path error don't output a message
-	  by default since r30660. [Bug #4336] [ruby-dev:43134]
-
-Fri Jan 28 16:19:38 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_require.rb (TestRequire#test_require_path_home_{1,2}):
-	  Added -w option because too long path error don't output a message
-	  by default since r30660. [Bug #4336] [ruby-dev:43134]
-
-Fri Jan 28 16:04:54 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_require.rb (TestRequire#test_require_path_home_{1,2,3}):
-	  split from test_require_path_home.
-
-Fri Jan 28 13:04:38 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in (--with-valgrind): Fixed r29683. Now this option
-	  is really default on.
-
-Fri Jan 28 12:05:48 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: Add #include<sys/stat.h> when struct stat is
-	  tested. Otherwise, incomplete type dereference error will occur.
-
-Fri Jan 28 11:53:19 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: redundant variable names made strange conftest
-	  error. Fixed it.
-
-Fri Jan 28 11:47:00 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_process.rb (TestProcess#test_too_long_path{,2}):
-	  should handle Errno::E2BIG, because this test checks crash of ruby,
-	  not the error type system.
-
-Fri Jan 28 11:23:54 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_io_open): Use NUM2MODET() instead NUM2UINT().
-	* io.c (rb_scan_open_args): ditto.
-
-Fri Jan 28 10:58:20 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: Added mode_t type checking.
-	* process.c (rb_exec_arg_addopt): Use NUM2MODET() instead
-	  NUM2LONG because clang makes compile error by this narrowing
-	  conversion.
-	* process.c (rb_run_exec_options_err): ditto.
-
-Fri Jan 28 02:37:18 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* re.c (rb_reg_raise): add GC guard to prevent intermediate
-	  variable from GC.
-
-Fri Jan 28 02:35:41 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* hash.c (rb_hash_fetch_m): add GC guard to prevent intermediate
-	  variable from GC.
-
-Fri Jan 28 01:33:51 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_process.rb (TestProcess#test_too_long_path)
-	  TestProcess#test_too_long_path): Reduced string size from 100MB
-	  to 10MB. 100MB may cause no memory error. It isn't intended.
-
-Fri Jan 28 01:27:42 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_process.rb (TestProcess#test_too_long_path2):
-	  Factored out from test_too_long_path. A test should only do
-	  one test.
-
-Thu Jan 27 23:29:36 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c (st_foreach): check if unpacked.
-
-Thu Jan 27 23:14:19 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode-map): remove deprecated binding.
-	  use M-; instead.
-
-Thu Jan 27 21:58:32 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* bignum.c (rb_str_to_inum): get rid of too huge alloca().
-
-Thu Jan 27 21:43:29 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* object.c (rb_str_to_dbl): rewrite again. use ALLOCV instead
-	  rb_str_tmp_new().
-
-Thu Jan 27 21:41:47 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/win32.c: get rid of STRNDUPA(). It's dangerous API.
-
-Thu Jan 27 21:31:57 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/win32.c (rb_w32_aspawn): get rid of too huge alloca().
-	  [Bug #4330] [ruby-core:34898]
-
-Thu Jan 27 20:30:18 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/win32.c (rb_w32_spawn): get rid of too huge alloca().
-
-Thu Jan 27 18:49:53 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/win32.c (open_dir_handle): get rid of too huge alloca().
-
-Thu Jan 27 18:34:58 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* file.c (w32_io_info): get rid of too huge alloca().
-	  [Bug #4313] [ruby-core:34830]
-
-Thu Jan 27 18:19:51 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/win32.c (wstati64): get rid of too huge alloca().
-	  [Bug #4316] [ruby-core:34834]
-
-Thu Jan 27 15:11:52 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn, rb_w32_aspawn): get rid of too huge
-	  alloca(). this is the real fix of [ruby-core:34833].
-
-Thu Jan 27 12:46:25 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (ALLOC_ARGV_WITH_STR): fix void pointer arithmetic.
-
-Thu Jan 27 08:41:40 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (proc_exec_v, rb_proc_exec_n, rb_proc_exec)
-	  (proc_spawn_n, proc_spawn): get rid of too huge alloca().
-	  [ruby-core:34827], [ruby-core:34833]
-
-Thu Jan 27 08:32:17 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (ALLOCV): new API for exception-safe
-	  temporary buffer.  [ruby-core:34844]
-
-	* string.c (rb_alloc_tmp_buffer, rb_free_tmp_buffer):
-	  implementation of the API.
-
-Thu Jan 27 08:22:49 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln_find.c (dln_find_1): use rb_warning and return immediately
-	  if fname is longer than buffer.
-
-Wed Jan 26 22:57:30 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* class.c (clone_method): add GC guard to prevent intermediate
-	  variable from GC. [Bug #4321] [ruby-dev:43107]
-
-Wed Jan 26 22:45:16 2011  Tanaka Akira  <akr@fsij.org>
-
-	* template/id.h.tmpl: parenthesize macro arguments.
-
-Wed Jan 26 22:28:49 2011  CHIKANAGA Tomoyuki  <nagachika00@gmail.com>
-
-	* vm_eval.c (rb_throw_obj): add GC guard to prevent intermediate
-	  variable from GC. [Bug #4322] [ruby-dev:43108]
-
-Wed Jan 26 17:08:59 2011  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_decode0): OpenSSL::ASN1.decode
-	  should reject indefinite length primitive encodings as that is
-	  illegal. Patch by Martin Bosslet. See #4324.
-
-Wed Jan 26 10:36:28 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (=~): documentation fix; the return value is nil when
-	  it doesn't match. patched by Andrei Kulakov [ruby-core:34562]
-
-Tue Jan 25 08:41:58 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln_find.c (dln_find_1): omit too long pathnames.
-
-Tue Jan 25 08:28:19 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_resize): get rid of out-of-bound access.
-
-Tue Jan 25 07:48:22 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_thread.rb: remove unused variables.
-
-Tue Jan 25 07:45:44 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_thread.rb (TestThread#test_condvar_nolock_2): get
-	  rid of method redefined.
-
-Tue Jan 25 07:00:52 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_string_value_cstr): rb_str_modify can change
-	  RSTRING_PTR.
-
-Tue Jan 25 03:24:28 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ruby/test_thread.rb: Added various ConditionVariable tests.
-
-Mon Jan 24 22:26:33 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* object.c (rb_str_to_dbl): Fix again. use rb_str_tmp_new()
-	  instead ALLOC_N.
-
-Mon Jan 24 21:50:48 2011  Tanaka Akira  <akr@fsij.org>
-
-	* vm_insnhelper.h: parenthesize macro arguments.
-
-Mon Jan 24 21:28:34 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* object.c (rb_str_to_dbl): use ALLOC_N instead ALLOCA_N because
-	  ALLOC_N may cause stack overflow.
-
-Mon Jan 24 21:04:45 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_invalid_str): prevent intermediate variable from GC.
-	  [ruby-core:34820]
-
-Sun Jan 23 23:01:54 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/io/console/test_io_console.rb: Don't run test if the system
-	  don't support io/console.
-
-Sun Jan 23 22:17:07 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/fiddle/test_fiddle.rb: Don't run test if the system don't support
-	  fiddle.
-
-	* test/fiddle/test_function.rb: ditto.
-	* test/fiddle/test_closure.rb: ditto.
-
-Sun Jan 23 11:39:18 2011  Tanaka Akira  <akr@fsij.org>
-
-	* vm_exec.h: parenthesize macro arguments.
-
-Sun Jan 23 10:33:02 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/fake.rb.in (ruby): suppress warnings.
-
-Sun Jan 23 08:00:09 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_nth_len, str_utf8_nth): return the rest length together.
-
-	* string.c (rb_str_substr): get rid of measure the length always
-	  to improve performance for huge string.  [ruby-core:34648]
-
-Sun Jan 23 00:40:10 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/test_syslog.rb: Fix to make a lot of test failure if
-	  the platform doesn't support syslog.
-
-Sat Jan 22 11:49:55 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb: fixing merge key support
-	  when multiple merge keys are specified.
-
-	* test/psych/test_merge_keys.rb: tests for multi-merge key support
-
-Sat Jan 22 11:33:04 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb: merge keys are actually
-	  part of YAML 1.1, so they should be supported.  Remove warning and
-	  merge keys to parent.  [ruby-core:34679]
-
-	* test/psych/test_merge_keys.rb: test for merge keys
-
-Sat Jan 22 10:25:19 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/parser.c (parse): add the file name to the exception when
-	  parse errors occur.
-
-	* test/psych/test_parser.rb: test for parse error file name
-
-Sat Jan 22 10:12:30 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/parser.c (parse): fix assertion error when reusing a
-	  parser after an exception has been raised
-
-	* test/psych/test_parser.rb: test for assertion error
-
-Sat Jan 22 04:09:22 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/nodes/node.rb: Make Psych::Nodes::Node
-	  enumerable.
-
-	* ext/psych/lib/psych/visitors/depth_first.rb: Add a depth-first
-	  visitor to enumerate over a YAML AST in a depth-first fashion
-
-	* test/psych/nodes/test_enumerable.rb: test for enumerating nodes
-
-	* test/psych/visitors/test_depth_first.rb: test for depth-first
-	  visitor
-
-Sat Jan 22 00:53:42 2011  Tanaka Akira  <akr@fsij.org>
-
-	* vm_core.h: parenthesize macro arguments.
-
-Fri Jan 21 18:15:09 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: should not use -Werror=* flags while conftests.
-
-Fri Jan 21 09:17:00 2011  Luis Lavena  <luislavena@gmail.com>
-
-	* configure.in: Fix incorrectly detected x86_64-w64-mingw32 due
-	  canonalization of target_os. Bug #3889 [ruby-core:32634]
-
-Thu Jan 20 23:44:00 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: Fix rb_cv_va_args_macro was broken. We are using
-	  -Werror=implicit-function-declaration compile option. therefore
-	  we need a function declaration explicitly.
-
-Thu Jan 20 23:58:02 2011  Tanaka Akira  <akr@fsij.org>
-
-	* node.h: parenthesize macro arguments.
-
-Thu Jan 20 23:25:28 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: Add '#include <stdlib.h>' to
-	  rb_cv_localtime_overflow test too. It's reported by Tomoyuki
-	  Chikanaga. Thanks.
-
-Thu Jan 20 16:11:00 2011  Kenta Murata <mrkn@mrkn.jp>
-
-	* README.EXT, README.EXT.ja: You shouldn't choose ``conftest.c'' as a
-	  name of a source file.
-
-Thu Jan 20 12:15:44 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: Add stdlib.h inclusion into rb_cv_negative_time_t
-	  test because it's required for exit(3). The patch is
-	  created by Tomoyuki Chikanaga. [Bug #4287] [ruby-dev:43060]
-
-Thu Jan 20 11:39:41 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/webrick/utils.rb (TestWEBrick::RubyBin): test CGI does not need
-	  to load rubygems.  if it activated, ruby raises LoadError about
-	  rbconfig.rb.
-
-Thu Jan 20 09:19:42 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/json_tree.rb: Fix JSON emit for
-	  DateTime and Time classes.
-
-	* test/psych/test_json_tree.rb: test for JSON emit
-
-Thu Jan 20 08:02:46 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/coder.rb (represent_object): arbitrary objects
-	  may be passed to the Psych::Coder object.
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: support for visiting
-	  arbitrary objects set on the coder.
-
-	* test/psych/test_coder.rb: supporting test case.
-
-Thu Jan 20 06:03:17 2011  Tanaka Akira  <akr@fsij.org>
-
-	* method.h: parenthesize macro arguments.
-
-Wed Jan 19 13:16:05 2011  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/commands/sources_command.rb: Finish removing code,
-	  (fixes sources command test).
-
-Wed Jan 19 13:04:16 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* proc.c (proc_call): Add gc guard to avoid segfault. The fix
-	  is created by Tomoyuki Chikanaga. [Bug #4238][ruby-dev:42963]
-
-Wed Jan 19 12:31:28 2011  Eric Hodel <drbrain@segment7.net>
-
-	* lib/rubygems.rb: Since gem_prelude requires rubygems, enable
-	  custom_require always.
-
-Wed Jan 19 12:08:08 2011  Eric Hodel <drbrain@segment7.net>
-
-	* lib/rubygems/commands/dependency_command.rb: Remove require of
-	  deleted file.
-	* lib/rubygems/commands/fetch_command.rb: ditto
-	* lib/rubygems/commands/setup_command.rb: ditto
-	* lib/rubygems/commands/sources_command.rb: ditto
-	* lib/rubygems/commands/specification_command.rb: ditto
-
-Wed Jan 19 08:13:59 2011  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/rubygems*: Import rubygems 1.5.0 (release candidate)
-	* test/rubygems: Ditto
-
-Tue Jan 18 23:31:01 2011  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y: avoid NULL reference.  [ruby-dev:43067]
-
-Wed Jan 19 02:54:04 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vsnprintf.c (cvt): set first byte of buf to NUL for the case when
-	  no bytes are written to the buf. [ruby-dev:43062]
-
-Tue Jan 18 23:04:51 2011  Tanaka Akira  <akr@fsij.org>
-
-	* gc.h: parenthesize macro arguments.
-
-Tue Jan 18 18:31:14 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
-
-	* lib/irb/completion.rb: Irb tab completion support for XX::method
-	  forms.
-
-Tue Jan 18 15:05:55 2011  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb: added RDoc document for logging message escape
-	  by Hal Brodigan. See #3869
-
-Tue Jan 18 07:53:52 2011  Tanaka Akira  <akr@fsij.org>
-
-	* eval_intern.h: parenthesize macro arguments.
-
-Tue Jan 18 04:42:44 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/parser.rb (Mark): Adding a class to wrap
-	  marker information
-
-	* ext/psych/parser.c (mark): Add a method to return the mark object
-	  for the parser
-
-	* test/psych/test_parser.rb: tests for the Mark class.
-
-Tue Jan 18 02:46:55 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/json_tree.rb (visit_String): JSON
-	  strings should be dumped with double quotes. [ruby-core:34186]
-
-	* test/psych/test_json_tree.rb: test for double quotes
-
-Mon Jan 17 23:36:33 2011  Tanaka Akira  <akr@fsij.org>
-
-	* array.c (rb_ary_times): less MEMCPY calls.
-
-Mon Jan 17 22:54:33 2011  Tanaka Akira  <akr@fsij.org>
-
-	* debug.h: parenthesize macro arguments.
-
-Mon Jan 17 21:40:25 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): revert r30549.
-
-Sun Jan 16 20:55:45 2011  Tanaka Akira  <akr@fsij.org>
-
-	* vsnprintf.c: parenthesize macro arguments.
-
-Sat Jan 15 11:57:30 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (warnflags): add -Werror=implicit-function-declaration
-	  if available.
-
-	* lib/mkmf.rb (init_mkmf): ignore warnings in mkmf tests.
-
-	* test/mkmf/base.rb (setup, teardown): restore config values.
-
-	* test/mkmf/test_flags.rb: split from test_find_executable.rb.
-
-Sat Jan 15 10:04:14 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): autoload rubygems.
-
-	* tool/compile_prelude.rb (Prelude#initialize): ignore empty
-	  preludes.
-
-	* ruby.c (ruby_init_prelude): get rid of global namespace
-	  pollution.
-
-Sat Jan 15 09:42:12 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/io.h: missing prototypes.
-
-Fri Jan 14 23:25:55 2011  Tanaka Akira  <akr@fsij.org>
-
-	* vm_method.c: parenthesize macro arguments.
-
-Fri Jan 14 15:32:29 2011  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/net/imap/test_imap.rb: call neither logout nor disconnect
-	  unless connected.  patch by Kazuhiro NISHIYAMA.  [ruby-dev:42860]
-
-Fri Jan 14 14:56:57 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/imap.rb: use bytesize for binary strings.
-	  patched by Yoshimasa Niwa. [ruby-core:34222]
-
-Fri Jan 14 14:01:12 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* pack.c (pack_unpack): the resulted string of unpack('M') must have
-	  ASCII-8BIT encoding (and ENC_CODERANGE_VALID). [ruby-core:34482]
-
-Fri Jan 14 13:38:58 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzfile_check_footer): ISIZE (Input SIZE) in
-	  gzip's header is the size of uncompressed input data modulo 2^32.
-	  [ruby-core:34481] http://www.ietf.org/rfc/rfc1952.txt
-
-Fri Jan 14 11:36:25 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* configure.in, win32/Makefile.sub (RUNRUBY): require path should
-	  include "." because rbconfig.rb is there.
-
-Fri Jan 14 10:40:11 2011  Ryan Davis  <ryan@lust.local>
-
-	* gem_prelude.rb: Just require rubygems. Fixes rubygems 1.4.
-	* lib/rubygems.rb: removed all Gem::Quickloader code.
-	* ruby.c: renamed ruby_init_gems to ruby_init_prelude. Set
-	  $disable_rubygems since there is no fine grained mechanism to
-	  skip parts of the prelude. Open to suggestions on how to do this
-	  better.
-	* test/*.rb: Load path isn't set up correctly, so add
-	  --disable-gems as needed to failing tests that are explicitly
-	  testing stderr w/ ==.
-
-Fri Jan 14 07:30:47 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_next_argv): go advance when the next file cannot be
-	  read.  [ruby-core:34446]
-
-Thu Jan 13 20:49:19 2011  Tanaka Akira  <akr@fsij.org>
-
-	* vm_insnhelper.c: parenthesize macro arguments.
-
-Thu Jan 13 13:21:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* vm_dump.c: delete dashes to make lines 80 chars, Patched by
-	  Shota Fukumori (sora_h).  [Bug #4275] [ruby-dev:43021]
-
-Thu Jan 13 13:21:00 2011  Kenta Murata  <mrkn@mrkn.jp>
-
-	* vm_dump.c: fix misspelling of CrashReporter, Patched by Shota
-	  Fukumori (sora_h).  [Bug #4275] [ruby-dev:43021]
-
-Thu Jan 13 06:27:29 2011  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* error.c: Exception#to_s should actually call to_s.
-
-Thu Jan 13 00:32:54 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* addr2line.c (get_nth_dirname): decrement the directory index
-	  because the index specifies the index of given included_directories
-	  which is separated by NUL and its index is begun from 1.
-	  Note that 0 specifies the current directory of the compilation.
-	  see also http://www.dwarfstd.org/doc/dwarf-2.0.0.pdf
-
-Thu Jan 13 00:06:38 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_f_syscall): Add warning messages. [ruby-core:34062]
-
-Thu Jan 13 00:00:07 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_f_syscall): Some syscall return unsigned or pointer value.
-	  Therefore we should only check the result is -1 or not.
-	  [ruby-core:34062]
-
-Wed Jan 12 23:55:48 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_f_syscall): Add 64bit Linux support. Some syscall takes
-	  long type arguments.
-
-Wed Jan 12 19:37:10 2011  Tanaka Akira  <akr@fsij.org>
-
-	* vm_dump.c: parenthesize macro arguments.
-
-Wed Jan 12 19:28:23 2011  Tanaka Akira  <akr@fsij.org>
-
-	* vm.c (thread_free): reset ruby_current_thread if it points the
-	  thread to free.
-	* gc.c (slot_sweep): don't call RUBY_VM_SET_FINALIZER_INTERRUPT if
-	  there is no current thread.
-	  [ruby-dev:43000]
-
-Wed Jan 12 19:09:29 2011  Tanaka Akira  <akr@fsij.org>
-
-	* enum.c (sort_by_i): reenter check more strictly.
-	  (sort_by_cmp): ditto.
-	  [ruby-dev:43003] reported by Usaku NAKAMURA.
-
-Wed Jan 12 16:25:12 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/net/http.rb (Net::HTTP#connect): makes it timeout during
-	  SSL handshake too. [ruby-core:34203]
-	  Patch by Marc Slemko.
-
-	* test/net/http/test_http.rb (TestNetHTTP_v1_2#test_timeout_during_HTTP_session):
-	  test for [ruby-core:34203]
-
-	* test/net/http/test_https.rb (TestNetHTTPS#test_timeout_during_SSL_handshake):
-	  ditto.
-
-Wed Jan 12 16:24:53 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/readline/extconf.rb: new checks for RL_PROMPT_START_IGNORE
-	  and RL_PROMPT_END_IGNORE. [ruby-core:34331]
-
-	* ext/readline/readline.c: enables USE_INSERT_IGNORE_ESCAPE only if
-	  RL_PROMPT_{START,END}_IGNORE are available to get rid of compilation
-	  error with libedit.
-
-Wed Jan 12 15:53:49 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* README.EXT.ja (rb_ensure): typo.
-
-Wed Jan 12 11:33:46 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* addr2line.c: OpenBSD uses the elf_abi.h header file instead of the
-	  elf.h header file. patched by Jeremy Evans [ruby-core:34384]
-
-Wed Jan 12 03:59:36 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/webrick/test_cgi.rb: Removes usage of deprecated
-	  :RequestHandler option.
-	  patched by Peter Weldon [ruby-core:34010]
-
-	* test/webrick/test_httpproxy.rb: ditto.
-
-	* test/webrick/test_httpserver.rb: Add a test of the deprecation
-	  behaviour.
-
-Wed Jan 12 08:37:07 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (hash_i): return different values for inverse hash.
-	  [ruby-core:34334]
-
-Tue Jan 11 20:32:59 2011  Tanaka Akira  <akr@fsij.org>
-
-	* variable.c: parenthesize macro arguments.
-
-Tue Jan 11 13:06:38 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* array.c (rb_ary_resize): should care of embedded array when extending
-	  the array.
-
-	* array.c (rb_ary_resize): need to set capa when changing the real
-	  size of the array.
-	  these are latent bugs.
-
-Mon Jan 10 22:46:43 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/defines.h (CASEFOLD_FILESYSTEM): HFS+ is case
-	  insensitive.
-
-	* load.c (loaded_feature_path, rb_feature_p, load_lock): on a
-	  case-insensitive filesystem, loaded features search should
-	  ignore case.  [ruby-core:34297]
-
-Mon Jan 10 21:34:12 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (showflags): show LD commands.
-
-Mon Jan 10 14:32:55 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_method.rb (TestMethod#test_define_method): method
-	  transplanting between class and module is impossible.
-
-Mon Jan 10 13:51:17 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/rdoc-mode.el (rdoc-mode): show trailing whitespace.
-
-Mon Jan 10 11:22:02 2011  Tanaka Akira  <akr@fsij.org>
-
-	* util.c: parenthesize macro arguments.
-
-Mon Jan 10 07:41:31 2011  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* misc/README: mention rdoc-mode.el and ruby-style.el.
-
-Sun Jan  9 20:37:21 2011  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c: parenthesize macro arguments.
-
-Sun Jan  9 16:31:53 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* io.c (Kernel.#syscall): implemented on LP64/LLP64 environments too.
-	  also uses __syscall if available for *BSD on 64bit architecture.
-	  [ruby-core:34062]
-
-Sun Jan  9 16:31:34 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/locale.rb (IRB::Locale::LOCALE_NAME_RE):
-	  some platform has a locale without territory but with
-	  encoding.
-	  (#each_sub_locale): ditto.
-
-Sun Jan  9 14:47:50 2011  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c: apply a patch from Nobuyoshi Nakada.
-	  fixed #3616 [ruby-core:31484] IRB + readline incorrectly counts
-	  non-printing characters in prompt
-
-Sat Jan  8 21:47:26 2011  Tanaka Akira  <akr@fsij.org>
-
-	* enum.c (enum_sort_by): use rb_ary_resize.
-	  (ary_cutoff): removed.
-
-Sat Jan  8 21:24:17 2011  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (swapf): compilation condition simplified.
-	  (swapd): ditto.
-
-Sat Jan  8 20:51:25 2011  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (swapd): remove duplicated code.
-
-Sat Jan  8 19:28:55 2011  Tanaka Akira  <akr@fsij.org>
-
-	* thread.c: parenthesize macro arguments.
-
-Fri Jan  7 23:07:40 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): backref needs to capture.
-
-Fri Jan  7 21:57:22 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode-variables), misc/ruby-style.el:
-	  show trailing whitespace.
-
-	* misc/ruby-mode.el (ruby-font-lock-syntactic-keywords): highlight
-	  regexp after open bracket.  [ruby-core:34183]
-
-Fri Jan  7 00:37:35 2011  Tanaka Akira  <akr@fsij.org>
-
-	* string.c: parenthesize macro arguments.
-
-Thu Jan  6 22:42:02 2011  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigmul1_karatsuba): avoid overflow that make assertion
-	  fail in certain case.  this patch is contributed from Ray Chason
-	  <chasonr at gmail.com> in personal communication.
-
-Thu Jan  6 20:55:49 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): ignore rest from first dot from
-	  TARGET to generate init function name.
-	  this is followup of r30464.
-
-Thu Jan  6 11:27:01 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/json/tree_builder.rb (start_mapping): tags
-	  should not be included in JSON mapping
-
-Thu Jan  6 09:23:33 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/net/protocol.rb (eof?): BufferedIO should proxy eof? to the
-	  underlying IO object.
-
-Thu Jan  6 09:12:31 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/mkmf.rb (configuration): fixing gsub when multiple error flags
-	  are passed to GCC.
-
-Thu Jan  6 05:25:49 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_modify): export.
-
-Thu Jan  6 05:14:41 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (get_strio, strio_set_string)
-	  (strio_reopen): check if frozen.  [ruby-core:33648]
-
-Thu Jan  6 05:10:58 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_resize): new utility function.  [ruby-dev:42912]
-
-Thu Jan  6 05:03:26 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (init_funcname_len): ignore rest from first dot.
-	  [ruby-dev:41774]
-
-Thu Jan  6 02:55:48 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: use YAML 1.0 output
-	  format for serializing nil values.  Thanks Eric Hodel!
-
-	* test/psych/test_nil.rb: test for nil values
-
-Wed Jan  5 14:21:34 2011  Mark Dodwell  <hi@mkdynamic.co.uk>
-
-	* string.c: fix rdoc typo.
-	  https://github.com/shyouhei/ruby/pull/3
-
-Wed Jan  5 14:06:01 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/rdoc/test_rdoc_options.rb (TestRDocOptions#test_check_files):
-	  skip on Windows because chmod 0 doesn't mean unreadable by owner.
-
-Wed Jan  5 13:56:54 2011  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/net/http.rb (Net::HTTP#get): A header hash given should not
-	  be modified.
-
-Wed Jan  5 12:10:08 2011  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/dl/{cfunc.c,dl.h,handle.c}, ext/fiddle/fiddle.{h,c}: Use _WIN32
-	  rather than checking for windows.h.  Thanks Jon Forums!
-	  [ruby-core:33977]
-
-Sat Jan  1 17:02:50 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/locale.rb (IRB::Locale#search_file): make it possible
-	  to load a localization from a gem.
-	  (IRB::Locale#lc_path): obsoleted because of the change of #search_file
-	  (IRB::Locale#each_localized_path): new private method, based on
-	  lc_path
-	  (IRB::Locale#find): follows the change of #search_file.
-	  (IRB::Locale#load): removed duplicate with #find.
-
-Sat Jan  1 11:44:42 2011  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c: parenthesize macro arguments.
-
-Sat Jan  1 11:10:29 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c: take care of platforms where long is bigger
-	  than int.
-
-Sat Jan  1 11:03:58 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* NEWS (optparse): shell completion support.
-
-	* misc/README (rb_optparse.{bash,zsh}): for shell completion.
-
-	* include/ruby/intern.h (VALUE rb_ary_print_on): I have never seen
-	  this function anywhere.
-
-Sat Jan  1 04:20:11 2011  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_write_console): don't raise exception when
-	  the conversion is for writing to console.
-	  Patched by Heesob Park [ruby-core:33999]
-
-Fri Dec 31 12:02:06 2010  Tanaka Akira  <akr@fsij.org>
-
-	* enum.c (enum_sort_by): use less temporary objects.
-
-Fri Dec 31 11:46:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (warnflags), lib/mkmf.rb (configuration): turn
-	  warnings into errors only for bundled extensions.
-	  [ruby-core:33815]
-
-Fri Dec 31 11:15:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (sizeof): zlib.h mistakenly assumes the result
-	  of sizeof to be int, not size_t.
-
-Fri Dec 31 10:27:34 2010  Tanaka Akira  <akr@fsij.org>
-
-	* st.c: parenthesize macro arguments.
-
-Fri Dec 31 03:23:26 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vsnprintf.c (BSD__uqtoa): Fix overflow when long != quad_t.
-	  patched by Peter Weldon <peter.weldon AT null.net>
-	  [ruby-core:33985]
-
-Fri Dec 31 03:00:34 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* Makefile.in: remove unnecessary semicolons.
-
-Thu Dec 30 23:09:47 2010  wanabe  <s.wanabe@gmail.com>
-
-	* vm.c (vm_define_method): guard iseq from GC while method definition.
-	  [ruby-dev:42832]
-
-Thu Dec 30 20:18:32 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/Makefile.sub: ditto.
-
-Thu Dec 30 20:57:09 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* Makefile.in: Check V=1 argument if run "make clean" or similar.
-
-Thu Dec 30 20:41:50 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* Makefile.in: Kill ugly line continuation.
-
-Thu Dec 30 11:49:40 2010  Tanaka Akira  <akr@fsij.org>
-
-	* sprintf.c: parenthesize macro arguments.
-
-Wed Dec 29 21:20:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (maygvl_copy_stream_wait_readwrite): define if USE_SENDFILE
-
-Wed Dec 29 20:37:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: strip current directory prefix.
-
-	* enc/depend (clean): remove name2ctype.h when out-of-place build.
-
-	* win32/Makefile.sub (clean-enc): pass V to inferior make.
-
-Wed Dec 29 18:23:46 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* re.c (rb_reg_expr_str): need to escape if the coderange is invalid.
-
-Wed Dec 29 10:06:51 2010  Tanaka Akira  <akr@fsij.org>
-
-	* signal.c: parenthesize macro arguments.
-
-Wed Dec 29 07:22:15 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rake/rdoctask.rb: Deprecate in favor of rdoc/task.
-
-Wed Dec 29 07:07:06 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc: Import RDoc 3.1
-
-Tue Dec 28 18:36:38 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* error.c, include/ruby/intern.h (rb_compile_error_with_enc): new
-	  function to raise syntax error, with source encoding'ed message.
-
-	* parse.y (compile_error): use above function.
-	  [ruby-core:33951] (#4217)
-
-Tue Dec 28 07:37:38 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c: parenthesize macro arguments.
-
-Tue Dec 28 07:17:11 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add ARGF.write and so on.
-
-Tue Dec 28 07:12:38 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add new magic-comment. (warn-indent) [ruby-core:25442]
-
-Tue Dec 28 04:32:37 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/fiddle/extconf.rb: check for windows.h while building fiddle.
-	  Thanks Jon Forums! [ruby-core:33923]
-
-Tue Dec 28 01:45:12 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: Add Zlib.deflate and Zlib.inflate.
-	  [ruby-dev:42833]
-
-Mon Dec 27 21:22:33 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/configure.bat: Remove obsoleted coding rule. Now, we
-	  don't support to build on Windows 95/98 and Me.
-
-Mon Dec 27 18:27:13 2010  Tanaka Akira  <akr@fsij.org>
-
-	* re.c: parenthesize macro arguments.
-
-Mon Dec 27 15:22:23 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/README.win32: note to need NT based OS to build ruby.
-
-Mon Dec 27 12:14:46 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (EXTMK_ARGS): specify to pass macro V, because nmake
-	  doesn't pass it via MAKEFLAGS.
-
-Mon Dec 27 10:33:43 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/zlib/zlib.c (Init_zlib): Add Zlib.deflate and Zlib.inflate.
-	  [ruby-dev:42833]
-
-Mon Dec 27 07:38:07 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* misc/rb_optparse.zsh: add compdef for generator.
-
-Mon Dec 27 07:32:07 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/optparse.rb (OptionParser#compsys): escape brackets too.
-	  [ruby-dev:42754]
-
-Mon Dec 27 01:30:08 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: add IF_NAMESIZE.
-	  add a default for INET6_ADDRSTRLEN.
-
-Sun Dec 26 23:49:47 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* win32/Makefile.sub: suppress a strange error message when RMALL
-	  found no such file.
-	* win32/rmall.bat: new.
-
-Sun Dec 26 21:23:23 2010    <kosaki.motohiro@gmail.com>
-
-	* win32/Makefile.sub: fix 'nmake clean-enc' breakage since r28322.
-
-Sun Dec 26 22:25:07 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/ripper/depend (ripper.y): fix messages with nmake.
-	  [ruby-dev:42896]
-
-Sun Dec 26 22:24:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): get rid of warnings caused by
-	  -Wdeclaration-after-statement on cygwin.
-
-Sun Dec 26 20:28:34 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* process.c (before_exec): add small comment.
-
-Sun Dec 26 20:52:21 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: define INET_ADDRSTRLEN as 16 if not
-	  available.  fix compilation error on mswin32-60.  reported by nobu.
-
-Sun Dec 26 19:37:37 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c: define IFNAMSIZ if not available.
-	  fix compilation error on mingw32.  reported by nobu.
-
-Sun Dec 26 12:16:29 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/ri/paths.rb (RDoc::RI::Paths::HOMEDIR): no exception if
-	  HOME is not set.  [ruby-core:33867]
-
-Sun Dec 26 11:39:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): missing ripper rule.  i.e., `a::B ||= c 1'.
-	  http://twitter.com/#!/wannabe53/status/18797576396472321
-	  http://twitter.com/#!/wannabe53/status/18798416150663168
-
-Sun Dec 26 11:15:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/with_different_ofs.rb (DifferentOFS): should not affect
-	  original classes.
-
-Sun Dec 26 09:35:07 2010  Tanaka Akira  <akr@fsij.org>
-
-	* rational.c: parenthesize macro arguments.
-
-Sun Dec 26 09:22:19 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (rb_if_indextoname): new function to abstract
-	  environments without if_indextoname.
-	  (inspect_ipv6_multicast_if): new function to inspect
-	  IPV6_MULTICAST_IF.
-	  Socket::Option.new(:INET6, :IPV6, :MULTICAST_IF,
-	  [2].pack("I!")).inspect is
-	  "#<Socket::Option: INET6 IPV6 MULTICAST_IF eth0>".
-
-Sun Dec 26 04:31:15 2010  Luis Lavena  <luislavena@gmail.com>
-
-	* ext/dl/win32/registry.rb: Corrected RegCreateKeyExA signature.
-	  Patch by Rafal Michalski [ruby-core:33874] [Ruby 1.9-Bug#4203]
-
-Sun Dec 26 02:31:58 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (advice_arg_check): Change argument check.
-	  Now, an unsupported advice makes NotImplementedError.
-	  [ruby-dev:42887] [Ruby 1.9-Feature#4204]
-
-Sun Dec 26 03:00:53 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/socket/extconf.rb: Fix build error which was introduced r30372.
-
-Sun Dec 26 01:37:10 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: check the existence of if_indextoname().
-
-	* ext/socket/option.c: yesterday's akr's commits destroyed the build of
-	  some unrelated platforms (such as Windows).
-
-Sat Dec 25 23:29:11 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_ipv4_add_drop_membership): new function
-	  to inspect struct ip_mreq and struct ip_mreqn for
-	  IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
-	  Socket::Option.new(:INET, :IP, :ADD_MEMBERSHIP,
-	  [239,255,99,81, 0,0,0,0].pack("CCCCCCCC")).inspect is now
-	  "#<Socket::Option: INET IP ADD_MEMBERSHIP 239.255.99.81 0.0.0.0>".
-	  (inspect_ipv4_multicast_if): new function to inspect struct in_addr
-	  and struct ip_mreqn for IP_MULTICAST_IF.
-	  Socket::Option.new(:INET, :IP, :MULTICAST_IF,
-	  [192,168,0,7].pack("CCCC")).inspect is now
-	  "#<Socket::Option: INET IP MULTICAST_IF 192.168.0.7>".
-
-	* ext/socket/extconf.rb: check struct ip_mreq and struct ip_mreqn.
-
-Sat Dec 25 22:49:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/csv: DifferentOFS needs to be include in each classes.
-
-	* test/digest/test_digest_extend.rb (TestDigestExtend#setup):
-	  should not depend on the result of previous tests
-
-	* test/with_different_ofs.rb (DifferentOFS::WithDifferentOFS): give
-	  name.
-
-	* test/with_different_ofs.rb (DifferentOFS): test suite for test
-	  suites affected by $,.
-
-	* test/digest/test_digest_extend.rb (TestDigestExtend): should not
-	  assume $, invariant.
-
-	* test/csv/test_data_converters.rb, test/csv/test_table.rb: don't
-	  call setup within tests.
-
-Sat Dec 25 20:01:40 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (pipe_open): Added rb_thread_atfork(). We must reinitialize
-	  GVL at new process creation.
-
-Sat Dec 25 18:26:55 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_ipv6_mreq): new function to inspect
-	  struct ipv6_mreq for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
-	  Socket::Option.new(:INET6, :IPV6, :JOIN_GROUP,
-	  [0xff12,0,0,0,0,0,0,1, 2].pack("nnnnnnnnI!")).inspect is now
-	  "#<Socket::Option: INET6 IPV6 JOIN_GROUP ff12::1 eth0>".
-
-	* ext/socket/extconf.rb: check struct ipv6_mreq.
-
-Sat Dec 25 18:04:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/csv.rb (CSV.foreach): 'rb' mode is defaulted in open.
-
-	* lib/csv.rb (CSV#init_separators): cannonicalize encoding options
-	  as Encoding objects.
-
-Sat Dec 25 18:30:34 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_thread_atfork): Add small comment why we need
-	  reset random seed.
-
-Sat Dec 25 17:33:55 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/csv/base.rb (TestCSV.with_different_ofs): give name to
-	  anonymous classes.
-
-	* lib/csv.rb (CSV#init_separators): use IO#gets with length
-	  parameter to get rid of wrong conversion.
-
-	* lib/csv.rb (CSV::foreach, CSV#initialize): directly use encoding
-
-	* lib/csv.rb, test/csv: should not assume $, invariant.
-
-Sat Dec 25 16:08:06 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* signal.c: change rb_atomic_t definition from uchar to uint.
-
-Sat Dec 25 15:04:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/csv/test_encodings.rb (TestEncodings#setup): fix evil test
-	  suite writing to the source directory.
-
-Sat Dec 25 15:08:08 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/pty/pty.c (chfunc): Added rb_thread_atfork_before_exec().
-	  We must reinitialize GVL at new process creation. Otherwise
-	  we may meet an insane deadlock. [Bug#4121][ruby-dev:42686]
-
-Sat Dec 25 14:27:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_extract_encoding_option): accept Encoding object as
-	  encoding: optional argument.  [ruby-dev:42884]
-
-Sat Dec 25 13:37:55 2010  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 2.0.2 r6093.
-
-Sat Dec 25 13:05:59 2010  Tanaka Akira  <akr@fsij.org>
-
-	* random.c: parenthesize macro arguments.
-
-Sat Dec 25 12:48:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_f_require_relative): don't omit return type.
-
-Sat Dec 25 11:06:00 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* load.c (rb_f_require_relative): Add documentation.
-
-Sat Dec 25 11:02:52 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzreader_gets): support optional length
-	  parameter.
-
-	* ext/zlib/zlib.c (gzfile_read, gzfile_readpartial): length should
-	  be long.
-
-Sat Dec 25 10:51:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/json/generator/generator.{c,h} (fbuffer_free_only_buffer):
-	  unused.
-
-	* ext/openssl/ossl_pkcs5.c (ossl_pkcs5_pbkdf2_hmac): add casts.
-
-Fri Dec 24 08:46:04 2010  Tanaka Akira  <akr@fsij.org>
-
-	* process.c: parenthesize macro arguments.
-
-Thu Dec 23 19:17:14 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/net/imap/cacert.pem: updated because it has been expired.
-
-	* test/net/imap/server.crt: signed again because CA cert was expired.
-
-Thu Dec 23 11:16:52 2010  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y: parenthesize macro arguments.
-
-Thu Dec 23 11:00:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_check_type): check for type from extensions for ruby
-	  1.8.  see [ruby-core:33797].
-
-Thu Dec 23 08:12:59 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/net/smtp.rb: refactoring Net::SMTP#esmtp= to use an
-	  attr_accessor
-
-Thu Dec 23 06:35:41 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/net/smtp.rb: Net::SMTP should close the SSL connection if the
-	  connection verification fails.
-
-Thu Dec 23 01:47:58 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: remove #object_id. [ruby-dev:42840]
-
-Wed Dec 22 08:56:39 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add Module#private_constant and Module#public_constant.
-	  [ruby-dev:39685][ruby-core:32698]
-
-Wed Dec 22 07:59:23 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add IO#advise. [ruby-core:33110] [Ruby 1.9-Feature#4038]
-
-Tue Dec 21 23:45:31 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (Init_GC): move back object_id to Kernel. [ruby-dev:42840]
-
-Tue Dec 21 12:45:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (target_archs): remove temporary objects.
-
-	* enc/Makefile.in, enc/depend (clean): remove work directories.
-
-Tue Dec 21 07:39:12 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c: parenthesize macro arguments.
-
-Tue Dec 21 06:25:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/rexml/test_contrib.rb (ContribTester#test_pos): should not
-	  use fixed path name for tests.  [ruby-dev:42827]
-
-	* test/rexml/test_sax.rb (SAX2Tester#test_socket): should not use
-	  fixed port for tests.  [ruby-dev:42828]
-
-Tue Dec 21 06:10:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (setup_args), vm.c (invoke_block_from_c),
-	  vm_insnhelper.c (caller_setup_args): reverted r30241 and r30243
-	  except for the test.
-
-Tue Dec 21 01:41:42 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* io.c : add an extra byte to buffer for the specification of read
-	  in Windows. see [ruby-core:33460] and r29980. and, we have to
-	  discuss how to do this one byte.
-
-Tue Dec 21 01:18:06 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* error.c: Fix build error for win32. This regression was
-	  introduced by r30271.
-
-Tue Dec 21 00:59:40 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (thread_cleanup_func): Moved interrupted_lock
-	  destroying code from native_thread_destroy() to
-	  thread_cleanup_func() because it's platform independent logic.
-
-	* thread_win32.c (native_thread_destroy): ditto.
-	* thread_pthread.c (native_thread_destroy): ditto.
-
-Tue Dec 21 00:46:20 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (thread_cleanup_func): Don't touch native threading
-	  resource at fork. Sadly this is purely bandaid. We need to
-	  implement proper fix later. [Bug #4169] [ruby-core:33767]
-
-Tue Dec 21 00:22:44 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* error.c (exit_success_p): Check status code more carefully.
-	  status code may have garbage in upper bit.
-
-Mon Dec 20 23:12:37 2010  Tanaka Akira  <akr@fsij.org>
-
-	* node.c: parenthesize macro arguments.
-
-Mon Dec 20 20:04:41 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add #__id__ and #object_id. [ruby-dev:42778]
-
-Mon Dec 20 20:03:21 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread_pthread.c (native_thread_destroy): Fixed gvl_cond leak.
-
-Mon Dec 20 13:49:05 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* NEWS: Add item for RDoc 3.0.1
-
-	* lib/rdoc: Import RDoc 3.0.1, remove require for perl parser.
-
-Mon Dec 20 12:15:32 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc: Import RDoc 3.0.
-
-Mon Dec 20 01:55:03 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (Init_IO): Added O_DIRECT. This feature was proposed by
-	  Run Paint Run Run.
-	  [Feature #4015] [ruby-core:33018]
-
-Sun Dec 19 19:15:23 2010  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c: parenthesize macro arguments.
-
-Sat Dec 18 21:52:37 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* vsnprintf.c (BSD_vfprintf): suppress warning: "_WIN32" is not
-	  defined.
-
-Sat Dec 18 16:02:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (setup_args), vm.c (invoke_block_from_c),
-	  vm_insnhelper.c (caller_setup_args): fix of r30241. lambda block
-	  should check argument number.
-
-Sat Dec 18 14:42:29 2010  Tanaka Akira  <akr@fsij.org>
-
-	* load.c: parenthesize macro arguments.
-
-Sat Dec 18 10:07:04 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (setup_args, iseq_compile_each): optimize AMPER LAMBDA
-	  combination as block.
-
-Fri Dec 17 22:07:16 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (Init_GC): move #__id__ and #object_id to BasicObject.
-	  [ruby-dev:42778]
-
-Fri Dec 17 19:35:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/mkmf/base.rb (TestMkmf::FakeLog): capture output from mkmf.
-
-	* test/mkmf/test_find_executable.rb (test_find_executable):
-	  suppress meaningless differences for chkbuild.
-
-Fri Dec 17 13:26:54 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/setup.mak (BASERUBY): quit with an error when BASERUBY was not
-	  able to set, just like configure.in does. [ruby-dev:42782]
-
-Fri Dec 17 07:04:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* iseq.c: parenthesize macro arguments.
-
-Fri Dec 17 04:18:37 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* transcode.c (str_encode): Alter comment for better wording and ri
-	  output.
-
-Fri Dec 17 00:05:40 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* io.c (rb_io_advise): New API. IO#advise() allows to tell the
-	  ruby runtime how it expects to use a file handle. This feature
-	  can be improved a performance some situations.
-	  Note: This feature is mainly developed by Run Paint Run Run.
-	  Thank you! [ruby-core:33110] [Ruby 1.9-Feature#4038]
-
-	* io.c (do_io_advise): Helper function.
-	* io.c (io_advise_sym_to_const): ditto.
-
-Thu Dec 16 23:29:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/rbinstall.rb (bin-comm): use transformed name.
-	  [ruby-dev:42777]
-
-Thu Dec 16 21:52:07 2010  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: parenthesize macro arguments.
-
-Thu Dec 16 21:46:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/mkconfig.rb (RbConfig): honor ARCHFLAGS and RC_ARCHS to
-	  override embedded ARCH_FLAG value on universal-darwin.
-
-Thu Dec 16 19:50:12 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/{configure.bat,setup.mak,Makefile.sub} (PROGRAM_PREFIX,
-	  PROGRAM_SUFFIX): unite the differences of the names of macros of
-	  prefix and suffix.
-	  reported by HANEDA Norikatsu. [ruby-dev:42775]
-
-Thu Dec 16 08:04:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* node.h (RNode): match the type of flags to RBasic, and renamed
-	  nd_file as nd_reserved.
-
-	* iseq.c (set_relation), vm_insnhelper.c (vm_cref_push): nd_file
-	  is always zero-cleared.
-
-Thu Dec 16 07:22:30 2010  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/unit.rb: Imported minitest 2.0.1 r6079.
-
-Wed Dec 15 20:45:02 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/test/unit.rb (process_args): need to setup @help to print options.
-
-Wed Dec 15 11:19:33 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/zlib/test_zlib.rb (test_to_io): forgotten to fix with r30201.
-
-Wed Dec 15 11:07:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (simple_sendfile): enable on Mac OS X.
-
-	* io.c (nogvl_copy_stream_sendfile): moved precheck of copy length.
-
-	* io.c (nogvl_copy_stream_sendfile): should wait for both of
-	  read/write fds.
-
-Wed Dec 15 07:11:55 2010  Tanaka Akira  <akr@fsij.org>
-
-	* hash.c: parenthesize macro arguments.
-
-Wed Dec 15 04:02:00 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509extfactory_set_config):
-	  fix compile error when !HAVE_X509V3_SET_NCONF. Thanks
-	  Chikanaga-san. [ruby-dev:42761] [Ruby 1.9-Bug#4158]
-
-Wed Dec 15 03:41:31 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/ripper/test_parser_events.rb (TestRipper#test_block_variables):
-	  Limit address space 100MB instead 100KB. Quite frankly, This
-	  margin is too narrow to contain ruby. [ruby-dev:42763] [Bug#4159]
-
-Tue Dec 14 23:53:52 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (simple_sendfile): improve linux compatibility on FreeBSD,
-	  and now it works. But without cpuset -l 0, it still gets stuck.
-
-Tue Dec 14 20:31:33 2010  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c: parenthesize macro arguments.
-
-Tue Dec 14 18:31:48 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/test/unit.rb: help messages.
-
-Tue Dec 14 18:19:03 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (help): there is no reason to use the abbreviation for here.
-
-Tue Dec 14 15:03:46 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_io.rb (test_reopen, test_reinitialize): should close
-	  the temporary files.
-
-Tue Dec 14 14:24:15 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_io.rb (make_tempfile): change the prefix from 'foo'
-	  to 'test_io' because the old one is meaningless and inconvenient.
-
-	* test/ruby/test_io.rb (test_binmode_after_closed): the temporary file
-	  made by make_temfile is already closed.
-
-Tue Dec 14 13:52:19 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_io.rb (test_flush_in_finalizer[12]): should close
-	  temporary file because it's only used for taking pathname and
-	  unlinking the file after the end of the test (in GC phase).
-
-Tue Dec 14 13:34:33 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzfile_s_open): should close the IO if some error
-	  occurs in initializing.
-
-Tue Dec 14 13:04:16 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTPRequest#send_request_body_data):
-	  set binmode to tempfile.
-
-Tue Dec 14 12:55:46 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/zlib/test_zlib.rb (*): should close files associated with zlib.
-
-Tue Dec 14 11:30:17 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_argf.rb (test_inplace_rename_impossible): unlink
-	  the renamed temporary file on no_safe_rename platforms.
-
-	* test/ruby/test_argf.rb (test_readlines_limit_0,
-	  test_each_line_limit_0): should close argf because the associated
-	  Tempfile object cannot unlink the temporary file when it's gc'ed
-	  on some platforms (Windows, etc.)
-
-Tue Dec 14 11:27:07 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/minitest/unit.rb (Minitest::Unit#_run_suite): split test
-	  name and its time. Thiw allows to know test's name when you are
-	  running tests and meet a test which spends long time at realtime.
-
-Tue Dec 14 11:25:20 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: Add -Werror=declaration-after-statement to default
-	  warning flag. If you are using GCC, this flag is useful to
-	  prevent breaking VC build.
-
-Tue Dec 14 10:25:57 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_decode0): how many gcc-c99isms
-	  must a man mend; before he can build with VC? r30178
-
-Mon Dec 13 21:26:33 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (simple_sendfile): disable the use of sendfile(2) on
-	  FreeBSD. It blocks on TestIO#test_copy_stream_socket.
-
-Mon Dec 13 18:35:33 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c: define USE_SENDFILE on FreeBSD or DragonFly BSD.
-	  Remove Mac OS X because its argument is different from them.
-
-Mon Dec 13 12:00:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* file.c: parenthesize macro arguments.
-
-Mon Dec 13 11:21:14 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (simple_sendfile): added for BSD version of sendfile(2).
-
-Mon Dec 13 09:50:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTPRequest#set_form): Added to support
-	  both application/x-www-form-urlencoded and multipart/form-data.
-	  There is a similar API, Net::HTTPRequest#set_form_data, but
-	  to keep its compatibility this is newly added. [ruby-dev:42729]
-
-Sun Dec 12 23:45:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): fix for __goto__ and __label__
-	  where were totally broken.
-
-Sun Dec 12 22:45:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ID_H_INCLUDES): now id.h depends on vm_opts.h.
-
-Sun Dec 12 20:42:47 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* template/id.h.tmpl: suppress all warning: "SUPPORT_JOKE" is not
-	  defined.  [ruby-dev:42730]
-
-Sun Dec 12 20:35:07 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* misc/rb_optparse.zsh: update how to install.
-
-	* misc/rb_optparse.zsh: avoid error when setopt noclobber.
-
-	* lib/optparse.rb: fix typo. pointed out at
-	  <http://d.hatena.ne.jp/nagachika/20101207>.
-
-Sun Dec 12 13:27:35 2010  Tanaka Akira  <akr@fsij.org>
-
-	* eval_error.c: parenthesize macro arguments.
-
-Sun Dec 12 11:53:24 2010  Tanaka Akira  <akr@fsij.org>
-
-	* error.c: parenthesize macro arguments.
-
-Sun Dec 12 04:01:58 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): fix: extra back slash is added when
-	  the string is dummy encoding and includes \x22 or \x5C.
-
-Sun Dec 12 02:42:24 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/openssl/ossl_asn1.c: indefinite length BER to DER encoding is
-	  properly supported.  Thanks Martin Bosslet! [ruby-core:33082]
-
-Sat Dec 11 17:43:34 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/bigdecimal/bigdecimal.h: suppress "warning: 'VPrint' declared
-	  'static' but never defined".
-
-Sat Dec 11 09:24:57 2010  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c: parenthesize macro arguments.
-
-Sat Dec 11 08:12:48 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/openssl/ossl.c, ext/openssl/ossl_pkey_rsa.c: Document RSA, RSA
-	  encryption/decryption and PKCS #5 encryption/decryption.
-
-Sat Dec 11 06:23:41 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/openssl/ossl_x509name.c: include Comparable to provide #==.
-	  Document OpenSSL::X509::Name#<=>.  [Ruby 1.9-Feature#4116]
-
-Sat Dec 11 05:48:28 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: infinite loop on method_missing at loading.
-	  [ruby-dev:42716] [Ruby 1.9-Bug#4129]
-
-	* ext/tk/lib/multi-tk.rb: when no eventloop is running, ruby freezes at
-	  exit.
-
-Sat Dec 11 02:23:15 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/openssl/extconf.rb: try pkgconfig first, then fall back to
-	  normal have_library, etc.  Thanks Erik Hollensbe. [ruby-core:32406]
-
-Fri Dec 10 22:33:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* dln_find.c: parenthesize macro arguments.
-
-Fri Dec 10 20:05:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/id.h.tmpl (ruby_method_ids): suppress warnings.
-	  [ruby-dev:42730]
-
-Fri Dec 10 18:29:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): relatively called non-shared
-	  binary cannot be found in PATH, so use given pathname.
-
-Fri Dec 10 18:28:40 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (SCRIPTPROGRAMS): ignore backup files and etc.
-
-	* cygwin/GNUmakefile.in (scriptbin): set executable bit.
-
-	* tool/rbinstall.rb (install_recursive): always skip default ignored
-	  files.  if block is given, call it instead of calling install.
-
-	* tool/rbinstall.rb (bin-comm): use install_recursive.
-
-Fri Dec 10 18:12:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/mkmf/base.rb (TestMkmf#config_value): extract macro value from
-	  config.h.
-
-	* test/mkmf/test_sizeof.rb (TestMkmf::TestSizeof#test_sizeof_builtin),
-	  (TestMkmf::TestSizeof#test_sizeof_struct): more tests.
-
-	* lib/mkmf.rb (check_signedness): should use the prelude code.
-	  [ruby-dev:42731]
-
-	* lib/mkmf.rb (Logging.log_close): separate from Logging.logfile.
-
-	* test/mkmf/base.rb (TestMkmf::MKMFLOG): show mkmf.log at failures.
-
-	* test/mkmf/base.rb (TestMkmf#teardown): close log file for each tests.
-
-Fri Dec 10 11:36:43 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* compile.c (enum): remove a comma at end of enumerator list.
-
-	* constant.h (rb_const_flag_t): ditto.
-
-	* iseq.h (enum catch_type): ditto.
-
-	* iseq.h (enum defined_type): ditto.
-
-	* vm_core.h (enum iseq_type): ditto.
-
-	* vm_core.h (enum vm_special_object_type): ditto.
-
-Fri Dec 10 10:47:53 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* sprintf.c (_HAVE_SANE_QUAD_): Don't forget LP64, r30156.
-
-Fri Dec 10 10:37:17 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* sprintf.c (_HAVE_SANE_QUAD_): if a certain platform has LONG_LONG in
-	  8 byte, it might be sane quad. [ruby-core:33634]
-
-Fri Dec 10 10:07:59 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb: remove version 1.1 features.
-
-Fri Dec 10 02:18:02 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/openssl/ossl_x509store.c (ossl_x509stctx_cleanup): removing C
-	  implementation of `cleanup`.
-
-	* ext/openssl/lib/openssl/x509.rb: adding ruby implementation of
-	  `cleanup`.  OpenSSL::X509::StoreContext#cleanup is deprecated since
-	  reusing the underlying struct doesn't make sense. [ruby-dev:42546]
-
-Thu Dec  9 20:14:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (lvar_defined_gen, shadowing_lvar_gen, dvar_defined): no
-	  warnings for unused method and block arguments.
-	  [ruby-dev:42718] [ruby-dev:42724]
-
-Thu Dec  9 19:25:49 2010  Tanaka Akira  <akr@fsij.org>
-
-	* dln.c: parenthesize macro arguments.
-
-Thu Dec  9 18:51:06 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/webrick/accesslog.rb (WEBrick::AccessLog#format): support
-	  %{remote}p for logging remote (client) port number.
-	  [ruby-dev:42670]
-
-Thu Dec  9 11:00:30 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_dup): should copy contents only.  no instance
-	  variable, no class would be copied.  it would affect methods
-	  #sort, #reject, #transpose, #uniq, #compact, and #shuffle.
-	  [ruby-core:33640]
-
-	* array.c (rb_ary_reverse_m): ditto.
-
-	* array.c (rb_ary_rotate_m): ditto.
-
-Wed Dec  8 21:38:40 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/dl/lib/dl/struct.rb: clean a warning: assigned but unused
-	  variable. patched by Kouhei Yanagita. [ruby-dev:42722]
-
-	* ext/dl/lib/dl/import.rb: ditto.
-
-Wed Dec  8 21:36:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (shadowing_lvar_gen): fix line number.  [ruby-dev:42718]
-
-Wed Dec  8 20:37:11 2010  Tanaka Akira  <akr@fsij.org>
-
-	* dir.c: parenthesize macro arguments.
-
-Tue Dec  7 22:37:15 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* io.c (io_read): duplicate string if shared. [ruby-dev:42719]
-
-Tue Dec  7 22:31:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::Officious): separate completion
-	  options from --help.  [ruby-dev:42690]
-
-	* lib/optparse.rb (OptionParser::Completion#candidate),
-	  (OptionParser::Switch#compsys): remove unused variables.
-
-Tue Dec  7 22:05:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_loop): call default handler of the given
-	  hash, method, proc or [] method as fallback.  [ruby-dev:42692]
-
-Tue Dec  7 21:59:37 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rexml/light/node.rb: remove circular require.
-
-Tue Dec  7 21:56:01 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_light.rb: really suppress a warning.
-
-Tue Dec  7 21:51:57 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_light.rb: suppress a warning.
-
-Tue Dec  7 21:14:03 2010  Tanaka Akira  <akr@fsij.org>
-
-	* debug.c: parenthesize macro arguments.
-
-Tue Dec  7 21:06:38 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rexml/doctype.rb, test/rexml/test_doctype.rb: suppress warnings.
-	  [ruby-core:33305]
-	  Reported by Aaron Patterson. Thanks!!!
-
-Tue Dec  7 18:56:52 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb (String#kconv): fix typo and update rdoc.
-	  patched by Kouhei Yanagita [ruby-dev:42696]
-
-Tue Dec  7 20:32:11 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_doctype.rb: add Accessor to test case name.
-
-Tue Dec  7 20:31:02 2010  Kouhei Sutou  <kou@clear-code.com>
-
-	* test/rexml/test_doctype.rb: Doctype -> DocType.
-
-Tue Dec  7 20:29:23 2010  Kouhei Sutou  <kou@clear-code.com>
-
-	* test/rexml/test_doctype_mixin.rb: rename to ...
-	* test/rexml/test_doctype.rb: ... this to remove needless name.
-
-Tue Dec  7 17:03:16 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (xlist): supported the XLIST command, which is an
-	  extension by Apple and Google.  patch by Geoff Youngs.
-	  [ruby-core:33521]
-
-Tue Dec  7 08:00:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, win32/Makefile.sub (WERRORFLAG): flag to treat
-	  warnings as errors.
-
-	* lib/mkmf.rb (Logging.postpone): yield log file object.
-
-	* lib/mkmf.rb (xsystem): add options, :werror only right now.
-
-	* lib/mkmf.rb (with_werror): check as if warnings are errors.
-
-	* lib/mkmf.rb (convertible_int): make declaration conflict
-	  warnings errors not to pass wrong type.  [ruby-dev:42684]
-
-	* lib/mkmf.rb (COMMON_MACROS): get rid of conflicts.
-
-	* win32/Makefile.sub (WARNFLAGS): make declaration conflict
-	  warnings errors if possible.
-
-Sun Dec  7 21:16:10 2010  Tanaka Akira  <akr@fsij.org>
-
-	* cont.c: parenthesize macro arguments.
-
-Tue Dec  7 00:27:14 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* win32/win32.c (rb_w32_read): fixed more for readline,
-	  and so on. [ruby-core:33511]
-
-Mon Dec  6 23:18:22 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/mkmf/base.rb (TestMkmf#setup): run quietly.
-
-	* test/mkmf/test_find_executable.rb (test_find_executable): use
-	  configured results.
-
-	* common.mk (test-build): test for build process.
-
-Mon Dec  6 22:47:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#candidate): skip separators.
-
-	* sample/optparse/opttest.rb: should not override --help.
-	  [ruby-dev:42690]
-
-Mon Dec  6 19:00:48 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* misc/rb_optparse.zsh: fix typos.
-
-Mon Dec  6 18:59:04 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add new encodings.
-
-Mon Dec  6 18:56:42 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_string.rb (TestString#test_scan): add a test for
-	  [ruby-core:33338] #4087.
-
-Mon Dec  6 18:55:36 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/uri/test_common.rb (TestCommon#test_encode_www_form): add
-	  tests for r30015.
-
-Mon Dec  6 10:39:54 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (URI::Parser#initialize_pattern):
-	  refix for restrict the pattern.
-
-Mon Dec  6 09:45:11 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/openssl (OpenSSL): add toplevel documentation
-	* ext/openssl/ossl_ssl.c (SSLContext, SSLSocket: add additional
-	  documentation
-	* ext/openssl: move "let rdoc know about mOSSL" comments so they don't
-	  show up in output
-
-Mon Dec  6 09:16:46 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (URI::Parser#initialize_pattern):
-	  workaround fix pattern of hostname for RFC 3986. [ruby-dev:42672]
-
-Mon Dec  6 09:14:38 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/mkmf.rb (check_signedness): rename unused variable prelude.
-
-Sun Dec  5 17:56:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (make_metaclass): fix probable typo.  builtin type flag
-	  cannot be used with FL_TEST.
-
-Sun Dec  5 12:09:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb/init.rb (IRB.parse_opts): fix typo. [ruby-core:33574]
-
-Sun Dec  5 11:27:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file_internal): decrement for ungotten line.
-	  [ruby-dev:42680]
-
-Sun Dec  5 10:32:11 2010  Tanaka Akira  <akr@fsij.org>
-
-	* complex.c: parenthesize macro arguments.
-
-Sat Dec  4 11:39:17 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/openssl/ossl_x509ext.c (initialize): add documentation.
-
-Sat Dec  4 11:21:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_update_by): new API for Hash#update.
-
-Sat Dec  4 11:18:10 2010  Tanaka Akira  <akr@fsij.org>
-
-	* class.c: parenthesize macro arguments.
-
-Sat Dec  4 11:07:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_vm_inc_const_missing_count): missing prototype.
-
-Sat Dec  4 08:50:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (Init_iconv): no warnings if $VERBOSE is nil.
-
-Sat Dec  4 08:25:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): revert r30064 and r30071,
-	  because of [ruby-core:26761]. Bug#4106 rejected.
-
-Sat Dec  4 07:46:48 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (String#tr_cpp): substitute * with P like as
-	  autoconf.
-
-Fri Dec  3 22:36:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): protected methods should be
-	  checked against the real class.
-
-Fri Dec  3 20:23:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (convertible_int): define printf format prefix too.
-
-	* lib/mkmf.rb (convertible_int): detect convertible integer type.
-	  port RUBY_REPLACE_INT from configure.in.
-
-	* lib/mkmf.rb (check_sizeof): should return integer always.
-
-Fri Dec  3 12:54:48 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (RCFLAGS): VC10 and after only. fixed the problem
-	  of r30015. [ruby-core:33530]
-
-Fri Dec  3 12:41:52 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* gc.c (rb_objspace_free): With our "lazy-sweep" GC engine, it is
-	  possible for an object to survive until its surrounding object
-	  space is about to be freed.  Those objects, if any, remains
-	  leaked for the rest of a process life.  This is problematic
-	  because for instance a T_DATA object may have its own destructor
-	  to terminate something.
-
-	* vm.c (ruby_vm_destruct): ruby_current_vm termination should be
-	  somewhere after rb_objspace_free for above reason.
-
-Fri Dec  3 12:17:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): protected singleton methods should
-	  be visible from same real class methods.  [ruby-core:33506]
-
-Fri Dec  3 07:08:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_getline): round upto next char
-	  boundary.  [ruby-dev:42674]
-
-Fri Dec  3 06:52:46 2010  Tanaka Akira  <akr@fsij.org>
-
-	* compile.c: parenthesize macro arguments.
-
-Fri Dec  3 04:08:59 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_alias_internal): use st_insert2 and change return
-	  value to int.
-
-	* encoding.c (enc_alias): follow enc_alias_internal.
-
-Fri Dec  3 01:52:43 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_alias_internal): use xfree instead of free.
-
-Thu Dec  2 23:52:26 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* NEWS: entry for ruby_vm_at_exit().
-
-	* eval.c (ruby_cleanup): bug fix around at_exit (1) timing was
-	  wrong. (2) execution order was opposite.
-
-Thu Dec  2 23:05:14 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (RCFLAGS): -nologo switch is only available in
-	  newer versions of rc.exe. fixed the problem of r30012.
-
-Thu Dec  2 21:28:07 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/add/rails.rb: removed.
-
-Thu Dec  2 21:22:05 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_alias_internal): free the copied key and
-	  return NULL when given key is already registered.
-
-	* encoding.c (enc_alias): call set_encoding_const only when the
-	  alias is not registered yet.
-
-Thu Dec  2 19:58:24 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* vm.c (ruby_vm_at_exit): new API.  This enables extension libs to
-	  hook a VM termination.  Right now, because the VM we have is
-	  process global, most extensions do not deallocate resources and
-	  leave them to Operating System's reaping userland processes.  But
-	  in a future we plan to have multiple VMs to run simultaneously in
-	  a single process (MVM project).  At that stage we can no longer
-	  rely on OSes and have to manage every resources to be reclaimed
-	  properly.  So it is.  For a forward-compatibility reason this API
-	  is introduced now, encouraging you to be as gentle as you can for
-	  your resources; that is, tidy up your room.
-
-	* include/ruby/vm.h: ditto.
-
-	* vm_core.h (rb_vm_struct): new field.
-
-	* vm.c (vm_init2): initialize above new field.
-
-	* eval.c (ruby_cleanup): trigger those hooks.
-
-Thu Dec  2 17:00:44 2010  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c: parenthesize macro arguments.
-
-Thu Dec  2 15:31:14 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read): more fix. [ruby-core:33513]
-
-Thu Dec  2 13:41:43 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read): workaround for console reading troubles.
-	  fixed [ruby-core:33511]
-
-Thu Dec  2 13:10:42 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (URI.encode_www_form):
-	  split key-value when the value is Array like object.
-
-Thu Dec  2 10:39:39 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP#set_form_data):
-	  use URI.encode_www_form for application/x-www-form-urlencoded.
-
-Thu Dec  2 10:38:40 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/extmk.rb: remove $makeflags.defined?, it should be $mflags.
-
-Thu Dec  2 10:19:47 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (rc): suppress meaningless message.
-
-Thu Dec  2 10:09:40 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/generator/extconf.rb: remove the lines which set -O3
-	  when -O option is not set.
-	  Note that -O3 doesn't always exist.
-
-	* ext/json/parser/extconf.rb: ditto.
-
-Thu Dec  2 10:01:59 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/extmk.rb: define $makeflags.defined? like $mflags.
-
-Thu Dec  2 07:20:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit::GCStressOption): --gc-stress
-	  option.
-
-	* lib/test/unit.rb (Test::Unit::Mini#_run_suites): show the result
-	  even when interrupted on the way.
-
-Thu Dec  2 07:08:38 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/console/console.c (setattr): should retry on EINTR.
-	  [ruby-dev:42666]
-
-Thu Dec  2 02:30:50 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/http.rb: fixed positional wording to match revised order.
-
-Thu Dec  2 01:24:39 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/common.rb: don't use iconv on 1.9.
-	  patched by Shota Fukumori [ruby-core:33164]
-
-Thu Dec  2 01:02:03 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json: Update github/flori/json from 1.4.2+ to
-	  e22b2f2bdfe6a9b0. this fixes some bugs.
-
-Thu Dec  2 00:05:44 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb: improve rdoc.
-	  This change the order of chapter because such overview should
-	  begin with simple examples.
-	  patched by Eric Hodel [ruby-core:33469]
-
-Wed Dec  1 22:01:49 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (Init_Numeric): fixed a potential bug when using bccwin32
-	  ruby with Microsoft's dll, though we already gave up of supporting
-	  bccwin32. [ruby-core:33503]
-
-Wed Dec  1 21:43:21 2010  Tanaka Akira  <akr@fsij.org>
-
-	* array.c: parenthesize macro arguments.
-
-Wed Dec  1 21:41:57 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/socket/test_addrinfo.rb: extract Errno::EADDRINUSE as a method.
-
-	* test/socket/test_socket.rb: ditto.
-
-Wed Dec  1 15:08:32 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/openssl/test_ssl.rb (test_not_started_session): non socket
-	  argument of SSLSocket.new is not supported on Windows.
-
-Wed Dec  1 14:36:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_memhash): zero-filled strings should return
-	  different values.  [ruby-core:33500]
-
-Wed Dec  1 14:27:49 2010  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 2.0.0 r5952.
-	* test/minitest/*.rb: ditto.
-	* lib/test/unit.rb: Compatibility fix for minitest changes.
-
-Wed Dec  1 10:16:41 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): fix typo (not 0xFD but 0xFE).
-
-Wed Dec  1 09:28:27 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* addr2line.c: Follow .gnu_debuglink section.
-	  A user of distribution provided ruby will see line
-	  info if s/he has a debug package for ruby.
-	  patched by Shinichiro Hamaji [ruby-dev:42655]
-
-Wed Dec  1 01:29:15 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): inspect as a dummy encoding string
-	  when a UTF-16/32 (not BE/LE) string does not have a BOM.
-	  Unicode and some RFCs say that a string labeled as UTF-16/32
-	  doesn't have a BOM, it should be considered big endian.
-	  But many Windows programs generates little endian UTF-16
-	  strings without a BOM. So String#inspect treats a string
-	  labeled UTF-16/32 without a BOM as a dummy encoding string.
-	  patched by Martin Duerst. [ruby-core:33461]
-
-Tue Nov 30 17:04:10 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* addr2line.c (parse_debug_line_cu): ignore DW_LNE_set_discriminator.
-	  To ignore, it needs to read a single unsigned LEB128 integer.
-
-Tue Nov 30 16:29:19 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm_dump.c: undef HAVE_BACKTRACE when the OS is FreeBSD (in other
-	  words backtrace() is libexecinfo) and it is optimized.
-	  This temporary hack may be also applied to other libexecinfo
-	  environments.
-
-Tue Nov 30 16:23:23 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb: improve rdoc.
-	  patched by Eric Hodel ref #4100
-
-Tue Nov 30 12:23:52 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read): read only 1 byte at once on console.
-	  workaround of Windows bug. see [ruby-core:33460].
-	  this is not the final solution.
-
-Tue Nov 30 11:39:13 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb: improve rdoc.
-	  patched by mathew murphy [ruby-core:33472] ref #4100
-
-Tue Nov 30 05:03:44 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/uri/common.rb (encode_www_form, encode_www_form_component):
-	  Improve English in documentation.
-
-	* ext/openssl/ossl_ssl.c (ssl_version=, ciphers=): Document
-	  #ssl_version=, add documentation for #ciphers=.
-
-Mon Nov 29 22:55:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/uri/common.rb (URI::WFKV_): get rid of backtrack explosion
-	  by nested repeat operators.  [ruby-core:33464]
-
-Mon Nov 29 22:53:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (scriptbin.mk): fix generated rules.
-
-	* win32/win32.c (rb_w32_write_console): fix argument type.
-
-Mon Nov 29 21:12:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-forward-sexp): stop after literal hash
-	  key labels.
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords): highlight literal
-	  hash key labels as symbols.
-
-Mon Nov 29 18:31:31 2010  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb (test_unicode_public_review_issue_121):
-	  - Removed commented-out options that are no longer under discussion.
-	  - Added two more tests for forthcomming clarifications.
-
-Mon Nov 29 14:31:17 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_isatty): use GetConsoleMode() to determine the
-	  fd is console or not, just like rb_w32_write_console(). [experimental]
-
-Mon Nov 29 14:19:40 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h (rb_w32_write_console): wrong prototype.
-
-Mon Nov 29 14:10:55 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_write_console): fixed indentation.
-
-Sun Nov 28 22:13:39 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (NATIVE_MUTEX_LOCK_DEBUG): move and use it.
-
-	* ChangeLog: fix my timezone.
-
-Mon Nov 28 21:58:58 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c: remove pthread_atfork().
-
-Mon Nov 28 21:54:22 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (native_cond_*): Check return code.
-	  (Some OSes except Linux return error code).
-
-Sun Nov 28 21:46:21 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (thread_start_func_1): initialize native thread
-	  data immediately before starting.
-
-Sun Nov 28 14:56:32 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (struct argf): make lineno long, and reorder members.
-
-Sun Nov 28 14:55:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_win32.c (gvl_release, gvl_init): suppress warnings.
-
-Sun Nov 28 14:48:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (gvl_release, gvl_init): suppress warnings.
-
-	* vm_core.h (rb_vm_gvl_destroy): add prototype.
-
-Sun Nov 28 14:46:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (gvl_reinit): register atfork handler only in
-	  the parent process, to get rid of dead lock.
-
-Sun Nov 28 12:23:57 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c, vm_core.h: make gvl_acquire/release/init/destruct
-	  APIs to modularize GVL implementation.
-
-	* thread_pthread.c, thread_pthread.h: Two GVL implementations.
-	  (1) Simple locking GVL which is same as existing GVL.
-	  (2) Wake-up queued threads.  The wake-up order is simple FIFO.
-	     (We can make several queues to support exact priorities, however
-	      this causes some issues such as priority inversion and so on.)
-	      This impl. prevents spin-loop (*1) caused on SMP environments.
-	  *1: Only one Ruby thread acquires GVL again and again.
-	      Bug #2359 [ruby-core:26694]
-
-	* thread_win32.c, thread_win32.h: Using simple lock
-	  not by CRITICAL_SECTION but by Mutex.
-	  Bug #3890 [ruby-dev:42315]
-
-	* vm.c (ruby_vm_destruct): ditto.
-
-Sun Nov 28 04:40:00 2010  Luis Lavena  <luislavena@gmail.com>
-
-	* io.c (io_fwrite): use rb_w32_write_console under Windows.
-
-	* win32/win32.c (rb_w32_write_console): added to write to write
-	  Unicode using WriteConsoleW for stdout/stderr. [ruby-core:33166]
-
-Sun Nov 28 03:58:47 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb: improve rdoc.
-	  patched by Mike Perham [ruby-core:33433]
-
-Sat Nov 27 19:12:10 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: parenthesize macro arguments.
-
-Sat Nov 27 18:08:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (leap_year_v_p): fixed typo.  [ruby-dev:42631]
-
-Sat Nov 27 17:57:08 2010  Tanaka Akira  <akr@fsij.org>
-
-	* resolv.rb (Resolv::DNS): use the same DNS server when retry using
-	  TCP.  reported by Julian Mehnle.  [ruby-core:32970]
-
-Sat Nov 27 15:45:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_dump.c (rb_vm_bugreport): see CrashReport log on Mac OS X.
-
-	* configure.in: link addr2line only for ELF.
-
-Sat Nov 27 13:58:55 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#candidate): : was missing.  Thanks,
-	  Shota Fukumori.  [ruby-dev:42634]
-
-Sat Nov 27 12:07:05 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* man/ruby.1: Ruby man page from Arthur Gunn in [ruby-core:33412]
-
-Sat Nov 27 11:29:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#candidate): get rid of 1.9 syntax
-	  so that BASERUBY can be 1.8.
-
-Sat Nov 27 08:16:21 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* addr2line.c (rb_dump_backtrace_with_lines): should close fd on
-	  edge case.
-
-Fri Nov 26 13:33:24 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* addr2line.c: apply a patch from shinichiro.h.
-
-Fri Nov 26 12:21:20 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* addr2line.c: added to show source filename and line number of
-	  functions in backtrace. [ruby-dev:42625]
-	  a patch from shinichiro.h <shinichiro.hamaji AT gmail.com>
-
-	* addr2line.h: ditto.
-
-	* common.mk: add addr2line.$(OBJEXT).
-
-	* configure.in: check dl_iterate_phdr.
-
-	* vm_dump.c (rb_vm_bugreport): use rb_dump_backtrace_with_lines in
-	  addr2line.c when the binary is ELF.
-
-Fri Nov 26 12:12:50 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regcomp.c (setup_tree): restart setup_tree() for a node whose
-	  AnchorNode's type is ANCHOR_PREC_BEHIND or ANCHOR_PREC_BEHIND_NOT
-	  and divide_look_behind_alternatives() divided it to NT_ALT or
-	  NT_LIST. [ruby-core:33370]
-
-Fri Nov 26 11:40:11 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_dump.c (dump_thread): get only required rights of the target
-	  thread because THREAD_ALL_ACCESS causes an access error on XP.
-	  reported by Masaya TARUI via IRC.
-
-Fri Nov 26 11:09:07 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_dump.c (dump_thread): show the displacement from the beginning
-	  of the symbol.
-
-Fri Nov 26 10:48:23 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_dump.c (dump_thread): follow the output of glibc.
-	  see [ruby-dev:42627]
-
-Fri Nov 26 09:48:45 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_str): should succeed the taint status from
-	  the origin. [ruby-core:33338]
-
-Fri Nov 26 09:32:37 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_dump.c (dump_thread): seems to be necessary the 3rd argument of
-	  SymGetLineFromAddr64(), even though MSDN says it can be zero.
-
-Fri Nov 26 09:03:38 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regcomp.c (onig_is_prelude): added to check whether ruby is still
-	  in prelude (or other boot processes) or not.
-
-	* regcomp.c (optimize_node_left): use onig_is_prelude for printing.
-
-	* regcomp.c (set_optimize_info_from_tree): ditto.
-
-	* regcomp.c (onig_compile): ditto.
-
-	* regcomp.c (print_compiled_byte_code_list): print its address.
-
-	* regcomp.c (print_indent_tree): print its contents tree of
-	    ANCHOR_PREC_READ(_NOT) and ANCHOR_PREC_BEHIND(_NOT).
-
-Thu Nov 25 23:10:49 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regcomp.c (print_distance_range): use PRIuSIZE.
-
-	* regcomp.c (print_optimize_info): use %ld because the type of
-	  calculated value of integers is long.
-
-	* regexec.c (onig_print_compiled_byte_code): add prototype.
-
-	* regexec.c (match_at): add 2nd argument.
-
-Thu Nov 25 10:29:55 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/callback/mkcallback.rb (gencallback): shouldn't assume that
-	  VALUE is the same size with long.
-
-Thu Nov 25 10:03:14 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/win32ole/test_err_in_callback.rb (teardown): remove tmp file
-	  only when it exists.
-
-Thu Nov 25 01:38:25 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/big5-hkscs-tbl.rb: Update table as HKSCS-2008.
-	  patched by oCameLo oTnTh [ruby-core:33256]
-
-	* enc/big5.c: add alias Big5-HKSCS:2008 to Big5-HKSCS.
-
-Wed Nov 24 15:18:07 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vsnprintf (BSD_vfprintf): use QUADINT macro only when _HAVE_SANE_QUAD_
-	  macro is defined.
-
-Wed Nov 24 12:47:16 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vsnprintf (BSD_vfprintf): added VC++ compatible size specifications
-	  (I, I32, I64).
-
-Wed Nov 24 11:19:13 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): treat UTF-16 and UTF-32 as BE or LE.
-
-Wed Nov 24 06:35:32 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/utf_16_32.trans: add the UTF-32 converter.
-
-Wed Nov 24 05:40:33 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-Wed Nov 24 06:13:32 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (filecp, wstr_to_mbstr, mbstr_to_wstr):
-	  refactored.
-
-Wed Nov 24 05:40:33 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/utf_16_32.trans: add a converter from UTF-8 to UTF-16.
-
-Wed Nov 24 03:21:35 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/utf_16_32.trans: raise error on unpaired upper
-	  surrogates.
-
-Wed Nov 24 01:40:23 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_16_32.h: add UTF-16 and UTF-32 as a dummy encoding.
-
-	* enc/trans/utf_16_32.trans: add a converter from UTF-16 to UTF-8.
-
-Tue Nov 23 21:59:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (wlink, rb_w32_getppid): use typedef instead of
-	  repeating complicated function prototypes.
-
-Tue Nov 23 18:54:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (rb_thread_mark): should mark self in control
-	  frames.  [ruby-core:33289]
-
-Tue Nov 23 07:57:31 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/delta/parser.{ry,rb}: fixed a bug of token scanner.
-
-Tue Nov 23 07:29:24 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c, rational.c ({nucomp,nurat}_expt): added a check.
-
-Tue Nov 23 07:27:27 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (daynum): should be private.
-
-Tue Nov 23 07:22:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ChangeLog (change-log-indent-text): hanging indent.
-
-Tue Nov 23 06:30:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (SITE_DIR, VENDOR_DIR),
-	  version.c (ruby_initial_load_paths): exclude directories that
-	  are configured without them from $LOAD_PATH. [ruby-core:33267]
-
-	* configure.in (rubylibprefix): No ruby, No libprefix.
-
-Tue Nov 23 01:05:27 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vsnprintf.c (BSD_vfprintf): don't output floating point
-	  when the precision is 0. [ruby-dev:42615]
-
-Mon Nov 22 21:30:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_inspect): fix for ascii-compatible external
-	  encoding and different encoding string.  [ruby-core:33283]
-
-Mon Nov 22 18:45:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): should not duplicate rules.
-	  bug fix of r29842.
-
-Mon Nov 22 18:04:40 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/big5.c: split CP950 from Big5.
-
-	* enc/big5.c: split CP951 from Big5-HKSCS.
-
-	* enc/trans/big5.trans: import conversion table of Big5, Big5-HKSCS,
-	  CP950, and CP951 from ICU. they need fallback conversions.
-	  ref [ruby-core:33256]
-	  http://source.icu-project.org/repos/icu/data/trunk/charset/data/ucm/
-
-	* tool/transcode-tblgen.rb (import_ucm): add to import ucm files.
-
-Mon Nov 22 18:33:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_inspect): append for each chars instead of bulk
-	  copy if encoding conversion is needed.  [ruby-core:33283]
-
-Mon Nov 22 14:22:45 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* time.c (time_zone): use rb_locale_str_new_cstr to set encoding
-	  as locale and convert its content to internal encoding.
-	  [ruby-core:33278]
-
-Mon Nov 22 11:58:11 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_concat): set ENC_CODERANGE_VALID when the
-	  receiver is 7BIT and the argument is non ASCII.
-
-Mon Nov 22 01:48:58 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: some improvements for performance.
-
-Sat Nov 20 07:45:50 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/mkmf.rb: adding compilation support for ObjC/ObjC++ extensions.
-	  Thanks Scott Gonyea! [ruby-core:33260]
-
-Sat Nov 20 01:57:55 2010  Akio Tajima  <artonx@yahoo.co.jp>
-
-	* common.mk: add dependency(insns.inc) to compile.obj
-
-Fri Nov 19 23:05:48 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (insns_rules.mk): remove extra backslash.
-
-	* cygwin/GNUmakefile.in, win32/Makefile.sub (clean): rc files are
-	  made at compile time, so should be removed by clean.
-
-Fri Nov 19 22:09:46 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_core.rb
-	  (Tester#test_pretty_format_long_text_finite): skip a test that
-	  uses long string on small memory system. [ruby-dev:42599]
-
-Fri Nov 19 21:07:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb: shell completion support for zsh.  based on
-	  <http://d.hatena.ne.jp/rubikitch/20071002/zshcomplete>
-
-	* lib/optparse.rb: shell completion support for bash.
-
-Fri Nov 19 00:00:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (SCRIPTPROGRAMS): no needs on cygwin.
-
-	* win32/Makefile.sub (scriptbin): create script binaries.
-
-Thu Nov 18 23:21:23 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rexml/formatters/pretty.rb (REXML::Formatters::Pretty#wrap):
-	  REXML::Formatters::Pretty#wrap used a recursive method call to
-	  format text.  This switches it to use an iterative approach.
-	  [ruby-core:33245]
-	  Patch by Jeremy Evans. Thanks!!!
-
-	* test/rexml/test_core.rb: add a test for it.
-
-Thu Nov 18 22:58:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/io.h (rb_io_buffer_t): extract from rb_io_t.
-
-Thu Nov 18 07:37:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (reconfig): force reconfigure with previous options.
-
-	* common.mk (showconfig): show configure flags, like as
-	  `config.status --config' generated by recent autoconf.
-
-Thu Nov 18 07:16:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/langinfo.c (strncasecmp): get rid of redefinition.
-
-Thu Nov 18 00:02:17 2010  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: Upgrading output encoding with ASCII content
-	  as needed.  [ruby-core:33229]
-
-Wed Nov 17 23:19:21 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/configure.bat: remove quotes from arguments to be quoted.
-
-	* lib/mkmf.rb (create_makefile): use forward slashes in messages.
-
-	* lib/mkmf.rb (create_makefile): make extension libraries messages
-	  brief.
-
-	* win32/Makefile.sub (MAKEDIRS): should not include silent flag.
-
-	* common.mk (ext/ripper/ripper.c, ext/json/parser/parser.c): pass
-	  Q and ECHO.  [ruby-core:33226]
-
-Wed Nov 17 16:09:52 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/test_tracer.rb: new test case.
-	  minimal regression test for r29280.
-
-Wed Nov 17 16:04:23 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/envutil.rb (Test::Unit::Assertions#assert_warn):
-	  new assertion to assert that a particular warning message is
-	  displayed.
-	  forward port from branches/ruby_1_9_2@29795.
-
-Wed Nov 17 15:16:48 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regint.h (OnigOpInfoType): constify name.
-
-	* regcomp.c (op2name): constify return value.
-
-	* regcomp.c (onig_print_compiled_byte_code): use PRIuPTR and
-	  uintptr_t to clean warnings.
-
-	* regcomp.c (print_indent_tree): use PRIxPTR and intptr_t.
-
-	* regexec.c (match_at): use PRIdPTR and intptr_t.
-
-Wed Nov 17 09:49:10 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/shift_jis.c (property_name_to_ctype): fix memory leak.
-
-	* enc/euc_jp.c (property_name_to_ctype): ditto.
-
-Wed Nov 17 08:54:04 2010  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: Upgrading output encoding as needed.  [ruby-core:33135]
-
-Tue Nov 16 22:30:39 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_insnhelper.c (vm_throw): remove fear of undefined behavior :-)
-	  Coverity Scan found this bug.
-
-Tue Nov 16 09:33:00 2010  Kenta Murata <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/lib/bigdecimal/util.rb (to_digits): avoid unused
-	  variables warning, reported by Aaron Patterson.
-
-Tue Nov 16 06:39:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (PACK_ITEM_ADJUST): return nil not result array and yield
-	  values if block is given.  [ruby-core:33193]
-
-Tue Nov 16 00:21:20 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regparse.c (and_cclass, or_cclass): fix memory leak.  Coverity Scan
-	  found this bug.  [ruby-dev:42579]
-
-Tue Nov 16 00:07:32 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gc.c (assign_heap_slot): fix fear of memory leak and memory
-	  violation.  Coverity Scan found this bug.
-
-Mon Nov 15 23:54:45 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval_intern.h (CHECK_STACK_OVERFLOW): it was not intended to add
-	  size_t to a pointer typed VALUE*.  Coverity Scan found this defect.
-
-Mon Nov 15 23:41:21 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_set_exception_local_table, iseq_set_local_table,
-	  rb_iseq_build_from_ary): fix type inconsistency (which is benign
-	  because sizeof(ID) == sizeof(ID*), though).  Coverity Scan found
-	  these bugs.
-
-Mon Nov 15 22:47:27 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (rb_funcall): ensure va_end after va_init_list.  Coverity
-	  Scan found this bug.
-
-Mon Nov 15 08:36:12 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/racc/parser.rb (do_parse, yyparse): using class eval to define
-	  method and avoid __send__.
-
-Mon Nov 15 06:43:48 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* etc/openssl/ossl_ssl.c (ossl_ssl_get_cert): raise exception if
-	  pointer is invalid.  Thanks Ippei Obayashi! [ruby-dev:42573]
-
-Sun Nov 14 17:57:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/Makefile.in (distclean): should not remove sources which are
-	  distributed in tarball.
-
-Sun Nov 14 16:48:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_set_token_info): turn on/off with directives.
-	  [ruby-core:25442]
-
-Sun Nov 14 12:05:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_readlines): forward to current_file for arguments
-	  check.  http://twitter.com/nagachika/status/3634254856589312
-
-Sun Nov 14 08:48:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/setup.mak (-basic-vars-, -runtime-): suppress trailing
-	  space and compiler command line.
-
-Sun Nov 14 04:22:32 2010  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/setup (config.h): Added HAVE_LABS and HAVE_LLABS to config.h.
-
-	* symbian/configure.bat: Changed packaging version in line with API
-	  style 3 versioning.
-
-Sat Nov 13 16:37:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (showflags, help): emit messages at once.
-
-	* win32/Makefile.sub (MSG, EOM): remove surrounding quotes by %~I.
-
-Sat Nov 13 01:31:30 2010  Akio Tajima <artonx@yahoo.co.jp>
-
-	* win32/Makefile.sub: reorder variable End Of Message (don't display it)
-
-Fri Nov 12 20:52:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (showflags, help): use caret to quote leading spaces on
-	  Windows.
-
-	* Makefile.in, common.mk, cygwin/GNUmakefile.in, enc/depend,
-	  ext/ripper/depend, lib/mkmf.rb, win32/Makefile.sub: caddle up.
-
-Fri Nov 12 16:35:31 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: support C level backtrace information on FreeBSD.
-	  When devel/libexecinfo is installed on FreeBSD, now ruby
-	  can show C level backtrace information.
-	  http://www.freebsd.org/cgi/cvsweb.cgi/ports/devel/libexecinfo/
-
-Fri Nov 12 09:58:30 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/setup.mak: use findstr.exe instead of find.exe, because all
-	  target build platforms should have findstr.exe, and, find.exe often
-	  means another command such as cygwin's.
-
-Fri Nov 12 00:30:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): need PRI_LL_PREFIX.
-
-Thu Nov 11 23:38:32 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: ANSI C-conforming const and volatile are mandatory
-
-	* configure.in (AC_C_CONST, AC_C_INLINE, AC_C_VOLATILE): check
-	  before used in other checks.
-
-	* configure.in (RUBY_CHECK_PRINTF_PREFIX): should not break from
-	  RUBY_WERROR_FLAG, so that ac_c_werror_flag gets restored.
-
-Thu Nov 11 23:04:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (warn_deprecated): show caller position.
-
-Thu Nov 11 23:03:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_close): untie tied io before closing.
-
-	* io.c (argf_write): add ARGF.write and so on.
-
-	* io.c (argf_read_nonblock): add ARGF.read_nonblock.
-
-Thu Nov 11 21:49:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/stats.rb (RDoc#print): get rid of NaN.
-
-Thu Nov 11 21:47:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (SHOWFLAGS): show compile flags.
-
-	* common.mk: hide long command lines by default.  verbose-mode is
-	  turned on by V=1 as before.
-	  http://jarp.does.notwork.org/diary/200605b.html#200605121
-
-Thu Nov 11 21:32:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (try_func): accept variable address.
-
-	* ext/win32ole/extconf.rb: libuuid is needed on cygwin.
-
-Thu Nov 11 21:24:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): use cygwin_conv_path on cygwin 1.7 or
-	  later.
-
-	* ruby.c (push_include_cygwin): ditto.
-
-Thu Nov 11 20:49:48 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (PRI_LL_PREFIX): format type specifier for
-	  LONG_LONG may vary on platforms.
-
-Thu Nov 11 20:45:23 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (SYMBOL_PREFIX): separate from EXPORT_PREFIX.
-
-	* win32/mkexports.rb (Exports#each_export): use SYMBOL_PREFIX.
-
-Wed Nov 10 07:20:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (scriptbin): make executable file from
-	  scripts with stub.
-
-	* ruby.c (load_file_internal): assume xflag for exe file as well
-	  as no-shebang file.
-
-	* tool/rbinstall.rb: install script programs.
-
-	* win32/mkexports.rb (Exports#initialize): alias ruby_sysinit for
-	  stub.
-
-	* win32/stub.c: stub for scripts.  [EXPERIMENTAL]
-
-Tue Nov  9 21:57:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (init_funcname): allocate and build initialization
-	  function name at once.
-
-Tue Nov  9 21:14:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (AC_FUNC_GETPGRP, AC_FUNC_SETPGRP): no need when
-	  not used.
-
-	* configure.in (EXPORT_PREFIX): check generic prefix.
-
-Tue Nov  9 13:24:33 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regenc.c (onigenc_minimum_property_name_to_ctype):
-	  \p{...} should be case insensitive. [ruby-core:33000]
-
-	* regenc.c (onigenc_property_list_add_property):
-	  ditto.
-
-	* enc/euc_jp.c (init_property_list, property_name_to_ctype):
-	  to lowercase property names.
-
-	* enc/shift_jis.c (init_property_list, property_name_to_ctype):
-	  ditto.
-
-Tue Nov  9 13:29:36 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (overlapped_socket_io): get rid of a warning of 64bit
-	  mingw.
-
-Tue Nov  9 10:44:19 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* util.c (ruby_strtod): this code uses FPU's rounding system.
-	  But x86's FPU calculates double precision floating-point
-	  numbers in 80bit precision, so it fails to round the value.
-	  So ensure the value is assigned a variable. [ruby-dev:42551]
-	  see also [ruby-math:00802]
-	  http://www.shudo.net/java-grandprix99/strictfp/
-
-Tue Nov  9 07:30:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_syserr_new): new function to make SystemCallError
-	  instance without errno.  [EXPERIMENTAL]
-
-	* error.c (rb_syserr_fail, rb_mod_syserr_fail): ditto.
-
-Tue Nov  9 05:54:57 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/*.rb: Remove unused variable warnings.
-	  Patch by Run Paint [ruby-core:30991]
-
-	* lib/rubygems/*, lib/rdoc/*.rb, lib/rake/*.rb: ditto
-
-Mon Nov  8 18:26:03 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* util.c (ruby_hdtoa): fix type cast and bufsize.
-
-Mon Nov  8 15:40:56 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vsnprintf.c (BSD_vfprintf): fix precision specifier doesn't
-	  work well on %f. [ruby-dev:42552]
-
-Mon Nov  8 14:41:40 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (get_wsa_extension_function): typos.
-
-Mon Nov  8 13:41:33 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/enc-unicode.rb,
-	  enc/unicode/name2ctype.h, enc/unicode/name2ctype.h.blt,
-	  enc/unicode/name2ctype.kwd, enc/unicode/name2ctype.src:
-	  Add Age property to regexp. [ruby-core:33019]
-	  patched by Ammar Ali, tested by Run Paint Run Run
-
-Mon Nov  8 12:16:39 2010  Ben Walton  <bwalton@artsci.utoronto.ca>
-
-	* configure.in: support -h for solaris linker when gcc not used
-
-Mon Nov  8 11:47:39 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (finish_overlapped_socket): refactoring.
-
-Mon Nov  8 11:02:21 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (get_proc_address): refactoring.
-
-	* win32/win32.c (get_wsa_exetinsion_function): refactoring.
-
-Mon Nov  8 09:45:35 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/gbk-tbl.rb: Add euro sign. [ruby-core:33094]
-	  CP936, which is de facto definition of GBK, has it.
-	  http://msdn.microsoft.com/en-us/goglobal/cc305153.aspx
-
-Mon Nov  8 07:26:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check only the first symbol to get rid of
-	  duplication.  [ruby-core:33084] #4031
-
-Sun Nov  7 10:13:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (NM): check on all platforms.  #4031
-
-Sun Nov  7 06:16:33 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* test/openssl/test_ocsp.rb: adding test for r29699.  Thanks Elise
-	  Huard! [ruby-core:32460]
-
-Sat Nov  6 07:33:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_export_prefix): check for prefixed
-	  underscore of exported symbols
-
-	* tool/rbinstall.rb (bin-comm): prepend prolog shell script if
-	  necessary.
-
-	* configure.in (LIBRUBY_RELATIVE): use rpath token expansion.
-
-Sat Nov  6 07:24:01 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/ruby.pc.in (arch, sitearch): reordered.
-
-	* configure.in: keep failed file.
-
-Sat Nov  6 07:03:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_fork_err): save errinfo before fdopen.
-
-Sat Nov  6 00:43:58 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspcid_initialize): an optional
-	  parameter may be used to specify the OpenSSL::OCSP::CertificateId on
-	  initialization.  Thanks Elise Huard! [ruby-core:32460]
-
-Fri Nov  5 12:23:01 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_{process,system}.rb (test_fallback_to_sh):
-	  meaningless and wrong tests where /bin/sh does not exist.
-
-	* process.c (proc_spawn_v): should spawn, not exec.
-
-Fri Nov  5 01:21:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (proc_exec_v, proc_spawn_v): try to execute with sh if
-	  no shebang.  [ruby-core:32745] [EXPERIMENTAL]
-
-Fri Nov  5 00:39:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_readlines, rb_io_each_line): limit must not be zero.
-	  a patch from Tomoyuki Chikanaga at [ruby-dev:42538].  #4024
-
-Fri Nov  5 00:14:15 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/fiddle/extconf.rb: fixing ffi library location on windows.
-	  Thanks Usa! [ruby-core:32930]
-
-Thu Nov  4 20:04:44 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (rb_newobj): force garbage_collect() if GC.stress == true.
-
-Thu Nov  4 19:48:22 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* ChangeLog: missed to write a last ChangeLog.
-
-	* gc.c (gc_finalize_deferred): removed.
-
-	* gc.c (rb_gc_finalize_deferred): Do not invoke a free_unused_heaps().
-
-Thu Nov  4 19:45:27 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (run_final): do not need argument obj.
-
-Thu Nov  4 19:26:10 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (before_gc_sweep): fix commit miss.
-
-Thu Nov  4 19:20:46 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (after_gc_sweep, before_gc_sweep):
-	  invoke rb_sweep_method_entry() as soon as possible.
-
-Thu Nov  4 19:13:58 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (after_gc_sweep, slot_sweep): finalizers should be invoked
-	  as soon as possible.
-
-Thu Nov  4 10:30:40 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* configure.in (--with-valgrind): Now this option is default on.
-	  You can still explicitly disable this feature by specifying
-	  --without-valgrind.
-
-Thu Nov  4 02:06:16 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c (fiber_t_alloc): raise an error when fiber is going to be
-	  initialized twice.  [ruby-dev:42524]
-
-Thu Nov  4 02:04:25 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c (rb_fiber_resume): raise an "double resume" error when root
-	  fiber is going to be resumed.  [ruby-dev:42523]
-
-Wed Nov  3 14:17:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/ostruct.rb (OpenStruct#delete_field): also undefine
-	  accessor methods.  [ruby-core:33010]
-
-Wed Nov  3 14:13:46 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): concatenation of valid
-	  encoding string and invalid encoding string should result
-	  invalid encoding.  [ruby-core:33027]
-
-Wed Nov  3 08:58:59 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c, vm.c, vm_core.h: remove USE_VALUE_CACHE option.
-
-Wed Nov  3 07:47:25 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb (RubyLex#identify_string): parse multiple
-	  regex options.  a patch from Heesob Park in [ruby-core:32988].
-
-Wed Nov  3 07:33:57 2010  Tanaka Akira  <akr@fsij.org>
-
-	* vm_method.c (rb_clear_cache_by_class): just return if the class has
-	  no method.  reported by Eric Wong.  [ruby-core:32689]
-
-Tue Nov  2 22:50:25 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/visitor.rb (initialize): push accessor
-	  methods to subclass that actually uses them.
-
-Tue Nov  2 22:47:08 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/visitor.rb (accept): switch to
-	  a dispatch cache rather than case / when statement.
-
-Tue Nov  2 21:46:52 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* NEWS: fix a typo.
-
-Tue Nov  2 20:10:32 2010  Tajima Akio <artonx@yahoo.co.jp>
-
-	* test/rake/test_tasks.rb: clear env var which is used by the test.
-	  [ruby-dev:42508]
-
-Tue Nov  2 00:25:54 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: win64 is just same with win32 about socket.
-	  notice: but wince is not same.
-
-Mon Nov  1 21:25:57 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* main.c: <stdlib.h> is needed, to introduce the getenv(3)
-	  prototype declaration.  Without it a C compiler shall infer
-	  the getenv type as "int getenv(...);", but this is totally
-	  wrong, especially when your machine's sizeof(int) and
-	  sizeof(char*) differs.  On such environment a return value
-	  of getenv(3), which is in fact a char*, might first casted
-	  into a int (loses data here), and then casted back to char*
-	  by automatic integral promotion to fit to the prototype of
-	  ruby_set_debug_option().
-
-Sun Oct 31 23:27:09 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (finalizer_table, objspace->final.table):
-	  Create finalizer_table at Init_heap().
-	  Remove all null checks of finalizer_table.
-
-	* gc.c (mark_tbl): skip if no table entries.
-
-	* gc.c (slot_swee): remove useless need_call_final check.
-
-Sun Oct 31 22:32:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_objspace_free): finalizers should be called separately
-	  from freeing objspace.  [ruby-dev:42479]
-
-Sun Oct 31 22:24:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): free current VM and its objspace even
-	  when exiting by SystemExit.
-
-Sun Oct 31 22:10:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (new_child_iseq): adjust argument types.
-
-	* iseq.c (prepare_iseq_build, rb_iseq_new),
-	  (rb_iseq_new_with_bopt_and_opt, rb_iseq_new_with_opt),
-	  (rb_iseq_new_with_bopt): ditto.
-
-	* compile.c (iseq_set_exception_table): suppress warnings.
-
-	* insns.def (putspecialobject, defined): ditto.
-
-	* iseq.c (iseq_load): ditto.
-
-Sun Oct 31 09:30:51 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h: some refactoring.
-	  - move decl. of rb_compile_option_struct to iseq.h.
-	  - define enum iseq_type.
-	  - define enum vm_special_object_type.
-
-	* compile.c: some refactoring.
-	  - apply above changes.
-	  - (struct iseq_link_element): change value of type.
-	  - remove unused decl.
-	  - fix comment.
-	  - rename iseq_build_body and iseq_build_exception to
-	    iseq_build_from_ary_body and iseq_build_from_ary_exception.
-
-	* iseq.h: define enum catch_type and enum defined_type.
-
-	* insns.def: apply above changes.
-
-	* iseq.c: define ISEQ_MAJOR_VERSION and ISEQ_MINOR_VERSION.
-
-Sat Oct 30 23:38:59 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rexml/encoding.rb: untabify.
-
-Sat Oct 30 21:06:37 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rexml/encoding.rb: use Ruby native encoding mechanism.
-	  [ruby-dev:42464]
-	* lib/rexml/encodings/: remove.
-
-	* lib/rexml/document.rb, lib/rexml/formatters/default.rb,
-	  lib/rexml/output.rb, lib/rexml/parseexception.rb,
-	  lib/rexml/parsers/baseparser.rb, lib/rexml/source.rb,
-	  lib/rexml/xmldecl.rb: use Ruby's native Encoding object.
-
-	* test/rexml/, test/rss/: follow the above encoding changes.
-
-	* NEWS: add REXML's incompatible change about encoding.
-
-Sat Oct 30 17:23:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_strtod): get rid of overflow/underflow as possible.
-
-Sat Oct 30 14:37:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ruby_pc): erase runtime-defined variables and
-	  check if generated pc file is valid.
-
-	* template/ruby.pc.in (DEFFILE): need for mingw.
-
-	* template/ruby.pc.in (LIBRUBY): fix the order.
-
-Sat Oct 30 11:33:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (ruby_pc): ignore missing variables.
-
-	* template/ruby.pc.in: add missing variables for mswin.
-
-Sat Oct 30 10:24:35 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* object.c: Make BasicObject.new accept no parameter.
-	  Revert of r26135 [ruby-core:27080], as per [ruby-core:32952].
-
-Sat Oct 30 09:40:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c: use constants in id.h.
-
-Sat Oct 30 09:08:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/fiddle/closure.c (fiddle_closure): embed cif not reference
-	  so that the content surely get initialized.  [ruby-dev:42480]
-
-Sat Oct 30 07:01:53 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv-replace.rb: suppress warning.
-
-	* lib/open-uri.rb: ditto.
-
-Sat Oct 30 06:32:52 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/pathname/test_pathname.rb (TestPathname#test_grpowned?): the
-	  group of the created file is inherited from the parent
-	  directory on BSDs and MacOS X.  Linux also inherit the group if
-	  the setgid bit of the directory is set.  It causes the test fail.
-	  fixed by Shota Fukumori.  [ruby-dev:42458]
-
-Sat Oct 30 05:58:54 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb: retry via TCP if UDP reply is truncated.
-	  fixed by Julian Mehnle.  [ruby-core:32407]
-
-Sat Oct 30 00:35:13 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (iseq_s_compile): fix optional argument.
-	  a patch from Yutaka HARA [ruby-core:32953] [Ruby 1.9-Bug#4001]
-
-Sat Oct 30 00:24:42 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/objspace/objspace.c (memsize_of): take care of
-	  T_CLASS/const_tbl.
-	  a patch from nagachika <nagachika00@gmail.com> [ruby-dev:42490]
-
-Fri Oct 29 23:32:36 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* test/profile_test_all.rb: added.
-	  You can use test-all profiler with the following command:
-	    RUBY_TEST_ALL_PROFILE=true make test-all
-	  This command generates ./test_all_profile and you can analyze
-	  which tests consume memories.
-
-	* test/runner.rb: ditto.
-
-Fri Oct 29 10:02:03 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/enc-unicode.rb,
-	  enc/unicode/name2ctype.h, enc/unicode/name2ctype.h.blt,
-	  enc/unicode/name2ctype.kwd, enc/unicode/name2ctype.src:
-	  Add 'Unknown' Script.
-	  patched by Run Paint Run Run. [ruby-core:32937] #3998
-
-Fri Oct 29 05:13:34 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/objspace/objspace.c (ObjectSpace.memsize_of_all): rename
-	  ObjectSpace.total_memsize_of_all_objects() to
-	  ObjectSpace.memsize_of_all([klass]).
-	  Accept Class object to filter the objects.
-
-	* test/objspace/test_objspace.rb: fix test for above change.
-
-Fri Oct 29 03:04:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_dump): fix expected length. [ruby-core:32935]
-
-Thu Oct 28 23:31:39 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (before_gc_sweep, run_final): fix decrement timing of final_num.
-
-Thu Oct 28 20:11:30 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/enc-unicode.rb,
-	  enc/unicode/name2ctype.h, enc/unicode/name2ctype.h.blt,
-	  enc/unicode/name2ctype.kwd, enc/unicode/name2ctype.src:
-	  Update Oniguruma for Unicode 6.
-	  patched by Run Paint Run Run. [ruby-core:32923] #3989
-
-Thu Oct 28 20:06:25 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (ONIGENC_CTYPE_SPECIAL_MASK):
-	  change mask from 128 to 256. [ruby-core:32931]
-
-Thu Oct 28 12:06:54 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/webrick/httprequest.rb (read_request_line): extend max
-	  length to 2083. This is from Internet Explorer's max uri
-	  length. http://support.microsoft.com/kb/208427 [ruby-core:32924]
-
-Thu Oct 28 04:00:08 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (GC.stat): added.  [ruby-dev:38607]
-
-	* test/ruby/test_gc.rb: add a test for above.
-
-Thu Oct 28 03:13:06 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/objspace/objspace.c (memsize_of): fix rdoc.
-
-	* ext/objspace/objspace.c (total_memsize_of_all_objects): added.
-
-	* test/objspace/test_objspace.rb:
-	  - add a test for ObjectSpace.total_memsize_of_all_objects.
-	  - add two tests for ObjectSpace.memsize_of (for nil and Fixnum).
-
-Wed Oct 27 23:55:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (Init_iconv): warn deprecated use.
-
-Wed Oct 27 18:50:17 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bignum.c (rb_big2long, rb_big2ulong): rb2ulong() returns VALUE, but
-	  its real range is ulong. So, if the size of VALUE is bigger than
-	  ulong, upper bits are always zero even if the actual value is
-	  negative.
-	  fixed #3490
-
-Wed Oct 27 18:27:17 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_io.rb (TestIO#pipe): should close write end of pipe
-	  before closing read end, to get rid of timing problem.
-
-	* test/ruby/test_io_m17n.rb (TestIO_M17N#pipe): ditto.
-
-Wed Oct 27 18:14:27 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_getppid): support Win64.
-
-Wed Oct 27 15:07:19 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (w32_error): should get error no only once, because
-	  the result of the second getting will indicate the error of the
-	  first FormatMessage() call.
-
-Wed Oct 27 13:51:25 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_io.rb (TestIO#pipe): need to propagate exceptions
-	  in read/write thread. fix r29541.
-
-	* test/ruby/test_io_m17n.rb (TestIO_M17N#pipe): ditto.
-
-Wed Oct 27 12:05:40 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* class.c (clone_const): need to return value. fix r29602.
-
-Wed Oct 27 11:58:58 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/ruby.h (NUM2LONG_internal): add cast to get rid of a
-	  non GCC compiler warning. this is intentional type conversion.
-
-Wed Oct 27 09:25:46 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* cont.c: apply documentation patch by Run Paint Run Run.
-	  [ruby-core:32915]
-
-Wed Oct 27 02:12:10 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* object.c (Init_Object), constant.h, variable.c
-	  (rb_mod_private_constant, rb_mod_public_constant,
-	  set_const_visibility, rb_const_get_0): add Module#public_constant
-	  and private_constant.  [ruby-dev:39685][ruby-core:32698]
-
-	* test/ruby/test_module.rb: add tests for above.
-
-Wed Oct 27 02:02:54 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* class.c, constant.h, gc.c, method.h, object.c, variable.c,
-	  vm_insnhelper.c: use struct rb_constant_entry_t as entry of
-	  RCLASS_CONST_TBL.  RCLASS_CONST_TBL has contained VALUE of constant
-	  directly.  Now instead rb_const_entry_t is contained in
-	  RCLASS_CONST_TBL,  rb_const_entry_t is managed by malloc, and
-	  have not only the value itself but also visibility flag.
-	  This is another preparation for private constant (see
-	  [ruby-dev:39685][ruby-core:32698]).
-
-Wed Oct 27 01:56:34 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* class.c, gc.c, object.c, variable.c, vm_insnhelper.c,
-	  include/ruby/ruby.h: separate RCLASS_CONST_TBL from RCLASS_IV_TBL.
-	  RCLASS_IV_TBL has contained not only instance variable table but
-	  also constant table.  Now the two table are separated to
-	  RCLASS_CONST_TBL and RCLASS_IV_TBL.  This is a preparation for
-	  private constant (see [ruby-dev:39685][ruby-core:32698]).
-
-Tue Oct 26 18:51:00 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/scanf.rb (extract_float): allow 2.e+2 style.
-	  [ruby-dev:42452] #3978
-
-Tue Oct 26 18:09:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (ASFLAGS): needs INCFLAGS.
-
-	* configure.in (rb_cv_dynamic_alloca): check if extra source for
-	  dynamic size alloca.
-
-	* missing/x86_64-chkstk.s (___chkstk): necessary for alloca of
-	  amd64-mingw32msvc-gcc on Ubuntu.
-
-	* thread_win32.c (ruby_alloca_chkstk): check stack overflow
-
-Tue Oct 26 18:04:53 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/ruby.pc.in (Libs): needs DLDFLAGS.
-
-Tue Oct 26 12:47:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (pkgconfig-data): moved from Makefile.in.
-
-	* tool/rbinstall.rb: install pc file only if non-empty.
-	  [ruby-core:32901] #3983
-
-	* win32/Makefile.sub (ruby_pc): create pc file.
-
-Tue Oct 26 09:13:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_gcc_atomic_builtins): check for atomic
-	  builtins, all are not available in Apple derivative gcc.
-
-Tue Oct 26 00:29:26 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (pkgconfig-data): create pkg-config metadata file.
-
-	* tool/rbinstall.rb: install pkg-config metadata file.
-
-	* template/ruby.pc.in: template of pkg-config metadata file.
-
-Mon Oct 25 16:38:07 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* signal.c  (rb_atomic_t): GCC (of  at least  recent versions)
-	  has  ubiquitous  support  for  atomic operations.   On  that
-	  compiler a C program can  issue a memory barrier using these
-	  dedicated  instructions.  According to  the GCC  manual they
-	  cargo culted  this feature form  the Itanium ABI  so chances
-	  are that  other compilers  could also support  this feature.
-	  But so far GCC is the  only compiler that I know to have it.
-	  Also note that this works on non-Itanium machines.
-
-Mon Oct 25 06:21:35 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vsnprintf.c (BSD_vfprintf): prec digits fractal part should be
-	  appended to 0 if prec is given.  [ruby-dev:42453] #3979
-
-Mon Oct 25 02:57:21 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk (run.gdb): Quit gdb on 'make gdb' when
-	  no signals are received.
-
-Mon Oct 25 00:25:23 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: some corrections of documentation.
-
-Sun Oct 24 17:14:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c, gc.c, hash.c, object.c, string.c, struct.c,
-	  transcode.c, variable.c, vm.c, vm_insnhelper.c, vm_method.c:
-	  replace calls to rb_error_frozen() with rb_check_frozen().  a
-	  patch from Run Paint Run Run at [ruby-core:32014]
-
-	* include/ruby/intern.h (rb_check_frozen): optimize.
-	  [ruby-core:32878]
-
-Sun Oct 24 15:16:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit::Mini#run): abort if interrupted.
-
-	* lib/test/unit.rb (Test::Unit::Mini#run_test_suites): show the
-	  result even when interrupted on the way.
-
-	* lib/test/unit.rb (Test::Unit::Mini#run_test_suites): ensure
-	  output sync mode to be restored.
-
-Sun Oct 24 14:11:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_define_method): defined method is run with the default
-	  public visibility regardless the visibility context of definition.
-	  [ruby-core:30638]
-
-Sun Oct 24 12:08:54 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/test/unit.rb: make test/unit play nicely with the rake test
-	  loader. [ruby-core:32864]
-
-Sun Oct 24 00:25:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_rubyoptions.rb (test_segv_test): follow up the
-	  change at r29556.
-
-Sat Oct 23 14:39:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: $extmk should be true for test/runner.
-
-Sat Oct 23 10:55:37 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_dump.c (rb_vm_bugreport): fix to add bug outputs.
-	  - loaded script ($0)
-	  - loaded features ($")
-	  - process memory map on Linux (/proc/self/maps)
-
-	* vm_dump.c (rb_vmdebug_stack_dump_raw): fix header message.
-
-Fri Oct 22 14:50:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert):
-	  assertion message must not be nil.
-
-Fri Oct 22 13:59:50 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert):
-	  treat nil case. Please run test-all before commit such change.
-
-Thu Oct 21 23:58:14 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (gc_lazy_sweep): Variable declarations should be at
-	  the head of block.
-
-Thu Oct 21 23:56:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (objspace_each_objects, rb_objspace_each_objects): use
-	  struct.
-
-	* gc.c (objspace_each_objects): fix return with no value.
-
-Thu Oct 21 23:47:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_initialize): remove useless intermediate variable.
-
-Thu Oct 21 16:07:20 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_f_select): change rdoc.
-	  patched by Eito Katagiri [ruby-core:31805]
-
-Thu Oct 21 15:55:21 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/webrick/httpauth/digestauth.rb
-	  (WEBrick::HTTPAuth::ProxyDigestAuth#check_uri): privated.
-	  [ruby-dev:42344]
-
-Thu Oct 21 15:50:25 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_f_select): add correct rdoc.
-	  patched by Dave Thomas [ruby-core:32467]
-
-Thu Oct 21 15:42:01 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/telnet.rb (Net::Telnet#close): added.
-	  patched by Erik Hollensbe [ruby-dev:42260] #3830
-
-Thu Oct 21 13:08:00 2010  Narihiro Nakamura  <authornari@gmail.com>
-
-	* gc.c (rb_objspace_each_objects): don't lazy sweep in
-	  rb_objspace_each_objects. [Bug #3940] [ruby-dev:42369]
-
-Thu Oct 21 00:05:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_io.rb (TestIO#pipe): get rid of deadlock on pipe.
-	  a patch from Tomoyuki Chikanaga at [ruby-dev:42435].  #3970
-
-	* test/ruby/test_io_m17n.rb (TestIO_M17N#pipe): ditto.
-
-Wed Oct 20 23:54:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dbm/dbm.c: rdoc based on a patch by mathew meta AT
-	  pobox.com, at [ruby-core:32853].
-
-Wed Oct 20 10:47:21 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* util.c (ruby_strtod): reject 0x1.p+0. [ruby-dev:42432] #3966
-
-Wed Oct 20 10:00:57 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vsnprintf.c (BSD_vfprintf): print floating point on "%#a".
-	  [ruby-dev:42431] Bug#3965
-
-Tue Oct 19 19:30:11 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vsnprintf.c (BSD_vfprintf): clear ALT flag for %a.
-	  [ruby-core:32841] [ruby-core:32848]
-
-Tue Oct 19 12:19:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vsnprintf.c (BSD_vfprintf): fix over-count of field size.
-
-Tue Oct 19 03:08:52 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vsnprintf.c (BSD_vfprintf): use HEXPREFIX flag for prefix of %a.
-	  [ruby-core:32841]
-
-Mon Oct 18 13:18:01 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_class_init): Define
-	  Digest::Class.new(). [Feature #3954]
-
-Mon Oct 18 12:58:40 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (pack_pack): refine the document.  [ruby-dev:42397]
-	  (pack_unpack): ditto.
-
-Mon Oct 18 10:19:00 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (transport_request): @socket may be nil.
-	  patched by Egbert Eich [ruby-core:32829]
-
-Mon Oct 18 09:57:28 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* sprintf.c (BSD_vfprintf): wrong padding around prefix and
-	  floating point with %a. [ruby-dev:42403] Bug #3956
-
-Sun Oct 17 22:36:33 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/delta.rb: added an rdoc tag.
-
-Sun Oct 17 10:47:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_mod_remove_const): update rdoc.
-	  [ruby-core:31957]
-
-Sun Oct 17 10:40:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_define_{class,module}_id_under): register to be
-	  marked, which probably are defined and used internally.
-
-Sat Oct 16 11:10:55 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_encoding2cp): set codepage 20936
-	  according to GB2312. [Bug #3937] [ruby-core:32758]
-
-Sat Oct 16 10:54:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (CPP): already used in .c.i rule.
-
-	* cygwin/GNUmakefile.in (DLLWRAP, WINDRES): add --driver-name and
-	  --preprocessor options explicitly.  [ruby-core:32776]
-
-Sat Oct 16 10:06:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/sdbm/_sdbm.c (SEEDUPS, BADMESS): make settable using command
-	  line options.
-
-	* ext/sdbm/_sdbm.c (makroom): suppress unused result warning.
-
-	* ext/sdbm/extconf.rb: disable BADMESS, a library should not emit
-	  messages directly.
-
-Sat Oct 16 08:39:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_strerror): get English message first, instead of
-	  system default. see [ruby-dev:42358].
-
-Sat Oct 16 00:08:00 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* hash.c (rb_hash_aref): skip calling "default" method
-	  if it is not needed, for speed-up.
-
-Fri Oct 15 23:36:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (NUM2DEVT, DEVT2NUM, PRI_DEVT_PREFIX): fallback to
-	  unsigned int.
-
-Fri Oct 15 22:54:46 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_hresult2msg): get English message first,
-	  instead of system default. [ruby-core:32765]
-
-Fri Oct 15 22:47:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (VALUE): prefer long over uintptr_t,
-	  FIX2LONG expects VALUE to be long at least.
-
-	* include/ruby/ruby.h (FIX2LONG): parenthesize the argument.
-
-Fri Oct 15 20:30:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (dev_t): use RUBY_REPLACE_TYPE.
-
-	* file.c (rb_stat_inspect): use PRI_DEVT_PREFIX.
-
-Fri Oct 15 17:26:57 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* pack.c (pack_pack): simplify comparison of explicit_endian
-	  as pointed by nobu.
-
-	* pack.c (pack_unpack): ditto.
-
-Fri Oct 15 16:40:37 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* pack.c (pack_pack): fix more than one modifiers appear in the
-	  format string. [ruby-core:32793]
-
-	* pack.c (pack_unpack): ditto.
-
-Thu Oct 14 23:20:42 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_folderitem2_invokeverb.rb: refactoring.
-
-Thu Oct 14 22:18:29 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def, iseq.c, vm_insnhelper.c: rename variable name
-	  (ip -> iseq).
-
-Thu Oct 14 20:41:27 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* pack.c (pack_pack): support endian modifiers: < and >.
-	  [ruby-dev:42376] Feature #3491
-
-	* pack.c (pack_unpack): ditto.
-
-Thu Oct 14 20:50:51 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (reg_get_val): expand environment in
-	  the pathname. [Bug #3907]
-
-Thu Oct 14 07:35:07 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (DEVT2NUM): added. Size of dev_t is depend on the
-	  environment even if POSIX defines dev_t as unsigned integer.
-	  For example, OpenVMS, 64bit Solaris 9, and NetBSD 6 defines
-	  dev_t as 64bit unsigned integer.
-
-	* file.c (rb_stat_dev): use DEVT2NUM.
-
-	* file.c (rb_stat_dev_major): dev_t is not long. major(3)'s return
-	  value is int.
-
-	* file.c (rb_stat_dev_minor): dev_t is not long. minor(3)'s return
-	  value is int.
-
-	* configure.in: check size of dev_t.
-
-Thu Oct 14 07:22:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_and, rb_ary_or), class.c (rb_mod_init_copy),
-	  gc.c (undefine_final), time.c (time_mload): get rid of
-	  type-punning casts.
-
-Thu Oct 14 04:16:41 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (ruby_float_step): fix Numeric#step with infinity unit
-	  doesn't works well. [ruby-core:32779]
-
-Wed Oct 13 23:16:46 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/enc-unicode.rb: get rid of lots of warnings.
-
-	* iseq.c (insn_operand_intern, rb_iseq_disasm): fix format specifiers.
-
-	* vm.c (thread_free): ditto.
-
-	* numeric.c (check_uint): get rid of overflow on LLP64 platforms.
-
-	* insns.def (opt_case_dispatch): use st_data_t.
-
-Wed Oct 13 22:32:34 2010  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/util.rb (CGI::unescape): bugfix to unescape the multibyte
-	  string. Thanks nobu and tDiary dev members. [Bug #3909]
-
-Wed Oct 13 21:13:00 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (int_chr): raise error when the value is negative.
-
-Wed Oct 13 19:24:08 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* vm.c (ruby_vm_destruct): This function type was wrong; correct to the prototype.
-
-Wed Oct 13 14:58:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (rb_num_to_uint): fix 32bit logic.
-
-Wed Oct 13 12:53:43 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (rb_num_to_uint): added to check the range of arguments.
-	  Mainly for negative value with NUM2UINT on 32bit environment.
-
-	* string.c (rb_str_concat): use rb_num_to_uint.
-
-Wed Oct 13 12:10:02 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (w32_error): get English message first, instead
-	  of system default. see [ruby-core:32765].
-	  [experimental]
-
-Wed Oct 13 11:04:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* debug.c (ruby_set_debug_option): define always for binary
-	  compatibility with debug env enabled binary.
-
-	* signal.c (ruby_enable_coredump): ditto.
-
-Wed Oct 13 10:52:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (ruby_executable_node): missing prototype.
-
-Wed Oct 13 05:23:04 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* missing/strchr.c: add strlen's prototype.
-
-	* missing/strstr.c: ditto.
-
-Wed Oct 13 00:21:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/rubyext.c (struct mktime_arg): constified.
-
-	* ext/syck/rubyext.c (mktime_do, mktime_r, rb_syck_mktime): fix
-	  function signatures.
-
-Wed Oct 13 00:18:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c (MurmurMagic): get rid of literal overflow.
-
-	* configure.in (RUBY_CHECK_PRINTF_PREFIX): check for printf format
-	  specifier if possible.
-
-Tue Oct 12 23:58:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_open_osfhandle, rb_w32_wopen, rb_w32_pipe):
-	  use uintptr_t instead of long for win64.
-
-	* win32/win32.c (socketpair_internal): suppress warnings.
-
-	* win32/win32.c (ftruncate): use HANDLE instead of long for win64.
-
-	* vsnprintf.c (BSD_vfprintf): fix cast.
-
-	* numeric.c (rb_num2fix): result of rb_num2long is SIGNED_VALUE.
-
-	* compile.c (iseq_build_body), error.c (set_syserr, get_syserr),
-	  (syserr_initialize), gc.c (define_final, rb_gc_copy_finalizer),
-	  (run_final), hash.c (rb_hash_aref, rb_hash_lookup2),
-	  (rb_hash_fetch_m, rb_hash_clear, rb_hash_aset, eql_i),
-	  iseq.c (iseq_load, iseq_data_to_ary), marshal.c (r_symlink),
-	  thread.c (rb_thread_local_aref),
-	  variable.c (generic_ivar_remove, ivar_get, rb_const_get_0),
-	  (rb_cvar_get), vm.c (rb_vm_check_redefinition_opt_method),
-	  vm_insnhelper.c (vm_get_ev_const), vm_method.c (remove_method),
-	  ext/iconv/iconv.c (map_charset): use st_data_t.
-
-	* compile.c (iseq_build_body), insns.def (getglobal, setglobal),
-	  iseq.c (iseq_load, iseq_data_to_ary), util.c (valid_filename):
-	  use VALUE.
-
-	* gc.c (obj_free, rb_objspace_call_finalizer): fix truncating
-	  cast.
-
-	* gc.c (mark_current_machine_context): suppress warnings.
-
-	* compile.c (iseq_compile_each): fix truncating cast.
-
-	* cont.c (fiber_setcontext): missing variable definition.
-
-Tue Oct 12 19:25:13 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* error.c (exc_to_s): use OBJ_INFECT.
-
-	* error.c (name_err_to_s): ditto.
-
-	* error.c (name_err_mesg_to_str): ditto.
-
-	* error.c (syserr_initialize): ditto.
-
-Tue Oct 12 19:07:55 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* error.c (syserr_initialize): taint message if mesg is given
-	  and it is tainted.
-
-Tue Oct 12 18:25:43 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_io_ungetc): always see Bignum. On 32bit valid value
-	  may be a Bignum. On 64bit for errors. [ruby-dev:42366]
-
-Tue Oct 12 18:25:04 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_concat): use unsigned int for GB18030.
-
-Tue Oct 12 17:53:49 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric (check_uint): the mask must refer to VALUE.
-
-Tue Oct 12 17:47:10 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric (check_uint): set MSB for negative value.
-
-	* numeric (rb_num2uint): return value's type of rb_num2ulong
-	  is VALUE.
-
-	* numeric (int_chr): variable i can't be negative.
-
-Tue Oct 12 16:04:37 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_strerror): get English message first, instead
-	  of system default. see [ruby-dev:42358].
-	  [experimental]
-
-Tue Oct 12 15:52:35 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_strerror): unmap some range of errno for
-	  workaround of VC10's strerror() and sys_nerr problem.
-	  based on a patch from Akio Tajima, [ruby-dev:42355].
-
-Tue Oct 12 15:36:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_io_ungetc): use unsigned int for GB18030.
-
-Tue Oct 12 15:14:21 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_io_putc): support multibyte characters.
-	  [ruby-core:30697]
-
-Tue Oct 12 15:10:31 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (rb_enc_uint_chr): split from int_chr.
-
-	* numeric.c (int_chr): use rb_enc_uint_chr.
-
-	* include/ruby/encoding.h (rb_enc_uint_chr): added.
-
-Tue Oct 12 14:04:41 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (int_chr): a codepoint of Ruby M17N must be 32bit
-	  unsigned int; GB18030 uses MSB. Also note that OnigCodePoint
-	  is defined as unsigned int.
-
-Tue Oct 12 12:20:54 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_dump.c (dump_thread): foolish mistake.
-
-Tue Oct 12 10:39:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_MINGW32): canonicalize only on mingw.
-
-Mon Oct 11 20:20:23 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (HTTP.get): specify ASCII-8BIT as the result
-	  encoding of Zlib::GzipReader.
-	  http://hibari.2ch.net/test/read.cgi/tech/1281473294/271
-
-Mon Oct 11 17:42:54 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* error.c (syserr_initialize): use mesg's encoding when locale
-	  encoding is US-ASCII. If locale encoding is not US-ASCII,
-	  assume err has non ASCII characters. [ruby-dev:42358]
-
-Mon Oct 11 14:03:54 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* error.c (syserr_initialize): set the encoding of Errno::*#message
-	  as locale. [ruby-dev:42358]
-
-Mon Oct 11 06:38:27 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_set_encoding):
-	  StringIO#set_encoding can get 2nd argument and optional hash
-	  for API compatibility to IO. [ruby-dev:42356]
-
-Mon Oct 11 06:11:30 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_io_set_encoding): use rb_funcall2 when the io is not
-	  a T_FILE. [ruby-dev:42356]
-
-Sun Oct 10 18:42:23 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#replace): Apply a bit of optimization.
-
-Sun Oct 10 10:20:07 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_MINGW32): canonicalize as like mswin version.
-
-Sun Oct 10 05:33:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_signal_buff_size, rb_signal_exec): moved
-	  declarations from thread.c.
-
-Sat Oct  9 16:54:28 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RSHIFT): quote to get rid of argument expansion
-	  for autoconf 2.68.
-
-Sat Oct  9 11:00:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_reset_event_flags, exec_event_hooks): ignore
-	  hooks marked as removed.
-
-	* thread.c (thread_exec_event_hooks): remove hooks to be removed.
-
-	* thread.c (rb_threadptr_remove_event_hook, rb_remove_event_hook):
-	  defer removing hooks if running the hooks.  [ruby-dev:42350]
-
-Sat Oct  9 10:51:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_threadptr_exec_event_hooks): suppress each event
-	  hooks separately.
-
-	* thread.c (thread_suppress_tracing): split from
-	  ruby_suppress_tracing, accepting thread pointer and event mask.
-
-Sat Oct  9 08:16:01 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_threadptr_remove_event_hook): fix typo.
-
-Fri Oct  8 10:52:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (RBCONFIG): depends on version.h due to
-	  RUBY_PATCHLEVEL.  [ruby-core:32709]
-
-Fri Oct  8 00:24:54 2010  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: Fixing documentation typos.  [ruby-core:32712]
-
-Thu Oct  7 09:14:28 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm_exec.c (vm_exec_core):  Treat clang as non gcc on this
-	  context: It has __asm__ but doesn't works well.
-
-Wed Oct  6 12:28:22 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/uri/generic.rb (URI::Generic#hostname): new method.
-	  (URI::Generic#hostname=): ditto.
-
-	* lib/open-uri.rb: use URI#hostname
-
-	* lib/net/http.rb: ditto.
-
-	  reported by Adam Majer.  [ruby-core:32056]
-
-Wed Oct  6 11:52:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (fptr_finalize): write_mutex might have been destroyed
-	  already in finalization phase, as the order of finalizers is not
-	  guaranteed.  rb_mutex_t should be used in place of Mutex object
-	  in the future.
-
-Tue Oct  5 22:17:02 2010  wanabe  <s.wanabe@gmail.com>
-
-	* win32/mkexports.rb: revert r29320 and r29402.
-
-Mon Oct  4 12:43:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (regexp): dregexp has literal string only at the head
-	  and successors are array.  [ruby-core:32682]
-
-Mon Oct  4 10:22:21 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* random.c (rand_init): This checks the value is in 32bit or not,
-	  so use int32_t, not int.
-
-Mon Oct  4 09:47:39 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* random.c (rand_init): remove useless assignment.
-
-	* re.c (update_char_offset): remove unused variable.
-
-	* re.c (read_escaped_byte): ditto.
-
-Mon Oct  4 09:30:42 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/lib/openssl/bn.rb (Integer#to_bn): OpenSSL::BN.new
-	  accepts only Strings, so call Integer#to_s(16).
-	  16 is for an optimization. [ruby-dev:42336]
-
-Mon Oct  4 07:57:51 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* cont.c (fiber_memsize): Return size.
-	  Before this change, fiber_memsize always returns 0.
-
-Mon Oct  4 07:16:55 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/unicode.c (onigenc_unicode_property_name_to_ctype):
-	  remove useless assignment.
-
-	* vm.c (vm_make_proc_from_block): ditto.
-
-	* variable.c (rb_ivar_count): ditto.
-
-Mon Oct  4 06:40:24 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* Makefile.in (clean-rdoc): Don't use \ in variable expansion.
-	  BSD make treats it as an escape character.
-
-Mon Oct  4 00:01:53 2010  wanabe  <s.wanabe@gmail.com>
-
-	* tool/config.sub: revert r29320, r29324, r29347, r29354, r29365
-	  to automake-1.11.1. [ruby-core:32634]
-
-	* win32/mkexports.rb: no longer use 'mingw64'. a patch from Luis Lavena
-	  at [ruby-core:32678].
-
-Sun Oct  3 20:36:37 2010  Akio Tajima (arton)  <artonx@yahoo.co.jp>
-
-	* test/win32ole/test_folderitem2_invokeverb.rb: Change creating
-	  shortcut verb to 'Link' [Bug #3339]
-
-Sun Oct  3 19:44:23 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (Makefile): get rid of duplicated ruby target when
-	  already there it was.
-
-Sat Oct  2 22:59:32 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_thread.rb: add for win32ole with Thread.
-
-Fri Oct  1 17:03:00 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* test/webrick/test_httpproxy.rb (TestWEBrickHTTPProxy::test_upstream_proxy):
-	  My machine fails this test at this line, saying 503 service unavailable.
-
-Thu Sep 30 16:11:08 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_getenv): should return NULL if specified name
-	  is empty. a patch from Heesob Park at [ruby-core:32650]
-
-Thu Sep 30 15:18:23 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (command_asgn): allow command_call to be right hand side
-	  expression of chained assignment.  [ruby-dev:42313]
-
-Thu Sep 30 10:55:38 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* hash.c (ruby_setenv): workaround for old Windows. a patch from
-	  Heesob Park. [ruby-core:32353]
-
-Thu Sep 30 09:29:06 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (URI.encode_www_form): change treatment of
-	  undefined value in given array as latest internet draft for
-	  application/www-form-urlencoded.
-	  http://tools.ietf.org/html/draft-hoehrmann-urlencoded-01
-
-Thu Sep 30 09:34:03 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_dump.c (dump_thread): fixed wrong type of return value of
-	  SymGetModuleBase64(). [ruby-dev:42306]
-
-Wed Sep 29 21:04:05 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions::test_script_from_stdin):
-	  As usual, PTY is not always available.
-
-Wed Sep 29 18:38:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/config.sub (x64): regularize only for pc vendor, and strip
-	  useless 64 suffix.
-
-Wed Sep 29 17:53:02 2010  Kenta Murata <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BIGDECIMAL_ENABLE_VPRINT):
-	  VPrint is usually disabled.  It's only used in debugging.
-
-Wed Sep 29 17:41:34 2010  Kenta Murata <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_save_limit):
-	  return the result of a block.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_save_limit):
-	  add a test for the above change.
-
-Wed Sep 29 16:18:03 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_dump.c (dump_thread): remove unused optional arguments.
-
-Wed Sep 29 13:26:30 2010  Kenta Murata <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_save_rounding_mode):
-	  return the result of a block.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_save_rounding_mode):
-	  add a test for the above change.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_save_exception_mode):
-	  add a test for the return value of BigDecimal.save_exception_mode.
-
-Wed Sep 29 12:45:30 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_div2, BigDecimal_add2,
-	  BigDecimal_sub2, BigDecimal_mult2, VpLimitRound): remove meaningless
-	  casts to get rid of compiler warnings.
-
-Wed Sep 29 12:35:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VPrint, VpToString): fix format.
-
-Wed Sep 29 12:31:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/known_classes.rb (RDoc::KNOWN_CLASSES): add Encoding.
-
-Tue Sep 28 20:50:23 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/config.sub (x64): regularize same as mswin.
-
-Tue Sep 28 20:06:14 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_dump.c (rb_vm_bugreport): add windows support.
-	  based on patches from Peter Weldon at [ruby-core:32551]
-
-Mon Sep 27 23:30:34 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (opt_case_dispatch), vm_insnhelper.c:
-	  execute the procedures of "when" clauses by bytecode
-	  instead of st_foreach() when the object does not hit
-	  prepared hash.  [ruby-dev:42304]
-
-Mon Sep 27 15:54:03 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* test/net/http/test_https.rb: As always, localhost is not
-	  guaranteed to be resolved as 127.0.0.1.  But a SSL
-	  certificate needs a socket to listen on a specific address
-	  where a CN resolves to.  On situations where localhost is
-	  not 127.0.0.1, these tests are not possible.
-
-Mon Sep 27 15:25:05 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* test/net/imap/test_imap.rb: resurrection of r29259.
-	  this change depends on minitest 1.7.1.
-
-	* lib/test/unit/assertions.rb: ditto.
-
-Sun Sep 26 22:59:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/config.sub (x86_64-pc-mingw64): regularize.
-
-Sun Sep 26 22:21:07 2010  wanabe  <s.wanabe@gmail.com>
-
-	* ext/openssl/ossl_hmac.c (ossl_hmac_hexdigest, ossl_hmac_s_hexdigest),
-	  ext/openssl/ossl_pkey_ec.c (ossl_ec_group_set_seed),
-	  ext/openssl/ossl_ssl_session.c (ossl_ssl_session_to_der),
-	  ext/openssl/ossl_pkcs7.c (numberof): suppress warnings.
-	  [ruby-core:31932]
-
-Sun Sep 26 10:25:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/config.{guess,sub}: updated to automake-1.11.1.
-
-Sat Sep 25 22:48:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBRUBY_DLDFLAGS): fix quoting.
-
-Sat Sep 25 10:30:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBRUBY_DLDFLAGS): use -unexported_symbol only
-	  when available.  http://trac.macports.org/ticket/26341
-
-Sat Sep 25 10:05:49 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* configure.in: Always add -mieee for Renesas SH4.
-	  Thanks, Nobuhiro Iwamatsu. [Feature #3874] [ruby-core:32548]
-
-Sat Sep 25 01:34:41 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (install-cross): target to install cross-compiling
-	  stuff.
-
-Fri Sep 24 23:44:59 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (sym_call), vm.c (invoke_block_from_c),
-	  vm_insnhelper.c (vm_yield_with_cfunc): pass given block.
-	  [ruby-core:32075]
-
-	* vm_eval.c (rb_funcall_passing_block): new function to call
-	  method with passing given block.
-
-Fri Sep 24 15:50:43 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_to_i): fix rdoc: String#to_i raises an
-	  exception when base is invalid. [ruby-core:31685]
-
-Fri Sep 24 15:28:35 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_rindex): use rb_enc_prev_char instead of repeated
-	  str_nth.
-	  patched by Michael Selig [ruby-core:32498]
-
-Fri Sep 24 14:19:12 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* test/test_pty.rb: Same as 229281; existence of PTY class do not
-	  guarantee a successful pty operation.
-
-Fri Sep 24 06:25:55 2010  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.7.2 r5879.
-	* test/minitest/*.rb: ditto.
-
-Thu Sep 23 23:09:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_get_cref0): cref is stacked only in normal
-	  iseqs, so check if it is the case first.
-
-Thu Sep 23 23:08:41 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/config.sub: mingw64 should use x86_64.  [ruby-core:32514]
-
-Thu Sep 23 21:40:40 2010  wanabe  <s.wanabe@gmail.com>
-
-	* ext/socket/raddrinfo.c (init_addrinfo, inspect_sockaddr): suppress
-	  warnings.  see [ruby-core:31932].
-
-Thu Sep 23 19:27:57 2010  wanabe  <s.wanabe@gmail.com>
-
-	* thread_win32.c (w32_wait_events, w32_close_handle): suppress warnings.
-	  see [ruby-core:31932].
-
-Thu Sep 23 18:54:39 2010  wanabe  <s.wanabe@gmail.com>
-
-	* tool/config.sub: add mingw64.
-
-	* win32/mkexports.rb (Exports::Mingw64): added.
-
-	* win32/mkexports.rb (Exports::Mingw32): renamed from Exports::Mingw.
-
-Thu Sep 23 09:01:28 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_cref_push): no outer cref is needed for proc
-	  from method.  Bug #3786, Bug #3860, [ruby-core:32501]
-
-Wed Sep 22 17:12:01 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/openssl/utils.rb (OpenSSL#silent): always restore $VERBOSE.
-	  [ruby-dev:42285]
-
-Wed Sep 22 16:59:40 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/test_prime.rb (TestPrime#test_new): the warning expected have
-	  not been displayed when $VERBOSE == nil. Patch by Shota Fukumori
-	  a.k.a. sora_h. [ruby-dev:42272]
-	  Recovers $stderr even if StringIO.new fails. Reported by unak.
-
-Wed Sep 22 01:55:48 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_method.rb: fix last commit.
-
-Wed Sep 22 01:49:52 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_method.rb: add a test for [ruby-core:30534].
-
-Wed Sep 22 00:52:44 2010  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* lib/rdoc/ri/store.rb (save_cache): remove duplicate entries.
-
-Wed Sep 22 00:00:05 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_f_pathname): Pathname() translated
-	  from pathname.rb.
-
-Tue Sep 21 22:18:30 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/mkconfig.rb: fixed build problem on mswin64 introduced in r29278.
-
-Tue Sep 21 02:42:35 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/pathname/test_pathname.rb (TestPathname#test_mkdir): fix typo.
-
-Mon Sep 20 23:23:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (bracket): get rid of scanning at the end of the pattern
-	  string, not to raise an exception while globbing command line.
-	  [ruby-core:32478]
-
-Mon Sep 20 11:25:49 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (Init_pathname): Pathname#=~ undefinition
-	  translated from pathname.rb.
-
-Mon Sep 20 02:34:11 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (check_rounding_mode, BigDecimal_mode):
-	  raise ArgumentError instead of TypeError passing invalid modes.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_mode, test_round):
-	  change against the above modifications.
-
-Sun Sep 19 22:08:39 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/mkmf.rb (try_link): rdoc
-	  (try_compile): ditto
-	  (try_cpp): ditto
-	  (try_func): ditto
-	  (try_var): ditto
-	  (try_run): ditto
-	  (egrep_cpp): ditto
-
-Sun Sep 19 20:43:33 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in (--disable-install-doc): disables capi too, in addition
-	  to rdoc.
-	  (--disable-install-rdoc): a new option for disabling only rdoc.
-	  (--disable-install-capi): a new option for disabling only capi.
-
-Sun Sep 19 20:37:45 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (clean): removes all documents on cleaning.o
-	  (CAPIOUT): new variable.
-	  (clean-capi, distclean-capi, realclean-capi): new targets
-
-	* Makefile.in (clean-capi, distclean-capi, realclean-capi): ditto.
-
-	* win32/Makefile.sub (clean-capi, distclean-capi, realclean-capi):
-	  ditto.
-
-Sun Sep 19 13:44:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBRUBY_SO): fix an oversight of replace
-	  RUBY_INSTALL_NAME with RUBY_SO_NAME.  a patch from Jeremy Evans
-	  at [ruby-core:32474].
-
-Sun Sep 19 07:48:20 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_unlink): Pathname#unlink and
-	  Pathname#delete translated from pathname.rb.
-
-Sun Sep 19 06:06:07 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (check_rounding_mode): added for
-	  converting symbol to rounding mode number.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_mode, BigDecimal_round):
-	  support to specify rounding mode by symbol.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_mode, test_round):
-	  add tests for above changes.
-
-Sun Sep 19 05:14:35 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c: fix rounding algorithms for half-down
-	  and half-even.  This change is based on the patch created by Matthew
-	  Willson, the reporter of this bug.  [Bug #3803] [ruby-core:32136]
-
-	* test/bigdecimal/test_bigdecimal.rb: add tests for above changes.
-
-Sat Sep 18 20:09:51 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_each_entry): Pathname#each_entry
-	  translated from pathname.rb.
-
-Fri Sep 17 23:44:07 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rexml/xpath_parser.rb, test/rexml/test_xpath.rb:
-	  add missing method availability check. [ruby-core:32447]
-	  Reported by Wiebe Cazemier. Thanks!!!
-
-Fri Sep 17 23:23:26 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_sax.rb: don't use thread and sleep to avoid slow test.
-
-Fri Sep 17 23:10:44 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_core.rb: enable.
-
-Fri Sep 17 22:46:02 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/: untabify.
-
-Fri Sep 17 22:29:56 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/: fix fixture data path. All REXML tests are worked.
-
-Fri Sep 17 22:15:15 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/test_listener.rb: remove needless codes.
-
-Fri Sep 17 22:12:23 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rexml/: import REXML tests from
-	  http://www.germane-software.com/repos/rexml/trunk/test/.
-	  Many tests are failed temporary. I'll fix them quickly. Sorry.
-
-Fri Sep 17 16:48:49 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* test/io/console/test_io_console.rb (TestIO_Console::helper):
-	  PTY.open is not guaranteed to work.  On my machine opening a
-	  pty is prohibited via process control group.  On those cases
-	  exceptions shall occur, and that doesn't mean our fault.
-	  Skip those tests on such situations.
-
-Fri Sep 17 08:30:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tracer.rb: count only non-internal libraries in stack trace,
-	  ignoring custom_require.  [ruby-core:31858]
-
-Fri Sep 17 02:18:41 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* tool/mkconfig.rb: Fix build with m4 1.4.15 generating duplicate
-	  lines in config.status.  According to nobu, the mswin32 port may
-	  depend on the piece of code in question, so the behavior is left
-	  unchanged on mswin32.
-
-Thu Sep 16 23:47:59 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_opendir): Pathname#opendir translated
-	  from pathname.rb.
-
-Thu Sep 16 21:40:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit::GlobOption): merged RejectOption.
-
-	* test/runner.rb: utilize GlobOption.
-
-Thu Sep 16 21:31:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/ri/driver.rb (RDoc::RI::Driver.setup_options)
-	  (RDoc::RI::Driver.fixup_options): split from process_args.
-	  libraries should not parse ARGV inside, since it's a task of
-	  applications, not libraries.
-
-Thu Sep 16 21:02:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/ri/paths.rb (RDoc::RI::Paths.each): HOMEDIR can be nil
-	  if $HOME is unset.
-
-Thu Sep 16 14:50:42 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* test/ruby/test_file_exhaustive.rb (TestFileExhaustive::test_expand_path):
-	  ENV["HOME"] might not be set.  On those cases without it an
-	  exception raises here, which effectively disables later
-	  tests on this method.
-
-Thu Sep 16 08:30:28 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_f_sprintf): fix rdoc.  pointed out by Tomoyuki
-	  Chikanaga at [ruby-core:32395], and a patch from Daniel
-	  Bovensiepen at [ruby-core:32403].
-
-Thu Sep 16 08:27:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/extconf.rb: use expanded sysconfdir with empty DESTDIR.
-	  [ruby-core:32394]
-
-Thu Sep 16 06:07:24 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_rmdir): Pathname#rmdir translated
-	  from pathname.rb.
-
-Thu Sep 16 00:36:25 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/readline/extconf.rb: Remove Readline 6 check because
-	  Ruby's license is now GPLv3 compatible. [ruby-core:28736]
-
-Thu Sep 16 00:26:00 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* COPYING: change Ruby's License from a dual license with GPLv2
-	  to a dual license with 2-clause BSDL.
-	  [ruby-dev:42166] [ruby-core:31971]
-	  [ruby-dev:39167] [ruby-core:25272]
-
-	* COPYING.ja: ditto.
-
-	* BSDL: added. this is from The FreeBSD License.
-
-Wed Sep 15 21:07:06 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_mkdir): Pathname#mkdir translated
-	  from pathname.rb.
-
-Wed Sep 15 13:37:00 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* test/net/imap/test_imap.rb: "localhost" not guaranteed to
-	  resolve to "127.0.0.1".  On my machine it is "::1" instead.
-	  The problem is, you have to connect to the imaps server via
-	  the canonical name written in a server certificate, and that
-	  of the server.cert is "localhost".  So you have to listen to
-	  the address of what "localhost" resolves to.  I think this
-	  situation cannot be resolved in a handy manner because the
-	  test "test_imaps_post_connection_check" is actually
-	  expecting to connect to a server via an address other than
-	  the CN.  On my machine several assertions won't pass because
-	  the test cannot connect to the server.
-
-Wed Sep 15 09:12:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_puts): fix for wide char encoding strings.
-	  [ruby-dev:42212]
-
-Wed Sep 15 07:27:52 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_format_m): mentioned about Hash argument.  a patch
-	  from Daniel Bovensiepen at [ruby-core:32386].
-
-	* sprintf.c (get_hash): ditto, and fix typo.
-
-Wed Sep 15 07:22:20 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_entries): Pathname#entries translated
-	  from pathname.rb.
-
-Wed Sep 15 02:13:44 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/fiddle/closure.c : Don't use FFI closure alloc on OpenBSD.
-	  Thanks Jeremy Evans! [ruby-core:32384]
-
-Tue Sep 14 20:17:48 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_s_getwd): Pathname.getwd and
-	  Pathname.pwd translated from pathname.rb.
-
-Tue Sep 14 05:13:04 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_s_glob): Pathname.glob translated
-	  from pathname.rb.
-
-Tue Sep 14 01:24:51 2010  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* ext/socket/raddrinfo.c (ruby_getaddrinfo__aix): suppress a
-	  warning.
-
-Mon Sep 13 20:48:30 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_zero_p): Pathname#zero? translated
-	  from pathname.rb.
-
-Mon Sep 13 19:56:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/rubysocket.h (__DARWIN_ALIGNBYTES): workaround of a
-	  bug in system header of darwin 9.  [ruby-core:32341]
-
-Mon Sep 13 18:11:55 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (try_do): fix typo.  a patch from Peter Weldon
-	  at [ruby-core:32327].
-
-Mon Sep 13 10:12:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* util.c (ruby_strtod): reject Float('0x0.').
-	  [ruby-dev:42239] Bug #3820
-
-Mon Sep 13 09:23:58 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/ossl_bn.c (ossl_bn_is_prime): fix comparison
-	  with rb_scan_args. Before this fix, OpenSSL::BN#prime?
-	  is fully broken. [ruby-dev:42225]
-
-Mon Sep 13 06:45:24 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_writable_real_p):
-	  Pathname#writable_real? translated from pathname.rb.
-
-Sun Sep 12 21:21:50 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: [ruby-core:32096]  Thanks Colin Bartlett.
-
-Sun Sep 12 19:30:27 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_world_writable_p):
-	  Pathname#world_writable? translated from pathname.rb.
-
-Sun Sep 12 09:16:06 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_writable_p): Pathname#writable?
-	  translated from pathname.rb.
-
-Sun Sep 12 08:36:15 2010  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rlimit_resource_name2int): support more limits:
-	  RLIMIT_MSGQUEUE, RLIMIT_NICE, RLIMIT_RTPRIO, RLIMIT_RTTIME and
-	  RLIMIT_SIGPENDING.
-	  (Init_process): ditto.
-	  patch by Run Paint Run Run.  [ruby-core:32262]
-
-Sun Sep 12 04:27:13 2010  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rlimit_resource_name2int): use STRCASECMP to avoid
-	  ALLOCA_N.
-
-Sat Sep 11 16:47:41 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (ruby_setenv): raise if putenv and SetEnvironmentVariable
-	  failed, because of the restriction of the size on Windows.
-	  based on a patch from Peter Weldon at [ruby-core:32304].  fix:
-	  Bug#3812, [ruby-core:32250]
-
-Sat Sep 11 15:19:57 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/webrick/httpauth/digestauth.rb (WEBrick::Config::DigestAuth):
-	  Add documentation
-
-	* lib/webrick/config.rb (WEBrick::Config::DigestAuth): Add
-	  documentation
-
-Sat Sep 11 12:32:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_set_kcode, rb_get_kcode): removed
-	  zombie prototype declarations.  a patch from Eric Hodel
-	  at [ruby-core:32305].
-
-Sat Sep 11 06:53:12 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_symlink_p): Pathname#symlink?
-	  translated from pathname.rb.
-
-Fri Sep 10 23:03:43 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_sticky_p): Pathname#sticky? translated
-	  from pathname.rb.
-
-Fri Sep 10 19:11:13 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/webrick/httprequest.rb (WEBrick::HTTPRequest#continue): add
-	  method for generating HTTP/1.1 100 continue response if the client
-	  expects it, otherwise does nothing.  Patch by Brian Candler.
-	  ref #855.
-
-	* test/webrick/test_httprequest.rb: test added.
-
-Fri Sep 10 17:49:34 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* ext/openssl/lib/openssl/x509-internal.rb: removed unused local
-	  variable.
-
-	* test/openssl/*: less warnings while test running with -w.
-
-Fri Sep 10 16:49:20 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* class.c (rb_scan_args): Add support for optional keyword
-	  argument hash. [ruby-dev:42221] [ruby-dev:38048]
-
-	* README.EXT, README.EXT.ja: Update documentation accordingly.
-
-	* dir.c (dir_initialize): Make use of the new rb_scan_args()
-	  feature.
-
-	* io.c (rb_io_s_popen, rb_scan_open_args, rb_io_initialize)
-	  (rb_io_s_pipe, open_key_args, io_s_foreach, io_s_readlines)
-	  (rb_io_s_read, rb_io_set_encoding): Ditto.
-
-	* transcode.c (str_transcode, econv_args)
-	  (econv_primitive_convert): Ditto.
-
-	* ext/zlib/zlib.c (rb_gzreader_initialize): Ditto.
-
-Fri Sep 10 10:33:18 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* random.c (rb_genrand_ulong_limited): renamed from
-	  rb_rand_internal and now this is public API.
-
-	* include/ruby/ruby.h (rb_genrand_ulong_limited): added.
-
-	* bignum.c (big_sparse_p): use rb_genrand_ulong_limited.
-
-Fri Sep 10 13:07:22 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* ext/digest/lib/digest.rb: removed unused exception variable
-	  assignment to avoid a warning.
-
-Fri Sep 10 07:29:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_systmpdir): assume system default tmpdir
-	  safe.  [ruby-dev:42089]
-
-Fri Sep 10 07:03:23 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_size_p): Pathname#size? translated from
-	  pathname.rb.
-
-Fri Sep 10 02:15:29 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_peercred): support OpenBSD-current.
-	  patch by Jeremy Evans.  [ruby-core:32240]
-
-Thu Sep  9 23:25:53 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_backtrace_each): skip allocator frames which have no
-	  name.  [ruby-core:32231]
-
-Thu Sep  9 22:39:08 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_size): Pathname#size translated from
-	  pathname.rb.
-
-Thu Sep  9 22:34:48 2010  wanabe  <s.wanabe@gmail.com>
-
-	* compile.c (case_when_optimizable_literal): When float value can be
-	  treated as integer, add to table hash of case that way.
-	  based on a patch from Ikuo KOBORI. [ruby-dev:42038]
-
-	* insns.def (opt_case_dispatch): ditto.
-
-	* test/ruby/test_case.rb: add tests.
-
-Thu Sep  9 17:15:15 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/net/http/test_https.rb (test_identity_verify_failure): follows
-	  the SSL hostname check error message of openssl.
-
-Thu Sep  9 10:44:46 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_env.rb (test_aset): OpenBSD acts like NetBSD in
-	  that it ignores characters after = in ENV.
-	  patched by Jeremy Evans [ruby-core:32184]
-
-Thu Sep  9 09:02:01 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/rbinstall.rb (install?): gemspec filename should include
-	  its version. patched by Luis Lavena [ruby-core:32165]
-
-Wed Sep  8 22:46:31 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl.c (ssl_get_error): Thread context switch was
-	  blocked on Windows while blocking call for SSLSocket.  Need to
-	  convert errno for letting rb_io_wait_readable detect EWOULDBLOCK.
-	  Patch by arton. ref #3794.
-
-Wed Sep  8 20:56:57 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_setgid_p): Pathname#setgid? translated
-	  from pathname.rb.
-
-Wed Sep  8 06:25:41 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_setuid_p): Pathname#setuid? translated
-	  from pathname.rb.
-
-Tue Sep  7 21:03:35 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_readable_real_p):
-	  Pathname#readable_real?  translated from pathname.rb.
-
-Mon Sep  6 23:07:25 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_world_readable_p):
-	  Pathname#world_readable?  translated from pathname.rb.
-
-Mon Sep  6 11:03:13 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* Fixed wrong check of missing functions. Patch by Adrian Quark.
-	  ref #3400
-	  The patch contains following comment:
-	    This patch should avoid unnecessary incompatibility with future
-	    versions of Openssl.  Changes suggested by bmaher_at_amazon.com.
-
-Mon Sep  6 10:46:55 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* Fixed exception message for SSL post connection check failure. Patch
-	  by Paul Betteridge. ref [Bug #3704]
-
-Mon Sep  6 10:31:59 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_s_get_line_buffer):
-	  Readline.line_buffer should return locale string.
-	  [ruby-dev:42184] #3791
-
-Mon Sep  6 09:47:24 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* util.c (ruby_strtod): check there is at least 1 digit after
-	  "0x" before ".". [ruby-dev:42183] #3790
-
-Mon Sep  6 09:44:50 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* util.c (ruby_strtod): check integer overflow.
-	  [ruby-dev:42180] #3789
-
-Mon Sep  6 06:17:21 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_readable_p): Pathname#readable?
-	  translated from pathname.rb.
-
-Sun Sep  5 23:02:34 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_owned_p): Pathname#owned?
-	  translated from pathname.rb.
-
-Sat Sep  4 23:48:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_readlink): symlink target should be in
-	  filesystem encoding.
-
-Sat Sep  4 10:40:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (ruby_init_ext): export for golfers.
-
-	* vm_core.h (rb_iseq_eval, rb_iseq_compile_with_option): ditto.
-
-Sun May 23 17:29:41 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (capi): uses a timestamp file to get rid of
-	  generating twice.
-
-Fri Jun 18 01:33:21 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* enc/Makefile.in (realclean): has been missing. necessary
-	  for make realclean-enc.
-
-Fri Sep  3 23:51:26 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_socket_p): Pathname#socket?
-	  translated from pathname.rb.
-
-Fri Sep  3 06:40:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pty/pty.c (chfunc): pass through exceptions.
-
-	* io.c (rb_io_bufwrite, rb_io_bufread): added.
-
-	* process.c (rb_fork_err): protect from exceptions.
-
-Fri Sep  3 06:16:07 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_pipe_p): Pathname#pipe?
-	  translated from pathname.rb.
-
-Fri Sep  3 06:14:40 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pty/pty.c (chfunc): restore errno from SystemCallError and
-	  propagate proper exception to the parent.  [ruby-dev:41965]
-
-Thu Sep  2 22:10:38 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_file_p): Pathname#file?
-	  translated from pathname.rb.
-
-Thu Sep  2 09:12:02 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn, rb_w32_aspawn): don't forget to free
-	  memory.
-
-Thu Sep  2 09:01:13 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): unicodize.
-
-	* win32/win32.c (rb_w32_spawn, rb_w32_aspawn): convert arguments of
-	  CreateChild() from ACP to WideChar.
-
-Thu Sep  2 06:53:43 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_directory_p): Pathname#directory?
-	  translated from pathname.rb.
-
-Wed Sep  1 22:03:41 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_grpowned_p): Pathname#grpowned?
-	  translated from pathname.rb.
-
-Wed Sep  1 17:39:02 2010  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.7.1 r5835.
-	* test/minitest/*.rb: ditto.
-
-Wed Sep  1 16:50:42 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (tr_setup_table): optimized. don't create hash objects
-	  when given pattern is ASCII only.
-
-	* string.c (tr_find): ditto.
-
-Wed Sep  1 14:35:29 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* array.c (rb_ary_rotate_m): fix typo of rdoc.
-	  patched by Andrei Kulakov [ruby-core:31975]
-
-Wed Sep  1 14:33:36 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enum.c (enum_zip): fix typo of rdoc.
-	  patched by Andrei Kulakov [ruby-core:31974]
-
-Wed Sep  1 12:56:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (ruby_suppress_tracing): restore the state and invoke
-	  the func with normal state.  a patch from Satoshi Shiba <shiba
-	  AT rvm.jp> at [ruby-dev:42162].  [ruby-core:31783]
-
-Tue Aug 31 21:10:23 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_exist_p): Pathname#exist? translated
-	  from pathname.rb.
-
-Tue Aug 31 17:32:34 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/stubs.c: fix [Bug #3771] "VC++ can't make ext/tk with enabling
-	  stubs". Thanks, Akio Tajima [ruby-dev:42159].
-
-Tue Aug 31 03:42:14 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (tr_setup_table): fix bug in r29146.
-	  Initialize table even if cflag is 0; tr_find see whether
-	  del is empty or not.
-
-	* string.c (tr_find): nodel can't be NULL; if NULL, it means
-	  it is not specified.
-
-Mon Aug 30 21:29:21 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_executable_real_p):
-	  Pathname#executable_real? translated from pathname.rb.
-
-Mon Aug 30 15:00:13 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (tr_setup_table): initialize negating table when
-	  negating string is given. [ruby-core:31851]
-
-	* string.c (tr_find): add a sentence for the time when
-	  target characters include negating one.
-
-	* string.c (rb_str_count): move definition.
-
-Mon Aug 30 07:32:41 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_executable_p): Pathname#executable?
-	  translated from pathname.rb.
-
-Sun Aug 29 23:54:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parser/ruby.rb (RDoc#parse_call_parameters): don't
-	  include assignment.  [Bug #3759], [ruby-dev:42154]
-
-	* lib/rdoc/parser/ruby.rb (RDoc#parse_class): ignore non-constant
-	  name singleton class.  [Bug #3759], [ruby-dev:42154]
-
-Sun Aug 29 23:25:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_get_path_check): clarify error message for
-	  ASCII-incompatible path name.
-
-Sun Aug 29 16:02:54 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (node_name.inc): remove command option -n and give
-	  file as stdin, because IronRuby 1.1 still doesn't support it.
-	  So now we can use ir.exe as BASERUBY.
-
-	* tool/node_name.rb: read stdin with while gets.
-
-Sun Aug 29 13:22:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (rb_thread_method_id_and_class): curried proc has no
-	  method.  [ruby-core:31871]
-
-Sun Aug 29 12:51:33 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_provide_feature): clarify error message for frozen
-	  $LOADED_FEATURES.  based on a patch from Run Paint Run Run at
-	  [ruby-core:31913].
-
-Sun Aug 29 12:19:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (load_failed): should honor encoding.  [ruby-core:31915]
-
-Sun Aug 29 09:35:10 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (clean): exclude *.inc. [ruby-dev:41931]
-
-	* common.mk (distclean): include *.inc.
-
-	* common.mk (help): change description about clean and distclean.
-
-Sat Aug 29 06:34:52 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_chardev_p): Pathname#chardev?
-	  translated from pathname.rb.
-
-Sat Aug 28 17:39:33 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_save_exception_mode,
-	  BigDecimal_save_rounding_mode, BigDecimal_save_limit): added.
-
-	* test/bigdecimal/test_bigdecimal.rb: added tests for the above
-	  features.
-
-Sat Aug 28 08:11:05 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_blockdev_p): Pathname#blockdev?
-	  translated from pathname.rb.
-
-Fri Aug 27 16:20:01 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* string.c (rb_str_prepend): new method by Shota Fukumori (sora_h)
-	  [Feature #3765]
-
-Fri Aug 27 15:24:20 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* math.c (math_atan2): you should know that M_PI is not the feature
-	  of C90.
-	  fixed build failure caused by r29115.
-
-Fri Aug 27 15:26:33 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (null_device): move from io.c.
-
-Fri Aug 27 12:47:44 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* math.c (math_atan2): change the behavior when x and y are zero.
-	  [ruby-dev:42090] [Bug #3736] [ruby-dev:42116]
-
-	* test/ruby/test_math.rb (test_atan2): add tests for the above
-	  changes.
-
-Fri Aug 27 12:26:23 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* object.c (rb_obj_class): remove mention of obsolete method.
-	  a patch from Run Paint Run Run at [ruby-core:31842].
-
-Fri Aug 27 12:25:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (null_device): the name of null device.  [ruby-dev:41791]
-
-Fri Aug 27 07:57:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_shuffle_bang): bail out from modification during
-	  shuffle.
-
-	* array.c (rb_ary_sample): ditto.
-
-Fri Aug 27 05:11:51 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_sysopen): Pathname#sysopen translated
-	  from pathname.rb.
-
-Thu Aug 26 22:53:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_shuffle): rdoc fix.  argument name was missing.
-	  a patch from Run Paint Run Run at [ruby-core:31848].
-
-Thu Aug 26 21:49:46 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_readlines): Pathname#readlines
-	  translated from pathname.rb.
-
-Thu Aug 26 10:37:00 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regint.h (OnigStackIndex): the type should be intptr_t.
-	  Original Oniguruma assumes the size of long and that of void *
-	  are equal, but it's not true on LLP64 platform: mswin64.
-	  originally patched by shintaro kuwamoto [ruby-dev:42133]
-
-Thu Aug 26 10:38:11 2010  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* test/dl/test_base.rb: AIX does not have dynamically loadable lib[cm].
-
-	* test/fiddle/helper.rb: AIX does not have dynamically loadable lib[cm].
-
-Thu Aug 26 09:49:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_shuffle_bang): check number of argument.
-
-Tue Aug 26 09:11:40 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (Init_bigdecimal,
-	  rmpd_set_thread_local_exception_mode, VpGetException,
-	  VpSetException): thread-local exception mode.
-
-	* ext/bigdecimal/bigdecimal.c (Init_bigdecimal,
-	  rmpd_set_thread_local_precision_limit, VpGetPrecLimit,
-	  VpSetPrecLimit): thread-local precision limit.
-
-	* ext/bigdecimal/bigdecimal.c (Init_bigdecimal,
-	  rmpd_set_thread_local_rounding_mode, VpGetRoundMode,
-	  VpSetRoundMode, VpException, VpInternalRound):
-	  thread-local rounding mode.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_mode, BigDecimal_round,
-	  VpIsRoundMode, VpGetRoundMode, VpSetRoundMode, VpActiveRound,
-	  VpMidRound, VpLeftRound), ext/bigdecimal/bigdecimal.h:
-	  use unsigned short for rounding mode.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_mode): add test for
-	  setting rounding mode.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_thread_local_mode):
-	  add test for setting mode thread-locally.
-
-Thu Aug 26 07:29:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_{shuffle_bang,sample}): use Random class object.
-
-	* random.c (try_get_rnd): use default_rand for Random as same as
-	  singleton methods.
-
-	* random.c (rb_random_real): check the range of result.
-
-Wed Aug 25 22:11:11 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_binread): Pathname#binread translated
-	  from pathname.rb.
-
-Wed Aug 25 03:42:43 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_call): workaround for VC9 for x64.
-	  reported by kuwamoto shintaro in [ruby-dev:42125].
-
-Tue Aug 24 23:28:50 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* .gitignore: updated.
-
-Tue Aug 24 22:07:28 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_read): Pathname#read translated from
-	  pathname.rb.
-
-Tue Aug 24 10:11:04 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: read API version from include/ruby/version.h.
-
-	* {bcc,win}32/setup.mak (-version-): ditto.
-
-	* version.h (RUBY_LIB_VERSION): use API version numbers.
-
-Tue Aug 24 07:07:28 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_shuffle_bang, rb_ary_sample): add optional
-	  argument random.  [ruby-dev:41923] [EXPERIMENTAL]
-
-	* random.c (rb_random_{int32,real,bytes}): fallback to normal
-	  method invocation.
-
-Tue Aug 24 06:08:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/version.h (RUBY_API_VERSION_*): renamed and moved
-	  from version.h.  [ruby-dev:42103]
-
-Tue Aug 24 05:58:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ChangeLog: flushed.  [ruby-dev:42050]
-
-Tue Aug 24 01:14:58 2010  Kenta Murata <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_f): to_f must underflow
-	  when the exponent is less than DBL_MIN_10_EXP - BASE_FIG.
-
-	* test/bigdecimal/test_bigdecimal.rb (test_to_f): added test for the above changes.
-
-Mon Aug 23 23:14:21 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_each_line): Pathname#each_line
-	  translated from pathname.rb.
-
-Mon Aug 23 22:30:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (version.o): depends on both of version.h and
-	  include/ruby/version.h.   [ruby-dev:42063]
-
-Mon Aug 23 13:09:27 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* backport r29071 from ruby_1_8;
-
-	  * ext/openssl/ossl_asn1.c (obj_to_asn1bool): fixed ASN1::Boolean
-	    encoding issue for OpenSSL 1.0.0 compatibility.
-	    ASN1::Boolean.new(false).to_der wrongly generated "\1\1\377" which
-	    means 'true'.
-
-	    ASN1_TYPE_set of OpenSSL <= 0.9.8 treats value 0x100 as 'false'
-	    but OpenSSL >= 1.0.0 treats it as 'true'.  ruby-ossl was using
-	    0x100 for 'false' for backward compatibility.  Just use 0x0 for
-	    the case OpenSSL >= OpenSSL 0.9.7.
-
-	  * test/openssl/test_asn1.rb: test added.
-
-Mon Aug 23 12:28:58 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_search): fix: 4th argument should be regexp
-	  object. patched by shintaro kuwamoto [ruby-dev:41667] #3459
-
-Mon Aug 23 02:23:05 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* util.c (ruby_strtod): make sure to have digit-sequence after 'p'
-	  for hexadecimal-floating-constant. [ruby-dev:42105]
-
-Mon Aug 23 00:23:07 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: [ruby-core:31695]
-
-Sun Aug 22 09:08:02 2010  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (UINT2NUM): fix ifdef condition for LLP64.
-	  reported by Daniel Gutmanas.  [ruby-core:31778]
-
-Sun Aug 22 06:46:21 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (RAND_UPTO): macro for random number.
-
-Sun Aug 22 05:55:01 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: fix typo.  a patch from Eric Wong at
-	  [ruby-core:31810].
-
-Sat Aug 21 20:09:43 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm.c: add missing prototype of rb_iseq_clone for r29063.
-
-Sat Aug 21 18:54:56 2010  wanabe  <s.wanabe@gmail.com>
-
-	* vm.c (vm_define_method): copy iseq to avoid overwriting iseq->klass.
-	  #2502, #3136. see #2420.
-
-Sat Aug 21 17:36:42 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_split): Pathname#split translated from
-	  pathname.rb.
-
-Fri Aug 20 10:40:04 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_expand_path): Pathname#expand_path
-	  translated from pathname.rb.
-
-Thu Aug 19 22:44:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (usage): add usage.
-
-	* tool/make-snapshot (package): accept revision as BRANCH@REV.
-
-Thu Aug 19 19:53:26 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_timestamp): fix a constant type.
-
-	* ext/socket/raddrinfo.c (get_afamily): suppress a warning.
-
-Thu Aug 19 19:28:47 2010  Tanaka Akira  <akr@fsij.org>
-
-	* thread_pthread.c (native_sleep): suppress a warning for platforms
-	  which time_t is int.
-
-Thu Aug 19 18:15:50 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/merger.rb: Add a tool to merge commits between branches.
-	  developed by URABE Shyouhei
-
-Thu Aug 19 17:19:09 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* backport r28621 and r28632 from ruby_1_8;
-
-	  * ext/openssl/ossl_config.c, ext/openssl/lib/openssl/config.rb,
-	    ext/openssl/lib/openssl.rb: reimplement OpenSSL::Config in Ruby.
-	    Now it should work on windows.
-
-	  * test/openssl/test_config.rb: added tests for OpenSSL::Config#dup.
-
-	  * test/openssl/test_config.rb: added tests for Config#clone.
-
-Thu Aug 19 12:04:39 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* array.c (rb_ary_permutation, rb_ary_repeated_permutation,
-	  rb_ary_repeated_combination, rb_ary_product):
-	  use ary_make_shared_copy instead of ary_make_substitution.
-	  [ruby-dev:42067] [Bug #3708]
-
-	* test/ruby/test_array.rb (test_product, test_repeated_permutation,
-	  test_repeated_combination): append assertions against [Bug #3708].
-
-Thu Aug 19 11:11:24 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enum.c (enum_inject): fix typo of rdoc.
-	  patched by Andrei Kulakov [ruby-core:31768]
-
-Thu Aug 19 10:06:08 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_extname): Pathname#extname translated
-	  from pathname.rb.
-
-Thu Aug 19 06:03:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_push_frame): initialize block_iseq.  a patch
-	  from Peter Weldon at [ruby-core:31757].
-
-Wed Aug 18 19:08:17 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* array.c (ary_make_shared): revert r29037, it occurs SEGV some
-	  situations.
-
-Wed Aug 18 18:36:32 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* array.c (ary_make_shared),
-	  test/ruby/test_array.rb (test_permutation):
-	  always return the original array when it is shared.
-	  [ruby-dev:42067] [Bug #3708]
-
-Wed Aug 18 01:37:49 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regcomp.c: revert r26701; it introduces Bug #3681.
-	  [ruby-core:31677]
-
-Tue Aug 17 20:05:29 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io.rb (test_threaded_flush): test "hi" is not output
-	  twice.
-
-Tue Aug 17 15:13:28 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/date.rb: Re-revert the part of r28950.
-	  It reverted the part of r28619.
-
-Tue Aug 17 13:00:07 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_dirname): Pathname#dirname translated
-	  from pathname.rb.
-
-Tue Aug 17 07:50:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/extconf.rb: check functions more.
-	  [ruby-core:31722]
-
-Tue Aug 17 07:42:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_make_independent_expand): set capacity properly. a
-	  patch from Peter Weldon at [ruby-core:31734].  [ruby-core:31653]
-
-Tue Aug 17 07:38:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gem_prelude.rb, lib/rubygems.rb (Gem.suffixes): include empty
-	  suffix.  [ruby-core:31730]
-
-Mon Aug 16 22:16:12 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_basename): unused variable removed.
-
-Mon Aug 16 21:39:33 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_basename): Pathname#basename translated
-	  from pathname.rb.
-
-Mon Aug 16 20:26:13 2010  Narihiro Nakamura  <narihiro@netlab.jp>
-
-	* gc.c (gc_profile_result): Index begins with 1.
-
-Mon Aug 16 20:21:17 2010  Narihiro Nakamura  <authornari@gmail.com>
-
-	* gc.c (gc_profile_result): use size_t. based on patches from
-	Tomoaki NISHIYAMA <tomoakin@kenroku.kanazawa-u.ac.jp> at
-	[ruby-dev:42042].
-
-Mon Aug 16 19:23:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_dtoa, ruby_hdtoa): use same representations for
-	  Infinity and NaN.  a part of a patch from Peter Weldon at
-	  [ruby-core:31725].
-
-	* util.c (ruby_hdtoa): fixed buffer overrun.  based on a patch
-	  from Peter Weldon at [ruby-core:31725].
-
-Mon Aug 16 17:44:55 2010  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk (capi): use -b option for doxygen.  It disables stdout
-	  buffering and prevents wrong reordering between stdout and stderr
-	  even when the output of "make" is redirected.
-
-Sun Aug 15 19:59:58 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/webrick/httpresponse.rb (WEBrick::HTTPResponse#set_error):
-	  Fix for possible cross-site scripting (CVE-2010-0541).
-	  Found by Apple, reported by Hideki Yamane.
-	  Patch by Hirokazu Nishio <nishio.hirokazu AT gmail.com>.
-
-Mon Aug 16 12:29:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, win32/Makefile.sub (test-rubyspec-precheck): split
-	  from test-rubyspec.
-
-	* common.mk (test-rubyspec): moved from Makefile.in.
-
-Mon Aug 16 10:00:45 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.h (llabs): never never never never never
-	  use "long long".
-
-	* ext/bigdecimal.bigdecimal.c (BigDecimal_to_i): get rid of a warning.
-
-Sun Aug 15 18:14:20 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_dump, BigDecimal_inspect,
-	  VPrint, VpToString, VpVarCheck): use PRIuSIZE, PRIdSIZE, PRIdVALUE,
-	  and PRIxVALUE.
-
-Sun Aug 15 16:14:31 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (Logging.postpone): close @log only when it's available.
-
-Sun Aug 15 13:30:35 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.h (VpVtoD): fix a type of e.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_dump, BigDecimal_inspect):
-	  fix format for size_t.
-
-Sun Aug 15 00:22:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/extconf.rb, ext/bigdecimal/bigdecimal.h
-	  (labs, llabs): support environments missing labs and llabs.
-
-	* ext/bigdecimal/bigdecimal.h (vabs): added.
-
-	* ext/bigdecimal/extconf.rb, ext/bigdecimal/bigdecimal.h,
-	  ext/bigdecimal/bigdecimal.c, test/bigdecimal/test_bigdecimal.rb
-	  (TestBigDecimal#test_new): replace U_LONG, S_LONG, S_INT, and U_INT
-	  with appropriate standard or ruby-provided types.
-
-Sun Aug 15 00:15:45 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_utime): Pathname#utime translated
-	  from pathname.rb.
-
-Sat Aug 14 21:04:28 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_gc_mark_threads): deprecated.
-
-Sat Aug 14 19:12:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/{coverage,objspace}/extconf.rb ($INCFLAGS): explicitly add
-	  topdir and top_srcdir.  [ruby-dev:42031]
-
-Sat Aug 14 17:48:41 2010  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* test/objspace/test_objspace.rb: added test for objspace.
-
-	* ext/objspace/objspace.c: considers T_ZOMBIE by lazy sweep GC.
-
-	* gc.c: considers that dsize was 0. [ruby-dev:42022]
-
-Sat Aug 14 15:33:02 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, include/ruby/defines.h (RUBY_FUNC_EXPORTED): macro
-	  to declare exported function.
-
-	* array.c (rb_ary_memsize), string.c (rb_str_memsize),
-	  variable.c (rb_objspace_data_type_memsize): used in
-	  objspace.  [ruby-dev:42022]
-
-	* io.c (rb_io_memsize): constified.
-
-	* regcomp.c (onig_memsize): constified.
-
-	* gc.h (rb_objspace_each_objects): used in objspace.
-
-	* vm_core.h (rb_{get,set,reset}_coverages): used in coverage.
-
-	* include/ruby/intern.h (rb_time_interval): used in io/wait.
-
-	* include/ruby/intern.h (rb_make_backtrace, rb_make_exception):
-	  used in ripper.
-
-	* node.h (rb_parser_{malloc,realloc,calloc,free}): ditto.
-
-Fri Aug 13 22:48:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_truncate): Pathname#truncate translated
-	  from pathname.rb.
-
-Fri Aug 13 16:11:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (MiniTest::Unit.new): extend before initialize.
-	  [ruby-dev:41970]
-
-	* lib/test/unit.rb (MiniTest::Unit.autorun): use Test::Unit::Mini.
-
-Thu Aug 12 23:39:02 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_make_symlink): Pathname#make_symlink
-	  translated from pathname.rb.
-
-Thu Aug 12 21:18:27 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_lstat): Pathname#lstat translated
-	  from pathname.rb.
-
-Thu Aug 12 05:58:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_char_to_option_kcode): used in
-	  ripper.
-
-	* node.h (rb_reserved_word): ditto.
-
-Thu Aug 12 00:19:53 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_rubyoptions.rb (test_script_from_stdin): disable
-	  echo.  [ruby-dev:41966]
-
-Wed Aug 11 23:28:22 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* lib/cmath.rb (CMath.sqrt): use floating-point value.
-	  [ruby-core:31672] [Bug #3678]
-
-	* test/test_cmath.rb: added for testing lib/cmath.rb.
-
-Wed Aug 11 20:57:25 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: merge from branches/ruby_1_9_2, and move io/console.
-	  [ruby-dev:41924]
-
-Wed Aug 11 11:01:15 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c: don't use // comment.
-
-Wed Aug 11 06:18:20 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_stat): Pathname#stat translated
-	  from pathname.rb.
-
-Tue Aug 10 21:18:04 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_to_[ifr]): don't allow complex with in-exact
-	  imaginary zero to be converted.
-
-Tue Aug 10 20:56:31 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/optparse.rb: suppress a warning.
-
-	* test/test_mutex_m.rb: ditto.
-
-Tue Aug 10 20:56:13 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (Date::Format::Bag): use Struct.
-	  as an experimental.
-
-Tue Aug 10 20:45:35 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_rename): Pathname#rename translated
-	  from pathname.rb.
-
-Tue Aug 10 20:16:19 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/win32/lib/win32/resolv.rb (get_info): get rid of a warning.
-
-Tue Aug 10 19:56:13 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: [ruby-core:31658]
-
-Tue Aug 10 17:24:56 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* README.EXT.ja: rb_tainted_str_new_cstr() is an alias of
-	  rb_tainted_str_new2().
-
-Tue Aug 10 15:24:30 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c, ext/bigdecimal/bigdecimal.h,
-	  ext/bigdecimal/extconf.rb: BASE and BASE_FIG are defined
-	  based on the size of BDIGIT.
-
-	* ext/bigdecimal/bigdecimal.c, ext/bigdecimal/bigdecimal.h:
-	  use BDIGIT for Real#frac.
-
-Tue Aug 10 15:19:45 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.h, ext/bigdecimal/bigdecimal.c:
-	  add extern declaration of rb_cBigDecimal.
-
-Tue Aug 10 14:09:31 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/webrick/httprequest.rb (WEBrick::HTTPRequest::parse_uri):
-	  rollup leading slashes. [ruby-core:31657]
-	  patched by Jamison Wilde
-	  NOTE: //authority/path is valid relative URI both RFC2396 and
-	  RFC3986. So when give a relative URI-like string to URI lib,
-	  users must care leading slashes.
-
-Tue Aug 10 11:26:33 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/un.rb (httpd): SIGQUIT and SIGHUP are not guaranteed to exist.
-
-Tue Aug 10 06:26:48 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_readlink): Pathname#readlink translated
-	  from pathname.rb.
-
-Mon Aug  9 22:15:19 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_open): Pathname#open translated from
-	  pathname.rb.
-
-Mon Aug  9 22:11:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_signal.rb (TestSignal#test_exit_action): use
-	  Process.spawn instead of Process.fork.
-
-Mon Aug  9 15:59:02 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rubygems/source_index.rb: rename unused variable.
-
-	* lib/rubygems/specification.rb: rename unused variable.
-
-	* lib/rubygems/specification.rb: remove unused variable.
-
-Mon Aug  9 14:10:06 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: Fix type of mimeout_state.buf.
-	  [nkf-bug:20079]
-
-Mon Aug  9 06:52:59 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (sys_warning_1): show error message.
-
-Mon Aug  9 06:50:28 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_require.rb (test_require_too_long_filename):
-	  clear -w option.
-
-Mon Aug  9 00:18:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb ($ignore_error): initialize after $nmake.
-
-Sun Aug  8 19:16:26 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_make_link): Pathname#make_link
-	  translated from pathname.rb.
-
-Sun Aug  8 16:42:48 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems.rb (Gem.find_files): reverted to use globbing.
-
-	* lib/rubygems.rb (Gem.find_files): fixed search order same as
-	  default behavior.
-
-	* gem_prelude.rb, lib/rubygems.rb (Gem.suffixes): return truly
-	  require-able suffixes only.
-
-Sun Aug  8 13:20:57 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_ftype): Pathname#ftype translated
-	  from pathname.rb.
-
-Sun Aug  8 12:41:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_tokadd_escape): no similar messages twice.
-	  [ruby-core:31048]
-
-Sun Aug  8 10:07:45 2010  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c (rb_strftime_with_timespec): suppress warnings.
-
-Sun Aug  8 08:58:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (RUBY_H_INCLUDES): add subst.h.
-
-Sun Aug  8 08:55:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (ruby_snprintf): printf attribute.
-
-Sun Aug  8 07:47:29 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/rbconfig/obsolete.rb: show the location which use Config.
-
-Sun Aug  8 07:29:55 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_fnmatch): Pathname#fnmatch and
-	  Pathname#fnmatch? translated from pathname.rb.
-
-Sun Aug  8 07:18:22 2010  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/subst.h (snprintf): redefinition moved from ruby.h.
-	  (vsnprintf): ditto.
-
-Sun Aug  8 00:41:42 2010  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/subst.h: new file for substitute standard functions.
-
-	* include/ruby/missing.h: don't substitute "close", etc. here.
-
-	* include/ruby/ruby.h: include ruby/subst.h at last.
-	  This prevents substituting "close" in unistd.h.
-
-Sat Aug  7 19:51:10 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (EnvUtil.invoke_ruby): merge stdout and stderr
-	  if capture_stderr is :merge_to_stdout.
-	  (assert_normal_exit): print abnormal output properly.
-
-Sat Aug  7 19:04:49 2010  Tanaka Akira  <akr@fsij.org>
-
-	* missing/close.c: undef the macros "getpeername", "getsockname" and
-	  "shutdown" to prevent infinite recursion.
-
-Sat Aug  7 18:37:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* missing/close.c: undef the macro "close" to prevent infinite
-	  recursion.
-
-Sat Aug  7 18:20:41 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_lchown): Pathname#lchown translated
-	  from pathname.rb.
-
-Sat Aug  7 17:49:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/missing.h: moved BROKEN_CLOSE replacements from
-	  include/ruby/ruby.h.
-
-Sat Aug  7 17:40:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb, lib/rbconfig/obsolete.rb: warn obsolete and
-	  deprecated Config.
-
-Sat Aug  7 17:18:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extract_makefile): follow the change of
-	  install-rb-default line format at r28850, which causes second
-	  run to create dummy makefiles.
-
-Sat Aug  7 14:08:44 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/mkmf.rb: change instance variable to global.
-
-Sat Aug  7 13:59:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pathname/pathname.c (path_sub_ext): don't clobber shared string.
-	  [ruby-core:31640]
-
-Sat Aug  7 13:33:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (vm_call0): fix for VM_METHOD_TYPE_NOTIMPLEMENTED.
-	  [ruby-dev:41953]
-
-Sat Aug  7 09:47:06 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: fix checking version of GCC.
-
-Sat Aug  7 09:31:48 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (Init_pathname): fix number of arguments for
-	  Pathname#chown.
-
-Sat Aug  7 09:28:12 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): use assert.  fix
-	  faildesc.
-
-	* test/pathname/test_pathname.rb (test_lchmod): test Pathname#lchmod
-	  using assert_normal_exit.
-
-Sat Aug  7 08:26:26 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_chown): Pathname#chown translated
-	  from pathname.rb.
-
-Sat Aug  7 02:09:04 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_lchmod): Pathname#lchmod translated
-	  from pathname.rb.
-
-Fri Aug  6 21:30:06 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_chmod): Pathname#chmod translated from
-	  pathname.rb.
-
-Fri Aug  6 20:13:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* rational.c (nurat_div): divided by infinity should be zero.
-
-	* rational.c (nurat_div): divided by float zero should be
-	  infinity.  [ruby-core:31626]
-
-Fri Aug  6 18:59:23 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (realpath_rec): rb_str_modify depends on the length, so
-	  resize instead.
-
-Fri Aug  6 18:56:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (clean-ext): fixed directories to be removed.
-
-Fri Aug  6 17:42:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/depend: add space at the beginning of @ignore_error.
-
-	* lib/mkmf.rb: ditto.
-
-Fri Aug  6 17:38:33 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (clean): add  prelude.c, config.log, and rbconfig.rb.
-
-	* common.mk (distclean): remove encdb.h, config.log, and rbconfig.rb.
-
-Fri Aug  6 17:35:24 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* Makefile.in: ignore error from RMDIRS.
-
-	* enc/depend: ditto.
-
-	* lib/mkmf.rb: ditto.
-
-Fri Aug  6 05:53:32 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_mtime): Pathname#mtime translated from
-	  pathname.rb.
-
-Thu Aug  5 22:09:30 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_ctime): Pathname#ctime translated from
-	  pathname.rb.
-
-Thu Aug  5 21:20:31 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (NODE_ARGSCAT, NODE_ARGSPUSH): drop unused ARGSCAT
-	  results when popped is true.  [ruby-dev:41933], [Bug #3658]
-	  This is retry of r28870 and r28873 which were reverted.
-
-Thu Aug  5 20:13:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja (String functions): mention
-	  rb_str_resize and rb_str_set_len.
-
-Thu Aug  5 19:59:55 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_set_len): bail out when buffer overflowed
-	  probably.
-
-Thu Aug  5 18:36:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c (nucomp_marshal_load): should check the argument.
-	  [ruby-core:31622]
-
-	* rational.c (nurat_marshal_load): ditto
-
-	* marshal.c (w_float): should not append a dot if no fractal part
-	  exists.  [ruby-dev:41936]
-
-Thu Aug  5 17:11:43 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (void_expr_gen): add 'possibly' to warning message.
-	  [ruby-core:31611]
-
-Thu Aug  5 16:57:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (glob_make_pattern): fold continuous PLAINs to get rid of
-	  snail at too deep path.  [ruby-dev:41871]
-
-Thu Aug  5 16:42:41 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_set_len): should fail to modify shared string.
-
-Thu Aug  5 14:12:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): ensure sopath to be modifiable
-
-Thu Aug  5 12:39:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_make_independent_expand): fix buffer overflow
-	  while shrinking.
-
-Thu Aug  5 06:42:31 2010  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (realpath_rec): call rb_str_modify before rb_str_set_len.
-
-Wed Aug  4 19:37:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_set_len): rb_str_modify cannot work before the
-	  length is set, which is a precondition for rb_str_modify.
-
-Wed Aug  4 15:47:21 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): no need to create the directory
-	  at each library file. this change makes making ext faster.
-
-Wed Aug  4 06:25:04 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_atime): Pathname#atime translated from
-	  pathname.rb.
-
-Tue Aug  3 21:16:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (Init_Random): add Random::DEFAULT.
-
-Tue Aug  3 21:01:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_check_hash_type): added.
-
-Tue Aug  3 20:30:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_eq): never equal to infinity.
-	  [ruby-core:31603]
-
-	* rational.c (nurat_div): hack for integral float divisor.
-
-Tue Aug  3 14:42:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/extmk.rb: remove purelib, fixes a bug in r28440, r28441.
-
-	* spec/default.mspec: ditto.
-
-	* template/Doxyfile.tmpl: ditto.
-
-Tue Aug  3 14:19:42 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/driver.rb (setup_pager): no need to check the existence
-	  of pagers. the following code checks whether they are executable or
-	  not.
-
-Tue Aug  3 12:03:57 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* tool/runruby.rb: no purelib.
-
-Tue Aug  3 07:52:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/purelib.rb: no longer used since the default load path of
-	  miniruby is empty.
-
-Tue Aug  3 00:53:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def, vm_core.h: fixed typo.  reported by Rocky Bernstein
-	  <rockyb AT rubyforge.org> at [ruby-core:31596].
-
-Mon Aug  2 21:51:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): rb_str_set_len modifies ptr
-	  since r26303.
-
-Mon Aug  2 21:16:03 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: NONAMELESSUNION defined only if gcc
-	  version is older than 3.4.4. [ruby-core:31567] [Bug #3637]
-	* ext/win32ole/extconf.rb: ditto.
-
-Mon Aug  2 16:34:32 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (native_thread_join): need to wait thread, of course.
-	  [ruby-dev:41911]
-
-Mon Aug  2 12:22:22 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (file_expand_path): wrong condition. [ruby-core:31591]
-
-Mon Aug  2 05:34:48 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_realdirpath): Pathname#realdirpath
-	  translated from pathname.rb.
-
-Sun Aug  1 23:04:49 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb: describe superclasses explicitly.
-
-Sun Aug  1 23:04:35 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_modify_expand, rb_str_resize): get rid of
-	  repeating malloc and realloc.
-
-Sun Aug  1 22:16:30 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_hash): use rb_memhash and
-	  take care of negative finite numbers properly.
-	  [ruby-core:31582][Bug #3640]
-
-Sun Aug  1 20:57:22 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_realpath): Pathname#realpath translated
-	  from pathname.rb.
-
-Sun Aug  1 17:27:32 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub: needs stddef.h for size_t.  a patch from
-	  Akio Tajima at [ruby-dev:41905].
-
-Sun Aug  1 14:59:04 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_sub_ext): Pathname#sub_ext translated
-	  from pathname.rb.
-
-Sun Aug  1 10:23:48 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/irb/init.rb (IRB.parse_opts): set VERBOSE to true when debug
-	  switch called in irb.  a patch from Andrew Grimm in
-	  [ruby-core:31558].
-
-Sun Aug  1 09:35:35 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (big_op): comparison of bignum and infinity has returned 1
-	  or -1, but it must return boolean.
-
-Sun Aug  1 09:44:25 2010  Tanaka Akira  <akr@fsij.org>
-
-	* class.c (rb_include_module): don't clear the method cache if the
-	  included module has no method.
-	  reported by Eric Wong.  [ruby-core:31559]
-
-Sun Aug  1 09:21:32 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_sub): Pathname#sub translated
-	  from pathname.rb.
-
-Sun Aug  1 09:12:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h: latest x86_64 mingw defines stati64.
-	  [ruby-core:27516]
-
-Sun Aug  1 08:51:52 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: fix typo. [ruby-core:31564][Bug #3636]
-
-Sat Jul 31 23:15:27 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_inspect): Pathname#inspect translated
-	  from pathname.rb.
-
-Sat Jul 31 15:50:03 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (Init_pathname): The alias,
-	  Pathname#to_path, is translated from pathname.rb.
-
-Sat Jul 31 09:12:36 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_to_s): Pathname#to_s translated
-	  from pathname.rb.
-
-Sat Jul 31 08:20:07 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/webrick/ssl.rb (WEBrick::Utils.create_self_signed_cert):
-	  merged r28784 from ruby_1_8: wrongly created dummy SSL certificate
-	  with version == 3 (no such version) and serial == 0 (must be >0).
-
-Fri Jul 30 21:43:55 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_hash): Pathname#hash translated
-	  from pathname.rb.
-
-Fri Jul 30 12:42:02 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/net/imap.rb (example): use IO#noecho to read password if
-	  possible, and defer until needed.  [ruby-dev:41889]
-
-	* lib/net/imap.rb (example): support starttls option.
-	  [ruby-dev:41888]
-
-Fri Jul 30 08:51:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): home directory must be absolute.
-	  [ruby-core:31537]
-
-Fri Jul 30 08:33:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): should check if could find user.
-	  [ruby-core:31538]
-
-Fri Jul 30 07:59:53 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_add_suffix): fixed a bug returning uninitialized
-	  value.
-
-Fri Jul 30 07:48:04 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: use TK_XINCLUDES on tkConfig.sh when not empty,
-	  even if MacOS X Aqua version [ruby-dev:41883].
-
-Thu Jul 29 22:28:35 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_cmp): Pathname#<=> translated
-	  from pathname.rb.
-
-Thu Jul 29 06:51:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (EXT_SRCS): add ext/json/parser/parser.c.
-
-Thu Jul 29 05:52:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_basename): pass baselen to rmext.
-
-Thu Jul 29 02:38:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: not [freebsd] but [freebsd*] for AS_CASE.
-
-Wed Jul 28 22:23:59 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_eq): Pathname#{==,===,eql?} translated
-	  from pathname.rb.
-
-Wed Jul 28 19:37:33 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): VC6 or later have stddef.h.
-
-	* include/ruby/missing.h: need to include stddef.h for size_t.
-
-	* include/ruby/missing.h: shouldn't declare as dllimport when building
-	  ruby itself (for Windows).
-
-Wed Jul 28 17:11:48 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/*.c: include missing.h
-
-Wed Jul 28 09:38:03 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* cont.c: typos.
-
-Wed Jul 28 09:24:43 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* cont.c: (RB_PAGE_SIZE): renamed from PAGE_SIZE. [ruby-dev:41870]
-
-	* cont.c: (RB_PAGE_MASK): renamed from PAGE_MASK.
-
-Tue Jul 27 23:09:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_taint): use rb_obj_taint.
-	  (path_untaint): Pathname#untaint translated from
-	  pathname.rb.
-
-Tue Jul 27 18:59:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (have_framework): added.
-
-Tue Jul 27 18:33:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* defines.h, intern.h, missing.h, ruby.h, st.h, util.h: include
-	  config.h and defines.h for autoconf macros.
-
-Tue Jul 27 16:27:38 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (flo_cmp): typo.
-
-Tue Jul 27 16:09:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* class.c, compile.c, dir.c, file.c, iseq.c, parse.y, random.c:
-	  clean unused-value warnings.
-
-	* cont.c, process.c, vm_exec.h: clean cast warnings.
-
-Mon Jul 26 22:34:37 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_taint): Pathname#taint translated from
-	  pathname.rb.
-
-Mon Jul 26 18:18:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (config.h): add include guard.
-
-	* win32/Makefile.sub, bcc32/Makefile.sub (config.h): ditto.
-
-Mon Jul 26 14:38:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (XCFLAGS): missing.h needs config.h.
-
-Mon Jul 26 14:08:47 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/missing.h: revert a part of r28727.  config.h is expected
-	  to include only once, before including defines.h.
-	  including it here breaks some macro definitions.
-
-Mon Jul 26 13:52:25 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: define BROKEN_CLOSE only on FreeBSD.
-	  This needs to merge to 1.9.2.
-
-Mon Jul 26 13:01:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (rb_thread_mark): should mark iseq itself other than normal
-	  iseq.  [ruby-dev:41880]
-
-Mon Jul 26 11:51:01 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: define BROKEN_CLOSE on FreeBSD.
-	  This fixes build failure on MSVC. [ruby-core:31481]
-
-	* include/ruby/ruby.h, include/ruby/missing.h:
-	  use BROKEN_CLOSE for replacing close(2).
-
-Mon Jul 26 09:51:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (rb_thread_mark): mark only self of normal iseqs, not
-	  nodes.  [ruby-dev:41874]
-
-Sun Jul 25 05:37:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_cmp): honor the result of infinite? method of the
-	  other.  [ruby-core:31470]
-
-	* test/ruby/envutil.rb (EnvUtil#.suppress_warning): added.
-
-	* test/ruby/test_float.rb (TestFloat#test_Float): suppress
-	  warnings under --verbose.
-
-Fri Jul 23 16:07:32 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/mutex_m.rb (sleep): added Mutex_m#sleep to support
-	  ConditionVariable.
-
-Fri Jul 23 15:09:22 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_MINGW32): ignore msvc suffix.
-
-	* configure.in (RUBY_TRY_CFLAGS): try with werror turned on.
-
-Fri Jul 23 09:02:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_expr_str): fixed out-of-boundary access at invalid
-	  multibyte characters.
-
-Fri Jul 23 09:00:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (XCFLAGS): reverted mistakenly removed option.
-	  [ruby-dev:41872]
-
-	* include/ruby/missing.h: needs ruby/config.h.
-
-Thu Jul 22 20:58:55 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_EXTERN): unnecessary after all.
-
-Thu Jul 22 17:33:47 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* complex.c (nucomp_to_i): allow complex with imaginary zero to be
-	  converted.
-
-	* complex.c (nucomp_to_f, nucomp_to_r): ditto.
-
-Thu Jul 22 20:12:56 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread_pthread.c (get_stack): fix memory leak; pthread_attr_destroy
-	  must be called even when pthread_getattr_np is used.
-	  [ruby-core:31269]
-
-Thu Jul 22 16:27:41 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_expr_str): fix broken Regexp#inspect when it
-	  is ASCII-8BIT and non-ASCII character.
-	  The length of character should be from original byte string.
-	  [ruby-core:31431]
-
-Thu Jul 22 14:30:17 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/missing.h: add prototype for ruby_close().
-
-Thu Jul 22 12:58:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_EXTERN): ignore invalid attribute.
-
-	* configure.in: fix for older autoconf.
-
-Thu Jul 22 12:02:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/{intern,io}.h: add missing prototypes.
-
-Thu Jul 22 06:38:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (XCFLAGS): use -fvisibility=hidden if possible.
-
-	* configure.in (RMDIR): use --ignore-fail-on-non-empty if possible.
-
-	* configure.in (RUBY_EXTERN): FUNCTION-BODY was missing.
-
-Thu Jul 22 03:02:55 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* README.EXT: fix signature of rb_ensure and rb_rescue to match
-	  implementation.
-
-Wed Jul 21 23:07:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/fake.rb.in: get rid of embedding an absolute path.
-
-Wed Jul 21 15:22:17 2010  Evan Phoenix <evan@fallingsnow.net>
-
-	* lib/rubygems/custom_require.rb, gem_prelude.rb: Load code from
-	  from gems properly.
-
-Wed Jul 21 15:15:02 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* sprintf.c: add short documentation about named reference.
-	  [ruby-core:31294]
-
-Wed Jul 21 15:00:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (local_push_gen): disable unused variable warnings in
-	  eval.  [ruby-dev:41869]
-
-Wed Jul 21 13:57:37 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm_method.c (rb_method_boundp): revert r28543, r28564.
-	  They may be merged in Ruby 2.0. [ruby-core:31217]
-
-Wed Jul 21 13:37:35 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/uri/common.rb: Have URI#route_to, URI#route_from accept
-	  string-like arguments [ruby-core:30961]
-
-	* lib/uri/generic.rb: ditto for URI.join, URI#merge
-
-Wed Jul 21 12:39:15 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/cmath.rb (CMath#cbrt): cbrt should accept a negative real
-	  numbers.  [ruby-core:31234]
-
-Wed Jul 21 12:31:30 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/uri/common.rb: Have URI() and URI.join accept URI objects in
-	  addition to strings. [ruby-core:30960]
-
-Wed Jul 21 11:55:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_hdtoa): renamed from BSD__hdtoa.
-
-Tue Jul 20 11:35:11 2010  Evan Phoenix  <evan@ruby-lang.org>
-
-	* lib/rubygems.rb: Load the custom require if --disable-rubygems
-	  was used.
-
-Tue Jul 20 11:27:18 2010  Evan Phoenix  <evan@ruby-lang.org>
-
-	* gem_prelude.rb: Pull in rubygem's custom require
-
-	* lib/rubygems.rb: Handle always having custom require available
-
-Tue Jul 20 18:39:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (RSTRING_GETMEM): new macro to get ptr and
-	  len at once.
-
-	* string.c (rb_str_cmp, str_eql, rb_str_eql): trivial improvements.
-
-Tue Jul 20 18:23:04 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/fiddle/closure.c (closure_data_type),
-	  ext/fiddle/function.c (function_data_type): rb_data_type_t has
-	  changed.
-
-Tue Jul 20 14:21:38 2010  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c: don't call after_gc_sweep() after when garbage_collect()
-	  was called, because rb_sweep_method_entry() free live unlinked
-	  method entries. [ruby-core:31169]
-
-Tue Jul 20 12:42:06 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* ext/socket/raddrinfo.c (rb_getaddrinfo): according to my
-	  valgrind output this variable should be initialized beforehand.
-
-Tue Jul 20 12:50:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_flush_buffer): write and buffer operations should be
-	  monolithic.  [ruby-core:31348]
-
-Tue Jul 20 12:27:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::Entry_#copy): check file name
-	  separator boundary.  [ruby-core:31360]
-
-Mon Jul 19 18:34:12 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (get_strpath): check the type.
-	  (path_initialize): bypass to_path call for T_STRING.
-	  (path_freeze): implemented.
-
-	* ext/pathname/lib/pathname.rb (Pathname#freeze): removed.
-
-Mon Jul 19 12:33:29 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_clear): should not unshare embedded array, and
-	  should make unshared array embedded.
-
-Mon Jul 19 09:00:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* NEWS (Kernel#instance_eval): add an incompatible change since
-	  the 1.9.1 release.  [ruby-core:31336]
-
-Mon Jul 19 05:46:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_data_type_t): add new feature macros.
-
-Sun Jul 18 21:20:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_clear): no need to duplicate buffer just before
-	  clearing.
-
-Sun Jul 18 16:31:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_data_type_t): restructured.  [ruby-dev:41862]
-	  add parent member.
-
-	* error.c (rb_typeddata_inherited_p): new function.
-
-Sun Jul 18 01:09:27 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/pathname.c (path_initialize): return a value.
-
-Sun Jul 18 00:02:19 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/lib/pathname.rb (Pathname#initialize): removed.
-
-	* ext/pathname/pathname.c (path_initialize): implemented.
-	  (get_strpath): new function.
-	  (set_strpath): ditto.
-
-Sat Jul 17 19:01:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (MiniTest::Unit#process_args): refactored.
-
-Sat Jul 17 18:30:05 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/file2lastrev.rb: don't depend on pathname.rb if File.realpath
-	  is available.
-
-Sat Jul 17 14:10:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_add_suffix): fixed type warnings.
-
-Sat Jul 17 13:48:22 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/lib/pathname.rb: moved from lib/pathname.rb.
-	  require pathname.so.
-
-	* ext/pathname/pathname.c: new file to define empty Pathname class.
-
-	* ext/pathname/extconf.rb: new file.
-
-Sat Jul 17 13:04:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_wakeup_alive): split from rb_thread_wakeup.
-	  merged from r13476.  c.f. [ruby-core:31320]
-
-Sat Jul 17 10:07:52 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb: MiniTest::Unit is different class from
-	  Test::Unit, and install runner before loading test/minitest.
-
-Fri Jul 16 14:58:38 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit.setup_argv): run tests only when
-	  any tests have not run.
-
-	* bin/testrb, test/runner.rb: use Test::Unit.start.
-
-Fri Jul 16 12:06:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/rbinstall.rb (ext-arch): prune directories start with '-'.
-
-Thu Jul 15 21:43:35 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* numeric.c (fix_divide): must not use rb_rational_new1 for coercion
-	  because it returns an argument itself when canonical mode is set.
-	  [ruby-core:31279]
-
-Thu Jul 15 21:38:31 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (bm_free): fix memory leak.  [ruby-core:30869] [Bug #3466]
-
-Thu Jul 15 15:47:32 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regexec.c (onig_search): don't skip non-ANYCHARs when
-	  .* fails to match. This causes to fail matching
-	  ANYCHAR_STAR with LOOK_BEHIND. This fix is workaround
-	  and disable the optimization. [ruby-dev:41851]
-
-Thu Jul 15 06:11:29 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/rdoc/markup/attribute_manager.rb: fixing ri output when special
-	  characters are inside html tags.  Thanks Tomo Kazahaya! [Bug #3512]
-
-Thu Jul 15 06:01:42 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (guess_local_offset): use the UTC offset of an older date on
-	  64bit time_t environment.
-
-Thu Jul 15 02:42:51 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/test/unit.rb (setup_argv): convert to using optparse, adding
-	  --help and -I. [ruby-core:30154]
-
-Thu Jul 15 00:35:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (localtime_with_gmtoff_zone): renamed from
-	  localtime_with_gmtoff and return the timezone abbreviation name.
-	  (guess_local_offset): return the isdst and timezone abbreviation name.
-	  (localtimew): use the returned isdst and timezone abbreviation name.
-	  [ruby-core:31275]
-
-Wed Jul 14 20:23:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (frame_func_id), vm_eval.c (rb_iterate),
-	  vm_insnhelper.c (vm_yield_with_cfunc): as the name of a C-level
-	  block, use the current method ID at the creation point.
-	  [ruby-dev:41852]
-
-Wed Jul 14 18:18:05 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regexec.c (match_at): add end point to enclen's argument.
-	  This only effect on compiling with -DONIG_DEBUG_MATCH.
-
-Tue Jul 13 21:34:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/readline.c: libedit is missing declaration of
-	  rl_getc.
-
-Tue Jul 13 21:31:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_daemon): split from proc_daemon.
-
-	* process.c (rb_fork_err): suppress gcc 4.4 warnings.
-
-	* random.c (fill_random_seed): ditto.
-
-Tue Jul 13 21:01:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pty/pty.c (establishShell): chfunc must not raise any
-	  exceptions.
-
-Tue Jul 13 20:58:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_DEFAULT_ARCH): adjust for target
-	  cpu. [ruby-core:31243]
-
-Tue Jul 13 20:46:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/handle.c (rb_dlhandle_close): should not pass a dynamic
-	          string to rb_raise directly.
-
-Tue Jul 13 12:04:57 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* missing/close.c: keep original errno.
-
-Mon Jul 12 01:58:56 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/csv.rb: Fix unused variable warnings.
-	  Patch by Run Paint [ruby-core:30991]
-
-	* lib/date.rb: ditto
-
-	* lib/debug.rb: ditto
-
-	* lib/drb/drb.rb: ditto
-
-	* lib/drb/invokemethod.rb: ditto
-
-	* lib/irb/ruby-lex.rb: ditto
-
-	* lib/irb/slex.rb: ditto
-
-	* lib/logger.rb: ditto
-
-	* lib/pathname.rb: ditto
-
-Sun Jul 11 21:20:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT{,.ja} (rb_block_call): fixed about third/fourth
-	  arguments to the block.  based on [ruby-core:31192] by Asher
-	  Haig.  [Bug #3558]
-
-Sun Jul 11 17:01:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in ({,dist-,real-}clean-ext): should also omit
-	  semicolon when omitting "in WORDS" of FOR-statement.
-
-	* tool/rmdirs: ditto.
-
-Sun Jul 11 11:07:42 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rdoc/test_rdoc_ri_driver.rb (test_formatter): add a test.  a
-	  patch from caleb clausen in [ruby-core:31182].
-
-Sat Jul 10 21:43:11 2010  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c (rb_strftime_with_timespec): fix precision handling for
-	  %:z and %::z.
-
-Fri Jul  9 22:32:54 2010  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c: unused declarations removed.
-
-Fri Jul  9 21:20:22 2010  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c (rb_strftime_with_timespec): clear colons at unknown
-	  directive.
-
-Fri Jul  9 21:04:10 2010  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c: don't call tzset.  strftime.c doesn't depend on
-	  the global timezone.
-
-Fri Jul  9 20:30:26 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (find_time_t): 24:00 should be the beginning of the next
-	  day even if the leap second, 23:59:60, exists.
-
-Fri Jul  9 01:08:46 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/emitter.rb (initialize): line_width is
-	  a valid option passed to the emitter.
-
-	* test/psych/test_psych.rb: corresponding tests.
-
-Fri Jul  9 00:49:46 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/emitter.c (line_width, set_line_width): preferred line may
-	  be set on the emitter.
-
-	* test/psych/test_emitter.rb: corresponding tests.
-
-Thu Jul  8 15:47:34 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_conv_enc_opts): fix infinite loop because
-	  of ISO-2022-JP conversion with empty string.
-	  patched by Brian Buchanan [ruby-core:31107]
-
-Thu Jul  8 08:16:57 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb (push): adding version
-	  and header emit options.
-
-	* test/psych/test_psych.rb: corresponding test.
-
-Thu Jul  8 08:01:03 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/emitter.c: updating documentation about emit options
-
-	* ext/psych/lib/psych/core_ext.rb: ditto
-
-	* ext/psych/lib/psych.rb (dump): passing emit options to emitter.
-
-	* ext/psych/lib/psych/nodes/node.rb: ditto
-
-	* ext/psych/lib/psych/visitors/emitter.rb: sending emit options to
-	  YAML emitter. [ruby-core:28318]
-
-Thu Jul  8 06:05:58 2010  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c (rb_strftime_with_timespec): support %:z and %::z.
-	  [ruby-dev:41841]
-
-Thu Jul  8 00:15:50 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gem_prelude.rb: provide workaround for gem activation.  Currently,
-	  gem activation does not work by default.  Now it can be worked
-	  around by requiring "rubygems" first.  [ruby-core:29486]
-	  a patch from Evan Phoenix in [ruby-core:31096].
-
-	* lib/rubygems.rb: ditto.
-
-Wed Jul  7 10:01:34 2010  Adrian Bloomer  <adrian.bloomer@gmail.com>
-
-	* numeric.c (fix_rev): Replaced fix_rev with '~num | FIXNUM_FLAG'.
-
-Wed Jul  7 13:22:20 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (ruby_find_basename): set correct baselen.
-
-Wed Jul  7 13:02:59 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* vm_method.c (rb_method_boundp): respond_to?(:protected_method,
-	  true) should return true.  Pointed out by Marc-Andre Lafortune.
-	  [ruby-dev:41837]
-
-Wed Jul  7 12:00:24 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (ruby_find_basename): should initialize f.
-
-Wed Jul  7 11:44:01 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzfile_raise): add invalid header to
-	  exceptions.
-
-Wed Jul  7 10:26:20 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* missing/close.c: ignore ECONNRESET.
-	  FreeBSD wrongly sets ECONNRESET on close(2) and
-	  it causes false-negative exceptions. [ruby-dev:41778]
-
-	* configure.in: ditto.
-Tue Jul  6 22:57:21 2010  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (nogvl_copy_stream_sendfile): jump to retry_sendfile directly
-	  to avoid select() on a socket which TCP state is CLOSED.
-	  patch by Eric Wong.  [ruby-core:31053]
-
-Tue Jul  6 21:45:34 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io/console/console.c (winsize_row): should return actual screen
-	  size, not buffer size.
-
-Tue Jul  6 08:35:58 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/dl/lib/dl/import.rb (handler): add a more helpful error message
-	  when calling import_symbol or import_function without calling
-	  dlload.  Thanks nobu! [ruby-core:30996]
-
-Tue Jul  6 00:34:50 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (thread_free): free altstack to prevent memory leak.  a patch
-	  from Tomoyuki Chikanaga in [ruby-dev:41815]. [Bug #3537]
-
-Tue Jul  6 00:29:27 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (NONASCII_MASK): NONASCII_MASK must be unsigned.
-	  [ruby-dev:41782]
-
-Mon Jul  5 16:05:39 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* vm_method.c (rb_method_boundp): Return false for protected
-	  methods when called from Kernel#respond_to?. [ruby-dev:40461]
-
-Mon Jul  5 12:32:01 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/scalar_scanner.rb (parse_string): support
-	  timezones that are not one hour off. [ruby-core:31023]
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: ditto
-
-Sun Jul  4 22:49:54 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_syntax.rb: split test_syntax from test_system.rb.
-
-Sun Jul  4 22:02:02 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_system.rb (test_syntax): unified with test_syntax2.
-
-Sun Jul  4 21:00:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_system.rb (test_syntax2): moved from sample/test.rb
-	  [ruby-dev:41721]
-
-Sun Jul  4 17:13:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (swallow, prepare_getline_args, rb_io_getline_1): fix for
-	  paragraph mode reading in non-ascii-compatible encoding.
-	  [ruby-dev:41803]
-
-Sat Jul  3 16:14:10 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (Init_bigdecimal): add two new constants
-	  BigDecimal::INFINITY and BigDecimal::NAN.
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb (BigMath.exp): modify the
-	  behaviors for infinity arguments as same as Math.exp.
-
-Sat Jul  3 09:47:26 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb(visit_Psych_Nodes_Scalar):
-	  teaching Psych to deserialize DateTime objects. [Bug #1390]
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb(visit_DateTime): added a
-	  method for serializing DateTime objects.
-
-	* ext/psych/lib/psych/scalar_scanner.rb(parse_time): add method for
-	  parsing times objects from a string.
-
-	* test/psych/test_date_time.rb: tests for dumping DateTime objects.
-
-Sat Jul  3 09:13:55 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb (visit_Time): use
-	  Time#nsec to accurately serialize time objects. [ruby-core:29233]
-
-Fri Jul  2 23:30:23 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (argf_inplace_mode_set): prohibits an assignment of a tainted
-	  value.
-
-	* file.c (ruby_find_basename, ruby_find_extname): split from
-	  rb_file_s_basename() and rb_file_s_extname().
-
-	* util.c (ruby_add_suffix): support arbitrary length of the suffix
-	  to get rid of the potential buffer overflow.
-	  reported by tarui.
-
-Fri Jul  2 05:31:51 2010  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c (rb_num2long): accept LONG_MAX < x < LONG_MAX+1 and
-	  LONG_MIN-1 < x < LONG_MIN as well because they are converted
-	  into the valid range of long by truncation.
-	  (rb_num2ulong): accept ULONG_MAX < x < ULONG_MAX+1 and
-	  LONG_MIN-1 < x < LONG_MIN as well.
-	  (rb_num2ll): accept LLONG_MAX < x < LLONG_MAX+1 and
-	  LLONG_MIN-1 < x < LLONG_MIN.
-
-Thu Jul  1 23:10:25 2010  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: Improving documentation.
-
-Thu Jul  1 22:15:01 2010  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c (rb_num2ulong): fix the lower limit for float.
-	  [ruby-dev:41361]
-
-Thu Jul  1 21:37:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/envutil.rb (EnvUtil#invoke_ruby): integrated with
-	  runexec.
-
-Thu Jul  1 16:19:53 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* thread_pthread.c (thread_start_func_1): don't call
-	  native_thread_init_stack(th) on cygwin to avoid the segv
-	  introduced by r27789. Cygwin's signal implementation is half
-	  baked so USE_SIGNALSTACK is not defined and it needs another
-	  treatment.
-
-Thu Jul  1 13:00:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (test-knownbug): ignore known bugs.
-
-Thu Jul  1 08:40:26 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_object): suppress empty instance variable entry on
-	  compatible dump objects.
-
-Wed Jun 30 07:29:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_rubyoptions.rb (test_script_from_stdin): by using
-	  a pipe, get rid of not-well-defined behavior after the child
-	  process terminated in pty.
-
-Wed Jun 30 02:30:26 2010  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* thread_pthread.c (get_stack): use pthread_getthrds_np() for AIX.
-
-	* configure.in: ditto.
-
-Tue Jun 29 21:11:15 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* ext/stringio/stringio.c (strio_write): add RB_GC_GUARD.
-
-Tue Jun 29 19:39:59 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_method.rb (is_ruby64): check
-	  ruby binary is mswin64 or mingw64. [ruby-dev:41756]
-
-Tue Jun 29 14:18:21 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (rb_realpath_internal, realpath_rec): skip UNC share root
-	  on DOSISH platforms.
-	  http://pc12.2ch.net/test/read.cgi/tech/1272248179/600
-
-Tue Jun 29 11:52:33 2010  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (unlink_heap_slot, slot_sweep): unlink heaps_slot of
-	  heaps_slot linked list if heaps_slot is empty at slot_sweep.
-	  fixed [ruby-dev:41543], [ruby-core:24894].
-
-Tue Jun 29 01:22:08 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/fiddle/fiddle.h: added FFI type detection to avoid bug in ffi
-	  header files. Thanks Yugui! [ruby-core:30917]
-
-Mon Jun 28 22:14:22 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rdoc/test_rdoc_ri_driver.rb (TestRDocRIDriver#test_formatter):
-	  fix a test accordingly to r28455.
-
-Mon Jun 28 21:56:14 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_fd_resize, rb_fd_copy): avoid NULL dereference upon
-	  failed realloc by using xrealloc instead of not realloc.  a patch
-	  from Jim Meyering <meyering at redhat.com> in [ruby-core:30920]
-	  [Bug #3489]
-
-Mon Jun 28 20:32:33 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_method.rb (test_offset_vtbl): check
-	  that Ruby is 32bit or 64bit binary in order to get correct offset
-	  value. [ruby-dev:41741]
-
-Mon Jun 28 05:32:51 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rdoc/ri/driver.rb (RDoc::RI::Driver#formatter): should use bs
-	  format when stdout is piped.  [ruby-core:30734]
-
-Mon Jun 28 03:12:03 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bootstraptest/test_class.rb: add a test for [ruby-core:30843].
-
-Mon Jun 28 02:43:35 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* class.c (rb_mod_init_copy): when class is dup'ed, a metaclass of the
-	  class should be attached to the dup'ed class, not the original
-	  class.  [ruby-core:30843] [Bug #3461]
-
-Sun Jun 27 23:31:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/io.h, io.c: reverted r21709.
-
-	* ruby.c (load_file_internal): nothing to read if EOF reached
-	  while reading shebang.  [ruby-core:30910]
-
-Sun Jun 27 13:25:07 2010  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (simple_sendfile): don't try to send data more than SSIZE_MAX
-	  with single sendfile call..
-	  based on the patch by Eric Wong.  [ruby-core:30908]
-
-Sun Jun 27 10:41:38 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems/require_paths_builder.rb (write_require_paths_file_if_needed):
-	  no reason that bin directory should be included in $LOAD_PATH.
-	  it is for executable files, but not libraries.  [ruby-core:25936]
-
-Sat Jun 26 13:07:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (enable-debug-env): option for RUBY_DEBUG env.
-
-Sat Jun 26 11:56:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (clear-installed-list): put redirection before set
-	  command, since it seems to be handled by nmake in special way.
-	  [ruby-dev:41711]
-
-Sat Jun 26 10:08:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/envutil.rb (EnvUtil#invoke_ruby): no needs to copy the
-	  original ENV, since it's done in spawn automatically.
-	  [ruby-dev:41733]
-
-Sat Jun 26 08:44:22 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* NEWS (zlib): new methods.  [ruby-dev:41706] [Bug #3472]
-
-Sat Jun 26 07:59:18 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_method.rb (test_offset_vtbl): check
-	  that OS is Windows 32bit or Windows 64bit in order to get
-	  correct offset value.
-
-Sat Jun 26 04:39:12 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* ext/dl/lib/dl/func.rb (call): don't overwrite original arguments
-	  to defend from GC.
-	* test/dl/test_func.rb (test_string): add test for above.
-
-Fri Jun 25 11:45:36 2010  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: Fixing a bug that prevented CSV from parsing
-	  all multi-line fields correctly.  Patch by Rob Biedenharn.
-
-Fri Jun 25 10:07:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/envutil.rb (Test::Unit::Assertions#assert_in_out_err):
-	  return the exit status.
-
-	* test/ruby/envutil.rb (EnvUtil#invoke_ruby): change the
-	  environment of spawned process only.
-
-	* test/ruby/envutil.rb (EnvUtil#invoke_ruby): get rid of possible
-	  deadlock.
-
-Fri Jun 25 06:24:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/un.rb (httpd): MaxClients also should be integer.
-	  [ruby-dev:41724] [Bug #3477]
-
-	* lib/un.rb (setup): fix of word splitting.  [ruby-dev:41723]
-	  [Bug #3476]
-
-Fri Jun 25 01:07:17 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* include/ruby/ruby.h (static inline rb_gc_guarded_ptr): prevent
-	  RB_GC_GUARD_PTR being removed by optimization.
-
-Thu Jun 24 06:22:27 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (ruby_getaddrinfo__darwin): the workaround
-	  for Mac OS X moved from rsock_getaddrinfo.
-
-Thu Jun 24 05:44:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (struct dump_arg, struct load_arg): merge taint and
-	  untrust flags into infection as bit flags.
-
-	* marshal.c (w_nbyte, clear_dump_arg): infect the buffer as soon
-	  as appending, because it might have been finalized already at
-	  exit.  based on a patch by Tomoyuki Chikanaga
-	  at [ruby-dev:41672].  [Bug #3463]
-
-Wed Jun 23 23:49:21 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (str_is_number): renamed from str_isnumber to
-	  avoid confusion to str_isnumber in ext/socket/getaddrinfo.c.
-
-Wed Jun 23 23:45:31 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* NEWS (stringio): new methods.  [ruby-dev:41687] [Bug #3469]
-
-Wed Jun 23 22:52:00 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c: don't use __P.
-
-Wed Jun 23 21:32:08 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (reg_get_typelib_file_path): try win64
-	  registry entry at first. [ruby-dev:41674] [Bug #3464]
-
-Wed Jun 23 21:17:32 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (ruby_getaddrinfo__darwin): new workaround for
-	  getaddrinfo problem on Mac OS X Snow Leopard.  [ruby-core:29427]
-	  patch by Wataru Kimura.  [ruby-core:30842]
-
-Wed Jun 23 17:12:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* NEWS (ptr): new method and deprecated methods.  [ruby-dev:41681]
-
-	* ext/pty/{README,README.ja}: ditto.
-
-	* ext/pty/pty.c (pty_check): add rdoc.
-
-Wed Jun 23 12:44:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_regexp.rb (test_dup_warn): read in UTF-8
-	  encoding regardless environment.
-
-	* test/ruby/envutil.rb (invoke_ruby): add encoding option.
-
-Wed Jun 23 06:44:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (fchown): need to check.  a patch by Eric Wong
-	  at [ruby-core:30818].
-
-	* io.c (argf_next_argv): check for setting owner/group.
-
-Tue Jun 22 23:10:10 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (num_exact): fix for mathn.  [ruby-dev:41599]
-
-Tue Jun 22 22:00:06 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb: suppress warnings.
-
-Tue Jun 22 21:33:23 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/optparse/test_summary.rb: fixed superclass so that it run
-	  solely.
-
-Tue Jun 22 19:57:33 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (shadowing_lvar_gen): should add lvar to vars and
-	  used.  [ruby-dev:41666]
-
-Tue Jun 22 13:23:13 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/delegate.rb: Forward #trust, #untrust, #taint and #untaint
-	  to both the delegator and __getobj__ [ruby-core:26138]
-
-Mon Jun 21 23:41:08 2010  wanabe  <s.wanabe@gmail.com>
-
-	* eval_error.c (error_print): clear raised_flag while error-printing
-	  to avoid hang. [ruby-core:27608]
-
-	* test/ruby/test_beginendblock.rb (test_endblock_raise): add test for
-	  above.
-
-Sun Jun 20 16:17:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* id.c (Init_id): add underscore name.
-
-	* parse.y (warn_unused_var): ignore underscore name.
-
-	* parse.y (warn_unused_var): use same format as shadowing local
-	  variable.
-
-	* parse.y (shadowing_lvar_gen): get rid of adding extra name for
-	  shadowing local variable.  [ruby-dev:41628]
-
-Sat Jun 19 11:11:37 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb.rb: remove double exclamation marks.  a patch from Diego
-	  Viola.  [ruby-core:30589]
-
-Sat Jun 19 03:35:58 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/to_ruby.rb (resolve_klass): fix the
-	  exception message when attempting to load an unknown class.  Thanks
-	  nobu! [ruby-dev:41399]
-
-	* test/psych/test_psych.rb: test for the exception message
-
-Fri Jun 18 10:37:46 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* gc.c (gc_lazy_sweep): clean a warning.
-	  "suggest parentheses around assignment used as truth value"
-
-	* transcode_data.h (getGB4bt1): clean a warning.
-	  "suggest parentheses around arithmetic in operand of |"
-
-	* transcode_data.h (getGB4bt3): ditto.
-
-	* vm.c (thread_free): clean a warning. "format 'p' expects type
-	  'void *', but argument 3 has type 'struct rb_mutex_struct *'"
-
-Fri Jun 18 10:15:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c: add prototype of rb_realpath_internal.
-
-	* load.c: ditto.
-
-Fri Jun 18 01:50:21 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* object.c: Object#public_methods, private_methods, etc. returns
-	  method ids that belong to the class or the singleton class(es) of
-	  the object.  [ruby-dev:41613]
-
-	* class.c: on the other hand, Module#public_instance_methods, etc.
-	  returns method ids that belong to the module itself (even if the
-	  module is singleton, it does not return method ids of super
-	  class(es); see [ruby-core:28837]).
-
-Fri Jun 18 01:22:55 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/webrick/httpservlet/filehandler.rb
-	  (prevent_directory_traversal): apply filesystem encoding to path
-	  only during calling File.expand_path.  [ruby-dev:41423]
-
-Thu Jun 17 23:20:14 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* load.c (rb_load_internal): remove call to rb_realpath_internal
-	  within rb_load_internal which caused big performance degradation.
-	  Instead, call rb_realpath_internal in the caller of
-	  rb_load_internal.  [ruby-dev:41502] [ruby-dev:41610]
-
-	* vm.c (rb_vm_call_cfunc): ditto.
-
-	* eval_intern.h (rb_vm_call_cfunc): ditto.
-
-	* ruby.c (process_options): ditto.
-
-Thu Jun 17 18:37:47 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (rb_str_encode_ospath): when the encoding of the parameter
-	  is ASCII-8BIT, should recognize as filesystem encoding, and convert
-	  to UTF-8 on Windows.
-
-	* file.c (realpath_rec): should convert to ospath encoding before
-	  calling lstat().
-
-	* file.c (rb_realpath_internal): resolved string should take over
-	  the encoding of base string.
-
-	* transcode.c (rb_str_encode): should return new string always.
-	  fixed #3444.
-
-Wed Jun 16 18:34:54 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y: ripper needs warn_unused_var(), too.
-
-Wed Jun 16 18:20:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (warn_unused_var): warn unused variables.
-	  [ruby-dev:41620]
-
-Wed Jun 16 15:40:53 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* error.c (rb_bug): existence of _set_abort_behavior() depends on
-	  runtime version, not compiler version.
-
-Wed Jun 16 01:38:40 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/fiddle/extconf.rb: check ffi.h even when pkg-config succeeded.
-	  On Debian/lenny, which is a "supported" platform, ffi.h is installed
-	  in /usr/include/i486-linux-gnu/.  This causes build error when using
-	  gcc whose target is not i486-linux-gnu.
-
-Wed Jun 16 00:04:38 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_io.rb (safe_4): does not use Timeout because
-	  Timeout.timeout uses Thread#kill which raises SecurityError when
-	  $SAFE == 4.  based on a patch from Tomoyuki Chikanaga.
-	  [ruby-dev:41484]
-
-	* test/ruby/test_io.rb (test_print_separators): use pipe (test helper
-	  method) instead of IO.pipe.  [ruby-dev:41484]
-
-Tue Jun 15 17:14:58 2010  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/fiddle/extconf.rb: De Morgan's laws.
-
-Tue Jun 15 12:09:00 2010  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* ext/fiddle/extconf.rb: use pkg_config to find ffi.h.
-
-Tue Jun 15 02:31:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, common.mk (clean-ext, clean-enc): clean up cleaning
-	  targets.
-
-Mon Jun 14 22:36:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/socket/test_socket.rb (test_udp_server): rescue Errno::ENOSYS
-	  for Windows.
-
-	* test/socket/test_nonblock.rb (test_sendmsg_nonblock_error): ditto.
-
-	  [ruby-dev:41597] reported by Masaya Tarui.
-
-Mon Jun 14 17:44:39 2010  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb: raise DRbConnError instead of ArgumentError if too
-	  many arguments. [ruby-dev:41481]
-
-	* test/drb/test_drb.rb: ditto.
-
-	* test/drb/drbtest.rb: ditto.
-
-Mon Jun 14 04:03:55 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/fiddle/closure.c (dealloc): refix workaround r28300.
-	  don't use ffi_closure_alloc, ffi_prep_closure_loc and
-	  ffi_closure_free on MACOSX and __linux__.
-	  [ruby-dev:41483] [ruby-dev:41214]
-
-Sun Jun 13 15:46:07 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rubyoptions.rb: add a simple test for __END__ and
-	  DATA.
-
-Sun Jun 13 04:24:18 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/delegate.rb: Delegate !=, eql? and hash [ruby-core:26139]
-
-Sun Jun 13 02:12:46 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/utf8_mac.trans (buf_apply): fix for patterns
-	  whose result is 2 bytes. [ruby-core:30751]
-
-Sun Jun 13 01:38:17 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* time.c (rb_localtime_r2): fix mixed declarations and code.
-
-Sun Jun 13 00:27:24 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/dl/lib/dl.rb: don't require when already loaded.
-
-Sun Jun 13 00:02:56 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/fiddle/closure.c (dealloc): workaround fix for libffi's
-	  ffi_closure_free. [ruby-dev:41483] [ruby-dev:41214]
-
-Sat Jun 12 10:02:26 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_syscall): should check argument string taint before
-	  invoking system calls.
-
-Sat Jun 12 09:18:31 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (uninitialized_constant): process through
-	  rb_class_real() to remove "Object::" from error message.
-	  [ruby-dev:40951]
-
-Sat Jun 12 00:38:37 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/dbm/extconf.rb: accept Berkley DB version 3, 4 and 5.
-	  a patch from Takahiro Kambe.  [ruby-dev:41531]
-
-Fri Jun 11 23:21:35 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (init_leap_second_info): check the result of
-	  gmtime_with_leapsecond.
-
-Fri Jun 11 23:04:59 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_get_ciphers):
-	  use sk_SSL_CIPHER_num and sk_SSL_CIPHER_value instead of cast.
-	  patched by Takahiro Kambe [ruby-dev:41530]
-
-Fri Jun 11 22:59:31 2010  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/missing.h (isnan): fix compilation error on OpenBSD.
-
-Fri Jun 11 22:39:50 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rubygems/install_update_options.rb
-	  (Gem::InstallUpdateOptions#add_install_update_options): deprecate
-	  --test option which has not worked.  [ruby-core:21714]
-
-	* test/rubygems/test_gem_command_manager.rb: ditto.
-
-Fri Jun 11 07:34:25 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (find_time_t): test the result of LOCALTIME.
-
-Fri Jun 11 00:42:45 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (rb_localtime_r2): fix localtime overflow check.
-
-Thu Jun 10 23:05:44 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (rb_localtime_r2): refine localtime overflow check for
-	  FreeBSD 6.4.
-
-Thu Jun 10 09:10:08 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_putc): documentation updated to mention putc would
-	  not work well with multi-byte characters.  [ruby-core:30697]
-
-	* io.c (rb_f_putc): ditto.
-
-Wed Jun  9 22:51:50 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (find_time_t): always extrapolate from past.
-	  [ruby-core:30672] reported by Benoit Daloze.
-
-Wed Jun  9 22:13:08 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (calc_tm_yday): extracted from timegmw_noleapsecond.
-
-Tue Jun  8 06:27:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gem_prelude.rb: load full rubygems at LoadError for activation
-	  check.  [ruby-core:29486]
-
-Tue Jun  8 06:04:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (parse_mode_enc): set set_by_bom bit.  [ruby-core:30641]
-
-Sun Jun  6 22:37:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_buf_cat_escaped_char): get rid of buffer
-	  overflow on platforms int is bigger than 32bit, and warnings.
-
-Sun Jun  6 19:55:21 2010  Tanaka Akira  <akr@fsij.org>
-
-	* array.c (rb_ary_product): clear uninitialized elements in temporary
-	  array.
-
-Sun Jun  6 12:31:57 2010  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c: set_heaps_increment is not
-	  called before gc_marks of lazy sweeping because live_num not
-	  contain finalize objects. So call set_heaps_increment after lazy
-	  sweeping if free_num are not enough. And move free_min to struct
-	  rb_objspace for above.  [ruby-dev:41499]
-
-Sun Jun  6 10:44:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_product): need to set the length in order to get
-	  the entries marked.  [ruby-dev:41540]
-
-Sun Jun  6 08:26:01 2010  Tanaka Akira  <akr@fsij.org>
-
-	* vm.c (Init_BareVM): call Init_native_thread here.
-
-	* thread.c (Init_Thread): don't call Init_native_thread.
-
-	* thread_pthread.c (Init_native_thread): exported.
-
-	* thread_win32.c (Init_native_thread): ditto.
-
-	[ruby-dev:41536]
-
-Sun Jun  6 08:21:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* NEWS: Enumerable#join has been reverted.  [ruby-core:30604]
-
-Sat Jun  5 20:30:49 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_expr_str): ASCII incompatible strings
-	  must always escape or converted.
-
-	* re.c (rb_reg_expr_str): use rb_str_buf_cat_escaped_char
-	  when resenc is given: for Regexp#inspect or error message.
-
-	* re.c (rb_reg_desc): add 'n' for ENCODING_NONE.
-
-Sat Jun  5 01:20:14 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (sym_inspect): Escape when the symbol is not
-	  resulted encoding and not ascii_only. It had escaped
-	  ascii-incompatible string, but it is wrong.
-
-Sat Jun  5 01:10:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_buf_cat_escaped_char): defined.
-	  Splited from rb_str_inspect.
-
-Sat Jun  5 16:39:13 2010  Tanaka Akira  <akr@fsij.org>
-
-	* .gdbinit (rp): show type name for RTypedData.
-
-Sat Jun  5 15:59:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options, load_file_internal): $0 seen from
-	  required libraries by -r option should be the main script.
-	  [ruby-core:23717]
-
-Sat Jun  5 15:15:52 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/envutil.rb (EnvUtil#invoke_ruby): support for child
-	  process env.
-
-Sat Jun  5 14:11:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/net/imap/test_imap.rb (test_exception_during_shutdown):
-	  need to raise always.
-
-Sat Jun  5 13:13:30 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb (eql?, ==, minor): Fix bugs when comparing/returning
-	  some empty matrices.
-
-Sat Jun  5 11:00:48 2010  Tanaka Akira  <akr@fsij.org>
-
-	* error.c (rb_name_err_mesg_new): guard mesg, recv and method.
-	  The problem in [ruby-dev:41464] is caused because mesg is collected.
-
-Sat Jun  5 10:03:31 2010  Tanaka Akira  <akr@fsij.org>
-
-	* .gdbinit (rp): detect and show RTypedData.
-
-Sat Jun  5 08:30:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_f_test): 'W' should test writable by real uid/git,
-	  not world writable.   [ruby-core:30587]
-
-Sat Jun  5 06:20:57 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* dir.c: Clarification of what '*' matches.  Patch by John Wells
-	  <john.wells at greatworx.com>
-
-Fri Jun  4 10:46:33 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_inspect): should taint the result.
-	  [ruby-dev:41533]
-
-Fri Jun  4 09:37:15 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (gc_sweep): suppress a warning on VC, again.
-
-Thu Jun  3 23:34:55 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/lib/digest/hmac.rb: Emit a deprecation warning in
-	  verbose mode and add a caution to the overview section of the
-	  document. [ruby-dev:41525]
-
-Thu Jun  3 19:33:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_inspect): suppress warnings by
-	  rb_sprintf.
-
-	* ext/dl/cptr.c (rb_dlptr_s_malloc): suppress warnings.
-
-Thu Jun  3 18:58:28 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (ruby_init_ext): statically linked extensions have no
-	  real path.  [ruby-dev:41526]
-
-	* vm.c (rb_vm_call_cfunc): add filepath argument.
-
-Thu Jun  3 18:17:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/rake/test_win32.rb (Rake::TestWin32): update tests.
-	  [ruby-core:30309]
-
-	* test/io/nonblock/test_flush.rb (test_flush): try pipe and
-	  socketpair.  [ruby-dev:41517]
-
-Thu Jun  3 09:36:43 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/dl.h (DLSTACK_TYPE): type of stack is same as VALUE.
-	  reported by sakiyama shin in [ruby-dev:41514]
-
-Thu Jun  3 06:30:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_path.rb (test_path): workaround for drive
-	  letter.
-
-	* test/ruby/test_path.rb (test_path): get rid of blocking on
-	  access to non-existent host.
-
-Thu Jun  3 05:37:46 2010  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* tool/rbinstall.rb (install-bin): Allow bin/* install from dot-dirs.
-	  Fixes rvm and multiruby installations.
-
-Thu Jun  3 01:22:45 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: fix typo and race condition.
-
-Thu Jun  3 00:58:45 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/dl/lib/dl/cparser.rb (parse_ctype): add backwards compatibility
-	  by supporting "uint" types in the c parser. [ruby-core:29750]
-	* test/dl/test_cparser.rb: adding a test for "uint" changes.
-
-Wed Jun  2 11:40:02 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): should consider block on stack,
-	  if block argument is passed.  [ruby-core:30534]
-
-	* parse.c (arg_concat_gen): should append to nd_head, not to
-	  nd_iter for NODE_BLOCK_PASS.
-
-Tue Jun  1 23:12:06 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (unescape_nonascii): \P{FOO} is also Unicode property in
-	  regexp. [ruby-core:30540]
-
-Tue Jun  1 21:29:39 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb: adding support to rfc5789 patch verb.
-	  Added a Net::HTTP::Patch class which expects a message body
-	  and response body. It recycles the post method into a patch one,
-	  that will send the encoded representation to the server.
-	  Summarizing, a new class has been created, the post method
-	  extracted into send_entity, including a new argument,
-	  which defines which class to use (Post or Patch) and
-	  finally a patch method was created. [ruby-core:30426]
-	  Patched by Guilherme Silveira
-	  <guilherme.silveira AT caelum.com.br>
-
-Tue Jun  1 03:46:08 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/readline/extconf.rb: reject GPLv3 readline. [ruby-dev:39172]
-	  [ruby-core:25272] [ruby-dev:39167] [ruby-core:28736]
-
-Tue Jun  1 01:14:31 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* io.c (pipe_open): add RB_GC_GUARD.
-	  This caused failure when test/ruby/test_argf.rb is executed with
-	  GC.stress = true in mswin32_90
-
-Mon May 31 23:44:22 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: use tclConfig.sh/tkConfig.sh when frameworks
-	  are enabled on MacOS X.
-
-	* ext/tk/stubs.c: dirty hack for frameworks and stubs on MacOS X.
-
-	* ext/tk/lib/tk.rb: stop creating a dummy Tcl/Tk interpreter.
-	  And hide a root window before starting eventloop. (for ruby 1.9)
-
-	* ext/tk/tcltklib.c: add codes to support Ruby/Tk-Kit (Rubykit).
-
-Mon May 31 21:49:42 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS::Requester#request): rescue ECONNRESET
-	  for Windows.  reported by U.Nakamura.  [ruby-dev:41477]
-
-Mon May 31 19:25:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regparse.c (onig_syntax_warn): do not use external strings as
-	  printf format.
-
-Mon May 31 18:22:23 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode-set-encoding): skip shebang line
-	  always regardless of ruby.
-
-Mon May 31 15:07:18 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (file_expand_path): Refix r28102: this breaks
-	  r28039. test for [ruby-dev:41429] is added. [ruby-core:30516]
-
-Mon May 31 14:47:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): inspect as ASCII when the codepoint
-	  of a character in Unicode string is ASCII printable one.
-
-Mon May 31 13:44:40 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_unicode_p): check the encoding is Unicode
-	  or not by the name; not function's pointer. [ruby-dev:41479]
-
-Mon May 31 04:03:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): check if expanded dname encoding is
-	  compatible with fname, not just copying.  [ruby-core:30516]
-
-	* test/ruby/test_beginendblock.rb (test_endblockwarn): needs
-	  encoding comment.
-
-Mon May 31 02:17:54 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (defined): respond_to_missing? may not be available
-	  (for BasicObject instances).
-
-Mon May 31 01:43:42 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/delegate: Delegator: combine (public|protected) methods with
-	  those of the delegated object. [ruby-core:27224]
-	  DelegateClass: combine (public|protected) instance methods
-	  with those of the delegated superclass.
-
-Sun May 30 22:18:49 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/set.rb (keep_if, select!): New methods [ruby-core:29749]
-
-Sun May 30 21:51:59 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rake/test_application.rb: update a test because of r28089.
-
-Sun May 30 21:48:07 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/tempfile.rb (Tempfile#unlink): leave @data.  Assigning nil to
-	  @data caused double closing error of the same IO in finalizer.  a
-	  patch from Simon Nicholls.  [ruby-core:29395]
-
-Sun May 30 18:47:15 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: updated to b856dd07.
-	  this cleans warnings.
-
-Sun May 30 18:25:55 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* load.c (load_failed): use more accurate error message.
-	  [ruby-core:23851]
-
-Sun May 30 16:54:34 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* file.c (rb_file_directory_p): update rdoc.  a patch from Ilkka
-	  Laukkanen.  [ruby-core:30016]
-
-Sun May 30 14:59:13 2010  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_mark_all_clear): don't call obj_free() in
-	  gc_mark_all_clear(), because obj_free() may make T_ZOMBIE
-	  objects.
-
-	* gc.c (gc_clear_mark_on_sweep_slots): renamed.
-
-	* gc.c (rb_objspace_call_finalizer): call
-	  gc_clear_mark_on_sweep_slots() before calling mark_tbl().
-	  [ruby-dev:41459]
-
-Sun May 30 03:40:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_tokadd_utf8, parser_tokadd_string): allow NUL
-	  containing symbol literals, as well as String#to_sym.
-	  [ruby-dev:41447]
-
-Sun May 30 03:03:20 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rdoc/generator/template/darkfish/classpage.rhtml:
-	  fix encoding value of XML declaration. [ruby-dev:41452]
-
-Sun May 30 02:20:26 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* thread.c (RB_GC_SAVE_MACHINE_CONTEXT), gc.c (ruby_gc_stress_start):
-	  revert r28078.
-
-Sun May 30 02:21:34 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/zlib/zlib.c (zstream_append_input2): add RB_GC_GUARD.
-	  This caused failure when test/csv is executed with GC.stress = true.
-
-Sun May 30 01:25:48 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* thread.c (RB_GC_SAVE_MACHINE_CONTEXT): start GC
-	  by switching the thread if gc_stress == true
-
-	* gc.c (ruby_gc_stress_start): ditto.
-
-Sun May 30 00:02:39 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gc.c (force_chain_object, rb_objspace_call_finalizer): delete
-	  finalizer entry after corresponding finalizer is executed.
-	  This caused SEGV when test/cgi is executed with GC.stress = true.
-
-Sat May 29 23:30:33 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (str_replace_shared): change embedded state atomically.
-	  [ruby-core:29953] [ruby-dev:41456]
-
-Sat May 29 12:56:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encindex): avoid infinite require
-	  loop. [ruby-core:30467]
-
-Sat May 29 12:05:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb (RDoc#read_file_contents): take care of BOM.
-	  [ruby-dev:41452]
-
-Sat May 29 10:12:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (GC_PROF_TIMER_STOP): regularize `marked' to suppress
-	  warnings.
-
-Sat May 29 09:34:32 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/envutil.rb: fix for --disable-gems.
-
-Sat May 29 09:04:06 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS::Requester#request): rescue ECONNREFUSED.
-
-Sat May 29 08:46:29 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (allocate_sorted_heaps, before_gc_sweep, gc_sweep): removed
-	  unused variables.
-
-Fri May 28 20:35:21 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (blocking_region_begin): avoid RUBY_VM_CHECK_INTS()
-	  call during GVL state transition. [Bug#3354] [ruby-dev:41435]
-
-Fri May 28 19:37:47 2010  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c: use simple lazy sweep algorithm for response performance
-	  gain. See [ruby-dev:41067].
-
-	* object.c: FL_MARK of some objects by lazy sweep is copied when
-	  RVALUE is cloned. These objects are not marked in the mark phase.
-	  So delete FL_MARK.
-
-	* class.c: ditto.
-
-Fri May 28 18:39:38 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (sym_inspect): escape ASCII-compatible strings.
-
-	* string.c (rb_str_inspect): escape ASCII-compatible strings.
-
-Fri May 28 17:34:48 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* array.c (rb_ary_product): Use tmpary instead, to ensure marking
-	  arrays by GC.
-
-Fri May 28 11:40:07 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* array.c (rb_ary_product): Do not rely on GC, t0 should be
-	  checked explicitly.
-
-Fri May 28 10:40:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (checking_for): ignore toplevel.
-
-Fri May 28 00:47:16 2010  Masaya Tarui  <tarui@ruby-lnag.org>
-
-	* error.c (rb_bug): suppress the error report dialog if report_bug()
-	  is finished successfully.
-
-Fri May 28 00:32:25 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* insns.def (invokesuper): check consistency between class of self and
-	  class of method being invoked by super.  This is temporary measure
-	  for YARV.  See [ruby-core:30313] in detail.  See [ruby-dev:40959]
-	  [ruby-dev:39772] [ruby-core:27000] [ruby-core:27230]
-
-	* vm_insnhelper.c (vm_search_superclass): ditto.
-
-Thu May 27 23:38:31 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (rb_home_dir): set filesystem encoding.
-
-Thu May 27 23:29:18 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (file_expand_path): set encoding as the same of fname
-	  when _result_ is not filesystem encoding. [ruby-dev:41429]
-
-Thu May 27 23:07:45 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (file_expand_path): use rb_enc_associate_index and
-	  rb_filesystem_encindex. Strings related FileSystem should
-	  have filesystem_encoding.
-
-	* file.c (SET_EXTERNAL_ENCODING): removed.
-
-Thu May 27 23:03:19 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_filesystem_encindex): defined.
-
-	* include/ruby/encoding.h (rb_locale_encindex): ditto.
-
-	* encoding.c (rb_filesystem_encindex): remove static.
-
-	* encoding.c (rb_locale_encindex): ditto.
-
-Thu May 27 22:34:27 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read): call ReadFile() with len = 0 before
-	  reading really on console, because the first ReadFile() call after
-	  PeekConsoleInput() always returns broken data. (Windows's bug).
-	  [ruby-core:29018]
-
-Thu May 27 12:42:23 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* LGPL: Removed.  We no longer have LGPL'd source files in our
-	  tree.
-
-Wed May 26 20:19:22 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (random_rand): add the result of random to the
-	  beginning of range, not the opposite.  [ruby-dev:41415]
-
-Wed May 26 19:55:33 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (file_expand_path): revert a part of r22392. it's commit miss.
-
-Wed May 26 18:40:23 2010  Masaya Tarui  <tarui@ruby-lang.org>
-
-	* test/rinda/test_rinda.rb (TupleSpaceTest, TupleSpaceProxyTest):
-	  kill a used thread at teardown.  [ruby-dev:41397]
-
-Wed May 26 12:08:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (random_rand): subtraction method of non-numeric can
-	  return Float.  [ruby-dev:41410]
-
-Wed May 26 11:50:09 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* marshal.c (Init_marshal): document marshal_dump and marshal_load.
-
-Wed May 26 10:35:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_large_fd_select): needed on mingw, even
-	  though fd_mask is not available.  [ruby-core:30401]
-
-Tue May 25 14:00:51 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regparse.c (add_code_range_to_buf0): fix false negative
-	  warning when given range is just before previous range.
-	  [ruby-dev:41406]
-
-Tue May 25 16:37:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-version): take revision if
-	  keyword is expanded. [ruby-dev:41408]
-
-Tue May 25 13:26:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/vm.h, include/ruby/encoding.h: add external
-	  linkage.
-
-Tue May 25 01:46:49 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (rb_f_caller): update rdoc.  a patch from Nobuhiro IMAI
-	  <nov at yo.rim.or.jp> in [ruby-dev:41387].
-
-Mon May 24 23:04:41 2010  Tanaka Akira  <akr@fsij.org>
-
-	* error.c: fix wrong exception class name in rdoc.
-
-Mon May 24 19:00:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (warn_balanced, parser_yylex): no warnings after closing
-	  parens.
-
-Mon May 24 12:52:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (change), tool/change_maker.rb: make a brief template
-	  for ChangeLog.
-
-Mon May 24 09:19:59 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (gc_sweep): suppress a warning on VC.
-
-Mon May 24 08:16:02 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_f_spawn): use correct command name for the error
-	  message.  [ruby-dev:41395]
-
-Sun May 23 17:48:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/lib/openssl/x509-internal.rb, lib/forwardable.rb,
-	  lib/irb/cmd/fork.rb, lib/mutex_m.rb,
-	  lib/shell/process-controller.rb, lib/sync.rb, object.c:
-	  suppress warnings patched by Benoit Daloze at [ruby-core:30366].
-
-	* parse.y (warn_balanced): no warning for singleton class.
-	  [ruby-core:30366]
-
-Sun May 23 16:56:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (CONST_ID_CACHE, rb_intern_const): suppress
-	  warnings with -Wconversion.
-
-Sun May 23 07:08:34 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/json/stream.rb: adding a JSON streaming API
-
-	* ext/psych/lib/psych/stream.rb: ditto
-
-	* ext/psych/lib/psych.rb: using autoload
-
-	* ext/psych/lib/psych/json.rb: ditto
-
-	* ext/psych/lib/psych/json/tree_builder.rb: refactor
-
-	* ext/psych/lib/psych/visitors/json_tree.rb: refactor
-
-Sat May 22 03:53:05 2010  Satoshi Shiba  <shiba@rvm.jp>
-
-	* cont.c (fiber_setcontext): Use swapcontext() instead longjmp().
-	  [ruby-dev:41316] [Bug #3295]
-
-Fri May 21 19:11:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_convert, rb_nkf_guess): check too huge
-	  string.
-
-Fri May 21 18:12:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_intern): C90 needs nonempty macro
-	  arguments.
-
-Fri May 21 13:55:46 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBRUBYARG_SHARED): shared library will not be
-	  created unless enable-shared.
-
-	* ruby.c (ruby_init_loadpath_safe): use real path for non-shared
-	  build.
-
-Fri May 21 12:25:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_float): use dtoa directly instead of stripping
-	  needless trailing .0.
-
-	* numeric.c (flo_to_s): reverted.  [ruby-dev:41341]
-
-Fri May 21 01:06:05 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (subtract_tv): if the rest is zero, should finish waiting
-	  immediately.
-
-	* win32/win32.c (subtract): ditto.
-	  based on a patch from Roger Pack in [ruby-core:27957].
-
-Thu May 20 22:49:04 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* re.c (rb_reg_s_union_m): update rdoc.  [ruby-dev:41354]
-
-Thu May 20 22:08:28 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (rb_f_caller): update rdoc.  a patch from Nobuhiro IMAI
-	  <nov at yo.rim.or.jp> in [ruby-dev:41348].
-
-Thu May 20 22:04:05 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (vm_backtrace_each): now takes an init function to distinguish
-	  an empty stack from out of stack.  [ruby-dev:41366]
-
-	* vm_eval.c (print_backtrace, rb_thread_backtrace): ditto.
-
-Thu May 20 20:47:46 2010  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_invoke): raise NoMethodError
-	  when COM method is not found. [ruby-core:30160] [Bug #3277]
-
-	* test/win32ole/test_win32ole.rb (test_no_method_error): ditto.
-
-Thu May 20 16:17:14 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/psych/emitter: C99(gcc)-ism.
-
-Thu May 20 12:59:49 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/stream.rb: adding YAML streaming API for
-	  infinite length streams.
-
-	* ext/psych/lib/psych.rb: refactoring for streaming API
-
-	* ext/psych/lib/psych/{handler, stream, tree_builder}.rb: ditto
-
-Thu May 20 02:12:20 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/emitter.c: output strings are automatically transcoded
-
-Wed May 19 23:36:57 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: [ruby-dev:41334] [Bug #3307] invalid result
-	  on searching tcl.h/tk.h. Thanks, Masaya Tarui.
-
-Wed May 19 23:19:30 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (disconnect): closes the socket of a Net::IMAP
-	  object only when it is not closed.  [ruby-dev:41350]
-
-Wed May 19 20:09:38 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (rb_f_caller): return [] instead of nil when the function
-	  is called on toplevel.  [ruby-dev:41348]
-
-Wed May 19 19:58:01 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: mswin/mingw ruby has socketpair(), but it's
-	  not exist as such name in ruby static library, so mkmf.rb cannot
-	  find it.
-
-Wed May 19 19:45:10 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* iseq_compile_each (NODE_DEFINED): put nil first to fix stack
-	  consistency.  [ruby-core:30293]
-	  Now, lfinish[0] of defined_expr seems not to be used.  Refactoring
-	  may be needed.
-
-Wed May 19 16:55:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (rb_num2ulong): use rb_big2ulong for data from
-	  Bignum. Without this 32bit integer on 32bit environment
-	  can't converted into long.
-	  This fixes 1) and 2) of [ruby-dev:41289]
-
-Mon May 17 22:19:16 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* process.c: suppress warning for signed and unsigned type
-	  inconsistency.
-
-	* ext/psych/parser.c: ditto.
-
-	* ext/sdbm/_sdbm.c: ditto.
-
-	* ext/syck/rubyext.c: ditto.
-
-Mon May 17 21:30:50 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* .gitignore: updated.
-
-Mon May 17 21:08:53 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (argv_size): merged into join_argv() to maintain the
-	  agreement with it.  removed code has a calculation bug.
-	  fixed [Bug#2388]
-
-	* win32/win32.c (join_argv): calc and return the length of joined
-	  argv.
-	  the cause of the original bug was clarified by Masaya TARUI
-	  <tarui AT prx.jp> and the solution was suggested by him, too.
-
-Mon Apr  5 09:20:08 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/iso_2022_jp.h: add CP50220.
-
-	* enc/trans/iso2022.trans: add converter for CP50220.
-
-Mon May 17 09:37:25 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::Entry_#entries): returns pathname in
-	  UTF-8 on Windows to allow FileUtils accessing all pathnames
-	  internally.
-
-Mon May 17 01:07:48 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (rb_w32_check_imported): workaround for VC6.
-
-Sun May 16 22:21:32 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (mnew): initialize a field.  a patch from Takahiro Kambe.
-	  [ruby-dev:41312]
-
-Sun May 16 22:17:35 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval.c (setup_exception): let SystemStackError#backtrace return an
-	  single element array instead of string itself.  [ruby-core:30196]
-
-Sun May 16 21:51:04 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (parser_read_escape, parser_tokadd_escape): allow a hex or
-	  octal encoded character after \c.  This seemed to be prohibited at
-	  r13836, but its ChangeLog mentions nothing about this prohibition.
-	  So I assume this prohibition is not intended.  [ruby-core:27229]
-
-Sun May 16 21:14:04 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ruby/test_rubyoptions.rb (TestRubyOptions#test_segv_test):
-	  fixes "NoMethodError: undefined method `[]=' for nil:NilClass"
-
-Sun May 16 17:16:09 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (proc_binding): don't propagate filename and line_no of
-	  binding that is created from C level.  [ruby-dev:41322]
-
-	* vm_eval.c (eval_string_with_cref): ditto.
-
-Sun May 16 15:09:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (rb_w32_check_imported): check if extension library to be
-	  loaded imports from different ruby dll.
-
-Sun May 16 14:55:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (dln_find.o): fix dependency.
-
-Sun May 16 13:55:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_loaderror): use locale string, not ascii-8bit.
-
-Sun May 16 11:39:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/missing.h (signbit): add missing prototype.
-
-Sun May 16 10:49:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (rb_iconv_sys_fail): fix number of arguments.
-	  a patch by Masaya TARUI <tarui AT prx.jp>.
-
-Sun May 16 02:24:27 2010  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* configure.in: can not load libruby.so if gcc is used with
-	  --enable-shared on AIX.
-
-Sat May 15 17:16:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (rb_iconv_sys_fail): raise BrokenLibrary if
-	  errno is not set.  [ruby-dev:41317]
-
-Fri May 14 07:27:07 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_float): strip ".0" from end for rubyspec.
-
-Fri May 14 01:17:10 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_core.c (rb_thread_struct): add a field for sigaltstack.
-
-	* thread_pthread.c (thread_start_func_1): initialize machine stack
-	  information.
-
-	* thread.c (thread_start_func_2): set sigaltstack for each sub thread.
-	  [ruby-core:24540] [ruby-core:30207]
-
-Thu May 13 21:40:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* missing/ffs.c (ffs): fixed for non-zero values.
-
-Thu May 13 18:45:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/console/console.c (get_write_fd): return primary fd if no
-	  io is tied for writing.
-
-Thu May 13 18:15:33 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (swallow): should use more_char() instead of fill_cbuf().
-	  suggested by akr.
-
-Thu May 13 17:56:07 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/console/console.c (console_set_echo, console_echo_p): use
-	  primary fd.  [ruby-dev:41309]
-
-Thu May 13 13:30:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_float): use minimal representation.
-
-	* numeric.c (ruby_dbl2cstr): split from rb_float_new.
-
-Thu May 13 13:09:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_vm_get_sourceline): moved from eval_intern.h for
-	  vm_dump.c.
-
-Thu May 13 12:53:13 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (swallow): support text mode and UTF-16/32 as internal encoding.
-	  [Bug #1576]
-
-	* io.c (io_shift_cbuf): read and throw it away when str is NULL.
-
-Thu May 13 09:45:27 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub: link with ffs.obj.
-
-Thu May 13 07:37:49 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/sdbm/_sdbm.c: include unistd.h before sdbm.h for off_t.
-	  fix compilation problem on FreeBSD 6.4.
-
-Wed May 12 23:48:37 2010  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_quad_pack): deprecated.
-	  (rb_quad_unpack): ditto.
-
-Wed May 12 22:22:05 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (rb_big_abs_find_minbit): use ffs().
-
-	* configure.in: check ffs().
-
-	* missing/ffs.c: new file.
-
-	* include/ruby/missing.h (ffs): declared.
-
-Wed May 12 16:43:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_to_s): fixed broken output including nuls.
-
-Wed May 12 16:25:46 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_to_s): exponent needs 2 digits.
-
-Wed May 12 16:02:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_to_s): fill lower zeros.
-
-Wed May 12 15:45:36 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/generator/ri.rb (generate): should load existing cache
-	  before generating it.
-
-Wed May 12 15:04:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb (BigMath#log): improved
-	  precision and performance. [ruby-dev:41295]
-
-Wed May 12 11:39:10 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: test all IPPROTO_* constants for recent Win32
-	  SDK.
-
-Wed May 12 10:57:04 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_to_s): make minimum string representation.
-	  [ruby-core:30145]
-
-Wed May 12 09:21:05 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_m): fix wrong index for the lang
-	  option's value 'N'. reported by Masaya TARUI via IRC.
-
-Tue May 11 23:07:22 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/extconf.rb: test IPPROTO_IP and IPPROTO_IPV6 constants.
-
-	* ext/socket/mkconstants.rb: define macros for enum.
-
-	  [ruby-dev:38849]
-
-Tue May 11 21:53:18 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rake/test_task_arguments.rb: makes ENV empty during tests
-	  because ENV may change the behavior of Rake::TaskArguments.
-	  [ruby-core:29984]
-
-Tue May 11 15:14:30 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_8.c: Add new alias UTF-8-HFS for UTF8-MAC.
-	  http://www.gnu.org/software/emacs/NEWS.23.2
-
-Tue May 11 13:46:00 2010  Kenta Murata <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb (atan),
-	  test/bigdecimal/test_bigmath.rb (test_atan): explicitly specify
-	  the precision for calculating a reciprocal number of an argument.
-	  [Bug #3267]
-
-Tue May 11 11:49:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/sdbm/sdbm.h (DBM): large file support on win32.
-	  [ruby-core:23039]
-
-	* ext/sdbm/depend: objects depend on sdbm.h.
-
-Tue May 11 09:57:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h (rb_vm_get_sourceline): add prototype.
-
-Tue May 11 09:53:07 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/psych/parser.c (PSYCH_TRANSCODE): get rid of bare use of gcc
-	  extension.
-
-Tue May 11 01:20:43 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/parser.c (parse): Return strings encoded as
-	  Encoding.default_internal if set.
-
-Mon May 10 23:50:19 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (pack_unpack): add a missing break.
-
-Mon May 10 14:13:04 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* time.c (rb_big_abs_find_minbit): get rid of a warning of VC.
-
-Mon May 10 13:59:42 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c, include/ruby/win32.h (rb_w32_has_cancel_io): new
-	  function.
-
-	* io.c (WAIT_FD_IN_WIN32): check only when it's not cancelable.
-
-Mon May 10 06:59:19 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (rdoc): rdoc should depend main. Moreover when XRUBY
-	  is miniruby, it can run after miniruby is built.
-
-Mon May 10 03:36:56 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (eval_string_with_cref): propagate filename and line_no
-	  of binding.  [ruby-dev:38767] [ruby-core:28307]
-
-	* vm_core.h (rb_binding_t), proc.c: add filename and line_no fields to
-	  preserve them.
-
-Mon May 10 02:58:33 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_compile_each), vm_insnhelper.c (vm_invoke_block,
-	  vm_throw): allow "return" and "yield" even in singleton class
-	  definition.  based on a patch from wanabe <s.wanabe AT gmail.com>
-	  for "return".  [ruby-core:21379] [ruby-dev:40975]
-
-	* insns.def (defineclass): ditto (straightforwardly push block ptr,
-	  instead of dfp ptr with special flag).
-
-	* vm_core.h (RUBY_VM_CLASS_SPECIAL_P): ditto (no longer needed).
-
-	* proc.c (proc_new): ditto (remove handling for special flag).
-
-	* bootstraptest/test_jump.rb: add tests for above.
-
-Mon May 10 02:29:51 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c (fiber_switch): raise FiberError when returning to dead
-	  fiber.  [ruby-dev:40833]
-
-Mon May 10 02:07:20 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/thread.rb (ConditionVariable#wait): ensure to remove the current
-	  thread from waiters.  [ruby-core:29835]
-
-Mon May 10 00:54:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/console/console.c (console_set_raw): new method.
-
-	* ext/io/console/console.c (ttymode): reverted previous commit.
-
-Sun May  9 23:53:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (RB_GC_GUARD_PTR): get rid of removal by
-	  optimization.
-
-Sun May  9 23:07:53 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (proc_dup): copy blockprocval.  proc_dup is used by
-	  define_method, which made blockprocval be GC'ed mistakenly.
-	  [ruby-core:30023]
-
-Sun May  9 16:28:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (fiber_initialize_machine_stack_context): try to release
-	  unnecessary fibers and retry to create.  based on a patch from
-	  masaya tarui at [ruby-dev:41230].
-
-Sun May  9 08:32:56 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/generator/generator.c (fbuffer_inc_capa):
-	  fix the use of REALLOC_N. [ruby-dev:41227]
-
-Sun May  9 09:30:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/json/{generator/generator.c,parser/parser.rl}: fixed indent.
-
-	* ext/json/{generator,parser}/depend: added.
-
-Sun May  9 09:15:03 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/net/imap/test_imap.rb: use IPv4 for
-	  test_imaps_post_connection_check.  [ruby-dev:41189]
-
-Sun May  9 08:24:24 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (disconnect): terminates @receiver_thread even if
-	  @sock.shutdown raises an exception.  [ruby-dev:34881]
-
-Sun May  9 06:15:21 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* io.c (nogvl_copy_stream_sendfile): ISO C90 forbids mixed
-	  declarations and code.
-
-Sun May  9 02:57:02 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/fiddle/lib/fiddle.rb: only require DL if it hasn't been required
-	  yet. [ruby-core:30095]
-
-Sun May  9 01:15:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (stackgrowdirection): removed duplicated code, use
-	  STACK_UPPER macro instead.
-
-	* gc.h (STACK_DIR_UPPER): moved from thread_pthread.c.
-
-Sun May  9 00:35:56 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/dl/test_base.rb (libc_so, libm_so): supports solaris.
-
-Sat May  8 19:03:31 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec (config): . is no longer in $:.
-
-Sun May  9 00:27:46 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_aset): fixed argument type.
-
-Sat May  8 23:09:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* NEWS (io/console): IO#noecho and IO#raw without block are
-	  obsolete already.  [ruby-dev:41226]
-
-	* ext/io/console/console.c (ttymode): save duped file descriptors
-	  and restore tty modes using them, so that original modes can be
-	  restored even if original fds are closed.  [ruby-dev:41225]
-
-Sat May  8 13:48:31 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* array.c (rb_ary_fetch, rb_ary_splice, rb_ary_store): Improve
-	  IndexError
-	  messages [ruby-core:28394]
-
-	* hash.c (rb_hash_fetch_m): Improve KeyError message
-
-Sat May  8 13:11:28 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems/user_interaction.rb (Gem::StreamUI#ask_for_password):
-	  use io/console.
-
-	* ext/io/console: imported.  [ruby-dev:40897]
-
-Sat May  8 12:25:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_systmpdir): moved from ext/tmpdir.
-
-	* ext/etc/etc.c (etc_sysconfdir): added.
-
-	* lib/rubygems/config_file.rb, lib/tmpdir.rb: use etc.
-
-Sat May  8 11:07:41 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpAlloc): ensure buf does not get
-	  collected.  based on a patch masaya tarui at [ruby-dev:41213].
-
-Sat May  8 10:03:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (BasicSocket#connect_address): MacOS X 10.6
-	  returns "::ffff:a.b.c.d" for IPv4-mapped IPv6 address.
-	  [ruby-dev:41215] patch by Tomoyuki Chikanaga.
-
-Fri May  7 23:51:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* version.h: bump up to 1.9.3.
-
-Fri May  7 11:30:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/rbinstall.rb (install-man): install mdocs directly without
-	  temporary files.  [ruby-dev:41204]
-
-Fri May  7 09:16:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/extconf.rb (get_tclConfig_dirs): glob with EXEEXT.
-
-	* ext/tk/extconf.rb (search_tclConfig): fixed typo.
-
-Fri May  7 06:45:28 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: search directories on PATH, only if containing
-	  tclsh or wish command (probably right fix for [ruby-core:30010]).
-
-Fri May  7 03:40:58 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpCtoV): fix to check overflow.
-
-Thu May  6 22:19:38 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* cont.c: define FIBER_USE_NATIVE only when _WIN32_WINNT >= 0x0400
-	  on Windows because Fiber APIs are supported only such building
-	  (and running) environments.
-	  [ruby-dev:41192]
-
-Thu May  6 19:13:43 2010  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/openssl/test_ec.rb: added test_dsa_sign_asn1_FIPS186_3. dgst is
-	  truncated with ec_key.group.order.size after openssl 0.9.8m for
-	  FIPS 186-3 compliance.
-
-	  WARNING: ruby-openssl aims to wrap an OpenSSL so when you're using
-	  openssl 0.9.8l or earlier version, EC.dsa_sign_asn1 raises
-	  OpenSSL::PKey::ECError as before and EC.dsa_verify_asn1 just returns
-	  false when you pass dgst longer than expected (no truncation
-	  performed).
-
-	* ext/openssl/ossl_pkey_ec.c: rdoc typo fixed.
-
-Thu May  6 18:12:43 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (fiber_setcontext): Fix last commit.
-
-Thu May  6 17:16:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (rb_localtime_r2): get rid of infinite loop bug of
-	  localtime() on x86_64-darwin.  [ruby-core:30031]
-
-Thu May  6 15:56:12 2010  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/fiddle/*: Adding fiddle library to wrap libffi
-	* test/fiddle/*: testing fiddle extension
-	* ext/dl/lib/dl.rb: Requiring fiddle if it is available
-	* ext/dl/lib/dl/callback.rb: using Fiddle if it is available
-	* ext/dl/lib/dl/func.rb: ditto
-
-Thu May  6 15:04:37 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_match_m): add description about optional
-	  position parameter. [ruby-list:47064]
-	  patched by KISHIMOTO, Makoto <ksmakoto AT dd.iij4u.or.jp>
-
-Thu May  6 14:12:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/tmpdir.rb: test RUBY_PLATFORM for loading tmpdir.so to avoid
-	  LoadError.
-
-Thu May  6 12:41:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* NEWS: add rationalize methods of Complex, Float, Integer, NilClass,
-	  and Rational classes.
-
-Thu May  6 12:12:26 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README: update.
-
-Thu May  6 03:34:29 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: apply FIBER_USE_NATIVE patch.  This patch improve
-	  Fiber context switching cost using system APIs.  Detail comments
-	  are written in cont.c.
-
-Thu May  6 02:16:48 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_method.c (rb_unlink_method_entry, rb_sweep_method_entry):
-	  added.  Unlinked method entries are collected to
-	  vm->unlinked_method_entry_list.  On the GC timing, mark all method
-	  entries which are on all living threads.  Only non-marked method
-	  entries are collected.  This hack prevents releasing living method
-	  entry.
-	  [Performance Consideration] Since this Method Entry GC (MEGC)
-	  doesn't occur frequently, MEGC will not be a performance bottleneck.
-	  However, to traverse living method entries, every control frame push
-	  needs to clear cfp->me field.  This will be a performance issue
-	  (because pushing control frame is occurred frequently).
-	  Bug #2777 [ruby-dev:40457]
-
-	* cont.c (fiber_init): init cfp->me.
-
-	* gc.c (garbage_collect): kick rb_sweep_method_entry().
-
-	* method.h (rb_method_entry_t): add a mark field.
-
-	* vm.c (invoke_block_from_c): set passed me.
-
-	* vm.c (rb_thread_mark): mark cfp->me.
-
-	* vm_core.h (rb_thread_t): add a field passed_me.
-
-	* vm_core.h (rb_vm_t): add a field unlinked_method_entry_list.
-
-	* vm_insnhelper.c (vm_push_frame): clear cfp->me at all times.
-
-	* vm_insnhelper.c (vm_call_bmethod): pass me.
-
-	* bootstraptest/test_method.rb: add a test.
-
-Wed May  5 22:22:51 2010  wanabe  <s.wanabe@gmail.com>
-
-	* compile.c (iseq_set_sequence): fix check range of ic_index.
-	  a patch from Tomoyuki Chikanaga.  #3236
-
-Wed May  5 21:49:31 2010  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* dln.c (aix_loaderror): use execerror for load error on AIX.
-	  This can avoid SEGV reported by Perry Smith.  [Bug #2063]
-
-Wed May  5 20:37:54 2010  wanabe  <s.wanabe@gmail.com>
-
-	* thread_win32.c (w32_wait_events): get GVL before handle interrupt
-	  event.   [ruby-core:27199], [ruby-core:29698]
-
-Wed May  5 19:00:01 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: revert. enbugged by last commit.
-	  ([ruby-dev:41133], [ruby-dev:41134], [ruby-core:30010])
-
-	* ext/tk/README.tcltklib: ditto.
-
-Wed May  5 15:54:35 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (rb_stat): use STAT macro instead of calling stat() directly.
-	  reported by Bill Kelly.  [ruby-core:30012]
-
-Wed May  5 11:43:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/test_io.rb (megacontent-copy_stream): get rid of
-	  deadlock.
-
-Wed May  5 07:27:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_mark_method_entry): renamed.
-
-Wed May  5 05:20:27 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* method.h, vm_method.c: rename some internal functions related to
-	  rb_method_entry_t.
-	  rb_add_method_me()        -> rb_method_entry_set().
-	  rb_get_method_entry()     -> rb_method_entry_without_cache().
-	  rb_gc_mark_method_entry() -> rb_mark_method_entry().
-
-	* class.c, proc.c: ditto.
-
-Tue May  4 22:59:48 2010  wanabe  <s.wanabe@gmail.com>
-
-	* compile.c (iseq_build_body): update iseq->ic_size.
-	  a patch from Tomoyuki Chikanaga. see #3236.
-
-Tue May  4 18:51:22 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (name_err_mesg_to_str): preserve encoding of inspection.
-	  [ruby-core:29948]
-
-Tue May  4 18:38:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/fileutils/test_fileutils.rb (test_copy_stream):
-	  IO.copy_stream support binmode only currently.
-	  [ruby-core:23724]
-
-Tue May  4 12:46:09 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (argument_error): push correct backtrace.
-	  Bug #2281 [ruby-core:26333]
-
-Tue May  4 12:38:40 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (sockopt_inspect): use rb_str_cat2 and
-	  rb_str_append.
-
-	* ext/socket/ancdata.c (ancillary_inspect): refined.
-
-Tue May  4 11:48:06 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_inspect): use rb_str_cat2 and
-	  rb_str_append.
-
-Tue May  4 07:52:33 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/net/http.rb (Net::HTTPResponse#read_chunked): ensure to skip the
-	  last newline of chunk.  [ruby-core:29229]
-
-	* test/net/http/utils.rb: add an option for chunked response test.
-
-	* test/net/http/test_http.rb: add tests for chunked response.
-
-Tue May  4 03:37:54 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: Update nkf 2010-04-28.
-
-Mon May  3 21:08:16 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* sample/README: update file list. [ruby-core:28981]
-
-Mon May  3 08:15:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/emitter.c (syck_scan_scalar): set SCAN_WHITEEDGE flag
-	  when scalar begins with newline.  patches from Dave B <daz AT
-	  d10.karoo.co.uk> at [ruby-core:23019] and caleb clausen at
-	  [ruby-core:25851].  [ruby-core:23006][ruby-core:29925]
-
-Sun May  2 17:52:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/task.rb (RDoc::Task): should not override newer code.
-
-Sun May  2 17:25:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_call): ignore signedness.
-
-Sun May  2 12:04:30 2010  wanabe  <s.wanabe@gmail.com>
-
-	* iseq.c (iseq_load): allow filepath to be nil.
-	  a patch from Tomoyuki Chikanaga in [Bug #3229].
-
-Sun May  2 08:54:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::NEEDS_BINMODE): check if O_BINARY value instead
-	  of fragile check by platform name.
-
-Sun May  2 07:38:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (dir_config): should not modify argument arrays
-	  themselves.
-
-Sat May  1 22:53:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#size): stat by path name when it is
-	  closed.
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert):
-	  keep the first trace.
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert):
-	  fixed filtering.  [ruby-core:29908]
-
-Sat May  1 16:46:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_IsInfinite): don't use
-	  non-ascii character.
-
-Sat May  1 14:08:29 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/server.rb:  Fix bug when serving gems.
-
-Sat May  1 14:05:36 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc:  Upgrade to RDoc 2.5.8.
-
-Sat May  1 09:43:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert):
-	  filter out traces in minitest directory.  [ruby-core:29908]
-
-Sat May  1 06:42:57 2010  wanabe  <s.wanabe@gmail.com>
-
-	* win32/win32.c: add declaration of wstati64 for gcc.
-
-Sat May  1 02:41:33 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* merge some patches from win32-unicode-test branch.
-	  see #1685.
-
-	* file.c, include/ruby/intern.h (rb_str_encode_ospath): new function
-	  to convert encoding for pathname.
-
-	* win32.c, include/ruby/win32.h (rb_w32_ulink, rb_w32_urename,
-	  rb_w32_ustati64, rb_w32_uopen, rb_w32_uutime, rb_w32_uchdir,
-	  rb_w32_umkdir, rb_w32_urmdir, rb_w32_uunlink): new functions to
-	  accept UTF-8 path.
-
-	* win32/win32.c (rb_w32_opendir, link, rb_w32_stati64, rb_w32_utime,
-	  rb_w32_unlink): use WCHAR path internally.
-
-	* file.c (rb_stat, eaccess, access_internal, rb_file_s_ftype,
-	  chmod_internal, rb_file_chmod, rb_file_chown, utime_internal,
-	  rb_file_s_link, unlink_internal, rb_file_s_rename): use UTF-8 version
-	  functions on Win32.
-
-	* file.c (apply2files, rb_stat, rb_file_s_lstat, rb_file_symlink_p,
-	  rb_file_readable_p, rb_file_writable_p, rb_file_executable_p,
-	  check3rdbyte, rb_file_identical_p, rb_file_chmod, rb_file_chown,
-	  rb_file_s_link, rb_file_s_symlink, rb_file_s_rename): call
-	  rb_str_encode_ospath() before passing the path to system.
-
-	* io.c (rb_sysopen): ditto.
-
-	* dir.c (dir_chdir, dir_s_mkdir, dir_s_rmdir): ditto.
-
-Sat May  1 00:26:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert):
-	  assertion message must be String or Proc.  suggested by caleb
-	  clausen at [ruby-core:29884].
-
-Sat May  1 00:14:47 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_io.rb: skip false tests on Windows.
-	  [ruby-core:29886]
-
-Fri Apr 30 22:46:27 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* math.c: Math::DomainError < StandardError [ruby-core:29855]
-
-Fri Apr 30 21:40:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/test_open3.rb (TestOpen3#test_commandline): use simple
-	  command via shell.  [ruby-dev:41100]
-
-Fri Apr 30 15:38:45 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: better support for MinGW environment.
-
-Fri Apr 30 12:05:20 2010  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (file_expand_path): call rb_str_set_len before BUFCHECK to
-	  prevent rb_str_resize in BUFCHECK discard the content.
-
-Fri Apr 30 11:48:31 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* string.c (rb_str_sub_bang): String#sub! now raises an error when
-	  called on a frozen string, even if no change is made.
-	  See [ruby-core:23657]
-
-Fri Apr 30 11:40:44 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* eval.c (make_exception, rb_obj_extend): Fix error messages in case
-	  of wrong
-	  number of arguments
-
-	* file.c (rb_f_test, rb_file_s_umask): ditto
-
-	* numeric.c (int_chr, num_step): ditto
-
-	* process.c (rb_f_sleep): ditto
-
-	* re.c (rb_reg_initialize_m): ditto
-
-	* signal.c (rb_f_kill, sig_trap): ditto
-
-	* string.c (rb_str_aref_m, rb_str_aset_m, rb_str_count,
-	  rb_str_delete_bang,
-	  rb_str_slice_bang, rb_str_sub_bang, str_gsub): ditto
-
-	* proc.c (curry): rdoc fix
-
-Fri Apr 30 04:09:30 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* time.c (TIMET_MAX): should be time_t, not unsigned_time_t.
-
-Fri Apr 30 03:59:08 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* time.c (rb_time_unmagnify_to_float): should cast.
-
-Fri Apr 30 03:38:14 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (fix_mul): the width of fixnum is same as long's on all
-	  platforms.
-
-Fri Apr 30 03:17:20 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Improve algorithm for Matrix#determinant and
-	  Matrix#rank
-	  {determinant,det,rank}_e are now deprecated. [ruby-core:28273]
-	  Also fixes a bug in Determinant#rank (e.g. [[0,1][0,1][0,1]])
-	  Matrix#singular?, Matrix#regular? now raise on rectangular matrices
-	  and use determinant instead of rank.
-
-Fri Apr 30 00:52:56 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): define some constants to select
-	  collect code for win64.
-
-Thu Apr 29 20:10:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/test_open3.rb (test_commandline): use dump instead of
-	  shellwords.  [ruby-core:23797]
-
-Thu Apr 29 18:39:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/thwait.rb (ThreadsWait#join): refined rdoc again.
-	  [ruby-core:29863] [ruby-dev:41092]
-
-Thu Apr 29 14:46:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby: use more descriptive assertions.
-
-	* test/ruby: fixed nonsense assertions.
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert):
-	  reverted.  [ruby-core:29872]
-
-Thu Apr 29 12:33:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/thwait.rb (ThreadsWait#join): refined rdoc.  [ruby-core:29863]
-
-Thu Apr 29 12:16:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert): reject
-	  non-boolean values.  [ruby-core:29868]
-
-Thu Apr 29 11:20:53 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (seek_before_access): renamed.  see [ruby-core:29861].
-
-	* io.c (rb_io_s_binread): fixed rdoc.  parts of a patch from Roger
-	  Pack in [ruby-core:29861].
-
-Thu Apr 29 03:50:49 2010  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/utils.rb: Fixing an incompatibility with
-	  reflection methods returning Symbols.  Patch by
-	  HD Moore.  [ruby-core:29821]
-
-Wed Apr 28 23:53:15 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/thwait.rb: revise rdoc.  a patch from Roger Pack in
-	  [ruby-core:27362].
-
-Wed Apr 28 23:21:42 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json: Update to JSON 1.4.2.
-
-Wed Apr 28 22:53:57 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread. (rb_thread_terminate_all): revert r24591 which caused SEGV
-	  sometimes.  [ruby-dev:40936] [ruby-core:27245] [ruby-core:27416]
-
-Wed Apr 28 22:26:55 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/psych/visitors/test_yaml_tree.rb (test_struct_const): remove
-	  Struct::Foo which affects test/ruby/test_struct to warn redefining
-	  constant.
-
-Wed Apr 28 18:04:48 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_timespec): use rb_check_funcall.
-
-Wed Apr 28 17:14:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/extconf.rb: CMSG_ macros are broken on 64bit darwin,
-	  because of use of __DARWIN_ALIGN.
-
-Wed Apr 28 16:44:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h ({RSTRING,RSTRUCT,RBIGNUM}_LENINT): check long
-	  to cast to int.
-
-Wed Apr 28 16:28:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/unixsocket.c (sendmsg_blocking, recvmsg_blocking):
-	  define only when used.
-
-	* ext/socket/rubysocket.h: non-implemented method definitions need
-	  to be shared.
-
-Wed Apr 28 10:27:33 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vsnprintf.c (ruby_vsnprintf, ruby_snprintf): suppress warnings.
-	  why return int in spite of the arguments of size_t?
-
-Wed Apr 28 09:49:21 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/compile_prelude.rb: enable optimization.
-
-Wed Apr 28 09:43:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (warn_balanced): do not warn for EXPR_ENDFN.
-
-Tue Apr 27 23:57:04 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval.c (ruby_cleanup): add exception guard around code running
-	  signal handler (of r27513).  Absence of the guard made
-	  bootstraptest/test_thread.rb fail sometimes.
-
-Tue Apr 27 22:55:29 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* insns.def (onceinlinecache): add exclusion control for a region
-	  between onceinlinecache and setinlinecache.  [ruby-dev:39768]
-
-Tue Apr 27 22:40:54 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* iseq.c (set_relation): do not use top_wrapper as bottom of cref,
-	  which caused constant lookup error when "wrapped load" is used;
-	  instead, use Object as bottom, and push top_wrapper on Object.
-	  [ruby-core:25039]
-
-Tue Apr 27 21:24:40 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval.c (ruby_cleanup): before cleanup, check signal buffer and run
-	  handler if any.  [ruby-core:20970]
-
-	* thread.c (rb_threadptr_check_signal): separated from
-	  timer_thread_function.
-
-Tue Apr 27 18:00:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/net/smtp.rb (Net::SMTP#rcptto_list): fixed typo.
-	  [ruby-core:29809]
-
-Tue Apr 27 12:44:23 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc: Import RDoc 2.5.7.  Fixes #1318 and ruby-core:29780.
-
-Tue Apr 27 10:54:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_read_escape): deny extra character escapes.
-	  [ruby-core:27228]
-
-Tue Apr 27 06:20:13 2010  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (select_internal): IO which cbuf is not empty is readable.
-
-Tue Apr 27 00:07:32 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (program): check void_expr when rb_parse_in_main().
-	  [ruby-dev:38717]
-
-Mon Apr 26 20:11:05 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c, rational.c, lib/cmath.rb, lib/date.rb lib/date/delta*:
-	  reverted r27484-27486.  now official spec.
-
-Mon Apr 26 15:42:59 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/json/generator/generator.c (convert_UTF8_to_JSON_ASCII): get rid
-	  of a warning.
-
-Mon Apr 26 13:11:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (ripper_get_value): escape Qundef.
-
-Mon Apr 26 12:42:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (warn_balanced): warn according to last state.
-
-Mon Apr 26 09:05:30 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json: Update to JSON 1.4.1.
-
-Sun Apr 25 23:50:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (ruby_dup): update max fd.
-
-Sun Apr 25 21:56:49 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (fetch_internal): do not quote message data item
-	  names.  Thanks, Eric Hodel.  [ruby-core:23508]
-
-Sun Apr 25 15:59:02 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb: reverted experimental r23900.
-
-Sun Apr 25 15:51:00 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c, rational.c: reverted experimental r24565.
-
-Sun Apr 25 15:34:48 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/delta*: reverted experimental r24567 and
-	  r25393.
-
-Sun Apr 25 11:02:20 2010  wanabe  <s.wanabe@gmail.com>
-
-	* hash.c (ruby_setenv): putenv on msvcrt.dll can't remove empty value.
-
-Sat Apr 24 23:40:50 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb: use [""].pack("p").size to detect the pointer size.
-
-Sat Apr 24 21:07:27 2010  Tanaka Akira  <akr@fsij.org>
-
-	* test/psych/test_psych.rb: don't leave temporary files.
-
-Sat Apr 24 16:27:48 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (RUBY_PROGRAM_VERSION): added
-
-	* tool/rbinstall.rb: expand target file name.
-
-	* template/fake.rb.in: no need for hook if extmk.
-
-Sat Apr 24 14:40:20 2010  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: raise IOError when byte oriented operations occur with
-	  non-empty character buffer.
-	  [ruby-dev:40493] [ruby-dev:40506]
-
-Sat Apr 24 13:06:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (get_arglen): skip the last terminator of argv before
-	  checking environ.
-
-	* ruby.c (get_arglen): duplicate environ area if setenv and unsetenv
-	  are provided.
-
-	* ruby.c (set_arg0): keep empty strings.
-
-Sat Apr 24 09:44:40 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/yaml2byte.c (bytestring_append, bytestring_extend):
-	  removed wrong extra assignments.  a patch from Marcus Rueckert
-	  <darix AT opensu.se> at [ruby-core:29759].
-
-Sat Apr 24 00:41:52 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* process.c (rb_f_fork): remove after_exec() which sometimes caused
-	  two timer threads started.  [ruby-core:25217]
-
-	* signal.c: use pthread_sigmask() instead of sigprocmask().
-	  sigprocmask() is unspecified behavior on multi-thread programs.
-	  [ruby-core:25217]
-
-Sat Apr 24 00:36:05 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/dl/test_base.rb: add kfreebsd support.  based on a patch from
-	  Petr Salinger in [ruby-core:29769].
-	  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=560293
-
-Sat Apr 24 00:14:41 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl_session.c (SSL_SESSION_cmp): remove static for
-	  loopy version of openssl (0.9.8l?).
-
-Fri Apr 23 23:27:17 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_config.c: fix compilation failure with
-	  OpenSSL 0.9.8.
-
-Fri Apr 23 17:29:35 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/openssl/ossl_config.c: OpenSSL 1.0.0 support.
-	  [ruby-core:29256]
-
-	* ext/openssl/extconf.rb: check some functions added/removed at
-	  OpenSSL 1.0.0.
-
-	* ext/openssl/ossl_engine.c (ossl_engine_s_load): use engines which
-	  exists.
-
-	* ext/openssl/ossl_ssl_session (SSL_SESSION_cmp): removed at 1.0.0,
-	  so implement compatible function here.
-
-Fri Apr 23 14:37:22 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gem_prelude.rb (Gem::QuickLoader.load_full_rubygems_library):
-	  get rid of creating same regexps many times.
-
-	* lib/rubygems/custom_require.rb (Kernel#require): ditto.
-
-Fri Apr 23 14:07:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* doc/etc.rd, doc/etc.rd.ja: moved from ext/etc.
-
-	* ext/etc.c (Init_etc): fixed rdoc.
-
-Fri Apr 23 11:31:25 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc: Update to RDoc 2.5.6.
-
-Fri Apr 23 04:11:26 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ripper/test_parser_events.rb (test_unterminated_regexp):
-	  separate test.
-
-Fri Apr 23 01:47:54 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_wopen): shouldn't use FILE_FLAG_OVERLAPPED with
-	  normal file.  #1807, #2510, #2549
-
-Fri Apr 23 01:28:03 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (ubf_handle): remove unused typedef.
-
-Thu Apr 22 23:10:59 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (mnew): fix wrong error message when Kernel#public_method
-	  receives name of private method.  [Bug #2425]
-
-Thu Apr 22 22:56:42 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bootstraptest/test_thread.rb: fix test.  [Bug #2342]
-
-Thu Apr 22 21:50:17 2010  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/ext/multi-irb.rb: fix multi-irb running
-	  parallelly. [ruby-dev:41031] [Bug #3182]
-
-Thu Apr 22 17:13:34 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems: Import RubyGems 1.3.7.pre.1 (as 1.3.6.1).
-
-Thu Apr 22 16:43:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (warn_balanced): removed false warning.
-
-	* parse.y (parser_yylex): skip whitespaces after method name.
-
-Wed Apr 22 02:16:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.[ch]: replace _DEBUG with BIGDECIMAL_DEBUG
-	  to prevent activating debugging code when compiled with -DEBUG flag
-	  on Windows. [ruby-core:22989] #1308
-
-Wed Apr 21 21:24:20 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/digest/sha2/extconf.rb: check SHA256_CTX and SHA512_CTX to fix
-	  compilation failure on OpenBSD 4.4.
-
-Wed Apr 21 15:13:10 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_getc): fix incomplete character immediately before EOF
-	  with newline converter. [ruby-dev:41024]
-
-Wed Apr 21 13:44:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (regexp): check each fragments.   [ruby-core:27374]
-
-Wed Apr 21 13:36:01 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): reverted r27388 due to backward
-	  compatibility.
-
-	* parse.y (parser_yylex): warn confusing binary operators after
-	  local variable.
-
-Wed Apr 21 11:53:47 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc:  Update to RDoc 2.5.5.  Fixes bugs in ri, Darkfish and
-	  rdoc option handling.
-
-Wed Apr 21 11:31:35 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): abandoned EXPR_VCALL.
-
-Wed Apr 21 03:17:17 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_getc): set read_encoding to resulted one character
-	  string. [ruby-dev:41023]
-
-Wed Apr 21 00:29:39 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (bigmul1_karatsuba): fix calculation order to prevent
-	  underflow.  [ruby-core:29088]
-
-Wed Apr 21 00:26:17 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (NODE_NEXT, NODE_REDO): add dummy putnil instruction to
-	  fix stack consistency error.  [ruby-core:28172]
-
-	* bootstraptest/test_jump.rb: add a test for above.
-
-Wed Apr 21 00:16:44 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/zlib/zlib.c (rb_deflate_params): update buf_filled count because
-	  deflateParams writes to out buffer.  And, revert r18029 because the
-	  flush was not needed now and emits garbage.  [ruby-dev:40802]
-
-Wed Apr 21 00:01:05 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_method.c (rb_add_method_def): decrement alias count of
-	  rb_method_definition_t to prevent memory leak.  see
-	  [ruby-dev:41021].
-
-Tue Apr 20 21:33:06 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/win32/lib/win32/registry.rb (PredefinedKey#create): root key
-	  name should be a string.  fixed [ruby-core:28192]
-
-Tue Apr 20 19:25:50 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): fix for tLPAREN_ARG.
-
-Tue Apr 20 12:34:23 2010  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/{core, util}.rb (RFC822_DAYS, RFC822_MONTHS):
-	  move the constant because used only util.rb.
-
-Tue Apr 20 12:24:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (lex_state_e, IS_END, IS_SPCARG, parser_yylex): separate
-	  the state after vcall.  [ruby-core:29578]
-
-Tue Apr 20 01:03:00 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bootstraptest/test_fork.rb: add a test for [ruby-core:28924].
-
-Tue Apr 20 00:43:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_extname): skip last directory separators.
-	  [ruby-core:29627]
-
-Tue Apr 20 00:41:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (internal_{read,write}_func, rb_{read,write}_internal):
-	  reverted r27265, since now rb_thread_blocking_region() preserves
-	  errno.
-
-Mon Apr 19 23:14:45 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_thread_blocking_region, rb_thread_blocking_region_end):
-	  preserve errno.  [Bug #2606] [ruby-core:28924]
-
-Mon Apr 19 19:41:10 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::cp_r): backport r11156 from ruby_1_8.
-
-Mon Apr 19 19:18:53 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): reduced duplicated conditions.
-
-Mon Apr 19 13:58:04 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc:  Update to RDoc 2.5.4.  Fixes #3169, #3160, #3023.
-
-Mon Apr 19 12:46:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/timeout.rb (Timeout#timeout): propagate errors to the
-	  caller.  [ruby-dev:41010]
-
-Mon Apr 19 00:27:03 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm_method.c (rb_add_method_def): workaround fix for redefinition
-	  of methods. This is because cfp->me uses the rb_method_entry
-	  which is freed by redefinition of remove_method. Note that
-	  reusing may cause another problem when the usage is changed.
-	  [ruby-core:27320] [ruby-core:29464]
-
-Sun Apr 18 22:13:21 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (string_content): cond_stack and cmdarg_stack are VALUE.
-
-Sun Apr 18 18:07:47 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::IPv4::Regex): make it only accept 0 to 255.
-	  [ruby-core:29501]
-
-Sun Apr 18 12:48:51 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): seems like a symbol-literal when spaces
-	  are unbalanced.  [ruby-core:29578]
-
-Sun Apr 18 12:32:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (string_content): preserve cond_stack and cmdarg_stack.
-	  [ruby-core:29579]
-
-Sun Apr 18 05:50:58 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: defaulting binary string
-	  format to "literal" format.
-
-Sun Apr 18 02:13:59 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb (identify_identifier): add '_' to the regexp.
-
-Sat Apr 17 23:21:15 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: use AC_TRY_LINK instead of AC_TRY_COMPILE.
-	  On Solaris it can compile with signbit but can't link.
-
-Sat Apr 17 20:34:09 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/envutil.rb: update Gem::ConfigMap to fake environment for
-	  tests.  Some test of rubygems had failed because envutil.rb changed
-	  only RbConfig::CONFIG but not Gem::ConfigMap.
-
-Sat Apr 17 20:31:08 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/irb/ruby-lex.rb (identify_identifier): allow multibyte character
-	  as identifier.  [ruby-core:27275]
-
-Sat Apr 17 09:19:27 2010  wanabe  <s.wanabe@gmail.com>
-
-	* compile.c (iseq_compile_each): fix splat condition in NODE_WHEN.
-	  [Bug #2226]
-
-Sat Apr 17 08:57:41 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/net/smtp.rb (Net::SMTP#rcptto_list): continue when at least
-	  one RCPT is accepted.  based on a patch from Kero van Gelder at
-	  [ruby-core:26190].
-
-Sat Apr 17 07:43:55 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/thread/test_queue.rb (TestQueue#grind): fix typos.
-
-Sat Apr 17 07:27:53 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add Array#repeated_{combination,permutation} [Feature #2981]
-
-Sat Apr 17 05:30:22 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/core_ext.rb (yaml_as): supporting deprecated
-	  "yaml_as" method
-	* ext/syck/lib/syck/tag.rb: ditto
-
-Sat Apr 17 05:25:15 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/coder.rb (scalar): supporting deprecated methods
-	* ext/psych/lib/psych/deprecated.rb: supporting deprecated
-	  to_yaml_properties method
-
-Sat Apr 17 01:32:50 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (rb_io_rewind, rb_io_eof): add rdoc.  based on a patch from
-	  Roger Pack in [ruby-core:26771] [Bug #2377].
-
-Fri Apr 16 23:42:56 2010  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_folderitem2_invokeverb.rb (test_invokeverb):
-	  run test only when "Create Shortcut (&S)" menu is found.
-	  [ruby-core:29550] [Bug #1602]
-
-Fri Apr 16 21:52:16 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (string_content, etc): counts of CMDARG_PUSH and POP were
-	  inconsistent.  [ruby-core:22637]
-
-Fri Apr 16 21:27:57 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_coerce): revert r23389,
-	  which not only is unnecessary but also causes the inconsistency of
-	  return type.  [ruby-core:25706] [Bug #2129]
-
-Fri Apr 16 20:05:24 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/thread.rb (Queue#push, #pop, SizedQueue#push, #pop): remove
-	  code that kicks waiting thread twice, which caused race and
-	  deadlock.  a patch from James M. Lawrence.  [ruby-core:25537]
-
-	* test/thread/test_queue.rb: added.
-
-Fri Apr 16 20:01:47 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* .gitignore: updated.
-
-Fri Apr 16 16:51:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/file2lastrev.rb (VCS::SVN::get_revisions.): remind about
-	  DOSISH, sometimes.
-
-Fri Apr 16 16:15:40 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_repeated_permutation): new method added. a patch
-	  from Makoto Kishimoto in [ruby-core:29267]   [ruby-core:28724]
-
-	* array.c (rb_ary_repeated_combination): ditto.
-
-Thu Apr 15 22:41:47 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_thread_priority, rb_thread_priority_set): fix rdoc.
-	  Lower-priority thread may run even if there are higher-priority
-	  threads.  See [ruby-dev:40977].
-
-Thu Apr 15 22:33:35 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/uri/ftp.rb (URI::FTP#set_path): added to correct handling of
-	  special case where path of ftp is relative.  This converts relative
-	  path to absolute one, because external representation of ftp path is
-	  relative and internal representation is absolute.  [ruby-core:24077]
-
-	* lib/uri/ftp.rb (URI::FTP#initialize): converts absolute to relative.
-
-	* lib/uri/generic.rb (URI::Generic#check_path): allow relative path
-	  when scheme is ftp.
-
-Thu Apr 15 21:54:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/file2lastrev.rb: use backtick for ruby 1.8.
-
-Thu Apr 15 21:13:29 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/file2lastrev.rb: this should run with ruby 1.8.
-
-Thu Apr 15 20:41:10 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/file2lastrev.rb: make -q effective for files not version
-	  controlled.
-
-Thu Apr 15 14:50:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_backtrace_each): get rid of use of malloc from signal
-	  handler by using ruby_engine_name.  [ruby-core:29497]
-
-	* vm_eval.c (print_backtrace): file may be nil when segfaulted in
-	  very early stage.
-
-	* vm_dump.c (bugreport_backtrace): ditto.
-
-Thu Apr 15 11:51:49 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (help): small fix.
-
-Wed Apr 14 22:09:28 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rexml/source.rb: force_encoding("UTF-8") when the input
-	  is already UTF-8. patched by Kouhei Sutou [ruby-core:23404]
-
-Wed Apr 14 18:23:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* configure.in (signbit): signbit is a macro in C99.
-
-Wed Apr 14 17:56:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_shift_cbuf): should terminate.
-	  http://golf.shinh.org/p.rb?DECimal+number+to+BINary#Ruby
-
-Wed Apr 14 16:29:02 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (GET_STACK_BOUNDS): fixed macro argument names.  a patch from
-	  Satoshi Shiba <shiba AT rvm.jp> at [ruby-dev:40973].
-
-	* gc.h (ruby_get_stack_grow_direction): fixed prototype.
-
-	* thread_pthread.c (get_stack, ruby_stack_overflowed_p): both side
-	  should be same type.  [Bug #3145]
-
-Wed Apr 14 15:58:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_string_value_cstr): make NUL terminated if it is
-	  not done.
-
-Wed Apr 14 12:56:21 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap (encode_utf7): encode & properly.  Thanks, Kengo
-	  Matsuyama.  [ruby-dev:38063]
-
-Wed Apr 14 11:39:26 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/lib/syck/basenode.rb (Syck::BaseNode#match_path): fixed
-	  library name.
-
-	* ext/syck/lib/yaml/syck.rb: split from ext/syck/lib/syck.rb for
-	  backward compatibility.
-
-Wed Apr 14 09:24:07 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: Refix [nkf-bug:21393]. (explicit -X)
-
-Tue Apr 13 20:36:50 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: Fix: Windows Codepages wrongly convert
-	  Halfwidth Katakana. [nkf-bug:21393]
-
-Tue Apr 13 15:00:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (make_seed_value): fix leading-zero-guard condition on
-	  bdigit is smaller than 32bit.
-
-Tue Apr 13 13:57:36 2010  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/completion.rb (CompletionProc): fix [ruby-dev:40953]
-	  [Bug #3126]. Thanks Kazuhiro NISHIYAMA.
-
-Tue Apr 13 09:32:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (transcode_loop): insert output the value when
-	  fallback hash has a related key. [ruby-dev:40540]
-	  [ruby-dev:40829] #3036
-
-	* transcode.c (rb_econv_prepare_opts): pass to newhash
-	  a value with the key :fallback.
-
-Tue Apr 13 00:12:04 2010  Tanaka Akira  <akr@fsij.org>
-
-	* random.c (rand_init): use the absolute value of seed to
-	  make srand(-2**40) portable with 32bit and 64bit.
-	  [ruby-core:29292](2)
-
-Mon Apr 12 22:48:47 2010  Tanaka Akira  <akr@fsij.org>
-
-	* enumerator.c (inspect_enumerator): don't raise for uninitialized
-	  enumerator.
-
-Mon Apr 12 21:47:41 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* LEGAL: separated the section for parse.c.  contributed by Paul
-	  Betteridge in [ruby-core:29472].
-
-Mon Apr 12 09:19:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (fu_each_src_dest): ensure src is accessible.
-
-	* lib/fileutils.rb (fu_same): use File.identical? to get rid of
-	  exceptions.  [ruby-core:28141]
-
-	* lib/fileutils.rb (fu_have_st_ino): no longer used.
-
-	* lib/fileutils.rb (fu_have_st_ino): check if required method is
-	  defined, instead of platform name.
-
-Mon Apr 12 05:10:20 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: New method Matrix.build [ruby-core:28272]
-
-Mon Apr 12 03:45:25 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Deprecate elements_to_{f/i/r}
-
-Mon Apr 12 03:30:29 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Handle coercion errors by raising TypeErrors
-	  [ruby-core:26736]
-
-Mon Apr 12 00:51:21 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* io.c (rb_io_getline_fast, rb_io_getline_1): fix ARGF.lineno
-	  behavior. [ruby-core:25205]
-
-	* test/ruby/test_argf.rb (TestArgf#test_lineno3): add a test for
-	  above.
-
-Sun Apr 11 23:25:17 2010  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* configure.in: can not load libraries if --with-opt-dir is used
-	  on AIX. [Bug #3107]
-
-Sun Apr 11 14:44:45 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/irb/ruby-lex.rb (RubyLex#getc): revert r10817, which caused
-	  regression for handling case when there is no newline at the end of
-	  file.  [ruby-core:28248]
-
-Sun Apr 11 12:08:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_replicate): new encoding name must be valid
-	  c-string.  [ruby-dev:40954]
-
-Sun Apr 11 11:58:23 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h (ftruncate): rename to get rid of conflict
-	  with same name but non-LFS function on MinGW.  [ruby-core:24757]
-
-Sun Apr 11 10:33:34 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc:  Update to RDoc 2.5.3.  Includes r27288 and r27290.
-
-Sun Apr 11 09:31:39 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* test/syck/*: Moved test/yaml to test/syck since it's actually
-	  testing the syck YAML engine.
-
-Sun Apr 11 08:56:44 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb (setup_output_dir): compare by Time#to_i.
-	  Cached created time doesn't have fractional times,
-	  but FileStat#mtime has; so rdoc almost always judged files
-	  are updated.
-
-Sun Apr 11 07:40:48 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb (setup_output_dir): fix typo. [ruby-core:29415]
-
-Sun Apr 11 07:01:41 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (decode_www_form_component): validate.
-	  [ruby-dev:40938]
-
-	* lib/uri/common.rb (decode_www_form): allow empty string.
-
-	* lib/uri/common.rb: fix nodoc for constant. [ruby-dev:40949]
-
-Sat Apr 10 21:26:22 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rdoc/markup/preprocess.rb (RDoc::Markup::PreProcess#handle):
-	  use File.binread to avoid locale dependency.
-
-Sat Apr 10 15:18:26 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc: Import RDoc 2.5.2
-	* lib/rdoc/parser/ruby.rb (RDoc::Parser::Ruby): Don't parse rdoc
-	  files, reverts r24976 in favor of include directive support in C
-	  parser.
-
-Sat Apr 10 13:14:22 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/openssl/ossl_ssl.c (Init_ossl_ssl): add SSLContext#ssl_timeout=,
-	  which allows net/https to specify timeout.  [ruby-core:24812]
-
-Sat Apr 10 07:36:13 2010  wanabe  <s.wanabe@gmail.com>
-
-	* vm_method.c (rb_add_method): clear attr.location before rb_ary_new3.
-	  a patch from Masaya TARUI in [Bug #3108]
-
-Sat Apr 10 05:27:26 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/psych/lib/psych/deprecated.rb: implementing Psych.quick_emit and
-	  adding deprecation warnings.
-	* ext/psych/lib/psych/visitors/to_ruby.rb: supporting deprecated
-	  yaml_initialize api.
-	* ext/psych/lib/psych/visitors/yaml_tree.rb: supporting deprecated
-	  to_yaml api.
-
-Sat Apr 10 01:08:53 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/psych/parser.c: parse raises a TypeError when nil is passed in.
-
-Sat Apr 10 00:01:51 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/pty/lib/expect.rb: preserve buffer read, instead of discard.
-	  based on a patch from Luiz Angelo Daros de Luca in
-	  [ruby-core:23464].
-
-Fri Apr  9 23:58:58 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/pty/lib/expect.rb: raise an error when argument is unexpected
-	  type.  based on a patch from Luiz Angelo Daros de Luca in
-	  [ruby-core:23464].
-
-Fri Apr  9 23:57:35 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/pty/lib/expect.rb: add rdoc.  based on a patch from Luiz Angelo
-	  Daros de Luca in [ruby-core:23464].
-
-Fri Apr  9 23:54:16 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/irb/init.rb, lib/irb/lc/help-message,
-	  lib/irb/lc/ja/help-message: add -w flag.  [ruby-core:24594]
-
-Fri Apr  9 23:51:45 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/socket/ipsocket.c (init_inetsock_internal),
-	  ext/socket/unixsocket.c (rsock_init_unixsock): check the result of
-	  listen(2).  based on a patch from Mike Pomraning.  [ruby-core:23698]
-
-Fri Apr  9 21:22:10 2010  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/completion.rb (CompletionProc): irb will be stuck with
-	  long variable name at completion. [Bug#1969]. refix [ruby-core:28366].
-
-Fri Apr  9 20:54:10 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (decode_www_form): don't ignore leading '?'.
-	  [ruby-dev:40938]
-
-	* lib/uri/common.rb (decode_www_form): check whether argument is
-	  valid application/x-www-form-urlencoded data.
-
-Fri Apr  9 20:29:13 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* dir.c (push_glob): clear up the previous commit (RB_GC_GUARD can
-	  precede the last reference).  [ruby-dev:40942]
-
-Fri Apr  9 20:05:05 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* dir.c (push_glob): add RB_GC_GUARD to prevent str being free'ed.
-	  a patch from Masaya TARUI in [ruby-dev:40939].  [ruby-dev:40514]
-
-Fri Apr  9 10:53:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* compile.c (iseq_compile_each): stop hiding, and freeze unpopped
-	  string nodes to allow method redefinition.  [ruby-dev:40641]
-
-Fri Apr  9 01:26:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (internal_{read,write}_func, rb_{read,write}_internal):
-	  preserve errno.  a patch from Takehiro Kubo in [ruby-core:29340].
-	  [ruby-core:28924]
-
-Fri Apr  9 01:12:07 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/irb/completion.rb (CompletionProc): calling the method "methods"
-	  may raise an exception.  [ruby-core:28366]
-
-Thu Apr  8 14:33:24 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* configure.in: --disable-install-doc should prohibit doxygen.
-
-Thu Apr  8 14:23:51 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h: include errno.h before defining errnos.
-	  see [ruby-core:29314]
-
-Thu Apr  8 11:45:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/yaml.rb: use Psych if only it is loaded already.
-
-	* lib/yaml.rb (YAML::EngineManager#yamler): set the result after
-	  successfully switched.
-
-Thu Apr  8 07:22:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (rand_init): ignore higher bits if all they are same as
-	  the lower sign bit.  [ruby-core:29292](2)
-
-Thu Apr  8 07:16:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb/cmd/help.rb (IRB::ExtendCommand::Help#execute): use RI
-	  interactive mode if no argument.  [ruby-dev:39839]
-
-Wed Apr  8 02:33:55 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* array.c (rb_ary_permutation): Remove limitation for lengthy permutations
-	  [ruby-core:29240]
-
-	* test/ruby/test_array.rb: ditto
-
-Wed Apr  7 23:33:55 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* misc/ruby-mode.el (ruby-mode-map): binded C-c C-c and C-c C-c C-u
-	  to comment-region and uncomment-region. Thanks Michael Klishin!
-	  [Feature #872] [ruby-core:20552]
-
-Wed Apr  7 21:44:14 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (ASCTIME): unused macro removed.
-
-Wed Apr  7 16:45:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (Makefile): reverted r27244.
-
-Wed Apr  7 11:49:34 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rexml/quickpath.rb (REXML::QuickPath::predicate):
-	  fix regexp.
-
-Wed Apr  7 09:44:48 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (Makefile): quote init-commands.
-
-	* configure.in (Makefile): `make ruby` builds ruby command
-	  even if RUBY_INSTALL_NAME is customized or it has extension.
-
-Wed Apr  7 03:28:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb (RDoc#{initialize,setup_output_dir}):
-	  initialize @last_created and use it.
-
-Wed Apr  7 02:05:41 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/fake.rb.in: not define $extout to make target in cwd.
-
-Tue Apr  6 23:01:35 2010  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* vm_core.h: Introduce UNINITIALIZED_VAR() macro.
-	* thread.c (do_select): Use UNINITIALIZED_VAR() instead FAKE_FD_ZERO().
-	  Also, remove FAKE_FD_ZERO completely. [Feature #3018]
-
-Tue Apr  6 14:53:17 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h: check definition existence before defining
-	  errno macros.
-
-	* win32/win32.c (errmap): define winsock errors mappings.
-	  these are VC++10 support. see [ruby-core:29278]
-
-Tue Apr  6 21:55:25 2010  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: test localtime(3) overflow.  [ruby-dev:40910]
-
-	* time.c (rb_gmtime_r): renamed from rb_gmtime.
-	  (rb_localtime_r): renamed from rb_localtime.
-	  (rb_localtime_r2): call rb_localtime_r and validate the result if
-	  there is overflow problem.
-	  (rb_gmtime_r2): call rb_gmtime_r and validate the result if there
-	  is overflow problem.
-
-Tue Apr  6 11:21:23 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/fake.rb.in: hooks for extconf.rb.
-
-Tue Apr  6 06:19:36 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rexml/text.rb (REXML::Text.check): comment out
-	  broken logic.
-
-Tue Apr  6 05:59:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rexml/parsers/baseparser.rb (LETTER, DIGIT):
-	  always use POSIX charclass.
-
-	* lib/rexml/parsers/baseparser.rb (NAMECHAR):
-	  remove duplicated range.
-
-	* lib/rexml/xmltokens.rb (NCNAME_STR, NAMECHAR): ditto.
-
-	* lib/rexml/parsers/xpathparser.rb (PathExpr): ditto.
-
-	* lib/rexml/text.rb (REXML::Text#initialize):
-	  initialize @parent.
-
-Mon Apr  5 19:54:58 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (make_regexp): use onig_new_with_source to keep
-	  sourcefile and sourceline.
-
-	* re.c (onig_new_with_source): copied from onig_new in
-	  regcomp.c for keep sourcefile and sourceline.
-
-Mon Apr  5 13:20:45 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h, win32/win32.c (EWOULDBLOCK): VC10 already
-	  defined EWOULDBLOCK.  based on a patch from Charlie Savage,
-	  see [ruby-core:29255]
-
-Mon Apr  5 13:10:35 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/psych/lib/psych/core_ext.rb: remove before alias.
-
-	* ext/syck/lib/syck.rb: don't warn called by itself.
-
-Mon Apr  5 13:08:24 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/mkexports.rb (each_export): VC10 support.
-	  a patch from Charlie Savage in [ruby-core:29254]
-
-Sun Apr  4 22:18:32 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (cmp): optimize for fixnums.
-	  (lt): use cmp.
-	  (gt): ditto.
-	  (le): ditto.
-	  (ge): ditto.
-	  (wlt): use wcmp.
-	  (wgt): ditto.
-	  (wle): ditto.
-	  (wge): ditto.
-	  (time_subsec): use wmod.
-
-Sun Apr  4 10:04:28 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/ruby.h: replace snprintf and vsnprintf by
-	  ruby_snprintf and ruby_vsnprintf. [ruby-dev:40909]
-
-	* configure.in: don't check snprintf(3) and vsnprintf(3).
-
-	* include/ruby/missing.h: don't declare snprintf and vsnprintf.
-
-	* include/ruby/ruby.h: include stdarg.h.
-
-	* sprintf.c: include vsnprintf.c
-
-	* vsnprintf.c: renamed from missing/vsnprintf.c.
-
-	* vsnprintf.c: remove useless ifdefs.
-
-	* win32/mkexports.rb: use ruby_snprintf and ruby_vsnprintf.
-
-Sun Apr  4 09:44:01 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (lt): call <=> instead of <.
-
-Sun Apr  4 06:46:16 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* lib/yaml: Moved to ext/syck/lib, Syck only uses Syck constant.
-	* lib/yaml.rb: Added an engine manager for choosing YAML engine.
-	* ext/syck/lib/syck/rubytypes.rb: squashed warnings when using Psych
-
-Sat Apr  3 22:47:51 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: don't define STRUCT_WIDEVAL.
-
-Sat Apr  3 18:15:02 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb (RDoc#{setup,update}_output_dir): store mtimes
-	  per files in the flag file.
-
-	* lib/rdoc/rdoc.rb (RDoc#normalized_file_list): skip already
-	  processed and unmodified files.
-
-Sat Apr  3 15:09:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (rdoc): no force-update, and add RDOCFLAGS.
-
-	* lib/rdoc/options.rb (RDoc#parse): no-force-update option.
-
-Sat Apr  3 10:51:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (random_rand): raise ArgumentError on nil, as the
-	  documentation implies.  [ruby-core:29075]
-
-	* random.c (rb_f_rand): mentioned the case of when max is nil.
-
-Sat Apr  3 06:56:11 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* array.c (rb_ary_product): Accept a block [ruby-core:29045]
-
-Sat Apr  3 04:46:00 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/file2lastrev.rb (VCS#relative_to): path and @srcdir may have
-	  different relative-ness.
-
-Sat Apr  3 03:19:01 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/benchmark.rb (Benchmark::Tms#add): fix NameError.
-	  [ruby-dev:40906]
-
-	* test/benchmark/test_benchmark.rb: add a test for above.
-
-Sat Apr  3 01:50:02 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parser/ruby.rb (RDoc#make_message): no empty lines.
-
-	* lib/rdoc/stats.rb (RDoc::Normal#print_file): send to stdout and
-	  flush always
-
-Sat Apr  3 00:03:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/class_module.rb (RDoc#merge): get rid of stack overflow.
-
-	* lib/rdoc/parser/c.rb (RDoc#handle_method): see source files in
-	  source directory.
-
-Fri Apr  2 22:13:38 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb: reverted r27186 to add generators.
-
-Fri Apr  2 21:17:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* NEWS: added reverse_lookup option.
-
-Fri Apr  2 15:26:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/rdoc/test_rdoc_ri_driver.rb (with_dummy_pager): don't grasp
-	  the terminal.
-
-Fri Apr  2 14:43:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb (RDoc::Generator): defer by autoload.
-
-	* lib/rdoc/generator/darkfish.rb: use normal library instead of
-	  gem.
-
-Fri Apr  2 14:26:26 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb (RDoc::RDoc#parse_files): don't branch by
-	  RUBY_VERSION.  reapplied r24990.
-
-	* lib/rdoc/rdoc.rb (RDoc::RDoc#parse_files): emacs local variables
-	  are delimited by a semicolon.  supported Vim style.  reapplied
-	  r24988 with fixing a typo for shebang.
-
-Fri Apr  2 14:16:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parser/ruby.rb (RDoc::Parser::Ruby): parse also rdoc
-	  files.  reapplied r24976.
-
-	* lib/rdoc/parser/c.rb: fixed a small error in the documentation.
-	  [ruby-core:24744]  reapplied r24395.
-
-	* lib/rdoc/parser.rb (RDoc::Parser.binary?): blksize may be nil
-	  and is irrelevant to whether a file is binary.  TAB and newlines
-	  would be usually considered to be included in text data.
-	  reapplied r23071 and r24297.
-
-Fri Apr  2 13:59:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/ri/paths.rb (RDoc::RI::Paths): Gem::Enable has been
-	  obsolete.  reapplied r24599.
-
-	* lib/rdoc/ri/paths.rb: follows $ridir.  reapplied r23554.
-
-	* lib/rdoc/ri/paths.rb (RDoc::HOMEDIR): expand_path deals with
-	  platform dependent environments.  reapplied r21312.
-
-Fri Apr  2 12:52:25 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/parser.rb (binary?): regression.
-
-Fri Apr  2 11:54:49 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (init_env): wrong calculation of the head of setenv
-	  string.  [ruby-core:29216]
-	  a patch from Heesob Park in [ruby-core:29218]
-
-Fri Apr  2 08:24:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (ruby_setsid): split from proc_setsid.
-
-	* process.c (proc_daemon): use EXIT_SUCCESS instead of magic number.
-
-Fri Apr  2 07:00:28 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cptr.c (rb_dlptr_inspect): fix format specifiers.
-
-Fri Apr  2 05:38:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (InitVM): calls per-VM initialization in
-	  single VM, but does nothing in MVM.
-
-Fri Apr  2 02:56:56 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: New instance methods:
-	  empty? [ruby-core:26284], each, each_with_index [ruby-core:28400],
-	  conjugate, conj, imaginary, imag, real, real?, rectangular, rect
-	  [ruby-core:26285]
-
-	  Removed compare_by*, inspect_org, cf [ruby-core:26268]
-
-	  Matrix.empty: raise on negative sizes
-
-	  Matrix.determinant: raise on rectangular matrices [ruby-core:28271]
-
-Thu Apr  1 17:17:00 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/iso2022.trans: CP50221 supports 8bit JIS.
-
-Thu Apr  1 16:44:00 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc, test/rdoc: Imported RDoc 2.5
-
-Thu Apr  1 14:30:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/utf_16{be,le}.c (utf16{be,le}_mbc_to_code): simplified.
-
-Thu Apr  1 14:07:51 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* util.c (BSD__hdtoa): don't use C99 macros. (FP_NORMAL etc)
-
-Thu Apr  1 13:30:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): support %a format. [ruby-dev:40650]
-
-	* missing/vsnprintf.c (BSD_vfprintf): ditto.
-
-	* missing/vsnprintf.c (cvt): ditto.
-
-	* util.c (BSD__hdtoa): added.  This is 2-clause BSDL licensed
-	  by David Schultz and from FreeBSD.
-
-	* LEGAL: add about hdtoa() in util.c.
-
-Thu Apr  1 13:24:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): return 0.0 if hexadecimal and
-	  badcheck is FALSE: Float("0x1p+0") works, but "0x1p+0".to_f
-	  doesn't. [ruby-dev:40650]
-
-	* util.c (ruby_strtod): allow hexadecimal integers.
-
-Thu Apr  1 13:20:50 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/scanf.rb: support %a format. [ruby-dev:40650]
-
-Thu Apr  1 12:04:10 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/ruby.h (PRE_TIMET_PREFIX): define if configure doesn't
-	  defines it.  [ruby-core:29190]
-
-Thu Apr  1 11:36:04 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_initialize): fixed a rdoc miss that textmode and
-	  binmode flag explanation was reversed each other.  a patch from
-	  Heesob Park in [ruby-core:29166].
-
-Thu Apr  1 09:54:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (RUBY_{DEFAULT,NEVER}_FREE): added.
-	  [ruby-dev:40889]
-
-Thu Apr  1 04:55:08 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (rb_big_abs_find_minbit): fix handling the last word.
-
-Thu Apr  1 04:30:11 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (long_mul): overflow condition changed.
-	  (wi_mul): ditto.
-
-Wed Mar 31 23:33:29 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (long_mul): extracted from mul and avoid integer overflow.
-	  (wi_mul): extracted from wmul and avoid integer overflow.
-
-Wed Mar 31 21:30:38 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: less bignum allocations.
-
-	* strftime.c (rb_strftime_timespec): defined to avoid rational for
-	  nano second resolution time.
-
-Wed Mar 31 16:05:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/rake/test_{package_task,rules,task_manager}.rb: use
-	  temporary directories.
-
-Wed Mar 31 13:53:13 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/rubygems/gemutilities.rb (setup, teardown):
-	  Object#to_yaml must use syck on RubyGem.
-
-Wed Mar 31 06:57:14 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (timew2timespec): fix previous change.
-
-Wed Mar 31 00:32:19 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (wdivmod): renamed from wdivmodv.  fix neg/pos and pos/neg.
-	  (split_second): return number of seconds as wideval_t.
-	  (timet2wv): new function.
-	  (wv2timet): new function.
-	  (timet2wideval): removed.
-
-Tue Mar 30 22:24:19 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: use more polymorphic operations.
-
-Tue Mar 30 22:12:38 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add URI.decode and URI.encode to Obsoleted methods,
-	  and fix typos. [ruby-dev:40852]
-
-	* NEWS: add Time#subsec.
-
-Tue Mar 30 22:07:12 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: reorder wide value implementation.
-
-Tue Mar 30 22:00:44 2010  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb.rb: support [Feature#988], [ruby-core:21177].
-	* lib/irb/context.rb: fix Context#verbose?.
-
-Tue Mar 30 21:56:33 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: make wide value more polymorphic.
-
-Tue Mar 30 21:18:32 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/psych/extconf.rb: install psych .so to not psych/ but direct.
-	  This prepends to install *.rb files to psych/psych.
-
-	* ext/psych/lib/psych.rb: require 'psych.so'.
-
-Tue Mar 30 20:55:14 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (w2v): renamed from w2xv.
-	  (v2w): renamed from xv2w.
-	  (rb_time_magnify): takes wideval_t.
-	  (rb_time_unmagnify): returns wideval_t.
-
-Tue Mar 30 19:46:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/psych/lib: moved external library dependent files from lib.
-	  [ruby-core:29129]
-
-Tue Mar 30 18:25:52 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_dirname): split from rb_file_s_dirname.
-
-	* load.c (rb_f_require_relative): use absolute path instead of
-	  expanded path.
-
-Tue Mar 30 13:57:08 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* process.c (proc_daemon): Process.daemon should raise an error on
-	  failure regardless of whether the implementation uses daemon(3)
-	  or not. [ruby-dev:40832]
-
-Tue Mar 30 13:11:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/file2lastrev.rb (VCS::GIT_SVN): removed because git-log can
-	  deal with git-svn repository faster than git-svn-info.
-
-	* tool/file2lastrev.rb (VCS#get_revisions): particular commands do
-	  not depend on instance.
-
-Tue Mar 30 08:55:50 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/psych/extconf.rb: Making library detection more agnostic.
-
-Tue Mar 30 08:10:59 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* lib/psych.rb: Fix problem with empty and white-space only strings.
-	  Thanks Peter McLain!
-	* test/psych/test_psych.rb: tests for change.
-
-Tue Mar 30 05:31:39 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* lib/psych.rb: documentation updates.  Thanks Peter McLain!
-	* lib/psych/{coder,tree_builder}.rb: ditto
-
-Tue Mar 30 03:56:13 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/psych/{emitter,parser,psych}.c: move variable
-	  declaration to the first of the block.
-
-Mon Mar 29 21:47:44 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* prelude.rb, .document: Stuff in prelude.rb should be documented
-	  as well.
-
-Mon Mar 29 20:23:05 2010  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/matrix.rb(Vector#each2, Vector#collect2): add type check for
-	  Integer[Bug #2495].
-
-Mon Mar 29 19:45:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: wide value condition changed.
-
-Mon Mar 29 18:10:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (Numeric): accept rationals.
-
-Mon Mar 29 15:10:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#open): re-open with same mode and
-	  options as initialize.
-
-Mon Mar 29 09:16:45 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* random.c: change include order; ruby.h should be at first.
-
-Mon Mar 29 06:47:25 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/psych/*: importing Psych to trunk
-	* test/psych/*: ditto
-	* lib/psych/*: ditto
-
-Sun Mar 28 10:03:51 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/scanf.rb: fix max width modifier for %f.
-
-Sun Mar 28 10:35:45 2010  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.6.0 r5717.
-	* test/minitest/*.rb: ditto.
-
-Sun Mar 28 10:12:28 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (rb_time_magnify): fix for LP64.
-
-Sun Mar 28 09:28:33 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/scanf.rb: fix %[egEFG] isn't accept.
-
-Sun Mar 28 09:53:02 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: rename small integer specialization related identifiers.
-
-Sun Mar 28 08:20:37 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (weq): specialize for small integer.
-	  (wne): ditto.
-	  (wlt): ditto.
-	  (wgt): ditto.
-	  (wle): ditto.
-	  (wge): ditto.
-	  (rb_time_magnify): ditto.
-	  (rb_time_unmagnify): ditto.
-	  (rb_time_unmagnify_to_float): new function to avoid rational for
-	  Time#to_f and Time#-.
-
-Sun Mar 28 07:12:41 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (mul): condition refined.
-
-Sun Mar 28 02:14:13 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: fix previous commit.
-
-Sat Mar 27 23:17:52 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: use 64bit arithmetic even on platforms with 32bit VALUE.
-
-Fri Mar 26 23:52:07 2010  wanabe  <s.wanabe@gmail.com>
-
-	* NEWS: add Thread#add_trace_func and Thread#set_trace_func.
-
-Fri Mar 26 22:58:10 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/openssl/ossl_x509store.c (ossl_x509store_initialize): initialize
-	  store->ex_data.sk.  a patch from Christian Holtje in
-	  [ruby-core:28907].  [ruby-core:23971] [ruby-core:18121]
-
-Fri Mar 26 19:55:41 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* Makefile.in (DOXYGEN): Define a missing variable DOXYGEN.  Build
-	  has been failing when doxygen(1) is found by configure but the
-	  variable is not defined by the system and make(1) does not allow
-	  an empty command. ("@$(DOXYGEN)" was the cause)
-
-Fri Mar 26 19:28:03 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/ruby/test_hash.rb (test_recursive_key): recursive keys are
-	  permitted now.  [ruby-dev:40735]
-
-Fri Mar 26 12:36:10 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* lib/yaml/basenode.rb: deprecating YPath methods
-
-	* lib/yaml/stream.rb: deprecating YAML::Stream#edit
-
-Fri Mar 26 12:29:28 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* lib/yaml/encoding.rb: YAML.encode, YAML.decode are deprecated.
-
-	* lib/yaml/stringio.rb: yaml/stringio.rb is deprecated.
-
-	* lib/yaml/ypath.rb: YAML::YPath is deprecated.
-
-Fri Mar 26 04:52:19 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: fix [ruby-core:28901] [Bug #2997].
-	  Thanks, Michael Graff.
-
-	* ext/tk/tcltklib.c: use xfree() for memories allocated by ALLOC().
-
-	* ext/tk/tkutil/tkutil.c: ditto.
-
-	* ext/tk/lib/tkextlib/version.rb: forgot updating.
-
-Thu Mar 25 23:53:22 2010  wanabe  <s.wanabe@gmail.com>
-
-	* thread.c (thread_reset_event_flags): set flags to thread.  [Bug #693]
-
-Thu Mar 25 23:17:16 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* file.c (rb_get_path_check): prefer #to_path over #to_str.  a patch
-	  originally written by me, and modified by Nobuyoshi Nakada.
-	  [ruby-core:24257]
-
-Thu Mar 25 18:10:08 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: Array#{uniq,uniq!} can take a block. see [ruby-dev:37998]
-
-Thu Mar 25 17:21:49 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add IO#autoclose=, IO#autoclose?, IO#codepoints,
-	  IO#each_codepoint.
-
-Thu Mar 25 14:50:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_{read,write}): fix handle leaks.  based on
-	  a patch from Heesob Park in [ruby-core:28919].  [ruby-core:28833]
-
-Thu Mar 25 12:37:37 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* NEWS: add Kernel#singleton_class.
-
-Thu Mar 25 11:34:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* bignum.c, node.h, strftime.c, enc/trans/utf8_mac.trans:
-	  added explicit casts for suppressing warnings.
-
-Thu Mar 25 11:34:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* test/ruby/test_dir_m17n.rb: HFS+ escapes invalid byte sequences of
-	  filenames.
-
-Thu Mar 25 05:44:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ruby_version): needs runnable CPP.
-
-Thu Mar 25 04:42:19 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (package): take a breath for HP-UX make
-	  [ruby-core:28938].
-
-	* tool/make-snapshot (Dir.mktmpdir): for 1.8.6 backward compatibility.
-
-	* tool/make-snapshot (package): $: no longer contains ".", in trunk.
-
-Thu Mar 25 03:52:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/charset_alias.rb: update of URL.  [ruby-dev:38360]
-
-Wed Mar 24 23:43:40 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (thread_create_core): let new thread inherit RUBY_EVENT_VM
-	  of event_flags.  [ruby-core:25191]
-
-	* thread.c (rb_threadptr_exec_event_hooks): delete RUBY_EVENT_VM if
-	  all event_hooks are removed.
-
-Wed Mar 24 22:58:02 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* configure.in: revert the previous commit, which seemed to break make
-	  install.  The files of standard libraries are directly installed to
-	  $(PREFIX)/lib/ruby instead of $(PREFIX)/lib/ruby/1.9.1
-
-Wed Mar 24 18:16:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LDSHARED, CPP): keep $(CC).  [ruby-core:28912]
-
-Wed Mar 24 14:33:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read): limit read size to 16KB if the file
-	  seems to be console.  [ruby-core:28902]
-
-Wed Mar 24 10:18:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (file_expand_path): set length of string before calling
-	  rb_enc_check because rb_enc_check scans its content.
-	  This prevents warnings by valgrind.
-
-Tue Mar 23 23:58:51 2010  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: Incorporating the fixes from the recent
-	  FasterCSV releases:  1.5.2 and 1.5.3.  New parser
-	  by Tim Elliott.  [ruby-core:25038]
-
-Tue Mar 23 18:35:46 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* object.c (rb_obj_singleton_class): new method
-	  Kernel#singleton_class.  [ruby-core:21702]
-
-Tue Mar 23 01:13:59 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket: use rsock_ prefix for internal initialization functions.
-
-Mon Mar 22 20:32:22 2010  wanabe  <s.wanabe@gmail.com>
-
-	* proc.c (rb_method_location): return attr's location if it is setup.
-	  [Feature #2084]
-
-	* NEWS: follow above.
-
-	* vm_method.c (rb_add_method): save attr's location.
-
-	* gc.c (mark_method_entry): mark attr's location.
-
-	* method.h (rb_method_definition_t): add member to save attr's location.
-
-	* vm_eval.c (vm_call0): follow above.
-
-	* vm_insnhelper.c (vm_call_method): ditto.
-
-	* vm_method.c (rb_method_definition_eq): ditto.
-
-Mon Mar 22 19:31:06 2010  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (Date#>>): fixed.  [ruby-core:28011]
-
-Mon Mar 22 18:01:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RMDIRS): use rmdir -p if possible.
-
-	* Makefile.in ({dist,real}clean-ext): fix for removing ext
-	  directories.
-
-Mon Mar 22 09:06:10 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/.document: extracted from ext/.document.
-
-Mon Mar 22 00:50:33 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/rubysocket.h (rsock_revlookup_flag): declared.
-
-Mon Mar 22 00:01:24 2010  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/setup (config.h): RUBY_EXEC_PREFIX defined.
-
-Sun Mar 21 00:46:29 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (URI.encode_www_form_component):
-	  convert strings of HTML5 ASCII incompatible encoding
-	  to UTF-8.
-
-	* lib/uri/common.rb (URI.encode_www_form_component):
-	  "\x83\x41" of Shift_JIS should be encoded as "%83A".
-	  This follows real implementations.
-
-	* lib/uri/common.rb (URI.decode_www_form_component):
-	  use given encoding for force_encoding. [ruby-dev:40721]
-
-Sun Mar 21 21:09:17 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv-replace.rb: specify super class for rdoc.
-
-	* lib/ipaddr.rb: ditto.
-
-Sun Mar 21 19:52:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_initialize): add autoclose argument to control close
-	  at finalization.  [ruby-core:26222]
-
-	* io.c (rb_io_autoclose_p, rb_io_set_autoclose): new methods.
-
-Sun Mar 21 19:50:04 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket: make sources rdoc friendly.
-
-Sun Mar 21 17:57:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (IO_RBUF_CAPA_FOR): use large buffer as cbuf if readconv is
-	  needed for performance improvement.  based on a patch by Roger Pack
-	  in [ruby-core:28163].  [ruby-core:28162]
-
-Sun Mar 21 17:14:49 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: reuse hash object.
-
-Sun Mar 21 12:32:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (transcode_compile_tree): make
-	  valid_encoding mandatory unless from_encoding is registered in
-	  ValidEncoding.
-	  (transcode_tbl_only): ditto.
-	  (transcode_tblgen): ditto.
-	  (ValidEncoding): new function.
-
-	* enc/trans/escape.trans: specify valid_encoding.
-
-	* enc/trans/emoji_sjis_docomo.trans: ditto.
-
-	* enc/trans/emoji.trans: ditto.
-
-	* enc/trans/emoji_iso2022_kddi.trans: ditto.
-
-	* enc/trans/big5.trans: ditto.
-
-	* enc/trans/emoji_sjis_softbank.trans: ditto.
-
-	* enc/trans/emoji_sjis_kddi.trans: ditto.
-
-	* enc/trans/chinese.trans: use ValidEncoding() instead of
-	  ValidEncoding[].
-
-Sun Mar 21 09:43:01 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (IO_[CRW]BUF_CAPA_MIN): replaced magic numbers.
-
-Sun Mar 21 09:22:10 2010  Tanaka Akira  <akr@fsij.org>
-
-	* object.c (rb_obj_hash): use LONG2FIX to avoid Bignum allocation.
-
-Sat Mar 20 22:51:46 2010  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_sum): use UCHAR_MAX.
-
-Sat Mar 20 19:16:42 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ActionMap.unambiguous_action): use
-	  Array#delete.
-	  (ActionMap.merge2): defined.
-	  (ActionMap::PostMemo): removed.
-	  (transcode_compile_tree): use ActionMap.merge2.
-
-Sat Mar 20 13:26:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* array.c (rb_ary_uniq_bang): the array is already unique if the
-	  length is zero or one.
-	  (rb_ary_uniq): ditto.
-
-Sat Mar 20 12:30:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib: fixed typo.  a patch by Sho Hashimoto in [ruby-dev:40716].
-
-Sat Mar 20 11:32:18 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (each_firstbyte_range): tuned for less
-	  method calls.
-
-Sat Mar 20 00:59:50 2010  wanabe  <s.wanabe@gmail.com>
-
-	* ext/dl/lib/dl/pack.rb (DL#pack): allow LLP64.
-
-Fri Mar 19 05:26:31 2010  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_sum): don't call method for each byte.
-
-Thu Mar 18 21:24:21 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (miniruby): link $(NORMALMAINOBJ).
-
-Thu Mar 18 19:52:27 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: scan singleton mappings sequentially.
-
-Thu Mar 18 06:28:32 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_EXEC_PREFIX): added to config.h.
-
-	* ruby.c (ruby_init_loadpath_safe): TMP_RUBY_PREFIX should be
-	  exec_prefix, not rubylibprefix.  [ruby-core:28718]
-
-	* version.c (RUBY_LIB_PREFIX): fallback to RUBY_EXEC_PREFIX.
-
-Thu Mar 18 05:58:27 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_{to_i,mod,divmod,div2}):
-	  removed unused variables.
-
-Thu Mar 18 04:40:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_intern3): get rid of type-punning cast.
-
-Thu Mar 18 02:29:42 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_build_body): add mark to jump table hash of case.
-
-Thu Mar 18 00:58:27 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* util.c (ruby_strtod): Add support for Hexadecimal
-	  floating-point expression [ruby-dev:40650] #2969
-
-Thu Mar 18 00:00:58 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (URI.{en,de}code_www_form_component):
-	  renamed from URI.{en,de}code_www_component. [ruby-dev:40672]
-
-	* lib/uri/common.rb (URI.encode_www_form_component): %-encoded
-	  element should have always two hex.
-
-	* lib/uri/common.rb (URI.encode_www_form_component):
-	  better treatment for ASCII incompatible encodings and
-	  encodings whose lead byte may use 7bit.
-
-	* lib/uri/common.rb (URI.decode_www_form_component): add %20.
-
-	* lib/uri/common.rb (URI.decode_www_form_component): add
-	  result's encoding as 2nd argument.
-
-	* lib/uri/common.rb (URI.decode_www_form): added.
-
-Wed Mar 17 16:25:53 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_aset): allow recursive key.  [ruby-core:24648]
-
-Wed Mar 17 06:39:59 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.h (rb_warning, rb_sys_warning): fixed typo in rdoc.
-	  [ruby-core:28696]
-
-Wed Mar 17 02:29:46 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c, iseq.c, ruby.c, vm.c, vm_core.h, vm_eval.c: add absolute
-	  path field into rb_iseq_t.  The field contains a string representing
-	  a path to corresponding source file. or nil when the iseq is created
-	  from -e, stdin, eval, etc.  This field is used for require_relative.
-	  [ruby-dev:40004]
-
-	* load.c (rb_f_require_relative): add C implementation of
-	  require_relative.
-
-	* prelude.rb (require_relative): get rid of Ruby implementation of
-	  require_relative.
-
-Wed Mar 17 01:24:01 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (rb_intern3): prohibit Symbol with an invalid encoding.
-	  [ruby-core:24621]
-
-	* test/ruby/test_m17n_comb.rb: modify a test for above.
-
-Tue Mar 16 22:51:11 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: specialize for singleton mappings.
-
-Tue Mar 16 20:13:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* enc/trans/emoji.trans: added codepoints leading 0xf4 into
-	  nomap_table.
-
-Tue Mar 16 17:33:30 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpCtoV): keep e's sign.
-	  When e doesn't over flow e * BASE_FIG but overflow e * 10,
-	  e will overflow.
-
-Tue Mar 16 17:18:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_str_conv_enc_opts): missing prototype.
-
-Tue Mar 16 15:20:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tmpdir: split from lib/tmpdir.rb.
-
-	* win32/win32.c (rb_w32_system_tmpdir): extracted from init_env.
-
-	* win32/win32.c (rb_w32_getcwd): removed duplicated code.
-
-Tue Mar 16 14:06:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (ENC_TO_ENCINDEX): suppress warnings.
-
-Tue Mar 16 14:03:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RSHIFT): parenthesize the argument of cast instead
-	  of the result.
-
-Tue Mar 16 11:23:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): ignore dname if it has different
-	  drive letter or UNC.
-
-Tue Mar 16 07:16:56 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: redundant loop removed.
-
-Tue Mar 16 07:01:43 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: refactored to use tree as memo key.
-
-Tue Mar 16 04:05:13 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: more info in generating macro names.
-
-Mon Mar 15 21:58:03 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: ActionMap#each_firstbyte inlined.
-
-Mon Mar 15 21:22:49 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (transcode_tblgen): add valid_encoding
-	  optional argument.
-
-	* enc/trans/single_byte.trans use valid_encoding argument for
-	  transcode_tblgen.
-
-	* enc/trans/chinese.trans: ditto.
-
-Mon Mar 15 18:33:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (default_rand): removed initial buffer.
-
-	* random.c (Init_RandomSeed): initialize seed of default random.
-
-	* random.c (Init_RandomSeed2): turn the seed to Bignum object.
-
-Mon Mar 15 17:28:30 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_print): RDoc update.  a patch from Daniel Kelley
-	  in [ruby-core:28643].
-
-Mon Mar 15 14:06:07 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (next_state): no initialization here.
-
-	* random.c (default_mt): always return initialized MT.
-
-Mon Mar 15 11:49:48 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* random.c (rb_reset_random_seed): set seed in this.
-	  [ruby-core:28655]
-
-Mon Mar 15 10:26:02 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: import latest nkf. [master 9306cb0]
-	  this also fixes [ruby-dev:40607]
-
-Mon Mar 15 09:34:17 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (URI.encode_www_component):
-	  call str.to_s at first.
-
-Mon Mar 15 09:36:22 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* symbian/README.SYMBIAN: fixed broken patch and converted to
-	  unified diff.
-
-Mon Mar 15 07:51:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (Init_File): do not define File::ALT_SEPARATOR on cygwin.
-
-Mon Mar 15 07:41:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (realpath_rec): use same cache.
-
-	* file.c (realpath_internal): regulate separators in prefix.
-	  [ruby-core:28653]
-
-	* file.c (FILE_ALT_SEPARATOR): separated condition.
-
-Mon Mar 15 04:41:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_each_codepoint): read directly when readconv is
-	  needed but internal encoding is not set.  [ruby-core:28650]
-
-Mon Mar 15 04:18:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/file2lastrev.rb (VCS::{SVN,GIT}#get_revisions):
-	  use block argument 'path' to get the path given by super.
-
-Mon Mar 15 02:43:59 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (Action#hash): defined.
-	  (Action#eql?): ditto.
-	  (Action#==): ditto.
-
-Mon Mar 15 01:52:46 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: refactored.
-
-Mon Mar 15 01:18:31 2010  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/setup (*.pkg): Ruby Core installation separated from standard extensions.
-
-	* symbian/configure.bat: ditto.
-
-	* symbian/README.SYMBIAN: ditto.
-
-	* symbian/setup (config.h): support for 2nd internal drive added.
-
-Mon Mar 15 00:11:23 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/file2lastrev.rb (VCS::GIT_SVN#get_revisions) :
-	  use block argument 'path' to get the path given by super.
-
-	* tool/file2lastrev.rb (VCS::GIT#get_revisions):
-	  use double quotes for Windows.
-	  patched by Vladimir Sizikov [ruby-core:28651]
-
-Sun Mar 14 22:38:31 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: consider valid_encoding for max_input.
-
-Sun Mar 14 15:46:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/emoji.trans: fix nomap_table.
-
-Sun Mar 14 09:50:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (insn_data_to_s_detail), iseq.c (insn_operand_intern):
-	  fixed format specifiers.
-
-Sun Mar 14 07:20:17 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (EXPAND_PATH_BUFFER): make it back to usascii, to prevent
-	  infinite loop on some platform. [ruby-dev:40629]
-
-Sun Mar 14 02:40:38 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: reject ambiguous mapping.
-
-	* enc/trans/single_byte.trans: remove ambiguous mapping such as
-	  \xD6 -> U+05F2 and \xD6\xC7 -> U+FB1F in Windows-1255
-
-Sat Mar 13 23:48:27 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (file_expand_path): should not just copy the encoding
-	  from fname.  [ruby-core:28635]
-
-	* file.c (EXPAND_PATH_BUFFER): set filesystem_encoding, not
-	  usascii for path buffer.
-
-Sat Mar 13 17:48:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/file2lastrev.rb: refactored.  fixed changed revision of git.
-
-Sat Mar 13 15:44:20 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_print): should not print field separator at the end
-	  of arguments.  [ruby-talk:358633]
-
-Sat Mar 13 14:49:55 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_join): remove Enumerable#join. [ruby-core:24786]
-
-	* array.c (ary_join_1): use #to_ary to detect recursive array.
-
-Sat Mar 13 12:26:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/io.h (MakeOpenFile): finalize fptr to get rid of
-	  memory leak.
-
-Sat Mar 13 11:14:26 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* load.c (rb_get_expanded_load_path): expand paths if any item in $:
-	  is not a string.
-
-Sat Mar 13 10:16:32 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* load.c (rb_get_expanded_load_path): does not expand paths if all
-	  the items in $: are absolute paths.  [ruby-core:28113]
-
-Sat Mar 13 10:03:52 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: fix [Bug #2840] Tk doesn't built in mingw.
-
-Sat Mar 13 03:24:15 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: show consumed time at last.
-
-Sat Mar 13 00:44:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_basename): check encoding of suffix.
-
-Sat Mar 13 00:11:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): mark initial load paths.
-
-	* gem_prelude.rb (push_all_highest_version_gems_on_load_path):
-	  search insertion position by initial load path mark.
-
-	* lib/rubygems.rb (Gem.load_path_insert_index): ditto.
-
-Fri Mar 12 21:34:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* NEWS: emoji encodings.
-
-Fri Mar 12 17:14:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (URI.encode_www_form): new method to
-	  generate URL-encoded form data. [ruby-dev:39246]
-
-	* lib/uri/common.rb (URI.encode_www_component,
-	  URI.decode_www_component): new method for encode/decode
-	  a name/value of HTML form.
-
-Fri Mar 12 17:36:35 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/webrick/httpservlet/cgihandler.rb
-	  (WEBrick::HTTPServlet::CGIHandler#do_GET):
-	  set binary mode for tempfile.
-	  http://pc12.2ch.net/test/read.cgi/tech/1265467681/286
-
-Fri Mar 12 13:52:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* tool/compile_prelude.rb: TMP_RUBY_PREFIX should replace
-	  rubylibprefix but not prefix.
-
-Fri Mar 12 09:43:11 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* complex.c (f_signbit): remove condition for signbit because
-	  all platforms have signbit from r26871.
-
-Fri Mar 12 07:25:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (init_env): get rid of alloca() for outer string.
-
-Fri Mar 12 07:17:15 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/racc/cparse/cparse.c: suppressed warnings for shortening on
-	  platforms where pointer is bigger than int.
-
-Fri Mar 12 07:15:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe, ruby_init_gems): set and remove
-	  TMP_RUBY_PREFIX.
-
-	* variable.c (rb_const_remove): new function.
-
-	* tool/compile_prelude.rb: split each preludes.
-
-Fri Mar 12 07:09:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (config.status): setup MINIRUBY environment for
-	  cross-compiling.
-
-Fri Mar 12 06:48:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/extconf.rb: log() is built-in in some compilers and needs
-	  proper declaration.
-
-Fri Mar 12 06:37:13 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sample/timeout.rb: split from lib/timeout.rb.
-
-Thu Mar 11 22:35:27 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_round): new method Time#round.  [ruby-dev:40595]
-
-Thu Mar 11 17:31:59 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (str_transcode0): confirm the code range.
-
-Thu Mar 11 12:14:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/signbit.c: added.
-
-Thu Mar 11 11:16:33 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check if target_archs has changed.
-
-Thu Mar 11 01:33:30 2010  wanabe  <s.wanabe@gmail.com>
-
-	* win32/win32.c (signbit): allow x64.
-
-Thu Mar 11 01:04:48 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* iseq.c (rb_iseq_clone): sets local_iseq and klass properly.
-
-Wed Mar 10 21:25:41 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enum.c (min_ii, max_ii, minmax_ii): remove wrong optimization that
-	  reuses array for yield parameter, which caused unexpected behavior.
-	  [ruby-core:25989]
-
-Wed Mar 10 12:10:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* enc/x_emoji.h: renamed from enc/x-emoji.c.
-
-Wed Mar 10 04:17:08 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (defined_expr), insns.def (defined): fix to pass a Symbol
-	  object such as :$foo for the "defined?($foo)" expression
-	  on defined instruction.  This patch fixes ISeq#to_a/load.
-
-Tue Mar  9 20:50:09 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/dl/test_method.rb: delete a residual test for dl on libffi.
-
-Tue Mar  9 18:00:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* enc/trans/EMOJI/*.src, enc/trans/emoji*,
-	  enc/x-emoji.c, test/ruby/enc/test_emoji.rb,
-	  tool/enc-emoji-citrus-gen.rb, tool/enc-emoji4unicode.rb,
-	  tool/jisx0208.rb, tool/test/test_jisx0208.rb:
-	  new encodings to support emoji charsets, which are used by
-	  Japanese mobile phones [ruby-dev:40528].
-	  Thanks Yoji Shidara for a lot of contribution.
-
-	* tool/transcode-tblgen.rb: modified for enc-emoji4unicode.rb.
-
-Tue Mar  9 14:57:40 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb (ActionMap#generate_node):
-	  remove useless dup.
-
-	* tool/transcode-tblgen.rb (transcode_tbl_only): remove duplicated
-	  method call for encode_utf8.
-
-Tue Mar  9 14:55:00 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_to_s): remove unused variable.
-
-Tue Mar  9 12:17:34 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* tool/transcode-tblgen.rb (StrSet#parse, ActionMap#generate_node):
-	  optimization (reusing object and improving memoize).
-	  [ruby-dev:40582]
-
-Sun Mar  7 02:27:03 2010  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* dln.c [DLN_NEEDS_ALT_SEPARATOR] (translit_separator): small typo
-	  fixed.
-
-	* symbian/setup (*.pkg): Shared library installation path fixed to
-	  match changes in version.c.
-
-	* symbian/setup (ruby.mmp): SOURCE dln_find.c added.
-
-Sun Mar  7 23:14:22 2010  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (rb_big_pack): use DIGSPERLONG and BITSPERDIG.
-	  (rb_big_unpack): use DIGSPERLONG.
-
-Sun Mar  7 19:21:10 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* io.c: Fix documentation for each/each_line/lines, bytes/each_byte,
-	  codepoints/each_code_point [ruby-core:23948]
-
-	* string.c: ditto
-
-	* ext/stringio/stringio.c: ditto
-
-Sun Mar  7 13:49:49 2010  Tanaka Akira  <akr@fsij.org>
-
-	* file.c: add optional basedir argument for realpath/realdirpath.
-	  (realpath_internal): handle basedir.
-	  (rb_file_s_realpath): extract basedir from argument list.
-	  (rb_file_s_realdirpath): extract basedir from argument list.
-
-	* lib/pathname.rb (realpath): pass basedir.
-	  (realdirpath): ditto.
-
-Sun Mar  7 02:05:38 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_set_filesystem_encoding):
-	  filesystem encoding on Mac OS X is now
-	  default external encoding. so Mac OS X is now
-	  treated as one of Unix. [ruby-dev:40439]
-
-	* file.c (file_path_convert): ditto.
-
-Sat Mar  6 22:07:09 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c: fix the prototype of rb_big2ulong_pack.
-
-Sat Mar  6 13:45:37 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (rb_io_s_write, rb_io_s_binwrite): delete File#write and
-	  #binwrite.  It may take a long time to make them stable, so 1.9.2
-	  should not include them.  We need refactoring to implement them
-	  again.
-
-	* test/ruby/test_io.rb: delete tests for them.
-
-Sat Mar  6 10:03:35 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (rb_io_s_binwrite): use mode "r+b" instead of "ab" to handle
-	  offset correctly.  [ruby-core:28517]
-
-	* test/ruby/test_io.rb: use assert_equal instead of assert.
-
-Sat Mar  6 01:08:54 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): VC6 has __int64.
-
-Fri Mar  5 19:36:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (econv_opts): set :undef => :replace when
-	  :replace is given and :invalid is not given. [ruby-dev:40554]
-
-Fri Mar  5 17:51:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open): suppressed a warning.
-
-	* win32/win32.c (rb_w32_map_errno, winnt_stat, rb_chsize): ditto.
-
-	* win32/win32.c (rb_w32_aspawn): get rid of overflow.
-
-Fri Mar  5 11:59:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (signbit): defined on mingw.
-
-Thu Mar  4 22:49:42 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval.c (setup_exception): avoid line number 0 when setting
-	  $DEBUG=true.  [ruby-dev:39116]
-
-Thu Mar  4 22:45:02 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (io_s_write, io_s_binwrite): add File#write and #binwrite.
-	  [ruby-core:21701]
-
-	* test/ruby/test_io.rb: add tests for above.
-
-Mon Mar  4 13:14:34 2010  wanabe  <s.wanabe@gmail.com>
-
-	* gc.c (gc_profile_total_time): add GC::Profiler.total_time.
-	  [ruby-core:27169]
-
-	* NEWS: ditto.
-
-Thu Mar  4 10:15:10 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* complex.c (m_log, m_exp): remove unused functions.
-
-Thu Mar  4 02:34:59 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_env.rb (TestEnv#test_select_bang): add tests.
-
-Thu Mar  4 02:29:52 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_hash.rb (TestHash#test_keep_if): fix typo.
-
-Thu Mar  4 00:10:54 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (HEX2): extracted from regexps.
-
-Wed Mar  3 23:16:32 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* complex.c (nucomp_real_check): raise TypeError instead of
-	  ArgumentError when argument is not a real as expected
-	  [ruby-core:28395]
-
-	* rational.c (nurat_int_check): ditto (for integers)
-
-Wed Mar  3 23:07:08 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb (Vector#each): Return self and optimization
-	  [ruby-core:28405]
-
-Wed Mar  3 18:35:55 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_select_bang): add #select! and keep_if to Hash.
-
-	* hash.c (env_select_bang): ..and to ENV.
-
-Wed Mar  3 15:54:20 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/matrix.rb (Vector#each2, collect2): small refactoring.
-
-Wed Mar  3 16:14:24 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/matrix.rb (Vector#each): make Vector enumerable.
-	  [ruby-core:28405]
-
-Wed Mar  3 14:28:23 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_select_bang): select! removes all elements for
-	  which block returns false.  [ruby-core:27286]
-
-	* array.c (rb_ary_keep_if): #keep_if, new method.
-
-Wed Mar  3 06:19:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (signbit): defined.
-
-	* win32/Makefile.sub, symbian/setup (config.h): pack.c requires
-	  SIZEOF_INT*_T now.
-
-Tue Mar  2 21:16:48 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (rb_io_lines, rb_io_bytes, rb_io_chars, rb_io_codepoints):
-	  change to alias to each_*, in similar way to ARGF and String.
-	  [ruby-core:23948]
-
-Tue Mar  2 15:54:40 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regcomp.c (noname_disable_map): add NT_ANCHOR case.
-	  Without this change, captured groups in anchors (look-ahead,
-	  look-behind, and so on) are not removed and
-	  unintended invalid backref error occur. [ruby-core:28235]
-
-	* regcomp.c (renumber_by_map): ditto.
-
-Tue Mar  2 14:42:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* test/dl/test_closure.rb: forget to revert at r26764.
-
-Tue Mar  2 14:29:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext_safe, rb_find_file_safe): skip argument
-	  checks in file_expand_path().
-
-Tue Mar  2 13:54:44 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* test/ruby/test_math.rb: Fix lgamma test
-
-Mon Mar  1 23:26:56 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (pty_open): refine the path for master IO.
-
-Mon Mar  1 20:07:06 2010  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* ext/zlib/zlib.c (zstream_expand_buffer_into): remove compare
-	  different type values warning.
-
-Mon Mar  1 17:42:45 2010  wanabe  <s.wanabe@gmail.com>
-
-	* configure.in (mingw): do not detect snprintf/vsnprintf.
-
-Mon Mar  1 16:54:21 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/oniguruma.h: updated to follow Oniguruma 5.9.2.
-
-	* re.c (make_regexp): use onig_new() instead of onig_alloc_init().
-
-	* re.c (rb_reg_to_s): ditto.
-Sun Feb 28 21:32:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pty/pty.c (get_device_once): raise on error when fail is
-	  non-zero.
-
-Sun Feb 28 18:58:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* math.c (rb_eMathDomainError): new exception class
-	  for representing mathematical domain error instead
-	  of Errno::EDOM.
-
-	* math.c (domain_check, infinity_check): removed,
-	  no longer needed.
-
-	* math.c (math_atan2, math_acos, math_asin, math_acosh,
-	  math_atanh, math_log, math_log2, math_log10, math_sqrt,
-	  math_gamma, math_lgamma): mathematical domain errors
-	  are checked and raised before calling libm's functions.
-
-	* test/ruby/test_math.rb: updated for changes of math.c.
-
-Sun Feb 28 15:07:28 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (pack_pack): use union to avoid pointer cast.
-	  (pack_unpack): ditto.
-
-Sun Feb 28 11:49:35 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* openssl/ossl.c (OSSL_IMPL_SK2ARY): for OpenSSL 1.0.
-	  patched by Jeroen van Meeuwen at [ruby-core:25210]
-	  fixed by Nobuyoshi Nakada [ruby-core:25238],
-	  Hongli Lai [ruby-core:27417],
-	  and Motohiro KOSAKI [ruby-core:28063]
-
-	* ext/openssl/ossl_pkcs7.c (pkcs7_get_certs, pkcs7_get_crls):
-	  split pkcs7_get_certs_or_crls.
-
-Sun Feb 28 11:42:55 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/openssl/{test_x509cert.rb,openssl,test_x509crl.rb,
-	  test_x509req.rb}:
-	  fix false positive tests because of OpenSSL spec change.
-	  patched by originally Hongli Lai [ruby-core:27417],
-	  and fixed by Motohiro KOSAKI [ruby-core:28063]
-
-Sun Feb 28 11:21:03 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/openssl/{test_x509cert.rb,openssl,test_x509req.rb}:
-	  remove false positive tests because of OpenSSL spec change.
-	  patched by Motohiro KOSAKI [ruby-core:28063]
-	  see also [ruby-dev:40077]
-
-Sun Feb 28 11:25:16 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (pack_pack): generalized integer packer implemented.
-	  (pack_unpack): generalized integer unpacker implemented.
-
-Sun Feb 28 06:58:53 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (swap32): use __builtin_bswap32 on gcc 4.3.0 or later.
-	  (swap64): ditto.
-
-Sun Feb 28 00:38:18 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c: use integer types with explicit size.
-
-Sat Feb 27 15:54:55 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c: check assumption on QUAD_SIZE and SIZEOF_LONG.
-
-	* bignum.c: check assumption on SIZEOF_LONG and SIZEOF_BDIGITS.
-
-Sat Feb 27 03:48:18 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c: fix q and Q for big endian environments which have no
-	  8 bytes integer type.
-	  (pack_pack): use rb_big_pack.
-	  (pack_unpack): use rb_big_unpack.
-
-	* include/ruby/intern.h (rb_big_pack): declared.
-	  (rb_big_unpack): ditto.
-
-	* bignum.c (rb_big_pack): new function.
-	  (rb_big_unpack): ditto.
-
-Fri Feb 26 21:36:51 2010  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c: fix rb_quad_pack and rb_quad_unpack for environments
-	  which don't have 8bytes integer type.  This still depends on little
-	  endian.
-	  (rb_quad_pack): use quad_buf_complement.  don't raise for large
-	  values.
-	  (rb_quad_unpack): use quad_buf_complement.
-	  (quad_buf_complement): new function extracted from rb_quad_pack.
-	  add one after bitwise negation.
-
-Fri Feb 26 21:29:48 2010  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (RSHIFT): add parenthesis to suppress warning.
-
-Fri Feb 26 20:51:47 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/socket/raddrinfo.c, ext/socket/udpsocket.c: avoid illegal cast
-	  from void-returning function to VALUE-returning one.  It causes SEGV
-	  on RubySpec with mingw32.
-
-Fri Feb 26 20:07:48 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (QUAD_SIZE): it should be always 8.
-
-	* bignum.c (rb_quad_pack): use LONG_LONG version only if
-	  SIZEOF_LONG_LONG == QUAD_SIZE.
-
-Fri Feb 26 16:49:29 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (swap64): fix for VC6.
-
-Fri Feb 26 14:17:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_pack, pack_unpack): suppressed warnings.
-
-Fri Feb 26 07:44:51 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/dl: revert dl with libffi because it can't run on mswin now.
-
-Thu Feb 25 22:59:46 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c: consider DYNAMIC_ENDIAN.  refactored.
-
-Thu Feb 25 11:17:01 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* rational.c (nurat_expt): use Float#** when Rational ** Float.
-	  This fixes Rational(3,1)**3.0=>26.99999999999999 on FreeBSD.
-
-	* complex.c (rb_fexpt): removed.
-	  Note that this function is not static but is private.
-
-Thu Feb 25 00:43:57 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def: Change the operand type of setinlinecache
-	  (OFFSET to IC).  This IC must be same as corresponding
-	  getinlinecache instruction's IC operand.
-	  This change is for a little performance improvement
-	  (getting IC directly) and is for the AOT compilation development.
-
-	* compile.c, iseq.c, insns.def: Change the approach to handling inline
-	  cache (IC) type operand to enable the above change.
-	  This change also affects ISeq#to_a method.  The inline cache operand
-	  will be dumped by fixnum, the index of inline cache, in other words,
-	  inline cache identity.
-
-	* template/insns_info.inc.tmpl, tool/instruction.rb: No need to count
-	  inline cache size (insn_iclen()).
-
-Thu Feb 25 00:57:59 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (swap64): don't redefine.
-
-Thu Feb 25 00:29:55 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (pack_unpack): don't use OFF32 for gcc 4.5.
-
-Wed Feb 24 22:39:15 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb: fix [ruby-core:28320] reported by Paul Clegg.
-	  (Resolv::DNS::Requester#request): raise ResolvTimeout
-	  consistently for timeout.
-
-Wed Feb 24 14:38:16 2010  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/indexer: Removed obsolete files.
-
-Wed Feb 24 11:52:05 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (translit_separator): moved back from load.c again.
-
-	* dln_find.c: split from dln.c.
-
-Wed Feb 24 09:31:33 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/extconf.rb: use OpenSSL only when all transform
-	  functions are available.
-
-Wed Feb 24 00:39:17 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (str_new_empty): String#split, partition, rpartition
-	  taints the resulting strings if self is tainted.
-
-Mon Feb 22 21:35:33 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/digest/sha2/sha2init.c: test OpenSSL more strictly.
-
-Mon Feb 22 11:52:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems: update to 1.3.6.
-
-Mon Feb 22 11:21:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/sha2: Use OpenSSL's SHA1 engine if available.
-
-Sun Feb 21 21:20:17 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile, install_files): honor srcprefix
-	  argument if given.  [ruby-dev:40449]
-
-Sun Feb 21 13:29:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems/rubygems_version.rb: outdated.  [ruby-core:28275]
-
-Sun Feb 21 06:24:12 2010  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/setup (config.h): HAVE_STRUCT_TIMEZONE, VOID_UNSETENV, and RUBY_LIB_VERSION_STYLE defined.
-	* symbian/setup (ruby.mmp): SOURCE node.c added.
-
-Mon Feb 22 09:15:45 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_mark_children): lost comment added.
-
-Sat Feb 20 14:42:19 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_object0): should prepare placeholder before
-	  processing instance variables.  [ruby-dev:40414]
-
-	* marshal.c (id2encidx): no longer need arg.
-
-Sat Feb 20 14:36:16 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm.c (vm_backtrace_each): use called_id when method definition
-	  structure is already freed.  [ruby-dev:40234] [ruby-core:27959]
-
-Fri Feb 19 00:04:19 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/drb/drb.rb (DRbServer#stop_service): join killed thread to
-	  ensure service stops.  [ruby-dev:40441]
-
-Thu Feb 18 22:31:15 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* math.c (math_atanh): raise ERANGE without calling atanh if absolute
-	  value is 1 to achieve platform-independent math.  [ruby-core:28219]
-
-	* math.c (math_lgamma): return [Infinity, 1] without calling lgamma_r
-	  if argument is infinity or -infinity.  [ruby-core:28219]
-
-Thu Feb 18 22:28:00 2010  Kenta Murata  <mrkn@mrkn.jp>
-
-	* configure.in: new --with-ext and --with-out-ext options for extmk.
-	* tool/mkconfig.rb: normalizing --with-out-ext to --without-ext.
-
-Thu Feb 18 21:50:00 2010  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (pack_unpack): call PACK_ITEM_ADJUST for 'Q'.
-
-Thu Feb 18 02:14:26 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (io_fread, io_getpartial, io_read, io_sysread): by using lock,
-	  prohibit modification of buffer string during read (which had caused
-	  EFAULT or SEGV).  [ruby-dev:40437]
-
-	* test/ruby/test_io.rb: rewrite tests for the old behavior.
-
-Wed Feb 17 21:34:01 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regcomp.c (setup_tree, onig_compile): optimize .* at last by
-	  converting into (?>.*), which does not backtrack.  [ruby-core:27791]
-
-	* test/ruby/test_regexp.rb: add a test for above.
-
-Wed Feb 17 21:26:53 2010  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_normal_exit): add :timeout option.
-
-Wed Feb 17 17:05:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_cfunc): removed unused variable.
-
-	* vm.c (vm_frametype_name): define only when VMDEBUG.
-
-Wed Feb 17 15:34:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/dl_conversions.c (rb_dl_type_to_ffi_type): support signed
-	  long long.
-
-	* ext/dl/cfunc.c (rb_dlcfunc_inspect): get rid of overflow.
-
-	* ext/dl/closure.c (dlc_callback, rb_dlclosure_init): ditto.
-
-	* ext/dl/cptr.c (rb_dlptr_s_malloc): ditto.
-
-	* ext/dl/method.c (rb_dlfunction_initialize): ditto.
-
-Wed Feb 17 01:16:12 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* hash.c (hash_update): always raise an exception when adding a new
-	  key during iteration.  Traditionally, an exception was raised only
-	  when rehash occurs, but it may lead to difficult bug to reproduce.
-	  [ruby-core:23614]
-
-Tue Feb 16 22:09:27 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gc.c (chain_finalized_object): fix precedence.
-
-Tue Feb 16 21:32:01 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gc.c (rb_objspace_call_finalizer): always run finalizer at exit,
-	  before object is free'd.  [ruby-dev:40382]
-
-Tue Feb 16 20:56:39 2010  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (rb_group_member): renamed from group_member.
-	  don't use group_member() in glibc because it's not valgrind clean.
-	  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=570047
-
-Tue Feb 16 19:19:21 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_call): convert signed value to
-	  unsigned.
-
-Tue Feb 16 19:02:59 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/dl/test_{base,handle}.rb: use more verbose assertions.
-
-	* test/dl/test_import.rb (DL::LIBC::BoundQsortCallback): renamed
-	  to get rid of overwriting warning.
-
-Tue Feb 16 11:03:19 2010  Aaron Patterson  <aaron@tenderlovemaking.com>
-
-	* ext/dl/method.c: Adding DL::Method as a superclass for DL::Function
-
-Mon Feb 15 23:37:30 2010  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: check lseek error by errno.  NetBSD 4.0.1 may return -1 as
-	  a file position of tty.
-
-Mon Feb 15 23:08:56 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pstore.rb (PStore#initialize): initialize @thread_safe.
-	  [ruby-core:27853]
-
-Mon Feb 15 22:45:26 2010  Tanaka Akira  <akr@fsij.org>
-
-	* st.c (st_foreach): don't access ptr->hash after func call.
-	  It may access freed area.
-
-Mon Feb 15 22:25:16 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/zlib/zlib.c (zlib_mem_alloc): suppress valgrind warnings.
-	  http://www.zlib.net/zlib_faq.html#faq36
-
-Mon Feb 15 22:18:49 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_add): propagate fixed time offset.
-
-Mon Feb 15 17:42:20 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* signal.c (USE_SIGALTSTACK): NetBSD can't use sigaltstack(2)
-	  with pthread.
-	  http://netbsd.gw.com/cgi-bin/man-cgi?sigaltstack++NetBSD-current
-
-Mon Feb 15 13:11:47 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* array.c (rb_ary_push_m): use rb_ary_modify instead of
-	  rb_ary_modify_check. This fixes regression due to r26632.
-
-Sun Feb 14 12:54:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_object0): removed duplicated entry for regexp.
-	  [ruby-dev:40416]
-
-Sun Feb 14 04:45:31 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_object0): register regexp object before encoding
-	  name.  [ruby-dev:40414]
-
-	* re.c (rb_reg_alloc, rb_reg_init_str): split from rb_reg_new_str.
-
-Sat Feb 13 17:07:20 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_delete): RDoc update.  a patch from Hugh Sasse.
-	  [ruby-core:28128]
-
-	* array.c (rb_ary_compact_bang): ditto.
-
-Sat Feb 13 15:01:24 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (id2encidx): duplicated entry for encoding name.
-	  [ruby-dev:40388]
-
-Sat Feb 13 12:17:52 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/tempfile.rb (Tempfile::Remover): new class to replace
-	  Tempfile.callback.  port r24902 from Ruby 1.8.
-
-Fri Feb 12 17:55:21 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (thread_free): fixed typo.
-
-Fri Feb 12 02:27:39 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#initialize, Set#replace, Set#merge)
-	  (Set#subtract, Set#&): Fix duck type tests. [ruby-core:28078]
-
-	* lib/set.rb (Set#initialize, Set#replace, Set#merge)
-	  (Set#subtract, Set#&): Try #each if #each_entry fails.
-
-Thu Feb 11 20:43:00 2010  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_oflags_modestr): return "r" for O_RDONLY|O_APPEND.
-	  [ruby-dev:40379]
-
-Thu Feb 11 19:19:21 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* missing/alloca.c: s/RUBY_LIB/RUBY_LIB_PREFIX/ [ruby-dev:40395]
-
-Thu Feb 11 17:52:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_exec): reset thread state before restarting vm loop
-	  from catch scope.  [ruby-core:28129], [ruby-core:28143]
-
-Thu Feb 11 14:43:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_object0): read sequentially since marshal source
-	  may not be possible to rewind.  [ruby-dev:40386]
-
-	* marshal.c (r_object0): replace non-1.8 escapes directly.
-
-Thu Feb 11 09:49:31 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb: fix [ruby-core:28144] reported by Hans de Graaff.
-	  (Resolv::DNS#make_requester): pass nameserver_port to
-	  UnconnectedUDP.new.
-	  (Resolv::DNS.bind_random_port): change the is_ipv6 argument to
-	  bind_host.
-	  (Resolv::DNS::Requester#initialize): change instance variable to
-	  store multiple sockets.
-	  (Resolv::DNS::Requester#request): pass readable sockets to
-	  recv_reply.
-	  (Resolv::DNS::Requester#close): close all sockets.
-	  (Resolv::DNS::Requester::UnconnectedUDP#initialize): allocate
-	  a socket for each address family of name servers.
-	  (Resolv::DNS::Requester::UnconnectedUDP#recv_reply): read from the
-	  passwd readable socket.
-	  (Resolv::DNS::Requester::UnconnectedUDP#sender): use appropriate
-	  socket for the target nameserver.
-	  (Resolv::DNS::Requester::ConnectedUDP): follow the instance variable
-	  change.
-	  (Resolv::DNS::Requester::TCP#sender): ditto.
-	  (Resolv::DNS::Config#nameserver_port): new method.
-
-Thu Feb 11 01:45:04 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (vm_exec): temporarily revert r26628, which causes SEGV when
-	  executing rubyspec.
-
-Wed Feb 10 16:31:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_push_m, rb_ary_unshift_m, rb_ary_aset),
-	  (rb_ary_insert, rb_ary_replace, rb_ary_concat),
-	  (rb_ary_uniq_bang, rb_ary_flatten_bang): check if frozen after
-	  wrong number of arguments but before TypeError.
-	  [ruby-core:28140]
-
-	* hash.c (rb_hash_replace): ditto.
-
-	* string.c (rb_str_replace): ditto.
-
-Wed Feb 10 04:06:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_exec): reset thread state before starting vm loop.
-	  [ruby-core:28129]
-
-Tue Feb  9 23:48:25 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_divide): fix precision too.
-
-Tue Feb  9 23:26:07 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_DoDivmod): fix precision.
-	  [ruby-core:17472][ruby-dev:35372][ruby-dev:40105][ruby-dev:40358]
-
-Tue Feb  9 22:23:27 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (READ_CHECK): do not select fd before reading, that had made
-	  TCPServer#gets stuck.  [ruby-dev:40317]
-
-Tue Feb  9 21:27:38 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rexml/text.rb (REXML::Text#initialize): REXML::Text.new checks
-	  raw text for illegal characters without entity check, for the sake
-	  of 1.8 compatibility.  This had caused rubyspec error.
-
-Mon Feb  8 23:49:24 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_getline_fast): wrong calculation of new position
-	  from rb_str_coderange_scan_restartable().  [ruby-core:28103]
-
-	* io.c (read_all): ditto.
-
-	* sprintf.c (rb_str_format): ditto.
-
-Mon Feb  8 21:03:53 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (socket_s_ip_address_list): obtain the scope_id
-	  of IPv6 link local address on OpenSolaris.
-
-Mon Feb  8 16:27:57 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dmyversion.c: empty load path in miniruby.
-
-	* common.mk (COMPILE_PRELUDE): rbconfig is loaded on demand.
-
-	* tool/eval.rb, win32/{mkexports,resource}.rb: miniruby no longer
-	  contains "." in $:.
-
-Mon Feb  8 15:15:07 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_clone): call initialize_clone hook method to
-	  call initialize_copy.
-
-	* object.c (rb_obj_dup): call initialize_dup hook.
-
-	* lib/delegate.rb (Delegator#initialize_clone): use new hook to
-	  implement deep copy.  [ruby-dev:40242]
-
-	* lib/delegate.rb (Delegator#initialize_dup): ditto.
-
-	* test/test_delegate.rb (TestDelegateClass#test_copy_frozen): add
-	  a test to ensure #clone copies frozen status.
-
-Mon Feb  8 10:28:58 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: check pthread_attr_getstack to prevent obsolete
-	  warning for pthread_attr_getstackaddr.
-
-Sun Feb  7 23:12:34 2010  Tanaka Akira  <akr@fsij.org>
-
-	* sample/test.rb: sort files for syntax validation.
-
-Sun Feb  7 23:08:53 2010  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb: sort test files.
-
-Sun Feb  7 12:53:12 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/rake.rb (Rake::FileList::ARRAY_METHODS): fix test failure by <=>
-	  definition at Kernel.
-
-Sun Feb  7 03:01:46 2010  Tanaka Akira  <akr@fsij.org>
-
-	* math.c (math_lgamma): initialize sign because
-	  lgamma(NaN) doesn't set the sign in OpenSolaris.
-
-Sun Feb  7 00:23:21 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* class.c (rb_class_init_copy): raise a TypeError if the argument is
-	  BasicObject.  [ruby-core:27060]
-
-Sat Feb  6 23:37:11 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (initialize): set @sock to a NullSocket instance to
-	  raise FTPConnectionError when not connected.   [ruby-dev:40258]
-
-Sat Feb  6 23:25:57 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/curses/view2.rb: replaced with Hugh Sasse's version.
-	  [ruby-core:27894]
-
-Sat Feb  6 22:57:00 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (receive_responses): does not hang when an
-	  unexpected BYE response received.  fixed [ruby-core:27944].
-	  Thanks, Bob Potter.
-
-Sat Feb  6 21:31:23 2010  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/monitor.rb (wait): supported timeout.
-
-	* test/net/imap/test_imap.rb (test_exception_during_idle): use timeout.
-
-Sat Feb  6 19:35:16 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* tool/compile_prelude.rb: fix require path.
-
-Sat Feb  6 12:02:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator#method_missing),
-	  (Delegator.delegating_block): don't hide backtrace from
-	  __getobj__ and reduced exception messages when $DEBUG.
-
-Sat Feb  6 11:35:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/ipsocket.c (ip_addr, ip_peeraddr),
-	  ext/socket/socket.c (sock_s_getaddrinfo): added optional
-	  reverse_lookup flag.  [ruby-core:28007]
-
-Sat Feb  6 01:55:02 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/stringio/stringio.c (strio_ungetc): pads with \000 when the
-	  current position is after the end.  [ruby-dev:40271]
-
-Sat Feb  6 01:14:54 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/purelib.rb, common.mk: to simulate ruby command more precisely,
-	  remove "." from $: of virtual environment for build and test.
-
-Sat Feb  6 00:02:31 2010  Tanaka Akira  <akr@fsij.org>
-
-	* random.c (fill_random_seed): don't use O_NOFOLLOW because
-	  /dev/urandom is a symlink in OpenSolaris.
-
-	* lib/securerandom.rb (SecureRandom.random_bytes): ditto.
-
-Fri Feb  5 16:38:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator): include copy of Kernel.
-	  [ruby-dev:40314]
-
-	* lib/delegate.rb (Delegator#{dup,clone}): class of copy should be
-	  Delegator.  [ruby-dev:40313]
-
-Fri Feb  5 09:26:54 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* bignum.c (big_op): remove unused variables.
-
-Fri Feb  5 02:06:57 2010  Aaron Patterson  <tenderlove@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb: Struct members are emitted without a leading
-	  colon.  Thanks Yusuke Endoh! [ruby-core:28052]
-
-	* test/yaml/test_struct.rb: fixed tests to go with Struct changes
-
-	* test/yaml/test_yaml.rb: fixed tests to go with Struct changes
-
-Fri Feb  5 00:34:24 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (big_gt, big_ge, big_lt, big_ge): added Bignum#>, >=, < and
-	  <= to allow to compare with BigDecimal.  [ruby-dev:40167]
-
-Thu Feb  4 15:47:27 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* thread_pthread.c (native_thread_init_stack): use get_stack.
-	  patched by KOSAKI Motohiro [ruby-dev:40309]
-
-	* thread_pthread.c (ruby_init_stack): use get_stack
-	  on platforms which have pthread_attr_get_np.
-	  (FreeBSD, DragonFlyBSD and NetBSD)
-	  This is because FreeBSD and DragonFly BSD must use
-	  pthread_attr_get_np to get stack size of main thread,
-	  but Mac OS X and Linux with LinuxThreads must use getrlimit.
-	  <http://www.nminoru.jp/~nminoru/programming/stackoverflow_handling.html>
-	  <http://d.hatena.ne.jp/nurse/20100204>
-
-Thu Feb  4 09:55:38 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: FreeBSD, DragonFly BSD and OpenBSD needs
-	  pthread_np.h to use pthread_*_np functions.
-	  OpenBSD's pthread_*_np also depend sys/signal.h,
-	  but it is included at signal.h via vm_core.h via thread.c.
-
-Thu Feb  4 08:15:53 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator): now inherits BasicObject.
-	  [ruby-dev:39154], [Bug #2679], [ruby-dev:40242]
-
-Thu Feb  4 03:00:59 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_DoDivmod): get red of
-	  floating point exception.
-
-Thu Feb  4 01:24:01 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_DoDivmod): fix infinity
-	  handling.  1 / Infinity was evaluated to NaN.
-
-Thu Feb  4 00:37:43 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_mdump, time_mload): dump/load utc_offset.
-	  [ruby-dev:40063]
-
-Wed Feb  3 22:22:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check for non-portable stack attribute functions.
-
-Wed Feb  3 20:10:52 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/iconv/charset_alias.rb: pass block argument to outer local
-	  variable.
-
-Wed Feb  3 20:08:05 2010  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (realpath_rec): rb_path_last_separator may return NULL.
-
-Wed Feb  3 13:15:24 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* thread_pthread.c: DragonFlyBSD is also the same as FreeBSD
-	  on getting the stack size of the main thread.
-
-Wed Feb  3 12:30:10 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* thread_pthread.c (ruby_init_stack): use pthread_get_attr_np
-	  to get the stack size of the main thread on FreeBSD.
-
-	* thread_pthread.c: include pthread_np.h on FreeBSD.
-
-Wed Feb  3 11:38:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/{closure,function}.c: removed C99 features and warnings.
-
-Wed Feb  3 10:12:09 2010  Aaron Patterson  <tenderlove@ruby-lang.org>
-
-	* ext/dl/function.c: DL::Function now uses libffi
-
-	* ext/dl/cfunc.c (rb_dl_set_last_error): set to non static so errors
-	  can be exposed.
-
-	* ext/dl/closure.c: DL::Closure will now be used in place of
-	  ext/dl/callback/*.
-
-	* ext/dl/dl.c: legacy callbacks removed in favor of libffi
-
-	* ext/dl/dl_conversions.(c,h): used for converting ruby types to FFI
-	  types.
-
-	* ext/dl/callback/*: replaced by libffi callbacks.
-
-	* ext/dl/lib/dl/callback.rb: Converting internal callbacks to use
-	  DL::Closure
-
-	* ext/dl/lib/dl/closure.rb: Ruby parts of the new DL::Closure object
-
-	* ext/dl/lib/dl/import.rb: More conversion to use DL::Closure object
-
-	* ext/dl/lib/dl/value.rb (ruby2ffi): adding private method for
-	  DL::CPtr to ffi value conversion.
-
-Tue Feb  2 18:15:12 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c: turn on do_not_reverse_lookup by default,
-	  which has been reverted in r9880 probably unintentionally,
-	  according to matz.  [ruby-core:24530]
-
-Tue Feb  2 14:46:06 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c: move implementation of each_slice, each_cons,
-	  each_with_object to enum.c.
-
-	* enum.c (each_slice_i): convert multiple values from yield into
-	  an array.
-
-	* enum.c (each_cons_i): ditto.
-
-	* enum.c (each_with_object_i): ditto.
-
-Tue Feb  2 14:30:27 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_each_entry): new method #each_entry to pack values
-	  from yield into an array.
-
-	* lib/set.rb (Set#merge): use Enumerable#each_entry to implement
-	  Set compatible to 1.8 behavior.  [ruby-core:27985]
-
-	* lib/set.rb: replace is_a?(Enumerable) with respond_to?(:each)
-	  for duck typing.
-
-	* lib/set.rb (SortedSet#add): typo fixed.
-
-Tue Feb  2 11:13:56 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator#marshal_dump): exclude
-	  delegator-specific instance variables.
-
-Mon Feb  1 21:26:41 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/matrix.rb (Vector#each2): returns a self.  [ruby-dev:40241]
-
-Mon Feb  1 17:08:42 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_minus): RDoc update.  a patch from red stun
-	  in [ruby-core:27951]
-
-Mon Feb  1 07:36:33 2010  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tkutil/tkutil.c: fix SEGV on TkUtil::CallbackSubst._setup_subst_table.
-
-	* ext/tk/lib/tk.rb: [ruby1.9] fix freeze at exit.
-
-	* ext/tk/lib/tk.rb: [POTENTIAL INCOMPATIBLE] return NoMethodError
-	  for TkWindow#to_ary and to_str.
-
-	* ext/tk/lib/tkextlib/tcllib/plotchart.rb: wrong arguments.
-
-	* ext/tk/sample/tkballoonhelp.rb: fail to support TkEntry widgets.
-
-Sun Jan 31 23:20:43 2010  wanabe  <s.wanabe@gmail.com>
-
-	* io.c (rb_io_each_codepoint): use cbuf when needs readconv.
-
-Sun Jan 31 23:07:23 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_dir.rb: use string instead of symbol as file name.
-
-Sun Jan 31 22:41:33 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_string_value): fix the previous commit.
-
-Sun Jan 31 21:43:35 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_string_value): make no exception for Symbol.
-	  [ruby-dev:40274]
-
-Sun Jan 31 21:10:15 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_insnhelper.c (vm_throw): fixed infinite loop.  [ruby-core:27969]
-
-Sun Jan 31 21:29:58 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rexml/text.rb (REXML::Text#initialize): do Text.check only when
-	  parent is specified, since Text.check may need doctype.  partially
-	  revert r26518.
-
-Sun Jan 31 15:50:34 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rexml/text.rb (REXML::Text#initialize): fix typo and a bug that
-	  seems to be caused by refactoring.
-
-Sun Jan 31 15:46:37 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rexml/parent.rb (REXML::Parent#delete): return the deleted node
-	  because the rdoc of REXML::Element#delete_element says it returns
-	  "the element that was removed."  [REXMLTracker#161]
-
-Sun Jan 31 14:33:00 2010  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: A bug fix for deleting blank Table rows from Andy Hartford.
-
-Sun Jan 31 13:31:43 2010  wanabe  <s.wanabe@gmail.com>
-
-	* gc.c (obj_free): free rb_classext_t of eigenclass.  [Bug #1392]
-
-Sun Jan 31 13:00:14 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rexml/document.rb (REXML::Document#add): fix duplicate XMLDecls
-	  and bad DocTypes in REXML::Document.    (Bug #19058) [ruby-core:27979]
-	  based on the patch by Federico Builes.
-
-Fri Jan 29 22:49:21 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/getoptlong.rb (set_options): ensure that the type of argument is
-	  Array, restoring this check that was deleted at r10239.  This caused
-	  rubyspec error.
-
-Fri Jan 29 12:59:33 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (mingw): needs $(DEFFILE) for extension libraries.
-	  [ruby-core:27946]
-
-Fri Jan 29 11:09:49 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (try_do): log no source when no development env.
-
-	* lib/mkmf.rb (create_makefile): srcprefix always needs $(srcdir).
-
-	* lib/mkmf.rb (create_makefile): yield configuration if a block is
-	  given.
-
-Fri Jan 29 09:43:30 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/utf8_mac.trans (buf_shift_char): don't see uninitialized
-	  value. [ruby-dev:40233]
-
-Fri Jan 29 01:42:24 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator#initialize_copy): use initialize_copy
-	  instead of overriding clone/dup.  [ruby-dev:40221]
-	  it now always clones the target, it might cause incompatibility.
-
-Fri Jan 29 01:26:53 2010  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_i): update RDoc to
-	  denote that #to_i raises FloatDomainError for Inf and NaN.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_i): fast #to_i using
-	  BigDecimal_split().
-
-	* bignum.c (conv_digit): use faster ISDIGIT() assuming ASCII.
-
-Fri Jan 29 00:18:54 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/cgi.rb: set autoload to CGI::HtmlExtension.  [ruby-dev:40194]
-
-Thu Jan 28 09:44:19 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regcomp.c (onig_compile): initialize ScanEnv.
-	  mainly to initialize env->warnings_flag [ruby-dev:40196]
-
-	* regparse.c (scan_env_clear): clear warnings_flag.
-
-Wed Jan 27 23:33:21 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/matrix/test_matrix.rb, test/matrix/test_vector.rb: add some
-	  tests.
-
-Wed Jan 27 23:29:36 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/thread.rb (ConditionVariable#wait, signal, broadcast): return
-	  self (for 1.8 compatibility).
-
-Wed Jan 27 23:27:54 2010  Keiju Ishitsuka  <keiju@emperor2.pendome>
-
-	* lib/matrix.rb: add exception Matrix::ErrOperationNotImplemented
-	  [ruby-dev:40149].
-	* lib/matrix.rb: change message of exception
-	  Matrix::ErrOperationNotDefined [ruby-dev:40150], [ruby-dev:40176].
-	* lib/matrix.rb: add method Vector#/ [ruby-dev:40151].
-	* lib/matrix.rb(Matrix::Scalar#+,-,/): delete meaningless when
-	  switch. [ruby-dev:40149]
-
-Wed Jan 27 23:22:54 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* vm_dump.c (bugreport_backtrace): trivial change.
-
-	* vm_dump.c (rb_vm_bugreport): uninitialized local variable i.
-	  [ruby-dev:40169]
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_segv_test):
-	  follow above change.
-
-Wed Jan 27 23:20:52 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_exception.rb
-	  (TestException#test_thread_signal_location):
-	  change test method name.
-
-Wed Jan 27 22:48:40 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/matrix.rb (determinant): fix name error.
-
-Wed Jan 27 22:26:25 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (rb_backtrace): "circular require" warning was output to
-	  stdout except the first line.  All line is output to stderr now.
-	  [ruby-dev:40147]
-
-Wed Jan 27 00:22:20 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_DoDivmod, BigDecimal_mod,
-	  BigDecimal_divmod, BigDecimal_div2): BigDecimal#% and #div returned
-	  an array itself that was returned by #divmod.
-
-Wed Jan 27 00:19:30 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpCtoV): do not raise infinity
-	  exception for BigDecimal("0E200000000000").
-
-Tue Jan 26 21:50:31 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpCtoV): BigDecimal("0E200000000000")
-	  was Infinity, not 0.
-
-	* test/bigdecimal/test_bigdecimal.rb: add a test for above.
-
-Tue Jan 26 21:36:22 2010  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: test unsetenv returns a value.
-	  unsetenv is void in older BSDs (FreeBSD 6 and OpenBSD 4.5 at least).
-
-	* hash.c (ruby_setenv): don't use the result of unsetenv if unsetenv
-	  doesn't return a value.
-
-Tue Jan 26 21:32:03 2010  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/extconf.rb: suppress a warning.
-
-	* ext/extmk.rb: ditto.
-
-Tue Jan 26 20:23:22 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (rb_vm_invoke_proc): this function must not catch TAG_RETURN
-	  because vm_exec does.  This caused rubyspec error.  [ruby-dev:40158]
-
-Tue Jan 26 20:21:28 2010  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/eq.rb: fix circular require in drb.
-	  reported by akr. see [ruby-dev:40156] [ruby-core:27661]
-
-Tue Jan 26 19:59:17 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/zlib/zlib.c (rb_gzfile_s_wrap): add rdoc. [Bug #2656]
-	  patched by Hugh Sasse [ruby-core:27692] [ruby-core:27852]
-
-	* ext/zlib/doc/zlib.rd: removed.
-
-Tue Jan 26 16:43:34 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/strscan/strscan.c: fix rdoc. (length -> bytesize)
-	  reported by Kornelius Kalnbach. see [ruby-core:27792]
-
-Tue Jan 26 07:06:05 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/matrix.rb: suppress warnings.
-
-Tue Jan 26 03:16:45 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c, vm_core.h, eval.c: because rb_protect must not be jumped by
-	  callcc, revert r26407.  And rename trap_tag to protect_tag and
-	  change exception message (across trap -> across stack rewinding
-	  barrier).
-
-Mon Jan 25 23:08:10 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (do_select): wrong conditions.  [ruby-core:27753]
-
-Mon Jan 25 22:31:53 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/envutil.rb: use method_defined? instead of
-	  instance_methods.include?.
-
-Mon Jan 25 22:08:20 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c (rb_cont_call, cont_restore_1): remove trap_tag check because
-	  it seems not to make sense.  [ruby-dev:40121]
-
-	* vm_core.h, eval.c (rb_protect): ditto.
-
-Mon Jan 25 21:43:05 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/envutil.rb: fix the check if instance method `ruby' is
-	  defined or not.
-
-Mon Jan 25 21:17:32 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rubyoptions.rb (test_segv_test): add a test for
-	  bugreport trace dumper.
-
-Mon Jan 25 17:47:02 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pty/pty.c (pty_check): needs WNOHANG to poll, return $?, and
-	  call raise_from_check() with pid_t.  [ruby-dev:40141]
-
-Mon Jan 25 17:36:11 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* version.c (RUBY_LIB, RUBY_*_LIB): moved from configures.
-
-Mon Jan 25 12:11:45 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (USE_SIGALTSTACK): only when SA_SIGINFO also is
-	  available.  see [ruby-core:27768].
-
-Mon Jan 25 12:02:34 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dln.c, file.c, io.c, signal.c: add __HAIKU__.
-	  patched by Alexander von Gluck [ruby-core:27767]
-
-Mon Jan 25 11:45:47 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* math.c (domain_check): ignore errno if y is inf.
-	  r26335 is because NetBSD 5.0's asin and acos returns
-	  0.0 with errno EDOM. But it breaks Linux whose gamma returns inf
-	  with errno ERANGE on.
-
-Sun Jan 24 22:48:05 2010  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, vm.c, vm_eval.c, vm_insnhelper.c: fix issues about
-	  return and c-return trace.  This issue skips (c-)return event
-	  with global jump such as break or return.  This fix make vm invoke
-	  hooks at stack rewind timing.  fix [ruby-core:27606] [Bug #2610].
-
-	* test/ruby/test_settracefunc.rb: add a test for above.
-
-Sun Jan 24 14:21:48 2010  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_strlen_cr): increment by rb_enc_mbminlen(enc) for
-	  broken byte sequence.  [ruby-core:27748]
-	  (rb_str_inspect): ditto.
-
-Sun Jan 24 05:18:34 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): unlock all locking mutexes
-	  before clean up.  [ruby-core:26877]
-
-	* thread.c (rb_thread_atfork): no other threads to be joined.
-
-	* vm_core.h (rb_thread_lock_unlock, rb_thread_lock_destroy):
-	  new functions.
-
-	* vm.c (ruby_vm_destruct): unlock and destroy global VM lock.
-
-Sun Jan 24 00:31:39 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rdoc/parser/ruby.rb: fix typo.
-	  patched by Hal Brodigan [ruby-core:21536]
-
-Sun Jan 24 00:02:18 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rdoc/markup/to_html_crossref.rb: fix failure of the test.
-	  patched by Tomoyuki Chikanaga and nobu [ruby-core:20564]
-
-Sat Jan 23 23:27:12 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (dir_s_glob): add rdoc by Roger Pack. [ruby-core:27669]
-
-Sat Jan 23 23:12:56 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rdoc/generator/html.rb (RDoc::Generator::HTML#gen_into):
-	  make the rdoc(generating html) run faster and use less memory.
-	  patch by Tetsu Soh [ruby-core:27656]
-
-Sat Jan 23 19:54:48 2010  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE.ole_initialize,
-	  WIN32OLE.ole_uninitialize to use in win32ole.rb.
-	  You must not use these methods.
-
-	* ext/win32ole/lib/win32ole.rb: add win32ole.rb
-	  re-define Thread#initialize (fix ruby-core:27634)
-
-Sat Jan 23 00:25:19 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* sample/coverage.rb: preserve exit status.
-
-Sat Jan 23 00:21:18 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_dir.rb: get rid of debug print.
-
-	* test/ruby/test_module.rb: fixed to make test-all work.
-
-Fri Jan 22 23:54:04 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: add a test for Array#rotate, rotate!.
-
-	* test/ruby/test_dir.rb, test/ruby/test_fnmatch.rb: add some tests
-	  (for coverage of dir.c).
-
-	* test/ruby/test_enum.rb: add a test for Enumerable#minmax.
-
-	* test/ruby/test_enumerator.rb: add some tests for Enumerator#inspect,
-	  Enumerator::Generator and Yielder.
-
-	* test/ruby/test_env.rb: add a test for ENV#index.
-
-	* test/ruby/test_exception.rb: add some tests (for coverage of
-	  error.c).
-
-	* test/ruby/test_hash.rb: add a test for recursive check.
-
-	* test/ruby/test_integer.rb: add a test for number of argument of
-	  Integer.
-
-	* test/ruby/test_method.rb: add a test for define_method.
-
-	* test/ruby/test_module.rb: add a test for constant of included
-	  module.
-
-	* test/ruby/test_proc.rb: add a test for parameters with cfunc.
-
-Fri Jan 22 23:50:03 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_regexp.rb, test/ruby/test_symbol.rb,
-	  test/ruby/test_variable.rb: add some tests (for coverage of
-	  compile.c).
-
-Fri Jan 22 21:05:34 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_mload): add submicro into vtm.subsecx.  [ruby-dev:40133]
-
-Fri Jan 22 14:26:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (rdoc): needs encodings and exts.
-
-Fri Jan 22 14:16:18 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: add missing comma.
-
-Fri Jan 22 01:07:16 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_bignum.rb, test/ruby/test_class.rb,
-	  test/ruby/test_defined.rb, test/ruby/test_hash.rb,
-	  test/ruby/test_primitive.rb, test/ruby/test_variable.rb: add some
-	  tests (for coverage).
-
-Fri Jan 22 01:03:28 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_require.rb (test_define_class): expect TypeError
-	  instead of NameError.  [ruby-core:27504]
-
-Thu Jan 21 15:09:35 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* configure.in: some tidy.
-
-Thu Jan 21 11:15:46 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_rotate): new methods, Array#rotate! and
-	  Array#rotate.  [ruby-dev:17194]
-
-	* array.c (rb_ary_reverse_m): copy directly.
-
-Thu Jan 21 09:38:00 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: use AS_CASE instead of when, to get rid of
-	  an unintentional substitution.
-
-Thu Jan 21 08:45:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (iseq_s_disasm): check for proc first.  based on the
-	  patch by Roger Pack in [ruby-core:27626].  [ruby-core:27227]
-
-Wed Jan 20 16:09:59 2010  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* common.mk (compile.$(OBJEXT)): dependencies lacking.
-
-	* vm_method.c (rb_add_method_cfunc): invalid initializer for C89
-
-	* compile.c (iseq_insns_unification): int might be smaller than int*
-
-Tue Jan 19 20:00:30 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::Config.default_config_hash): return an
-	  empty hash when resolv.conf is not available.  [ruby-core:27620]
-
-	* lib/resolv.rb (Resolv::DNS::Config#lazy_initialize): fixed the
-	  defaults of nameserver and port.
-
-Tue Jan 19 14:29:16 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (clean-ext): allow glob patterns.
-
-	* ext/extmk.rb: ditto.
-
-Tue Jan 19 14:19:26 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/zlib/{extconf.rb, zlib.c): crc32_combine and adler32_combine is
-	  supported on Zlib 1.2.2.1, so check them for old zlib.
-
-Tue Jan 19 09:03:37 2010  Aaron Patterson  <tenderlove@ruby-lang.org>
-
-	* ext/zlib/zlib.c: added Zlib.crc32_combine and Zlib.adler32_combine
-
-	* test/zlib/test_zlib.rb: corresponding tests [ruby-core:27551]
-
-Tue Jan 19 02:02:32 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: add some tests (for coverage).
-
-	* test/ruby/test_bignum.rb: ditto.
-
-Tue Jan 19 01:57:12 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_bignum.rb: some coerce definitions (for test) was
-	  wrong.
-
-Tue Jan 19 01:53:11 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (bigsub_int): remove nonsense loop.
-
-Tue Jan 19 01:42:36 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (top_compstmt, top_stmts, top_stmt): prohibit BEGIN {} in
-	  non-toplevel scope.  [ruby-core:21657]
-
-	* test/ruby/test_beginendblock.rb (test_begininclass): add a test for
-	  above.
-
-Mon Jan 18 17:16:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/webrick/httpservlet/filehandler.rb (make_partial_content):
-	  add bytes-unit.  [ruby-dev:40030]
-
-Mon Jan 18 15:49:42 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTPHeader#{content_range,range_length}):
-	  use inclusive range same as the header representation.
-
-Mon Jan 18 03:59:57 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_instance_hexdigest_bang): Fix
-	  rdoc.
-
-	* ext/digest/lib/digest.rb (Digest::Class.base64digest)
-	  (Digest::Instance#base64digest{,!}): New methods.
-
-Sun Jan 17 22:48:44 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_instance_digest)
-	  (rb_digest_instance_hexdigest): Save a method call of reset()
-	  for a disposable clone.
-
-Sun Jan 17 19:24:25 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* math.c (domain_check): check errno first.
-	  NetBSD 5.0's asin and acos returns 0.0 with errno EDOM.
-
-Sun Jan 17 14:24:35 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (rb_str_derive): use long.
-
-	* ext/iconv/iconv.c (iconv_convert): suppress a warning.
-
-	* lib/mkmf.rb (check_signedness): new method.
-
-	* lib/mkmf.rb (have_header, create_header): use String#tr_cpp.
-
-Thu Jan 14 13:06:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_hash, int_chr): fixed type.
-
-Thu Jan 14 12:50:37 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_concat): fixed range check for Fixnum, and
-	  added checks for integer overflow and invalid char code.
-
-Thu Jan 14 09:34:31 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_concat): raise RangeError when the argument is
-	  negative value. [ruby-core:27583]
-
-Thu Jan 14 08:49:59 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_to_r): convert to rational if internal representation
-	  is not rational.
-
-Thu Jan 14 04:01:50 2010  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_mdump): use nano_num and nano_den instead of subnano to
-	  avoid Rational class in marshaled data which prevent unmarshal by
-	  Ruby 1.8.
-	  (time_mload): use nano_num and nano_den.
-
-Wed Jan 13 11:57:38 2010  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* object.c (rb_class_initialize): Make sure BasicObject doesn't get
-	  initialized twice [ruby-core:27577]
-
-	* class.c (rb_class_init_copy): ditto
-
-Wed Jan 13 06:54:44 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check for if struct timezone is defined.
-
-	* missing.h (struct timezone): define if not defined.
-
-	* win32/win32.h (struct timezone): defined in the newer w32api.
-	  [ruby-core:27515]
-
-Wed Jan 13 00:33:09 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/shell/command-processor.rb: fix typo by Sho Hashimoto.
-	  reported and patched at [ruby-dev:40058] [Bug #2599]
-
-Tue Jan 12 23:48:29 2010  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb, test/rss/test_maker_0.9.rb:
-	  accept any time format in maker. [ruby-core:26923]
-
-Tue Jan 12 21:56:00 2010  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_set_len): call rb_str_modify.
-
-	* file.c (realpath_rec): don't call rb_str_modify before
-	  rb_str_set_len.
-
-Tue Jan 12 20:44:14 2010  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (realpath_internal): call rb_secure.
-
-Tue Jan 12 16:48:46 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP.start): options may not be given.
-
-Tue Jan 12 16:48:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_readline): check if instream
-	  is closed instead of fd 0.
-
-	* ext/readline/readline.c (Init_readline): use STDIN for input.
-	  Reported by Sora Harakami. See
-	  http://d.hatena.ne.jp/codnote/20100111/1263174134
-
-Tue Jan 12 16:09:02 2010  wanabe  <s.wanabe@gmail.com>
-
-	* test/ruby/test_process.rb (test_execopts_env): MANDATORY_ENVS might
-	  not be a part of ENV.  e.g. TMPDIR.
-
-Tue Jan 12 14:07:31 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP.start): add hash argument to
-	  set ssl related options. when use_ssl is set default value
-	  of verify_mode is OpenSSL::SSL::VERIFY_PEER. [ruby-dev:40003]
-
-Tue Jan 12 14:53:07 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (init_env): use _wputenv() instead of
-	  SetEnvironmentVariableW() because latter doesn't set msvcrt's environ
-	  work area, of course.
-	  [Bug #2552]
-
-Tue Jan 12 13:33:54 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (realpath_rec): trace symbolic link only when supporting
-	  readlink().
-
-Tue Jan 12 12:49:39 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-here-doc-beg-match): fix for here-doc
-	  which ends with an underscore.
-
-Tue Jan 12 09:58:03 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* hash.c: need to include errno.h for EINVAL.
-
-	* hash.c (ruby_setenv): fixed typo.  see [ruby-dev:40026]
-
-Tue Jan 12 09:22:43 2010  Tanaka Akira  <akr@fsij.org>
-
-	* prelude.rb (require_relative): use File.realpath.  [ruby-dev:40040]
-
-	* include/ruby/intern.h: declare rb_dir_getwd.
-
-	* dir.c (rb_dir_getwd): copied from dir_s_getwd to export.
-	  (dir_s_getwd): use rb_dir_getwd.
-
-	* file.c (rb_file_s_realpath): new method File.realpath.
-	  (rb_file_s_realdirpath): new method File.realdirpath.
-
-	* lib/pathname.rb (Pathname#realpath): use File.realpath.
-	  (Pathname#realdirpath): use File.realdirpath.
-
-Mon Jan 11 22:45:08 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* hash.c (ruby_setenv): Improve the emulation of setenv(3) on
-	  environments where putenv(3) is used.  Raise EINVAL If a
-	  variable name contains an '='.
-
-Mon Jan 11 18:16:38 2010  wanabe  <s.wanabe@gmail.com>
-
-	* vm_insnhelper.h (GET_BLOCK_PTR): return 0 when in class frame.
-	  [Bug #2583]
-
-Mon Jan 11 16:52:05 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_strlen): added. [ruby-dev:40028]
-
-	* include/ruby/intern.h (rb_str_strlen): declared.
-
-Mon Jan 11 13:30:35 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/webrick/accesslog.rb (WEBrick::AccessLog#format): fixed typo.
-
-	* lib/webrick/httpstatus.rb (WEBrick::HTTPStatus::Status#initialize):
-	  accept 0 or more arguments.  [ruby-dev:40021]
-
-Mon Jan 11 12:47:58 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* hash.c (ruby_setenv): ENV.[]= should raise an error if setenv(3)
-	  or putenv(3) fails.  [ruby-dev:40023]
-
-Sun Jan 10 17:25:24 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/webrick/accesslog.rb : Escape needed.
-
-	* lib/webrick/httpstatus.rb : ditto.
-
-	* lib/webrick/httprequest.rb : ditto.
-
-	* lib/webrick/httputils.rb : ditto.
-
-	* test/webrick/test_cgi.rb (TestWEBrickCGI::test_bad_): Test for it.
-
-Sun Jan 10 04:54:36 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_define_class): raise TypeError same as class
-	  statement.  [ruby-core:27504]
-
-Sun Jan 10 04:41:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): needs ARCH_FLAG.
-
-Sat Jan  9 14:20:54 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (install-all): maybe typo.
-
-Sat Jan  9 14:01:14 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD_vfprintf): get rid of a warning of VC++ x64.
-
-Sat Jan  9 08:40:54 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/configure.bat (WIN32DIR): regularise file separators.
-
-Fri Jan  8 23:35:18 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (mnew): don't check visibility of method body if public
-	  ZSUPER method is found.  [ruby-dev:39767]
-
-	* test/ruby/test_method.rb: add a test for above.
-
-Fri Jan  8 22:59:40 2010  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_method.c (rb_alias): skip ZSUPER method when searching body of
-	  source method.  [ruby-dev:39760]
-
-	* test/ruby/test_alias.rb: add a test for above.
-
-Fri Jan  8 21:15:21 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http, lib/net/https: move content from net/https to
-	  net/http. [ruby-dev:39986]
-
-Fri Jan  8 14:06:01 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_s_read): close the IO if an exception is raised on
-	  seeking. [ruby-core:27429]
-
-Fri Jan  8 13:12:26 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_symbol): dump no encoding for 7bit only coderange
-	  symbol.  [ruby-core:27375]
-
-Thu Jan  7 07:56:09 2010  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.5.0 r5596.
-	* test/minitest/*.rb: ditto.
-
-Tue Jan  5 19:30:53 2010  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_exception.rb: add a test. cf [ruby-dev:39116]
-
-Tue Jan  5 02:03:34 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in (DTRACE): clear this when `dtrace -l` fails.
-	  Note that current FreeBSD needs privilege to call it;
-	  so to use DTrace on FreeBSD, you should run configure as root.
-
-Mon Jan  4 21:24:18 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* gc.c: added UNLIKELY to probes for optimization.
-
-	* vm.c: ditto.
-
-	* thread.c: ditto.
-
-Mon Jan  4 09:30:54 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (TRACING_MODEL): follow yugui's previous changes.
-
-Mon Jan  4 09:30:25 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (InterlockedExchangePointer): old SDK support.
-
-Sun Jan  3 23:54:51 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* trace.h: new file. wraps tracing mechanisms.
-
-	* defs/dtrace.d: new file. defined a dtrace provider "ruby".
-
-	* include/ruby/ruby.h (LIKELY): moved from vm.c.
-	  (UNLIKELY): ditto.
-	  (OBJSETUP): probe "object-create".
-	  (RUBY_EVENT_RESCUE): new event.
-
-	* vm_exec.c (DEBUG_ENTER_INSN): embedded a probe insn-entry into it.
-	  (DEBUG_END_INSN): insn-return.
-
-	* vm.c (LIKELY): moved into ruby.h.
-	  (UNLIKELY): ditto.
-	  (Init_BareVM): embedded a probe "raise" into it.
-
-	* variable.c (rb_class2name_without_alloc): new utility function.
-
-	* tool/rbinstall.rb (install?(:ext, :arch, :'ext-arch')): installs
-	  dtrace.d if necessary.
-
-	* thread_pthread.c (add_signal_thread_list): probe "raise".
-	  (rb_thread_create_timer_thread): ditto.
-
-	* thread.c (rb_thread_schedule_rec): probes "thread-enter" and
-	  "thread-leave",
-	  (thread_start_func_2): ditto.
-	  (thread_cleanup_func): probe "thread-term"
-
-	* lib/mkmf.rb: supports dtrace postprocessor on making an extension.
-
-	* iseq.c (rb_vm_insn_name): new utility function.
-	  (rb_vm_insn_len): ditto.
-
-	* insns.def (hook): probes "method-entry", "method-return", "line",
-	  and "rescue".
-
-	* compile.c (iseq_compile_each): adds a trace op for "rescue" probe.
-
-	* gc.c (garbage_collect): probes "gc-begin" and "gc-end".
-	  (obj_free): probe "object-free"
-	  (garbage_collect_with_gvl): probe "raise"
-	  (negative_size_allocation_error): ditto.
-	  (rb_memerror): ditto.
-
-	* eval.c (rb_rescue2): probe "rescue"
-	  (rb_longjmp): probe "raise"
-
-	* ext/probe/probe.c: new extension for application defined probes.
-
-	* ext/probe/extconf.rb: ditto.
-
-	* configure.in (--with-tracing-model): new option to choose a tracing
-	  mechanism.
-	  (DTRACE): new substitution. name of dtrace(1).
-	  (RUBY_TRACING_MODEL): new substitution.
-	  (DTRACE_OBJ): ditto.
-	  (MINIDTRACE_OBJ): ditto.
-	  (GOLFDTRACE_OBJ): ditto.
-	  (LIBRUBY_DTRACE_OBJ): ditto.
-	  (RUBY_DTRACE_POSTPROCESS): new macro. checks whether the dtrace on
-	  the system needs postprocessing.
-	  (RUBY_DTRACE_BSD_BROKEN): new macro. checks whether the dtrace
-	  supports USDT.
-
-	* Makefile.in:
-	  (DTRACE): new variable. name of dtrace(1).
-	  (TRACING_MODEL): new variable. name of the chosen tracing mechanism.
-	  (DTRACE_OBJ): same as the one in configure.in.
-	  (MINIDTRACE_OBJ): ditto.
-	  (GOLFDTRACE_OBJ): ditto.
-	  (LIBRUBY_DTRACE_OBJ): ditto.
-	  (CPPOUTFILE): new substitution. necessary for generating dtrace.d
-	  (trace_none.h): new target for TRACING_MODEL=none
-	  (RUBY_H_INCLUDES): appended a header for tracing.
-	  (distclean-local): also removes preprocessed version of dtrace.d
-	  ($(LIBRUBY_A)): needs $(LIBRUBY_DTRACE_OBJ) if dtrace needs
-	  postprocessing.
-	  ($(PROGRAM)): ditto.
-	  (golf): ditto.
-	  (miniruby): ditto.
-	  ($(arch_hdrdir)/ruby/dtrace.d): new target. preprocessed version
-	  of defs/dtrace.d. generated if necessary.
-	  ($(arch_hdrdir)/ruby/trace_dtrace.h): new target.
-	  definition of probes.
-	  ($(LIBRUBY_DTRACE_OBJ)): new target. generated if dtrace needs
-	  postprocessing.
-	  ($(DTRACE_OBJ)): ditto.
-	  ($(MINIDTRACE_OBJ)): ditto.
-	  ($(GOLFDTRACE_OBJ)): ditto.
-
-Sun Jan  3 15:34:19 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/rexml/text.rb: String no longer has #each.
-	  Patch by Mitsutaka Mimura (takkanm). [ruby-dev:39949].
-
-Sun Jan  3 01:29:18 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS::Message::MessageDecoder#inspect):
-	  implemented.
-
-Sat Jan  2 15:57:54 2010  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS#initialize): new option :nameserver_port.
-	  (Resolv::DNS#each_resource): pass port number.
-	  (Resolv::DNS#make_requester): ditto.
-	  (Resolv::DNS::Config#lazy_initialize): initialize @nameserver_port
-	  instead of @nameserver.
-	  (Resolv::DNS::Config#single?): return port number addition to the
-	  nameserver.
-	  (Resolv::DNS::Config#generate_timeouts): use @nameserver_port.
-	  (Resolv::DNS::Config#resolv): yield port number.
-
-Sat Jan  2 00:43:22 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (initialize_regexp): allow leading
-	  and trailing white space, and forbid extra characters
-	  on another lines. [ruby-core:26223]
-	  RFC 3986  Appendix C.  Delimiting a URI in Context
-	  draft-duerst-iri-bis-07  7.2.  Web Address processing
-
-Fri Jan  1 23:17:49 2010  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI#normalize!): normalize case of
-	  scheme. [ruby-core:27309]
-
-Fri Jan  1 00:47:57 2010  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_instance_method_unimpl): Suppress
-	  compiler warnings.
-
-Fri Jan  1 00:00:00 2010  Tanaka Akira  <akr@fsij.org>
-
-	* tool/mkconfig.rb: generate RbConfig.ruby in rbconfig.rb.
-
-	* lib/webrick/httpservlet/cgihandler.rb: use RbConfig.ruby.
-
-	* test/ruby/envutil.rb: ditto.
-
-	* benchmark/report.rb: ditto.
-
-	* benchmark/runc.rb: ditto.
-
-	* tool/eval.rb: ditto.
-
-Thu Dec 31 18:18:55 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/rubysocket.h: include addrinfo.h only when using our own
-	  getaddrinfo.c.
-
-Thu Dec 31 14:20:11 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (save_redirect_fd): consider EBADF that the fd is not used.
-	  [ruby-dev:39938]
-
-Thu Dec 31 06:03:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_type): typed.
-
-	* ext/socket/extconf.rb: fix for wide-getaddrinfo option.
-
-	* ext/socket/addrinfo.c: rename {addr,name}info functions to ensure
-	  those are used on darwin.
-
-Thu Dec 31 03:27:53 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (native_thread_destroy): decreased the probability of
-	  using the interrupt event in the thread termination.
-	  see [ruby-core:27199].
-
-Thu Dec 31 02:35:57 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (w32_error): should report the function.
-
-Thu Dec 31 01:58:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: fix for extstatic.
-
-Wed Dec 30 19:43:00 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/ruby.h (RREGEXP_SRC_END): added.
-
-Wed Dec 30 19:40:00 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/defines.h (INFINITY): this is float.
-
-	* include/ruby/defines.h (NAN): ditto.
-
-	* numeric.c (rb_infinity): change content as float.
-
-	* numeric.c (rb_nan): ditto.
-
-Wed Dec 30 17:59:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gem_prelude.rb (push_all_highest_version_gems_on_load_path):
-	  simplified.
-
-	* lib/rubygems/command_manager.rb (Gem#load_and_instantiate):
-	  rescue only NameError from const_get.
-
-	* lib/rubygems/source_index.rb (Gem#load_specification): don't use
-	  RUBY_VERSION to branch.
-
-	* lib/rubygems/validator.rb (Gem::TestRunner, Gem#alien): ditto.
-
-	* lib/rubygems.rb: Kernel#gem is already defined, and workaround
-	  for home directory and custom_require are no longer needed.
-
-Tue Dec 29 16:03:33 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* numeric.c (Init_Numeric): Add Float::INFINITY and Float::NAN.
-	  [ruby-dev:1657] [ruby-dev:4760] [ruby-list:7023]
-	  [ruby-list:46690]
-	  [ruby-core:26632] [ruby-talk:41352] [ruby-talk:203333]
-
-	* include/ruby/defines.h (INFINITY): defined.
-
-	* include/ruby/defines.h (NAN): defined.
-
-	* include/ruby/util.h (ruby_div0): removed.
-
-	* numeric.c (fix_pow): use INFINITY and NAN
-	  instead of ruby_div0(1.0).
-
-	* marshal.c (r_object0): ditto.
-
-	* bignum.c (big_fdiv): ditto.
-
-Tue Dec 29 10:36:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rexml/parsers/baseparser.rb (REXML::Parsers::BaseParser::STANDALONE):
-	  any number spaces can be placed between equal-sign and the value.
-	  patch from Ed Howland in [ruby-core:27345].
-
-Mon Dec 28 22:33:58 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): force to inherit standard I/O handles.
-	  this change fixes [ruby-core:27273], but other side effects might
-	  exist.
-
-Mon Dec 28 22:00:10 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/ruby/test_marshal.rb: added tests for taintness/untrustness
-	  propagation.
-
-Mon Dec 28 18:13:26 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* sample/occur2.rb: reimplemented in modern style. [ruby-dev:39927].
-
-Mon Dec 28 17:19:37 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/install-sh: correction by Hiro Asari.
-	  https://gist.github.com/264558/58ad1cae45cde49600bbb39286af2aae23e639d5
-
-Mon Dec 28 13:18:52 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/install-sh: wrote the intention. [ruby-dev:39928]
-
-Sun Dec 27 10:45:00 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (foleparam_initialize): add foleparam_initialize
-	  to check argument of WIN32OLE_PARAM.new
-
-	* test/win32ole/test_win32ole_param.rb (test_s_new): add some assertion
-	  to test WIN32OLE_PARAM.new
-
-Sun Dec 27 09:41:54 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/rbinstall.rb (install?(:local, :comm, :bin, :'bin-comm')):
-	  Makes it vim friendly.  __END__ in a heredoc is confusing with
-	  the script end for vim.
-
-Sun Dec 27 09:13:55 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* sample/occur2.rb: have been broken. fixed for Ruby 1.9 feature.
-
-Thu Dec 24 16:32:30 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/uri/generic.rb (eql?): Check the class of the compared object.
-	  Based on a patch by Peter McLain [ruby-core:27019]
-
-Thu Dec 24 15:20:03 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regexec.c (match_at): follow enclen's change.
-
-Thu Dec 24 12:08:00 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/delegate.rb (marshal_dump/load): dump & load instance variables
-	  by default [ruby-core:24211]
-
-Thu Dec 24 10:31:50 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/object.c (rb_obj_cmp): Default <=> operator returns 0 if
-	  objects are == [ruby-core:24063]
-
-Wed Dec 23 09:12:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/cgi/test_cgi_multipart.rb (CGIMultipartTest#_prepare):
-	  always must be binary mode.  c.f. Bug#2341
-
-Thu Dec 10 09:20:58 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): undef Encoding.new because
-	  a class which is rb_undef_alloc-func-ed can't call new method.
-	  [ruby-dev:39862]
-
-	* vm.c (Init_VM): undef RubyVM.new and RubyVM::Env.new.
-
-Mon Dec 21 17:51:44 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regcomp.c (optimize_node_left): include equal on the condition of for-loop.
-	  This bug also affects original Oniguruma. [ruby-core:27247]
-
-Mon Dec 21 10:03:33 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regcomp.c (print_enc_string): follow enclen's change.
-
-	* regcomp.c (onig_print_compiled_byte_code): ditto.
-
-	* regcomp.c (onig_print_compiled_byte_code): change prototype.
-
-	* regint.c (onig_print_compiled_byte_code): comment out.
-
-Mon Dec 21 08:04:34 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* object.c: BasicObject#initialize accepts any number of arguments
-	  [ruby-core:27080]
-
-Mon Dec 21 02:45:46 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (rb_iterate): remove SEGV (retry).
-
-Sun Dec 20 23:18:23 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (rb_iterate): remove SEGV (use the original patch).
-	  [ruby-dev:39874]
-
-Sun Dec 20 21:26:05 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (rb_iterate): pass current block when the argument bl_proc
-	  is NULL.  This behavior can be used to make enumerator faster
-	  [ruby-dev:39874]
-
-	* enumerator.c (enumerator_each): pass current block directly instead
-	  of trampoline block (enumerator_each_i).
-
-	* io.c (argf_each_line, argf_each_byte, argf_each_char): ditto.
-
-Sat Dec 19 14:59:30 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gem_prelude.rb (Kernel#gem): should make gem private.  a patch
-	  from Sho Hashimoto in [ruby-dev:39838].
-
-Sat Dec 19 14:57:17 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/webrick/config.rb (WEBrick::Config): typo fixed.  a patch
-	  from Sho Hashimoto in [ruby-dev:39835].
-
-Sat Dec 19 11:06:48 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb (each2,collect2,map2): Fix enumerator
-	  [ruby-core:27225]
-
-Sat Dec 19 09:58:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (check_funcall): reset method_missing_reason before
-	  trying the call.  based on a patch from Yehuda Katz in
-	  [ruby-core:27219].
-
-Sat Dec 19 09:29:22 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/set.rb: Add checks that passed argument is Enumerable.
-	  [ruby-core:23844]
-
-Wed Dec 16 20:28:46 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/envutil.rb: fix a typo in assert message.
-
-Wed Dec 16 16:57:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/un.rb (httpd): try to convert port number to integer.
-
-Wed Dec 16 11:18:30 2009  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* configure.in(MINIRUBY): use "$BASERUBY" as a default ruby executable
-	  name.
-
-Wed Dec 16 00:53:14 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/find.rb (Find.find): rescue more exceptions which is possible to
-	  occur by other process change the directory tree.
-
-Tue Dec 15 09:06:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/find.rb (Find.find): get rid of race condition.
-
-Mon Dec 14 22:33:21 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/find.rb (Find.find): rescue only ENOENT and EACCES for lstat.
-
-Mon Dec 14 21:49:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/find.rb (Find.find): narrow rescue region.
-
-Mon Dec 14 09:20:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/find.rb (Find.find): removed already unnecessary code.
-
-Sun Dec 13 23:48:25 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/find.rb (Find.find): sort directory entries.  [ruby-dev:39847]
-
-Sun Dec 13 20:55:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (invoke_ruby): call to_str for stdin_data to
-	  reject non-string.
-
-Sun Dec 13 20:26:57 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (rb_parser_dump_tree): add prototype.
-
-Thu Dec 10 20:55:55 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode_data.h, transcode.c, tool/transcode-tblgen.rb: Added
-	  support for new transcoding instruction FUNsio (with Tatsuya Mizuno)
-
-	* enc/trans/gb18030.trans: Significantly reduced GB18030 conversion
-	  table footprint using FUNsio and differences (with Tatsuya Mizuno)
-
-	* test/ruby/test_transcode.rb: Minor name fix (from Tatsuya Mizuno)
-
-Thu Dec 10 17:22:36 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_eval.c (yield_under): yields self the same as 1.8.
-
-Thu Dec 10 15:49:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (native_mutex_reinitialize_atfork): release and
-	  re-acquire the lock at re-initialization.
-
-Thu Dec 10 12:56:02 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_replicate): add Encoding#replicate(name).
-
-	* encoding.c (enc_replicate_with_index): renamed from old
-	  enc_replicate.
-
-	* encoding.c (rb_enc_from_encoding_index): split from
-	  rb_enc_from_encoding.
-
-Thu Dec 10 09:15:00 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): CHAR_ESC_LEN should be 13.
-
-Thu Dec 10 01:12:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (dyna_pop_gen): pop dvars.  [ruby-dev:39861]
-
-Thu Dec 10 00:46:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* node.c (dump_node): fixed for long members.
-
-Wed Dec  9 22:57:04 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* node.c: node management added.  Currently, only pretty-dumper is
-	  implemented.  [ruby-dev:39853]
-
-	* ruby.c: --dump=parsetree and --dump=parsetree_with_comment options
-	  added.  This is just for debug or research purpose.  Note that the
-	  compatibility of these options are not supported at all.
-
-Wed Dec  9 09:50:35 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_justify): fixed the case a fill size is a
-	  multiple of the length of the padding.  [ruby-dev:39856]
-
-Tue Dec  8 23:41:34 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/configure.bat: now recognize --with-*-{dir,include,lib} options
-	  and pass them to mkmf.
-
-	* win32/configure.bat: general conversion from ``/'' to ``\'' of
-	  configure_args is not necessary any longer.
-
-	* win32/setup.mak: BASERUBY is used as command, so always need to
-	  convert ``/'' to ``\'' within it.
-
-Tue Dec  8 23:39:52 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (flo_eq): suppress a warning on VC++ for x64.
-
-Tue Dec  8 16:19:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems: update to 1.3.5.
-
-	* lib/rubygems/defaults.rb (Gem::default_dir): removed a clause
-	  doing nothing.
-
-Tue Dec  8 03:50:24 2009  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (rb_f_test): use string form in unknown command error
-	  message.
-
-Mon Dec  7 14:11:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_object): reverted r26007.  [ruby-dev:39845]
-
-	* test/test_delegate.rb (test_marshal): moved from test_marshal.rb.
-
-Mon Dec  7 13:05:59 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* string.c (rb_str_justify): CVE-2009-4124.
-	  Fixes a bug reported by
-	  Emmanouel Kellinis <Emmanouel.Kellinis AT kpmg.co.uk>, KPMG London;
-	  Patch by nobu.
-
-Sun Dec  6 23:50:46 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* strftime.c: %l should be 1..12 instead of 0..12 [ruby-core:27072]
-
-Sun Dec  6 23:16:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/find.rb (Find.find): reduce stat system call.
-
-Sun Dec  6 16:02:15 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/webrick/httpservlet/filehandler.rb: escape filename of index.
-	  [ruby-dev:37768]
-
-Sun Dec  6 00:35:16 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/setup (config.h): EXECUTABLE_EXTS moved from
-	  dln.c:dln_find_1().
-
-Sat Dec  5 15:35:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_object): dump instance variables when using
-	  marshal_dump.   [ruby-core:24211]
-
-	* variable.c (rb_ivar_count): added.
-
-Sat Dec  5 13:19:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: default ac_cv_prog_CC to CC.
-
-Sat Dec  5 10:18:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb/extend-command.rb (def_extend_command): fixed argument
-	  number for negative arity.
-
-Fri Dec  4 16:50:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (k_def): adjust the location of method definition to the
-	  line of def.  [Bug #2427]
-
-Fri Dec  4 19:05:28 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (defined): should respect #respond_to_missing? as
-	  #respond_to? does.
-
-Fri Dec  4 15:50:18 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_eval.c (yield_under): does not yield self, and passes blockptr
-	  instead of &block to vm_cref_push().  [ruby-dev:39833]
-
-Fri Dec  4 15:15:43 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (num_exact): should not accept strings as operands, even
-	  though they respond to #to_r.  ideally, strict rational
-	  conversion should be done by a method like #to_rational, not #to_r.
-	  [ruby-core:23729]
-
-Fri Dec  4 13:10:23 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* ext/stringio/stringio.c (ungetc): RDoc updated.  trunk allows
-	  pushing back behind the beginning of the pseudo stream.
-
-Fri Dec  4 03:10:38 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* compile.c (compile_cpath, iseq_compile_each): reverted
-	  constant/class variable lookup in instance_eval etc. to the
-	  behavior of 1.8.
-
-	* eval.c (rb_mod_nesting): ditto.
-
-	* insns.def (putspecialobject, defineclass): ditto.
-
-	* node.h (NODE_FL_CREF_PUSHED_BY_EVAL): ditto.
-
-	* vm_core.h (VM_SPECIAL_OBJECT_CONST_BASE): ditto.
-
-	* vm_eval.c (yield_under, eval_under): ditto.
-
-	* vm_insnhelper.c (vm_cref_push, vm_get_const_base,
-	  vm_get_ev_const, vm_get_cvar_base): ditto.
-
-Thu Dec 3 20:27:27 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/gb18030-tbl.rb: Fix omission of C1 region in code table
-	  (from Tatsuya Mizuno)
-
-	* test/ruby/test_transcode.rb: Added test for converting full range of
-	  Unicode codepoints from/to GB18030 (from Tatsuya Mizuno)
-
-Wed Dec  2 23:51:28 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl.c: initialize @hostname of SSLSocket to avoid
-	  warning at SSLSocket#connect.
-
-Tue Dec  1 18:01:43 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/digest/test_digest_extend.rb: added tests for digest framework.
-
-Tue Dec  1 12:01:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (dyna_push_gen, dyna_pop_gen): no needs to save both of
-	  args and vars.  [ruby-core:26961]
-
-	* parse.y (dyna_push_gen): use rb_node_newnode() for ripper.
-	  [ruby-core:26961]
-
-	* parse.y (dyna_push_gen, dyna_pop_gen): adjust local vtable level
-	  for the case of syntax errors in method name or argument inside
-	  do block.   [ruby-core:26961]
-
-Mon Nov 30 16:57:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (command_output): $makeflags are already quoted.
-
-Mon Nov 30 16:54:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, win32/Makefile.sub (EXECUTABLE_EXTS): moved from
-	  dln.c:dln_find_1().
-
-	* lib/mkmf.rb (def find_executable0): use EXECUTABLE_EXTS, not
-	  only EXEEXT.  [ruby-core:26821]
-
-Mon Nov 30 11:00:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): suppress an extra error message after
-	  numeric literal without digits.  based on a patch from ujihisa .
-	  in [ruby-dev:39811].  [ruby-dev:39798]
-
-Sun Nov 29 16:56:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (check_funcall_failed): pass ID.  [ruby-core:26934]
-
-Sun Nov 29 06:37:53 2009  Aaron Patterson  <tenderlove@ruby-lang.org>
-
-	* lib/rexml/formatters/default.rb (write_attribute): fix an
-	  exception when printing a document when duplicate namespaced
-	  attributes exist. Thanks, Alexey Froloff [ruby-core:26837]
-
-Sat Nov 28 09:05:53 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_eval.c (check_funcall_failed): should rescue user raised
-	  NoMethodError.  rescue all NoMethodError if receiver does not
-	  respond to the method name.  [ruby-dev:39796]
-
-Thu Nov 26 21:14:30 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_complex.rb (@unify): fix the detection if math
-	  loaded. This makes test_complex.rb work fine with the previous
-	  commit.
-
-	* test/ruby/test_rational.rb (@unify): ditto.
-
-Thu Nov 26 21:13:36 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/test_mathn.rb (TestMathn): new test case.
-	  test for r25067.
-
-Thu Nov 26 21:11:23 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/openssl/test_config.rb (OpenSSL::TestConfig): new test case.
-	  test for r25017.
-
-Thu Nov 26 21:08:54 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_range.rb (TestRange#test_comparison_when_recursive):
-	  test for r25010.
-
-	* test/ruby/test_struct.rb (TestStruct#test_comparison_when_recursive):
-	  ditto.
-
-Thu Nov 26 20:18:02 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* gem_prelude.rb (Gem.set_home): must dup before force_encoding
-	  and must force_encoding before gsub.
-	  cf. Yen Sign problem of SJIS [ruby-core:26910]
-
-Thu Nov 26 17:54:37 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/{configure.bat, setup.mak, Makefile.sub}: add new configure
-	  option ``--with-ntver''.
-
-Thu Nov 26 11:42:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/mkmf/base.rb: use $INCFLAGS to add -I option.  [Bug#2387]
-
-Thu Nov 26 07:17:58 2009  wanabe  <s.wanabe@gmail.com>
-
-	* marshal.c (mark_dump_arg): mark str.  see also [ruby-dev:39735]
-
-Thu Nov 26 00:05:58 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* test/digest/test_digest_extend.rb: Added tests for current digest
-	  framework.
-
-Wed Nov 25 20:46:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* vm_eval.c (rb_search_method_entry): refine error message.
-
-Wed Nov 25 19:29:05 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/digest.c (rb_digest_instance_method_unimpl): Do not
-	  call rb_inspect() on an object that does not implement necessary
-	  methods; reported by NaHi.
-
-Wed Nov 25 19:30:30 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: Added a check for an internal error
-	  (with Tatsuya Mizuno)
-
-Tue Nov 24 22:57:46 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (EnvUtil.invoke_ruby): raise Timeout::Error
-	  instead of flunk.  reported by Yusuke Endoh.
-
-Tue Nov 24 22:31:44 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (ruby_vm_destruct, thread_memsize): fix argument type to make
-	  RUBY_MARK_FREE_DEBUG available.
-
-Tue Nov 24 21:25:21 2009  Tanaka Akira  <akr@fsij.org>
-
-	* error.c: include errno.h at beginning.
-
-Tue Nov 24 20:11:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c: %Y format a year with 4 digits at least.
-
-	* lib/time.rb: format a year with 4 digits at least.
-
-Tue Nov 24 20:05:27 2009  Tanaka Akira  <akr@fsij.org>
-
-	* defs/known_errors.def: more errors.
-
-Tue Nov 24 20:01:49 2009  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (rb_bug_errno): declared.
-
-	* include/ruby/intern.h (rb_strerrno): declaration removed.
-
-	* error.c (rb_strerrno): make it static.  return NULL for unknown
-	  errors.
-	  (rb_bug_errno): defined.
-
-	* thread_pthread.c: use rb_bug_errno.
-
-	* signal.c (ruby_signal): use rb_bug_errno.
-
-Tue Nov 24 10:17:38 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (file_path_convert): fix fs_encoding is not assign.
-
-Tue Nov 24 10:00:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_strerrno): constified.
-
-Tue Nov 24 09:49:31 2009  Tanaka Akira  <akr@fsij.org>
-
-	* error.c (rb_strerrno): return "UNKNOWNERROR" for non-zero unknown
-	  error.
-
-Tue Nov 24 09:18:33 2009  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_strerrno): declared.
-
-	* template/known_errors.inc.tmpl: generate defined_error() and
-	  undefined_error() instead of set_syserr.
-
-	* error.c (Init_syserr): define defined_error() and undefined_error()
-	  to follow the above change.
-	  (rb_strerrno): defined.
-
-	* thread_pthread.c: show error message and errno macro name with
-	  rb_bug.
-
-Mon Nov 23 16:06:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (RUBY_STACK_MIN, RUBY_STACK_SPACE): delay for
-	  platforms where PTHREAD_STACK_MIN is not compile time constant.
-	  [ruby-dev:39751]
-
-Mon Nov 23 11:26:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_find_1): removed duplication.
-
-Mon Nov 23 04:12:00 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans (fun_so_universal_newline): generate \n
-	  after \r\n detection instead of just after \r.
-	  [ruby-list:45988] [ruby-core:25881] [ruby-core:26788]
-
-Sat Nov 21 18:48:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* vm_eval.c (rb_search_method_entry): show flags and klass value in
-	  not implemented error message.
-
-Sat Nov 21 16:38:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (marshal_dump): use normal object as the buffer so
-	  that no hidden object is exposed to ruby-level.  [ruby-dev:39744]
-
-Sat Nov 21 15:58:43 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (read_all): fix: false negative invalid byte sequence
-	  on reading from pipes. [ruby-dev:39743]
-	  fix: assign the variable 'pos' as relative value from recent pos.
-
-Sat Nov 21 14:44:16 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (file_path_convert): delay getting UTF8-MAC encoding
-	  while really needed. [ruby-core:26807]
-
-Fri Nov 20 21:16:54 2009  Tanaka Akira  <akr@fsij.org>
-
-	* vm_eval.c (rb_search_method_entry): avoid trigraph.
-
-Thu Nov 19 23:17:06 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (putbinaryfile): use APPE for resume.
-	  Thanks, Tomoyuki Chikanaga.
-
-Thu Nov 19 22:50:05 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (flag_list): untaint strings to intern in the safe
-	  level 1.
-
-	* lib/net/imap.rb (max_flag_count=): new methods to set the max
-	  number of flags interned to symbols.
-
-Thu Nov 19 20:43:39 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/getnameinfo.c: need to include extconf.h for HAVE_* macros.
-	  reported by Kenta Murata <mrkn AT mrkn.jp> via IRC.
-
-Thu Nov 19 17:00:59 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub: nmake execute the file named echo if it exists
-	  in the PATH.  reported by Kenta Murata <mrkn AT mrkn.jp> via IRC.
-
-Thu Nov 19 02:50:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* vm_eval.c (rb_search_method_entry): show the type of the hidden
-	  object.
-	  (rb_type_str): new function for above.
-
-Thu Nov 19 00:47:09 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (MORE_CHAR_SUSPENDED): renamed from MORE_CHAR_CBUF_FULL.
-
-Wed Nov 18 22:00:13 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fill_cbuf): extracted from more_char.
-	  (io_shift_cbuf): fix memmove condition.
-	  (read_all): use fill_cbuf directly to avoid ECONV_AFTER_OUTPUT.
-	  [ruby-dev:39708]
-
-Wed Nov 18 18:25:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_atfork_internal): reinitialize global lock
-	  at fork to get rid of deadlock.  based on the patch from Hongli
-	  Lai in [ruby-core:26783].  [ruby-core:23572]
-
-Wed Nov 18 17:48:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (terminate_atfork_i): all mutex locks by other threads
-	  have been abandoned at fork.
-
-Wed Nov 18 15:27:20 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (file_path_convert): delay getting filesystem encoding
-	  while really needed.
-
-Wed Nov 18 12:33:42 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_set_default_encoding): reset filesystem
-	  encoding because on resetting default_external because
-	  Unix's filesystem encoding depends on default_external.
-
-	* encoding.c (enc_set_filesystem_encoding): added.
-
-	* ruby.c (process_options): don't call rb_filesystem_encoding
-	  because filesystem encoding is reset when default_external
-	  is reset.
-
-Wed Nov 18 11:57:32 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* math.c (math_gamma): fix incorrect comparison expression.
-	  see also [ruby-dev:39709] [Bug #2381]
-
-Wed Nov 18 11:37:05 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_scan_open_args): move path encoding conversion
-	  for filesystem encoding of Mac OS X.
-
-	* file.c (file_path_convert): added for convert encoding
-	  of file path.
-
-	* file.c (rb_get_path_check): add file_path_convert.
-
-Wed Nov 18 10:17:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_utf8_nth): no count_utf8_lead_bytes_with_word
-	  optimization for short string.  [ruby-core:26787]
-
-	* string.c (str_utf8_offset): str_utf8_nth never return NULL.
-
-Wed Nov 18 10:12:34 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_method.c (rb_undef): should raise TypeError if klass is nil.
-	  1.instance_eval { undef to_s } causes SEGV before this fix.
-
-	* test/ruby/test_undef.rb: new tests for undef.
-
-Wed Nov 18 08:41:42 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_utf8_nth): fixed overrun.  [ruby-core:26787]
-
-Wed Nov 18 07:51:01 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (parse_mode_enc): fix invalid access.
-
-Tue Nov 17 23:50:06 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_method.c (rb_alias): should raise TypeError if klass is nil.
-	  1.instance_eval { alias to_string to_s } causes SEGV before this
-	  fix.
-
-	* test/ruby/test_alias.rb (test_special_const_alias): ditto.
-
-Tue Nov 17 17:53:53 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/big5.c, enc/trans/big5.trans, enc/trans/big5-uao-tbl.rb,
-	  test/ruby/test-transcode.rb: Added Encoding 'Big5-UAO' and transcoding
-	  for it (from Tatsuya Mizuno) (see Bug #1784)
-
-Tue Nov 17 16:26:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (opt_case_dispatch): runtime value cannot be used as
-	  an element initializer.
-
-	* vm_insnhelper.c (opt_case_dispatch_i): gets rid of type-punning
-	  calls.
-
-Mon Nov 16 15:51:53 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): protected singleton methods of
-	  an object should not be able to called from other instances of the
-	  class of the object.  [ruby-core:26761]
-
-	* vm_eval.c (rb_method_call_status): ditto.
-
-	* test/ruby/test_module.rb (test_protected_singleton_method): ditto.
-
-Mon Nov 16 14:03:53 2009  wanabe  <s.wanabe@gmail.com>
-
-	* io.c (read_all): shift read buffer if exception occurred.
-	  pointed out in [ruby-dev:39702].
-
-Mon Nov 16 07:59:38 2009  wanabe  <s.wanabe@gmail.com>
-
-	* io.c (read_all): don't call io_shift_cbuf until buffering enough or
-	  econv_finished.   [ruby-dev:39696]
-
-	* io.c (more_char): don't call clear_readconv to read buffer after
-	  econv_finished.
-
-	* io.c (appendline, rb_io_each_codepoint): clear readconv when done.
-
-Mon Nov 16 01:58:08 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* include/ruby/ruby.h (rb_classext_t): annotate @internal.
-
-Mon Nov 16 01:35:34 2009  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_filesystem_encindex): use default external encoding
-	  instead of locale encoding in Unix.
-
-	* ruby.c (process_options): delay filesystem encoding
-	  initialization until default external encoding initialization.
-
-Mon Nov 16 00:06:26 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (thread_cleanup_func): delete locking_mutex when thread
-	  object become dummy because of fork.  [ruby-core:26744]
-	  [ruby-core:26745]
-
-	* bootstraptest/test_thread.rb: add a test for above.
-
-Sat Nov 14 21:54:46 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* class.c (rb_mod_init_copy): fix memory leak of Class#dup.
-	  [ruby-dev:39687]
-
-Sat Nov 14 17:09:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (--with-opt-dir): ignore and suppress a warning.
-	  [ruby-dev:39684]
-
-Sat Nov 14 16:43:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (ruby_setenv): get rid of crash in Solaris 8 and 10.
-	  [ruby-core:26668]
-
-Sat Nov 14 09:16:54 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimalCmp): Fix comparisons
-	  [ruby-core:26646]
-
-	* test/bigdecimal/test_bigdecimal.rb (class): Fix and improve tests.
-
-Sat Nov 14 04:07:06 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/variable.rb (TkVariable::coerce): fix bug on a
-	  numeric value.
-
-Sat Nov 14 03:35:29 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/variable.rb: TkVariable#*(other) and /(other) have a
-	  bug on handling of the "other" value.
-
-Fri Nov 13 21:18:15 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/zlib/zlib.c (rb_zlib_adler32): fix typo.
-
-Fri Nov 13 16:22:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): see first_func, not first_proc,
-	  to decide which to use.
-
-	* gc.c (vm_xrealloc): use the given object space.
-
-Fri Nov 13 00:46:24 2009  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/util.rb (CGI::pretty): fix the overflow bug
-	  if stripped string.[ruby-dev:37975]
-
-Thu Nov 12 23:08:11 2009  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (read_from_cmdline): this code is better.
-	  [ruby-core:25991]
-
-Thu Nov 12 22:55:42 2009  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/net/telnet.rb: don't use simple delegate.
-	  because SimpleDelegate behavior changed.
-
-Thu Nov 12 14:33:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_win32.c (thread_errno): CreateThread does not set errno.
-
-	* thread.c (thread_create_core): moved failure handling from
-	  native_thread_core().
-
-	* thread_pthread.c (native_thread_create): constified.
-
-Thu Nov 12 10:08:56 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* .document: remove documents not in rdoc format until
-	  rdoc supports non rdoc files. [ruby-core:26459]
-
-Thu Nov 12 06:42:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#initialize): option hash may not be
-	  given.  [ruby-core:26681]
-
-Thu Nov 12 01:29:15 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enumerator.c (yielder_yield_push): Yielder#<< should return self.
-	  [ruby-dev:39660]
-
-Wed Nov 11 19:17:35 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#initialize): merge mode option.
-
-	* lib/tmpdir.rb (Dir::Tmpname#create): splat options.
-
-Wed Nov 11 12:54:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (ruby_setenv): use ruby_strdup().
-
-Wed Nov 11 12:19:27 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* hash.c (ruby_setenv): also set CRT workarea.  ref [ruby-core:25010]
-
-Wed Nov 11 09:36:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_object, r_object0): use RHASH_IFNONE but not ifnone
-	  directly.
-
-Wed Nov 11 08:32:45 2009  Tanaka Akira  <akr@fsij.org>
-
-	* thread.c (blocking_region_begin): define before BLOCKING_REGION.
-	  reported by Luis Lavena.  [ruby-core:26670]
-
-Wed Nov 11 08:22:19 2009  Tanaka Akira  <akr@fsij.org>
-
-	* util.c (ruby_strtod): use dval() consistently.
-
-Wed Nov 11 02:14:48 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/matrix/test_matrix.rb (TestMatrix#test_rank):
-	  added a test method for r24969.
-
-Tue Nov 10 08:23:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_f_exec, rb_f_system, rb_f_spawn): mentioned about
-	  the shell to be used when the command line is single string.
-	  See [ruby-core:26652]
-
-Mon Nov  9 20:15:16 2009  Tanaka Akira  <akr@fsij.org>
-
-	* thread.c (rb_gc_save_machine_context): don't save the stack pointer
-	  in this function.
-	  (RB_GC_SAVE_MACHINE_CONTEXT): call rb_gc_save_machine_context and
-	  save the stack pointer at caller side.
-	  (rb_thread_schedule_rec): use RB_GC_SAVE_MACHINE_CONTEXT instead of
-	  rb_gc_save_machine_context.
-	  (blocking_region_begin): changed to a macro.  use
-	  RB_GC_SAVE_MACHINE_CONTEXT instead of rb_gc_save_machine_context.
-	  [ruby-dev:39659]
-
-Mon Nov  9 11:28:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (warnflags): add -Wno-long-long.
-
-Sun Nov  8 18:13:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c: use RHASH_IFNONE but not ifnone directly.
-
-Sat Nov  7 21:02:57 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb (PP::ObjectMixin#pretty_print): use to_s regardless of
-	  instance variables.
-
-Sat Nov  7 20:59:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_push_frame): get rid of out-of-bounds
-	  access.
-
-Sat Nov  7 12:41:19 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_insnhelper.c (VM_CALLEE_SETUP_ARG): revert r25521.
-	   [ruby-core:26427] [ruby-core:26447]
-
-Fri Nov  6 18:33:47 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_push_frame): add CHECK_STACK_OVERFLOW.
-	  [ruby-dev:39592]
-
-	* eval.c (rb_longjmp): add 1 level backtrace for sysstack_error
-	  without calling any method to prevent further stack overflow.
-
-	* eval.c (make_exception): don't call #exception for
-	  sysstack_error to prevent stack overflow.
-
-	* proc.c (Init_Proc): don't freeze sysstack_error.
-
-	* eval.c (rb_longjmp): move reentrant check after exception
-	  preparation.
-
-Fri Nov  6 17:13:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_header): split the line by tabs.
-
-Fri Nov  6 12:02:32 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in (MINIDLNOBJ): set default as dmydln.o.
-	  Now LLVM clang seems to be able to build Ruby 1.9.
-
-Fri Nov  6 09:29:32 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encindex): add fallback to
-	  ASCII-8BIT on Windows.
-
-Fri Nov  6 07:29:07 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_case.rb: merged r25658 from ruby_1_8.
-
-Thu Nov  5 12:27:07 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* gem_prelude.rb (Gem.user_home): force_encoding(
-	  Encoding.find('filesystem')). [ruby-core:26525]
-
-Thu Nov  5 07:47:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (BEGIN): now local_push and local_pop are necessary in
-	  ripper.
-
-Wed Nov  4 21:39:10 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* .document: add some README files to default rdoc's of trunk.
-	  patched by Roger Pack [ruby-core:26459]
-
-Wed Nov  4 16:06:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/st.h (SIZEOF_ST_INDEX_T): moved from st.c for
-	  Init_RandomSeed().
-
-Wed Nov  4 15:50:16 2009  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* include/ruby/ruby.h (NUM2CHR): prefix __extension__ for
-	  braced-groups within expressions.
-
-Wed Nov  4 15:46:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (set_{internal,external}_encoding_once): fixed typos.
-
-Wed Nov  4 12:49:18 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* proc.c (mnew): Fix scope issue [ruby-core:26069]
-
-Wed Nov  4 08:50:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (rb_hash_start): moved from string.c.
-
-	* random.c (Init_RandomSeed2): register global address before set.
-
-	* random.c (Init_RandomSeed): initialize hashseed.
-
-Wed Nov  4 08:26:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_check): moved other checks from GetDIR.
-
-	* dir.c (GetDIR): fixed a variable name.
-
-Wed Nov  4 08:19:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (rb_fiber_start): fixed unconditional test.
-
-Wed Nov  4 02:08:14 2009  Aaron Patterson  <tenderlove@ruby-lang.org>
-
-	* ext/dl/cptr.c (rb_dlptr_eql, rb_dlptr_cmp): DL::CPtr#== and DL::CPtr#<=>
-	  should not raise an exception when compared to a different object.
-
-Wed Nov  4 00:05:36 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_upto): make next object before yield its block.
-	  fix: can modify original begin string of String#upto.
-	  [ruby-dev:26384] [ruby-dev:39626]
-
-Mon Nov  2 18:33:21 2009  wanabe  <s.wanabe@gmail.com>
-
-	* cont.c (fiber_free): don't free unallocated local_storage. see #1325.
-
-	* cont.c (cont_init): clear local_storage not to use current thread's.
-
-	* cont.c (fiber_t_alloc, root_fiber_alloc): link itself always for
-	  a case that fiber_link_remove() is called before fiber_link_join().
-
-	* cont.c (fiber_init): clear cont->vm_stack and th->stack before
-	  root_fiber_alloc() in rb_fiber_current().
-
-Mon Nov  2 14:52:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_exc_raise, rb_exc_fatal, rb_make_exception):
-	  suppressed shorten-64-to-32 warnings.
-
-Mon Nov  2 14:43:48 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_pthread.c (native_stop_timer_thread): delay joining timer
-	  thread after unlocking mutex.
-
-Mon Nov  2 13:31:14 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_pthread.c (native_stop_timer_thread): need to join timer thread
-	  only when really stopping it.
-
-Mon Nov  2 12:55:50 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_{pthread,win32}.c (native_stop_timer_thread): join the thread
-	  here.
-
-	* thread_{pthread,win32}.c (native_reset_timer_thread): new function.
-
-	* thread.c (rb_thread_stop_timer_thread, rb_thread_reset_timer_thread):
-	  call above function instead of simply setting 0.
-
-Mon Nov  2 11:22:19 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/dl/win32/lib/win32/registry.rb: update rdoc. [ruby-core:26022]
-
-Sun Nov  1 20:16:03 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c: fixed rdoc. [ruby-core:26457]
-
-Sun Nov  1 16:24:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_stack_grow_dir): fix for universal binary.
-
-	* configure.in (sitehdrdir, vendorhdrdir): fixed default values.
-
-Sun Nov  1 13:31:16 2009  wanabe  <s.wanabe@gmail.com>
-
-	* win32/win32.c (overlapped_socket_io, recvmsg, sendmsg): pass handle
-	  instead of pointer to CloseHandle().
-
-Sun Nov  1 13:11:27 2009  wanabe  <s.wanabe@gmail.com>
-
-	* ext/socket/socket.c (socket_s_ip_address_list): use FreeLibrary() to
-	  free HMODULE.
-
-Sun Nov  1 08:17:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (GET_STACK_BOUNDS): refactored common code.  based on a
-	  patch from Suraj N. Kurapati <sunaku AT gmail.com> in
-	  [ruby-core:26443].
-
-Sat Oct 31 23:44:35 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_count): remove optimization using #size.
-	  revert r25560.
-
-	* vm_eval.c (rb_funcall_no_recursive): remove method.
-
-Sat Oct 31 23:28:49 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_eval.c (check_funcall): logic updated according to
-	  [ruby-dev:39594].  search method entry, call if it exists;
-	  otherwise check method_missing, call if it was overridden,
-	  protecting exceptions; if NoMethodError happens, check method
-	  name.
-
-	* vm_eval.c (vm_call0): use idMethodMissing.
-
-	* vm_eval.c (rb_search_method_entry): typo fixed.
-
-Sat Oct 31 17:19:28 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTPResponse#each_response_header):
-	  cosmetic: '?\ ' -> '?\s'
-
-Fri Oct 30 22:09:47 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTPResponse#each_response_header):
-	  accept multiline message header of HTTP response.  see #1796.
-	  cf. RFC 2616 '4.2 Message Header'.
-
-	* test/net/http/test_httpresponse.rb: added.
-
-Fri Oct 30 18:54:04 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (trnext): detect empty range and raise exception.
-	   [ruby-dev:39108]
-
-Fri Oct 30 17:01:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (enum call_type): get rid of last comma.
-
-	* vm_eval.c (vm_call0, vm_call_super, rb_f_send, rb_f_public_send):
-	  fixed call_type.  [ruby-dev:39581]
-
-	* vm_eval.c (rb_search_method_entry, rb_method_call_status): split
-	  from rb_call0().
-
-	* vm_eval.c (rb_check_funcall): get rid of raising exceptions and
-	  hiding further exceptions.  [ruby-dev:39584]
-
-	* vm_eval.c (rb_funcall_no_recursive): ditto.
-
-Fri Oct 30 13:36:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_blocking_region): reverted r25566, and added
-	  description that no exception is allowed inside `func', instead.
-	  see [ruby-dev:39582]
-
-Fri Oct 30 13:13:16 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32.c (recvmsg, sendmsg, link): shouldn't raise ruby's exceptions
-	  in the functions expected as system API.  see [ruby-dev:39579] and
-	  [ruby-dev:39582]
-
-Fri Oct 30 12:59:20 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (rb_thread_blocking_region): standard C doesn't accept
-	  preprocessing directive within macro expansion.
-
-Fri Oct 30 10:55:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_blocking_region): must ensure to unlock GVL.
-	  [ruby-dev:39579]
-
-Fri Oct 30 04:47:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (RSTRING_END): trivial optimization.
-
-	* string.c (rb_str_sub_bang): trivial optimization.
-
-Fri Oct 30 02:11:36 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_count): call #size using rb_funcall_no_recursive()
-	  to prevent infinite recursive calls.  [ruby-core:24794]
-
-	* vm_eval.c (rb_funcall_no_recursive): utility function to check
-	  direct recursive call.
-
-	* vm_eval.c (rb_check_funcall): move from eval.c. [refactoring]
-
-Thu Oct 29 18:37:02 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): revert previous commit.
-
-	* ruby.c (process_options): ditto.
-
-Thu Oct 29 15:35:39 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): set locale and filesystem encindex.
-
-	* ruby.c (process_options): move setting func of filesystem
-	  encoding to Init_Encoding.
-
-Thu Oct 29 15:43:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_name_err_mesg_new): added prototype.
-
-Thu Oct 29 13:53:18 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_to_ary): do not use #respond_to? to detect
-	  to_ary.  Just call.  [ruby-core:23738]
-
-	* eval.c (rb_check_funcall): new function with method existence
-	  check.  returns Qundef when the method does not exist.
-
-	* enumerator.c (enumerator_rewind): just call method, using
-	  rb_check_funcall().  [ruby-core:23738]
-
-	* error.c (exc_equal): ditto.
-
-	* object.c (convert_type): ditto.
-
-	* error.c (rb_name_err_mesg_new): export function.
-
-	* eval.c (make_exception): ditto.
-
-	* io.c (pop_last_hash): return early when the last argument is nil.
-
-	* io.c (rb_io_puts): treat T_STRING specially for small
-	  optimization.
-
-	* vm_eval.c (raise_method_missing): skip method call if possible
-	  using rb_method_basic_definition_p().
-
-	* vm_eval.c (method_missing): ditto.
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_debug): test
-	  suites changed to ignore exceptions caused by just-call policy.
-
-Thu Oct 29 04:41:44 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (process_options): call rb_filesystem_encoding().
-
-Thu Oct 29 04:40:36 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (Init_IO): rb_default_rs should be US-ASCII.
-
-Thu Oct 29 01:22:01 2009  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* ext/socket/extconf.rb : Compilation failure on AIX.
-	  ss_len (a member of struct sockaddr_storage) has preceding __,
-	  but ss_family does not have it from AIX 5.2.
-
-Wed Oct 28 16:32:49 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (get_filesystem_encoding): removed.
-
-	* encoding.c (rb_locale_encindex): added.
-
-	* encoding.c (rb_filesystem_encindex): added.
-
-	* encoding.c (rb_filesystem_encindex): add an alias 'filesystem'.
-	  [ruby-dev:39574]
-
-	* encoding.c (enc_find): add rdoc about special aliases.
-
-	* gem_prelude.rb (Gem.set_home): use Encoding.find('filesystem').
-
-	* gem_prelude.rb (Gem.set_paths): ditto.
-
-Wed Oct 28 15:02:31 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* gem_prelude.rb (Gem.set_home):
-	  force_encoding(Encoding.filesystem_encoding)
-	  [ruby-core:25959]
-
-	* gem_prelude.rb (Gem.set_paths): ditto.
-
-Wed Oct 28 14:24:45 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (get_filesystem_encoding):
-	  add Encoding.filesystem_encoding [ruby-dev:39546]
-	  also see [ruby-core:25959]
-
-Wed Oct 28 14:51:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_each_group): fixed typo.
-
-Wed Oct 28 13:02:10 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (Net::FTP#initialize): sets @binary to true.
-
-	* lib/net/ftp.rb (Net::FTP#binary=): sends a TYPE command only when
-	  logged in. [ruby-dev:39548]
-
-	* lib/net/ftp.rb (Net::FTP#send_type_command): new private method
-	  which sends an appropriate TYPE command according to the value of
-	  @binary.
-
-	* lib/net/ftp.rb (Net::FTP#login): calls send_type_command instead
-	  of binary=.
-
-Wed Oct 28 12:26:51 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_setup_method): should push call frame before
-	  raising exception, to put the Ruby-defined method name in the
-	  error message.  [ruby-core:26333]
-
-	* vm_insnhelper.c (VM_CALLEE_SETUP_ARG): macro modified.
-
-	* vm_insnhelper.c (vm_yield_setup_args): modified for new
-	  VM_CALLEE_SETUP_ARG macro.
-
-Tue Oct 27 22:46:44 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/ftp.rb (Net::FTP#initialize): @sock = nil.
-
-	* lib/net/ftp.rb (Net::FTP#binary=): send command only when
-	  socket is open. [ruby-dev:39548]
-
-Tue Oct 27 22:22:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (Init_stringio): added read_nonblock and
-	  write_nonblock aliases.  [ruby-dev:39551]
-
-	* ext/stringio/stringio.c (strio_data_type): typed.
-
-Tue Oct 27 21:20:35 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/variable.rb: add TkVariable#+@ and -@ method.
-
-Tue Oct 27 16:36:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (chopped_length): get rid of unexpected exception.
-	  see [ruby-core:26336].
-
-Tue Oct 27 15:53:10 2009  Tanaka Akira  <akr@fsij.org>
-
-	* gc.h (SET_MACHINE_STACK_END): use __i386.
-	  Some compiler may not define __i386__.
-	  Solaris 64-bit Developer's Guide:
-	  http://docs.sun.com/app/docs/doc/816-5138/dev-env?l=en&a=view
-
-Tue Oct 27 15:44:48 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (getbinaryfile, list): call to_s to convert
-	  a Pathname instance into a string.  [ruby-core:26237]
-
-Tue Oct 27 12:30:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.h (SET_MACHINE_STACK_END): use __i386__ instead of __i386,
-	  and explicit size qualifiers.
-
-Tue Oct 27 09:40:55 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* gc.h (SET_MACHINE_STACK_END): add x86_64 version by nobu.
-
-Tue Oct 27 09:27:59 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm_exec.c (DECL_SC_REG): use __clang__.
-
-Tue Oct 27 08:56:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: reverted r25443 because build_os is used in mkmf.rb
-	  on some platforms.  [ruby-core:26332]
-
-Tue Oct 27 08:01:57 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* parse.y (ripper_filename): add Ripper#filename. [ruby-dev:37856]
-
-	* test/ripper/test_filter.rb: add more tests.
-
-Tue Oct 27 07:53:25 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (garbage_collect_with_gvl): do not garbage_collect when
-	  dont_gc flag turned on.  [ruby-core:26327]
-
-Tue Oct 27 07:38:39 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c,stubs.c: remove errors or warnings when compiled
-	  with old ruby 1.8.x.
-
-	* ext/tk/tkutil/tkutil.c: ditto.
-
-Tue Oct 27 05:56:39 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm.c (invoke_block_from_c): return Qnil when its iseq is
-	  SPECIAL CONST. [ruby-core:26335]
-
-Tue Oct 27 05:11:49 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm_exec.c (DECL_SC_REG): check defined(__asm__) before use it.
-	  LLVM/clang defines __GNUC__ but doesn't have __asm__.
-
-Tue Oct 27 03:45:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): added RUBY_SITEARCH to use
-	  different name from RUBY_ARCH.  [ruby-core:26324]
-
-Mon Oct 26 20:04:13 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* array.c (rb_ary_cmp): Array#<=> returns nil when comparison fails
-	  [ruby-core:26316]
-
-Mon Oct 26 18:37:57 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (default_proc_arity_check): new support function.
-
-	* hash.c (rb_hash_initialize): should do arity check as #default_proc=.
-	  [ruby-core:26281]
-
-Mon Oct 26 13:24:17 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/remote-tk.rb: typo fixed.
-
-Mon Oct 26 12:34:08 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ruby.c (usage): -T and -W descriptions updated.  see
-	  [ruby-dev:39539]
-
-	* man/ruby.1: ditto.
-
-Mon Oct 26 12:06:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_fwrite): adjust stdio file position after direct write on
-	  BSDish platforms.   [ruby-core:26300]
-
-Sun Oct 25 15:44:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/handle.c (dlhandle_sym): fixed an invalid local variable
-	  declaration.
-
-Sun Oct 25 13:33:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_cntl): F_DUPFD is platform dependent.
-
-Sun Oct 25 10:19:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/handle.c (rb_dlhandle_close): fixed an invalid local
-	  variable declaration.
-
-Sun Oct 25 05:44:34 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb (**): Optimization (up to 45% faster)
-
-Sat Oct 24 14:28:40 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_set_default_proc): checks arity of default_proc
-	  of a Hash.  [ruby-core:26087]
-
-Sat Oct 24 13:38:45 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_cmp): defines Object#<=>.  [ruby-core:24063]
-
-Sat Oct 24 09:51:28 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_flat_map): new method that concatenates the values
-	  from given block.  also provides alias #collect_concat.
-
-Sat Oct 24 00:36:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_cntl): update max file descriptor by the result of
-	  fcntl(F_DUPFD).
-
-Fri Oct 23 16:31:14 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_class_new): move class check to rb_check_inheritable().
-
-	* class.c (rb_check_inheritable): should not allow subclass of
-	  class Class.  [ruby-core:26225]
-
-Fri Oct 23 14:25:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (target, target_alias): replace with real cpu.
-
-	* mkconfig.rb: build* are not needed in rbconfig.rb.
-
-	* configure.in (warnflags): use -Wextra only when
-	  -Wno-missing-field-initializers is available.
-
-	* configure.in (optflags): removed -fomit-frame-pointer by default.
-
-Fri Oct 23 09:12:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pathname.rb (Pathname::SAME_PATHS): FNM_SYSCASE is always
-	  non-nil.
-
-Fri Oct 23 07:32:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, Makefile.in, win32/Makefile.sub (XRUBY): runnable
-	  ruby without current libraries.
-
-	* common.mk (rdoc): use XRUBY.
-
-Fri Oct 23 07:28:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (warnflags): use -Wextra instead of -Wall.
-
-	* gc.c (mark_current_machine_context): get rid of warning.
-
-Thu Oct 22 21:10:39 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* class.c (rb_obj_basic_to_s_p): typo.  Please become familiar with
-	  the ANSI style.
-
-Thu Oct 22 20:20:27 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_in_out_err): test_stdout and
-	  test_stderr should be an array.
-
-	* test/ruby/test_rubyoptions.rb (test_notfound): test_stdin of
-	  assert_in_out_err should be a string.
-
-Thu Oct 22 17:49:05 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/fileutils.rb (FileUtils#fu_get_uid, fu_get_gid): Do not
-	  convert an integer back and forth.
-
-Thu Oct 22 17:29:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (arg_prepend): removed.  a patch from Mikhail T. in
-	  [ruby-core:26217].
-
-Thu Oct 22 04:54:41 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_inspect): print instance variables only when
-	  Object#to_s is not overridden.  [ruby-core:24425]
-
-	* class.c (rb_obj_basic_to_s_p): new function.
-
-Wed Oct 21 19:32:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_obj_inspect): fixed rdoc about the case that to_s
-	  is called.  [ruby-core:24425]
-
-Wed Oct 21 08:17:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/logger/test_logger.rb (TestLogDevice#test_write): check
-	  also error message.
-
-Wed Oct 21 03:54:41 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb:
-	  Creator functions now strict with their arguments
-	  Support for empty matrices (see new method Matrix.empty)
-	  Matrix#trace raises an ErrDimensionMismatch if the matrix is not square
-	  Enumerators are returned when no block given
-	  Consistent results when accessing elements with out of bounds indices
-	  Details in [ruby-core:23598].
-
-Wed Oct 21 00:27:15 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/webrick/httpauth/digestauth.rb: typo in exception message fixed.
-
-Wed Oct 21 00:17:28 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/logger.rb: imported upstream version (logger/1.2.7) see #2238.
-	  * do not raise an exception even if log writing failed.
-	  * do not raise ShiftingError if an aged file already exists.
-	    (no ShiftingError will be raised from 1.2.7, just warn() instead)
-	* test/logger/test_logger.rb: ditto.
-
-Tue Oct 20 22:29:06 2009  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/matrix.rb:  Bug fix. See detail [ruby-core:23598].
-
-Tue Oct 20 17:57:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_symbol, r_symreal): fixed the order of symbol and
-	  its encoding modifier, in order to make the dump readable from
-	  1.8.  [ruby-dev:39515]
-
-Tue Oct 20 16:41:18 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h (finite, scalb): inline'ed non-standard
-	  identifier macros.  [ruby-core:26166]
-
-Tue Oct 20 15:38:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (ripper_intern): enable literal optimization.
-
-	* parse.y (method_call): dispatch symbols.  a patch from Andy Keep in
-	  [ruby-core:26169].  [ruby-core:26165]
-
-	* parse.y (mlhs_basic): fixed handling splat in middle of mlhs.  a
-	  patch from Andy Keep in [ruby-core:26163]
-
-	* parse.y (parser_here_document): dispatch delayed heredoc
-	  contents.  based on a patch from Andy Keep in [ruby-core:24855].
-
-Mon Oct 19 15:17:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* .gdbinit (rb_method_entry): search method entry by class and id.
-
-Mon Oct 19 15:03:31 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (enc/unicode/name2ctype.h): no need to create
-	  directory if it already exists.
-
-Mon Oct 19 11:34:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* .gdbinit (rb_ps): dump all threads and their callstacks.  based
-	  on [ruby-core:26155] by Joshua ben Jore <twists AT gmail.com>.
-
-Mon Oct 19 10:59:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (prepare_iseq_build, rb_iseq_build_for_ruby2cext):
-	  untrust mark array.  [ruby-core:26137]
-
-Mon Oct 19 05:49:53 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/rexml/element.rb (text=): false should be converted to string.
-	  A patch by Teruo Oshida [ruby-dev:38351]
-
-Sun Oct 18 22:33:25 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: do not require lib/delta.rb.
-
-	* lib/date/delta.rb: follows the above change.
-
-Sun Oct 18 19:14:21 2009  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (is_special_global_name): add boundary check.
-
-Sun Oct 18 18:31:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): should not dup tmp string.  a
-	  patch from neomjp neomjp in [ruby-core:24251].
-
-Sun Oct 18 09:49:14 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/test_prime.rb
-	  (TestPrime#test_eratosthenes_works_fine_after_timeout):
-	  test for [ruby-dev:39465].
-
-	* lib/prime.rb (Prime::EratosthenesSieve):
-	  fixed [ruby-dev:39465].
-	  suppressed memory reallocation.
-	  constantified some magic numbers.
-
-Sat Oct 17 22:11:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (id2encidx): register encoding name.
-	  (r_object0): register object before encoding name.
-	  [ruby-core:24882]
-
-Sat Oct 17 17:56:58 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/rake/test_fileutils.rb (Rake::TestFileUtils#test_sh): uses
-	  FileUtils::RUBY instead of fixed "ruby" so that the ruby command
-	  works fine in Ruby's "make test-all".
-	  (test_sh_with_a_single_string_argument): ditto.
-	  (test_sh_with_multiple_arguments): ditto.
-	  (test_sh_failure): ditto
-	  (test_sh_special_handling): ditto.
-
-Sat Oct 17 17:30:06 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (big_split): fix off-by-one error.  [ruby-dev:39501]
-
-Sat Oct 17 16:34:27 2009  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (parser_yylex): fix token even after trailing under score.
-
-Sat Oct 17 11:27:44 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_method.c (basic_obj_respond_to): call #respond_to_missing?
-	  always with two arguments.  [ruby-core:26090]
-
-Sat Oct 17 08:51:44 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator#respond_to_missing): warn only when
-	  specified method is a private.  [ruby-dev:39498]
-
-Fri Oct 17 00:05:53 2009  wanabe  <s.wanabe@gmail.com>
-
-	* st.c (unpack_entries): save table->bins and never change the table
-	  during unpacking. Because st_insert() may cause GC and refer the
-	  table, i.e. st_foreach().  [Bug #2196]
-
-Fri Oct 16 22:20:25 2009  Tanaka Akira  <akr@fsij.org>
-
-	* prelude.rb (require_relative): defined as a module function of
-	  Kernel.
-
-Fri Oct 16 20:18:28 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator#method_missing): remove backtrace
-	  lines _until_ `method_missing'.
-
-Fri Oct 16 20:09:55 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator#freeze): #freeze should freeze self
-	  and the target at once.   [ruby-core:26118]
-
-Fri Oct 16 19:39:28 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator#respond_to_missing): warn if optional
-	  include_private argument is not false.  Delegator does (and
-	  should) not forward private methods.  [ruby-core:26080]
-
-	* lib/delegate.rb (Delegator#respond_to_missing): instead of
-	  redefining #respond_to?, use #respond_to_missing?.  [ruby-core:26081]
-
-Fri Oct 16 18:42:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/test_gc.rb: added tests based on [ruby-dev:39484]
-	  from wanabe <s.wanabe AT gmail.com>.
-
-Fri Oct 16 16:09:01 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn): `\'' is also quote character.
-
-Fri Oct 16 13:40:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.h (rb_gc_debug_body): constified.
-
-Fri Oct 16 13:20:39 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpMidRound): remove warnings.
-	  patch from Charlie Savage. [ruby-core:22869]
-
-	* ext/digest/bubblebabble/bubblebabble.c (bubblebabble_str_new): ditto.
-
-	* ext/digest/digest.c (hexencode_str_new): ditto.
-
-	* ext/iconv/iconv.c (iconv_convert): ditto.
-
-	* ext/socket/socket.c (inspect_sockaddr): ditto.
-
-	* ext/socket/raddrinfo.c (sockaddr_obj): ditto.
-
-	* ext/syck/emitter.c (syck_emitter_write): ditto.
-
-	* ext/syck/emitter.c (syck_emitter_flush): ditto.
-
-	* ext/syck/emitter.c (syck_emit_tag): ditto.
-
-Fri Oct 16 12:03:31 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/csv.rb (CSV#raw_encoding): returns ASCII-8BIT when the io
-	  doesn't have encoding.
-
-Fri Oct 16 03:15:52 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/csv.rb (CSV#read_to_char): set encoding and verify data
-	  which read from io before encode it to @encoding.
-
-	* lib/csv.rb (CSV#raw_encoding): add to get @io's encoding.
-
-	* lib/csv.rb (CSV#read_io): add to read string and set @io's
-	  encoding.
-
-Thu Oct 15 18:26:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_intern3): check symbol table overflow before generate
-	  next id.  [ruby-core:26092]
-
-Thu Oct 15 15:14:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_encoding_set): get rid of parsing non-ascii string, and
-	  refine messages for invalid name encoding.
-
-	* io.c (io_reopen): unread current buffer before telling the
-	  position, for the case of reopening same file.  [ruby-dev:39479]
-
-Thu Oct 15 14:20:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_create): cannot retry with given block.
-	  [ruby-dev:39487]
-
-Thu Oct 15 09:25:07 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/init.c (rsock_init_sock): mswin doesn't have S_IFSOCK
-	  flag in st_mode of struct stat. so, use rb_w32_issocket() function
-	  instead of S_ISSOCK macro.
-
-Thu Oct 15 00:47:42 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/enc-unicode.rb,
-	  enc/unicode/name2ctype.h, enc/unicode/name2ctype.h.blt,
-	  enc/unicode/name2ctype.kwd, enc/unicode/name2ctype.src:
-	  use UTS#18 for POSIX character class.
-	  http://rubyspec.org/issues/show/161
-
-Thu Oct 15 00:26:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/init.c (rsock_init_sock): validate file descriptor.
-
-Wed Oct 14 13:24:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): script name should not be shown in an
-	  error message before loaded.
-
-Wed Oct 14 09:06:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_run_node): need to call ruby_cleanup() always even
-	  if any error occurred so far.
-
-Wed Oct 14 08:08:12 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* proc.c (mnew): Method#new checks for respond_to_missing? with
-	  private set to true
-	  [ruby-core:26069]
-
-Tue Oct 13 21:05:01 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/enc-unicode.rb,
-	  enc/unicode/name2ctype.h, enc/unicode/name2ctype.h.blt,
-	  enc/unicode/name2ctype.kwd, enc/unicode/name2ctype.src:
-	  Add DerivedCoreProperties, PropList (Binary Property),
-	  PropertyAlias and PropertyValueAlias.
-	  Now users of tool/enc-unicode.rb should specify
-	  the directory of UCD files.
-
-Tue Oct 13 18:54:25 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/variable.rb: bug fix. additional trace definition changes the
-	  option of first trace definition.
-
-Tue Oct 13 18:23:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (token_info_push, token_info_pop): reduced ifdefs.
-
-	* parse.y (parser_magic_comment): fixed normalization.
-
-Tue Oct 13 09:04:14 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* thread.c: Revert changes to Thread#raise made in r25278
-	  [ruby-core:25367]
-
-	* eval_intern.h: ditto
-
-Mon Oct 12 23:27:57 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (login): use "anonymous@" as a default password.
-	  [ruby-dev:39451]
-
-Mon Oct 12 22:48:25 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (retrlines): added a new block parameter.
-
-	* lib/net/ftp.rb (gettextfile): preserve missing end-of-line at end
-	  of files.  [ruby-core:24590]
-
-Mon Oct 12 19:48:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_run_node): if an exception occurred in ruby_option,
-	  the result is not executable.
-
-Mon Oct 12 05:51:11 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regparse.c (fetch_token): warn invalid back reference
-	  and subexp call. (\k and \g).
-
-Mon Oct 12 03:47:42 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* marshal.c (has_encoding): added for check the regexp
-	  is dumped by 1.8 or 1.9.
-
-	* marshal.c (r_object0): use has_encoding.
-
-Sun Oct 11 15:54:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/gdbm/gdbm.c (fgdbm_select): fixed rdoc.  a patch from Justin
-	  Collins in [ruby-core:26050].
-
-Sun Oct 11 10:27:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb/context.rb (IRB::Context#irb_name): removed duplicated
-	  attr_reader.  [ruby-core:26047]
-
-	* lib/irb/ruby-lex.rb (RubyLex#lex_int2): removed duplicated
-	  character class range.
-
-Sun Oct 11 10:04:35 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regparse.c (fetch_token_in_cc): warn when \p is not
-	  followed by property name.
-
-	* regparse.c (fetch_token): ditto.
-
-Sun Oct 11 09:44:46 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regerror.c (onig_vsnprintf_with_pattern): added.
-
-	* regparse.c (onig_syntax_warn): use above.
-
-Sun Oct 11 09:04:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (RB_GC_GUARD_PTR): workaround for gcc
-	  optimization.
-
-	* include/ruby/ruby.h (ruby_exec_node): declared.
-
-Sun Oct 11 03:10:50 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regparse.c (onig_syntax_warn): added.
-
-	* regparse.c (CC_ESC_WARN, CLOSE_BRACKET_WITHOUT_ESC_WARN,
-	  CC_DUP_WARN, UNKNOWN_ESC_WARN): use onig_syntax_warn.
-
-Sun Oct 11 00:14:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (marshal_dump, marshal_load): prevent from GC.
-
-Sat Oct 10 23:57:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (path_check_0): prevent from GC.
-
-Sat Oct 10 23:51:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (rb_transcoding, str_transcoding_resize): fixed
-	  types.
-
-Sat Oct 10 20:35:27 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* math.c (math_atanh): reverted r25279.
-
-Sat Oct 10 19:03:29 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/curses/curses.c: use rb_thread_blocking_region to avoid
-	  rb_read_check.  This makes other threads runnable in getstr and
-	  wgetstr.
-	  (getch_func): extracted from curses_getch.
-	  (curses_getch): use rb_thread_blocking_region with getch_func.
-	  (getstr_func): extracted from curses_getstr.
-	  (curses_getstr): use rb_thread_blocking_region with getstr_func.
-	  (wgetch_func): extracted from window_getch.
-	  (window_getch): use rb_thread_blocking_region with wgetch_func.
-	  (wgetstr_func): extracted from window_getstr.
-	  (window_getstr): use rb_thread_blocking_region with wgetstr_func.
-
-	* include/ruby/io.h (rb_read_check): deprecated because it access
-	  internal of stdio.
-
-Sat Oct 10 18:59:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (cflags, cxxflags): remove duplicating options.
-
-Sat Oct 10 18:19:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, Makefile.in (LIBRUBY_SO), common.mk (ruby.imp),
-	  win32/mkexports.rb (each_export): exclude _threadptr_ functions.
-
-Sat Oct 10 17:55:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_threadptr_errinfo): renamed.
-
-Sat Oct 10 17:03:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_exec_node): removed unused argument.
-
-Sat Oct 10 14:55:55 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* math.c (math_atanh): Fix bug for Math.atanh(+/-1). It now returns
-	  +-Infinity. [ruby-core:26028]
-
-Sat Oct 10 14:09:40 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* thread.c (rb_threadptr_execute_interrupts_rec, rb_threadptr_raise):
-	  Thread#raise with no argument will now re-raise the current exception
-	  if there is one [ruby-core:25367]
-
-	* eval.c (get_errinfo, rb_rubylevel_thread_errinfo): Getter for
-	  current exception for a given thread
-
-Fri Oct  9 23:10:04 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_method.c (rb_method_boundp): should exclude NOEX_RESPONDS.
-	  based on the patch from Nikolai Lugovoi.  [ruby-core:25949]
-
-Fri Oct  9 21:14:40 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS::Requester::ConnectedUDP): disable
-	  reverse lookup.
-	  (Resolv::DNS::Requester::UnconnectedUDP): ditto.
-
-Fri Oct  9 10:12:13 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/irb/context.rb (IRB::Context#initialize):
-	  remove warnings when $VERBOSE is set as true in .irbrc.
-
-Fri Oct  9 02:58:18 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/enc-unicode.rb: optimized.
-
-	* enc/unicode/name2ctype.h, enc/unicode/name2ctype.h.blt,
-	  enc/unicode/name2ctype.kwd, enc/unicode/name2ctype.src:
-	  U+100000-U+10FFFD is assigned, not Cn.
-
-Fri Oct  9 02:12:02 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* ext/curses/curses.c: Many functions of module Curses could cause a
-	  crash if the ncurses library was not properly initialized.
-	  Fix pointed out by Alexander Beisig [ruby-core:22592]
-	  Functions fixed: attroff, attron, attrset, bkgd, bkgdset,
-	  can_change_color, close_screen, closed, color_content, curs_set,
-	  def_prog_mode, delch, deleteln, getmouse, getstr, has_colors,
-	  init_color, init_pair, insertln, keyname, mouseinterval, mousemask,
-	  pair_content, pair_number, reset_prog_mode, resizeterm, scrl,
-	  setscrreg, standend, standout, start_color, timeout, ungetmouse,
-	  use_default_colors
-
-Fri Oct  9 01:07:34 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (ADD_TRACE): fire coverage event in ensure clause.
-	  [ruby-dev:39303]
-
-	* iseq.h, iseq.c: ditto.
-
-Fri Oct  9 00:33:29 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/net/telnet.rb (cmd): Pass FailEOF options: patch by Brian
-	  Candler [ruby-core:22723]
-
-Fri Oct  9 00:01:17 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.udp_server_recv): extracted from
-	  Socket.udp_server_loop_on.
-
-Thu Oct  8 05:45:14 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/enc-unicode.rb: parse range notation of UnicodeData.txt.
-
-	* enc/unicode/name2ctype.h, enc/unicode/name2ctype.h.blt,
-	  enc/unicode/name2ctype.kwd, enc/unicode/name2ctype.src:
-	  follow above change. [ruby-dev:39444]
-
-Thu Oct  8 02:46:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_inspect): copy by chunks.
-
-Thu Oct  8 01:23:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (iseq_s_disasm): accept proc objects.  [ruby-core:18762]
-
-Wed Oct  7 16:42:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (mark_dump_arg, mark_load_arg): ignore already cleaned
-	  data.  [ruby-core:25969]
-
-	* marshal.c (clear_dump_arg, clear_load_arg): clear freed fields.
-
-Wed Oct  7 16:06:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_long2int): evaluates the argument only
-	  once.
-
-	* struct.c (rb_struct_alloc): check array length overflow.
-
-Wed Oct  7 09:23:49 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): don't assign -1 to unsigned int.
-
-Wed Oct  7 00:27:01 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS.bind_random_port): bind to "::" for IPv6.
-	  (Resolv::DNS::ConnectedUDP#initialize): specify is_ipv6 argument of
-	  bind_random_port.
-	  [ruby-core:25970]
-
-Tue Oct  6 23:32:38 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_upto): RDoc updated.  a patch from Nobuhiro
-	  IMAI <nov at yo.rim.or.jp> in [ruby-dev:39440]. [ruby-dev:39439]
-
-Tue Oct  6 21:30:58 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_reopen): avoid close if possible.
-
-Tue Oct  6 18:56:09 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_select): Struct#select should return
-	  enumerator when no block given.
-
-Tue Oct  6 06:26:00 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* * ext/tk/lib/tk/canvas.rb: *** POTENTIALLY INCOMPATIBLE ***
-	  'tags' option of a TkcItem object should give a list of TkcTag objs.
-
-	* ext/tk/lib/tkextlib/vu/dial.rb: fix logical bug.
-
-	* ext/tk/lib/tk/canvas.rb, ext/tk/lib/tkextlib/blt/component.rb:
-	  lack of support for methodcall_optkeys.
-
-Mon Oct  5 17:19:33 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator::public_api): take snapshot of
-	  public method at the beginning time.
-
-	* lib/delegate.rb (SimpleDelegator#initialize): use
-	  Delegator.public_api since public_method might be added after
-	  initialization.  [ruby-dev:39383]
-
-	* lib/delegate.rb (DelegateClass): ditto.
-
-Mon Oct  5 12:22:12 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_{times, shuffle_bang, sample}): reducing macro
-	  calls inside of the loop by keeping pointers in local
-	  variables. a patch from Masahiro Kanai (CanI) in [ruby-dev:39406].
-	  It was found and fixed at Security and Programming camp 2009.
-
-	* string.c (rb_str_{times, split_m}): ditto.
-
-	* struct.c (rb_struct_{getmember, set, aref_id, aset_id}, {make,
-	  inspect}_struct, recursive_{equal, hash, eql}): ditto.
-
-Mon Oct  5 00:09:57 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_method.c (basic_obj_respond_to): should not call
-	  #respond_to_missing? for not implemented methods.
-	  [ruby-core:25909]
-
-	* vm_method.c (rb_method_boundp): returns exceptional value 2 for
-	  not-implemented methods when called from #respond_to? (specifies
-	  by new constant NOEX_RESPONDS).
-
-	* method.h (enum): new constant NOEX_RESPONDS added.
-
-Sun Oct  4 22:16:29 2009  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/cookie.rb: add default value to @@accept_charset
-	  if have not defined. [ruby-dev:38987]
-
-	* lib/cgi/util.rb: ditto.
-
-Sun Oct  4 19:30:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (struct {dump,load}_arg): manage with dfree, instead
-	  of using local variable which may be moved by context switch.
-	  [ruby-dev:39425]
-
-Sun Oct  4 15:00:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (NATINT_LEN, pack_pack): suppressed warnings.
-
-Sun Oct  4 14:01:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems.rb (Gem::binary_mode): binary mode uses binary
-	  encoding.
-
-Sun Oct  4 08:27:10 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enum.c (slicebefore_ii): use id_eqq.
-
-Sun Oct  4 06:40:09 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/setup (ruby.mmp): added macro RUBY_EXPORT to match the
-	  change in dln.c
-
-Sun Oct  4 05:34:34 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/variable.rb: add TkVariable#to_hash,to_proc,to_int,
-	  to_str,to_ary
-
-Sun Oct  4 00:59:52 2009  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb: fix command-line option of
-	  non-interactive terminal. [ruby-core:23016]
-
-Sun Oct  4 00:40:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake/contrib: added.  [ruby-core:25918]
-
-Sat Oct  3 22:14:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (bv_decls, bvar): fix for block variables.
-	  [ruby-dev:39423]
-
-Sat Oct  3 21:19:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_add_method_def): no redefinition warning on
-	  undef.
-
-Sat Oct  3 18:51:11 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_f_integer): now Integer() takes optional base
-	  argument.  base will be ignored for non string values.
-	  suggested by Sam Carr at RubyFoo Lounge at London.
-
-	* test/ruby/test_integer.rb (TestInteger#test_Integer): test
-	  updated.
-
-Sat Oct  3 04:34:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (assignable_gen): parser_yyerror takes two arguments.
-
-Sat Oct  3 04:07:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake: updated to rake code to rake-0.8.7 source code base.
-
-	* lib/rake/loaders/makefile.rb (Rake::MakefileLoader#process_line):
-	  respace dependencies too.
-
-Sat Oct  3 02:59:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (assignable_gen): get rid of macro collision.
-
-Sat Oct  3 02:49:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (ary_make_shared): should count frozen array itself.
-
-Sat Oct  3 01:01:20 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/unicode/name2ctype.h: Updated to Unicode 5.2.0.
-
-Sat Oct  3 01:01:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: workaround for regexp metacharacters of expr in
-	  prefix path.
-
-Sat Oct  3 00:47:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ripper/dummyparser.rb (DummyParser): improvement by Magnus
-	  Holm in [ruby-core:25884].
-	  * remove scanner events which simply returned the first argument.
-	  * all parser events are now automatically generated.
-	  * simplify blocks.
-
-Sat Oct  3 00:43:52 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* method.h (rb_method_type_t): remove a comma at end of
-	  enumerator list.
-
-Sat Oct  3 00:31:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (discrete_object_p): needs the argument type to get rid
-	  of truncation on platforms where VALUE is larger than int.
-
-Fri Oct  2 22:30:15 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/unicode/name2ctype.h.blt, enc/unicode/name2ctype.kwd,
-	  enc/unicode/name2ctype.src: Updated to Unicode 5.2.0.
-	  NOTE: when you update these data, download UnicodeData.txt
-	  and Scripts.txt from http://www.unicode.org/Public/UNIDATA/
-	  and run
-	  ruby1.9 tool/enc-unicode.rb UnicodeData.txt Scripts.txt \
-	  > enc/unicode/name2ctype.kwd
-
-	* enc/unicode/Scripts.txt: removed.
-
-	* enc/unicode/UnicodeData.txt: removed.
-
-Fri Oct  2 20:49:19 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enum.c (enum_slice_before): take a pattern if no block given.
-
-Fri Oct  2 20:37:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (ripper_yylval_id, ripper_get_{id,value}): wrap ID by
-	  NODE to track local variable assignment.
-
-	* parse.y (lvar_defined_gen, assignable_gen): enable local
-	  variable check.  [ruby-core:24923]
-
-	* parse.y (validate): use value only.
-
-	* test/ripper/test_parser_events.rb (test_local_variables): tests
-	  based on a patch from Magnus Holm in [ruby-core:25885].
-
-Fri Oct  2 15:34:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (ruby_suppress_tracing): get rid of clobbering by
-	  longjmp.
-
-Fri Oct  2 09:20:35 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval.c (rb_origenviron): remove unused old variable.
-	  [ruby-dev:39412]
-
-Thu Oct  1 14:16:39 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/{setup.mak,Makefile.sub,win32.c},include/ruby/win32.h (RT_VER):
-	  split compiler specification and runtime library specification.
-
-	* win32/Makefile.sub (LD_SHARED*, config.status): no need to embed
-	  manifest if not exist.
-
-Thu Oct  1 13:23:14 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_getpid): simply call GetCurrentProcessId()
-	  instead of calling MSVCRT's getpid().
-
-Wed Sep 30 13:15:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_add_method_def): show the location where
-	  overwritten method was defined.  [ruby-dev:39400]
-
-Wed Sep 30 00:37:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (enumerator_block_call): extracted.
-
-Wed Sep 30 00:00:25 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): escape as \x{XXXX} when the encoding is
-	  other than Unicode. [ruby-dev:39388]
-
-Wed Sep 30 00:00:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (THREAD_MODEL): modified message when no thread
-	  model is available.
-
-Tue Sep 29 23:17:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_scan_open_args): rb_utf8mac_encoding is undefined.
-
-Tue Sep 29 22:25:41 2009  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_struct_iv_get): deprecated because it is
-	  not used and access internal structure.
-
-Tue Sep 29 22:19:36 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb (assert_equal): use Time#subsec if nsec
-	  is not enough to distinguish arguments.
-
-Tue Sep 29 21:16:35 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_scan_open_args): add UTF8-MAC to no-conversion encoding.
-
-Tue Sep 29 21:21:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (--enable-pthread): deprecated.
-
-Tue Sep 29 21:03:59 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/pp.rb (Kernel#pp): returns its arguments, like Kernel#p.
-	  [ruby-dev:34830]
-
-Tue Sep 29 17:02:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/json/lib/json/common.rb (recurse_proc): removed needless
-	  module_function, since visibility is already module_function.
-
-Tue Sep 29 13:48:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_method_definition_eq): non-null definition is
-	  not equal to null definition.
-
-	* vm_method.c (rb_add_method_def): nothing to do if old method had
-	  same definition.  [ruby-dev:39397]
-
-Tue Sep 29 06:50:32 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): dump as \uXXXX when the
-	  string is in Unicode. [ruby-dev:39388]
-
-Tue Sep 29 06:49:16 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_unicode_p): defined.
-	  Returns 1 when the encoding is Unicode series
-	  other than UTF-7 else 0.
-
-Tue Sep 29 04:14:08 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding): On Unix systems,
-	  filesystem encoding should be locale encoding.
-	  [ruby-dev:39393]
-
-Tue Sep 29 04:07:58 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* hash.c (rb_f_getenv): use rb_filesystem_str_new_cstr
-	  instead of rb_str_new2.
-	  ENV['PATH'].encoding should be Filesystem Encoding
-	  because its content is related to filesystem.
-	  see [ruby-dev:39393]
-
-	* hash.c (env_fetch): ditto.
-
-	* string.c (rb_filesystem_str_new): defined.
-
-	* string.c (rb_filesystem_str_new_cstr): ditto.
-
-	* include/ruby/intern.h (rb_filesystem_str_new): added.
-
-	* include/ruby/intern.h (rb_filesystem_str_new_cstr): ditto.
-
-Tue Sep 29 04:06:18 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/st.h: include inttypes.h and stdint.h.
-
-Tue Sep 29 00:07:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_f_getenv, env_fetch): env string may be overwritten.
-
-Mon Sep 28 23:30:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (load_lib, dln_find_exe_r): env string may be overwritten.
-
-	* dln.c (dln_{exit,loaderror,memerror,notimplement}): renamed as
-	  independent names.
-
-	* dln.c (aix_loaderror): needs format string.
-
-Mon Sep 28 19:36:20 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (LK_ERR): with overlapped I/O, LockFileEx() returns
-	  ERROR_IO_PENDING if the file is locked.
-
-Mon Sep 28 19:05:05 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* include/ruby/st.h: aligned prototype of st_hash_uint32 with function
-	  definition (fixing compiling problem on cygwin)
-
-Mon Sep 28 12:13:15 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* method.h (enum): new method type VM_METHOD_TYPE_MISSING.
-
-	* vm_eval.c (vm_call0): invoking VM_METHOD_TYPE_MISSING method
-	  objects.
-
-	* vm_insnhelper.c (vm_call_method): invoking method defined from
-	  VM_METHOD_TYPE_MISSING.
-
-	* proc.c (rb_method_entry_arity): ditto.
-
-	* vm_method.c (rb_method_entry_eq): two method object wraps
-	  method_missing with same symbol should be equal.
-	  [ruby-core:25755]
-
-	* proc.c (mnew): should always return method object.
-
-Mon Sep 28 11:38:07 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_tokadd_string): the byte after ``\'' may be a part of
-	  multibyte character, so pushback it. [ruby-list:46416]
-
-Mon Sep 28 10:06:38 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* stringio/stringio.c (strio_read): set ASCII-8BIT encoding
-	  when length argument is given.
-
-Mon Sep 28 01:28:17 2009  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* Makefile.in (miniruby): suppress duplication warning on AIX.
-
-Mon Sep 28 01:13:25 2009  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* common.mk (ruby.imp): add text section [Bug #2064].
-
-	* common.mk (ruby.imp): do not export Init_*.
-
-Sun Sep 27 13:06:43 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb (PP:ObjectMixin#pretty_print): delegates has no inspect
-	  method.  [ruby-core:25804]
-
-Sun Sep 27 12:01:42 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_buf_cat2): optimize since all second arguments are
-	  constant literals.
-
-	* string.c (str_cat_char): unused now.
-
-	* string.c (rb_hash_{uint{32,},end}): removed.
-
-Sun Sep 27 11:58:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (optflags): add -fomit-frame-pointer by default.
-
-Sun Sep 27 11:28:15 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enum.c (enum_minmax): use struct for memo.
-	  (enum_minmax_by): ditto.
-
-Sun Sep 27 10:21:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (warnflags): check all flags if each are available.
-
-Sun Sep 27 05:35:17 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/ext/generator/generator.c: Documentation patch by okkez.
-	  [Bug #2075]
-
-Sun Sep 27 04:20:55 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): result's encoding should be fixed.
-	  If default_internal is not nil, the encoding is default_internal.
-	  Else if default_external is not nil, the encoding is default_external.
-	  But the encoding is not ASCII-compatible, the encoding is replaced by
-	  US-ASCII.
-	  Characters in ASCII-incompatible encoding or non ASCII characters
-	  in other than the encoding will be \xXX escaped.
-	  [ruby-dev:39343]
-
-	* string.c (str_buf_cat2): defined.
-
-	* string.c (prefix_escape): removed.
-
-Sun Sep 27 05:37:45 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/missing-pips.c: Updated to work with the latest PIPS 1.6.
-
-	* symbian/setup: ditto.
-
-	* symbian/README.SYMBIAN: ditto.
-
-Sun Sep 27 02:00:46 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* string.c: use rename-macro instead of RUBY_ALIAS_FUNCTION_TYPE.
-	  Because build causes failure.
-
-Sat Sep 26 23:29:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c: moved murmur hash from string.c.  [ruby-dev:39376]
-
-Sun Sep 26 00:24:14 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/setup: Updated .mmp file generation due to blockinlining.c removal.
-
-Sat Sep 26 22:39:24 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Makefile.in(test-rubyspec): explicitly executes run subcommand of
-	  mspec.
-
-	* spec/README: typo fix
-
-Sat Sep 26 17:53:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c (COLLISION): improved collision log feature.
-
-	* string.c (hash): updated to MurmurHash 2.0 2009-09-19.
-
-	* string.c (rb_hash_start): fixed shift width on 128bit platform.
-
-	* include/ruby/intern.h (rb_hash_{start,uint32,uint,end}): fixed
-	  prototypes.
-
-Sat Sep 26 13:26:55 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/net/http.rb (transport_request): Handle timeout error by
-	  closing socket if exception raised. [ruby-core:20976]
-
-Sat Sep 26 12:08:17 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_method.c (rb_method_entry_eq): method defined from same
-	  block/proc should be equal.  [ruby-core:25755] [ruby-core:24791]
-
-Sat Sep 26 08:35:12 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (compile_string): rename to parse_string(), because
-	  this function only parse String to NODE.
-
-Fri Sep 25 16:01:45 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c, include/ruby/win32.h (rb_w32_access): new function to
-	  replace MSVCRT's access().
-	  [ruby-core:25761]
-
-	* file.c (eaccess): workaround for recent MSVCRT is no longer needed.
-
-Fri Sep 25 13:04:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (mnew): fix for instance method of Module, BasicObject
-	  and subclass of a class which overrides respond_to_missing?.
-	  based on a patch from Nikolai Lugovoi <nlugovoi AT gmail.com> in
-	  [ruby-core:25748].
-
-Fri Sep 25 11:56:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_mod_method_defined): should return true or false.
-
-Thu Sep 24 13:32:53 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (mnew): generate method object that wraps method_missing,
-	  when #respond_to_missing? is defined.
-
-	* test/ruby/test_object.rb (test_respond_to_missing): add test
-	  suites for #respond_to_missing? changes.
-
-Thu Sep 24 09:41:42 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/mathn.rb (Bignum#**): Fixed bignum**fixnum that was broken when
-	  requiring lib/mathn
-	  [ruby-core:25740]
-
-Thu Sep 24 02:21:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb (atan): atan(Infinity) is
-	  PI/2.
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb (atan): reduce loop with
-	  the double-angle formula.  based on a patch from Masahiro
-	  Kanai (CanI) in [ruby-dev:39367].
-
-Thu Sep 24 01:14:18 2009  Yutaka Kanemoto  <kanemoto@ruby-lang.org>
-
-	* dln.c (aix_loaderror): fixed typo. suppress warnings.
-
-Thu Sep 24 00:17:06 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enum.c (enum_minmax): reduce comparison.
-	  (enum_minmax_by): ditto.
-
-Wed Sep 23 22:58:57 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/thread.rb (ConditionVariable#wait): add timeout argument.
-	  [ruby-talk:346154]
-
-Wed Sep 23 21:25:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb (atan): refined.
-
-Wed Sep 23 17:08:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (assign_in_cond): also should warn assignment to dvar in
-	  conditional.  [ruby-dev:39363]
-
-Wed Sep 23 13:14:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_upto): keep first width.  [ruby-dev:39361]
-
-Wed Sep 23 11:28:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/instruction.rb (make_header_prepare_stack): check stack
-	  overflow.  [ruby-core:25714]
-
-	* tool/instruction.rb (make_footer_stack_val): ditto.
-
-Wed Sep 23 05:03:36 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* proc.c (umethod_bind, rb_mod_define_method): Fix bug that
-	  disallowed methods from singleton classes to be used for
-	  UnboundMethod#bind, Kernel#define_singleton_method and
-	  Module#define_method, even when that singleton class was of the right
-	  kind_of. A patch by Shane O'Brien [ruby-core:25632]
-
-Tue Sep 22 22:56:48 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_method.c (basic_obj_respond_to): new function to fundamental
-	  behavior for #respond_to?
-
-	* vm_method.c (basic_obj_respond_to): calls #respond_to_missing
-	  method if overridden, to check responsiveness of methods
-	  implemented by #method_missing.
-
-Tue Sep 22 16:34:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c (st_table_entry, st_get_key): use st_index_t.
-
-Tue Sep 22 16:28:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regenc.h (PosixBracketEntryType): constified.
-
-	* regenc.h (PosixBracketEntryInit): suppress warnings.
-
-	* regerror.c (onig_error_code_to_str, onig_snprintf_with_pattern):
-	  fixed type.
-
-	* regparse.c (st_str_end_key, str_end_cmp, str_end_hash):
-	  constified.
-
-	* tool/transcode-tblgen.rb (transcode_generated_code): fixed type.
-
-Tue Sep 22 10:29:06 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enum.c (enum_chunk): new method Enumerable#chunk.
-	* enum.c (enum_slice_before): new method Enumerable#slice_before.
-	  [ruby-dev:38392] [ruby-dev:39240]
-
-Tue Sep 22 05:58:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c, cont.c, gc.c, insns.def, iseq.c, iseq.h, process.c,
-	  thread.c, vm.c, vm_core.h, vm_dump.c, vm_eval.c,
-	  vm_insnhelper.c, vm_method.c, template/insns_info.inc.tmpl,
-	  tool/instruction.rb: fixed types.
-
-Tue Sep 22 05:04:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/lib/bigdecimal/{ludcmp,math}.rb: depend on
-	  bigdecimal.
-
-	* ext/bigdecimal/lib/bigdecimal/*.rb: made module functions.
-
-Tue Sep 22 04:47:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (GetVpValue): support conversion from
-	  Rational.  [ruby-core:25697]
-
-Tue Sep 22 04:43:42 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, win32/Makefile.sub (INSNS): depend on tools.
-
-Tue Sep 22 01:10:22 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* ossl_ocsp.c (ossl_ocspres_to_der): Bug fix in Response#to_def.
-	  Patch by Chris Chandler [ruby-core:18411]
-
-Tue Sep 22 01:10:02 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* ossl_config.c (ossl_config_add_value_m, ossl_config_set_section):
-	  Check if frozen (or untrusted for $SAFE >= 4) [ruby-core:18377]
-
-Mon Sep 21 17:12:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (proc_binding): allow proc from method.  [ruby-core:25589]
-
-	* vm.c (collect_local_variables_in_env): block iseq can be NULL.
-
-Mon Sep 21 10:50:37 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (rb_time_succ): make Time#succ obsolete since time is not
-	  a discrete value.
-
-	* range.c (discrete_object_p): treat time objects specially to
-	  determine discrete values, since time objects have #succ yet are
-	  discrete (for now at least).
-
-Mon Sep 21 10:13:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (cont_new, cont_capture, fiber_t_alloc): needs already
-	  running thread.  cf. [ruby-core:25681]
-
-Mon Sep 21 00:07:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/lib/bigdecimal/math.rb (sin, cos, atan, exp, log):
-	  improved precision and performance.  based on a patch from Makoto
-	  Yamashita in [ruby-core:25600] and [ruby-core:25602].
-
-Sun Sep 20 11:11:34 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* struct.c (rb_struct_equal, rb_struct_eql): Handle comparison of
-	  recursive structures [ruby-core:24759]
-
-	* range.c (range_eq, range_eql):  ditto for ranges
-
-Sat Sep 19 17:46:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (ENABLE_VM_OBJSPACE): socklist needs st_table in
-	  rb_w32_sysinit(), before object space initialization.
-
-Sat Sep 19 17:32:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (GlobPathValue), file.c (rb_get_path_check): path names
-	  must be ASCII compatible.
-
-Sat Sep 19 00:02:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_type): forward declaration to suppress a
-	  warning.  a patch from Naohisa Goto at [ruby-dev:39350]
-
-Fri Sep 18 23:59:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (GlobPathValue): adjust return types.  based on a patch
-	  from Naohisa Goto at [ruby-dev:39350].
-
-Fri Sep 18 23:51:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_object0): entry regexp object before its encoding
-	  name.  [ruby-core:25625]
-
-Fri Sep 18 16:29:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (eval.o): needs vm.h.
-
-	* eval.c (ruby_cleanup): destruct current VM before exit.
-
-	* gc.c (rb_objspace_free): free object space.
-
-	* vm.c (ruby_vm_destruct): destruct and free VM struct.
-
-Fri Sep 18 16:15:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each), parse.y (stmt, arg): arg_concat()
-	  on op_asgn was inversed.  [ruby-core:25629] [Bug #2050]
-
-Fri Sep 18 16:06:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (GlobPathValue): glob allows null bytes as separators.
-
-Fri Sep 18 10:11:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* doc/re.rdoc: use rdoc mode.
-
-	* misc/rdoc-mode.el: added.
-
-Fri Sep 18 09:02:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/rdoc.rb (RDoc::RDoc#parse_files): don't branch by
-	  RUBY_VERSION.
-
-	* lib/rdoc/rdoc.rb (RDoc::RDoc#parse_files): emacs local variables
-	  are delimited by a semicolon.  supported Vim style.
-
-Fri Sep 18 07:06:41 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/fileutils/test_fileutils.rb: add a test for [ruby-dev:39345]
-
-Fri Sep 18 06:47:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (push_glob): str should be a string always.
-
-	* dir.c (rb_push_glob, dir_globs): use #to_path to convert non-
-	  string values.  cf. [ruby-dev:39345]
-
-Fri Sep 18 06:36:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (rm_f, rm_rf): FileUtils.rm can take an array.
-	  [ruby-dev:39345]
-
-	* lib/mkmf.rb (create_header): open in binmode.
-
-Thu Sep 17 18:34:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (vm_xrealloc): free as like standard free if size is zero.
-
-Thu Sep 17 15:41:02 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_intern.h: use rb_node_newnode() directly.
-
-Thu Sep 17 15:01:32 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* blockinlining.c: removed.
-
-	* README.EXT: ditto.
-
-	* README.EXT.ja: ditto.
-
-Thu Sep 17 13:50:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_s_debug_set): set level, not only boolean.
-
-Thu Sep 17 13:12:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parser/ruby.rb (RDoc::Parser::Ruby): parse also rdoc
-	  files.
-
-	* doc/re.rdoc: renamed from re.rb.
-
-Thu Sep 17 09:37:28 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* doc/re.rb: New document for Ruby's fork of Oniguruma.
-	  written by Run Paint Run Run [ruby-core:25420]
-
-	* re.c: import document in doc/re.rb.
-
-	* .document: add doc/re.rb.
-
-Thu Sep 17 06:03:40 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb (Matrix#rank): Two bug fixes. One made
-	  Matrix[[0,0],[0,0],[1,0]].rank raise a NoMethodError while the other
-	  one had Matrix[[0,1],[0,0],[1,0]].rank raise a TypeError.
-
-Thu Sep 17 06:02:04 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb: Optimizations
-
-Thu Sep 17 00:36:01 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_mdump): error message refined.
-
-Wed Sep 16 19:27:43 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_thread.rb (TestThread#test_recursive): remove
-	  implementation dependent test.
-
-Wed Sep 16 17:42:52 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): install-capi needs docdir.  And,
-	  mandir, infodir and ridir are also depend on datadir like docdir.
-
-Wed Sep 16 17:20:49 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb (Matrix#/): Fix obvious bug
-
-Wed Sep 16 16:59:34 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (DOCTARGETS): rdoc is default.
-
-Wed Sep 16 16:27:40 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub: typo.
-
-Wed Sep 16 16:20:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (CAPITARGET): enable iff doxygen is available.
-
-	* configure.in (INSTALLDOC): enable if rdoc or doxygen are enabled.
-
-	* common.mk (docs): target to make documents.
-
-	* Makefile.in, win32/Makefile.sub (install-{all,nodoc}): trigger
-	  by $(INSTALLDOC) from install.
-
-Wed Sep 16 13:39:10 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb (determinant): Bug fix where determinant failed on
-	  some matrices [ruby-core:23597]
-
-Wed Sep 16 13:30:20 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/matrix.rb:  trivial optimizations
-
-Wed Sep 16 13:15:17 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* template/Doxyfile.tmpl: RbConfig::CONFIG['DOT'] is sometimes nil.
-
-Wed Sep 16 10:14:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja (rb_protect, rb_jump_tag): added.
-
-Wed Sep 16 10:12:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (main): makes also encs.
-
-Wed Sep 16 06:30:07 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* thread.c (rb_exec_recursive_outer, rb_exec_recursive): Added method
-	  to short-circuit to the outermost level in case of recursion
-
-	* test/ruby/test_thread.rb (test_recursive_outer): Test for above
-
-	* hash.c (rb_hash_hash): Return a sensible hash for in case of
-	  recursion [ruby-core:24648]
-
-	* range.c (rb_range_hash): ditto
-
-	* struct.c (rb_struct_hash): ditto
-
-	* array.c (rb_array_hash): ditto
-
-	* test/ruby/test_array.rb (test_hash2): test for above
-
-Wed Sep 16 06:17:33 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* vm_eval.c (rb_catch_obj, rb_catch, rb_f_catch): No longer use the
-	  obsolete function rb_iterate.
-
-Tue Sep 15 21:48:12 2009  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (--enable-frame-address): removed.
-
-Tue Sep 15 15:21:01 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/{configure.bat,Makefile.sub} (RDOCTARGET): the meaning of this
-	  macro was changed at r24923.
-
-Tue Sep 15 15:16:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (install-rdoc), configure.in (RDOCTARGET): removed
-	  circular dependency.  [ruby-dev:39339]
-
-Tue Sep 15 15:09:13 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/configure.bat: need a space before a tab to output the tab by
-	  echo.
-
-Tue Sep 15 14:24:52 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_split_m): use rb_isspace when the
-	  string may be ASCII-incompatible.
-
-	* string.c (rb_str_lstrip_bang): ditto.
-
-	* string.c (rb_str_rstrip_bang): ditto.
-
-Tue Sep 15 12:12:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_USE_BUILTIN_FRAME_ADDRESS): check after real
-	  target CPU is set.
-
-	* configure.in (RUBY_UNIVERSAL_ARCH): check real target CPU after
-	  AC_PROG_CC.
-
-Tue Sep 15 06:42:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (install-all): target to install all.
-
-	* tool/rbinstall.rb (parse_args): accept all install targets.
-
-	* tool/rbinstall.rb (parse_args): show help message and exit if
-	  rbconfig could not load.
-
-Tue Sep 15 04:25:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RDOCTARGET): use install-all.  [ruby-dev:39334]
-
-Tue Sep 15 03:00:35 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_lstrip_bang): use ascii_isspace().  [ruby-dev:39322]
-
-	* string.c (rb_str_rstrip_bang): ditto.
-
-	* string.c (rb_str_split_m): ditto.
-
-Mon Sep 14 16:39:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* debug.c, parse.y: fixed types.
-
-	* node.h (nd_line): limit to int.
-
-Mon Sep 14 11:23:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, common.mk, */configure.bat (rdoc): make before
-	  install if rdoc is enabled.  [ruby-dev:39325]
-
-Mon Sep 14 10:56:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (check-ruby): run all test of ruby itself.
-
-Mon Sep 14 10:44:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (RB_TYPE_P): should not use BUILTIN_TYPE for
-	  special constants.
-
-Mon Sep 14 10:08:19 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): use rb_enc_mbc_to_codepoint
-	  because we already knew char is found and got length.
-
-Mon Sep 14 09:59:03 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/ruby.h (NUM2INT, NUM2LL, INT2NUM, UINT2NUM),
-	  (LONG2NUM, ULONG2NUM, NUM2CHR): get rid of backward references of
-	  macros.  the code couldn't compile by VC.
-
-Mon Sep 14 08:33:11 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/net/http.rb (each_*): return enumerator if no block present.
-	  Patch by Arthur Schreiber [ruby-core:18310]
-
-Mon Sep 14 06:42:21 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/cgi/cookie.rb (value): Keep CGI::Cookie#value in sync with the
-	  cookie itself. Based on a patch by Arthur Schreiber [ruby-core:17634]
-
-Mon Sep 14 05:21:12 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/net/http.rb (fetch): Handle properly default values; a patch by
-	  Arthur Schreiber [ruby-core:18308]
-
-Mon Sep 14 04:07:09 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/set.rb (==): Optimization; patch by Arthur Schreiber [ruby-core:17203]
-
-Mon Sep 14 03:30:23 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/pre-build: added rule to generate id.h for Symbian build.
-
-	* symbian/configure.bat: fixed harmless error message.
-
-Sun Sep 13 22:18:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_mod_remove_const): do not change VM state when an
-	  exception will occur.
-
-Sun Sep 13 21:25:01 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (oletypelib_get_libattr): some refactoring
-	  by adding oletypelib_get_libattr.
-
-Sun Sep 13 20:55:19 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (oletypelib_get_typelib): some refactoring
-	  by adding oletypelib_get_typelib.
-
-Sun Sep 13 20:18:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_sflag, proc_options, load_file_internal): fixed
-	  types.
-
-Sun Sep 13 19:39:59 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: some refactoring.
-
-Sun Sep 13 19:38:34 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file_internal): no need to define DATA when error.
-
-Sun Sep 13 18:48:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (XLDFLAGS): link startup code with ObjC support.
-
-Sun Sep 13 13:38:00 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* thread.c (recursive_*): refactored the access to the inspect
-	  table used by rb_exec_recursive_*. The functions recursive_push,
-	  pop and check now assume a valid hash table as their first
-	  argument. Added documentation.
-
-Sun Sep 13 12:07:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (SYM2ID): needs parens.
-
-	* include/ruby/ruby.h (NUM2INT, NUM2LL, INT2NUM, UINT2NUM),
-	  (LONG2NUM, ULONG2NUM, NUM2CHR, rb_type_p, rb_special_const_p):
-	  GCC specific optimization.
-
-Sun Sep 13 11:06:12 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI::Meta#content_type_parse): strip quotes.
-
-Sun Sep 13 09:38:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/prime.rb (EratosthenesGenerator#initialize): call super.
-	  (TrialDivisionGenerator, Generator23): ditto.  [ruby-core:25539]
-
-Sun Sep 13 09:34:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_add_method_def): no warning for inherited
-	  method.
-
-Sun Sep 13 08:30:30 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: fix WIN32OLE_TYPELIB.new when the 1st
-	  argument is the non-registered file.
-
-Sun Sep 13 02:08:43 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h: change members of iseq_inline_cache_entry.
-	  make cache value members to one union member "ic_value".
-
-	* insns.def: ditto.
-
-	* vm_insnhelper.c: ditto.
-
-Sun Sep 13 01:15:49 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (URI::FTP#buffer_open): fix the %2F handling.
-
-Sun Sep 13 00:46:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (CALL_METHOD_HOOK): refined with macro.
-
-	* vm_method.c (rb_remove_method_id): no definition body is
-	  undefined.
-
-	* vm_method.c (rb_add_method, rb_add_method_me): call method added
-	  hook after definition.  [ruby-core:25536]
-
-	* vm_method.c (rb_alias): hooks are called from rb_add_method_def.
-
-Sat Sep 12 22:47:24 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (URI::FTP#buffer_open): use the port specified in
-	  the URI.
-
-Sat Sep 12 17:31:42 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (GCC): subst for GCC depending extension libraries.
-
-Sat Sep 12 07:52:59 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Invoke): initialize result
-	  variant value.
-
-Fri Sep 11 21:52:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* NEWS: update for 1.9.2.  based on a patch from Run Paint Run Run
-	  in [ruby-core:25534].
-
-Fri Sep 11 21:38:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check for real target cpu on darwin 10.
-
-Fri Sep 11 18:51:57 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/fileutils: use require_relative to require fileasserts.
-
-Fri Sep 11 14:22:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (debugflags): use gdb by default on linux and
-	  darwin.
-
-	* configure.in (XLDFLAGS): keep ARCHFILE macro on AIX.
-
-	* configure.in (RUBY_REPLACE_TYPE): define typename to default
-	  type if the latter is found.
-
-Fri Sep 11 13:57:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h (fstat): override if large file support is
-	  enabled.
-
-Fri Sep 11 11:33:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/config.{guess,sub}: updated to automake-1.11.
-
-Fri Sep 11 10:38:33 2009  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTPHeader::encode_kvpair): also call to_s
-	  to k.  A patch from swdyh <youhei@gmail.com>
-	  https://github.com/swdyh/ruby/tree/c847f43c2ccb679b9ff728f8b1b16c6ceeb57f39
-
-Fri Sep 11 09:45:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (aix_loaderror): get rid of using uninitialized value in the
-	  case loadquery fails.  fixed wrong index variable usage.  see
-	  [ruby-core:25479].
-
-Fri Sep 11 07:52:43 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* unicode.c (onigenc_unicode_property_name_to_ctype):
-	  ignore case of properties.
-
-	* tool/enc-unicode.rb: downcase properties list.
-
-	* enc/unicode/name2ctype.h, enc/unicode/name2ctype.h.blt,
-	  enc/unicode/name2ctype.kwd, enc/unicode/name2ctype.src:
-	  follow above.
-
-Fri Sep 11 05:00:19 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h (rb_data_type_t): Add comments.
-	  And add a member variable "data", a multi-purpose storage
-	  area for rb_data_type.
-
-Fri Sep 11 02:14:21 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/dl: use require_relative to require test_base.rb.
-
-Fri Sep 11 02:06:44 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (rb_char_to_option_kcode): ASCII-8BIT should
-	  also delay.
-
-	* re.c (parser_regx_options): return rb_ascii8bit_encindex on
-	  ASCII-8BIT. [ruby-dev:39300]
-
-Fri Sep 11 01:14:00 2009  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* lib/net/http.rb (fetch): rdoc fix, patch by Arthur Schreiber.
-	  [ruby-core:18309].
-
-Thu Sep 10 23:00:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): fix for parallel execution.
-	  [ruby-core:25509]
-
-Thu Sep 10 21:22:01 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/dl/test_cptr.rb (test_free=): test SEGV at first.
-	  [ruby-dev:39269]
-
-Thu Sep 10 21:20:59 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): Don't use
-	  AssertionMessage.
-
-Thu Sep 10 15:59:05 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regparse.c (UNKNOWN_ESC_WARN): added.
-
-	* regparse.c (conv_backslash_value): Warn unknown
-	  escaped chars in regexp. [ruby-dev:39104]
-
-Wed Sep  9 22:02:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::Entry_#copy_file): open the source
-	  file first to ensure it can be copied.  [ruby-core:25498]
-
-Wed Sep  9 21:20:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_data_type): typed.
-
-	* ext/dl/cfunc.c (dlcfunc_data_type): typed.
-
-	* ext/dl/cptr.c (dlptr_data_type): ditto.
-
-	* ext/dl/handle.c (dlhandle_data_type): ditto.
-
-Wed Sep  9 17:17:31 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (parser_regx_options): only one kcode should effect
-	  options [ruby-core:25411]
-
-Wed Sep  9 15:46:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_feature_provided): fixed for autoloading extension
-	  library without suffix.
-
-Wed Sep  9 15:24:32 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* include/ruby/st.h : revert previous commit.
-
-	* ext/objspace/objspace.c : remove st_memsize declare.
-
-Wed Sep  9 14:07:19 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* include/ruby/st.h : fix duplicate st_memsize declare.
-
-Wed Sep  9 13:33:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_autoload): initialize typed data.
-
-Wed Sep  9 13:10:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c (st_free_table): constified.
-
-Wed Sep  9 13:09:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_data_type): typed.
-
-	* enumerator.c (enumerator_data_type): typed.
-	  (yielder_data_type, generator_data_type): ditto.
-
-	* error.c (name_err_mesg_data_type): typed.
-
-	* file.c (stat_data_type): typed.
-
-	* thread.c (thgroup_data_type, mutex_data_type, barrier_data_type):
-	  typed.
-
-	* time.c (time_data_type): typed.
-
-	* transcode.c (econv_data_type): typed.
-
-	* variable.c (autoload_data_type): typed.
-
-Wed Sep  9 11:11:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_data_type_struct): constified dsize.
-
-Wed Sep  9 11:07:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (cont_memsize): fixed wrong expression on IA64.
-
-Wed Sep  9 10:51:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (cont_restore_1, rb_cont_call): should be Fiber.
-
-Wed Sep  9 00:27:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (cont_data_type, fiber_data_type): typed.
-
-Tue Sep  8 22:37:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb, lib/tmpdir.rb (Tmpname): extracted new module.
-	  [ruby-dev:39197]
-
-Tue Sep  8 22:18:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c (st_init_*table_with_size): use st_index_t.
-
-	* include/ruby/st.h (st_hash_func): use st_index_t.
-
-Tue Sep  8 21:48:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (rb_thread_mark): mark callers iseqs.  [ruby-core:25474]
-	  [Bug #2062]
-
-Tue Sep  8 11:53:58 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (iseq_mark): no need to mark inline cache entries.
-
-	* insns.def (onceinlinecache, setinlinecache): save a value
-	  to mark cached value.
-
-Tue Sep  8 08:32:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/dl/test_{cfunc,ptr}.rb: added tests from Aaron Patterson.
-	  see [ruby-dev:39249].
-
-Mon Sep  7 17:22:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_tell): adjustment for ungotten data.
-
-Mon Sep  7 17:13:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_encname_bom_p): removed magic number.
-
-Mon Sep  7 12:26:04 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/inspector.rb (IRB::INSPECTORS.def_inspector): support
-	  object without #inspect defined.  a patch from Daniel
-	  Bovensiepen.  [ruby-core:25200]
-
-Mon Sep  7 05:38:34 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (opt_*): add IC operands.
-
-	* vm_insnhelper.h (CALL_SIMPLE_METHOD): add a version which
-	  use an inline cache.  USE_IC_FOR_SPECIALIZED_METHOD macro
-	  switches the behaviour.  This change also removes
-	  CALL_SIMPLE_METHOD_IC() macro.
-
-	* tool/instruction.rb: fix elimination process to ignore
-	  variable "ic".
-
-Mon Sep  7 05:21:09 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* Makefile.in, common.mk: move a id.h generation rule.
-
-Mon Sep  7 05:07:59 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: remove RUBY_VERSION output.
-
-Mon Sep  7 05:06:16 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c: rename macro name ENABLE_IC_FOR_IVAR
-	  to USE_IC_FOR_IVAR.
-
-Mon Sep  7 03:21:40 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/common.rb (URI.escape): obsoleted.
-
-	* lib/uri/common.rb (URI.unescape): ditto.
-
-Sun Sep  6 18:13:54 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.h (CALL_SIMPLE_METHOD_IC): make a macro
-	  invoke simple method with inline cache entry.
-
-	* insns.def (opt_length, opt_size): fix to use inline method cache.
-
-Sun Sep  6 17:47:21 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* template/id.h.tmpl: fix this.
-
-	* id.h: removed.  Because this file is generated automatically.
-
-Sun Sep  6 17:31:28 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_specialized_instruction), insns.def (opt_size):
-	  optimize #size methods (by specialized instruction).
-
-	* id.c, id.h, vm.c, vm_insnhelper.h: ditto.
-
-Sun Sep  6 16:13:06 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (setinstancevariable), vm_insnhelper.c (vm_setivar):
-	  fix to use inline cache (trivial optimization).
-
-Sun Sep  6 10:34:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c: fixed rdoc, a patch from Nobuhiro IMAI at [ruby-core:25433].
-
-Sun Sep  6 05:19:09 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c: Add rdoc for ARGF.
-	  contributed by Run Paint Run Run. [ruby-core:23854]
-
-Sat Sep  5 15:21:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): op_asgn to aref should return rhs.
-	  [ruby-core:25387]
-
-Sat Sep  5 10:38:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): &&= and ||= should return rhs.
-	  [ruby-dev:39163] (#1996), [ruby-core:25143]
-
-Sat Sep  5 08:51:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (update_char_offset): position should be long.
-
-	* re.c (match_hash, match_equal): new methods.  [ruby-core:24748]
-
-	* re.c (reg_match_pos, rb_reg_eqq, rb_reg_s_quote): get rid of use
-	  VALUE as int.
-
-Fri Sep  4 20:40:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (round): added declaration.  [ruby-dev:39222]
-
-Fri Sep  4 06:15:39 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (Init_Dir): alias Dir#path to Dir#to_path.  [ruby-core:25326]
-
-Fri Sep  4 04:49:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (random_rand): fixed rdoc.  [ruby-core:25332]
-
-Fri Sep  4 04:46:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/webrick/httpservlet/abstract.rb (do_OPTIONS): method names
-	  are symbols now.  [ruby-core:24580]
-
-Thu Sep  3 17:56:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (literal_concat_gen): concat body from dstr instead of
-	  nd_next.  [ruby-core:25284]
-
-Wed Sep  2 16:49:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* math.c (math_gamma): get rid of direct comparison between too
-	  big double and integer, with gcc on x86_64.  [ruby-core:25257]
-
-Wed Sep  2 13:47:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* math.c (domain_check): simplified.
-
-Wed Sep  2 11:32:24 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (obj_free): fix to free method table (fix memory leak).
-
-Wed Sep  2 07:42:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/instruction.rb (RubyVM::InstructionsLoader#make_stackcaching_insns):
-	  simplified.
-
-Wed Sep  2 02:32:46 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/common.rb (NaN): Change definition
-	  of NaN to 0.0/0 for 1.8/1.9 compatibility.
-
-Wed Sep  2 01:16:32 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json: Update to JSON 1.1.9.
-
-Tue Sep  1 19:56:28 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_eval.c (eval_string_with_cref): fix to check local_table_size.
-	  [ruby-dev:39205] [Bug #2024]
-
-Mon Aug 31 16:20:41 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* class.c (make_singleton_class): variable name changed.
-	  removed an unnecessary conditional.
-
-Mon Aug 31 14:17:09 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* class.c: refactored singleton class related matters.
-	  Handles eigenclasses and plain classes transparently.
-
-	  (make_metaclass): renamed from make_metametaclass.
-	  (METACLASS_OF): new utility macro
-	  (META_CLASS_OF_CLASS_CLASS): ditto.
-	  (ENSURE_EIGENCLASS): ditto.
-	  (make_singleton_class): extracted from rb_singleton_class.
-	  (boot_defclass): moved from object.c
-	  (Init_class_hierarchy): extracted from Init_Object.
-	  (rb_make_metaclass): refactored.
-	  (singleton_class_of): extracted from rb_singleton_class.
-	  (rb_singleton_class): refactored.
-	  (rb_define_singleton_method): it needs a metaclass only
-	  but not its metametaclass.
-
-	* object.c: booting class hierarchy was moved to class.c
-	  for keeping dependency between compilation units least.
-	  (Init_Object): extracting the booting into
-	  Init_class_hierarchy.
-	  (boot_defclass): moved to class.c.
-
-Sun Aug 30 23:44:09 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (find_time_t): use mktime for the first guess.
-
-Sun Aug 30 16:38:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_enc_symname2_p): not depend on nul terminator.
-
-Sun Aug 30 14:11:45 2009  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk: dependencies updated.
-
-Sun Aug 30 13:00:11 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (add): shortcut implemented for fixnums.
-	  (sub): ditto.
-	  (mul): ditto.
-
-Sun Aug 30 10:24:43 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (eq): apply RTEST.
-	  (ne): ditto.
-	  (add): avoid method dispatch for bignums.
-	  (sub): ditto.
-	  (mul): ditto.
-	  (mod): ditto.
-
-Sun Aug 30 09:45:11 2009  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (bigmul1_single): new function specialized respect to
-	  multiply two single digit bignums.
-	  (bigmul0): use bigmul1_single.
-
-Sun Aug 30 03:59:43 2009  Tanaka Akira  <akr@fsij.org>
-
-	* timev.h (TIME_SCALE): defined as 1000000000.
-	  (struct vtm): subsec is replaced by subsecx.
-	  subsec * TIME_SCALE == subsecx.
-
-	* time.c: avoid rational in most cases.
-	  (struct time_object): timev is replaced by timexv.
-	  timev * TIME_SCALE == timexv.
-
-Sun Aug 30 03:17:25 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (init_leap_second_info): use TIMET_MAX.
-
-Sun Aug 30 01:15:31 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzfile_read_all): use gzfile_newstr;
-	  set and convert its encoding. [ruby-dev:38304]
-
-Sat Aug 29 20:40:02 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* vm_eval.c (rb_call0): gets rid of checking method cache twice.
-
-	* method.h (rb_get_method_entry): added a prototype of the function.
-	  (rb_method_entry_without_cache): more friendly name.
-
-Sat Aug 29 12:16:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tmpdir.rb (Dir.mktmpdir): rolled back r24699.  [ruby-dev:39193]
-
-Sat Aug 29 03:27:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#make_tmpname): removed thread race
-	  condition.
-
-	* lib/tmpdir.rb (Dir.mktmpdir): ditto.
-
-Fri Aug 28 20:29:34 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/tempfile.rb (Tempfile#callback): Debug information should be
-	  output to stderr, not stdout; pointed out by akira yamada.
-	  cf. [ruby-dev:39072]
-
-Fri Aug 28 20:34:24 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: use SafeStringValue instead of
-	  Check_SafeStr.
-
-Fri Aug 28 13:30:43 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (do_select): rollback r24680. void struct initializer is
-	  invalid.
-
-Fri Aug 28 11:45:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* method.h (rb_method_definition_t): split from rb_method_entry_
-	  to deal aliases.  [ruby-dev:39165]
-
-	* proc.c (struct METHOD): contains rb_method_entry_t copy.
-
-Fri Aug 28 10:21:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (iseq_mark): skip outdated cache entries.
-
-	* vm_core.h ({GET,INC}_VM_STATE_VERSION): moved from
-	  vm_insnhelper.h.
-
-Fri Aug 28 07:25:25 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (next_i): typo fixed (reached at end -> reached an
-	  end).  pointed out by James Edward Gray II at LoneStar RubyConf.
-
-Thu Aug 27 18:31:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_remove_method_id): exported.
-
-	* numeric.c (num_sadded): fix for non-ascii method name.
-
-Thu Aug 27 14:32:31 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_preprocess_dregexp): set encoding as ASCII-8BIT
-	  when /n is specified and the embedded string is escaped text.
-
-Thu Aug 27 13:51:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (random_rand): random integer can be a fixnum for
-	  bignum range.  [ruby-dev:39173]
-
-Thu Aug 27 08:16:34 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/strscan/strscan.c (strscan_set_string): set string should not be
-	  duped or frozen, because freezing it causes #concat method failure,
-	  and unnecessary to dup without freezing.  a patch from Aaron
-	  Patterson at [ruby-core:25145].
-
-Thu Aug 27 02:06:11 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* Makefile.in (enc/unicode/name2ctype.kwd):
-	  remove rules to generate name2ctype.kwd from
-	  UnicodeData.txt and Scripts.txt.
-	  if you want to generate, use tool/enc-unicode.rb.
-
-Thu Aug 27 02:00:09 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* unicode.c (PROPERTY_NAME_MAX_SIZE): use MAX_WORD_LENGTH.
-
-Wed Aug 26 23:59:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (random_rand): refined error message.
-
-	* random.c (random_rand): fixed for edge cases of ranges.
-	  [ruby-dev:39166]
-
-Wed Aug 26 21:49:23 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/tempfile.rb: add documents from Hongli Lai's fork.
-	  cf [ruby-core:25131].
-
-Wed Aug 26 19:51:13 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/mkconfig.rb (program_transform_name): fix for multiple trans
-	  rules for autoconf 2.61 or earlier.
-
-	* tool/rbinstall.rb (program_transform_name): ditto.
-
-Wed Aug 26 19:20:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (random_rand): unified random_int and random_float.
-	  [ruby-dev:39158].  and fixes [ruby-core:24655], [ruby-core:24677],
-	  [ruby-core:24679].
-
-Wed Aug 26 18:59:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/test_tempfile.rb: merged from Hongli Lai's fork.
-	  cf [ruby-core:25131].
-
-Wed Aug 26 18:49:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#close!): should not undefine finalizer
-	  by just unlink.
-
-Wed Aug 26 17:00:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/mkconfig.rb (program_transform_name): fix for autoconf 2.61
-	  or earlier.
-
-Wed Aug 26 14:34:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#close!, Tempfile#path): added side
-	  notes from Hongli Lai's fork.
-
-	* lib/tempfile.rb (Tempfile#unlink, Tempfile.callback): do nothing
-	  any more once unlinked.
-
-Wed Aug 26 13:48:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#unlink): reverted r23494, since the
-	  usage in RubyInline is considered wrong.
-
-Wed Aug 26 12:36:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (collect_local_variables_in_env): skips internal variables.
-	  [ruby-core:25125]
-
-Tue Aug 25 23:51:07 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/enc-unicode.rb: added for generate name2ctype.kwd.
-	  contributed by Run Paint Run Run [ruby-core:24775]
-
-	* enc/unicode.c (CodeRanges): move definitions to name2ctype.h.
-
-	* enc/unicode/name2ctype.h.blt, enc/unicode/name2ctype.kwd,
-	  enc/unicode/name2ctype.src: updated to v5.1.
-
-	* enc/unicode/UnicodeData.txt, enc/unicode/Scripts.txt: added v5.1.
-
-	* Makefile.in: add rule to generate name2ctype.kwd from
-	  UnicodeData.txt and Scripts.txt.
-
-Tue Aug 25 22:31:51 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in (MKDIR_P): Set 'mkdir -p' to MKDIR_P
-	  when AC_PROG_MKDIR_P doesn't set MKDIR_P.
-
-Tue Aug 25 17:38:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_clone, bigmul1_normal, bigdivrem): trivial
-	  optimization.
-
-	* bignum.c (big2dbl): truncates zero digits to get rid of possible
-	  underflow.
-
-Tue Aug 25 12:22:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (enc/unicode/name2ctype.h): explicitly ignores the
-	  result of diff and turns -e option off, because *BSD make passes
-	  it by default.
-
-Tue Aug 25 02:16:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (DLDFLAGS): use linker_flag and changed undefined
-	  and multiply_defined behaviors. cf [ruby-core:25086].
-
-Mon Aug 24 21:31:37 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb, test/rss/test_maker_2.0.rb: fix a bug
-	  that RSS Maker doesn't accept 'false' as guid's isPermaLink.
-	  Reported by Joe Holt. Thanks!!!
-
-Mon Aug 24 18:58:56 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/missing.h (vsnprintf): rollback a part of r24179, because
-	  it's meaningless.
-
-Mon Aug 24 16:35:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c (st_delete_safe): deals with packed entries.
-	  [ruby-core:25080]
-
-	* st.c (st_cleanup_safe): ditto.  [ruby-core:25081]
-
-Mon Aug 24 13:24:07 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (MAKEDIRS): define.
-
-	* common.mk (capi): using $(MAKEDIRS), so depends on $(PREP).
-
-Mon Aug 24 13:14:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_SIZEOF): set cross_compiling only when
-	  universal binary.
-
-Mon Aug 24 12:55:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (enc/unicode/name2ctype.h): use md instead of
-	  $(MAKEDIRS).
-
-Sun Aug 23 15:22:45 2009  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (main): "usage" description updated.
-
-Sun Aug 23 15:12:22 2009  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (Dir.mktmpdir): updated to latest.
-	  (in_temporary_working_directory): temporary directory name changed.
-
-Sun Aug 23 00:56:13 2009  Tanaka Akira  <akr@fsij.org>
-
-	* thread.c (rb_thread_schedule): don't recur infinitely.
-	  (rb_threadptr_execute_interrupts): ditto.
-	  [ruby-dev:38060]
-
-Sat Aug 22 15:07:23 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/syck/rubyext.c (id_hash_new): new function to create a hash
-	  which key is compared by object id.
-	  (syck_emitter_reset): use id_hash_new for bonus->data.
-
-	* lib/yaml.rb (YAML.quick_emit): give the object itself to emitter.
-	  don't use object_id and hash.
-
-Sat Aug 22 13:05:22 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* Makefile.in: use CP and MV macros.
-
-Sat Aug 22 01:29:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (rm_f, rm_rf): pass the last hash through if exists.
-	  [ruby-dev:39153]
-
-Sat Aug 22 00:48:08 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enumerator.c (ary2sv): add dup argument.
-	  (enumerator_next): call ary2sv with dup=0.
-	  (enumerator_peek): call ary2sv with dup=1 to return duplicated array.
-	  (enumerator_peek_values_m): new function to return duplicated array.
-	  (Init_Enumerator): use enumerator_peek_values_m as
-	  Enumerator#peek_value.
-
-Sat Aug 22 00:03:19 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_check_deadlock): decrease number of sleepers before
-	  deadlock detection because the deadlock exception makes main thread
-	  run.  [ruby-dev:39142]
-
-Fri Aug 21 22:34:58 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enumerator.c (get_next_values): extracted from
-	  enumerator_next_values.
-	  (enumerator_next_values): use get_next_values.
-	  (enumerator_peek_values): ditto.
-
-Fri Aug 21 17:01:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/unicode/name2ctype.h: split from enc/unicode.c and made a
-	  perfect hash.
-
-Fri Aug 21 15:13:08 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/io.h, io.c (FMODE_SETENC_BY_BOM):
-	  renamed from FMODE_STRIP_BOM.
-
-Thu Aug 20 01:24:55 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_io_fmode_modestr): change modestr syntax for BOM
-	  to "BOM|UTF-*". [ruby-dev:39106]
-
-	* io.c (parse_mode_enc): ditto.
-
-Fri Aug 21 15:01:35 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_readline): use rb_prep_terminal
-	  only on Windows.
-
-Fri Aug 21 07:25:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/ri/gemdirs.rb: split from lib/rdoc/ri/paths.rb to ge
-	  rid of loading rubygems and searching all gems always.
-
-Fri Aug 21 07:14:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_PROGRAM_VERSION, RUBY_RELEASE_DATE): extracts
-	  from version.h for cross-compiling.
-
-	* template/fake.rb.in (RUBY_VERSION, RUBY_DESCRIPTION): use above.
-
-Fri Aug 21 00:08:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/ri/paths.rb (RDoc::RI::Paths): Gem::Enable has been obsolete.
-
-Thu Aug 20 23:56:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_sysopen): moved sysopen_struct from rb_sysopen_internal.
-
-Thu Aug 20 23:39:51 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (reduce_nodes_gen): preserve NODE_FL_NEWLINE flag during
-	  node reducing.  [ruby-core:24463]
-
-Thu Aug 20 14:39:47 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_get): add rl_prep_terminal(1).
-	  incited by jitte [ruby-list:43546]
-
-Thu Aug 20 12:09:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (ivar2_hash_type): disabled for now.
-
-Thu Aug 20 08:39:50 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_thread_terminate_all): do not ignore interrupt when
-	  reaping threads on termination.  [ruby-dev:39107]
-
-Thu Aug 20 02:32:08 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enumerator.c (next_init): don't clear feedvalue.
-
-Thu Aug 20 01:28:42 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enumerator.c: implement Enumerator#{next_values,peek_values,feed}
-	  and StopIteration#result.  [ruby-dev:39109]
-	  (struct enumerator): replace no_next by stop_exc.
-	  new field feedvalue.
-	  (enumerator_mark): mark feedvalue and stop_exc.
-	  (enumerator_init): initialize feedvalue and stop_exc.
-	  (enumerator_init_copy): initialize feedvalue.
-	  (next_ii): send yield arguments as an array.  return feedvalue.
-	  (next_i): generate StopIteration exception here.  set result.
-	  (next_init): initialize feedvalue.
-	  (enumerator_next_values): new method Enumerator#next_values.
-	  (ary2sv): new function.
-	  (enumerator_peek_values): new method Enumerator#peek_values.
-	  (enumerator_feed): new method Enumerator#feed.
-	  (yielder_yield): return the yield value.
-	  (generator_each): return the iterator value.
-	  (stop_result): new method StopIteration#result.
-
-Thu Aug 20 01:06:48 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (DEFINE_STRUCT_DIRENT): use union to allocate sufficient
-	  memory space for Solaris.  a patch from Naohisa GOTO
-	  <ngoto at gen-info.osaka-u.ac.jp> in [ruby-dev:39132].
-	  [ruby-dev:39062]
-
-	* configure.in (SIZEOF_STRUCT_DIRENT_TOO_SMALL): Solaris dirent
-	  check.
-
-Wed Aug 19 11:32:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/unicode.c (CodeRanges): initialized statically.
-
-Wed Aug 19 02:54:01 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_settracefunc.rb (test_return, test_return2): add two
-	  tests for [ruby-dev:38701] and [ruby-core:24463].
-
-Wed Aug 19 01:08:34 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (NODE_RETURN): fire return event at explicit return.
-	  [ruby-dev:38701]
-
-Tue Aug 18 21:00:26 2009  Tanaka Akira  <akr@fsij.org>
-
-	* enumerator.c (enumerator_peek): new method Enumerator#peek.
-	  (enumerator_next): don't rewind at end.
-	  [ruby-dev:38932]
-
-Tue Aug 18 13:46:14 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* touch test/rdoc/empty.dat to run test_rdoc_parser.rb
-
-Tue Aug 18 11:37:24 2009  wanabe  <s.wanabe@gmail.com>
-
-	* vm_insnhelper.c (vm_call_cfunc): ensure hook c-return.
-	  [Bug #1588]
-
-	* test/ruby/test_settracefunc.rb (TestSetTraceFunc#test_raise):
-	  follow above.
-
-Tue Aug 18 01:57:00 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): treat symbols specially so that iterating
-	  over symbols should work like strings.  [ruby-core:24780]
-
-	* range.c (range_each): ditto.
-
-Tue Aug 18 01:21:31 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_each): should honor to_str conversion.
-
-Mon Aug 17 23:45:40 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/delta.rb: removed require 'date'.  added to_c.
-
-Mon Aug 17 14:35:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (lex_get_str, lex_io_gets, rb_parser_compile_string):
-	  must be ascii compatible.
-
-Mon Aug 17 10:37:41 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regparse.c (add_code_range_to_buf0): added with checkdup argument.
-
-	* regparse.c (add_code_range_to_buf): use above.
-
-	* regparse.c (add_code_range0): added with checkdup argument.
-
-	* regparse.c (add_code_range): use above.
-
-	* regparse.c (i_apply_case_fold): don't warn if the duplicate is
-	  caused by case folding.
-
-Mon Aug 17 08:31:56 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/delta.rb: merged from date4.  [experimental]
-
-	* lib/date/delta/parser.*: ditto.
-
-	* lib/date.rb: followed the above changes.
-
-Mon Aug 17 08:19:03 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (strptime): removed \v; since \s includes \v.
-
-Mon Aug 17 08:14:26 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_rationalize) added.  [experimental]
-
-	* rational.c ({nurat,nilclass,integer,float}_rationalize) ditto.
-
-Mon Aug 17 08:11:53 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb: use num#i.
-
-Mon Aug 17 07:59:00 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c (flo_pow,fix_pow): may return complex number.
-
-	* bignum.c (rb_big_pow): ditto.
-
-Mon Aug 17 07:16:10 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_imaginary): num#i to return imaginary counterpart
-	  of the given numeric.
-
-	* complex.c (Init_Complex): undef #i for complex numbers.
-
-Mon Aug 17 00:17:33 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/complex.rb, lib/rational.rb: added warning messages.
-
-Sun Aug 16 23:58:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (yylex): should dispatch scan-event even when follows
-	  just after delayed-token.  [ruby-dev:37855] [Bug #1071]
-
-Sun Aug 16 22:20:16 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: reverted.
-
-Sun Aug 16 21:31:21 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/date/format.rb: suppressed a warning.
-
-	* lib/irb/ruby-lex.rb: ditto.
-
-Sun Aug 16 15:25:26 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/csv.rb: Change magic comment to US-ASCII in order to
-	  make literals as US-ASCII.
-
-Sun Aug 16 10:45:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regparse.c (parse_char_class, parse_exp, parse_branch),
-	  (parse_subexp): fixed memory leak.  a patch from Ralf Junker
-	  <ralfjunker AT gmx.de> at [ruby-core:24921].
-
-Sun Aug 16 10:38:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_backtrace_each, vm_backtrace_push),
-	  vm_eval.c (print_backtrace), vm_dump.c (bugreport_backtrace):
-	  rb_backtrace_iter_func now takes VALUE as file and method names.
-
-Sun Aug 16 03:06:59 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (opt_eq_func): fix optimization bug.  This issue
-	  was found out and debugged with Takuto Hayashi at Security and
-	  Programming camp 2009.
-
-Sun Aug 16 01:10:00 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regparse.c (add_ctype_to_cc_by_range): fix the first
-	  character bigger than sb_out was dropped.
-
-	* test/ruby/test_regexp.rb (TestRegexp#test_posix_bracket):
-	  add tests for above.
-
-Sun Aug 16 00:30:33 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/oniguruma.h
-	  (ONIGENC_CTYPE_SPECIAL_MASK): added.
-	  (ONIGENC_CTYPE_D): ditto.
-	  (ONIGENC_CTYPE_S): ditto.
-	  (ONIGENC_CTYPE_W): ditto.
-
-	* regparse.c: \d, \s and \w are now non Unicode class.
-	  [ruby-dev:39026]
-	  (fetch_token_in_cc): use ONIGENC_CTYPE_[DSW] for \d/\s/\w.
-	  (fetch_token): ditto.
-	  (add_ctype_to_cc): add routines for ONIGENC_CTYPE_[DSW].
-	  (parse_exp): ditto.
-
-	* test/ruby/test_regexp.rb (TestRegexp#test_char_class):
-	  add tests for above.
-
-Sat Aug 15 10:39:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (fname, string_dvar, sym, dsym, f_arglist): removed
-	  duplications.
-
-Fri Aug 14 20:03:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_check_safe_str): deprecated.
-
-	* ext/openssl/ossl_x509store.c (ossl_x509store_add_{file,path}):
-	  replaced deprecated function.
-
-Fri Aug 14 17:59:12 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_preprocess_dregexp): change Exception class to
-	  RegexpError.
-
-	* test/ruby/test_m17n.rb (test_regexp_usascii): follow above.
-
-	* test/ruby/test_m17n.rb (test_regexp_embed): ditto.
-
-Fri Aug 14 17:17:42 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/Makefile.in (MKDIRS): revert r24525.
-
-Fri Aug 14 16:28:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/lib/digest/hmac.rb (Digest::HMAC#initialize): faster
-	  code.
-
-Fri Aug 14 14:31:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rubyhdrdir): fixed typo.  [ruby-dev:39079]
-
-Fri Aug 14 00:29:22 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* doc/ChangeLog-1.8.0: add forgotten entry contributed by
-	  TAKAHASHI Kaoru.  [ruby-dev:39065]
-
-Fri Aug 14 00:19:49 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator#method_missing): __FILE__ may contain
-	  multi-byte characters.  a patch from Kenta Murata in [ruby-dev:39066].
-
-Thu Aug 13 21:01:03 2009  wanabe  <s.wanabe@gmail.com>
-
-	* vm.c (vm_exec): returning from lambda runs ensure section.
-	  [Bug #1729]
-
-Thu Aug 13 18:40:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_SIZEOF): set cross_compiling to yes
-	  only when AC_COMPUTE_INT, and inverted the arguments.
-
-Thu Aug 13 18:22:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_SIZEOF): use AC_COMPUTE_INT instead of
-	  _AC_COMPUTE_INT_COMPILE with cross compiling, since its arguments
-	  have been changed at autoconf 2.64.
-
-Thu Aug 13 16:31:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (opt_case_dispatch): suppressed a warning.
-
-	* vm_insnhelper.c (opt_case_dispatch_i): ditto.
-
-Thu Aug 13 16:20:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, Makefile.in (MAKEDIRS): used MKDIR_P instead of
-	  as_mkdir_p.  [ruby-dev:39063]
-
-Thu Aug 13 15:37:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regenc.c (onigenc_strlen_null, onigenc_str_bytelen_null): fixed
-	  infinite loop for wide encodings.  reported by Ralf Junker a
-	  [ruby-core:24892].  [ruby-core:24904]
-
-Wed Aug 12 21:07:46 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: if ipv6 is enabled, the version of Windows
-	  must be XP or later.
-	  [ruby-core:24601]
-
-Wed Aug 12 15:59:29 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (yes-test-knownbug): use RUNRUBY instead of MINIRUBY.
-
-Wed Aug 12 15:52:04 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* class.c (rb_define_module_id_under): fix the name.
-
-	* class.c (rb_define_module_under): fix for previous changes.
-
-Wed Aug 12 15:32:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_define_class_id_under, rb_define_module_id_under):
-	  new functions to define a nested class/module with non-ascii
-	  name.
-
-	* struct.c (make_struct): use name with encoding.
-
-	* struct.c (inspect_struct): ditto.  [ruby-core:24849]
-
-Wed Aug 12 Wed Aug 12 14:54:34 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def, vm.c, vm_insnhelper.c, vm_insnhelper.h: check
-	  definition of (classes)#=== for case/when optimization.
-	  Fix Bug #1376 [ruby-core:23190].
-
-	* string.c (Init_String), bignum.c (Init_Bignum),
-	  numeric.c (Init_Numeric): define String#===, Symbol#===,
-	  Bignum#===, Fixnum#===, Float#=== as same as (classes)#==.
-
-Wed Aug 12 14:14:42 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (readdir_internal): free old temporary filename.
-	  [ruby-core:24820]
-
-Wed Aug 12 12:59:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_new_frozen): must not change encoding of frozen
-	  shared string.  [ruby-dev:39068]
-
-Wed Aug 12 11:51:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_broken_crypt): needs more checks.
-
-Wed Aug 12 07:41:31 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): If a string is empty and
-	  other's encoding is US-ASCII, returns the empty string's encoding.
-	  [ruby-list:46274]
-
-Wed Aug 12 07:38:12 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (is_data_encoding): fix condition.
-
-	* encoding.c (enc_capable): ditto.
-
-Tue Aug 11 23:12:31 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (complete_frags): Monday must be suitable for %W's
-	  default day.
-
-Tue Aug 11 21:42:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (num_divmod): fixed rdoc.  [ruby-core:24862]
-
-Mon Aug 10 21:45:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_path2class): no deprecation.
-
-Mon Aug 10 10:57:59 2009  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c: reject unused longlife gc. longlife gc target is longlife
-	  NODE by method table and vm inline cache. but, fixed it at
-	  r24085, r24128. so I rejected longlife gc.
-
-	* debug.c: ditto.
-
-	* include/ruby/intern.h: ditto.
-
-	* include/ruby/ruby.h: ditto.
-
-	* iseq.c: ditto.
-
-	* node.h: ditto.
-
-	* vm_insnhelper.c: ditto.
-
-	* vm_insnhelper.h: ditto.
-
-Mon Aug 10 06:55:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (class2path, w_unique, w_extended, w_class, w_uclass):
-	  deal with non-ascii class path.  [ruby-core:24790]
-
-	* marshal.c (r_unique, path2class, path2module, obj_alloc_by_path),
-	  (r_object0): ditto.
-
-	* variable.c (rb_path_to_class): new encoding-aware function to
-	  get a class from its name.
-
-Sun Aug  9 21:14:03 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb (search_tclConfig): last change isn't enough.
-	  fixed it.
-
-Sun Aug  9 16:36:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ruby.imp): excluded prelude.o to get rid of circular
-	  dependency.  [ruby-dev:39052]
-
-Sun Aug  9 14:49:24 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (rb_big_cmp, bigsub, big_real_len, bigmul1_normal,
-	  bigmul1_balance, big_split): remove BDIGITS() inside of the loops.
-	  same as r24444.
-
-Sat Aug  8 17:03:21 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_ascii_compatible_p): added. [ruby-core:24793]
-	  (Init_Encoding): New API Encoding#ascii_compatible?.
-
-Sun Aug  9 07:25:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/ripper/eventids2.c (token_to_eventid): added
-	  keyword_do_LAMBDA.  [ruby-dev:39049]
-
-Sun Aug  9 02:07:41 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/compile_prelude.rb: fixes a regexp pattern for require.
-	  It had matched 'require("foo"('.
-
-Sat Aug  8 11:42:44 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigzero_p): removing BDIGITS() inside of the
-	  loop. inspired by Masahiro Kanai's blog entry
-	  <http://d.hatena.ne.jp/CanI/20090807/1249657492>.
-
-Sat Aug  8 06:18:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_symbol r_symlink, r_symbol, r_object0): fix for
-	  non-ascii symbols.  loading such symbols can cause segfaults in
-	  older versions.  [ruby-core:24788]
-
-Fri Aug  7 03:25:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_error.c (error_print): removed an extra argument.
-
-Fri Aug  7 03:22:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_exc_raise, rb_exc_fatal): nil is used to reraise.
-
-Fri Aug  7 01:49:41 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/sha2/sha2.c: The ULL suffix is not supported by
-	  pre-C99 compilers, so resurrect the ULL() macro to regain
-	  portability. [ruby-dev:39032]
-
-Fri Aug  7 01:35:26 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/*/extconf.rb: inttypes.h and unistd.h need not be
-	  checked here. [ruby-dev:39032]
-
-Fri Aug  7 01:04:17 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb (search_tclConfig): fix logic bug.
-
-Thu Aug  6 21:18:15 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/digest/sha2/lib/sha2.rb: should require sha2.so.
-
-Thu Aug  6 21:11:40 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/digest/sha2/sha2.c (*_Final): typos.
-
-Thu Aug  6 19:46:56 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/sha2/sha2.h (BYTE_ORDER): Define BYTE_ORDER as
-	  necessary. [ruby-dev:39029]
-
-Thu Aug  6 16:36:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (valid_encoding_name_p): rejects too long encoding
-	  names.
-
-	* encoding.c (encoding_data_type): typed data.
-
-	* encoding.c (enc_capable, rb_enc_get_index): Symbol is encoding
-	  capable.
-
-	* encoding.c (rb_enc_associate_index): cannot set encoding on
-	  special constants.
-
-Thu Aug  6 15:44:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_method_entry_eq): deals with optimized method
-	  properly.  [ruby-core:24789]
-
-Thu Aug  6 13:30:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/mkmf/base.rb (TestMkmf): was turned into a class, because
-	  MiniUnit doesn't complain even if a testcase has no tests.
-
-Thu Aug  6 13:00:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (check_sizeof): added optional compiler option
-	  argument.  [ruby-core:24785]
-
-	* lib/mkmf.rb (create_makefile): suppressed shadowing outer local
-	  variable warnings.
-
-Thu Aug  6 12:05:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/testcase.rb (Test::Unit): removes silly TestCase
-	  class.
-
-Thu Aug  6 01:37:20 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/digest/sha2/sha2.[ch]: Update to 1.0 RELEASE which fixes an
-	  off-by-one bug in SHA-256 hashing.  Reduce differences from
-	  the original while at it. [Bug #1799]
-
-Thu Aug  6 00:09:56 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb (IPAddr#hash): Take account of netmask; submitted
-	  by Nobuhiro IMAI in [ruby-dev:39011]
-
-Wed Aug  5 19:19:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file_internal): assumes -x flag if no "ruby" is in
-	  the shebang line.  [ruby-dev:39015]
-
-Wed Aug  5 19:11:01 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (rb_stdio_set_default_encoding): declared.
-
-Wed Aug  5 18:46:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* debug.c (ruby_dummy_gdb_enums): made public.  [ruby-dev:39001]
-
-Wed Aug  5 13:49:09 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_upto): generate numerical sequence when
-	  characters in both edges are all digits.  [ruby-talk:343186]
-
-Wed Aug  5 12:54:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_exc_raise, rb_exc_fatal): require exception object.
-	  [ruby-core:24767]
-
-Wed Aug  5 12:39:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_longjmp): reset raised flag before fatal error.
-
-Wed Aug  5 10:20:39 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_preprocess_dregexp): add options to arguments.
-
-	* re.c (rb_reg_new_ary): follow above.
-
-	* re.c (rb_reg_preprocess_dregexp): change error message when
-	  /.../n has a non escaped non ASCII character in non ASCII-8BIT
-	  script. [ruby-dev:38524]
-
-Wed Aug  5 03:28:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit.setup_argv): expands paths before
-	  requiring.  [ruby-dev:39012]
-
-Wed Aug  5 01:38:27 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/pp.rb (guard_inspect_key): untrust internal hash to prevent
-	  unexpected SecurityError.
-
-	* test/ruby/test_object.rb: add a test for [ruby-dev:38982].
-
-Wed Aug  5 00:33:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parser/c.rb: fixed a small error in the documentation.
-	  [ruby-core:24744]
-
-Tue Aug  4 22:10:34 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (has_redirection): need to execute shell if commandline
-	  includes newline.  cf. [ruby-core:24560]
-
-Tue Aug  4 15:06:58 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb (IPAddr#{eql?,hash}): Add IPAddr#{eql?,hash} so
-	  that an IPAddr object can be used as a hash key, a set element,
-	  etc.; suggested by Nick Brown <nick@nick-brown.com>.
-
-Tue Aug  4 13:07:10 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (ONIG_SYN_WARN_CC_DUP): defined.
-	* regparse.h (ScanEnv): add warnings_flag.
-	* regparse.c (CC_DUP_WARN): defined for warn duplicated characters in
-	  character class of regexp. [ruby-core:24593]
-	  (add_code_range_to_buf): add CC_DUP_WARN.
-	  (next_state_val): add CC_DUP_WARN.
-	  (OnigSyntaxRuby): add ONIG_SYN_WARN_CC_DUP.
-	  (SET_ALL_MULTI_BYTE_RANGE): add env to arguments.
-	  (add_code_range): ditto.
-	  (add_code_range_to_buf): ditto.
-	  (not_code_range_buf): ditto.
-	  (or_code_range_buf): ditto.
-	  (and_code_range1): ditto.
-	  (and_code_range_buf): ditto.
-	  (and_cclass): ditto.
-	  (or_cclass): ditto.
-	  (add_ctype_to_cc_by_range): ditto.
-	  (add_ctype_to_cc): ditto.
-	  (parse_char_class): ditto.
-
-Tue Aug  4 12:40:45 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/encdb.c (ENC_SET_BASE): fix typo.
-	  patch by ujihisa [ruby-dev:39004]
-
-Tue Aug  4 11:57:39 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_eql, range_eq): fixed equality to work for
-	  subclasses of Range.  a patch from Marc-Andre Lafortune.
-	   [ruby-core:22190]
-
-	* test/ruby/test_range.rb: add assertions for above.
-
-Tue Aug  4 09:41:11 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/big5.c (EncLen_Big5): back to original Big5 table.
-	  (EncLen_Big5_HKSCS): for Big5-HKSCS.
-	  (trans): add the lead byte table for Big5-HKSCS.
-	  (big5_mbc_enc_len): abstract function for Big5 series.
-	  (big5_mbc_enc_len): for Big5.
-	  (big5_hkscs_mbc_enc_len): for Big5-HKSCS.
-	  (BIG5_HKSCS_P): added.
-	  (BIG5_ISMB_FIRST): add routine for Big5-HKSCS.
-	  (big5_hkscs): add for Big5-HKSCS.
-
-Tue Aug  4 09:33:54 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_set_base): Add for setting base encoding
-	  with their names. this is internal function.
-
-	* template/encdb.h.tmpl: specify ENC_SET_BASE for second encodings in
-	  each encoding files.
-
-	* enc/encdb.c (rb_enc_set_base): add a declaration.
-	  (ENC_SET_BASE): ditto.
-
-Tue Aug  4 06:30:01 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_replace): should copy compare_by_identity status as well.
-	  [ruby-core:24728]
-
-Tue Aug  4 05:43:03 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (recursive_push): need to set UNTRUST.  [ruby-dev:38997]
-
-Tue Aug  4 03:56:51 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tcltklib.c: fix trouble on old-style C function
-	  declarations [ruby-core:22871].
-
-	* ext/tk/lib/tcltklib.c: (ruby_1_8) fix warning about RUBY_RELEASE_DATE
-
-	* ext/tk/lib/tk/multi-tk.rb: kill zombie threads.
-
-	* ext/tk/lib/tk/fontchooser.rb: fix typo and support OptionObj.
-
-	* ext/tk/lib/tk/{canvas.rb,virtevent.rb,image.rb,timer.rb}:
-	  don't create unnecessary array.
-
-Mon Aug  3 22:19:24 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval.c (rb_mod_include): fix document.  [ruby-core:24675]
-
-Mon Aug  3 18:25:08 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/svr.rb: obsolete TCPserver renamed.  [ruby-core:24712]
-
-	* sample/tsvr.rb: ditto.
-
-	* sample/dualstack-httpd.rb: ditto.
-
-Mon Aug  3 18:12:54 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (recursive_push): untrust internal hash to prevent
-	  unexpected SecurityError.  a patch from Kazuhiro NISHIYAMA.
-	  Fix: #1864  [ruby-dev:38982]
-
-Mon Aug  3 17:06:05 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/README: updated.  a patch from Daniel Bovensiepen.
-	  [ruby-core:24693]
-
-Mon Aug  3 16:28:09 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_connect): return value was broken when some
-	  error occurred.
-	  [ruby-core:24234]
-
-Mon Aug  3 15:56:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (permute0): use chars for boolean array.
-
-	* array.c (rb_ary_{permutation,combination}): disallow reentrance
-	  with continuation since work-buffers cannot restore.
-
-	* array.c (rb_ary_{permutation,combination,product}): must not use
-	  ary_discard on strings.
-
-Mon Aug  3 06:43:25 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_hash): normalize -0.0 to 0.0.  [ruby-core:24577]
-
-Mon Aug  3 00:32:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (rb_random_int): arguments have to be converted to
-	  integer.  [ruby-core:24679]
-
-Sun Aug  2 21:04:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (literal_concat0): tail can be nil.  [ruby-dev:38980]
-
-Sun Aug  2 20:09:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_combination, rb_ary_product): prevent from GC.
-
-Sun Aug  2 16:53:19 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rand.rb: add tests for Random#float's rejection
-	  against Infinity and NaN.
-
-Sun Aug  2 14:20:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (rand_int): prevent from GC.
-
-Sat Aug  1 19:23:27 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (tr_trans): change condition of singlebyte
-	  optimization.
-
-Sat Aug  1 18:50:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (random_float): rejects Infinity and NaN.
-	  [ruby-core:24651]
-
-Sat Aug  1 18:34:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/rbinstall.rb (gem): suppressed warnings.
-	  cf: [ruby-dev:38975]
-
-Sat Aug  1 05:18:36 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (tr_trans): can't use singlebyte optimization when
-	  the replacement is multibyte. [ruby-core:24612]
-
-Fri Jul 31 18:01:34 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/securerandom.rb (SecureRandom.random_bytes): return string should
-	  be ASCII-8BIT.  [ruby-core:24640]
-
-Fri Jul 31 16:28:33 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_stdio_set_default_encoding): added.
-
-	* ruby.c (process_options): call rb_stdio_set_default_encoding
-	  after setting default internal and external.
-
-Fri Jul 31 15:06:33 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/compile_prelude.rb: too long string literal causes compile error
-	  on some platforms.
-
-Fri Jul 31 13:15:27 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* transcode.c (str_encode_bang): C99ism.
-
-Fri Jul 31 11:48:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): used more appropriate construct.
-
-Fri Jul 31 10:54:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (literal_concat_gen): reduced unnecessary node at string
-	  literal concatenation with empty head dstr.  [ruby-dev:38968]
-
-Fri Jul 31 02:57:39 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (literal_concat_gen): NODE_DSTR was incorrectly handled as
-	  NODE_STR.  [ruby-dev:38968]
-
-	* bootstraptest/test_syntax.rb: add a test for above.
-
-Fri Jul 31 00:55:48 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_module.rb (test_ancestors, test_included_modules):
-	  ignore rake mixins.
-
-Fri Jul 31 00:30:54 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_insnhelper.c (vm_call_cfunc): let set_trace_func use called_id
-	  instead of original_id.
-
-Thu Jul 30 23:04:32 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* gem_prelude.rb (Gem.path): uses Gem.default_path as a default value
-	  so that ruby finds gems in ~/.gem/.
-	  (Gem.user_home): reduced version of lib/rubygems.rb's.
-	  Gem.default_path needs it.
-
-Thu Jul 30 22:28:04 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/compile_prelude.rb: replaces "require" with in-place evaluation
-	  so that copy & paste for lib/rubygems/default.rb is not necessary.
-
-	* gem_prelude.rb: removes copied codes from lib/rubygems/defaults.rb.
-	  uses require instead.
-
-	* common.mk (prelude.c): adds dependency for lib/rubygems/defaults.rb.
-
-Thu Jul 30 21:56:18 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rand.rb: add tests for Random class.
-
-Thu Jul 30 21:48:56 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* random.c (init_genrand): ensure invariant of mt->next and mt->left.
-	  mt->next should always equal mt->state + N + 1 - mt->left.
-	  In fact, 'r = Random.new(0); r == r.dup' has returned false.
-
-Thu Jul 30 21:43:41 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* random.c (random_bytes): use NUM2LONG instead of FIX2LONG because
-	  Random#bytes may receive bignum.
-
-Thu Jul 30 21:39:42 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_compile_each): fix stack consistency error.
-	  [ruby-core:24611]
-
-	* bootstraptest/test_method.rb: add tests for above.
-
-Thu Jul 30 18:39:39 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: added check for frozen string for encode! (see Bug #1836)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-
-Thu Jul 30 16:45:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (defineclass): preserve encoding of class/module
-	  names.  [ruby-core:24600]
-
-	* variable.c (rb_set_class_path_string): set class path with a
-	  string value.
-
-Thu Jul 30 16:12:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (Init_var_tables): initializes __classid__ ID.
-
-	* variable.c: use st_data_t for st functions.
-
-Thu Jul 29 14:25:14 2009  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/util.rb (CGI::unescape): support encoding option.
-
-	* lib/cgi/cookie.rb (CGI::Cookie.parse): fix for the encoded value.
-
-Wed Jul 29 08:08:07 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (regexp): regexp literal at the top of dstr is still needed
-	  even if it is empty.
-
-Wed Jul 29 03:36:24 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/json/lib/json/common.rb (JSON#recurse_proc): remove
-	  unnecessary private specifier.  [ruby-dev:38929]
-
-Wed Jul 29 03:34:46 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h, vm_insnhelper.c (vm_call_method): revive
-	  VM_CALL_OPT_SEND_BIT and use it to recognize "send" method.
-
-Wed Jul 29 03:11:59 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (rb_method_entry_arity): support not_implemented method.
-	  (I have no idea to test it)
-
-Tue Jul 28 19:36:26 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (rb_method_entry_arity): support optimized method (send).
-
-	* test/ruby/test_method.rb: add a test for above.
-
-Tue Jul 28 04:34:05 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/extconf.rb: bug fix and ignore invalid Tcl/Tk libraries.
-
-	* ext/tk/lib/config_list.in: bug fix and add a new option.
-
-	* ext/tk/lib/README.tcltklib: update for a new option.
-
-Mon Jul 27 19:03:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_*str_new_cstr, rb_str_buf_new_cstr),
-	  (rb_str_buf_cat2, rb_str_cat2, rb_exc_new2): suppress warnings.
-
-Mon Jul 27 10:24:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parser.rb (RDoc::Parser.binary?): fix for empty files.
-	  [ruby-dev:38848]
-
-Mon Jul 27 06:51:41 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_eof): should call next_argv() before testing.
-	  [ruby-core:24561]
-
-Sun Jul 26 19:17:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_eof): go to the next file if called after ARGF.close
-	  or ARGF.skip.  a patch from Mike Kasick at [ruby-core:24561].
-
-Sun Jul 26 18:30:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): __send__ can call protected
-	  methods.  [ruby-core:24500]
-
-Sun Jul 26 01:09:14 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* ext/bigdecimal.c: moved BASE_FIG definition before it is used
-	  first time.
-
-	* include/ruby/defines.h [__SYMBIAN32__]: defined TRUE and FALSE to match
-	  changes in bignum.c and array.c.
-
-Sat Jul 25 17:49:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_eof): should not have reached EOF before trying to
-	  read.  based on a patch by Heesob Park <phasis AT gmail.com> in
-	  [ruby-core:24559].  [ruby-core:24557]
-
-Sat Jul 25 13:44:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c (nucomp_hash), rational.c (nurat_hash): not to use
-	  hash value of class so that equality against subclasses can
-	  work.  [ruby-dev:38850]
-
-Sat Jul 25 01:05:59 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/big5.c: Fix EncLen_BIG5 for Big5-HKSCS. see [ruby-core:24390]
-
-Fri Jul 24 19:19:19 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/big5.trans, big5-hkscs-tbl.rb:
-	  new Chinese BIG5-HKSCS transcoding (with Tatsuya Mizuno)
-	  see [ruby-core:24390]
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (with Tatsuya Mizuno)
-
-	* enc/big5.c: Added BIG5-HKSCS as a replicate encoding of BIG5
-	  (short term solution, needs more work; with Tatsuya Mizuno)
-
-	* tool/transcode-tblgen.rb: made 'pat' directly accessible in
-	  class StrSet
-
-Fri Jul 24 18:03:01 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (idle): leaves IDLE in a ensure clause.  a patch
-	  from Eric Hodel.
-
-	* test/net/imap/test_imap.rb (setup, teardown): turn on
-	  Socket.do_not_reverse_lookup in tests.
-
-Fri Jul 24 00:13:41 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (resp_text_code): accepts response codes without
-	  text.  [ruby-core:24194]
-
-	* lib/net/imap.rb (idle, idle_done): new methods for the IMAP4 IDLE
-	  command (RFC 2177).  Thanks, Eric Hodel.
-
-	* lib/net/imap.rb (format_date, format_datetime): new method to
-	  format IMAP-style date/datetime. Thanks, Eric Hodel.
-
-Thu Jul 23 17:31:02 2009  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb: make irb be able to parse
-	  string_dvar. [ruby-core: 24051]
-
-Thu Jul 23 17:26:51 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: should not create "config_list" in a $srcdir.
-
-Thu Jul 23 14:35:02 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_{open,wopen}): fixed typos. these conditions
-	  mean to call runtime's open() if textmode.
-
-Thu Jul 23 08:53:24 2009  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup/simple_markup/: Remove useless directory.
-	  [Bug #1343]
-
-Thu Jul 23 08:52:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (random_{state,left}): internal/debug use.
-
-Wed Jul 22 19:29:26 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_module.rb (TestModule#test_alias): warning
-	  message updated.
-
-Thu Jul 23 00:39:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (class.o): depends on vm_core.h.
-
-Thu Jul 23 00:10:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (init_leap_second_info): checks the result of gmtime to
-	  suppress warnings.
-
-Wed Jul 22 22:23:24 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_core.h (struct rb_iseq_t): add a new field line_no.  This field
-	  represents line number from which the original code of the iseq
-	  starts.  [ruby-dev:38698]
-
-	* iseq.c, compile.c: ditto.
-
-	* parse.y: line number hack (for Proc#source_location) is no longer
-	  needed.
-
-	* test/ruby/test_settracefunc.rb: line number of set_trace_func is now
-	  compatible with 1.8's.
-
-Wed Jul 22 22:16:48 2009  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* method.h: Commas at end of enum list not allowed as of C89
-
-	* vm_method.c (rb_add_method): avoid C++ comment
-
-	* vm_insnhelper.c (vm_call_cfunc): ditto.
-
-Wed Jul 22 20:42:52 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: define IPPROTO_IPV6 macro for recent Windows
-	  SDK.
-
-Wed Jul 22 19:32:10 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/mkconstants.rb: define IPV6_* constants only when INET6
-	  is defined.
-
-Wed Jul 22 19:23:04 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: ipv6 support is disabled by default on mswin.
-
-Wed Jul 22 17:41:08 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/ipsocket.c (init_inetsock_internal): drop IPv6 addresses
-	  if INET6 is not defined.
-
-Wed Jul 22 17:29:59 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: enable ipv6 support for win32.
-
-Wed Jul 22 16:38:39 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* hash.c (Hash::[]): rdoc. patch by Marc-Andre Lafortune.
-	  #1385.
-
-Wed Jul 22 10:00:53 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (WSAMSG): get rid of compile error on VC9 and mingw.
-
-Wed Jul 22 06:35:56 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_enum.rb (TestEnumerable#each): recursive join now
-	  raises ArgumentError.
-
-Wed Jul 22 02:33:57 2009  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb.rb: forget svn commit.
-
-Wed Jul 22 01:20:54 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bootstraptest/test_io.rb: block write may block for long time.
-
-Wed Jul 22 00:34:39 2009  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb.rb, lib/irb/init.rb, lib/irb/ext/save-history.rb: add
-	  IRB::irb_at_exit. no use finalizer saving history. [ruby-dev-38563]
-
-Tue Jul 21 23:47:38 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* random.c (rand_init): array length of random seed was broken, which
-	  causes memory error with srand(2**1000000-1).
-
-	* test/ruby/test_rand.c: test for above.
-
-Tue Jul 21 21:37:19 2009  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/cmd/help.rb: fixed irb's "help" command. [ruby-core:22310].
-
-	* lib/tracer.rb: no show lines unknown line number. [ruby-core:22096],
-	  no trace display  c-call and c-return as default.
-
-Tue Jul 21 16:24:41 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (vtdate2rbtime): VT_DATE variant object
-	  is converted to Time object now.
-
-	* test/win32ole/test_win32ole_variant.rb (test_s_new_with_nil,
-	  test_conversion_time2date, test_conversion_str2date,
-	  test_conversion_vt_date, test_set_value): ditto.
-
-	* ext/win32ole/win32ole.c (rbtime2vtdate): refactoring.
-
-Tue Jul 21 16:07:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tracer.rb: toplevel caller exists now.  [ruby-core:24454]
-
-Tue Jul 21 13:36:20 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.[ch] (recvmsg, sendmsg): new functions to support recvmsg/
-	  sendmsg like UNIX. these functions are experimental and not tested
-	  well. bug reports are welcome.
-
-Tue Jul 21 13:35:21 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (TEST_RUNNABLE): follow r24209.
-
-Tue Jul 21 12:45:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_gc_enable, rb_gc_disable): should return Qtrue/Qfalse.
-
-Tue Jul 21 12:38:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_generic_ivar_memsize): should not remove generic
-	  instance variable table.
-
-Mon Jul 20 20:35:55 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_f_open): add rdoc about specifying ext_enc as *-bom.
-
-Mon Jul 20 19:00:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (compile_dstr_fragments): reduced needless literal.
-
-	* parse.y (xstring, regexp, dsym, literal_concat, evstr2dstr):
-	  literal at the top of dstr is no longer needed if it is empty,
-	  since concatstrings and toregexp always create new strings.
-
-Mon Jul 20 12:51:39 2009  wanabe  <s.wanabe@gmail.com>
-
-	* lib/matrix.rb (Matrix#rank): revert a part of r20859 to avoid
-	  infinite loop.  [Bug #1020]
-
-Mon Jul 20 11:12:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, Makefile.in (TEST_RUNNABLE): tests are no
-	  runnable if cross-compiling.
-
-	* common.mk (btest*, test*): ditto.
-
-Mon Jul 20 10:55:18 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Addrinfo#family_addrinfo): fix a typo in
-	  error message.  patch by Nobuhiro IMAI.  [ruby-dev:38828]
-
-Sun Jul 19 22:22:54 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (float_to_r): an improvement.
-
-Sun Jul 19 20:41:24 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (make_patterns): do not use \d.
-
-	* rational.c (make_patterns): ditto.
-
-Sun Jul 19 17:32:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_read): should taint the result.  [ruby-dev:38826]
-
-Sun Jul 19 11:00:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (me_opts): fixed optimized method aliasing.
-	  [ruby-dev:38824]
-
-Sun Jul 19 10:54:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.accept_loop): rescue
-	  IO::WaitReadable instead of Errno::EWOULDBLOCK.
-	  (Socket.udp_server_loop_on): ditto.
-
-Sat Jul 18 23:44:59 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (reg_enc_error): use rb_enc_get to get the encoding of
-	  a Regexp object. REGEXP(re)->ptr->enc is the encoding of the
-	  regexp engine for patterns and target strings.
-	  [ruby-core:23208]
-
-Sat Jul 18 17:43:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_hash_cmp): got rid of overflow.
-
-Sat Jul 18 16:03:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/defines.h (TRUE, FALSE): for internal use.
-
-Sat Jul 18 11:39:49 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* random.c: workaround for VC++ 6.0.
-
-Sat Jul 18 09:16:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (rb_random_{int32,real,bytes,int}): added functions for
-	  extension libraries.
-
-Sat Jul 18 09:07:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (fill_random_seed): use cryptographic service on Windows.
-
-Sat Jul 18 07:56:00 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: fail to create a widget object for an unknown
-	  widget path.
-
-Sat Jul 18 07:06:31 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb,ext/tk/lib/tk/grid.rb: Bug fix on grid_slaves().
-	  Extend usage pattern of grid_column()/grid_row().
-
-Sat Jul 18 06:30:35 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h: include winsock headers in extern "C++" for
-	  C++ extension libraries.
-
-	* include/ruby/missing.h (vsnprintf): workaround for VC++.
-	  [ruby-core:23096]
-
-Sat Jul 18 00:23:47 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/readline/readline.c (Init_readline): rl_catch_signals does
-	  not exist on some platform like Mac OS X 10.5.
-
-	* ext/readline/extconf.rb: checks existence of rl_catch_signals.
-
-Fri Jul 17 22:37:22 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (socket_s_ip_address_list): drop inactive
-	  adapters.
-
-	* test/socket/test_{nonblock,addrinfo,socket}.rb: skip some tests on
-	  Windows.
-	  [ruby-core:23051]
-
-Fri Jul 17 22:29:21 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/readline/readline.c (Init_readline): use rl_catch_sigwinch only
-	  when existing.
-
-	* ext/readline/extconf.rb: check existence of rl_catch_sigwinch, and
-	  workaround for native Win32 readline port.
-
-Fri Jul 17 18:18:23 2009  Tanaka Akira  <akr@fsij.org>
-
-	* range.c (recursive_hash): extracted from range_hash.  reject
-	  recursive key.
-	  (range_hash): use recursive_hash.
-
-Fri Jul 17 18:11:32 2009  Tanaka Akira  <akr@fsij.org>
-
-	* struct.c (recursive_hash): extracted from rb_struct_hash.  reject
-	  recursive key.
-	  (rb_struct_hash): use recursive_hash.
-
-Fri Jul 17 16:45:22 2009  Tanaka Akira  <akr@fsij.org>
-
-	* array.c (recursive_hash): reject recursive key.
-
-Fri Jul 17 15:20:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (DIGSPERINT): fix for LP64.
-
-	* random.c (fill_random_seed): /dev/urandom is not available on
-	  DOSISH systems.
-
-	* random.c (random_equal): new method Random#==.
-
-Fri Jul 17 13:35:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/init.c (rsock_getfamily): return AF_UNSPEC if getsockname
-	  is failed.  [ruby-core:24383]
-
-Fri Jul 17 01:22:57 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (recursive_join): raise ArgumentError for joining
-	  recursive array.
-
-	* array.c (ary_join_1): ditto.
-
-	* test/ruby/test_array.rb (TestArray#test_join2): test updated for
-	  recursive join.
-
-Thu Jul 16 23:32:16 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb,ext/tk/config_list.in: ignore paths which includes
-	  white space characters on Windows.[ruby-dev:38794]
-
-	* ext/tk/lib/tk.rb: works on Cygwin (limitation:: Tk.mainloop works on
-	  the main thread only).
-
-Thu Jul 16 20:58:18 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole.rb (test_s_codepage_changed,
-	  test_s_locale_set, test_s_locale_change): skip test if Japanese
-	  locale is not installed. [ruby-core:23806]
-
-	* test/win32ole/test_win32ole_variant.rb (test_conversion_str2cy):
-	  ditto.
-
-Thu Jul 16 19:02:28 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/lib/socket.rb (Socket.tcp_server_sockets_port0): servers
-	  is nil if an error occurs before setting it.
-
-Thu Jul 16 18:42:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (fill_random_seed): suppress a warning.
-
-Thu Jul 16 18:30:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_aset, recursive_hash): rejects recursive hash.
-	  [ruby-core:22921]
-
-Thu Jul 16 18:28:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* id.c (Init_id), vm.c (vm_exec): @#__ThrowState__ is no longer
-	  used.  [ruby-dev:38760]
-
-Thu Jul 16 17:41:28 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_method.c (rb_alias): fix a case which try non-existing method alias.
-
-	* test/ruby/test_alias.rb: add a test.
-
-Thu Jul 16 16:00:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_reopen): discards read buffer.  [ruby-core:24240]
-
-Thu Jul 16 15:52:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_new, rb_bigzero_p), range.c (rb_range_values):
-	  added for random.c.
-
-	* random.c (rb_random_t): objectified.  [EXPERIMENTAL]
-	  [ruby-dev:30954]
-
-Thu Jul 16 14:08:44 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_sample): RDoc update.  a patch from Florian
-	  Frank.   [ruby-core:24347]
-
-Thu Jul 16 12:42:10 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_readline): rl_free_line_state
-	  before rl_cleanup_after_signal.
-
-	* ext/readline/readline.c (Init_readline): set rl_catch_signals and
-	  rl_catch_sigwinch as 0. [ruby-core:21884]
-
-Thu Jul 16 08:59:22 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* node.h, vm_core.h, variable.c: rename global_entry to rb_global_entry.
-
-	* compile.c, insns.def, iseq.c, vm_insnhelper.h: ditto.
-
-Thu Jul 16 08:57:44 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_method.c: separate clearing cache entry code.
-
-Thu Jul 16 08:56:32 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* dir.c (push_glob): re-fix GC problem.
-
-Thu Jul 16 08:55:27 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: add method.h.
-
-Thu Jul 16 08:53:26 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* io.c (argf_free): free data body.
-
-Wed Jul 15 23:46:55 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* method.h, vm_core.h: add rb_method_entry_t.  Remove nodes around
-	  method management.  This change affect some VM control stack structure.
-
-	* vm.c, vm_insnhelper.c, vm_method.c, vm_eval.c: ditto.  and make some
-	  refactoring.
-
-	* insns.def, class.c, eval.c, proc.c, vm_dump.c : ditto.
-
-	* vm_core.h, compile.c (iseq_specialized_instruction): remove
-	  VM_CALL_SEND_BIT.  use another optimization tech for Kernel#send.
-
-	* node.h: remove unused node types.
-
-	* ext/objspace/objspace.c (count_nodes): ditto.
-
-	* gc.c: add mark/free functions for method entry.
-
-	* include/ruby/intern.h: remove decl of
-	  rb_define_notimplement_method_id().  nobody can use it
-	  because noex is not opened.
-
-	* iseq.c (iseq_mark): fix to check ic_method is available.
-
-	* iseq.c (rb_iseq_disasm): fix to use rb_method_get_iseq().
-
-Wed Jul 15 23:45:11 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* dir.c (push_glob): fix GC problem.
-
-Wed Jul 15 17:33:52 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/purelib.rb: translates a fake path to rubygems in $" into
-	  an alternative in $: so that Kernel.#require does not load
-	  more rubygems.rb.
-	  Resolves many failures in test/rubygems/*.
-
-	* gem_prelude.rb (Gem.load_full_rubygems_library): supports case
-	  the rubygems to load is not in $(rubylibprefix).
-	  (Gem.path_to_full_rubygems_library): new method for the changes in
-	  purelib.rb and Gem.load_full_rubygems_library.
-	  (Gem.fake_rubygems_as_loaded): new method.
-
-Wed Jul 15 16:29:35 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (LIBPATHFLAG): path is already quoted in mkmf.rb.
-
-Wed Jul 15 06:21:50 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: --with-{tcl,tk}-dir doesn't work.[ruby-dev:38782]
-
-Wed Jul 15 04:22:54 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_multipart.rb (CGIMultipartTest#_prepare):
-	  set tempfile name with literal.
-
-Tue Jul 14 21:53:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/nonblock: moved from ext/io/wait/lib.
-
-Tue Jul 14 17:29:20 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_index_m): return nil if pos is out of string.
-	  [ruby-core:23660]
-
-Tue Jul 14 16:13:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_initialize): check if the descriptor can be accessed
-	  in the specified open mode.  [ruby-dev:38571]
-
-Tue Jul 14 09:26:14 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: Long-term-callback support isn't stable yet.
-	  So, disable the feature and waiting for improvement in the future.
-
-Tue Jul 14 01:28:17 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_m17n.rb (TestM17N#test_env): the encoding of
-	  ENV is now locale encoding.
-
-Tue Jul 14 01:24:56 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* marshal.c (r_object0): should return real object.
-
-Tue Jul 14 01:06:31 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enumerator.c (yielder_yield_i): use rb_proc_new instead of
-	  rb_iterate.  [ruby-dev:38518]
-
-	* README.EXT: rb_iterate is obsolete since 1.9; use rb_block_call
-	  instead.
-
-	* README.EXT.ja: ditto.
-
-Tue Jul 14 00:45:41 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_case.rb (TestCase#test_deoptimization):
-	  test for [ruby-core:23190].
-
-Mon Jul 13 22:49:50 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/prime.rb (Prime#prime_division): now decomposes
-	  negative integer into a decomposition with element [-1, 1].
-
-	* test/test_prime.rb: test for it.
-
-Mon Jul 13 22:28:03 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (pipe_open): handles leaked on win32 when an error occurs.
-
-Mon Jul 13 20:21:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_object0): should not shadow outer variable not to
-	  return Qnil always.
-
-Mon Jul 13 19:41:05 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* marshal.c (r_object0): copy instance variables to new regexp.
-
-Mon Jul 13 17:49:11 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h, compile.c: declare struct iseq_inline_cache_entry.
-	  Inline cache (IC) entries are no longer GC managed object.
-	  IC entries are freed when ISeq is freed.
-
-	* iseq.c: fix mark, free, memsize functions for above change.
-
-	* insns.def: remove rb_gc_write_barrier().
-
-	* vm_insnhelper.c (vm_method_search): ditto.
-
-	* tool/instruction.rb, template/insns_info.inc.tmpl (insn_iclen):
-	  added.
-
-Mon Jul 13 13:35:08 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def, vm_insnhelper.c (getinstancevariable):
-	  fix to use inline cache.
-
-	* compile.c: fix to skip inline cache entry (IC).  IC is added
-	  automatically by compiler.
-
-	* insns.def, vm_insnhelper.h: fix IC positions.
-
-	* iseq.c: increment minor_version of ISeq because of above change.
-
-Mon Jul 13 08:01:00 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/extconf.rb: New strategy for searching Tcl/Tk libraries.
-
-	* ext/tk/*: Support new features of Tcl/Tk8.6b1 and minor bug fixes.
-	     ( [KNOWN BUG] Ruby/Tk on Ruby 1.9 will not work on Cygwin. )
-
-	* ext/tk/*: Unify sources between Ruby 1.8 & 1.9.
-	            Improve default_widget_set handling.
-
-	* ext/tk/*: Multi-TkInterpreter (multi-tk.rb) works on Ruby 1.8 & 1.9.
-	     ( [KNOWN BUG] On Ruby 1.8, join to a long term Thread on Tk
-	        callbacks may freeze. On Ruby 1.9, cannot create a second
-	        master interpreter (creating slaves are OK); supported master
-	        interpreter is the default master interpreter only. )
-
-	* ext/tk/lib/tkextlib/*: Update supported versions of Tk extensions.
-	         Tcllib 1.8/Tklib 0.4.1  ==>  Tcllib 1.11.1/Tklib 0.5
-	         BWidgets 1.7            ==>  BWidgets 1.8
-	         TkTable 2.9             ==>  TkTable 2.10
-	         TkTreeCtrl 2005-12-02   ==>  TkTreeCtrl 2.2.9
-	         Tile 0.8.0/8.5.1        ==>  Tile 0.8.3/8.6b1
-	         IncrTcl 2005-02-14      ==>  IncrTcl 2008-12-15
-	         TclX 2005-02-07         ==>  TclX 2008-12-15
-	         Trofs 0.4.3             ==>  Trofs 0.4.4
-
-Mon Jul 13 01:18:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_timespec): rounds subsecond toward zero.
-
-Sun Jul 12 23:51:39 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* hash.c (env_str_new): use rb_locale_str_new instead of
-	  rb_tainted_str_new. rb_locale_str_new set string locale
-	  encoding and tainted.
-
-Sun Jul 12 23:56:40 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: added some shortcuts.
-
-	* rational.c: ditto.
-
-Sun Jul 12 23:30:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_to_integer, rb_check_to_integer): return Bignum
-	  as-is.
-
-Sun Jul 12 21:07:46 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: use k_exact_{zero,one}_p macro.
-
-	* rational.c: ditto.
-
-Sun Jul 12 20:42:58 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c (fix_divide): added an entry to rational.
-
-	* rational.c (rb_rational_reciprocal): added.
-
-	* complex.c (f_reciprocal): added.
-
-Sun Jul 12 02:24:42 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (rand_init): use fixed buffer for small numbers.
-
-Sat Jul 11 14:43:34 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_io_m17n.rb (test_strip_bom): added.
-
-Sat Jul 11 07:11:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_attempted_completion_function):
-	  array length is long.
-
-	* ext/readline/readline.c (readline_s_get_filename_quote_characters):
-	  missing type of self.
-
-Sat Jul 11 02:37:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (limited_rand): expands to long before shift so that
-	  the result does not overflow.
-
-Sat Jul 11 00:16:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (rand_init): got rid of buffer overflow.
-
-Sat Jul 11 00:11:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (ary_join_1): should recurse for element array.
-
-Fri Jul 10 23:10:11 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_strip_bom): ungetbyte third byte when UTF-16LE.
-
-Fri Jul 10 23:04:16 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_strip_bom): Fix condition of second byte of
-	  UTF-16LE/UTF-32LE.
-
-Fri Jul 10 21:45:30 2009  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/extconf.rb: checked rl_refresh_line in readline.
-
-	* ext/readline/readline.c (readline_s_refresh_line): add new
-	  method, a patch from Koichiro Ohba. see [ruby-list:45922].
-
-Fri Jul 10 21:00:05 2009  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/extconf.rb: checked rl_line_buffer and rl_point in
-	  readline.
-
-	* ext/readline/readline.c (readline_s_get_line_buffer): new method.
-	  (readline_s_get_point): new method.
-
-Fri Jul 10 16:30:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (recursive_join): use obj to tell if recursion occurs.
-	  [ruby-core:24150]
-
-	* enum.c (enum_join): reverted r23966.  [ruby-core:24196]
-
-Fri Jul 10 14:41:34 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* marshal.c (r_object0): set encoding only if the encoding
-	  is not US-ASCII.
-
-Fri Jul 10 14:44:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (struct MT): ruby already assumes int has 32bit a
-	  least, so no needs to use long.
-
-	* random.c (rand_init): copies data to be used really only.
-
-Fri Jul 10 11:41:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_obj_{untrust,untrusted,trust}): added
-	  prototypes.  [ruby-dev:38756]
-
-Fri Jul 10 10:25:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_search_superclass): checks for implicit
-	  argument passing before method search.  [ruby-core:24244]
-
-Fri Jul 10 07:22:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_data_type): typed.
-
-Thu Jul  9 23:28:48 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/io.h (FMODE_STRIP_BOM): new constant.
-
-	* io.c (io_encname_bom_p): judge whether the encoding name
-	  is *-bom or not.
-	  (parse_mode_enc): drop "-bom".
-	  (rb_io_modestr_fmode): set FMODE_STRIP_BOM if needed.
-	  (rb_io_extract_modeenc): ditto.
-	  (io_strip_bom): strip bom if exists.
-	  (io_set_encoding_by_bom): set encoding if there is bom.
-	  Set encoding and strip bom when modeenc string is "r:foo-bom"
-	  [ruby-dev:37236]
-
-Thu Jul  9 21:56:59 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* marshal.c (r_object0): replace \u by u when the regexp is
-	  made by Ruby 1.8. [ruby-dev:36750]
-
-Wed Jul  8 23:13:54 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_div): omitted zero division check.
-
-Wed Jul  8 21:00:37 2009  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/inspector.rb: forget svn add.
-
-Wed Jul  8 19:10:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_check_type): rejects typed data.
-
-Wed Jul  8 18:28:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c ({proc,binding,method}_data_type): typed.
-
-Wed Jul  8 16:47:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_basename): returns new string instead of
-	  shared string from FilePathStringValue().  [ruby-core:24199]
-
-Wed Jul  8 04:28:16 2009  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/.document:  Update with extensions that appear to have
-	  documentation.  [ruby-core:24181]
-
-Wed Jul  8 04:28:16 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h:
-	  rename
-	    "...TypeStruct" and "typed_struct" to
-	    "TypedData..." and "typeddata", respectively.
-	  rename
-	    rb_data_type_t#name to
-	    rb_data_type_t#wrap_struct_name.
-
-	* error.c, gc.c, iseq.c, vm.c: ditto.
-
-Tue Jul  7 20:23:27 2009  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* bin/irb, lib/irb.rb lib/irb/*: irb-0.9.6, extend inspect-mode
-
-Tue Jul  7 17:00:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): deal with typed struct like
-	  as obj_free().
-
-	* error.c (rb_typed_struct_is_kind_of): new function to see if the
-	  given typed struct.
-
-	* error.c (rb_check_typed_struct): new function to check typed
-	  struct.
-
-	* include/ruby/ruby.h (Check_TypedStruct, Data_Get_TypedStruct):
-	  new macro to check typed struct.
-
-Tue Jul  7 13:36:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (DEFINE_ENUMFUNCS): included function signature.
-
-	* enum.c (rb_enum_join): non-nil separator must be convertible to
-	  String.  [ruby-core:24172]
-
-Tue Jul  7 12:47:28 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (rb_enum_join): should propagate taint to the return
-	  value.  the change was overridden by r23967.  [ruby-core:24176]
-
-Tue Jul  7 11:56:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (GC_PROF_SET_MALLOC_INFO, GC_PROF_SET_HEAP_INFO): simplified.
-
-Tue Jul  7 10:12:37 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_io_ext_int_to_encs): Set external encoding if
-	  ext==intern. [ruby-dev:38278]
-
-Mon Jul  6 09:31:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (make_curry_proc): should propagate lambda-ness.
-	  [ruby-core:24127]
-
-	* proc.c (proc_hash): use long.
-
-Mon Jul  6 09:06:49 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_module.rb (TestModule#test_undef): adjust to
-	  message change.
-
-	* test/ruby/test_object.rb (TestObject#test_redefine_method_which_may_case_serious_problem): ditto.
-
-	* test/ruby/test_object.rb (TestObject#test_remove_method): ditto.
-
-Mon Jul  6 09:04:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_join): deals with self recursive objects to get rid
-	  of infinite recursion.  [ruby-core:24150]
-
-Mon Jul  6 08:00:10 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_to_a): should propagate taint to the return value.
-	  [ruby-core:24152]
-
-	* enum.c (enum_sort_by): ditto.
-
-Mon Jul  6 00:41:41 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: edited rdoc.
-
-Sun Jul  5 23:55:57 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (find_time_t): fix Time.local(2009,2,31) failure on 64bit
-	  time_t environment.
-
-Sun Jul  5 22:43:13 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_polar): now arg is optional.
-
-Sun Jul  5 20:40:35 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (float_arg): returns PI for -0.0.
-
-Sun Jul  5 14:04:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_threadptr_exec_event_hooks): new function to
-	  execute event hooks, with preserving errinfo.  [ruby-core:24118]
-
-Sun Jul  5 08:14:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_add_method, remove_method, rb_undef): fixed
-	  minor grammatical errors in warnings.  a patch from Run Pain
-	  Run Run at [ruby-core:24141].
-
-	* vm_method.c (Init_eval_method): registers notimplement_body as a
-	  mark-object.
-
-	* vm_insnhelper.c (vm_yield_setup_block_args): restores the firs
-	  arg where is overwritten at funcall.  [ruby-core:24139]
-
-Sat Jul  4 08:20:03 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (dbl2ival): should raise FloatDomainError on Infinity
-	  and NaN as 1.8 does.  [ruby-dev:38726]
-
-Fri Jul  3 22:48:45 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (find_time_t): less number of guesses for hh:mm:60.
-
-Fri Jul  3 21:30:14 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_equal_p): removed.
-
-Fri Jul  3 21:07:29 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: renamed equal_p to eqeq_p.
-
-	* complex.c: ditto.
-
-	* complex.c (nucomp_equal_p): added.
-	  Complex(NaN).equal?(Complex(NaN)) should return true.
-
-Fri Jul  3 19:48:40 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: undef-ed some methods.  [ruby-core:24110]
-
-	* complex.c (Numeric#arg): NaN for NaN.  [ruby-core:24116]
-
-Fri Jul  3 18:35:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct rb_iseq_struct): fixed types.
-
-	* vm_core.h (ic_vmstat): VM state version is VALUE.
-
-Fri Jul  3 02:52:20 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (find_time_t): time guess strategy refined again.
-
-Fri Jul  3 00:36:16 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (find_time_t): time guess strategy refined.
-
-Thu Jul  2 11:16:25 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: added response to Net::IMAP::ResponseError.
-	  a patch from Eric Hodel in [ruby-core:24111].
-
-Thu Jul  2 08:04:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (num_exact): rb_check_to_integer() can deal with both of
-	  Fixnum and Bignum together.
-
-Thu Jul  2 07:53:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): fixed wrong variable.
-
-Thu Jul  2 05:37:38 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (num_exact): use to_r for T_FLOAT.
-
-Thu Jul  2 05:15:54 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (quo): return an integer if possible.
-
-Wed Jul  1 21:09:25 2009  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_time_num_new): declared.
-
-	* time.c (nsec2timev): extracted from time_new_internal.
-	  (time_new_internal): change argument to VALUE.
-	  (rb_time_new): follow the argument change.
-	  (rb_time_nano_new): ditto.
-	  (rb_time_num_new): new function.
-
-	* ext/socket/ancdata.c (ancillary_timestamp): use rb_time_num_new to
-	  represent struct bintime preciously.
-
-Wed Jul  1 08:46:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_encoding): encodings need extra depth.
-	  [ruby-core:24100]
-
-Wed Jul  1 06:47:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_grep): gets rid of type-punning calls.
-
-Wed Jul  1 06:36:28 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_join): add Enumerable#join.
-
-	* array.c (ary_join_1): recursive join for Enumerators (and
-	  objects with #to_a).
-
-	* array.c (rb_ary_join): performance tune.
-
-Tue Jun 30 18:19:07 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_hash): documentation fix.  a patch from
-	  Marc-Andre Lafortune.  [ruby-core:23943]
-
-	* object.c (rb_mod_cmp): ditto.
-
-	* range.c (range_eq): ditto.
-
-	* string.c (rb_str_partition, rb_str_rpartition): ditto.
-
-	* struct.c (rb_struct_s_def): ditto.
-
-Tue Jun 30 17:44:24 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (reg_match_pos): adjust offset based on characters, not
-	  bytes.  [ruby-dev:38722]
-
-	* string.c (rb_str_offset): new function.
-
-	* string.c (rb_str_index_m): no call to rb_reg_adjust_startpos().
-
-Tue Jun 30 16:57:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/rbinstall.rb: renamed to get rid of collision against
-	  instruction.rb on command line completion of shell.
-
-	* tool/mkconfig.rb (RbConfig.expand): get rid of exceptions on
-	  frozen strings unless really changed.
-
-	* tool/file2lastrev.rb: get rid of global variables.
-
-	* tool/compile_prelude.rb: use US-ASCII name.
-
-Tue Jun 30 16:46:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def, tool/instruction.rb: fixed types.
-
-Tue Jun 30 11:08:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/oniguruma.h, include/ruby/re.h, re.c, regcomp.c,
-	  regenc.c, regerror.c, regexec.c, regint.h, regparse.c: use long.
-
-Tue Jun 30 11:05:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_find_1): fixed index overrun.
-
-Tue Jun 30 08:42:34 2009  Eric Hodel  <drbrain@segment7.net>
-
-	* tool/instruby.rb: summary is required in a .gemspec.
-
-Tue Jun 30 01:35:12 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/strip-rdocs.rb: supports QT style doxy-comments.
-
-Tue Jun 30 01:24:10 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb (log2, cbrt): added.  [experimental]
-
-Tue Jun 30 01:19:53 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_expt): do not use rb_fexpt.
-
-Mon Jun 29 22:50:10 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Doxyfile.in: removed. merged into template/Doxyfile.template
-
-	* configure.in: new checking for dot and doxygen.
-
-	* template/Doxyfile.template: merged with Doxyfile.in.
-	  configured some options.
-
-	* common.mk (capi): use $(DOXYGEN) instead of "doxygen".
-	  (Doxyfile): removed a duplicate entry in the dependency.
-
-Mon Jun 29 21:01:31 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_expt): checks exactness.
-
-Mon Jun 29 20:29:11 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (float_to_r): always returns rational.
-
-Mon Jun 29 18:55:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_find_1): fix for files with dots.  [ruby-dev:38588]
-
-Mon Jun 29 17:14:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): should copy original encoding.
-	  [ruby-dev:38612]
-
-Sun Jun 28 23:10:55 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* gem_prelude.c (Gem.default_dir): follows the change on
-	  lib/rubygems/default.rb in r23879
-
-Sun Jun 28 23:32:11 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_div): raises ZeroDivisionError immediately
-	  when the given second argument is zero.
-
-	* rational.c (nurat_fdiv): never raise even if the given second
-	  argument is zero.
-
-	* rational.c (rb_raise_zerodiv): changed the message (zero to 0).
-
-Sun Jun 28 22:25:07 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_expt): convert to a float when the given power
-	  is a bignum.
-
-	* rational.c (nurat_expt): ditto.
-
-Sun Jun 28 21:16:48 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb (sqrt): fixed an issue [ruby-list:45852].
-
-Sun Jun 28 19:48:29 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_expt): some improvements.
-
-	* rational.c (nurat_expt): ditto.
-
-Sun Jun 28 19:03:46 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/instruby.rb (:gem): registers the bundled version
-	  of minitest as a gem as rdoc or rake.
-	  c.f. [ruby-dev:38692].
-
-Sun Jun 28 19:02:07 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/rubygems.rb (ConfigMap[:rubylibprefix]): new entry.
-
-	* lib/rubygems/defaults.rb (Gem.default_dir): considers
-	  "--with-rubylibprefix" configure option.
-
-Sun Jun 28 09:21:00 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: renamed some static functions.
-
-	* rational.c: ditto.
-
-Sat Jun 27 19:06:22 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_addsub): new
-
-	* complex.c (nucomp_{add,sub}): use nucomp_addsub.
-
-	* complex.c (nucomp_divide): changed the algorithm.
-
-	* complex.c (nucomp_abs): added shortcuts.
-
-Sat Jun 27 16:56:33 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_cmp): use rb_num_coerce_cmp.
-
-Sat Jun 27 16:45:10 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: revised rdoc.
-
-	* rational.c: ditto.
-
-	* numeric.c: ditto.
-
-Sat Jun 27 13:44:48 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* NEWS, lib/rss/maker/base.rb, test/rss/test_maker_2.0.rb: add
-	  item.guid.permanent_link? and item.guid.permanent_link=.
-
-Sat Jun 27 13:41:00 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* NEWS: rss: 0.2.5 -> 0.2.7.
-
-	* lib/rss/rss.rb, test/rss/test_version.rb: 0.2.6 -> 0.2.7.
-
-Sat Jun 27 03:16:56 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (int_chr): use default_internal encoding as default
-	  destination encoding if set.  [ruby-core:23997]
-
-Sat Jun 27 03:09:04 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_rewind): need to rewind $. and ARGF.lineno.
-	  [ruby-core:24046]
-
-	* io.c (struct argf): refactoring on $. and ARGF.lineno behavior.
-
-Fri Jun 26 21:48:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (pty_getpty): check dup failure.
-
-Fri Jun 26 17:33:46 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_rubyopt):
-	  test suite add '.' to RUBYLIB.  remove checks.
-
-	* test/ruby/test_require.rb (TestRequire#test_tainted_loadpath):
-	  the default tempdir directory /tmp is world writable, so
-	  SecurityError would be raised.  check removed.
-
-Fri Jun 26 16:32:59 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (COMPILE_PRELUDE): need -I. before -rrbconfig.
-	  [ruby-dev:38714]
-
-Thu Jun 25 18:41:51 2009  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.4.2 r5269.
-	* test/minitest/*.rb: ditto.
-
-Thu Jun 25 17:58:39 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_binmode_m): should call rb_io_ascii8bit_binmode() to
-	  set its encoding to ASCII-8BIT.  [ruby-core:24029]
-
-Thu Jun 25 13:04:58 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* instruby.rb: '&' in sed s command's replacement is '\&' in ruby.
-	  [ruby-dev:38713]
-
-Thu Jun 25 06:50:23 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_each_codepoint): uninitialized local variable enc.
-
-Thu Jun 25 06:25:49 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (first_i): wrong condition for no argument #first.
-	  [ruby-core:24017]
-
-Wed Jun 24 20:19:11 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_s_now): new function.  Time.now don't take arguments.
-
-Wed Jun 24 16:08:03 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/resource.rb: CONFIG["TEENY"] is not ruby's version but API's
-	  one.  So need to use RUBY_VERSION instead.
-
-Wed Jun 24 16:07:04 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/mkexports.rb: rbconfig.rb exists at ".".
-
-Wed Jun 24 15:02:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_set_encode): show the erred file name instead of
-	  the file that requires it.  [ruby-core:24006]
-
-Wed Jun 24 11:41:20 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* misc/ruby-style.el: It is too late to set c-file-style in
-	  c-mode-hook (at least on Emacs 23).  Call c-set-style instead.
-
-Tue Jun 23 21:28:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_get_path_check): check with given safe level.
-
-	* file.c (rb_find_file_ext_safe, rb_find_file_safe): ditto.
-
-	* safe.c (rb_insecure_operation): function to raise security
-	  error.
-
-Tue Jun 23 20:32:43 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gc.c: remove the definition of GC_DEBUG (debugging macro).
-
-Tue Jun 23 16:16:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ruby_version): defaults revision to 0 when no
-	  revision.h exists.
-
-Tue Jun 23 16:04:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext, rb_find_file): no needs to expand
-	  paths with tilde twice.
-
-	* load.c (rb_f_load): load the given path directly if not found in
-	  load_path.
-
-	* load.c (search_required): search file in specified safe level.
-
-	* load.c (rb_require_safe): path to load is already searched in
-	  search_required().
-
-Tue Jun 23 12:43:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: remove PACKAGE_* macros generated by autotools.
-	  [ruby-core:20938]
-
-Tue Jun 23 01:17:38 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c (process_options): don't specify .so for encdb here.
-	  "." is replaced by "_" in load_encoding.
-
-	* encoding.c (load_encoding): add .so here.
-
-Mon Jun 22 23:24:22 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_generic_ivar_memsize): typo fixed.  a patch from
-	  Kazuhiro NISHIYAMA.  [ruby-dev:38700]
-
-	* ext/objspace/objspace.c (memsize_of): ditto.
-
-Mon Jun 22 21:21:59 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: remove __CHECKER__ test.
-
-	* dir.c: ditto.
-
-	* dln.c: ditto.
-
-	* file.c: ditto.
-
-	* process.c: ditto.
-
-Mon Jun 22 17:15:38 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_each_codepoint): new method.
-	  [ruby-core:23949]
-
-	* ext/stringio/stringio.c (strio_each_codepoint): ditto.
-
-Mon Jun 22 16:26:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): removed "." from load_path.
-
-Mon Jun 22 16:14:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_set_arguments, iseq_compile_each): internal
-	  arrays must be hidden.  [ruby-dev:38613]
-
-	* vm.c (Init_top_self): ditto.
-
-Mon Jun 22 14:41:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options), enc/prelude.rb: encdb and transdb are
-	  extension libraries.
-
-	* ruby.c (process_options): set progname earlier.
-
-Mon Jun 22 13:50:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_fdatasync): new method IO#fdatasync.
-
-Sun Jun 21 22:33:05 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* load.c (Init_load): $: must be readonly.  [ruby-dev:38690]
-
-	* ruby.c (ruby_prog_init): $-W must be readonly.  [ruby-dev:38691]
-
-Sun Jun 21 10:47:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::Entry_#copy_file): open with
-	  default umask.  [ruby-core:23952]
-
-Sun Jun 21 10:46:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (enc_arg): default internal encoding may not be set.
-	  [ruby-core:23932]
-
-Sat Jun 20 21:11:43 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c (num_div): don't use num_floor which is actually
-	  flo_floor.
-
-	* numeric.c (num_modulo): don't call '%'.
-
-	* numeric.c (num_divmod): use num_modulo.
-
-	* numeric.c: defined '%'.
-
-	* rational.c (nurat_idiv,nurat_mod,nurat_divmod,nurat_rem): removed.
-
-Sat Jun 20 20:28:44 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: edited rdoc.
-
-	* numeric.c: ditto.
-
-Sat Jun 20 08:56:47 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: edited rdoc.
-
-	* rational.c: ditto.
-
-	* numeric.c: ditto.
-
-Sat Jun 20 07:17:52 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/monitor.rb (MonitorMixin::extend_object): should use
-	  #__send__ instead of #send to avoid possible name conflict.
-	  [ruby-core:23907]
-
-Sat Jun 20 06:56:31 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: edited rdoc.
-
-	* rational.c: ditto.
-
-Sat Jun 20 05:08:59 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: edited rdoc.
-
-	* rational.c: ditto.
-
-Sat Jun 20 04:30:35 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_abs): removed.
-
-Sat Jun 20 03:34:16 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: added rdoc.
-
-Fri Jun 19 23:43:38 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c: edited rdoc.
-
-Fri Jun 19 22:58:16 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: edited rdoc.
-
-Fri Jun 19 22:21:17 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c: edited rdoc.
-
-Fri Jun 19 21:56:01 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_expt): delegates to complex when self is
-	  negative.  because Float#** does not produce complex.
-
-Fri Jun 19 21:40:58 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c: edited rdoc.
-
-	* rational.c: ditto.
-
-Fri Jun 19 20:53:54 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_name_list): update RDoc.  [ruby-core:23926]
-
-Fri Jun 19 20:44:45 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: constant COMPLEX_NAME has been removed.
-
-	* rational.c: constant RATIONAL_NAME has been removed.
-
-Fri Jun 19 20:39:46 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: added rdoc.  a patch from Run Paint Run Run.
-
-Fri Jun 19 17:04:59 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_cmp): should always return nil for NaN.
-
-	* numeric.c (flo_cmp): handle infinite value specially using
-	  infinite? method internally.  [ruby-dev:38681]
-
-Fri Jun 19 09:28:45 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c (*_numerator,*_denominator): moved to rational.c.
-
-	* rational.c (*_numerator,*_denominator): moved from numeric.c.
-
-Fri Jun 19 08:14:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (big_lshift, big_rshift): return Bignum always without
-	  normalization.  [ruby-dev:38679]
-
-Thu Jun 18 22:31:38 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_s_convert): calls to_r when the given argument
-	  is non-integer.
-
-	* rational.c (nurat_s_convert): raises TypeError when the given
-	  argument is nil.
-
-	* complex.c (nucomp_s_convert): ditto.
-
-Thu Jun 18 20:32:11 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c (num_numerator, num_denominator): use
-	  to_r [ruby-core:23910].
-
-Thu Jun 18 16:21:05 2009  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.4.0 r5083.
-	* test/minitest/*.rb: ditto.
-
-Thu Jun 18 10:12:49 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_f): went infinity too
-	  early.  add BASE_FIG margin.  [ruby-dev:38673]
-
-Thu Jun 18 01:35:51 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_cmp): Infinity is greater than any bignum
-	  number.  [ruby-dev:38672]
-
-	* bignum.c (rb_big_cmp): ditto.
-
-Thu Jun 18 01:29:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): drive letter is ascii only.
-	  [ruby-dev:38612]
-
-Thu Jun 18 01:09:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ridir, RI_BASE_NAME): fixed for path expansion.
-	  [ruby-core:23876]
-
-Wed Jun 17 23:46:08 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_coerce): accepts Complex when the imag is
-	  exact zero.
-
-Wed Jun 17 21:25:54 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* bignum.c (rb_big_fdiv): checks whether the given second argument
-	  can be converted to float properly.
-
-	* numeric.c (fix_fdiv): calls rb_big_fdiv when the given second
-	  argument is a bignum.
-
-	* rational.c (nurat_fdiv): should calculate Float(x/y), not
-	  Float(x)/Float(y).
-
-Wed Jun 17 16:57:40 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* load.c (rb_f_require): RDoc updated.  a patch from Run Paint Run
-	  Run in [ruby-core:23833].
-
-	* load.c (rb_mod_autoload): ditto.  [ruby-core:23835]
-
-Wed Jun 17 14:37:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sample/test.rb (valid_syntax?): skips BOM.  [ruby-dev:38666]
-
-	* test/ruby/test_system.rb (TestSystem#valid_syntax?): ditto.
-
-Wed Jun 17 13:54:18 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/strscan/strscan.c (Init_strscan): remove obsolete
-	  matchedsize method, use matched_size instead.  [ruby-dev:38591]
-
-Wed Jun 17 12:37:37 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (ruby_thread_stack_overflow): call rb_exc_raise() on
-	  stack overflows in the signal handler, if sigaltstack is
-	  available.  On stack overflow (and with sigaltstack), the signal
-	  handler is more likely to have room to create an exception
-	  object.  [ruby-core:23813]
-
-Wed Jun 17 08:10:38 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/objspace: added.  objspace library extends some methods to
-	  ObjectSpace module.
-
-Wed Jun 17 08:14:01 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_coerce): accepts Complex instances.
-
-	* rational.c (nurat_coerce): accepts Rational
-	  instances. [ruby-core:23859]
-
-Wed Jun 17 07:36:22 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/webrick/httputils.rb (parse_form_data): escape boundary of
-	  multipart/form-data when embed in regexp.
-
-Wed Jun 17 07:24:26 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* array.c (rb_ary_memsize): added.
-
-	* io.c (rb_io_memsize): added.
-
-	* regcomp.c (onig_memsize): added.
-
-	* string.c (rb_str_memsize): added.
-
-	* transcode.c (rb_transcoding_memsize, rb_econv_memsize): added.
-
-	* variable.c (rb_geneic_ivar_memsize): added.
-
-Wed Jun 17 07:04:33 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (iseq_memsize): added.  Use RTypedData instead of RData
-	  for ISeq.
-
-	* vm.c (env_memsize, vm_memsize, thread_memsize): added.  Use
-	  RTypedData instead of RData for Env, VM, Thread.
-
-Wed Jun 17 06:48:28 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* st.c, include/ruby/st.h (st_memsize): added.  This function returns
-	  the memory usage of st_table.
-
-Wed Jun 17 06:19:06 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h: New structure RTypedData, added.
-	  This structure includes more explicit type information for
-	  T_DATA objects.  If RData(obj)->dfree is immediate value `1' on
-	  T_DATA object obj, obj is needed to be accessed with RTYPEDDATA(obj)
-	  instead of RDATA(obj).  A RTypedData structure points the structure
-	  rb_typed_data_t.  rb_typed_data_t includes information such as the
-	  type name of this data, mark and free function what RData includes,
-	  and memsize function show how data consuming the memory size.
-	  Note that you do not need any change existing T_DATA objects.
-	  If you use RDataType instead of RData on T_DATA object,
-	  you can specify explicit type information.
-
-	* gc.c (rb_data_typed_object_alloc, rb_objspace_data_type_memsize,
-	  rb_objspace_data_type_name): added.
-
-Wed Jun 17 06:14:23 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c: fix indent.
-
-Wed Jun 17 06:05:03 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (rb_objspace_each_objects): New C API, added.
-
-Wed Jun 17 00:31:30 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_argf.rb (TestArgf#test_skip): updated test
-	  according to clarified behavior.
-
-Tue Jun 16 22:47:37 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (fptr_finalize): revert last change.  [ruby-dev:38648]
-
-	* io.c (fptr_finalize): skip close(2) for fd 0,1,2.
-
-Tue Jun 16 20:07:09 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (transcode_restartable0): refix can't build with VC9.
-
-Tue Jun 16 16:09:59 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* parse.y (parser_read_escape, parser_tokadd_escape):
-	  replace scan_oct as ruby_scan_oct.
-
-Tue Jun 16 06:40:31 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (fptr_finalize): should close stdin/stdout/stderr when
-	  closed explicitly.   [ruby-core:23853]
-
-	* io.c (argf_skip): should close only when current_file is available.
-
-Tue Jun 16 01:50:02 2009  Tanaka Akira  <akr@fsij.org>
-
-	* vm_eval.c (rb_call0): refine exception message for hidden objects.
-
-Mon Jun 15 22:35:31 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* bignum.c (rb_big2db): (-Float::MAX.to_i*2).to_f should return
-	  -HUGE_VAL (-Infinity).
-
-Mon Jun 15 18:48:41 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (argf_each_line): should return self.  [ruby-core:23852]
-
-	* io.c (argf_each_byte, argf_each_char): ditto.
-
-Mon Jun 15 17:48:42 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (os_obj_of): invoke garbage collection before iteration, to
-	  avoid accessing half recycled object references.  [ruby-dev:38613]
-
-Mon Jun 15 11:04:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* .gdbinit (rp, iseq): load dummy_gdb_enums on demand.
-	  [ruby-dev:38606]
-
-Sun Jun 14 14:57:57 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c, vm_eval.c: add Thread.backtrace.
-
-	* test/ruby/test_thread.rb: add a test.
-
-Sun Jun 14 13:58:32 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* transcode.c (transcode_restartable0): revert last commit because
-	  this change cause SEGV at test-all.
-
-Sun Jun 14 10:49:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext, rb_find_file): canonicalize absolute
-	  paths.  [ruby-core:23845]
-
-	* file.c (rb_file_size): added rdoc.  a patch from Run Paint Run
-	  Run at [ruby-core:23839].
-
-Sun Jun 14 07:53:26 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_fdiv): use fdiv recursively.
-
-	* complex.c (nucomp_expt): reduced code.
-
-Sun Jun 14 03:37:09 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/utf8_mac.trans: remove wrong optimization.
-
-Sun Jun 14 01:53:00 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (transcode_restartable0): can't build with VC9.
-
-Sun Jun 14 01:23:41 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_to_f): use fdiv.
-
-Sat Jun 13 15:03:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (load_lock): show backtrace at circular require.
-
-	* load.c (rb_provide): assumes us-ascii only.
-
-	* load.c (rb_require_safe): FilePathValue() implies rb_str_new4().
-
-	* load.c (rb_mod_autoload): try conversion to path like as
-	  require.  [ruby-core:23834]
-
-Sat Jun 13 09:58:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_ivar): should not set internal encoding ivar as an
-	  ordinary ivar.  [ruby-dev:38596]
-
-Sat Jun 13 07:08:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (rb_f_local_variables): now returns symbols.  a patch from
-	  Run Paint Run Run at [ruby-core:23828].
-
-Sat Jun 13 07:06:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (rb_f_catch): updated rdoc about generalized argument,
-	  and the case without arguments.  [ruby-core:23827]
-
-Sat Jun 13 06:50:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/net/protocol.rb (Net::BufferedIO#rbuf_fill): TimeoutError is
-	  obsolete, use Timeout::Error instead.  [ruby-core:23821]
-
-Sat Jun 13 06:45:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (rb_f_throw): fixed rdoc about exception.
-	  [ruby-core:23824]
-
-Fri Jun 12 14:56:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): associate the input encoding when
-	  copying an absolute path.  [ruby-dev:38594]
-
-Fri Jun 12 02:41:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_replace_shared): shared target must be frozen.
-	  [ruby-core:23727]
-
-Thu Jun 11 21:05:09 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb (exp): omitted redundant function call.
-
-Thu Jun 11 17:49:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (gfCheckVal): never used.
-
-	* ext/bigdecimal/bigdecimal.c (VpInit): fixed format modifiers.
-
-	* ext/bigdecimal/bigdecimal.c (VPrint): constified.
-
-Thu Jun 11 15:27:17 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/prime.rb: documentation typo fixed.  a patch from okkez.
-	  [ruby-dev:38586]
-
-Wed Jun 10 18:15:17 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* dir.c (dir_s_getwd): directory path's encoding should be filesystem's
-	  one.
-
-	* lib/tmpdir.rb: ditto (but not finished yet.)
-
-Wed Jun 10 06:28:15 2009  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*: Upgrade to RubyGems 1.3.4 r2223.
-
-Tue Jun  9 22:38:09 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb (log10): raised exception when the given number is
-	  a negative real.
-
-Tue Jun  9 15:13:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_s_glob): fixed rdoc.  a patch from Joseph Pecoraro a
-	  [ruby-core:23767].
-
-	* dir.c (sys_warning): get rid of type-punning function cast.
-
-	* dir.c (ruby_glob0): get rid of possible overflow.
-
-Tue Jun  9 10:58:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, win32/Makefile.sub (RMALL): need for distclean-rdoc.
-
-Tue Jun  9 01:07:33 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c: rename functions which require a parameter
-	  "rb_thread_t *", the prefix to be rb_threadptr_ instead of
-	  rb_thread_.
-
-	* thread.c (rb_thread_add_event_hook(), rb_thread_remove_event_hook):
-	  change the parameter type from rb_thread_t * to VALUE.
-
-	* eval.c, eval_error.c, eval_intern.h, signal.c, vm_core.h, vm_eval.c:
-	  ditto.
-
-	* include/ruby/intern.h: remove decl of rb_thread_signal_raise() and
-	  rb_thread_signal_exit().
-
-Mon Jun  8 05:07:41 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (rb_thread_create_timer_thread): print fatal error
-	  message to stderr instead of using rb_bug().
-
-	* KNOWNBUGS.rb, bootstraptest/test_fork.rb: move a fixed test.
-
-Sun Jun  7 22:44:20 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb (log): avoided redundant expression.
-
-Sat Jun  6 02:49:05 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_reject_bang): always check frozen status.
-	  [ruby-core:23715]
-
-	* hash.c (rb_hash_update): ditto.
-
-	* hash.c (rb_hash_reject_bang): call rb_hash_foreach() directly.
-
-	* hash.c (rb_hash_update_i): call st_insert() directly.
-
-	* hash.c (rb_hash_update_block_i): ditto.
-
-Fri Jun  5 07:12:32 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mkmf.rb (#link_command): should dup CONFTEST_C which is
-	  frozen.  ref  [ruby-core:23675].  [ruby-core:23702]
-
-Thu Jun  4 02:25:51 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/base64.rb: typo fixed.  a patch from okkez.   [ruby-dev:38564]
-
-Wed Jun  3 09:03:23 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_first): should check negative length.
-
-Tue Jun  2 17:32:40 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (first_i): Enumerator#first should consume only what is
-	  needed.   a patch from Marc-Andre Lafortune.  [ruby-core:23661]
-
-	* enum.c (enum_first): call to_int once for an argument.  based on
-	  a patch from Marc-Andre Lafortune.
-
-Tue Jun  2 13:27:21 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ripper/test_filter.rb: add tests. see [ruby-dev:37856]
-
-Tue Jun  2 07:44:43 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_gsub_bang): modify check at the beginning.
-	  [ruby-core:23662]  ref [ruby-core:23657]
-
-	* string.c (rb_str_rstrip_bang): ditto.  [ruby-core:23657]
-
-	* string.c (rb_str_chop_bang): ditto.
-
-	* string.c (rb_str_chomp_bang): ditto.
-
-	* string.c (rb_str_reverse_bang): modify check added.  [ruby-core:23671]
-
-Mon Jun  1 11:21:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (cont_capture, fiber_store): reraise transferred error.
-
-	* cont.c (fiber_switch): transfers dead fiber error to the previous
-	  or root fiber if the current fiber is dead.  [ruby-core:23651]
-
-Mon Jun  1 10:41:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_exc_new2): optimization for literal.
-
-Mon Jun  1 07:20:02 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_f): returns Inf if
-	  exp is bigger than DBL_MANT_DIG.
-
-Sun May 31 23:28:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): checks for duplication of source
-	  files.
-
-Sun May 31 23:26:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (istrailinggarbage): fixed typo.
-
-Fri May 29 17:10:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* struct.c (Init_Struct): made #to_s an alias to #inspect to
-	  reduce the result of recursive struct.  a patch from ujihisa a
-	  [ruby-dev:38554].
-
-Fri May 29 17:08:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (Init_Hash): made #to_s an alias to #inspect to reduce
-	  the result of recursive hash.  a patch from ujihisa a
-	  [ruby-core:23601].  [ruby-dev:38555]
-
-Fri May 29 09:30:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (collect_all): checks interrupts.  [ruby-core:23594]
-
-Thu May 28 07:39:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (THREAD_MODEL): reject unknown value and checks
-	  pthread.h only when pthread.  [ruby-core:23577]
-
-Thu May 28 03:47:46 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/optparse/opttest.rb: typo fixed.  [ruby-dev:38544]
-
-Thu May 28 03:43:10 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_strftime): update RDoc according to info from
-	  Marc-Andre Lafortune in [ruby-core:23575].  [ruby-core:23564]
-
-Thu May 28 02:40:54 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/uri: don't set @parser if it is DEFAULT_PARSER for marshaling
-	  URI objects between Ruby 1.8 and Ruby 1.9.
-	  [ruby-dev:38377]
-
-Wed May 27 23:00:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (struct parser_params): lex_gets_ptr should be long.
-
-Wed May 27 18:00:15 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigand_int): new function to calculate bignum and
-	  fixnum without allocating internal bignum.
-
-	* bignum.c (bigor_int): ditto.
-
-	* bignum.c (bigxor_int): ditto.
-
-	* bignum.c (bigand_int): even less object allocation.
-
-Wed May 27 14:29:55 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_encoding): more compact encoding information for
-	  US-ASCII and UTF-8.  [incompatible] [experimental]
-
-	* marshal.c (r_ivar): restore :E encoding information.
-
-Wed May 27 14:08:39 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* st.c (st_insert2): new function with processing new key,
-	  e.g. copy.
-
-	* hash.c (rb_hash_aset): use st_insert2() to reduce redundant
-	  st_lookup calls.
-
-Wed May 27 02:31:38 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_getc): the function for
-	  rl_getc_function must be a byte function.
-	  so use getbyte method. [ruby-dev:38535]
-
-Tue May 26 14:24:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c: fixed types.
-
-	* common.mk (bignum.o, numeric.o): depend on util.h.
-
-	* bignum.c, marshal.c: fixed types.
-
-	* numeric.c (infinite_value): use ruby_div0.
-
-	* include/ruby/util.h (ruby_div0): moved from marshal.c.
-
-Tue May 26 11:01:41 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* lib/mkmf.rb: use map! to replace strings in $objs array.
-
-Tue May 26 10:12:08 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bignew_1): inline memory allocation.
-
-	* bignum.c (bigtrunc): call rb_big_resize() only when needed.
-
-	* bignum.c (bigfixize): declare inline.
-
-Tue May 26 05:39:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (FilePathValue): prevent from GC.
-
-	* include/ruby/ruby.h (NUM2LONG): added GCC specific optimization.
-
-Tue May 26 03:41:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (rb_gmtime, rb_localtime): gmtime and localtime return
-	  NULL on error.  [ruby-core:23551]
-
-Tue May 26 03:38:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_each_char, rb_str_each_codepoint): string
-	  length must be long.
-
-Mon May 25 13:27:32 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* lib/mkmf.rb: dont use gsub! method for frozen string.
-
-Mon May 25 11:47:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/mkconfig.rb, tool/instruby.rb: removed redundant code.
-
-Mon May 25 09:34:09 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_hash): avoid calling rb_enc_str_asciionly_p().
-
-	* string.c (rb_str_replace): avoid redundant calling rb_str_new4().
-
-	* string.c (str_replace): factor out replacement from
-	  rb_str_replace() without type check nor discarding the
-	  destination contents.
-
-Mon May 25 08:06:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_partition): should use the converted result.  a
-	  patch from Marc-Andre Lafortune at [ruby-core:23540].
-
-	* string.c (rb_str_rpartition): ditto.
-
-Mon May 25 06:25:38 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_hash.rb (TestHash::test_equal2): recursive hashes
-	  are handled properly now. ref: [ruby-core:23402]
-
-	* test/ruby/test_m17n.rb (TestM17N#test_sprintf_p): test fixed
-
-Mon May 25 05:32:19 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::HTTP_STATUS): typo fixed.  a patch from
-	  Nobuhiro IMAI.  [ruby-dev:38538]
-
-Sun May 24 22:48:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_exec_recursive_paired): new function for proper
-	  handling of recursive arrays.  [EXPERIMENTAL] [ruby-core:23402]
-
-	* array.c (rb_ary_equal, rb_ary_eql, rb_ary_cmp): use above.
-
-	* hash.c (hash_equal): ditto.
-
-Sun May 24 22:39:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (syserr_initialize): errno is int.
-
-Sun May 24 00:52:54 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in ($ridir): new configuration. [ruby-core:23520].
-	  c.f. [ruby-core:23519].
-
-	  (--with-ridir): new configure option.
-
-	* tool/instruby.rb (:doc, :rdoc): uses $ridir instead of
-	  a fixed path.
-
-	* lib/rdoc/ri/paths.rb: follows $ridir.
-
-	* Makefile.in: removes RIDATADIR which is no longer used.
-
-	* bcc32/Makefile.sub: generates the 'ridir' entry for RbConfig.
-	  removes RIDATADIR which is no longer used.
-
-	* win32/Makefile.sub: ditto.
-
-Sat May 23 23:52:33 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_char): return original string.
-	  [ruby-core:23499]
-
-	* string.c (rb_str_each_codepoint): protect string from
-	  modification.
-
-Sat May 23 21:48:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/handle.c (rb_dlhandle_s_sym): added a method to access
-	  using RTLD_NEXT.  [ruby-dev:38152]
-
-	* ext/dl/handle.c (Init_dlhandle): added constants DEFAULT and
-	  NEXT which correspond to RTLD_DEFAULT and RTLD_NEXT.
-
-Sat May 23 18:53:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/lib/dl/cparser.rb (DL::CParser#parse_struct_signature):
-	  splitting with regexp source string is obsolete.  a patch from
-	  Minwoo Lee at [ruby-core:23494].
-
-	* ext/dl/cptr.c (rb_dlptr_cmp): return signed value, and restrict
-	  to Fixnum.  [ruby-dev:38533]
-
-Fri May 22 23:22:53 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* missing/vsnprintf.c (errno): [BUG] fixes a compilation
-	  error on SIZEOF_LONG > SIZEOF_INT.
-	  (BSD_vfprintf): ditto.
-
-Fri May 22 23:20:48 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec: follows runruby.rb's move at r23542.
-
-Fri May 22 21:38:55 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* NEWS: add Time#to_r.
-
-Fri May 22 20:29:01 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* config.guess: moved into tool/.
-
-	* config.sub: ditto.
-
-	* install-sh: ditto
-
-	* configure.in: follows the moves.
-
-	* LEGAL: ditto.
-
-Fri May 22 20:10:18 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* instruby.rb: moved into tool/.
-
-	* mkconfig.rb: ditto.
-
-	* rubytest.rb: ditto.
-
-	* runruby.rb: ditto.
-
-	* common.mk: follows the moves.
-
-	* configure.in: ditto.
-
-	* win32/Makefile.sub: ditto.
-
-Fri May 22 05:09:43 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_slice_bang): avoid call of rb_scan_args() unless
-	  it's really necessary.
-
-Thu May 21 22:17:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/id.h.tmpl, id.h (enum ruby_method_ids): added some IDs.
-
-	* debug.c (dummy_gdb_enums): added enum ruby_method_ids.
-
-	* .gdbinit (rp): improved output of Symbol.
-
-Thu May 21 21:07:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD_vfprintf): support for 'z' modifier.
-
-Thu May 21 18:55:33 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* gem_prelude.rb (Gem.default_dir and misc.): use rubylibprefix.
-	  follows the change in r23368.
-
-Thu May 21 12:07:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (RB_EVENT_HOOKS_HAVE_CALLBACK_DATA):
-	  new macro for compatibility check.
-
-Thu May 21 01:43:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_long2int, RARRAY_LENINT): check long to
-	  cast to int.  [ruby-dev:38508]
-
-	* struct.c, vm_eval.c, vm_insnhelper.c: use RARRAY_LENINT.
-
-Wed May 20 21:00:27 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* rb_enc_get_index: allows an arbitrary RData as the argument but not
-	  only what points a rb_encoding.
-
-Wed May 20 20:54:37 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/.gitignore: ignores rubyspec/ and mspec/.
-
-Wed May 20 19:41:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* struct.c (rb_struct_new): get rid of too large alloca.
-
-	* struct.c (rb_struct_hash): use long.
-
-Wed May 20 18:58:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c, vm_insnhelper.c: argument number is restricted to
-	  int, and fixed overflow.
-
-Wed May 20 18:34:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (zip_ary): should use long.
-
-	* enumerator.c (inspect_enumerator): should use long.
-
-Wed May 20 09:18:44 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_count): optimized for 1byte string count by
-	  avoiding tr_setup_table().
-
-Wed May 20 06:25:29 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_fast_mbclen): faster mbclen for strings known
-	  to be valid.
-
-	* string.c (enc_strlen): coderange specified version of
-	  rb_enc_strlen().  use rb_enc_fast_mbclen() if coderange is 7bit
-	  or valid.
-
-	* string.c (str_gsub): use rb_enc_fast_mbclen().
-
-	* string.c (rb_str_reverse, rb_str_split_m, rb_str_each_char,
-	  scan_once): ditto.
-
-Wed May 20 06:20:05 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#unlink): close first for Windows.  a
-	  patch from Florian Frank.  [ruby-core:23505]
-
-Wed May 20 00:13:38 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_codepoint_len): combine rb_enc_codepoint()
-	  and rb_enc_codelen() in one function to reduce calls.
-
-	* encoding.c (rb_enc_codepoint): compatibility function.
-
-	* sprintf.c (rb_str_format): use rb_enc_codepoint_len().
-
-	* string.c (rb_str_inspect, rb_str_upcase_bang,
-	  rb_str_downcase_bang, rb_str_capitalize_bang,
-	  rb_str_swapcase_bang, trnext, tr_trans, rb_str_delete_bang,
-	  rb_str_squeeze_bang, rb_str_count, rb_str_split_m,
-	  rb_str_each_line, rb_str_each_codepoint, rb_str_lstrip_bang,
-	  sym_printable): ditto.
-
-	* transcode.c (make_econv_exception): use rb_enc_mbc_to_codepoint()
-
-Wed May 20 00:05:52 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_method.c (rb_attr): should preserve encoding info.
-	  [ruby-dev:38498]
-
-Tue May 19 22:54:35 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* time.c (time_minus): always return a Float.  [ruby-dev:38446]
-
-	* time.c (time_to_r): new method.  [ruby-dev:38461]
-
-Tue May 19 13:59:35 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (clone_method): add cast to remove warning from
-	  rb_gc_write_barrier().
-
-Tue May 19 13:54:15 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (struct_ivar_get): new function to avoid repeated
-	  rb_intern() calls.
-
-	* struct.c (rb_struct_iv_get): use struct_ivar_get()
-
-	* struct.c (num_members): ditto.
-
-	* struct.c (rb_struct_s_members): ditto.
-
-	* class.c (rb_singleton_class): cache symbol to reduce calls to
-	  rb_intern().
-
-Tue May 19 07:52:05 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/test_time.rb: make tests timezone independent.
-	  reported by zunda.  [ruby-dev:38492]
-
-Mon May 18 21:40:11 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb (Pathname#sub): suppress a warning.  [ruby-dev:38488]
-
-Sun May 17 23:23:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (SRC_EXT): should be flat.
-	  http://twitter.com/_tad_/status/1825862632
-
-Sun May 17 23:05:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): VARIABLE_LIBPATH is always
-	  defined, see its value instead.
-
-Sun May 17 18:59:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* node.h (nd_line): NODE_LMASK is not needed.
-
-	* node.h (NOEX_SAFE): made int.
-
-Sun May 17 14:23:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (rb_parse_in_eval): returns true in true eval, not in
-	  main.  [ruby-dev:38382]
-
-	* parse.y (program): inherits dvars in eval or main.
-
-Sun May 17 14:02:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_script): sets also VM toplevel program name.
-
-	* ruby.c (process_options): no longer needs additional frame.
-
-	* vm.c (rb_vm_get_sourceline): should not access out of bound.
-
-Sun May 17 09:47:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (cmdline_options_init): initialize encodings.
-
-	* ruby.c (add_modules, require_libraries, process_sflag):
-
-	* ruby.c (process_sflag): not process twice.
-
-	* ruby.c (moreswitches): get rid of possible overflow.
-
-Sun May 17 09:31:05 2009  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (foletypelib_name): should return
-	  encoded name corresponding to WIN32OLE.codepage.
-
-Sun May 17 09:02:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): support for cygwin 1.7.  see
-	  [ruby-core:23241].
-	  gets rid of possible buffer overflow with realpath().
-
-	* ruby.c (set_arg0): get rids of overrun.
-
-Sat May 16 18:38:32 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb: add nil check.
-
-Sat May 16 18:36:01 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/test_maker_atom_feed.rb: suppress warnings.
-
-Sat May 16 18:33:15 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* NEWS: add RSS::Maker.supported?(version).
-
-Sat May 16 18:26:42 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb, test/test_parser_1.0.rb: fix foaf:Image
-	  element causes parse error even if ignore_unknown_element mode.
-
-Sat May 16 18:14:19 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker.rb, lib/rss/maker/0.9.rb,
-	  test/test_maker_*.rb: add RSS::Maker.supported?
-
-Sat May 16 18:12:39 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/content/*, lib/rss/dublincore/*: fix circular require.
-	* test/test_maker_atom_feed.rb,
-	  test/test_maker_atom_entry.rb: suppress warnings.
-
-Sat May 16 18:07:17 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/feed.rb, test/test_maker_atom_feed.rb:
-	  remove needless codes.
-
-Sat May 16 18:05:07 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/entry.rb: fix a typo.
-
-Sat May 16 18:02:57 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/feed.rb, test/test_maker_atom_entry.rb,
-	  test/test_maker_atom_feed.rb: fix duplicated dc:date.
-	  Reported by Kazuhiro NISHIYAMA. Thanks!!! [ruby-list:46014]
-
-Sat May 16 18:02:16 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb, lib/rss/maker/1.0.rb, lib/rss/maker/feed.rb,
-	  test/rss/test_maker_1.0.rb, test/rss/test_maker_atom_feed.rb:
-	  RSS 1.0 and Atom feed maker treat maker.channel.language as
-	  maker.channel.dc_language.
-
-Sat May 16 17:57:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/lib/dl/callback.rb (DL#remove_callback_internal): ignore
-	  unbound function.  [ruby-dev:38474]
-
-Sat May 16 17:51:11 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* sample/rss/rss_recent.rb, sample/rss/list_description.rb: use
-	  UTF-8.
-
-Sat May 16 17:47:55 2009  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, test/rss/test_version.rb (RSS::VERSION):
-	  0.2.5 -> 0.2.6.
-
-Sat May 16 17:26:04 2009  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* iseq.c (rb_iseq_clone): use longlife object and insert write barrier.
-
-	* vm_insnhelper.c (vm_cref_push): ditto.
-
-	* vm_insnhelper.h (COPY_CREF): insert write barrier.
-
-Sat May 16 13:49:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_autoload_load): gets rid of false warning.
-	  [ruby-core:23466]
-
-Sat May 16 10:59:54 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/drb/dhasenc.rb: add magic comment for encoding.
-
-	* sample/mine.rb: ditto.
-
-	* ext/tk/sample/tcltklib/sample1.rb: ditto.
-
-Sat May 16 09:49:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (magic_comment_encoding): ignores unused emacs-style
-	  encoding comment, as like Vim styles.  [ruby-core:23470]
-
-Sat May 16 09:30:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* defs/keywords (reserved_word): made inline function static.
-	  [ruby-core:23210]
-
-	* parse.y (rb_reserved_word): ordinary function for ripper.
-
-Sat May 16 09:19:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (magic_comment_encoding): use rb_compile_warning() to
-	  show the currently parsing file name.  [ruby-core:23469]
-
-Sat May 16 09:03:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ruby_version): now version.h includes
-	  include/ruby/version.h, so need to tell to cpp to see
-	  $(srcdir)/include.  [ruby-core:23468]
-
-Fri May 15 17:35:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_shift, rb_ary_shift_m): clears unused elements.
-	  [ruby-dev:38448]
-
-Fri May 15 15:15:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_autoload_load): checks if iv_tbl is valid.
-	  [ruby-dev:38456]
-
-Fri May 15 11:17:48 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/setup.mak (-version-): now version.h includes
-	  include/ruby/version.h, so need to tell to cpp to check
-	  $(srcdir)/include.
-	  reported by KIMURA Koichi at http://www.kt.rim.or.jp/%7ekbk/zakkicho/09/zakkicho0905b.html#D20090514-6
-
-Thu May 14 16:13:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_getpwuid): use rb_uid_t.  [ruby-dev:38443]
-
-	* ext/stringio/stringio.c (strio_ungetbyte): encoding should no
-	  be effective.
-
-Thu May 14 10:17:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sample/test.rb (valid_syntax?): defaults to us-ascii.
-
-Wed May 13 22:34:31 2009  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c: add longlife garbage collection. [ruby-dev:38423]
-	  (NORMAL_HEAPS_USED): new macro.
-	  (LONGLIFE_ALLOCATE_HEAPS_MIN): ditto.
-	  (add_longlife_heaps_slot): new function.
-	  (rb_newobj_from_longlife_heap): ditto.
-	  (rb_newobj_longlife): ditto.
-	  (rb_node_newnode_longlife): ditto.
-	  (rb_gc_write_barrier): ditto.
-	  (remembered_set_recycle): ditto.
-	  (rb_gc_mark_remembered_set): ditto.
-	  (clear_mark_longlife_heaps): ditto.
-	  (gc_sweep_for_longlife): ditto.
-	  (assign_heap_slot): new argument to longlife heaps slot.
-	  (add_freelist): ditto.
-	  (gc_sweep): avoid longlife heap slot. set longlife_collection
-	  flag at add heap.
-	  (rb_gc_force_recycle): avoid mark object and remembered_set
-	  object.
-	  (garbage_collect): add longlife collection.
-	  (rb_gc_start): invoke longlife collection.
-	  (gc_profile_record_get): for longlife collection profile.
-	  (gc_profile_result): ditto.
-
-	* include/ruby/intern.h (rb_gc_write_barrier): declared.
-
-	* include/ruby/ruby.h (FL_REMEMBERED_SET): renamed from FL_RESERVED.
-
-	* debug.c (FL_REMEMBERED_SET): ditto.
-
-	* insns.def (setinlinecache): insert write barrier.
-
-	* vm_insnhelper.c (vm_method_search): ditto.
-
-	* set_relation (set_relation): use longlife object.
-
-	* vm.c (vm_define_method): ditto.
-
-	* vm_core.h (NEW_INLINE_CACHE_ENTRY): ditto.
-
-	* vm_method.c (rb_add_method): ditto.
-
-	* class.c (rb_add_method): ditto.
-
-	* node.h (NEW_NODE_LONGLIFE): new macro.
-	  (rb_node_newnode_longlife): declared.
-
-Wed May 13 15:23:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/version.h: extracted the extensions interface and
-	  the never-changeable info.
-
-Wed May 13 03:20:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_init_1): unused variable removed.
-
-Tue May 12 21:03:02 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: support fixed UTC offset.  [ruby-dev:38326]
-	  (leap_year_v_p): new macro.
-	  (TIME_FIXOFF_P): new macro.
-	  (TIME_SET_FIXOFF): new macro.
-	  (time_init_0): renamed from time_init.
-	  (time_set_utc_offset): new function.
-	  (vtm_add_offset): new function.
-	  (utc_offset_arg): new function.
-	  (time_init_1): new function.
-	  (time_init): call time_init_0 or time_init_1 according argc.
-	  (validate_utc_offset): new function.
-	  (time_localtime_m): new function.
-	  (time_fixoff): new function.
-	  (time_getlocaltime): take optional UTC offset argument.
-	  (time_get_tm): support fixed UTC offset time.
-	  (Init_Time): make Time#{initialize,localtime,getlocal} varargs.
-
-	* strftime.c (rb_strftime): vtm->zone can be NULL now.
-
-Tue May 12 18:23:40 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* yarvtest: removed because it's outdated.
-
-Mon May 11 21:46:20 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: add semicolons to some grammar rules not terminated
-	  with them.  a patch from Dave B in [ruby-core:23422].
-
-Mon May 11 20:08:33 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* io.c (Init_IO): add constant File::NOATIME.  [ruby-core:23194]
-
-Mon May 11 13:08:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb (rubylibdir): use rubylibprefix.  [ruby-dev:38426]
-
-Mon May 11 08:37:04 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_coerce): support
-	   coercing into Rational.   [ruby-core:23415]
-
-Mon May 11 04:39:45 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/smtp.rb (Net::SMTP#check_auth_args): should not change
-	  number of methods for the sake of compatibility.
-
-Sun May 10 11:36:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_instance_p): new function to check if
-	  the argument is an instance of DL::CFunc.
-
-	* ext/dl/cptr.c (rb_dlptr_initialize, rb_dlptr_s_malloc): checks
-	  if DL::CFunc.  [ruby-dev:38403].
-
-	* ext/dl/lib/dl/cparser.rb (DL::CParser#parse_signature): strips
-	  spaces.  based on a patch from Takashi Tamura in [ruby-dev:38398].
-
-	* ext/dl/lib/dl/value.rb (DL::ValueUtil#wrap_arg): block must be
-	  given if arg is not bound.  [ruby-dev:38404]
-
-	* ext/dl/cfunc.c (rb_dlcfunc_instance_p): new function to check if
-	  the argument is an instance of DL::CFunc.
-
-Sat May  9 19:57:00 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_float.rb (TestFloat#test_sleep_with_Float): add a
-	  test. see [ruby-core:23282]
-
-Sat May  9 19:23:46 2009  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: use subsec instead of nsec.
-
-Sat May  9 12:19:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c: 3rd argument of rb_hash_foreach() is VALUE.
-
-	* hash.c (rb_any_hash, recursive_hash): use VALUE for hash.
-
-Sat May  9 11:14:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (rb_f_catch): gets rid of issue with gcc 4.4.  a patch
-	  from Alexey Froloff in [ruby-core:23398].  [ruby-core:22924]
-
-Fri May  8 19:38:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (try_link0): removes waste dSYM directories left
-	  when debug and universal-binary are enabled.
-
-	* lib/mkmf.rb (check_sizeof): fixed wrong recurring result for
-	  intrinsic types.
-
-Fri May  8 10:14:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, configure.in, win32/Makefile.sub (RUBY_BASE_NAME):
-	  program base name.  [ruby-dev:38241]
-
-	* configure.in (--with-soname): base name of shared library.
-	  [ruby-dev:38290]
-
-Fri May  8 10:07:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_flatten_bang): clears temporary array.
-
-Fri May  8 02:30:14 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (SortedSet#add): Do not require each newly added
-	  element to be Comparable but to respond to <=>. [ruby-dev:38371]
-
-Thu May  7 21:42:51 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rubyoptions.rb (test_indentation_check): add a test
-	  for indentation check.  [ruby-dev:38382]
-
-Thu May  7 16:40:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_flatten_bang): returns nil if nothing changed.
-	  a patch from Marc-Andre Lafortune in [ruby-core:23382].
-
-Thu May  7 14:26:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sample): negative sample number is invalid.
-	  [ruby-core:23374]
-
-Thu May  7 14:16:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c, include/ruby/encoding.h: fixed types.
-
-	* include/ruby/encoding.h (rb_enc_nth): long is used for index.
-
-Thu May  7 14:01:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (r_le): fixed types.
-
-	* range.c (range_eql): fixed rdoc.
-
-Thu May  7 13:10:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open): should be rb_pid_t.
-
-Wed May  6 16:50:20 2009  Tanaka Akira  <akr@fsij.org>
-
-	* math.c (math_gamma): use a table for positive small integers.
-
-Wed May  6 09:27:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.ja: code for THINK_C does not exist already.  [Bug #1435]
-
-Wed May  6 05:33:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (CFLAGS, CXXFLAGS): strips extra spaces.
-
-Tue May  5 11:29:07 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/ifchange: Fix: arguments which begin with minus sign may
-	  parsed as options.  Because of older systems, don't use --
-	  but use parentheses.
-
-Tue May  5 10:42:28 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json: Update to JSON 1.1.4.
-
-Tue May  5 07:22:37 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c: NOMAP is now multibyte direct map.
-
-	* transcode.c: remove ASIS.
-
-	* transcode_data.h: ditto.
-
-	* tool/transcode-tb (ActionMap#generate_info): remove :asis.
-
-	* tool/transcode-tb (ActionMap#generate_info): add :nomap0.
-
-	* enc/trans/utf8_mac.trans: replace :asis by :nomap0.
-
-Sat May  2 22:53:02 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (SortedSet): Fix document. [Bug #1429]
-
-Sat May  2 10:34:29 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/utf8_mac-tbl.rb: don't use Unicode escape.
-
-	* enc/trans/utf8_mac.trans: follow above.
-
-Sat May  2 09:19:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (Init_Array): made #to_s an alias to #inspect to reduce
-	  the result of recursive array.  a patch from ujihisa at
-	  [ruby-dev:38362]
-
-Fri May  1 16:50:05 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#merge): Only directly use the passed objects
-	  @hash instance variable when self and the passed object are
-	  instances of the same class. [Bug #118]
-
-Fri May  1 16:44:11 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (SortedSet#add): Do not let an incomparable object
-	  in. [Bug #118]
-
-Fri May  1 13:18:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h (_longjmp): never return.  see [ruby-core:23241]
-
-Fri May  1 01:31:19 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/extmk.rb: use RbConfig instead of Config.
-
-	* instruby.rb: ditto.
-
-	* lib/rubygems.rb: ditto.
-
-	* test/rubygems/test_config.rb: ditto.
-
-Thu Apr 30 21:23:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* runruby.rb: use RbConfig::CONFIG instead of Config::CONFIG.
-
-	* spec/default.mspec: ditto.
-
-	* yarvtest/yarvtest.rb: ditto.
-
-	* instruby.rb: ditto.
-
-	* benchmark/report.rb: ditto.
-
-	* benchmark/runc.rb: ditto.
-
-	* tool/eval.rb: ditto.
-
-	* test/rubygems/test_gem.rb: ditto.
-
-	* test/rubygems/test_config.rb: ditto.
-
-	* test/rubygems/test_gem_platform.rb: ditto.
-
-Thu Apr 30 18:18:13 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/http.rb: documentation typo fixed.  [ruby-core:23335]
-
-Thu Apr 30 15:27:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/utf8_mac.trans: get rid of a 1.9 feature for cross
-	  compile.
-
-Thu Apr 30 11:35:30 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding): Change filesystem_encoding of
-	  Mac OS X to UTF-8.
-
-Wed Apr 29 21:23:40 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/iso_2022_jp.h: add CP50221.
-
-	* enc/trans/iso2022.trans: add converter for CP50221.
-
-Wed Apr 29 15:22:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_join): recursive array has no meaning as path
-	  name.  [ruby-core:23329]
-
-Tue Apr 28 19:09:45 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/test_timeout.rb (TestTimeout#test_timeout): add a test.
-
-Tue Apr 28 07:13:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pp.rb (Struct#pretty_print): coerce to a string since
-	  anonymous class has name no longer.  [ruby-dev:38349]
-
-Mon Apr 27 16:47:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ruby_version): uses sed instead of grep if the
-	  result is need, to get rid of GREP_OPTIONS.  [ruby-dev:38336]
-
-Mon Apr 27 01:25:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_getc): use rl_getc_function if
-	  possible, to get rid of hang up at EOF without a newline.
-
-Sun Apr 26 23:19:32 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/utf8_mac.trans: Add converter for UTF8-MAC.
-
-	* enc/trans/utf8_mac-tbl.rb: ditto.
-
-	* test/ruby/test_econv.rb: tests for above.
-
-Sun Apr 26 22:17:02 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/transcode-tb (ActionMap#each_firstbyte):
-	  if :asis collides other mappings, use another.
-
-	* tool/transcode-tb (ActionMap#generate_info):
-	  add :asis for ASIS.
-
-Sun Apr 26 21:59:43 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (ASIS): added for multi byte direct map.
-
-	* transcode.c (transcode_restartable0): ditto.
-
-Sun Apr 26 20:33:12 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/transcode-tb (ActionMap#generate_node):
-	  Use ActionMap#gennode instead of generate_node
-	  because of initialization.
-
-Sun Apr 26 20:21:39 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* .gitignore: added.
-
-Sun Apr 26 20:17:24 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/rake.rb: use RbConfig::CONFIG instead of Config::CONFIG.
-
-	* lib/rbconfig/datadir.rb: ditto.
-
-Sun Apr 26 19:30:29 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_arg): unused variable removed.
-
-Sun Apr 26 18:35:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_reopen): keeps pathv for prep_stdio.  [ruby-dev:38131]
-
-Sun Apr 26 15:13:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#parse_in_order): do not make an
-	  option from non-option argument.  [ruby-dev:38333]
-
-Sat Apr 25 19:11:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ac_cv_func_daemon): use daemon(3) only on *BSD.
-
-	* process.c (proc_daemon): double fork to ensure not having ctty.
-	  [ruby-core:23305]
-
-Sat Apr 25 16:19:48 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (month_arg): extracted from time_arg.
-	  (validate_vtm): ditto.
-
-Sat Apr 25 16:03:21 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (TIME_COPY_GMT): new macro.
-	  (time_s_at): use TIME_COPY_GMT.
-	  (time_succ): ditto.
-
-Sat Apr 25 15:54:04 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_mload): use TIME_SET_UTC.
-
-Sat Apr 25 15:47:54 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_get_tm): take time_object instead of gmt.
-
-Sat Apr 25 15:39:44 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_succ): refactored to avoid gmt variable.
-	  (strftimev): use TIME_UTC_P.
-	  (time_strftime): ditto.
-
-Sat Apr 25 15:21:33 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (TIME_UTC_P): new macro.
-	  (TIME_SET_UTC): ditto.
-	  (TIME_LOCALTIME_P): ditto.
-	  (TIME_SET_LOCALTIME): ditto.
-	  (time_utc_p): use the above macro.
-	  (time_localtime): ditto.
-	  (time_localtime): ditto.
-	  (time_gmtime): ditto.
-	  (time_to_s): ditto.
-	  (time_add): ditto.
-	  (time_sec): ditto.
-	  (time_min): ditto.
-	  (time_hour): ditto.
-	  (time_mday): ditto.
-	  (time_mon): ditto.
-	  (time_year): ditto.
-	  (time_wday): ditto.
-	  (wday_p): ditto.
-	  (time_yday): ditto.
-	  (time_isdst): ditto.
-	  (time_zone): ditto.
-	  (time_utc_offset): ditto.
-	  (time_to_a): ditto.
-	  (strftimev): ditto.
-	  (time_strftime): ditto.
-	  (time_mdump): ditto.
-
-Thu Apr 23 01:30:37 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/zlib/zlib.c (Zlib::GzipFile#path): New method.
-
-Wed Apr 22 20:25:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_timespec): check out-of-range.  [ruby-core:23282]
-	  [Bug #1396]
-
-Wed Apr 22 19:33:13 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.parse): use year completion in Date._parse.
-
-Wed Apr 22 11:12:15 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* time.c (GMTIME, LOCALTIME): should set result if not have *_r().
-
-	* time.c (localtime_with_gmtoff): now always needed tmbuf.
-
-Wed Apr 22 10:38:47 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* dir.c (glob_helper): C99(gcc)-ism.
-
-	* time.c (find_time_t): GUESS macro needs the variable named ``result''
-	  always.
-
-Wed Apr 22 09:27:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (localtime_with_gmtoff): fixed cross function jump.
-
-Wed Apr 22 03:06:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time#rfc2822): pad leading zeros for year.
-	  (Time#httpdate): ditto.
-	  (Time#xmlschema): ditto.
-
-Wed Apr 22 02:10:48 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time#xmlschema): use subsec instead of nsec.
-
-Wed Apr 22 01:27:38 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_arg): use the year argument as-is.  [ruby-dev:38194]
-
-	* lib/time.rb (Time.parse): interpret small year 0..99 as 1950..2049.
-
-Wed Apr 22 00:32:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (find_time_t): constified.
-
-Wed Apr 22 00:11:19 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (leap_year_v_p): removed.
-
-Tue Apr 21 23:52:45 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: remove time_t restriction from Time class.
-
-	* timev.h: new file to define struct vtm.
-
-	* strftime.c: format struct vtm instead of struct tm.
-
-	* ext/syck/rubyext.c (mktime_do): don't use time_t;
-
-	[ruby-dev:38191]
-
-Tue Apr 21 09:25:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_path, dir_each, glob_helper): use readdir_r() if
-	  available.
-
-Tue Apr 21 09:20:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (init_mkmf): needs default library path even if
-	  cross compiling.
-
-Tue Apr 21 07:07:45 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_push): bypass rb_ary_store().
-
-Tue Apr 21 01:25:16 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigsub_int): subtraction without making internal
-	  bignum values.
-
-	* bignum.c (bigadd_int): ditto for addition.
-
-	* bignum.c (bigtrunc): declare inline.
-
-	* bignum.c (rb_quad_pack): fix condition.
-
-Tue Apr 21 01:13:42 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/setup (config.h): added TIMET2NUM and NUM2TIMET to match
-	  the change in time.c
-
-Mon Apr 20 20:29:04 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_split_m): faster processing on 7bit strings.
-
-	* string.c (ascii_isspace): faster isspace() for 7bit strings.
-
-Sun Apr 19 14:43:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_cleanup): the order of local variables on stack is
-	  undefined.  should use outermost VALUE for ruby_init_stack.
-
-	* gc.c (ruby_get_stack_grow_direction, Init_stack): allows volatile
-	  pointer.
-
-	* thread_*.c (ruby_init_stack): ditto.
-
-Sun Apr 19 13:17:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gem_prelude.rb (Gem::QuickLoader#push_gem_version_on_load_path):
-	  check for requirement if the gem is installed.  a patch from
-	  Kyosuke MOROHASHI at [ruby-dev:38020].
-
-Sun Apr 19 01:39:17 2009  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (proc_seteuid_m): defined to use rb_f_notimplement if not
-	  implemented.
-	  (proc_setegid_m): ditto.
-
-Sun Apr 19 01:03:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (proc_setuid): use rb_f_notimplement if not implemented.
-	  (proc_setgid): ditto.
-
-Sat Apr 18 23:07:18 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/readline/readline.c: use rb_f_notimplement for methods not
-	  implemented.
-
-	* ext/openssl/ossl_engine.c: ditto.
-
-	* ext/openssl/ossl_config.c: ditto.
-
-	* ext/openssl/ossl_cipher.c: ditto.
-
-	* ext/openssl/ossl_pkcs5.c: ditto.
-
-	* ext/openssl/ossl_x509ext.c: ditto.
-
-	* ext/socket/socket.c: ditto.
-
-	* ext/socket/basicsocket.c: ditto.
-
-	* ext/socket/ancdata.c: ditto.
-
-	* ext/socket/unixsocket.c: ditto.
-
-	* ext/iconv/iconv.c: ditto.
-
-Sat Apr 18 21:07:34 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/curses/curses.c: use rb_f_notimplement for methods not
-	  implemented.
-
-Fri Apr 17 01:51:17 2009  Tanaka Akira  <akr@fsij.org>
-
-	* node.h (rb_notimplement_body_p): declared.
-
-	* vm_method.c (Init_eval_method): suppress a warning.
-
-	* io.c (rb_io_fsync): use rb_f_notimplement if not implemented.
-	  (rb_io_close_on_exec_p): ditto.
-	  (rb_io_set_close_on_exec): ditto.
-	  (rb_io_fcntl): ditto.
-	  (rb_f_syscall): ditto.
-
-	* dir.c (dir_tell): ditto.
-	  (dir_seek): ditto.
-	  (dir_s_chroot): ditto.
-
-	* process.c (proc_getpgrp): ditto.
-	  (proc_setpgrp): ditto.
-	  (proc_getpgid): ditto.
-	  (proc_setpgid): ditto.
-	  (proc_setsid): ditto.
-	  (proc_getpriority): ditto.
-	  (proc_setpriority): ditto.
-	  (proc_getrlimit): ditto.
-	  (proc_setrlimit): ditto.
-	  (p_sys_setuid): ditto.
-	  (p_sys_setruid): ditto.
-	  (p_sys_seteuid): ditto.
-	  (p_sys_setreuid): ditto.
-	  (p_sys_setresuid): ditto.
-	  (p_sys_setgid): ditto.
-	  (p_sys_setrgid): ditto.
-	  (p_sys_setegid): ditto.
-	  (p_sys_setregid): ditto.
-	  (p_sys_setreuid): ditto.
-	  (p_sys_setresgid): ditto.
-	  (p_sys_issetugid): ditto.
-	  (proc_getgroups): ditto.
-	  (proc_setgroups): ditto.
-	  (proc_initgroups): ditto.
-	  (proc_daemon): ditto.
-	  (rb_proc_times): ditto.
-
-	* file.c (rb_file_s_lchown): ditto.
-	  (rb_file_s_link): ditto.
-	  (rb_file_s_symlink): ditto.
-	  (rb_file_s_readlink): ditto.
-	  (rb_file_s_truncate): ditto.
-	  (rb_file_truncate): ditto.
-
-Fri Apr 17 00:53:47 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/cgi/core.rb (read_multipart): When path is not defined,
-	  define local_path as a method always returning nil instead of
-	  aliasing.  This is because StringIO#path no longer exists.
-
-Fri Apr 17 00:45:09 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* dir.c (bracket): fix escape handling for range character in bracket
-	  of fnmatch pattern.  e.g., '[a\-c]' should not match 'b'.
-
-Thu Apr 16 23:09:03 2009  Tanaka Akira  <akr@fsij.org>
-
-	* class.c (rb_define_method_id): use rb_define_notimplement_method_id
-	  if rb_f_notimplement is given.
-	  (rb_define_protected_method): ditto.
-	  (rb_define_private_method): ditto.
-	  (rb_define_method): use rb_define_method_id.
-
-	* include/ruby/intern.h (rb_f_notimplement): declared.
-	  (rb_define_notimplement_method_id): declared.
-
-	* proc.c (method_inspect): show not-implemented.
-
-	* vm_method.c (notimplement_body): new variable.
-	  (rb_notimplement_body_p): new function.
-	  (rb_method_boundp): return false if not implemented.
-	  (rb_f_notimplement): new function.
-	  (rb_define_notimplement_method_id): new function.
-
-	* process.c (rb_f_fork): use rb_f_notimplement if not implemented.
-
-	* file.c (rb_file_s_lchmod): use rb_f_notimplement if not implemented.
-
-Wed Apr 15 20:24:49 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_flatten): flatten(0) works as Array#dup.
-	  [ruby-core:23168]
-
-	* test/ruby/test_array.rb: add a test for above.
-
-Wed Apr 15 11:53:35 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (fnmatch_helper): use rb_enc_precise_mbclen and
-	  fail if bytes are invalid. [ruby-dev:38307]
-
-Tue Apr 14 18:11:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (bracket): if same in bytes, path is matching.
-	  [ruby-dev:38305]
-
-Mon Apr 13 17:21:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): scan coderange incrementally.
-
-Mon Apr 13 11:35:55 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): optimize previous commit.
-	  [ruby-list:45954]
-
-Mon Apr 13 10:58:54 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): check encoding compatibility only on
-	  real parts.
-
-Sun Apr 12 19:54:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (bracket, fnmatch_helper): compare bytewise first, to get
-	  rid of invalid byte sequence.  [ruby-dev:38303]
-
-Sat Apr 11 08:45:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (Makefile): phony ruby target needs empty command.
-
-Fri Apr 10 11:32:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (up): updates timestamp file.
-
-Fri Apr 10 04:54:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (Makefile): info-program needs common.mk.
-
-Fri Apr 10 03:46:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_INSTALL_NAME): use --program-transform-name.
-
-	* instruby.rb, mkconfig.rb: deal with --program-transform-name
-	  better.  now supports s, y commands and single addressing.
-
-Thu Apr  9 23:59:11 2009  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: don't override the rule for ruby.
-
-Wed Apr  8 21:58:12 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_str_dump): buffer length plus one byte for null
-	  terminator.  [ruby-dev:38294]
-
-	* test/ruby/test_m17n.rb (test_str_dump): add a test for above.
-
-Wed Apr  8 20:08:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): should not sign-expand non-ascii.
-	  [ruby-core:23158]
-
-Wed Apr  8 17:29:29 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_chop_bang): reset coderange. [ruby-core:23155]
-
-Wed Apr  8 14:00:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (what_type?): fixed typo, and refined for member of
-	  aggregation types.
-
-	* lib/mkmf.rb (Logging.postpone): copy postponed output always.
-
-Wed Apr  8 09:45:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBRUBY_SO): removed redundant additional version
-	  numbers.
-
-Tue Apr  7 13:35:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (info): shows configured names.
-
-	* configure.in (Makefile): works even if RUBY_INSTALL_NAME
-	  contains macro.
-
-	* configure.in (LIBRUBY_DLDFLAGS): compatibility version is
-	  ruby_version.
-
-	* configure.in (RUBY_REPLACE_TYPE): defines type modifier prefix
-	  for printf.
-
-Tue Apr  7 02:27:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_DEFINT): should pass includes to
-	  AC_CHECK_SIZEOF and RUBY_CHECK_SIZEOF.
-
-	* configure.in (CFLAGS, CXXFLAGS): need ARCH_FLAG for universal
-	  binary.
-
-Tue Apr  7 01:08:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_to_s): reduce fragments if no precision lost.
-	  c.f. [ruby-core:23075]
-
-Mon Apr  6 23:16:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (CFLAGS, CXXFLAGS): override with $cflags and
-	  $cxxflags if not given.  [ruby-core:23130]
-
-Mon Apr  6 19:26:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (utime_failed): refined the error message for EINVAL on
-	  DOSISH platforms, where it may fail depending on filesystems.
-	  see [ruby-dev:38277].
-
-Mon Apr  6 16:38:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (sys_fail2, rb_file_s_readlink, BUFCHECK, rmext),
-	  (rb_file_s_basename): get rid of overflow.
-
-Mon Apr  6 15:11:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (int_chr): checks overflow.
-
-Mon Apr  6 10:49:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/stringio/test_stringio.rb (test_path): StringIO#path is no
-	  longer defined.  [ruby-dev:38254]
-
-Mon Apr  6 10:47:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_path): removed.  [ruby-dev:38254]
-
-Sun Apr  5 18:02:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_fd_resize): does nothing on Win32.
-
-Sat Apr  4 17:05:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (RB_NUM_COERCE_FUNCS_NEED_OPID): macro to
-	  check compatibility.  [ruby-dev:38162]
-
-Sat Apr  4 07:38:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb (sitearch): default to arch.
-
-Fri Apr  3 14:02:42 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/irb/completion.rb (IRB::InputCompletor::Operators): Add
-	  overloadable negative operators.
-
-	* lib/irb/ruby-lex.rb (RubyLex#lex_init): Support overloadable
-	  negative operators.
-
-	* lib/irb/ruby-lex.rb (RubyLex#identify_identifier): Minus signs
-	  need to be escaped in regexp character class.
-
-	* misc/ruby-mode.el (ruby-font-lock-keywords, ruby-parse-partial):
-	  Support overloadable negative operators.
-
-Fri Apr  3 12:45:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: quotes arguments with spaces always.
-
-Thu Apr  2 14:50:06 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/getoptlong.rb: remove unused rdoc/usage from example.
-	   [ruby-core:23098]
-
-Thu Apr  2 07:42:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): updated.
-
-Wed Apr  1 20:37:49 2009  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (rb_cv_fork_with_pthread): fail if the child process
-	  fail.
-
-Wed Apr  1 19:46:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): support for parallel make.  a
-	  patch from Takuto Matsuu at [ruby-dev:38220].
-
-Wed Apr  1 19:39:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBRUBY_LDSHARED): use $(CC) instead of cc.
-	  a patch from Wataru Kimura at [ruby-dev:38225].
-
-Wed Apr  1 18:53:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_dump.c (rb_vm_bugreport): should not #include inside a
-	  function, since headers may have declarations.
-	  c.f. [ruby-core:23095]
-
-Wed Apr  1 18:44:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: ignores version numbers in config.status.  replaces
-	  all $$s in program_transform_name.
-
-Wed Apr  1 15:12:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (.c.i): use CPP instead of CC, since gcc -E can'
-	  work with multiple -arch options.
-
-Wed Apr  1 13:46:20 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_thread_fd_select): new function to call select
-	  using rb_fdset_t.
-
-	* io.c (select_internal): use rb_thread_fd_select instead of
-	  rb_thread_select.  based on the patch from Kengo Matsuyama.
-	  [ruby-dev:38221]
-
-Wed Apr  1 13:16:19 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (rb_f_sleep): RDoc disambiguation.  [ruby-talk:332632]
-
-Tue Mar 31 15:17:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: fixed the help strings for the header and library
-	  dir switches, and updated to use AS_HELP_STRING.  patches from
-	  Richard Brown, c.f. [ruby-core:23067].
-
-Mon Mar 31 08:18:57 2009  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* test/csv/test_interface.rb, test/csv/test_serialization.rb:
-	  Trying more fixes some failing tests on Windows.
-
-Mon Mar 30 19:04:25 2009  Tanaka Akira  <akr@fsij.org>
-
-	* .gdbinit (rp): show negative fixnum correctly.
-
-Mon Mar 30 12:12:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (eval_string_with_cref): replaces the message if
-	  frozen.  [ruby-dev:38208]
-
-Mon Mar 30 01:00:20 2009  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* test/csv/test_interface.rb: Trying a fix for some failing tests
-	  on Windows.
-
-Sun Mar 29 08:59:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pathname.rb (Pathname#relative_path_from): compares path
-	  components according to system default case-sensitiveness.
-	  [ruby-core:22829]
-
-Sat Mar 28 11:10:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ruby.imp): all symbols in static library need to be
-	  exported, so that encoding-extensions can be loaded.  based on a
-	  patch from Yutaka Kanemoto <kinpoco AT gmail.com> in
-	  [ruby-talk:332282].
-
-Sat Mar 28 08:49:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): checks if named argument given twice.
-
-	* sprintf.c (GETNAMEARG): remembers named arg is used, to get rid
-	  of too many arguments warning.
-
-Sat Mar 28 03:16:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (link_command, cc_command, cpp_command): should no
-	  override extout defined in extmk.rb.
-
-Fri Mar 27 12:56:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (what_type?): checks more restrictively, and
-	  supports universal binary.
-
-Fri Mar 27 01:33:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_cmp): negate the result of reverse comparison.
-
-Fri Mar 27 01:19:50 2009  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (rb_cmpint): FIX2INT may fail on LP64 platforms.
-
-Thu Mar 26 12:22:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb (String#is_binary_data?): TAB would be
-	  usually considered to be included in text data.
-
-	* lib/rdoc/parser.rb (RDoc::Parser.binary?): blksize may be nil
-	  and is irrelevant to whether a file is binary.  copied from
-	  above since TAB and newlines would be usually considered to be
-	  included in text data.
-
-Thu Mar 26 11:33:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/ri/paths.rb (RDoc::RI::Paths): considers
-	  --program-prefix and --program-suffix.  reapplied r19923.
-
-Wed Mar 25 07:45:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (target_alias): replaces cpu with universal too.
-
-	* configure.in (target): replaces cpu with arch by --with-arch.
-
-	* mkconfig.rb (TOPDIR): chops arch in config instead of
-	  RUBY_PLATFORM which varies on universal_binary.
-
-	* mkconfig.rb (MAJOR, MINOR, TEENY): reads from version.h always.
-
-Tue Mar 24 19:23:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_SIZEOF): need to include $4.
-
-Tue Mar 24 17:08:52 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* io.c (rb_io_inspect): Cannot access fptr->fd if fptr is NULL.
-	  This fixes a coredump caused by: ruby -e "class X < IO; def
-	  initialize; end; end; p X.new.inspect"
-
-Mon Mar 23 22:01:00 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_timespec): use NUM2TIMET.
-	  (time_s_at): ditto.
-
-Mon Mar 23 21:52:26 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* process.c (Init_process): Better patch for eliminating an
-	  "unused variable".
-
-Mon Mar 23 21:41:14 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/dbm/dbm.c (fdbm_initialize): Make the file variable
-	  volatile, because FilePathValue() currently does not protect the
-	  given variable from GC. (Probably it should)
-
-	* ext/sdbm/init.c (fsdbm_initialize): Ditto.
-
-Mon Mar 23 19:22:14 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* file.c (rb_file_s_lstat): Back out.
-
-Mon Mar 23 18:54:57 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* file.c (rb_file_s_stat, rb_file_s_lstat): Remove repeated type
-	  checks.
-
-Mon Mar 23 14:57:48 2009  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (init_heap): set default to heap slots length
-	  if HEAP_OBJ_LIMIT is larger than HEAP_MIN_SLOTS. [Bug #1310]
-	  (set_heaps_increment): increment next_heaps_length if
-	  next_heaps_length and heaps_used are same.
-
-Mon Mar 23 14:32:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn): use original command if not found.
-
-Mon Mar 23 06:51:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (link_so): replaces $(TARGET) with basename of the
-	  target.  [ruby-talk:330286]
-
-Sun Mar 22 14:51:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn, rb_w32_aspawn): use NULL as
-	  application name for batch files.
-
-Sat Mar 21 15:54:41 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_ssl.c (write_would_block): defined.
-	  (read_would_block): defined.
-	  (ossl_start_ssl): add nonblock argument.
-	  (ossl_ssl_connect): follow ossl_start_ssl change.
-	  (ossl_ssl_connect_nonblock): new method.
-	  (ossl_ssl_accept): follow ossl_start_ssl change.
-	  (ossl_ssl_accept_nonblock): new method.
-	  (ossl_ssl_read_internal): use write_would_block and
-	  read_would_block.
-	  (ossl_ssl_write_internal): ditto.
-
-Sat Mar 21 08:19:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_exec): prints error message only on platforms
-	  neither close-on-exec nor spawnv is supported.
-
-Sat Mar 21 08:17:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn, rb_w32_aspawn): omit program name
-	  if actual program path is found.  [ruby-core:22960]
-
-Sat Mar 21 07:25:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open): should pass program name even if multiple
-	  arguments are given.  fix for TestProcess::test_argv0.
-
-Sat Mar 21 02:37:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/lib/openssl/buffering.rb
-	  (OpenSSL::Buffering#write_nonblock): new method.
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_write_nonblock): new method.
-	  (ossl_ssl_write_internal): defined.
-	  (ossl_ssl_write): use ossl_ssl_write_internal.
-
-Fri Mar 20 18:25:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (errmap): added ERROR_MOD_NOT_FOUND.
-
-Fri Mar 20 09:22:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (libprefix): must not append "lib" after $(libdir),
-	  when load_relative is not used on darwin.  a patch from Kenta
-	  Murata at [ruby-dev:38182].
-
-Thu Mar 19 20:29:40 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_mWaitReadable): defined.
-	  (rb_mWaitWritable): defined.
-	  (io_getpartial): extend IO::WaitReadable on EWOULDBLOCK and EAGAIN.
-	  (rb_io_write_nonblock): extend IO::WaitWritable on EWOULDBLOCK and
-	  EAGAIN.
-
-	* error.c (make_errno_exc): extracted from rb_sys_fail.
-	  (rb_mod_sys_fail): new function.
-
-	* include/ruby/ruby.h (rb_mod_sys_fail): declared.
-	  (rb_mWaitReadable): declared.
-	  (rb_mWaitWritable): declared.
-
-	* ext/socket/init.c (rsock_s_recvfrom_nonblock): extend
-	  IO::WaitReadable on EWOULDBLOCK and EAGAIN.
-	  (rsock_s_accept_nonblock): extend IO::WaitReadable on EWOULDBLOCK,
-	  EAGAIN, ECONNABORTED and EPROTO.
-
-	* ext/socket/socket.c (sock_connect_nonblock): extend IO::WaitWritable
-	  on EINPROGRESS.
-
-	* ext/socket/ancdata.c (bsock_sendmsg_internal): extend
-	  IO::WaitWritable on EWOULDBLOCK and EAGAIN.
-	  (bsock_recvmsg_internal): extend IO::WaitReadable on EWOULDBLOCK and
-	  EAGAIN.
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_read_internal): raise SSLError
-	  extended by IO::WaitReadable/IO::WaitWritable on
-	  SSL_ERROR_WANT_READ/SSL_ERROR_WANT_WRITE.
-
-	* ext/openssl/ossl.c (ossl_make_error): extracted from ossl_raise.
-	  (ossl_exc_new): new function.
-
-	* ext/openssl/ossl.h (ossl_exc_new): declared.
-
-	* lib/net/protocol.rb (rbuf_fill): rescue IO::WaitReadable and
-	  IO::WaitWritable.
-
-	  [ruby-core:22539], [ruby-dev:38140]
-
-Thu Mar 19 18:49:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_SIZEOF): allows qualified name.
-
-	* configure.in (RUBY_REPLACE_TYPE): checks more strictly.
-
-	* configure.in (struct stat.st_size, struct stat.st_blocks),
-	  (struct stat.st_ino): check for size.
-
-	* lib/mkmf.rb (check_sizeof): allows qualified name.
-
-	* file.c (rb_stat_ino, rb_stat_blocks): check by size.
-
-Wed Mar 18 16:59:48 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/test_syslog.rb (TestSyslog#test_open): check
-	  param after block again. because detect not to call block.
-
-Wed Mar 18 16:54:04 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* ext/socket/ancdata.c: not use pktinfo.ipi_spec_dst if not defined
-	* ext/socket/extconf.rb: define HAVE_IPI_SPEC_DST
-
-Wed Mar 18 16:38:11 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/test_syslog.rb (TestSyslog#test_open): check
-	  block parameter in block. [ruby-dev:38180]
-
-Wed Mar 18 12:48:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (report_bug): rb_bug can be caused by extension
-	  libraries.
-
-Wed Mar 18 02:41:33 2009  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (open_server_inaddr_any): fixed multiple network
-	  families problem. a patch from Charl Matthee at [ruby-core:21033].
-
-Tue Mar 17 21:42:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (package): creates .revision.time and passes
-	  CHDIR to create prerequisite files.
-
-Tue Mar 17 18:00:55 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (Enumerator#{each_,}{with_index,with_object}): Fix
-	  a bug where any parameter but the first one is dropped even if
-	  multiple values are yielded with. [Bug #1198]
-
-Tue Mar 17 14:25:16 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb (Pathname#sub): set $~ in block.binding.
-	  [ruby-dev:38173]
-
-Tue Mar 17 13:48:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): added RUBY_COREDLL.
-
-	* ext/dl/handle.c (rb_dlhandle_initialize): returns msvcrt if libc
-	  or RUBY_COREDLL is given.  [ruby-core:22828]
-
-Tue Mar 17 10:29:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c, dln.c, parse.y, re.c, ruby.c, sprintf.c, strftime.c,
-	  string.c, util.c, variable.c: use strlcpy, memcpy and snprintf
-	  instead of strcpy, strncpy and sprintf.
-
-Mon Mar 16 17:15:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/dl/test_win32.rb (Win32API): enclosed by DL::TestWin32.
-	  [ruby-core:22827]
-
-Mon Mar 16 16:37:22 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/tcltklib.c (eventloop_sleep, lib_eventloop_core),
-	  (lib_watchdog_core): tv_usec is not time_t.
-
-Mon Mar 16 12:30:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (REVISION_H): keeps timestamp of revision.h.
-	  [ruby-core:22900]
-
-	* tool/ifchange, win32/ifchange.bat: extended --timestamp option.
-
-Mon Mar 16 09:28:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, common.mk, win32/Makefile.sub: added preprocessing rules.
-
-Sun Mar 15 12:34:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/minitest/test_mini_test.rb: fixed tests depending on the
-	  detail of floating point representation.
-
-Sun Mar 15 12:01:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems/installer.rb (Gem::Installer#shebang): fix for env
-	  shebang.
-
-Sun Mar 15 11:15:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h ({RSTRING,RBIGNUM}_EMBED_LEN_MAX): made int.
-
-	* include/ruby/ruby.h (OBJ_{TAINTED,UNTRUSTED,FROZEN}): return int.
-
-	* include/ruby/encoding.h (ENC_CODERANGE): ditto.
-
-Sun Mar 15 11:11:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_hash_uint, rb_hash_start, rb_hash_end): use VALUE
-	  rather than unsigned int.
-
-Sun Mar 15 11:00:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file_internal): stop the timer thread before exec.
-
-Sun Mar 15 09:17:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (.y.c): use SRC_FILE which contains slashes instead of
-	  backslashes.  [ruby-core:22891]
-
-Sun Mar 15 08:26:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (srcs-ext): creates ext/dl/callback/callback.c also.
-
-Sun Mar 15 03:29:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (SAVED_GROUP_ID, p_gid_switch): should be rb_gid_t.
-
-Sun Mar 15 02:53:13 2009  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_subpat): accept capture name.
-	  (rb_str_aref): follow above change.
-	  (rb_str_aref_m): pass the 2nd argument to rb_str_subpat.
-	  (rb_str_subpat_set): accept capture name.
-	  (rb_str_aset): follow above change.
-	  (rb_str_partition): ditto.
-	  (rb_str_aset_m): pass the 2nd argument to rb_str_subpat_set.
-
-	* include/ruby/intern.h (rb_reg_backref_number): declared.
-
-	* re.c (rb_reg_backref_number): defined.
-
-	  [ruby-core:21057]
-
-Sun Mar 15 02:09:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (bmcall): should not uninitialized variable.  a patch from
-	  pegacorn at [ruby-dev:38169].
-
-Sat Mar 14 18:25:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_scan_oct, ruby_scan_hex): use size_t.
-
-Sat Mar 14 18:18:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_proc_call, rb_node_arity, bmcall, curry): checks
-	  overflow.
-
-	* proc.c (rb_proc_parameters): unnamed_parameters() expects in
-	  not VALUE.
-
-Sat Mar 14 17:54:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_each_words): assume no string exceeds INT_MAX.
-
-Sat Mar 14 15:59:04 2009  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rb_spawn_internal): use int variable for status.
-
-Sat Mar 14 14:45:51 2009  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rb_f_system): use rb_pid_t for pid.
-	  (rb_spawn_internal): local variable renamed.
-
-Sat Mar 14 14:16:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_strdup, Balloc, rv_alloc): use size_t.
-
-Sat Mar 14 13:53:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_qsort): the result of cmp must be signed, so ge
-	  rid of reuse of a variable.
-
-Sat Mar 14 10:56:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (init_funcname_len, dln_find_exe_r, dln_find_file_r): use
-	  size_t.
-
-	* file.c (rb_stat_inspect, file_expand_path): ditto.
-
-	* util.c (ruby_qsort): ditto.
-
-Sat Mar 14 10:39:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (CXX_EXT): checks for case-sensitive filesystem with
-	  FNM_SYSCASE rather than build_os.
-
-Fri Mar 13 23:03:40 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/init.c (wait_connectable0): remove unreachable code.
-
-Fri Mar 13 23:00:02 2009  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (RUBY_CHECK_SIZEOF): pass [include] to AC_CHECK_SIZEOF.
-
-Fri Mar 13 20:58:11 2009  Tanaka Akira  <akr@fsij.org>
-
-	* dln.c (dln_find_1): compare fspace in size_t world.
-
-Fri Mar 13 18:58:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (CFLAGS, CXXFLAGS): moved after warnflags.
-
-Fri Mar 13 18:10:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (rb_throw_obj): inverted call flow.  [ruby-core:22872]
-
-Fri Mar 13 17:04:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (bool): not define to get rid of conflict
-	  against curses.
-
-Fri Mar 13 16:45:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/openssl_missing.h (i2d_of_void): cast for callbacks.
-	  [ruby-core:22860]
-
-	* ext/openssl/ossl_engine.c (ossl_engine_s_by_id): suppress a
-	  warning.
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_flush_sessions): time_t may
-	  be larger than long.
-
-	* ext/openssl/ossl_ssl_session.c (ossl_ssl_session_get_time),
-	  (ossl_ssl_session_get_timeout): use TIMET2NUM() to convert
-	  time_t.
-
-Fri Mar 13 15:10:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_set_value): should use
-	  OPENSSL_free instead of free.  a patch from Charlie Savage at
-	  [ruby-core:22858].
-
-Fri Mar 13 21:11:51 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/sdbm/_sdbm.c: should include "ruby/defines.h" as well for
-	  prototypes of compatibility functions on Win32 platform.
-	  [ruby-core:22870]
-
-Fri Mar 13 10:42:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (AC_HEADER_STDBOOL): added.
-
-	* include/ruby/ruby.h (NUM2INT, rb_special_const_p): returns true
-	  and false instead of Qtrue and Qfalse for platforms where VALUE
-	  is bigger than int.
-
-	* gc.c (gc_stress_set), ext/openssl/ossl_asn1.c (decode_bool): go
-	  rid of variables named `bool'.
-
-Fri Mar 13 10:16:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (struct stat.st_size): may be huge.
-
-Fri Mar 13 09:30:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (bigfixize): zero length Bignum is 0.
-
-Fri Mar 13 09:17:12 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils#fu_get_gid): stringify group
-	  argument before making regexp match.  [ruby-dev:38155]
-
-Fri Mar 13 08:06:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (rv_strdup): macro to duplicate nul-terminated string.
-	  [ruby-core:22852]
-
-Thu Mar 12 22:41:41 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl: suppress warnings.
-
-	* ext/openssl/ossl.h (OSSL_Debug): don't use gcc extension for
-	  variadic macro.
-
-Thu Mar 12 22:29:36 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (WARNFLAGS): warning 4996 is only in VC++8 or
-	  later.
-
-Thu Mar 12 22:14:01 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_def_const): use INT2NUM because
-	  OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG doesn't fit into Fixnum.
-
-Thu Mar 12 18:16:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c, bignum.c, dln.c, error.c, gc.c, io.c, marshal.c,
-	  numeric.c, pack.c, strftime.c, string.c, thread.c, transcode.c,
-	  transcode_data.h, util.c, variable.c, vm_dump.c,
-	  include/ruby/encoding.h, missing/crypt.c, missing/vsnprintf.c:
-	  suppress VC type warnings.  [ruby-core:22726]
-
-	* marshal.c (div0), numeric.c (infinite_value): new functions to
-	  get rid of VC division by 0 warnings.
-
-	* st.c: use st_index_t for indexes instead of int.
-
-	* vm.c (rb_vm_get_sourceline), vm_insnhelper.c (vm_throw): use
-	  rb_num_t.
-
-Thu Mar 12 09:30:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_SIZEOF): if same size type is found, no
-	  more calculation is needed.
-
-	* configure.in (RUBY_DEFINT): falls back to RUBY_CHECK_SIZEOF if
-	  size is not immediate.
-
-Thu Mar 12 09:24:24 2009  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h: suppress warnings of overflow.
-
-Thu Mar 12 09:15:14 2009  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h: suppress warnings of overflow.
-
-Thu Mar 12 05:49:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (warnflags): added some default flags,
-	  pointer-arith, write-strings and shorten-64-to-32, but suppress
-	  unused-parameter and missing-field-initializers, if possible.
-
-	* configure.in (RUBY_CHECK_HUGE): checks whether a value range is
-	  larger than long.
-
-	* file.c (rb_stat_blocks): struct stat.st_blocks may be larger
-	  than long.
-
-	* io.c (copy_stream_fallback_body): off_t may be larger than long.
-
-	* iseq.c (rb_iseq_disasm): RSTRING_LEN() returns long.
-
-	* process.c (rb_f_sleep): time() needs time_t.
-
-	* random.c (fill_random_seed): enclosed conditionally used
-	  variables.
-
-	* thread_pthread.c (ruby_init_stack): range of rlim_cur may be
-	  larger than int.
-
-	* missing/vsnprintf.c (BSD_vfprintf): commented out code which has
-	  no effect at all.
-
-Thu Mar 12 02:10:57 2009  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: strip spaces from ruby_version.
-	  Sun C 5.9 SunOS_i386 Build47_dlight 2007/05/22 generates
-	  `ruby_version= 1 "." 9 "." 1'.
-
-Thu Mar 12 01:18:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_seek): use long for seekdir().
-
-Thu Mar 12 01:08:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/ytab.sed: replaces backslashes with slash for nmake.
-
-Wed Mar 11 21:23:06 2009  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_mload): don't clear tm_mday.
-
-Wed Mar 11 20:13:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/handle.c (rb_dlhandle_sym): RTLD_NEXT is not for symbol
-	  name.   [ruby-dev:38150]
-
-Wed Mar 11 17:26:38 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/win32/lib/Win32API.rb: call by :stdcall as default.
-	  [ruby-core:22826]
-
-Wed Mar 11 13:27:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stack_type): uses VALUE which is able to be stored
-	  parser stack.
-
-Wed Mar 11 13:22:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (init_env): set TMPDIR if none of TMPDIR, TMP,
-	  TEMP is set.
-
-	* win32/win32.c (rb_w32_telldir, rb_w32_seekdir): should use long,
-	  as defined by SUSv3.
-
-Wed Mar 11 13:03:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/handle.c (rb_dlhandle_sym): fixed heap corruption.
-	  [ruby-core:22822]
-
-Wed Mar 11 06:12:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_loadpath_safe): expands libpath and removes
-	  last /lib.
-
-Wed Mar 11 04:47:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_to_i, time_hash): time_t may be bigger than long
-	  and int.
-
-	* time.c (time_timeval, rb_time_timeval, obj2nsec, time_strftime),
-	  (time_mdump, time_mload): suppress warnings.
-
-	* win32/Makefile.sub (config.h): added TIMET2NUM and NUM2TIMET.
-
-Wed Mar 11 04:29:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c: suppress warnings.  based on a patch from Charlie
-	  Savage at [ruby-core:22804].
-
-Wed Mar 11 04:22:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (sig_trap): suppress warnings.
-
-Tue Mar 10 20:07:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (WARNFLAGS): uses -wd4996 instead of
-	  CRTDEFFLAGS.  cf. [ruby-core:22725]
-
-Tue Mar 10 19:58:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h (strcasecmp, strncasecmp): use _ prefixed
-	  versions to suppress warnings.
-
-	* ext/dl/callback/mkcallback.rb (DLTYPE[FLOAT]): cast to suppress
-	  warnings.  [ruby-core:22792]
-
-	* array.c, bignum.c, gc.c, numeric.c, string.c, util.c, insns.def,
-	  missing/crypt.c, missing/vsnprintf.c, : suppress warnings.
-	  [ruby-core:22792]
-
-Tue Mar 10 13:45:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (LDFLAGS): moved -link to TRY_LINK, LINK_SO
-	  and so on.  based on a patch by Charlie Savage at
-	  [ruby-core:22794]
-
-	* win32/Makefile.sub (config.h): passes LDFLAGS to rbconfig.rb so
-	  that extconf.rb could refer it.  [ruby-core:22725]
-
-Tue Mar 10 11:36:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (prepare_iseq_build): too few arguments to function
-	  rb_ary_tmp_new().
-
-Tue Mar 10 10:53:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (rb_iseq_compile_with_option): argument may be converted.
-
-Tue Mar 10 04:56:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MINIRUBY): keep macro into Makefile.
-
-	* configure.in (RUBY_CHECK_SIZEOF): fix for fallback.
-
-	* configure.in (MANGLED_PATH): defines for RUBYLIB_PREFIX.
-
-	* ruby.c (ruby_init_loadpath_safe): uses string as buffer.
-
-	* symbian/setup (config_h): defines MANGLED_PATH.
-
-Tue Mar 10 03:48:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/callback/depend: fix for parallel build.
-
-	* ext/dl/callback/extconf.rb: callback.h is no longer created.
-
-	* ext/dl/callback/mkcallback.rb: creates main source first.
-
-	* ext/dl/callback/extconf.rb ($distcleanfiles): added callback.c.
-
-Tue Mar 10 00:06:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (load_relative): new option to enable load path
-	  relative to libruby_so.
-
-	* ruby.c (ruby_init_loadpath_safe): added the case using dladdr().
-
-Mon Mar  9 16:49:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake: updated to rake code to rake-0.8.4 source code base.
-
-Mon Mar  9 16:03:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems/installer.rb (Gem::Installer#initialize): env may
-	  not be under /usr/bin.
-
-	* lib/rubygems/installer.rb (Gem::Installer#shebang): uses /bin/sh
-	  if shebang has any options, since env shebang trick does no
-	  work with options.
-
-Mon Mar  9 15:19:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (manpages): use basename to compare and for Tempfile.
-
-Mon Mar  9 14:55:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (default gems): installs default gemspecs.
-
-Mon Mar  9 14:48:08 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (OPTFLAGS): simplified. see [ruby-core:22725]
-
-Mon Mar  9 14:33:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb: prints names of the directories where files are
-	  installed to.
-
-Mon Mar  9 02:25:54 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_proc.rb: add some tests.
-
-Mon Mar  9 01:38:00 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_enum.rb: add some tests.
-
-Mon Mar  9 01:12:37 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_object.rb: add a test for Object#method_missing.
-
-Mon Mar  9 01:11:17 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_file_exhaustive.rb: add tests for File#size and
-	  File.absolute_path.
-
-Sun Mar  8 23:02:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (LDFLAGS): always prepends -link.
-
-Sun Mar  8 11:39:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_SIZEOF): dirty hack to compute multiple
-	  sizeof, for apple's universal binary.
-
-Sat Mar  7 22:06:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (universal_binary): checks if sizes are same on all
-	  architectures.
-
-Sat Mar  7 18:45:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: checks if cd really succeeded.
-
-Sat Mar  7 14:24:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: don't use CONFIG_SHELL for testing shell feature in
-	  Makefile.
-
-Sat Mar  7 14:07:31 2009  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: fix the location of cdcmd.
-
-Sat Mar  7 13:52:01 2009  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: the shell which runs configure may be different from
-	  the shell for make.  configure likes bash but Makefile specifies
-	  SHELL=/bin/sh.
-
-Sat Mar  7 12:31:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/erb/test_erb.rb: reverted space sensitive test results.
-
-	* test/rdoc/test_rdoc_parser_c.rb: ditto.
-
-	* test/rdoc/test_rdoc_ri_default_display.rb: ditto.
-
-Fri Mar  6 23:35:59 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/securerandom.rb (SecureRandom.urlsafe_base64): add optional
-	  argument to add padding.
-
-Fri Mar  6 19:25:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_LIB_VERSION_STYLE): sets full or minor style
-	  not to show RUBY_VERSION_MAJOR and so on.
-
-	* version.h (RUBY_LIB_VERSION): makes from RUBY_LIB_VERSION_STYLE.
-
-	* configure.in, Makefile.in, win32/Makefile.sub (CHDIR): cd using
-	  physical directory.
-
-	* Makefile.in (update-mspec): split from update-rubyspec.
-
-	* win32/Makefile.sub (update-{rubyspec,mspec}): added.
-
-Fri Mar  6 14:28:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, win32/Makefile.sub (INSNS): moved variable
-	  definition before rule.
-
-Fri Mar  6 13:47:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake/loaders/makefile.rb (Rake::MakefileLoader#load): deals with
-	  escaped spaces.  incorporated from rake 0.8.4.
-
-	* lib/rake/testtask.rb (Rake::TestTask#define): passes each libs
-	  as each arguments with expanded.  incorporated from rake 0.8.4.
-
-Thu Mar  5 18:36:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_to_s): keeps enough precision for round trip.
-	  [ruby-core:22325]
-
-Thu Mar  5 17:42:06 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_fill): doc for Array#fill misses indication
-	  about negative value for the start argument.  [ruby-core:22497]
-
-Thu Mar  5 16:56:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tmpdir.rb (Dir.tmpdir): not use USERPROFILE, and ignores
-	  non-existent directory.
-
-Thu Mar  5 14:52:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_sysinit): initializes version info first.
-
-	* win32/win32.c (rb_w32_osid): always define for binary compatibility.
-
-Thu Mar  5 11:52:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (make_insns_rules): rule to make rules for insns.
-
-Thu Mar  5 11:27:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (miniruby.exe): workaround for a failure of
-	  mt.exe on Windows 7 beta.  [ruby-talk:330284]
-
-Thu Mar  5 10:32:17 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/dl/test_base.rb: Add dragonfly to libc and libm switch.
-
-Thu Mar  5 10:29:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_eql): extracted from rb_str_equal and rb_str_eql.
-
-	* string.c (rb_str_chomp_bang): keeps 7bit coderange.
-
-Thu Mar  5 10:10:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (enc_initialized_p): ENC_UNINITIALIZED
-	  is not defined already.
-
-	* include/ruby/encoding.h (ENC_FROM_ENCINDEX): removed because
-	  depending on a static variable.
-
-Thu Mar  5 04:42:52 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: fix wrong test, and add a test for
-	  sort_by!.
-
-Thu Mar  5 04:32:38 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: add some tests for coverage.
-
-Thu Mar  5 00:06:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/README.win32 (Requirement): added unicows.lib and dll.
-
-Wed Mar  4 23:29:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, win32/configure.bat (--enable-win95): new option
-	  to enable/disable win95 support.
-
-Wed Mar  4 21:21:51 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/thread.rb (SizedQueue#push): fix limit condition.
-	  [ruby-dev:38135]
-
-Wed Mar  4 20:27:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (mingw): checks if unicows.lib is available.
-
-	* include/ruby/win32.h (WIN95): moved to config.h
-
-	* win32/Makefile.sub (LIBS): links unicows.lib if available.
-
-	* win32/Makefile.sub (config.h): defines WIN95 only if unicows.lib
-	  is available.
-
-	* win32/setup.mak (-unicows-): checks if unicows.lib is available.
-
-Tue Mar  3 17:10:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): removes object files no longer used and
-	  files to be removed by old distclean.
-
-Tue Mar  3 16:51:51 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/win32/lib/win32/resolv.rb: get rid of warning.
-
-	* ext/dl/lib/dl/func.rb: ditto.
-
-Tue Mar  3 16:25:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake), lib/mkmf.rb (create_makefile): $objs and
-	  $srcs are always Array or nil now.
-
-Tue Mar  3 15:54:11 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/win32/lib/win32/{registry,resolv}.rb: use dl/import instead
-	  of Win32API.
-
-Tue Mar  3 15:53:20 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/lib/dl/func.rb (DL::Function.name): delegate to @cfunc.
-
-Tue Mar  3 15:40:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/dl.c (rb_dl_init_callbacks): autoloads callbacks.
-
-	* ext/dl/callback: split from dl.
-
-	* ext/dl/lib/dl/cparser.rb (DL::CParser::parse_signature): fixed
-	  variable name.
-
-	* ext/dl/lib/dl/pack.rb (DL::PackInfo): reduced redundant
-	  initialization.
-
-	* ext/dl/lib/dl/stack.rb (DL::Stack): ditto.
-
-	* ext/dl/lib/dl/value.rb (DL::ValueUtil#wrap_arg): NULL for nil.
-
-	* test/dl: moved from ext/dl/test.
-
-Tue Mar  3 14:57:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (main): passes $(MAKE) to mkmain_cmd
-
-	* ext/extmk.rb (command_output): uses arguments to invoke make.
-
-Tue Mar  3 01:56:03 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/securerandom.rb (SecureRandom.urlsafe_base64): delete padding.
-
-Mon Mar  2 21:39:08 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/sockport.h (SS_LEN): defined unconditionally.
-
-Mon Mar  2 21:26:42 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (anc_inspect_socket_creds): suppress warnings.
-
-Mon Mar  2 21:13:42 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (rsock_discard_cmsg_resource): defined
-	  unconditionally.
-
-Mon Mar  2 21:06:40 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_mload): don't use "sun" variable
-	  for Solaris.
-
-Mon Mar  2 21:01:36 2009  Tanaka Akira  <akr@fsij.org>
-
-	* file.c: include fcntl.h for O_RDONLY on Solaris.
-
-Mon Mar  2 19:43:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/uri/common.rb (URI::Parser#escape): escaped string is ascii
-	  only.
-
-	* lib/uri/common.rb (URI::Parser#unescape): converts bytewise.
-	  [ruby-dev:38005], [ruby-dev:38110]
-
-Mon Mar  2 16:40:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja (Macros): added HAVE_RUBY_*_H.
-
-Mon Mar  2 12:22:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (init_env): keeps wide chars as wide chars.
-
-Mon Mar  2 11:01:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/dl.h (dlerror): fixed on Windows.
-
-	* ext/dl/handle.c (rb_dlhandle_initialize): returns handle to
-	  libruby if nil is given on Windows as dlopen.
-
-	* ext/dl/handle.c (rb_dlhandle_sym): get rid of buffer overrun,
-	  and try ASCII WINAPI versions too.
-
-Mon Mar  2 10:29:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_longjmp), include/ruby/intern.h (ruby_cleanup): fixed
-	  prototypes.
-
-Mon Mar  2 00:56:45 2009  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/observer.rb: The module observable uses now a hash to
-	  store listeners. merged a patch from Alessandro Di Maria in
-	  [ruby-core:22560].
-
-Sun Mar  1 22:59:41 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c: suppress warnings.
-
-	* ext/socket/socket.c: ditto.
-
-	* ext/socket/unixsocket.c: ditto.
-
-Sun Mar  1 20:57:41 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ (rsock_getfamily): renamed from rb_sock_getfamily.
-
-Sun Mar  1 19:52:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/win32/lib/Win32API.rb (initialize): passes res
-	  arguments to DL.
-
-Sun Mar  1 19:38:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (zstream_run): suppress a warning.  a patch from
-	  Charlie Savage at [ruby-core:22607].
-
-Sun Mar  1 19:36:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_dtoa): allocates one more byte to get rid of buffer
-	  overrun.  a patch from Charlie Savage at [ruby-core:22604].
-
-Sun Mar  1 19:10:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (.y.c): removed extra backslash.  [ruby-core:22602]
-
-Sun Mar  1 19:02:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_call): fix for stdcall and missing
-	  argument numbers.  [ruby-core:22601]
-
-	* ext/dl/dl.h (DLSTACK_PROTO0_): added.
-
-	* ext/dl/mkcallback.rb (gencallback, gen_callback_file),
-	  (rb_dl_init_callbacks): omit stdcall functions unless supported.
-
-	* lib/rubygems/config_file.rb (SHGetFolderPath): stdcall.
-
-Sun Mar  1 17:27:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (gfDebug): uncommented out.
-	  [ruby-core:22600]
-
-Sun Mar  1 16:15:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_waitpid): use wait_each() on no waitpid platforms.
-	  [ruby-dev:38054]
-
-Sun Mar  1 16:01:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (proc_daemon): stops and restarts timer thread because
-	  daemon(3) implies fork(2).  [ruby-dev:38055]
-
-Sun Mar  1 15:45:49 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ (rsock_make_hostent): renamed from sock_make_hostent.
-	  (rsock_addrinfo): renamed from sock_addrinfo.
-	  (rsock_getaddrinfo): renamed from sock_getaddrinfo.
-	  (rsock_socket): renamed from ruby_socket.
-	  (rsock_sock_s_socketpair): renamed from sock_s_socketpair.
-	  (rsock_connect): renamed from ruby_connect.
-
-	* ext/socket/socket.c (sock_listen): make it static.
-
-Sun Mar  1 15:29:31 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket: add rsock_ prefix.
-
-Sat Feb 28 21:52:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* vm_eval.c (rb_iterate): use volatile to suppress warnings.
-
-	* eval.c (ruby_cleanup): ditto.
-
-Sat Feb 28 20:09:40 2009  Tanaka Akira  <akr@fsij.org>
-
-	* eval_error.c (error_print): use volatile to suppress warnings.
-
-	* vm_eval.c (eval_string_with_cref): ditto.
-
-	* thread.c (rb_exec_recursive): ditto.
-
-	* eval_jump.c (rb_exec_end_proc): ditto.
-
-	* eval.c (ruby_exec_node): ditto.
-	  (rb_longjmp): ditto.
-
-Sat Feb 28 18:28:58 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_unix_rights): check message type.
-
-Sat Feb 28 16:18:39 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/net/http.rb: suppress warnings of non-existing instance variable
-	  access for SSL.
-
-Sat Feb 28 14:50:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (BasicSocket#connect_address): returns ::1
-	  if the address is IPv4-mapped IPv6 address for 0.0.0.0 for MacOS X.
-
-Sat Feb 28 00:18:40 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c: suppress strict-aliasing warning with
-	  gcc version 4.4.0 20090219 (Red Hat 4.4.0-0.21) on Fedora 11 Alpha.
-
-	* ext/socket/socket.c: ditto.
-
-	* ext/socket/unixsocket.c: ditto.
-
-	* ext/socket/sockport.h (SS_LEN): defined.
-	  (SET_SS_LEN): ditto.
-
-Fri Feb 27 22:30:18 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): close FDs passed by
-	  SCM_RIGHTS unless :scm_rights=>true is given.
-	  (discard_cmsg): extracted from rsock_discard_cmsg_resource.
-
-Fri Feb 27 22:14:22 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/lib/openssl/buffering.rb: define Buffering module under
-	  OpenSSL.  [ruby-dev:37906]
-
-Fri Feb 27 22:09:24 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb: don't define assert_not_* if already
-	  overridden.
-
-Fri Feb 27 22:02:34 2009  Tanaka Akira  <akr@fsij.org>
-
-	* util.c: fix SEGV by test_time.rb with
-	  gcc version 4.4.0 20090219 (Red Hat 4.4.0-0.21) on Fedora 11 Alpha.
-
-Fri Feb 27 18:30:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (cdhash_type, iseq_set_sequence): should not call
-	  methods of the argument of case, to keep the semantics of
-	  case/when.  [ruby-dev:38079]
-
-Fri Feb 27 18:01:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (ruby_get_stack_grow_direction): no needs to use thread
-	  here, and not initialized yet.  [ruby-core:22439]
-
-Fri Feb 27 17:45:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_load_ok): checks if regular file, except for the
-	  platform disallows to open directories, e.g. dosish.
-	  [ruby-dev:38097], [Bug #1221]
-
-Fri Feb 27 14:39:40 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (flo_eq, flo_gt, flo_ge, flo_lt, flo_le, flo_eql): revert
-	  isnan() checks for VC++6.
-
-	* insns.def (opt_lt, opt_gt): ditto.
-
-Fri Feb 27 14:23:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/ostruct.rb (modifiable): check if really frozen.
-	  [ruby-core:22559]
-
-Thu Feb 26 23:14:46 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (BasicSocket#connect_address): new method.
-
-Thu Feb 26 19:29:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (hash_foreach_iter): fix for prototype.
-
-Thu Feb 26 18:36:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (INSNS, newline.c, miniprelude.c, prelude.c),
-	  (node_name.inc, known_errors.inc): unified from Makefile.in and
-	  win32/Makefile.sub.
-
-Thu Feb 26 13:30:34 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* util.c (valid_filename): use our own implementation of open(),
-	  close() and unlink().
-
-Thu Feb 26 13:23:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (cdhash_each): resurrects internal literals.
-
-Thu Feb 26 10:56:48 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h (rb_w32_wopen): prototype forgotten.
-
-	* io.c (rb_sysopen_internal): shouldn't replace undefined chars in this
-	  case.
-
-Thu Feb 26 01:34:38 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: more MSG_* constants.
-
-Thu Feb 26 00:21:21 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (sockopt_level): extracted from sockopt_level_m.
-	  (sockopt_optname): extracted from sockopt_optname_m.
-	  (sockopt_data): apply StringValue.
-	  (sockopt_s_linger): new method.
-	  (sockopt_linger): new method.
-	  (inspect_linger): show onoff value if it is neither 0 nor 1.
-
-Wed Feb 25 23:23:03 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_unix_rights): raise
-	  NotImplementedError if no fd passing feature.
-	  (ancillary_timestamp): raise NotImplementedError if no timestamp
-	  feature.
-
-Wed Feb 25 23:18:53 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_s_unix_rights): new method.
-
-Wed Feb 25 23:01:26 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/unixsocket.c (unix_recv_io): prevent FD leak when 2 fd is
-	  sent on LP64 platform.
-
-	* ext/socket/rubysocket.h (rsock_discard_cmsg_resource): declared.
-
-	* ext/socket/ancdata.c (rsock_discard_cmsg_resource): renamed from
-	  discard_cmsg_resource.  export it.
-
-Wed Feb 25 17:31:32 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (sysopen_func, rb_sysopen_internal, rb_sysopen): open file
-	  by UTF-16'ed filename on Windows.
-
-	* io.c (rb_file_open_generic, rb_io_s_sysopen, rb_io_reopen,
-	  argf_next_argv): follow above change.
-
-	* io.c (rb_scan_open_args): no longer need to convert filepath here on
-	  Windows.
-
-	* win32/wio32.c (rb_w32_wopen): new function to open file by UTF-16'ed
-	  filename.
-
-	* win32/win32.c (rb_w32_open): call rb_w32_open().
-
-Wed Feb 25 15:05:35 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): use un.rb as cp instead of
-	  cmd.exe's copy command.
-
-	* lib/mkmf.rb (create_makefile): no longer need to convert path
-	  separator when copying file.
-
-Wed Feb 25 12:27:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_force_encoding): should clear coderange at changing
-	  encoding.  [ruby-core:22437]
-
-Wed Feb 25 12:06:09 2009    <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getline_1): enables limit even if rs is given.
-	  [ruby-core:22434]
-
-Wed Feb 25 02:28:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_chomp_bang): coderange may change.
-	  [ruby-core:22414]
-
-Wed Feb 25 02:17:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_delete_bang): should recalculate coderange.
-	  [ruby-talk:329267]
-
-Wed Feb 25 00:41:21 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* class.c (rb_scan_args): Allow specifying the number of trailing
-	  mandatory arguments right after the number of optional arguments
-	  only if the number of leading mandatory arguments is not omitted.
-
-	* ext/socket/tcpserver.c (tcp_svr_init): Make use of it.
-
-Wed Feb 25 00:28:25 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_size): new method added.  [ruby-core:22088]
-
-Wed Feb 25 00:15:15 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c (curses_colors): new method added.  a patch
-	  from Alexander Beisig in [ruby-core:22331].
-
-	* ext/curses/curses.c (curses_color_pairs): ditto.
-
-Wed Feb 25 00:05:13 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* class.c (rb_scan_args): Revamp rb_scan_args() to compute the
-	  number of required and optional arguments precisely to prepare
-	  for a more informative error message.
-
-Tue Feb 24 23:58:52 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_index, rb_ary_rindex): Emit a warning that a
-	  given block is unused when an argument is specified.
-
-Tue Feb 24 22:00:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sockaddr_obj): convert fe80:1::1 to fe80::1%1.
-
-Tue Feb 24 19:56:11 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_timestamp): support SCM_BINTIME.
-
-Tue Feb 24 19:45:15 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_timestamp): new method.
-
-Tue Feb 24 19:01:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (main): split from exts and makes main program after
-	  building exts with miniruby, to get rid of overwriting running
-	  program.  [ruby-core:22339]
-
-	* Makefile.in, win32/Makefile.sub (RUNCMD, MKMAIN_CMD): macros to
-	  run script file.
-
-	* ext/extmk.rb (parse_args): added --command-output option which
-	  creates script file to make main program.
-
-Tue Feb 24 17:58:07 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ripper.c): exec can't work on Windows.
-
-	* ext/ripper/depend (.SUFFIXES): nmake doesn't have .y by default.
-
-	* Makefile.in (id.h): overwrites unconditionally.
-
-Tue Feb 24 13:13:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD_vfprintf): ptrdiff_t may be larger than
-	  long.
-
-Tue Feb 24 11:21:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (rb_disable_interrupt, rb_enable_interrupt): see
-	  USE_TRAP_MASK.
-
-Tue Feb 24 10:49:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_waitpid): last argument was missing.
-
-	* process.c (waitall_each): fixed typo.  a patch from shinichiro.h
-	  <shinichiro.hamaji AT gmail.com> at [ruby-dev:38054].
-
-Tue Feb 24 01:53:40 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flo_eq): remove unnecessary NaN check using isnan().
-	  comparison regarding NaN is false anyway.
-
-	* numeric.c (flo_gt, flo_ge, flo_lt, flo_le, flo_eql): ditto.
-
-Tue Feb 24 01:22:19 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bootstraptest/test_thread.rb: fix for environment where fork is not
-	  available.
-
-Tue Feb 24 01:19:38 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (thread_cleanup_func): unlock all locked mutexes even when
-	  forking.  [ruby-core:22269]
-
-Tue Feb 24 00:54:16 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (opt_minus): inline float operation.
-
-	* insns.def (opt_lt, opt_gt): ditto.
-
-Tue Feb 24 00:24:13 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_each): check #succ only when it is really
-	  needed.  small performance improvement.
-
-	* math.c (Need_Float): call rb_to_float() only when it is really
-	  needed.  small performance improvement.
-
-Tue Feb 24 00:19:33 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/pathname.rb (Pathname#foreachline): removed wrongly
-	  resurrected method.  [ruby-dev:38065]
-
-Mon Feb 23 20:39:21 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (inspect_timespec_as_abstime): new function to
-	  show struct timespec.
-	  (ancillary_inspect): use it for SCM_TIMESTAMPNS on GNU/Linux.
-
-Mon Feb 23 20:30:06 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (inspect_bintime_as_abstime): new function to
-	  show struct bintime.
-	  (ancillary_inspect): use it for SCM_BINTIME on FreeBSD.
-
-	* ext/socket/mkconstants.rb: define SCM_BINTIME.
-
-Mon Feb 23 20:18:49 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (inspect_timeval_as_abstime): use time_t
-	  variable to avoid a warning on environments which use long as
-	  tv_sec as NetBSD.
-
-Mon Feb 23 15:53:30 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_index, rb_ary_rindex): We know that argc is not
-	  zero when we reach here.
-
-	* array.c (rb_ary_initialize, rb_ary_index): Shrink a double
-	  space. (NFC)
-
-Mon Feb 23 14:47:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (mv): added description for the case of
-	  different partitions.  [ruby-talk:329072]
-
-Mon Feb 23 10:19:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (USE_SYMBOL_AS_METHOD_NAME): Module#methods,
-	  #singleton_methods and so on return Symbols.  [ruby-talk:328775]
-
-Mon Feb 23 10:15:35 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja: added macros for the Compatibilities.
-
-Mon Feb 23 03:19:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: define SO_TIMESTAMPNS and SCM_TIMESTAMPNS
-	  if available.
-
-Mon Feb 23 02:54:31 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_inspect): use SCM_TIMESTAMP instead
-	  of SO_TIMESTAMP.  SCM_TIMESTAMP != SO_TIMESTAMP on MacOS X.
-
-Mon Feb 23 02:44:42 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (inspect_timeval_as_abstime): new function.
-	  (ancillary_inspect): use it for SO_TIMESTAMP.
-
-Mon Feb 23 02:26:44 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_timeval_as_interval): renamed from
-	  inspect_timeval.
-
-Mon Feb 23 02:10:09 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_timeval): fix the size test.
-
-Sun Feb 22 22:42:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_trans): should recalculate coderange.
-	  [ruby-core:22326] (reopened at [ruby-core:22328])
-
-Sun Feb 22 20:09:29 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_linger): message refined.
-
-Sun Feb 22 19:28:08 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/init.c (s_recvfrom): use rb_io_wait_readable after
-	  recvfrom.
-
-Sun Feb 22 18:40:04 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_errno): new function.
-	  (sockopt_inspect): use inspect_errno for SO_ERROR.
-
-Sun Feb 22 15:11:51 2009  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (Init_Regexp): define Regexp::FIXEDENCODING.  [ruby-dev:38066]
-
-Sun Feb 22 14:33:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_trans): should not be affected by the encoding of
-	  replacement unless actually modified.  [ruby-talk:328967]
-	  [ruby-core:22326]
-
-Sun Feb 22 13:38:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/init.c (s_recvfrom_nonblock): handles EAGAIN too.
-
-	* ext/socket/init.c (s_accept_nonblock): ditto, and EPROTO depends
-	  on platforms.
-
-Sun Feb 22 13:03:12 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* eval.c (ruby_options): the evaluator now expects iseq instead of tree.
-
-	* ruby.c (ruby_process_options): ditto.
-
-Sun Feb 22 13:03:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (configure): unset PWD to use symlink to building
-	  directory.
-
-	* Makefile.in (up): cd doesn't need LC_TIME, VCS needs.
-
-Sun Feb 22 10:43:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (method_missing): should not pop cfp if missing method
-	  is method_missing.  [ruby-core:22298]
-
-	* vm_eval.c (rb_raise_method_missing): new function to directly
-	  raise NoMethodError.
-
-	* vm_insnhelper.c (vm_call_method): fixed the case method_missing
-	  is missing.
-
-Sun Feb 22 02:15:40 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): handle EMSGSIZE as
-	  well.
-
-Sun Feb 22 02:03:46 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): check max length
-	  overflow.
-
-Sun Feb 22 01:52:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): don't call
-	  discard_cmsg_resource when EMFILE.
-
-Sun Feb 22 01:48:51 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): gc when SCM_RIGHTS
-	  hit the file descriptor limit.
-
-Sun Feb 22 00:51:58 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_getpartial): error message describes what should be
-	  waited after nonblocking error.
-	  (rb_io_write_nonblock): ditto.
-
-	* ext/socket/init.c (s_recvfrom_nonblock): ditto.
-	  (s_accept_nonblock): ditto.
-
-	* ext/socket/socket.c (sock_connect_nonblock): ditto.
-
-	* ext/socket/ancdata.c (bsock_sendmsg_internal): ditto.
-	  (bsock_recvmsg_internal): ditto.
-
-Sun Feb 22 00:31:42 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): check recvmsg error
-	  earlier.
-
-Fri Feb 20 23:28:11 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* util.c (rv_alloc, freedtoa): use our normal xmalloc()/xfree() because
-	  couldn't free the returned pointer from ruby_dtoa().
-
-	* missing/vsnprintf.c (cvt): receive buffer and use/return it instead
-	  of returning the pointer returned from BSD__dtoa().
-
-	* missing/vsnprintf.c (BSD_vfprintf): pass buf to cvt() as the buffer.
-	  [ruby-core:22184]
-
-Thu Feb 19 22:59:09 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (make_io_for_unix_rights): cmsg_len may be
-	  bigger than msg_controllen on 4.4BSD at least.
-	  freeze unix_rights array.
-
-Thu Feb 19 22:17:38 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): fix exception.
-
-Thu Feb 19 21:13:03 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_unix_rights): method renamed.
-
-Thu Feb 19 15:47:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/fake.rb.in: extracted from Makefile.in.
-
-	* configure.in (fake.rb): prefixed with $(arch)-.
-
-Thu Feb 19 15:39:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspbres_verify): OCSP_basic_verify
-	  returns positive value on success, not non-zero.  [ruby-core:21762]
-
-Thu Feb 19 15:17:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tmpdir.rb (@@systmpdir): File.expand_path also joins paths.
-
-Thu Feb 19 15:14:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_each_group): defines only when Etc::Group is
-	  available.
-
-Thu Feb 19 15:11:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h (translit_char): moved from ruby.c.
-
-	* load.c (load_ext): transliterates file separators and back if
-	  needed.
-
-	* symbian/setup (DLN_NEEDS_ALT_SEPARATOR): defined.
-
-Thu Feb 19 14:48:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, */Makefile.sub (LOAD_RELATIVE): moved from ruby.c
-
-Thu Feb 19 14:39:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (darwin): uses -unexported_symbol option of ld instead
-	  of objcopy
-
-	* configure.in (darwin): makes dylib instead of so.
-
-Thu Feb 19 14:22:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): added phony targets.
-
-	* lib/mkmf.rb (create_makefile): creates target directories before
-	  copying.  [ruby-core:21958]
-
-	* lib/mkmf.rb (create_makefile): removes directories in the depth
-	  order.
-
-Thu Feb 19 13:56:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_home_dir): checks if HAVE_PWD_H.  [ruby-dev:38049]
-
-Thu Feb 19 08:45:48 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* ext/socket/rubysocket.h: add "#include <sys/stat.h>"
-
-Thu Feb 19 03:42:48 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_rights): new method.
-	  (make_io_for_rights): new function to allocate
-	  IOs for FDs in SCM_RIGHTS message.
-	  (bsock_recvmsg_internal): use make_io_for_rights.  So the FDs can be
-	  closed by GC.
-
-Thu Feb 19 03:28:59 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* README.EXT, README.EXT.ja: Improve the document about
-	  rb_scan_args() even more.
-
-Thu Feb 19 03:12:51 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_file_exhaustive.rb: skip some tests if euid == 0.
-	  a patch from Lucas Nussbaum in [ruby-core:22209].
-
-Thu Feb 19 03:00:49 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* README.EXT, README.EXT.ja: Improve the document about
-	  rb_scan_args().
-
-Wed Feb 18 22:47:01 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (discard_cmsg_resource): new function to close
-	  file descriptors in control message.
-	  (bsock_recvmsg_internal): call discard_cmsg_resource before retrying
-	  recvmsg.
-
-Wed Feb 18 21:47:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): prevent misalignment.
-
-Wed Feb 18 21:34:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_sendmsg_internal): prevent misalignment.
-
-Wed Feb 18 21:09:43 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): reduce code on
-	  environments which have no control message.
-
-Wed Feb 18 20:27:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (OBJCOPY): set ac_cv_prog_ac_ct_OBJCOPY to do nothing
-	  on cygwin and mingw because symbols are exported by def file.
-
-Wed Feb 18 15:35:36 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_chown): use chown unless HAVE_FCHOWN.
-
-	* io.c (pipe_open): sarg is always used unless HAVE_FORK.
-
-Wed Feb 18 15:23:34 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* bootstraptest/runner.rb: Use RUBY_DESCRIPTION if defined.
-
-Wed Feb 18 14:33:35 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_resurrect), string.c (rb_str_resurrect): new
-	  functions based on [ruby-dev:37983]
-
-	* insns.def (putstring, duparray): use rb_{ary,str}_resurrect().
-
-	* iseq.c (iseq_data_to_ary): needs to result TS_VALUE.
-
-Wed Feb 18 12:35:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_extname): fix for spaces before extension.
-	  [ruby-dev:38044]
-
-Wed Feb 18 12:00:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): suppress a warning.  named magic
-	  numbers.
-
-Wed Feb 18 10:29:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): do not delete main thread from
-	  living_threads.  [ruby-core:19385], [ruby-core:22158]
-
-Wed Feb 18 01:05:05 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl: avoid cyclic require.
-
-	* ext/openssl/lib/openssl/ssl-internal.rb: renamed from ssl.rb
-
-	* ext/openssl/lib/openssl/x509-internal.rb: renamed from x509.rb.
-
-	* lib/net/imap.rb: require openssl, instead of openssl/ssl.
-
-	* lib/net/pop.rb: require openssl, instead of openssl/ssl.
-
-	[ruby-dev:38018]
-
-Wed Feb 18 00:55:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (Etc::Passwd.each, Etc::Group.each): new methods.
-	  [ruby-dev:37999]
-
-Tue Feb 17 23:25:01 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_sendmsg_internal): make the padding
-	  removing only on NetBSD.
-
-Tue Feb 17 19:39:04 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_sendmsg_internal): should not remove the
-	  last padding of control messages, basically.
-
-Tue Feb 17 12:50:57 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_shared_replace): no need for
-	  str_make_independent.
-
-Tue Feb 17 05:41:08 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: fix to add "ensure" codes across "while" clause
-	  before "return" expression.  [ruby-dev:37967]
-
-	* bootstraptest/test_flow.rb: add a test.
-
-Tue Feb 17 01:53:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: generate rb_define_const directly for
-	  rdoc.
-
-	* ext/.document: add socket/constdefs.c.
-
-	* ext/socket/constants.c (sock_define_const): removed.
-	  (sock_define_uconst): ditto.
-	  (rb_mSockConst): new static variable.
-
-Mon Feb 16 23:14:51 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (bsock_sendmsg_internal) [OpenBSD]: don't remove
-	  the last padding to prevent sendmsg failure in test_udp_server in
-	  test/socket/test_socket.rb on OpenBSD 4.4.
-
-Mon Feb 16 21:59:32 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/setup: Update Symbian config to match recent changes in missing/alloca.c
-
-Mon Feb 16 17:04:14 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* class.c (rb_scan_args), README.EXT, README.EXT.ja: Add support
-	  for specifying the number of the trailing mandatory arguments.
-	  Update the documents accordingly. [ruby-dev:37995]
-
-Mon Feb 16 16:46:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* debug.c (set_debug_option): added rtc_error option.
-
-	* win32/Makefile.sub (CRTDEFFLAGS): separated from DEFS.
-
-	* win32/win32.c (rtc_error_handler): ignores RTC errors unless
-	  rtc_error debug option is given.
-
-	* win32/win32.c (rb_w32_sysinit): suppress useless CRT assertions.
-	  [ruby-core:22116]
-
-Sun Feb 15 21:43:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/ostruct.rb (OpenStruct#new_ostruct_member): checks if frozen.
-	  [ruby-talk:328195], [ruby-core:22142]
-
-Sun Feb 15 21:22:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions): aliases
-	  assert_not_ methods.
-
-Sun Feb 15 16:57:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/securerandom.rb (SecureRandom.urlsafe_base64): new method.
-
-Sun Feb 15 14:58:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* hash.c (hash_i): use Murmurhash.
-
-Sun Feb 15 11:45:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_define_hooked_variable): suppress false assertion
-	  with VC9.  [ruby-core:22115]
-
-Sun Feb 15 08:35:33 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/test_pp.rb: extract from lib/pp.rb.
-
-	* test/test_prettyprint.rb: extract from lib/prettyprint.rb.
-
-	* test/test_tsort.rb: extract from lib/tsort.rb.
-
-Sun Feb 15 06:34:22 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.parse): raise ArgumentError if Date._parse don't
-	  extract date information.  [ruby-core:20912]
-
-Sun Feb 15 04:48:08 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_hash_uint32, rb_hash_uint, rb_hash_start, rb_hash_end),
-	  include/ruby/intern.h: add Murmurhash API.  [ruby-dev:37784]
-
-	* complex.c (nucomp_hash), array.c (rb_ary_hash), time.c (time_hash),
-	  string.c (rb_str_hash), object.c (rb_obj_hash), range.c
-	  (range_hash), struct.c (rb_struct_hash), hash.c (rb_any_hash),
-	  rational.c (nurat_hash): use Murmurhash.  [ruby-dev:37784]
-
-Sun Feb 15 03:50:21 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* hash.c (rb_hash): always return a fixnum value because a return
-	  value of rb_hash may be used as a hash value itself and bignums have
-	  no unique VALUE.
-
-	* test/ruby/test_hash.rb: add a test for above.
-
-Sun Feb 15 00:45:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_uniq_bang, rb_ary_uniq): unique by the result of
-	  given block.  [ruby-dev:37998]
-
-Sun Feb 15 00:39:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (ary_resize_capa): should not overwrite outside embedded
-	  array.
-
-Sat Feb 14 20:18:19 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/test_time.rb: extracted from lib/time.rb.
-
-Sat Feb 14 19:20:15 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb: obsolete methods removed.
-	  [ruby-core:21564]
-
-Sat Feb 14 15:46:01 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/pathname.rb (Pathname#binread): added.  [ruby-dev:37952]
-
-Sat Feb 14 13:14:18 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* iseq.c: remove nil parameter from Proc#parameters
-	  after rest appeared.
-
-Sat Feb 14 07:23:52 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_external_str_new_with_enc): change evaluation order
-	  for speed.
-
-Sat Feb 14 02:20:04 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/sockport.h (SET_SA_LEN): cast to void for suppressing a
-	  warning.
-
-Fri Feb 13 23:37:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/win32/lib/Win32API.rb (Win32API#initialize): DL.dlopen
-	  raises DLError.
-
-Fri Feb 13 21:13:19 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (Init_socket): define TCPServer#listen and
-	  UNIXServer#listen here for rdoc.
-
-Fri Feb 13 20:59:48 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (extract_ipv6_pktinfo): set sa_len for 4.4BSD.
-
-Fri Feb 13 15:34:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (simple_default_value): removed.  default values of optional
-	  parameters are not available still now.  [ruby-dev:37980]
-
-Fri Feb 13 15:11:11 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_eval.c (eval_string_with_cref): use rb_vm_get_ruby_level_next_cfp()
-	  instead of vm_get_ruby_level_caller_cfp().  checking a upper frame
-	  is not enough.  [ruby-dev:37984]
-
-	* proc.c, vm_core.h: declare rb_vm_get_ruby_level_next_cfp()
-	  on vm_core.h.
-
-Fri Feb 13 15:01:40 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (rb_fiber_alive_p): fix to return true instead of 0.
-	  [ruby-dev:37991]
-
-	* test/ruby/test_fiber.rb: add a test for Fiber#alive?
-
-Fri Feb 13 09:43:19 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ac_cv_func_flock): using flock defined in
-	  win32/win32.c on mingw.
-
-Fri Feb 13 01:45:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_set_sequence, compile_dstr_fragments),
-	  (iseq_compile_each): hides other internal objects.
-
-	* compile.c (iseq_compile_each): just freeze xstr.
-
-Fri Feb 13 00:48:42 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (defineclass): try to autoload const to be overridden.
-
-Thu Feb 12 23:22:29 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/socket/test_socket.rb (test_udp_server): filter out unreachable
-	  addresses.  [ruby-dev:37970]
-
-Thu Feb 12 22:51:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (hide_obj): OBJ_FREEZE() is not an expression.  a patch
-	  from nagachika <nagachika00 AT gmail.com> at [ruby-dev:37977].
-
-	* compile.c (insn_set_sc_state): fixed typo.
-
-Thu Feb 12 12:36:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/basicsocket.c (bsock_getpeereid): implemented for Solaris
-	  using getpeerucred.
-
-	* ext/socket/extconf.rb: check ucred.h and getpeerucred.
-
-	* ext/socket/rubysocket.h: include ucred.h if available.
-
-Thu Feb 12 19:42:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (compile_array_, defined_expr, iseq_compile_each): hide
-	  and freeze internal literal objects, to prevent from modifying.
-	  [ruby-dev:37959]
-
-	* iseq.c (insn_operand_intern): copy internal literal objects.
-
-	* insns.def (putstring, duparray): ditto.
-
-	* string.c (rb_str_replace): exported.
-
-Thu Feb 12 17:17:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_ungetc): calculates new position
-	  before reallocation.  [Bug#1099]
-
-Thu Feb 12 16:50:27 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: a patch to build on GNU/kOpenSolaris from Rober
-	  Millan at [ruby-core:21888].
-
-Thu Feb 12 15:28:04 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* iseq.c (simple_default_value): allow plain strings as default
-	  values.
-
-Wed Feb 11 18:09:41 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (define_final, undefine_final): shouldn't add/remove finalizer
-	  of frozen objects.
-
-	* gc.c (undefine_final): should remove FL_FINALIZE flag.
-	  [ruby-dev:37964] (also see [ruby-dev:37959])
-
-Wed Feb 11 17:37:41 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.udp_server_sockets): call the block
-	  if given.  close the sockets when the block exits.
-	  (Socket.udp_server_loop): use udp_server_sockets in block form.
-
-Wed Feb 11 17:34:16 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.tcp_server_sockets): call the block
-	  if given.  close the sockets when the block exits.
-	  (Socket.tcp_server_loop): use tcp_server_sockets in block form.
-
-Wed Feb 11 17:01:52 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.unix_server_loop): use
-	  unix_server_socket with a block.
-
-Wed Feb 11 16:54:26 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.unix_server_socket): close the
-	  socket when the block exits.
-
-Wed Feb 11 16:50:59 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.unix_server_socket): call the block
-	  if given.  remove the socket file when the block exits.
-
-Wed Feb 11 16:44:20 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_s_ip_pktinfo): make 3rd argument
-	  optional.
-
-Wed Feb 11 15:47:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (ary_make_shared): returns shared root array itself, and
-	  frozen array can be shared.
-
-Wed Feb 11 14:46:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (setspecial, putstring): fixed typos in rdoc.
-
-	* insns.def (toregexp): uses rb_ary_tmp_new(), and clears it after
-	  used.
-
-Wed Feb 11 14:08:23 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (anc_inspect_socket_rights): return 1 on
-	  success.  0 on failure.
-	  (anc_inspect_passcred_credentials): ditto.
-	  (anc_inspect_socket_creds): ditto.
-	  (anc_inspect_socket_creds): ditto.
-	  (anc_inspect_socket_creds): ditto.
-	  (anc_inspect_ip_recvdstaddr): ditto.
-	  (anc_inspect_ip_pktinfo): ditto.
-	  (anc_inspect_ipv6_pktinfo): ditto.
-	  (ancillary_inspect): check family.
-
-Wed Feb 11 12:55:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (anc_inspect_ip_pktinfo): make result bit
-	  succinct.
-	  (Init_ancdata): fix number of arguments.
-
-Wed Feb 11 11:47:41 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ipsocket.c (Init_ipsocket): undef getpeereid at IPSocket.
-
-Wed Feb 11 10:16:34 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/extconf.rb: check getpeereid.
-
-	* ext/socket/basicsocket.c (bsock_getpeereid): new method.
-
-Wed Feb 11 09:58:59 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket::UDPSource#inspect): fix variable
-	  name.
-
-Wed Feb 11 00:38:16 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_gethostname): use HOST_NAME_MAX.
-
-	* ext/socket/raddrinfo.c (make_ipaddr): local variable renamed.
-
-Tue Feb 10 23:44:53 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/init.c (struct recvfrom_arg): use struct
-	  sockaddr_storage.
-	  (recvfrom_blocking): follow struct recvfrom_arg change.
-	  (s_recvfrom): ditto.
-	  (s_recvfrom_nonblock): use struct sockaddr_storage.
-
-	* ext/socket/socket.c (sock_accept): use struct sockaddr_storage.
-	  (sock_accept_nonblock): ditto.
-	  (sock_sysaccept): ditto.
-
-	* ext/socket/ancdata.c (bsock_recvmsg_internal): use struct
-	  sockaddr_storage.
-
-Tue Feb 10 23:30:32 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/basicsocket.c (bsock_getpeername): use struct
-	  sockaddr_storage.
-	  (bsock_local_address): ditto.
-	  (bsock_remote_address): ditto.
-
-Tue Feb 10 21:26:33 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.udp_server_sockets): new method.
-	  (Socket.udp_server_loop_on): new method.
-	  (Socket.udp_server_loop): new method
-	  (Socket.ip_sockets_port0): extracted from tcp_server_sockets_port0.
-	  (Socket::UDPSource): new class.
-
-Tue Feb 10 21:14:43 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sockaddr_obj): fill pfamily.
-
-Tue Feb 10 21:09:23 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (sockopt_s_bool): new method.
-	  (sockopt_bool): new method.
-
-Tue Feb 10 20:58:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (sockopt_family_m): renamed from sockopt_family.
-	  (sockopt_level_m): renamed from sockopt_level.
-	  (sockopt_optname_m): renamed from sockopt_optname.
-	  (inspect_local_peercred): follow the renaming.
-	  (Init_sockopt): ditto.
-
-Tue Feb 10 20:56:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (anc_inspect_socket_creds): refactored to avoid
-	  a rb_str_cat2 call.
-
-Tue Feb 10 04:34:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (when): makes parentheses balanced.
-
-Tue Feb 10 01:28:49 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ip_cmsg_type_to_sym): renamed from
-	  cmsg_type_to_sym.
-
-Tue Feb 10 01:22:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (sockopt_inspect): refactored.
-
-Tue Feb 10 01:02:16 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: generate intern_family_noprefix.
-
-	* ext/socket/option.c (sockopt_inspect): use intern_family_noprefix
-	  not to show AF_ prefix.
-
-	* ext/socket/ancdata.c (ancillary_inspect): ditto.
-
-Mon Feb  9 23:21:29 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/constants.c (level_arg): use unknown_level_to_int for
-	  non internet protocol.
-	  (optname_arg): use only so_optname_to_int for non internet protocol.
-	  (cmsg_type_arg): use only scm_optname_to_int for non internet
-	  protocol.
-
-	* ext/socket/mkconstants.rb: generate unknown_level_to_int.
-	  rename iplevel_to_int to ip_level_to_int.
-
-Mon Feb  9 23:04:27 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: rename level_to_int to iplevel_to_int.
-	  rename intern_level to intern_iplevel.
-
-	* ext/socket/constants.c: follow the renaming.
-
-	* ext/socket/option.c: ditto.
-
-	* ext/socket/ancdata.c: ditto.
-
-Mon Feb  9 22:52:13 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/rubysocket.h (level_arg): add family argument.
-	  (optname_arg): ditto.
-	  (cmsg_type_arg): ditto.
-	  (rb_sock_getfamily): declared.
-
-	* ext/socket/constants.c (level_arg): add family argument.
-	  (optname_arg): ditto.
-	  (cmsg_type_arg): ditto.
-
-	* ext/socket/init.c (rb_sock_getfamily): defined.
-
-	* ext/socket/option.c (sockopt_initialize): give family for level_arg
-	  and optname_arg.
-	  (sockopt_s_int): ditto.
-
-	* ext/socket/basicsocket.c (bsock_setsockopt): ditto.
-	  (bsock_getsockopt): ditto.
-
-	* ext/socket/ancdata.c (ancillary_initialize): ditto.
-	  (ancillary_s_int): ditto.
-	  (ancillary_cmsg_is_p): ditto.
-	  (bsock_sendmsg_internal): ditto.
-	  (bsock_recvmsg_internal): use rb_sock_getfamily.
-
-Mon Feb  9 21:48:59 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_inspect): show address family.
-
-Mon Feb  9 20:19:36 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/basicsocket.c (bsock_getsockname): use sockaddr_storage.
-
-Mon Feb  9 20:11:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c (load_conv_function51932): fixed for the
-	  case IMultiLanguage is not available.  [ruby-dev:37950]
-
-Mon Feb  9 20:04:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_int): return 1/0 on success/failure.
-	  (inspect_uint): ditto.
-	  (inspect_linger): ditto.
-	  (inspect_socktype): ditto.
-	  (inspect_timeval): ditto.
-	  (inspect_peercred): ditto.
-	  (inspect_local_peercred): ditto.
-	  (sockopt_inspect): refactored.
-
-Mon Feb  9 20:00:26 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: more constants for Solaris.
-
-Mon Feb  9 19:59:18 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/basicsocket.c (bsock_getsockopt): refine address family
-	  examination.
-
-Mon Feb  9 19:52:32 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (sockopt_initialize): argument conversion
-	  reordered.
-
-Mon Feb  9 19:46:22 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (ancillary_initialize): add family argument.
-	  (ancdata_new): ditto.
-	  (ancillary_s_int): ditto.
-	  (ancillary_family): new function.
-	  (ancillary_family_m): new method.
-	  (ancillary_s_ip_pktinfo): follow ancdata_new change.
-	  (ancillary_s_ipv6_pktinfo): ditto.
-	  (bsock_recvmsg_internal): examine the socket address family.
-
-Mon Feb  9 11:31:09 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_encoding_set): ignore second argument when external and
-	  internal are same. [ruby-dev:37939]
-
-Mon Feb  9 09:05:12 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_local_peercred): check version.
-	  (sockopt_inspect): suppress warning.
-
-Mon Feb  9 02:04:03 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_peercred): struct ucred contains
-	  effective uid/gid.
-
-Mon Feb  9 00:44:45 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (sockopt_inspect): add ifdef guard for
-	  LOCAL_PEERCRED.
-
-Mon Feb  9 00:37:06 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_local_peercred): cr_uid is a effective
-	  uid, not a real uid.
-
-Mon Feb  9 00:30:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/extconf.rb: check sys/param.h and sys/ucred.h.
-
-	* ext/socket/rubysocket.h: include sys/param.h and sys/ucred.h.
-
-	* ext/socket/option.c (inspect_local_peercred): new function to show
-	  LOCAL_PEERCRED socket option on FreeBSD.
-	  (sockopt_inspect): show as LOCAL_* socket option if AF_UNIX and level
-	  is 0.
-
-Mon Feb  9 00:01:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/rubysocket.h (sockopt_new): add family argument.
-
-	* ext/socket/option.c (sockopt_initialize): add vfamily argument.
-	  (sockopt_new): add family argument and record it in the object.
-	  (sockopt_family): new method.
-	  (sockopt_s_int): add vfamily argument.
-	  (sockopt_inspect): show family.
-
-	* ext/socket/basicsocket.c (bsock_getsockopt): check address family
-	  using getsockname.
-
-Sun Feb  8 23:37:17 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enumerator.c (enumerator_with_index): receives one argument which
-	  represents a start offset.  [ruby-dev:37921]
-
-Sun Feb  8 23:28:05 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* include/ruby/st.h, st.c: order entries by a linked list instead of
-	  a loop to fix iteration miss when hash is modified during iteration.
-	  [ruby-dev:37910]
-
-Sun Feb  8 23:22:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c (inspect_peercred): new function to show
-	  SO_PEERCRED socket option on GNU/Linux.
-
-Sun Feb  8 22:44:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/backward/rubysig.h (rb_thread_blocking_region_begin),
-	  (rb_thread_blocking_region_end): marked as deprecated.
-
-	* include/ruby/backward/rubysig.h (TRAP_BEG): fix for C++.  a
-	  patch from Aman Gupta at [ruby-core:21934]
-
-Sun Feb  8 21:47:50 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/extconf.rb: check struct cmsgcred.
-
-	* ext/socket/ancdata.c (anc_inspect_passcred_credentials): add
-	  "(ucred)".
-	  (anc_inspect_socket_creds): show struct cmsgcred too, for FreeBSD.
-
-Sun Feb  8 21:05:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/drb/extservm.rb (DRb::ExtServManager#invoke_service_command):
-	  detach spawned process.  [ruby-dev:37936]
-
-Sun Feb  8 20:30:29 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/extconf.rb: check struct sockcred.
-
-	* ext/socket/ancdata.c (anc_inspect_socket_creds): new function to
-	  show SCM_CREDS on NetBSD.
-
-Sun Feb  8 19:05:24 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/backward/rubysig.h: extern "C" was missing.
-	  [ruby-core:21929]
-
-Sun Feb  8 18:46:15 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (anc_inspect_passcred_credentials): new
-	  function to show SCM_CREDENTIALS on GNU/Linux.
-
-Sun Feb  8 18:34:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_s_binread): ensures file path.  [ruby-dev:37940]
-
-Sun Feb  8 13:52:02 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (init_unix_addrinfo): add socktype argument.
-	  (addrinfo_initialize): follow init_unix_addrinfo change.
-	  (addrinfo_s_unix): add optional argument: socktype
-
-Sun Feb  8 13:09:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_APPEND_OPTION, RUBY_APPEND_OPTIONS),
-	  (RUBY_PREPEND_OPTION, RUBY_PREPEND_OPTIONS): add option(s)
-	  without duplication.
-
-	* configure.in (RUBY_DEFINE_IF): changed parameter order, now
-	  condition comes first.
-
-	* configure.in (universal_binary): checks architecture macros, and
-	  improved thin load paths.
-
-Sun Feb  8 09:41:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* runruby.rb: gets extout and arch from rbconfig.rb.
-
-Sat Feb  7 21:26:15 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/socket/test_addrinfo.rb (test_family_addrinfo): don't use
-	  www.ruby-lang.org.
-	  http://d.hatena.ne.jp/nagachika/20090204/working_for_0f0e
-
-Sat Feb  7 18:02:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (--with-arch): added new option to support
-	  universal binary.  replaced --enable-fat-binary option which
-	  didn't work actually.
-
-	* configure.in (RUBY_FUNC_ATTRIBUTE): added conditional test.
-
-	* configure.in (ac_cv_type_getgroups): declared because getgroups()
-	  fills rest of the buffer with garbage on Rosetta.
-
-	* configure.in (alloca): defines only for powerpc, but always
-	  create empty object to suppress ld warning.
-
-	* configure.in (LIBRUBY_DLDFLAGS): set compatibility version with
-	  TEENY.
-
-	* configure.in (CFLAGS, LDFLAGS): separates ARCH_FLAG.
-
-	* configure.in (arch): renamed to "universal" from "fat".
-
-	* Makefile.in (ARCH_FLAG): added.
-
-	* include/ruby/defines.h (WORDS_BIGENDIAN): uses
-	  AC_APPLE_UNIVERSAL_BUILD.
-
-	* missing/alloca.c (alloca): defines only if C_ALLOCA is defined.
-
-Sat Feb  7 12:31:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* runruby.rb: added --precommand and --show options.
-
-	* runruby.rb: added --cpu option.
-
-	* runruby.rb: skips version check in rbconfig.rb.
-
-Sat Feb  7 11:44:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (have_header): needs dependent headers if trying to
-	  compile.
-
-	* ext/socket/extconf.rb: net/if.h depends on other headers.
-
-Sat Feb  7 04:02:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* dir.c (dir_read): don't disable rdoc.
-
-Fri Feb  6 23:28:33 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fread): use rb_io_wait_readable for retry
-	  avoid Errno::EINTR on ruby -e 'trap(:CHLD) {}; spawn("sleep 1"); STDIN.read'
-
-Fri Feb  6 22:36:11 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* thread_pthread.c (native_thread_create) [__SYMBIAN32__]: reduced pthread stack size.
-
-	* thread_pthread.c (thread_timer) [__SYMBIAN32__]: compiled out unsupported yet signal-related functionality.
-
-	* io.c (pipe_open) [__SYMBIAN32__]: fixed compile time error.
-
-Fri Feb  6 22:11:46 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* include/ruby/defines.h [__SYMBIAN32__]: included <sys/select.h> for fd_set definition
-
-Fri Feb  6 21:58:24 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/missing-pips.c: added a stub for missing PIPS function execl.
-
-	* process.c (rb_proc_exec) [__SYMBIAN32__]: removed conditional around execl function call.
-
-Fri Feb  6 20:37:42 2009  Tanaka Akira  <akr@fsij.org>
-
-	* signal.c (register_sigaltstack): ignore sigaltstack error.
-	  It fails on OpenBSD 4.4 when pthread library is linked.
-
-Fri Feb  6 18:18:07 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_readdir_with_enc): fallback to OS's conversion
-	  when ASCII-8BIT is passed.
-
-Fri Feb  6 17:19:23 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/{dir.h, win32.c} (rb_w32_readdir_with_enc): new function to
-	  read entry with specified enc.
-
-	* win32/win32.c (readdir_internal): extract from rb_w32_opendir().
-
-	* win32/win32.c (opendir_internal): extract from rb_w32_readdir().
-
-	* dir.c (dir_read, dir_each): use new READDIR macro instead of readdir()
-	  to pass enc for special version of readdir, such as above.
-
-Fri Feb  6 12:11:24 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (process_options): set initial default_external before -r.
-
-Fri Feb  6 12:03:47 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (process_options): -K and -E in shebang should be reflect to
-	  default_external. [ruby-dev:37920]
-
-Fri Feb  6 07:52:57 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (chfunc): type fixed.
-
-Fri Feb  6 02:51:59 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_codepoint): update RDoc for
-	  String#codepoints.  a patch from Radoslaw Bulat in
-	  [ruby-core:21835]
-
-Fri Feb  6 01:09:13 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c (cont_mark, cont_capture, cont_restore_1): use #else instead
-	  of #elif.  a patch from NISHIMATSU Takeshi <t_nissie at yahoo.co.jp>
-	  in [ruby-list:45856].
-
-Thu Feb  5 20:28:27 2009  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_run_exec_options_err): renamed from
-	  rb_run_exec_options.
-	  (rb_exec_err): renamed from rb_exec.
-	  (rb_fork_err): renamed from rb_fork.
-	  (rb_spawn_err): renamed from rb_spawn.
-	  (rb_run_exec_options): declared with 1.9.1 compatible signature.
-	  (rb_exec): ditto.
-	  (rb_fork): ditto.
-	  (rb_spawn): ditto.
-
-	* process.c (rb_run_exec_options_err): renamed from
-	  rb_run_exec_options.
-	  (rb_exec_err): renamed from rb_exec.
-	  (rb_fork_err): renamed from rb_fork.
-	  (rb_spawn_err): renamed from rb_spawn.
-	  (rb_run_exec_options): defined.
-	  (rb_exec): ditto.
-	  (rb_fork): ditto.
-	  (rb_spawn): ditto.
-
-	* io.c: follow above change.
-
-	* ext/pty/pty.c: follow above change.
-
-	  [ruby-dev:37893]
-
-Thu Feb  5 19:58:40 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket: AddrInfo is renamed to Addrinfo.  [ruby-dev:37876]
-
-Thu Feb  5 16:18:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_SITE_LIB_PATH, RUBY_VENDOR_LIB_PATH): fix for
-	  NetBSD.
-
-Thu Feb  5 16:04:29 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): follow recent changes about paths.
-
-Thu Feb  5 14:26:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MAJOR, MINOR, TEENY): uses RUBY_VERSION_*.
-
-	* mkconfig.rb (prefix): uses ruby_version in config.status.
-
-Thu Feb  5 12:24:18 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_uniq): gets rid of copying.
-
-Thu Feb  5 12:01:53 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (ary_add_hash): split from ary_make_hash().
-
-	* array.c (ary_make_hash): hide a Hash used internally.
-
-	* array.c (ary_recycle_hash): clears internally used hash.  this
-	  name came from [ruby-dev:37908].
-
-	* array.c (rb_ary_diff, rb_ary_and, rb_ary_or, rb_ary_uniq_bang):
-	  recycle hashes.
-
-Thu Feb  5 11:21:35 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_LIB_VERSION): added for library version, to
-	  split from core version.  [ruby-dev:37748]
-
-	* configure.in (RUBY_LIB_PATH, etc): moved actual version
-	  dependent stuff to version.c.
-
-	* ruby.c (ruby_init_loadpath_safe): ditto.
-
-	* version.c (ruby_initial_load_paths): moved initial load path
-	  version depending on version from ruby.c.
-
-	* version.h (RUBY_VERSION_{MAJOR,MINOR,TEENY}): now mean library
-	  and API version, and reverted to 1.9.1.  [ruby-dev:37889]
-
-Thu Feb  5 07:39:33 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/readline/readline.c (Init_readline): remove_history(0) may be
-	  NULL.  [ruby-dev:37891]
-
-Thu Feb  5 03:55:22 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (LOCALTIME): should call tzset() before localtime_r().
-	  [ruby-dev:37896]
-
-Thu Feb  5 02:12:35 2009  Alexander Zavorine  <alexandre.zavorine@nokia.com>
-
-	* symbian/configure.bat: Updated Symbian configuration procedure to
-	  avoid creating files outside build directory
-
-	* symbian/pre-build: ditto
-
-	* symbian/setup: ditto
-
-	* symbian/rubyu.def: removed
-
-Thu Feb  5 01:44:02 2009  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): refine error message for
-	  undefined conversion.  [ruby-core:21828]
-
-Thu Feb  5 01:18:25 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_s_socketpair): make 3rd argument optional.
-
-	* ext/socket/unixsocket.c (unix_s_socketpair): follow the above
-	  change.
-
-	* ext/socket/rubysocket.h (sock_s_socketpair): ditto.
-
-Thu Feb  5 00:09:39 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_ipv6_to_ipv4): new method.
-
-Wed Feb  4 21:59:31 2009  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): show U+XXXX form for undefined
-	  conversion error from UTF-8.
-
-Wed Feb  4 21:57:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_dump): use MBCLEN_CHARFOUND_P properly.
-
-Wed Feb  4 21:55:38 2009  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb: refine success message.
-
-Wed Feb  4 19:10:42 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (id.h): updates from parse.h.
-
-Wed Feb  4 11:45:06 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/mkexports.rb: shouldn't export DllMain.
-	  reported at http://pc11.2ch.net/test/read.cgi/tech/1233686068/21
-
-Wed Feb  4 10:12:05 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD_vfprintf): should support 't' format
-	  modifier to handle PRIdPTRDIFF.  thanks for the info from
-	  Kazuhiro NISHIYAMA.  [ruby-core:21807]
-
-Wed Feb  4 01:28:46 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/extconf.rb: fix struct in_pktinfo and struct in6_pktinfo
-	  detection.
-
-Wed Feb  4 00:32:59 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb(test_getpwnam, test_getgrgid, test_getgrnam):
-	  support an environment that has duplicative entries.  a patch from
-	  Tomoyuki Chikanaga <chikanag at nippon-control-system.co.jp> in
-	  [ruby-dev:37882].
-
-Wed Feb  4 00:17:52 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.tcp_server_sockets_port0): skip
-	  socket creation error.
-
-Tue Feb  3 23:37:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file_internal): resets EOF flag after parse.
-
-Tue Feb  3 23:13:34 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_backtrace): always returns non-nil array if lev is
-	  negative.  [ruby-core:21795]
-
-Tue Feb  3 21:19:06 2009  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/extconf.rb: checked rl_set_screen_size and
-	  rl_get_screen_size.
-
-	* ext/readline/readline.c (readline_s_set_screen_size): added
-	  Readline.set_screen_size.
-
-	* ext/readline/readline.c (readline_s_get_screen_size): added
-	  Readline.get_screen_size.
-
-Tue Feb  3 21:07:19 2009  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c (readline_s_set_completion_proc): set
-	  default if proc is nil. fix #1095
-
-Tue Feb  3 16:36:06 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* array.c (rb_ary_sort_by_bang): RDoc update.
-
-	* NEWS: add Array#sort_by!.
-
-Tue Feb  3 16:23:16 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.tcp_server_sockets_port0): new
-	  private function for allocating same port both IPv4 and IPv6.
-	  (Socket.tcp_server_sockets): use tcp_server_sockets_port0 for port 0.
-
-Tue Feb  3 14:12:10 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: validate data before sending to a server.
-	  [ruby-core:20320]
-
-Tue Feb  3 12:35:41 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (match_array): replace match_check().
-
-	* re.c (match_values_at): ditto.
-
-Tue Feb  3 12:09:08 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (hmac_md5): should use String#ord to get ascii
-	  code from the one-character string.
-
-Tue Feb  3 11:25:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (load_lock): warn for circular require.  [ruby-core:20794],
-	  [ruby-core:20797]
-
-Tue Feb  3 08:35:12 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb (Socket.tcp_server_sockets): extracted from
-	  Socket.tcp_server_loop.
-	  (Socket.accept_loop): ditto.
-	  (Socket.unix_server_socket): extracted from Socket.unix_server_loop.
-	  (Socket.unix_server_loop): use Socket.accept_loop.
-
-Tue Feb  3 08:21:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_readpartial.rb (make_pipe): readpartial does not
-	  work in text mode.
-
-Tue Feb  3 08:18:26 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (RUBYDEF): uses mkexports.rb on cygwin too.
-
-	* win32/mkexports.rb (Exports::Cygwin): added.
-
-Tue Feb  3 08:10:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (Doxyfile): moved from Makefile.in.
-
-	* template/Doxyfile.tmpl: split from Doxyfile.in.
-
-Tue Feb  3 08:01:38 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_write): use of cast expressions as lvalues
-	  is deprecated.
-
-Tue Feb  3 07:57:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/extconf.rb (in_pktinfo, in6_pktinfo),
-	  ext/socket/ancdata.c: defined in w32api/ws2tcpip.h on cygwin but
-	  cannot compile for some reason.
-
-Tue Feb  3 07:02:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/langinfo.c (nl_langinfo_codeset): accepts iso-8859
-	  fragment.  [ruby-core:21757]
-
-Tue Feb  3 07:01:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb (patchlevel): config.status may not contain
-	  PATCHLEVEL even if other version numbers exist.
-
-Mon Feb  2 23:43:00 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (Init_addrinfo): add AddrInfo#to_s as an
-	  alias of AddrInfo#to_sockaddr.
-
-	* ext/socket/option.c (Init_sockopt): add Socket::Option#to_s as an
-	  alias of Socket::Option#data.
-
-	  [ruby-dev:37873]
-
-Mon Feb  2 21:04:13 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_sort_by_bang): RDoc update.  [ruby-core:21742]
-
-Mon Feb  2 20:49:24 2009  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c: Introduce id_each to save rb_intern() and SYM2ID()
-	  calls.
-
-Mon Feb  2 19:55:51 2009  Tanaka Akira  <akr@fsij.org>
-
-	* test/socket/test_addrinfo.rb: use AddrInfo.getaddrinfo to generate
-	  IPv6 address.  AddrInfo.ip generates IPv4 address for IPv4 mapped
-	  IPv6 address if --with-lookup-order-hack=INET.
-	  [ruby-dev:37868]
-
-Mon Feb  2 19:17:16 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* doc/NEWS-1.9.1: typo fixed: collect_all -> collect.
-	   [ruby-core:21706]
-
-Mon Feb  2 17:23:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (dir.o, win32.o): depend on win32/dir.h.
-
-Mon Feb  2 17:13:46 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* mkconfig.rb: patchlevel is sometimes minus.
-
-	* win32/resource.rb: ditto.
-
-Mon Feb  2 17:11:23 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ancdata.c (cmsg_type_to_sym): add #ifdef for no IPv6
-	  environment.
-
-Mon Feb  2 17:05:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext): should not be infected from other
-	  load paths.
-
-Mon Feb  2 16:33:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_s_home): new method.   [ruby-core:21454]
-
-Mon Feb  2 16:06:10 2009  Tanaka Akira  <akr@fsij.org>
-
-	* version.h: bump up to 1.9.2 patchlevel -1.
-	  yugui recommend "-1" strongly.
-
-	* lib/rubygems/version.rb: accept negative patchlevel.
-
-Mon Feb  2 14:53:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_initialize): make 3rd argument, protocol,
-	  optional.
-
-Mon Feb  2 14:47:53 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_sort_by_bang): new method.  requested in
-	  [ruby-core:21709]
-
-Mon Feb  2 14:22:56 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/constants.c (cmsg_type_arg): INET6 check.
-
-Mon Feb  2 14:18:20 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/option.c: use INET6 instead of IPV6.
-
-Mon Feb  2 12:47:47 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/{options,raddrinfo}.c: use INET6 instead of AF_INET6 for
-	  VC++6.
-
-Mon Feb  2 12:41:52 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* complex.c (f_signbit): regard NaN as a positive value.
-	  [ruby-dev:37861].
-
-Mon Feb  2 12:39:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sample/test.rb (valid_syntax?), test/ruby/test_system.rb
-	  (TestSystem::valid_syntax?): use catch and throw instead of
-	  return inside BEGIN block.
-
-Mon Feb  2 11:45:10 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/rubysocket.h (cmsg_type_arg): declared.
-	  (Init_ancdata): ditto.
-
-	* ext/socket/init.c (Init_socket_init): call Init_ancdata.
-
-	* ext/socket/constants.c (cmsg_type_arg): defined.
-
-	* ext/socket/depend: add dependency for ancdata.o.
-
-	* ext/socket/mkconstants.rb: generate scm_optname_to_int.
-	  more constants.
-
-	* ext/socket/extconf.rb: add ancdata.o.
-
-	* ext/socket/ancdata.c: new file.  new method
-	  BasicSocket#{sendmsg,sendmsg_nonblock,recvmsg,recvmsg_nonblock}
-
-Mon Feb  2 10:57:27 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c, win32/dir.h (open_dir_handle, rb_w32_opendir,
-	  move_to_next_entry, rb_w32_readdir, check_valid_dir): change backend
-	  API from A to W.
-
-Mon Feb  2 10:48:38 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/basicsocket.c (bsock_setsockopt): accept Socket::Option
-	  object.
-	  (bsock_getsockopt): return Socket::Option object.
-
-	* ext/socket/option.c: new file.
-
-	* ext/socket/rubysocket.h (rb_cSockOpt): declared.
-	  (sockopt_new): ditto.
-	  (Init_sockopt): ditto.
-
-	* ext/socket/init.c (Init_socket_init): call Init_sockopt.
-
-	* ext/socket/depend: add dependency for option.o
-
-	* ext/socket/mkconstants.rb: generate intern_level, intern_so_optname,
-	  intern_ip_optname, intern_ipv6_optname, intern_tcp_optname,
-	  intern_udp_optname and intern_scm_optname.
-
-	* ext/socket/extconf.rb: add option.o.
-
-Mon Feb  2 09:49:39 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_backtrace_each): progname is not available at
-	  initializing phase.
-
-Mon Feb  2 08:12:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/xmlrpc/server.rb (Server#serve): gets rid of hardcoded
-	  platform names.
-
-	* lib/resolv.rb (Resolv::Hosts::DefaultFileName),
-	  (Resolv::DNS::Config.default_config_hash): tries win32/resolv on
-	  mswin64 too.
-
-	* lib/rubygems/specification.rb (Gem::Specification#ruby_code):
-	  added mswin64.
-
-	* lib/drb/extservm.rb (DRb::ExtServManager#invoke_service_command):
-	  spawn is better to start a process in background.
-
-	* ext/extmk.rb: uses FNM_SYSCASE.
-
-	* instruby.rb: installs win32.h on mswin64 platform.
-	  [ruby-core:21722]
-
-Mon Feb  2 07:36:13 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_backtrace_each): now takes an iterator function.
-
-	* vm_core.h (rb_make_backtrace, rb_backtrace_each): added
-	  prototypes.
-
-	* vm_dump.c (rb_vm_bugreport), vm_eval.c (rb_backtrace): gets rid
-	  of allocating objects.  [ruby-core:21619]
-
-	* vm_eval.c (rb_backtrace_each): new function which iterates over
-	  each backtrace info.
-
-Mon Feb  2 06:51:36 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding): Windows' filesystem encoding is
-	  sometimes ANSI code page and sometimes OEM code page. we should check
-	  whether code page is used.
-
-Sun Feb  1 21:27:55 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_ipv4_private_p): new method.
-	  (addrinfo_ipv4_loopback_p): ditto.
-	  (addrinfo_ipv4_multicast_p): ditto.
-
-Sun Feb  1 16:10:06 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (Switch#summarize): strips an equal sign from
-	  short option, and fills right sides in shorter lines.
-	  [ruby-talk:326414]
-
-Sun Feb  1 05:19:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (rb_const_get_0), vm_insnhelper.c (vm_get_ev_const):
-	  avoids infinite self recursion autoload.  [ruby-core:21696]
-
-Sat Jan 31 22:50:38 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb (assert_equal): show class in failure
-	  message if meaningful.
-
-Sat Jan 31 22:38:46 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS#each_address): don't query IPv6 address
-	  if the host has no global IPv6 address.
-
-Sat Jan 31 22:29:05 2009  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (STR2CSTR): removed.
-	  (rb_str2cstr): removed.
-
-	* object.c (rb_str2cstr): removed.
-
-Sat Jan 31 20:07:59 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_ipv6_unspecified_p): new method.
-	  (addrinfo_ipv6_loopback_p): ditto.
-	  (addrinfo_ipv6_multicast_p): ditto.
-	  (addrinfo_ipv6_linklocal_p): ditto.
-	  (addrinfo_ipv6_sitelocal_p): ditto.
-	  (addrinfo_ipv6_v4mapped_p): ditto.
-	  (addrinfo_ipv6_v4compat_p): ditto.
-	  (addrinfo_ipv6_mc_nodelocal_p): ditto.
-	  (addrinfo_ipv6_mc_linklocal_p): ditto.
-	  (addrinfo_ipv6_mc_sitelocal_p): ditto.
-	  (addrinfo_ipv6_mc_orglocal_p): ditto.
-	  (addrinfo_ipv6_mc_global_p): ditto.
-
-Sat Jan 31 19:09:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_require_safe): raises when the path to be loaded is
-	  tainted.  [ruby-dev:37843]
-
-Sat Jan 31 18:08:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (optflags): defaulted to -O3 to get rid of slug of
-	  gcc 4.3.
-
-Sat Jan 31 18:03:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (List#accept, parse_in_order): n option is no
-	  longer needed.
-
-Sat Jan 31 14:12:43 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb (Pathname#each_child): new method.
-
-Sat Jan 31 00:07:49 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb
-	  (Test::Unit::Assertions#assert_nothing_raised): suppress warning.
-	  [ruby-core:21312]
-
-Fri Jan 30 21:49:32 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb (Pathname#realdirpath): new method based on the
-	  patch in [ruby-dev:36560] by Akinori MUSHA.
-	  [ruby-dev:36290]
-
-Fri Jan 30 18:04:23 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_write): limit write size to 32KB if the file
-	  seems to be console.  [ruby-core:21613]
-
-Fri Jan 30 16:12:32 2009  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/curses/curses.c (Init_curses): Curses#crmode and
-	  Curses#nocrmode changes to the module function.
-	  fix #916
-
-Fri Jan 30 14:31:14 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/make-snapshot (prereq): remove enc.mk from tarball because
-	  BSD make checks $(srcdir)/enc.mk and try to run $(builddir)/enc.mk.
-
-Fri Jan 30 14:11:48 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/depend: extract compile rules to each target for nmake.
-
-Fri Jan 30 12:59:49 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (RUBYDEF): depends on makefiles.
-
-	* cygwin/GNUmakefile.in (RUBYDEF): adds DATA to non-function symbols
-	  which is not marked as T.
-
-Fri Jan 30 11:03:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (assert_respond_to): gets rid of
-	  overcounting.   [ruby-dev:37703]
-
-Fri Jan 30 02:55:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_init_by_convpath_i): make it static.
-
-Thu Jan 29 16:22:41 2009  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* load.c (rb_feature_provided): should not calculate len by pointer
-	  subtraction because feature may be a expanded path.
-	  [ruby-core:21267]
-
-Thu Jan 29 14:12:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (BASERUBY): erases RUBYOPT at the test.
-
-	* configure.in (OBJCOPY): not used on Windows.
-
-Thu Jan 29 13:16:11 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/securerandom.rb (SecureRandom.uuid): uses unpacked array
-	  instead of string, because String#[] returns one length string.
-
-Thu Jan 29 12:29:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (FileUtils#rake_system): no longer needs workaround
-	  on Windows.  [ruby-core:21339]
-
-	* lib/rake/win32.rb (Rake::Win32#rake_system): ditto.
-
-	* lib/rake/win32.rb (Rake::Win32#win32_system_dir): no longer
-	  needs environment variables other than APPDATA now.
-
-	* lib/rake.rb (Rake::Application#standard_system_dir): uses
-	  platform specific definition on Windows system.
-
-Thu Jan 29 12:18:54 2009  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* lib/securerandom.rb: new method SecureRandom#uuid
-
-Thu Jan 29 11:22:19 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/raddrinfo.c (inspect_sockaddr): if defined AF_INET6,
-	  perhaps can inspect IPv6 addresses if not defined INET6.
-
-	* ext/socket/socket.c (socket_s_ip_address_list): support Windows XP
-	  or later. (Win2k or earlier is still not supported)
-
-Thu Jan 29 00:24:48 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/zlib/zlib.c (zstream_run): previous change didn't resolve the
-	  problem.
-
-Wed Jan 28 22:51:12 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/zlib/zlib.c (zstream_run): desperately guard the variable.
-	  [ruby-core:20576]
-
-Wed Jan 28 15:24:11 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* math.c: SEGV is caused by implicit rb_to_float declaration
-	  test_complexrational.rb: [BUG] in IA-64 architecture
-
-Tue Jan 27 20:02:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/init.c (socks_connect_blocking): moved from
-	  sockssocket.c.  [ruby-dev:37834]
-
-	* sockssocket.c (socks_init): don't omit "int" type.
-
-Tue Jan 27 14:41:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (RUBYDEF): needs DATA marks to export
-	  non-function symbols.  [ruby-core:21582]
-
-	* win32/mkexports.rb (Exports::Mingw#each_export): ditto.
-
-Tue Jan 27 12:59:55 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/ripper/depend: use VPATH.
-	  If a platform doesn't support VPATH, Ruby doesn't support it:
-	  for example MSYS. [ruby-core:21570]
-
-Tue Jan 27 12:21:17 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/ripper/depend: lex.c's correct path is ../../lex.c.
-
-Tue Jan 27 11:09:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (try_header): checks the header depending on
-	  platform.
-
-	* lib/mkmf.rb (have_header, find_header): use try_header.
-
-	* win32/Makefile.sub (try_header): uses try_compile to get rid of
-	  slow -E option of VC.
-
-Tue Jan 27 11:03:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (distclean-enc, realclean-enc): do not call clean of
-	  enc.mk twice or more.
-
-	* enc/depend (cleanobjs): added deffile.
-
-	* lib/mkmf.rb (create_makefile): removes deffile at clean instead
-	  of distclean.
-
-	* win32/Makefile.sub (miniruby, LIBRUBY_SO): removes lib and exp
-	  files.
-
-	* win32/Makefile.sub (clean, distclean): have moved to common.mk.
-
-	* win32/rmdirs.bat: omits `not empty' message.
-
-Tue Jan 27 10:15:33 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (struct rb_transcoding): added ary member for debug.
-
-Tue Jan 27 10:10:14 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Doxyfile.in (FILE_VERSION_FILTER, INPUT_FILTER): should not use
-	  ./miniruby directly for cross compiling.
-
-Tue Jan 27 04:02:53 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/ripper/depend: fixed dependency path to lex.c.
-	  [ruby-core:21570]
-
-Tue Jan 27 03:43:34 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_any_hash): fixed performance issues with nil, true,
-	  false as hash keys.  a patch from Matthias Waechter.
-	  [ruby-core:21568]
-
-Tue Jan 27 03:23:43 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): should point correct path to
-	  ruby.h and defines.h.   [ruby-core:21569]
-
-Mon Jan 26 16:00:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_aset): fixed arguments evaluation order.
-
-Mon Jan 26 15:49:42 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pathname.rb (chop_basename, prepend_prefix): use o option.
-
-Sun Jan 25 16:35:44 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (socket_s_ip_address_list): renamed from
-	  socket_s_list_ip_address.  [ruby-dev:37806]
-
-Sun Jan 25 12:17:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (RUBYDEF): needs read-only section too.
-
-Sun Jan 25 12:02:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (clean-ext): condition of EXTS was inverted.
-
-Sun Jan 25 11:50:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): fixed the variables order because
-	  converter proc refers the separator.
-
-Sun Jan 25 11:25:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, win32/Makefile.sub (RMDIRS): remove directory and
-	  parents.
-
-	* Makefile.in, win32/Makefile.sub (distclean-rdoc): added to remove
-	  temporary rdoc.
-
-	* Makefile.in, win32/Makefile.sub (clean-ext): skips non-existent
-	  directories.
-
-	* common.mk (clean, distclean): cleans rdoc.
-
-	* common.mk (clean-extout): removes extout directory.
-
-	* configure.in (RMDIRS, RMALL): added to clean extout.
-
-	* lib/fileutils.rb (FileUtils#rmdir): added :parents option.
-
-	* lib/mkmf.rb (create_makefile): cleans installed files at clean
-	  instead of distclean.
-
-	* lib/mkmf.rb (create_makefile): added clean-so and clean-rb.
-
-	* lib/mkmf.rb (def init_mkmf): added DISTCLEANDIRS.
-
-	* lib/un.rb (rmdir): added -p option.
-
-	* tool/rmdirs, win32/rmdirs.bat: removes directory and the parents.
-
-	* win32/rm.bat: added -r option.
-
-Sun Jan 25 09:09:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (join_path): use strlcat() to force link.
-
-	* dir.c (glob_helper): no strcpy() is needed since len is known.
-
-Sun Jan 25 06:44:58 2009  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_ssl.c: Server Name Indication support.
-	  new methods SSLContext#server_name_cb=, SSLSocket#hostname=.
-
-	* test/openssl/test_ssl.rb: Tests for above.
-
-Sat Jan 24 08:22:35 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): tools under the top source
-	  directory are not installed, so unusable outside extmk.rb.
-
-Fri Jan 23 17:24:31 2009  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb (Enumerator#inspect): avoid warning.
-
-Fri Jan 23 15:12:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (mkintpath): new function which converts native path
-	  to format acceptable in Makefile.
-
-	* lib/mkmf.rb (configuration): leaves PATH_SEPARATOR unchanged.
-
-	* lib/mkmf.rb (configuration): converts srcdir, topdir and hdrdir.
-	  a patch by Alexey Borzenkov <snaury AT gmail.com> at
-	  [ruby-core:21448].
-
-	* lib/mkmf.rb (try_func): got rid of c-mode confusion.
-
-Fri Jan 23 13:26:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (trap_handler): also accepts symbols.  [ruby-dev:37823]
-
-Thu Jan 22 18:14:04 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): removes installed files under
-	  extout at distclean.
-
-Thu Jan 22 17:12:37 2009  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI.parse): generate only key on params hash
-	  if request have only key uri parameters.
-		(ex. index.cgi?aaa&bbb=1 # params=>{:aaa=>[],:bbb=>["1"]})
-
-	* test/cgi/test_cgi_core.rb: fix test for key only params.
-
-Thu Jan 22 16:29:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems/installer.rb (Gem::Installer#initialize): fixed
-	  typos.
-
-	* test/rubygems/test_gem.rb (test_self_dir): removed false
-	  assertions.
-
-	* test/rubygems/test_gem.rb (test_self_set_paths): checks if paths
-	  are included.
-
-	* test/rubygems/test_gem_commands_install_command.rb
-	  (test_execute_remote): checks diagnostic message too.
-
-	* test/rubygems/test_gem_installer.rb (load): uses Gem.ruby.
-
-	* test/rubygems/gemutilities.rb (Gem.ruby): initializes from the
-	  environment variable to run without installation.
-
-	* test/rubygems/gemutilities.rb (RubyGemTestCase#util_build_gem):
-	  creates cache directory.
-
-Thu Jan 22 16:12:51 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* revert previous revision.  it's already out-of-date.
-
-Thu Jan 22 15:54:02 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h, win32/win32.c (rb_w32_is_valid_fd): new function
-	  to validate fd.
-
-	* io.c (rb_io_initialize): check fd with above function.
-
-Thu Jan 22 14:53:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_process.rb (MANDATORY_ENVS): needs RUBYLIB to run
-	  tests without install.
-
-Thu Jan 22 12:19:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (define_final): cannot define finalizer for immediate
-	  values.  [ruby-core:21500]
-
-	* gc.c (define_final): freezes or hides internal values.
-
-Thu Jan 22 11:33:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_time_timeval): made a real prototype.  a patch from
-	  Marcus Rueckert <darix AT opensu.se> at [ruby-core:21492].
-
-Wed Jan 21 21:43:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_ungetbyte, rb_io_ungetc): allows nil to reset EOF
-	  flag with ungetting nothing.
-
-	* ruby.c (load_file_internal): rests EOF flag to make possible to
-	  load from stdin after reading data.
-
-Wed Jan 21 17:17:18 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (ary_double_capa): a new function to expand array more
-	  aggressively.   [ruby-core:21460]
-
-	* array.c (rb_ary_store): use ary_double_capa().
-
-	* array.c (rb_ary_unshift_m): ditto.
-
-	* array.c (rb_ary_splice): ditto.
-
-Wed Jan 21 15:32:15 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_ungetbyte, rb_io_ungetc): clears EOF flag.
-
-Wed Jan 21 14:41:48 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* array.c (take_items): to_ary() raises ArgumentError if cannot to
-	  convert to Array. [ruby-dev:37797]
-
-Wed Jan 21 14:32:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (debug_lines): calls rb_intern() once.
-
-Wed Jan 21 13:58:17 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/io.h (FMODE_EOF): EOF flag on TTY.
-
-	* io.c (io_set_eof): sets EOF flag for TTY.
-
-	* io.c (io_seek): clears EOF flag.
-
-	* io.c (io_fillbuf): returns EOF if already met EOF.  [ruby-dev:37798]
-
-	* io.c (io_fillbuf, io_fread, io_getpartial): sets EOF.
-
-Wed Jan 21 08:22:04 2009  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.3.1 r4532.
-	* test/minitest/*.rb: ditto.
-
-Tue Jan 20 20:16:21 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (socket_s_list_ip_address): new method.
-	  (sockaddr_obj): new function.
-
-	* ext/socket/rubysocket.h: include ifaddrs.h, sys/ioctl.h,
-	  sys/sockio.h, net/if.h if available.
-	  (addrinfo_new): declared.
-
-	* ext/socket/raddrinfo.c (addrinfo_new): exported.
-
-	* ext/socket/extconf.rb: check ifaddrs.h, sys/ioctl.h, sys/sockio.h,
-	  net/if.h and getifaddrs.
-
-Tue Jan 20 20:05:21 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/rubysocket.h (pseudo_AF_FTIP): moved from mkconstants.rb.
-
-	* ext/socket/mkconstants.rb: prepend header if -H is not given.
-
-Tue Jan 20 17:50:00 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_buf): use nkf_char.
-
-Tue Jan 20 16:17:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (ruby_Init_{Continuation_body,Fiber_as_Coroutine}): prefixed
-	  with ruby_ to export.
-
-	* ext/continuation/continuation.c, ext/fiber/fiber.c: ditto.
-
-Tue Jan 20 15:32:29 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (miniruby): renames and then removes, to get rid of
-	  EPERM on cygwin and mingw.
-
-	* Makefile.in ($(LIBRUBY_SO)): use wildcard option of objcopy.
-
-	* configure.in (DLDFLAGS): do not export all symbols.
-
-	* cygwin/GNUmakefile.in (RUBYDEF): rejects symbols prefixed with
-	  Init_.
-
-	* win32/mkexports.rb (Exports::Mingw): includes all symbols as
-	  well as mswin32, except for prefixed with Init_.
-
-Tue Jan 20 13:03:50 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (hash): fixed the tail bytes handling in the aligned
-	  access case.
-
-Tue Jan 20 09:26:05 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_buf_push): maybe a bug.
-
-	* ext/nkf/nkf-utf8/nkf.c (options): no need to support help option.
-
-Tue Jan 20 06:48:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (take_items), enum.c (enum_zip): tries to convert to
-	  array first.  [ruby-core:21442]
-
-Tue Jan 20 03:50:37 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: Update nkf to 2.0.9.
-	  revert -s meaning as Shift_JIS, etc.
-
-Tue Jan 20 03:42:32 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (hash): fixed typo.  [ruby-dev:37791]
-
-Tue Jan 20 01:15:27 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb (SOMAXCONN): defined.
-
-Mon Jan 19 22:31:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: use erb for generating code.
-
-Mon Jan 19 17:33:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (hash): defaulted to MurmurHash 2.0.
-
-Mon Jan 19 17:29:34 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/defines.h (RUBY_ALIAS_FUNCTION_TYPE): added.
-
-Mon Jan 19 17:24:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_dump.c (vm_stack_dump_each): used only if debug mode.
-
-Mon Jan 19 16:32:35 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (hash): added MurmurHash 2.0.
-
-Mon Jan 19 14:31:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_execute_interrupts): needs
-	  rb_signal_buff_size to be declared.
-
-Mon Jan 19 13:34:25 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.c (require_libraries): reset th->parse_in_eval while
-	  loading libraries.  fixes [ruby-dev:37780]
-
-Mon Jan 19 11:46:39 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_eval.c, eval.c (rb_f_block_given_p): move definition of
-	  "iterator?" and "block_given?" to make static.
-
-	* vm.c (vm_get_ruby_level_caller_cfp): make it static.
-
-	* eval_intern.h, vm_insnhelper.c: move decl. of
-	  vm_get_ruby_level_caller_cfp()
-	  from eval_intern.h to vm_insnhelper.c.
-
-Mon Jan 19 11:27:39 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: add a prefix "rb_" to exposed functions
-	  vm_get_ruby_level_next_cfp(), rb_vm_make_env_object(),
-	  vm_stack_to_heap(), vm_make_proc(), vm_invoke_proc(),
-	  vm_get_sourceline(), vm_cref(), vm_localjump_error(),
-	  vm_make_jump_tag_but_local_jump(), vm_jump_tag_but_local_jump().
-	  This changes may affect only core because most of renamed functions
-	  require a pointer of not-exposed struct such as rb_thread_t or NODE.
-	  In short, they are core functions.
-
-	* cont.c, eval.c, eval_intern.h, load.c, proc.c, thread.c,
-	  vm_core.h, vm_dump.c, vm_eval.c, vm_exec.c, vm_insnhelper.c:
-	  ditto.
-
-Mon Jan 19 11:22:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/rubysocket.h (rb_cUNIXSocket, rb_cUNIXServer),
-	  (unixpath, unixaddr): UNIX domain sockets depend on sys/un.h.
-
-Mon Jan 19 11:02:30 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_dump.c: add a prefix "rb_vmdebug_" to
-	  vm_stack_dump_raw(), vm_stack_dump_raw_current(),
-	  vm_env_dump_raw(), vm_proc_dump_raw(), vm_stack_dump_th(),
-	  vm_debug_print_register(), vm_thread_dump_regs(),
-	  vm_debug_print_pre(), vm_debug_print_post(),
-	  vm_thread_dump_state().
-	  This change also may affect core (in fact, user of
-	  above functions may be only ko1).
-
-	* vm_core.h: ditto.
-
-	* vm_exec.h (SDR2): remove duplicate definition.
-
-Mon Jan 19 11:00:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_ip_port): use AF_INET6 only when
-	  defined, as well as addrinfo_ipv6_p().
-
-Mon Jan 19 10:43:38 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (garbage_collect_with_gvl): suppress warnings.
-
-Mon Jan 19 10:34:32 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/depend: workaround for nmake. files in depend without
-	  paths should converted by RULE_SUBST, but mkmf.rb cannot recognize
-	  macros currently.
-
-Mon Jan 19 09:53:43 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c:
-	  rename ruby_iseq_disasm_insn() -> rb_iseq_disasm_insn().
-	  rename ruby_iseq_disasm() -> rb_iseq_disasm().
-
-	* compile.c:
-	  rename ruby_iseq_compile() -> rb_iseq_compile_node().
-	  rename ruby_iseq_translate_threaded_code() ->
-	         rb_iseq_translate_threaded_code().
-	  rename ruby_insns_name_array() -> rb_insns_name_array().
-	  rename ruby_iseq_build_from_ary() -> rb_iseq_build_from_ary().
-
-	* iseq.c, compile.c: remove ruby_insn_make_insn_table() and make
-	  static function insn_make_insn_table().
-
-	* iseq.h, ruby.c, vm.c, vm_core.h, vm_eval.c, vm_dump.c,
-	  blockinlining.c: ditto.
-	  Rename strange "ruby_" prefix to "rb_" prefix.
-	  This changes may affect only core because renamed functions
-	  require a pointer of rb_iseq_t which is not exposed.
-
-Mon Jan 19 09:21:04 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/mkconstants.rb: define macros with default value in
-	  constdefs.h if not exist them.
-
-	* ext/socket/raddrinfo.c (addrinfo_mdump, addrinfo_mload): support
-	  UNIX socket only on platforms which support it.
-
-Mon Jan 19 08:56:53 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, vm_eval.c (rb_f_local_variables): move definition from eval.c
-	  to vm_eval.c because vm_collect_local_variables_in_heap() should
-	  be static function.
-
-	* vm.c (vm_collect_local_variables_in_heap): make it static.
-
-Mon Jan 19 04:06:10 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (rb_iseq_load): renamed from ruby_iseq_load, since it is
-	  for C extensions or the ruby core.  [ruby-core:21407]
-
-Mon Jan 19 03:06:22 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (str_transcode0): fix: :xml option doesn't
-	  work on str.encode([options]) form without default_internal.
-
-Sun Jan 18 16:56:46 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_inspect_sockaddr): new
-	  method AddrInfo#inspect_sockaddr.
-	  (inspect_sockaddr): extracted from addrinfo_inspect.
-	  (addrinfo_inspect): use inspect_sockaddr.
-	  (Init_addrinfo): define the new method.
-
-Sun Jan 18 16:46:37 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_ip_address): new method
-	  AddrInfo#ip_address.
-	  (addrinfo_ip_port): new method AddrInfo#ip_port.
-	  (Init_addrinfo): define the methods above.
-
-Sun Jan 18 14:29:52 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/unixsocket.c: redundant #ifdef removed.
-
-Sun Jan 18 03:33:23 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_mdump): don't use symbol.
-	  (addrinfo_mload): ditto.
-
-Sun Jan 18 03:05:20 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (addrinfo_mdump): new method.
-	  (addrinfo_mload): new method.
-	  (Init_addrinfo): define the method above.
-
-	* ext/socket/constants.c (constant_arg): str_to_int's first argument
-	  constified.
-
-	* ext/socket/mkconstants.rb (gen_name_to_int_decl): generated
-	  function's first argument constified.
-	  (gen_name_to_int_func_in_guard): ditto.
-	  (ipproto_to_int): generated.
-
-	* ext/socket/rubysocket.h (IS_IP_FAMILY): moved from raddrinfo.c.
-
-Sun Jan 18 01:37:50 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_s_getnameinfo): accept AddrInfo object.
-
-	* ext/socket/raddrinfo.c (rb_check_sockaddr_string_type): defined.
-
-	* ext/socket/rubysocket.h (rb_check_sockaddr_string_type): declared.
-
-Sat Jan 17 22:01:15 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb: new file.
-
-Sat Jan 17 19:33:48 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in (VCSUP): fixed the cases for git-svn or git.
-
-	* win32/Makefile.sub (VCSUP): ditto.
-
-	* Makefile.in (up): `cd' is necessary for git and git-svn.
-
-Sat Jan 17 19:16:16 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: generate a header file for generated
-	  functions.
-
-	* ext/socket/rubysocket.h: include constdefs.h.  don't declare
-	  generated functions.
-
-	* ext/socket/constants.c: include constdefs.c instead of constants.h.
-
-	* ext/socket/depend: dependency updated.
-
-Sat Jan 17 17:58:22 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/xmp.rb: multilingualizes XMP::StringInputMethod.
-	  [ruby-core:21383].
-
-Sat Jan 17 15:01:22 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/raddrinfo.c (make_inspectname): add a res argument to
-	  suppress numeric inspectname.
-	  (init_addrinfo_getaddrinfo): call make_inspectname here.
-	  (addrinfo_firstonly_new): follow make_inspectname change.
-	  (addrinfo_list_new): ditto.
-	  (addrinfo_initialize): follow init_addrinfo_getaddrinfo change.
-
-Sat Jan 17 14:52:27 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: don't cause an error for duplicate names.
-
-Sat Jan 17 12:46:17 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket: split files for each class.
-
-	* ext/socket/rubysocket.h: common header.
-
-	* ext/socket/basicsocket.c: new file for BasicSocket.
-
-	* ext/socket/ipsocket.c: new file for IPSocket.
-
-	* ext/socket/tcpsocket.c: new file for TCPSocket.
-
-	* ext/socket/tcpserver.c: new file for TCPServer.
-
-	* ext/socket/sockssocket.c: new file for SOCKSSocket.
-
-	* ext/socket/udpsocket.c: new file for UDPSocket.
-
-	* ext/socket/unixsocket.c: new file for UNIXSocket.
-
-	* ext/socket/unixserver.c: new file for UNIXServer.
-
-	* ext/socket/socket.c: now for Socket.
-
-	* ext/socket/raddrinfo.c: new file for AddrInfo and name resolution.
-
-	* ext/socket/constants.c: new file for constants.
-
-	* ext/socket/init.c: new file for utilities.
-
-	* ext/socket/mkconstants.rb: export *_to_int.
-
-	* ext/socket/extconf.rb: add new object files.
-
-	* ext/socket/depend: add dependencies for new files.
-
-	* ext/.document: add new files.
-
-Sat Jan 17 11:12:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (cont_restore_0): padding size doesn't need to be large
-	  if alloca is used.  suppress warnings.
-
-Sat Jan 17 11:12:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_dump.c (vm_stack_dump_each): initialized at declarations.
-
-	* vm_dump.c (rb_vm_bugreport): constified to suppress a warning.
-
-Fri Jan 16 22:30:27 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c: move addrinfo code.
-
-Fri Jan 16 18:51:11 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (up): tell nmake that need to run command via
-	  shell.
-
-Fri Jan 16 18:43:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (package): includes all rules and expand
-	  configured values from the environment to create *.inc, sets RM
-	  for ripper.c, and needs chdir if absolute path is given with
-	  -exported option.
-
-Fri Jan 16 18:26:47 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (VALUE): use unsigned long or long long
-	  instead of uintptr_t, since many %lx and so on are still used.
-
-Fri Jan 16 17:33:59 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (Makefile): set VCS and VCSUP to support `git svn'
-	  and git.
-
-	* Makefile.in, win32/Makefile.sub (up): split from common.mk.
-
-Fri Jan 16 12:24:39 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (thread_start_func_2): call ruby_cleanup() if thread is
-	  main thread.  [ruby-dev:37624]
-
-Fri Jan 16 12:27:50 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub ($(INSNS), node_name.inc, known_errors.inc,
-	  miniprelude.c, newline.c): if dependencies is newer than targets or
-	  targets don't exist, try to create targets with BASERUBY. no need to
-	  detect errors there because the absence of BASERUBY is not abnormal.
-	  after the try, if the targets still don't exist, copy them from
-	  $(srcdir).
-
-Fri Jan 16 12:15:07 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/ruby.h (PRI_PTRDIFF_PREFIX): must define as string.
-	  if not, cause compile error in using PRI?VALUE.
-
-	* win32/Makefile.sub (config.h): add SIZEOF_INTPTR_T and
-	  SIZEOF_UINTPTR_T for SIZEOF_VALUE.
-
-Fri Jan 16 11:51:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* symbian/pre-build (COMSPEC): should not overridden.
-
-Fri Jan 16 11:47:56 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_parse_in_main): fixed typo.
-
-Fri Jan 16 11:41:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_REPLACE_TYPE): does not define rb_ prefixed
-	  name if no default type is given.
-
-	* configure.in (RUBY_DEFINT): checks size.
-
-	* include/ruby/ruby.h (PRI_PTRDIFF_PREFIX, PRI_SIZE_PREFIX):
-	  assumes usable if PRIdPTR is defined.
-
-Fri Jan 16 02:25:46 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_thread_execute_interrupts): if signal is already
-	  buffered, main thread should wait until timer thread delivers it.
-
-	* thread.c (timer_thread_function): should defer delivery of a signal
-	  if main thread does not yet trap a previous one.  [ruby-dev:37676]
-
-Fri Jan 16 02:05:55 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (addrinfo_s_ip): new method AddrInfo.ip.
-
-Fri Jan 16 01:42:50 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (call_trace_proc): as Matz said ([ruby-core:21183]),
-	  should skip rb_str_new2() if rb_sourcefile() returns NULL.
-	  rb_sourcefile() returns NULL if frame is toplevel of Fiber.
-	  [ruby-core:21161] [Bug #985]
-
-Fri Jan 16 01:09:37 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.c (process_options): decrement parse_in_eval to recognize
-	  parsing main or normal eval script.
-
-	* compile.c (rb_parse_in_main): return 1 if parsing main script.
-	 (if parse_in_eval is negative value, it means main script)
-
-	* parse.y (yycompile0): check rb_parse_in_main() to accumulate
-	  script text.  Bug #848 [ruby-core:20450]
-
-Fri Jan 16 00:57:34 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* lib/debug.rb: as wanabe-san pointed out,
-	  set_trace_func should be completely final task in debug.rb.
-	  Bug #847 [ruby-core:20449]
-
-Fri Jan 16 00:27:03 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (rb_vm_inc_const_missing_count, ruby_vm_const_missing_count):
-	  added.
-
-	* vm_insnhelper.h: ditto.
-
-	* variable.c (rb_const_get_0), insns.def: Constants should not be
-	  cached if const_missing is called.  [ruby-core:21059] [Bug #967]
-
-	* bootstraptest/test_class.rb: add a test.
-
-Fri Jan 16 00:25:09 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: btest-ruby should receive option with OPTS.
-
-Fri Jan 16 00:21:10 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub ($(INSNS), node_name.inc, known_errors.inc,
-	  miniprelude.c, newline.c): shouldn't copy when $(srcdir) != ".", too.
-	  (this is a workaround.  we need more strict check.)
-
-	* win32/Makefile.sub ($(INSNS)): shouldn't remove BASERUBY.
-
-Fri Jan 16 00:19:55 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (gc_with_gvl): suppress warnings.
-
-Thu Jan 15 20:44:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* tool/file2lastrev.rb: RUBY_REVISION must be an integer.
-
-Thu Jan 15 15:55:31 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (enc_set_default_encoding): should not treat US-ASCII
-	  special here.  a patch from Yui NARUSE in [ruby-dev:37769].
-	  [ruby-dev:37699]
-
-Thu Jan 15 14:27:27 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* LEGAL: Added information for missing/langinfo.c
-
-Thu Jan 15 14:17:57 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (stmt): explicit error for "Object::Far += foo 1" just
-	  as "Object::Far += 1".
-
-	* parse.y (command): moved return/break/next from command_call for
-	  better error message.
-
-	* parse.y (call_args): void value check added.
-
-Thu Jan 15 13:10:58 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (COMPILERFLAG): for enc/trans/gb18030.c.
-
-Thu Jan 15 13:10:09 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, win32/Makefile.sub (MISSING): added langinfo on mingw
-	  and mswin.
-
-	* encoding.c (rb_locale_charmap): use environments on mingw and mswin.
-
-	* missing/langinfo.c (nl_langinfo_codeset): MS-Windows Japanese
-	  environment uses Windows-31J derived from Shift_JIS, not EUC-JP.
-
-Thu Jan 15 12:10:39 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub ($(INSNS), node_name.inc, known_errors.inc,
-	  miniprelude.c, newline.c): copy only when $(srcdir) != pwd.
-
-Thu Jan 15 11:40:44 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (pipe_open): revert a part of previous commit. it may be a
-	  mistake.
-
-Thu Jan 15 10:45:52 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* symbian/README.SYMBIAN: symbian support added.  great appreciate
-	  to <alexandre.zavorine at symbian.com>.
-
-Thu Jan 15 00:06:12 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/gb18030.trans: get rid of a 1.9 feature for cross
-	  compile.  [ruby-core:21345]
-
-Wed Jan 14 23:57:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_locale_charmap): fallback to codepage if no
-	  locale is found.  [ruby-core:21110]
-
-	* missing/langinfo.c (nl_langinfo_codeset): returns NULL if no
-	  locale is found.
-
-Wed Jan 14 22:38:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (negative_size_allocation_error_with_gvl): abolish a warning.
-	  (negative_size_allocation_error): ditto.
-
-	* ext/openssl/ossl.c (ossl_raise): ditto.
-
-Wed Jan 14 20:05:05 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/gb18030.trans, gb18030-tbl.rb:
-	  new Chinese GB18030 transcoding (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-	* transcode_data.h, transcode.c, tool/transcode_tblgen.rb:
-	  added support for GB18030-specific 4-byte sequences
-	  (with Yoshihiro Kambayashi)
-
-Wed Jan 14 16:16:19 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/extconf.rb: check ncursesw earlier than ncurses to
-	  support UTF-8 strings.  non UTF-8 strings should be converted
-	  explicitly.  [ruby-core:21094]
-
-Wed Jan 14 14:42:30 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* cont.c: fix prototype declare of register_stack_extend
-
-Wed Jan 14 13:19:21 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_aspawn): should not escape with caret
-	  unless using cmd.exe.
-
-Wed Jan 14 13:09:00 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/extconf.rb (gai_strerror): checks if available and if
-	  returns const pointer.
-
-	* ext/socket/getaddrinfo.c (gai_strerror): defines only if non
-	  available.  [ruby-core:21328]
-
-Wed Jan 14 12:39:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_wait_readable, rb_io_wait_writable): need rb_fd_ptr.
-
-	* io.c (appendline): reformed.
-
-	* io.c (rb_io_s_pipe): reduced nest of rb_ensure of main block.
-
-Tue Jan 13 22:56:57 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/addrinfo.h (AI_NUMERICSERV): defined.
-	  (AI_MASK): add AI_NUMERICSERV.
-
-	* ext/socket/getaddrinfo.c (getaddrinfo): support AI_NUMERICSERV.
-
-Tue Jan 13 21:45:53 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/ostruct.rb (OpenStruct#inspect): fixed the recursion check.
-	  Patch by Kornelius Kalnbach.  [ruby-core:20992].
-
-	* test/ostruct/test_ostruct.rb: test for inspect.
-	  Patch by Kornelius Kalnbach.  [ruby-core:20992].
-
-Tue Jan 13 21:44:30 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_reopen, rb_io_init_copy): should register fptr to pipe_list
-	  when copying pipe fptr.
-
-Tue Jan 13 21:38:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (rb_getaddrinfo): use getaddrinfo with GVL if
-	  getaddrinfo.c/getnameinfo.c is used.  They are not thread safe
-	  because gethostbyname/gethostbyaddr is used.
-	  (rb_getnameinfo): ditto.
-
-	* extconf.rb: define GETADDRINFO_EMU if getaddrinfo.c/getnameinfo.c is
-	  used.
-
-Tue Jan 13 21:28:14 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* object.c (rb_obj_not_match): rdoc.
-	  Patch by Kornelius Kalnbach.  [ruby-core:20991]
-
-Tue Jan 13 18:21:44 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_close_read): call rb_io_fptr_cleanup() instead of
-	  fptr_finalize() because the fptr has special finalizer if it is a
-	  pipe.  [ruby-dev:37757] (3)
-
-Tue Jan 13 18:19:49 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_initialize): workaround for Windows. [ruby-dev:37686]
-	  (also see [ruby-dev:37721])
-
-Tue Jan 13 17:29:02 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/make_transdb.rb (converters): should not depend on the
-	  hash order for cross compile.
-
-Tue Jan 13 16:39:11 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/intern.h, thread.c, win32/Makefile.sub (rb_fdset_t,
-	  rb_fd_init, rb_fd_term, rb_fd_zero, rb_fd_set, rb_fd_clr, rb_fd_isset,
-	  rb_fd_select, rb_fd_ptr, rb_fd_max, HAVE_RB_FD_INIT): new type,
-	  functions, and macros for Windows.
-
-	* win32/win32.c (extract_fd, rb_w32_select): use rb_fdset_t to expand
-	  fd_array if needed.  [ruby-core:19946]
-
-	* win32/win32.c (copy_fd): new function for rb_w32_select().
-
-Tue Jan 13 12:31:54 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/file2lastrev.rb (get_revisions): fixes problem with
-	  svn on cygwin. [ruby-dev:37702].
-	  Patch by Kouhei Sutou.
-
-Tue Jan 13 11:58:04 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/input-method.rb: IRB did not prompt for MSwin32.
-	  [ruby-dev:37686].
-	  Patch by arton <artonx AT yahoo.co.jp>.
-
-Tue Jan 13 12:10:42 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/{getaddrinfo,getnameinfo}.c: need to include ws2tcpip.h
-	  on Windows.
-
-Tue Jan 13 09:49:49 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* ext/socket/socket.c: removed warning about unused variable 'rai'.
-
-Tue Jan 13 03:07:28 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* instruby.rb: require "tool/mdoc2man.rb" before chdir if needed.
-
-Tue Jan 13 02:54:54 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/extconf.rb: use headers instead of "netdb.h" in checking
-	  getnameinfo() and getaddrinfo() because Windows doesn't have it.
-	  [ruby-dev:37757] (1)
-
-	* ext/socket/sockport.h (SA_LEN): use sockaddr_in6 when defined AF_INET6
-	  if INET6 is not defined.  winsock2's getaddrinfo() returns
-	  sockaddr_in6 if ipv6 is available.
-
-Tue Jan 13 02:21:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (internal_cmd_match): extracted from
-	  is_internal_cmd.
-
-	* win32/win32.c (argv_size, join_argv): escapes redirection, pipe
-	  and caret punctuations with carets.
-
-	* win32/win32.c (rb_w32_aspawn): ditto, and redirections and pipe
-	  have no meanings.
-
-Tue Jan 13 02:07:38 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: use Encoding.find("locale") instead of
-	  Encoding.locale_charmap
-
-Tue Jan 13 00:57:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_s_unpack_sockaddr_in): check too short
-	  sockaddr.
-	  (sock_s_unpack_sockaddr_un): ditto.
-
-Mon Jan 12 23:55:19 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (addrinfo_ip_unpack): new method
-	  AddrInfo#ip_unpack.
-	  (addrinfo_unix_path): new method AddrInfo#unix_path.
-	  (Init_socket): define above methods.
-
-Mon Jan 12 23:31:42 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (IS_IP_FAMILY): defined.
-	  (addrinfo_ip_p): use it.
-
-Mon Jan 12 17:23:05 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (assert_nothing_raised): removes the
-	  current trace to get rid of an issue of MiniTest::Unit#location.
-
-Mon Jan 12 16:49:20 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (install): erased a garbage.
-
-Mon Jan 12 16:45:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (open_dir_handle): extracted from rb_w32_opendir.
-
-	* win32/win32.c (winnt_stat): gets rid of strange behavior of
-	  GetFileAttributes().  [ruby-core:21269]
-
-Mon Jan 12 12:43:55 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (parse_args, install): added --strip option.
-
-	* instruby.rb (install_recursive): skips the directory if matched
-	  to a no_install pattern ending with a file separator.
-
-Mon Jan 12 12:33:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: don't use bytesize because 1.9 dependent.
-	  [ruby-core:21266]
-
-Mon Jan 12 11:59:19 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (ruby_xmalloc, ruby_xrealloc, ruby_xfree):
-	  enable to use them without GVL.
-	  if GC is invoked, acquire GVL during GC.
-	  if NoMemoryError is raised, acquire GVL and raise it.
-
-Mon Jan 12 10:39:19 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c: fix comment (terminology: Global VM Lock).
-
-	* thread.c (blocking_region_begin, blocking_region_end):
-	  save and clear th->blocking_region_buffer.
-
-	* thread.c (rb_thread_call_with_gvl): check if it has GVL.
-
-	* thread.c (ruby_thread_has_gvl_p): added.
-
-	* vm_core.h: add decls.
-
-Mon Jan 12 10:21:11 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c: remove unused decl.
-
-Sun Jan 11 16:53:14 2009  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb (PercentScanner): remove PercentScanner. fixed % after
-	  %> bug. [ruby-dev:37751] [Bug #997]
-
-	* test/erb/test_erb.rb: ditto
-
-Sun Jan 11 09:53:01 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/mkconstants.rb (c_str): get rid of a 1.9 feature for
-	  cross compile.  [ruby-core:21243]
-
-Sun Jan 11 09:47:30 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_s_create): set nil as the value if assoc length
-	  is not enough.  [ruby-core:21249]
-
-Sat Jan 10 21:17:28 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: don't generate unintended newlines.
-
-Sat Jan 10 20:50:02 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: refactored to nest properly in statically
-	  and dynamically.
-
-Sat Jan 10 20:26:17 2009  Tanaka Akira  <akr@fsij.org>
-
-	* version.h: make version string succinct:
-	  "ruby 1.9.1p5000 (2009-01-10 trunk 21414) [i686-linux]".
-
-Sat Jan 10 19:05:13 2009  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (cont_restore_1): should not be inlined.
-
-Fri Jan  9 21:52:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_define_const): use INT2NUM.
-
-Fri Jan  9 15:40:07 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/mkconstants.rb: define macro if default_value is passed.
-
-Fri Jan  9 13:20:08 2009  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: rescue abnormal Encoding.locale_charmap value.
-
-Fri Jan  9 12:29:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (test-sample), rubytest.rb: use runruby.rb
-
-Fri Jan  9 10:40:52 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_process.rb (TestProcess::MANDATORY_ENVS): some
-	  platforms need environments for shared objects.
-
-Thu Jan  8 23:19:38 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (bsock_shutdown): accept symbol/string as how.
-	  (shutdown_how_arg): new function.
-
-	* ext/socket/mkconstants.rb: generate shutdown_how_to_int.
-
-Thu Jan  8 23:16:37 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* instruby.rb: easy code contains fewer bugs.
-
-Thu Jan  8 22:59:30 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb (gen_name_to_int_func): generate
-	  name_to_int functions, not only body.
-
-Thu Jan  8 22:44:10 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c: don't use AI_NUMERICSERV for platforms which
-	  not define it as old Windows.
-	  [ruby-dev:37736]
-
-Thu Jan  8 17:32:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb: should not depend on a library which does not exist
-	  in 1.8.
-
-Thu Jan  8 07:52:55 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (init_unix_addrinfo): don't return a value.
-
-Thu Jan  8 07:30:52 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI.redirectable?): reverted https redirection.
-
-Thu Jan  8 00:31:58 2009  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb (assert_no_match): don't count up as two
-	  assertions.
-
-Thu Jan  8 00:26:35 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (addrinfo_getnameinfo): use NI_DGRAM if socktype
-	  is SOCK_DGRAM.
-
-Thu Jan  8 00:16:22 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (host_str): add flags_ptr argument to specify
-	  AI_NUMERICHOST if host is numeric form.
-	  (port_str): add flags_ptr argument to specify AI_NUMERICSERV if port
-	  is numeric form.
-
-Wed Jan  7 22:24:12 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (rb_cAddrInfo): new class AddrInfo.
-	  (s_recvfrom): return AddrInfo as address.
-	  (s_recvfrom_nonblock): ditto.
-	  (sock_accept): ditto.
-	  (sock_accept_nonblock): ditto.
-	  (sock_sysaccept): ditto.
-	  (bsock_send): accept AddrInfo as address argument.
-	  (sock_connect): ditto.
-	  (sock_connect_nonblock): ditto.
-	  (sock_bind): ditto.
-	  (sock_s_unpack_sockaddr_in): ditto.
-	  (sock_s_unpack_sockaddr_un): ditto.
-	  (bsock_local_address): new method BasicSocket#local_address.
-	  (bsock_remote_address): new method BasicSocket#remote_address.
-	  (addrinfo_initialize): new method AddrInfo#initialize.
-	  (addrinfo_inspect): new method AddrInfo#inspect.
-	  (addrinfo_afamily): new method AddrInfo#afamily.
-	  (addrinfo_pfamily): new method AddrInfo#pfamily.
-	  (addrinfo_socktype): new method AddrInfo#socktype.
-	  (addrinfo_protocol): new method AddrInfo#protocol.
-	  (addrinfo_to_sockaddr): new method AddrInfo#to_sockaddr.
-	  (addrinfo_canonname): new method AddrInfo#canonname.
-	  (addrinfo_ip_p): new method AddrInfo#ip?.
-	  (addrinfo_ipv4_p): new method AddrInfo#ipv4?.
-	  (addrinfo_ipv6_p): new method AddrInfo#ipv6?.
-	  (addrinfo_unix_p): new method AddrInfo#unix?.
-	  (addrinfo_getnameinfo): new method AddrInfo#getnameinfo.
-	  (addrinfo_s_getaddrinfo): new method AddrInfo.getaddrinfo.
-	  (addrinfo_s_tcp): new method AddrInfo.tcp.
-	  (addrinfo_s_udp): new method AddrInfo.udp.
-	  (addrinfo_s_unix): new method AddrInfo.unix.
-	  (Init_socket): define new class and methods.
-	  (sock_getaddrinfo): apply socktype hack regardless of ai_flags.
-	  (addrinfo_new): defined.
-	  (get_afamily): ditto.
-	  (fd_socket_addrinfo): ditto.
-	  (io_socket_addrinfo): ditto.
-	  (SockAddrStringValue): ditto.
-	  (SockAddrStringValuePtr): ditto.
-	  (sockaddr_string_value): ditto.
-	  (sockaddr_string_value_ptr): ditto.
-	  (rb_addrinfo_t): ditto.
-	  (addrinfo_mark): ditto.
-	  (addrinfo_free): ditto.
-	  (addrinfo_s_allocate): ditto.
-	  (IS_ADDRINFO): ditto.
-	  (check_addrinfo): ditto.
-	  (get_addrinfo): ditto.
-	  (alloc_addrinfo): ditto.
-	  (init_addrinfo): ditto.
-	  (addrinfo_new): ditto.
-	  (call_getaddrinfo): ditto.
-	  (init_addrinfo_getaddrinfo): ditto.
-	  (make_inspectname): ditto.
-	  (addrinfo_firstonly_new): ditto.
-	  (addrinfo_list_new): ditto.
-	  (init_unix_addrinfo): ditto.
-	  (ai_get_afamily): ditto.
-
-	* ext/socket/mkconstants.rb: generate intern_protocol_family,
-	  intern_socktype and intern_ipproto.
-
-	  [ruby-dev:37692]
-
-Wed Jan  7 22:13:03 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (man, gem): fixed errors.
-
-Wed Jan  7 17:14:40 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb: use installed libraries.  [ruby-core:21006]
-
-	* instruby.rb (gem), lib/rubygems/defaults.rb (Gem.default_dir):
-	  use version invariant configuration.
-
-Tue Jan  6 19:09:51 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (cont_restore_0): streamlined to ensure O(1) time.  based on
-	  a patch by Brent Roman <brent AT mbari.org>.
-
-Tue Jan  6 00:34:25 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_close_before_exec): more heuristics to detect maximum fd.
-
-Mon Jan  5 17:59:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (cygwin): needs properly implemented nl_langinfo().
-	  [ruby-core:21110]
-
-	* missing/langinfo.c: added as suggested at [ruby-core:21015], from
-	  http://www.cl.cam.ac.uk/~mgk25/ucs/langinfo.c.
-
-	* missing/langinfo.c (nl_langinfo_0): fixed typos for SJIS.
-
-Mon Jan  5 17:38:40 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (rb_locale_charmap): use GetConsoleCP() instead of
-	  GetACP() because external encoding should be console's one.
-
-	* encoding.c (rb_filesystem_encoding): use GetOEMCP() instead of
-	  GetACP() because VFAT/FAT32 uses OEM CP.
-
-Mon Jan  5 16:26:48 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding): use ANSI codepage for file
-	  system on cygwin.
-
-	* encoding.c (rb_locale_charmap): reverted.  [ruby-core:21110]
-
-Mon Jan  5 16:15:00 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/curses/curses.c (free_window): use xfree instead of free.
-	  [ruby-dev:37200]
-
-Mon Jan  5 15:49:45 2009  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/gdbm/gdbm.c (rb_gdbm_fetch): remove needless cast.
-
-Mon Jan  5 12:52:08 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (init_env): use user profile folder than personal
-	  folder.
-
-Mon Jan  5 08:41:13 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_s_stat): need type check for non string values.
-	  [ruby-dev:37673]  fix: #964
-
-	* file.c (rb_file_s_size, rb_file_s_atime, rb_file_s_mtime,
-	  rb_file_s_ctime, rb_f_test): ditto.
-
-Mon Jan  5 08:17:56 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): should not add up errors on loops.
-	  [ruby-dev:37691]
-
-Mon Jan  5 07:58:37 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* random.c (rb_f_srand): update RDoc.  [ruby-core:21113]
-
-Mon Jan  5 06:39:56 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_max): max value from ... not defined for non
-	  Integer Numeric end values. [ruby-dev:37690] fix: #974
-
-Sun Jan  4 22:37:19 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (rb_getaddrinfo): defined for address lookup without GVL.
-	  (struct getaddrinfo_arg): defined.
-	  (nogvl_getaddrinfo): defined.
-	  (rb_getnameinfo): defined for name lookup without GVL.
-	  (getnameinfo_arg): defined.
-	  (nogvl_getnameinfo): defined.
-
-Sun Jan  4 18:10:10 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/gbk.trans, gbk-tbl.rb:
-	  new Chinese GBK transcoding (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-Sun Jan  4 17:55:55 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: added tests for GB2312
-	  (from Yoshihiro Kambayashi)
-
-	* enc/trans/chinese.trans: set valid byte patterns for
-	  GB2312 and GB12345
-
-Sun Jan  4 17:39:39 2009  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/big5.trans, big5-tbl.rb:
-	  new Chinese Big5 transcoding (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-Sun Jan  4 17:07:45 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems.rb (Gem.set_home, Gem.set_paths): should not create
-	  directories stealthily.  [ruby-core:20990]
-
-	* lib/rubygems.rb (Gem.find_home): expand_path deals with platform
-	  dependent environments.
-
-	* lib/rdoc/ri/paths.rb (RDoc::HOMEDIR): ditto.
-
-	* instruby.rb (gem): creates gem directories at installation.
-
-Sun Jan  4 15:41:37 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding, rb_locale_charmap): uses
-	  codepage on cygwin.  [ruby-core:20994]
-
-Sun Jan  4 11:58:43 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (ruby_float_step): extracted from num_step().
-
-	* range.c (range_step): uses ruby_float_step() for float range.
-	  [ruby-dev:37691]
-
-Sun Jan  4 11:11:31 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): does not use both of makefile.rb and
-	  extconf.rb at the same time.
-
-	* lib/mkmf.rb (DLLIB): depends on Makefile.  [ruby-core:21096]
-
-Sun Jan  4 09:27:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (constant_arg): constified.
-
-	* ext/socket/socket.c (optname_arg): cygwin does not have
-	  IPPROTO_IPV6.
-
-	* ext/socket/mkconstants.rb (ipv6_optname_to_int): ditto.
-
-Sun Jan  4 04:33:14 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c: redundant #ifdef removed.
-
-Sun Jan  4 03:30:18 2009  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (maygvl_copy_stream_wait_read): renamed to add prefix to
-	  express GVL state.
-	  (nogvl_copy_stream_wait_write): ditto.
-	  (nogvl_copy_stream_sendfile): ditto.
-	  (maygvl_copy_stream_read): ditto.
-	  (nogvl_copy_stream_write): ditto.
-	  (nogvl_copy_stream_read_write): ditto.
-	  (nogvl_copy_stream_func): ditto.
-
-Sun Jan  4 00:30:50 2009  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb: merged r20850, r17881, r16811, r16763, r16748, r15829,
-	  r15794 and r15698 from ruby_1_8.
-
-	* test/erb/test_erb.rb: ditto.
-
-Sat Jan  3 22:24:36 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk, Makefile.in, win32/Makefile.sub (INSNS): move the macro
-	  definition from common.mk to {Makefile.in,win32/Makefile.sub}.
-	  [ruby-dev:37678]
-
-Sat Jan  3 15:30:09 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/chinese.trans: added for transcoding EUC-CN and GB12345.
-
-	* enc/trans/GB/: ditto.
-
-Sat Jan  3 15:26:30 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/euc-cn.c: renamed from gb2312.c because GB2312 is
-	  the name of a CSS.  it's encoding name is "EUC-CN".
-
-Sat Jan  3 03:00:42 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk, Makefile.in, win32/Makefile.sub ($(INSNS), node_name.inc,
-	  known_errors.inc, miniprelude.c, newline.c): move rules from common.mk
-	  to {Makefile.in,win32/Makefile.sub} for nmake.
-	  [ruby-core:20993]
-
-Fri Jan  2 23:51:41 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_sleep.rb (test_sleep_5sec): stop gc.
-
-Fri Jan  2 23:36:10 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c: don't apply socktype hack [ruby-core:184] for
-	  sock_s_getaddrinfo.
-	  (sock_getaddrinfo): add socktype_hack argument.
-	  (sock_addrinfo): call sock_getaddrinfo with socktype_hack.
-	  (sock_s_getaddrinfo): call sock_getaddrinfo without socktype_hack.
-	  [ruby-dev:37674]
-
-Fri Jan  2 23:33:38 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/missing.h, sprintf.c: get rid of a warning of VC++.
-
-Fri Jan  2 22:25:46 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* process.c: use sigaction instead of sigset.  [ruby-core:21021]
-
-Fri Jan  2 22:22:04 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bootstraptest/test_proc.rb: suppress error message.
-
-Fri Jan  2 22:20:46 2009  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_process.rb (test_wait_and_sigchild): remove debug
-	  output.
-
-Fri Jan  2 17:45:19 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: rename family_to_str to intern_family.
-	  it returns ID now.
-
-	* ext/socket/socket.c (ipaddr): use intern_family.
-
-Fri Jan  2 17:20:31 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: use ID in the values of
-	  family_to_str_hash.  family_to_str returns a VALUE.
-
-	* ext/socket/socket.c (ipaddr): follow family_to_str change.
-
-Fri Jan  2 17:01:51 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: refactored to gather stringizer
-	  description.
-
-Fri Jan  2 15:30:57 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: make common prefix optional.
-
-Fri Jan  2 14:59:52 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: use hash for family_to_str to avoid
-	  linear search.  lenp argument removed.
-
-	* ext/socket/socket.c (ipaddr): call family_to_str without lenp
-	  argument.
-
-Fri Jan  2 14:33:12 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb (gen_int_to_name): don't compare constants
-	  in preprocessor because the constants may be enum.
-
-Fri Jan  2 14:11:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb (gen_int_to_name): add lenp argument.
-
-	* ext/socket/socket.c (ipaddr): follow argument change.
-
-Fri Jan  2 10:20:24 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/singleton.rb: fix documentation. [ruby-core:21038]
-
-Fri Jan  2 06:43:58 2009  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* signal.c (rb_signal_buff_size): defined for check whether signal
-	  is in the buffer or not.
-
-	* thread_pthread.c (thread_timer): don't exit the loop when signal
-	  is in the buffer. [ruby-dev:37637]
-
-Fri Jan  2 04:40:00 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: check duplicates.
-
-Fri Jan  2 02:39:08 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (optname_arg): defined.
-	  (bsock_setsockopt): use optname_arg.
-	  (bsock_getsockopt): ditto.
-
-	* ext/socket/mkconstants.rb: generate so_optname_to_int,
-	  ip_optname_to_int, ipv6_optname_to_int, tcp_optname_to_int and
-	  udp_optname_to_int.
-	  more constants.
-
-Fri Jan  2 02:08:36 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (constant_arg): extracted from family_arg.
-	  (family_arg): use constant_arg.
-	  (socktype_arg): ditto.
-	  (level_arg): ditto.
-
-Fri Jan  2 01:15:11 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (level_arg): defined.
-	  (bsock_setsockopt): use level_arg.
-	  (bsock_getsockopt): ditto.
-
-	* ext/socket/mkconstants.rb: generate level_to_int.
-
-Fri Jan  2 00:58:40 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (family_arg): accept symbols as well.
-	  (socktype_arg): ditto.
-
-Fri Jan  2 00:49:44 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_s_getaddrinfo): use socktype_arg.
-
-Fri Jan  2 00:12:27 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (family_arg): extracted from
-	  setup_domain_and_type.
-	  (socktype_arg): ditto.
-	  (udp_init): use family_arg.
-	  (sock_s_gethostbyaddr): ditto.
-	  (sock_s_getaddrinfo): ditto.
-	  (sock_s_getnameinfo): ditto.
-
-Thu Jan  1 22:27:55 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec: fix for builddir != srcdir
-
-	* Makefile.in: ditto.
-
-Thu Jan  1 21:26:05 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_s_getnameinfo): use family_to_int.
-
-Thu Jan  1 21:08:34 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: check all alias possibility.
-
-Thu Jan  1 20:59:55 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: more possible aliases.
-
-Thu Jan  1 20:54:02 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: AF_ISO and AF_OSI may be aliased.
-
-Thu Jan  1 20:50:09 2009  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* process.c (before_exec): it makes no sense for a conditional
-	  expression to return a void value.
-
-Thu Jan  1 20:47:09 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_s_getaddrinfo): use family_to_int.
-
-Thu Jan  1 20:17:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c: include constants.h at top.
-
-Thu Jan  1 19:53:33 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: add valp argument for family_to_int and
-	  socktype_to_int.
-
-	* ext/socket/socket.c (setup_domain_and_type): use valp argument.
-
-Thu Jan  1 19:36:57 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: generate family_to_str.
-
-	* ext/socket/socket.c (ipaddr): use family_to_str.
-
-Thu Jan  1 17:37:12 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: generate socktype_to_int.
-
-	* ext/socket/socket.c (setup_domain_and_type): use socktype_to_int.
-
-Thu Jan  1 17:26:47 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (setup_domain_and_type): initialize ptr.
-
-Thu Jan  1 17:01:50 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: refine family_to_int.
-
-Thu Jan  1 16:48:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: generate family_to_int().
-
-	* ext/socket/socket.c (setup_domain_and_type): use family_to_int.
-
-Thu Jan  1 15:08:46 2009  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/file2lastrev.rb: supports git repositories which are cloned
-	  from a git-svn gateway.
-	  Patch by Hongli Lai. [ruby-core:21020]
-
-Thu Jan  1 16:08:11 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: generate init_constants function.
-
-	* ext/socket/socket.c (Init_socket): call init_constants.
-
-Thu Jan  1 16:03:04 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb (Socket::AF_INET6): moved from socket.c.
-	  (Socket::PF_INET6): ditto.
-
-Thu Jan  1 15:27:07 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: use erb.
-
-Thu Jan  1 15:07:56 2009  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: add -o option.
-
-	* ext/socket/depend: use mkconstants.rb with -o option.
-
-Thu Jan  1 07:42:36 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/singleton.rb: fix indentation of RDoc text.  [ruby-core:21029]
-
-Thu Jan  1 07:16:44 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (distclean-ext, realclean-ext): use EXTS as default.
-
-	* win32/Makefile.sub (distclean-ext, realclean-ext): try to remove ext
-	  directory.
-
-Thu Jan  1 06:56:28 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/file2lastrev.rb: unset PWD.
-
-Wed Dec 31 23:37:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_s_socketpair): yield if a block is given.
-	  (io_call_close): defined.
-	  (io_close): defined.
-	  (pair_yield): defined.
-
-Wed Dec 31 19:35:57 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/README: follows the change of directory structure in rubyspec.
-
-	* spec/default.mspec: ditto. Also follows change of mspec command.
-
-	* Makefile.in: ditto.
-
-Wed Dec 31 17:16:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_read_internal): show openssl error
-	  code in EWOULDBLOCK error.
-
-Wed Dec 31 15:45:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_body): don't check to_io because
-	  Zlib::GzipWriter#to_io returns the underlying IO.
-
-Wed Dec 31 14:52:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_digest.c (GetDigestPtr): use StringValueCStr
-	  instead of STR2CSTR.
-
-	* ext/openssl/ossl_pkey_ec.c (ossl_ec_key_initialize): ditto.
-	  (ossl_ec_group_initialize): ditto.
-
-Wed Dec 31 14:12:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_to_float): replaced by to_flo definition from
-	  math.c  [ruby-dev:37668]
-
-	* math.c (Need_Float): use rb_to_float().
-
-Wed Dec 31 13:49:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/lib/openssl/buffering.rb (Buffering#read_nonblock):
-	  implemented.
-
-	* ext/openssl/ossl_ssl.c (rb_sys_fail_path): removed.
-	  (fcntl.h): don't include.
-	  (ossl_ssl_read_internal): defined.
-	  (ossl_ssl_read): use ossl_ssl_read_internal.
-	  (ossl_ssl_read_nonblock): use ossl_ssl_read_internal.
-	  (Init_ossl_ssl): define sysread_nonblock, instead of read_nonblock.
-
-Wed Dec 31 00:27:54 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_to_float): prohibit conversion from nil to float.
-	  [ruby-dev:37663]
-
-	* pack.c (pack_pack): replace all rb_Float() to rb_to_float().
-	  [ruby-dev:37663]
-
-Tue Dec 30 21:17:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/mkconstants.rb: use sock_define_uconst for INADDR_*
-	  constants because Socket::INADDR_LOOPBACK should be 0x7f000001
-	  instead of -0xffffff.
-
-	* ext/socket/socket.c (sock_define_uconst): defined.
-
-Tue Dec 30 18:23:10 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.3.1 r4506.
-	* test/minitest/*.rb: ditto.
-
-Tue Dec 30 17:59:59 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: Minor fixes and tweaks in documentation.
-
-Tue Dec 30 17:03:51 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/dl/test/test_import.rb: fix a prototype decl.
-	  pointed out by Takehiro Kubo [ruby-core:20971].
-
-Tue Dec 30 16:56:09 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_blocking_region): add a comment.
-
-	* thread.c (rb_thread_call_without_gvl): added as a alias of
-	  rb_thread_blocking_region().
-
-	* thread.c (rb_thread_call_with_gvl): added.
-
-	* vm_core.h (rb_thread_t#blocking_region_buffer): added for
-	  rb_thread_call_with_gvl().
-
-Mon Dec 29 23:41:42 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/dl/test/test_base.rb: add libc search logic.
-	  this patch is written by Takehiro Kubo.
-	  [ruby-core:20963] [Bug #932]
-
-	* ext/dl/dl.h: Add ",..." as the last argument.
-	  this patch is written by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-
-	* ext/dl/lib/dl/stack.rb: add add_padding() to calculate
-	  alignment.  this patch is written by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-
-	* ext/dl/test/test_func.rb: atof()'s return value is double.
-	  this patch is written by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-
-	* ext/dl/test/test_import.rb:
-	  - atof()'s return value is double.
-	  - The types of qsort's second and third argument are size_t.
-	  - fprintf()'s return value is int.
-	  this patch is written by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-
-Mon Dec 29 22:37:17 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* process.c (rb_waitpid): retries waitpid when EINTR.
-	  [ruby-core:19744].
-
-Mon Dec 29 23:18:52 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* bignum.c (rb_cstr_to_inum): changed an error message.
-
-	* complex.c (string_to_c_strict): ditto.
-
-	* rational.c (string_to_r_strict): ditto.
-
-Mon Dec 29 22:37:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): template f should not accept non float
-	  values.  [ruby-dev:37656]
-
-	* object.c (rb_to_float): new function to type check floats.
-
-Mon Dec 29 22:27:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* random.c (rb_f_rand): type check simplified.  strings are no
-	  longer allowed for argument.  [ruby-dev:37655]
-
-	* test/ruby/test_rand.rb (TestRand::o.to_int): need override
-	  to_int.
-
-Mon Dec 29 21:22:31 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c: Infinity.numerator returns self. [experimental]
-
-	* numeric.c: Infinity.denominator returns 1. [experimental]
-
-Mon Dec 29 20:57:14 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/ri.1: new manpage.
-
-Mon Dec 29 20:45:25 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: floor, ceil, truncate and round accept an extra
-	  argument like Float#round. [experimental]
-
-Mon Dec 29 18:24:49 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Makefile.in (distclean-local): removes Doxyfile and
-	  run.gdb at distclean'ing.
-
-Mon Dec 29 17:53:24 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* bin/erb: accepts options in more flexible styles.
-
-Mon Dec 29 17:25:17 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/erb.rb (ERB): m17n of ERB. adds rdoc.
-	  fixes #712. c.f. [ruby-dev:37516].
-
-	* lib/erb.rb (ERB::Compiler#compile): recognizes magic comments.
-	  returns a pair of compiled script and its script encoding.
-
-	* lib/erb.rb (ERB#set_eoutvar): make generated scripts return a
-	  string in correct encoding.
-
-	* lib/erb.rb (ERB#def_method): use Kernel#eval for encoding-awareness
-	  of the evaluated string.
-
-	* bin/erb.rb (ERB::Main.run): adds -E and -U options.
-	  String is no longer Enumerable.
-
-	* man/erb.1: new manpage.
-
-	* test/erb/test_erb_m17n.rb: new test case for m17n features.
-
-Mon Dec 29 18:02:45 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/io/wait/wait.c (io_nread): returns number of bytes available
-	  for read.  response to feature request #936 in [ruby-core:20917].
-
-Mon Dec 29 17:52:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/io/wait/wait.c (io_ready_p): updated to follow RDoc.
-
-Mon Dec 29 16:52:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (s_recvfrom_nonblock): revert r21162.
-
-Mon Dec 29 16:16:20 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (vm_set_eval_stack, vm_set_main_stack, vm_set_top_stack):
-	  check stack overflow.  [ruby-dev:37646]
-
-Sun Dec 28 18:36:33 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/rubygems/test_gem_command.rb
-	  (test_add_option_overlapping_common_and_local_options):
-	  follows r21066.
-
-Mon Dec 29 14:50:19 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Makefile.in (ext-clean): ext-clean always fails.
-
-	* ext/dl/ripper/extconf.rb: adds y.output into the clean list.
-
-Mon Dec 29 11:58:39 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_mutex_trylock): return false if Mutex owned
-	  by current thread.  [ruby-core:20943]
-
-	* thread.c (rb_mutex_lock): check dead lock (recursive lock) here.
-
-	* test/ruby/test_thread.rb: add a test.
-
-Mon Dec 29 10:58:54 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (rb_get_path): move encoding conversion of file path
-	  from rb_scan_open_args.
-
-	* io.c (rb_scan_open_args): ditto.
-
-Mon Dec 29 07:15:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* cont.c: small RDoc fix mentioned from <radek.bulat at gmail.com>
-	  in [ruby-core:20921].
-
-Mon Dec 29 03:43:25 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.c (process_options): set th->base_block only while
-	  it is needed.  [ruby-dev:37634] [Bug #939]
-
-	* ruby.c (require_libraries): clear th->base_block before
-	  require libraries.
-
-Sun Dec 28 21:33:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ext/dl/test_base.rb: add BSD's case.
-
-Sun Dec 28 21:09:12 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/dl/lib/dl/import.rb (DL::Importer#sizeof): follows
-	  a feature change in 1.9.
-
-Sun Dec 28 21:03:07 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/dl/lib/dl/import.rb (DL::Importer#extern): adds filename and
-	  line number to module_eval'ing for readability of backtrace.
-	  (DL::Importer#bind): ditto.
-
-	* ext/dl/lib/dl/struct.rb (DL::CStructBuilder#create): ditto.
-
-Sun Dec 28 19:11:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): do not use snprintf/vsnprintf in
-	  msvcrt.
-
-	* sprintf.c: not force to override snprintf/vsnprintf.
-	  [ruby-core:20824]
-
-Sun Dec 28 17:21:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/rubygems/test_ext_configure_builder.rb (test_self_build_fail):
-	  Extends pattern for FreeBSD's error message.
-
-Sun Dec 28 17:10:13 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* ext/dl/test/test_dl2.rb: modify strncpy, strcpy, qsort, types.
-	  Patch by Takehiro Kubo.
-	  Bug #633 [ruby-core:19289]
-	* ext/dl/test/test_base.rb: /lib/libc.so is x86_64 binary in x86_64 architecture.
-
-Sun Dec 28 12:53:10 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* ext/dl/test/test_base.rb: use libc.dylib when the platform is darwin.
-
-Sun Dec 28 12:24:14 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (mutex_free, mutex_unlock): add qualifiers.
-
-Sun Dec 28 10:28:04 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (mutex_free): GC thread (main thread) has failed to unlock
-	  a mutex that is locked by another thread, which makes the mutex
-	  dangling in keeping_mutexes and causes [BUG] or stuck finally.
-	  Now unlocking is performed as locking thread.
-
-	* thread.c (mutex_unlock, rb_mutex_unlock, rb_mutex_unlock_all):
-	  mutex_unlock receives a thread.
-
-Sun Dec 28 05:44:44 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.3.1 r4505.
-	* test/minitest/*.rb: ditto.
-
-Sun Dec 28 00:43:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* runruby.rb: refactored to modify ENV as once.
-
-Sat Dec 27 22:41:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/rdoc/test_rdoc_info_formatting.rb (setup, teardown): uses
-	  mktmpdir and removes it after the test.
-
-	* test/cgi/test_cgi_session.rb (setup, teardown): ditto.
-
-Sat Dec 27 21:46:10 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* ext/dl/test/test_base.rb: use lib64 when the architecture is x86_64.
-
-Sat Dec 27 20:26:59 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_argv_size): if an argument is empty, it's size
-	  is 2, not 0, because it will be converted to "".
-
-Sat Dec 27 19:40:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (after_exec): needs to reset before restart timer
-	  thread.
-
-	* thread.c (thread_start_func_2): stops timer thread if forked in
-	  the new thread.   [ruby-core:19385]
-
-	* thread.c (rb_thread_atfork, rb_thread_atfork_before_exec): DRY.
-
-Sat Dec 27 18:25:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_eval.c (rb_f_loop): return enumerator if no block given.
-	  [ruby-list:45747]
-
-Sat Dec 27 17:08:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* .gdbinit (dummy_gdb_enums.special_consts): forces to load debug
-	  info on Mac OS X.
-
-	* .gdbinit (rp): added T_ZOMBIE.
-
-Sat Dec 27 16:18:02 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_frame_callee, rb_frame_caller): rb_frame_callee()
-	  should return method id on current frame.
-	  add rb_frame_caller() to get method id on parent frame.
-	  Bug #884 [ruby-dev:37446]
-
-	* eval.c (rb_f_method_name): use rb_frame_caller()
-	  instead of rb_frame_callee().
-
-Sat Dec 27 15:28:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): show source and destination
-	  encoding.  [ruby-dev:37285]
-
-Sat Dec 27 15:23:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_yield_with_cfunc): rename parameter name
-	  "blockptr" to "blockargptr".
-
-Sat Dec 27 15:15:56 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (revision.h): ignores failure of file2lastrev.
-
-Sat Dec 27 15:02:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.c (process_options): fix to untouch th->mild_compile_error.
-	  [ruby-dev:37621], [ruby-dev:37620]
-
-Sat Dec 27 14:48:26 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.h, iseq.c (rb_iseq_new_main): add a type ISEQ_TYPE_MAIN.
-	  [ruby-dev:37619]
-
-	* compile.c (rb_dvar_defined, ruby_iseq_compile): ditto.
-
-	* iseq.c (iseq_data_to_ary, iseq_load): ditto.
-
-	* compile.c (iseq_compile_each): fix to check ip->compile_data.
-
-Sat Dec 27 14:29:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI.redirectable?): permit https redirection.
-	  patch from Roman Shterenzon.  [ruby-core:20485]
-
-Sat Dec 27 13:36:55 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (get_errinfo): return th->errinfo value
-	  if normal errinfo place (dynamic local variable) is not found.
-	  fixes Bug #732 [ruby-dev:37046].
-
-	* bootstraptest/test_proc.rb: add a test.
-
-Sat Dec 27 13:10:43 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/irb.1: adds -v, -h, -E and -U.
-
-Sat Dec 27 11:41:45 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_call_method, vm_call_cfunc): use original id instead of
-	  calling id when NODE_CFUNC or NODE_BMETHOD.
-	  fixes Bug #632 [ruby-core:19282].
-
-	* vm_eval.c (vm_call0, vm_call_super): ditto.
-
-	* vm_method.c (rb_add_method, rb_alias): store original id
-	  in nd_file field of NODE_METHOD.
-
-	* test/stringio/test_stringio.rb: add a test.
-
-Sat Dec 27 09:48:54 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (Init_VM): create and define TOPLEVEL_BINDING at first.
-
-	* vm.c (vm_set_main_stack, rb_iseq_eval_main): added.
-
-	* parse.y (rb_parser_compile_file): fix to check parse_in_eval flag.
-
-	* eval.c (ruby_exec_node): use rb_iseq_eval_main()
-	  instead of rb_iseq_eval().
-
-	* iseq.c (rb_iseq_new_main), vm_core.h: added.
-	  main script (specified by -e or script name) should be run
-	  under TOPLEVEL_BINDING using Kernel#eval.  Above changes
-	  simulate Kernel#eval behaviour.  [ruby-dev:37240]
-
-	* compile.c (make_name_for_block): skip iseq except block type.
-	  this fix is needed for [ruby-dev:37240], and also fixes
-	  [ruby-dev:35392].
-
-Sat Dec 27 09:14:17 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* cont.c: rdoc for Fiber. patch by Muhammad Ali.
-	  [ruby-core:20894]
-
-Sat Dec 27 05:38:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (after_fork): ignores a termination request in the
-	  parent process.  [ruby-dev:37447]
-
-Sat Dec 27 01:52:39 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb: Using a more robust transcoding scheme to produce
-	  ASCII compatible inspect() messages.  [ruby-dev:37591]
-
-Fri Dec 26 18:04:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fptr_finalize): don't allocate objects if noraise.
-	  (finish_writeconv): add noalloc argument to be able to avoid
-	  object allocation.
-	  (finish_writeconv_arg): introduced again.
-	  (finish_writeconv_sync): follow the above change.
-
-Fri Dec 26 17:04:14 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/input-method.rb (IRB::StdioInputMethod#initialize):
-	  removed a 'p' for debugging.
-
-Fri Dec 26 15:50:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::List#summarize): gives priority
-	  to latter switches.  [ruby-dev:36692]
-
-	* lib/optparse.rb (OptionParser#summarize): do not append
-	  unnecessary line terminator.
-
-Fri Dec 26 14:01:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fptr_finalize): close the IO object even if finish_writeconv or
-	  flush is failed.
-	  (finish_writeconv): don't raise.  return errno or exception.
-	  (finish_writeconv_arg): removed.
-	  (finish_writeconv_sync): follow finish_writeconv change.
-
-	* transcode.c (rb_econv_make_exception): new function.
-
-	* include/ruby/encoding.h (rb_econv_make_exception): declared.
-
-Thu Dec 25 20:57:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (str_transcode0): set encoding when String#encode was
-	  given explicit but the same destination and source encoding.
-
-Thu Dec 25 20:01:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_s_pipe): unused variable removed.
-
-Thu Dec 25 19:35:51 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (sym_ignore): remove useless symbol.
-
-Thu Dec 25 18:36:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (pipe_close): removed.
-	  (pipe_yield): defined.
-	  (rb_io_s_pipe): use pipe_yield.
-
-Thu Dec 25 17:49:45 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (decorate_convpath): show type of escaping for
-	  xml_attr_quote or some conversions.
-
-Thu Dec 25 17:06:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_initialize): check fd validity.  [ruby-dev:36646]
-
-Thu Dec 25 16:23:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (flush_before_seek): check io_fflush result.
-	  (rb_io_check_readable): ditto.
-	  (rb_io_flush): ditto.
-	  (rb_io_fsync): ditto.
-	  (remain_size): ditto.
-	  (rb_io_write_nonblock): ditto.
-	  (finish_writeconv): ditto.
-	  (fptr_finalize): ditto.
-	  (io_reopen): ditto.
-	  (rb_io_reopen): ditto.
-	  (copy_stream_body): ditto.
-
-Thu Dec 25 15:54:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fflush): flush write buffer without write lock in
-	  finalizers.  [ruby-dev:37572]
-
-	* io.c (rb_io_fptr_finalize): clear write lock before finalizing.
-
-Thu Dec 25 15:07:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fptr_finalize): close the IO object even if close(2) is failed.
-
-Thu Dec 25 14:51:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/parser.rb (RDoc::Parser.binary?): should read in binary mode.
-
-Thu Dec 25 14:32:23 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_method_search): fix control flow bug.
-	  (committed at r20981)
-
-Thu Dec 25 13:28:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_flush): fsync() after buffer is flushed on win32.
-	  [ruby-core:20043]
-
-Thu Dec 25 13:13:00 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_method_search): return rb_cObject if there is no
-	  super class.  [ruby-dev:37587]
-
-	* bootstraptest/test_method.rb: add tests for above.
-
-Thu Dec 25 12:49:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (proc_new): should use proc_dup() if block has Proc.
-
-	* vm.c (vm_make_proc_from_block): should use rb_cProc for block.
-
-	* vm.c (vm_make_proc): add an assertion.
-
-	* bootstraptest/test_proc.rb: add a test.
-
-Thu Dec 25 12:44:27 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_yield_with_cfunc): check block has Proc.
-
-Thu Dec 25 05:53:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* template/id.h.tmpl, id.h (ruby_method_ids): not depend on if
-	  token are defined as macros.  [ruby-dev:37553]
-
-	* template/id.h.tmpl, id.h (ruby_method_ids_check): enclosed in a
-	  struct.
-
-Thu Dec 25 01:52:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): sets native thread key.
-
-Thu Dec 25 01:09:23 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline_history.rb: check the encoding that
-	  is in the Readline::HISTORY.
-
-Thu Dec 25 00:59:06 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline_history.rb: did not check the
-	  encoding that is in the Readline::HISTORY. I will fix it.
-
-Wed Dec 24 22:36:06 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* error.c, vm_dump.c: change message by rb_bug().
-
-Wed Dec 24 21:57:39 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_peephole_optimize): fix typo.
-
-Sun Dec 21 13:38:04 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (invoke_block_from_c): fix to point right cfp.
-
-	* vm.c (vm_make_proc, vm_make_proc_from_block), vm_core.h:
-	  remove unused parameter cfp.
-
-	* vm_insnhelper.c, proc.c (proc_new): ditto.
-
-Wed Dec 24 20:59:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* error.c (exc_equal): == method should not raise Exception.
-	  [ruby-dev:37519]
-
-	* sample/test.rb: fix test.
-
-Wed Dec 24 20:33:45 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_call_method): use class of method defined
-	  instead of receiver's class on bmethod.  fixes [ruby-core:20786]
-
-	* bootstraptest/test_method.rb: add a test for above.
-
-	* vm_insnhelper.c (vm_setup_method): remove unused parameter klass.
-
-	* vm_insnhelper.h (CALL_METHOD): ditto.
-
-	* insns.def, vm_eval.c: ditto.
-
-Wed Dec 24 20:15:50 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/file2lastrev.rb (get_revisions): fix to ignore end of line.
-
-Wed Dec 24 13:33:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (HAVE_LONG_LONG, HAVE_OFF_T): revised for autoconf
-	  2.62 or later.
-
-Wed Dec 24 06:29:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (OBJDUMP, OBJCOPY): autoconf list is not comma
-	  separated.
-
-	* configure.in (AC_HEADER_STDC, AC_CHECK_HEADERS, AC_CHECK_FUNCS):
-	  removed duplicated checks.
-
-Wed Dec 24 03:21:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el: added comment to mention newer version
-	  bundled with Emacs 23 or later.  a patch from Phil Hagelberg
-	  <phil at hagelb.org> in [ruby-core:20838].
-
-Tue Dec 23 23:49:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_init_copy): call io_seek only if io_tell succeeds.
-
-Tue Dec 23 22:57:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rb_fork): don't propagate an error message if error
-	  buffer not given.
-
-Tue Dec 23 21:55:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rb_fork): propagate an error message from child to parent.
-	  (rb_f_exec): show details of error in child process on
-	  exception.
-	  (save_redirect_fd): add error message arguments.
-	  (run_exec_dup2): ditto.
-	  (run_exec_close): ditto.
-	  (run_exec_open): ditto.
-	  (run_exec_dup2_child): ditto.
-	  (run_exec_pgroup): ditto.
-	  (run_exec_rlimit): ditto.
-	  (rb_run_exec_options): ditto.
-	  (rb_exec): ditto.
-	  (rb_exec_atfork): ditto.
-	  (rb_spawn_internal): ditto.
-	  (rb_spawn): ditto.
-	  (rb_f_system): follow arguments change.
-	  (proc_daemon): ditto.
-	  (rb_f_spawn): show details of error in child process on exception.
-
-	* io.c (popen_exec): add error message arguments.
-	  (pipe_open): show details of error in child process on exception.
-
-	* include/ruby/intern.h (rb_run_exec_options): add error message
-	  arguments.
-	  (rb_exec): ditto.
-	  (rb_fork): ditto.
-	  (rb_spawn): ditto.
-
-	* ext/pty/pty.c (chfunc): add error message arguments.
-
-Tue Dec 23 20:28:28 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* io.c: rdoc for File::open and 1.9 feature in file modes.
-
-	* transcode.c: rdoc for String#encode
-
-Tue Dec 23 19:51:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn): deals with quoted commands.
-
-Tue Dec 23 18:44:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* strftime.c (rb_strftime): use locale insensitive functions for tr_TR
-	  locale.
-
-Tue Dec 23 17:38:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb (assert_equal): show small differences
-	  for Regexp and Float.
-
-Tue Dec 23 16:49:48 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn): support normal commands with arguments.
-
-Tue Dec 23 16:22:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_inspect): show fd number if there is no pathname.
-
-Tue Dec 23 15:48:55 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/file2lastrev.rb: shouldn't use single quote in shell's command
-	  line if you want to support Windows.
-
-Tue Dec 23 15:46:43 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/mathn.rb: Math.sqrt(NaN) should be NaN. [ruby-dev:37537]
-
-Tue Dec 23 15:46:47 2008  Eric Hodel  <drbrain@segment7.net>
-	* gem_prelude.rb:  Match full RubyGems behavior when a gem can't be
-	  found.
-
-Tue Dec 23 15:36:58 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/file2lastrev.rb: detects vcs directory properly on building
-	  outside of srcdir. [ruby-dev:37555] [ruby-dev:37561]
-
-Tue Dec 23 15:30:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (pipe_open): need to initialize args.
-
-Tue Dec 23 14:18:14 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/st.h: need to include defines.h because LONG_LONG is
-	  defined there.
-
-Tue Dec 23 13:52:05 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parser/c.rb:  Don't coalesce adjacent comment blocks.
-	  [bug#901]
-
-Tue Dec 23 12:00:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (pipe_close): fix coding style.  [ruby-dev:37554]
-
-Tue Dec 23 08:10:05 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/installer.rb: Fix documentation.  [bug#827]
-
-Tue Dec 23 08:04:58 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb: Don't remove methods twice.  [bug#555]
-
-Tue Dec 23 00:16:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* sprintf.c (rb_str_format): fix buffer overflow.
-
-Mon Dec 22 19:31:19 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (revision.h): uses tool/file2lastrev.rb to support
-	  git-svn.
-
-	* version.h: changed version string as
-	  `ruby 1.9.1 (2008-12-22 patchlevel-5000 trunk 20912)
-	  [i386-darwin9.6.0]'.
-
-Mon Dec 22 16:32:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): encoding of packed string only from 'm',
-	  'M', and 'u' should be US-ASCII.  [ruby-dev:37284]
-
-	* pack.c (pack_pack): encoding of packed string only from 'U'
-	  should be UTF-8.  also upgrade US-ASCII strings to UTF-8.
-
-Mon Dec 22 15:56:49 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Doxyfile.in: new file. Template of a configuration file.
-	  Introduces C-level API reference generation with Doxygen.
-
-	* tool/file2lastrev.rb: wrapper script that abstracts subversion
-	  and git-svn.
-
-	* tool/strip-rdoc.rb: filter for preventing doxygen from processing
-	  rdoc comments.
-
-	* configure.in: (Doxyfile): Doxyfile is generated together with
-	  Makefile.
-	  (PACKAGE): configuration $(PACKAGE) is necessary for $(docdir).
-
-	* instruby.rb: adds a new install target 'capi'
-
-	* common.mk (capi): new target that generates C API documents with
-	  Doxygen.
-	  (install-capi): new target.
-	  (pre-install-capi): ditto.
-	  (do-install-capi): ditto.
-	  (post-install-capi): ditto.
-
-Mon Dec 22 21:31:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c (int_ord): Integer#ord implemented.
-
-Mon Dec 22 21:26:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_s_pipe): IO.pipe can take a block.
-	  (pipe_close): new function.
-
-Mon Dec 22 21:08:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb (assert_nothing_raised): increment
-	  assertion count.  [ruby-dev:37480]
-
-Mon Dec 22 19:10:44 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (Init_native_thread): need to call
-	  ruby_thread_set_native() here.
-
-Mon Dec 22 18:00:36 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: fix wrong flag value.
-
-Mon Dec 22 15:15:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/protocol.rb (Net::BufferedIO#rbuf_fill): avoid calling
-	  read_nonblock in rescue.  use retry instead.
-
-Mon Dec 22 14:35:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_external_str_new_with_enc): set ASCII-8BIT if
-	  encoding is US-ASCII and string contains 8bit characters.
-
-Mon Dec 22 12:26:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (rubydll.def), win32/mkexports.rb
-	  (Exports#exports): added VERSION.
-
-Mon Dec 22 12:25:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD_vfprintf): fix for test_sprintf_comb.rb, by
-	  wanabe in [ruby-dev:36935].
-
-Mon Dec 22 12:05:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (mingw): no longer uses snprintf and vsnprintf of
-	  msvcrt.  [Bug#6]
-
-	* win32/win32.c (rb_w32_vsnprintf, rb_w32_snprintf): removed.
-
-	* win32/Makefile.sub (config.h): vsnprintf exists in VC7 or later.
-
-	* win32/mkexports.rb (Exports#initialize): aliases
-	  rb_w32_vsnprintf and rb_w32_snprintf for binary compatibility.
-
-	* sprintf.c (rb_str_format): uses snprintf instead of sprintf.
-
-	* numeric.c (flo_to_s, rb_num2long, rb_num2ll): ditto.
-
-Mon Dec 22 10:59:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_upto): should return enumerator if called
-	  without block.  [ruby-dev:37526]
-
-Mon Dec 22 09:54:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (gettable_gen): the encoding of __FILE__ should be
-	  rb_filesystem_encoding().  [ruby-list:45733]
-
-	* parse.y (gettable_gen): __FILE__ should be ASCII-8BIT when
-	  filesystem encoding is US-ASCII and __FILE__ contains non 7bit
-	  characters.
-
-Mon Dec 22 02:54:56 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: temporary patch for trouble on TkAqua (> Tk8.4.9).
-
-	* ext/tk/sample/demos-jp/widget: set encoding to a demo-code string to
-	  avoid garbled text on the Code Window.
-
-Sun Dec 21 14:55:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (SPLAT_PROC): splat values by hand.
-
-Sun Dec 21 13:50:37 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline.rb
-	  (TestReadline#test_some_characters_methods): checked encoding.
-
-Sun Dec 21 12:23:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (SPLAT_PROC): fix for regexp.  [ruby-dev:37514]
-
-Sun Dec 21 10:43:10 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* sample/test.rb: rescue exception.
-
-Sat Dec 20 18:28:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_find_1): supplements an extension for executable
-	  files on DOSish platforms.
-
-	* io.c (pipe_open): use rb_w32_aspawn() for array form.
-
-	* win32/win32.c (rb_w32_pipe_exec): no longer used.
-
-	* win32/win32.c (rb_w32_spawn, rb_w32_aspawn): deals with batch
-	  files and commands with extensions.  [ruby-core:20695]
-
-	* win32/win32.c (has_redirection): supports environment variables
-	  references.
-
-Sat Dec 20 15:34:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rake.rb (Rake::FileList#egrep): change open mode to "rb",
-	  i.e. default to binary.    [ruby-dev:37385]
-
-	* lib/rake.rb (Rake::FileList#egrep): allow specifying reading
-	  encoding, e.g. FileList['*.rb'].egrep(/require/, encoding:
-	  "ascii-8bit")
-
-	* lib/rake.rb (Rake::MultiTask): invoke_prerequisites should be
-	  private.  a patch from okkez in [ruby-dev:37399]
-
-Sat Dec 20 10:59:16 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/locale.rb (IRB::Locale#initialize)
-	  initializes instance variables to suppress warnings.
-	  typo fix to ignore LoadError: [ruby-dev:37508]
-
-Fri Dec 19 17:01:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_extract_encoding_option): "internal_encoding: nil"
-	  to specify no-transcoding.  and other corner case fixed.
-	  [ruby-dev:37496]
-
-	* hash.c (rb_hash_lookup2): new function to look-up hash with
-	  default value.
-
-Fri Dec 19 15:51:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): get rid of warning on DOSISH.
-
-Fri Dec 19 07:45:37 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (exc_equal): duck typing equal to make it transitive.
-	  [ruby-dev:34808]
-
-Thu Dec 18 19:31:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/irb/init.rb (IRB.opt_parse): (M17N) adds -U and -E as command
-	  line options. [ruby-dev:37161]. Fixes #711.
-	  improved long options.
-
-	* lib/irb/init.rb (IRB.set_encoding): new subroutine for IRB.opt_parse
-
-	* lib/irb/input-method.rb (IRB::StdioInputMethod): (M17N) regards
-	  scripts that user types as encoded in the external_encoding.
-
-	* lib/irb/input-method.rb (IRB::ReadlineInputMethod): ditto.
-
-	* lib/irb/input-method.rb (IRB::FileInputMethod): (M17N) respects
-	  magic comment.
-
-	* lib/irb/help.rb (IRB.print_usage): (M17N) respects magic comment
-	  in the resource file.
-
-	* lib/irb/lc/help-message: adds -U and -E.
-
-	* lib/irb/lc/ja/help-message: ditto. re-encoded from ISO-2022-JP into UTF-8.
-
-	* lib/irb/lc/ja/encoding_aliases.rb: new file. provides Japanese specific
-	  character encoding name table for backward compatibility.
-
-	* lib/irb/lc/ja/error.rb: re-encoded from ISO-2022-JP into UTF-8.
-	  magic comment.
-
-	* lib/irb/locale.rb: integrated with Ruby 1.9's M17N support.
-
-	* lib/irb/magic-file.rb: new file. utility to handle files with magic
-	  comment and opens in the correct encoding.
-
-	* lib/irb/ruby-lex.rb (RubyLex#each_top_level_statement): recovers
-	  character encoding for a statement after it lexed so that irb can
-	  eval the statement in correct encoding.
-
-	* lib/irb/src_encoding.rb: new file. utility.
-
-Thu Dec 18 21:12:28 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session.rb: fix bug for ignore session_id option.
-	  report from [ruby-core:18635], [Bug #572]
-
-	* lib/cgi/core.rb: use Encoding#find when encoding set.
-
-	* test/cgi/test_cgi_session.rb: test for session_id specified.
-
-Thu Dec 18 17:00:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_aset): string key copying only happen if key is
-	  an exact instance of String, not a subclass. based on a patch
-	  from Mike Gold <mike.gold.4433 at gmail.com> in [ruby-talk:322667].
-	  [incompatible] [ruby-talk:322417]
-
-Thu Dec 18 16:48:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/optparse/version.rb: remove variable shadowing to stop
-	  warning.   [ruby-core:20612]
-
-	* lib/irb/completion.rb, lib/net/imap.rb, lib/prime.rb,
-	  lib/rinda/ring.rb, lib/racc/parser.rb,
-	  lib/shell/command-processor.rb, lib/yaml/yamlnode.rb: ditto.
-
-	* lib/racc/parser.rb: remove space before parentheses.
-
-	* lib/shell/command-processor.rb, lib/shell/process-controller.rb:
-	  use parentheses around arguments.
-
-	* lib/irb/ext/change-ws.rb, lib/rexml/validation/relaxng.rb,
-	  lib/yaml/baseemitter.rb: indentation fix.
-
-	* lib/matrix.rb: small cosmetic change.
-
-Thu Dec 18 08:15:04 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/server.rb:  Restricting method inspection to show only
-	  non-inherited public methods.  [ruby-core:20603]
-
-	* lib/xmlrpc/server.rb:  Fixing method inspection so it doesn't
-	  trigger XMLRPC::FaultException when used.  [ruby-core:20604]
-
-Wed Dec 17 19:39:44 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (unix_recv_io): relax msg_controllen error
-	  check for x86_64-openbsd4.4.
-
-Wed Dec 17 19:37:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/extconf.rb: check util.h for OpenBSD.
-
-	* ext/pty/pty.c: include util.h if available.  fix variable name.
-
-Wed Dec 17 19:23:28 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/matrix.rb: shut up warning. [ruby-dev:37481] [Bug #899]
-
-Wed Dec 17 15:44:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_pop_m): use enum ary_take_pos_flags.
-
-	* array.c (rb_ary_push_m): add modification check before actual
-	  operation.   [ruby-dev:37440]
-
-Wed Dec 17 15:35:39 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in (OBJDUMP, OBJCOPY):
-	  *BSD's ports and MacPorts prefix GNU binutils with 'g'.
-
-Wed Dec 17 11:39:39 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/bigdecimal/test_bigdecimal.rb (TestBigDecimal#test_hash):
-	  shut up warning.  see [ruby-dev:37437]
-
-Wed Dec 17 11:01:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_hash): gets rid of collisions between different
-	  encoding strings.  [ruby-core:20526]
-
-Wed Dec 17 09:50:19 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_metaclass.rb: removed codes for my debugging.
-	  sorry. [ruby-dev:37470]
-
-Tue Dec 16 22:55:11 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bin/testrb: set $0.
-
-Tue Dec 16 22:42:16 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit.setup_argv): sorry, fixed wrong commit.
-
-Tue Dec 16 22:15:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/minitest/unit.rb (MiniTest::Assertions#assert_instance_of):
-	  should assert by instance_of?, not ===.  [ruby-dev:37458]
-
-	* lib/minitest/unit.rb (MiniTest::Assertions#assert_instance_of):
-	  typo fixed.
-
-Tue Dec 16 21:59:29 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit.setup_argv): ALT_SEPARATOR support.
-
-Tue Dec 16 21:59:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpToString): reverted modification
-	  (that caused a bug) in r20359.  [ruby-dev:37370]
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_limit): comment update.
-	  [ruby-dev:37465]
-
-Tue Dec 16 20:34:44 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (getDevice): add nomesg argument.
-	  (get_device_once): add nomesg argument.  chmod slave tty to 0600
-	  if nomesg.  more error tests.
-	  (no_mesg): new function.
-	  (pty_open): make slave tty's mode 0600.
-
-Tue Dec 16 20:24:20 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (_parse): m17n compliant.
-
-Tue Dec 16 19:48:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/extconf.rb: check posix_openpt.
-
-	* ext/pty/pty.c (get_device_once): use posix_openpt if available.
-
-Tue Dec 16 19:43:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c: use strlcpy for error messages.
-
-Tue Dec 16 16:41:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): returns dispatched result.
-
-	* parse.y (primary): also in ripper, saves in_def before restoring.
-
-Tue Dec 16 12:30:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ac_cv_header_ucontext_h): do not use ucontext.h on Mac
-	  OS X 10.5 or later.  merged from MacPorts.
-
-	* configure.in (ac_cv_func_daemon): daemon(3) is deprecated on Mac OS
-	  X 10.5 or later.
-
-Tue Dec 16 11:37:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (set_arg0): use strlcpy() instead of strncpy().
-
-	* load.c (rb_feature_p): ditto.
-
-	* dln.c (dln_load): ditto.
-
-Tue Dec 16 09:14:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (block_call): block should not be given to yield.
-	  [ruby-core:20583]
-
-Mon Dec 15 23:48:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (sleep_timeval): cast tv_usec to long to shut up
-	  warnings on OSX.  [ruby-dev:37449]
-
-Mon Dec 15 23:34:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (pty_open): set FMODE_SYNC and FMODE_DUPLEX.
-
-Mon Dec 15 23:29:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (process_options): revive global sub, gsub, chop, chomp
-	  only when auto looping options (-p/-n) is specified.
-	  [ruby-core:20570]
-
-Mon Dec 15 22:48:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (pty_open): new method PTY.open.
-
-Mon Dec 15 21:24:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (get_device_once): use DEVICELEN instead of
-	  sizeof SlaveName.
-
-Mon Dec 15 21:01:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (chfunc): make it static.
-
-Mon Dec 15 20:59:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (child_info): add slavename.
-	  (chfunc): use slavename.
-	  (establishShell): set slavename.
-
-Mon Dec 15 20:16:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (EXTMK_ARGS): shouldn't use ``\"'' because cmd.exe eat
-	  ''\'' in such quotes.
-
-Mon Dec 15 19:07:31 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): define CANONICALIZATION_FOR_MATHN
-	  to follow r20683.
-
-Mon Dec 15 18:12:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rake/packagetask.rb (Rake::PackageTask): small document
-	  update from okkez in [ruby-dev:37443]
-
-Mon Dec 15 16:28:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_callee_setup_arg_complex): uses cfp from
-	  blockptr instead of the current cfp.  [ruby-core:20544]
-
-Mon Dec 15 14:56:59 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_metaclass.rb: new test case for metaclass hierarchy.
-
-	* class.c (make_metametaclass): new function. extracted from
-	  rb_make_metaclass.
-
-	* class.c (rb_make_metaclass): uses make_metametaclass when called for a
-	  metaclass.
-
-	* class.c (rb_singleton_class): creates a meta^(n+2)-class in
-	  addition to a meta^(n+1)-class when called for a meta^(n)-class.
-	  This is because the returned meta^(n+1) class must acts as an instance of
-	  Class, metaclass of Class, ..., meta^(n+1)-class of Class,
-	  Module, metaclass of Module, ..., meta^(n+1)-class of Module,
-	  Object, metaclass of Object, ..., meta^(n+2)-class of Object,
-	  BasicObject, metaclass of BasicObject, ..., meta^(n+2)-class of
-	  and BasicObject even when Class, Module, Object or BasicObject has
-	  not have its meta^(i)-class yet.
-
-Mon Dec 15 15:13:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* id.h, template/id.h.tmpl (ruby_method_ids): sees YYTOKENTYPE too.
-	  [ruby-dev:37436]
-
-Mon Dec 15 15:02:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (EXTMK_ARGS): needs MINIRUBY for cross-compile.
-	  [ruby-core:20131]
-
-Mon Dec 15 14:39:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (vm_call0): NODE_ZSUPER supported.  [ruby-core:20480]
-
-	* vm_eval.c (vm_call_super): uses method_missing().
-
-	* vm_eval.c (method_missing): get rid of too large alloca.
-
-	* vm_eval.c (rb_call0, method_missing): uses idMethodMissing.
-
-	* vm_method.c (rb_add_method, remove_method, rb_undef): uses
-	  id__send__.
-
-	* vm_method.c (Init_eval_method): removed IDs which are defined as
-	  immediate values.
-
-Mon Dec 15 11:35:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_backtrace): defaults to script name for C functions.
-
-Mon Dec 15 11:32:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (rubylib_mangled_path, rubylib_mangled_path2): cannot use
-	  locale encoding before load path is initialized
-
-	* ruby.c (ruby_init_loadpath_safe): ditto.
-
-	* ruby.c (process_options): loads encdb so that encodings can be
-	  loaded, then associates script name and load paths with the
-	  locale encoding.
-
-Mon Dec 15 10:00:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (btest-ruby): use RUNRUBY instead of MINIRUBY to load the
-	  shared library.  [Bug #849]
-
-Sun Dec 14 22:31:19 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (bigmul1_karatsuba): remove temporal bignum.
-
-	* bignum.c (bigsqr): call bigmul0(x, x) because it is faster than the
-	  original bigsqr at this point.
-
-	* bignum.c (rb_big_pow): a value returned from bigsqr is already
-	  truncated.
-
-Sun Dec 14 21:13:02 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (bigmul1_karatsuba): fix comment and refactoring.
-
-Sun Dec 14 14:53:41 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (bigmul1_balance, bigmul1_karatsuba): remove all
-	  rb_gc_force_recycle which causes memory leak.
-
-Sun Dec 14 14:26:11 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/README: directory structure changed
-
-Sun Dec 14 09:14:37 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* reverts r20713.
-
-Sun Dec 14 12:51:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (rb_big_mul): faster multiplication by Karatsuba method and
-	  twice faster square than normal multiplication. [ruby-dev:37392]
-
-	* random.c (rb_rand_internal): used by Bignum#*.
-
-	* test/ruby/test_bignum.rb: add some tests for above.
-
-Sun Dec 14 01:35:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (forked_child): new variable.
-	  (before_exec): don't call rb_thread_stop_timer_thread if
-	  forked_child.
-	  (after_exec): reset forked_child after rb_thread_start_timer_thread.
-	  (rb_fork): set forked_child just after fork in child.
-
-	* ext/pty/pty.c (chfunc): extracted from establishShell.
-	  (establishShell): use rb_fork.
-
-	  [ruby-dev:37418]
-
-Sat Dec 13 22:17:30 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (help): describes more targets.
-	  based on a patch by Michael Klishin. [ruby-core:20523].
-
-Sat Dec 13 18:34:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_printable): wrong condition for string iteration.
-
-Sat Dec 13 16:04:48 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* encoding.c (default_external): endless recursion during
-	  loading a locale encoding on some locale.
-	  fixed by Nobuyoshi Nakada.
-
-Sat Dec 13 15:55:37 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ruby.c (process_options): fixed default_internal is nil.
-	  (closes #862)
-
-Sat Dec 13 15:52:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_equal): remove documentation error "Otherwise,
-	  compares them as strings".  [ruby-dev:37398]
-
-	* string.c (sym_inspect): quote if symbol contains non-printable
-	  characters.  [ruby-dev:37398]
-
-Sat Dec 13 14:24:38 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/enc/test_utf16.rb: feature changed in r20626.
-	  follows it.
-
-Sat Dec 13 13:41:44 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_m17n_comb.rb: feature changed in r20626.
-	  follows it.
-
-Sat Dec 13 13:03:20 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: use rb_usascii_str_new2 instead of rb_str_new2.
-
-	* rational.c: ditto.
-
-Sat Dec 13 12:48:57 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_m17n.rb: feature changed in r20626.
-	  follows it.
-
-Sat Dec 13 12:38:16 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/minitest/test.rb (MinTest::Unit#location):
-	  skips user-defined assertions as MiniTest's.
-	  e.g. for test/ruby/test_m17n.rb.
-
-Sat Dec 13 09:17:33 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/*.rb: Imported minitest 1.3.1 r4503.
-	* test/minitest/test_mini_test.rb: ditto.
-	* lib/miniunit/autorun.rb: added (as part of r4503).
-
-Sat Dec 13 08:35:14 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_canonicalization): renamed.
-
-	* ext/math/complex.c: followed the above change.
-
-	* rational.c (nurat_canonicalization): renamed.
-
-	* ext/math/rational.c: followed the above change.
-
-	* configure.in: defines a new macro.
-
-Sat Dec 13 01:10:03 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c
-	  (readline_s_get_completion_append_character): uses locale
-	  encoding but not ASCII-8BIT.
-
-Fri Dec 12 22:12:46 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c, rational.c: do not use RUBY_VERSION_CODE.
-
-Fri Dec 12 21:41:36 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c: r20662 reverted.
-
-Fri Dec 12 19:29:07 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* encoding.c (rb_enc_set_default_external): default_internal can be
-	  nil, but default_external cannot.
-
-	* encoding.c (rb_set_default_internal): adds rdoc.
-
-	* encoding.c (enc_find): ditto.
-
-Fri Dec 12 19:24:47 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (run, runruby, parse, gdb, gdb-ruby): you can also run
-	  other scripts than $(srcdir)/test.rb.
-
-Fri Dec 12 19:13:43 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c (readline_readline): changed the message
-	  of IOError to 'closed stdin' from 'stdin closed' if stdin was
-	  closed.
-
-Fri Dec 12 19:00:49 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c: used the ExportStringValue macro
-	  instead of the OutputStringValue macro. removed the
-	  OutputStringValue macro.
-
-Fri Dec 12 16:23:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (yycompile0): ruby_eval_tree_begin is always 0 when
-	  ruby_eval_tree is 0.
-
-Fri Dec 12 14:09:55 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* encoding.c (enc_get_default_encoding): removed.
-	  Generalizing rb_default_{external,internal}_encoding seems to be
-	  difficult.
-	  default_external cannot be NULL even before detected. [ruby-dev:37390]
-
-	* encoding.c (rb_default_external_encoding): has its own
-	  implementation again.
-
-	* encoding.c (rb_default_internal_encoding): ditto.
-
-	* gem_prelude.rb: added notice.
-
-	* ruby.c (rubylib_mangled_path, rubylib_mangled_path2): uses locale
-	  encoding but not ASCII-8BIT.
-
-	* ruby.c (process_options): refers less to default_external.
-
-Fri Dec 12 11:00:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_feature_p): load path must be expanded.
-	  [ruby-dev:37388]
-
-Fri Dec 12 10:28:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_version): greps only the line that defines version.
-
-	* version.h (RUBY_VERSION_CODE, RUBY_RELEASE_CODE): removed.
-
-Fri Dec 12 10:20:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c, rational.c: do not use RUBY_VERSION_CODE.
-
-Fri Dec 12 10:19:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_string_value_ptr, rb_to_id): do not use a side
-	  effect expression in RSTRING_PTR.
-
-	* string.c (rb_str_split_m): simplified the argument of
-	  RSTRING_LEN.
-
-Thu Dec 11 23:48:00 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb (sqrt): should pass nan to the original method.
-
-Thu Dec 11 21:04:04 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker.rb, lib/rss/maker/0.9.rb, lib/rss/maker/base.rb:
-	  RSS::Maker.[] returns a maker class corresponds to passed version.
-
-	* test/rss/test_maker_*.rb: add tests for RSS::Maker.[].
-
-Thu Dec 11 20:05:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_aliases_enc_i): skips default internal.
-
-Thu Dec 11 19:31:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/assertions.rb: extracted from lib/test/unit.rb.
-	  lib/test/unit/testcase.rb: ditto.
-	  at asakusa.rb.  [ruby-core:20014]
-
-Thu Dec 11 19:23:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io.rb (test_dup_many): extracted from test_dup.
-	  test in ruby subprocess.  at asakusa.rb.  [ruby-dev:35648]
-
-Thu Dec 11 19:16:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb (Pathname#=~): undefed.  at asakusa.rb.
-	  [ruby-core:19690]
-
-Thu Dec 11 13:09:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (reg_enc_error): raise EncodingCompatibilityError for
-	  encoding incompatibility.  [ruby-core:18600]
-
-	* re.c (rb_reg_prepare_enc): more consistent error message.
-	  [ruby-core:18611]
-
-Thu Dec 11 13:36:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_set_default_encoding): allowed to set default
-	  encoding.
-
-	* encoding.c (rb_locale_encoding): removed Encoding::LOCALE.
-
-	* encoding.c (rb_enc_set_default_external): ditto.
-
-	* encoding.c (rb_enc_set_default_internal): ditto.
-
-	* encoding.c (rb_enc_set_default_internal): defines internal
-	  encoding as nil.
-
-Thu Dec 11 11:11:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/st.h (size_t): needs stddef.h or stdlib.h.
-	  [ruby-core:20339]
-
-Thu Dec 11 10:25:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_bignum.rb (TestBignum#test_convert): remove
-	  platform dependent call of Process.wait.  coverage should be
-	  accomplished by other method.  [ruby-dev:36062]
-
-Thu Dec 11 10:18:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/document.rb (REXML::Document#write): require
-	  rexml/formatters/transitive if transitive flag is on.  a patch
-	  from akira yamada in [ruby-dev:36230].  fix #553
-
-	* lib/rexml/element.rb (REXML::Element#write): ditto.
-
-	* lib/rexml/formatters/transitive.rb (REXML::Formatters::Transitive#write_element):
-	  add hack for IE.  [ruby-dev:36230]
-
-Thu Dec 11 02:37:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (domain_check): should not raise EDOM exception for NaN
-	  value if operand is also NaN.  affects acos, asin, acosh, atanh,
-	  log, log2, log10, sqrt, gamma, lgamma. [ruby-dev:37357]
-
-Thu Dec 11 02:23:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb (Open3.pipeline_start): return an array of threads if a
-	  block is not given.
-
-Thu Dec 11 01:48:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_round): should be round
-	  to integer.  [ruby-dev:37355]
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_divmod): division should
-	  be integer.  [incompatible] [ruby-dev:37355]
-
-Thu Dec 11 01:21:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_mutex_unlock): shut up warning.  a patch from
-	  Kazuhiro NISHIYAMA in [ruby-dev:37345]. fix #846
-
-Wed Dec 10 23:58:56 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: avoided warnings on cpp. [ruby-dev:37344]
-
-	* rational.c: ditto.
-
-Wed Dec 10 21:32:02 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker.rb (RSS::Maker.[]): add.
-	  Suggested by Akinori MUSHA. Thanks!!! [ruby-dev:37210]
-
-Wed Dec 10 12:56:32 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_rewind): If the enclosed object
-	  responds to a "rewind" method, call it; cf. [ruby-dev:37268]
-
-Wed Dec 10 12:46:52 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_next): Fix a typo: s/rewinded/rewound/.
-
-	* lib/prime.rb (Prime::OldCompatibility#each): Ditto.
-
-Wed Dec 10 11:25:53 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): raise RegexpError when encoding
-	  is dummy encoding. [ruby-dev:37091]
-
-Wed Dec 10 01:28:16 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (win32.obj): depend on headers.
-
-Tue Dec  9 18:35:35 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans, cp850-tbl.rb, cp852-tbl.rb,
-	  cp855-tbl.rb, koi8-r-tbl.rb, koi8-u-tbl.rb, tis-620-tbl.rb:
-	  new single-byte transcodings (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi), small cosmetic fixes
-
-Tue Dec  9 13:33:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each), gc.c (assign_heap_slot),
-	  (gc_mark_children), parse.y (vtable_alloc, vtable_free, vtable_add),
-	  proc.c (proc_to_s), thread.c (terminate_i, rb_thread_terminate_all),
-	  (thread_start_func_2, blocking_region_begin, blocking_region_end),
-	  (rb_thread_kill), thread_pthread.c (native_thread_create),
-	  (ubf_pthread_cond_signal), vm.c (check_env, thread_free), vm_dump.c
-	  (vm_env_dump_raw, vm_stack_dump_each, vm_thread_dump_state),
-	  (vm_call0): use void pointer for %p.
-
-	* cont.c (fiber_status), template/insns.inc.tmpl (ruby_vminsn_type),
-	  vm_insnhelper.h (BOP): ISO C forbids comma at end of enumerator
-	  list.
-
-	* vm_insnhelper.c (check_cfunc): use function pointer.
-
-Tue Dec  9 13:23:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c (curses_use_default_colors): add new
-	  method.  a patch from Giancarlo F Bellido
-	  <support at coaxialhost.com> in [ruby-core:20434].
-
-	* ext/curses/curses.c (curses_tabsize_set): ditto.
-
-	* ext/curses/curses.c (curses_tabsize_get): ditto.
-
-Tue Dec  9 12:08:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* .gdbinit (rp): fixed typo for T_STRUCT.
-
-Tue Dec  9 11:50:46 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* pack.c (pack_pack): fixed [ruby-dev:37295].
-	  Array#pack always has returned an US-ASCII string when
-	  the given format ended with 'u', 'M' or 'm'.
-
-Tue Dec  9 03:21:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: fix for continued lines.  based on a patch from
-	  Marcus Rueckert <darix AT opensu.se> at [ruby-core:20420].
-
-Tue Dec  9 00:54:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (package): enc.mk in snapshot is dummy and should
-	  not deal with objects.  [ruby-core:20422]
-
-Tue Dec  9 00:17:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (clean-srcs): split out from clean.
-
-Mon Dec  8 23:34:18 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* pack.c (pack_pack): fixed odd act of 'm*', 'M*', and 'P*'.
-	  just ignores '*' in these cases.
-	  [ruby-dev:37289]
-
-Mon Dec  8 18:31:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_pack): fixed length for odd length string.
-	  [ruby-dev:37283]
-
-Mon Dec  8 11:28:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): added version, copyright, usage, yydebug,
-	  syntax to --dump option.
-
-Mon Dec  8 11:15:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): source-encoding option.
-
-Mon Dec  8 10:32:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (set_option_encoding_once): dry.
-
-	* ruby.c (proc_options): checks extra argument for -E/--encoding.
-
-Sun Dec  7 23:47:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBPATHFLAG): use numbered specifier if RPATHFLAG
-	  is set.  [ruby-talk:322136]
-
-Sun Dec  7 23:17:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (LIBRUBY_SO): localizes non-public symbols.
-
-	* configure.in (OBJDUMP, OBJCOPY): for dealing with binary files.
-
-Sun Dec  7 17:44:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb (Open3.capture3): renamed from Open3.poutput3.
-	  (Open3.capture2): renamed from Open3.poutput2.
-	  (Open3.capture2e): renamed from Open3.poutput2e.
-
-Sun Dec  7 11:48:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb (Open3.poutput3): :binmode option implemented.
-	  (Open3.poutput2): ditto.
-	  (Open3.poutput2e): ditto.
-
-Sat Dec  6 18:33:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot (package): added RM and CP.  [ruby-dev:37288]
-
-Sat Dec  6 17:51:35 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* pack.c (pack_pack): 'u0' is not special differently from 'm0'.
-
-Sat Dec  6 14:35:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* pack.c (pack_pack): set US-ASCII and CODERANGE_7BIT
-	  when quoted-printable ('M') and base64 ('m').
-	  [ruby-dev:37284]
-
-	* pack.c (pack_unpack): ditto.
-
-Fri Dec  5 22:56:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_make_exception): single argument to raise may be
-	  string compatible object.
-
-Fri Dec  5 21:45:45 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_{to_s,inspect}): performance improvement.
-
-Fri Dec  5 21:42:44 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: inspect should not depend on to_s.
-
-Fri Dec  5 21:18:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_truncate): return
-	  integer if no optional argument given. [incompatible]
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_floor): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_ceil): ditto.
-
-Fri Dec  5 19:06:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb (Open3.pipeline_start): new method.
-	  (Open3.pipeline): ditto.
-
-Fri Dec  5 18:55:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (run_exec_dup2): !save is false if Qnil.
-
-Fri Dec  5 18:07:32 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read, rb_w32_write, rb_w32_isatty): check
-	  whether fd is valid.
-
-Fri Dec  5 13:05:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (rb_iseq_parameters): proc arguments are always optional.
-
-	* proc.c (get_proc_iseq, rb_proc_parameters): ditto.
-
-Fri Dec  5 12:38:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_set_sequence): uses rb_compile_warning() for
-	  warning at compilation time.
-
-Fri Dec  5 12:35:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (ruby_iseq_compile, ruby_iseq_translate_threaded_code),
-	  (ruby_insns_name_array, ruby_iseq_build_from_ary): prefixed with
-	  ruby_.
-
-	* iseq.c (ruby_iseq_load, ruby_insn_make_insn_table): ditto.
-
-Fri Dec  5 10:01:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_cmp_m): fixed rdoc.  pointed out by <Thomas
-	  C. Mitchell AT gmail.com> at [ruby-talk:321967]
-
-Fri Dec  5 07:58:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_binwrite): arg.offset should be updated after retry.
-
-Fri Dec  5 03:29:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_get_load_path): returns the load path without
-	  touching.
-
-	* load.c (rb_feature_provided): new function to return the loading
-	  path in addition to rb_provided().
-
-	* load.c (search_required): sets path if loading.
-
-	* variable.c (autoload_provided): load paths are expanded to check
-	  if loading.
-
-	* variable.c (autoload_node): keeps autoload mark while loading.
-	  [ruby-core:20235]
-
-	* variable.c (rb_const_get_0): loops while autoload mark is set.
-
-Fri Dec  5 01:37:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read): ERROR_BROKEN_PIPE is not a real error
-	  at this point.
-
-	* io.c (pipe_open): use rb_w32_spawn() instead of rb_w32_pipe_exec()
-	  to use our own redirection scheme.
-
-Fri Dec  5 01:35:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (sym_to_proc): use hidden object.
-
-Fri Dec  5 01:19:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): propagate taint status from format string to
-	  result string.
-
-Fri Dec  5 00:34:10 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (run_exec_dup2): need to sort by reverted order when
-	  restoring fds.
-
-Fri Dec  5 00:17:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (sym_to_proc): caches Symbol procs, based on a patch from
-	  Shumpei Akai <admin AT flexfrank.net>.  [ruby-dev:37265]
-
-Thu Dec  4 23:29:34 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (waitpid): fix bug of checking child slot.
-
-	* win32/win32.c (FindChildSlotByHandle): new.
-
-Thu Dec  4 23:24:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb (Open3.poutput3): new method.
-	  (Open3.poutput2): ditto.
-	  (Open3.poutput2e): ditto.
-
-Thu Dec  4 23:02:13 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec: follows changes in rubyspec project.
-	  inherits configurations from ruby.1.9.mspec.
-
-Thu Dec  4 22:13:55 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/ruby/test_complex.rb: added some tests.
-
-	* test/ruby/test_rational.rb: ditto.
-
-Thu Dec  4 19:56:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb (Open3.popen3): simplified.
-	  (Open3.popen_run): extracted from Open3.popen3.
-	  (Open3.popen2): new method.
-	  (Open3.popen2e): new method.
-	  (Open3.pipeline_rw): new method.
-	  (Open3.pipeline_r): new method.
-	  (Open3.pipeline_w): new method.
-	  (Open3.pipeline_run): new private method.
-
-Thu Dec  4 19:16:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (check_exec_fds): resolve cascaded child fd reference.
-
-Thu Dec  4 16:58:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rubygems/validator.rb (Gem#remove_leading_dot_dir): make
-	  this method private.  a patch from okkez in [ruby-dev:37245]
-
-Thu Dec  4 16:19:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_read_nonblock):
-	  OpenSSL::SSL::SSLSocket should implement read_nonblock.  a patch
-	  from Aaron Patterson in [ruby-core:20277].  fix: #814 [ruby-core:20241]
-
-Thu Dec  4 16:16:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/gserver.rb: fixed type in sample code.  a report from Oleg
-	  Puchinin.
-
-Thu Dec  4 14:54:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rubygems/local_remote_options.rb (Gem#add_update_sources_option):
-	  little documentation fix.  a patch from okkez.  [ruby-dev:37271]
-
-Thu Dec  4 13:56:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c (window_getch): avoid ISPRINT() macro which
-	  has an issue with OpenSolaris.  [ruby-core:20189]
-
-	* ext/curses/curses.c (curses_getch): no ISPRINT(). [ruby-core:20294]
-
-	* signal.c (ruby_signal): EINVAL from sigaction(2) is not a bug.
-
-Thu Dec  4 11:40:56 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (inspect_enumerator): Implement #inspect.
-	  [ruby-dev:37248]-[ruby-dev:37263]
-
-Thu Dec  4 11:38:40 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* vm_method.c (rb_obj_respond_to): Remove a duplicated rdoc
-	  comment and fix a markup error.
-
-Thu Dec  4 06:04:16 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk/menu.rb: TkOptionMenubutton.new fails to treat
-	  'parent' and 'variable' options on a Hash argument.
-
-Thu Dec  4 05:06:47 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: bug fix. use ::RubyVM instead of ::VM
-	  [ruby-list:45676]
-
-	* ext/tk/tcltklib.c: update RELEASE_DATE
-
-Thu Dec  4 01:37:47 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nurat_{to_s,inspect}): provides better representation
-	  for in-finite imag part.
-
-Thu Dec  4 01:22:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (f_signbit): NaN may be signed value.
-
-Wed Dec  3 23:59:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (EXEC_OPTION_DUP2_CHILD): defined.
-	  (check_exec_redirect_fd): check :in, :out and :err.
-	  (check_exec_redirect): check [:child, fd].
-	  (check_exec_fds): validate EXEC_OPTION_DUP2_CHILD array.
-	  (run_exec_dup2_child): new function.
-	  (rb_run_exec_options): call run_exec_dup2_child.
-
-Wed Dec  3 22:54:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (expr): keyword_not can continue across newline.
-	  [ruby-core:20252]
-
-Wed Dec  3 22:40:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (simple_default_value): returns simplest assignment only.
-	  [ruby-core:20237]
-
-Wed Dec  3 21:30:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (check_exec_redirect): accept :in, :out, :err as redirect
-	  target.
-
-Wed Dec  3 21:18:27 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/ruby/test_rational.rb: revert.
-
-Wed Dec  3 14:48:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/tcltklib.c (ip_ruby_cmd, ip_invoke_with_position): must
-	  not access internal union directly.  [ruby-list:45670]
-
-Wed Dec  3 12:24:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getc, rb_io_readchar): documentation correction from
-	  Emiel van de Laar.  [ruby-core:20212]
-
-	* ext/stringio/stringio.c (strio_readchar): ditto.
-
-Wed Dec  3 09:26:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/xpath.rb (REXML::XPath.first): apply documentation
-	  patch from Ken Bloom in [ruby-core:20213].
-
-	* lib/rexml/xpath.rb (REXML::XPath.each): ditto.
-
-Wed Dec  3 02:56:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rational.rb: add a test.
-
-Wed Dec  3 02:53:24 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_range.rb: add a test.
-
-Wed Dec  3 02:26:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_string.rb: add some tests.
-
-Wed Dec  3 02:04:21 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/pty/pty.c (Init_pty): fix typo.
-
-Tue Dec  2 19:22:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb (Open3.popen3): merge hash options if given.
-
-Tue Dec  2 15:31:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/protocol.rb (Net::BufferedIO#rbuf_fill): use
-	  read_nonblock instead of sysread wrapped by timeout to boost
-	  performance.  a patch from Aaron Patterson in [ruby-core:20191].
-	  fix #806
-
-Mon Dec  1 23:23:52 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* set 1.9.1-p5000 into version number. [ruby-dev:36998]
-
-Mon Dec  1 15:48:47 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* signal.c (register_sigaltstack): no need to define on non-sigaltstack
-	  platform.
-
-Mon Dec  1 12:00:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (rb_fiber_start): calls with exact argument number.
-	  [ruby-core:20088]
-
-Sun Nov 30 21:41:10 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/rake.1: new manual page
-
-Sun Nov 30 18:01:50 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_regexp.rb (TestRegexp#test_parse_curly_brace):
-	  now accepts quantifier on anchors again by r20391.
-
-Sat Nov 29 23:56:44 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/irb.1 (EXAMPLES): new section
-
-Sat Nov 29 19:19:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regparse.c (is_invalid_quantifier_target): Perl and old Ruby
-	  accepts quantifier on anchors.  [ruby-core:20161]
-
-Sat Nov 29 18:28:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_getaddrinfo): should have updated for
-	  Mac OS X.  a patch from Shumpei Akai in [ruby-dev:37234]
-
-Sat Nov 29 00:18:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* cont.c (fiber_alloc): separate allocation and initialization.
-	  allow subclass to override #initialize.   [ruby-core:20086]
-
-Fri Nov 28 18:31:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getaddrinfo): refactored to remove
-	  code duplication regarding getaddrinfo.
-
-Fri Nov 28 17:52:26 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/forwardable.rb: should be usable def_single_delegator for
-	  Class and Module.
-
-Fri Nov 28 13:19:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (simple_default_value): extracts simplest default
-	  argument value.
-
-	* iseq.c (rb_iseq_parameters): returns parameter list.
-
-	* proc.c (get_proc_iseq, get_method_iseq): handles ifunc and
-	  bmethod.
-
-	* proc.c (rb_proc_parameters, rb_method_parameters): added
-	  Proc#parameters and Method#parameters.  [ruby-core:19759]
-
-Fri Nov 28 02:18:47 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_DoDivmod): bigdecimal
-	  division (including modulo) should raise ZeroDivisionError as
-	  integer division. [incompatible]
-
-Fri Nov 28 00:12:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (flodivmod): floating point division should raise
-	  ZeroDivisionError as integer division. [incompatible]
-
-Thu Nov 27 23:54:37 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (gc_mark): still needs to check stack depth during GC.
-
-	* gc.c (stack_check): ditto.
-
-Thu Nov 27 21:41:29 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* strftime.c (rb_strftime): should add padding for %%.
-
-Thu Nov 27 16:32:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (register_sigaltstack): stores alt stack for debug
-	  purpose.
-
-Thu Nov 27 16:12:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (ruby_sigaction_t): added.
-
-Thu Nov 27 15:59:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (ruby_stack_check): no check if using sigaltstack.
-
-	* signal.c (ALT_STACK_SIZE): default minimum size is insufficient
-	  for method calls.
-
-	* signal.c (sigsegv): handles stack overflow if possible.
-
-	* thread.c (ruby_thread_stack_overflow): helper function to raise
-	  sysstack_error.
-
-	* thread_pthread.c (ruby_stack_overflowed_p): checks for stack
-	  overflow.
-
-Thu Nov 27 10:40:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_div2): should return
-	  Integer for #div operation.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_div2): should raise
-	  ZeroDivisionError if divisor is zero.  [ruby-dev:37207]
-
-Wed Nov 26 23:15:47 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (STRFTIME): use rb_strftime() recursively, instead of
-	  platform's strftime().
-
-Wed Nov 26 22:46:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpException): bigdecimal zero
-	  division should raise FloatDomainError if mode
-	  VP_EXCEPTION_ZERODIVIDE is set.  [ruby-dev:37204]
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_mode): should handle
-	  VP_EXCEPTION_ZERODIVIDE.
-
-Wed Nov 26 15:16:07 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/gdbm/gdbm.c (rb_gdbm_nextkey): fix memory leak.
-
-Wed Nov 26 03:17:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_r): raise exception
-	  for nan/inf conversion.  [ruby-dev:37187] fix #793
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_i): ditto.
-
-Wed Nov 26 03:00:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (VpAlloc): avoid ALLOCA_N() to avoid
-	  segmentation fault caused by (insanely) long decimal values.
-	  [ruby-dev:37189] fix #794
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_dump, BigDecimal_to_i,
-	  BigDecimal_to_f, BigDecimal_to_s, BigDecimal_split,
-	  BigDecimal_inspect): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (VpToString): small performance
-	  improvement.
-
-Wed Nov 26 00:26:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (STRFTIME): should add padding for %[xXrR] etc.
-	  [ruby-dev:37185] fix: #792
-
-Tue Nov 25 16:26:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_times): taint (and untrust) status should be
-	  inherited by "ary * 0".  [ruby-dev:37024]
-
-Tue Nov 25 15:54:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (rb_strftime): should not swallow incomplete
-	  formatter, e.g. "%E".  [ruby-dev:37170] fix: #787
-
-	* strftime.c (rb_strftime): clear flags before processing unknown
-	  formatter, e.g. "%i".  [ruby-dev:37180]
-
-Tue Nov 25 10:35:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (rb_strftime): "%^P" should convert to upper case.
-	  [ruby-dev:37180]
-
-Tue Nov 25 07:51:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* strftime.c (FMT): use "%0d" formatter for zero padding, not "%.d".
-	  [ruby-dev:37168]  fix: #768
-
-	* strftime.c (rb_strftime): %s to use zero padding by default.
-	  [ruby-dev:37180]
-
-Tue Nov 25 03:37:42 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkextlib/blt/tabset.rb,
-	  ext/tk/lib/tkextlib/blt/tabnotebook.rb:
-	  fix many bugs. Now, those work properly.
-
-Tue Nov 25 03:26:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_step): treat infinite step specially.
-	  [ruby-dev:37157] fix: #781.
-
-Tue Nov 25 01:23:25 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (strftime): ignores '_' flag for %[LN].
-
-Tue Nov 25 00:08:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_fork): stops the timer thread during fork.
-	  [ruby-dev:37117]
-
-	* thread.c (rb_thread_start_timer_thread): timer thread needs
-	  system_working to be set.
-
-Mon Nov 24 23:27:28 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): The # flag should work with %a, %A, %b,
-	  %B, and %h.  [ruby-dev:37162]
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Mon Nov 24 23:16:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (register_sigaltstack): should not add external
-	  variable (with some cosmetic changes).  [ruby-dev:37158]
-
-Mon Nov 24 22:57:25 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): A width specifier for %t and %n should
-	  work.  [ruby-dev:37160]
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Mon Nov 24 22:07:07 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): The precision of %0N should be 9.
-	  [ruby-dev:37156]
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Mon Nov 24 21:38:23 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): The default precision should be 1, not
-	  0.  [ruby-dev:37155]
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Mon Nov 24 19:53:47 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (inspect): changed again.
-
-Mon Nov 24 18:35:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/time.rb: r20251 reverted.  The patched behavior do not round
-	  trip.  [ruby-core:19988]
-
-Sun Nov 23 16:04:05 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* signal.c (default_handler, Init_signal): compile error if
-	  USE_SIGALTSTACK is not defined.
-
-Sun Nov 23 00:04:14 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* signal.c (ALT_STACK_SIZE): 4KB is not enough on Mac OS X.
-	  Uses SIGSTKSZ.
-
-Sat Nov 22 21:29:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_method.rb (test_default_accessibility): test case for
-	  [ruby-dev:37124].
-
-Sat Nov 22 18:24:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_world_writable_p): should return nil for non
-	  world-writable files.
-
-Sat Nov 22 10:31:25 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkextlib/blt.rb, ext/tk/lib/tkextlib/blt/vector.rb:
-	  fix NameError bug.
-
-Sat Nov 22 03:41:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/pty/pty.c (get_device_once): abandon asynchronous exception
-	  that might cause serious problem if a program terminated early.
-	  asynchronous exception is a very bad thing anyway.  use
-	  Process.waitpid(pid) or PTY.check(pid) to poll program
-	  termination. if PTY.check is called with optional second
-	  argument being true, it raises an exception same as one from
-	  previous behavior.  [incompatible] fix: [ruby-core:19583]
-
-Fri Nov 21 22:24:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c (curses_escdelay_set): support ESCDELAY.  a
-	  patch from Giancarlo F Bellido <support at coaxialhost.com> in
-	  [ruby-core:19961].
-
-Fri Nov 21 22:17:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (usage): -W description updated.  [ruby-core:19858]
-
-Fri Nov 21 21:50:54 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (register_sigaltstack): use alternative stack for
-	  SIGSEGV to avoid uncaught stack overflow. based on a patch from
-	  Hiro Yoshioka <hyoshiok at miraclelinux.com> in [ruby-dev:37134].
-	  [ruby-dev:36993]
-
-Fri Nov 21 16:06:54 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm.c (thread_free): th->vm may be NULL when pthread_create
-	  failed for ENOMEM.  [ruby-dev:37095]
-
-Thu Nov 20 07:33:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/logger.rb (Logger): should handle the case that cvs/svn do
-	  not expand $Id keyword.  [ruby-core:19991]
-
-Thu Nov 20 07:27:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/minitest/unit.rb (MiniTest::Assertions#capture_io): adjust
-	  indentation to shut up warning.  [ruby-core:19993]
-
-Wed Nov 19 17:48:05 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (rb_syck_mktime): return DateTime for a value
-	  out of range of Time.   [ruby-core:19919]
-
-Wed Nov 19 14:14:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* node.h (NOEX_MODFUNC): should be include NOEX_PRIVATE.
-	  [ruby-dev:37124]
-
-Wed Nov 19 03:01:04 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_rinda.rb: fixed fails occasionally [ruby-dev:37119].
-	  thanks, shinichiro.h.
-
-Wed Nov 19 02:39:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (Init_syserr): moved function definition itself from
-	  template/known_errors.inc.tmpl.
-
-Wed Nov 19 01:10:52 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/drb.rb (DRbConn::alive?): fixed NoMethodError problem
-	  from NaHi [ruby-dev:37110].
-
-Wed Nov 19 01:05:26 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* cont.c (cont_mark, cont_capture, cont_restore_1): speed up
-	  continuation by copying only valid YARV stack.  [ruby-dev:37106]
-
-Wed Nov 19 00:03:13 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/time.rb: according to RFC2822, -0000 means local time, +0000
-	  means UTC.  a patch from Chun Wang.   [ruby-core:19578]
-
-Tue Nov 18 23:02:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (proc_eq): equivalence check should not done by pointer
-	  comparison, but should be based on iseq contents.   [ruby-dev:37101]
-
-Tue Nov 18 20:30:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/ftp.rb (Net::FTP#open_socket): SOCKSsocket is obsolete.
-	  a patch from Alan Johnson <alan.wayne.johnson at gmail.com> in
-	  [ruby-core:19982].
-
-Tue Nov 18 16:18:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/logger.rb (ProgName): fixed for svn, based on a patch from
-	  Nobuhiro IMAI at [ruby-dev:37108].
-
-Tue Nov 18 15:56:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/webrick/httprequest.rb (WEBrick::HTTPRequest#read_request_line):
-	  use possessive match for path retrieval to avoid huge recursion
-	  for insanely long path.
-
-Tue Nov 18 15:50:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_desc): re might be NULL.
-
-	* regerror.c (onig_error_code_to_format): message updated.
-
-Tue Nov 18 09:42:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::make_switch): makes default
-	  conversion to splat.  [ruby-list:45645]
-
-Mon Nov 17 18:05:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (LIBS): fixed for disable-shared.  [ruby-dev:37103]
-
-Mon Nov 17 11:12:24 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* bin/erb: remove -K option.
-
-Mon Nov 17 02:19:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LIBRUBYARG_STATIC): fixed for --enable-rpath.
-
-Sat Nov 15 22:46:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): returns -1 unless ascii as well as
-	  rb_enc_ascget().  [ruby-dev:37097]
-
-Sat Nov 15 22:23:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (LDSHARED): do not suppress debug info if higher debug
-	  level is given, on cygwin and mingw.
-
-Fri Nov 14 20:27:46 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* README.EXT, README.EXT.ja, vm_exec.c, vm_insnhelper.c: update
-	  filenames.
-
-Thu Nov 13 11:31:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_barrier_wait): gets rid of recursive deadlock.
-
-Thu Nov 13 06:08:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_barrier_{new,wait,release,destroy}): use Mutex so that
-	  circular requires fail with deadlock.  [ruby-core:19821]
-
-Wed Nov 12 07:16:01 2008  David Flanagan  <david@think32>
-
-	* ruby.c (set_internal_encoding_once): fix typo in error string
-
-Wed Nov 12 03:30:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_{external,locale}_str_new_cstr): optimized
-	  versions for literal strings.
-
-Wed Nov 12 03:28:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_require_safe): destroys barrier after successfully
-	  loaded, to get rid of loading same library again.  [ruby-core:19798]
-
-	* thread.c (rb_barrier_wait): can not wait destroyed barrier.
-
-	* thread.c (rb_barrier_destroy): destroys barrier so that no longer
-	  waited.
-
-Tue Nov 11 23:02:27 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/ruby.1 (RUBYOPT): wrote which option can appear.
-	  (--yydebug): wrote "do not use".
-	  (--dump): wrote "do not use".
-
-Tue Nov 11 21:22:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic#check_path): REL_PATH should a
-	  symbol.  [ruby-core:19805]
-
-Tue Nov 11 20:49:29 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* configure.in: fix SEGV on Mac OS X 10.5.3 with pthread.
-	  a patch from Wataru Kimura in Bug #193 [ruby-core:17333].
-
-Tue Nov 11 20:39:27 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (inspect): reverted the previous change.
-
-Tue Nov 11 17:35:25 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_accept): secure fd before accept because if
-	  error causes in securing, cannot restore the state of accepted
-	  socket.
-	  fixed [ruby-core:19728]
-
-Tue Nov 11 14:40:40 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: unnecessary setup method
-	  (setup_really_needed?) removed
-
-Tue Nov 11 14:25:25 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans, macgreek-tbl.rb, macroman-tbl.rb,
-	  macromania-tbl.rb, macturkish-tbl.rb, macukraine-tbl.rb,
-	  ibm437-tbl.rb, ibm852-tbl.rb, ibm855-tbl.rb, ibm857-tbl.rb,
-	  ibm860-tbl.rb, ibm861-tbl.rb, ibm862-tbl.rb, ibm863-tbl.rb,
-	  ibm865-tbl.rb, ibm866-tbl.rb, ibm869-tbl.rb, ibm775-tbl.rb:
-	  new single-byte transcodings (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-Tue Nov 11 13:20:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_r): moved from
-	  bigdecimal/util, converted into C.  [ruby-dev:36805]
-
-Tue Nov 11 07:55:57 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (inspect): changed the format.
-
-Mon Nov 10 17:34:50 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/sdbm/test_sdbm.rb (TestSDBM#test_index): Reflect the method
-	  name change from #index to #key and remove a duplicated test
-	  method.
-
-Mon Nov 10 10:50:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator.delegating_block): should not refer
-	  DelegateClass specific @delegate_dc_obj.  a patch from Erik
-	  Hollensbe in [ruby-core:19671].
-
-Mon Nov 10 09:54:21 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (ifs_open_socket): should retry without proto_buffer
-	  if cannot find the suitable protocol. a patch from Heesob Park.
-	  fixed [ruby-core:19713]
-
-Sun Nov  9 13:04:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_initialize_m): avoid unnecessary array
-	  allocation.
-
-Sun Nov  9 04:10:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_dump.c (control_frame_dump): suppresses finished method name.
-
-Sun Nov  9 00:30:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (thread_timer): checks working flags again.
-
-Sun Nov  9 00:02:01 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session/pstore.rb: fix indentation.
-
-Sat Nov  8 23:47:45 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session.rb (FileStore): use marshalized data.
-
-	* test/cgi/session_dir: add a session directory in test.
-
-	* test/cgi/test_cgi_session.rb: add a test.
-
-Sat Nov  8 21:57:03 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session.rb: remove debug code.
-
-Sat Nov  8 21:33:53 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/session.rb: fix indentation.
-
-Sat Nov  8 18:11:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/webrick/httpproxy.rb (WEBrick::HTTPProxyServer#do_CONNECT):
-	  use #bytesize instead of #size.  a patch submitted from
-	  raspberry lemon in [ruby-core:18571].
-
-	* lib/webrick/httpauth/digestauth.rb, lib/webrick/httpproxy.rb,
-	  lib/webrick/httprequest.rb, lib/webrick/httpservlet/cgi_runner.rb,
-	  lib/webrick/httpservlet/abstract.rb, lib/webrick/httpresponse.rb,
-	  lib/webrick/httpservlet/cgihandler.rb, lib/webrick/utils.rb: ditto.
-
-Sat Nov  8 17:31:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_ungetc): ungetc position should
-	  not be changed from 1.8.  [ruby-core:19632]
-
-Sat Nov  8 17:15:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser#make_switch): 1.9 Symbols respond
-	  to :match.  a patch from keith cascio, <keith at ucla.edu>.
-	  [ruby-core:19730]
-
-Sat Nov  8 12:10:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/gdbm/gdbm.c (fgdbm_index): make #index warn like Hash.
-	  [ruby-dev:37039]
-
-	* ext/sdbm/init.c (Init_sdbm): typo fixed.  [ruby-dev:37039]
-
-Sat Nov  8 07:07:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: detect stdio buffer pointers for uClibc.  a patch
-	  from Brian Candler <B.Candler at pobox.com> in [ruby-core:12020].
-	  [ruby-core:19713]
-
-Sat Nov  8 06:51:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dbm/dbm.c (fdbm_index): make #index warn like Hash.
-
-	* ext/dbm/dbm.c (fdbm_key): new method.
-
-	* ext/sdbm/init.c: ditto.
-
-Sat Nov  8 06:20:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c: curses encoding should obey locale.
-
-	* ext/curses/curses.c (curses_getch): 1.9 getch should return one
-	  character string for single byte string.  wchar_t support may
-	  follow in the future.
-
-Sat Nov  8 05:46:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/io.h (rb_io_t): added write_lock to serialize.
-	  [ruby-core:19668]
-
-	* gc.c (gc_mark_children): mark write_lock.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): Mutex also needs to be
-	  deferred.
-
-	* io.c (io_fflush, io_binwrite, fptr_finalize): serializes writing.
-
-Sat Nov  8 05:31:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* safe.c (safe_setter): add warning for $SAFE=3.
-
-Sat Nov  8 01:48:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (rb_thread_create_timer_thread): do not wait never
-	  coming signal if failed to create timer thread.
-
-	* thread_pthread.c (native_cond_timedwait): returns error code.
-
-	* thread_pthread.c (thread_timer): typo fixed.
-
-Sat Nov  8 01:14:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (thread_timer, rb_thread_create_timer_thread):
-	  handshakes properly.
-
-Fri Nov  7 22:51:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* inits.c (rb_call_inits): do not repeat.
-
-Fri Nov  7 22:46:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (thread_timer): initializes mutex each time.
-
-Fri Nov  7 21:23:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_win32.c (thread_start_func_1): use already gotten stack info.
-
-Fri Nov  7 12:26:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb.rb (IRB::Irb#eval_input): remove extra  @context.prompt_i.
-	  [ruby-core:19718]
-
-Fri Nov  7 11:55:30 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* nkf.c: update to r1.188. fixes for 16bit environment.
-
-Fri Nov  7 07:43:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_timer): pthread_cond_timedwait returns ETIMEDOUT
-	  when timed out.
-
-Fri Nov  7 07:32:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb: support Rational and Complex as 1.8
-	  does.  a patch from Hiroshi Moriyama in [ruby-dev:36899].
-
-Fri Nov  7 07:12:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (thread_timer): uses pthread_cond_timedwait always
-	  instead of pthread_kill.
-
-Fri Nov  7 06:58:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (Init_String): remove Symbol#===.  [ruby-dev:37026]
-
-Fri Nov  7 04:02:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_timer): uses timedwait on cygwin.
-
-Fri Nov  7 02:00:12 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/rexml/entity.rb (unnormalized): do not call
-	  document.record_entity_expansion if document is nil.
-	  see <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=502535>.
-	  Thanks, Naohisa Goto.
-
-	* test/rexml/test_document.rb: ditto.
-
-Fri Nov  7 01:24:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: binary encoding spec is no longer needed in 1.9.
-
-Thu Nov  6 22:21:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_stop_timer_thread): terminates timer thread
-	  immediately.
-
-Thu Nov  6 21:21:46 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (fole_s_connect, fole_initialize,
-	  folevariant_initialize): check argument type of WIN32OLE.connect,
-	  WIN32OLE.new, WIN32OLE_VARIANT.new.
-
-	* test/win32ole/test_win32ole.rb (test_s_new_exc, test_s_connect_exc):
-	  ditto.
-
-	* test/win32ole/test_win32ole_variant.rb (test_s_new_exc): ditto.
-
-	* test/win32ole/test_win32ole_method.rb: add assertion of
-	  WIN32OLE_METHOD.new.
-
-Tue Nov  4 13:08:01 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/test/unit.rb (Test::Unit.setup_argv): now can specify ``-xname''
-	  instead of ``-x name''.
-
-Tue Nov  4 08:00:00 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* test/zlib/test_zlib.rb(test_readchar): compare in same type.
-
-Tue Nov  4 03:28:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_join): do not repeat self in a recursive array.
-	  [ruby-dev:37019]
-
-Tue Nov  4 01:56:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_mutex_synchronize): fixed prototype.
-
-	* thread.c (rb_mutex_synchronize): fixed function name.
-
-Mon Nov  3 16:32:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing.h: needs RUBY_EXTERN instead of extern for mswin.
-
-Mon Nov  3 13:01:13 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* array.c (rb_ary_take_first_or_last): renamed rb_ary_partial more
-	  appropriately.
-	  (ary_take_pos_flags): new enum. makes the fourth argument of
-	  rb_ary_take_first_or_last more descriptive.
-	  (rb_ary_partial): renamed rb_ary_partial0 more appropriately.
-	  takes a new parameter klass for what class to instantiate.
-
-Mon Nov  3 13:00:26 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* range.c (rb_range_beg_len): rb_raise takes C values as arguments.
-	  [BUG] ranges turned into other value in a message of RangeError.
-
-Mon Nov  3 00:36:44 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_event.rb: rename test class.
-
-	* test/win32ole/test_win32ole_variant_outarg.rb: add in order
-	  to use ADO instead of Internet Explorer.
-	  remove test/win32ole/test_win32ole_variant_with_ie.rb.
-
-	* test/win32ole/orig_data.csv: ditto.
-
-Sun Nov  2 23:08:08 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_err_in_callback.rb: add teardown.
-
-Sun Nov  2 22:12:41 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_event_free): invoke IConnectionPoint::Unadvise
-	  before invoking IConnectionPoint::Release.
-
-	* test/win32ole/test_win32ole_event.rb, test/win32ole/err_in_callback.rb,
-	  test/win32ole/test_err_in_callback.rb: Use ActiveX Data Object
-	  Library instead of InternetExplorer.
-
-Sun Nov  2 22:06:55 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* win32/Makefile.sub: add RUNRUBYOPT. [ruby-dev:37009]
-
-Sun Nov  2 16:41:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (Init_zlib): defines readbyte instead redefining
-	  readchar.
-
-Sat Nov  1 07:09:40 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb: Don't require rubygems/defaults.rb.
-
-Fri Oct 31 21:58:50 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/converter.rb (RSS::Converter): use String#encode.
-
-Fri Oct 31 21:28:14 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/webrick/httpauth/digestauth.rb
-	  (WEBrick::HTTPAuth::DigestAuth#initialize): fix typo.
-
-Fri Oct 31 18:51:42 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_array.rb (test_array_subclass): test for r20076.
-
-Fri Oct 31 18:42:19 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* array.c (ary_partial0): recovers the mistakenly changed feature at r19723.
-	  Array#[m,n] had returned an Array even for an instance of a
-	  subclass.
-
-Fri Oct 31 18:05:05 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans, maccroatioan-tbl.rb,
-	  maccyrillic-tbl.rb, maciceland-tbl.rb: new single-byte
-	  transcodings (from Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added tests for the above
-	  (from Yoshihiro Kambayashi)
-
-Fri Oct 31 12:51:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dir.c (dir_globs): need taint check.  reported by steve
-	  <oksteev at gmail.com>
-
-Fri Oct 31 12:42:45 2008  wanabe  <s.wanabe@gmail.com>
-
-	* array.c (rb_ary_decrement_share): fix to work recycling
-	  shared-array without the following.  [ruby-dev:36991]
-
-	* array.c (ary_make_substitution): don't recycle substitution array.
-
-Fri Oct 31 12:27:52 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec: supports that the build directory != srcdir.
-
-Fri Oct 31 11:35:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_set_default_internal): no alias "internal" if
-	  default internal is not set.  [ruby-dev:37000]
-
-Fri Oct 31 08:16:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): delays setting safe level.
-	  [ruby-dev:36997]
-
-Thu Oct 30 21:32:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_permutation): hide temporal array.
-
-Thu Oct 30 14:45:45 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans: refactoring to make it easier
-	  to add more transcodings (with Yoshihiro Kambayashi)
-
-	* enc/trans/iso-8859-1-tbl.rb: new file to avoid having to
-	  treat ISO-8859-1 as special
-
-Thu Oct 30 14:10:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): templates a, A, Z should propagate encoding
-	  of original strings.  templates b, B, h, H brings ASCII-8BIT to
-	  the result.
-
-Thu Oct 30 10:34:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (moreswitches): splits option string and passes arguments.
-
-	* ruby.c (proc_options): checks if allowed in RUBYOPT.
-
-	* ruby.c (process_options): allows long style options in RUBYOPT.
-
-	* ruby.c (load_file_internal): ditto in shebang.  [ruby-dev:36979]
-
-Thu Oct 30 09:31:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_locale_encoding): makes an alias for locale.
-	  [ruby-dev:36976]
-
-	* encoding.c (rb_enc_set_default_external): ditto for external.
-
-	* encoding.c (rb_enc_set_default_internal): ditto for internal.
-
-Thu Oct 30 03:30:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (load_file_internal): should not set script encoding to
-	  ASCII-8BIT.
-
-	* ruby.c (load_file_internal): do not auto convert scripts even
-	  when default_internal is set.  [ruby-core:19579]
-
-Thu Oct 30 02:20:33 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_sort_bang): remove SEGV when replacing array with
-	  embedded one during sort.  [ruby-dev:36983]
-
-	* test/ruby/test_array.rb (test_sort!): add tests for above.
-
-Thu Oct 30 01:44:23 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: add some tests.
-
-Thu Oct 30 01:32:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_splice): remove redundant check.
-
-Thu Oct 30 01:24:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_str_cmp): fix condition which always returned true
-	  because ENCODING_GET returns unsigned long.
-
-Thu Oct 30 01:10:32 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb (test_permutation): add a test that replaces
-	  array during permutation.
-
-Wed Oct 29 23:31:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_check_dummy_enc): new function to check dummy
-	  encoding.
-
-	* string.c (rb_str_upcase_bang): case conversion functions should
-	  not be applicable to strings in dummy encoding.  [ruby-dev:36985]
-
-Wed Oct 29 23:57:29 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_sort_bang): replacing array during sort broke
-	  invariant of array.  [ruby-dev:36983]
-
-Wed Oct 29 21:06:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_rewind): should reset fptr->readconv if it's
-	  available.
-
-	* io.c (more_char): clear readconv at EOF.
-
-	* test/ruby/test_file.rb: should not read after EOF.  use rewind
-	  instead.
-
-Wed Oct 29 20:45:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/webrick/utils.rb (start_server): provide a reference to log of
-	  webrick.
-
-	* test/webrick/test_httpproxy.rb, test/webrick/test_httpauth.rb,
-	  test/webrick/test_cgi.rb, test/webrick/test_httpserver.rb,
-	  test/webrick/test_server.rb, test/webrick/test_filehandler.rb: use
-	  webrick log as an assertion message.
-
-Wed Oct 29 16:41:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_pack): set encoding from packing string and UTF-8 for
-	  "U".  [ruby-core:19590]
-
-Wed Oct 29 15:50:00 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
-
-	* complex.c (imp1, imp2): should declare type.
-	  [BUG] at IA-64
-
-Wed Oct 29 14:36:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (revision.h): have to be updated daily or by non-trivial
-	  commits.
-
-Wed Oct 29 13:18:02 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* README, README.ja: Update the portability section.
-
-Wed Oct 29 13:02:17 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in (rb_cv_lib_xpg4_needed): Drop legacy FreeBSD
-	  support regarding libxpg4.  Those old versions of FreeBSD
-	  shipped with the library don't have a working pthread library
-	  anyway.
-
-Wed Oct 29 11:50:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (dln-a-out): cannot make shared library nor work with
-	  ELF.  [ruby-core:19571]
-
-Wed Oct 29 11:00:25 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_open): shouldn't seek here.
-
-	* win32/win32.c (rb_w32_write): write to the end of the file when
-	  FAPPEND is specified.
-
-Wed Oct 29 09:30:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file_internal): cache common interned IDs.
-
-Wed Oct 29 00:43:39 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: uses macro in declarations.
-
-Wed Oct 29 00:26:00 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_open): need to seek to the end of the file when
-	  O_APPEND is specified.
-
-Wed Oct 29 00:08:05 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* math.c (rb_math_{atan2,cos,cosh,hypot,log,sin,sinh,sqrt}): added.
-
-	* complex.c: follows the above change.
-
-Tue Oct 28 23:29:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (kanji_convert): output unicode chars.
-	  [ruby-dev:36957]
-
-	* ext/nkf/nkf-utf8/nkf.c (numchar_getc): increase buffer size.
-	  reported and patched at [ruby-dev:36957] by mame.
-
-Tue Oct 28 23:03:46 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/test_proc.rb: filled all patterns for testing
-	  vm_yield_setup_args.
-
-Tue Oct 28 23:05:35 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: continues to support canonicalization *unofficially*
-	  for an odd library mathn for the time being (only 1.9.x).
-	  since grand mathn must be very very special library for us.
-
-	* rational.c: ditto.
-
-	* ext/mathn/*/*: follow the above changes.
-
-Tue Oct 28 21:31:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (parser_yylex): check EOF explicitly.
-
-Tue Oct 28 20:59:12 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (extract_binmode): new function to extract binmode/textmode
-	  options from hash.
-
-	* io.c (rb_io_extract_modeenc): use above function.
-
-	* io.c (rb_io_s_pipe): recognize binmode/textmode options.
-
-Tue Oct 28 20:15:49 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (make_readconv): now can specify the size of cbuf.
-
-	* io.c (read_all, appendline, io_getc, rb_io_ungetc): follow above
-	  change.
-
-Tue Oct 28 19:00:51 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_pipe_exec): internal fds should be always
-	  binmode.
-
-Tue Oct 28 17:21:18 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* tool/make-snapshot.rb: merged from ruby_1_9_1.
-
-Tue Oct 28 16:56:31 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* gem_prelude.rb: merged from ruby_1_9_1 branch.
-	  considers --program-suffix and prefix configure options.
-
-	* lib/rubygems/defaults.rb: ditto.
-
-	* test/rubygems/test_gem.rb (@default_dir_re): ditto.
-
-Tue Oct 28 16:13:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: use String#bytesize.
-
-Tue Oct 28 09:51:48 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bootstraptest/test_thread.rb: ignore some exceptions.
-	  [ruby-dev:36951]
-
-Tue Oct 28 09:19:40 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (RUNRUBY): now ruby requires something from
-	  gem_prelude, so need to set library path.
-
-Mon Oct 27 22:29:11 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* vm_insnhelper.c (vm_yield_setup_args): supports optional parameters.
-	  Fixed [ruby-core:19503].
-
-	* vm_insnhelper.c (vm_yield_setup_block_args): a new function. extracted
-	  from vm_yield_setup_args.
-
-	* vm_insnhelper.c (vm_yield_setup_block_args_complex): ditto.
-
-	* test/ruby/test_proc.rb: added tests for arguments on a Proc from
-	  Kernel#proc called.
-
-Mon Oct 27 20:03:05 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/mathn/complex/complex.c: no need to define rb_cComplex because
-	  it's already defined at $(srcdir)/complex.c.
-
-	* ext/mathn/rational/rational.c: no need to define rb_cRational because
-	  it's already defined at $(srcdir)/rational.c.
-
-Mon Oct 27 15:58:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file): preserves $..  [ruby-dev:36937]
-
-	* io.c (argf_init): initial value of $. should be 0.
-	  see [ruby-dev:36937].
-
-Mon Oct 27 15:38:38 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/minitest/test_mini_test.rb
-	  (test_assert_raises_triggered_different): the test failed when a
-	  file path in the backtrace contains something except [\w\/\.],
-	  e.g. hyphen, Japanese characters or backslash.
-
-	* test/minitest/test_mini_test.rb
-	  (test_assert_raises_triggered_subclass): ditto.
-
-Mon Oct 27 15:32:08 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/minitest/test_mini_test.rb: fixed that r19958 made
-	  test-all fail when the ruby was built at $(srcdir).
-
-Mon Oct 27 12:04:58 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/ruby/envutil.rb: reverted the changeset 19948 because it
-	  concealed unexpected behaviours of ruby.
-
-	* test/ruby/test_io.rb: ditto.
-
-Mon Oct 27 12:02:53 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ext/nkf/nkf.c (rb_nkf_convert): should specify type of variable.
-
-Mon Oct 27 11:34:56 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/minitest/test_mini_test.rb (test_filter_backtrace):
-	  fixed failure on Ruby built at out of $(srcdir).
-
-	* test/minitest/test_mini_test.rb (test_Filter_backtrace_unit_starts):
-	  ditto.
-
-Mon Oct 27 10:02:47 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (read_all): the 3rd argument maybe Qnil.
-
-Mon Oct 27 01:29:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/nkf/test_nkf.rb: add a test for [ruby-dev:36909].
-
-Mon Oct 27 01:05:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_convert): avoid GC.
-	  reported in [ruby-dev:36909] and patched [ruby-dev:36941] by mame.
-
-Sun Oct 26 21:28:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/json/test_json.rb: remove dependency on permutation gem.
-
-Sun Oct 26 19:18:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (blocking_region_{begin,end}): declared as inline.
-
-	* util.c (freedtoa): used only when MULTIPLE_THREADS is not defined.
-
-	* win32/win32.c (rb_w32_pipe): serial is DWORD.
-
-	* ext/etc/etc.c (sGroup): getgrent may not be available.
-
-Sun Oct 26 18:11:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/wait/{extconf.rb,wait.c}: needs sys/ioctl.h for fcntl on
-	  cygwin.
-
-Sun Oct 26 18:18:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gem_prelude.rb: disables debug and verbose flags to suppress failure
-	  messages.  interpolation does not occur inside single quotes.
-
-Sun Oct 26 18:42:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/envutil.rb (assert_in_out_err): disables builtin rubygems
-	  to get rid of the interference.
-
-	* test/ruby/test_io.rb (ruby): ditto.
-
-Sun Oct 26 13:30:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (read_all): use the given buffer to read when needs readconv.
-	  based on the patch by wanabe <s.wanabe AT gmail.com> at
-	  [ruby-dev:36931].
-
-Sun Oct 26 07:57:35 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*: Update to RubyGems 1.3.1 r1909.
-
-Sun Oct 26 07:35:56 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/minitest/unit.rb: Imported minitest 1.3.0 r4429.
-	* test/minitest/*: ditto.
-
-Sun Oct 26 02:16:29 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in ($MANTYPE): followed ruby.1, which had moved.
-
-	* instruby.rb (:man): ditto.
-
-	* mdoc2man.rb: fixed for the case Xr with 2 arguments.
-
-Sun Oct 26 01:42:45 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/irb.1: new manual page.
-
-Sun Oct 26 00:11:48 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* man/ruby.1: moved into man/. added some descriptions.
-
-	* man/goruby.1: new file.
-
-	* instruby.rb (:man): followed ruby.1.
-
-Sat Oct 25 20:05:22 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_profile_result): bug fix. The millisecond is 1/1000.
-
-Sat Oct 25 11:12:40 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ruby.c (usage): updated the description of -E option.
-
-Sat Oct 25 09:54:10 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb:  Fixed a bug in read_to_char() that would slurp
-	  whole files if the encoding was invalid.  It will now read
-	  up to 10 bytes ahead to find a valid character boundary or
-	  give up.  [ruby-core:19465]
-
-	* test/csv/test_features.rb, test/csv/test_table.rb, test/csv/test_row.rb:
-	  Loosened some tests to check for a compatible? Encoding instead
-	  of an exact Encoding.  [ruby-core:19470]
-
-Sat Oct 25 07:42:49 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc*: Update to RDoc 2.2.2 r192.
-
-Sat Oct 25 04:00:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/us_ascii.c (us_ascii_mbc_enc_len): made static.  a patch by
-	  Tadashi Saito <shiba AT mail2.accsnet.ne.jp> at [ruby-dev:36916]
-
-	* signal.c (signal_buff): made static.  a patch by Tadashi Saito
-	  <shiba AT mail2.accsnet.ne.jp> at [ruby-dev:36915]
-
-	* util.c (freedtoa): made static to get rid of name clash.  a patch by
-	  Tadashi Saito <shiba AT mail2.accsnet.ne.jp> at [ruby-dev:36913]
-
-	* util.c (ruby_dtoa): added prefix, ditto.
-
-Sat Oct 25 03:43:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (lambda): need to adjust lpar_beg for both of the parser and
-	  ripper.
-
-Sat Oct 25 01:29:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/mathn/rational/rational.c: undef duplicated macro definition
-	  first to shut up the warning.
-
-	* ext/mathn/rational/rational.c (rb_rational_new_mathn): specify
-	  omitted return value.
-
-Sat Oct 25 00:14:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sample): fixed sizes and randomness.
-
-Fri Oct 24 23:04:42 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* configure.in (sitedir): considers --program-prefix and
-	  --program-suffix.
-	  (vendordir): ditto.
-	  (rubyhdrdir): ditto.
-
-	* mkconfig.rb (CONFIG["rubylibdir"]): ditto.
-
-	* win32/Makefile.sub: ditto.
-
-	* instruby.rb (:rdoc): ditto.
-
-	* lib/rdoc/ri/paths.rb (RDoc::RI::Paths): ditto.
-
-Fri Oct 24 22:59:27 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb (test_sample): add tests for size of
-	  returned array and randomness.
-
-Fri Oct 24 21:50:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* id.h, template/id.h.tmpl (enum ruby_method_ids): reordered.
-
-Fri Oct 24 21:19:45 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* ext/mathn/rational.c: change several global functions.
-
-Fri Oct 24 21:05:38 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/html.rb: allow symbolized key.
-
-	* test/cgi/test_cgi_tag_helper.rb: add a test.
-
-Fri Oct 24 20:54:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (exts): renamed to get rid of the existent directory.
-
-Fri Oct 24 20:45:41 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* ext/mathn/rational.c: change several global functions to static
-	  function.
-
-Fri Oct 24 19:57:19 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_dump): should have removed commented out
-	  unnecessary code.  [ruby-cvs:27131]
-
-Fri Oct 24 19:16:36 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* id.h (enum ruby_method_ids): ISO C forbids comma at end of
-	  enumerator list.
-
-Fri Oct 24 18:29:00 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/mathn.rb: moved into ext/mathn/rational/rational.c and
-	  ext/mathn/complex/complex.c.
-	* ext/mathn: new mathn ext-libraries.
-
-Fri Oct 24 18:21:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_array.rb (TestArray#test_join): should restore
-	  global variable after the test.  [ruby-dev:36896]
-
-	* test/ruby/test_hash.rb (TestHash#test_to_s): ditto.
-
-Fri Oct 24 17:43:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (lambda): need to adjust lpar_beg for ripper as well.
-	  [ruby-dev:36702]
-
-Fri Oct 24 16:13:12 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (read_multipart): change field value as String
-	  from StringIO or Tempfile when multipart parse except file field.
-	  add files method that can get uploaded files. [ruby-dev:36547]
-
-	* test/cgi/test_cgi_multipart.rb: fix the test for core.rb.
-
-Fri Oct 24 14:22:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ext): split out the target for extension library.
-
-	* common.mk (encs): depends on enc and trans.
-
-Fri Oct 24 10:23:24 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_signal.rb (TestSignal#test_exit_action): Thread
-	  may terminate before sysread. [ruby-dev:36835]
-
-Thu Oct 23 22:06:23 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* distruby.rb: removed. "make dist" uses tool/make-snapshot for the 1.9
-	  series. distruby.rb has been no longer used.
-
-Thu Oct 23 17:30:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (rb_class_instance_methods): rdoc fixed.  [ruby-core:19458]
-
-Thu Oct 23 16:19:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/init.rb (IRB.load_modules): catch LoadError explicitly.
-	  a patch from Daniel Berger <Daniel.Berger at qwest.com> in
-	  [ruby-core:19451].  fix [ruby-core:19450]
-
-Thu Oct 23 16:16:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyport): check if the port range.
-	  [ruby-core:19460]
-
-Thu Oct 23 14:08:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyname): unuse unnecessary
-	  object.
-
-	* ext/socket/socket.c (sock_s_getservbyport): the port should be
-	  converted before the proto so that the #to_int of the former cannot
-	  alter the latter.
-
-Thu Oct 23 10:55:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_dump): use \u{ff} escape for UTF-8 encoding
-	  string.
-
-Thu Oct 23 09:26:22 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyport): cast to get rid of
-	  warning.
-
-Thu Oct 23 08:06:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c (sock_s_getservbyport): port should be
-	  network byte order.  a patch from Dave Thomas in [ruby-core:19454].
-
-Thu Oct 23 01:26:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_conv_enc_opts): new function to convert with
-	  specifying ecflags and ecopts.
-
-	* ext/zlib/zlib.c (gzfile_newstr): specify ecflags and ecopts for
-	  conversion using above function.
-
-	* ext/zlib/zlib.c (gzfile_newstr): use own rb_econv_t for dummy
-	  encoding to handling stateful encoding (e.g. iso-2022-jp).
-	  [ruby-dev:36857]
-
-	* ext/zlib/zlib.c (gzfile_getc): ditto.
-
-Thu Oct 23 01:24:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_tmpsrc): get rid of side effects.
-
-Thu Oct 23 00:10:01 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: separate data structure between rb_fiber_t and
-	  rb_context_t (rb_fiber_t includes rb_context_t).
-	  rb_fiber_t has double linked list of fibers in same threads.
-
-Wed Oct 22 17:25:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (pipe_open): remove unnecessary flush before fork.
-	  a patch from Kazuhiro NISHIYAMA <zn at mbf.nifty.com>
-	  in [ruby-dev:36840].
-
-Wed Oct 22 16:27:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_yield_setup_args): should not drop arguments
-	  corresponding to default parameters.
-
-Wed Oct 22 14:59:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_larglist): should not allow semicolon separated local
-	  variable declarations if formal argument list is not surrounded
-	  by parentheses, mostly because semicolon outside of parentheses
-	  appears to terminate the expression.
-
-Wed Oct 22 14:52:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_external_str_new_with_enc): no implicit strlen call.
-	  [ruby-dev:36854]
-
-	* string.c (rb_external_str_new_cstr): new function to create
-	  string from external NUL terminated C string.
-
-	* string.c (rb_locale_str_new_cstr): ditto.
-
-	* ext/readline/readline.c: now use rb_locale_str_new_cstr().
-
-	* test/sdbm/test_sdbm.rb (TestSDBM#test_delete_with_block):
-	  deleted key to the block may be a copy of specified key.
-
-	* test/dbm/test_dbm.rb (TestDBM#test_delete_with_block): ditto.
-
-Wed Oct 22 13:16:47 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (unescape_escaped_nonascii): back out the last change on
-	  the function.  [ruby-dev:36818]
-
-Wed Oct 22 07:09:19 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (rb_gzreader_ungetc): should be able to unget
-	  Fixnum.
-
-	* ext/stringio/stringio.c (strio_ungetc): should convert unget
-	  string.
-
-	* ext/stringio/stringio.c (strio_ungetbyte): new method.
-
-Wed Oct 22 05:46:25 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/vm.h: write a comment.
-
-	* common.mk: remove vm.h from any rules.
-	  vm.h is not needed on this version.
-
-	* vm_core.h: ditto.
-
-Wed Oct 22 05:39:39 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y (arg_concat_gen): concat target node should be NODE_ARRAY.
-	  [ruby-core:19413]
-
-	* bootstraptest/test_method.rb: add tests.
-
-Wed Oct 22 00:29:13 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_rinda.rb (test_core_03_notify): Fixed test failures
-	  [ruby-dev:36837].
-
-Wed Oct 22 00:22:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_external_str_new_with_enc): wrong condition to
-	  calculate strlen().
-
-	* ext/readline/readline.c: add encoding support.
-
-Tue Oct 21 23:12:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_write): should convert writing
-	  string to the encoding of the buffer.
-
-	* hash.c (rb_any_hash): typo fixed.
-
-	* ext/zlib/zlib.c (rb_gzwriter_write): oops, IO string conversion
-	  need to be done by to_s.
-
-Tue Oct 21 22:38:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (open_key_args): should adjust argc, argv in struct
-	  foreach_arg.
-
-Tue Oct 21 21:52:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (rb_gzwriter_write): conversion should be done
-	  using to_str, not to_s.
-
-	* ext/zlib/zlib.c (rb_gzwriter_write): need proper conversion
-	  according to gz encoding.
-
-	* ext/zlib/zlib.c (rb_gzreader_ungetc): convert string encoding
-	  before unget.
-
-Tue Oct 21 21:33:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit.rb (assert_nothing_raised): raise with backtrace.
-
-Tue Oct 21 20:12:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_nothing_raised): set backtrace.
-
-Tue Oct 21 18:17:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c: remove obsolete prototype macros.
-
-	* ext/zlib/zlib.c (struct gzfile): add encoding field to gzfile
-	  structure.
-
-	* ext/zlib/zlib.c (rb_gzreader_getc): now works on characters.
-
-	* ext/zlib/zlib.c (rb_gzreader_getbyte): new method to retrieve
-	  single byte.
-
-	* ext/zlib/zlib.c (rb_gzreader_readbyte): ditto.
-
-	* ext/zlib/zlib.c (rb_gzreader_each_byte): renamed from each_char
-
-	* ext/zlib/zlib.c (rb_gzreader_ungetc): allow unget strings.
-
-	* ext/zlib/zlib.c (rb_gzreader_ungetbyte): renamed from ungetc.
-
-Tue Oct 21 13:28:42 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* io.c, include/ruby/intern.h (rb_io_ascii8bit_binmode): externed.
-
-	* ext/socket/socket.c (init_sock): use rb_io_ascii8bit_binmode()
-	  instead of rb_io_binmode().
-
-Tue Oct 21 13:17:39 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* mdoc2man.rb: moved into tools/.
-
-	* instruby.rb: followed the change of mdoc2man.
-
-Tue Oct 21 11:34:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (strip_glibc_option, map_charset): check if
-	  encoding is a string.  based on the patch by Hiroshi Moriyama at
-	  [ruby-dev:36811].
-
-	* test/iconv/test_basic.rb (test_invalid_arguments): added tests.
-
-Tue Oct 21 10:40:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_file_open_internal): should initialize fmode before using.
-
-Tue Oct 21 08:56:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regparse.c (parse_char_class): CCV_SB is only for single
-	  byte.  [ruby-dev:36786]
-
-Tue Oct 21 01:49:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_extract_modeenc): plain rb/wb should set ASCII-8BIT
-	  to the external_encoding.
-
-	* io.c (rb_file_open_internal): ditto.
-
-	* io.c (NEED_WRITECONV): no conversion when the external_encoding
-	  is ASCII-8BIT.
-
-	* io.c (do_writeconv): skip ASCII-8BIT.
-
-Tue Oct 21 00:51:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_ascii8bit_binmode): renamed from rb_io_binmode.
-	  (rb_io_binmode): don't change encoding conversion.
-	  (rb_io_binmode_m): call rb_io_ascii8bit_binmode.
-
-Mon Oct 20 21:19:00 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (read_multipart): file's encoding is ascii-8bit
-	  from file field of multipart form.
-
-Mon Oct 20 20:16:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (Init_zlib): add getbyte as an alias to getc.
-	  [ruby-dev:36801]
-
-Mon Oct 20 17:31:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (exc_equal): should not compare recursively.
-	  [ruby-dev:36796]
-
-Mon Oct 20 16:48:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/ruby.h (ExportStringValue): new macro to convert
-	  string in internal encoding to external to export.
-
-	* string.c (rb_str_export): new function to do conversion to
-	  external encoding.
-
-	* ext/sdbm/init.c: encoding conversion support.
-
-	* ext/dbm/dbm.c: ditto.
-
-Mon Oct 20 15:42:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_locale_str_new): new function to convert string
-	  from locale to internal encoding.
-
-Mon Oct 20 09:47:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/runner.rb: search srcdir/test/arg at first to find test/ruby
-	  directory when "ruby" is specified.
-
-Mon Oct 20 08:20:01 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: support Encoding.default_internal.
-
-	* ext/tk/tcltklib.c: ditto.
-
-	* ext/tk/extconf.rb: improve the strategy for searching Tcl/Tk headers.
-
-Mon Oct 20 00:57:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (Test::Unit.setup_argv): call given block for
-	  filtering files.
-
-	* test/runner.rb: search srcdir/test/arg, srcdir/arg.
-
-	* bin/testrb: show usage if no files given.
-
-Sun Oct 19 21:19:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (srcs): removed ID_H_TARGET.
-
-	* tool/generic_erb.rb: always overwrites if no if-change option.
-	  sends the result to stdout if no output option.
-
-	* template/id.h.tmpl: shows which token differs.
-
-Sun Oct 19 18:15:15 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans: adding WINDOWS-wwww encodings
-	  (wwww = 874/1250/1251/1253/1254/1255/1256/1257)
-	  (contributed by Yoshihiro Kambayashi)
-
-	* enc/trans/windows-wwww-tbl.rb: 8 new files
-	  (contributed by Yoshihiro Kambayashi)
-
-	* test/ruby/test_transcode.rb: added test_windows_wwww
-	  (contributed by Yoshihiro Kambayashi)
-
-Sun Oct 19 07:37:13 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb (log2,cbrt,frexp,ldexp,hypot,erf,erfc,gamma,lgamma):
-	  should be also provided as module function.  [ruby-dev:36787]
-
-Sun Oct 19 07:25:08 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* keywords, lex.c.src, opt_insn_unif.def, opt_operand.def: moved rarely changed
-	  input files for code generators into defs/ directory.
-
-	* Makefile.in (lex.c): followed keywords and lex.c.src.
-
-	* common.mk (parser.o): followed keywords.
-	  (INSNS): followed opt_*.def
-
-	* tools/instruction.rb: followed opt_*.def.
-
-Sun Oct 19 12:28:01 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* test/csv/*:  Renamed tc_* files to test_* to fit in within Ruby's
-	  testing process.
-
-Sun Oct 19 00:15:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_nothing_thrown): don't intern.
-
-Sat Oct 18 14:40:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_sadded): remove newly defined singleton method
-	  that should not exist after exception handling.  [ruby-dev:36569]
-
-Sat Oct 18 14:27:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (opt_block_arg): allow trailing comma after usual
-	  arguments.  not after block argument.
-
-Sat Oct 18 13:30:53 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_external_str_new): a new function to convert from
-	  external encoding to internal encoding.  if something went
-	  wrong, it returns a string with the external encoding.
-
-	* string.c (rb_external_str_new_with_enc): same as above besides
-	  you can specify the source encoding.
-
-	* ruby.c (ruby_set_argv): use rb_external_str_new()
-
-	* ruby.c (set_arg0, ruby_script): ditto.
-
-Sat Oct 18 04:08:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#initialize): now Tempfile.new takes
-	  keyword arguments to open().  [ruby-dev:36756]
-
-Sat Oct 18 17:10:10 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* tool/transcode-tblgen.rb: added set_valid_byte_pattern
-	  to reduce coupling between table generation script and
-	  specific encodings.
-
-	* enc/trans/single_byte.trans: using set_valid_byte_pattern
-
-Sat Oct 18 16:39:39 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: in transcode_search_path, eliminated a warning
-	  on cygwin about pathlen potentially not being initialized
-
-Sat Oct 18 13:40:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_nothing_thrown): implemented.
-
-Sat Oct 18 01:33:22 2008  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* common.mk: use added options for generic_erb.rb.
-
-Sat Oct 18 00:47:51 2008  wanabe  <s.wanabe@gmail.com>
-
-	* array.c: don't recycle shared-array while sort!.
-
-Fri Oct 17 22:04:38 2008  wanabe  <s.wanabe@gmail.com>
-
-	* array.c: recycle shared-array when it isn't referenced.
-
-Fri Oct 17 20:29:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_m): specify ARG_ENCODING_NONE instead of
-	  ARG_ENCODING_FIXED for Regexp.new("", nil, "n").  [ruby-dev:36761]
-
-	* test/ruby/test_regexp.rb (TestRegexp#test_initialize): test
-	  updated.
-
-Fri Oct 17 19:46:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/ifchange, win32/ifchange.bat: --timestamp option added.
-
-	* tool/generic_erb.rb: --timestamp, --output and --if-change options
-	  added.
-
-Fri Oct 17 18:33:12 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* array.c (ary_resize_capa): renamed RESIZE_CAPA.
-
-Fri Oct 17 18:16:51 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/bigdecimal/test_bigdecimal.rb (TestBigDecimal#test_sqrt_bigdecimal):
-	  test updated.  a patch from TAKANO Mitsuhiro <takano32 at jus.or.jp> in
-	  [ruby-dev:36736].
-
-Fri Oct 17 18:14:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (uncommon.mk): ignores failures at loading.
-
-	* test/rubygems/gemutilities.rb (RubyGemTestCase#build_rake_in):
-	  get rid of interference with other tests.
-
-Fri Oct 17 18:06:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c (str_transcode0): String#encode without argument now
-	  behave as if :undef => :replace, :invalid => :replace specified.
-
-	* transcode.c (rb_econv_prepare_opts): should preserve options in
-	  any case.
-
-Fri Oct 17 11:48:18 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/socket/socket.c (init_sock): sockets should be binmode.
-
-	* test/socket/test_tcp.rb (test_encoding): ditto.
-
-Fri Oct 17 10:26:13 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/insns2vm.rb: remove -Kn option in shebang line because it's
-	  inconsistent with -Ks commandline option in common.mk.
-
-Fri Oct 17 01:26:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_restartable0): in_pos and out_pos never be
-	  NULL, now.
-
-Fri Oct 17 00:39:19 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/test/unit.rb: sort the order of executing tests.
-
-Fri Oct 17 00:24:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_binmode): reset encoding conversion.
-
-Fri Oct 17 00:16:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (rb_getc, rb_io_fread, rb_io_fwrite, rb_read_pending):
-	  remove deprecated functions which do not work.  [ruby-dev:36697]
-
-Thu Oct 16 23:48:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk (TESTS): removed to re-enable test for minitest.
-
-Thu Oct 16 23:37:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_set_sequence): fix memory leak.
-
-Thu Oct 16 23:27:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_equal): avoid incompatible character
-	  encodings error.
-
-Thu Oct 16 23:23:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit.rb (assert_equal): failure message changed.
-
-Thu Oct 16 22:52:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit: removed test/unit.
-
-	* lib/test/unit.rb: new compatibility layer using minitest.
-
-	* bin/testrb: use above.
-
-	* test/runner.rb: ditto.
-
-Thu Oct 16 14:34:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, enc/depend (enc, trans): targets for sources.
-
-Thu Oct 16 14:30:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (lib): installs all files other than README etc.
-
-Thu Oct 16 09:48:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_m): changed the message to clarify the
-	  third option argument is now ignored.  [ruby-dev:36753]
-
-Thu Oct 16 08:14:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): no warning when default_external already
-	  set by -E.
-
-	* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_rubyopt):
-	  put -K after -E to set script encoding.
-
-Thu Oct 16 06:20:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_transcode.rb (TestTranscode#test_errors):
-	  String#encode now works without any argument. [ruby-dev:36740]
-
-Wed Oct 15 23:48:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* .gdbinit (rp): REGEXP handling fixed.
-
-	* string.c (rb_str_rindex_m): need not to call rb_enc_check on
-	  regexp.
-
-	* re.c (unescape_escaped_nonascii): try ASCII-8BIT encoding for
-	  broken strings.
-
-Wed Oct 15 23:11:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (DelegateClass): restored 1.8 behavior for
-	  DelegateClass as well.  [ruby-dev:36739]
-
-Wed Oct 15 22:19:14 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* array.c (RESIZE_CAPA): check whether len is longer than capacity.
-
-	* array.c (rb_ary_compact_bang): resize ary before changing capacity.
-	  fixed [ruby-dev:36704]
-
-Wed Oct 15 16:57:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* version.h (RUBY_DESCRIPTION): remove unnecessary space.
-
-Tue Oct 14 23:18:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator): simplified and restored 1.8
-	  behavior.  [ruby-dev:35986]
-
-Tue Oct 14 21:50:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (TESTS): skips minitest by default, since it interferes
-	  with test/unit.
-
-Tue Oct 14 21:36:29 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (load_conv_function51932): check
-	  having IMultiLanguage2 or IMultiLanguage. [ruby-dev:36716]
-
-	* ext/win32ole/extconf.rb: ditto.
-
-Tue Oct 14 20:45:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (Init_IO): $FILENAME and $* must be read-only.  [ruby-dev:36698]
-
-	* variable.c (*_getter, *_setter, *_marker): made public.
-
-	* include/ruby/ruby.h (rb_gvar_*_{getter,setter,marker}): declared.
-
-Tue Oct 14 20:32:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/single_byte.trans (transcode_tblgen_singlebyte): renamed
-	  from transcode_tblgen_windows.
-	  (transcode_tblgen_iso8859): use transcode_tblgen_singlebyte.
-
-Tue Oct 14 19:32:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (process_options): -U should be allowed in RUBYOPT
-	  environment variable.  [ruby-dev:36720]
-
-Tue Oct 14 14:11:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): -U can be followed by other options.
-
-Tue Oct 14 13:30:30 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/single_byte.trans: added windows-1252
-
-	* enc/trans/windows-1252-tbl.rb: new file
-	  (contributed by Yoshihiro Kambayashi)
-
-	* tool/transcode-tblgen.rb: listed windows-1252 as '1byte'
-
-	* test/ruby/test_transcode.rb: added test_windows_1252
-	  (contributed by Yoshihiro Kambayashi)
-
-Tue Oct 14 12:22:32 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_variable.rb (TestVariable#test_variable): add
-	  a test of [ruby-dev:36698].
-
-Tue Oct 14 11:14:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c (str_transcode0): should not raise error when
-	  default_internal is not set.  [ruby-core:19309]
-
-Tue Oct 14 11:14:26 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/net/pop.rb: check for invalid APOP timestamp. (CVE-2007-1558)
-	  [ruby-dev:36631]
-
-	* test/net/pop/test_pop.rb: ditto.
-
-Tue Oct 14 09:39:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (set_internal_encoding_once): check double contradicted
-	  specification of the encoding from command line.
-
-	* ruby.c (set_external_encoding_once): ditto.
-
-Tue Oct 14 08:28:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): allow reserved word to be keyword argument.
-
-Mon Oct 13 19:07:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (token_info_pop): show source filename. [ruby-dev:36710]
-
-Mon Oct 13 08:59:08 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (load_conv_function51932): support
-	  CP51932 on cygwin and mingw32. thanks to arton.
-
-	* test/win32ole/test_win32ole.rb (test_cp51932): ditto.
-
-Mon Oct 13 07:54:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): add -U command line option to specify
-	  utf-8 as default_internal.
-
-Mon Oct 13 07:42:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c (str_transcode0): String#encode() with no encoding
-	  specified transcode the string into Encoding.default_internal.
-	  inspired by [ruby-core:19298].
-
-Sun Oct 12 18:00:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (set_ole_codepage, ole_cp2encoding,
-	  ole_wc2mb, ole_vstr2wc, ole_mb2wc): support CP51932 (only mswin32).
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Sun Oct 12 12:03:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_insnhelper.h (ruby_vm_redefined_flag): apply optimization
-	  patch proposed by Paul Brannan.  [ruby-core:19171]
-
-Sun Oct 12 09:46:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* strftime.c (rb_strftime): suppressed warnings on cygwin.
-
-Sat Oct 11 19:49:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_prepare): use utf-8 encoding directly.
-
-Sat Oct 11 10:20:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (CLEANINGS): uses escaped form tabs to preventing the
-	  confusion.  [ruby-talk:317345]
-
-Sat Oct 11 08:51:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (Rake::Application#standard_exception_handling): removed
-	  unnecessary SystemExit, and exits with false instead of system
-	  dependent value.  [ruby-talk:317330]
-
-Sat Oct 11 03:54:05 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y: optimize 'for' statement when one variable given.
-
-	* benchmark/bm_loop_for.rb: added.
-
-	* benchmark/bm_loop_times.rb: modified.
-
-Sat Oct 11 12:09:05 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv/csv.rb:  Added support for Encoding::default_internal.
-	* lib/csv/csv.rb:  Switched to new Hash syntax.
-
-Fri Oct 10 22:16:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (comment_at_top): needed for ripper too.
-
-Fri Oct 10 22:07:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby.h: updated macros for headers.  [ruby-core:19275]
-
-Fri Oct 10 19:21:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (magic_comment_encoding): warns when ignored.
-
-	* parse.y (parser_magic_comment): replaces '-' with '_'.
-
-	* parse.y (parser_yylex): allows magic comments indented and the
-	  second line or later.
-
-Fri Oct 10 17:26:50 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/ext/parser/parser.c (JSON_parse_string):
-	  associate encoding.
-
-Fri Oct 10 10:18:21 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/test/*: reverted back to test/unit.
-	* test/test/*: ditto
-	* lib/minitest/*: Imported minitest 1.3.0 r4333.
-
-Fri Oct 10 03:41:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): check if codepoint for %c is valid.
-	  [ruby-dev:36691]
-
-Fri Oct 10 01:55:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_names): minor improvement.
-
-Fri Oct 10 00:21:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (ParseError.filter_backtrace): removes internal
-	  backtrace.
-
-Fri Oct 10 00:11:16 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* transcode.c (rb_econv_add_converter): remove unnecessary NULL check.
-
-Thu Oct  9 23:53:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-c-mode): buffer may not have file
-	  name.
-
-Thu Oct  9 23:30:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* process.c (run_exec_dup2): fix resource leak.
-
-Thu Oct  9 23:19:02 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* process.c (rb_run_exec_options): fix resource leak.
-
-Thu Oct  9 22:13:58 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_module.rb (test_remove_class_variable): add a test
-	  for Class#remove_class_variable.
-
-	* test/ruby/test_object.rb (test_remove_instance_variable): add a test
-	  for Object#remove_instance_variable.
-
-Thu Oct  9 22:04:38 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* variable.c (rb_mod_remove_cvar): fix r19711.
-
-Thu Oct  9 21:17:50 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/syck.c (syck_lookup_sym): remove reading uninitialized
-	  variable.
-
-Thu Oct  9 16:34:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/ext/generator/extconf.rb: fix target.
-
-	* ext/json/ext/parser/extconf.rb: ditto.
-
-Thu Oct  9 14:37:59 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* include/ruby/ruby.h: embeds the elements of an array into its
-	  struct RArray for # of elements <= 3.
-
-	* array.c: ditto.
-
-	* gc.c (gc_mark_children): following the change of struct RArray.
-
-	* ext/tk/tcltklib.c (ip_ruby_cmp): ditto.
-
-	* parse.y (coverage): ditto.
-
-	* proc.c (curry): ditto.
-
-	* .gdbinit: ditto.
-
-Thu Oct  9 11:29:33 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): new instance method Encoding#names,
-	  returns its name and alias names.
-
-	* encoding.c (enc_names): defined for Encoding#names.
-
-	* encoding.c (enc_names_i): defined for enc_names.
-
-Thu Oct  9 08:47:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_thread_wait_fd_rw): should not block by select if
-	  there's only one thread living.  fixed [ruby-dev:36646].
-
-Wed Oct  8 20:59:52 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_init_cp): initialize WIN32OLE.codepage
-	  according to Encoding.default_internal and
-	  Encoding.default_external.
-
-Wed Oct  8 17:02:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/generator.rb (utf8_to_json):
-	  process each unpacked Unicode character.
-
-Wed Oct  8 15:00:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/parser.rb
-	  (JSON::Pure::Parser#parse_string): force_encoding("UTF-8").
-
-Wed Oct  8 11:56:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb: assert_nothing_thrown,
-	  assert_raise, assert_not_equal, assert_no_match, assert_not_nil,
-	  assert_not_same are coming back as alias.
-
-Wed Oct  8 11:18:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (autoload_delete, autoload_file): should not delete
-	  autoload table, since it may be shared with duplicated modules.
-	  [ruby-core:19181]
-
-Wed Oct  8 02:38:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_default_internal_encoding): merged a patch from
-	  Michael Selig <michael.selig at fs.com.au> in [ruby-core:18985].
-
-	* io.c (rb_io_ext_int_to_encs): ditto.
-
-	* ruby.c (proc_options): support default internal encoding in -E
-	  option.
-
-Wed Oct  8 00:03:39 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (today,now): should produce own instances.
-	  [ruby-talk:317020]
-
-Tue Oct  7 16:43:51 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/generator.rb (utf8_to_json):
-	  force_encoding before gsub.
-
-Tue Oct  7 16:35:41 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/generator.rb (utf8_to_json):
-	  downcase the result of Unicode escape.
-
-Mon Oct  6 16:44:52 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::QueryExtension::initialize_query): fix the
-	  condition.
-
-	* test/cgi/test_cgi_core.rb: bug fix encoding.
-	  thanks to TAKANO Mitsuhiro <takano32 at jus.or.jp> .
-
-	* test/cgi/test_cgi_multipart.rb: temporary comment in.
-
-Mon Oct  6 15:22:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (gc_mark_children): ignores T_ZOMBIE.
-
-Mon Oct  6 12:45:20 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_module.rb (TestModule#_wrap_assertion): add
-	  definition.  is this really needed?
-
-	* test/ruby/test_module.rb (TestModule#test_mod_constants): should
-	  not depend on global Module constants.
-
-Mon Oct  6 12:38:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/test/unit/assertions.rb (Test::Assertions#assert_nothing_raised):
-	  should take optional message argument.
-
-Mon Oct  6 12:18:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): string comparison should be
-	  transitive.  [ruby-dev:36484]
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb#test_str_eq): test
-	  updated.
-
-Mon Oct  6 09:00:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/bigdecimal/test_bigdecimal.rb (test_sqrt_bigdecimal): test
-	  updated.  a patch from TAKANO Mitsuhiro <takano32 at jus.or.jp>
-	  in [ruby-dev:36669].
-
-Sun Oct  5 23:34:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb ($config_h): now always defines for old libraries.
-
-Sun Oct  5 23:06:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_mod_modfunc): method undefined in included module
-	  may not have nd_body.  [ruby-core:18738]
-
-Sun Oct  5 21:28:58 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/rational.rb: resolved conflicts of aliases.
-
-	* lib/mathn.rb: avoided some warnings.
-
-Sun Oct  5 18:51:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb: remove debug code introduced by previous change.
-
-Sun Oct  5 17:49:35 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/open-uri.rb (OpenURI.open_uri): set encoding to strio.
-
-Sun Oct  5 17:39:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_set_encoding): defined for
-	  StringIO#set_encoding.
-
-Sun Oct  5 11:24:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* eval.c: come back definition of environ.
-
-Sun Oct  5 09:19:49 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/utf8tbl.c: update table.
-
-Sat Oct  4 22:50:14 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* dln.c: Ruby no longer supports VMS.
-
-	* error.c: ditto.
-
-	* eval.c: ditto.
-
-	* eval_intern.h: ditto.
-
-	* include/ruby/defines.h: ditto.
-
-	* include/ruby/ruby.h: ditto.
-
-	* io.c: ditto.
-
-	* process.c: ditto.
-
-	* ruby.c: ditto.
-
-	* vms/config.h: removed.
-
-	* vms/vms.h: ditto.
-
-	* vms/vmsruby_private.c: ditto.
-
-	* vms/vmsruby_private.h: ditto.
-
-Sat Oct  4 22:44:23 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* dln.c: Ruby no longer supports Windows CE.
-
-	* eval.c: ditto.
-
-	* include/ruby/defines.h: ditto.
-
-	* include/ruby/win32.h: ditto.
-
-	* ruby.c: ditto.
-
-	* strftime.c: ditto.
-
-	* win32/Makefile.sub: ditto.
-
-	* win32/win32.c: ditto.
-
-	* ext/tk/extconf.rb: ditto.
-
-	* lib/fileutils.rb: ditto.
-
-	* test/fileutils/test_fileutils.rb: ditto.
-
-	* wince/*: removed.
-
-Sat Oct  4 22:35:06 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* dln.c: Ruby no longer supports MacOS 9 or before.
-
-	* eval.c: ditto.
-
-	* eval_intern.h: ditto.
-
-	* ext/extmk.rb: ditto.
-
-	* ext/tk/sample/tkextlib/treectrl/demo.rb: ditto.
-
-	* ext/tk/stubs.c: ditto.
-
-	* file.c: ditto.
-
-	* hash.c: ditto.
-
-	* include/ruby/defines.h: ditto.
-
-	* ruby.c: ditto.
-
-	* signal.c: ditto.
-
-	* vm_core.h: ditto.
-
-Sat Oct  4 22:30:28 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* dln.c: Ruby no longer supports MS-DOS.
-
-	* ext/sdbm/_sdbm.c: ditto.
-
-	* ext/sdbm/sdbm.h: ditto.
-
-	* gc.c: ditto.
-
-	* hash.c: ditto.
-
-	* include/ruby/defines.h: ditto.
-
-	* include/ruby/util.h: ditto.
-
-	* io.c: ditto.
-
-	* process.c: ditto.
-
-	* ruby.c: ditto.
-
-	* strftime.c: ditto.
-
-	* util.c: ditto.
-
-Sat Oct  4 22:14:15 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* djgpp/GNUmakefile.in: removed. Ruby no longer supports djgpp.
-
-	* djgpp/README.djgpp: ditto.
-
-	* djgpp/config.hin: ditto.
-
-	* djgpp/config.sed: ditto.
-
-	* djgpp/configure.bat: ditto.
-
-	* djgpp/mkver.sed: ditto.
-
-	* ext/Setup.dj: ditto.
-
-	* dln.c: removed djgpp supports.
-
-	* file.c: ditto.
-
-	* gc.c: ditto.
-
-	* io.c: ditto.
-
-	* process.c: ditto.
-
-	* ruby.c: ditto.
-
-	* signal.c: ditto.
-
-	* util.c: ditto.
-
-	* vm_core.h: ditto.
-
-	* lib/fileutils.rb: ditto.
-
-	* lib/mkmf.rb: ditto.
-
-	* ext/socket/socket.c: ditto.
-
-	* test/fileutils/test_fileutils.rb: ditto.
-
-	* test/ruby/test_env.rb: ditto.
-
-	* test/ruby/test_path.rb: ditto.
-
-Sat Oct  4 21:59:39 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* x68/_dtos18.c: removed. Ruby no longer supports human68k.
-
-	* x68/_round.c: ditto.
-
-	* x68/fconvert.c: ditto.
-
-	* x68/select.c: ditto.
-
-	* ext/Setup.x68: ditto.
-
-	* missing/x68.c: ditto.
-
-	* dln.c (dln_find_exe_r): removed human68k supports.
-	  (dln_find_1): ditto.
-
-	* lib/mkmf.rb: ditto.
-
-	* ext/extmk.rb (Init_ext): ditto.
-
-	* ext/socket/socket.c (init_sock): ditto.
-
-	* gc.c (GC_MALLOC_LIMIT): ditto.
-	  (rb_setjmp, rb_jmpbuf): ditto.
-	  (mark_current_machine_context): ditto.
-
-	* include/ruby/defines.h (PATH_ENV): ditto.
-
-	* io.c: ditto.
-
-	* process.c: ditto.
-
-	* ruby.c: ditto.
-
-	* test/ruby/test_env.rb: ditto.
-
-	* test/ruby/test_path.rb: ditto.
-
-	* LEGAL
-
-Sat Oct  4 19:02:36 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb: no need to require the "lib/rational.rb".
-
-Sat Oct  4 19:02:59 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_enc_get): don't replicate encoding.
-	  [ruby-dev:36575]
-
-Sat Oct  4 18:47:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_external_encoding): defined.
-
-	* ext/stringio/stringio.c (strio_internal_encoding): defined.
-
-	* ext/stringio/stringio.c (Init_stringio): define above.
-
-Sat Oct  4 15:52:17 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/mini/test_mini_test.rb: recovered.
-	  It had been temporarily removed at r19645.
-
-	* test/mini/test_mini_mock.rb: ditto.
-
-	* test/mini/test_mini_spec.rb: ditto.
-
-	* lib/test/**/*: replaced by miniunit.
-	  miniunit had been temporarily reverted at r19643 but
-	  now recovered.
-
-Sat Oct  4 15:33:26 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (gdb-ruby): new target. it runs ruby under controlled by
-	  gdb.
-
-	* common.mk (dist): accepts RELNAME variable as the second argument of
-	  make-snapshot.rb.
-
-Sat Oct  4 12:17:46 2008  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/irb/irb/ext/save-history.rb: change load_history using File.expand_path. see [ruby-dev:36660]. Thanks Kouhei Sutou.
-	* lib/irb/irb/context.rb: convert string Symbol of instance variable names in IRB:Context#inspect.
-
-Fri Oct  3 22:43:04 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/dl/extconf.rb ($distcleanfiles): added callback-?.c into
-	  the distclean list.
-
-Fri Oct  3 19:33:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure.rb (module JSON): remove Iconv dependency.
-
-	* ext/json/lib/json/pure/generator.rb (utf8_to_json): process as
-	  binary and remove Iconv dependency.
-
-	* ext/json/lib/json/pure/parser.rb (parse_string): ditto.
-
-Fri Oct  3 14:04:05 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/{configure.bat,setup.mak,Makefile.sub): add --program-prefix
-	  configure option support.
-
-Thu Oct  2 21:22:43 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::QueryExtension): delete MorphingBody
-	  and replace like as 1.8's in multipart reading.
-	  see [ruby-dev:36443],
-	  reference from CGIAlt http://cgialt.rubyforge.org/
-
-	* test/cgi/test_cgi_multipart.rb : fixed multipart test.
-
-Thu Oct  2 20:46:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_sub_bang): fix coderange.
-
-Wed Oct  1 22:54:09 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rexml/parsers/lightparser.rb, lib/debug.rb: remove unused when
-	  clauses.
-
-Wed Oct  1 22:43:59 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/xmlrpc, lib/rexml, test/ruby/test_array.rb,
-	  test/ruby/test_unicode_escape.rb, test/scanf/test_scanf.rb,
-	  test/rss/rss-assertions.rb: fix indentation to remove warning.
-
-Wed Oct  1 21:36:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): finalize deferred IO and Data.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): defers IO finalization.
-	  [ruby-dev:36646]
-
-Wed Oct  1 19:11:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (marshal_dump): fixed for check_dump_arg.
-
-	* marshal.c (marshal_dump): initializes dump_arg before any funcall.
-	  [ruby-dev:36648]
-
-Wed Oct  1 00:54:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_split_m): should use rb_str_subseq() which use
-	  offset and length by bytes.  [ruby-dev:36641]
-
-Wed Oct  1 00:29:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_settracefunc.rb (test_call, test_class): line number
-	  was changed at r19592.
-
-Wed Oct  1 00:20:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (check_exec_redirect): don't depend on rb_stdout and
-	  rb_stderr.
-
-Tue Sep 30 23:06:58 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/mini/test_mini_test.rb: removed.
-	  Temporarily removed the tests for miniunit because of
-	  they depend on the miniunit version of test/unit,
-	  where test/unit was temporarily reverted to the state
-	  before importing miniunit.
-
-	* test/mini/test_mini_mock.rb: ditto.
-
-	* test/mini/test_mini_spec.rb: ditto.
-
-Tue Sep 30 23:04:30 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/test/**/*: recovered.
-	  Temporarily reverts the changes of lib/test/unit/* in
-	  r19502 and r19501, in order to release 1.9.0-5.
-
-Tue Sep 30 23:00:05 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/test/unit.rb: removed.
-	  Temporarily reverts the changes of lib/test/unit/* in
-	  r19543, r19534 and r19503, in order to release 1.9.0-5.
-
-	* lib/test/unit/assertions.rb: ditto.
-
-	* lib/test/unit/deprecate.rb: ditto.
-
-	* lib/test/unit/error.rb: ditto.
-
-	* lib/test/unit/testcase.rb: ditto.
-
-Tue Sep 30 20:17:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_extract_modeenc): should honor value of the
-	  textmode: and binmode: options.
-
-Tue Sep 30 17:04:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/bigdecimal/test_bigdecimal.rb (test_sqrt_bigdecimal): wrong
-	  precision specification.  a patch from TAKANO Mitsuhiro
-	  <takano32 at jus.or.jp> in [ruby-dev:36634].
-
-Tue Sep 30 16:53:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): returns non zero.  [ruby-dev:36633]
-
-Tue Sep 30 16:52:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): add %<name>s style named argument
-	  support.  a patch from Yusuke Endoh <mame at tsg.ne.jp>
-	  in [ruby-dev:35851].
-
-	* sprintf.c (rb_str_format): add gettext style named format
-	  (%{name}) support.  inspired by [ruby-dev:35852].
-
-	* sprintf.c (GETNAMEARG): should raise KeyError exception when no
-	  named argument found.
-
-	* hash.c (rb_hash_fetch): export fetch function.
-
-Tue Sep 30 13:19:01 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* test/rubygems/test_gem_installer.rb: remove extra call to setup to
-	  fix ENV['HOME'] pollution.
-
-Tue Sep 30 13:04:11 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/mini/test.rb: Updated to 1.3.0 r4257.
-	* test/mini/*: added from r4257.
-
-Tue Sep 30 07:46:07 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* test/rdoc/test_rdoc_markup_attribute_manager.rb: Test with clean
-	  SPECIALS.
-	* test/rubygems/gemutilities.rb: Restore ENV['HOME'] after test.
-	* test/runner.rb: Pass -n argument down to miniunit.
-
-Tue Sep 30 01:02:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (token_info_push, token_info_pop): do nothing for evaled
-	  source.
-
-Tue Sep 30 00:47:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: constified.
-
-Mon Sep 29 23:32:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_subseq): don't use rb_str_drop_bytes for short
-	  string.
-
-Mon Sep 29 22:54:29 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/mathn.rb: added String#to_[rc].  moved def_canon.
-
-Mon Sep 29 20:41:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_subseq): use rb_str_drop_bytes if possible.
-
-Mon Sep 29 20:22:20 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/*.rb: imported additional tests and some adjustments.
-
-Mon Sep 29 20:13:05 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (fev_initialize): initialization
-	  handler instance variable.
-
-	* test/win32ole/test_win32ole_typelib.rb (test_s_typelibs):
-	  fix the warning of shadowing outer local variable.
-
-Mon Sep 29 19:59:00 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (rescue_callback): use rb_write_error
-	  instead of fprintf.
-
-Mon Sep 29 01:51:54 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rdoc/test_rdoc_info_formatting.rb (teardown): delete tmpdir for
-	  test.
-
-Mon Sep 29 00:30:20 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/html.rb (CGI::HtmlExtension::{radio_group, checkbox_group}):
-	  can specify the false as checked or selected value.
-	  [ruby-core:18306], [ruby-core:18307]
-
-	* test/cgi/test_cgi_tag_helper.rb: add a test.
-
-Sun Sep 28 23:08:38 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/html.rb (CGI::HtmlExtension::popup_menu):
-	  fix the calls #bytesize on array parameters. [ruby-core:18919]
-
-Sun Sep 28 22:44:26 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::parse): ignore illegal query params.
-	  [ruby-dev:36618]
-
-Sun Sep 28 22:05:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_set_sequence): check duplicated when clause.
-	  [ruby-dev:36616]
-
-Sun Sep 28 19:04:03 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/date/*.rb: imported a date test suite ruby 1.9 limited ed.
-
-Sun Sep 28 18:40:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mini/test.rb (MINI_DIR): loaded path is expanded.
-
-	* lib/mini/test.rb (assert_match): get rid of confusion of
-	  ruby-mode.el.
-
-Sun Sep 28 12:36:09 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_exec.c (vm_exec_core): add an UNLIKELY() hint.
-
-	* vm_insnhelper.h (BASIC_OP_UNREDEFINED_P): add a LIKELY() hint.
-
-Sun Sep 28 12:04:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_new): sets empty string to coderange 7bit.
-	  [ruby-core:18993]
-
-Sun Sep 28 09:39:48 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/mathn.rb ({Fixnum,Bignum,Float}#**): may produce complex
-	  value.
-
-Sun Sep 28 09:05:53 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv/csv.rb:  Worked around some minor encoding changes in Ruby
-	  pointed out by Nobu.
-
-Sun Sep 28 08:37:12 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/mathn.rb: a hack to provide canonicalization.  This must be
-	  temporary, but this seems to be not bad for the time being.
-
-Sat Sep 27 06:22:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (Module#rake_extension, String#ext, String#pathmap): use
-	  built-in methods.
-
-	* lib/rake.rb (String#pathmap): fixed typo in rdoc.
-
-Sat Sep 27 04:28:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rmext): preceding dots are not a part of extension.
-
-	* file.c (rb_file_s_extname): ditto.
-
-Sat Sep 27 03:15:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_jump_tag_but_local_jump): exc is not used if val is nil.
-
-Sat Sep 27 03:12:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (host_str): numeric address should be unsigned.
-	  [ruby-core:18971]
-
-Fri Sep 26 22:46:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (primary, brace_block): fix for line number.
-
-	* proc.c (rb_proc_location, rb_method_location): new methods
-	  {Proc,Method,UnboundMethod}#source_location.  [ruby-core:18452]
-
-Fri Sep 26 21:36:33 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h (RUBY_VM_CHECK_INTS_TH): add an UNLIKELY hint.
-
-Fri Sep 26 19:33:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_str_encode): renamed from
-	  rb_str_transcode.  [ruby-dev:36593]
-	  (rb_econv_has_convpath_p): renamed from rb_transcode_convertible.
-
-	* transcode.c: follow the renaming.
-
-	* io.c: ditto.
-
-Fri Sep 26 19:01:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/bigdecimal/test_bigdecimal.rb (test_inspect): fixed CPU bit
-	  size dependent test.  pointed out by TAKANO Mitsuhiro <takano32 AT
-	  jus.or.jp>.
-
-Fri Sep 26 18:57:33 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/pathname/test_pathname.rb: Fix use of deprecated methods.
-
-Fri Sep 26 18:39:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (dist): nothing is needed to run BASERUBY.
-
-	* tool/make-snapshot: new option -archname.
-
-Fri Sep 26 18:24:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el: safe customizable variables.
-
-Fri Sep 26 17:37:18 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* include/ruby/ruby.h (rb_mPrecision): removed.
-	  Precision module was temporarily removed at r19430.
-
-Fri Sep 26 17:25:10 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (dist): Changed its dependencies and action.
-
-Fri Sep 26 17:07:04 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* error.c (Init_syserr): moved to the template.
-	  (errno_missing): removed. fixed [ruby-dev:35958].
-
-	* defs/known_errors.def: added. extracted from Init_syserr.
-
-	* templates/known_errors.inc.tmpl: added. Template for Init_syserr.
-	  c.f. [ruby-dev:35958].
-
-	* tools/generic_erb.rb: added. general purpose mapper which maps
-	  data+template into source code.
-
-	* common.mk (error.$(OBJEXT), incs, known_errors.inc):
-	  Fixed dependencies.
-
-Fri Sep 26 17:02:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thlist_signal): clears the woken thread if nothing woke.
-
-	* thread.c (rb_barrier_wait): achieves the lock if no thread was
-	  waiting yet.
-
-Fri Sep 26 12:04:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/curses/curses.c: should include <ruby/io.h>.
-
-	* ext/io/wait/wait.c: ditto.
-
-	* ext/openssl/ossl.h: ditto.
-
-Fri Sep 26 11:34:08 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* variable.c (rb_define_hooked_variable): cast to get rid of compiler
-	  warnings.
-
-Fri Sep 26 11:05:41 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* transcode.c, include/ruby/encoding.c (rb_transcode_convertible):
-	  new function. checking the existence of converter.
-
-Fri Sep 26 10:35:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* variable.c (global_variable, struct trace_var): made function
-	  members more strict.
-
-Fri Sep 26 09:55:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby{io,sig}.h: moved to include/ruby/backward.
-
-Fri Sep 26 09:47:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/rubysig.h: old macros for backward compatibility.
-
-	* thread.c (BLOCKING_REGION): rewritten using helper functions.
-
-Fri Sep 26 03:03:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* vm_eval.c (Init_vm_eval): define module_eval, class_eval and eval
-	  here for rdoc.
-
-Fri Sep 26 00:40:30 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* range.c (range_inspect): fix SEGV for cyclic range object.
-	  [ruby-core:18835]
-
-Thu Sep 25 23:59:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk: dependency updated.
-
-Thu Sep 25 21:46:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_eUndefinedConversionError): renamed from
-	  rb_eConversionUndefinedError.
-	  (rb_eConverterNotFoundError): renamed from rb_eNoConverterError.
-
-Thu Sep 25 21:23:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* pack.c (pack_pack, pack_unpack): 'm0' format (base64) complies with
-	  RFC 4648.  It adds no line feed when encoding, and raise ArgumentError
-	  if the encoded string contains non-alphabet (including CR and LF).
-
-	* lib/base64.rb: added.  This provides encoding/decoding method for
-	  Base64 in standard RFC 2045, Base64 in standard RFC 4648 and ``Base 64
-	  Encoding with URL and Filename SafeAlphabet'' in RFC 4648.
-
-	* test_pack.c, test/base64/test_base64.rb: add tests for above.
-
-Thu Sep 25 21:00:32 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: fix btest-* rules [ruby-dev:36528].
-	  and remove obsolete rules.
-
-Thu Sep 25 20:27:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* class.c (rb_make_metaclass): [BUG] Fixed a bus error
-	  on the case for metaclass of a class which includes a
-	  module.
-
-Thu Sep 25 19:34:33 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* test/rubygems/*: Update some new tests to use build_rake_in.
-	* test/rubygems/gemutilities.rb: Fix broken merge of rake detection.
-
-Thu Sep 25 19:13:12 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*: Update to RubyGems 1.3.0 r1891.
-
-Thu Sep 25 18:40:42 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* class.c (rb_make_metaclass): Made class of class of class
-	  from Class into its own eigenclass. Now meta^(n)-class
-	  hierarchy regresses infinitely, again.
-	  (This feature was decided on developer-meeting-20080922.)
-
-Thu Sep 25 16:01:07 2008  Jim Weirich  <jim@tardis.local>
-
-	* lib/rake.rb: Update rake source to version 0.8.3.  This
-	  version includes some fixes for running Rake on windows.
-	  (1) better APPDATA/HOMExxx/USERPROFILE integration for
-	  system rakefiles, (2) Better handling of the :ruby command
-	  when installed in directory containing spaces.
-
-Thu Sep 25 11:22:51 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc*: Update to RDoc 2.2.1 r185.
-
-Thu Sep 25 02:08:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_mode_enc): make it static.
-
-Thu Sep 25 01:22:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mini/test.rb (Mini::Assertions#assert_raise): fixed typo.
-
-Wed Sep 24 23:39:00 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* test/cgi/test_cgi_multipart.rb : revert last change.
-	  ( deprecated is assert_raises. )
-	* test/cgi/test_cgi_core.rb      : ditto.
-	* test/cgi/test_cgi_header.rb    : ditto.
-
-Wed Sep 24 23:12:49 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::new, CGI::{accept_charset,accept_charset=}) :
-	  accept parameters either in a hash,
-	  string as a block. add the encoding validation process.
-	* test/cgi/test_cgi_core.rb : test for query encoding check.
-
-Wed Sep 24 22:58:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): raise exception when the encoding of
-	  the string is dummy.
-
-	* string.c (rb_str_rstrip_bang): remove nul characters even if the
-	  encoding of the string is not single byte optimizable.
-	  fixed [ruby-core:18844], reported by Michael Selig.
-
-Wed Sep 24 19:01:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): workaround for VC++8 x64.
-
-Wed Sep 24 17:44:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c (Init_Complex), rational.c (Init_Rational): undefines
-	  default #allocate methods which call the allocator.
-
-Wed Sep 24 17:02:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c (Init_Complex), rational.c (Init_Rational): ID_ALLOCATOR
-	  differs from :allocate, and invisible in ruby level.
-
-Wed Sep 24 15:58:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): removing mixed spaces and nuls at
-	  the end of strings.  [ruby-dev:36497]
-
-Wed Sep 24 15:13:04 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* test/cgi/test_cgi_multipart.rb : test for miniunit.
-	* test/cgi/test_cgi_core.rb      : ditto.
-	* test/cgi/test_cgi_header.rb    : ditto.
-
-Wed Sep 24 14:38:29 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/tmpdir.rb: setup buffer with nul characters instead of spaces.
-	  fixed [ruby-dev:36493]
-
-Wed Sep 24 11:18:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_binread): offset argument was wrongly passed to
-	  internal IO#read call.  [ruby-core:18810]
-
-Wed Sep 24 07:38:23 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* vm_core.h: ruby/ruby.h should be included at the very first
-	  place in an entire compilation unit, as it includes
-	  ruby/config.h
-
-Wed Sep 24 06:41:24 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* lib/test/*: removed test/unit.
-	* lib/test/*: added miniunit.
-	* lib/mini/*: ditto.
-
-Wed Sep 24 04:45:35 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/node.h, node.h: move node.h from include path.
-	  This change stop to install node.h because of saving ABI
-	  (node.h will be changed. Extensions should not depends on
-	   this file).
-
-	* blockinlining.c, class.c, compile.c, debug.h, enum.c,
-	  gc.c, iseq.c, parse.y, ruby.c, signal.c, variable.c,
-	  vm.c, vm_core.h, vm_dump.c: ditto.
-
-	* ext/ripper/depend: ditto.
-
-Wed Sep 24 04:09:13 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h: remove unused frame values.
-
-Wed Sep 24 04:07:07 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* signal.c (signal_exec): execute rb_eval_cmd() directly.
-
-Wed Sep 24 03:08:58 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/uri/mailto.rb: fix indentation.
-	* lib/uri/generic.rb: ditto.
-	* lib/yaml.rb: ditto.
-	* lib/uri/cgi/core.rb: fix indentation and ambiguous argument warning.
-
-Tue Sep 23 23:39:25 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv/csv.rb:  Improved the idea of whitespace and word characters used
-	  in substitutions during header conversion as suggested by Michael Selig.
-
-Tue Sep 23 21:50:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_binwrite): allocate wbuf if nosync.
-
-Tue Sep 23 21:45:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_body): use io_binwrite instead of io_fwrite.
-
-Tue Sep 23 21:31:16 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* test/ruby/test_rational2.rb: updated.
-
-	* test/ruby/test_complex2.rb: added.
-
-	* test/ruby/test_complexrational.rb: added.
-
-Tue Sep 23 21:26:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_casecmp): make the ordering consistent with
-	  String#<=>.
-
-Tue Sep 23 20:52:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_binwrite): add nosync argument.
-	  (do_writeconv): extracted from io_fwrite.
-	  (io_fwrite): add nosync argument.  use do_writeconv.
-	  (io_write): add nosync argument.
-	  (io_write_m): new function for IO#write.
-	  (rb_p): don't append record separator.
-
-Tue Sep 23 20:24:41 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* signal.c (signal_exec): fix to use rb_proc_call().
-
-Tue Sep 23 20:06:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/formatters/pretty.rb (REXML::Formatters::Pretty#wrap):
-	  abandon wrapping if the line contains no space.  [ruby-dev:36045]
-
-Tue Sep 23 19:38:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (subtract): check tv_sec. reported by ko1.
-
-Tue Sep 23 19:21:03 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_canonicalize_internal): does no apply
-	  canonicalization rule anymore.
-
-	* rational.c (nurat_s_canonicalize_internal(_no_reduce)?): ditto.
-
-	* complex.c: removed class method new! and new.
-
-	* rational.c: ditto.
-
-Tue Sep 23 19:20:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_binread): a new method to read binary chunk from a
-	  file.  [ruby-core:18674]
-
-	* io.c (open_key_args): wrong permission specified for read-open.
-
-Tue Sep 23 18:24:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* hash.c (rb_obj_is_proc): declaration moved for rdoc.
-
-Tue Sep 23 18:07:55 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk (io.o): remove dependency for vm_core.h.
-
-Tue Sep 23 17:56:44 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_blocking_region): fix typo in a document.
-
-Tue Sep 23 17:50:35 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_blocking_region): write a document.
-
-Tue Sep 23 17:14:31 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c, include/ruby/intern.h (rb_thread_interrupted): added.
-
-	* io.c: use VALUE of thead instead of rb_tread_t to check interrupts.
-
-Tue Sep 23 17:05:14 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* class.c, vm_core.h: move decl of rb_iseq_clone() to class.c.
-
-Tue Sep 23 17:02:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* debug.h (ruby_set_debug_option): declared.
-
-	* main.c: include debug.h.
-
-	* common.mk (main.$(OBJEXT)): dependency updated.
-
-Tue Sep 23 16:59:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (ENVMATCH, ENVNMATCH): reduced same code.
-
-Tue Sep 23 16:55:11 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.h: fix comment and rename macro HAVE_RUBY_MVM_H to
-	  HAVE_RUBY_VM_H.
-
-Tue Sep 23 16:41:31 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/node.h, vm_core.h: move definition of
-	  RUBY_VM_METHOD_NODE to node.h.
-
-	* class.c, common.mk: remove useless inclusion.
-
-	* compile.h, iseq.h, vm_core.h: rename compile.h to iseq.h.
-	  move some definitions from vm_core.h to iseq.h.
-
-	* compile.c, iseq.c, vm.c: ditto.
-
-	* eval.c, compile.c: move some functions for parser
-	  from eval.c to compile.c.
-
-	* eval_intern.h, vm_core.h: move va_init_list() macro to
-	  vm_core.h.
-
-	* iseq.c (rb_iseq_new_top, rb_iseq_first_lineno): added.
-
-	* load.c, ruby.c: use rb_iseq_new_top() instead of
-	  rb_iseq_new() with ISEQ_TYPE_TOP constant directly.
-
-	* proc.c: use rb_iseq_first_lineno() instead of accessing
-	  iseq structure.
-
-Tue Sep 23 16:17:54 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/ripper/eventids2.c (token_to_eventid): supper __ENCODING__
-	  keyword.  [ruby-dev:36478]
-
-Tue Sep 23 15:30:53 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk, hash.c: remove unused inclusion.
-
-Tue Sep 23 09:52:07 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_safe.c, safe.c: rename eval_safe.c to safe.c.
-
-	* common.mk, eval.c, safe.c, inits.c: separate safe.c from eval.c and
-	  make Init_safe().
-
-Tue Sep 23 09:20:00 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: clean up
-	  - remove blockinlining.$(OBJEXT) to built
-	  - make ENCODING_H_INCLDUES variable (include/ruby/encoding.h)
-	  - make VM_CORE_H_INCLUDES variable (vm_core.h)
-	  - simplify rules.
-	  - make depends rule to output depend status using gcc -MM.
-
-	* include/ruby/mvm.h, include/ruby/vm.h: rename mvm.h to vm.h.
-
-	* include/ruby.h: ditto.
-
-	* load.c: add inclusion explicitly.
-
-	* enumerator.c, object.c, parse.y, thread.c, vm_dump.c:
-	  remove useless inclusion.
-
-	* eval_intern.h: cleanup inclusion.
-
-	* vm_core.h: rb_thread_t should be defined in this file.
-
-	* vm_evalbody.c, vm_exec.c: rename vm_evalbody.c to vm_exec.c.
-
-	* vm.h, vm_exec.h: rename vm.h to vm_exec.h.
-
-	* insnhelper.h, vm_insnhelper.h: rename insnhelper.h to vm_insnhelper.h.
-
-	* vm.c, vm_insnhelper.c, vm_insnhelper.h:
-	  - rename vm_eval() to vm_exec_core().
-	  - rename vm_eval_body() to vm_exec().
-	  - cleanup include order.
-
-	* vm_method.c: fix comment.
-
-Tue Sep 23 09:01:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/pathname.rb (each_filename): return Enumerator if no block
-	  given.
-
-	* test/pathname/test_pathname.rb: add a test for above.
-
-Tue Sep 23 08:25:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (env_aset): allow nil value to remove an entry.
-	  [ruby-dev:36465]
-
-	* test/ruby/test_env.rb (TestEnv#test_aset): test updated.
-
-Tue Sep 23 08:07:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-keyword-end-re): emacs21 support.  a
-	  patch from Hiroshi Moriyama <hiroshi at kvd.biglobe.ne.jp> in
-	  [ruby-dev:36471].
-
-	* misc/ruby-mode.el (ruby-in-ppss-context-p): ditto.
-
-	* misc/ruby-mode.el (ruby-here-doc-end-syntax):
-
-Tue Sep 23 02:07:52 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline_history.rb
-	  (Readline::TestHistory#test_each): checked return value.
-
-Tue Sep 23 02:05:34 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/readline.c (Init_readline): used remove_history to
-	  check offset of history if unsupported clear_history.
-
-Mon Sep 22 17:39:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#open): should return a value from the
-	  block (if given).   [ruby-core:18394]
-
-Mon Sep 22 11:17:51 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* include/ruby/encoding.h (enum): ISO C forbids comma at end of
-	  enumerator list
-
-Mon Sep 22 10:15:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* LEGAL: updated file names removed and added.  [ruby-dev:36426]
-
-Mon Sep 22 02:39:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (get_default_external): add description.
-
-Sun Sep 21 21:52:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* math.c (math_log): should check argc.
-
-Sun Sep 21 21:20:24 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: added two macros.
-
-	* rational.c: ditto.
-
-Sun Sep 21 18:06:38 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_convert): checks argc.
-
-	* rational.c (nurat_s_convert): ditto.
-
-Sun Sep 21 10:19:04 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_canonicalize_internal): checks exactness of
-	  imag only.
-
-	* rational.c (nurat_s_convert): accepts non real value
-	  (Rational(a,b) as a/b).
-
-	* complex.c (nucomp_s_convert): refined.
-
-Sun Sep 21 09:37:57 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv/csv.rb:  Reworked CSV's parser and generator to be m17n.  Data
-	  is now parsed in the Encoding it is in without need for translation.
-	* lib/csv/csv.rb:  Improved inspect() messages for better IRb support.
-	* lib/csv/csv.rb:  Fixed header writing bug reported by Dov Murik.
-	* lib/csv/csv.rb:  Use custom separators in parsing header Strings as
-	  suggested by Shmulik Regev.
-	* lib/csv/csv.rb:  Added a :write_headers option for outputting headers.
-	* lib/csv/csv.rb:  Handle open() calls in binary mode whenever we can to
-	  workaround a Windows issue where line-ending translation can cause an
-	  off-by-one error in seeking back to a non-zero starting position after
-	  auto-discovery for :row_sep as suggested by Robert Battle.
-	* lib/csv/csv.rb:  Improved the parser to fail faster when fed some forms
-	  of invalid CSV that can be detected without reading ahead.
-	* lib/csv/csv.rb:  Added a :field_size_limit option to control CSV's
-	  lookahead and prevent the parser from biting off more data than
-	  it can chew.
-	* lib/csv/csv.rb:  Added readers for CSV attributes:  col_sep(), row_sep(),
-	  quote_char(), field_size_limit(), converters(), unconverted_fields?(),
-	  headers(), return_headers?(), write_headers?(), header_converters(),
-	  skip_blanks?(), and force_quotes?().
-	* lib/csv/csv.rb:  Cleaned up code syntax to be more inline with
-	  Ruby 1.9 than 1.8.
-
-Sun Sep 21 07:43:16 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: an instance method image has been removed and
-	  uses "imag" instead of "image".
-
-	* complex.c: two instance method re and im are removed.
-
-	* rational.c: follows the above changes.
-
-	* include/ruby/ruby.h: ditto.
-
-	* gc.c: ditto.
-
-	* lib/cmath.rb: ditto.
-
-	* lib/mathn.rb: ditto.
-
-	* lib/complex.rb: ditto. and provides some obsolete methods.
-
-Sun Sep 21 02:48:45 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/ext/parser/parse.c: use ruby_xfree().
-
-	* ext/json/ext/parser/parse.rl: ditto.
-
-	* ext/json/ext/parser/unicode.c: ditto.
-
-Sun Sep 21 02:40:20 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json: import JSON v 1.1.3.
-
-Sat Sep 20 11:43:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/optparse.rb (summarize): separator "" should output new line.
-
-Sat Sep 20 08:07:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y: strings which contain only US-ASCII don't force to have
-	  US-ASCII encoding. [ruby-dev:36400]
-
-Sat Sep 20 07:59:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_desc): Regexps of ASCII Compatible encoding may
-	  contain non-ASCII characters. So in that case its encoding
-	  must keep original encoding.
-
-Sat Sep 20 07:44:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: prec.c is removed.
-
-Fri Sep 19 22:37:25 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: uses f_(in)?exact_p macro.
-
-	* rational.c: ditto.
-
-	* bignum.c (rb_big_pow): bignum**bignum - should calculate without
-	  rational.
-
-	* lib/complex.rb: should override Math module at most once.
-
-	* lib/mathn.rb: requires 'cmath' directly.
-
-Fri Sep 19 20:48:06 2008  Yuki Sonoda  <yugui@yugui.jp>
-
-	* prec.c: removed. Precision will be redesigned and be back again.
-	  c.f. [ruby-dev:36352].
-
-	* common.mk (COMMON_OBJS): removed prec.o.
-
-	* inits.c (rb_call_inits): removed Init_Precision.
-
-	* numeric.c (Init_Numeric): removed inclusion of Precision.
-	  removed #induced_from from each class.
-
-	* rational.c: ditto.
-
-	* ext/bigdecimal/bigdecimal.c: ditto.
-
-	* lib/rdoc/known_classes.rb: removed the entry for Precision.
-
-	* test/ruby/test_prec.rb: removed.
-
-	* test/ruby/test_integer.rb: removed tests for Precision.
-
-	* test/ruby/test_fixnum.rb: ditto.
-
-	* test/ruby/test_float.rb: ditto.
-
-	* test/ruby/test_rational.rb: ditto.
-
-	* test/ruby/test_complex.rb: ditto.
-
-	* test/bigdecimal/test_bigdecimal.rb: ditto.
-
-Fri Sep 19 19:43:40 2008  Yuki Sonoda  <yugui@yugui.jp>
-
-	* common.mk : Reverts the changeset 18994.
-	  Uses the official repository of rubyspec again.
-
-Fri Sep 19 17:41:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in: applied OS/2 support patch from Brendan Oakley
-	  <gentux2 at gmail.com> in [ruby-core:18707].
-
-Fri Sep 19 09:29:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* dln.c: newer BeOS support.  a patch from Pete Goodeve
-	  <pete.goodeve at computer.org> in [ruby-core:18712].
-
-Fri Sep 19 03:41:25 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: fix memory violation. mentioned by mame [ruby-dev:36373]
-
-Fri Sep 19 01:07:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* regexec.c (string_cmp_ic): add text_end argument.
-	  (slow_search): call enclen with real string end.
-	  (map_search): add text_end argument.
-
-Thu Sep 18 22:54:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/openssl/ossl_pkey_ec.c (ossl_ec_key_to_string): comment out
-	  fragments of unused code.
-
-Thu Sep 18 22:35:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpCtoV): 1E1000...000 is interpreted as
-	  Infinity.  [ruby-dev:36159]
-
-	* ext/bigdecimal/bigdecimal.c (VpPower): Infinity ** 1 returns
-	  Infinity instead of NaN.  [ruby-dev:36159]
-
-	* test/bigdecimal/test_bigdecimal.rb: add tests for above.
-
-Thu Sep 18 22:20:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (Init_Exception): introduce EncodingError which is a
-	  superclass for all encoding related exception classes,
-	  e.g. Encoding::CompatibilityError.  [ruby-dev:36371]
-
-	* transcode.c (Init_transcode): ditto.
-
-Thu Sep 18 21:57:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): make ascii8bit string to be
-	  compatible with any other encoding.
-
-	* string.c (rb_str_cmp): use rb_str_comparable() instead of
-	  rb_enc_compatible() since <=> is a comparison anyway.
-
-Thu Sep 18 21:37:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* grapheme cluster implementation reverted.  [ruby-dev:36375]
-
-Thu Sep 18 20:50:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (Rake::Application#standard_exception_handling):
-	  replaced magic numbers for exit status.
-
-Thu Sep 18 20:37:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::ParseError#set_backtrace): omits
-	  OptionParser internal backtraces unless debug flag is set.
-
-Thu Sep 18 20:02:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/uri/common.rb (unescape): skip '%' to make String#hex work
-	  correctly.
-
-Thu Sep 18 19:51:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (big2str_karatsuba): free internal buffer eagerly.
-	  a patch from TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com>
-	  in [ruby-dev:36217].
-
-	* bignum.c (rb_big2str0): ditto.
-
-Thu Sep 18 19:43:04 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* st.c (new_size): raise RuntimeError when st_table is too big.
-	  [ruby-dev:36354]
-
-Thu Sep 18 18:23:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (enc_arg): must take pointer argument to avoid GC
-	  problem.  StringValueCStr modifies the argument and it should be
-	  preserved while the string StringValueCStr returns is used.
-	  Since the string is used by caller, the modified argument should be
-	  hold by caller.  Actually
-	    GC.stress = true
-	    def (o=Object.new).to_str()
-	      "universal"+"_newline"
-	    end
-	    "\u3042".encode(o, "")
-	  causes curious warning:
-	    rb_define_const: invalid name `' for constant
-
-Thu Sep 18 17:32:44 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c: add "Error" suffix for Encoding exception classes.
-	  a patch from Tadashi Saito <shiba at mail2.accsnet.ne.jp> in
-	  [ruby-dev:36346].
-
-	* encoding.c (Init_Encoding): rename EncodingCompatibilityError to
-	  Encoding::CompatibilityError.  [ruby-dev:36366]
-
-Thu Sep 18 17:18:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c (enc_arg): revert last change.  too early exception
-	  raising.
-
-	* transcode.c (enc_arg): need not to take pointer argument.
-
-Sun Sep 18 02:22:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/bigdecimal/test_bigdecimal.rb: add tests to achieve over 90%
-	  test coverage of bigdecimal.
-
-Wed Sep 17 21:50:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_casecmp): don't use rb_enc_codepoint.
-
-Wed Sep 17 19:55:33 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_convert): accepts complex
-	  value (Complex(a,b) as a+bi).
-
-Wed Sep 17 19:16:47 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_io.rb (TestIO#test_dup): avoid infinite loop.
-	  [ruby-dev:36326]
-
-	* test/ruby/test_io.rb (TestIO#test_dup): remove needless open.
-	  [ruby-dev:35957]
-
-Wed Sep 17 17:44:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_extract_modeenc): process option mode: and perm: as
-	  well.
-
-	* io.c (open_key_args): move mode: and perm: related code to
-	  rb_io_extract_modeenc().
-
-Wed Sep 17 13:42:59 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/html.rb (checkbox_group,radio_group): bug fix
-	  use size instead of	bytesize.
-
-	* test/cgi/test_cgi_tag_helper.rb: test for checkbox_group,radio_group.
-
-Wed Sep 17 06:58:31 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c: provides predicate real? instead of scalar?.
-
-	* complex.c: follows the above change.
-
-	* lib/cmath.rb: ditto.
-
-Wed Sep 17 01:56:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io_m17n.rb: use __FILE__ instead of /dev/null.
-	  [ruby-dev:36327]
-
-Wed Sep 17 01:33:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add precise_ret
-	  argument for mbc_to_code.
-	  (ONIGENC_MBC_TO_CODE): provide NULL for precise_ret.
-	  (ONIGENC_MBC_PRECISE_CODEPOINT): defined.
-
-	* include/ruby/encoding.h (rb_enc_mbc_precise_codepoint): defined.
-
-	* regenc.h (onigenc_single_byte_mbc_to_code): precise_ret argument
-	  added.
-	  (onigenc_mbn_mbc_to_code): ditto.
-
-	* regenc.c (onigenc_single_byte_mbc_to_code): precise_ret argument
-	  added.
-	  (onigenc_mbn_mbc_to_code): ditto.
-
-	* string.c (count_utf8_lead_bytes_with_word): removed.
-	  (str_utf8_nth): removed.
-	  (str_utf8_offset): removed.
-	  (str_strlen): UTF-8 codepoint oriented optimization removed.
-	  (rb_str_substr): ditto.
-	  (enc_succ_char): use rb_enc_mbc_precise_codepoint.
-	  (enc_pred_char): ditto.
-	  (rb_str_succ): ditto.
-
-	* encoding.c (rb_enc_ascget): check length with
-	  rb_enc_mbc_precise_codepoint.
-	  (rb_enc_codepoint): use rb_enc_mbc_precise_codepoint.
-
-	* regexec.c (string_cmp_ic): add text_end argument.
-	  (match_at): check end of character after exact string matches.
-
-	* enc/utf_8.c (grapheme_table): defined for extended grapheme cluster
-	  boundary.
-	  (grapheme_cmp): defined.
-	  (get_grapheme_properties): defined.
-	  (grapheme_boundary_p): defined.
-	  (MAX_BYTES_LENGTH): defined.
-	  (comb_char_enc_len): defined.
-	  (mbc_to_code0): extracted from mbc_to_code.
-	  (mbc_to_code): use mbc_to_code0.
-	  (left_adjust_combchar_head): defined.
-	  (utf_8): use a extended grapheme cluster as a unit.
-
-	* enc/unicode.c (onigenc_unicode_mbc_case_fold): use
-	  ONIGENC_MBC_PRECISE_CODEPOINT to extract codepoints.
-	  (onigenc_unicode_get_case_fold_codes_by_str): ditto.
-
-	* enc/euc_jp.c (mbc_to_code): follow mbc_to_code field change.
-	  use onigenc_mbn_mbc_to_code.
-
-	* enc/shift_jis.c (mbc_to_code): ditto.
-
-	* enc/emacs_mule.c (mbc_to_code): ditto.
-
-	* enc/gbk.c (gbk_mbc_to_code): follow mbc_to_code field and
-	  onigenc_mbn_mbc_to_code change.
-
-	* enc/cp949.c (cp949_mbc_to_code): ditto.
-
-	* enc/big5.c (big5_mbc_to_code): ditto.
-
-	* enc/euc_tw.c (euctw_mbc_to_code): ditto.
-
-	* enc/euc_kr.c (euckr_mbc_to_code): ditto.
-
-	* enc/gb18030.c (gb18030_mbc_to_code): ditto.
-
-	* enc/utf_32be.c (utf32be_mbc_to_code): follow mbc_to_code field
-	  change.
-
-	* enc/utf_16be.c (utf16be_mbc_to_code): ditto.
-
-	* enc/utf_32le.c (utf32le_mbc_to_code): ditto.
-
-	* enc/utf_16le.c (utf16le_mbc_to_code): ditto.
-
-Wed Sep 17 01:17:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (enc_arg): raise exception when unknown encoding is
-	  given.
-
-Tue Sep 16 22:23:24 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI#header): performance improvement.
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-	* test/cgi/test_cgi_header.rb: exception class fixed.
-
-Tue Sep 16 22:21:33 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_concat): fix rdoc. (codepoint is integer)
-
-	* string.c (rb_str_each_codepoint): use UINT2NUM.
-
-Tue Sep 16 21:48:55 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_desc): Regexp#inspect should be US-ASCII.
-
-Tue Sep 16 21:33:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_crypt): orthodox crypt() sees only first two bytes
-	  of salt.
-
-Tue Sep 16 19:18:40 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_marshal_{dump,load}): preserve instance
-	  variables.
-
-	* rational.c (nurat_marshal_{dump,load}): ditto.
-
-Tue Sep 16 18:28:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_gets_m): rdoc updated.  limit counts in bytes.
-	  [ruby-core:18617]
-
-	* io.c (rb_io_readlines, rb_f_gets): ditto.
-
-	* io.c (rb_io_readbyte): rdoc updated.  [ruby-core:18617]
-
-Tue Sep 16 11:55:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_codepoint): add new methods, #codepoints
-	  and #each_codepoint.  a patch from Michael Selig
-	  <michael.selig at fs.com.au> in [ruby-core:18532].
-
-Tue Sep 16 11:24:44 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/mkconstants.rb: add new constants.  a patch from
-	  IWAMURO Motonori <deenheart+ruby at gmail.com> in [ruby-dev:36309].
-
-Tue Sep 16 09:20:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_io.rb (TestIO#test_dup): exception should be
-	  raised from IO#dup.
-
-Tue Sep 16 08:35:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_io.rb (TestIO#test_dup): this test might fail if
-	  there are any garbage IO objects.
-
-Tue Sep 16 02:02:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_buf_cat_ascii): codepoint is unsigned int.
-
-	* string.c (rb_str_concat): ditto.
-
-	* string.c (str_cat_char): ditto.
-
-	* string.c (prefix_escape): ditto.
-
-Tue Sep 16 01:47:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (single_byte_optimizable): make function inline.  based
-	  on a patch from Michael Selig <michael.selig at fs.com.au> in
-	  [ruby-core:18532].
-
-	* string.c (str_modify_keep_cr): new function act as
-	  rb_str_modify(), but don't clear coderange
-
-	* string.c (rb_str_casecmp): specialized for single byte strings.
-
-	* string.c (rb_str_splice): preserve coderange.
-
-	* string.c (rb_str_slice_bang, rb_str_reverse_bang,
-	  rb_str_upcase_bang, rb_str_downcase_bang, tr_trans,
-	  rb_str_capitalize_bang, rb_str_swapcase_bang,
-	  rb_str_delete_bang, rb_str_chop_bang, rb_str_chomp_bang,
-	  rb_str_lstrip_bang, rb_str_rstrip_bang): ditto.
-
-	* string.c (rb_str_clear): preset coderange.
-
-	* string.c (rb_str_split_m): specialized for splitting with a
-	  string.
-
-Tue Sep 16 00:57:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_quote): use rb_enc_mbcput to generate ASCII
-	  incompatible characters properly.
-
-Tue Sep 16 00:51:59 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (Encoding#base_encoding): removed. [ruby-dev:36270]
-
-Tue Sep 16 00:40:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (STR1_LENGTH): defined.
-	  (makeSTR1LEN): defined.
-
-	* tool/transcode-tblgen.rb: use makeSTR1LEN.  generate STR1 for 4 to
-	  259 bytes.
-
-	* transcode.c (rb_transcoding): new field: output_index.
-	  (transcode_restartable0): use STR1_LENGTH.
-
-Mon Sep 15 23:52:45 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c, include/ruby/ruby.h: rename rb_register_mark_object()
-	  to rb_gc_register_mark_object().
-
-	* eval.c, vm.c: initialize vm->mark_object_ary at
-	  Init_top_self().
-
-	* bignum.c, complex.c, encoding.c, ext/win32ole/win32ole.c,
-	  io.c, load.c, marshal.c, rational.c, ruby.c, vm.c:
-	  use rb_gc_register_mark_object() instead of
-	  rb_global_variable() or rb_gc_register_address().
-
-Mon Sep 15 23:37:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_opts): don't use to_sym.
-
-Mon Sep 15 23:28:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_get_index): don't return -1.
-
-	* io.c (rb_scan_open_args): call FilePathValue before encoding
-	  conversion.
-
-Mon Sep 15 22:11:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_squeeze_bang): specialized for 7bit characters in
-	  ASCII compatible strings.
-
-	* string.c (rb_str_count): ditto.
-
-	* string.c (tr_trans): preserve 7bit/valid coderange flag.
-
-	* string.c (rb_str_squeeze_bang): preserve previous coderange value.
-
-	* string.c (rb_str_lstrip_bang): ditto.
-
-	* string.c (rb_str_rstrip_bang): ditto.
-
-	* encoding.c (rb_default_external_encoding): preserve
-	  default_external_encoding in a static variable.
-
-	* string.c (single_byte_optimizable): check coderange first, to
-	  reduce number of calling rb_enc_from_index().
-
-Mon Sep 15 20:57:00 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/matrix.rb (Matrix#eql?): fixed [ruby-dev:36298].
-	  Reported by an anonymous user.
-
-	* lib/matrix.rb (Vector#eql?): ditto.
-
-	* (Matrix#compare_by_row_vectors): takes comparison
-	  strategy as an optional parameter.
-
-	* (Vector#compare_by): ditto.
-
-Mon Sep 15 14:34:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (RUBY_MAX_CHAR_LEN): defined.
-
-	* encoding.c (str_cat_char): use RUBY_MAX_CHAR_LEN.
-
-Mon Sep 15 13:53:33 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): accept other than strings and
-	  regexps. [ruby-core:18595]
-
-	* encoding.c (rb_enc_get_index): works files and encodings.
-
-Mon Sep 15 13:17:21 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_eql_p): new.
-
-	* complex.c (nucomp_hash): should use hash values of the elements.
-
-	* rational.c (nurat_hash): ditto.
-
-	* hash.c (rb_any_cmp): removed an unused variable.
-
-Mon Sep 15 11:11:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): resetsize_func and resetstate_func
-	  also returns ssize_t.
-
-	* enc/trans/iso2022.trans: follow the type change.
-
-Mon Sep 15 10:28:10 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* test/matrix/test_matrix.rb (setup): typo.
-	  (test_equality): misdefinition of the expected working.
-	  Reported by an anonymous user.
-	  (test_hash): added.
-
-	* test/matrix/test_vector.rb: ditto.
-
-Mon Sep 15 03:33:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h: return output functions ssize_t.
-
-	* transcode.c (transcode_restartable0): don't need to cast the result
-	  of output functions.
-
-	* enc/trans/newline.trans: follow the type change.
-
-	* enc/trans/escape.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-Mon Sep 15 03:04:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h: output function takes output buffer size.
-
-	* transcode.c: give output buffer size for output functions.
-
-	* enc/trans/newline.trans: follow the type change.
-
-	* enc/trans/escape.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-Mon Sep 15 02:37:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (str_encode): returns duplicated string if nothing
-	  changed.  [ruby-core:18578]
-
-Sun Sep 14 22:09:01 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/core.rb (CGI::parse): performance improvement
-
-Sun Sep 14 18:33:32 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: trivial changes.
-
-Sun Sep 14 16:15:22 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/matrix.rb (Vector#eql?): typo of the method name as "eqn?".
-	  (Vector#eqn?): removed. Defined by mistake.
-	  Fixes [ruby-dev:36294]. Reported by weda <weda AT
-	  issp.u-tokyo.ac.jp> and an anonymous user.
-
-	* test/matrix/test_matrix.rb: added.
-
-	* test/matrix/test_vector.rb: added.
-
-Sun Sep 14 16:07:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): associates the locale encoding with $0 as
-	  well as ARGV.
-
-Sun Sep 14 13:48:03 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* object.c (Init_Object): added metameta-class initialization for
-	  BasicObject, Object, and Module.
-	  The metameta-classes of them are now the metaclass of Class, as the
-	  metameta-class of Class is.
-
-	* object.c (boot_defmetametaclass): added.
-
-Sun Sep 14 10:10:43 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (f_{add,mul,sub}): omitted some shortcuts for preserving
-	  signed zero anyway.
-
-	* complex.c (nucomp_negate): new.
-
-Sun Sep 14 04:15:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add end argument for
-	  left_adjust_char_head.
-	  (ONIGENC_LEFT_ADJUST_CHAR_HEAD): add end argument.
-	  (onigenc_get_left_adjust_char_head): ditto.
-
-	* include/ruby/encoding.h (rb_enc_left_char_head): add end argument.
-
-	* regenc.h (onigenc_single_byte_left_adjust_char_head): ditto.
-
-	* regenc.c (onigenc_get_right_adjust_char_head): follow the interface
-	  change.
-	  (onigenc_get_right_adjust_char_head_with_prev): ditto.
-	  (onigenc_get_prev_char_head): ditto.
-	  (onigenc_step_back): ditto.
-	  (onigenc_get_left_adjust_char_head): ditto.
-	  (onigenc_single_byte_code_to_mbc): ditto.
-
-	* re.c: ditto.
-
-	* string.c: ditto.
-
-	* io.c: ditto.
-
-	* regexec.c: ditto.
-
-	* enc/euc_jp.c: ditto.
-
-	* enc/cp949.c: ditto.
-
-	* enc/shift_jis.c: ditto.
-
-	* enc/gbk.c: ditto.
-
-	* enc/big5.c: ditto.
-
-	* enc/euc_tw.c: ditto.
-
-	* enc/euc_kr.c: ditto.
-
-	* enc/emacs_mule.c: ditto.
-
-	* enc/gb18030.c: ditto.
-
-	* enc/utf_8.c: ditto.
-
-	* enc/utf_16le.c: ditto.
-
-	* enc/utf_16be.c: ditto.
-
-	* enc/utf_32le.c: ditto.
-
-	* enc/utf_32be.c: ditto.
-
-Sun Sep 14 03:43:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (ONIGENC_STEP_BACK): add end argument.
-	  (onigenc_step_back): ditto.
-
-	* regenc.c (onigenc_step_back): add end argument.
-
-	* regexec.c: follow the interface change.
-
-Sun Sep 14 03:20:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (onigenc_get_prev_char_head): add end
-	  argument.
-
-	* include/ruby/encoding.h (rb_enc_prev_char): ditto.
-
-	* regenc.c (onigenc_get_prev_char_head): add end argument.
-
-	* regparse.c: follow the interface change.
-
-	* regexec.c: ditto.
-
-	* string.c: ditto.
-
-	* parse.y: ditto.
-
-Sun Sep 14 02:04:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h
-	  (onigenc_get_right_adjust_char_head_with_prev): add end argument.
-
-	* regenc.c (onigenc_get_right_adjust_char_head_with_prev): use end
-	  argument.
-
-	* regexec.c (forward_search_range): follow the interface change.
-
-Sun Sep 14 01:38:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (onigenc_get_right_adjust_char_head): add
-	  end argument.
-
-	* include/ruby/encoding.h (rb_enc_right_char_head): add end argument.
-
-	* regenc.c (onigenc_get_right_adjust_char_head): use end argument.
-
-	* re.c (rb_reg_adjust_startpos): follow the interface change.
-
-	* string.c (rb_str_index): ditto.
-
-	* regexec.c (backward_search_range): ditto.
-	  (onig_search): ditto.
-
-Sun Sep 14 00:43:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/ripper/depend (ripper.o): it depends on ruby headers.
-
-Sat Sep 13 19:27:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_encoding_set): don't need argc argument.
-	  (rb_io_s_pipe): update io_encoding_set call.
-	  (rb_io_set_encoding): ditto.
-
-Sat Sep 13 18:46:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_transcoding): align state field.
-
-Sat Sep 13 18:21:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (DECORATOR_P): renamed from SUPPLEMENTAL_CONVERSION.
-
-Sat Sep 13 18:05:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): use rb_enc_name.
-	  (make_readconv): ditto.
-
-	* transcode.c (rb_econv_open_opts): ditto.
-	  (econv_args): ditto.
-	  (decorate_convpath): ditto.
-	  (econv_set_replacement): ditto.
-
-Sat Sep 13 11:15:38 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/rexml/document.rb: fixed typo.
-
-Sat Sep 13 10:53:13 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: refined.
-
-	* rational.c: ditto.
-
-Sat Sep 13 03:44:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_prepare_opts): raise ArgumentError if
-	  a broken string is specified as a replacement.
-
-Sat Sep 13 03:31:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* iseq.c (iseq_s_compile_file): use rb_file_open_str.
-
-	* io.c (rb_file_open_generic): call validate_enc_binmode.
-	  (rb_file_open_str): call FilePathValue.
-
-Sat Sep 13 02:58:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (validate_enc_binmode): extracted from rb_io_extract_modeenc.
-	  (rb_io_extract_modeenc): use validate_enc_binmode.
-	  (io_encoding_set): call validate_enc_binmode.
-
-Sat Sep 13 02:50:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_prepare_opts): initialize *opt and return 0
-	  if opthash is nil.
-
-Sat Sep 13 02:29:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans: transcoder name renamed to use underscore.
-
-	* transcode.c: follow the renaming.
-
-Sat Sep 13 02:12:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_init_by_convpath_i): new function.
-	  (rb_econv_init_by_convpath): new function.
-	  (econv_init): use rb_econv_init_by_convpath.
-
-Sat Sep 13 01:11:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_args): take snamev_p and dnamev_p to prevent
-	  possible GC problem.
-
-Sat Sep 13 00:38:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (enc_arg): take arg as VALUE * to prevent possible GC
-	  problem.
-
-Fri Sep 12 23:19:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_add_transcoder_at): fix loop condition.
-
-Fri Sep 12 22:39:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (decorator_names): extracted from rb_econv_open.
-	  (rb_econv_open): use decorator_names.
-	  (econv_args): extracted from econv_init.
-	  (econv_init): use econv_args.
-	  (decorate_convpath): new function.
-	  (search_convpath_i): new function.
-	  (econv_s_search_convpath): new method.
-	  (Init_transcode): new method defined.
-
-Fri Sep 12 21:55:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_t): new field: num_allocated.
-	  (rb_econv_alloc): extracted from
-	  rb_econv_open_by_transcoder_entries.
-	  (rb_econv_add_transcoder_at): extracted from rb_econv_decorate_at
-	  and generalized
-	  (rb_econv_open_by_transcoder_entries): use rb_econv_alloc and
-	  rb_econv_add_transcoder_at.
-	  (rb_econv_add_converter): extracted from rb_econv_decorate_at.
-	  (rb_econv_decorate_at): use rb_econv_add_converter.
-
-Fri Sep 12 21:22:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_t): new field: started.
-	  (rb_econv_open_by_transcoder_entries): initialize started field.
-	  (rb_econv_convert): set started field.
-	  (rb_econv_insert_output): ditto.
-	  (rb_econv_decorate_at): check started field instead of num_finished.
-
-Fri Sep 12 20:28:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* regenc.c (onigenc_single_byte_code_to_mbc): follow OnigEncoding
-	  change.
-
-Fri Sep 12 20:00:22 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regparse.c (parse_exp): fix resource leak.
-
-Fri Sep 12 01:21:22 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/node.c (syck_replace_str2): fix wrong check to free ptr.
-
-Thu Sep 11 20:18:24 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_err_in_callback.rb (teardown): get rid
-	  of infinite loop.
-
-Thu Sep 11 19:12:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (OnigCodePoint): unsigned long to unsigned int.
-
-	* include/ruby/encoding.h (rb_enc_codepoint): ditto.
-
-	* encoding.c (rb_enc_codepoint): signed int to unsigned int.
-
-	* encoding.c (rb_enc_ascget): ditto.
-
-	* string.c (rb_str_casecmp): ditto.
-
-	* string.c (enc_succ_alnum_char): ditto.
-
-	* string.c (rb_str_inspect): ditto.
-
-	* string.c (rb_str_upcase_bang): ditto.
-
-	* string.c (rb_str_downcase_bang): ditto.
-
-	* string.c (rb_str_capitalize_bang): ditto.
-
-	* string.c (rb_str_swapcase_bang): ditto.
-
-	* string.c (struct tr): ditto.
-
-	* string.c (trnext): ditto.
-
-	* string.c (tr_trans): ditto.
-
-	* string.c (tr_setup_table): ditto.
-
-	* string.c (tr_find): ditto.
-
-	* string.c (rb_str_delete_bang): ditto.
-
-	* string.c (rb_str_squeeze_bang): ditto.
-
-	* string.c (rb_str_count): ditto.
-
-	* string.c (rb_str_split_m): ditto.
-
-	* string.c (rb_str_each_line): ditto.
-
-	* string.c (rb_str_lstrip_bang): ditto.
-
-	* string.c (rb_str_rstrip_bang): ditto.
-
-	* string.c (rb_str_intern): ditto.
-
-	* dir.c (char_casecmp): ditto.
-
-	* sprintf.c (rb_str_format): ditto.
-
-	* enc/emacs_mule.c (mbc_to_code): to be 32bit clean.
-
-	* enc/emacs_mule.c (code_to_mbc): ditto.
-
-	* enc/gb18030.c (mbc_to_code): ditto.
-
-	* enc/gb18030.c (code_to_mbc): ditto.
-
-Thu Sep 11 19:09:25 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/iconv/iconv.c: add attention for machine independent.
-
-Thu Sep 11 15:23:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivrem): adjust length for division and remainder.
-	  a patch from TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com> in
-	  [ruby-dev:36231].
-
-Thu Sep 11 02:59:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_binwrite): extracted from io_fwrite.
-
-Thu Sep 11 02:25:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_encoding): new function.
-	  (make_encobj): new function.
-	  (econv_s_asciicompat_encoding): use make_encoding.
-	  (rb_econv_open_exc): use SUPPLEMENTAL_CONVERSION.
-	  (econv_convpath): use encoding object in the result.
-
-Thu Sep 11 02:14:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_convpath): new method.
-
-Wed Sep 10 23:00:43 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* tool/compile_prelude.rb: print "<internal:prelude>" instead of
-	  "prelude.rb" on stack trace.  [ruby-dev:36129]
-
-Wed Sep 10 21:19:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (big2str_karatsuba): remove unnecessary fixnum code.  a
-	  patch from TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com> in
-	  [ruby-dev:36217].
-
-Wed Sep 10 21:09:32 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_err_in_callback.rb: InternetExplorer should
-	  be closed.
-
-	* test/win32ole/err_in_callback.rb: ditto.
-
-Wed Sep 10 18:25:19 2008  akira yamada  <akira@rice.p.arika.org>
-
-	* lib/uri/common.rb (URI::Parser): new class.
-
-	* lib/uri/mailto.rb, lib/uri/generic.rb: follow the above change.
-
-	* test/uri/test_parser.rb: added tests for URI::Parser.
-
-Wed Sep 10 10:35:32 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi/cookie.rb (CGI::Cookie#to_s): performance improvement
-	  from http://jp.rubyist.net/magazine/?0023-Cgirb.
-
-Wed Sep 10 10:12:29 2008  akira yamada  <akira@arika.org>
-
-	* lib/sync.rb (Sync_m#sync_exclusive): fixed
-	  typo. [ruby-dev:36233] [RubyForge#11680]
-
-Wed Sep 10 01:57:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (StrSet#hash): cache hash value.
-	  (ActionMap#hash): ditto.
-
-Wed Sep 10 01:26:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (econv_after_output): renamed from
-	  econv_output_followed_by_input.
-	  (ECONV_AFTER_OUTPUT): renamed from ECONV_OUTPUT_FOLLOWED_BY_INPUT.
-
-	* transcode.c: follow the renaming.
-
-	* io.c: ditto.
-
-Wed Sep 10 01:16:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (get_replacement_character): don't return ASCII
-	  incompatible replacements.
-	  (make_replacement): don't convert the result of
-	  get_replacement_character.
-
-Wed Sep 10 01:05:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans (rb_universal_newline): swap src_encoding
-	  and dst_encoding.
-
-	* transcode.c (rb_econv_decorate_at): call get_transcoder_entry only
-	  once.
-	  (rb_econv_binmode): follow universal_newline change.
-
-Wed Sep 10 00:01:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): rename field: writeconv_stateless to
-	  writeconv_asciicompat.
-
-	* io.c: follow the renaming.
-
-	* gc.c: ditto.
-
-Tue Sep  9 23:55:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fwrite): raise an error if ASCII incompatible string
-	  written for text mode IO without encoding conversion.
-	  (rb_io_extract_modeenc): binmode requirement changed.
-
-Tue Sep  9 21:59:48 2008  Takeyuki Fujioka  <xibbar@ruby-lang.org>
-
-	* lib/cgi*: split cgi.rb into four files. [ruby-dev:36041]
-
-Tue Sep  9 21:17:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_DECORATOR_MASK): merge
-	  ECONV_ENCODER_MASK and ECONV_DECORATOR_MASK.
-	  (ECONV_UNIVERSAL_NEWLINE_DECORATOR): renamed from
-	  ECONV_UNIVERSAL_NEWLINE_DECODER.
-	  (ECONV_CRLF_NEWLINE_DECORATOR): renamed from
-	  ECONV_CRLF_NEWLINE_ENCODER.
-	  (ECONV_CR_NEWLINE_DECORATOR): renamed from ECONV_CR_NEWLINE_ENCODER.
-	  (ECONV_XML_TEXT_DECORATOR): renamed from ECONV_XML_TEXT_ENCODER.
-	  (ECONV_XML_ATTR_CONTENT_DECORATOR): renamed from
-	  ECONV_XML_ATTR_CONTENT_ENCODER.
-	  (ECONV_STATEFUL_DECORATOR_MASK): renamed from
-	  ECONV_STATEFUL_ENCODER_MASK.
-	  (ECONV_XML_ATTR_QUOTE_DECORATOR): renamed from
-	  ECONV_XML_ATTR_CONTENT_DECORATOR.
-
-	* io.c: follow the renaming.
-
-	* transcode.c: ditto.
-
-Tue Sep  9 20:55:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open0): make it static.
-	  (rb_econv_open): place decorators at last.
-
-Tue Sep  9 20:40:15 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/openssl/test_ssl.rb (OpenSSL#test_client_session):
-	  Debian's openssl 0.9.8g-13 failed at assert(ssl.session_reused?),
-	  when use default SSLContext. [ruby-dev:36167]
-
-Tue Sep  9 20:34:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_t): last_trans_index removed.
-	  (rb_econv_open_by_transcoder_entries): follow the type change.
-	  (rb_econv_open0): ditto.
-	  (rb_econv_decorate_at): ditto.
-	  (rb_econv_binmode): ditto.
-	  (rb_econv_insert_output): simplified because there are no decorators
-	  at last.
-
-Tue Sep  9 20:21:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): reverse the order of decoders.
-
-Tue Sep  9 20:18:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open0): num_encoders and num_decoders removed.
-
-Tue Sep  9 03:59:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): useless branch removed.
-
-Tue Sep  9 02:18:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_decorate_at_first): declared.
-	  (rb_econv_decorate_at_last): declared.
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize
-	  replacement_enc.  allocate outbuf for the last transcoder.
-	  (rb_econv_open0): extracted from rb_econv_open.
-	  (rb_econv_open): use rb_econv_open0 and decorate the result using
-	  rb_econv_decorate_at_first and rb_econv_decorate_at_last.
-	  (rb_econv_decorate_at): new function.
-	  (rb_econv_decorate_at_first): ditto.
-	  (rb_econv_decorate_at_last): ditto.
-	  (rb_econv_binmode): fix iteration end condition.
-	  (econv_init): don't set source_encoding_name and
-	  destination_encoding_name because they are set in rb_econv_open0.
-
-Tue Sep  9 01:10:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): make ec a local variable.
-
-Tue Sep  9 00:20:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_asciicompat_encoding): check decoder.
-
-Tue Sep  9 00:00:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_t): last_error.partial_input removed.
-
-Mon Sep  8 23:24:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_asciicompat_encoding): renamed
-	  from rb_econv_stateless_encoding to apply stateless ASCII
-	  incompatible encodings such as UTF-16BE.
-
-	* io.c (make_writeconv): use rb_econv_asciicompat_encoding.
-
-	* transcode_data.h (rb_transcoder_asciicompat_type_t): renamed from
-	  rb_transcoder_stateful_type_t.
-	  (rb_transcoder): use rb_transcoder_asciicompat_type_t.
-
-	* transcode.c: follow the type change.
-	  (asciicompat_encoding_i): renamed from stateless_encoding_i.
-	  (rb_econv_asciicompat_encoding): renamed from
-	  rb_econv_stateless_encoding.
-	  (econv_s_asciicompat_encoding): method renamed.
-
-	* tool/transcode-tblgen.rb: follow the type change.
-
-	* enc/trans/utf_16_32.trans: follow the type change.
-	  rb_from_UTF_16BE to UTF-8 is asciicompat_decoder.
-	  rb_from_UTF_16LE to UTF-8 is asciicompat_decoder.
-	  rb_from_UTF_32BE to UTF-8 is asciicompat_decoder.
-	  rb_from_UTF_32LE to UTF-8 is asciicompat_decoder.
-	  UTF-8 to rb_to_UTF_16BE is asciicompat_encoder.
-	  UTF-8 to rb_to_UTF_16LE is asciicompat_encoder.
-	  UTF-8 to rb_to_UTF_32BE is asciicompat_encoder.
-	  UTF-8 to rb_to_UTF_32LE is asciicompat_encoder.
-
-	* enc/trans/newline.trans: follow the type change.  universal newline
-	  decoder is asciicompat_converter.
-
-	* enc/trans/escape.trans: follow the type change.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-Mon Sep  8 23:05:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_insert_output): "readagain" part should be
-	  after replacement.
-
-Mon Sep  8 22:30:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (dir_initialize): rename option name of Dir.open
-	  from :external_encoding to :encoding.
-
-Mon Sep  8 22:16:20 2008  Takeyuki FUJIOKA  <xibbar@ruby-lang.org>
-
-	* lib/cgi.rb : obsolete regex "n" option. [ruby-dev:36130]
-
-Mon Sep  8 18:13:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (getppid): typo. [ruby-dev:36202]
-
-	* process.c (get_ppid): mention the return value on Windows.
-
-Mon Sep  8 18:15:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ArrayCode): less string substitutions.
-
-Mon Sep  8 18:13:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* vm.c (rb_mRubyVMFrozenCore): registered for GC.
-
-	* re.c (rb_reg_preprocess_dregexp): fix GC problem on MacOS X with
-	  powerpc-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc.
-	  build 5367).
-
-Mon Sep  8 18:09:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): define SIZE_MAX for VC++6/7.
-
-Mon Sep  8 17:46:09 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (filetime_to_unixtime): remove unused variable.
-	  [ruby-dev:36191]
-
-Mon Sep  8 13:47:39 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_io.rb (TestIO#test_dup): add open in block.
-	  see [ruby-dev:35957].
-
-Mon Sep  8 07:09:42 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: some adjustments.
-
-	* rational.c: ditto.
-
-Mon Sep  8 06:50:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (XLDFLAGS): added --enable-auto-import for cygwin and
-	  mingw.
-
-Mon Sep  8 02:04:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_set_replacement): renamed from
-	  rb_econv_set_replacemenet.
-
-	* transcode.c: follow the renaming.
-
-Mon Sep  8 01:10:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (transcode_tblgen): log message refined.
-
-Mon Sep  8 00:58:04 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: removed unused code.
-
-Mon Sep  8 00:04:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/iso2022.trans: upcase to iso-2022-jp.
-
-	* enc/emacs_mule.c: ditto.
-
-Sun Sep  7 23:46:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/iso2022.trans: stateless-iso-2022-jp is defined to avoid
-	  undefined conversion error between iso-2022-jp and the corresponding
-	  stateless encoding.
-
-	* enc/emacs_mule.c: replicate emacs-mule as stateless-iso-2022-jp.
-
-Sun Sep  7 20:03:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans (hexstr): renamed from str1.
-
-Sun Sep  7 19:45:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans: use transcode_tblgen.
-
-	* tool/transcode-tblgen.rb: generate an empty line after str1.
-
-Sun Sep  7 19:16:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ActionMap#str_name): new method to
-	  generate a name base on string content.
-	  (ActionMap#gen_str): extracted from generate_info and use str_name.
-
-Sun Sep  7 18:28:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ActionMap#generate_info): use a memo to
-	  avoid duplication for STR1.
-
-Sun Sep  7 18:10:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (STR1): defined for a string up to 255 bytes.
-	  (STR1_BYTEINDEX): defined.
-	  (makeSTR1): defined.
-
-	* tool/transcode-tblgen.rb: generate STR1.
-
-	* transcode.c (transcode_restartable0): interpret STR1.
-
-	* enc/trans/escape.trans (fun_so_escape_xml_chref): removed.  STR1 is
-	  used instead.
-
-Sun Sep  7 17:54:45 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* configure.in: Mac OS X's crypt(2) is broken with invalid salt.
-	  [ruby-dev:35899]
-	* string.c (rb_str_crypt): ditto.
-
-Sun Sep  7 17:29:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: o4 is usable only if the first byte is
-	  f0-f7.
-
-Sun Sep  7 12:44:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): choose ASCII compatible encoding as
-	  intermediate encoding if stateful encoder exists.
-
-Sun Sep  7 12:09:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_XML_ATTR_CONTENT_ENCODER): defined.
-	  (ECONV_STATEFUL_ENCODER_MASK): defined.
-	  (ECONV_XML_ATTR_QUOTE_ENCODER): defined.
-	  (ECONV_XML_ATTR_ENCODER): removed.
-
-	* enc/trans/escape.trans (rb_escape_xml_attr_content): defined.
-	  (rb_escape_xml_attr_quote): defined.
-	  (rb_escape_xml_attr): removed.
-
-	* io.c (NEED_WRITECONV): writeconv is required if supplemental
-	  converter is used.
-	  (make_writeconv): apply stateful encoder in writeconv.
-
-	* transcode.c: follow the constant change.
-
-Sun Sep  7 07:24:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/*.el:  merged the following patches from Nathan Weizenbaum
-	  <nex342 at gmail.com>.   [ruby-core:18424]
-
-	* misc/ruby-mode.el: improve here-doc performance.
-
-	* misc/ruby-mode.el: don't crash the whole mode if the Subversion
-	  $ keyword isn't interpolated.
-
-	* misc/ruby-mode.el: don't highlight keywords when they're the
-	  beginning of non-keyword symbols.
-
-	* misc/ruby-mode.el, misc/ruby-electric.el: use regexp-opt where
-	  possible for more efficient regexps.
-
-	* misc/*.el: untabify, for internal consistency and consistency
-	  with standard Emacs elisp files.
-
-	* misc/ruby-mode.el: fix a variable-name error.
-
-	* misc/emacs-mode.el: don't set case-fold-search globally to nil;
-	  instead just set it when we need it.
-
-Sun Sep  7 06:31:51 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (file_expand_path): applied a patch from Nobuhiro Tachino
-	  in [ruby-dev:35948].  fix #491
-
-Sun Sep  7 03:37:05 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (f_block_optarg): allow default for block parameters as
-	  long as the value is primary.  a patch from Eric Mahurin
-	  <eric.mahurin at gmail.com> in [ruby-core:16880].
-
-Sun Sep  7 01:07:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (yylex): "1.upto 2 {|i| p i }" should be syntax error.
-	  [ruby-dev:36008]
-
-	* test/ruby/test_parse.rb (TestParse): update a test not to use
-	  recently fixed inconsistent syntax.
-
-Sun Sep  7 00:37:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_ERROR_HANDLER_MASK): defined.
-	  (ECONV_DECODER_MASK): defined.
-	  (ECONV_ENCODER_MASK): defined.
-
-	* io.c (make_writeconv): restrict ecflags for writeconv with
-	  ECONV_ERROR_HANDLER_MASK.
-
-Sat Sep  6 23:03:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_XML_TEXT_ENCODER): renamed from
-	  ECONV_HTML_TEXT_ENCODER.
-	  (ECONV_XML_ATTR_ENCODER): renamed from ECONV_HTML_ATTR_ENCODER.
-
-	* enc/trans/escape.trans: follow the renaming.
-
-	* transcode.c: ditto.
-
-Sat Sep  6 21:35:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/mkconstants.rb: add some IPV6 constants. [ruby-dev:36175]
-
-Sat Sep  6 20:10:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_description): show ECONV_HTML_TEXT_ENCODER and
-	  ECONV_HTML_ATTR_ENCODER.
-
-Sat Sep  6 20:06:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_binmode): check actual transcoders.
-
-Sat Sep  6 19:54:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): fix last_tc.
-
-Sat Sep  6 19:36:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_binmode): clear newline flags in writeconv_pre_ecflags.
-
-Sat Sep  6 18:47:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode0): check ECONV_HTML_TEXT_ENCODER and
-	  ECONV_HTML_ATTR_ENCODER.
-
-Sat Sep  6 18:38:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (allocate_converted_string): fix overflow condition.
-
-Sat Sep  6 15:06:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (sym_html): new variable.
-	  (sym_text): ditto.
-	  (sym_attr): ditto.
-	  (econv_opts): check :html=>:text and :html=>:attr.
-	  (Init_transcode): initialize the above variables.
-
-Sat Sep  6 14:46:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_HTML_TEXT_ENCODER): new constant.
-	  (ECONV_HTML_ATTR_ENCODER): ditto.
-
-	* transcode.c (rb_econv_open): check ECONV_HTML_TEXT_ENCODER and
-	  ECONV_HTML_ATTR_ENCODER.
-	  (Init_transcode): Encoding::Converter::HTML_TEXT_ENCODER and
-	  Encoding::Converter::HTML_ATTR_ENCODER defined.
-
-Sat Sep  6 14:15:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (struct trans_open_t): defined to pass num_additional.
-	  (trans_open_i): use struct trans_open_t.
-	  (rb_econv_open): ditto.
-
-Sat Sep  6 13:43:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans (fun_so_escape_html_attr): fix return type.
-
-Sat Sep  6 12:43:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): needless branch removed.
-
-Sat Sep  6 12:38:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): test condition simplified.
-
-Sat Sep  6 12:25:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (stateless_encoding_i): ignore supplemental conversions.
-	  Encoding::Converter.stateless_encoding("html-attr-escaped") should be
-	  nil.
-
-Sat Sep  6 12:19:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans (escape_html_attr_init): new function.
-	  (fun_so_escape_html_attr): new function.
-	  (escape_html_attr_finish): new function.
-	  (rb_escape_html_attr): use them to quote the converted result.
-
-Sat Sep  6 07:54:36 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: uses f_real_p macro.
-
-Sat Sep  6 07:27:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): fail for ASCII incompatible with
-	  newline conversion.
-
-Sat Sep  6 07:24:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_extract_modeenc): raise an error for ASCII incompatible
-	  encoding without binmode.
-
-Sat Sep  6 07:12:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivrem1): optimization by skipping zeros at the
-	  tail of digits.  a patch from TOYOFUKU Chikanobu
-	  <nobu_toyofuku at nifty.com> in [ruby-dev:36169].
-
-Sat Sep  6 06:28:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/escape.trans: new file.
-
-Sat Sep  6 06:23:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (StrSet.parse): accept upper case
-	  hexadecimal digits.
-
-Sat Sep  6 05:37:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (output_hex_charref): upcase hexadecimal digits.
-
-Sat Sep  6 05:22:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_UNDEF_HEX_CHARREF): defined.
-
-	* transcode.c (output_hex_charref): new function.
-	  (rb_econv_convert): call output_hex_charref if
-	  ECONV_UNDEF_HEX_CHARREF.
-	  (Init_transcode): Encoding::Converter::UNDEF_HEX_CHARREF added.
-
-Sat Sep  6 03:52:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_convert): use ECONV_INVALID_MASK and
-	  ECONV_UNDEF_MASK.
-
-Sat Sep  6 06:05:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/ruby.h (DBL2NUM): renamed from DOUBLE2NUM.
-	  a patch from Tadashi Saito <shiba at mail2.accsnet.ne.jp>
-	  in [ruby-dev:36102].
-
-Sat Sep  6 04:44:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (Init_Proc): add '===' operator to use procs in when
-	  clause of the case statement.  inspired by <http://www.aimred.com/news/developers/2008/08/14/unlocking_the_power_of_case_equality_proc/>.
-
-Sat Sep  6 03:18:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (allocate_converted_string): add arguments for a buffer
-	  allocated by caller.
-	  (rb_econv_insert_output): provide caller allocated buffer to
-	  allocate_converted_string.
-
-Sat Sep  6 02:58:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode_enc_args): local variables renamed.
-	  (str_transcode0): ditto.
-
-Sat Sep  6 02:23:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_s_stateless_encoding): new method.
-
-Sat Sep  6 02:01:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (enc_arg): extracted from str_transcode_enc_args.
-	  (str_transcode_enc_args): use enc_arg.
-
-Fri Sep  5 20:27:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_modestr_fmode): renamed from
-	  rb_io_mode_flags.
-	  (rb_io_modestr_oflags): renamed from rb_io_mode_modenum.
-	  (rb_io_oflags_fmode): renamed from rb_io_modenum_flags.
-	  (rb_io_mode_flags): defined as a macro.
-	  (rb_io_modenum_flags): ditto.
-
-	* io.c: follow the renaming with consistency.
-
-	* process.c (check_exec_redirect): call rb_io_modestr_oflags.
-
-	* ext/pty/depend: pty.o depends on io.h.
-
-Fri Sep  5 20:12:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans (universal_newline_finish): new function.
-
-Fri Sep  5 20:07:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_mode_modenum): moved from
-	  include/ruby/intern.h.
-
-Fri Sep  5 19:59:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (MODENUM_MAX): removed.
-
-Fri Sep  5 18:37:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (copy_stream_fallback_body): use read method unless readpartial
-	  is available.  [ruby-dev:36124]
-
-Fri Sep  5 18:16:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_create): strips glibc style option before
-	  charset mapping.  retries without options if they seemed causing
-	  error, and warns.  [ruby-dev:36147]
-
-Fri Sep  5 03:09:48 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (iseq_data_to_ary): make it static.
-
-	* thread.c (thgroup_enclose): ditto.
-
-Fri Sep  5 02:56:37 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (thread_recycle_stack_slot, thread_recycle_stack_count):
-	  make it static.
-
-Fri Sep  5 02:40:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_critical): removed.
-
-Fri Sep  5 01:22:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (argf_mark): mark p->encs.ecopts.
-
-Fri Sep  5 00:45:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): rename fields:
-	  from_encoding -> src_encoding, to_encoding -> dst_encoding.
-
-	* transcode.c: follow the renaming.
-
-Fri Sep  5 00:22:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c: variables renamed for consistency.
-
-Fri Sep  5 00:05:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* pack.c (encodes): make buff fixed length to avoid SEGV by
-	  ruby -e '["a"*10000000].pack("m1000000000")'
-
-Thu Sep  4 23:47:05 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_mode): set exception mode
-	  correctly.  In spite of BigDecimal.mode(BigDecimal::EXCEPTION_ALL,
-	  true), BigDecimal.new("NaN") did not raise an exception previously.
-
-Thu Sep  4 23:42:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_file_open_str): declared.
-
-	* io.c (rb_file_open_str): defined.
-
-	* ext/zlib/zlib.c (gzfile_s_open): use rb_file_open_str instead of
-	  rb_file_open.
-
-Thu Sep  4 23:18:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans: record newline types met in universal
-	  newline decoder.
-
-Thu Sep  4 23:05:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/prime.rb (Prime::OldCompatibility#each): added compatibility to
-	    Ruby 1.8.7.
-	  (Prime#each): added more rdocs.
-	  (Prime#each): remembers the last value of the given block.
-
-Thu Sep  4 21:53:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_init): accept an integer as 3rd argument as well.
-
-Thu Sep  4 21:46:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (sym_partial_input): new variable.
-	  (econv_primitive_convert): accept a hash as 5th argument as well.
-
-Thu Sep  4 21:04:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (sym_universal_newline_decoder): new variable.
-	  (sym_crlf_newline_encoder): ditto.
-	  (sym_cr_newline_encoder): ditto.
-	  (econv_opts): check newline converter options.
-	  (econv_init): make 3rd argument hash/nil only.
-
-Thu Sep  4 21:03:28 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_dump.c: rename some debug functions.
-
-Thu Sep  4 20:57:54 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_check_trap_pending): added for compatibility.
-
-	* ext/tk/tcltklib.c, ext/tk/tkutil/tkutil.c: remove ruby/signal.h
-	  dependency.
-
-Thu Sep  4 20:30:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (PType): defined unconditionally.
-
-	* transcode.c (PType): don't define here.
-
-Thu Sep  4 20:19:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: variables renamed for consistency.
-
-Thu Sep  4 19:40:50 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_profile_record_get): to static function.
-	  (gc_profile_result): ditto.
-	  (gc_profile_report): ditto.
-
-Thu Sep  4 19:20:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_enc_t): rename flags to ecflags.
-	  (rb_io_t): rename writeconv_pre_flags to writeconv_pre_ecflags.
-	  (MakeOpenFile): follow the renaming.
-
-	* io.c: follow the renaming.
-
-Thu Sep  4 19:10:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_INVALID_IGNORE): removed because
-	  it tend to cause security problem.  If the behaviour is really
-	  required, ECONV_INVALID_REPLACE with empty string can be used.
-	  For example, CVE-2006-2313, CVE-2008-1036, [ruby-core:15645],
-	  http://unicode.org/reports/tr36/
-	  (ECONV_UNDEF_IGNORE): ditto.
-
-	* transcode.c (rb_econv_convert): follow the above change.
-	  (econv_opts): ditto.
-	  (Init_transcode): ditto.
-
-Thu Sep  4 13:22:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct rb_vm_struct): replaced signal staff with trap
-	  staff.
-
-	* signal.c (signal_buff): per process resource now.
-
-	* signal.c (trap_list): moved to VM.
-
-	* signal.c (rb_get_next_signal): reverted.
-
-	* signal.c (rb_trap_exit): trap_pending_list was no longer used.
-
-	* thread.c (timer_thread_function): delivers buffered per-process
-	  signals to each VMs.
-
-	* vm.c (rb_vm_mark): marks trap_list.
-
-Thu Sep  4 13:01:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (struct sysopen_struct, rb_sysopen_internal, rb_sysopen):
-	  constified.
-
-	* io.c: expanded ARGF members macros.
-
-Thu Sep  4 10:43:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb (citrus_decode_mapsrc): support older 1.8.
-
-Thu Sep  4 10:33:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_next_argv, argf_set_encoding): copy struct wise.
-
-Thu Sep  4 09:46:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_scan_open_args): follow rb_str_transcode change.
-
-Thu Sep  4 08:59:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (rb_find_file): fix GC problem on Debian GNU/Linux (IA64)
-	  with gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21).
-	  There is no register/memory to contain load_path.  A register (r35)
-	  contains &RARRAY_PTR(load_path), (char*)load_path + 32.
-
-Thu Sep  4 03:10:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): new fields: encs.ecopts and
-	  writeconv_pre_ecopts.
-	  (MakeOpenFile): initialize them.
-
-	* include/ruby/encoding.h (rb_str_transcode): take ecopts argument.
-	  (rb_econv_flags): removed.
-	  (rb_econv_prepare_opts): declared.
-	  (rb_econv_open_opts): declared.
-
-	* io.c (make_writeconv): use rb_econv_open_opts.
-	  (make_readconv): ditto.
-	  (io_fwrite): follow rb_str_transcode change.
-	  (rb_io_extract_modeenc): use rb_econv_prepare_opts.
-	  (rb_file_open_generic): initialize encs.ecopts.
-	  (rb_file_open_internal): ditto.
-	  (rb_io_reopen): ditto.
-	  (argf_ecopts): defined.
-	  (argf_next_argv): set encs.ecopts.
-	  (io_encoding_set): use rb_econv_prepare_opts.
-	  (argf_set_encoding): set argf_ecopts.
-
-	* gc.c (gc_mark_children): mark encs.ecopts and writeconv_pre_ecopts
-	  in T_FILE.
-
-	* transcode.c (transcode_loop): take ecopts argument. use
-	  rb_econv_open_opts.
-	  (rb_econv_flags): removed.
-	  (rb_econv_prepare_opts): defined.
-	  (rb_econv_open_opts): defined.
-	  (str_transcode0): take ecopts.
-	  (str_transcode): use rb_econv_prepare_opts.
-	  (rb_str_transcode): take ecopts.
-	  (econv_init): accept hash argument.
-	  (econv_insert_output): follow rb_str_transcode change.
-
-Thu Sep  4 01:30:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_set_replacemenet): declared.
-
-	* transcode.c (rb_econv_t): new fields: replacement_str,
-	  replacement_len, replacement_enc and replacement_allocated.
-	  (get_replacement_character): make len as size_t.
-	  (rb_econv_open_by_transcoder_entries): initialize the new fields.
-	  (rb_econv_close): deallocate replacement_str if it allocated.
-	  (make_replacement): new function.
-	  (output_replacement_character): use make_replacement.
-	  (rb_econv_set_replacemenet): defined.
-	  (econv_get_replacement): new method.
-	  (econv_set_replacement): new method.
-
-Thu Sep  4 01:12:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (filetime_to_timeval): new function, split from
-	  gettimeofday().
-
-	* win32/win32.c (gettimeofday): use above function.
-
-	* win32/win32.c (filetime_to_unixtime): ditto. [ruby-dev:36135]
-
-Thu Sep  4 01:00:57 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* transcode.c (transcode_restartable0): avoid VC++6's bug.
-
-Thu Sep  4 00:26:27 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (make_writeconv): follow akr's previous commit.
-
-Thu Sep  4 00:09:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_option_t): removed.  Since
-	  rb_econv_option_t has only one field, int flags, rb_econv_option_t is
-	  replaced by int.
-
-	* include/ruby/io.h: follow the above change.
-
-	* io.c: ditto.
-
-	* transcode.c: ditto.
-
-Thu Sep  4 00:04:59 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* win32/win32.c: fix ruby/signal.h depending codes.
-
-Thu Sep  4 00:01:45 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb (test_getpwuid, test_getgrgid): use
-	  Process.euid and egid instead of Etc.getlogin to identify current
-	  user which may be different from a login one (e.g., su command).
-
-Wed Sep  3 23:52:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb: check only typical use of
-	  setpwent/getpwent/endpwent and setgrent/getgrent/endgrent.
-
-Wed Sep  3 23:33:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_transcoding): moved from transcode_data.h.
-	  (TRANSCODING_READBUF): ditto.
-	  (TRANSCODING_WRITEBUF): ditto.
-	  (TRANSCODING_STATE_EMBED_MAX): ditto.
-	  (TRANSCODING_STATE): ditto.
-
-Wed Sep  3 23:03:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): remove stateful field.
-	  add state field.
-	  (TRANSCODING_STATE): defined.
-	  (rb_transcoder): add fields: state_size, state_init_func,
-	  state_fini_func.
-	  change rb_transcoding* argument to void*.
-
-	* transcode.c (transcode_restartable0): use TRANSCODING_STATE for
-	  first arguments of transcoder functions.
-	  (rb_transcoding_open_by_transcoder): initialize state field.
-	  (rb_transcoding_close): finalize state field.
-
-	* tool/transcode-tblgen.rb: provide state size/init/fini.
-
-	* enc/trans/newline.trans (universal_newline_init): defined.
-	  (fun_so_universal_newline): take void* as a state pointer.
-	  (rb_universal_newline): provide state size/init/fini.
-	  (rb_crlf_newline): ditto.
-	  (rb_cr_newline): ditto.
-
-	* enc/trans/iso2022.trans (iso2022jp_init): defined.
-	  (fun_si_iso2022jp_to_eucjp): take void* as a state pointer.
-	  (fun_so_iso2022jp_to_eucjp): ditto.
-	  (fun_so_eucjp_to_iso2022jp): ditto.
-	  (iso2022jp_reset_sequence_size): ditto.
-	  (finish_eucjp_to_iso2022jp): ditto.
-	  (rb_ISO_2022_JP_to_EUC_JP): provide state size/init/fini.
-	  (rb_EUC_JP_to_ISO_2022_JP): ditto.
-
-	* enc/trans/utf_16_32.trans (fun_so_from_utf_16be): take void* as a
-	  state pointer.
-	  (fun_so_to_utf_16be): ditto.
-	  (fun_so_from_utf_16le): ditto.
-	  (fun_so_to_utf_16le): ditto.
-	  (fun_so_from_utf_32be): ditto.
-	  (fun_so_to_utf_32be): ditto.
-	  (fun_so_from_utf_32le): ditto.
-	  (fun_so_to_utf_32le): ditto.
-	  (rb_from_UTF_16BE): provide state size/init/fini.
-	  (rb_to_UTF_16BE): ditto.
-	  (rb_from_UTF_16LE): ditto.
-	  (rb_to_UTF_16LE): ditto.
-	  (rb_from_UTF_32BE): ditto.
-	  (rb_to_UTF_32BE): ditto.
-	  (rb_from_UTF_32LE): ditto.
-	  (rb_to_UTF_32LE): ditto.
-
-	* enc/trans/japanese.trans (fun_so_eucjp2sjis): take void* as a state
-	  pointer.
-	  (fun_so_sjis2eucjp): ditto.
-	  (rb_eucjp2sjis): provide state size/init/fini.
-	  (rb_sjis2eucjp): provide state size/init/fini.
-
-Wed Sep  3 22:31:11 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/mathn.rb (Integer): moved into prime.rb.
-	  (Prime): ditto.
-
-	* lib/prime.rb (Integer): moved from mathn.rb.
-	  (Integer.each_prime): added.
-	  (Integer#prime?): added.
-	  (Prime): moved from mathn.rb.
-	    Its implementation was rewritten. see [ruby-dev:35863].
-	    And patched by Keiju ISHITSUKA <keiju@ishitsuka.com>,
-	    see [ruby-dev:36128].
-	  (Prime.new):                     obsolete.
-	  (Prime.instance):                added.
-	  (Prime.each):                    added.
-	  (Prime.int_from_prime_division): added.
-	  (Prime.prime_division):          added.
-	  (Prime.prime?):                  added.
-	    Patch by TOYOFUKU Chikanobu
-	    <nobu_toyofuku at nifty.com> in [ruby-dev:36067].
-	  (Prime.cache):                   removed.
-	  (Prime.primes):                  removed.
-	  (Prime.primes_so_far):           removed.
-	  (Prime#int_from_prime_division): added.
-	  (Prime#prime_division):          added.
-	  (Prime#prime?):                  added.
-	  (Prime#primes):                  removed.
-	  (Prime#primes_so_far):           removed.
-	  (Prime::PseudoPrmeGenerator):    added.
-	  (Prime::EratosthenesGenerator):  added.
-	  (Prime::TrialDivisionGenerator): added.
-	  (Prime::Generator23):            added.
-	  (Prime::TrialDivision):          added.
-	    Extracted from the previous implementation of Prime
-	    by Keiju ISHITSUKA.
-	  (Prime::EratosthenesSieve):      added.
-
-	* lib/.document (prime.rb): added
-
-	* lib/README (prime.rb): added
-
-	* test/test_prime.rb: added.
-
-Wed Sep  3 21:49:00 2008  David A. Black  <dblack@rubypal.com>
-
-	* lib/scanf.rb: fixed bug involving matching literal '['
-
-	* test/scanf/test_scanf.rb: added test for scanf.rb fix
-
-Wed Sep  3 21:31:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (WORDINDEX_SHIFT_BITS): defined.
-	  (WORDINDEX2INFO): defined.
-	  (INFO2WORDINDEX): defined.
-
-	* tool/transcode-tblgen.rb: use WORDINDEX2INFO.
-
-	* transcode.c: use INFO2WORDINDEX.
-
-Wed Sep  3 21:19:51 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* golf_prelude.rb: suppress warnings when goruby -v.
-
-Wed Sep  3 21:07:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (BL_MIN_BYTE): defined.
-	  (BL_MAX_BYTE): defined.
-	  (BL_OFFSET): defined.
-	  (BL_ACTION): defined.
-	  (transcode_restartable0): use BL_MIN_BYTE, BL_MAX_BYTE and
-	  BL_ACTION.
-
-Wed Sep  3 20:58:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (BYTE_ADDR): defined.
-	  (WORD_ADDR): ditto.
-	  (BL_BASE): use BYTE_ADDR and WORD_ADDR.
-	  (BL_INFO): use WORD_ADDR.
-
-Wed Sep  3 20:47:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): new field: byte_array_length and
-	  word_array_length.
-
-	* tool/transcode-tblgen.rb (transcode_generated_code): generate
-	  byte_array_length and word_array_length.
-
-Wed Sep  3 20:34:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ArrayCode): new class.
-	  (ActionMap#gen_array_code): moved to ArrayCode.
-	  (ActionMap#numelt_array_code): ditto.
-	  (ActionMap#array_code_insert_at_last): ditto.
-	  (TRANSCODE_GENERATED_BYTES_CODE): use ArrayCode.
-	  (TRANSCODE_GENERATED_WORDS_CODE): ditto.
-
-Wed Sep  3 20:08:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/japanese.trans: new file.
-
-Wed Sep  3 20:04:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ActionMap#gen_array_code): extracted from
-	  generate_lookup_node.
-	  (ActionMap#numelt_array_code): ditto.
-	  (ActionMap#array_code_insert_at_last): ditto.
-
-Wed Sep  3 20:01:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (parser_encoding_name): defined.
-	  (parser_tokadd_mbchar): show encoding in the message of
-	  "invalid multibyte char" error.
-
-Wed Sep  3 19:28:04 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_method_missing): C99.
-
-Wed Sep  3 19:18:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_thread.rb: fix test.
-	   [ruby-dev:35960]
-
-Wed Sep  3 17:48:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/make_transdb.rb: check $(srcdir)/enc/trans before
-	  enc/trans.
-
-	* enc/trans/make_transdb.rb: keep names_t.
-
-Wed Sep  3 16:54:46 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/signal.h: removed.
-
-	* common.mk, class.c, eval.c, eval_intern.h, file.c, gc.c, hash.c,
-	  io.c, process.c, signal.c: vm_core.h: ditto.
-	  Some unused external global variables are also removed.
-	 (rb_prohibit_interrupt, rb_trap_immediate, rb_trap_pending,
-	  rb_thread_critical)
-
-	* ext/openssl/ossl_ssl.c, ext/openssl/ossl_x509store.c,
-	  ext/readline/readline.c, ext/socket/depend,
-	  ext/socket/socket.c: ditto.
-
-Wed Sep  3 00:23:25 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_insnhelper.c (vm_method_missing): copy arguments to allocated
-	  memory from machine stack.  [ruby-dev:36064]
-
-Tue Sep  2 22:20:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (base_element): removed.
-	  (BYTE_LOOKUP): removed.
-	  (BYTE_LOOKUP_BASE): don't cast.
-	  (BYTE_LOOKUP_INFO): ditto.
-	  (PType): unsigned int, instead of uintptr_t.
-	  (rb_transcoding): change type of next_field, conv_tree_start and
-	  word_array.
-
-	* tool/transcode-tblgen.rb: generate word_array as array of unsigned
-	  int.
-
-	* transcode.c (transcode_restartable0): follow the above type change.
-
-Tue Sep  2 21:22:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: add prefix for byte_array and word_array.
-
-Tue Sep  2 20:57:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/make_transdb.rb: check foo.c only if foo.trans exists.
-
-Tue Sep  2 19:19:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/make_transdb.rb: error message improved.
-
-Tue Sep  2 14:05:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/trans/utf_16_32.trans (from_UTF_8): rename from to_UTF_16BE
-	  because it was not collect.
-
-Tue Sep  2 14:00:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* enc/emacs_mule.c (svn:executable): dropped executable bit.
-
-	* enc/make_encdb.rb (svn:executable): ditto.
-
-Tue Sep  2 12:58:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (COMPILERFLAG): new compiler flag to compile
-	  enc/trans/japanese*.c.
-
-Tue Sep  2 12:37:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/japanese_euc.trans: splitted from japanese.trans to avoid
-	  compiler limitation.  reported by usa.
-
-	* enc/trans/japanese_sjis.trans: ditto.
-
-Tue Sep  2 12:31:24 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (miniruby): new target.
-
-Tue Sep  2 11:47:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (struct load_arg): data is now st_table.
-
-	* marshal.c (mark_load_arg): marks data and compat_tbl.
-
-	* marshal.c (r_object0): no need to check if reentered.
-
-	* marshal.c (marshal_load): make the wrapper with mark_load_arg.
-
-Tue Sep  2 10:49:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (gettimeofday): easier calculation. use the definition
-	  of the Gregorian calendar.
-
-Tue Sep  2 10:33:12 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (distclean-golf): moved golf_prelude.c here from
-	    distclean-local.
-	  (GOLFPRELUDE): added.
-	  (distclean-local): moved golf_prelude.c into distclean-golf.
-
-Tue Sep  2 10:09:17 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (gettimeofday): calc tv_sec and tv_usec from system
-	  time by myself. [ruby-dev:36084]
-
-Tue Sep  2 04:00:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (o3): prevent sign extension on 64bit environment.
-	  (o4): ditto.
-
-Tue Sep  2 03:26:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: comment removed in generated code.
-
-Tue Sep  2 03:16:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: define TRANSCODE_TABLE_INFO in generated
-	  code.  use it in rb_transcoder.
-
-	* enc/trans/newline.trans: use TRANSCODE_TABLE_INFO.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-Tue Sep  2 03:04:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: record infos and BYTE_LOOKUPs as index of
-	  word_array to avoid relocation.
-
-	* transcode.c (transcode_restartable0): add word_array to get infos
-	  and BYTE_LOOKUPs.
-
-	* transcode_data.h (BYTE_LOOKUP_INFO): change return type to
-	  uintptr_t.
-
-Tue Sep  2 02:48:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: don't need to cast offsets array.
-
-Tue Sep  2 02:36:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: record offsets array as index of
-	  byte_array to avoid relocation.
-
-	* transcode.c (transcode_restartable0): add byte_array to get offsets
-	  array.
-
-	* transcode_data.h (BYTE_LOOKUP_BASE): change return type to
-	  uintptr_t.
-	  (rb_transcoder): add fields: byte_array, word_array and word_size.
-
-	* enc/trans/newline.trans: follow rb_transcoder change.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-Tue Sep  2 02:05:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: make infos arrays and BYTE_LOOKUPs into
-	  single array.
-
-Tue Sep  2 01:47:44 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (clean-golf): added.
-	  (distclean-golf): added.
-	  (realclean-golf): added.
-	  (clean): added clean-golf.
-	  (distclean): added distclean-golf.
-	  (realclean): added realclean-golf.
-
-Tue Sep  2 01:31:45 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (realclean-local): added newline.c.
-
-Tue Sep  2 01:19:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (BYTE_LOOKUP): change to uintptr_t array.
-	  (BYTE_LOOKUP_BASE): follow the type change.
-	  (BYTE_LOOKUP_INFO): ditto.
-	  (PType): ditto.
-	  (rb_transcoding): ditto.
-
-	* tool/transcode-tblgen.rb: follow the type change.
-
-	* transcode.c: ditto.
-
-	* enc/trans/newline.trans: ditto.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-Mon Sep  1 23:32:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (BYTE_LOOKUP_BASE): abstract accessor for
-	  BYTE_LOOKUP.
-	  (BYTE_LOOKUP_INFO): ditto.
-
-	* transcode.c (transcode_restartable0): use BYTE_LOOKUP_BASE and
-	  BYTE_LOOKUP_INFO.
-
-Mon Sep  1 23:14:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: gather infos arrays and BYTE_LOOKUPs.
-
-Mon Sep  1 22:42:54 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* lib/mkmf.rb (distclean): added RM_RF conftest.dSYM.
-	  Fixes distclean-ext problem on Mac OS X.
-	  (RM_RF): added.
-
-Mon Sep  1 22:37:06 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/rexml/document.rb: limit entity expansion.  Thanks, Luka
-	  Treiber, Mitja Kolsek, and Michael Koziarski.
-
-	* lib/rexml/entity.rb: ditto.
-
-	* test/rexml/test_document.rb: ditto.
-
-Mon Sep  1 22:20:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: make offsets arrays into single array.
-
-Mon Sep  1 21:46:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: gather offsets arrays at top.
-
-Mon Sep  1 21:09:04 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ./: removed rubyspec from svn:ignore subversion property.
-	  rubyspec directory is no longer used.
-
-	* spec: added mspec and rubyspec to svn:ignore.
-
-Mon Sep  1 19:37:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: ValidEncoding['eucJP-ms'] defined.
-	  "\xA2\xAF".encode("utf-8", "eucJP-ms") should raise
-	  Encoding::ConversionUndefined, not Encoding::InvalidByteSequence.
-
-Mon Sep  1 18:27:51 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (gettimeofday): shouldn't use mktime(3) because it's
-	  buggy about handling summer time.
-	  reported by Yoshikawa <yoshixool AT gmail.com> at [ruby-dev:36071]
-
-Mon Sep  1 17:07:23 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/euc_jp.c (euc-jp-ms): euc-jp-ms is not an alias of EUC-JP
-	  but eucJP-ms.
-
-	* enc/trans/japanese.trans (eucJP-ms): eucJP-ms is the correct
-	  name of the encoding in Ruby. [ruby-dev:36070]
-
-Mon Sep  1 16:48:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/md5/md5init.c (md5), ext/digest/rmd160/rmd160init.c
-	  (rmd160) ext/digest/sha1/sha1init.c (sha1),
-	  ext/digest/sha2/sha2init.c (sha256, sha384, sha512): constified.
-
-Mon Sep  1 15:15:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.trans: fix mapping priority.
-	  IBM extended is prior than NEC selected IBM.
-
-Mon Sep  1 14:44:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb (transcode_compile_tree): use the first
-	  mapping when some mappings are given for a character.
-	  [ruby-dev:36068]
-
-	* tool/transcode-tblgen.rb: expandtab.
-
-Mon Sep  1 14:40:18 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* README.EXT (Appendix A): fixed the name of class
-	  Enumerator. Enumerable::Enumerator was renamed just
-	  Enumerator at revision 18564.
-
-	* README.EXT (Appendix A): ditto.
-
-Mon Sep  1 14:37:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb: set ERB source filename for error message.
-
-Mon Sep  1 14:37:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend: transdb.c may not present.
-
-Mon Sep  1 14:25:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.trans: fix Ruby 1.8 compatibility.
-
-	* enc/trans/japanese.trans: fix mapping priority. [ruby-dev:36068]
-
-Mon Sep  1 14:24:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_transcode.rb (test_windows_31j): added.
-
-Mon Sep  1 14:00:04 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* README.EXT (Data-types): fixed for current status.
-	  (Manipulating Ruby data): mentioned some more functions.
-	  (Class/module definition): ditto.
-	  (Global variables shared between C and Ruby):
-	    fixed prototypes for the getter/setter's of global variables.
-	  (Appendix A): mentioned some more files.
-
-	* README.EXT.ja: ditto.
-
-Mon Sep  1 11:31:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (copy_stream, fu_copy_stream0, copy_file): use
-	  IO.copy_stream to get rid of extraneous conversion.
-
-Mon Sep  1 02:55:15 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* strftime.c (rb_strftime): calc timezone offset by myself if system
-	  doesn't provide timezone info.
-
-Mon Sep  1 02:48:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: change "illegal" to "invalid".
-
-Mon Sep  1 02:31:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (transcode_generated_code): defined for
-	  generating table at once.
-	  (transcode_tblgen): returns an empty string.
-	  (transcode_generate_node): ditto.
-
-	* enc/trans/newline.trans: use transcode_generated_code.
-
-	* enc/trans/iso2022.trans: ditto.
-
-	* enc/trans/single_byte.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-	* enc/trans/korean.trans: ditto.
-
-Mon Sep  1 02:10:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (citrus_decode_mapsrc): print logging
-	  message on STDERR.
-
-Mon Sep  1 01:24:09 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/eucjp-tbl.rb: replace by previous Citrus maps.
-
-	* enc/trans/sjis-tbl.rb: ditto.
-
-Mon Sep  1 01:18:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb: add table generator from Citrus maps.
-
-	* enc/trans/japanese.trans: use Citrus maps.
-
-	* enc/trans/CP: add maps from Citrus.
-
-	* enc/trans/JIS: ditto.
-
-	* test/ruby/test_transcode.rb: Shift_JIS and EUC-JP doesn't support
-	  IBM extended characters.
-
-Mon Sep  1 00:19:45 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (docs): removed a useless make target.
-	  tool/makedoc.rb was removed at revision 13919.
-
-Sun Aug 31 20:49:42 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (numeric_abs2): new.
-
-Sun Aug 31 18:22:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (have_devel?): checks if the compiler works.
-
-Sun Aug 31 18:02:41 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Temporarily uses git://github.com/yugui/rubyspec.git
-	  until specs for 1.9 is merged into
-	  git://github.com/rubyspec/rubyspec.git.
-
-Sun Aug 31 18:06:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode.c): set source_encoding and
-	  destination_encoding as encoding object.
-	  (ecerr_source_encoding): new method.
-	  (ecerr_destination_encoding): ditto.
-
-Sun Aug 31 17:58:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (Logging.log_open): opens in binary mode to get rid of
-	  extra CR.
-
-	* lib/mkmf.rb (try_func, try_var, have_struct_member),
-	  (scalar_ptr_type?, scalar_type?): use MAIN_DOES_NOTHING.
-
-	* lib/mkmf.rb (MAIN_DOES_NOTHING): defaults to ordinary main.
-
-	* win32/Makefile.sub (config): for MAIN_DOES_NOTHING for wince.
-
-Sun Aug 31 17:30:35 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/README (How to run): added.
-
-Sun Aug 31 17:28:25 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* spec/default.mspec (config): added.
-
-	* spec/default.mspec (target): replaced the built ruby
-	  to runruby.rb.
-	  Improved $LOAD_PATH on running specs.
-
-	* spec/default.mspec (flags): ditto.
-
-Sun Aug 31 17:16:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): rename instance variable names
-	  for storing encoding names.
-	  (ecerr_source_encoding_name): method renamed.
-	  (ecerr_destination_encoding_name): ditto.
-
-Sun Aug 31 16:57:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_putback): associate encoding to the result.
-
-Sun Aug 31 16:43:56 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/intern.h: rename RB_UBF_DFL to
-	  RUBY_UBF_IO and RUBY_UBF_PROCESS.
-	  Because there is no default (universal) unblocking function.
-
-	* ext/socket/socket.c, file.c, io.c, process.c, thread.c: ditto.
-
-Sun Aug 31 16:42:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_insert_output): raise ArgumentError on failure.
-
-Sun Aug 31 16:39:17 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_thread.rb: add a test.
-
-Sun Aug 31 16:34:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/single_byte.trans (us_ascii_map): don't define 8bit bytes.
-
-Sun Aug 31 14:27:27 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_last_error): new method.
-
-Sun Aug 31 14:17:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): make two arguments,
-	  destination_byteoffset and destination_bytesize, optional.
-
-Sun Aug 31 14:12:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): error message simplified.
-
-Sun Aug 31 13:47:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/coverage/coverage.c (rb_mCoverage): removed unneeded static variable.
-
-	* ext/socket/socket.c (unix_recv_io): ditto.
-
-	* ext/socket/socket.c (mConst): ditto.
-
-Sun Aug 31 13:45:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspres_initialize): fix for
-	  initialization of r18168.
-
-Sun Aug 31 13:42:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/ripper/eventids2.c (ripper_init_eventids2): use rb_intern_const.
-
-	* ext/ripper/tools/generate.rb (generate_eventids1): ditto.
-
-	* ext/ripper/tools/generate.rb (generate_eventids2_table): ditto.
-
-Sun Aug 31 12:56:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb (rb_dl_init_callbacks): fix indent.
-
-Sun Aug 31 11:39:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/strscan/strscan.c (strscan_do_scan): fix usecnt decrement.
-
-Sun Aug 31 04:38:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_putback): make max argument optional.
-
-Sun Aug 31 04:35:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_putback): putback from last byte.
-
-Sun Aug 31 04:27:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_putback): renamed from econv_primitive_putback.
-
-Sun Aug 31 04:22:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_insert_output): renamed from
-	  econv_primitive_insert_output.
-
-Sun Aug 31 04:20:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_econv.rb: follow econv_primitive_errinfo change.
-
-Sun Aug 31 03:44:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_errinfo): 5th element (partial_input)
-	  removed from result.
-
-Sun Aug 31 01:53:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb: split callback.h to callback-[0-9].c to reduce
-	  memory consumption on compilation.  [ruby-dev:31898]
-
-	* ext/dl/depend: add dependency for callback-[0-9].[co].
-
-Sun Aug 31 01:27:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb (foreach_proc_entry): extracted.
-	  (gencallback): ditto.
-	  (gen_push_proc_ary): ditto.
-	  (gen_push_addr_ary): ditto.
-
-Sat Aug 30 23:51:01 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/rinda/test_tuplebag.rb (test_has_expires_eh): fix failures
-	  [ruby-dev:35937].
-
-Sat Aug 30 23:38:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/test/test_import.rb: fix character code.
-
-	* ext/dl/test/test_func.rb: ditto.
-
-Sat Aug 30 22:23:31 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: added a static variable for nurat_to_f.
-
-Sat Aug 30 20:05:41 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_open, rb_w32_read, rb_w32_write): fallback to
-	  MSVCRT if text mode is specified. this case will not be used from
-	  ruby itself.
-
-Sat Aug 30 19:49:38 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read): EOF is not error.
-	  ref [ruby-dev:36050]
-
-Sat Aug 30 18:17:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (struct token_info): constified.
-
-	* parse.y (token_info_get_column, token_info_has_nonspaces),
-	  (token_info_push, token_info_pop): constified.
-
-Sat Aug 30 15:43:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/openssl/ossl_config.c (Init_ossl_config): memory leak fixed.
-	  a patch <shinichiro.hamaji at gmail.com> in [ruby-dev:35880].
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_set_value): ditto.
-
-	* ext/strscan/strscan.c (strscan_do_scan): ditto.
-
-Sat Aug 30 14:58:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_x509ext.c (ossl_x509ext_initialize): fix for
-	  initialization of r18168.
-
-Sat Aug 30 14:47:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb: fix continuation line detection.
-
-Sat Aug 30 14:39:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/dl/mkcallback.rb (rb_dl_init_callbacks): avoid GC problem which
-	  is caused by 'GC.stress=true; require "dl"'.
-
-Sat Aug 30 11:54:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (token_info_push): -w warns indentation level mismatch.
-	  based on a patch from Yukina Yamano presented at RubyKaigi'07.
-	  See <http://jp.rubyist.net/RubyKaigi2007/Log0609-LT06.html> and
-	  <http://www.logic-junction.com/products/rubyend.html> (Japanese).
-
-Sat Aug 30 10:46:44 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/iconv/iconv.c: remove include pragma for "ruby/intern.h".
-
-Sat Aug 30 10:43:03 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* parse.y: remove include pragma for "ruby/intern.h".
-
-Sat Aug 30 10:41:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (Rake::Application#help): fix for OPTIONAL_ARGUMENT and
-	  multiple short options.  [ruby-dev:36051]
-
-Sat Aug 30 08:59:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_file_s_absolute_path),
-	  (rb_file_absolute_path): prototyped.
-
-Sat Aug 30 08:09:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_compatible_p): use TYPE not BUILTIN_TYPE.
-	  [ruby-dev:36048]
-
-Sat Aug 30 07:48:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_compatible_p): add SPECIAL_CONST_P check.
-	  [ruby-dev:36048]
-
-	* test/ruby/test_m17n.rb (test_compatible): fix test.
-
-Sat Aug 30 02:48:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_freeze): update rdoc to mention RuntimeError
-	  (not TypeError any longer) would be raised.  [ruby-dev:35982]
-
-Sat Aug 30 01:55:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (bigdivmod): remove redundant code.  a patch from
-	  TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com> in [ruby-dev:36044].
-
-Sat Aug 30 01:37:20 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#initialize): remove unused constants.  a patch
-	  from Takeyuki Fujioka in [ruby-dev:36046].
-
-Fri Aug 29 22:29:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c ({nucomp,numeric}_rect): new.
-
-	* complex.c: added some aliases
-	  (::rectangular, ::rect, #rectangular, #rect, #phase,
-	  #magnitude).
-
-	* complex.c (string_to_c_internal): should not strip any null
-	  bytes.
-
-	* rational.c (string_to_r_internal): ditto.
-
-	* rational.c (i_gcd): reverted to nurat 0.0.2's one.
-
-	* numeric.c: added an alias (#magnitude).
-
-	* bignum.c: ditto.
-
-	* test/ruby/test_complex.rb: added assertions.
-
-	* test/ruby/test_rational.rb: ditto.
-
-Fri Aug 29 19:46:02 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c, include/ruby/ruby.h: rename T_DEFERRED to T_ZOMBIE.
-
-Fri Aug 29 18:22:27 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_compatible_p): raise TypeError when argument is not
-	  String nor Regexp.
-
-Fri Aug 29 18:20:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_index_m): only regexp uses byte offset.
-
-	* string.c (rb_str_rindex_m): ditto.
-
-Fri Aug 29 16:48:34 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_call_method): copy arguments to allocated
-	  memory from machine stack.  [ruby-dev:36028]
-
-	* KNOWNBUGS.rb, bootstraptest/test_method.rb: move fixed test.
-
-Fri Aug 29 12:19:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_x509attr.c (ossl_x509attr_initialize): fix for
-	  initialization of r18168.
-
-	* ext/openssl/ossl_ocsp.c (ossl_ocspreq_initialize): ditto.
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_initialize): ditto.
-
-Fri Aug 29 11:04:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): ASCII compatible string and US-ASCII
-	  regexp is compatible. [ruby-dev:36033]
-
-	* string.c (rb_str_index_m): second argument is position of character.
-	  by usa. [ruby-dev:36033]
-
-	* string.c (rb_str_rindex_m): ditto.
-
-Fri Aug 29 04:47:49 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_read, rb_w32_write): more accurate handling
-	  of wait result.
-
-Fri Aug 29 02:59:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_finish): new method.
-
-Fri Aug 29 02:45:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_convert): new method.
-
-Fri Aug 29 02:38:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): accept nil as
-	  destination_bytesize for unlimited destination size.
-
-Fri Aug 29 02:11:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): accept nil as input for empty
-	  input.
-
-Fri Aug 29 02:03:56 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): supported %s and %P.
-
-	* time.c (time_strftime): ditto.
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Fri Aug 29 01:57:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (sym_invalid_byte_sequence): new variable.
-	  (sym_undefined_conversion): ditto.
-	  (sym_destination_buffer_full): ditto.
-	  (sym_source_buffer_empty): ditto.
-	  (sym_finished): ditto.
-	  (sym_output_followed_by_input): ditto.
-	  (sym_incomplete_input): ditto.
-	  (econv_result_to_symbol): use above variables.
-	  (Init_transcode): initialize above variables.
-
-Fri Aug 29 00:53:40 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): fixed a bug of padding.
-
-	* test/ruby/test_time.rb: ditto.
-
-Fri Aug 29 00:19:54 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (set_pioinfo_extra): use MSVCRT's open() and close().
-
-Fri Aug 29 00:03:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* file.c (file_expand_path): check invalid access.
-
-Thu Aug 28 23:55:50 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): Time.mktime(2000).strftime("%-S") should
-	  return "0", not "".
-
-	* test/ruby/test_time.rb: ditto.
-
-Thu Aug 28 23:55:22 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_time.rb: suppress warning during test.
-
-Thu Aug 28 23:50:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_time.rb (test_strftime): make test for %a independent
-	  from local timezone.  [ruby-dev:35992]
-
-Thu Aug 28 23:39:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_str_shared_replace): remove corrupt noembed string
-	  which causes SEGV.  [ruby-dev:35989]
-
-Thu Aug 28 23:36:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk: dependency updated.
-
-Thu Aug 28 23:28:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* KNOWNBUGS.rb: add a test.  see [ruby-dev:36028]
-
-Thu Aug 28 21:43:05 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c, include/ruby/win32.h (rb_w32_open): overlapped file
-	  I/O support.
-
-	* win32/win32.c, include/ruby/win32.h (rb_w32_pipe): overlapped pipe
-	  I/O support.
-
-	* win32/win32.c (rb_w32_read, rb_w32_write): overlapped I/O support to
-	  enable canceling I/O.
-
-	* thread_win32.c (ubf_handle): remove workaround.
-
-Thu Aug 28 20:22:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_yield_setup_args): object with to_ary should
-	  behave like array.  a patch from Yusuke Endoh  <mame at tsg.ne.jp>
-	  in [ruby-dev:35988].  [ruby-dev:35977]
-
-	* object.c (convert_type): call less rb_intern() less frequently
-	  by using cache structure.
-
-	* vm_method.c (rb_method_node): fail earlier if no method found.
-
-Thu Aug 28 19:04:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bootstraptest/test_io.rb: no need to create real file.
-
-Thu Aug 28 09:26:53 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_multipart.rb: add test for multipart.
-	  Patch by Takeyuki Fujioka. [ruby-dev:36014]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Thu Aug 28 09:22:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_modruby.rb: add test for mod_ruby adaptor.
-	  Patch by Takeyuki Fujioka. [ruby-dev:36013]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Thu Aug 28 09:17:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_header.rb: add test for CGI::Header.
-	  Patch by Takeyuki Fujioka. [ruby-dev:36010] [ruby-dev:36011]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Thu Aug 28 02:16:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): refcnt field removed.
-	  (MakeOpenFile): refcnt initialization removed.
-
-	* io.c (rb_io_fptr_finalize): don't check refcnt.
-	  (rb_io_close_read): don't use refcnt.
-
-Thu Aug 28 00:07:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_initialize): don't accept IO object.  [ruby-dev:35895]
-
-Wed Aug 27 23:28:51 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_invoke): WIN32OLE#[] and WIN32OLE#[]=
-	  accepts number argument.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Wed Aug 27 14:45:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_core.rb: add core test.
-	  Patch by Takeyuki Fujioka. [ruby-dev:36001] [ruby-dev:36002]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Wed Aug 27 10:34:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::Cookie): remove delegate.
-	  Patch by Takeyuki Fujioka. [ruby-dev:35995]
-
-	* test/cgi/test_cgi_cookie.rb: added for above.
-	  Patch by Takeyuki Fujioka. [ruby-dev:35996]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Wed Aug 27 01:13:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_loop): simplified.
-
-Wed Aug 27 01:03:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_result_t): enumeration constant:
-	  econv_incomplete_input.
-
-	* io.c (finish_writeconv): check econv_incomplete_input.
-
-	* transcode.c (transcode_restartable0): return econv_incomplete_input
-	  for unexpected end of source buffer.
-	  (trans_sweep): check econv_incomplete_input.
-	  (rb_trans_conv): ditto.
-	  (rb_econv_convert0): ditto.
-	  (rb_econv_convert): ditto.
-	  (transcode_loop): ditto.
-	  (make_econv_exception): change message for econv_incomplete_input.
-	  (econv_result_to_symbol): return :incomplete_input for
-	  econv_incomplete_input.
-	  (ecerr_incomplete_input): new method.
-
-Wed Aug 27 00:05:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): rename crbuf to cbuf.
-
-	* io.c: follow the renaming.
-
-Tue Aug 26 23:52:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_elem_t): move to transcode.c
-	  (rb_econv_t): defined as an incomplete type.
-
-	* transcode.c (rb_econv_elem_t): moved from encoding.h.
-	  (rb_econv_t): complete type defined.
-
-Tue Aug 26 22:44:12 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* time.c (time_asctime): workaround for MSVCRT's bug.
-	  based on a patch from wanabe <s.wanabe AT gmail.com> at
-	  [ruby-dev:35831] and a suggestion by KIMURA Koichi
-	  <kbk AT kt.rim.or.jp> at [ruby-dev:35832]
-	  fixed [ruby-dev:35555]
-
-Tue Aug 26 21:53:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): disable newline conversion for ASCII
-	  incompatible encodings.
-	  (str_transcode0): don't need disable newline conversion here.
-
-Tue Aug 26 21:44:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_binmode): binmode is effective only once.
-
-Tue Aug 26 19:43:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (rb_file_s_expand_path): new class method for class File.
-
-	* file.c (file_expand_path): add absolute_path handling (no ~user
-	  expansion).  [ruby-core:18319]
-
-Tue Aug 26 19:27:54 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/ruby/test_enum.rb (TestEnumerable#test_each_with_object):
-	  Add a test for Enumerable#each_with_object.
-
-Tue Aug 26 19:25:44 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* test/ruby/test_enumerator.rb (TestEnumerator#test_with_object):
-	  Add (back) the test for Enumerator#with_object.
-
-Tue Aug 26 16:16:43 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_tag_helper.rb: add more tests for html3.
-	  Patch by Takeyuki Fujioka. [ruby-dev:35975]
-	  From CGIAlt http://cgialt.rubyforge.org/
-
-Tue Aug 26 14:43:10 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c: Activate Enumerator#with_object and add
-	  Enumerable#each_with_object. [experimental]
-
-Tue Aug 26 14:38:32 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_initialize),
-	  test/ruby/test_enumerator.rb: Add an ability to generate an
-	  enumerator from a block. [experimental] [ruby-dev:35903]
-
-Tue Aug 26 13:25:25 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: added test_euc_jp
-	  (contributed by Yoshihiro Kambayashi)
-
-Tue Aug 26 11:54:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/cgi/test_cgi_tag_helper.rb: added by Takeyuki Fujioka.
-	  [ruby-dev:35971]
-
-Tue Aug 26 11:33:30 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (nOE_element_def): fix error when cascade methods which
-	  don't have arguments. Patch by Takeyuki Fujioka. [ruby-dev:35964]
-
-	* lib/cgi.rb (blockquote): String#collect (this depends on
-	  String#each) is no longer exists.
-	  Patch by Takeyuki Fujioka. [ruby-dev:35946]
-
-	* lib/cgi.rb (blockquote): ditto.
-
-Tue Aug 26 03:06:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): copy invalid/undef flags.
-
-Tue Aug 26 02:47:08 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* common.mk (dist): tool/make-snapshot is executable.
-
-	* tool/make-snapshot (package): supported release numbers 1.9.0-x.
-
-Tue Aug 26 02:43:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): new field: writeconv_pre_opts.
-
-	* io.c (make_writeconv): initialize writeconv_pre_opts.
-	  (io_fwrite): use writeconv_pre_opts.
-
-Tue Aug 26 01:48:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: test _WIN32 for CRLF platform.  (cygwin defines O_BINARY.)
-
-Tue Aug 26 01:29:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: force CRLF handling if RUBY_TEST_CRLF_ENVIRONMENT is defined.
-	  This is only for testing.
-
-Tue Aug 26 01:26:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode0): disable newline conversion for ASCII
-	  incompatible encoding.
-
-Tue Aug 26 00:55:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode0): don't short cut for newline conversion.
-
-Tue Aug 26 00:36:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fwrite): add TEXTMODE_NEWLINE_ENCODER to option for
-	  rb_str_transcode.
-
-Tue Aug 26 00:24:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): show readagain part for invalid
-	  byte sequence exception.  store the part as an instance variable.
-	  (ecerr_readagain_bytes): new method to access the readagain part.
-
-Tue Aug 26 00:02:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpMult): fix double free.
-
-Mon Aug 25 23:59:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): make last_tc NULL if there are only
-	  additional transcoders.
-	  (econv_description): extracted from rb_econv_open_exc.
-	  (rb_econv_open_exc): use econv_description.
-	  (econv_inspect): use econv_description.
-
-Mon Aug 25 23:56:42 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32.c (init_stdhandle): set binmode.
-
-Mon Aug 25 23:38:17 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb(strftime): %[LN] can print with given
-	  arbitrary precision.
-
-	* lib/date/format.rb(strftime): optional flags and filed width
-	  should also affect %[nt].
-
-Mon Aug 25 23:01:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): default defined? should return
-	  "expression" without evaluating the expression.  [ruby-dev:35967]
-
-Mon Aug 25 22:46:01 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_thread.rb (test_status_and_stop_p): reduce the risk
-	  of race condition.
-
-Mon Aug 25 22:39:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/irb/extend-command.rb (def_extend_command): check number of
-	  arguments.  [ruby-dev:35074]
-
-	* lib/irb/ext/multi-irb.rb (search): check if a corresponding job is
-	  found.  [ruby-dev:35074]
-
-Mon Aug 25 22:29:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_io.rb (test_dup): fix typo.  see [ruby-dev:35958]
-
-Mon Aug 25 22:02:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize
-	  last_error.  num_trans may be zero.
-	  (rb_econv_convert0): num_trans may be zero.
-	  (rb_econv_putbackable): ditto.
-	  (rb_econv_putback): ditto.
-	  (rb_econv_convert): input_ptr and output_ptr may be NULL.
-
-Mon Aug 25 19:05:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): should handle NODE_{AND,OR} as
-	  "expression".  [ruby-dev:35951]
-
-Mon Aug 25 17:36:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_io_ungetbyte): added prototype.
-
-	* io.c (rb_io_gets): use rb_io_getline_1 for unget buffer.
-
-	* ruby.c (load_file): use rb_io_ungetbyte.
-
-	* transcode.c (rb_econv_substr_append): fix for buffer overrun.
-
-	* win32/enc-setup.mak (BUILTIN_TRANSOBJS): added.
-
-Mon Aug 25 14:22:21 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* parse.y (YYSTYPE): struct RVarmap has been no longer
-	  defined.
-	  see also r11717 by matz.
-
-Mon Aug 25 10:42:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (rb_econv_open_exc): constified.
-
-Mon Aug 25 07:10:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/emacs_mule.c: fix ctype.
-
-Mon Aug 25 00:52:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (BUILTIN_TRANSSRCS): defined.
-	  (BUILTIN_TRANSOBJS): defined.
-
-	* enc/Makefile.in (BUILTIN_TRANSES): defined.
-
-	* enc/make_encmake.rb (BUILTIN_TRANSES): defined.
-
-	* enc/depend: don't generate rules for builtin transcoders.
-
-	* common.mk (COMMONOBJS): add BUILTIN_TRANSOBJS.
-	  (enc.mk): pass BUILTIN_TRANSOBJS.
-	  (newline.c): new rule.
-	  (newline.$(OBJEXT)): new rule.
-	  (srcs): newline.c added.
-
-	* Makefile.in (BUILTIN_TRANSSRCS): defined.
-	  (BUILTIN_TRANSOBJS): defined.
-
-	* transcode.c (Init_transcode): call Init_newline.
-
-Mon Aug 25 00:11:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (declare_transcoder): arguments order changed.
-	  (rb_declare_transcoder): call declare_transcoder just once.
-
-Sun Aug 24 19:48:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_t): use rb_econv_option_t.
-
-	* transcode.c: follow the rb_econv_t change.
-
-Sun Aug 24 19:40:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_init_copy): copy encs.
-
-Sun Aug 24 19:17:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_open): add an argument: vperm.
-	  (open_key_args): call rb_io_open with perm.
-
-Sun Aug 24 19:11:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (sym_invalid): removed.
-	  (sym_undef): removed.
-	  (sym_ignore): removed.
-	  (sym_replace): removed.
-
-Sun Aug 24 19:07:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_reopen): initialize fptr->encs.opts.
-
-Sun Aug 24 18:37:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_s_pipe): accept optional hash.
-	  (rb_io_set_encoding): ditto.
-	  (rb_io_extract_modeenc): use rb_econv_opts to initialize
-	  ecopts.
-	  (rb_file_open_generic): ditto.
-	  (rb_file_open_internal): ditto.
-	  (io_encoding_set): new argument: opt.
-	  (argf_set_encoding): copy fptr->encs.opts to argf_ecopts.
-
-	* transcode.c (rb_econv_opts): accept Qnil for initialization.
-
-Sun Aug 24 18:10:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_enc_t): add opts field.
-	  (FMODE_INVALID_MASK): removed.
-	  (FMODE_INVALID_IGNORE): ditto.
-	  (FMODE_INVALID_REPLACE): ditto.
-	  (FMODE_UNDEF_MASK): ditto.
-	  (FMODE_UNDEF_IGNORE): ditto.
-	  (FMODE_UNDEF_REPLACE): ditto.
-	  (MakeOpenFile): initialize the opts field.
-
-	* io.c (make_writeconv): use the opts field.
-	  (io_fwrite): ditto.
-	  (make_readconv): ditto.
-	  (argf_ecopts): new macro.
-	  (rb_io_extract_modeenc): fill the opts field.
-	  (argf_next_argv): ditto.
-	  (rb_file_open_generic): initialize the opts field.
-	  (rb_file_open_internal): ditto.
-	  (io_encoding_set): ditto.
-	  (argf_set_encoding): ditto.
-
-Sun Aug 24 18:02:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (struct argf): use struct rb_io_enc_t.
-	  (argf_enc): follow the struct argf change.
-	  (argf_enc2): ditto.
-
-Sun Aug 24 17:36:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_str_transcode): make 3rd argument
-	  rb_econv_option_t*.
-
-	* transcode.c (transcode_loop): take rb_econv_option_t* as a argument.
-	  (str_transcode0): ditto.
-	  (str_transcode): make rb_econv_option_t and call str_transcode0 with
-	  it.
-	  (rb_str_transcode): take rb_econv_option_t*.
-
-	* io.c (io_fwrite): follow the rb_str_transcode change.
-
-Sun Aug 24 16:47:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): make enc and enc2 as struct
-	  rb_io_enc_t;
-
-	* io.c: follow the structure change.
-	  (convconfig_t): defined by rb_io_enc_t.
-
-Sun Aug 24 16:19:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_opts): declared.
-
-	* transcode.c (rb_econv_opts): defined.
-
-	* io.c (rb_io_extract_modeenc): use rb_econv_opts.
-
-Sun Aug 24 16:06:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_option_t): defined.
-	  (rb_econv_open): 3rd arg changed.
-	  (rb_econv_open_exc): ditto.
-
-	* io.c (make_writeconv): use rb_econv_option_t.
-	  (make_readconv): ditto.
-	  (rb_econv_open): take rb_econv_option_t for options.
-	  (rb_econv_open_exc): ditto.
-	  (transcode_loop): use rb_econv_option_t.
-	  (econv_init): use rb_econv_option_t.
-
-Sun Aug 24 15:43:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_substr_append): associate dst with destination
-	  encoding when dst is created.
-
-Sun Aug 24 15:21:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_str_transcode): add ecflags argument.
-
-	* transcode.c (econv_opts): extracted from str_transcode.
-	  (str_transcode_enc_args): extracted from str_transcode.
-	  (str_transcode0): extracted from str_transcode.
-	  (str_transcode): use econv_opts, str_transcode_enc_args,
-	  str_transcode0.
-	  (rb_str_transcode): call str_transcode0.
-	  (econv_primitive_insert_output): give the additional argument for
-	  rb_str_transcode.
-
-	* io.c (make_writeconv): use invalid/undef flags.
-	  (io_fwrite): ditto.
-	  (rb_scan_open_args): give the additional argument for
-	  rb_str_transcode.
-
-Sun Aug 24 13:27:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (str_transcode): check last hash only if 0 < argc.
-
-Sun Aug 24 12:22:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_substr_append): renamed from
-	  rb_econv_string.
-	  (rb_econv_str_convert): declared.
-	  (rb_econv_substr_convert): declared.
-	  (rb_econv_str_append): declared.
-
-	* io.c (io_fwrite): use rb_econv_str_convert instead of
-	  rb_econv_string.
-
-	* transcode.c (rb_econv_substr_append): renamed from rb_econv_string.
-	  (rb_econv_str_append): new function.
-	  (rb_econv_substr_convert): ditto.
-	  (rb_econv_str_convert): ditto.
-
-Sun Aug 24 12:15:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP#urlencode): str[0] returns char in 1.9.
-	  Patch by Junegunn Choi [ruby-core:18368]
-
-Sun Aug 24 12:02:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): return NULL on error.
-
-Sun Aug 24 11:40:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_open_exc): declared.
-
-	* transcode.c (rb_eNoConverter): new exception.
-	  (rb_econv_open_exc): new function.
-	  (transcode_loop): use rb_econv_open_exc.
-
-	* io.c (make_writeconv): use rb_econv_open_exc.
-	  (make_readconv): ditto.
-
-Sun Aug 24 11:26:54 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::unescapeHTML): consider ISO-8859-1.
-	  [ruby-dev:35936]
-
-Sun Aug 24 10:55:00 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/emacs_mule.c: support Emacs/Mule internal encoding.
-
-Sun Aug 24 08:03:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* strftime.c (daylight, timezone): not provided as dllexport on cygwin,
-	  right now.
-
-Sun Aug 24 06:39:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::unescapeHTML): more encoding sensible unescaping.
-	  [ruby-dev:35936]
-
-Sun Aug 24 04:23:19 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_compatible_p): raise TypeError when argument is Encoding.
-
-Sat Aug 23 23:25:47 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/cgi.rb (CGI#out): remove auto encoding conversion and set
-	  LANGUAGE. [ruby-dev:35922]
-
-Sat Aug 23 20:01:29 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_process.rb (TestProcess#test_rlimit_value):
-	  add Errno::EINVAL. [ruby-dev:35900]
-
-Sat Aug 23 18:29:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_scan_open_args): use pop_last_hash.
-
-Sat Aug 23 16:59:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_INVALID_MASK): defined.
-	  (FMODE_INVALID_IGNORE): defined.
-	  (FMODE_INVALID_REPLACE): defined.
-	  (FMODE_UNDEF_MASK): defined.
-	  (FMODE_UNDEF_IGNORE): defined.
-	  (FMODE_UNDEF_REPLACE): defined.
-
-	* io.c (sym_invalid): defined.
-	  (sym_undef): defined.
-	  (sym_ignore): defined.
-	  (sym_replace): defined.
-	  (make_readconv): specify ECONV_INVALID_* and ECONV_UNDEF_* if
-	  FMODE_INVALID_* and FMODE_UNDEF_* is set.
-	  (rb_io_extract_modeenc): check {:invalid, :undef} => {:replace,
-	  :ignore} for FMODE_INVALID_* and FMODE_UNDEF_*.
-
-Sat Aug 23 17:06:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* strftime.c (rb_strftime): support more flags.
-
-Sat Aug 23 15:14:10 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_opts.h: enable "OPT_TRACE_INSTRUCTION" on default.
-
-Sat Aug 23 14:59:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_INVALID_MASK): defined.
-	  (ECONV_INVALID_IGNORE): defined.
-	  (ECONV_INVALID_REPLACE): defined.
-	  (ECONV_UNDEF_MASK): defined.
-	  (ECONV_UNDEF_IGNORE): defined.
-	  (ECONV_UNDEF_REPLACE): defined.
-
-	* transcode.c (INVALID_IGNORE): removed.
-	  (INVALID_REPLACE): removed.
-	  (UNDEF_IGNORE): removed.
-	  (UNDEF_REPLACE): removed.
-	  (rb_econv_convert0): renamed from rb_econv_convert.
-	  (rb_econv_convert): defined to call rb_econv_convert0 with
-	  replace/ignore behavior moved from transcode_loop.
-	  (transcode_loop): replace/ignore behavior removed.
-
-Sat Aug 23 11:23:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_extract_modeenc): check :textmode and :binmode in option
-	  hash.
-
-Sat Aug 23 10:48:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pty/pty.c (pty_getpty): follow rb_io_t's path -> pathv change.
-
-Sat Aug 23 10:42:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (check_pipe_command): extracted from rb_f_open and rb_io_open.
-	  (rb_f_open): use check_pipe_command.
-	  (rb_io_open): ditto.
-
-Sat Aug 23 10:13:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (read_all): fptr->enc2 is 0 if no conversion.
-	  (rb_io_getline_fast): ditto.
-	  (io_getc): ditto.
-
-Sat Aug 23 09:45:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): remove path field and add pathv field.
-	  (MakeOpenFile): initialize pathv as Qnil.
-
-	* gc.c: mark pathv field in T_FILE.
-
-	* io.c: follow the rb_io_t field change.
-
-	* file.c: ditto.
-
-	* ext/socket/socket.c: ditto.
-
-Sat Aug 23 01:42:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_TEXTMODE): defined.
-
-	* include/ruby/encoding.h (rb_econv_t): new field: flags.
-	  (rb_econv_binmode): declared.
-
-	* io.c (io_unread): text mode hack removed.
-	  (NEED_NEWLINE_DECODER): defined.
-	  (NEED_NEWLINE_ENCODER): defined.
-	  (NEED_READCONV): defined.
-	  (NEED_WRITECONV): defined.
-	  (TEXTMODE_NEWLINE_ENCODER): defined for windows.
-	  (make_writeconv): setup converter with TEXTMODE_NEWLINE_ENCODER for
-	  text mode.
-	  (io_fwrite): use NEED_WRITECONV.  character code conversion is
-	  disabled if fptr->writeconv_stateless is nil.
-	  (make_readconv): setup converter with
-	  ECONV_UNIVERSAL_NEWLINE_DECODER for text mode.
-	  (read_all): use NEED_READCONV.
-	  (appendline): use NEED_READCONV.
-	  (rb_io_getline_1): use NEED_READCONV.
-	  (io_getc): use NEED_READCONV.
-	  (rb_io_ungetc): use NEED_READCONV.
-	  (rb_io_binmode): OS-level text mode test removed.  call
-	  rb_econv_binmode.
-	  (rb_io_binmode_m): call rb_io_binmode_m with write_io as well.
-	  (rb_io_flags_mode): return mode string including "t".
-	  (rb_io_mode_flags): detect "t" for text mode.
-	  (rb_sysopen): always specify O_BINARY.
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize flags.
-	  (rb_econv_open): if source and destination encoding is
-	  both empty string, open newline converter.  last_tc will be NULL in
-	  this case.
-	  (rb_econv_encoding_to_insert_output): last_tc may be NULL now.
-	  (rb_econv_string): ditto.
-	  (output_replacement_character): ditto.
-	  (transcode_loop): ditto.
-	  (econv_init): ditto.
-	  (econv_inspect): ditto.
-	  (rb_econv_binmode): new function.
-
-Fri Aug 22 21:18:40 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_div): now behaves as quo.
-
-	* complex.c (nucomp_s_generic_p): has been removed.
-
-	* complex.c (nucomp_to_s): adopts new form.
-
-	* complex.c (nucomp_inspect): ditto.
-
-	* complex.c (string_to_c_internal): ditto and supports polar form.
-
-	* complex.c (rb_complex_polar): new.
-
-	* rational.c (nurat_to_s): do not canonicalize.
-
-	* rational.c (nurat_inspect): adopts new form.
-
-	* rational.c (string_to_r_internal): ditto.
-
-	* include/ruby/intern.h: added a declaration.
-
-	* lib/complex.rb: added an obsolete class method.
-
-	* lib/cmath.rb: use scalar? instead of generic?.
-
-Fri Aug 22 20:06:46 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#shutdown):
-	  rescue Errno::ENOTCONN and close. [ruby-dev:35896]
-
-	* test/openssl/test_ssl.rb (OpenSSL#start_server): ditto.
-	  [ruby-dev:35897]
-
-	* lib/net/imap.rb (Net::IMAP#disconnect): ditto. [ruby-dev:35898]
-
-Fri Aug 22 19:58:27 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: no need to require the "lib/rational.rb" any more.
-
-Fri Aug 22 15:47:38 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/cgi.rb: use bytesize instead of size/length.
-
-Fri Aug 22 14:28:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* strftime.c (rb_strftime): supported flags and precision for most
-	  conversions.  [ruby-dev:35906]
-
-Fri Aug 22 14:04:04 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: test_shift_jis:
-	  fixed comment strings (see r18291)
-
-Fri Aug 22 12:41:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_pid): use PIDT2NUM.
-
-Fri Aug 22 11:36:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (dir_enc_str_new): set US-ASCII to the path
-	  when the path is 7bit string and encoding is ASCII compatible.
-
-	* dir.c (push_glob): set file system encoding when argument encoding
-	  is US-ASCII.
-
-Fri Aug 22 11:30:38 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (dir_enc_str_new): renamed from dir_enc_str.
-
-	* dir.c (dir_read): use dir_enc_str_new.
-
-	* dir.c (dir_each): ditto.
-
-	* dir.c (push_pattern): ditto.
-
-Fri Aug 22 11:29:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: remove config.h dependency.
-
-Fri Aug 22 10:52:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (gmtime_r): check if reentrant versions are available.
-
-	* time.c (IF_HAVE_GMTIME_R, ASCTIME, GMTIME, LOCALTIME): use reentrant
-	  versions if available.
-
-Fri Aug 22 05:29:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (INT2NUM): just use a simple macro on LP64.
-	  (UINT2NUM): ditto.
-
-Fri Aug 22 05:10:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_file_open_generic): take filename as a VALUE.
-	  (rb_file_open_internal): ditto.
-	  (rb_io_open): ditto.
-	  (rb_file_open): pass filename as a VALUE to rb_file_open_internal.
-	  (rb_open_file): pass filename as a VALUE to rb_file_open_generic.
-	  (open_key_args): pass filename as a VALUE to rb_io_open.
-
-Fri Aug 22 04:33:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h: fix previous change for LP64.
-
-Fri Aug 22 03:19:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (NUM2LONG): make it inline function to evaluate
-	  the argument only once.
-	  `t = Object.new; def t.*(x) p x; 0 end; p Time.at(0, t)' did print x
-	  twice.
-	  (NUM2INT): ditto.
-	  (NUM2LL): ditto.
-	  (INT2NUM): make it inline function.
-	  (LONG2NUM): ditto.
-	  (UINT2NUM): ditto.
-	  (ULONG2NUM): ditto.
-
-Fri Aug 22 03:03:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_s_sysopen): mode can be a Bignum.
-
-Fri Aug 22 02:57:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_extract_modeenc): notify coerced to caller.
-	  (rb_io_initialize): mode may be a Bignum.
-
-Fri Aug 22 02:42:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_extract_modeenc): use rb_check_to_integer to test
-	  integer.
-
-Fri Aug 22 02:25:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* iseq.c (iseq_inspect): don't raise on uninitialized object.
-	  show real class name.
-
-Fri Aug 22 02:08:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_initialize): accept hash argument.
-
-Thu Aug 21 23:51:51 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): supported %F and %<precision>N.
-	  reverted config.h to ruby.h for Windows.
-
-	* test/ruby/test_time.rb (TestTime::test_strftime): added tests
-	  for %F and %N.
-
-	* time.c: documented %F and %N.
-
-Thu Aug 21 20:23:26 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb#test_str_crypt): add
-	  key and salt to error message.
-
-Thu Aug 21 19:20:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (rb_stat_inspect): don't raise if self is not initialized.
-
-Thu Aug 21 19:17:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (pst_pid): use rb_attr_get to avoid warning on
-	  Process::Status.allocate.pid.
-	  (pst_inspect): don't raise if self is not initialized.
-
-Thu Aug 21 19:05:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_extract_encoding_option): if internal encoding is not
-	  specified, enc is external encoding.
-
-Thu Aug 21 14:22:50 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c: include ruby/config.h instead of ruby/ruby.h.
-
-	* common.mk: removed the old rule for missing/strftime.c.
-
-Thu Aug 21 09:29:01 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c (rb_strftime): return "UTC" instead of "GMT".
-
-	* test/ruby/test_time.rb (test_strftime): ditto.
-
-Thu Aug 21 07:59:04 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/iconv/test_option.rb (test_ignore_option): skip if iconv
-	  doesn't have transliterate.
-
-	* test/iconv/test_option.rb (test_translit_option): ditto.
-
-Thu Aug 21 06:12:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/scanf.rb (Scanf::FormatSpecifier#initialize): %i should accept
-	  single digit decimal.  [ruby-core:18355]
-
-Thu Aug 21 06:02:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_initialize_copy): Range is now a Struct.
-	  [ruby-core:18353]
-
-	* struct.c (rb_struct_init_copy): made public.
-
-Thu Aug 21 03:09:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_extract_encoding_option): enc2 is external encoding if
-	  external encoding and internal encoding is given.
-	  (pipe_open): add flags and convconfig argument to initialize
-	  fptr->{mode,enc,enc2}.
-	  (pipe_open_v): pass flags and convconfig from caller to pipe_open.
-	  (pipe_open_s): ditto.
-	  (pop_last_hash): new function.
-	  (rb_io_s_popen): use last hash as option to specify code conversion.
-	  (rb_io_open): specify flags and convconfig arguments for
-	  pipe_open_s.
-	  (rb_f_backquote): ditto.
-
-Thu Aug 21 02:27:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (prep_io): local variable renamed.
-	  (rb_io_fdopen): ditto.
-	  (prep_stdio): ditto.
-
-Thu Aug 21 01:58:59 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* configure.in: always check timezone().
-
-	* strftime.c (rb_strftime): prefer timezone/altzone rather than
-	  gettimeofday().  The second argument to gettimeofday() is ignored
-	  on Solaris.
-
-Thu Aug 21 02:03:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (open_key_args): simplified.
-
-Thu Aug 21 01:57:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (open_key_args): IO.foreach(path, rs, limit) didn't work.
-
-Thu Aug 21 01:31:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_file_sysopen_internal): unused function removed.
-	  (rb_file_sysopen): ditto.
-
-Thu Aug 21 01:09:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: use mode_t for the 3rd argument, permission, of open(2).
-
-Thu Aug 21 00:51:42 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* configure.in: removed strftime from AC_REPLACE_FUNCS().
-
-	* include/ruby/missing.h: removed prototype for strftime().
-
-	* missing/strftime.c: removed.
-
-	* time.c (time_to_s): use rb_strftime() instead of strftime(3).
-	  (time_zone): ditto.
-
-Thu Aug 21 00:49:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* strftime.c: win32 support.
-
-Thu Aug 21 00:20:05 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* strftime.c: new file.
-
-	* common.mk (COMMONOBJS): added strftime.$(OBJEXT).
-
-	* time.c (time_strftime): do not use strftime(3).  supported
-	  %L(millisecond) and %N(nanosecond).
-
-	* test/ruby/test_time.rb: added tests for %L and %N.
-
-Wed Aug 20 23:53:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_set_encoding): removed.
-	  (rb_io_open): set up encoding using new argument opt.
-	  (open_key_args): call rb_io_open with opt.  don't call
-	  io_set_encoding.
-
-Wed Aug 20 22:30:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_file_open_internal): use rb_io_flags_modenum.
-	  (rb_io_reopen): use rb_io_flags_modenum and rb_io_modenum_mode.
-	  (rb_io_stdio_file): ditto.
-
-Wed Aug 20 22:28:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (proc_new): use the given class.
-
-	* vm.c (vm_make_proc): added an argument for the class.
-
-Wed Aug 20 22:24:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_take): get rid of extraneous iteration.
-
-Wed Aug 20 20:32:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_open_with_args): use rb_open_file instead of rb_io_open.
-
-Wed Aug 20 20:16:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_scan_open_args): extracted from rb_open_file.
-
-Wed Aug 20 19:22:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (convconfig_t): new type.
-	  (rb_io_extract_modeenc): new function.
-	  (rb_file_open_generic): new function.
-	  (rb_file_open_internal): use rb_file_open_generic.
-	  (rb_file_sysopen_internal): use rb_file_open_generic.
-	  (rb_open_file): use rb_io_extract_modeenc and rb_file_open_generic.
-	  (rb_io_open): call rb_file_open_internal instead of rb_file_open.
-
-Wed Aug 20 19:15:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (Init_IO): new constants: File::DSYNC, File::RSYNC and
-	  File::NOFOLLOW.
-
-Wed Aug 20 18:41:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_open_file): don't lookup :mode and :perm in opt.  it is
-	  useless because vmode and perm is overwritten by rb_scan_args
-	  anyway.
-
-Wed Aug 20 18:37:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (open_key_args): meaningless MEMCPY removed.
-
-Wed Aug 20 18:30:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (prep_io) [cygwin]: use FMODE_BINMODE instead of O_BINARY.
-
-Wed Aug 20 16:39:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sample): performance improvement for huge array.
-
-Wed Aug 20 12:28:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sample): get rid of infinite loop.  #455
-
-Wed Aug 20 06:09:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_TRUNC): value changed because 0x100 is used
-	  as FMODE_NOREVLOOKUP in socket.c
-
-Wed Aug 20 05:19:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (parse_mode_enc): extracted from mode_enc.
-	  (io_extract_encoding_option): extracted from io_set_encoding.
-
-Wed Aug 20 04:17:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_flags_modenum): make it static.
-
-Wed Aug 20 03:36:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_TRUNC): new constant.
-
-	* io.c (rb_io_mode_flags): set FMODE_TRUNC for "w".
-	  (rb_io_modenum_flags): set FMODE_TRUNC for O_TRUNC.
-	  (rb_io_flags_modenum): new function.
-	  (rb_io_mode_modenum): just use rb_io_mode_flags and
-	  rb_io_flags_modenum.
-
-Wed Aug 20 02:36:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fopen): macro for vms removed.  fopen is not used now.
-
-Wed Aug 20 02:27:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open): fix memory leak.
-	  (rb_econv_close): ditto.
-	  fixed by shinichiro.h.  [ruby-dev:35880]
-
-Tue Aug 19 21:50:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_fopen): declaration removed.
-
-	* io.c (rb_fopen): unused function removed.
-
-Tue Aug 19 21:14:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_READWRITE): define as
-	  FMODE_READABLE|FMODE_WRITABLE.
-
-Tue Aug 19 21:13:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_flags_mode): use hexadecimal in error message.
-	  (rb_io_modenum_mode): ditto.
-	  (rb_io_initialize): ditto.
-
-Tue Aug 19 18:23:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_flags_mode): add a prefix 0 to octal in error message.
-	  (rb_io_modenum_mode): ditto.
-
-Tue Aug 19 18:05:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (FMODE_*): sorted and describe the values in
-	  hexadecimal.
-
-Tue Aug 19 17:32:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/ossl_x509name.c (ossl_x509name_initialize): store the
-	  result of d2i_X509_NAME into DATA_PTR(self).
-
-Tue Aug 19 04:54:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rake.rb (FileUtils#ruby): takes care of space containing path.
-	  [ ruby-Bugs-21591 ]
-
-Tue Aug 19 01:32:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_open_file): encoding in mode string was ignored if perm is
-	  specified.
-
-Tue Aug 19 01:02:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_open_file): don't access argv[-1] by
-	  File.allocate.instance_eval { initialize }.
-
-Tue Aug 19 00:56:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_inspect): don't raise for uninitialized Regexp.
-
-Tue Aug 19 00:34:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_check_readable): side effect for STDIN removed.
-	  (rb_io_external_encoding): ditto.
-
-Mon Aug 18 23:27:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_ungetbyte): renamed from io_ungetc.
-	  (rb_io_ungetbyte): new method.
-	  (rb_io_ungetc): push back into character buffer if enc2 is set.
-
-Mon Aug 18 22:41:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (id_encode): removed.
-
-Mon Aug 18 22:30:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (make_writeconv): if enc and enc2 is set, convert
-	  string.encoding to enc2.
-
-	* include/ruby/io.h: comment changed.
-
-Mon Aug 18 21:02:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): new fields: writeconv,
-	  writeconv_stateless and writeconv_initialized.
-	  (MakeOpenFile): initialize them.
-
-	* include/ruby/encoding.h (rb_econv_stateless_encoding): declared.
-	  (rb_econv_string): declared.
-
-	* io.c (make_writeconv): new function.
-	  (io_fwrite): use econv.
-	  (make_readconv): fix error message.
-	  (finish_writeconv): new function.
-	  (fptr_finalize): call finish_writeconv.
-	  (clear_writeconv): new function.
-	  (clear_codeconv): new function to call both clear_readconv and
-	  clear_writeconv.
-	  (rb_io_fptr_finalize): call clear_codeconv instead of
-	  clear_readconv.
-	  (mode_enc): ditto.
-	  (io_set_encoding): ditto.
-	  (argf_next_argv): ditto.
-	  (io_encoding_set): ditto.
-
-	* gc.c (gc_mark_children): mark writeconv_stateless in T_FILE.
-
-	* transcode.c (stateless_encoding_i): new function.
-	  (rb_econv_stateless_encoding): ditto.
-	  (rb_econv_string): ditto.
-
-Mon Aug 18 17:23:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (clear_readconv): extracted from rb_io_fptr_finalize.
-	  (mode_enc): call clear_readconv.
-	  (io_set_encoding): ditto.
-	  (argf_next_argv): ditto.
-	  (io_encoding_set): ditto.
-
-Mon Aug 18 16:54:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (mode_enc): modify enc and enc2 consistently.
-	  (io_set_encoding): ditto.
-	  (io_encoding_set): ditto.
-
-Mon Aug 18 13:21:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_search_path): prevent infinite loop by
-	  searching a path for self conversion.
-
-Mon Aug 18 12:45:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_enc_str): code conversion removed.
-	  (io_enc_str_converted): removed because it is identical to
-	  io_enc_str now.
-
-Mon Aug 18 12:12:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_shift_crbuf): add strp argument to append into existing
-	  string.
-	  (read_all): use econv if enc2 is set.
-	  (io_getc): follow the io_shift_crbuf change.
-
-Mon Aug 18 10:35:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_enc_str_converted): new function.
-	  (make_readconv): extracted from io_getc.
-	  (more_char): ditto.
-	  (appendline): use econv via make_readconv and more_char for code
-	  conversion.
-	  (prepare_getline_args): don't convert record separator.
-	  (rb_io_getline_1): don't use rb_io_getline_fast if enc2 is set.
-	  (io_getc): use make_readconv and more_char.
-
-Mon Aug 18 08:27:44 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* common.mk: fix error in uncommon.mk.
-
-Mon Aug 18 06:10:08 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: config.h depends config.status.
-
-Mon Aug 18 03:59:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (appendline): appendline cannot check character boundary.
-	  (rb_io_getline_1): relax limit until character boundary.
-
-Mon Aug 18 02:25:11 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/cgi.rb (WEBrick::CGI::Socket#eof?): added lacked method.
-
-Sun Aug 17 21:50:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (prepare_getline_args): io.gets(10,nil) should cause TypeError.
-
-Sun Aug 17 15:58:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: not check config.h.
-
-	* lib/mkmf.rb (init_mkmf): add include/ruby/backward to $INCFLAGS.
-
-	* include/ruby/backward/{st,util}.h: added for backward compatibility.
-	  [ruby-dev:35811]
-
-Sun Aug 17 13:40:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_putback): new method.
-
-Sun Aug 17 13:23:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_putbackable): declared.
-	  (rb_econv_putback): ditto.
-
-	* transcode.c (rb_econv_putbackable): implemented.
-	  (rb_econv_putback): ditto.
-
-	* io.c (io_getc): put back bytes if possible.
-
-Sun Aug 17 12:00:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (make_econv_exception): add several instance variables
-	  to exception object.
-	  (ecerr_source_encoding): new method:
-	  Encoding::ConversionUndefined#source_encoding and
-	  Encoding::InvalidByteSequence#source_encoding.
-	  (ecerr_destination_encoding): new method:
-	  Encoding::ConversionUndefined#destination_encoding and
-	  Encoding::InvalidByteSequence#destination_encoding.
-	  (econverr_error_char): new method:
-	  Encoding::ConversionUndefined#error_char.
-	  (econverr_error_bytes): new method:
-	  Encoding::ConversionUndefined#error_bytes.
-
-Sun Aug 17 11:43:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* random.c (struct MT): packed Mersenne Twister staffs.
-
-	* random.c (struct RandSeed): packed random seed staffs.
-
-Sun Aug 17 08:38:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/iconv/test_option.rb (test_ignore_option): skip if iconv
-	  doesn't have transliterate.
-
-	* test/iconv/test_option.rb (test_translit_option): ditto.
-
-Sun Aug 17 01:29:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): new fields: readconv, crbuf, crbuf_off,
-	  crbuf_len, crbuf_capa.
-	  (MakeOpenFile): initialize them.
-
-	* io.c (io_shift_crbuf): new function.
-	  (io_getc): use econv.
-	  (rb_io_fptr_finalize): finalize readconv and crbuf.
-
-Sun Aug 17 00:02:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_check_error): declared.
-
-	* transcode.c (make_econv_exception): new function.
-	  (transcode_loop): use make_econv_exception.
-	  (rb_econv_check_error): defined.
-
-Sat Aug 16 15:23:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_elem_t): fields removed: from and
-	  to.
-	  (rb_econv_t): new fields: source_encoding_name and
-	  destination_encoding_name.
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize the
-	  new fields.
-	  (rb_econv_open): set up the new fields.
-	  (econv_inspect): use the new fields.
-
-Sat Aug 16 14:22:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_t): add fields: in_buf_start,
-	  in_data_start, in_data_end, in_buf_end and last_trans_index.
-	  (rb_econv_output): removed.
-	  (rb_econv_insert_output): declared.
-	  (rb_econv_encoding_to_insert_output): declared.
-
-	* enc/trans/newline.trans (rb_universal_newline): stateful_type
-	  changed.
-
-	* transcode.c (transcode_restartable0): initialize inchar_start,
-	  tc->recognized_len and next_table at beginning of the loop.
-	  (rb_econv_open_by_transcoder_entries): initialize new fields.
-	  (rb_econv_open): setup last_trans_index.
-	  (trans_sweep): last out_buf_start can be non-NULL now.
-	  (rb_econv_convert): check last out_buf_start and in_buf_start at
-	  first.
-	  (rb_econv_output_with_destination_encoding): removed.
-	  (econv_just_convert): removed.
-	  (rb_econv_output): removed.
-	  (econv_primitive_output): method removed.
-	  (rb_econv_encoding_to_insert_output): new function.
-	  (allocate_converted_string): new function.
-	  (rb_econv_insert_output): new function.
-	  (econv_primitive_insert_output): new method.
-	  (output_replacement_character): use rb_econv_insert_output.  unused
-	  arguments removed.
-
-Sat Aug 16 09:20:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_intern_const): tiny optimization.
-
-	* include/ruby/ruby.h (SSIZET2NUM, NUM2SSIZET, SSIZE_MAX, SSIZE_MIN):
-	  macros for ssize_t.
-
-Sat Aug 16 08:11:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder_stateful_type_t): defined.
-	  (rb_transcoder): add field: stateful_type.
-
-	* tool/transcode-tblgen.rb: generate stateful_type field as
-	  stateless_converter.
-
-	* enc/trans/iso2022.trans: follow rb_transcoder change.
-
-	* enc/trans/newline.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-Fri Aug 15 23:07:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_just_convert): extracted from rb_econv_output.
-	  (rb_econv_output): use econv_just_convert.
-	  (econv_primitive_output): new method.
-
-Fri Aug 15 19:57:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_output): add str_encoding
-	  argument.
-
-	* transcode.c (get_replacement_character): add repl_enc_ptr argument.
-	  (rb_econv_output_with_destination_encoding): renamed from
-	  rb_econv_output and make it static.
-	  (rb_econv_output): convert str and call
-	  rb_econv_output_with_destination_encoding.
-	  (output_replacement_character): follow above interface change.
-
-Fri Aug 15 19:33:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_drop_bytes): use memmove.
-
-Fri Aug 15 18:33:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_t): add error_tc in last_error.
-
-	* transcode.c (rb_econv_convert): fill error_tc.
-
-Fri Aug 15 18:10:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_t): new field: last_error.
-
-	* transcode.c (rb_trans_conv): new argument: result_position_ptr.
-	  (rb_econv_convert): fill last_error.
-	  (econv_result_to_symbol): extracted from econv_primitive_convert.
-	  (econv_primitive_errinfo): new method.
-
-Fri Aug 15 17:39:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.{c,h}): creates in the dependency order.
-
-Fri Aug 15 16:59:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (exec_event_hooks): skips RubyVM::FrozenCore.
-
-	* vm.c (Init_VM): get rid of SEGV in a trace proc.
-
-Fri Aug 15 09:33:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (conv_init): check empty name.
-
-Fri Aug 15 09:03:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_init): don't create dummy encoding if
-	  rb_econv_open is failed.
-	  (make_dummy_encoding): new function extracted from make_encoding.
-	  (make_encoding): removed.
-
-Fri Aug 15 01:07:16 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk ({$(srcdir)}.y.c): escape backslash.
-
-Fri Aug 15 01:05:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): set destination_buffer
-	  encoding.
-
-Fri Aug 15 00:52:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_output): declared.
-
-	* transcode_data.h (rb_transcoder): add resetsize_func field.
-
-	* enc/trans/iso2022.trans (iso2022jp_reset_sequence_size): defined.
-	  (rb_EUC_JP_to_ISO_2022_JP): provide resetsize_func.
-
-	* tool/transcode-tblgen.rb: set NULL for resetsize_func.
-
-	* transcode.c (rb_econv_output): new function for inserting output.
-	  (output_replacement_character): use rb_econv_output.
-	  (transcode_loop): check return value of
-	  output_replacement_character.
-
-Thu Aug 14 23:47:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ECONV_UNIVERSAL_NEWLINE_DECODER): defined.
-	  (ECONV_CRLF_NEWLINE_ENCODER): ditto.
-	  (ECONV_CR_NEWLINE_ENCODER): ditto.
-	  (ECONV_PARTIAL_INPUT): ditto.
-	  (ECONV_OUTPUT_FOLLOWED_BY_INPUT): ditto.
-
-	* transcode.c: use ECONV_* defined as above.
-
-Thu Aug 14 23:35:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c: local variable renamed.
-
-Thu Aug 14 23:22:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_econv_result_t): moved from
-	  transcode_data.h.
-	  (rb_econv_elem_t): ditto.
-	  (rb_econv_t): ditto.  source_encoding and destination_encoding field
-	  is added.
-	  (rb_econv_open): declared.
-	  (rb_econv_convert): ditto.
-	  (rb_econv_close): ditto.
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): initialize
-	  source_encoding and destination_encoding field as NULL.
-	  (rb_econv_open): make it external linkage.
-	  (rb_econv_close): ditto.
-	  (rb_econv_convert): ditto.  renamed from rb_econv_conv.
-	  (make_encoding): new function.
-	  (econv_init): use make_encoding and store rb_encoding* in
-	  rb_econv_t.
-	  (econv_source_encoding): new method
-	  Encoding::Converter#source_encoding.
-	  (econv_destination_encoding): new method
-	  Encoding::Converter#destination_encoding.
-
-Thu Aug 14 22:44:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_econv_result_t): change enumeration
-	  constant's prefix: transcode_ to econv_.
-
-	* transcode.c: follow the constant prefix change.
-
-Thu Aug 14 21:34:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_init): accept Encoding object as source_encoding
-	  and destination_encoding.
-
-Thu Aug 14 21:10:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_filesystem_encoding): use default external encoding
-	  for Unix.
-
-	* dir.c (dir_initialize): don't cache fs_encoding.
-
-Thu Aug 14 20:58:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_open_by_transcoder_entries): renamed from
-	  rb_trans_open_by_transcoder_entries.
-
-Thu Aug 14 20:56:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_max_output): removed.
-
-Thu Aug 14 20:52:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: check unexpected actions.
-
-Thu Aug 14 20:25:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (transcode_invalid_byte_sequence): renamed from
-	  transcode_invalid_input.
-	  (transcode_destination_buffer_full): renamed from transcode_obuf_full.
-	  (transcode_source_buffer_empty): renamed from transcode_ibuf_empty.
-	  (rb_econv_result_t): renamed from rb_trans_result_t.
-	  (rb_econv_elem_t): renamed from rb_trans_elem_t.
-	  (rb_econv_t): renamed from rb_trans_t.
-
-	* transcode.c (UNIVERSAL_NEWLINE_DECODER): renamed from
-	  UNIVERSAL_NEWLINE.
-	  (CRLF_NEWLINE_ENCODER): renamed from CRLF_NEWLINE.
-	  (CR_NEWLINE_ENCODER): renamed from CR_NEWLINE.
-	  (rb_econv_open): renamed from rb_trans_open.
-	  (rb_econv_close): renamed from rb_trans_close.
-
-Thu Aug 14 19:41:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (load_transcoder): unused function removed.
-	  (rb_transcoding_open): ditto.
-
-Thu Aug 14 17:57:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_ispunct): added.
-
-	* common.mk (COMMONOBJS), inits.c (rb_call_inits): id.c is now
-	  included from parse.c.
-
-	* id.c (Init_id), id.h (ruby_method_ids): added IDs used by VM.
-
-	* parse.y (global_symbols): added rooms for VM IDs.
-
-	* parse.y (rb_intern3, rb_id2str): single punctuation symbol is now
-	  same as char code.
-
-Thu Aug 14 17:46:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (union tmpyystype): no longer needed, since YYSTYPE is
-	  defined in parse.h now.
-
-Thu Aug 14 17:27:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* version.c (Init_version): add RUBY_ENGINE constant.
-
-Thu Aug 14 15:34:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_econv_conv): new function.  it doesn't consume
-	  input too much, even for multilevel conversion.
-	  (transcode_loop): use rb_econv_conv.
-	  (econv_primitive_convert): ditto.
-
-Thu Aug 14 15:27:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/defines.h (RUBY_ALIAS_FUNCTION): fallback definition.
-
-Thu Aug 14 15:08:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_trans_result_t): new enumeration constant:
-	  transcode_output_followed_by_input.
-
-	* transcode.c (OUTPUT_FOLLOWED_BY_INPUT): new flag.
-	  (transcode_restartable0): suspend when output followed by input if
-	  OUTPUT_FOLLOWED_BY_INPUT is specified.
-	  (trans_sweep): check OUTPUT_FOLLOWED_BY_INPUT.
-	  (rb_trans_conv): support OUTPUT_FOLLOWED_BY_INPUT.
-	  (econv_primitive_convert): return :output_followed_by_input for
-	  transcode_output_followed_by_input.
-
-Thu Aug 14 14:57:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (getrusage_time): should return the value.
-
-	* thread.c (rb_thread_priority_set): get rid of C99 feature.
-
-	* transcode.c (transcode_search_path): ditto.
-
-	* vm.c (REWIND_CFP): get rid of statement expressions.
-
-Thu Aug 14 14:13:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (Init_VM): hide FrozenCore.
-
-Thu Aug 14 12:20:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (load_transcoder): suppress warning.
-
-	* missing/vsnprintf.c (BSD_vfprintf): ditto.
-
-Thu Aug 14 12:01:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (gnumake): check for GNU make.
-
-	* Makefile.in (uncommon.mk): includes filtered common.mk.
-
-	* common.mk (parse.h): workaround for nmake.
-
-Thu Aug 14 06:09:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_execute_interrupts): switch event
-	  should be occur only once.
-
-Thu Aug 14 05:36:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: parse.h depends on parse.c.
-
-	* common.mk: hash.o depends on $(ID_H_INCLUDES).
-
-Thu Aug 14 02:45:16 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_file_exhaustive.rb (TestFileExhaustive#setup):
-	  set group of tmpdir.  [ruby-dev:35633]
-
-Thu Aug 14 15:50:30 2008  Giuseppe Bilotta  <giuseppe.bilotta@gmail.com>
-
-	* hash.c (set_default): fix rdoc.  #441
-
-Thu Aug 14 02:23:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): add output_byteoffset
-	  argument.
-
-Thu Aug 14 00:43:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_gcc_function_alias): checks alias attribute.
-
-	* string.c (alias_func): replaced with RUBY_ALIAS_FUNCTION.
-
-Wed Aug 13 23:42:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.h): fake rule.
-
-Wed Aug 13 23:15:58 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/ruby/test_thread.rb (test_list): call Thread.pass to run t1.
-	  fixed [ruby-core:18264].
-
-Wed Aug 13 23:05:51 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* string.c (alias_func): changed to 'weak, alias' from 'alias' for
-	  Mac OSX. (closes #429)
-
-Wed Aug 13 19:40:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c: count only freed object as freelist size.
-
-Wed Aug 13 18:34:22 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* marshal.c (marshal_load): set arg.untrust properly.
-
-Wed Aug 13 17:47:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_inspect): new method.
-
-Wed Aug 13 17:35:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_restartable0): several local variables
-	  removed.
-
-Wed Aug 13 17:35:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_set_default_proc): add new method.  a patch from
-	  Giuseppe Bilotta.  #419
-
-Wed Aug 13 17:31:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_insnhelper.c (caller_setup_args): should ensure if the value
-	  from to_proc is a real Proc.
-
-Wed Aug 13 17:28:29 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* common.mk: regint.h no longer includes vm_core.h.
-
-Wed Aug 13 17:26:44 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): add fields: writebuf_off,
-	  writebuf_len and writebuf.
-	  (TRANSCODING_WRITEBUF): new macro.
-
-	* transcode.c (transcode_restartable0): output until output buffer is
-	  really full.
-	  (rb_transcoding_open_by_transcoder): initialize writebuf_len,
-	  writebuf_off and writebuf.
-	  (rb_transcoding_close): finalize writebuf.
-
-Wed Aug 13 17:18:37 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_check_ints): added.  please note that
-	  this function may cause ruby's thread switching.
-
-	* include/ruby/intern.h: ditto.
-
-	* regint.h: use rb_thread_check_ints() instead of
-	  RUBY_CHECK_INTS() directly.
-
-Wed Aug 13 17:01:36 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* golf_prelude.rb, lib/set.rb (TC_Set#test_each),
-	  test/readline/test_readline_history.rb (Readline#test_each__enumerator),
-	  test/ruby/test_array.rb (TestArray#test_collect),
-	  test/ruby/test_enumerator.rb (TestEnumerator#test_initialize):
-	  Enumerable::Enumerator is now called Enumerator.
-
-	* lib/rinda/tuplespace.rb (Rinda::TupleBag#initialize): Use
-	  enum_for instead of hardcoding Enumerable::Enumerator.
-
-Wed Aug 13 16:40:57 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c, vm_core.h: add manual priority support
-	  using time slice.  if you enable USE_NATIVE_THREAD_PRIORITY
-	  macro, this mechanism is ignored.  [ruby-dev:33124]
-
-	* thread_pthread.c, thread_win32.c: ditto.
-
-	* test/ruby/test_thread.rb: fix test parameter.
-
-Wed Aug 13 16:02:14 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* object.c (rb_obj_untrusted): new method Object#untrusted?.
-	  (rb_obj_untrust): new method Object#untrust.
-	  (rb_obj_trust): new method Object#trust.
-
-	* array.c, debug.c, time.c, include/ruby/ruby.h, re.c, variable.c,
-	  string.c, io.c, dir.c, vm_method.c, struct.c, class.c, hash.c,
-	  ruby.c, marshal.c: fixes for Object#untrusted?.
-
-	* test/ruby/test_module.rb, test/ruby/test_array.rb,
-	  test/ruby/test_object.rb, test/ruby/test_string.rb,
-	  test/ruby/test_marshal.rb, test/ruby/test_hash.rb: added tests for
-	  Object#untrusted?.
-
-Wed Aug 13 16:13:58 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_m17n.rb: follow EncodingCompatibilityError.
-
-	* test/ruby/test_mixed_unicode_escapes.rb: ditto.
-
-	* test/ruby/enc/test_utf16.rb: ditto.
-
-Wed Aug 13 16:05:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_cmp): retry with right hand operand if its not a
-	  time object.  [ruby-dev:35011]
-
-Wed Aug 13 15:51:22 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* string.c: Apply a temporary fix to fix build on OS X.  A real
-	  fix will follow later.
-
-Wed Aug 13 15:25:09 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (Init_Enumerator): Rename Enumerable::Enumerator to
-	  just Enumerator.
-
-Wed Aug 13 15:13:57 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* common.mk (prelude.c, golf_prelude.c): Using $(COMPILE_PRELUDE)
-	  requires $(RBCONFIG).
-
-Wed Aug 13 15:08:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_init): make flags argument optional.
-	  (econv_primitive_convert): ditto.
-
-Wed Aug 13 14:55:27 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* common.mk (realclean-local): Remove parse.h as well.
-
-	* common.mk: Add missing dependencies regarding vm_core.h, id.h,
-	  parse.c (parse.h), etc..
-
-Wed Aug 13 14:45:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans (rb_crlf_newline): new transcoder.
-	  (rb_cr_newline): new transcoder.
-
-	* transcode.c (trans_open_i): one more extra room for input newline
-	  converter.
-	  (rb_trans_open): crlf newline and cr newline implemented.
-	  (Init_transcode): Encoding::Converter::CRLF_NEWLINE and
-	  Encoding::Converter::CR_NEWLINE defined.
-
-Wed Aug 13 14:22:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/newline.trans: new file.
-
-	* transcode_data.h (rb_trans_t): add last_tc field.
-
-	* transcode.c (UNIVERSAL_NEWLINE): defined.
-	  (CRLF_NEWLINE): defined.
-	  (CR_NEWLINE): defined.
-	  (rb_trans_open_by_transcoder_entries): initialize last_tc.
-	  (trans_open_i): allocate one more room for output newline converter.
-	  (rb_trans_open): universal newline implemented.
-	  (more_output_buffer): take max_output argument instead ts.
-	  (output_replacement_character): take tc argument instead of ts.
-	  (transcode_loop): use last_tc field.
-	  (econv_init): add flags argument for rb_trans_open.
-	  (Init_transcode): Encoding::Converter::UNIVERSAL_NEWLINE defined.
-
-Wed Aug 13 14:00:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.c): generates parse.h together.
-
-	* id.c, id.h: use constants for parser tokens.
-
-Wed Aug 13 13:47:05 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: rewind cfp to show proper backtrace.
-	  [ruby-dev:35820]
-
-Wed Aug 13 13:09:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: fix for clean up.
-
-Wed Aug 13 11:45:51 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* vm_core.h: Declare rb_iseq_clone, which is used in class.c.
-
-Wed Aug 13 11:39:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_search_path): return the length of converter
-	  path.
-	  (load_transcoder_entry): renamed from load_transcoder.
-	  (load_transcoder): new function for loading transcoder by encoding
-	  names.
-	  (rb_transcoding_open_by_transcoder): extracted from
-	  rb_transcoding_open.
-	  (rb_transcoding_open): use load_transcoder and
-	  rb_transcoding_open_by_transcoder.
-	  (rb_trans_open_by_transcoder_entries): new function.
-	  (trans_open_i): construct entries array.
-	  (rb_trans_open): use rb_trans_open_by_transcoder_entries.
-
-Wed Aug 13 10:45:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: try to find exported directory.
-
-Wed Aug 13 10:16:35 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* doc/NEWS: Mention the Readline.vi_editing_mode?,
-	  Readline.emacs_editing_mode?, Readline::HISTORY[] and
-	  Readline::HISTORY.clear change.
-
-Wed Aug 13 08:03:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (econv_primitive_convert): add output_size argument.
-
-Wed Aug 13 07:41:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_trans_conv): report last transcode_obuf_full.
-	  (econv_max_output): new method Encoding::Converter#max_output.
-
-Wed Aug 13 02:46:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* error.c (rb_eEncCompatError): add Exception.
-
-	* include/ruby/ruby.h: ditto.
-
-	* encoding.c (rb_enc_check): use rb_eEncCompatError.
-
-	* string.c (rb_enc_cr_str_buf_cat): ditto.
-
-	* string.c (rb_str_sub_bang): ditto.
-
-	* string.c (rb_str_hex): ditto.
-
-	* string.c (rb_str_oct): ditto.
-
-Wed Aug 13 02:36:47 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (str_transcode): fix error message.
-
-Tue Aug 12 23:42:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_cEncodingConverter): new class Encoding::Converter.
-	  (econv_free): new function.
-	  (econv_s_allocate): ditto.
-	  (econv_init): ditto.
-	  (check_econv): ditto.
-	  (econv_primitive_convert): new method.
-	  (Init_transcode): define Encoding::Converter.
-
-Tue Aug 12 23:16:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_splice_0): call rb_str_drop_bytes, not rb_str_drop.
-
-Tue Aug 12 19:11:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: fix for enc.mk.
-
-Tue Aug 12 19:08:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_drop_bytes): new function to drop first bytes.
-
-Tue Aug 12 18:58:48 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_insnhelper.c (vm_define_method): move
-	  function place.
-
-Tue Aug 12 18:56:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c: more descriptive aliases of rb_str_new[2-5].
-	  [ruby-dev:35615]
-
-Tue Aug 12 18:51:29 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* gc.c (getrusage_time): Returned effective value on Windows.
-
-Tue Aug 12 18:51:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_trans_open): free ts before raise.
-
-Tue Aug 12 18:46:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimalCmp): should not ignore
-	  <=> comparison.  [ruby-dev:35732]
-
-Tue Aug 12 18:43:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/make_transdb.rb: *.erb.c is not used anymore.
-
-Tue Aug 12 18:32:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_trans_elem_t): new field: from and to.
-
-	* transcode.c (trans_open_i): just record from and to.
-	  (rb_trans_open): load transcodings.
-
-Tue Aug 12 18:32:03 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/syslog/syslog.c (mSyslog_open): Use of Check_SafeStr() is
-	  deprecated.
-	  (mSyslogConstants_LOG_MASK, mSyslogConstants_LOG_UPTO): Use
-	  NUM2INT() instead of FIX2INT() when the type of an given object
-	  is not determined.
-
-Tue Aug 12 18:14:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* tool/transcode-tblgen.rb (#transcode_tblgen): slight message
-	  improvement.
-
-Tue Aug 12 17:16:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (trans_open_i): check the result of rb_transcoding_open.
-
-Tue Aug 12 16:23:32 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_profile_result): use rb_str_catf.
-
-Tue Aug 12 16:13:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (TRANSCODE_ERROR): removed.
-
-	* tool/transcode-tblgen.rb: 8bit byte of ASCII-8BIT is a valid
-	  (but unique to ASCII-8BIT) character.
-
-	* transcode.c (rb_eConversionUndefined): new error.
-	  (rb_eInvalidByteSequence): ditto.
-
-Tue Aug 12 16:08:51 2008  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/pop.rb: POP3Command should export @socket since POP
-	  calls #socket.
-
-Tue Aug 12 16:06:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c, util.c (quorem, nrv_alloc, dtoa): enabled floating point
-	  support.
-
-Tue Aug 12 15:52:45 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_profile_result): use sprintf.
-
-Tue Aug 12 15:37:40 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_intern): should check symbol table overflow.
-
-Tue Aug 12 15:31:04 2008  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (send_request_with_body): Content-Length should
-	  be byte length of string. (closes #203)
-
-Tue Aug 12 15:17:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/depend: (transvpath_prefix): prefix has no extension, so replace
-	  %s with "".
-
-Tue Aug 12 15:03:43 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline.rb (TestReadline#test_safe_level_4):
-	  tested Readline.vi_editing_mode? and Readline.emacs_editing_mode?.
-
-Tue Aug 12 14:25:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/Makefile.in (.SUFFIXES): renamed to .trans.
-
-	* enc/make_encmake.rb: added --encs and --no-encs options.
-
-	* enc/depend (TRANSVPATH): fix for nmake.
-
-Tue Aug 12 14:19:53 2008  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/https.rb: suppress syntax warning.
-
-Tue Aug 12 14:15:51 2008  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (Net::HTTP#initialize): initialize net/https
-	  variables to suppress syntax warning.
-
-Tue Aug 12 14:15:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cptr.c (rb_dlptr_s_to_ptr): fixed shadowing variable.
-
-Tue Aug 12 10:25:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_delete): Array#delete to return deleted element.
-
-Tue Aug 12 10:18:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/win32ole/test_err_in_callback.rb: do not require 'mkmf'
-	  unless WIN32OLE is defined.
-
-Tue Aug 12 07:41:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): add resetstate_func field for
-	  resetting a state of stateful encoding.
-
-	* enc/trans/iso2022.trans (rb_EUC_JP_to_ISO_2022_JP): specify
-	  finish_eucjp_to_iso2022jp for resetstate_func.
-
-	* tool/transcode-tblgen.rb: specify NULL for resetstate_func.
-
-	* transcode.c (output_replacement_character): call resetstate_func
-	  before appending the replacement character.
-
-Tue Aug 12 07:19:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (get_replacement_character): extracted from
-	  output_replacement_character.
-
-Tue Aug 12 07:00:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): typedef at first.
-
-Tue Aug 12 06:48:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (rb_trans_conv): find second last error.
-
-Tue Aug 12 00:43:44 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_trans_result_t): new type.
-	  (rb_trans_elem_t): new type.
-	  (rb_trans_t): new type.
-
-	* transcode.c (transcode_dispatch_cb): removed.
-	  (transcode_dispatch): removed.
-	  (rb_transcoding_result_t): moved to rb_trans_result_t in
-	  transcode_data.h.
-	  (transcode_restartable0): goto follow_info when FUNsi.
-	  (rb_transcoding_open): use get_transcoder_entry.
-	  (rb_trans_open): new function.
-	  (rb_trans_conv): ditto.
-	  (rb_trans_close): ditto.
-	  (trans_open_i): ditto.
-	  (trans_sweep): ditto.
-	  (more_output_buffer): take rb_trans_t instead of rb_transcoding as
-	  an argument.
-	  (transcode_loop): take from_encoding and to_encoding instead of tr
-	  as arguments.  use rb_trans_open/rb_trans_conv/rb_trans_close.
-	  (str_transcode): don't use transcode_dispatch.
-
-Mon Aug 11 20:37:05 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* iseq.c (rb_iseq_clone): should preserve cref_stack link.
-
-Mon Aug 11 20:27:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/dl/cfunc.c (rb_dlcfunc_call): add taint check.
-
-	* ext/dl/dl.c (rb_dl_malloc): add rb_secure(2).
-
-	* ext/dl/dl.c (rb_dl_realloc): ditto.
-
-	* ext/dl/dl.c (rb_dl_free): ditto.
-
-	* ext/dl/dl.c (rb_dl_ptr2value): ditto.
-
-Mon Aug 11 20:11:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (getrusage_time): works only if RUSAGE_SELF is defined right
-	  now.
-
-	* gc.c (gc_profile_result): C99.
-
-Mon Aug 11 18:57:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_sample): rename #choice to #sample.  in
-	  addition, sample takes optional argument, a la #first.
-
-Mon Aug 11 18:28:02 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c: added GC::Profiler.
-
-Mon Aug 11 17:26:16 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/README.ja: added API document for
-	  Readline.vi_editing_mode? and Readline.emacs_editing_mode?.
-
-	* ext/readline/extconf.rb: checked rl_editing_mode variable in
-	  Readline library.
-
-	* ext/readline/readline.c (readline_s_emacs_editing_mode_p): added
-	  Readline.emacs_editing_mode? method.
-	  (readline_s_vi_editing_mode_p): added Readline.vi_editing_mode?
-	  method.
-	  (Init_readline): ditto.
-
-Mon Aug 11 16:56:40 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* test/readline/test_readline.rb: added test for Readline's class
-	  methods.
-
-Mon Aug 11 16:39:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* class.c (clone_method): should copy cbase in cref as well.
-	  [ruby-dev:35116]
-
-	* iseq.c (iseq_mark): mark original iseq object.
-
-	* iseq.c (iseq_free): do not free internal data if they have
-	  original iseq to belong.
-
-	* iseq.c (rb_iseq_clone): a new function to clone iseq value.
-
-Mon Aug 11 16:34:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/iso2022.trans: renamed from iso2022.erb.c.
-
-	* enc/trans/single_byte.trans: ditto.
-
-	* enc/trans/utf_16_32.trans: ditto.
-
-	* enc/trans/korean.trans: ditto.
-
-	* enc/trans/japanese.trans: ditto.
-
-	* enc/depend: follow the renaming.
-
-	* tool/build-transcode: ditto.
-
-Mon Aug 11 15:09:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (rb_cv_broken_glibc_ia64_erfc): renamed from
-	  rb_broken_glibc_ia64_erfc.
-	  [ruby-core:18228]
-
-Mon Aug 11 10:04:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): rename fields.
-	  readlen -> recognized_len.
-	  feedlen -> readagain_len.
-
-	* transcode.c: follow the field renaming.
-
-Sun Aug 10 22:34:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_restartable0): invalid handling simplified.
-	  (transcode_restartable): use PARTIAL_INPUT for converting buffered
-	  input.
-
-Sun Aug 10 22:24:24 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* encoding.c: include util.h.  [ruby-dev:35715]
-
-	* common.mk: ditto.
-
-Sun Aug 10 20:59:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): new field: flags.
-
-	* transcode.c (load_transcoder): extracted from transcode_dispatch_cb.
-	  (rb_transcoding_result_t): renamed from transcode_result_t.
-	  (rb_transcoding_open): new function.
-	  (rb_transcoding_convert): ditto.
-	  (rb_transcoding_close): ditto.
-	  (transcode_loop): use rb_transcoding_open, rb_transcoding_convert
-	  and rb_transcoding_close.
-	  (str_transcode): don't need rb_transcoding.
-
-Sun Aug 10 18:09:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: record checksum of
-	  transcode-tblgen.rb itself.
-
-Sun Aug 10 12:34:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* config.guess ({powerpc-apple,i586-pc}-haiku): re-applied r18403.
-	  [ruby-core:18110]
-
-	* config.{guess,sub}: updated to automake-1.10.1.
-
-Sun Aug 10 11:45:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/Makefile.in (make-workdir): use MAKEDIRS.
-
-	* enc/depend: makes target directory before compile/link.
-
-	* tool/transcode-tblgen.rb: creates target directory.
-
-Sun Aug 10 11:30:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c: rename my_transcoding to tc and my_transcoder to tr.
-
-Sun Aug 10 11:15:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): add feedlen field.
-
-	* transcode.c (transcode_restartable0): renamed from
-	  transcode_restartable.
-	  save input buffer into feed buffer if next character is started the
-	  point before input buffer.  for example, "\x00\xd8\x01" then "\x02"
-	  in UTF-16LE.  \x02 causes invalid and next character is started from
-	  \x01.
-	  (transcode_restartable): new function to call
-	  transcode_restartable0.  if feed buffer is not empty, convert it at
-	  first.
-
-Sun Aug 10 11:02:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (extconf): use MAKEDIRS.
-
-Sun Aug 10 09:35:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb.rb (IRB::Irb#inspect): instance_variables returns symbols
-	  instead of strings now.  [ruby-dev:34930]
-
-Sun Aug 10 09:22:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_char_start): refactored to remove readlen
-	  argument.
-	  (transcode_restartable): refactored to remove readlen variable.
-
-Sun Aug 10 08:56:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (STACK_LEVEL_MAX, ruby_stack_length): returns size_t.
-	  [ruby-core:18207]
-
-	* configure.in (rb_cv_missing__dtos18, rb_cv_missing_fconvert),
-	  ext/digest/md5/md5.c, ext/openssl/ossl.c (main),
-	  ext/socket/extconf.rb (ipv6, wide-getaddrinfo): main should be int.
-
-	* main.c (main), win32/winmain.c, wince/wincemain.c (WinMain): envp is
-	  no longer used so long time.  based on a patch from Peter Bowen at
-	  [ruby-core:18208]
-
-Sat Aug  9 22:05:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_loop): take destination and resize function
-	  as parameters.
-	  (more_output_buffer): ditto.
-	  (str_transcoding_resize): argument changed from rb_transcoding* to
-	  VALUE.
-	  (str_transcode): call transcode_loop with destination string and its
-	  resize function.
-
-	* transcode_data.h (rb_transcoding): move ruby_string_dest and
-	  flush_func to transcode_loop parameters.
-
-Sat Aug  9 21:29:45 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: encs depend on transdb.h
-
-Sat Aug  9 21:10:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_rshift_sign, rb_cv_binary_elf): get rid of
-	  AC_TRY_RUN.
-
-Sat Aug  9 16:33:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): new fields: next_info and next_byte.
-
-	* transcode.c (transcode_restartable): save/restore next_info and
-	  next_byte.
-	  sync readlen and in_p when invalid.
-
-Sat Aug  9 15:10:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode.c (transcode_restartable): my_transcoder argument removed.
-	  (transcode_loop): my_transcoder argument removed.
-
-Sat Aug  9 14:39:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): add fields for restartable
-	  transcoding.
-	  (rb_transcoder): add max_input field.
-	  from_unit_length field is renamed to input_unit_length.
-
-	* tool/transcode-tblgen.rb: generate max_input field.
-
-	* enc/trans/iso2022.erb.c: follow rb_transcoder change.
-
-	* enc/trans/utf_16_32.erb.c: ditto.
-
-	* transcode.c (PARTIAL_INPUT): new constant.
-	  (transcode_char_start): new function.
-	  (transcode_result_t): new type.
-	  (transcode_restartable): new function.
-	  (more_output_buffer): new function.
-	  (transcode_loop): use transcode_restartable.
-
-Sat Aug  9 13:35:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* stable/ext/socket/socket.c (NI_MAXHOST, NI_MAXSERV): fixed invalid
-	  preprocessor directives.  a patch from Peter Bowen at
-	  [ruby-core:18211].
-
-Sat Aug  9 06:37:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/make_encdb.rb, enc/trans/make_transdb.rb: skip nonexistent
-	  directory.  [ruby-dev:35802]
-
-Sat Aug  9 01:07:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/trans/utf_16_32.erb.c (fun_so_from_utf_32le): implemented.
-	  (fun_so_to_utf_32le): implemented.
-	  [ruby-dev:35777]
-
-Sat Aug  9 00:42:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoder): from_unit_length field added.
-	  from_utf8 field removed.
-
-	* tool/transcode-tblgen.rb: generate offsets range.
-	  follow rb_transcoder change.
-
-	* transcode.c (transcode_loop): don't use from_utf8.
-	  make invalid region from_unit_length wise.
-
-	* enc/trans/iso2022.erb.c: follow rb_transcoder and
-	  transcode_generate_node change.
-
-	* enc/trans/utf_16_32.erb.c: follow rb_transcoder and
-	  transcode_generate_node change.
-	  explicit :invalid map removed.
-
-Fri Aug  8 23:29:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (TRANSCSRCS): needs rule_subst to apply.
-
-	* io.c (shutdown): not define if defined already.
-
-Fri Aug  8 22:47:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (opt_eq_func): large function to make inline.
-
-	* bcc32/Makefile.sub (config.h): cannot compile a big inline function.
-
-Fri Aug  8 21:09:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (enk.mk): give not RUBY but MINIRUBY.
-
-Fri Aug  8 17:03:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (shutdown, sched_yield, pthread_attr_setinheritsched):
-	  check for Haiku.
-
-	* eval_intern.h, io.c, thread_pthread.c: use autoconfisticated results.
-
-Fri Aug  8 16:52:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (enc.mk): mkmf.rb requires rbconfig.rb.
-
-	* common.mk (srcs-enc): renamed from transcodes.
-
-	* enc/Makefile.in (make-workdir): creates object directories.
-
-	* common.mk (encdb.h): see both $(srcdir)/enc and enc.
-
-	* enc/make_encdb.rb: ditto.
-
-	* enc/trans/make_transdb.rb: fix for the case no transdirs are given.
-
-	* enc/trans/make_transdb.rb: converts only one transcoders for each
-	  basename.
-
-Fri Aug  8 10:53:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb: randomize source port and transaction id.
-	  CVE-2008-1447.
-
-	* lib/resolv-replace.rb (UDPSocket#bind): don't resolv host if host is
-	  "".
-
-Fri Aug  8 04:20:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: see both $(srcdir)/enc/trans and enc/trans.
-
-	* enc/trans/make_transdb.rb: ditto.
-
-Fri Aug  8 00:05:02 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/.document: added readline/readline.c.
-
-	* ext/readline/readline.c: changed Copyright. added RDoc.
-
-	* ext/readline/README.ja: fixed typo.
-
-	* ext/readline/README: contents was moved RDoc.
-
-Thu Aug  7 23:43:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* transcode_data.h (rb_transcoding): new field "stateful".
-	  (rb_transcoder): preprocessor and postprocessor field removed.
-	  change arguments of func_ii, func_si, func_io and func_so.
-	  new field "finish_func".
-
-	* tool/transcode-tblgen.rb: make FUNii, FUNsi and FUNio
-	  generatable.
-
-	* transcode.c (transcoder_lib_table): removed.
-	  (transcoder_table): change structure.
-	  (transcoder_key): removed because the above structure change.
-	  (make_transcoder_entry): new function.
-	  (get_transcoder_entry): ditto.
-	  (rb_register_transcoder): follow the structure change.
-	  (declare_transcoder): ditto.
-	  (transcode_search_path): new function for breadth first search to
-	  find a list of converters.
-	  (transcode_search_path_i): new function.
-	  (transcode_dispatch_cb): ditto.
-	  (transcode_dispatch): use transcode_search_path.
-	  (transcode_loop): follow the argument change.
-	  (str_transcode): preprocessor and postprocessor stuff removed.
-
-	* enc/trans/iso2022.erb.c: new file.  ISO-2022-JP conversion
-	  re-implemented.
-
-	* enc/trans/japanese.erb.c: ISO-2022-JP stuff removed.
-
-	* enc/trans/utf_16_32.erb.c: follow argument change of FUNso.
-
-	[ruby-dev:35798]
-
-Thu Aug  7 22:55:44 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/README.ja: updated API document for Readline module.
-
-Thu Aug  7 20:52:08 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (login): raise FTPReplyError if passwd or acct
-	  is not supplied.  fixed [ruby-core:18058].
-
-Thu Aug  7 18:01:44 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* misc/ruby-mode.el (ruby-imenu-create-index-in-block): Fix the
-	  regexp to only pick definition lines properly.  `module_function'
-	  is not a definition of a module named `_function'.
-
-Thu Aug  7 17:47:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend: add transdb.c.
-
-Thu Aug  7 16:28:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, common.mk, {bcc,win}32/Makefile.sub (clean-ext): do not
-	  use miniruby.
-
-Thu Aug  7 14:17:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend: removed needless explicit commands.
-
-	* lib/mkmf.rb, {bcc32,win32}/Makefile.sub (CLEANLIBS, CLEANOBJS):
-	  moved clean targets to platform makefiles.
-
-Thu Aug  7 13:12:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/getaddrinfo.c (gai_strerror): ignore only on Haiku.
-	  a patch from <zn at mbf.nifty.com>, [ruby-dev:35796].
-
-Thu Aug  7 06:31:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/process.rb (test_popen_fork): skip a test which is
-	  freeze in FreeBSD.
-
-Thu Aug  7 06:05:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* config.guess: add powerpc-apple-haiku, i586-pc-haiku.
-	  see [ruby-core:18110]
-
-Thu Aug  7 05:51:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* eval_intern.h: Add support to Haiku. see [ruby-core:18110]
-
-	* include/ruby/defines.h: ditto.
-
-	* configure.in: ditto.
-
-	* thread_pthread.c: ditto.
-
-	* io.c: ditto.
-
-	* lib/mkmf.rb: ditto.
-
-	* ext/socket/getaddrinfo.c: ditto.
-
-	* ext/socket/extconf.rb: ditto.
-
-	* ext/socket/socket.c: ditto.
-
-	* ext/socket/addrinfo.h: ditto.
-
-	* ext/socket/getnameinfo.c: ditto.
-
-Thu Aug  7 05:43:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: mkdir enc/trans before build tables.
-
-Thu Aug  7 05:18:30 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/depend: enc/*.c is source but enc/trans/*.c is generated.
-
-Thu Aug  7 05:14:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regenc.c (code_to_mbc): raise RangeError Integer#chr
-	  when more than 255 is given with single byte encoding.
-	  [ruby-dev:35789]
-
-Thu Aug  7 05:06:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (run_final): runs finalizers with the object terminated.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): keeps finalized objects from
-	  linking to freelist.
-
-Thu Aug  7 04:43:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/depend: for build in other than srcdir.
-
-Wed Aug  6 22:40:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (transcode_generate_node): code
-	  argument removed.
-
-Wed Aug  6 21:25:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (chain_finalized_object): deletes finalizers to be invoked from
-	  finalizer_table.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): warns when could not invoke
-	  finalizers.
-
-Wed Aug  6 20:56:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/depend: transcode table generation depends on
-	  tool/transcode-tblgen.rb.
-
-Wed Aug  6 20:48:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_gc_call_finalizer_at_exit): self-referencing finalizers
-	  cannot be invoked.  [ruby-dev:35681]
-
-Wed Aug  6 20:44:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: distinguish UNDEF and INVALID.
-	  [ruby-dev:35709]
-
-	* transcode.c (transcode_loop): don't need rb_enc_mbclen now.
-
-Wed Aug  6 14:40:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (transdb.h): requires transcoders.
-
-	* enc/depend (srcs): target for transcoders.
-
-Wed Aug  6 14:04:08 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/depend: replace not only $(<:...) but also $<.
-
-Wed Aug  6 13:54:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): export BASERUBY.
-
-	* enc/depend: avoid GNU make'ism.
-
-Wed Aug  6 07:59:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb (ActionMap#eql?): use == to compare @map.
-
-Wed Aug  6 07:45:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/transcode-tblgen.rb: show generating tables in verbose mode.
-	  (transcode_generate_node): call ActionMap#generate_node with showing
-	  table name.
-
-	* enc/trans/utf_16_32.erb.c: use transcode_generate_node.
-
-Wed Aug  6 06:55:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): propagates fatal error and system
-	  exit to the main thread.
-
-Wed Aug  6 05:31:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_to_encoding_index, rb_to_encoding): check if the name
-	  is ascii compatible as well as Encoding.find.
-
-	* transcode.c (str_encode): no need to duplicate first.
-
-Wed Aug  6 05:08:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): reset to real class.
-
-	* file.c (rb_find_file_ext, rb_find_file): ditto.
-
-	* io.c (io_reopen): ditto.
-
-Wed Aug  6 03:56:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (transcodes), tool/build-transcode: generates transcode
-	  sources.
-
-	* enc/trans/{japanese,korean,single_byte,utf_16_32}.c: to be
-	  autogenerated now.
-
-	* enc/depend: added rules for .c from .erb.c.
-
-Tue Aug  5 20:46:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/build-transcode: new file.
-
-	* tool/transcode-tblgen.rb: new file.
-
-	* enc/trans/make_transdb.rb: exclude *.erb.c.
-
-	* enc/depend: exclude *.erb.c.
-
-	* enc/trans/utf_16_32.erb.c: new file.
-
-	* enc/trans/single_byte.erb.c: new file.
-
-	* enc/trans/japanese.erb.c: new file.
-
-	* enc/trans/korean.erb.c: new file.
-
-	* enc/trans/iso-8859-2-tbl.rb: new file.
-
-	* enc/trans/iso-8859-3-tbl.rb: new file.
-
-	* enc/trans/iso-8859-4-tbl.rb: new file.
-
-	* enc/trans/iso-8859-5-tbl.rb: new file.
-
-	* enc/trans/iso-8859-6-tbl.rb: new file.
-
-	* enc/trans/iso-8859-7-tbl.rb: new file.
-
-	* enc/trans/iso-8859-8-tbl.rb: new file.
-
-	* enc/trans/iso-8859-9-tbl.rb: new file.
-
-	* enc/trans/iso-8859-10-tbl.rb: new file.
-
-	* enc/trans/iso-8859-11-tbl.rb: new file.
-
-	* enc/trans/iso-8859-13-tbl.rb: new file.
-
-	* enc/trans/iso-8859-14-tbl.rb: new file.
-
-	* enc/trans/iso-8859-15-tbl.rb: new file.
-
-	* enc/trans/eucjp-tbl.rb: new file.
-
-	* enc/trans/sjis-tbl.rb: new file.
-
-	* enc/trans/euckr-tbl.rb: new file.
-
-	* enc/trans/utf_16_32.c: regenerated.
-
-	* enc/trans/single_byte.c: regenerated.
-
-	* enc/trans/japanese.c: regenerated.
-
-	* enc/trans/korean.c: regenerated.
-
-	[ruby-dev:35730]
-
-Tue Aug  5 18:02:53 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/io/nonblock/test_flush.rb (TestIONonblock#test_flush):
-	  rescue some exceptions. [ruby-dev:35638]
-
-Tue Aug  5 16:40:06 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (chdir): handle 5xx errors correctly.
-	  fixed [ruby-core:18057].
-
-Tue Aug  5 16:38:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h, bcc32/Makefile.sub (config.h): bcc 5.8 has
-	  stdint.h.
-
-Tue Aug  5 16:13:05 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (disconnect): do not refer to SSL::SSLSocket for
-	  environments without OpenSSL. fixed [ruby-dev:35755].
-
-Tue Aug  5 14:19:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_stat_mode): generalized st_mode mask.
-
-Tue Aug  5 12:43:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (retry_sendfile, retry_read): ENOSYS and EWOULDBLOCK are not
-	  defined on every platforms.
-
-Tue Aug  5 12:34:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode_data.h (TRANSCODE_ERROR): common transcode failure
-	  exception, would be changed later.
-
-	* enc/trans/japanese.c (UNSUPPORTED_MODE): unsupported mode transition
-	  exception.
-
-Tue Aug  5 03:29:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): respect overridden <=> for String and
-	  Fixnum.  [ruby-core:17708]
-
-	* include/ruby/node.h (NOEX_BASIC): basic definition method flag.
-
-	* include/ruby/intern.h, vm_method.c (rb_method_basic_definition_p):
-	  new function to check if the method is not redefined after the
-	  initialization.
-
-	* vm_method.c (rb_obj_respond_to): use rb_method_basic_definition_p.
-
-Mon Aug  4 20:39:06 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* Makefile.in (update-rubyspec): renamed the rubyspec directory
-	  "spec". Changed directory structure.
-
-	* Makefile.in (test-rubyspec): ditto.
-
-	* spec/README: described the structure of "spec" directory.
-
-	* spec/default.mspec: configured for Matz's Ruby Implementation.
-
-Mon Aug  4 19:21:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_tmp_new): added.
-
-	* vm_eval.c (vm_call_super): fixed typo, and get rid of too large
-	  alloca.  [ruby-core:17922]
-
-Mon Aug  4 16:48:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (deferred_nodes, compstmt, arg, fixup_nodes, range_op): fix
-	  up fixnum range literal in conditional as automagical line number
-	  comparison.  [ruby-core:12124], [ruby-dev:35731]
-
-Mon Aug  4 14:41:25 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/net/smtp.rb (Net::SMTP::rcptto): fix a typo. a patch from
-	  Masao Takaku <masao at nii.ac.jp>
-	  fix [ruby-dev:35489].
-
-Mon Aug  4 14:08:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (dump_ensure), process.c (run_exec_dup2),
-	  string.c (rb_str_replace), transcode.c (transcode_dispatch): fixed
-	  memory leaks.  based on patches from shinichiro.h <shinichiro.hamaji
-	  AT gmail.com> at [ruby-dev:35751].
-
-Sun Aug  3 19:32:52 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (hash2named_arg): refactoring.
-
-	* ext/win32ole/win32ole.c (ole_invoke, fole_respond_to, ev_on_event,
-	  fev_off_event): accepts Symbol argument.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Sun Aug  3 10:41:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_shared_replace): fixed memory leak.  a patch from
-	  shinichiro.h <shinichiro.hamaji AT gmail.com> at [ruby-dev:35742]
-
-Sat Aug  2 22:55:41 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_err_in_callback.rb: remove temporary files.
-	  some refactoring.
-
-Sat Aug  2 15:51:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (yylex): 8 and 9 in octal integer should cause compile
-	  error.  [ruby-dev:35729]
-
-Sat Aug  2 01:06:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c: add U+FF5E to EUC-JP.
-	  [ruby-dev:35720] [ruby-dev:35722]
-
-Fri Aug  1 23:49:44 2008  TAKAO Kouji  <kouji@takao7.net>
-
-	* ext/readline/extconf.rb: checked to have clear_history in
-	  readline library.
-	* ext/readline/readline.c (hist_get, hist_each, Init_readline):
-	  The offset specified for the argument of history_get() might be
-	  different in GNU Readline and libedit. If use libedit, it was
-	  corrected that the computational method of the offset specified
-	  for the argument of history_get() when the Readline module was
-	  initialized was decided.
-	  (hist_get, hist_set): If use libedit, accesses first an input
-	  content in history when specifies the negative offset for the
-	  argument of history_get() or replace_history_entry(). Then
-	  checks the offset is negative in ruby.
-	  (rb_remove_history): When compiling, it corrects it to warning
-	  when libedit is used.
-	  (hist_clear, Init_readline): added Readline::HISTORY.clear
-	  method. [ruby-dev:35551]
-	* test/readline/test_readline_history.rb: added unit test for
-	  Readline::HISTORY.
-
-Fri Aug  1 23:26:45 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (transcode_loop): undefined character is replaced with
-	  only one character. [ruby-dev:35709]
-
-Fri Aug  1 23:26:22 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	Merged r16430(akr), r16431(akr), r16433(akr), r16469(nobu), and
-	r17874(akr) from ruby_1_8.
-
-	* Makefile.in (update-rubyspec): added
-
-	* Makefile.in (test-rubyspec): added
-
-Fri Aug  1 23:16:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c: add support for CP51932,
-
-Fri Aug  1 22:59:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c: add U+FF0C,
-
-Fri Aug  1 21:49:41 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/sdbm/test_sdbm.rb: add some tests.
-
-Fri Aug  1 21:36:00 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gc.c (allocate_heaps, assign_heap_slot, rb_newobj_from_heap):
-	  reset during_gc before raising NoMemoryError.
-
-Fri Aug  1 21:29:56 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (Init_BareVM): check failure of malloc().
-
-Fri Aug  1 20:55:27 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c (to_SHIFT_JIS_EF_BF_offsets): add U+FFF3,
-	  U+FFF4, U+FFF5.
-
-	* enc/trans/japanese.c (to_SHIFT_JIS_EF_BF_infos): ditto.
-
-	* enc/trans/japanese.c (to_EUC_JP_EF_BF_infos): added.
-
-	* enc/trans/japanese.c (to_EUC_JP_EF_BF): added.
-
-	* enc/trans/japanese.c (to_EUC_JP_EF_infos): change size.
-	  [ruby-dev:35714]
-
-Fri Aug  1 18:27:15 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* parse.y (parser_yylex): removed an useless conditional, and magic
-	  comment are ignored unless at the first of line.
-
-	* test/ruby/test_m17n.rb (test_magic_comment_vim): added.
-
-	* test/ruby/test_m17n.rb (test_magic_comment_at_various_positions):
-	  added.
-
-Fri Aug  1 14:54:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_seekdir): no need to rewind to seek forward.
-
-Fri Aug  1 05:31:08 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (output_replacement_character):
-	  rename from _get_replacement_character.
-
-	* transcode.c (output_replacement_character):
-	  fix replacement on UTF-32{BE,LE}. [ruby-dev:35705]
-
-	* transcode.c (transcode_loop): ditto.
-
-	* test/ruby/test_transcode.rb (test_invalid_replace):
-	  add for above.
-
-Fri Aug  1 01:01:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (rb_proc_call_with_block): reduce comparison.
-
-Thu Jul 31 22:17:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpMult): prevent memory leak.
-
-Thu Jul 31 20:05:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_transcode.rb (test_unicode_public_review_issue_121):
-	  fix option1 and 3.
-
-Thu Jul 31 19:54:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (get_replacement_character): use U+FFFD as replacement
-	  character when convert to Unicode.
-
-	* test/ruby/test_transcode.rb (test_unicode_public_review_issue_121):
-	  rename from test_public_review_issue_121.
-
-	* test/ruby/test_transcode.rb (test_unicode_public_review_issue_121):
-	  enable option2.
-
-Thu Jul 31 17:00:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (get_replacement_character): fix: invalid byte sequence
-	  is always replaced "\x00?".
-
-Thu Jul 31 16:37:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/rubygems/test_gem_ext_configure_builder.rb
-	  (test_self_build_fail): remove extra newline. [ruby-dev:35704]
-
-Thu Jul 31 15:11:11 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: added test_shift_jis
-	  (contributed by Yoshihiro Kambayashi) and
-	  test_public_review_issue_121
-	  (see http://www.unicode.org/review/pr-121.html)
-
-Thu Jul 31 13:18:30 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* include/ruby/ruby.h (struct RString): size of ary must be
-	  RSTRING_EMBED_LEN_MAX + 1.
-
-Thu Jul 31 12:23:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_unpack): upper half of hexdigits has never been used.
-
-Thu Jul 31 11:31:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck/syck.h (ASSERT): fix typo at r18176.
-
-	* ext/syck/rubyext.c (rb_syck_compile): expression in ASSERT() has no
-	  effect unless debug mode.
-
-Thu Jul 31 10:51:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (ruby_iseq_disasm_insn): suppress warnings on platforms which
-	  int size differs from pointer size.
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_get_asn1type): ditto
-
-	* ext/syck/rubyext.c (rb_syck_err_handler),
-	  (syck_default_error_handler): ditto.
-
-Thu Jul 31 02:21:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/rubyext.c (rb_syck_compile): remove meaningless branch
-	  that misleads into thinking that the variable sav may be
-	  uninitialized.
-
-Thu Jul 31 01:25:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_mutex_unlock_all): mutex is no longer a ruby object.
-
-Thu Jul 31 01:18:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (magic_comment_encoding): remove meaningless null check.
-
-Thu Jul 31 01:09:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpIsRoundMode): fix tautology
-	  condition.
-
-Thu Jul 31 00:58:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (pack_unpack): reduced static variables.
-
-Thu Jul 31 00:10:20 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (rb_proc_call_with_block): prevent null reference.
-
-Wed Jul 30 22:19:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (vtable_free): remove meaningless null check.
-
-Wed Jul 30 22:08:25 2008  Tanaka Akira  <akr@fsij.org>
-
-	* dir.c (struct dir_data): change path field char * to VALUE.
-	  (mark_dir): new function for mark path field.
-	  (free_dir): follow the path field change.
-	  (dir_s_alloc): ditto.
-	  (dir_initialize): ditto.
-	  (dir_s_open): ditto.
-	  (dir_inspect): ditto.
-	  (dir_path): return (duplicate of) the path field to preserve
-	  encoding.  [ruby-dev:35685]
-
-Wed Jul 30 22:06:56 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (sym_inspect): remove dead code.
-
-Wed Jul 30 21:32:52 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ChangeLog: fix wrong method name and add reference.
-
-Wed Jul 30 21:30:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regparse.c (name_add): fix memory leak.
-
-Wed Jul 30 21:08:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/syck.c (syck_free_parser): fix memory leak by
-	  YAML::Syck.compile.
-
-	* regparse.c (parse_exp): fix memory leak at Regexp.new("x{1,1}").
-
-Wed Jul 30 17:48:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_select): recalc the rest of timeout for each
-	  iterations.  [ruby-core:18015]
-
-Tue Jul 29 23:37:37 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (io_ungetc): raise NotImplementedError when ungetc is called
-	  against dummy encoding IO.  [ruby-dev:35686]
-
-	* io.c (rb_io_getline_1): ditto when gets with delimiter is called.
-
-	* io.c (io_getc): ditto when getc is called.
-
-	* test/ruby/test_io_m17n.rb (test_terminator_stateful_conversion,
-	  test_getc_stateful_conversion, test_ungetc_stateful_conversion):
-	  these tests should raise NotImplementedError.
-
-Tue Jul 29 22:55:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_io.rb (pipe): run reader thread and writer thread.
-
-Tue Jul 29 21:38:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (Init_bigdecimal): fix typo.
-
-Tue Jul 29 21:35:59 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb (test_passwd): age field may be string under
-	  some environments.
-
-Tue Jul 29 17:54:35 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (char_casecmp): fix: return 0 if either of characters is NUL.
-
-Tue Jul 29 13:17:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/etc/test_etc.rb (test_getpwuid): fix for users whose uid is
-	  shared.
-
-Tue Jul 29 05:37:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext, rb_find_file): explicit relative path
-	  which starts with "./" or "../" should be searched from cwd
-	  instead of load path.  [ruby-dev:35673]
-
-Tue Jul 29 02:39:46 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* math.c (math_atanh): raise EDOM on FreeBSD when atanh(1).
-
-	* math.c (math_log): ditto.
-
-	* math.c (math_log2): ditto.
-
-	* math.c (math_log10): ditto.
-
-	* test/ruby/test_math.rb: test for above.
-
-Tue Jul 29 01:41:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* dir.c (struct dir_data): intenc field removed.
-	  (dir_s_alloc): intenc initialization removed.
-	  (dir_initialize): :internal_encoding option removed.  dirname code
-	  conversion removed.
-	  (dir_enc_str): code conversion removed.
-	  [ruby-dev:35661]
-
-Mon Jul 28 21:32:17 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/: use PNG instead of zlib as binary data.
-
-Mon Jul 28 21:24:33 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.[ch] (cond_every_entry, rb_thread_cond_struct): reverted
-	  r18239 because r18245 made the changes unnecessary.
-
-	* thread.c (rb_mutex_struct): define after including thread_{pthread,
-	  win32}.c.
-
-Mon Jul 28 21:00:10 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_require.rb (test_require_too_long_filename):
-	  Kernel#require does not use dln_find_file_r (at r18242).
-
-Mon Jul 28 20:17:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_core.h: move the definition of struct rb_mutex_struct.
-
-	* thread.c: ditto.
-
-Mon Jul 28 18:58:46 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (mutex_unlock): fix typo.
-
-Mon Jul 28 18:15:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext, rb_find_file): not to split load path with
-	  path separator.  [ruby-Bugs-21356]
-
-Mon Jul 28 18:14:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (overlapped_socket_io, fcntl, rb_w32_close): must not
-	  pass a pointer to int which is smaller than st_data_t on mswin64.
-
-Mon Jul 28 16:49:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (CreateChild, overlapped_socket_io): suppress
-	  warnings.
-
-Mon Jul 28 16:06:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (MAXPATHLEN): define before use.
-
-Mon Jul 28 16:01:12 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.[ch] (cond_every_entry, rb_thread_cond_struct): moved
-	  the definitions from .c to .h because rb_thread_cond_struct is used
-	  in vm_core.h.
-
-Mon Jul 28 14:29:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (load_lib): use dln_find_file_r instead of dln_find_file.
-
-Mon Jul 28 00:18:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_core.h, thread.c: It is now prohibited to use Data_Get_Struct in
-	  *_free against an object that is going to be free'ed.  So, change type
-	  of thread_t#keeping_mutexes from VALUE to mutex_t.
-
-	* vm.c: remove mark to keeping_mutexes.
-
-Sun Jul 27 23:32:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/openssl/test_ssl.rb (server_loop): rescue Errno::EINVAL and
-	  Errno::ECONNABORTED.
-
-Sun Jul 27 22:11:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* bootstraptests/method.rb: increase RLIMIT_STACK size to 4M+8Kbytes
-	  because FreeBSD fails this less than that.
-
-Sun Jul 27 21:45:59 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (gc_mark_children, obj_free): T_DEFERRED should not be appear.
-
-	* gc.c (gc_sweep, finalize_list): fix to decrement heap_slot#limit
-	  after executing finalizer.
-
-Sun Jul 27 14:48:37 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h: add a type T_DEFERRED.
-
-	* gc.c: fix deferred finalizer system.  finalize processes of
-	  T_DATA and T_FILE are executed after gc process.
-	  And fix to use BUILTIN_TYPE() instead of seeing flag.
-
-	* thread.c, vm_core.h: add RUBY_VM_SET_FINALIZER_INTERRUPT()
-	  and check interrupt_flag at rb_thread_execute_interrupts().
-
-	* thread.c (mutex_mark): fix to mark next_mutex.
-
-	* vm.c (rb_thread_mark): fix to mark keeping_mutexes.
-
-Sun Jul 27 09:15:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.h (dln_find_exe, dln_find_file): deprecated, use reentrant
-	  versions instead.
-
-Sun Jul 27 09:02:32 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/rinda/tuplespace.rb: merged from 1.8.
-
-	* test/rinda/test_rinda.rb: merged from 1.8.
-
-Sat Jul 26 22:45:18 2008  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* sample/exyacc.rb: fixed NoMethodError(Kernel#sub!).
-	  replaced use of special variables with explicit IO
-	  operations.
-
-Sat Jul 26 21:17:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (Init_win32ole): add
-	  WIN32OLE_EVENT#handler=, WIN32OLE_EVENT#handler
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Sat Jul 26 07:44:14 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (add_event_call_back): remove unused
-	  variable.
-
-Fri Jul 25 23:48:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (gc_sweep, obj_free, run_final): defer finalizers of IO and
-	  Data.  [ruby-dev:35578]
-
-Fri Jul 25 23:35:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils#split_header_value):
-	  reduce backtrack.  based on a fix by Christian Neukirchen
-	  <chneukirchen AT gmail.com>.
-
-Fri Jul 25 21:55:38 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/enc/test_koi8.rb: move from test/ruby/test_koi8.rb.
-
-Fri Jul 25 21:09:32 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_invoke, add_event_callback,
-	  rescue_callback): refactoring.
-
-Fri Jul 25 20:52:44 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/err_in_callback.rb: add test of raising
-	  exception in WIN32OLE_EVENT callback.
-
-	* test/win32ole/test_err_in_callback.rb: ditto.
-
-Fri Jul 25 20:43:57 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (Init_win32ole): add
-	  WIN32OLE_EVENT#off_event.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-	* test/win32ole/test_win32ole_event.rb: some refactoring.
-
-Fri Jul 25 19:50:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regint.c (xmalloc, xrealloc, xfree): not to use ruby managed memory.
-
-Fri Jul 25 15:52:40 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (vm_invoke_proc): skip setting safe_level if
-	  it from bmethod.  This change makes test/ruby/test_proc.rb pass.
-
-Fri Jul 25 10:00:00 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: refactoring/cleanup of
-	  test_iso_2022_jp(_1)
-
-Fri Jul 25 04:12:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_convert): output of mime encode is US-ASCII.
-	  [ruby-list:45257]
-
-Fri Jul 25 02:43:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* sample/coverage.rb: move from lib/coverage.rb because this remains in
-	  an early phase of development.
-
-Fri Jul 25 00:10:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_find_file_ext, rb_find_file): converts Windows style path
-	  to Cygwin path.  [ruby-dev:35647]
-
-Thu Jul 24 16:30:21 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (exit_handler): use st_free_table() to free socklist.
-
-	* win32/win32.c (rb_w32_pipe_exec, rb_w32_accept, rb_w32_socket,
-	  rb_w32_socketpair): should check and release fd and sockets/handles
-	  if an error occurs in rb_w32_open_osfhandle().
-
-Thu Jul 24 16:05:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (overlapped_socket_io): avoid warnings.
-
-	* thread_win32.c (ubf_handle): refactoring.
-
-Thu Jul 24 07:01:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c: got rid of improper casts.
-
-Wed Jul 23 23:19:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/socket/test_tcp.rb (test_recvfrom): replace an irrelevant test
-	  for old behavior.
-
-Wed Jul 23 21:38:16 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_marshal.rb: suppress warning during test.
-
-Wed Jul 23 21:35:53 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_dir.rb: suppress warning during test.
-
-Wed Jul 23 18:27:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/{stubs,tcltklib}.c, ext/tk/tkutil/tkutil.c: fix warnings
-	  about constness and signedness.
-
-Wed Jul 23 17:04:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/openssl_missing.h (d2i_of_void): define for older
-	  versions.  [ruby-dev:35637]
-
-Wed Jul 23 13:53:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/curses/extconf.rb: use try_static_assert.
-
-Wed Jul 23 10:06:19 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/zlib/test_zlib.rb (TestZlibDeflate#test_params): suppress a
-	  finalizer warning.
-
-Wed Jul 23 06:25:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck: suppress warnings more.
-
-Wed Jul 23 03:19:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (struct input_code.name, input_codename):
-	  constified.
-
-Wed Jul 23 03:02:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/syck: suppress warnings.
-
-Wed Jul 23 00:34:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl: suppress warnings.
-
-Tue Jul 22 23:01:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/syck/rubyext.c, ext/syck/yaml2byte.c, ext/syck/emitter.c,
-	  ext/syck/syck.c, ext/syck/handler.c, ext/syck/syck.h: suppress GCC
-	  warning.
-
-Tue Jul 22 20:42:24 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimalCmp): BigDecimal#<=> should
-	  return nil if an argument can't be coerced into BigDecimal.
-
-	* ext/bigdecimal/bigdecimal.h, ext/bigdecimal/bigdecimal.c
-	  (VpIsNegDoubleZero, VpItoV): comment out unused functions.
-
-Tue Jul 22 20:33:54 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rdoc/test_rdoc_parser_ruby.rb (teardown): close tempfile.
-
-Tue Jul 22 19:38:38 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* test/ruby/test_transcode.rb: added two comments
-
-Tue Jul 22 18:08:34 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja: mention about FIX2LONG and NUM2LONG.
-	  see [ruby-dev:35197]
-
-Tue Jul 22 17:53:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (insn_data_to_s_detail), file.c (rb_stat_inspect),
-	  iseq.c (ruby_iseq_disasm_insn, ruby_iseq_disasm),
-	  process.c (pst_message), re.c (match_inspect): use rb_str_catf.
-
-	* dir.c (dir_inspect), iseq.c (iseq_inspect, insn_operand_intern): use
-	  rb_sprintf.
-
-	* error.c (rb_name_error, rb_raise, rb_loaderror, rb_fatal): use
-	  rb_vsprintf.
-
-Tue Jul 22 17:20:25 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (init_func): new function to get API's address which
-	  is often used and not supported on all Windows.
-
-	* win32/win32.c (overlapped_socket_io): shouldn't use overlapped I/O if
-	  CancelIo() is not supported.
-
-Tue Jul 22 16:47:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h, sprintf.c (rb_str_catf, rb_str_vcatf): new
-	  functions.  [ruby-dev:35597]
-
-	* string.c (rb_str_capacity): new function to return the capacity.
-
-Tue Jul 22 16:08:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (connect_blocking, socks_connect_blocking,
-	  ruby_connect): cast.
-
-Tue Jul 22 11:05:08 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_dir.rb: use realpath of tmpdir. [ruby-dev:35481]
-
-	* test/ruby/test_process.rb: ditto.
-
-Tue Jul 22 09:51:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el: fix here-doc strings with inner quotes.  patches
-	  by Nathan Weizenbaum <nex342 AT gmail.com> from [ruby-core:17615]
-	  through [ruby-core:17910].
-
-Tue Jul 22 04:26:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_buf_new2): optimization for literals.
-
-	* string.c (str_buf_cat): returns VALUE.
-
-Tue Jul 22 03:34:01 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc*: Update to RDoc 2.1.0 r112.
-
-Tue Jul 22 02:51:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_buf_cat2, rb_str_cat2): optimization
-	  for literals.
-
-Tue Jul 22 02:50:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja (1.5 Manipulating Ruby data): fix the
-	  prototype of rb_vsprintf, and added rb_str_cat2.  [ruby-dev:35622]
-
-Mon Jul 21 17:15:38 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_filesystem_encoding): use locale encoding on Unix.
-	  [ruby-dev:35617]
-
-Mon Jul 21 15:29:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (struct __sbuf, FILE): use size_t.
-
-	* sprintf.c (ruby__sfvwrite): ditto.
-
-Mon Jul 21 13:55:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* README.EXT, README.EXT.ja (1.5 Manipulating Ruby data): mentioned
-	  rb_sprintf and rb_vsprintf.  [ruby-dev:35611]
-
-Mon Jul 21 10:25:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (prepare_getline_args): check if rs is a string when non-nil
-	  lim is given.  [ruby-dev:35610]
-
-Mon Jul 21 04:55:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* dir.c (dir_initialize): use rb_convert_type instead of
-	  rb_check_convert_type to prevent SEGV by Dir.new(".", true).
-	  (dir_initialize): use FilePathValue before rb_enc_get(dirname) to
-	  prevent SEGV by Dir.new(0).
-
-Mon Jul 21 04:42:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_s_union): useless rb_enc_get call removed to prevent
-	  SEGV by Regexp.union("", nil).
-
-Sun Jul 20 22:50:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): NODE_POSTEXE should set each end
-	  procs only once.  [ruby-dev:35596]
-
-Sun Jul 20 16:00:37 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Invoke): use rb_protect
-	  instead of rb_rescue2. [ruby-dev:35595]
-
-Sun Jul 20 01:23:24 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Invoke): little refactoring.
-
-	* ext/win32ole/win32ole.c (EVENTSINK_GetIDsOfNames): return
-	  ITypeInfo::GetIDsOfNames().
-
-Sat Jul 19 09:31:35 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Invoke): little refactoring.
-
-	* ext/win32ole/win32ole.c: add document of inspect methods.
-
-Sat Jul 19 06:08:43 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc*: Import RDoc r104.  Various make test-all fixes.
-
-Sat Jul 19 00:27:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (check_uint, rb_num2uint, rb_fix2uint): fixed wrong check
-	  about 64bit positive value.
-
-Fri Jul 18 23:23:37 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Invoke): avoid cfp consistency
-	  error when exception raised in event callback.
-
-Fri Jul 18 14:52:14 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (socklist): table for registering socket options
-	  (currently only O_NONBLOCK).
-
-	* win32/win32.c (StartSockets, exit_handler): alloc/free socklist.
-
-	* win32/win32.c (is_socket): use socklist.
-
-	* win32/win32.c (rb_w32_accept, rb_w32_socket, rb_w32_socketpair):
-	  register new socket to socklist.
-
-	* win32/win32.c (rb_w32_close): remove closing socket from socklist.
-
-	* win32/win32.c (fcntl): register socket options.
-
-	* win32/win32.c (overlapped_socket_io): send to/recv from socket with
-	  overlapped operation if the socket is not nonblocking mode.
-	  [experimental]
-
-	* win32/win32.c (rb_w32_send, rb_w32_sendto, rb_w32_recv,
-	  rb_w32_recvfrom): use overlapped_socket_io().
-
-	* win32/win32.c (open_ifs_socket): set overlapped mode. this is the
-	  default mode of winsock's socket(), so lacking it is an old bug.
-
-Fri Jul 18 09:44:30 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/*: Import RDoc r101.
-
-Thu Jul 17 23:45:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/rdoc/test_rdoc_c_parser.rb (teardown): close tempfile.
-
-Thu Jul 17 21:08:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_process.rb (test_getpriority, test_setpriority): use
-	  PRIO_PROCESS instead of PRIO_USER.
-
-Thu Jul 17 20:41:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* pack.c (pack_unpack): fix v and V with big endian.
-	  [1].pack("V").unpack("V") was [4294967296].
-
-Thu Jul 17 20:35:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* pack.c (pack_pack): fix i! with big endian.  [1].pack("i!") was
-	  "\0\0\0\0".
-
-Thu Jul 17 16:48:40 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect): select() for connect() has
-	  mean only when the socket is non-blocking.
-
-Thu Jul 17 10:55:24 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* mkconfig.rb: Simplify expression for RDoc.
-
-Thu Jul 17 10:21:15 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (check_uint, rb_num2uint, rb_fix2uint): strict check.
-	  fixed [ruby-dev:33683]
-
-Thu Jul 17 04:19:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): wake up joining threads.
-
-	* thread.c (sleep_forever, sleep_timeval): return when interrupted.
-	  [ruby-dev:35542]
-
-	* thread.c (timer_thread_function): restore main thread status.
-	  [ruby-core:17270]
-
-Thu Jul 17 01:27:38 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (appendline): remove invalid access.
-
-Wed Jul 16 18:04:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* signal.c (signal_exec, trap_handler): trap accepts a string as
-	  command.  [ruby-dev:35533]
-
-Wed Jul 16 00:04:30 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/envutil.rb (Test::Unit::Assertions#assert_in_out_err): new
-	  method.
-
-	* test/ruby/test_argf.rb: use assert_in_out_err instead of
-	  EnvUtil.rubyexec.
-
-	* test/ruby/test_module.rb: ditto.
-
-	* test/ruby/test_require.rb: ditto.
-
-	* test/ruby/test_objectspace.rb: ditto.
-
-	* test/ruby/test_object.rb: ditto.
-
-	* test/ruby/test_string.rb: ditto.
-
-	* test/ruby/test_method.rb: ditto.
-
-	* test/ruby/test_variable.rb: ditto.
-
-	* test/ruby/test_io.rb: ditto.
-
-	* test/ruby/test_rubyoptions.rb: ditto.
-
-	* test/ruby/test_exception.rb: ditto.
-
-	* test/ruby/test_class.rb: ditto.
-
-	* test/ruby/test_thread.rb: ditto.
-
-Tue Jul 15 22:34:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (ruby_version): follow changes in configure.in.
-
-Tue Jul 15 21:58:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/{,tkutil/}extconf.rb: ruby/ruby.h no longer needs to be
-	  checked.
-
-	* ext/tk/{tcltklib.c,tkutil/tkutil.c}: check macros for each headers.
-
-Tue Jul 15 21:45:41 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/tk/extconf.rb, ext/tk/tcltklib.c, ext/tk/tkutil/tkutil.c: Do
-	  not test ruby/ruby.h, which makes OS X's gcc pick the wrong
-	  header file from Ruby.framework.
-
-Tue Jul 15 21:31:26 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in (--with-ruby-version): Add a new option to specify
-	  the ruby version string for version specific directories.
-	  [ruby-dev:35490]
-
-	* mkconfig.rb: Definition of ruby_version is now determined by the
-	  configure script.
-
-Tue Jul 15 18:14:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (ruby_connect, s_accept): check before readable/
-	  writable by select() instead of wrapping in blocking region.
-
-	* ext/socket/socket.c (bsock_send, s_recvfrom, udp_send, unix_send_io,
-	  unix_recv_io): should check readable/writable before calling blocking
-	  functions.
-	  see [ruby-dev:35446]
-
-Tue Jul 15 18:12:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (ubf_handle): cancel blocking IO if it can (only
-	  Vista). see [ruby-dev:35446]
-
-	* win32/win32.c (errmap): add ERROR_OPERATION_ABORTED as EINTR.
-
-Mon Jul 14 20:35:21 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_event.rb (teardown): fix typo.
-
-Mon Jul 14 18:47:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_loop): constified.
-
-	* transcode.c (str_transcode): rb_str_set_len() sets a delimiter.
-
-	* transcode_data.h (rb_transcoder): constified preprocessor and
-	  postprocessor input.
-
-	* enc/trans/japanese.c: ditto.
-
-Sun Jul 13 05:37:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/ruby.h (PRI_PTRDIFF_PREFIX, PRI_SIZE_PREFIX): typo.
-
-	* {bcc32,win32}/Makefile.sub: (SIZEOF_SIZE_T, SIZEOF_PTRDIFF_T): added.
-
-Sat Jul 12 23:54:55 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (LIBRUBY_DLDFLAGS): import library which created
-	  with DLL is broken. save import library which created by lib.exe and
-	  install it.
-	  fixed the problem mentioned at the postscript of [ruby-dev:35448]
-
-Sat Jul 12 23:24:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c: use PRIuSIZE.
-
-Sat Jul 12 22:41:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (PRI_PTRDIFF_PREFIX, PRI_SIZE_PREFIX): fixed typo.
-
-Sat Jul 12 22:30:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (HAVE_RUBY_RUBY_H): defines macros so that
-	  extconf.rb do not need to check if headers exist under separated
-	  directory.  [ruby-dev:35437]
-
-	* include/{ruby,rubyio,rubysig}.h, include/ruby/intern.h: use
-	  "ruby/..." instead of <ruby/...>.
-
-Sat Jul 12 22:17:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (sizeof ptrdiff_t): check for size of ptrdiff_t.
-
-	* include/ruby/ruby.h (PRI?PTRDIFF, PRI?SIZE): printf conversion
-	  specifiers for ptrdiff_t and size_t/ssize_t.
-
-	* insns.def (leave), marshal.c (long_toobig), transcode.c
-	  (str_transcode), vm_dump.c (control_frame_dump, stack_dump_each),
-	  (debug_print_register, debug_print_pre): t and z length modifiers
-	  are C99.
-
-Sat Jul 12 16:02:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/xmlrpc/client.rb (XMLRPC::Client#do_rpc): requires
-	  webrick/cookie.  [ ruby-Bugs-21139 ]
-
-Sat Jul 12 09:25:07 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_event.rb: add test
-	  for WIN32OLE_EVENT#on_event_with_outargs
-
-	* test/win32ole/test_win32ole_event.rb(teardown): calling
-	  WIN32OLE_EVENT.message_loop
-
-Sat Jul 12 01:54:13 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_select): shouldn't pass non-socket handle to
-	  original select().
-
-Fri Jul 11 23:05:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/zlib/test_zlib.rb: add a test for Zlib::Deflate#params.
-
-Fri Jul 11 22:58:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/zlib/zlib.c (rb_deflate_params): flush before deflateParams.
-	  [ruby-core:17675]
-
-Fri Jul 11 22:09:01 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/setup.rb, win32/Makefile.sub (PLATFORM): use $(PLATFORM)
-	  instead of $(OS) because ENV["OS"] is used in test-all (drb).
-
-Fri Jul 11 20:51:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_wait_readable, rb_io_wait_writable): check if the file
-	  descriptor is closed.
-
-	* thread.c (rb_thread_wait_fd_rw): ditto.
-
-Fri Jul 11 16:16:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_accept, rb_w32_socket, rb_w32_socketpair):
-	  prohibit inheritance of sockets, too. [experimental]
-
-Fri Jul 11 14:39:49 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): the measures for Vista is no longer
-	  unnecessary.
-
-Fri Jul 11 06:16:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (process.o): depends on util.h.
-
-Fri Jul 11 05:07:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h (pipe): prohibit inheritance.
-	  fixed: [ruby-dev:35421]
-
-Fri Jul 11 00:56:46 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (thread_create_core): fix GC problem.
-	  [ruby-core:17669]
-
-Thu Jul 10 22:06:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/pstore.rb (PStore#transaction): return the result from the
-	  block.  [ruby-core:17718]
-
-Thu Jul 10 21:15:49 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_typelib.rb: add some illegal argument
-	  test.
-
-	* test/win32ole/test_win32ole_type.rb: ditto.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-	* test/win32ole/test_win32ole_param.rb: ditto.
-
-	* test/win32ole/test_win32ole_method.rb: ditto.
-
-Thu Jul 10 19:38:35 2008  wanabe  <s.wanabe@gmail.com>
-
-	* test/ruby/envutil.rb (assert_normal_exit): r17993 revert.
-
-Thu Jul 10 18:29:41 2008  wanabe  <s.wanabe@gmail.com>
-
-	* test/ruby/envutil.rb (assert_normal_exit): finish writing script
-	  before spawn("ruby") to avoid blocking in win32.
-
-Thu Jul 10 17:20:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (insert): follow recent changes of globbing.
-
-Thu Jul 10 14:09:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/coverage/coverage.c (rb_coverage_start): return nil.
-
-Thu Jul 10 12:41:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_wait_for): fixed variable name.
-
-Thu Jul 10 12:09:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_thread_t), vm.c (rb_thread_mark), process.c
-	  (rb_last_status_get, rb_last_status_set, rb_last_status_clear):
-	  moved last_status from rb_vm_t.  [ruby-dev:35414]
-
-	* vm.c (th_init2): initialize last_status with nil.
-
-Thu Jul 10 12:09:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_wait_for): wait until timed out only when
-	  sleeping with timeout.
-
-Wed Jul  9 22:41:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (sleep_timeval): wait until timed out.  [ruby-core:17270]
-
-Wed Jul  9 20:58:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* array.c (rb_ary_fill): don't raise even if length is negative.
-	  [ruby-core:17483], [ruby-core:17661]
-
-Wed Jul  9 20:18:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_va_args_macro): check for __VA_ARGS__.
-
-	* thread.c (thread_debug): show source name and line if possible.
-
-	* thread_{pthread,win32}.c (rb_thread_create_timer_thread): needs more
-	  stack for debug.
-
-Wed Jul  9 11:13:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/profiler.rb (Profiler__#print_profile): sort in the descending
-	  order of cumulative time.
-
-Wed Jul  9 11:11:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (struct glob_args, rb_glob_caller, rb_glob2, push_pattern),
-	  (glob_brace): make consistent prototypes.
-
-	* dir.c (push_glob): set enc in the caller of rb_glob_caller as well
-	  as rb_glob2.
-
-Wed Jul  9 09:12:11 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (options): use input_endian.
-
-Wed Jul  9 01:38:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ): alphabets or numerics mutually enclosing
-	  non-alphanumeric characters can carry up.  e.g., "1.999".succ should
-	  be "2.000".
-
-Wed Jul  9 00:12:31 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_set_coverages, rb_reset_coverages): enable and disable
-	  coverage measurement.
-
-	* thread.c (rb_get_coverages): rename and move from vm.c.
-
-	* vm.c (rb_vm_get_coverages): ditto.
-
-	* iseq.c (prepare_iseq_build): ditto.
-
-	* thread.c (clear_coverage): ditto.
-
-	* parse.y (coverage): ditto.
-
-	* ext/coverage/coverage.c: use above functions, add new method
-	  Coverage.start and fix rdoc .
-
-Tue Jul  8 23:02:35 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (find_default_source): bug fix when
-	  OLE object does not have default source interface.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Tue Jul  8 22:56:23 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (rb_enable_coverages): hide coverage array by setting 0 to
-	  klass during measurement.
-
-	* parse.y (coverage, yycompile0): ditto.
-
-	* iseq.c (prepare_iseq_build): use rb_hash_lookup instead of
-	  rb_hash_aref.
-
-	* thread.c (rb_coverage_result): restore klass of coverage array
-	  and return it.
-
-	* thread.c (update_coverage): check whether its klass is 0.
-
-Tue Jul  8 22:28:25 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* lib/debug.rb, lib/profile.rb: fix to use RubyVM.
-
-	* lib/rdoc/parsers/parse_c.rb: ditto.
-
-Tue Jul  8 21:45:22 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (rb_vm_mark): mark the last element of special_exceptions.
-
-Tue Jul  8 19:55:40 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (find_default_source): try to
-	  find COCLASS when WIN32OLE object is not COCLASS.
-
-	* test/win32ole/test_win32ole_event.rb: ditto
-
-Tue Jul  8 13:38:22 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.h: fix to skip inserting a trace insn.
-
-Tue Jul  8 11:41:17 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* dir.c: shouldn't use ruby object in globbing, because glob service
-	  routines are called before initializing ruby on some platforms (ex.
-	  windows).
-
-Tue Jul  8 10:08:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (Next): use rb_enc_mbclen. [ruby-dev:35390]
-
-Tue Jul  8 07:59:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (Next): use rb_enc_precise_mbclen.
-
-Tue Jul  8 02:27:23 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c: preserve encoding of strings in glob and fnmatch.
-
-	* include/ruby/ruby.h: related changes.
-
-Tue Jul  8 00:22:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ): limit carrying in an alphanumeric region if
-	  exists.  [ruby-dev:35094]
-
-Mon Jul  7 20:39:28 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c(Init_win32ole): add
-	  WIN32OLE_TYPE#source_ole_types, WIN32OLE_TYPE#default_ole_types,
-	  WIN32OLE_TYPE#default_event_sources.
-
-	* test/win32ole/test_win32ole_type.rb: ditto.
-
-Mon Jul  7 19:45:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_dir.rb (test_chroot_nodir): add Errno::EPERM.
-
-Mon Jul  7 17:12:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/ipaddr.rb (IPAddr#initialize): get rid of ArgumentError in
-	  IPAddr#to_range.  a patch from okkez <okkez000 AT gmail.com> in
-	  [ruby-dev:35091].
-
-Mon Jul  7 01:24:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_extname): fix for file name with spaces.
-	  [ruby-talk:307404]
-
-Mon Jul  7 00:59:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (ruby_init_stack): prior STACK_END_ADDRESS if
-	  found.  [ruby-core:17624]
-
-Sun Jul  6 23:48:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/socket.c (bsock_send, s_recvfrom, ruby_connect, s_accept),
-	  (udp_send, unix_send_io, unix_recv_io): blocking region support.
-
-Sun Jul  6 18:34:35 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_win32ole_type.rb (test_initialize): add
-	  more assertions.
-
-Sun Jul  6 10:12:21 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/test/unit/collector/objectspace.rb
-	  (Test::Unit::Collector::ObjectSpace::NAME): fix a typo.
-
-Sun Jul  6 00:56:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (host_str): fix type mismatch in rb_raise
-	  format and argument.
-	  (port_str): ditto.
-	  (unix_recv_io): ditto.
-	  (sock_s_unpack_sockaddr_un): ditto.
-
-Sat Jul  5 23:42:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (NUM2INT): cast to int.
-	  (FIX2INT): ditto.
-	  (NUM2UINT): cast to unsigned int.
-	  (FIX2UINT): ditto.
-
-Sat Jul  5 23:10:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_pipe): new function for handling EMFILE and ENFILE
-	  error of pipe().
-	  (UPDATE_MAXFD_PIPE): removed.
-	  (pipe_open): use rb_pipe.
-	  (rb_io_s_pipe): ditto.
-
-	* process.c (pipe_nocrash): use rb_pipe.
-
-	* include/ruby/intern.h (rb_pipe): declared.
-
-Sat Jul  5 22:22:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_initialize): NUM2INT() returns int.
-
-	* thread.c (timer_thread_function), thread_pthread.c (thread_timer),
-	  thread_win32.c (timer_thread_func), thread_{pthread,win32}.c
-	  (rb_thread_create_timer_thread): passing VM.
-
-Sat Jul  5 20:53:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* test/win32ole/test_word.rb: check word installed.
-
-Sat Jul  5 16:12:54 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c: revert. before lazy sweep.
-
-Sat Jul  5 09:55:44 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE#ole_respond_to?
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Sat Jul  5 08:48:05 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (unescape_nonascii): add has_property argument not to
-	  raise error by /\p{Hiragana}\u{3042}/ in EUC-JP script.
-	  (rb_reg_preprocess): use has_property argument to make regexp
-	  encoding fixed.
-
-Sat Jul  5 08:29:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (unescape_nonascii): make regexp fixed_encoding if \p is used.
-	  fixed [ruby-core:17279].
-
-Fri Jul  4 23:12:53 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (d2time): fix the bug of VT_DATE
-	  to String conversion when negative value.
-
-	* test/win32ole/test_win32ole_variant.rb: ditto.
-
-Fri Jul  4 22:15:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/test/unit/testcase.rb: collect descendants of
-	  Test::Unit::TestCase using inherited.
-
-	* lib/test/unit/autorunner.rb: don't use ObjectSpace.each_object.
-
-	* lib/test/unit/collector/dir.rb: ditto.
-
-	* lib/test/unit/collector/objectspace.rb: ditto.
-
-	[ruby-core:17126]
-
-Fri Jul  4 20:43:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (OnigEncoding): removed auxiliary_data.
-
-	* include/ruby/encoding.h (ENC_DUMMY_P): moved dummy encoding flag to
-	  rb_encoding from Encoding instance.
-
-	* encoding.c (rb_encoding_list): list of Encoding instances.
-
-	* encoding.c (struct rb_encoding_entry): moved base encoding from
-	  instance variable.
-
-Fri Jul  4 17:51:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (check_uint, rb_num2uint, rb_fix2uint): proper check.
-
-Fri Jul  4 14:17:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/net/ftp.rb (Net::FTP#sendport): use divmod.  [ruby-core:17557]
-
-Fri Jul  4 11:08:37 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (garbage_collect_force): sweep is completely ended.
-
-	* gc.c (os_obj_of): invoke garbage_collect_force() when freelist none.
-
-Fri Jul  4 05:01:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (rb_num2uint, rb_fix2uint): typo.
-
-Fri Jul  4 02:21:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (check_uint, rb_num2uint, rb_fix2uint): also needs checking
-	  negative value. see [ruby-dev:33683]
-
-Thu Jul  3 23:26:36 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* include/ruby/intern.h: remove prototypes about coverage.
-
-	* iseq.c (prepare_iseq_build): add prototype.
-
-	* parse.y (coverage): ditto.
-
-	* thread.c (clear_coverage): ditto.
-
-	* thread.c (update_coverage): use rb_sourceline.
-
-	* thread.c (rb_get_coverages): rename and move to vm.c.
-
-	* vm.c (rb_vm_get_coverages): ditto.
-
-	* ext/coverage/coverage.c: add rdoc.
-
-Thu Jul  3 21:51:21 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/coverage/coverage.c, ext/coverage/extconf.rb: eliminate
-	  COVERAGE__ and introduce coverage.so instead.  How to measure
-	  coverage: (1) require "coverage.so", (2) require or load Ruby source
-	  file, and (3) Coverage.result will return the same hash as COVERAGE__.
-	  [ruby-dev:35324]
-
-	* thread.c (rb_enable_coverages): start coverage measurement by using
-	  rb_add_event_hook.
-
-	* thread.c (rb_get_coverages): returns current results of coverage
-	  measurement.
-
-	* include/ruby/intern.h: add prototype for above two functions.
-
-	* vm_core.h, vm.c: add field of coverages to rb_vm_t.
-
-	* insns.def (trace): remove special handling for COVERAGE__.
-
-	* iseq.c (prepare_iseq_build): switch COVERAGE__ to
-	  rb_get_coverages().
-
-	* parse.y (coverage): ditto.
-
-	* thread.c (clear_coverage): ditto.
-
-	* lib/coverage.rb: use coverage.so instead of COVERAGE__.
-
-Thu Jul  3 21:20:45 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (thread_initialize): NUM2INT returns long.
-
-Thu Jul  3 21:06:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (Init_eval): typo fixed in r17833.
-
-Thu Jul  3 19:44:44 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (Init_win32ole): remove duplicate line.
-
-Thu Jul  3 16:08:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (erfc): erfc of glibc comes with Debian GNU/Linux Etch
-	  on IA64 is broken.  erfc(10000.0) aborts.
-	  use missing/erf.c instead.
-	  http://sources.redhat.com/ml/libc-hacker/2005-08/msg00008.html
-
-Thu Jul  3 12:49:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/smtp.rb (Net::SMTP::start): use 'localhost' instead of
-	  'localhost.localdomain'.  [ruby-dev:35333]
-
-	* lib/net/smtp.rb (Net::SMTP::SMTP.start): ditto.
-
-Thu Jul  3 07:06:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (SET_LC_MESSAGES): LC_MESSAGES must be C.
-
-Thu Jul  3 07:02:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (Init_eval), gc.c (Init_GC), proc.c (Init_Proc): freeze
-	  messages of preallocated special exceptions also.
-
-Thu Jul  3 04:39:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_during_gc): VALUE cache is irrelevant.
-
-Thu Jul  3 01:44:01 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regint.h (GET_ALIGNMENT_PAD_SIZE, ALIGNMENT_RIGHT): cast pointer to
-	  uintptr_t instead of unsigned int.
-
-Thu Jul  3 01:23:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* sprintf.c: include ieeefp.h to refer to isinf.
-
-	* ext/bigdecimal/bigdecimal.c: ditto.
-
-	* ext/json/ext/generator/generator.c: ditto.
-
-	* rational.c: ditto.
-
-Thu Jul  3 01:01:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* missing/tgamma.c (tgamma): remove unused variable.
-
-Thu Jul  3 00:18:00 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: avoid creating Ruby object during
-	  GC. thanks to arton <artonx AT yahoo.co.jp>. [ruby-dev:35313]
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Thu Jul  3 00:09:31 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* gc.c: add rb_during_gc(). based on a patch from arton <artonx AT
-	  yahoo.co.jp> at [ruby-dev:35313].
-
-	* include/ruby/intern.h: ditto.
-
-Wed Jul  2 09:49:10 2008  Narihiro Nakamura  <authorNari@gmail.com>
-
-	* gc.c (gc_lazy_sweep): use lazy sweep algorithm for response
-	  performance gain.
-
-	* gc.c (garbage_collect_force): mark and lazysweep invoke, after
-	  erasing all mark.
-
-	* gc.c (GC_NOT_LAZY_SWEEP): not lazy sweep flag. for debug.
-
-Wed Jul  2 03:42:44 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_settracefunc.rb: fix expected traces for
-	  RubyVM::FrozenCore's event and r17744.
-
-Wed Jul  2 03:10:41 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.h, insns.def: reduce insn operand of "trace".
-
-	* include/ruby/ruby.h: add RUBY_EVENT_COVERAGE event.
-
-Wed Jul  2 02:02:34 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c, vm.c: fix to refer to next ruby level cfp to make binding.
-
-Wed Jul  2 01:58:19 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* insns.def (trace): C99ism.
-
-Wed Jul  2 01:53:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* Add coverage measurement constant COVERAGE__.  This constant is not
-	  for casual use.  Usage: (1) assign {} to COVERAGE__, (2) require or
-	  load Ruby source file, and (3) COVERAGE__["sourcefilepath"] will
-	  return an array whose elements represent number of executions per
-	  line of source code.
-
-	* vm_core.h: add field of coverage array to iseq.
-
-	* iseq.c (prepare_iseq_build): ditto.
-
-	* insns.def (trace): update coverage array.
-
-	* parse.y (coverage): create and initialize coverage array.
-
-	* compile.h (ADD_TRACE): add trace instruction to update coverage
-	  array.
-
-	* thread.c (clear_coverage): delete coverage array when forking.
-	  Otherwise, double count of coverage may occur.
-
-	* lib/coverage.rb: sample coverage measurement tool.
-
-	* error.c: distinguish explicitly between parse_in_eval and
-	  mild_compile_error.
-
-	* load.c: ditto.
-
-	* vm_eval.c: ditto.
-
-Tue Jul  1 21:32:43 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/test/unit/ui/console/testrunner.rb: prevent destructive
-	  modification to $0.
-
-	* test/rubygems/gemutilities.rb (build_rake_in): move from
-	  test_gem_ext_rake_builder.rb.
-
-	* test/rubygems/test_gem_ext_rake_builder.rb: ditto.
-
-	* test/rubygems/test_gem_installer.rb: override Gem.ruby and
-	  ENV["rake"].
-
-	* test/rubygems/test_gem_uninstaller.rb: ditto.
-
-Tue Jul  1 21:13:17 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, vm.c, insns.def: call FrozenCore.set_postexe method
-	  instead to use "postexe" insn.
-
-	* id.c, id.h: add a prepared id for above.
-
-Tue Jul  1 21:09:58 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/mkmf.rb (create_tmpsrc): we need to include COMMON_HEADERS,
-	  namely inclusion of ruby.h, because _GNU_SOURCE is now defined
-	  there (if any) and socket.so requires it on Linux systems.
-
-Tue Jul  1 20:55:07 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* eval.c (rb_interrupt): trick to suppress GCC warning.
-
-	* sprintf.c (rb_str_format): ditto.
-
-Tue Jul  1 20:44:36 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/instruction.rb: RubyVM is not module.
-
-Tue Jul  1 19:31:24 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* ext/digest/digest.c (rb_digest_instance_inspect): constified.
-
-	* variable.c (rb_path2class): field precision should have type int.
-
-Tue Jul  1 19:01:00 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/shift_jis.c (code_is_ctype): HALF WIDTH KATAKANA is
-	  a character.
-
-Tue Jul  1 17:56:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* missing/vsnprintf.c (BSD__uqtoa): constified.
-
-Tue Jul  1 17:50:44 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/make_encdb.h: always add ';' at the end of line.
-
-Tue Jul  1 17:44:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (COMPILE_OPTION_FALSE), time.c (timegm_noleapsecond),
-	  thread.c (eKillSignal, eTerminateSignal),
-	  missing/vsnprintf.c (BSD_vfprintf): constified.
-
-Tue Jul  1 17:37:43 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* enc/ascii.c: ISO C does not allow extra ';' outside of a
-	  function
-
-	* enc/us_ascii.c: ditto.
-
-	* enc/utf_8.c: ditto.
-
-	* enc/big5.c: ditto.
-
-	* enc/euc_jp.c: ditto.
-
-	* enc/euc_kr.c: ditto.
-
-	* enc/euc_tw.c: ditto.
-
-	* enc/gb2312.c: ditto.
-
-	* enc/gbk.c: ditto.
-
-	* enc/iso_8859_1.c: ditto.
-
-	* enc/iso_8859_2.c: ditto.
-
-	* enc/iso_8859_3.c: ditto.
-
-	* enc/iso_8859_4.c: ditto.
-
-	* enc/iso_8859_5.c: ditto.
-
-	* enc/iso_8859_6.c: ditto.
-
-	* enc/iso_8859_7.c: ditto.
-
-	* enc/iso_8859_8.c: ditto.
-
-	* enc/iso_8859_9.c: ditto.
-
-	* enc/iso_8859_10.c: ditto.
-
-	* enc/iso_8859_11.c: ditto.
-
-	* enc/iso_8859_13.c: ditto.
-
-	* enc/iso_8859_14.c: ditto.
-
-	* enc/iso_8859_15.c: ditto.
-
-	* enc/iso_8859_16.c: ditto.
-
-	* enc/koi8_r.c: ditto.
-
-	* enc/shift_jis.c: ditto.
-
-	* enc/utf_16be.c: ditto.
-
-	* enc/utf_32be.c: ditto.
-
-	* enc/utf_32le.c: ditto.
-
-	* enc/windows_1251.c: ditto.
-
-	* process.c (run_exec_rlimit): ISO C90 forbids mixed declarations
-	  and code
-
-	* include/ruby/ruby.h (enum ruby_special_consts): ISO C forbids
-	  comma at end of enumerator list
-
-	* include/ruby/ruby.h (enum ruby_value_type): ditto.
-
-	* eval_intern.h (enum): ditto.
-
-	* vm_core.h (enum rb_thread_status): ditto.
-
-	* parse.y (enum lex_state_e): ditto.
-
-	* parse.y (enum string_type): ditto.
-
-	* process.c (enum): ditto.
-
-	* ruby.c (enum dump_flag_bits): ditto.
-
-	* ruby.c (enum disable_flag_bits): ditto.
-
-	* enc/gb18030.c (enum): ditto.
-
-Tue Jul  1 17:21:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regexec.c (stack_double): use MatchStackLimitSize atomically.
-
-	* regparse.c (onig_free_shared_cclass_table): OnigTypeCClassTable
-	  needs atomicity
-
-	* regsyntax.c: constified all predefined OnigSyntaxTypes.
-
-Tue Jul  1 16:57:44 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* include/ruby/st.h (struct st_table): type of bit-field
-	  'num_entries' is a GCC extension
-
-	* include/ruby/ruby.h (rb_intern): prefix __extension__ for
-	  braced-groups within expressions.
-
-	* include/ruby/intern.h (rb_usascii_str_new2): ditto.
-
-	* include/ruby/intern.h (rb_tainted_str_new2): ditto.
-
-	* include/ruby/intern.h (rb_str_new2): ditto.
-
-Tue Jul  1 15:01:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rubygems/ext/builder.rb (Gem::Ext::Builder.make),
-	  (Gem::Ext::Builder.run): EXIT_SUCCESS may be 0 or may not.
-
-	* test/rubygems/test_gem_ext_rake_builder.rb (build_rake_in): override
-	  Gem.ruby and ENV["rake"].
-
-	* runruby.rb: bin/rake does not exist in archdir where architecture
-	  depend script (i.e. rbconfig.rb) exists.
-
-Tue Jul  1 13:19:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_fill): check if beg is too big.
-
-Tue Jul  1 12:01:16 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, insns.def, vm.c, vm_core.h: remove some insns
-	  (undef, alias, definemethod).
-	  Call RubyVM::FrozenCore's singleton method instead.
-	  Add "putiseq" and "putspecialobject" instructions.
-
-	* id.c, id.h: add ids for above.
-
-	* tool/parse.rb: "VM" no longer exists.  Use RubyVM instead.
-
-Tue Jul  1 03:28:16 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* test/rubygems/test_ext_configure_builder.rb:  Apply locale-free
-	  patch by Yusuke ENDOH.  [ruby-core:17444].
-
-	* runruby.rb: Set ENV['rake'].  Patch by Yusuke ENDOH
-	  [ruby-core:17442].
-
-Tue Jul  1 01:07:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension.read_multipart): blanks inside
-	  double quotes are allowed.  [ruby-list:45140]
-
-Tue Jul  1 00:59:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c (num_coerce): call rb_Float(x) first.  don't depend on
-	  evaluation order of function arguments.
-
-Tue Jul  1 00:49:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_newobj): abort GC phase before rb_bug.
-
-Mon Jun 30 23:15:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/openssl/test_ssl.rb (start_server): shutdown TCPServer before
-	  close.
-
-Mon Jun 30 23:01:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (RUBY_H_INCLUDES): common headers which are included with
-	  ruby.h together.
-
-Mon Jun 30 22:57:50 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_settracefunc.rb (test_raise): reveal an exception
-	  hided by rescue modifier.
-
-Mon Jun 30 22:49:32 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb (test_aset): access with too big index
-	  raises not ArgumentError but IndexError now.
-
-Mon Jun 30 22:30:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb (recursive_collect): r15662 reverted.
-
-Mon Jun 30 22:27:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/stringio/stringio.c (strio_getline): fix for nil and "" as
-	  separator.  [ruby-dev:34591]
-
-Mon Jun 30 22:21:30 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (argf_each_line): pass args to each_line. [ruby-dev:34958]
-
-Mon Jun 30 22:12:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (chain_finalized_object): should not delete from finalizer
-	  table until run.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): deferred_final_list may be
-	  empty first.
-
-Mon Jun 30 18:57:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (gc_finalize_deferred): allow object allocation in finalizers.
-
-	* gc.c (rb_gc_call_finalizer_at_exit): ditto.
-
-Mon Jun 30 14:41:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (rb_newobj): prohibit call of rb_newobj() during gc when
-	  USE_VALUE_CACHE is not defined (normal case).
-
-Mon Jun 30 10:28:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syslog/syslog.c (syslog_write): syslog operations should be
-	  protected from $SAFE level 4.  a patch from Keita Yamaguchi
-	  <keita.yamaguchi at gmail.com>.
-
-	* ext/syslog/syslog.c (mSyslog_close): ditto.
-
-	* ext/syslog/syslog.c (mSyslog_set_mask): ditto.
-
-Mon Jun 30 03:01:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/net/http/test_http.rb (_test_request__file): specify encoding
-	  explicitly.
-
-	* test/net/http/utils.rb: ditto.
-
-Mon Jun 30 02:31:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_utf8_encindex): defined.
-
-	* include/ruby/encoding.h (rb_utf8_encindex): ditto.
-
-Mon Jun 30 02:14:34 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_core.h,vm_core.h, vm_dump.c, iseq.c: rename class name
-	  VM -> RubyVM, and rename rb_cVM -> rb_cRubyVM.
-	  "VM" is too short name for class.
-
-	* test/ruby/test_method.rb, test/ruby/test_settracefunc.rb: ditto.
-
-	* include/ruby/ruby.h: rb_cRubyVM, rb_cEnv, rb_cISeq should not be
-	  exposed.
-
-Mon Jun 30 02:10:32 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* process.c (Init_process): fix to avoid a warning.
-
-Mon Jun 30 01:52:05 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_parse.rb: remove tests for open_args.
-
-Sun Jun 29 23:01:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_format_m): make tmp volatile to avoid possible GC
-	  problem.
-
-Sun Jun 29 18:01:30 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb, lib/rss/utils.rb: merge documents from ruby_1_8.
-
-Sun Jun 29 17:44:23 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/parser.rb (RSS::ListenerMixin#known_class): define to
-	  work with ruby 1.8.x too.
-
-Sun Jun 29 17:41:42 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb (RSS::Maker::RSSBase#to_feed): raise
-	  exception not return nil if RSS::Maker.make can't get required
-	  information.
-
-	* test/rss/rss-assertions.rb: follow the above change.
-
-Sun Jun 29 17:37:23 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb (RSS::Maker::RSSBase#make): require block.
-
-	* test/rss/test_maker_{0.9,1.0,2.0}.rb: follow the above change.
-
-Sun Jun 29 17:33:34 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/maker/base.rb, lib/rss/maker/itunes.rb: don't use
-	  instance_eval to initialize variables. (speed up)
-
-Sun Jun 29 17:31:15 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, test/rss/test_version.rb (RSS::VERSION):
-	  0.2.4 -> 0.2.5.
-
-Sun Jun 29 11:36:20 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* dir.rb: fix resource leak.
-
-Sun Jun 29 09:43:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tmpdir.rb (@@systmpdir): prior LOCAL_APPDATA if possible, and
-	  should be clean.  based on a patch from arton <artonx AT
-	  yahoo.co.jp> at [ruby-dev:35269]
-
-Sun Jun 29 07:53:08 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (date2time_str): fix the overflow in
-	  some situation. [ruby-bugs-20793]
-
-Sat Jun 28 21:25:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (struct RRegexp): new field usecnt.  replace
-	  str and len by src.
-
-	* gc.c (gc_mark_children): mark src field of regexp.
-	  (obj_free): don't free str field.
-
-	* re.c (REG_BUSY): removed.
-	  (rb_reg_initialize): prohibit re-initialize regexp.
-	  (rb_reg_search): use usecnt to prevent freeing regexp currently
-	  using.  this prevents SEGV by:
-	    r = /\A((a.)*(a.)*)*b/
-	    r =~ "ab" + "\xc2\xa1".force_encoding("euc-jp")
-	    t = Thread.new { r =~ "ab"*8 + "\xc2\xa1".force_encoding("utf-8")}
-	    sleep 0.2
-	    r =~ "ab"*8 + "\xc2\xa1".force_encoding("euc-jp")
-
-Sat Jun 28 21:15:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_new2, rb_tainted_str_new2,
-	  rb_usascii_str_new2): use inline versions only for constant
-	  literals.
-
-Sat Jun 28 13:12:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/rubygems/test_gem.rb (test_self_path_APPLE_GEM_HOME): don't use
-	  fixed /tmp/apple_gem_home directory.
-
-Sat Jun 28 08:40:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: check String encoding when
-	  converting String to VT_BSTR in OLE.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Sat Jun 28 01:08:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_timespec): fix rounding negative float.
-
-Fri Jun 27 21:38:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* struct.c: __size__ removed.  use the length of __members__ instead.
-	  (num_members): new function.
-
-Fri Jun 27 21:19:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/inlinetest.rb (InlineTest.in_progname): workaround for frozen
-	  $0.  [ruby-dev:35261]
-
-	* lib/test/unit/ui/console/testrunner.rb (TestRunner#finished): ditto.
-
-Fri Jun 27 17:45:17 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/erb.rb: adjust line number for magic comment.
-
-	* test/erb/test_erb.rb: add tests for def_method.
-
-Fri Jun 27 14:29:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): empty not should call '!' on nil.
-	  cf [ruby-dev:35227]
-
-Fri Jun 27 14:25:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_eval_body): if thrown exception is frozen, reraise it to
-	  create a new instance.
-
-Fri Jun 27 13:29:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_new2, rb_tainted_str_new2,
-	  rb_usascii_str_new2): use with-length versions with strlen to
-	  optimize strlen, if optimized.
-
-Fri Jun 27 12:28:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/un.rb (mkmf): new command to create makefile.
-
-Fri Jun 27 11:06:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/un.rb (wait_writable): added help message.
-
-Fri Jun 27 06:52:54 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* configure.in: need a ",".
-
-	* process.c (rb_fork): check CANNOT_FORK_WITH_PTHREAD macro.
-
-Fri Jun 27 06:50:56 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_eval.c (vm_call_super): fix to call method_missing.
-	  [ruby-core:15719], [ruby-core:17340]
-
-Fri Jun 27 00:00:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (set_arg0, ruby_prog_init): freeze $0.  a patch from Keita
-	  Yamaguchi <keita.yamaguchi at gmail.com>.
-
-Thu Jun 26 23:58:29 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (rb_str_index_m, rb_str_rindex_m, rb_str_include): fix
-	  rdoc.
-
-Thu Jun 26 17:43:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_f_trace_var): should not be allowed at safe level 4.
-	  a patch from Keita Yamaguchi <keita.yamaguchi at gmail.com>.
-
-Thu Jun 26 11:04:30 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems: Update to RubyGems 1.2.0 r1824.  Incorporates patch by
-	  Yusuke ENDOH [ruby-core:17353].
-
-Thu Jun 26 00:48:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): not operand might be empty.  [ruby-dev:35227]
-
-Wed Jun 25 21:54:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (primary): make functional-style not operator to act
-	  like function.  see <http://d.hatena.ne.jp/ku-ma-me/20080624/p1>.
-
-Wed Jun 25 15:28:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_fill): not depend on unspecified behavior at integer
-	  overflow.  reported by Vincenzo Iozzo <snagg AT openssl.it>.
-
-Wed Jun 25 13:42:44 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/erb.rb (ERB::Compiler:Buffer#new): push magic comment first.
-
-	* lib/erb.rb (ERB::Compiler#compile): fix for broken input.
-
-Wed Jun 25 12:10:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/erb.rb (ERB::Compiler#compile): magic comment needs LF.
-
-Wed Jun 25 09:31:11 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/erb.rb (ERB::Compiler#compile): output magic comment.
-
-Tue Jun 24 22:14:36 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_eval.c (eval_string_with_cref): preserve parse_in_eval even if
-	  exception raised.
-
-Tue Jun 24 22:09:18 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c(ole_invoke): fix memory leak.
-	  [ruby-bugs-20792]
-
-Tue Jun 24 17:20:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_fork_with_pthread): check after check for
-	  pthread library, and define the macro when checked only.
-
-Tue Jun 24 17:04:39 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/io/wait/extconf.rb: check sys/socket.h for cygwin.
-
-Tue Jun 24 16:51:51 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_reopen): remove cygwin handling because it seems to be for
-	  C's stdio.
-	  fixed [ruby-dev:35183]
-
-Tue Jun 24 11:12:33 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h, win32/win32.c (rb_w32_getppid): now support
-	  getppid() on win32 (but only Win2k or later).
-
-	* process.c (get_ppid): remove win32 special logic.
-
-Tue Jun 24 09:40:47 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/socket/socket.c (init_sock): socket is binmode on platforms
-	  which support binmode.
-
-Tue Jun 24 00:21:53 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_build_from_ary): initialize arg_opts, a patch from
-	  Adam Strzelecki <ono at java.pl> in [ruby-core:17220].
-
-Tue Jun 24 00:10:53 2008  wanabe  <s.wanabe@gmail.com>
-
-	* compile.c (iseq_build_from_ary): fix expression to obtain
-	  iseq->local_size and iseq->local_table_size.  [ruby-dev:35205]
-
-Mon Jun 23 11:31:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mathn.rb (Rational::power2): removed incomplete method.
-	  see [ruby-dev:35195].   [ruby-core:17293]
-
-Sun Jun 22 14:16:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/extconf.rb (have_readline_func): readline on Mac OS X
-	  needs headers to detect some functions.
-
-Sun Jun 22 09:51:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_class_superclass): rdoc improvement, a patch from
-	  Gaston Ramos <ramos.gaston AT gmail.com> in [ruby-core:17371].
-
-Sun Jun 22 09:22:32 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* README.EXT: translated README.EXT.ja
-
-Sun Jun 22 00:42:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_osid, rb_w32_osver, CreateChild): XP is
-	  is different from Vista about pipe handle inheritance.
-	  fixed [ruby-core:17367], reported by Lars Christensen <larsch at
-	  belunktum.dk>
-
-Sun Jun 22 00:38:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* README.EXT.ja: add note about mark and free.
-
-Sun Jun 22 00:01:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_io_binmode_p, argf_binmode_p, Init_IO): new method
-	  IO#binmode? and ARGF.binmode?  [ruby-dev:35148]
-
-Sat Jun 21 17:33:50 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_spawn): no longer support P_WAIT.
-
-Sat Jun 21 16:46:09 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (native_sleep): must block reentrance when accessing
-	  th->unblock.
-	  fixed [ruby-core:17341], reported by Bill Kelly <billk at cts.com>
-
-Sat Jun 21 16:29:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (call_args2, open_args): removed.
-
-	* parse.y (parser_yylex): unified warnings at space between method
-	  name and argument parenthesis.  [ruby-dev:33943]
-
-Sat Jun 21 16:21:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_round): get rid of overflow.
-
-Sat Jun 21 15:57:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/parsers/parse_rb.rb (RDoc#collect_first_comment): skip
-	  magic comment.
-
-Sat Jun 21 15:54:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check if fork works with pthread.
-
-Sat Jun 21 15:31:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: ported to ruby.
-
-	* tool/make-snapshot: fixed digests.
-
-Sat Jun 21 04:36:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/bigdecimal/lib/bigdecimal/jacobian.rb (Jacobian::dfdxi):
-	  typo fixed (raize -> raise).  [ruby-list:45101]
-
-	* enumerator.c (enum_each_cons): typo in RDoc fixed.
-
-Sat Jun 21 00:45:34 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* tool/make-snapshot: do not use sha256sum; use BASERUBY instead
-
-	* common.mk (dist): use tool/make-snapshot instead
-
-Fri Jun 20 16:34:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (Init_process): Process::Status#to_int removed.
-	  (PST2INT): defined.
-	  (pst_to_s): use PST2INT.
-	  (pst_inspect): ditto.
-	  (pst_equal): ditto.
-	  (pst_bitand): ditto.
-	  (pst_rshift): ditto.
-	  (pst_wifstopped): ditto.
-	  (pst_wstopsig): ditto.
-	  (pst_wifsignaled): ditto.
-	  (pst_wtermsig): ditto.
-	  (pst_wifexited): ditto.
-	  (pst_wexitstatus): ditto.
-	  (pst_success_p): ditto.
-	  (pst_wcoredump): ditto.
-	  (rb_f_system): ditto.
-
-Fri Jun 20 15:40:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_store, rb_ary_splice): not depend on unspecified
-	  behavior at integer overflow.
-
-	* string.c (str_buf_cat): ditto.
-
-Fri Jun 20 12:39:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_detach_process): store detached process ID in the
-	  thread local storage.  moved from lib/open3.rb.
-
-Fri Jun 20 11:57:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_sub_bang): should preserve replacement points
-	  since they may be altered in the yielded block.
-
-Fri Jun 20 11:07:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_memhash): randomize hash to avoid algorithmic
-	  complexity attacks.
-	  (rb_str_hash): use rb_memhash.
-
-	* include/ruby/intern.h (rb_reset_random_seed): declared.
-
-	* thread.c (rb_thread_atfork): call rb_reset_random_seed.
-
-	* inits.c (rb_call_inits): call Init_RandomSeed at first.
-
-	* random.c (seed_initialized): defined.
-	  (fill_random_seed): extracted from random_seed.
-	  (make_seed_value): extracted from random_seed.
-	  (rb_f_rand): initialize random seed at first.
-	  (initial_seed): defined.
-	  (Init_RandomSeed): defined.
-	  (Init_RandomSeed2): defined.
-	  (rb_reset_random_seed): defined.
-	  (Init_Random): call Init_RandomSeed2.
-
-Wed Jun 18 21:52:38 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* array.c (ary_new, rb_ary_initialize, rb_ary_store,
-	  rb_ary_splice, rb_ary_times): integer overflows should be
-	  checked. based on patches from Drew Yao <ayao at apple.com>
-	  fixed CVE-2008-2726
-
-	* string.c (rb_enc_cr_str_buf_cat): fixed unsafe use of alloca,
-	  which led memory corruption. based on a patch from Drew Yao
-	  <ayao at apple.com> fixed CVE-2008-2726
-
-Fri Jun 20 03:26:00 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_f_fork): NetBSD 4.0 or later can fork.
-
-Fri Jun 20 03:19:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/testunit/collector/test_dir.rb: r15825 made it unnecessary to
-	  change String to Symbol.
-
-	* test/testunit/collector/test_objectspace.rb: ditto.
-
-Fri Jun 20 03:14:31 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*, test/rubygems/*:  Update to RubyGems 1.1.1 r1784 (pre
-	  1.2).
-
-Fri Jun 20 03:01:59 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c: try to remove false positive of deadlock detection (second
-	  trial).
-
-Fri Jun 20 02:16:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mathn.rb (Rational::power2): typo fixed.  [ruby-core:17293]
-
-Fri Jun 20 02:11:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): should preserve last successful match
-	  data.  [ruby-dev:35182]
-
-Fri Jun 20 01:07:28 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* KNOWNBUGS.rb, bootstraptest/pending.rb: move a bug (?) to pending.
-
-Fri Jun 20 00:40:08 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (proc_new): fix to return Proc object if block is already
-	  in heap.  [ruby-core:15711]
-
-	* bootstraptest/test_proc.rb: add a test.
-
-Fri Jun 20 00:18:04 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_win32.c (native_sleep): fix to decrement sleeper count.
-
-Thu Jun 19 23:48:45 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/net/http/test_http.rb: compare encodings of two strings before
-	  comparing themself, which suppress too big error output.
-
-Thu Jun 19 23:46:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/json/ext/parser/parser.rl, ext/json/ext/parser/parser.c: JSON
-	  text SHALL be encoded in Unicode.
-
-Thu Jun 19 23:17:56 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c, thread_win32.c, vm_core.h: try to remove false positive of
-	  deadlock detection.
-
-Thu Jun 19 21:38:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extmake): check if compile before showing message.
-
-Thu Jun 19 21:35:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: supported multiple snapshots.
-
-Thu Jun 19 20:37:00 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/net/pop.rb (Net::POP3#set_all_uids): speed
-	  up. a patch from <m-sumi AT techfirm.co.jp> [ruby-list:45047]
-
-Thu Jun 19 17:44:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/etc/etc.c (Init_etc): define constant aliases Etc::Passwd
-	  and Etc::Group.  [ruby-dev:35150]
-
-Thu Jun 19 17:37:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_alloc): specify 'inline' modifier.
-
-	* string.c (str_alloc): remove cSymbol hack that no longer
-	  necessary.
-
-	* string.c (scan_once): avoid retrieving encoding info unless
-	  necessary.
-
-Thu Jun 19 17:19:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_scan): String#scan should preserve last
-	  successful match data.  [ruby-dev:35106]
-
-Thu Jun 19 16:49:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* missing/acosh.c (atanh): should set ERANGE to errno if parameter
-	  is the boundary case. fixed [ruby-dev:35155]
-
-Thu Jun 19 16:06:01 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tkextlib/tile/treeview.rb: cannot configure tags.
-
-Thu Jun 19 11:48:33 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_enumerator.rb: fix to skip "with_memo" test.
-
-Thu Jun 19 11:40:55 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_throw): fix "return" process from "lambda".
-
-	* bootstraptest/test_proc.rb: add a test.
-
-	* bootstraptest/pending.rb: add a pending bug.
-
-Thu Jun 19 00:33:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb: avoid infinite loop.  [ruby-dev:35158]
-
-Wed Jun 18 23:07:19 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* gc.c (rb_newobj): prohibit call of rb_newobj() during gc.
-	  a patch from Sylvain Joyeux in [ruby-core:12099].
-
-Wed Jun 18 21:08:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (verbose_setter, opt_W_getter): fixed prototypes.
-
-Wed Jun 18 19:20:00 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (opt_W_getter): use ruby_verbose directly instead of parameter
-	  because ruby_verbose is not a real variable, so the address of
-	  parameter is not collect.
-
-Wed Jun 18 18:31:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (errmap): add some pipe errors.
-
-	* win32/win32.c (rb_w32_write): set errno when CRT's errno is EINVAL
-	  for pipe errors.
-
-Wed Jun 18 18:09:08 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (poll_child_status): set EINVAL to errno when
-	  GetExitCodeProcess() fails with ERROR_INVALID_HANDLE.
-
-Wed Jun 18 15:01:18 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_open_file): fs_encoding and fname_encoding is
-	  rb_encoding *.
-	  fixed [ruby-dev:35151]
-
-Wed Jun 18 14:30:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_open_file): not rb_enc_get_index but rb_enc_get.
-
-Wed Jun 18 13:49:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h (pipe): now pipe is textmode. although this
-	  change is experimental, it will be spec if no compatibility problem
-	  is reported.
-
-Wed Jun 18 12:05:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_object, marshal_dump, r_object0, marshal_load): search
-	  public methods only.  [ruby-core:17283]
-
-	* object.c (convert_type): ditto.
-
-	* lib/singleton.rb (Singleton#_dump): conversion method should be
-	  public.
-
-Wed Jun 18 10:18:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_passwd, etc_group): fixed rdoc.  a patch from
-	  okkez <okkez000 AT gmail.com> in [ruby-dev:35141].
-
-Wed Jun 18 08:58:16 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/*:  Fix errors for 1.9.
-
-	* gem_prelude.rb:  Only remove methods from gem_prelude.rb when
-	  loading real RubyGems.
-
-Wed Jun 18 07:03:30 2008  Eric Hodel  <drbrain@egment7.net>
-
-	* lib/rubygems/*:  Update to RubyGems r1778 (pre 1.2).
-
-Wed Jun 18 04:27:58 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* KNOWNBUGS.rb, bootstraptest/pending.rb: move pending bug.
-
-Wed Jun 18 04:24:20 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_insnhelper.c: fix escape process with "break" and "return"
-	  syntax in "lambda".  [ ruby-Bugs-19304 ], [ruby-core:17164]
-
-	* KNOWNBUGS.rb, bootstraptest/test_proc.rb: add/move solved test.
-
-Wed Jun 18 01:51:10 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/multi-tk.rb: cannot access class variable from
-	  singleton method.
-
-Wed Jun 18 00:03:33 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* dir.c (Init_Dir): dir_foreach() takes variable argument.
-
-Tue Jun 17 23:04:24 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb:  Fixing Telnet#wairfor() which was broken by
-	  changes to the Kernel::Integer() method.  [ruby-core:17272]
-
-Tue Jun 17 23:02:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (opt_W_getter): made a hooked variable.
-
-Tue Jun 17 22:04:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enc/euc_jp.c (property_name_to_ctype): core dumped when sizeof(int)
-	  differs from sizeof(long).  [ruby-dev:35131]
-
-	* enc/shift_jis.c (property_name_to_ctype): ditto.
-
-	* enc/unicode.c (onigenc_unicode_property_name_to_ctype): ditto.
-
-Tue Jun 17 20:32:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (miniruby$(EXEEXT)): $(PREP) isn't always same as
-	  miniruby, and tests, debug, etc have no meaning when
-	  cross-compiling.
-
-Tue Jun 17 18:39:11 2008  Ryan Davis  <ryand-ruby@zenspider.com>
-
-	* common.mk: fixed dependencies on miniruby.
-
-Tue Jun 17 18:11:01 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h (pipe): expand pipe buffer size.
-
-Tue Jun 17 17:07:35 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (CreateChild): no need to inherit handles here because
-	  spawn'ed child cannot detect that STDIN is closed.
-
-Tue Jun 17 06:32:55 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dir.c (dir_data): add intenc and extenc.
-
-	* dir.c (dir_s_alloc): ditto.
-
-	* dir.c (dir_initialize): now accept internal_encoding and
-	  external_encoding.
-
-	* dir.c (dir_s_open): changed for dir_initialize.
-
-	* dir.c (dir_open_dir): ditto.
-
-	* dir.c (dir_foreach): changed for dir_open_dir.
-
-	* dir.c (dir_entries): changed for dir_open_dir.
-
-	* dir.c (dir_enc_str): defined.
-
-	* dir.c (dir_path): use dir_enc_str.
-
-	* dir.c (dir_read): ditto.
-
-	* dir.c (dir_each): ditto.
-
-Tue Jun 17 06:28:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_set_encoding): defined.
-
-	* io.c (rb_open_file): convert path on Windows and Mac OS X.
-
-	* io.c (open_key_args): use io_set_encoding and now accept
-	  internal_encoding and external_encoding.
-
-Tue Jun 17 06:26:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_filesystem_encoding): defined.
-
-	* include/ruby/encoding.h (rb_filesystem_encoding): added.
-
-Tue Jun 17 06:24:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/syck/rubyext.c: add encoding header.
-
-Tue Jun 17 01:52:50 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: SEGV when exit.
-
-	* ext/tk/lib/tk.rb: add a check for safety to Tk.exit.
-
-	* ext/tk/sample/irbtkw.rbw: freezes when receives SIGINT.
-
-Mon Jun 16 21:58:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_each, strio_readlines): IO#each and
-	  IO#readlines do not affect $_.  [ruby-core:17277]
-
-Mon Jun 16 18:52:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/thwait.rb (ThreadsWait): Exception2MessageMapper no longer has
-	  extend_to method.  [ruby-core:17267]
-
-Mon Jun 16 14:46:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/e2mmap.rb (E2MM.def_e2message): typo.
-
-Mon Jun 16 09:43:27 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_with_object, Init_Enumerator):
-	  Temporarily back out with_memo, for which we need a better name.
-
-Mon Jun 16 07:14:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_readline, strio_each)
-	  (strio_readlines): set lastline.  [ruby-core:17257]
-
-Mon Jun 16 01:49:39 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_f_block_given_p): fix to skip class frame.
-	  [ruby-core:14813]
-
-	* KNOWNBUGS.rb, bootstraptest/test_method.rb: move solved test.
-
-Mon Jun 16 01:48:08 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_dump.c (vm_stack_dump_raw): disable verbose debug output.
-
-Mon Jun 16 01:33:08 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h, thread.c: rename global_interpreter_lock to
-	  global_vm_lock.
-
-Sun Jun 15 18:40:35 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/syck/rubyext.c (yaml_org_handler): associate encoding.
-
-	* ext/syck/rubyext.c (syck_genericresolver_node_import): ditto.
-
-Sun Jun 15 18:17:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_vm_t), vm.c (rb_vm_mark): moved preallocated special
-	  exceptions.
-
-	* eval.c (Init_eval), gc.c (Init_GC), proc.c (Init_Proc): freeze
-	  preallocated special exceptions.
-
-	* eval.c (rb_longjmp): duplicate the thrown exception to set backtrace
-	  if it was frozen.
-
-	* gc.c (rb_memerror): raise nomem_error without backtrace if failed to
-	  make backtrace.
-
-Sat Jun 14 22:52:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_sysread): should not raise at empty
-	  read.  a patch from Arthur Schreiber at [ruby-core:17245].
-
-Sat Jun 14 16:55:46 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): no need to expand root path which has no
-	  short file name.  [ruby-dev:35095]
-
-Sat Jun 14 11:59:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.h (STACK_UPPER): moved from gc.c
-
-	* thread.c, thread_{pthread,win32}.c (ruby_init_stack,
-	  ruby_thread_init_stack): moved stack initialization from gc.c.
-
-Sat Jun 14 11:57:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.h (STACK_UPPER): moved from gc.c
-
-	* thread.c, thread_{pthread,win32}.c (ruby_init_stack,
-	  ruby_thread_init_stack): moved stack initialization from gc.c.
-
-Sat Jun 14 07:52:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (ruby_initial_gc_stress): defined.
-	  (ruby_initial_gc_stress_ptr): defined.
-
-	* debug.c (set_debug_option): use ruby_initial_gc_stress_ptr for
-	  gc_stress option.
-
-Sat Jun 14 00:09:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (ruby_gc_stress): moved to rb_objspace_t.
-
-	* gc.c (gc_stress_get, gc_stress_set): VM local attribute.
-
-	* signal.c (sigsegv): ditto.
-
-Fri Jun 13 21:55:48 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_equal_p): Rational(0,x) and 0 are equivalent,
-	  anyway.
-
-Fri Jun 13 21:26:39 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (string_to_c, nucomp_s_convert): preserve the current
-	  backref.
-
-	* rational.c (string_to_r, nurat_s_convert): ditto.
-
-	* include/ruby/intern.h (rb_match_busy): added a declaration.
-
-Fri Jun 13 18:08:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.xmlschema): don't accept decimal dot without
-	  fractional digits.  fractional digits handling simplified.
-
-Fri Jun 13 17:20:40 2008  wanabe  <s.wanabe@gmail.com>
-
-	* complex.c (string_to_c_internal): save and restore backref.
-	  fixed [ruby-dev:34991]
-
-Fri Jun 13 17:06:20 2008  wanabe  <s.wanabe@gmail.com>
-
-	* rational.c (string_to_r_internal): save and restore backref.
-	  fixed [ruby-dev:34990]
-
-Fri Jun 13 14:41:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* README.EXT.ja: update about Fixnum. reported in
-	   <http://www.tmtm.org/ja/tdiary/?date=20080611#p01>
-
-	* README.EXT.ja: describe about StringValueCStr().
-
-	* README.EXT: ditto.
-
-Fri Jun 13 14:24:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_memerror): exit with EXIT_FAILURE instead of magic number.
-
-	* gc.c (ruby_stack_check): STACK_LENGTH should be less than
-	  STACK_LEVEL_MAX.
-
-Fri Jun 13 12:55:37 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (sort_by_i): use NODE_DOT2 instead of NODE_MEMO to avoid
-	  extra calls to is_pointer_to_heap() in GC.
-
-	* enum.c (enum_zip): ditto.
-
-Fri Jun 13 00:41:58 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_thread.rb: add a test.
-
-Thu Jun 12 23:30:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (mutex_unlock): fix cond_notified consistency.
-
-Thu Jun 12 22:19:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (native_sleep): fixed previous commit.
-
-Thu Jun 12 21:59:17 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c, vm_core.h, vm.c, thread_pthread.c, thread_win32.c: add
-	  deadlock detection.  [ruby-dev:35044]
-
-	* bootstraptest/test_thread.rb: add tests for above.
-
-Thu Jun 12 21:39:55 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: refactoring.
-
-	* rational.c: ditto.
-
-Thu Jun 12 17:11:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regint.h: undefine USE_CAPTURE_HISTORY which is mentioned as
-	  unsupported in the Onigiruma document.
-
-Thu Jun 12 13:36:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (rb_intern): use rb_intern2 with strlen for
-	  constant symbols to optimize strlen.
-
-Thu Jun 12 08:47:51 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): should use io_read_encoding(), not
-	  io_input_encoding().
-
-	* io.c (rb_io_getline_1): reduce calling of io_read_encoding().
-
-	* string.c (rb_str_scan): need not to restore $~ value, so avoid
-	  pinning match object.
-
-Thu Jun 12 02:49:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/stringio/stringio.c (strio_init): rewind when reopened.
-
-Thu Jun 12 02:43:27 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_zip): ANSI style.
-
-Thu Jun 12 02:25:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_reopen): clear read buffer.
-
-Thu Jun 12 00:56:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk: check proper conditions.  [ruby-dev:35047]
-
-Wed Jun 11 23:33:13 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fread): bypass buffered read if reading buffer is empty.
-
-	* io.c (remain_size): do not add extra one byte.
-
-Wed Jun 11 12:15:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_normal_exit): hide stderr output
-	  when success.
-
-Wed Jun 11 09:26:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (encs): need to pass miniruby path for windows.
-
-Wed Jun 11 05:53:20 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, eval_intern.h (PASS_PASSED_BLOCK):
-	  set a VM_FRAME_FLAG_PASSED flag to skip this frame when
-	  searching ruby-level-cfp.
-
-	* eval.c, eval_intern.h, proc.c: fix to check cfp.  if there is
-	  no valid ruby-level-cfp, cause RuntimeError exception.
-	  [ruby-dev:34128]
-
-	* vm_core.h, vm_evalbody.c, vm.c, vm_dump.c, vm_insnhelper.c,
-	  insns.def: rename FRAME_MAGIC_* to VM_FRAME_MAGIC_*.
-
-	* KNOWNBUGS.rb, bootstraptest/test*.rb: move solved bugs.
-
-Wed Jun 11 05:55:31 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: SEGV when tcltk-stubs is enabled.
-
-	* ext/tk/tcltklib.c: avoid error on a shared object.
-
-	* ext/tk/extconf.rb: support --with-tcltkversion
-
-	* ext/tk/README.tcltklib: add document about --with-tcltkversion
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/multi-tk.rb, ext/tk/lib/remote-tk.rb:
-	  not work on $SAFE==4
-
-	* ext/tk/lib/multi-tk.rb: Object#methods returns Symbols on Ruby1.9.
-
-	* ext/tk/lib/tk/timer.rb: add TkTimer#at_end(proc) to register the
-	  procedure which called at end of the timer.
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/itemfont.rb, ext/tk/lib/font.rb:
-	  support __IGNORE_UNKNOWN_CONFIGURE_OPTION__ about font options.
-
-	* ext/tk/lib/*: treat __IGNORE_UNKNOWN_CONFIGURE_OPTION__
-
-	* ext/tk/lib/tkextlib/iwidgets/scrolledcanvas.rb,
-	  ext/tk/lib/tkextlib/iwidgets/scrolledlistbox.rb,
-	  ext/tk/lib/tkextlib/iwidgets/scrolledtext.rb: bug fix.
-
-	* ext/tk/lib/tk/text.rb: typo. call a wrong method.
-
-	* ext/tk/lib/tk/itemconfig.rb: ditto.
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/itemconfig.rb,
-	  ext/tk/lib/tk/canvas.rb: support alias names of option keys.
-
-	* ext/tk/lib/tk/grid.rb: lack of module-method definitions.
-
-	* ext/tk/lib/tk/pack.rb, ext/tk/lib/tk/grid.rb: increase supported
-	  parameter patterns of configure method.
-
-	* ext/tk/lib/tk.rb: add TkWindow#grid_anchor, grid_column, grid_row.
-
-	* ext/tk/lib/tk/wm.rb: methods of Tk::Wm_for_General module cannot
-	  pass the given block to methods of Tk::Wm module.
-
-	* ext/tk/lib/tk/wm.rb: Wm#overrideredirect overwrites argument to
-	  an invalid value.
-
-	* ext/tk/lib/tk.rb: fix memory (object) leak bug.
-
-	* ext/tk/tcltklib.c, ext/tk/tkutil/tkutil.c: fix memory leak.
-
-	* ext/tk/sample/demos-jp/aniwave.rb, ext/tk/sample/demos-en/aniwave.rb:
-	  bug fix.
-
-	* ext/tk/lib/tkextlib/blt/component.rb,
-	  ext/tk/lib/tkextlib/tile/tentry.rb,
-	  ext/tk/lib/tkextlib/tile/treeview.rb: ditto.
-
-	* ext/tk/lib/tkextlib/tile/tpaned.rb: improve TPaned#add.
-
-	* ext/tk/sample/demos-jp/widget, ext/tk/sample/demos-en/widget,
-	  ext/tk/sample/demos-jp/style.rb, ext/tk/sample/demos-en/style.rb,
-	  ext/tk/sample/demos-jp/bind.rb, ext/tk/sample/demos-en/bind.rb:
-	  bug fix.
-
-	* ext/tk/sample/ttk_wrapper.rb: ditto.
-
-	* ext/tk/sample/ttk_wrapper.rb: support "if __FILE__ == $0" idiom.
-
-	* ext/tk/sample/tktextio.rb: add binding for 'Ctrl-u' at console mode.
-
-	* ext/tk/lib/tkextlib/tile.rb, ext/tk/lib/tkextlib/tile/style.rb,
-	  ext/tk/sample/ttk_wrapper.rb: improve treating and control themes.
-	  add Tk::Tile.themes and Tk::Tile.set_theme(theme).
-
-	* ext/tk/lib/tkextlib/tile.rb: lack of autoload definitions.
-
-	* ext/tk/lib/tkextlib/tile/tnotebook.rb: cannot use kanji (not UTF-8)
-	  characters for headings.
-
-	* ext/tk/lib/tkextlib/tkDND/shape.rb: wrong package name.
-
-	* ext/tk/tkutil/tkutil.c: improve handling callback-subst-keys.
-	  Now, support longnam-keys (e.g. '%CTT' on tkdnd-2.0; however, still
-	  not support tkdnd-2.0 on tkextlib), and symbols of parameters (e.g.
-	  :widget=>'%W', :keycode=>'%k', '%x'=>:x, '%X'=>:root_x, and so on;
-	  those are attributes of event object). It means that Ruby/Tk accepts
-	  not only "widget.bind(ev, '%W', '%k', ...){|w, k, ...| ... }", but
-	  also "widget.bind(ev, :widget, :keycode, ...){|w, k, ...| ... }".
-	  It is potentially incompatible, when user passes symbols to the
-	  arguments of the callback block (the block receives the symbols as
-	  strings). I think that is very rare case (probably, used by Ruby/Tk
-	  experts only). When causes such trouble, please give strings instead
-	  of such symbol parameters (e.g. call Symbol#to_s method).
-
-	* ext/tk/lib/tk/event.rb, ext/tk/lib/tk/validation.rb,
-	  ext/tk/lib/tkextlib/blt/treeview.rb,
-	  ext/tk/lib/tkextlib/winico/winico.rb: ditto.
-
-	* ext/tk/tkutil/tkutil.c: strings are available on subst_tables on
-	  TkUtil::CallbackSubst class (it is useful on Ruby 1.9).
-
-	* ext/tk/lib/tk/spinbox.rb, ext/tk/lib/tkextlib/iwidgets/hierarchy.rb,
-	  ext/tk/lib/tkextlib/iwidgets/spinner.rb,
-	  ext/tk/lib/tkextlib/iwidgets/entryfield.rb,
-	  ext/tk/lib/tkextlib/iwidgets/calendar.rb,
-	  ext/tk/lib/tkextlib/blt/dragdrop.rb,
-	  ext/tk/lib/tkextlib/tkDND/tkdnd.rb,
-	  ext/tk/lib/tkextlib/treectrl/tktreectrl.rb,
-	  ext/tk/lib/tkextlib/tktable/tktable.rb: disable code piece became
-	  unnecessary by reason of the changes of ext/tk/tkutil/tkutil.c.
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/multi-tk.rb: change strategy to define
-	  the constant WITH_ENCODING.
-
-	* ext/tk/lib/tk.rb: fix bug on Tk::Encoding.tk_encoding_names.
-
-Wed Jun 11 03:40:37 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/find.rb (Find#find): Return an enumerator if no block is
-	  given.
-
-Wed Jun 11 01:28:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/intern.h, proc.c: revert rb_proc_call() and
-	  create rb_proc_call_with_block() instead.
-
-	* include/ruby/ruby.h, eval_jump.c, thread.c, vm_insnhelper.c:
-	  rb_blockptr should not be exposed.
-
-Tue Jun 10 21:07:19 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_float.rb: add tests. [ruby-dev:35009]
-
-Tue Jun 10 20:55:57 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_convert): need not to initialize optional
-	  argument for rb_scan_args().
-
-Tue Jun 10 20:13:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb: negate default of --without-ext if --with-ext is
-	  given.
-
-	* ext/extmk.rb: negate default of --without-ext.
-
-Tue Jun 10 17:43:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_shuffle_bang): update RDoc.  [ruby-dev:35034]
-
-Tue Jun 10 17:30:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_obj_instance_exec, rb_mod_module_exec):
-	  added prototypes.
-
-Tue Jun 10 17:00:29 2008  wanabe  <s.wanabe@gmail.com>
-
-	* util.c (ruby_strtod): ruby_strtod don't allow a trailing
-	  decimal point like "7.". [ruby-dev:34835] [ruby-dev:35009]
-
-Tue Jun 10 13:48:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* rational.c (nurat_s_convert): need not to initialize optional
-	  argument for rb_scan_args().
-
-Tue Jun 10 12:58:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/io/wait/wait.c (FIONREAD_POSSIBLE_P): suppress warnings.
-
-Tue Jun 10 12:43:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (CONST_ID_CACHE): fixed statement expression.
-
-Tue Jun 10 11:25:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (rb_argv0): revised for ext/tk.
-
-	* include/ruby/encoding.h: not to use varargs.h since requiring C89.
-
-Tue Jun 10 00:50:51 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* include/ruby/ruby.h, vm_core.h: add a type rb_blockptr.
-
-	* vm_insnhelper.c (vm_yield_with_cfunc): vm_yield_with_cfunc receives
-	  blockptr and passes it to iterating block.
-
-	* proc.c (rb_proc_call), include/ruby/intern.h: rb_proc_call receives
-	  blockptr.  "rb_proc_call(self, args, blockptr)" in C corresponds to
-	  "self.call(*args, &block)" in Ruby.
-
-	* proc.c (proc_call): pass blockptr to block that is written in C.
-
-	* proc.c (curry): receive blockptr and pass it to original proc.
-	  [ruby-core:15551]
-
-	* vm.c (invoke_block_from_c): fix for change of vm_yield_with_cfunc.
-
-	* thread.c (call_trace_proc), eval_jump.c (rb_call_end_proc): fix for
-	  change of rb_proc_call.
-
-Tue Jun 10 00:10:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk (test-knownbug): give $(OPTS) for bootstraptest/runner.rb.
-
-Mon Jun  9 23:10:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (Init_stack): don't declare.  it is a macro now.
-
-Mon Jun  9 22:46:47 2008  wanabe  <s.wanabe@gmail.com>
-
-	* compile.c : treat []&&= in virtually the same way as []||=.
-	  [ruby-dev:34679]
-
-Mon Jun  9 21:17:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend (clean): remove build directories.
-
-	* test_knownbug.rb -> KNOWNBUGS.rb: renamed.
-
-	* common.mk: apply above change.
-
-Mon Jun  9 21:14:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): set flags.
-
-Mon Jun  9 21:09:02 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb -> ./test_knownbug.rb: moved.
-
-	* common.mk: add a rule "test-knownbug".
-
-Mon Jun  9 21:00:32 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_s_convert): can accept Complex('i').
-	  [ruby-dev:34991]
-
-Mon Jun  9 18:25:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (CONST_ID): constant ID cache for non-gcc.
-
-	* *.c: no cache in init functions.
-
-Mon Jun  9 17:56:30 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#delete_if): Call to_a.
-	  (SortedSet#delete_if, TC_SortedSet#test_sortedset): Use super to
-	  yield elements in sorted order; [ruby-core:17144] by Arthur
-	  Schreiber.
-	  (SortedSet#each, SortedSet#each, TC_Set#test_each)
-	  (TC_SortedSet#test_sortedset): Return self; [ruby-dev:35002] by
-	  Arthur Schreiber.
-
-Mon Jun  9 17:47:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (fptr_finalize): close IO object if fd is already closed.
-	  (rb_p): call rb_io_write just once.
-
-Mon Jun  9 15:37:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (require_libraries): req_list may be NULL.  [ruby-dev:35008]
-
-Mon Jun  9 14:18:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct rb_vm_struct): moved src_encoding_index,
-	  ruby_debug, ruby_verbose, and rb_progname.
-
-	* ruby.c (rb_argv0): no longer used.
-
-	* ruby.c (struct cmdline_options): moved setids and req_list, and the
-	  latter is now an array, to prevent memory leak.
-
-	* ruby.c (cmdline_options_init): added.
-
-	* ruby.c (add_modules, require_libraries, init_ids, forbid_setid): use
-	  struct cmdline_options.
-
-	* vm.c (vm_init2): initialize src_encoding_index.
-
-	* vm.c: getters/setters for ruby_{debug,verbose}.
-
-Mon Jun  9 09:54:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (Init_stack): make to call ruby_init_stack.
-
-Mon Jun  9 08:12:40 2008  wanabe  <s.wanabe@gmail.com>
-
-	* vm_insnhelper.c, vm.c, proc.c : revert r17021. [ruby-dev:34997]
-
-Mon Jun  9 03:12:23 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/pending.rb: move/remove solved issues.
-
-	* bootstraptest/test_class.rb: ditto.
-
-Mon Jun  9 02:32:58 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/zlib/zlib.c (rb_deflate_init_copy): Copy buffers as well.
-	  [ruby-list:45018]
-
-Sun Jun  8 22:22:20 2008  wanabe  <s.wanabe@gmail.com>
-
-	* vm_insnhelper.c, vm.c, proc.c (proc_call): allow call method with
-	  block that both is written in C. [ruby-dev:34273] [ruby-core:15551]
-
-	*  proc.c (curry): use proc_call instead of rb_proc_call.
-	  [ruby-dev:34273] [ruby-core:15551]
-
-Sun Jun  8 21:50:27 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/zlib/test_zlib.rb: add tests to achieve over 90% test coverage
-	  of zlib.
-
-Sun Jun  8 20:12:47 2008  wanabe  <s.wanabe@gmail.com>
-
-	* vm_insnhelper.c (vm_throw): regard break as return in lambda.
-	  [ruby-dev:34646]
-
-Sun Jun  8 19:17:59 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c: add a build option "CALC_EXACT_MALLOC_SIZE".
-	  This option enables to calculate exact size of current
-	  allocated size by malloc().  You can access these information
-	  with GC.malloc_allocated_size and GC.malloc_allocations.
-	  This option consume additional memory as a header of each memory
-	  object.  This option also helps to find out xmalloc()/xfree()
-	  consistency.  If you get trouble with this option, some extension
-	  using "free()" instead of "xfree()".
-	  This options is disabled by default.
-
-Sun Jun  8 18:15:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* array.c, bignum.c, cont.c, dir.c, dln.c, encoding.c, enumerator.c,
-	  enumerator.c (enumerator_allocate), eval_jump.c, file.c, hash.c,
-	  io.c, load.c, pack.c, proc.c, random.c, re.c, ruby.c, st.c,
-	  string.c, thread.c, thread_pthread.c, time.c, util.c, variable.c,
-	  vm.c, gc.c:
-	  allocated memory objects by xmalloc (ruby_xmalloc) should be
-	  freed by xfree (ruby_xfree).
-
-	* ext/curses/curses.c, ext/dbm/dbm.c, ext/digest/digest.c,
-	  ext/gdbm/gdbm.c, ext/json/ext/parser/parser.c,
-	  ext/json/ext/parser/unicode.c, ext/openssl/ossl_cipher.c,
-	  ext/openssl/ossl_hmac.c, ext/openssl/ossl_pkey_ec.c,
-	  ext/sdbm/init.c, ext/strscan/strscan.c, ext/zlib/zlib.c:
-	  ditto.
-
-Sun Jun  8 01:15:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* hash.c (hash_i): make Hash#hash order insensitive.
-	  (rb_hash_dup): use DUPSETUP.
-
-Sat Jun  7 23:47:35 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/zlib/zlib.c (rb_deflate_initialize, Init_zlib): Fix up
-	  initialize_copy; [ruby-list:45016].
-
-Sat Jun  7 22:15:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (VENDOR_DIR): use LIBDIR instead of PREFIX as well as
-	  SITE_DIR.  a patch from Richard Brown <rbrown AT exherbo.org> in
-	  [ruby-core:17129].
-
-Sat Jun  7 21:37:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_f_open), re.c (rb_reg_search), transcode.c (str_transcode):
-	  suppress warnings.
-
-	* util.c (quorem, rv_alloc, nrv_alloc): only used in dtoa().
-
-Sat Jun  7 16:06:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (CFLAGS, CXXFLAGS): append default flags.
-
-Sat Jun  7 01:23:59 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (rb_open_file, rb_io_s_sysopen): fmode should be unsigned int.
-	  fixed [ruby-dev:34979]
-
-Fri Jun  6 23:46:19 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_callee_setup_arg): check simple flag before
-	  calling setup_arg function().  this change reduce function call.
-
-Fri Jun  6 21:51:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (COMMON_HEADERS): include ws2tcpip.h.
-
-	* ext/socket/addrinfo.h (addrinfo, getaddrinfo, getnameinfo,
-	  freehostent, freeaddrinfo): undef before define because these are
-	  macros in some versions of Windows SDK.
-
-	  merged from ruby_1_8.
-
-Fri Jun  6 18:25:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/iconv/utils.rb (default_test): override not to croak.
-
-Fri Jun  6 16:41:45 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h: include ws2tcpip.h. fixed [ruby-Bugs-20528]
-
-Fri Jun  6 15:05:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (count_objects): clear hash after counting objects.
-
-Fri Jun  6 12:43:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_dir.rb (TestDir::test_glob): glob file names not sorted.
-
-Fri Jun  6 00:05:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.xmlschema): don't use float.  fix
-	  http://rubyforge.org/tracker/index.php?func=detail&group_id=426&atid=1698&aid=20504
-
-Thu Jun  5 23:56:18 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_gc.rb: add tests to achieve over 90% test coverage of
-	  gc.c.
-
-	* test/ruby/test_objectspace.rb: ditto.
-
-	* test/ruby/test_marshal.rb: ditto.
-
-Thu Jun  5 23:40:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* gc.c (rb_objspace_alloc): this function is needed only when
-	  ENABLE_VM_OBJSPACE macro is defined.
-
-	* vm.c: ditto.
-
-Thu Jun  5 23:31:21 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/stringio/test_stringio.rb: add tests to achieve over 95% test
-	  coverage of stringio.
-
-	* test/strscan/test_stringscanner.rb: ditto for strscan.
-
-Thu Jun  5 23:25:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval.c (ruby_finalize_0): clear trace_func after executing END
-	  procs.
-
-	* thread.c: fix typo.
-
-Thu Jun  5 22:50:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (os_obj_of): heaps may be modified in yield.
-
-Thu Jun  5 21:46:50 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* st.c (st_reverse_foreach): comment out unused function.
-
-	* util.c (dtoa): ditto.
-
-Thu Jun  5 20:30:46 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/openssl/ossl_ssl_session.c (ossl_ssl_session_initialize):
-	  Add a null check for ssl; submitted by akira yamada
-	  in [ruby-dev:34950].
-
-	* ext/openssl/ossl_ssl.c (Init_ossl_ssl): Define OP_NO_TICKET if
-	  SSL_OP_NO_TICKET is present; submitted by akira yamada
-	  in [ruby-dev:34944].
-
-	* test/openssl/test_ssl.rb (OpenSSL#test_server_session): Add a
-	  workaround for the case where OpenSSL is configured with
-	  --enable-tlsext; submitted by akira yamada in [ruby-dev:34944].
-
-Thu Jun  5 20:24:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* thread.c (thread_set_trace_func_m): fix check for proc argument.
-
-Thu Jun  5 20:17:29 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* lib/rexml/document.rb (REXML::Document:write): leaky modification
-	  trans -> transitive.  [ruby-dev:32040], r13686
-
-	* lib/rexml/text.rb (Text.check): fix check for illegal character.
-
-Thu Jun  5 14:03:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_create): find encoding without options.
-
-Thu Jun  5 07:48:32 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* string.c (hash): should be "static".
-
-Thu Jun  5 01:47:18 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_transcode.rb: add tests for iso-2022-jp.
-
-Thu Jun  5 01:27:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_process.rb: add tests.
-
-Wed Jun  4 23:10:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/zlib/zlib.c (rb_gzfile_set_mtime): fix typo.
-
-Wed Jun  4 18:53:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_alloc): RDoc updated.  a patch from Gaston
-	  Ramos <ramos.gaston at gmail.com> in [ruby-core:17073].
-
-Wed Jun  4 18:36:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rdoc.rb: massive spelling correction patch from Evan Farrar
-	  <evanfarrar at gmail.com> in [ruby-doc:1382] applied.
-
-Wed Jun  4 17:52:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_iconv): fix for length argument and now
-	  allows range.  [ruby-core:17092]
-
-Wed Jun  4 15:45:41 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_with_index, enumerator_with_memo): Fix
-	  grammo in rdoc.
-
-Wed Jun  4 13:06:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (CFLAGS, CXXFLAGS): include additional flags to
-	  CFLAGS and CXXFLAGS while configuration.
-
-Tue Jun  3 23:06:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/strscan/strscan.c (strscan_scan_full, strscan_search_full): fix
-	  document.
-
-Tue Jun  3 22:37:26 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/strscan/strscan.c (strscan_exist_p): fix document.
-
-Tue Jun  3 22:33:29 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_dir.rb: add tests to achieve over 90% test coverage
-	  of dir.c.
-
-	* test/ruby/test_encoding.rb: add tests for dummy?, name_list and
-	  aliases.
-
-	* test/ruby/test_marshal.rb: add some tests.
-
-Tue Jun  3 22:25:51 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/etc/test_etc.rb: new tests for etc.
-
-Tue Jun  3 19:35:02 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_with_memo): New method: with_memo().
-
-Tue Jun  3 20:04:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (miniruby$(EXEEXT)): miniruby cannot be
-	  written by miniruby itself.
-
-Tue Jun  3 19:33:22 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_init_copy): Take care of
-	  initialize_copy as well as initialize.
-
-Tue Jun  3 16:06:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): fix for non-existent files and SFN of
-	  symlinks.  [ruby-talk:303736]
-
-Tue Jun  3 15:12:01 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#classify): Back out the `group_by' alias.
-	  Better think twice.
-
-Tue Jun  3 15:00:22 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#collect, Set#select): Back out.  I thought it
-	  was consistent but turned out to be wrong.
-
-Tue Jun  3 13:41:08 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#collect, Set#select): Override Enumerable
-	  methods and make them return a set. [ruby-core:17055]
-	  (Set#delete_if, Set#collect!, Set#reject!, Set#classify)
-	  (Set#divide, Set#delete_if): Return an enumerator if no block is
-	  given.
-	  (Set#classify): Define an alias `group_by' to override that of
-	  Enumerable.
-
-Tue Jun  3 13:35:40 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (run_exec_pgroup): C99 ism.
-
-Tue Jun  3 12:51:57 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_allocate, enumerator_ptr): Properly
-	  detect if the object is initialized and raise error when
-	  appropriate.
-	  (enumerator_initialize): Fix a typo in rdoc. [ruby-core:17052]
-
-Tue Jun  3 01:21:51 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_method.rb: add a test.
-
-Tue Jun  3 00:26:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* marshal.c (w_object): add a check for modification of array during
-	  its dump.
-
-Mon Jun  2 22:27:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enc/iso_8859_5.c: Large omicron should lowercase to small omicron.
-
-	* test/ruby/test_big5.rb, test/ruby/test_cp949.rb,
-	  test/ruby/test_euc_jp.rb, test/ruby/test_euc_kr.rb,
-	  test/ruby/test_euc_tw.rb, test/ruby/test_gb18030.rb,
-	  test/ruby/test_gbk.rb, test/ruby/test_iso_8859.rb,
-	  test/ruby/test_koi8.rb, test/ruby/test_shift_jis.rb,
-	  test/ruby/test_windows_1251.rb: new tests for encoding.
-
-	* test/ruby/test_utf16.rb, test/ruby/test_utf32.rb,
-	  test/ruby/test_regexp.rb: add tests.
-
-Mon Jun  2 21:56:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_file.rb: add tests for uninitialized object.
-
-	* test/ruby/test_class.rb: ditto.
-
-	* test/ruby/test_thread.rb: ditto.
-
-Mon Jun  2 21:44:15 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* re.c: fix SEGV by Regexp.allocate.names, Match.allocate.names, etc.
-
-	* test/ruby/test_regexp.rb: add tests for above.
-
-	* io.c: fix SEGV by IO.allocate.print, etc.
-
-	* test/ruby/test_io.rb: add tests for above.
-
-Mon Jun  2 19:17:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_argf.rb (teardown): remove renamed temporary files.
-
-Mon Jun  2 18:51:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/un.rb (wait_writable): wait until target files can be
-	  written actually.
-
-	* win32/Makefile.sub (LDSHARED_0, LINK_SO): get rid of failure of
-	  mt.exe.
-
-Mon Jun  2 16:26:17 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/delegate.rb (Delegator::MethodDelegation#respond_to):
-	  respond_to? should now take optional second argument; submitted
-	  by Jeremy Kemper <jeremy at bitsweat.net> in [ruby-core:17045].
-
-Mon Jun  2 16:14:18 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/erb.rb (ERB::Compiler::TrimScanner#scan_line): Oops.  This
-	  change did not apply to trunk.  Backed out.
-
-Mon Jun  2 16:08:24 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/erb.rb (ERB::Compiler::TrimScanner#scan_line): Fix a bug
-	  where tokens are not yielded one by one.
-
-	* test/erb/test_erb.rb (TestERBCore#_test_01)
-	  (TestERBCore#test_02_safe_04): The expected value should come
-	  first for assert_equal().
-
-Mon Jun  2 13:06:38 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* mkconfig.rb: hide build path from rbconfig.rb.
-
-Mon Jun  2 08:46:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_strtod, dtoa): initialize more variables for error
-	  handling.
-
-Mon Jun  2 04:55:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* suppress warnings on cygwin, mingw and mswin.
-
-Mon Jun  2 04:35:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/gb18030.c (gb18030_code_to_mbc): add 0x80000000
-	  for 4bytes character.
-
-Mon Jun  2 03:52:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (set_arg0): reverted used variable definition.
-
-Mon Jun  2 03:23:25 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/gb18030.c (gb18030_mbc_to_code): mask by 0x7FFFFFFF
-	  because OnigCodePoint will be used as 32bit signed int.
-	  Masking by 0x7FFFFFFF is ok on GB18030;
-	  Minimum 4bytes character is 0x81308130.
-
-Sun Jun  1 22:29:35 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* rational.c (string_to_r_internal): use rb_isdigit.
-
-	* marshal.c (long_toobig): use %zd.
-
-	* ruby.c (set_arg0): move unused variable definition.
-
-Sun Jun  1 12:18:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* insns.def (DEFINE_INSN): subtract of pointers is ptrdiff_t.
-	  this is not int on 64bit system.
-
-	* vm_dump.c (control_frame_dump): ditto.
-
-	* vm_dump.c (stack_dump_each): ditto.
-
-	* vm_dump.c (debug_print_register): ditto.
-
-	* vm_dump.c (debug_print_pre): ditto.
-
-	* transcode.c (str_transcode): ditto.
-
-Sun Jun  1 10:32:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): show coredump status.
-
-Sat May 31 23:33:34 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* README, README.ja: Add a note about default C flags.
-
-Sat May 31 23:02:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (count_objects): clear given hash.
-
-Sat May 31 20:28:10 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_regexp.rb: add tests.
-
-Sat May 31 19:11:39 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_16{be,le}.c (utf16{be,le}_code_to_mbc):
-	  fix codepoint to bytes.
-
-Sat May 31 18:28:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* suppress warnings with -Wwrite-string.
-
-Sat May 31 18:26:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_delete_if): should return enumerator if no block
-	  is given.  [ruby-dev:34901]
-
-Sat May 31 15:58:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, configure.in (warnflags): defaulted to -Wall
-	  -Wno-parentheses with gcc.  [ruby-dev:34810]
-
-Sat May 31 15:17:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/mvm.h: new header file for MVM, and moved rb_vm_t and
-	  rb_thread_t from vm_core.h.
-
-Sat May 31 12:02:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): show pid when fail.
-
-Fri May 30 23:55:56 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_rubyoptions.rb: add a test of RUBY_DESCRIPTION.
-
-Fri May 30 22:47:17 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_regexp.rb: add tests.
-
-Fri May 30 22:40:53 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_signal.rb: add tests to achieve over 80% test
-	  coverage of signal.c.
-
-Fri May 30 22:28:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* signal.c (esignal_signo): fix SignalException#signo which returned
-	  nil absolutely.
-
-	* signal.c (esignal_init): always prepend "SIG" to a string that is
-	  returned by SignalException#signm.
-
-Fri May 30 22:17:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_argf.rb: rename a conflicting method name.
-
-	* test/ruby/test_string.rb: ditto.
-
-	* test/ruby/test_io.rb: ditto.
-
-Fri May 30 22:14:37 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (defined_expr): fix SEGV by defined?([1]).
-
-Fri May 30 12:18:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (prelude.c): simply depends on PREP.  [ruby-dev:34877]
-
-	* enc/make_encdb.rb, enc/trans/make_transdb.rb: ditto.
-
-Fri May 30 10:55:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct rb_unblock_callback), thread.c
-	  (set_unblock_function), thread_{pthread,win32}.c (native_sleep):
-	  extracted from struct rb_thread_struct.
-
-	* thread.c (reset_unblock_function): not check interrupts at leaving
-	  blocking region.  [ruby-dev:34874]
-
-Fri May 30 06:09:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_8.c: add UTF8-MAC (UTF-8-MAC).
-
-Fri May 30 04:17:13 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (enum_count, count_all_i, Init_Enumerable),
-	  array.c (rb_ary_count): If no argument or block is given, count
-	  the number of all elements.
-
-Fri May 30 03:12:18 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/openssl/ossl_bn.c (ossl_bn_s_rand, ossl_bn_s_pseudo_rand):
-	  Int should be enough here.
-
-Fri May 30 02:35:00 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/openssl/ossl_bn.c (ossl_bn_s_rand, ossl_bn_s_pseudo_rand),
-	  ext/openssl/ossl_pkey_dh.c (ossl_dh_s_generate)
-	  (ossl_dh_initialize),
-	  ext/openssl/ossl_pkey_dsa.c (ossl_dsa_s_generate),
-	  ext/openssl/ossl_rand.c (ossl_rand_bytes)
-	  (ossl_rand_pseudo_bytes, ossl_rand_egd_bytes),
-	  ext/openssl/ossl_x509store.c (ossl_x509stctx_set_error): Do not
-	  use FIX2INT() without checking the value type.  Use NUM2INT()
-	  instead; found by akr in [ruby-dev:34890].
-
-Fri May 30 02:08:20 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* signal.c (esignal_init): handle a non-integer argument correctly,
-	  allowing SignalException.new(:INT).
-
-Fri May 30 00:59:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_regexp.rb: add tests.
-
-Thu May 29 22:51:05 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_require.rb: add a test for load with wrap flag, to
-	  achieve 100% test coverage of eval_jump.c.
-
-Thu May 29 22:47:53 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_argf.rb: new tests for ARGF, to achieve over 85% test
-	  coverage of file.c.
-
-	* test/ruby/test_io.rb: add tests.
-
-Thu May 29 22:41:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (argf_readchar): raise EOFError, synchronizing IO#readchar.
-
-Thu May 29 22:29:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* io.c (argf_external_encoding, argf_internal_encoding): fix SEGV by
-	  ARGF.external_encoding.
-
-Thu May 29 17:52:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/extconf.rb: search zlib1, and regard mswin32 later than VC6
-	  as WIN32.  [ruby-core:16984]
-
-Wed May 28 18:05:28 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_nitems, Init_Array): Axe Array#nitems().
-	  cf. [ruby-dev:34676]-[ruby-dev:34713]
-
-Wed May 28 17:50:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/mkexports.rb (Exports#objdump, Exports#each_line): extracted.
-
-Wed May 28 17:41:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (MKPREP): appended $(RBCONFIG).
-
-	* common.mk (enc.mk, prelude.c): not depend on $(RBCONFIG) on mswin32
-	  to get of compiling twice each time.
-
-	* win32/Makefile.sub (prelude.c): not depend on $(PREP).
-
-Wed May 28 17:37:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/mkexports.rb (Exports::Mswin#each_export): speed up.
-
-Wed May 28 16:41:59 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_slice_bang): Call rb_ary_modify_check() at the
-	  beginning. [rubyspec]
-
-Wed May 28 16:12:44 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/webrick/httpservlet/cgihandler.rb (WEBrick::HTTPServlet::CGIHandler#do_GET):
-	  Set the HTTP status code to 302 if a Location header field is
-	  present and the status code is not valid as a client
-	  redirection.  cf. RFC 3875 6.2.3, 6.2.4.
-
-Wed May 28 15:53:52 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/trans/japanese.c (to_SHIFT_JIS_EF_infos): typo.
-
-Wed May 28 15:18:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/singleton.rb (SingletonClassMethods): _load should be public.
-
-Wed May 28 13:30:43 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c: add workaround for Unicode to CP932.
-	  U+2015->0x815C, U+2225->0x8161, U+FF0D->0x817C, U+FF3C->0x815F,
-	  U+FF5E->0x8160, U+FFE0->0x8191, U+FFE1->0x8192, U+FFE2->0x81CA
-
-Wed May 28 12:52:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (w_object, marshal_dump, r_object0, marshal_load): search
-	  private methods too.  [ruby-dev:34671]
-
-	* object.c (convert_type): ditto.
-
-Wed May 28 08:42:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c: "%" is required before PRI?VALUE.
-
-Tue May 27 22:10:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_error.c (error_handle): SystemExit and SignalException throws
-	  TAG_RAISE but not TAG_FATAL.
-
-	* thread.c (rb_thread_execute_interrupts): delay interrupts during
-	  raising exceptions.  [ruby-dev:34855]
-
-Tue May 27 20:18:30 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_slice_bang): Return an empty array instead of
-	  nil when pos is valid and len is adjusted from a valid value to
-	  zero; caught by RubySpec.
-
-Tue May 27 19:12:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (MKPREP), common.mk, win32/Makefile.sub (prelude.c): get
-	  rid of depending PREP with nmake.
-
-	* common.mk (encs): depends on libruby.
-
-Tue May 27 19:00:22 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/stringio/stringio.c (strio_each_char, Init_stringio): Add
-	  StringIO#{each_char,chars}.
-	  (Init_stringio): Fix StringIO#bytes.
-
-Tue May 27 17:54:35 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/stringio/stringio.c (strio_each_byte): Return self instead
-	  of nil as the rdoc says.
-
-Tue May 27 15:36:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (check_int): use PRIxVALUE format specifier.
-
-	* numeric.c (check_uint, rb_num2fix, int_chr): ditto.
-
-	* numeric.c (num_fdiv): fallback to_f should always return float
-	  result.  should not use #quo that may return rational.
-
-	* numeric.c (num_div): should raise ZeroDivisionError.
-
-	* numeric.c (fix_divide): ditto.
-
-	* test/ruby/test_numeric.rb (TestNumeric::test_divmod): avoid
-	  ZeroDivisionError in tests.
-
-Tue May 27 13:14:53 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (enum_to_a): Pass arguments through to #each().
-	  (enum_sort): Follow the enum_to_a signature change.
-	  (enum_reverse_each): Add #reverse_each().
-
-Tue May 27 13:12:37 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* io.c (Init_IO): Define ARGF.{lines,bytes,chars}.
-
-Tue May 27 12:06:37 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (BUFCHECK): wrong condition. [ruby-core:16921]
-
-	* file.c (file_expand_buf): shouldn't use buflen for length of string.
-
-Mon May 26 18:24:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (BUFCHECK): no resize if enough room.
-
-	* file.c (file_expand_path): use BUFCHECK.
-
-Mon May 26 17:48:42 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (struct enumerator, enumerator_init)
-	  (enumerator_init_copy, enumerator_each): Eliminate iter.
-	  (enumerator_ptr): Do not hardcode the class name.
-	  (enumerator_with_index): Delay variable initialization after
-	  RETURN_ENUMERATOR().
-
-Mon May 26 17:23:49 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (file_expand_path): add more space for '/'.
-
-	* file.c (file_expand_path): should reset address of p after calling
-	  rb_str_resize(). [ruby-dev:34800]
-
-Mon May 26 16:49:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode): use run-hooks if run-mode-hook is
-	  not available.  a patch from Kazuhiro NISHIYAMA <zn at mbf.nifty.com>
-	  in [ruby-dev:34853].
-
-Mon May 26 16:41:35 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (ntfs_tail): filename which starts with '.' is valid.
-
-	* file.c (file_expand_path): cygwin symlink support.
-
-Mon May 26 07:15:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_dump.c (rb_vm_bugreport): rb_make_backtrace has no arguments.
-
-Mon May 26 01:17:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): signal description
-	  refined.
-
-Mon May 26 00:52:52 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* hash.c (env_each_key, env_each_value, env_reject_bang)
-	  (rb_env_clear, env_replace): Omit duplicated secure level check.
-
-Mon May 26 00:37:16 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* hash.c (env_each_value): Do not call env_values() twice.
-
-Sun May 25 17:54:36 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_compile): set local_table for
-	  ISEQ_TYPE_DEFINED_GUARD.
-
-Sun May 25 17:52:25 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_build_body): remove side effect from
-	  VM::InstructionSequence.load.
-
-Sun May 25 04:30:45 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_module.rb (remove_json_mixins): change judgment
-	  condition.
-
-Sun May 25 03:54:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_module.rb (test_ancestors, test_included_modules):
-	  ignore json mixins.
-
-Sun May 25 02:37:25 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_method.c: renamed from vm_method.c.  "vm_method.c" is included
-	  by "vm.c".
-
-	* vm_eval.c: added.  Some codes are moved from "eval.c"
-
-	* common.mk: fix for above changes.
-
-	* compile.c: make a vm_eval(0)
-
-	* eval.c, eval_error.c, eval_intern.h, eval_jump.c, proc.c, vm.c,
-	  id.c, id.h, vm_core.h, vm_dump.c, vm_evalbody.c, vm_insnhelper.c,
-	  blockinlining.c: fix for above changes.  and do some refactoring.
-	  this changes improve rb_yield() performance.
-
-Sat May 24 22:32:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* util.c (ruby_strtod): clear errno at the top of our own
-	  implementation of strtod(3).  [ruby-dev:34834] [ruby-dev:34839]
-
-Sat May 24 15:26:16 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (iseq_set_exception_table, NODE_WHILE, NODE_NEXT): remove
-	  special handling that decrements sp in CATCH_TYPE_NEXT for NODE_WHILE.
-
-	* vm.c (vm_eval_body), vm_insnhelper.c (vm_throw): remove unused code.
-
-Sat May 24 08:13:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (rb_str_transcode): argc is 1, and argv is &to.
-
-Fri May 23 17:55:11 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_slice_bang): Be consistent with Array#slice()
-	  and String#slice!().  Just return nil when a negative length or
-	  out of boundary index is given instead of raising an exception
-	  via internal functions.
-
-Fri May 23 16:44:34 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (Init_Enumerator): Override
-	  Enumerable::Enumerator#each_with_index with #with_index.
-
-Fri May 23 12:23:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_num_t): moved form vm.h.
-
-	* tool/instruction.rb (RubyVM::Instruction#sp_increase_c_expr),
-	  tool/instruction.rb (RubyVM::VmBodyGenerator#make_header_operands):
-	  omit unused variables.
-
-Fri May 23 08:47:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (exc_equal): == operator should be transitional.
-	  [ruby-dev:34808]
-
-	* error.c (syserr_eqq): === should be able to handle delegated
-	  objects as well.
-
-Fri May 23 06:15:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (rb_iseq_compile_with_option): get rid of segv.
-
-Fri May 23 02:29:14 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (opt_gt|ge|lt|le): use values directly to compare.
-
-Fri May 23 01:15:09 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, eval_intern.h, include/ruby/intern.h, include/ruby/ruby.h,
-	  vm.c, vm_core.h, vm_insnhelper.c: remove pointless "const".
-
-Thu May 22 23:45:17 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* compile.c (get_destination_insn, get_next_insn, get_prev_insn):
-	  peephole optimization should not ignore ISEQ_ELEMENT_ADJUST.
-
-Thu May 22 20:20:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (check_dump_arg, check_load_arg): check if reentered.
-	  [ruby-dev:34802]
-
-Thu May 22 20:14:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* iseq.c (iseq_load, iseq_data_to_ary): support
-	  ISEQ_TYPE_DEFINED_GUARD.
-
-Thu May 22 19:01:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_get_ruby_level_cfp): moved from eval_intern.h.
-
-	* vm.c (sdr, nsdr): define methods only if VMDEBUG is defined.
-
-Thu May 22 17:18:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* array.c (rb_ary_compact_bang): fix reallocation size.
-
-Thu May 22 15:20:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval_intern.h, vm_core.h, include/ruby/intern.h, include/ruby/ruby.h,
-	  vm.c: need to add const to prototypes, of course.
-
-Thu May 22 13:24:43 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, vm.c, vm_core.h, vm_insnhelper.c: specify "const".
-
-	* vm_opts.h: add a OPT_TOKEN_THREADED_CODE macro.
-
-Thu May 22 12:51:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* insns.def (newhash): fix a variable definition: "const k".
-
-Thu May 22 12:40:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (flatten): check if reentered.  [ruby-dev:34798]
-
-Thu May 22 11:39:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (assert_normal_exit): capture stdout and stderr
-	  of the child process.
-
-Thu May 22 08:28:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (flatten): free memo hash table before raising exception.
-	  [ruby-dev:34789]
-
-Thu May 22 06:30:10 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* array.c (flatten): fix memory leak.
-
-Thu May 22 06:21:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_str_caseeql): added.
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_enc_find_index): use nkf_str_caseeql.
-
-Thu May 22 05:45:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (proc_dup): should copy safe_level from src proc
-	  properly.  a patch from Keita Yamaguchi
-	  <keita.yamaguchi at gmail.com>
-
-Thu May 22 02:46:08 2008  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb: do not use Thread#raise. [ruby-dev:34739]
-
-Thu May 22 00:30:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_require.rb: new tests for library requiring, to
-	  achieve over 90% test coverage of dln.c.
-
-	* test/ruby/test_class.rb: add tests to achieve over 90% test coverage
-	  of class.c.
-
-	* test/ruby/test_module.rb: ditto.
-
-Thu May 22 00:15:44 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def, vm_insnhelper.c: specify "const".
-
-Wed May 21 23:20:21 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_eval.rb: fix syntax.
-
-Wed May 21 17:46:17 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_enc_find_index):
-	  use strcasecmp. [ruby-dev:34787]
-
-Wed May 21 16:48:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_compact_bang): avoid forceful realloc.
-
-Wed May 21 07:42:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_usascii_str_new): use rb_str_new.
-
-	* string.c (rb_enc_str_new): ditto.
-
-	* string.c (rb_usascii_str_new2): use rb_str_new2.
-
-Wed May 21 07:22:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c, include/ruby/encoding.h
-	  (rb_enc_associate, rb_enc_associate_index):
-	  returns obj. [ruby-dev:34778]
-
-Wed May 21 04:20:20 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_ascii8bit_encoding): use ENCINDEX_ASCII.
-
-	* encoding.c, include/ruby/encoding.h (rb_ascii8bit_encindex):
-	  added.
-
-	* encoding.c (rb_locale_encoding): use rb_usascii_encoding().
-
-Wed May 21 01:45:58 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_file_exhaustive.rb (setup): workaround for Windows
-	  Vista.
-
-	* test/ruby/envutil.rb (rubyexec): now Open3.open3 is supported on
-	  Windows.
-
-	* test/ruby/test_process.rb: use ``||'' instead of ``;'' because
-	  cmd.exe not support it.
-
-Wed May 21 01:28:47 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c, include/ruby/encoding.h (rb_str_transcode):
-	  C API of encoding conversion for Ruby object.
-	  VALUE rb_str_transcode(VALUE str, VALUE to).
-
-	* transcode.c (str_encode, str_encode_bang):
-	  rename from rb_tr_transcode or rb_str_transcode_bang.
-
-Tue May 20 23:26:05 2008  Yusuke Endoh	<mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: fix tests for 64bit CPU.
-
-Tue May 20 20:59:56 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (rb_nkf_convert) (nkf_enc_without_bom):
-	  reverted. nkf-utf8/nkf.c should be independent of ruby.
-
-	* ext/nkf/nkf.c (options):
-	  moved from nkf-utf8/nkf.c.
-	  override nkf's original settings for Unicode BOM.
-
-Tue May 20 13:20:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_convert), ext/nkf/nkf-utf8/nkf.c
-	  (nkf_enc_without_bom): BOM is not a part of encodings.
-
-	* ext/nkf/nkf.c (Init_nkf), ext/nkf/nkf-utf8/nkf.c (options):
-	  UTF-{16,32} without endian have no sense.
-
-Tue May 20 12:13:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options, process_options): --dump option.
-
-Tue May 20 11:36:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (PRI[diouxX]VALUE): printf format for VALUE.
-
-	* gc.c (assign_heap_slot): suppress a warning.
-
-Tue May 20 03:42:43 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c, vm_insnhelper.c: fix cref in instance_eval
-	  and cvar_base search protocol.
-
-	* bootstraptest/test_knownbug.rb, test_eval.rb: move solved test
-	  and add new tests.
-
-	* test/ruby/test_eval.rb: fix tests for spec.
-
-Tue May 20 01:43:44 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: fix a test.
-	  "block_given?" returns true if "yield" can be used.
-
-Tue May 20 01:07:19 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* parse.y (assignable_gen): when "self = 1" was evaluated, unnecessary
-	  error message was output, which might cause null pointer access.
-
-Tue May 20 08:38:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_enc_strlen_cr): need to set ENC_CODERANGE_7BIT if
-	  search_nonascii() fails.    [ruby-dev:34751]
-
-	* string.c (rb_str_reverse): preserve coderange info if the
-	  receiver is 7bit string.
-
-	* string.c (rb_str_reverse_bang): ditto.
-
-	* string.c (rb_str_reverse_bang): should have called
-	  single_byte_optimizable before rb_str_modify() that clears
-	  coderange info.
-
-	* string.c (tr_trans): handle single bytes more eagerly.
-
-Mon May 19 23:32:12 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (invoke_block_from_c): fix call flow.
-
-Mon May 19 23:19:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* regexec.c (slow_search): check the case when the length is 1.
-	  The behavior of memcmp is undefined if the third argument is 0.
-
-Mon May 19 21:07:48 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (native_thread_apply_priority):
-	  fix argument range check.  [ruby-dev:33124]
-
-Mon May 19 18:22:35 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/openssl/ossl_pkcs5.c (ossl_pkcs5_pbkdf2_hmac): Fix the type
-	  of md; pointed out by Takahiro Kambe <taca at back-street.net>
-	  in [ruby-dev:34748].
-
-Mon May 19 17:23:55 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regparse.c (PINC): use optimized enclen() instead of
-	  ONIGENC_MBC_ENC_LEN().
-
-	* regparse.c (PFETCH): ditto.
-
-	* regparse.c (PFETCH): small optimization.
-
-	* regexec.c (slow_search): single byte encoding optimization.
-
-	* regenc.h (enclen): avoid calling function when encoding's
-	  min_len == max_len.
-
-	* re.c (rb_reg_regsub): rb_enc_ascget() optimization for single
-	  byte encoding.
-
-	* re.c (rb_reg_search): avoid allocating new re_registers if we
-	  already have MatchData.
-
-	* re.c (match_init_copy): avoid unnecessary onig_region_free()
-	  before onig_region_copy.
-
-	* encoding.c (rb_enc_get_index): remove implicit enc_capable check
-	  each time.
-
-	* encoding.c (rb_enc_set_index): ditto.
-
-	* encoding.c (enc_compatible_p): small refactoring.
-
-	* include/ruby/encoding.h (rb_enc_dummy_p): inline
-	  rb_enc_dummy_p() and export related code.
-
-Mon May 19 14:32:03 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* version.h: fix strange change by version.h update tool.
-
-Mon May 19 14:18:13 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: move solved tests.
-
-	* bootstraptest/test_eval.rb, test_literal.rb, test_syntax.rb,
-	  test_thread.rb: ditto.
-
-	* test/ruby/test_m17n.rb, test_proc.rb, test_sprintf.rb,
-	  test_string.rb, test/ruby/test_struct.rb: ditto.
-
-Mon May 19 13:23:03 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_spawn_internal): set last_status when status == -1
-	  because there is no path to set it on win32. this patch is derived
-	  from [ruby-core:16787], submitted by Luis Lavena <luislavena at
-	  gmail.com>
-
-Mon May 19 11:32:47 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, insns.def, eval.c, vm_insnhelper.c: fix CREF handling.
-	  VM value stack frame of block contains cref information.
-	 (dfp[-1] points CREF)
-
-	* compile.c, eval_intern.h, eval_method.c, load.c, proc.c,
-	  vm_dump.h, vm_core.h: ditto.
-
-	* include/ruby/ruby.h, gc.c: remove T_VALUES because of above
-	  changes.
-
-	* bootstraptest/test_eval.rb, test_knownbug.rb: move solved test.
-
-Sun May 18 22:26:51 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/filehandler.rb: should normalize path
-	  name in path_info to prevent script disclosure vulnerability on
-	  DOSISH filesystems. (fix: CVE-2008-1891)
-	  Note: NTFS/FAT filesystem should not be published by the platforms
-	  other than Windows. Pathname interpretation (including short
-	  filename) is less than perfect.
-
-	* lib/webrick/httpservlet/abstract.rb
-	  (WEBrick::HTTPServlet::AbstractServlet#redirect_to_directory_uri):
-	  should escape the value of Location: header.
-
-	* lib/webrick/httpservlet/cgi_runner.rb: accept interpreter
-	  command line arguments.
-
-Sun May 18 02:54:46 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* pack.c (pack_pack): check errno to detect error of ruby_strtoul.
-
-	* pack.c (pack_unpack): ditto.
-
-	* test/ruby/test_pack.rb: add a test for above.
-
-Sat May 17 23:53:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): fix for short file name on Cygwin.
-
-Sat May 17 18:03:52 2008  Yuki Sonoda (Yugui) <yugui@yugui.jp>
-
-	* vm.c (Init_VM): removed the definition of Thread#initialize,
-	  which is overwritten in Init_Thread and is never used.
-
-Sat May 17 14:01:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): should not free shared pointer, and set
-	  shared.  [ruby-dev:34732]
-
-Sat May 17 12:34:54 2008  Yuki Sonoda (Yugui) <yugui@yugui.jp>
-
-	* thread_pthread.c (Init_native_thread): Kernel#.sleep used never to
-	  sleep on Mac OS X. Reported by arton <artonx AT yahoo.co.jp>.
-
-	* thread_pthread.c (native_sleep): added error checks.
-
-Sat May 17 11:29:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_extname): first dot is not an extension name.
-
-Sat May 17 03:21:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): stop memory leak.  [ruby-dev:34726]
-
-	* re.c (rb_reg_search): need to free allocated buffer in re_register.
-
-	* regexec.c (onig_region_new): more pedantic malloc check.
-
-	* regexec.c (onig_region_resize): ditto.
-
-	* regexec.c (STATE_CHECK_BUFF_INIT): ditto.
-
-	* regexec.c (onig_region_copy): use onig_region_resize.
-
-Fri May 16 12:48:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* math.c (to_flo): rb_Float() accepts even strings for input.
-
-	* complex.c (nucomp_to_f): fix wrong message.
-
-	* complex.c (nucomp_to_r): ditto.
-
-	* object.c (rb_Float): do not check NaN for error.  NaN is a part
-	  of valid float values.
-
-Thu May 15 23:36:09 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_string.rb: add tests to achieve over 90% test
-	  coverage of string.c.
-
-	* test/ruby/test_m17n.rb: ditto.
-
-	* test/ruby/test_symbol.rb: ditto.
-
-	* test/ruby/test_pack.rb: ditto.
-
-Thu May 15 23:01:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* string.c (tr_find): String#delete returned wrong result when multiple
-	  utf-8 arguments are passed.
-
-	* test/ruby/test_m17n.rb (test_delete): add a test for above.
-
-Thu May 15 22:37:56 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (ripper_warningS): now used.
-
-Thu May 15 15:33:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): support for alternative data stream
-	  and ignored trailing garbage of NTFS.
-
-	* file.c (rb_file_s_basename): ditto.
-
-	* file.c (rb_file_s_extname): ditto.
-
-Thu May 15 13:43:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): no need for forceful warning when
-	  converting to float.  overflow is a nature of float values.
-
-	* parse.y (parser_yylex): ditto.
-
-Thu May 15 13:23:20 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_prepare_enc): error condition was updated for non
-	  ASCII compatible strings.
-
-Thu May 15 12:19:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/openssl/openssl_missing.c (HMAC_CTX_copy): adopted
-	  prototype change in openssl bundled with newer OpenBSD.
-	  a patch from Takahiro Kambe <taca at back-street.net> in
-	  [ruby-dev:34691].
-
-Wed May 14 22:09:25 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ChangeLog: fix typo.
-
-Wed May 14 21:49:14 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_object.rb: new tests to achieve over 90% test
-	  coverage of object.c, eval.c and eval_method.c.
-
-	* test/ruby/test_module.rb: ditto.
-
-	* test/ruby/test_trace.rb: ditto.
-
-	* test/ruby/test_integer.rb: ditto.
-
-	* test/ruby/test_float.rb: ditto.
-
-	* test/ruby/test_method.rb: ditto.
-
-	* test/ruby/test_variable.rb: ditto.
-
-	* test/ruby/test_eval.rb: ditto.
-
-	* test/ruby/test_exception.rb: ditto.
-
-	* test/ruby/test_class.rb: ditto.
-
-Wed May 14 12:46:37 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (insn_operand_intern): remove Qundef related code.
-
-Wed May 14 12:42:36 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_count): Override Enumerable#count for better
-	  performance.
-
-Wed May 14 11:29:06 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def: add a "putcbase" instruction.
-
-	* compile.c, insns.def: fix to use putcbase instruction for
-	  class search.  Qundef should not be used.
-
-Wed May 14 07:49:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_call0): defer calling of rb_frame_self() until it
-	  become really necessary.
-
-	* eval.c (rb_call): ditto.
-
-Wed May 14 00:55:56 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_io_m17n.rb: remove a duplicative method.
-
-	* test/ruby/test_utf16.rb: rename a conflicting method name.
-
-	* test/ruby/test_array.rb: ditto.
-
-	* test/ruby/test_file_exhaustive.rb: ditto.
-
-	* test/ruby/test_hash.rb: ditto.
-
-	* test/ruby/test_env.rb: ditto.
-
-	* test/ruby/test_fixnum.rb: ditto.
-
-	* test/ruby/test_rational.rb: ditto.
-
-Wed May 14 00:45:58 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval_method.c (rb_add_method): fix check for warning when
-	  Object#initialize is redefined. (same as 1.8)
-
-Tue May 13 23:32:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_yield): use rb_yield_values2.
-
-	* enum.c (DEFINE_ENUMFUNCS): macro to define enumerator and yielding
-	  functions.
-
-	* enum.c (enum_all_func, enum_any_func, enum_one_func,
-	  enum_none_func): reduced duplicate code.
-
-Tue May 13 15:09:38 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c: Update rdoc.
-	  (enumerator_initialize): Discourage the use.
-	  (enum_each_slice, enum_each_cons, enumerator_each)
-	  (enumerator_with_index): Add a note about a call without a block.
-
-Tue May 13 08:25:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_f_gets): re-enable rdoc.
-	  (rb_f_readline): ditto.
-	  (rb_f_readlines): ditto.
-
-Tue May 13 07:56:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cat): fixed buffer overrun reported by
-	  Christopher Thompson <cthompson at nexopia.com> in [ruby-core:16746]
-
-Mon May 12 23:37:57 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (collect_local_variables_in_env): remove unnecessary check
-	  which causes: x=1;proc{local_variables}.call #=> []
-
-	* test/ruby/test_variable.rb: add a test for above.
-
-Mon May 12 23:05:24 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c, include/ruby/intern.h (rb_run_exec_options): externed.
-
-	* process.c (save_redirect_fd, save_env_i, save_env, run_exec_dup2,
-	  run_exec_open, run_exec_pgroup, run_exec_rlimit, rb_run_exec_options):
-	  save parent's process environments.
-
-	* process.c (rb_spawn_internal): remove calling run_exec_options()
-	  because cannot restore after spawn.
-
-	* io.c (pipe_open): ditto.
-
-	* test/ruby/test_process.rb (test_execopts_env): upcase environment
-	  variable name for case insensitive platforms.
-
-	* win32/win32.c (init_env): set USER environment variable only when
-	  USERNAME is available.
-
-Mon May 12 22:23:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/date.rb (once): use Object#object_id instead of Symbol#to_i.
-
-Mon May 12 21:34:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/envutil.rb (rubybin): return expanded rubyexe instead of
-	  expanded ruby if available.
-
-Mon May 12 20:19:55 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (grep_i): Be aware of multiple values;
-	  fix [ruby-dev:34653].
-	  (grep_iter_i): Ditto.
-	  (count_i): Ditto.
-	  (find_i): Ditto.
-	  (find_index_i): Ditto.
-	  (find_all_i): Ditto.
-	  (reject_i): Ditto.
-	  (inject_i): Ditto.
-	  (inject_op_i): Ditto.
-	  (partition_i): Ditto.
-	  (group_by_i): Ditto.
-	  (first_i): Ditto.
-	  (sort_by_i): Ditto.
-	  (all_i): Ditto.
-	  (all_iter_i): Ditto.
-	  (any_i): Ditto.
-	  (any_iter_i): Ditto.
-	  (one_i): Ditto.
-	  (one_iter_i): Ditto.
-	  (none_i): Ditto.
-	  (none_iter_i): Ditto.
-	  (min_i): Ditto.
-	  (min_ii): Ditto.
-	  (max_i): Ditto.
-	  (max_ii): Ditto.
-	  (minmax_i): Ditto.
-	  (minmax_ii): Ditto.
-	  (min_by_i): Ditto.
-	  (max_by_i): Ditto.
-	  (minmax_by_i): Ditto.
-	  (member_i): Ditto.
-	  (take_i): Ditto.
-	  (take_while_i): Ditto.
-	  (drop_i): Ditto.
-	  (drop_while_i): Ditto.
-	  (cycle_i): Ditto.
-
-	* enum.c (each_with_index): Update rdoc.  each_with_index() takes
-	  arguments that are passed through to each(), and a hash preserves
-	  key order.
-
-Mon May 12 19:05:24 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_spawn_internal): remove calling run_exec_options()
-	  because cannot restore after spawn. we'll fix this later.
-
-Mon May 12 18:16:44 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_spawn_internal): need to call run_exec_options() before
-	  spawn if the platform doesn't have fork. [ruby-dev:34647]
-
-Mon May 12 15:20:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (ruby_vm_xmalloc): increase malloc_increase only if malloc
-	  succeeds.  failed malloc size can be huge.  it may increase
-	  malloc_limit too big which cause less GC and memory full.
-	  (ruby_vm_xrealloc): ditto.
-	  (rb_objspace): make params.limit and params.increase size_t.
-
-Mon May 12 15:04:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_prepare_re): made non static with small refactoring.
-
-	* ext/strscan/strscan.c (strscan_do_scan): should adjust encoding
-	  before regex searching.
-
-Mon May 12 13:57:19 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (is_defined): add NODE_OP_ASGN_{OR,AND}.  "defined?(a||=1)"
-	  should not operate assignment.  [ruby-dev:34645]
-
-Mon May 12 13:29:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (bigzero_p): check from MSB to LSB.  [ruby-dev:34649]
-
-Mon May 12 12:32:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (RUBYOPT): affected BASERUBY too.  [ruby-talk:301514]
-
-Mon May 12 12:27:55 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (assign_heap_slot): fix condition for number of objects in
-	  a heap.
-
-Mon May 12 12:24:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_to_i): really removed.  [ruby-dev:34641]
-
-Mon May 12 11:15:55 2008  Yuki Sonoda (Yugui) <yugui@yugui.jp>
-
-	* gc.c (assign_heap_slot):  put the binary search routine in order.
-
-Mon May 12 10:52:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_init_gems), gem_prelude.rb: check if Gem is defined
-	  instead of Gem::Enable.
-
-	* gem_prelude.rb (load_full_rubygems_library, const_missing): prevent
-	  infinite recursion.  [ruby-dev:34539]
-
-Sun May 11 23:19:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (all_iter_i, any_iter_i): reduced duplicated code.
-
-Sun May 11 22:54:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/runner.rb (main): leave -I options for purelib.rb
-	  untouched.
-
-	* bootstraptest/runner.rb (main): handle relative path -r options.
-
-Sun May 11 19:04:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_thread.rb: kill and join temporal threads that are
-	  created in each test.
-
-Sun May 11 17:58:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_process.rb (TestProcess#with_stdin): defined.
-	  (TestProcess#test_argv0_noarg): don't use redirect_fds.
-	  [ruby-dev:34647]
-
-Sun May 11 17:57:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MINIRUBY): should not include extension library path.
-
-Sun May 11 14:40:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (SIZET2NUM): new macro.
-	  (NUM2SIZET): new macro.
-
-	* gc.c (struct rb_objspace): use size_t for increment, length and
-	  used for 64bit.
-	  (allocate_heaps): ditto.
-	  (assign_heap_slot): ditto.
-	  (set_heaps_increment): ditto.
-	  (gc_mark_all): ditto.
-	  (is_pointer_to_heap): ditto.
-	  (free_unused_heaps): ditto.
-	  (gc_sweep): ditto.
-	  (os_obj_of): ditto.
-	  (rb_gc_call_finalizer_at_exit): ditto.
-	  (count_objects): ditto.
-
-Sun May 11 13:14:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* thread.c (thread_cleanup_func_before_exec): extracted from
-	  thread_cleanup_func not to touch pthread data.
-	  pthread_cond_destroy in forked process may cause deadlock on
-	  Debian GNU/Linux Etch on x86, x86-64 and IA64.
-	  this doesn't cause resource leak because the process will exec soon.
-	  (terminate_atfork_before_exec_i): defined.
-	  (rb_thread_atfork_before_exec): defined.
-
-	* include/ruby/intern.h (rb_thread_atfork_before_exec): declared.
-
-	* process.c (rb_exec_atfork): call rb_thread_atfork_before_exec
-	  instead of rb_thread_atfork.
-
-	* io.c (popen_exec): call rb_thread_atfork_before_exec instead of
-	  rb_thread_atfork.
-
-Sat May 10 22:14:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): single '^' does not mean negation.
-	  [ruby-dev:34632]
-
-	* string.c (tr_trans): should check src size, not str size.
-	  [ruby-dev:34637]
-
-	* string.c (tr_trans): should not turn on modify flag if no
-	  modification happens.  [ruby-dev:34631]
-
-Sat May 10 18:11:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_line): zero length record separator should
-	  split a string into paragraphs.  [ruby-dev:34586]
-
-	* string.c (rb_str_each_line): RDoc updated.
-
-Sat May 10 11:36:20 2008  Tanaka Akira  <akr@fsij.org>
-
-	* vm.c (env_mark): mark env->block.self.  prevent SEGV when GC occur
-	  in prepare_iseq_build with gcc version 3.4.6 [FreeBSD] 20060305 on
-	  FreeBSD/amd64.
-
-Fri May  9 19:16:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (timeofday): use monotonic clock.  based on a patch
-	  from zimbatm <zimbatm at oree.ch> in [ruby-core:16627].
-
-Fri May  9 07:47:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* cont.c (cont_restore_0): dynamic stack direction code should be
-	  consistent with static one.  [ruby-talk:301152]
-
-Fri May  9 00:03:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): operator assignment "a += b rescue c" should be
-	  parsed as "a += (b rescue c)" just like normal assignment.
-	  [ruby-talk:301000]
-
-Thu May  8 18:14:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_and): bit-wise operation should not take float
-	  values.  [ruby-dev:34612]
-
-	* bignum.c (rb_big_or): ditto.
-
-	* bignum.c (rb_big_xor): ditto.
-
-Thu May  8 17:44:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, ext/extmk.rb, lib/mkmf.rb: use absolute path for RUBYOPT.
-
-	* file.c (rb_find_file_ext): guard load_path from GC.
-	  gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21) optimizes
-	  load_path by holding only RARRAY_LEN(load_path) and
-	  RARRAY_PTR(load_path) in registers on IA64 GNU/Linux Etch.
-
-Thu May  8 16:41:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MINIRUBY), common.mk (RUBYOPT): add purelib.rb.
-	  [ruby-core:16642]
-
-Thu May  8 16:00:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): ! and ? at the bottom are no longer part
-	  of valid symbol names.  [ruby-dev:34590]
-
-Thu May  8 15:36:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* thread.c (rb_gc_save_machine_context): call FLUSH_REGISTER_WINDOWS
-	  to mark the register stack from GC on another thread.
-
-Thu May  8 15:14:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_sort_bang): freeze temporary array.
-
-Thu May  8 13:19:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (rb_thread_mark): mark stat_insn_usage only when ptr is not
-	  null.
-
-Thu May  8 10:44:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (sort_reentered): reentered check may be called from
-	  Array#sort.
-
-Thu May  8 09:51:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (sort_1, sort_2): check for reentered and if elements are
-	  accessible.  [ruby-core:16679]
-
-Thu May  8 06:43:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_find_exe_r, dln_find_file_r): reentrant versions.
-
-	* file.c (rb_find_file_ext, rb_find_file), process.c (proc_exec_v),
-	  (rb_proc_exec, proc_spawn_v, proc_spawn), ruby.c (process_options):
-	  use reentrant versions.
-
-Thu May  8 06:27:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_key_p): thread local storage stores ID.
-
-Thu May  8 01:10:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): should squeeze properly.  [ruby-dev:34587]
-
-	* string.c (tr_trans): had a bug in treating multi-byte character
-	  replacement.
-
-	* string.c (rb_str_delete_bang): need not to do anything for empty
-	  strings.
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb::test_str_delete): add
-	  test for empty receiver.
-
-Wed May  7 20:19:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (process_options, ruby_set_argv): set encoding of rb_argv
-	  after Init_prelude() because cannot load encoding extensions before
-	  it.
-
-Wed May  7 20:00:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (bit_coerce): float should not be a valid operand of
-	  bitwise operations.  [ruby-dev:34583]
-
-Wed May  7 19:35:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_thread_key_p): should always convert symbol to ID.
-	  [ruby-dev:34588]
-
-Wed May  7 19:30:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_divide): float division should floor() before
-	  rounding into integer.  [ruby-dev:34584]
-
-Wed May  7 18:02:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_to_i): remove obsolete method.  preparation for
-	  symbol GC.
-
-	* numeric.c (fix_to_sym): ditto.
-
-	* numeric.c (fix_id2name): ditto.
-
-Wed May  7 17:43:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_puts_ary): check recursion first.  [ruby-dev:34580]
-
-Wed May  7 17:41:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.c (vm_eval_body): initialize retval.  [ruby-dev:34576]
-
-Wed May  7 13:02:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_fdiv): flo.fdiv(NaN) should result NaN.
-
-	* numeric.c (num_quo): renamed and moved from bignum.c.
-	  [ruby-dev:34582]
-
-	* bignum.c (rb_big_fdiv): update RDoc description
-
-	* rational.c (nurat_s_new_m): small refactoring.
-
-	* bignum.c (rb_big2dbl): no need for forceful warning when
-	  converting to float.  overflow is a nature of float values.
-
-Wed May  7 00:54:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzreader_gets): may cause infinite loop.
-	  a patch from Kouya <kouyataifu4 at gmail.com> in
-	  [ruby-reference-manual:762].
-
-Tue May  6 02:08:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/io/nonblock/test_flush.rb: don't set Thread.abort_on_exception.
-
-	* test/net/imap/test_imap.rb: ensure disconnecting imap to terminate
-	  receiver thread.
-
-Tue May  6 00:29:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* iseq.c (insn_operand_intern): should handle Qundef embedded in
-	  operand.  [ruby-core:16656]
-
-Tue May  6 00:00:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): should call compile_cpath() for
-	  modules as well.  [ruby-dev:34585]
-
-	* insns.def (defineclass): add undef handling.
-
-Mon May  5 23:49:40 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (defineclass): was using wrong variable.  [ruby-dev:34592]
-
-Mon May  5 20:07:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fflush): IO#flush problem within threads.  a patch from
-	  <s.wanabe at gmail.com> in [ruby-dev:34595].
-
-Mon May  5 19:58:44 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): protect some expression from
-	  segmentation fault.  a patch from wanabe <s.wanabe at gmail.com>
-	  in [ruby-dev:34593].
-
-Mon May  5 19:49:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_s_def): Struct.new(0) should not SEGV.
-	  based on the patch from wanabe <s.wanabe at gmail.com> in
-	  [ruby-dev:34594].
-
-	* struct.c (make_struct): call to_str on name object.
-
-Mon May  5 17:17:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (ruby_cleanup): wrap ruby_finalize_0 by SAVE_ROOT_JMPBUF to
-	  avoid SEGV by at_exit { Fiber.new{}.resume } on IA64.
-
-Mon May  5 12:12:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_slice_bang): should adjust length before making
-	  sub-array.
-
-Mon May  5 11:36:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_dup): should dupe corresponding information.
-	  [ruby-dev:34581]
-
-Mon May  5 11:13:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (compile_cpath): use Qundef to denote cbase lookup.
-
-	* insns.def (defineclass): Qundef is passed for cbase.
-
-	* insns.def (setconstant): ditto.
-
-	* vm_insnhelper.c (vm_check_if_namespace): use rb_inspect()
-	  instead of rb_obj_as_string() for better description.
-
-Mon May  5 02:10:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (set_heaps_increment): fix memory allocation strategy by
-	  determining heaps_inc from heaps_used, not objects_delta.
-	  (struct rb_objspace): delta removed.  change increment, length and
-	  used to long for LP64.
-	  (objects_delta): removed.
-	  (allocate_heaps): add next_heaps_length argument.
-	  (init_heap): renamed from add_heap.
-	  (garbage_collect): use heaps_increment in dont_gc.
-
-Sun May  4 21:09:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/getoptlong.rb: use $stderr instead of $deferr.
-
-Sun May  4 16:04:28 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (obj2nsec): fix string argument.
-
-Sun May  4 14:29:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (rb_obj_respond_to): check the result of respond_to? method
-	  by RTEST.
-
-Sun May  4 12:57:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_each_line): return original string.
-
-Sat May  3 20:57:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/envutil.rb (Test::Unit::Assertions#assert_normal_exit):
-	  new method.
-
-Sat May  3 18:10:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_timespec): raise TypeError for nil and other objects
-	  which has no divmod method.
-
-Fri May  2 23:59:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (internal_read_func, internal_write_func): split from
-	  internal_io_func.
-
-Fri May  2 23:55:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* variable.c (rb_define_hooked_variable): guard *var from GC to
-	  prevent collecting argf under RUBY_DEBUG=gc_stress.
-
-Fri May  2 17:29:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): call to_int if step is not a numeric
-	  value.  [ruby-dev:34575]
-
-Fri May  2 16:10:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): do not forcefully convert steps into
-	  integers.  [ruby-dev:34571]
-
-Fri May  2 14:52:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el: move fontifying code from hook.  a patch from
-	  Phil Hagelberg <phil at hagelb.org> in [ruby-core:16636].
-
-Fri May  2 14:10:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): step may be bignum.
-
-Fri May  2 13:52:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (Init_Regexp): remove MatchData#select.  [ruby-dev:34563]
-
-Thu May  1 23:59:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_divide), numeric.c (fix_divide): check for result
-	  domain.  [ruby-dev:34559]
-
-Thu May  1 23:57:06 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb:  This patch from Brian Candler adds a FailEOF mode which
-	  can be activated to have net/telnet raise EOFError exceptions when the
-	  remote connection is closed.  The default behavior remains unchanged though.
-
-Thu May  1 23:43:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_step): check if step can be converted to an integer.
-	  [ruby-dev:34558]
-
-	* range.c (range_step): allow float step bigger than zero but less
-	  than one.  [ruby-dev:34557]
-
-Thu May  1 23:20:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_big_divide): return an integer for idiv.
-	  [ruby-dev:34553]
-
-Thu May  1 20:47:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_s_create): should access converted hash value.
-	  [ruby-dev:34555]
-
-Thu May  1 20:31:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_parse.rb (TestParse::test_void_expr_stmts_value):
-	  shut up warning.
-
-	* rational.c (nurat_to_f): no need for forceful warning when
-	  converting to float.  overflow is a nature of float values.
-
-Thu May  1 16:10:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (env_delete_if): return enumerator if no block given.
-	  [ruby-dev:34554]
-
-Wed Apr 30 21:36:40 2008  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/erb.rb (url_encode): [ruby-dev:34497] ERB::Util#url_encode
-	  bug fix. Reported by rubikitch.
-
-	* test/erb/test_erb.rb: ditto
-
-Wed Apr 30 20:11:36 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb: Fixing a bug where line endings would not be properly
-	  escaped when the two character ending was broken up into separate TCP
-	  packets.  Issue reported and patched by Brian Candler.
-
-Wed Apr 30 18:03:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_load_path), vm_core.h (rb_vm_t): moved to VM.
-
-	* load.c (rb_get_load_path): returns absolute load path.
-
-	* load.c (load_path_getter): $LOAD_PATH getter.
-
-	* file.c (rb_find_file_ext, rb_find_file), ruby.c (push_include,
-	  ruby_init_loadpath): use the accessor.
-
-	* vm.c (rb_vm_mark): mark load_path.
-
-Wed Apr 30 17:47:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_search): use local variable.  a patch from wanabe
-	  <s.wanabe AT gmail.com> in [ruby-dev:34537].  [ruby-dev:34492]
-
-Wed Apr 30 16:10:18 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval_intern.h: specify the values of the enumeration constants
-	  explicitly.  [ruby-dev:34489]
-
-Wed Apr 30 12:32:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (check_exec_redirect_fd): prohibit duplex IO.
-	  (check_exec_fds): record maxhint even if close_others is not
-	  specified.
-	  (rb_exec_arg_fixup): renamed from rb_exec_arg_fix.
-
-Mon Apr 28 20:24:27 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_marshal_load): checks the given
-	  denominator. [ruby-dev:34536]
-
-Mon Apr 28 14:21:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (POSFIXABLE): use FIXNUM_MAX+1 instead of
-	  FIXNUM_MAX to make it possible to convert to double accurately on
-	  environments with 64bit VALUE and 64bit double.
-	  It assumes FLT_RADIX is 2.
-	  fix RubyForge bug #14102.
-
-Mon Apr 28 12:48:57 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (rb_exec_arg_addopt, rb_exec_arg_addopt): now can specify
-	  close_exec on having no fork environment (but still meaningless).
-
-Mon Apr 28 11:11:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (run_exec_options): don't call FIX2INT for nil.
-
-Mon Apr 28 11:11:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (method_name): should return symbols instead of strings.
-	  [ruby-dev:34531]
-
-Mon Apr 28 09:02:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_exec_arg_init): declared.
-	  (rb_exec_arg_addopt): declared.
-	  (rb_exec_arg_fix): declared.
-	  (rb_exec_initarg): removed.
-	  (rb_exec_getargs): removed.
-	  (rb_exec_initarg2): removed.
-
-	* io.c (struct popen_arg): make execarg as a pointer.
-	  (popen_exec): follow popen_arg change.
-	  (pipe_open): add eargp argument.  extract argc and argv from eargp.
-	  use rb_exec_arg_addopt to add redirect options.
-	  (pipe_open_v): set up struct rb_exec_arg.
-	  (pipe_open_s): set up struct rb_exec_arg.
-
-	* process.c (rb_exec_arg_addopt): new function extracted from
-	  check_exec_options_i.
-	  (check_exec_options_i): use rb_exec_arg_addopt.
-	  (rb_check_exec_options): opthash is always a hash now.
-	  (rb_exec_getargs): make it static.
-	  (rb_exec_fillarg): renamed from rb_exec_initarg2.  don't set up
-	  redirect_fds.
-	  (rb_exec_arg_init): new function.
-	  (rb_exec_arg_fix): new function.
-	  (rb_f_exec): use rb_exec_arg_init and rb_exec_arg_fix.  use
-	  rb_exec_arg_addopt to set close_others option.
-	  (run_exec_options): make close_others by default.
-	  (rb_spawn_internal): use rb_exec_arg_init and rb_exec_arg_fix.  use
-	  rb_exec_arg_addopt to set close_others option.
-
-Sun Apr 27 18:59:04 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_expt): use f_rational_new2. [ruby-dev:34524]
-
-Sun Apr 27 15:23:40 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (gc_count): add a GC.count method.  This method returns
-	  a GC invoking count.
-
-Sun Apr 27 12:20:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_vm_t), gc.c (rb_objspace, rb_newobj), vm.c
-	  (Init_BareVM): per-VM object space support, which is disabled now.
-
-	* gc.c (rb_objspace_alloc), vm.c (Init_BareVM): should not use ruby
-	  malloc here.
-
-	* gc.c (garbage_collect, etc): performance improvement by passing the
-	  reference instead of referring the global variable in each functions.
-
-Sun Apr 27 08:06:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (ruby_set_argv): ARGV should be locale encoding.
-	  [ruby-list:44861]
-
-Sun Apr 27 01:46:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb (Open3.popen3w): removed.
-	  (Open3.popen3): notice wait_thr.
-
-Sun Apr 27 01:13:05 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc, test/rdoc:  Update to RDoc 2.0.0 r56.
-
-Sat Apr 26 21:30:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_hash_dup): declared.
-
-	* hash.c (rb_hash_dup): new function.
-
-	* process.c (rb_spawn_internal): don't modify option hash.
-
-Sat Apr 26 18:36:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c, signal.c, thread.c, thread_win32.c, include/ruby/intern.h:
-	  suppress warnings.
-
-Sat Apr 26 17:42:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (builtin_types), gc.c (count_objects): added Complex and
-	  Rational.
-
-Sat Apr 26 17:35:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (rb_eNOERROR): renamed.
-
-Sat Apr 26 17:30:11 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h, gc.c: remove T_BLOCK.
-
-	* include/ruby/ruby.h: re-number T_xxx.
-
-Sat Apr 26 17:31:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_cProcessTms, rb_cProcessStatus): renamed.
-
-	* error.c (builtin_types), signal.c (siglist), st.c (primes),
-	  struct.c (ref_func), time.c (months): constified.
-
-Sat Apr 26 13:00:41 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open3.rb: double fork is replaced by spawn with Process.detach.
-	  (Open3.popen3w): new method to access the thread returned by
-	  Process.detach.
-
-Sat Apr 26 00:47:43 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rb_spawn_internal): new function to specify
-	  default_close_others.
-	  (rb_spawn): specify default_close_others true.
-	  (rb_f_system): call rb_spawn_internal with default_close_others as
-	  false.
-
-Sat Apr 26 12:26:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_each): use INT2FIX() for fixnum values.
-
-Fri Apr 25 17:56:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (free_unused_heaps): preserve last used heap segment to
-	  reduce malloc() call.
-
-Fri Apr 25 17:54:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (HEAP_SIZE): use smaller heap segment (2K) for more chance
-	  to be freed.  based on patch from authorNari <authornari at gmail.com>.
-
-	* gc.c (rb_newobj_from_heap): eventually allocate heap segments.
-
-Fri Apr 25 15:35:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_spawn): rb_exec_initarg() returns new argc and argv in
-	  earg.
-
-Fri Apr 25 12:37:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (flatten): returns an instance of same class.
-	  [ruby-core:16554]
-
-Fri Apr 25 10:52:27 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h: define mode_t for umask.
-
-	* process.c (check_exec_options_i, check_exec_fds, run_exec_options):
-	  support "close_others" only when fork(2) is available.
-
-Fri Apr 25 00:16:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c: include sys/stat.h for umask.
-
-Thu Apr 24 23:25:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_env_clear): declared.
-	  (rb_io_mode_modenum): declared.
-	  (rb_close_before_exec): declared.
-	  (struct rb_exec_arg): add options and redirect_fds field.
-	  (rb_check_argv): removed.
-	  (rb_exec_initarg): declared.
-	  (rb_exec_getargs): declared.
-	  (rb_exec_initarg2): declared.
-	  (rb_fork): add third argument: fds.
-
-	* io.c (max_file_descriptor): new static variable to record maximum
-	  file descriptor ruby used.
-	  (UPDATE_MAXFD): new macro.
-	  (UPDATE_MAXFD_PIPE): new macro.
-	  (rb_io_mode_modenum): externed.
-	  (rb_sysopen): update max_file_descriptor.
-	  (rb_close_before_exec): new function.
-	  (popen_exec): redirection removed because it is done by extended
-	  spawn mechanism.
-	  (pipe_open): generate a hash for spawn options to specify
-	  redirections.
-	  (pipe_open_v): use rb_exec_getargs.
-	  (pipe_open_s): use rb_exec_getargs.
-	  (rb_io_initialize): update max_file_descriptor.
-
-	* process.c (hide_obj): new function.
-	  (check_exec_redirect_fd): new function.
-	  (check_exec_redirect): new function.
-	  (check_exec_options_i): new function.
-	  (check_exec_fds): new function.
-	  (rb_check_exec_options): new function.
-	  (check_exec_env_i): new function.
-	  (rb_check_exec_env): new function.
-	  (rb_exec_getargs): new function.
-	  (rb_exec_initarg2): new function.
-	  (rb_exec_initarg): new function.
-	  (rb_f_exec): use rb_exec_initarg.
-	  (intcmp): new function.
-	  (run_exec_dup2): new function.
-	  (run_exec_close): new function.
-	  (run_exec_open): new function.
-	  (run_exec_pgroup): new function.
-	  (run_exec_rlimit): new function.
-	  (run_exec_options): new function.
-	  (rb_exec): call run_exec_options.
-	  (move_fds_to_avoid_crash): new function.
-	  (pipe_nocrash): new function.
-	  (rb_fork): use pipe_nocrash to avoid file descriptor conflicts.
-	  (rb_spawn): use rb_exec_initarg.
-	  (rlimit_resource_name2int): extracted from rlimit_resource_type.
-	  (rlimit_type_by_hname): new function.
-	  (rlimit_type_by_lname): new function.
-	  (rlimit_resource_type): use rlimit_type_by_hname.
-	  (proc_daemon): add fds argument for rb_fork.
-
-	* hash.c (rb_env_clear): renamed from env_clear and externed.
-
-	[ruby-dev:34086]
-
-Thu Apr 24 23:00:58 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_thread.rb: fix typos.
-
-	* test/ruby/envutil.rb (rubyexec): move Open3.popen3 call into timeout
-	  block.
-
-Thu Apr 24 22:34:52 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_comparable.rb: new tests for Comparable, to achieve
-	  100% test coverage of compar.c.
-
-Thu Apr 24 17:19:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (process_options): set safe_level before loading script.
-	  [ruby-dev:34421]
-
-Thu Apr 24 14:15:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dln.c (dln_find_1): prior files with extensions to files sans
-	  extensions.  [ruby-core:16517]
-
-Thu Apr 24 00:26:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/descriptions.rb: fixed wrong class nestings.
-
-Thu Apr 24 00:20:01 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_settracefunc.rb: add a test for set_trace_func.
-
-	* test/ruby/envutil.rb: move "rubyexec" method from test_rubyoptions.rb.
-
-	* test/ruby/test_rubyoptions.rb: use rubyexec in envutil.rb.
-
-	* test/ruby/test_thread.rb: add tests to achieve over 90% test coverage
-	  of thread.c.
-
-Wed Apr 23 15:28:52 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/gdbm/test_gdbm.rb (TestGDBM#test_s_open_no_create): failed
-	  notice moved from comment to assertion message. [ruby-dev:29127]
-
-Wed Apr 23 11:49:54 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/set.rb (Set#each, SortedSet#each, TC_Set#test_each): Return
-	  an enumerator if no block is given.
-
-Wed Apr 23 00:36:03 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/openssl/test_ssl.rb (start_server): add timeout to server.join.
-
-Wed Apr 23 00:18:45 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_symbol.rb (TestSymbol#test_to_proc): Improve
-	  tests of Symbol#to_proc.
-
-Tue Apr 22 22:40:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/drb/drb.rb (DRb::DRbServer::check_insecure_method): should
-	  check method names by symbols, not by strings.  a patch from
-	  Kazuhiro NISHIYAMA <zn at mbf.nifty.com> in [ruby-dev:34487].
-
-Tue Apr 22 22:15:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-{case,label}-indent): up list from
-	  indentation point.
-
-Tue Apr 22 21:09:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (score_table_A0, score_table_F0):
-	  type of content is unsigned char.
-
-	* ext/nkf/nkf-utf8/nkf.c (push_broken_buf): 'c' is nkf_char.
-
-	* ext/nkf/nkf-utf8/nkf.c (push_broken_buf): enc is 0 or pointer.
-
-	* ext/nkf//nkf.c (options): type of option is unsigned char.
-
-Tue Apr 22 20:51:58 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (z_conv): characters must be nkf_char.
-
-Tue Apr 22 19:23:05 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c (enumerator_initialize): Remove an undocumented
-	  feature (passing a block to the constructor) that's broken.
-	  This is not what I intended.
-
-Tue Apr 22 17:54:05 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* vm_core.h (exec_event_hooks): ``inline'' is a type modifier, not
-	  a type itself.
-
-Tue Apr 22 16:24:27 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): do not use C++ comments.
-
-Tue Apr 22 16:23:53 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* configure.in: use AC_USE_SYSTEM_EXTENSIONS.
-
-Tue Apr 22 16:23:16 2008  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* vm_evalbody.c (DECL_SC_REG): use __asm__ instead.
-
-Tue Apr 22 16:18:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_evalbody.c (DECL_SC_REG): typo fixed.
-
-Tue Apr 22 15:25:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (struct timespec): needs time.h according to POSIX.
-
-Tue Apr 22 13:19:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_thread_stop_timer_thread): should clear
-	  timer_thread_id after stopping it.
-
-Tue Apr 22 13:12:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_join): remove the current thread from the join list
-	  of the target thread.
-
-Tue Apr 22 12:03:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_get_ev_const): search from the base klass if it
-	  is given.
-
-Tue Apr 22 09:58:13 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c: avoid warnings.
-
-Tue Apr 22 09:56:51 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* file.c (eaccess): workaround for recent msvcrt's behavior.
-	  [ruby-core:16460]
-
-Mon Apr 21 19:08:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_body): call rb_io_check_readable and
-	  rb_io_check_writable.
-
-Mon Apr 21 17:45:27 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ext/dbm/dbm.c (fdbm_each_value, fdbm_each_key, fdbm_each_pair):
-	  GDBM#{each,each_pair,each_key,each_value}: Return an enumerator
-	  if no block is given.
-
-	* ext/gdbm/gdbm.c (fgdbm_each_value, fgdbm_each_key,
-	  fgdbm_each_pair): GDBM#{each,each_pair,each_key,each_value}:
-	  Return an enumerator if no block is given.
-
-	* ext/openssl/ossl_config.c (ossl_config_each):
-	  OpenSSL::Config#each: Return an enumerator if no block is given.
-
-	* ext/readline/readline.c (hist_each): Readline::HISTORY#each:
-	  Return an enumerator if no block is given.
-
-	* ext/sdbm/init.c (fsdbm_each_value, fsdbm_each_key,
-	  fsdbm_each_pair): SDBM#{each,each_pair,each_key,each_value}:
-	  Return an enumerator if no block is given.
-
-	* ext/stringio/stringio.c (strio_each_byte, strio_each):
-	  StringIO#{each,each_line,each_byte}: Return an enumerator if no
-	  block is given.
-
-	* ext/stringio/stringio.c (Init_stringio): Add #lines and #bytes,
-	  which are aliases to #each_line and #each_byte, respectively.
-
-	* ext/win32ole/win32ole.c (fole_each): WIN32OLE#each: Return an
-	  enumerator if no block is given.
-
-	* ext/zlib/zlib.c (rb_gzreader_each_byte, rb_gzreader_each):
-	  Zlib::GzipReader#{each,each_line,each_byte}: Return an
-	  enumerator if no block is given.
-
-	* ext/zlib/zlib.c (Init_zlib): Add Zlib::GzipReader#lines and
-	  #bytes, which are aliases to #each_line and #each_byte,
-	  respectively.
-
-Mon Apr 21 17:01:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (rb_iseq_compile_with_option): check if src is a string.
-	  [ruby-core:16453]
-
-Mon Apr 21 16:06:47 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_init): preserve the method name in ID.
-
-	* enumerator.c (enumerator_each): need not to call rb_to_id().
-
-	* enumerator.c (enumerator_with_index): ditto.
-
-Mon Apr 21 11:00:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): capture exception during defined?
-	  evaluation.  a patch from wanabe <s.wanabe at gmail.com> in
-	  [ruby-dev:34461].  [ruby-core:16010]
-
-Mon Apr 21 10:06:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c: should include <errno.h> to refer to errno.
-
-Mon Apr 21 09:58:04 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* time.c (rb_strftime): check errno to detect strftime(3)'s error.
-	  this is workaround for recent version of MSVCRT.
-	  [ruby-dev:34456]
-
-Mon Apr 21 08:54:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* gc.c (ruby_xmalloc): use size_t for malloc argument instead of long.
-
-Sun Apr 20 21:00:21 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c, include/ruby/ruby.h: Export rb_cEnumerator.
-
-Sun Apr 20 20:47:50 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enumerator.c: Resolve the method every time an enumeration
-	  method is run, not once when the enumerator is initialized as it
-	  was before, so that method_missing() and method (re)definition
-	  afterwards are both in effect; pointed out in: [ruby-core:16441]
-
-Sun Apr 20 15:11:00 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_rbuf_to_dst): removed.
-	  (copy_stream_fallback_body): don't bypass write method.
-	  (copy_stream_body): simplified.
-
-Sun Apr 20 15:01:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (struct iseq_compile_data): moved label_no from
-	  new_label_body().
-
-	* compile.c (iseq_set_exception_table): allocates catch_table only
-	  when entries exist.
-
-	* compile.c (struct iseq_link_element, struct iseq_insn_data): made
-	  enum for debuggers.
-
-Sun Apr 20 14:44:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): fix for splat in when and rescue.
-	  a patch from wanabe <s.wanabe AT gmail.com> in [ruby-dev:34429].
-	  [ruby-core:14537]
-
-Sun Apr 20 13:55:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_fallback): write directly (bypassing write method)
-	  if possible.
-
-Sun Apr 20 12:49:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_fallback): read directly (bypassing readpartial
-	  method) if possible.
-
-Sun Apr 20 04:45:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (copy_stream_body): use readpartial and write method for
-	  non-IOs such as StringIO and ARGF.
-
-Fri Apr 18 20:57:33 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_array.rb: add tests to achieve over 95% test coverage
-	  of array.c.
-
-Fri Apr 18 17:37:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_gc_mark_locations): get rid of underflow.
-
-	* gc.c (mark_current_machine_context): check if the main thread stack
-	  position may shrink under the initialized position.  [ruby-core:16436]
-
-Thu Apr 17 22:20:52 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enc/trans/utf_16_32.c (fun_so_to_utf_16be, fun_so_to_utf_16le): add
-	  parentheses to remove warnings of gcc.
-
-	* io.c (rb_io_getc): remove unused variables.
-
-	* compile.c (NODE_NEXT, NODE_REDO): remove unused labels.
-
-	* ext/nkf/nkf.c (rb_nkf_convert): remove unused variables.
-
-	* ext/syck/rubyext.c (syck_resolver_initialize,
-	  syck_resolver_detect_implicit, syck_emitter_emit): remove unused
-	  variables.
-
-Thu Apr 17 20:12:47 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rubyoptions.rb (test_search): enable some assertions.
-
-	* test/ruby/test_rubyoptions.rb: flunk message in win32.
-
-Thu Apr 17 16:07:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_rubyoptions.rb (ruby): run in C locale.
-
-	* test/ruby/test_rubyoptions.rb (test_encoding): --encoding does not
-	  affect source code.
-
-Thu Apr 17 00:45:41 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_process.rb (test_rlimit_nofile): reset RLIMIT_NOFILE
-	  before exit (for gcov).
-
-	* test/ruby/test_rubyoptions.rb: new tests for option of ruby
-	  interpreter, to achieve over 95% test coverage of ruby.c.
-
-Wed Apr 16 02:40:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): preludes and parser need to run in safe
-	  level 0.  [ruby-dev:34407]
-
-Wed Apr 16 02:26:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): dln_find_file returns the pointer to a
-	  static buffer, so should copy it.  [ruby-dev:34409]
-
-Tue Apr 15 23:08:46 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/xmlrpc/client.rb: fix cookie handling. [ruby-dev:34403]
-
-	* test/xmlrpc/test_cookie.rb: add a test for the above fix.
-
-Tue Apr 15 19:20:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c: #undef rb_argv moved before #define.
-
-Tue Apr 15 18:02:17 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_argv): replaced with rb_get_argv().
-	  [ruby-Bugs-19514]
-
-Tue Apr 15 17:10:59 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/net/http.rb, lib/net/smtp.rb, lib/net/pop.rb: update
-	  URLs of Japanese documents.
-
-Tue Apr 15 16:45:14 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_symbol.rb (TestSymbol#test_to_proc): add tests.
-
-Tue Apr 15 15:38:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-encoding-map): added shift-jis for older
-	  versions.
-
-	* misc/ruby-mode.el (ruby-mode-set-encoding):
-	  coding-system-to-mime-charset is not a standard function.
-	  [carbon-emacs:795]
-	  fix for the case that magic comment exists but coding system is
-	  absent.
-
-	* misc/ruby-mode.el (ruby-mode): use write-contents-functions or
-	  write-contents-hooks for older versions.
-
-Tue Apr 15 07:21:21 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_div): [ruby-dev:34357]
-
-	* complex.c (nucomp_abs): use hypot.
-
-	* complex.c (nucomp_quo): do not force conversion.
-
-	* test/ruby/test_complex.rb: omitted some meaningless tests.
-
-Mon Apr 14 23:25:50 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_objectspace.rb: add a test for
-	  ObjectSpace.count_objects.
-
-Mon Apr 14 22:44:24 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (SET_EXTERNAL_ENCODING): avoid call rb_enc_check() on
-	  half-baked result string.
-
-	* re.c (rb_reg_search): make search reentrant.  [ruby-dev:34223]
-
-	* test/ruby/test_parse.rb (TestParse::test_global_variable):
-	  should preserve $& variable.
-
-Mon Apr 14 17:23:27 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* hash.c (rb_hash_delete_if, rb_hash_reject_bang, env_delete_if,
-	  env_reject_bang): Return an enumerator if no block is given.
-
-Mon Apr 14 14:33:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c, compile.h (compile_debug): made runtime option.
-
-	* debug.c (ruby_debug_print_indent): returns if debug_level exceeds
-	  the threshold.
-
-	* debug.c (ruby_debug_printf): printf to stderr.
-
-	* iseq.c (make_compile_option, make_compile_option_value): added
-	  debug_level option.
-
-	* vm_core.h (rb_compile_option_t): added debug_level.
-
-	* vm_core.h (struct iseq_compile_data): added node_level.
-
-Mon Apr 14 12:52:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (Init_stack): use ruby_init_stack.  [ruby-dev:34350]
-
-	* gc.c (rb_objspace_t): packed globals.  [ruby-dev:34348]
-
-	* gc.c (finalizers): removed.  [ruby-dev:34349]
-
-Mon Apr 14 11:30:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (ary_new): new integer overflow check condition.
-	  suggested by TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com> in
-	  [ruby-dev:34156].
-
-	* array.c (rb_ary_initialize): ditto.
-
-Mon Apr 14 00:51:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_parse.rb: add tests to achieve over 95% test coverage
-	  of parse.y.
-
-Sun Apr 13 23:53:58 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (enum_cycle): Make Enumerable#cycle do a finite loop when
-	  the number of cycles is specified.
-
-	* array.c (rb_ary_cycle): Ditto for Array#cycle.
-
-Sun Apr 13 18:52:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (lock_func): should not check interrupts in
-	  blocking region.  [ruby-dev:34378]
-
-Sat Apr 12 12:41:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_exec_node, ruby_run_node), ruby.c (process_options):
-	  use iseq instead of NODE.
-
-	* gc.c (source_filenames): removed.
-
-	* include/ruby/intern.h, parse.y (yycompile, parser_mark, parser_free,
-	  ripper_initialize): rb_source_filename() is no longer used.
-
-	* compile.c, compile.h (ERROR_ARGS), parse.y (node_newnode, fixpos,
-	  parser_warn, e_option_supplied, warn_unless_e_option, range_op,
-	  cond0): nd_file is no longer used.
-
-Sat Apr 12 12:17:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* prelude.rb (require_relative): move require_relative from
-	  lib/require_relative.rb.  [ruby-core:16356]
-
-	* lib/require_relative.rb: removed.
-
-Sat Apr 12 05:55:57 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*, test/rubygems*:  Update to RubyGems 1.1.1 r1701.
-
-Sat Apr 12 03:13:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (file_expand_path): set external encoding.
-
-	* file.c (rb_file_s_basename, rb_file_s_dirname, rb_file_s_extname):
-	  copy encoding.
-
-Fri Apr 11 17:35:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (count_i): modified to shut warning up.
-
-Fri Apr 11 17:25:09 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (count_i, count_iter_i, enum_count, enum_find_index):
-	  Reduce code.
-
-Fri Apr 11 17:06:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (find_index_i): modified to shut warning up.
-
-	* enum.c (find_index_iter_i): ditto.
-
-Fri Apr 11 16:44:43 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* enum.c (enum_find_index): Add support for find_index(obj);
-	  [ruby-dev:34313].
-
-	* array.c (rb_ary_index): Define find_index as an alias to index.
-
-Fri Apr 11 16:42:33 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/yaml/store.rb (YAML::load): modified to support empty
-	  database.
-
-Fri Apr 11 08:05:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (w_object): add volatile to avoid potential GC bug.  a
-	  patch from Tomoyuki Chikanaga <chikanag at nippon-control-system.co.jp>
-	  in [ruby-dev:34312].
-
-Thu Apr 10 23:08:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/pstore.rb (PStore::dump, PStore::load): allow subclass
-	  overriding.  [ruby-dev:34305]
-
-	* lib/yaml/store.rb (YAML::Store::marshal_dump_supports_canonical_option?):
-	  add a method to support faster PStore.
-
-Thu Apr 10 20:36:45 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* misc/rdebug.el, misc/README: Remove rdebug.el as per request
-	  from the maintainer and mention the ruby-debug project at
-	  RubyForge in README; bug#19043.
-
-Thu Apr 10 19:41:00 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* eval.c (rb_f_loop): Mention StopIteration in the document.
-
-Thu Apr 10 19:23:55 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_pop_m, rb_ary_shift_m): Update documents for
-	  #pop() and #shift().
-
-	* array.c (rb_ary_slice_bang): Update document.  Assigning
-	  array[*args]= nil no longer removes elements.
-
-Thu Apr 10 16:58:44 2008  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (w_object): TYPE_USERDEF assigns id for ivars first.
-	  [ruby-dev:34159] by nagachika.
-
-Thu Apr 10 15:03:47 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/generator.rb: removed obsolete library.  [ruby-core:16233]
-
-	* test/test_generator.rb: removed as well.  [ruby-dev:34306]
-
-	* lib/pstore.rb: replaced by Hongli Lai's faster version.
-
-Thu Apr 10 10:27:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (native_sleep): sleep_cond is initialized at
-	  creation.  [ruby-Patches-19361].
-
-Wed Apr  9 14:43:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (lock_func): optimized and checks for interrupt_flag.
-	  based on a patch from Sylvain Joyeux in [ruby-Patches-19361] and
-	  [ruby-Patches-19362].
-
-Wed Apr  9 12:12:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/test_thread.rb: new tests from Sylvain Joyeux in
-	  [ruby-Patches-19361].
-
-Tue Apr  8 21:36:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_mutex_sleep): ensures to re-acquire at waking up.
-	  [ruby-Patches-19361]
-
-Tue Apr  8 11:00:14 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/complex.rb: remove Math first before overwriting by CMath.
-
-Tue Apr  8 10:34:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* load.c (rb_require_safe): should check fname path after $SAFE is
-	  properly set.  [ruby-dev:34268]
-
-	* re.c (rb_reg_quote): should always copy the quoting string.
-	  [ruby-core:16235]
-
-Tue Apr  8 10:30:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (prelude.c): depends on enc/prelude.rb.
-
-	* enc/prelude.rb: fixed initial library names.
-
-Tue Apr  8 03:39:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_provided): check expanded path for relative path
-	  features, loading or loaded features are already expanded in 1.9.
-
-	* variable.c (rb_autoload_load): no needs to check if provided before
-	  rb_require_safe.  [ruby-dev:34266]
-
-Mon Apr  7 22:41:21 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* numeric.c: cancelled recent changes (except to remove rdiv).
-
-	* bignum.c: ditto.
-
-	* bignum.c: added rb_big_idiv.
-
-Mon Apr  7 15:51:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_init_db): moved to enc/encdb.c.
-
-	* transcode.c (init_transcoder_table): moved to enc/trans/transdb.c.
-
-	* enc/depend (enc/encdb.o enc/trans/transdb.o): depend on
-	  corresponding headers.
-
-	* common.mk (COMMONOBJS): moved transcode.o from OBJS
-
-Mon Apr  7 12:26:32 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: add a known-bug.
-
-Mon Apr  7 12:15:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_each_func): should not leave a variable
-	  uninitialized, which could cause SEGV.
-
-	* range.c (range_step): removed duplicated and unreachable code.
-
-Mon Apr  7 02:12:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_intern): need not to check if tainted.
-	  [ruby-dev:34219]
-
-Sun Apr  6 09:45:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_tell): check if closed.  [ruby-core:16223]
-
-Sat Apr  5 23:17:20 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/cmath.rb: new.
-
-	* lib/complex.rb: depends lib/cmath.rb.
-
-	* lib/rational.rb: added rdiv.
-
-	* complex.c: removed some math functions.
-
-Sat Apr  5 05:50:57 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/parse_rb.rb: Fix uninitialized variable warnings.
-
-	* lib/rdoc/generator/html.rb: ditto.
-
-	* lib/rdoc/options.rb: Fix shadowed variable warning.
-
-	* lib/webrick/httprequest.rb: Fix redefined method warning.
-
-Sat Apr  5 02:13:52 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_cmpint): moved from compar.c, to check bignum
-	  zero.
-
-Fri Apr  4 23:24:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_memsearch_qs): wrong boundary condition.
-
-	* re.c (rb_memsearch_qs_utf8): ditto.
-
-Fri Apr  4 14:11:36 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_memsearch_qs): wrong boundary condition.  a patch from
-	  wanabe <s.wanabe AT gmail.com> in [ruby-dev:34248].
-
-Fri Apr  4 05:57:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/pop.rb (Net::POP3::do_finish): clear @n_mails and
-	  @n_bytes as well.  [ruby-core:16144]
-
-Fri Apr  4 01:59:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): add step for each iteration if begin and
-	  end are numeric.  [ruby-core:15990]
-
-Fri Apr  4 00:42:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (Init_Bignum): rdiv method removed.  [ruby-dev:34242]
-
-	* complex.c (nucomp_quo): ditto.
-
-	* numeric.c (num_rdiv): ditto.
-
-	* rational.c (nurat_div): ditto.
-
-	* complex.c (nucomp_fdiv): fdiv implementation restored.
-
-	* numeric.c (num_quo): RDoc updated.
-
-Thu Apr  3 21:51:45 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (nucomp_int_check): function for DRY real check.
-
-	* complex.c (nucomp_{add,sub,mul,div,expt}): use rb_num_coerce_bin().
-
-Thu Apr  3 19:59:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (defineclass): check if cbase is a class or a module.
-	  [ruby-core:16118]
-
-Thu Apr  3 14:42:11 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (INSNS): add insns_info.inc.
-
-	* common.mk (INSNS): make incs separately for nmake.
-
-Thu Apr  3 13:20:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (endb.h, transdb.h, prelude.c): depend on $(PREP) and
-	  check if really changed.  [ruby-core:16102]
-
-	* Makefile.in, common.mk, configure.in, {win32,bcc32}/Makefile.sub
-	  (MINIOBJS, ARCHMINIOBJS): separated.
-
-Thu Apr  3 09:00:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_set_sequence, iseq_insns_unification,
-	  insn_data_to_s_detail): constified.
-
-	* iseq.c (insn_operand_intern, ruby_iseq_disasm_insn): ditto.
-
-	* template/{insns_info,opt_sc,optunifs}.inc.tmpl: ditto.
-
-	* tool/instruction.rb (OptUnifsIncGenerator): ditto.
-
-Thu Apr  3 08:46:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_include): add RDoc to describe that comparison
-	  for numeric is done according magnitude of values.
-	  [ruby-core:15907]
-
-Wed Apr  2 22:29:35 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* rational.c (nurat_int_check): function for DRY integer check.
-
-	* numeric.c (num_rdiv): should always return rational number.
-
-	* rational.c (nurat_add, nurat_sub, nurat_mul, nurat_fdiv,
-	  nurat_cmp): use rb_num_coerce_bin().
-
-	* rational.c (nurat_division): does / and rdiv.
-
-	* .gdbinit (rp): no longer use rb_p().
-
-Wed Apr  2 06:52:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* .gdbinit (rp): supports rational and complex numbers.  it's
-	  cheating since it uses rb_p().
-
-Wed Apr  2 06:24:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/node.h: add new constants for rb_call()'s scope.
-
-	* eval.c (iterate_method): use CALL_* scope constant to specify
-	  proper scope value.
-
-	* eval.c (rb_each, rb_apply, rb_funcall, rb_funcall2, rb_funcall3):
-	  ditto.
-
-Tue Apr  1 21:19:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* rational.c: need to include <float.h> just once.
-
-Tue Apr  1 16:40:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (big2dbl): more precise conversion at edge cases.
-	  [ruby-dev:34195]
-
-Tue Apr  1 14:43:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: get rid of empty expansion.
-
-	* configure.in: _setjmp is available but _longjmp is not on mingw.
-
-Tue Apr  1 09:41:22 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile (config.h): need to define RUBY_SETJMP, etc.
-
-Tue Apr  1 07:31:58 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems* test/rubygems*: Import RubyGems 1.1.0.
-
-Tue Apr  1 03:20:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_SETJMP, RUBY_LONGJMP, RUBY_JMP_BUF): prefers
-	  _setjmp over setjmp and sigsetjmp.  [ruby-core:16023]
-	  __builtin_setjmp cannot handle a variable.
-
-	* configure.in (--with-setjmp-type): new option to override the
-	  default rule in the above.
-
-	* eval_intern.h (ruby_setjmp, ruby_longjmp), gc.c (rb_setjmp),
-	  vm_core.h (rb_jmpbuf_t): use RUBY_SETJMP, RUBY_LONGJMP and
-	  RUBY_JMP_BUF.
-
-Tue Apr  1 01:55:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::Config.default_config_hash): requires
-	  win32/resolv to use Win32::Resolv.  [ruby-dev:34138]
-
-Tue Apr  1 01:40:58 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: adopted the ruby's style.
-
-	* rational.c: ditto.
-
-Tue Apr  1 00:17:35 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: revert.
-
-Mon Mar 31 18:57:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (config.h): define ssize_t.
-
-	* io.c (copy_stream_body): some platform don't have O_NOCTTY.
-
-Mon Mar 31 18:42:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: check for ssize_t.  [ruby-dev:34184]
-
-Mon Mar 31 14:45:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (num_quo): should convert its operand to Rational.
-
-	* rational.c (string_to_r_strict): should raise TypeError.
-
-	* bignum.c (Init_Bignum): should not redefine Bignum#div.
-	  Numeric#div will do.  [ruby-dev:34066]
-
-Mon Mar 31 04:05:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (io_getc): set coderange while getting characters.
-
-Sun Mar 30 23:16:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (proc_dup): should copy is_lambda attribute as well.
-	  [ruby-talk:296244]
-
-Sun Mar 30 15:33:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c: IO.copy_stream implemented.  [ruby-dev:33843]
-
-	* thread.c (rb_fd_select): new function.
-
-	* configure.in (sys/sendfile.h): check the header file.
-	  (sendfile): check the function.
-	  (pread): check the function.
-
-Sat Mar 29 14:18:41 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/*: full update Ruby/Tk to support Ruby(1.9|1.8) and Tc/Tk8.5.
-
-	* ext/tk/lib/tkextlib/tile.rb: [incompatible] remove TileWidgets'
-	  instate/state/identify method to avoid the conflict with standard
-	  widget options. Those methods are renamed to ttk_instate/ttk_state/
-	  ttk_identify (tile_instate/tile_state/tile_identify are available
-	  too). Although I don't recommend, if you really need old methods,
-	  please define "Tk::USE_OBSOLETE_TILE_STATE_METHOD = true" before
-	  "require 'tkextlib/tile'".
-
-	* ext/tk/lib/tkextlib/tile.rb: "Tk::Tile::__Import_Tile_Widgets__!"
-	  is obsolete. It outputs warning. To control default widget set,
-	  use "Tk.default_widget_set = :Ttk".
-
-	* ext/tk/lib/tk.rb: __IGNORE_UNKNOWN_CONFIGURE_OPTION__ method and
-	  __set_IGNORE_UNKNOWN_CONFIGURE_OPTION__!(mode) method are defined
-	  as module methods of TkConfigMethod. It may help users to wrap old
-	  Ruby/Tk scripts (use standard widgets) to force to use Ttk widgets.
-	  Ttk widgets don't have some options of standard widgets which are
-	  control the view of widgets. When set ignore-mode true, configure
-	  method tries to ignore such unknown options with no exception.
-	  Of course, it may raise other troubles on the GUI design.
-	  So, those are a little danger methods.
-
-	* ext/tk/lib/tk/itemconfig.rb: __IGNORE_UNKNOWN_CONFIGURE_OPTION__
-	  method and __set_IGNORE_UNKNOWN_CONFIGURE_OPTION__!(mode) method
-	  are defined as module methods of TkItemConfigMethod as the same
-	  purpose as TkConfigMethod's ones.
-
-	* ext/tk/sample/ttk_wrapper.rb: A new example. This is a tool for
-	  wrapping old Ruby/Tk scripts (which use standard widgets) to use
-	  Ttk (Tile) widgets as default.
-
-	* ext/tk/sample/tkextlib/tile/demo.rb: use ttk_instate/ttk_state
-	  method instead of instate/state method.
-
-	* ext/tk/lib/tk/root, ext/tk/lib/tk/namespace.rb,
-	  ext/tk/lib/tk/text.rb, ext/tk/lib/tkextlib/*: some 'instance_eval's
-	  are replaced to "instance_exec(self)".
-
-	* ext/tk/lib/tk/event.rb: bug fix on KEY_TBL and PROC_TBL (?x is not
-	  a character code on Ruby1.9).
-
-	* ext/tk/lib/tk/variable.rb: support new style of operation argument
-	  on Tcl/Tk's 'trace' command for variables.
-
-	* ext/tk/sample/demos-jp/widget, ext/tk/sample/demos-en/widget: bug fix
-
-	* ext/tk/sample/demos-jp/textpeer.rb,
-	  ext/tk/sample/demos-en/textpeer.rb: new widget demo.
-
-	* ext/tk/tcltklib.c: decrease SEGV troubles (probably)
-
-	* ext/tk/lib/tk.rb: remove Thread.critical access if Ruby1.9
-
-	* ext/tk/lib/tk/multi-tk.rb: support Ruby1.9 (probably)
-
-	* ext/tk/lib/tkextlib/tile.rb: add method to define Tcl/Tk command
-	  to make Tcl/Tk theme sources (based on different version of Tile
-	  extension) available.
-	  (Tk::Tile::__define_LoadImages_proc_for_compatibility__)
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/wm.rb: support dockable frames
-	  (Tcl/Tk8.5 feature). 'wm' command can treat many kinds of widgets
-	  as toplevel widgets.
-
-	* ext/tk/lib/tkextlib/tile/style.rb: ditto.
-	  (Tk::Tile::Style.__define_wrapper_proc_for_compatibility__)
-
-	* ext/tk/lib/tk/font.rb: add actual_hash and metrics_hash to get
-	  properties as a hash. metrics_hash method returns a boolean value
-	  for 'fixed' option. But metrics method returns numeric value
-	  (0 or 1) for 'fixed' option, because of backward compatibility.
-
-	* ext/tk/lib/tk/timer.rb: sometimes fail to set callback procedure.
-
-	* ext/tk/lib/tk.rb: add Tk.sleep and Tk.wakeup method. Tk.sleep
-	  doesn't block the eventloop. It will be better to use the method
-	  in event callbacks.
-
-	* ext/tk/sample/tksleep_sample.rb: sample script about Tk.sleep.
-
-Thu Mar 27 20:44:22 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c (f_lcm): removed.
-
-	* rational.c (rb_lcm, rb_gcdlcm): added.
-
-	* lib/complex.rb (gcd, lcm, gcdlcm): removed.
-
-	* lib/rational.rb (gcd, lcm, gcdlcm): ditto.
-
-Wed Mar 26 18:11:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_mod_constants): rdoc updated.  a patch from
-	  Florian Gilcher <flo AT andersground.net> in [ruby-core:16009].
-
-Wed Mar 26 00:55:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rand.rb: add tests to achieve over 95% test coverage
-	  of random.c.
-
-Wed Mar 26 00:28:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_rational.rb: add tests to achieve over 90% test
-	  coverage of rational.c.
-
-	* test/ruby/test_complex.rb: ditto for complex.c.
-
-Tue Mar 25 19:34:05 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bootstraptest/test_knownbug.rb: add tests.  [ruby-dev:34128]
-
-Tue Mar 25 19:09:04 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (ary_new): fix size check.  [ruby-dev:34123]
-
-	* array.c (rb_ary_take, rb_ary_drop): check negative size and use
-	  NUM2LONG instead of FIX2LONG.  [ruby-dev:34123]
-
-	* enum.c (enum_take, enum_drop): check negative size.
-
-	* test/ruby/test_array.rb: add tests for above.
-
-Tue Mar 25 16:32:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): checks if the word is empty.
-
-	* ruby.c (process_options): typo fixed.  [ruby-dev:34122]
-
-Tue Mar 25 15:26:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (defined_expr): false short-circuit destination label may
-	  be needed.  [ruby-talk:295296]
-
-	* compile.c (iseq_compile_each): put nil if false short-circuit is
-	  created.
-
-	* compile.c (compile_massign_opt): no need to use alloca.
-
-Mon Mar 24 19:23:52 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* parse.y (debug_lines): Always prepare a new array for each
-	  file's SCRIPT_LINES__ storage, instead of appending source lines
-	  every time a file is re-loaded; submitted by Rocky Bernstein in
-	  #18517.
-
-Mon Mar 24 10:25:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: sitearch should use target_cpu.  [ruby-core:15986]
-
-Sun Mar 23 02:51:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rlimit_resource_value): use NUM2RLIM.
-
-Sun Mar 23 02:28:01 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: fixed. [ruby-dev:34109]
-
-	* rational.c: ditto.
-
-Fri Mar 21 21:32:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_f_gets, rb_f_readline, rb_f_readlines): delegates to ARGF
-	  as well as puts and putc.  [ruby-dev:34100]
-
-Fri Mar 21 21:26:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::Hosts): should not use win32/resolv on cygwin.
-	  [ruby-dev:29945], [ruby-dev:34095]
-
-	* lib/win32/registry.rb (Win32::Registry.expand_environ): try upcased
-	  name too for cygwin.  [ruby-dev:29945]
-
-	* lib/win32/resolv.rb (Win32::Resolv.get_hosts_path): use expand_path.
-
-Fri Mar 21 21:10:00 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb: Say that I am the current maintainer.
-
-	* lib/set.rb: Ditto.
-
-	* lib/shellwords.rb: Ditto.
-
-	* ext/syslog/syslog.txt: Ditto.
-
-Fri Mar 21 09:24:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (open_for_install): write block result and rewrite only
-	  if changed from existing file.
-
-Fri Mar 21 08:29:33 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c (nurat_to_f): rearrangement.
-
-Fri Mar 21 06:44:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* rational.c (nurat_to_f): C99.
-
-Fri Mar 21 01:40:27 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* complex.c (nucomp_sub, nucomp_expt): call corresponding functions.
-
-Fri Mar 21 01:21:43 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* missing/tgamma.c: include config.h before math.h.  [ruby-dev:34075]
-
-Thu Mar 20 21:46:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_getline): use receiver.
-
-Thu Mar 20 21:20:19 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: some improvements (include Shin-ichiro HARA's
-	  effort).
-
-	* complex.c: some improvements.
-
-	* test/ruby/test_rational2.rb: new.
-
-Thu Mar 20 00:21:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_initialize_copy): get rid of segfault.
-
-	* io.c (argf_tell, argf_seek_m, argf_set_pos, argf_rewind,
-	  argf_fileno, argf_to_io, argf_eofl, argf_getc, argf_getbyte,
-	  argf_readchar, argf_readbyte, argf_each_line): use receiver.
-
-Wed Mar 19 23:52:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_putc, rb_io_puts): output directly if the receiver is
-	  rb_stdout to get rid of infinite recursion.  [ruby-dev:34059]
-
-Wed Mar 19 22:27:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* rational.c: added rb_gcd.
-
-	* complex.c: use rb_gcd.
-
-Wed Mar 19 18:37:00 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* complex.c: revert.
-
-	* rational.c: revert.
-
-Wed Mar 19 17:31:20 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_intern.h (TH_EXEC_TAG): need not to FLUSH_REGISTER_WINDOWS.
-	  [ruby-core:15871], [ruby-dev:34088]
-
-Wed Mar 19 14:53:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* complex.c (nucomp_to_s, nucomp_inspect): get rid of making
-	  unnecessary intermediate objects.
-
-	* complex.c (make_patterns, string_to_c): do not treat successive
-	  underscores as a part of numeric like as literals.  [ruby-dev:34085]
-
-	* rational.c (make_patterns, string_to_r): ditto.
-
-Wed Mar 19 14:36:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_cstr_to_inum): treat successive underscores as
-	  nondigit.  [ruby-dev:34089]
-
-Wed Mar 19 14:08:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_check_encoding): should not load autoloaded encoding
-	  directly, instead use rb_enc_find_index() which deal with alias and
-	  replica.  [ruby-core:15957]
-
-Wed Mar 19 11:49:47 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regint.h (include): include ruby.h instead of defines.h and config.h.
-
-Wed Mar 19 10:17:12 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* regint.h (CHECK_INTERRUPT_IN_MATCH_AT): add interrupt check
-	  during match.  [ruby-talk:295002]
-
-Tue Mar 18 16:24:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (literal_concat_gen): bail out at different encoding.
-
-Tue Mar 18 04:00:27 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_memsearch_ss): simple shift search.
-
-	* re.c (rb_memsearch_qs): quick search.
-
-	* re.c (rb_memsearch_qs_utf8): quick search for UTF-8 string.
-
-	* re.c (rb_memsearch_qs_utf8_hash): hash functions for above.
-
-	* re.c (rb_memsearch): use above functions.
-
-	* string.c (rb_str_index): give enc to rb_memsearch.
-
-	* include/ruby/intern.h (rb_memsearch): move to encoding.h.
-
-	* include/ruby/encoding.h (rb_memsearch): move from intern.h.
-
-	* common.mk (PREP): add dependency.
-
-Mon Mar 17 22:23:54 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* array.c (rb_ary_take, rb_ary_take_while, rb_ary_drop,
-	  rb_ary_drop_while): new methods. [ruby-dev:34067]
-
-	* test/ruby/test_array.rb: add tests for above.
-
-Mon Mar 17 17:11:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode): should use `run-mode-hooks' instead
-	  of calling `run-hooks' directly to run the mode hook.  patch from
-	  Chiyuan Zhang <pluskid AT gmail.com> in [ruby-core:15915]
-
-Mon Mar 17 16:41:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: unset GREP_OPTIONS.  [ruby-core:15918]
-
-Sun Mar 16 18:07:07 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/utf_16_32.c: bug fix (some invalid UTF-8 sequences
-	  were legal)
-
-	* test/ruby/test_transcode.rb: test for above bug
-
-Sun Mar 16 17:28:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (LIBRUBY_SO): add dependency to $(BUILTIN_ENCOBJS).
-
-Sun Mar 16 08:51:41 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* include/ruby/intern.h: added some declarations.
-
-	* include/ruby/ruby.h: ditto.
-
-	* common.mk: added some entries.
-
-	* configure.in: added a check for signbit.
-
-	* lib/complex.rb: nearly all of core definitions have been removed.
-
-	* lib/rational.rb: ditto.
-
-	* lib/mathn.rb: some trivial adjustments.
-
-	* complex.c: new.
-
-	* rational.c: ditto.
-
-	* numeric.c (flo_{quo,rdiv}, fix_fdiv): added.
-
-	* numeric.c ({num,int}_{numerator,denominator}): ditto.
-
-	* bignum.c (rb_big_fdiv): ditto.
-
-	* numeric.c (fix_{quo,pow}): now may yield rational number.
-
-	* bignum.c (rb_big_{quo,pow}): ditto.
-
-	* numeric.c (rb_{int,flo}_induced_from): now can accept rational.
-
-	* gc.c (gc_mark_children, obj_free): now detects complex and rational.
-
-	* inits.c (rb_call_inits): now calls Init_{Complex,Rational}.
-
-	* test/ruby/test_complex.rb: new.
-
-	* test/ruby/test_rational.rb: ditto.
-
-Sat Mar 15 17:48:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_associate_index): pass unnecessary enc_capable().
-
-	* string.c (rb_str_cmp): reduce invocation of rb_enc_compatible().
-
-Fri Mar 14 17:04:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (inttypes.h): includes always if available.
-
-	* string.c, ext/digest/defs.h: moved inttypes.h to ruby.h.
-
-Fri Mar 14 16:59:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_LIB_PREFIX): fix for prefix.
-
-Fri Mar 14 16:35:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::Cookie::initialize): performance patch from
-	  Makoto Kuwata <kwa@kuwata-lab.com> in [ruby-dev:34048].
-
-Fri Mar 14 15:49:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_LIB_PREFIX): use libdir.
-
-Fri Mar 14 14:24:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/defs.h: inttypes.h is still needed.
-
-Fri Mar 14 11:34:12 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub: follow below changes.
-
-Fri Mar 14 11:24:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-encoding-map, ruby-use-encoding-map): added
-	  to customize.
-
-Fri Mar 14 10:37:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in (int8_t, uint8_t,  int16_t,  uint16_t int32_t,
-	  uint32_t int64_t, uint64_t, int128_t, uint128_t,
-	  intptr_t, uintptr_t): check if defined.
-
-	* win32/Makefile.sub: follow configure.in.
-
-	* ext/digest/defs.h: remove checks for uint8_t, uint32_t and uint64_t.
-
-Fri Mar 14 10:12:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_VARTYPE): should not indent preprocessor
-	  directives.
-
-Fri Mar 14 10:03:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (UNALIGNED_WORD_ACCESS): IA64 cannot access unaligned word.
-
-Thu Mar 13 21:00:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_slice_bang): should not use rb_ary_subseq()
-	  which shares internal pointer.  splice modifies the receiver
-	  right after subseq.  [ruby-dev:34005]
-
-	* bootstraptest/test_struct.rb: some test moved from test to shut
-	  warning up.
-
-Thu Mar 13 19:42:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (config.h): define uint32_t.
-
-Thu Mar 13 14:14:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* trunk/configure.in (AC_CHECK_HEADERS): stdint.h is not needed to
-	  check.
-
-	* trunk/configure.in (rb_cv_type_uint32_t): unquoted.  [ruby-dev:34030]
-
-	* trunk/string.c (hash): use inttypes.h instead of stdint.h.
-
-Thu Mar 13 10:42:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_divmod): should return integer division.  [ruby-dev:34006]
-
-	* enum.c (zip_ary): wrong boundary condition.
-
-	* test/ruby/test_numeric.rb (TestNumeric::test_num2long): bit-and
-	  should not raise RangeError.
-
-Thu Mar 13 03:12:48 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb/cmd/help.rb: should be updated for new ri structure.
-	  [ruby-core:15825]
-
-	* lib/rdoc/ri/driver.rb (RDoc::initialize): allow options to be optional.
-
-	* lib/rdoc/ri/driver.rb (RDoc::class_cache): map_dirs may be
-	  empty.
-
-	* lib/rdoc/ri/driver.rb (RDoc::get_info_for): revive get_info_for
-	  method.  maybe broken.
-
-	* lib/rdoc/ri/util.rb (RDoc::initialize): should not use RiError
-	  no more.
-
-Thu Mar 13 01:45:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (stdint.h): check if presence.
-
-	* configure.in (uint32_t): check if defined.
-
-	* string.c (hash): fix for portability.  [ruby-dev:34020]
-
-Wed Mar 12 17:33:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): fix for a mere underscore.
-
-Wed Mar 12 14:47:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h (rb_thread_raised_set): use generic flags.
-
-	* eval.c (rb_longjmp): clear all raised flags.
-
-	* eval.c (stack_check): leave clearing flag to rb_longjmp.
-
-	* gc.c (rb_memerror): use thread raised flag instead of static flag.
-
-Tue Mar 11 23:38:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_combination): argument check before creating
-	  Enumerator.
-
-	* array.c (rb_ary_permutation): ditto.
-
-	* enum.c (enum_zip): optimize if all arguments are arrays.
-
-Tue Mar 11 19:48:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (fix_coerce): try conversion before type check.
-	  [ruby-core:15838]
-
-Tue Mar 11 12:39:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (clean-local): WINMAINOBJ is Windows specific.
-
-Tue Mar 11 10:19:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (hash): replaced by MurmurHash described in
-	  <http://murmurhash.googlepages.com/>.
-
-Tue Mar 11 09:52:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): empty strings in any encoding are
-	  compatible each other.
-
-Tue Mar 11 00:46:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (usage): remove some unimportant lines to fit -h message
-	  in a page.  [ruby-dev:34018]
-
-Mon Mar 10 17:11:00 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_local_variables): local_variables should return an
-	  array of symbols.  [ruby-dev:34008]
-
-	* vm.c (collect_local_variables_in_env): ditto.
-
-Mon Mar 10 15:53:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* version.c (MKSTR): make US-ASCII.  [ruby-dev:34010]
-
-Mon Mar 10 02:08:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_index): if t == s + pos, the character beginning
-	  from s + pos is valid.
-
-Sun Mar  9 13:51:21 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/generator.rb: Restore missing line to #params.  Patch by
-	  Lincoln Stoll <lstoll at lstoll.net>
-
-Sun Mar  9 09:52:00 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/code_objects.rb: Remove debugging Kernel#p.  Patch by
-	  Lincoln Stoll <lstoll at lstoll.net>
-	* lib/rdoc/generator/html.rb: Fully qualify AllReferences.  Patch by
-	  Lincoln Stoll <lstoll at lstoll.net>
-	* lib/rdoc/ri/writer.rb: Fix 1.8 backwards compatibility.
-
-Sat Mar  8 18:50:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (isdirsep): backslash is valid path separator on cygwin too.
-
-Sat Mar  8 06:53:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (search_nonascii): Use VALUE instead of unsigned long
-	  because VALUE can be the fastest unsigned integer type.
-	  On LLP64 unsigned long isn't the fastest.
-	* string.c (str_strlen): ditto.
-	* string.c (str_utf8_nth): ditto.
-	* string.c (count_utf8_lead_bytes_with_ulong): ditto.
-
-	* string.c (count_utf8_lead_bytes_with_word): renamed.
-
-Fri Mar  7 21:27:43 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c: fix indent.
-
-Fri Mar  7 21:12:19 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (power_cache_init, power_cache_get_power0, Init_Bignum):
-	  delayed initializing power cache per base.  [ruby-dev:34003]
-
-Fri Mar  7 20:30:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cont.c (cont_restore_0): fixed typo.  [ruby-core:15821]
-
-Fri Mar  7 19:56:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: rdoc added.  [ruby-Patches-9762]
-
-Thu Mar  6 17:26:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): space flag is in effect for Inf/NaN too.
-	  [ruby-dev:34002]
-
-Thu Mar  6 15:44:20 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): casting double to long is undefined
-	  if the integer part of double is out of the range of long.
-
-Thu Mar  6 15:11:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): ignore 0 flag for NaN and Inf.
-	  [ruby-dev:33994]
-
-Thu Mar  6 15:05:25 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32}/Makefile.sub (RUNRUBY): use $(PROGRAM) instead of
-	  ruby$(EXEEXT).
-	  suggested by KIMURA Koichi <kimura.koichi at canon.co.jp>.
-	  [ruby-dev:34000]
-
-Thu Mar  6 14:46:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/lgamma_r.c (loggamma): return 0 for 1 and 2.
-
-	* test/ruby/test_math.rb: accept errors by functions under missing/.
-
-Thu Mar  6 14:29:44 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* transcode.c (rb_str_transcode_bang): set coderange.
-
-	* transcode.c (rb_str_transcode): use rb_str_transcode_bang.
-
-Thu Mar  6 14:00:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/missing.h (cbrt): add declaration.
-
-Thu Mar  6 11:14:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-add-log-current-method): use ruby style
-	  method name format.
-
-Thu Mar  6 11:12:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): no need of loop.
-
-Thu Mar  6 08:30:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_mod_freeze): call rb_class_name() directly.
-	  [ruby-core:15802]
-
-Thu Mar  6 04:32:06 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (count_utf8_lead_bytes_with_ulong): fix shift size.
-	  [ruby-dev:33993]
-
-	* string.c (str_utf8_nth) fix wrong counting.
-
-Thu Mar  6 00:34:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): size_t returned from strlen() can be
-	  unsigned.
-
-Thu Mar  6 00:31:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* struct.c (make_struct): preserve encoding of struct name.
-
-Wed Mar  5 22:49:20 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (is_utf8_lead_byte, count_utf8_lead_bytes_with_ulong):
-	  defined for UTF-8 optimization.
-
-	* string.c (str_strlen): use is_utf8_lead_byte and
-	  count_utf8_lead_bytes_with_ulong.
-
-	* string.c (str_utf8_nth) ditto.
-
-Wed Mar  5 17:53:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_flock): returns false on EAGAIN if non-blocking.
-	  [ruby-core:15795]
-
-Wed Mar  5 17:43:43 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c (transcode_loop): Adjusted detection of invalid
-	  (ill-formed) UTF-8 sequences. Fixing potential security issue, see
-	  http://www.unicode.org/versions/Unicode5.1.0/#Notable_Changes.
-
-	* test/ruby/test_transcode.rb: Added two tests for above fix.
-
-Wed Mar  5 14:00:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (fix_to_s): avoid rb_scan_args() when no argument
-	  given.
-	* bignum.c (rb_big_to_s): ditto.
-	* enum.c (enum_first): ditto.
-	* eval_jump.c (rb_f_catch): ditto.
-	* io.c (rb_obj_display): ditto.
-	* class.c (rb_obj_singleton_methods): ditto.
-	* object.c (rb_class_initialize): ditto.
-	* random.c (rb_f_srand): ditto.
-	* range.c (range_step): ditto.
-	* re.c (rb_reg_s_last_match): ditto.
-	* string.c (rb_str_to_i): ditto.
-	* string.c (rb_str_each_line): ditto.
-	* string.c (rb_str_chomp_bang): ditto.
-	* string.c (rb_str_sum): ditto.
-
-	* string.c (str_modifiable): declare inline.
-	* string.c (str_independent): ditto.
-
-Wed Mar  5 11:50:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/debug.rb: require 'continuation' to implement "restart"
-	  command.  [ruby-dev:33992]
-
-	* lib/debug.rb (Context::debug_command): remove local variable
-	  shadowing to shut up warnings.  [ruby-dev:33992]
-
-	* lib/debug.rb (Context::display_list): ditto.
-
-	* lib/debug.rb (Context::resume): ditto.
-
-	* lib/debug.rb (Context::get_thread): no longer use #index for Hash.
-
-Tue Mar  4 21:35:59 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/irb.rb (IRB::Irb::eval_input): SyntaxError should not be
-	  considered as IRB bug.  [ruby-dev:33991]
-
-	* lib/irb/workspace.rb (IRB::WorkSpace::filter_backtrace): should
-	  filter 'irb.rb' as well for context mode 2 and 3.
-
-Tue Mar  4 19:10:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_aset): should not copy key string when
-	  compare_by_identity is set.  [ruby-dev:33604]
-
-	* hash.c (hash_equal): two hash tables are different when internal
-	  comparison table differ.  [ruby-dev:33989]
-
-Tue Mar  4 16:29:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): disallow non digits '0o' expression.
-
-Tue Mar  4 14:35:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (open_key_args): use rb_io_open_with_args instead of rb_f_open.
-	  [ruby-core:15763]
-
-Tue Mar  4 13:41:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (add_heap): fix previous change.  [ruby-dev:33988]
-
-Tue Mar  4 10:21:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (add_heap): use binary search to find the place to insert the
-	  new heap slot.  [ruby-dev:33983]
-
-Tue Mar  4 05:30:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (open_key_args): use rb_io_open instead of rb_f_open.
-	  [ruby-core:15746]
-
-Mon Mar  3 23:28:37 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/filehandler.rb: should normalize path
-	  separators in path_info to prevent directory traversal
-	  attacks on DOSISH platforms.
-	  reported by Digital Security Research Group [DSECRG-08-026].
-
-	* lib/webrick/httpservlet/filehandler.rb: pathnames which have
-	  not to be published should be checked case-insensitively.
-
-Mon Mar  3 17:25:45 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* gc.c (add_heap): sort heaps array in ascending order to use
-	  binary search.
-
-	* gc.c (is_pointer_to_heap): use binary search to identify object
-	  in heaps.  works better when number of heap segments grow big.
-
-Mon Mar  3 17:15:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): remove too strict encoding check.
-	  [ruby-dev:33966]
-
-Mon Mar  3 16:14:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_any_hash): shrinks all results in Fixnum range.
-	  [ruby-core:15713]
-
-Sun Mar  2 23:03:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_ungetc): reduce redundant call.
-
-Sun Mar  2 10:13:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file): parse shebang in us-ascii.  a patch from
-	  sheepman <sheepman AT sheepman.sakura.ne.jp> in [ruby-dev:33955]
-
-Sun Mar  2 00:08:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_cstr_to_dbl): check for successive underscores.
-	  [ruby-dev:33952]
-
-Sat Mar  1 17:59:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (struct argf): packed ARGF stuffs.
-
-	* ruby.c (proc_options): use ruby_set_inplace_mode().
-
-Sat Mar  1 17:51:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/test/unit/collector/dir.rb (recursive_collect): do not always
-	  include all test_*.rb.
-
-Sat Mar  1 14:14:17 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* development snapshot 1.9.0-1 released.
-
-Sat Mar  1 13:46:26 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* tool/make-snapshot: make prereq uses MINIRUBY.
-
-	* tool/make-snapshot: allow packaging like 1.9.0-1 by second
-	  command-line argument.
-
-Sat Mar  1 13:11:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/allpairs.rb: new file for all pairs method.
-
-	* test/ruby/test_m17n_comb.rb: use allpairs.rb to reduce test cases.
-
-	* test/ruby/test_sprintf_comb.rb: ditto.
-
-Sat Mar  1 12:34:21 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (sym_inspect): use rb_str_inspect() instead of
-	  rb_str_dump().  [ruby-dev:33946]
-
-Sat Mar  1 12:15:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_method.c (rb_get_method_body): ent->method may be freed by
-	  GC.  [ruby-dev:31819]
-
-	* thread.c (remove_event_hook): should not access freed memory.
-	  [ruby-dev:31820]
-
-Sat Mar  1 10:31:19 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (read_all, rb_io_getline_fast): encoding is io_input_encoding.
-
-Sat Mar  1 10:09:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_setup_table, rb_str_split_m, rb_str_chomp_bang):
-	  simplified with rb_enc_ascget().  [ruby-dev:33944]
-
-Sat Mar  1 10:01:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_coderange_scan_restartable): should not return
-	  offset in the middle of a character.
-
-	* string.c (rb_str_coderange_scan_restartable): should not return
-	  invalid cr value.
-
-Sat Mar  1 09:36:08 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): "%#.0o" should keep prefix where
-	  "%#.0x" should not.
-
-Sat Mar  1 02:35:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (big2str_find_n1): check integer overflow.
-
-Sat Mar  1 00:29:07 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_dummy_p): bootstrap encodings can not be dummy.
-
-	* encoding.c (rb_enc_ascget): no needs to call rb_enc_precise_mbclen()
-	  twice.
-
-Fri Feb 29 23:14:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb::test_str_chomp): test
-	  updated.
-
-Fri Feb 29 20:58:09 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_iterator.rb (TestIterator::test_enumerator):
-	  adjust test for zip behavior reversion.
-
-Fri Feb 29 20:25:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_chomp_bang): now works on UTF-16.
-
-	* string.c (tr_setup_table): negation should work on non ASCII
-	  compatible strings as well.
-
-	* string.c (rb_str_split_m): awk split should work on non ASCII
-	  compatible strings as well.
-
-Fri Feb 29 18:08:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* time.c (time_strftime): format should be ascii compatible.
-
-	* parse.y (rb_intern3): non ASCII compatible symbols.
-
-	* re.c (rb_reg_regsub): add encoding check.
-
-	* string.c (rb_str_chomp_bang): ditto.
-
-	* test/ruby/test_utf16.rb (TestUTF16::test_chomp): raises exception.
-
-Fri Feb 29 15:16:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_rpartition): calculation was done in byte indexing.
-
-	* test/ruby/test_m17n_comb.rb (TestM17NComb::test_str_start_with):
-	  allow start_with? matching on broken strings.
-
-Fri Feb 29 15:12:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (opt_block_param): command can start just after block param
-	  definition.  [ruby-list:44479]
-
-Fri Feb 29 03:22:19 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/test_time.rb (test_readers): fix typo.
-	  (test_strftime): "UTC" is also ok for time.gmtime.strftime("%Z").
-
-Fri Feb 29 02:50:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (str_new): remove encoding assumption of empty string.
-
-	* hash.c ( rb_f_getenv, env_fetch, env_inspect): result of ENV should
-	  be always ASCII-8BIT.
-
-	* object.c (nil_to_s): nil.to_s should be US-ASCII.
-
-Fri Feb 29 02:24:22 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb: forgot to update RELEASE_DATE
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/text.rb,
-	  ext/tk/lib/tkextlib/iwidgets/scrolledtext.rb: remove adhoc check
-	  of Ruby's features (use existence of some classes instead of
-	  comparing with RUBY_VERSION)
-
-	* ext/tk/lib/tk/root.rb, ext/tk/lib/tk/autoload.rb: make TkRoot
-	  (Tk::Root) unswitchable
-
-	* ext/tk/lib/multi-tk.rb: partial bug fix (still not work!!)
-
-Thu Feb 28 23:37:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI::Meta#meta_setup_encoding): use ASCII-8BIT
-	  for charset unspecified non-text data.
-
-Thu Feb 28 22:19:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_capable): IMMEDIATE_P doesn't include Qnil and Qfalse.
-	  use SPECIAL_CONST_P.
-
-Thu Feb 28 19:45:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (enc_find): check type of argument and convert to String
-	  if it is StringValue. [ruby-cvs:22866]
-
-Thu Feb 28 18:07:52 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI::Meta#meta_setup_encoding): setup encoding
-	  by charset.
-	  (OpenURI::Meta#meta_add_field): call meta_setup_encoding when
-	  content-type.
-
-Thu Feb 28 15:29:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* io.c (rb_io_getline_fast): scan coderange.
-
-Thu Feb 28 14:36:46 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_str_copy): removed.
-
-Thu Feb 28 13:51:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (stack_check): made flag per threads.
-
-	* thread.c (rb_thread_set_raised, rb_thread_reset_raised): prefixed.
-
-Thu Feb 28 11:43:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_flock): immediately returns on EAGAIN if
-	  non-blocking.  [ruby-core:15672]
-
-Thu Feb 28 11:23:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getline_1): get rid of segfault.  [ruby-dev:33938]
-
-Thu Feb 28 11:19:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_reverse_bang): removed unused variables.
-
-	* include/ruby/encoding.h (rb_str_coderange_scan_restartable): added
-	  prototype.
-
-	* string.c (rb_str_coderange_scan_restartable, rb_str_times): removed
-	  unused variables.
-
-	* string.c (rb_str_reverse_bang): ditto
-
-	* string.c (rb_enc_str_copy): unused now.  may be used in future?
-
-Thu Feb 28 03:03:32 2008  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/*: make default widget set
-	  switchable between Tk (standard Tcl/Tk widget set) and
-	  Ttk (Tile). Initial default widget set is Tk. Now, toplevel
-	  widget classes are removed and defined as aliases.
-	  For example, "TkButton" is an alias of the "Tk::Button" class.
-	  Those aliases are replaced when switching default widget set.
-	  "Tk.default_widget_set=" is the method for switching default
-	  widget set. "Tk.default_widget_set = :Ttk" defines Ttk (Tile)
-	  widget set as default. It means that "TkButton" denotes
-	  "Tk::Tile::Button" class. And then, "TkButton.new" creates
-	  a Tk::Tile::Button widget. Of course, you can back to use
-	  standard Tk widgets as the default widget set by calling
-	  "Tk.default_widget_set = :Tk", whenever you want. Based on
-	  the feature, you can use Ttk widget styling engine on your
-	  old Ruby/Tk application without modifying its source, if you
-	  don't use widget options unsupported on Ttk widgets (At first,
-	  call "Tk.default_widget_set = :Ttk", and next load and run
-	  your application).
-	  This is one step for supporting Tcl/Tk8.5 features.
-
-Wed Feb 27 22:55:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_coderange_scan_restartable): coderange scanning
-	  for partial read.
-
-	* io.c (read_all): set coderange when not convert encoding.
-
-Wed Feb 27 03:55:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb, enc/make_encmake.rb: load current mkmf.rb even if
-	  cross-compiling.
-
-	* ext/extmk.rb, enc/make_encmake.rb, lib/mkmf.rb: need to be 1.8
-	  compatible for cross-compiling.
-
-Tue Feb 26 16:53:13 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-calculate-indent): should distinguish
-	  comment and # in strings.  [ruby-dev:33874]
-
-Tue Feb 26 16:41:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (combi_len, rb_ary_product): check for overflow.
-	  [ruby-Bugs-18355]
-
-Tue Feb 26 16:38:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (recursive_cmp): compare minimal length parts.
-
-Tue Feb 26 16:06:00 2008  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_{ec,dh,dsa,rsa}.c: Remove useless warnings.
-
-	* ext/openssl/ossl_asn1.c: Simplify code.
-
-	* ext/openssl/ossl_ssl_session.c Fix compiler warnings.
-	  Undefine #id if SSL_SESSION_get_id is not supported.
-
-Tue Feb 26 15:50:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (value_expr_gen): removed inappropriate warning.
-	  [ruby-core:15660]
-
-Tue Feb 26 15:43:42 2008  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (tokadd_escape): refactored.  [ruby-core:15657]
-
-Tue Feb 26 15:30:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_eql, rb_ary_cmp): get rid of stack overflow with
-	  self-recursive constructs.  [ruby-Bugs-18356]
-
-Tue Feb 26 01:16:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (ROBJECT_NUMIV): renamed from ROBJECT_LEN.
-	  (ROBJECT_IVPTR): renamed from ROBJECT_PTR.
-
-	* variable.c: follow the above renaming.
-
-	* object.c: ditto.
-
-	* gc.c: ditto.
-
-	* marshal.c: ditto.
-
-Mon Feb 25 17:30:29 2008  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* ext/openssl/digest.c ext/openssl/lib/openssl/digest.rb:
-	  Commit patch #9280 from Akinori MUSHA.
-	  Simplify the OpenSSL::Digest class and make use of the
-	  existing Digest framework.
-	  Enhance performance.
-
-Mon Feb 25 15:33:29 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bignum.c (big2str_karatsuba): initialize cache if not initialized.
-
-	* bignum.c (Init_Bignum): delayed initializing cache.
-	  [ruby-dev:33930]
-
-Mon Feb 25 13:40:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (Init_process): share bignum objects for RLIM_INFINITY,
-	  RLIM_SAVED_MAX and RLIM_SAVED_CUR if they are equal.
-
-Mon Feb 25 10:41:41 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* encoding.c (Encoding#dummy): minor grammatical fixes
-	  in rdoc documentation.
-
-Mon Feb 25 00:01:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (clean-local): should be double-colon.
-
-Sun Feb 24 23:39:59 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, {bcc,win}32/Makefile.sub (clean-local): remove
-	  intermediate files.
-
-	* cygwin/GNUmakefile.in (clean-local): remove def file.
-
-Sun Feb 24 06:49:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* debug.c (ruby_set_debug_option): separated ruby_each_words().
-
-	* util.c (ruby_each_words): extracted from ruby_set_debug_option().
-
-	* ruby.c (enable_option, disable_option): allow all for all known
-	  features.
-
-	* ruby.c (proc_options): generalized enable/disable options.
-
-	* ruby.c (ruby_init_gems): take enabled flag.  [ruby-core:14840]
-
-	* ruby.c (process_options): added --disable-rubyopt flag.
-
-	* include/ruby/util.h (ruby_each_words): prototype.
-
-Sun Feb 24 05:25:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): check if argument for -E exists.
-
-Sun Feb 24 05:09:43 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-label-indent): fix for labels inside
-	  blocks in switch.
-
-Sun Feb 24 03:52:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (valid_filename): use O_EXCL to get rid of clobbering
-	  existing files in race conditions.
-
-Sat Feb 23 21:36:13 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c (ole_init_cp): should return value.
-
-Sat Feb 23 20:16:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (str_sublen): removed.
-
-	* string.c (rb_str_reverse, rb_str_reverse_bang): use
-	  single_byte_optimizable.
-
-Sat Feb 23 19:25:18 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_copy_for_substr): renamed from
-	  rb_enc_cr_str_copy.
-
-	* string.c: use rb_enc_cr_str_copy_for_substr and keep coderange.
-
-Sat Feb 23 18:50:17 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_encoding2cp): remove US-ASCII
-	  mapping.
-
-Sat Feb 23 01:09:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (rlimit_resource_type): new function.
-	  (rlimit_resource_value): new function.
-	  (proc_getrlimit): use rlimit_resource_type to accept
-	  symbol and string as resource type.
-	  (proc_setrlimit): use rlimit_resource_type and rlimit_resource_value
-	  to accept symbol and string as resource type and values.
-
-Fri Feb 22 21:12:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_copy): check string's coderange is 7bit or
-	  valid.
-
-Fri Feb 22 19:50:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (BIGZEROP): fix for longer Bignum zeros.  [ruby-Bugs-17454]
-
-Fri Feb 22 15:47:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_mbclen): return minlen instead of 1 when
-	  a character is not found properly.
-
-	* string.c (rb_enc_strlen): round up string length with fixed
-	  multibyte encoding such as UTF-32.
-	  (rb_enc_strlen_cr): ditto.
-	  (rb_str_substr): fix substring with fixed multibyte encoding.
-	  (rb_str_justify): check number of characters.
-
-Fri Feb 22 12:11:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_inspect): string of ascii incompatible encoding
-	  should be escaped and returned as US-ASCII encoding.
-
-Fri Feb 22 11:16:55 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_substr): copy encoding although empty string.
-
-Fri Feb 22 04:48:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_times): empty string's coderange is CODERANGE_7BIT.
-
-	* string.c (rb_str_substr): ditto.
-
-	* encoding.c (rb_enc_compatible): empty string is compatible with not
-	  only nonasciicompatible strings. [ruby-dev:33895]
-
-Thu Feb 21 17:15:15 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: Added basic support for passing options to String#encode
-	  via a hash. Currently only one option, with one value, is supported:
-	  invalid: :ignore (dropping invalid byte sequences instead of
-	  producing an error). Option naming is not yet stable!
-
-	* test/ruby/test_transcode.rb: Added a single test for invalid: :ignore
-	  option. Not more tests because most data does not yet distinguish
-	  between INVALID and UNKNOWN.
-
-Thu Feb 21 16:35:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_unshift_m): expands enough for argc.  [ruby-dev:33880]
-
-Thu Feb 21 14:49:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (argf_set_encoding): uses current_file after check if next
-	  input is available.
-
-Thu Feb 21 14:13:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_putc): invoke stdout method so that redefining putc
-	  may take effect.   [ruby-talk:291844]
-
-	* io.c (rb_f_puts): ditto.
-
-Thu Feb 21 11:10:49 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c: replace rb_enc_copy by rb_enc_cr_str_copy or
-	  rb_enc_cr_str_exact_copy.
-
-Thu Feb 21 10:35:04 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_asciicompat): dummy encoding is not
-	  ascii compatible. [ruby-dev:33878]
-
-Thu Feb 21 00:01:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RPATHFLAG): -R option of HP-UX ld is not for runtime
-	  load path.  [ruby-list:44600]
-
-Wed Feb 20 23:55:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_map_errno): exported.
-
-Wed Feb 20 23:28:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/readline/extconf.rb (rl_event_hook): workaround for native
-	  windows.
-
-Wed Feb 20 19:42:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_associate_index): doesn't clear coderange
-	  when new encoding equals to old one.
-
-Wed Feb 20 19:15:38 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_str_copy): added for wrapper for rb_enc_copy.
-	  this also copy coderange when ptr and len is equal.
-
-	* string.c (rb_enc_cr_str_copy): added for wrapper for rb_enc_copy.
-	  this always copy coderange.
-
-	* string.c (str_replace_shared): use rb_enc_str_copy.
-
-	* string.c (str_new3): don't rb_enc_copy because encoding is copied
-	  at str_replace_shared.
-
-Wed Feb 20 13:08:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* instruby.rb (parse_args): added --dir-mode, --script-mode and
-	  --cmd-type options.  [ruby-dev:33816]
-
-	* instruby.rb (parse_args): added bin-arch and bin-comm to install
-	  type, for compiled files and script files.
-
-	* instruby.rb (parse_args): deal with make style command line macros,
-	  and count as long style options if prefixed with INSTALL_.
-
-	* instruby.rb (makedirs): use $dir_mode.  [ruby-dev:33805]
-
-	* instruby.rb (open_for_install): set file mode, which is now
-	  permission mode instead of access mode.
-
-	* instruby.rb (bin-comm): installs scripts with replacing shebang
-	  lines.
-
-Wed Feb 20 10:04:22 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (open_key_args): set arg->io even if no options passed.
-	  [ruby-dev:33072]
-
-Tue Feb 19 21:11:49 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_strlen_cr): get length with coderange scan.
-
-	* string.c (str_strlen): use rb_enc_strlen_cr. [ruby-dev:33849]
-
-Tue Feb 19 20:49:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_raise_jump): moved adjustment for control frame.
-
-Tue Feb 19 18:34:32 2008  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (STACK_LENGTH) [SPARC] : 0x80 offset removed.  [ruby-dev:33857]
-
-Tue Feb 19 14:27:32 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_event): prevent polling.  based on
-	  a patch from error errorsson in [ruby-Bugs-17675].
-
-Tue Feb 19 11:14:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_exec_node): no thread starts inside iseq compilation.
-
-	* eval.c (rb_f_raise): skip current control frame.  [ruby-core:15589]
-
-	* insns.def (opt_div): raise as the ordinary method. [ruby-core:15589]
-
-Mon Feb 18 15:16:30 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_each_line): fix newline size.
-
-Mon Feb 18 13:06:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/irb/locale.rb (IRB::Locale#lc2kconv): check ja_JP.EUC-JP as well.
-
-Mon Feb 18 11:51:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (re_warn): defined to restore warnings for /[a-c-e]/, etc.
-
-Mon Feb 18 10:17:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/pty/lib/expect.rb (IO#expect): check if peer is closed.
-	  [ruby-Bugs-17940]
-
-Mon Feb 18 00:33:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_regsub): don't repeat repl twice with
-	  "X".sub!(/./, sprintf("\\%c", 255)).
-
-Sun Feb 17 23:06:55 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/cgi.rb (CGI::escapeHTML): use gsub with Hash. [ruby-dev:33828]
-
-Sun Feb 17 21:38:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (ENC_CODERANGE_AND): fix broken case. [ruby-dev:33826]
-
-	* string.c (rb_str_times): fix broken case. [ruby-dev:33826]
-
-Sun Feb 17 20:45:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): add enable_warning parameter.
-	  (rb_reg_adjust_startpos): disable warning by rb_reg_prepare_re.
-	  (rb_reg_search): follow rb_reg_prepare_re parameter change.
-
-Sun Feb 17 20:12:41 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_regexp.rb: add tests to achieve over 90% test
-	  coverage of re.c.
-
-Sun Feb 17 15:25:08 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (ENC_CODERANGE_AND): added.
-
-	* string.c (rb_str_plus, rb_str_times): keep coderange.
-
-	* parse.y (STR_NEW0) use rb_usascii_str_new.
-
-Sun Feb 17 14:07:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (str_strlen): rb_enc_strlen doesn't fail.
-
-Sun Feb 17 13:03:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (str_sublen): use rb_enc_strlen.
-
-Sun Feb 17 12:17:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/{euc_jp.c,gbk.c,iso_8859_1.c,iso_8859_11.c,iso_8859_13.c,
-	  iso_8859_2.c,iso_8859_6.c,iso_8859_7.c,iso_8859_8.c,iso_8859_9.c,
-	  shift_jis.c,windows_1251.c}: add document about encodings.
-
-	* enc/cp949.c: divided into new file.
-
-Sun Feb 17 10:59:04 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_quote): return US-ASCII string consistently.
-
-Sun Feb 17 09:17:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_times): reduce loop overhead.
-
-Sun Feb 17 03:37:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/re.h (struct rmatch_offset): new struct for character
-	  offsets.
-	  (struct rmatch): new struct.
-	  (struct RMatch): reference struct rmatch.
-	  (RMATCH_REGS): new macro.
-
-	* re.c (match_alloc): initialize struct rmatch.
-	  (pair_byte_cmp): new function.
-	  (update_char_offset): update character offsets.
-	  (match_init_copy): copy regexp and character offsets.
-	  (match_sublen): removed.
-	  (match_offset): use update_char_offset.
-	  (match_begin): ditto.
-	  (match_end): ditto.
-	  (rb_reg_search): make character offset updated flag false.
-	  (match_size): use RMATCH_REGS.
-	  (match_backref_number): ditto.
-	  (rb_reg_nth_defined): ditto.
-	  (rb_reg_nth_match): ditto.
-	  (rb_reg_match_pre): ditto.
-	  (rb_reg_match_post): ditto.
-	  (rb_reg_match_last): ditto.
-	  (match_array): ditto.
-	  (match_aref): ditto.
-	  (match_values_at): ditto.
-	  (match_inspect): ditto.
-
-	* string.c (rb_str_subpat_set): use RMATCH_REGS.
-	  (rb_str_sub_bang): ditto.
-	  (str_gsub): ditto.
-	  (rb_str_split_m): ditto.
-	  (scan_once): ditto.
-
-	* gc.c (obj_free): free character offsets.
-
-Sun Feb 17 03:13:40 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/resource.rb: made version infos confirm to OS spec.
-
-	* {bcc32,win32}/Makefile.sub (*.rc): add dependency.
-
-Sat Feb 16 20:49:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_substr): optimized for UTF-8.
-
-Sat Feb 16 18:13:53 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_compatible): check encoding incapable arguments.
-
-Sat Feb 16 20:12:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (match_inspect): avoid SEGV with MatchData.allocate.inspect.
-
-Sat Feb 16 19:04:17 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (str_strlen): revert r15507. [ruby-dev:33810]
-
-Sat Feb 16 18:25:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (str_strlen): little more optimization.
-	  (rb_enc_nth): remove needless variable 'c'.
-
-Sat Feb 16 18:00:13 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_compatible): empty strings are always compatible.
-
-	* string.c (rb_enc_cr_str_buf_cat): ditto.
-
-Sat Feb 16 16:14:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_strlen): UTF-8 character count moved to str_strlen.
-	  (str_strlen): UTF-8 character count is only applicable for valid
-	  UTF-8 string.  [ruby-dev:33807]
-
-Sat Feb 16 13:16:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_sub_bang): stringize replacing hash values.
-	  (str_gsub): ditto.
-
-Sat Feb 16 13:01:33 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_enc_strlen): add search_nonascii like character
-	  counter for UTF-8.
-
-Sat Feb 16 11:53:35 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_strlen): moved to string.c.
-
-	* string.c (rb_enc_strlen): use search_nonascii.
-	  (str_strlen): don't use search_nonascii.
-
-Sat Feb 16 11:45:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/require_relative.rb: check require_relative call in eval.
-
-Sat Feb 16 08:00:01 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (process_options): set default_external before loading
-	  libraries. [ruby-dev:33801]
-
-Sat Feb 16 05:49:54 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/iso_8859_{4,13}.c: Windows-1257 is replica of ISO-8859-13.
-
-	* string.c (single_byte_optimizable): rb_enc_mbminlen must be 1
-	  when rb_enc_mbmaxlen is 1.
-
-Sat Feb 16 03:43:18 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_nth): moved to string.c.
-
-	* string.c (rb_enc_nth): moved from string.c.  use search_nonascii
-	  for ASCII compatible string.
-	  (str_nth): wrong optimization removed to fix
-	  "a".force_encoding("EUC-JP").slice!(0,10) returns
-	  "a\x00\x00\x00\x00\x00\x00\x00\x00\x00"
-
-Sat Feb 16 00:21:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (rb_range_beg_len): check if responds to "begin" and "end"
-	  methods for non-Range object.
-
-Fri Feb 15 20:29:42 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_init_cp): initialize WIN32OLE.codepage
-	  according to Encoding.default_external.
-
-	* test/win32ole/test_win32ole.rb: ditto.
-
-Fri Feb 15 19:31:23 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/node.h (NODE_FL_NEWLINE): renamed from NODE_NEWLINE
-	  to denote its a flag.  [ruby-core:15529]
-
-Fri Feb 15 18:23:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_sub_bang, str_gsub): allows hash for replacement.
-
-Fri Feb 15 17:12:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_strlen): use search_nonascii() for performance.
-
-	* string.c (str_nth): ditto.
-
-Fri Feb 15 16:22:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (open_key_args): allow specifying both :mode and :encoding.
-
-Fri Feb 15 15:34:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_getbyte): new method.
-	  (rb_str_setbyte): new method.
-
-Fri Feb 15 15:29:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/require_relative.rb: new file.
-
-Fri Feb 15 15:23:12 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_convert): check upper bound.  a patch from
-	  Daniel Luz at [ruby-Bugs-17910].
-
-Fri Feb 15 10:35:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_quote): set US-ASCII for ASCII-only string.
-	  [ruby-dev:33785]
-
-Fri Feb 15 10:27:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {win,bcc}32/Makefile.sub (config.h): added HAVE_FTRUNCATE.
-	  [ruby-dev:33786]
-
-Fri Feb 15 09:44:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reg_compile_gen): reg_fragment_setenc might not raise an
-	  exception before rb_reg_compile.
-
-Fri Feb 15 07:37:40 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/paths.rb: Preserve compatibility with 1.8.
-
-Fri Feb 15 02:42:25 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (ftruncate): check if available.
-
-	* file.c (rb_file_truncate): check if ftruncate instead of truncate.
-
-Fri Feb 15 02:40:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (sigsetmask): check when signal semantics is not POSIX.
-
-	* signal.c (USE_TRAP_MASK): set true if sigprocmask or sigsetmask is
-	  available.
-
-Thu Feb 14 23:56:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_error.c (error_print): append a newline to rest lines.
-
-	* parse.y (reg_compile_gen): appends error message from
-	  rb_reg_compile() to one from reg_fragment_setenc().
-
-Thu Feb 14 21:00:14 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_reopen): check STDIN, STDOUT and STDERR mode according to
-	  stdio streams.
-
-Thu Feb 14 16:07:40 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_math.rb: actual-expected argument ordering for
-	  test_math.rb fixed.  a patch from Tadashi Saito
-	  <shiba AT mail2.accsnet.ne.jp> in [ruby-dev:33770].
-
-Thu Feb 14 16:02:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_file_s_utime): inhibits with secure level 2 or higher.
-
-Thu Feb 14 12:30:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_preprocess_dregexp): use non-preprocessed regexp source
-	  for result.
-
-Thu Feb 14 01:43:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/timeout.rb (Timeout::timeout): made sensitive to location on the
-	  stack.  [ruby-core:15458]
-
-Thu Feb 14 00:49:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (INSTRUBY_ARGS): pass mode to install.  [ruby-dev:33766]
-
-	* instruby.rb (parse_args): added --data-mode and --prog-mode options.
-
-Thu Feb 14 00:02:19 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* eval.c (eval): allow to eval in a binding that has a singleton method.
-	  [ruby-dev:33763]
-
-	* test/ruby/test_proc.rb: add tests to achieve over 70% test coverage
-	  of proc.c.
-
-	* test/ruby/test_method.rb: ditto.
-
-Wed Feb 13 22:46:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pathname.rb (Pathname#sub_ext): new method.  [ruby-list:44608]
-
-Wed Feb 13 21:50:32 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* proc.c (proc_curry): new method. [ruby-dev:33676]
-
-	* test/ruby/test_proc.rb: add tests for above.
-
-Wed Feb 13 20:48:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (RObject): add iv_index_tbl for shortcut of
-	  RCLASS_IV_INDEX_TBL(rb_obj_class(obj)).
-	  (ROBJECT_IV_INDEX_TBL): defined.
-
-	* object.c (init_copy): initialize iv_index_tbl in struct RObject.
-
-	* variable.c (ivar_get): use ROBJECT_IV_INDEX_TBL.
-	  (rb_ivar_defined): ditto.
-	  (obj_ivar_each): ditto.
-	  (rb_obj_remove_instance_variable): ditto.
-	  (rb_ivar_set): update iv_index_tbl in struct RObject.
-
-Wed Feb 13 16:21:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/generic.rb: revert r15442. 2nd argument of String#sub parse
-	  escapes. [ruby-dev:33726]
-
-	* bootstraptest/test_method.rb, enc/depend, instruby.rb, lib/mkmf.rb,
-	  mkconfig.rb: revert r15443. ditto.
-
-Wed Feb 13 11:20:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/depend: fix typo.
-
-	* lib/mkmf.rb: revert r15443. "\\1#{sep}\\2" is wrong if sep is ended
-	  with "\\".
-
-Wed Feb 13 08:57:21 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup/inline.rb:  Allow inline markup to have a leading
-	  '#' or '\', or trailing punctuation.  i.e. *#freeze?*, *\foo?*.
-
-Wed Feb 13 07:21:23 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/to_html_hyperlink.rb:  Moved linking to to_html.rb, move
-	  crossref to to_html_crossref.rb
-
-Wed Feb 13 04:15:44 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (arg_concat_gen, arg_append_gen): optimize for array push.
-
-	* parse.y (arg_concat_gen): optimize for array concat.
-
-	* parse.y (arg_add_gen): removed since identical to arg_append_gen.
-
-Tue Feb 12 21:04:51 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (exc_list): should use mrhs if non array.
-
-Tue Feb 12 20:32:50 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/rational.rb (floor, ceil, truncate, round): do not use
-	  definitions of Numeric.
-
-	* lib/rational.rb (to_i): should returns truncated self.
-
-	* lib/complex.rb (numerator): requires
-	  Integer#{numerator,denominator}.
-
-	* lib/complex.rb (quo): do not use definition of Numeric.
-
-	* lib/complex.rb (>, >=, <, <=, between?, div, divmod, modulo,
-	  floor, ceil, truncate, round): undef'ed.
-
-	* lib/mathn.rb (Rational#inspect): removed.
-
-Tue Feb 12 16:48:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (args, mrhs): flattens literal array splats.
-
-	* parse.y (exc_list): splat literal array.
-
-Tue Feb 12 15:27:19 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* bootstraptest/runner.rb, bootstraptest/test_method.rb, enc/depend,
-	  instruby.rb, lib/mkmf.rb, lib/test/unit/util/procwrapper.rb,
-	  mkconfig.rb, sample/test.rb, template/vm.inc.tmpl,
-	  test/ruby/test_stringchar.rb: fixes around String#gsub.
-
-Tue Feb 12 15:11:47 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json/lib/json/pure/generator.rb,
-	  ext/json/lib/json/pure/parser.rb, ext/openssl/lib/openssl/x509.rb,
-	  ext/win32ole/sample/olegen.rb, lib/date/format.rb, lib/irb/context.rb,
-	  lib/irb/workspace.rb, lib/net/http.rb, lib/net/imap.rb,
-	  lib/rdoc/generator.rb, lib/rdoc/markup/to_html.rb,
-	  lib/rdoc/markup/to_latex.rb, lib/rdoc/parsers/parse_c.rb,
-	  lib/rdoc/ri/formatter.rb, lib/rexml/parsers/baseparser.rb,
-	  lib/rexml/quickpath.rb, lib/rexml/text.rb, lib/rss/parser.rb,
-	  lib/uri/common.rb, lib/uri/generic.rb, lib/webrick/httpresponse.rb,
-	  lib/webrick/httpservlet/filehandler.rb, lib/yaml/baseemitter.rb,
-	  lib/yaml/encoding.rb: performance tuning around String#gsub.
-
-Tue Feb 12 12:16:45 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_hash_cmp): lighter version of rb_str_cmp() for
-	  hash comparison function.
-
-	* hash.c (rb_any_cmp): use rb_str_hash_cmp().
-
-	* string.c (rb_str_casecmp): should return nil for incompatible
-	  comparison.
-
-Tue Feb 12 12:13:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* instruby.rb: specify file mode to install.  a patch from
-	  pegacorn  <subscriber.jp AT gmail.com> in [ruby-dev:33699].
-
-Tue Feb 12 11:38:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* numeric.c (rb_num_coerce_bin): add ID argument to specify
-	  caller's method name.  [ruby-dev:33663]
-
-	* numeric.c (rb_num_coerce_cmp): ditto.
-
-	* numeric.c (rb_num_coerce_relop): ditto.
-
-	* ext/bigdecimal/bigdecimal.c (DoSomeOne): add function name argument.
-
-Tue Feb 12 10:25:02 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/rdoc.rb:  Wrap parse_files' read in version check for
-	  backwards compatibility.
-
-Tue Feb 12 10:15:14 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (load_file): enc must effect source encoding.
-	  [ruby-core:15496]
-
-Tue Feb 12 10:16:47 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/paths.rb:  Restore require rubygems check.
-
-Tue Feb 12 02:42:27 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_include): specialize single character string
-	  case (e.g. (?a ..?z).include(?x)) for performance.
-	  [ruby-core:15481]
-
-	* string.c (rb_str_upto): specialize single character case.
-
-	* string.c (rb_str_hash): omit coderange scan for performance.
-
-	* object.c (rb_check_to_integer): check Fixnum first.
-
-	* object.c (rb_to_integer): ditto.
-
-	* string.c (rb_str_equal): inline memcmp to avoid unnecessary
-	  rb_str_comparable().
-
-	* parse.y (rb_intern2): use US-ASCII encoding.
-
-	* parse.y (rb_intern_str): ditto.
-
-Mon Feb 11 17:21:18 2008  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb (RSS::VERSION), test/rss/test_version.rb:
-	  0.2.3 -> 0.2.4.
-
-	* lib/rss/maker.rb, lib/rss/maker/, test/rss/test_maker_2.0.rb:
-	  fixed a bug that RSS::Maker.make("0.9")'s item doesn't make some
-	  elements if description is missed.
-	  Reported by Michael Auzenne. Thanks!!!
-
-	* lib/rss/maker/0.9.rb, test/rss/test_maker_0.9.rb:
-	  RSS::Maker.make("0.9") generates RSS 0.92 not RSS 0.91.
-
-Mon Feb 11 10:43:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (load_file): the encoding of DATA follows the source
-	  file encoding. [ruby-dev:33693]
-
-Mon Feb 11 06:50:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_pack.rb: fix tests for 64bit CPU.
-
-	* test/ruby/test_bignum.rb: ditto.
-
-	* test/ruby/test_file_exhaustive.rb: ditto.
-
-	* test/ruby/test_integer.rb: ditto.
-
-	* test/ruby/test_time.rb: ditto.
-
-	* test/ruby/test_numeric.rb: ditto.
-
-	* test/ruby/test_fixnum.rb: ditto.
-
-Mon Feb 11 00:18:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/benchmark.rb (Job::Benchmark#item): fix typo.
-
-Sun Feb 10 21:58:32 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (encdb, transdb): depend on $(PREP).
-
-Sun Feb 10 16:58:20 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*, test/rubygems*, gem_prelude.rb: Import RubyGems
-	  r1601.  [ruby-core:15381]
-
-Sun Feb 10 15:07:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc32,win32,wince}/Makefile.sub (MISSING): added cbrt.obj.
-
-Sun Feb 10 12:58:33 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/code_objects.rb: Make some attributes accessible for reuse.
-	* lib/rdoc/generator/html.rb: Pull out ContextUser classes and related
-	  methods for reuse.
-	* lib/rdoc/generator.rb: Move ContextUser classes to
-	  RDoc::Generator::Context for reuse.
-	* lib/rdoc/rdoc.rb: Make RDoc::RDoc initialization a little easier.
-	* lib/rdoc/options.rb: Make RDoc::Options easier to use without
-	  parsing an ARGV.
-	* lib/rdoc/markup/to_*.rb: Subclass RDoc::Markup::Formatter.
-	* lib/rdoc/markup/formatter.rb: Add RDoc::Markup::Formatter to make
-	  RDoc markup conversion easier.
-	* lib/rdoc/markup/fragments.rb: Make RDoc::Markup::ListItem easier to
-	  test.
-	* lib/rdoc/markup/to_html_hyperlink.rb: Pulled out of the HTML
-	  generator for easier reusability.
-	* lib/rdoc/markup.rb: Fix bug with labeled lists containing bullet
-	  lists.
-	* lib/rdoc/generators/html/html.rb: Fix Constant display.
-
-Sat Feb  9 23:44:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/tgamma.c (tgamma): use lgamma_r if available.
-
-Sat Feb  9 23:22:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/extconf.rb: simplified the condition.
-
-Sat Feb  9 21:20:28 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_math.rb: add tests for Math.gamma, Math.lgamma and
-	  Math.cbrt, and use assert_in_delta instead of assert.
-
-Sat Feb  9 18:34:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* math.c (math_cbrt): new method Math.cbrt.
-
-	* configure.in (cbrt): check for replacement functions.
-
-	* missing/cbrt.c: new file.
-
-Sat Feb  9 17:51:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_to_f): use strtod() for more
-	  precision.  [ruby-talk:290296]
-
-	* ext/bigdecimal/bigdecimal.c (BASE_FIG): made constant.
-
-	* ext/bigdecimal/extconf.rb: ditto.  [ruby-dev:33658]
-
-Sat Feb  9 12:06:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/tgamma.c (tgamma): add error check.
-
-Sat Feb  9 11:47:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* math.c (math_gamma): add error check.
-	  (math_lgamma): ditto.
-
-Sat Feb  9 11:09:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/lgamma_r.c (lgamma_r): return HUGE_VAL for non-positive
-	  integers.
-
-Sat Feb  9 10:03:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_new4): copy encoding from orig, instead of shared
-	  one.
-
-Sat Feb  9 01:01:38 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* file.c (lchmod_internal): fix warning cast from pointer to integer of
-	  different size.
-
-Sat Feb  9 00:44:52 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/irb.rb (IRB::Irb::eval_input): rescues Interrupt and other than
-	  SystemExit and SignalException.  [ruby-core:15359]
-
-Fri Feb  8 23:51:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/lgamma_r.c (lgamma_r): use smaller argument for sin function.
-
-Fri Feb  8 22:10:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI.open_http): rescue URI::InvalidURIError by
-	  URI.parse for location URI.
-
-Fri Feb  8 19:22:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (rb_str_derive): uses rb_str_subseq() for byte
-	  length.  [ruby-dev:33653]
-
-	* ext/iconv/iconv.c (iconv_convert): added toidx argument to set
-	  encoding of successfully converted string.  [ruby-dev:33221]
-
-Fri Feb  8 15:09:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (xsystem): expand macros like as make.
-
-Fri Feb  8 09:27:57 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rdoc/ri/driver.rb (read_yaml): remove SM* for compatibility.
-
-Fri Feb  8 00:07:24 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_hash.rb: follow the change of Hash#flatten.
-
-	* test/ruby/test_time.rb: add tests to achieve over 70% test coverage
-	  of time.c.
-
-	* test/ruby/test_prec.rb: ditto over 90% for prec.c.
-
-Thu Feb  7 19:11:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_dup): reverted unneeded change.  [ruby-dev:33634]
-
-	* string.c (rb_str_replace): makes frozen shared string before
-	  sharing.
-
-Thu Feb  7 16:33:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_reopen): don't change access mode for stdin, stdout and
-	  stderr.  [ruby-core:15360]
-
-Thu Feb  7 16:33:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_replace_shared): replaces string with sharing.
-
-	* string.c (rb_str_new4, rb_str_associate, rb_str_associated): allows
-	  associated strings shared.
-
-	* string.c (rb_str_dup, rb_str_substr, rb_str_replace): shares memory.
-	  [ruby-core:15400]
-
-Thu Feb  7 15:42:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_end_with): compares with the suffix.
-
-Thu Feb  7 15:03:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/korean.c: add support for CP949 by Park Ji-In.
-	  [ruby-dev:33626]
-
-Thu Feb  7 11:11:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* missing/lgamma_r.c (lgamma_r): some compilers don't permit dividing
-	  by literal 0.0. use const variable instead.
-
-	* {bcc32,win32,wince}/Makefile.sub (MISSING): add lgamma_r.obj and
-	  tgamma.obj.
-
-Thu Feb  7 10:39:21 2008  Tanaka Akira  <akr@fsij.org>
-
-	* math.c (math_gamma): new method Math.gamma.
-	  (math_lgamma): new method Math.lgamma.
-
-	* include/ruby/missing.h (tgamma): declared unless HAVE_TGAMMA.
-	  (lgamma_r): declared unless HAVE_LGAMMA_R.
-
-	* configure.in (tgamma): check for replacement functions.
-	  (lgamma_r): ditto.
-
-	* missing/tgamma.c: new file.  based on gamma.c from
-	  "C-gengo niyoru saishin algorithm jiten" (New Algorithm handbook
-	  in C language) (Gijyutsu hyouron sha, Tokyo, 1991)
-	  by Haruhiko Okumura.
-
-	* missing/lgamma_r.c: ditto.
-
-	* LEGAL (missing/tgamma.c): describe as public domain.
-	  (missing/lgamma_r.c): ditto.
-
-Thu Feb  7 09:05:57 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c (nkf_enc_from_index): BINARY does not
-	  have in-bound encoding index.
-
-Thu Feb  7 04:26:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/korean.c: add EUC-KR conversion support by Park Ji-In.
-	  [ruby-dev:33621]
-
-Wed Feb  6 01:47:39 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_flatten): do not flatten recursively by default.
-	  [ruby-dev:33603]
-
-Wed Feb  6 00:50:19 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* insns.def (adjuststack): never use INC_SP with minus value because
-	  some compilers cannot deal it correctly. use DEC_SP instead.
-
-Wed Feb  6 00:48:41 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_hash.rb: add tests to achieve over 90% test coverage
-	  of hash.c.
-
-	* test/ruby/test_env.rb: ditto.
-
-Wed Feb  6 00:24:49 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* hash.c (env_rassoc): remove access to free'd environment on mswin32.
-
-Tue Feb  5 21:57:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm.c (rb_call_super): pass a passed block when super is called via
-	  rb_call_super.  [ruby-dev:33598]
-
-Tue Feb  5 11:14:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (INSTALL_DIRS, install_dirs): added BINDIR.
-
-	* lib/mkmf.rb (install_files): rejects files matching to
-	  $NONINSTALLFILES.
-
-	* lib/mkmf.rb (init_mkmf): defaults $NONINSTALLFILES to backup and
-	  temporary files.
-
-Mon Feb  4 21:52:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/delegate.rb (DelegateClass): use define_method instead of
-	  module_eval to improve performance.  [ruby-dev:33586]
-
-Mon Feb  4 16:44:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (darwin): NSIG is not defined if _XOPEN_SOURCE > 500L.
-	  [ruby-dev:33584]
-
-Mon Feb  4 14:51:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_enc_symname2_p): support "!", "!=" and "!~".
-	  [ruby-dev:33592]
-
-Mon Feb  4 13:58:42 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/delegate.rb (Delegator.preserved, DelegateClass.methods): extend
-	  shouldn't be delegated. [ruby-dev:32987], etc.
-
-Mon Feb  4 08:59:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi.rb (CGI::QueryExtension::[]): no more transition
-	  extend(CGI::Value).  a patch from <tommy AT tmtm.org> in
-	  [ruby-dev:33583].
-
-Sun Feb  3 21:13:13 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_numeric.rb: forgot to add this (at r15360).
-
-	* test/ruby/test_file_exhaustive.rb: add tests to achieve over 80% test
-	  coverage of file.c.
-
-Sat Feb  2 20:06:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/benchmark.rb (Benchmark::realtime): make Benchmark#realtime
-	  a bit faster.  a patch from Alexander Dymo <dymo AT ukrpost.ua> in
-	  [ruby-core:15337].
-
-Sat Feb  2 17:40:21 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* time.c (time_cmp): Time.<=> no longer supports comparison with
-	  numeric. [ruby-core:15332]
-
-Sat Feb  2 09:53:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (darwin): disabled fat-binary support which confuses
-	  configure much, since ``universal'' implies hidden cross-compiling.
-	  TODO: ruby and libruby.bundle might be possible to bound with `lipo'
-	  after builds for each archs.  Anyway, config.h and rbconfig.rb must
-	  be separated definitely at least.
-
-Sat Feb  2 09:28:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* random.c (limited_big_rand): fix buffer overflow when SIZEOF_BDIGITS
-	  is 2.  fixed by Kenta Murata.  [ruby-dev:33565]
-
-Fri Feb  1 21:42:37 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (darwin): _XOPEN_SOURCE is necessary to make ucontext_t
-	  consistent with the library implementation of MacOS X 10.5.
-	  [ruby-dev:33461]
-
-	* configure.in (darwin): ucontext on PowerPC MacOS X 10.5 is broken.
-
-Fri Feb  1 11:44:22 2008  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb (C_ESC): use octal escape to avoid
-	  "\x09for (;;) ..." to be interpret the first character 0x9f.
-
-Thu Jan 31 23:06:42 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_bignum.rb: suppress warnings during test.
-
-	* test/ruby/test_enum.rb: ditto.
-
-	* test/ruby/test_integer.rb: add tests to achieve over 90% test
-	  coverage of numeric.c.
-
-	* test/ruby/test_float.rb: ditto.
-
-	* test/ruby/test_fixnum.rb: ditto.
-
-	* test/ruby/test_numeric.rb: ditto.
-
-	* test/ruby/test_pack.rb: add tests to achieve over 90% test coverage
-	  of pack.c.
-
-Thu Jan 31 17:30:42 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* marshal.c (r_object0): no need to call r_entry for immediate values.
-
-Thu Jan 31 15:46:30 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/formatter.rb (output): add accessor.
-
-	* lib/rdoc/ri/display.rb (page): replace @formatter.output instead of
-	  $stdout.
-
-Thu Jan 31 15:06:50 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* marshal.c (r_object0): call r_entry/r_leave to call proc when
-	  TYPE_FIXNUM, TYPE_NIL, TYPE_TRUE, TYPE_FALSE, TYPE_SYMBOL.
-
-Thu Jan 31 14:03:38 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/display.rb (display_method_list, display_class_list):
-	  use @formatter.raw_print_line instead of puts.
-
-	* lib/rdoc/ri/driver.rb (select_methods): new method to collect all
-	  instance/class methods which match with passed pattern.
-
-	* lib/rdoc/ri/driver.rb (run): use class_cache's result directly
-	  instead of select_classes' because it's removed now.
-
-	* lib/rdoc/ri/driver.rb (run): search methods when passed name is not
-	  class name. [ruby-core:15309]
-
-Thu Jan 31 08:31:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ext/extmk.rb, instruby.rb): inlined $(MAKE) so that can
-	  be executed even with -n.
-
-Thu Jan 31 06:24:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_close_read): replaces fptr with the tied writer if
-	  duplex.
-
-	* io.c (rb_io_close_write): unties the tied IO for writing if duplex.
-	  [ruby-dev:33532]
-
-Thu Jan 31 02:22:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (open_key_args): allow encoding key to take two encoding
-	  names.  a patch from <rubikitch AT ruby-lang.org>.  [ruby-dev:33540]
-
-Thu Jan 31 02:15:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (dsym): allow empty symbols.  [ruby-core:15248]
-
-Thu Jan 31 00:01:51 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (select_internal): fix SEGV by `select [STDIN],nil,[STDIN]'.
-	  fixed by Petr Chromec.
-	  http://rubyforge.org/tracker/index.php?func=detail&aid=17275&group_id=426&atid=1698
-
-Wed Jan 30 17:32:49 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/*.c: add GB12345, UCS-{2,4}{BE,LE}.
-
-Wed Jan 30 14:32:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rdoc/ri/driver.rb (cache_file_for): shouldn't use `:' in filename.
-
-Wed Jan 30 14:27:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_succ): use wrapped character as a carry for
-	  ASCII incompatible encoding.
-
-Wed Jan 30 12:26:59 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/utf_16be.c (UTF16_IS_SURROGATE_FIRST): avoid branch.
-	  (UTF16_IS_SURROGATE_SECOND): ditto.
-	  (UTF16_IS_SURROGATE): defined.
-	  (utf16be_mbc_enc_len): validation implemented.
-
-	* enc/utf_16le.c (UTF16_IS_SURROGATE_FIRST): avoid branch.
-	  (UTF16_IS_SURROGATE_SECOND): ditto.
-	  (UTF16_IS_SURROGATE): defined.
-	  (utf16le_mbc_enc_len): validation implemented.
-
-Wed Jan 30 12:06:43 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* bignum.c (rb_cstr_to_inum): '0_2' is a valid representation.
-
-Wed Jan 30 11:57:50 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* bootstraptest/runner.rb: fix -I../../hoge case.
-
-Wed Jan 30 01:25:16 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_range.rb: add tests to achieve over 90% test coverage
-	  of range.c.
-
-Wed Jan 30 00:09:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/euc_tw.c (euctw_mbc_enc_len): validation implemented.
-
-Tue Jan 29 22:58:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_enumerator.rb: add tests to achieve over 90% test
-	  coverage of enumerator.c.
-
-	* test/ruby/test_enum.rb: add for enum.c.
-
-Tue Jan 29 22:29:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enumerator.c: fix documents.
-
-Tue Jan 29 22:27:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* range.c: fix SEGV by ("a" .. "z").step(2 ** 30) { }.
-
-Tue Jan 29 21:59:16 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/euc_tw.c (euctw_islead): 0x8e is a leading byte.
-
-Tue Jan 29 21:55:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c: move object allocation out of blocking_region.
-	  [ruby-dev:33139]
-
-Tue Jan 29 20:37:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/make_transdb.rb: add for make transdb.h.
-
-	* dmytranscode.c: add for miniruby.
-
-	* enc/gbk.c (gbk_left_adjust_char_head, gbk_is_allowed_reverse_match):
-	  fix odd regexp match. [ruby-dev:33502]
-
-Tue Jan 29 20:17:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32}/Makefile.sub (MINIOBJS): add dmytranscode.$(OBJEXT).
-
-Tue Jan 29 19:39:40 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in, common.mk: fix rule for dmytranscode.o.
-
-Tue Jan 29 19:03:16 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/trans/japanese.c (rb_to_Windows_31J): to 'Windows-31J'.
-
-	* common.mk: add rules for transdb.h.
-
-	* transcode.c (init_transcoder_table): use transdb.h.
-
-Tue Jan 29 18:05:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (encdb_{replicate,alias,dummy,declare}): define only if
-	  NO_ENCDB_H is not defined.
-
-Tue Jan 29 17:54:11 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/gbk.c (EncLen_gbk): too short. [ruby-dev:33497]
-
-Tue Jan 29 17:25:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* dmyencoding.c, encoding.c (enc_init_db, NO_ENCDB_H):
-	  miniruby doesn't use encdb.
-
-	* common.mk: encdb.h use miniruby.
-
-Tue Jan 29 17:37:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/gb18030.c (gb18030_mbc_enc_len): validation implemented.
-
-Tue Jan 29 17:01:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* tool/ifchange: remove $temp when unchanged.
-
-Tue Jan 29 16:59:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* insns.def (toregexp): generate a regexp from strings instead of one
-	  string.
-
-	* re.c (rb_reg_new_ary): defined for toregexp.  it concatenates
-	  strings after each string is preprocessed.
-
-	* compile.c (compile_dstr_fragments): split from compile_dstr.
-	  (compile_dstr): call compile_dstr_fragments.
-	  (compile_dregx): defined for dynamic regexp.
-	  (iseq_compile_each): use compile_dregx for dynamic regexp.
-
-	  [ruby-dev:33400]
-
-Tue Jan 29 16:25:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk, ext/extmk.rb: always make encdb.h.
-
-Tue Jan 29 12:53:39 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/gbk.c: add GBK, CP936 and CP949.
-
-	* enc/euc_kr.c: remove CP949.
-
-	* enc/euc_cn.c: remove CP936 and rename to gb2312.c
-
-	* enc/gb2312.c: GB2312 is preferred MIME name.
-
-Tue Jan 29 03:01:29 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (reg_fragment_setenc_gen): US-ASCII script special code.
-
-	* parse.y (reg_fragment_check_len, reg_compile_gen): no need such
-	  trick.
-	  [ruby-dev:33399]
-
-	* test/ruby/test_m17n.rb (test_regexp_usacii_literal): add tests.
-
-Tue Jan 29 01:38:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk ($(srcdir)/revision.h): no need to show ifchange execution
-	  because ifchange echos updated or unchanged.
-
-Tue Jan 29 01:26:23 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (up): use last changed revision.
-
-	* common.mk (up): force to update revision.h.
-
-Tue Jan 29 00:12:17 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bignum.c (rb_big2str0): should be US-ASCII.
-
-Tue Jan 29 00:10:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode-set-encoding): updates magic comment.
-
-Mon Jan 28 23:47:52 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (rb_id2str, ripper_initialize, Init_ripper):
-	  use rb_usascii_str_new2. [ruby-dev:33449]
-
-Mon Jan 28 19:37:08 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/win32ole/win32ole.c (ole_cp2encoding): new function.
-
-	* ext/win32ole/win32ole.c (ole_wc2vstr, ole_variant2val, fole_missing):
-	  set encoding to result.
-
-	* ext/win32ole/win32ole.c (fole_s_set_code_page, Init_win32ole): set
-	  default encoding.
-	  [ruby-dev:33433]
-
-Mon Jan 28 11:17:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c, parse.y, re.c: use rb_ascii8bit_encoding.
-
-Mon Jan 28 17:54:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_7.h: add dummy encoding UTF-7 and its alias CP65000.
-
-Mon Jan 28 17:41:19 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/utf_8.c: add alias CP65001.
-
-Mon Jan 28 15:33:23 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/big5.c (big5_mbc_enc_len): validation implemented.
-
-Mon Jan 28 13:02:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/euc_kr.c (euckr_mbc_enc_len): validation implemented.
-
-Mon Jan 28 11:24:49 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_str_new): encoding of UTF-8 literal string in
-	  US-ASCII script is UTF-8. [ruby-dev:33406]
-
-Mon Jan 28 10:25:59 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_m17n.rb (test_magic_comment): add test.
-
-Mon Jan 28 09:34:54 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (help): use double quotes for nmake.
-
-Mon Jan 28 00:39:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_set_encode): check if encoding is ASCII compatible.
-
-Mon Jan 28 01:21:15 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_open_file): should check NUL in path.
-	  <http://www.rubyist.net/~matz/20080125.html#c01>.
-
-	* io.c (rb_io_s_popen): ditto.
-
-	* io.c (rb_io_reopen): ditto.
-
-	* io.c (next_argv): ditto.
-
-Sun Jan 27 23:33:35 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): fix for left justify flag.
-
-	* sprintf.c (rb_str_format): zero-precision zero bug revised.
-	  [ruby-dev:33419]
-
-Sun Jan 27 23:20:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h: precise mbclen API redesigned to avoid
-	  inline functions.
-	  (onigenc_mbclen_charfound): removed.
-	  (onigenc_mbclen_needmore): removed.
-	  (onigenc_mbclen_recover): removed.
-	  (ONIGENC_MBCLEN_CHARFOUND): removed.
-	  (ONIGENC_MBCLEN_CHARFOUND_P): defined.
-	  (ONIGENC_MBCLEN_CHARFOUND_LEN): defined.
-	  (ONIGENC_MBCLEN_INVALID): removed.
-	  (ONIGENC_MBCLEN_INVALID_P): defined.
-	  (ONIGENC_MBCLEN_NEEDMORE): removed.
-	  (ONIGENC_MBCLEN_NEEDMORE_P): defined.
-	  (ONIGENC_MBCLEN_NEEDMORE_LEN): defined.
-	  (ONIGENC_MBC_ENC_LEN): use onigenc_mbclen_approximate.
-
-	* regenc.c (onigenc_mbclen_approximate): defined.
-
-	* include/ruby/encoding.h (MBCLEN_CHARFOUND): removed.
-	  (MBCLEN_INVALID): removed.
-	  (MBCLEN_NEEDMORE): removed.
-	  (MBCLEN_CHARFOUND_P): defined.
-	  (MBCLEN_INVALID_P): defined.
-	  (MBCLEN_NEEDMORE_P): defined.
-	  (MBCLEN_CHARFOUND_LEN): defined.
-	  (MBCLEN_NEEDMORE_LEN): defined.
-
-	* encoding.c: use new API.
-
-	* re.c: ditto.
-
-	* string.c: ditto.
-
-	* parse.y: ditto.
-
-Sun Jan 27 22:55:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (value_expr_gen): reverted r12880.  [ruby-dev:33388]
-
-Sun Jan 27 22:33:39 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): fix for octal with precision.
-	  [ruby-dev:33411]
-
-Sun Jan 27 22:31:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-mode-set-encoding): automatically insert
-	  encoding magic comment.
-
-	* misc/ruby-mode.el (ruby-mode): set ruby-mode-set-encoding to buffer
-	  local before-save-hook.
-
-Sun Jan 27 19:51:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_inspect): avoid exception by
-	  "\#\xa1".force_encoding("euc-jp").inspect.
-
-Sun Jan 27 19:07:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_succ): warning suppressed.
-
-Sun Jan 27 18:18:13 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk (help): show major targets.
-
-Sun Jan 27 17:54:48 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c: raise error when no output encoding is given.
-
-Sun Jan 27 17:20:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_succ): don't increment/decrement codepoint.
-
-Sun Jan 27 16:03:42 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/irb/ruby-lex.rb (RubyLex#buf_input): use chars.to_a.
-
-Sun Jan 27 16:27:22 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8: update nkf.
-
-Sun Jan 27 16:25:27 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* re.c (rb_reg_source): set encoding as regexp encoding.
-
-Sun Jan 27 05:56:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_preprocess): force fixed encoding when ASCII
-	  incompatible source string.
-
-Sat Jan 26 23:46:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): zero-precision zero should be empty.
-	  [ruby-dev:33363]
-
-	* sprintf.c (rb_str_format): not prepend octal prefix to negative or
-	  zero value.  [ruby-dev:33363], [ruby-dev:33367]
-
-Sat Jan 26 23:42:15 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (assignable_gen, keyword_to_name): __ENCODING__ was missing.
-
-Sat Jan 26 19:08:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (w_object): dump string encoding in USERDEF.
-	  [ruby-dev:33401]
-
-Sat Jan 26 17:42:23 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): validate argument expr of "next"
-	  statement.
-
-	* bootstraptest/test_syntax.rb: add a test.
-
-Sat Jan 26 17:22:46 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, compile.h: fix to calculate correct stack depth
-	   at each instruction.
-
-Sat Jan 26 09:41:02 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rexml/doctype.rb, test/rss/test_maker_itunes.rb: replace
-	  multi-byte string.
-
-	* test/json/{test_json.rb, test_json_unicode.rb}:
-	  add magic comment.
-
-Sat Jan 26 09:30:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_usascii_encindex): added prototype.
-
-	* include/ruby/intern.h (rb_usascii_str_new, rb_usascii_str_new2):
-	  ditto.
-
-Sat Jan 26 09:17:13 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_new): set US-ASCII and ENC_CODERANGE_7BIT when
-	  empty string (len == 0).
-
-Sat Jan 26 03:41:53 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_initialize): set default script encoding as US-ASCII.
-
-	* ruby.c (load_file): ditto.
-
-	* ruby.c (process_options): set script encoding of -e from locale
-	  except when -K is specified.
-
-	* ruby.c (load_file): set script encoding of stdin from locale except
-	  when -K is specified. [ruby-dev:33375]
-
-Sat Jan 26 02:51:06 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, compile.h: fix stack pointer issues.
-	  calculate correct stack depth at compile time.
-
-	* insns.def (emptstack): remove it and add a new insn "adjuststack".
-
-	* bootstraptest/test_knownbug.rb: move/remove fixed test.
-
-	* bootstraptest/test_syntax.rb: ditto.
-
-Sat Jan 26 00:17:18 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* string.c (rb_str_usascii_new{,2}: defined.
-	  (rb_str_new): set US-ASCII and ENC_CODERANGE_7BIT when empty
-	  string.
-
-	* encoding.c (rb_usascii_encoding, rb_usascii_encindex): defined.
-	  (rb_enc_inspect, enc_name, rb_locale_charmap, rb_enc_name_list_i):
-	  use rb_str_ascii_new.
-
-	* array.c (recursive_join, inspect_ary): ditto.
-
-	* object.c (nil_to_s, nil_inspect, true_to_s, false_to_s,
-	  rb_mod_to_s): ditto.
-
-	* hash.c (inspect_hash, rb_hash_inspect, rb_f_getenv, env_fetch,
-	  env_clear, env_to_s, env_inspect): ditto.
-
-	* numeric.c (flo_to_s, int_chr, rb_fix2str): ditto.
-
-	* bignum.c (rb_big2str): ditto.
-
-	* file.c (rb_file_ftype, rb_file_s_dirname, rb_file_s_extname,
-	  file_inspect_join, Init_file): ditto.
-
-	* test/ruby/test_ruby_m17n.rb: add checks for encoding of string.
-
-Sat Jan 26 01:35:46 2008  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (r_byte): use getbyte instead of getc.
-	  (marshal_load): ditto.
-	  [ruby-dev:33264]
-
-Sat Jan 26 00:43:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_getline_fast): don't care ASCII incompatible encoding.
-	  (prepare_getline_args): generate a newline according to IO encoding
-	  when necessary.
-	  (rb_io_getline_1): call rb_io_getline_fast only for ASCII
-	  compatible encoding.
-
-Fri Jan 25 21:49:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_buf_cat_ascii): use rb_enc_cr_str_buf_cat.
-
-Fri Jan 25 19:38:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (version.$(OBJEXT)): depends on $(srcdir)/revision.h.
-
-	* common.mk (revision.h): extracts revision number with ``svn info''.
-
-	* common.mk (up): target to update from the repository.
-
-	* Makefile.in, {win,bcc}32/Makefile.sub (IFCHANGE): tool to update a
-	  file if changed.
-
-	* tool/ifchange: for unixen.
-
-	* win32/ifchange.bat: some fix
-
-Fri Jan 25 17:12:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file): set default to ASCII-8BIT explicitly if -K
-	  option is not given.
-
-Fri Jan 25 16:31:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_str_buf_cat_ascii): declared.
-
-	* string.c (rb_str_buf_cat_ascii): defined.
-
-	* re.c (rb_reg_s_union): use rb_str_buf_cat_ascii to support ASCII
-	  incompatible encoding.
-
-Fri Jan 25 16:11:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options, load_file, rb_load_file): propagates script
-	  encoding by -K to libraries.  [ruby-dev:33156]
-
-Fri Jan 25 15:56:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (cmdline_arguments): split argc and argv from cmdline_options.
-
-	* ruby.c (process_options): not set encoding of -e option from -E
-	  option if they are not compatible.
-
-Fri Jan 25 13:15:23 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ruby.c (proc_options, process_options, load_file): shouldn't effect
-	  --encoding to script encoding. [ruby-dev:33169]
-
-Fri Jan 25 10:31:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* */*.bat: set svn:mime-type to text/batch.
-
-Thu Jan 24 23:23:06 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* enum.c (enum_one, enum_take_while, enum_drop_while): fix documents.
-
-Thu Jan 24 21:46:24 2008  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (reg_fragment_setenc_gen): associate ASCII-8BIT only if
-	  str has only ASCII characters.
-
-Thu Jan 24 20:46:17 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/ruby/test_m17n.rb: follow to the following changes.
-
-Thu Jan 24 20:21:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parser.y (parser_str_new): automatically update string literal's
-	  encoding from US-ASCII to ASCII-8BIT when script encoding is US-ASCII
-	  and the string includes non-ascii bytes. [ruby-dev:33348]
-
-	* parser.y (reg_fragment_check_gen, reg_compile_gen): automatically
-	  update regexp literal's encoding from US-ASCII to ASCII-8BIT when
-	  script encoding is US-ASCII, the regexp has no kcode option and the
-	  regexp includes non-ascii bytes. [ruby-dev:33353]
-
-Thu Jan 24 19:36:22 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic::inspect): use Kernel#to_s instead
-	  object_id with printf.  [ruby-dev:33347]
-
-Thu Jan 24 19:29:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (remove_sign_bits): returns pointer to the first char to
-	  be used, instead of copying.
-
-	* sprintf.c (rb_str_format): negative indicator dots should come
-	  before sign digits always.  [ruby-dev:33224]
-
-Thu Jan 24 18:19:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_is_newline): parenthesized arguments.
-
-Thu Jan 24 18:14:14 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* re.c (rb_reg_fixed_encoding_p): no need to treat ASCII-8BIT specially.
-
-Thu Jan 24 16:53:06 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): 7bit clean regexp should be US-ASCII.
-	  [ruby-dev:33346]
-
-Thu Jan 24 16:31:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_getline_fast): the end point of left_char_head()
-	  must be the last character.  [ruby-cvs:22445]
-
-Thu Jan 24 16:24:25 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (reg_fragment_setenc_gen): recognize regexp with option n as
-	  as ASCII-8BIT instead of US-ASCII. [ruby-dev:33339]
-
-Thu Jan 24 15:44:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (collect_bang_i): use rb_ary_store() to avoid potential
-	  memory corruption.  a patch from Yusuke Endoh <mame@tsg.ne.jp>
-	  in [ruby-dev:33328].
-
-	* array.c (ITERATE): remove unnecessary macro.
-
-	* array.c (sort_1): remove ary_sort_check().  in-place sort keep
-	  original elements even when it's modified.
-
-	* array.c (sort_2): ditto.
-
-Thu Jan 24 15:09:40 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (make_time_t): revert round trip test.  [ruby-dev:33058]
-
-Thu Jan 24 11:14:56 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): ASCII incompatible encoding is
-	  not compatible with any other encoding.
-
-Thu Jan 24 07:34:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* parse.y (STR_NEW0): set encoding as US-ASCII.
-
-Thu Jan 24 03:47:41 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rexml/text.rb, lib/rubygems/open-uri.rb, lib/open-uri.rb,
-	  test/logger/test_logger.rb, test/ruby/test_regexp.rb:
-	  fix tests. [ruby-dev:33336]
-
-Thu Jan 24 03:23:44 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_each_line): use memchr(3) for faster newline
-	  search.
-
-	* io.c (appendline): remove unused arguments
-
-	* io.c (rb_io_getline_fast): make much simpler (and faster).
-
-Thu Jan 24 02:13:07 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* insns.def (expandarray): fix stack inc.  [ruby-dev:32892]
-
-	* bootstraptest/test_knownbug.rb, test_massign.rb: move a fixed test.
-
-Thu Jan 24 01:00:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.{c, h} (rb_usascii_encoding): added.
-
-	* parse.y (parser_str_new, rb_intern3): ascii only string literal is
-	  US-ASCII.
-
-	* ruby.c (proc_optionc): -Kn means ASCII-8BIT.
-
-Wed Jan 23 23:54:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* sprintf.c: fix comment.  [ruby-dev:33275]
-
-	* math.c: fix comment.  [ruby-dev:33276]
-
-Wed Jan 23 22:47:34 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_struct.rb: add tests to achieve over 90% test
-	  coverage of struct.c.
-
-	* test/ruby/test_sprintf.rb: ditto for sprintf.c.
-
-	* test/ruby/test_math.rb: ditto for math.c.
-
-Wed Jan 23 22:14:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/japanese.c (rb_from_Windows_31J, rb_to_Windows_31J):
-	  provisional workaround for Windows-31J.  [ruby-dev:33320]
-
-Wed Jan 23 15:25:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_strftime): copy encoding from format.  [ruby-dev:33303]
-
-Wed Jan 23 15:04:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_make_independent): should set length.
-
-	* string.c (rb_str_associate): hide associated array from ObjectSpace.
-
-	* string.c (rb_str_associated): return associated array with freezing
-	  instead of false.  [ruby-dev:33282]
-
-	* string.c (rb_str_freeze): freeze associated array together.
-
-Wed Jan 23 13:39:48 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): fix SEGV by
-	  /a/ =~ "aa".force_encoding("utf-16be").
-
-Wed Jan 23 11:53:26 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_mod_check, str_nth, str_offset): constified.
-
-	* string.c (rb_str_dump): dump in ASCII-8BIT always.
-
-Wed Jan 23 10:18:10 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_method.c (rb_export_method): set ruby_vm_redefined_flag for
-	  visibility change as well.  reported by K.Kosako in
-	  http://d.hatena.ne.jp/kkos/20080122#1201012720.
-
-Tue Jan 22 22:26:23 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_bignum.rb: change some tests because rational
-	  redefines Bignum#quo and Bignum#**.
-
-Tue Jan 22 20:58:15 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): need to output sodir rule.
-
-Tue Jan 22 19:37:16 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): lib files shouldn't depend on install
-	  dir because if the dir is newer than lib files, lib files will be
-	  always copied.
-
-Tue Jan 22 17:52:52 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/utf_16_32.c: Streamline parentheses, add more
-	  'static' qualifiers.
-
-Tue Jan 22 12:57:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in (MINIRUBY): remove -I$(EXTOUT)/$(arch) from
-	  MINIRUBY since miniruby might not be able to load DLL.
-
-	* test/ruby/test_m17n.rb: move tests from bootstrap test.
-
-	* encoding.c (enc_find): should check name if ASCII compatible.
-
-	* string.c (rb_str_end_with): should check character boundary.
-
-	* encoding.c (rb_enc_compatible): encoding must be ASCII
-	  compatible before checking ENC_CODERANGE_7BIT.
-
-	* encoding.c (rb_enc_compatible): wrong compatibility condition.
-	  [ruby-dev:33273]
-
-Tue Jan 22 09:26:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_each_char): iterates over a shadow.
-	  [ruby-dev:33243]
-
-Tue Jan 22 08:59:52 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/formatter.rb:  Indent labeled lists like note lists.
-
-	* test/rdoc/test_rdoc_ri_overstrike_formatter.rb:  Added.
-
-	* test/rdoc/test_rdoc_ri_formatter.rb:  Added tests.
-
-Tue Jan 22 04:40:28 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (rb_intern3): do not call rb_enc_mbclen() if *m is
-	  ASCII.  [ruby-talk:287225]
-
-	* string.c (rb_str_each_line): use rb_enc_is_newline() to gain
-	  performance if the record separator ($/) is not modified.
-
-Tue Jan 22 01:15:51 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* ChangeLog: format-time-string under C locale. [ruby-dev:33261]
-
-Tue Jan 22 00:45:12 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* test/ruby/test_bignum.rb: add tests for bignum.c.
-
-Tue Jan 22 00:30:08 2008  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* bignum.c (big_shift): fix a bug that caused infinite loop when
-	  left shifting.
-
-Mon Jan 21 20:09:38 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (marshal_load): initialize the cache.
-
-Mon Jan 21 19:42:42 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c, enc/trans/utf_16_32.c, test/ruby/test_transcode.rb:
-	  added UTF-32BE and UTF-32LE conversions.
-
-Mon Jan 21 14:36:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (str_transcode): initialize transcoder in
-	  rb_transcoding.  [ruby-dev:33234]
-
-	* transcode_data.h (rb_transcoding): transcoder constified.
-
-Mon Jan 21 12:50:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c, gc.c (setjmp): sigsetjmp is a macro on cygwin.
-
-Mon Jan 21 12:35:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_loop, str_transcoding_resize): use unsigned
-	  char.  [ruby-dev:33232]
-
-	* transcode_data.h (rb_transcoding, rb_transcoder): removed callback
-	  parameters.
-
-	* enc/trans/japanese.c: ditto.
-
-	* enc/trans/utf_16_32.c: parenthesized bit-or operands.
-
-Mon Jan 21 11:59:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_each_char): move forward.  [ruby-dev:33231]
-
-Mon Jan 21 06:40:03 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_dispatch): constified return value.
-
-	* transcode_data.h (rb_transcoding): include pointer to rb_transcoder
-	  and auxiliary data.
-
-	* transcode_data.h (rb_transcoder): all callback functions should have
-	  their own parameters.
-
-	* enc/trans/{japanese,single_byte}.c: constified.
-
-Mon Jan 21 03:45:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_each_char): advance offset before get next char
-	  length.  [ruby-dev:33211]
-
-Sun Jan 20 20:00:20 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c, enc/trans/utf_16_32.c, test/ruby/test_transcode.rb:
-	  added UTF-16LE conversions.
-
-	* fixed changelog for last commit
-
-Sun Jan 20 17:54:00 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* added changelog for last commit
-
-Sun Jan 20 15:08:08 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/trans/utf_16_32.c: new file, currently implementing
-	  UTF-16BE conversions only.
-
-	* test/ruby/test_transcode.rb: Added tests for UTF-16BE;
-	  made check_both_ways() use force_encoding differently.
-
-	* transcode_data.h, transcode.c: Support for more conversion
-	  functions.
-
-Sun Jan 20 13:06:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_each_char): performance improvement, and stop if
-	  shortened in the block.  [ruby-dev:33189]
-
-Sun Jan 20 09:12:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* common.mk: use -Ks when read insns.def. [ruby-dev#33185]
-
-	* parse.y: fix -e and stdin strings aren't set encoding.
-
-Sun Jan 20 05:12:44 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/make_encdb.rb: fix duplication check.
-
-Sun Jan 20 05:03:46 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ascii.c: remove definition of replica KOI8-U.
-
-Sun Jan 20 00:33:59 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/koi8_u.c: added.
-
-	* regenc.c, enc/utf_8.c, enc/unicode.c, enc/gb18030.c: add ARG_UNUSED.
-
-Sat Jan 19 22:41:39 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (coderange_scan): don't call mbclen functions for ASCII
-	  characters with ASCII compatible encoding.
-
-Sat Jan 19 21:00:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/rdoc/template.rb (RDoc): defined to avoid uninitialized constant
-	  error by `./ruby test/rubygems/test_gem_server.rb'.
-
-Sat Jan 19 20:41:29 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (enc_new): don't free rb_encoding to avoid SEGV by
-	  `miniruby -e exit' on x86_64 GNU/Linux.
-
-Sat Jan 19 18:40:19 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (once): use an instance variable which points a hash
-	  as cache. [experimental]
-
-Sat Jan 19 17:21:29 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: parse's hints as an
-	  experimental function has been removed.
-
-Sat Jan 19 11:21:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (sigsetjmp): check if available.
-
-	* eval.c, gc.c (setjmp): do not use _setjmp if sigsetjmp is available.
-
-Sat Jan 19 11:10:11 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: Remove wrong assumptions about Cygwin.  a patch from
-	  Corinna Vinschen in [ruby-Bugs-17018].
-
-Sat Jan 19 09:23:14 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_set_safe_array): should not use
-	  recursive calling.
-
-	* test/win32ole/test_win32ole_variant.rb: ditto.
-
-Sat Jan 19 08:58:47 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup: Remove ListBase and Line constants.
-
-	* lib/rdoc/ri: Allow output IO to be specified.
-
-	* test/rdoc/parser/test_parse_c.rb: Move up one level, fixed.
-
-	* test/rdoc/parser/test_rdoc_markup_attribute_manager.rb: Renamed to
-	  match new class name, updated to match new classes.
-
-	* test/rdoc/test_rdoc_ri_formatter.rb: Start of RI formatting tests.
-
-	* test/rdoc/test_rdoc_ri_attribute_manager.rb: Start of
-	  RDoc::RI::AttributeManager tests.
-
-	* test/rdoc/test_simple_markup.rb: Moved to match new class name.
-
-Sat Jan 19 08:35:36 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_prepare): get encoding from the first line.
-	  [ruby-dev:33168]
-
-	* ruby.c (load_file): set encoding to input with set_encoding.
-
-Sat Jan 19 03:46:42 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (thread_create_core): prohibit thread creation in the
-	  frozen thread group.  a patch in [ruby-dev:33176] from sheepman
-	  <sheepman AT sheepman.sakura.ne.jp>.
-
-	* thread.c (thread_create_core): should inherit ThreadGroup from
-	  the current thread.
-
-Sat Jan 19 00:37:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): set result encoding for wider width.
-
-Sat Jan 19 00:13:19 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread_win32.c (w32_wait_events): shouldn't invoke interrupt handle
-	  by timer_thread.
-
-Fri Jan 18 23:49:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_create_core): set thread group before creating
-	  thread.
-
-Fri Jan 18 20:19:51 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (ripper_initialize): too early to set parser->enc.
-
-Fri Jan 18 20:03:05 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/setup.mak (BASERUBY): nmake cannot execute ruby correctly
-	  if the path of ruby.exe is quoted.
-
-	* win32/setup.mak ($(ARCH)): if a macro is appended by $(APPEND),
-	  a space will be inserted on the top of the line.
-
-Fri Jan 18 17:56:09 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h, insnhelper.h, thread_pthread.h, vm_core.h, vm_opts.h:
-	  prefixed include guards with RUBY.
-
-	* id.h: added include guard.
-
-	* regenc.h, regint.h, regparse.h: prefixed include guards with
-	  ONIGURUMA.
-
-Fri Jan 18 15:57:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_cleanup_func): ignore errors from destroying mutex
-	  of dead thread.  [ruby-core:15069]
-
-	* thread_pthread.c, thread_win32.c (native_thread_destroy): ditto.
-
-Fri Jan 18 15:56:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_name_list_i, rb_enc_aliases_enc_i): freeze
-	  element strings to be returned.
-
-Fri Jan 18 14:36:34 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* test/ruby/test_m17n.rb (test_str_dump): added test for
-	  String#dump. [ruby-dev:33142]
-
-Fri Jan 18 12:25:13 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (load_encoding): check if successfully loaded.
-
-	* encoding.c (rb_enc_find_index): use original encoding name to
-	  replicate loaded encoding instead alias.
-
-Fri Jan 18 09:43:02 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* re.c (rb_char_to_option_kcode): Regexp switch `s' should mean
-	  Windows-31J, as wells as `-Ks'.
-
-Fri Jan 18 09:22:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_initialize): explicitly call rb_ascii8bit_encoding().
-
-	* parse.y (parser_prepare): lex_input may not be have encoding (e.g. IO).
-
-	* parse.y (rb_parser_compile_string): set encoding from input string.
-
-	* encoding.c (rb_enc_find_index): use ASCII-8BIT if loading known
-	  encoding failed.
-
-	* parse.y (ripper_initialize): move parser->enc initialization.
-
-	* encoding.c (rb_enc_aliases_enc_i): exclude non alias names from
-	  Encoding.aliases.
-
-	* encoding.c (rb_enc_find_index): use original encoding name to
-	  load DLL.
-
-Fri Jan 18 07:06:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (Init_IO): stdin/stdout may not be duplex.
-
-Fri Jan 18 04:27:57 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* sample/rdoc/markup/rdoc2latex.rb:  Fix for new namespacing.
-
-	* lib/rdoc/markup/to_latex.rb:  Fix namespacing.
-
-Fri Jan 18 02:02:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/runner.rb (assert_valid_syntax): added.
-
-	* bootstraptest/test_knownbug.rb: added test for [ruby-list:44479]
-
-Fri Jan 18 01:48:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): check argument number to
-	  attr_reader.  [ruby-core:15120]
-
-Fri Jan 18 00:49:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_check_readable): flush tied write IO too.
-
-	* io.c (Init_IO): tie stdin with stdout.  [ruby-core:15107]
-
-Fri Jan 18 00:23:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_free): removed since rb_encoding may be used while
-	  cleanup.
-
-Fri Jan 18 00:17:19 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/euc_cn.c: split from enc/euc_kr.c.
-
-Fri Jan 18 00:03:54 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_init): use default external encoding
-	  if nothing is given.  a patch from sheepman <sheepman AT
-	  sheepman.sakura.ne.jp> in [ruby-dev:33159].
-
-Thu Jan 17 23:56:20 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encdb.h): give output file name to make_encdb.rb.
-
-	* encoding.c (enc_table): simplified.
-
-	* encoding.c (enc_register_at): lazy loading.  [ruby-dev:33013]
-
-	* regenc.h (ENC_DUMMY): added.
-
-	* enc/make_encdb.rb: now emits macros only.
-
-	* enc/iso_2022_jp.h: split from encoding.c.
-
-Thu Jan 17 21:48:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_char_to_option_kcode): fixed typo.
-
-Thu Jan 17 21:01:25 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (Date::Infinity#<=>): didn't work.  A patch from
-	  Dirkjan Bussink <d.bussink AT gmail.com> [ruby-core:15098].
-	  This is a bug obviously.  However it didn't affect the library's
-	  functions.
-
-	* lib/date.rb, lib/date/format.rb: some trivial changes.
-
-Thu Jan 17 13:07:18 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_dump): preserve the encoding of source string
-	  if it is ASCII compatible.  otherwise, add '.force_encoding()'
-	  for ugly work around.  maybe we should implement some other way
-	  to keep non ASCII encoding in dumped string.  [ruby-dev:33142]
-
-Thu Jan 17 10:30:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_fwrite): always flush IO on tty, even without newlines.
-	  [ruby-core:15107]
-
-Wed Jan 16 22:45:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_register_at): make own copy.  [ruby-dev:33136]
-
-Wed Jan 16 18:03:10 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (pipe_open, rb_io_s_popen): clear temporary object to release
-	  and prevent from GC.
-
-Wed Jan 16 17:55:07 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (fix_quo): typo. a patch from Shin-ichiro HARA
-	  <sinara AT blade.nagaokaut.ac.jp> in [ruby-dev:33130]
-
-Wed Jan 16 17:36:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/test_delegate.rb: add new test file for delegate.rb.
-
-Wed Jan 16 16:14:00 2008  Akinori MUSHA  <knu@iDaemons.org>
-
-	* ruby.1: Fix grammar.
-
-Wed Jan 16 15:26:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (sys_fail2): get rid of unlimited alloca.
-
-	* io.c (mode_enc, pipe_open, rb_io_s_popen): ditto.
-
-	* load.c (rb_feature_p): ditto.
-
-	* object.c (rb_cstr_to_dbl): ditto.
-
-	* io.c (mode_enc): fixed uninitialized variable.
-
-Wed Jan 16 12:51:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_str_tmp_new, rb_str_shared_replace):
-	  prototype moved.
-
-Tue Jan 15 23:52:51 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/*: add ARG_UNUSED.
-
-	* enc/koi8_u.c: added.
-
-Tue Jan 15 23:00:08 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/utf_{16,32}{be,le}.c: remove some ARG_UNUSED.  replace struct
-	  OnigEncodingST by OnigEncoding.
-
-Tue Jan 15 22:30:43 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (ENC_REGISTER): use &OnigEncoding*.
-	  (ENCINDEX_UTF_8): renamed from ENCINDEX_UTF8.
-	  (rb_enc_init): use ENC_REGISTER.
-
-	* include/ruby/oniguruma.h (OnigEncodingUTF8, ONIG_ENCODING_UTF8):
-	  removed.
-
-	* enc/*.c: remove use of &encoding_*; use enc argument instead.
-
-Tue Jan 15 18:44:46 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enc/utf_8.c: remove use of ONIG_ENCODING_UTF8 altogether; use
-	  enc argument instead.
-
-Tue Jan 15 18:05:26 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/utf_8.c (ONIG_ENCODING_UTF8): reverted.
-
-Tue Jan 15 18:01:55 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (MKFILES): add dependencies.
-
-Tue Jan 15 18:00:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enc/utf_8.c (OnigEncodingDefine): encoding name should be kept
-	  unchanged.
-
-Tue Jan 15 17:53:05 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/utf_8.c: renamed as IANA name.
-
-	* enc/Makefile.in: ditto.
-
-Tue Jan 15 16:59:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): encoding libraries cannot be loaded until
-	  load path is set.
-
-Tue Jan 15 15:09:28 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/setup.mak: strip out empty lines from CPP output.
-
-Tue Jan 15 14:57:38 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {win,bcc}32/setup.mak (-basic-vars-): expand BASERUBY to full path
-	  to get rid of ./ruby.exe.
-
-	* win32/enc-setup.mak: workaround for Borland make.
-
-Tue Jan 15 14:44:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_locale_charmap): use ASCII-8BIT in miniruby.
-
-Tue Jan 15 13:54:41 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc32,win32}/Makefile.sub (RUNRUBY): need to set archdir when
-	  invoking ruby.
-
-Tue Jan 15 13:43:18 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (us_ascii.o): add dependencies. [ruby-dev:33111]
-
-Tue Jan 15 03:41:42 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (eval): check if backtrace is empty.  [ruby-core:15040]
-
-Tue Jan 15 01:28:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: simplified dummy objects dependencies.
-
-Tue Jan 15 01:19:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (OBJS): moved encoding.o from COMMONOBJS.
-
-	* common.mk (dmyencoding.o): added.  [ruby-dev:33099]
-
-	* configure.in, {win,bcc}32/Makefile.sub (MINIOBJS): added
-	  dmyencoding.o.
-
-	* dmyencoding.c (rb_locale_charmap): returns nil for miniruby.
-
-Tue Jan 15 00:05:50 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (appendline): specifying limit should not generate broken
-	  byte sequence.  strings should be rounded.  [ruby-dev:33088]
-
-Mon Jan 14 23:33:02 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb (Kconv.tolocale): argument is str.
-
-Mon Jan 14 23:31:05 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* configure.in (setup): add -I$(EXTOUT)/$(arch) to MINIRUBY.
-
-	* bootstraptest/runner.rb (main): expand -I directory path.
-
-Mon Jan 14 23:28:10 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/enc-setup.mak (BUILTIN_ENCOBJS): depends on enc/Makefile.in.
-
-Mon Jan 14 22:48:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_char_to_option_kcode): use rb_enc_find_index() instead
-	  of using fixed index value.
-
-	* enc/Makefile.in (encsrcdir): make US-ASCII built-in.
-
-Mon Jan 14 22:25:02 2008  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb: Shorter method name completion.  Same method
-	  used for const missing. do_while and do_until added.  Enumerator
-	  gains all of Array's abilities. Ex:
-	    '123'.m{|i|i*2} #=> "112233"
-	    '123'.pe #=> '123'.perm*' ' #=> "123 132 213 231 312 321"
-	  base on a patch from Darren Smith <darrenks AT ml1.net>.
-
-Mon Jan 14 21:10:02 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enc/us_ascii.c: wrong alias name: ANSI_X3.4-1986.
-
-	* rubytest.rb: add -I#{srcdir} to load encoding DLL.
-
-Mon Jan 14 18:53:58 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c: clear thread structure.
-	  (TODO: survey that child process should clear mutex or not).
-
-	* bootstraptest/test_knownbug.rb, test_thread.rb: move a fixed test.
-
-Mon Jan 14 18:43:38 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/runner.rb: add "flunk" method.
-
-	* bootstraptest/test_knownbug.rb: fix to use flunk.
-
-Mon Jan 14 18:10:59 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.h: remove dangerous assembler sentence.
-
-Mon Jan 14 18:06:37 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_locale_encoding): return US-ASCII when charmap is
-	  nil.
-
-Mon Jan 14 16:12:58 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/shellwords.rb: scape should be an alias to shellescape.  a
-	  patch from Masahiro Kawato <m-kawato AT mwb.biglobe.ne.jp> in
-	  [ruby-dev:33060].
-
-Mon Jan 14 16:09:16 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.1: a patch to describe --encoding.  a patch from Yugui
-	  <yugui AT yugui.sakura.ne.jp> in [ruby-dev:33079].
-
-	* ruby.c: ditto.
-
-Mon Jan 14 13:49:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): initialize error message buffer.
-	  (rb_reg_search): ditto.
-	  (rb_reg_check_preprocess): ditto.
-	  (rb_reg_new_str): ditto.
-	  (rb_enc_reg_new): ditto.
-	  (rb_reg_compile): ditto.
-	  (rb_reg_initialize_m): ditto.
-	  (rb_reg_s_union_m): ditto.
-
-Mon Jan 14 12:33:07 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup*:  Renamespace from SM::SimpleMarkup to
-	  RDoc::Markup.
-
-Mon Jan 14 10:45:45 2008  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* enc/ascii.c: Exchanged order of arguments for one ENC_ALIAS
-
-Mon Jan 14 09:19:07 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/time.rb: do not reference Time directly from the inside of
-	  definitions. [ruby-dev:33059]
-
-Mon Jan 14 05:44:44 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/*.c: add replicas and aliases.
-
-	* enc/make_encdb.h: add duplicate and undefined check.
-
-Mon Jan 14 02:03:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* include/ruby/oniguruma.h: remove ONIG_ENCODING_* and OnigEncoding*
-	  which are not builtin.
-
-	* regenc.{c,h} (onigenc_mb2_code_to_mbclen, onigenc_mb4_code_to_mbclen):
-	  fix prototype.
-
-	* enc/big5.c, enc/euc_kr.c, enc/euc_tw.c, enc/gb18030.c,
-	  enc/koi8_r.c, enc/windows_1251.c: imported from Oniguruma.
-
-Sun Jan 13 22:47:28 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/make_encdb.h: sort encoding names by original name.
-
-	* encoding.c, enc/*.c: define replicas and aliases.
-
-Sun Jan 13 20:24:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c: add documents.
-
-Sun Jan 13 18:41:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): moved initialization from encdb.h.
-
-	* enc/make_encdb.rb (enc_name_list): constified.
-
-	* enc/make_encdb.rb (enc_init_db): moved some functions to encoding.c.
-
-Sun Jan 13 13:53:00 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (load_file): local variable was not initialized when -x flag
-	  is given.
-
-	* ruby.c (load_file): script files should not be affected by locale.
-	  [ruby-dev:33054]
-
-Sun Jan 13 12:01:32 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/generators*: Reorganize RDoc generators.
-
-Sun Jan 13 11:41:11 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (ENCINDEX_EUC_JP, ENCINDEX_SJIS): removed.
-	  (rb_enc_init): EUC-JP and Shift_JIS are not builtin now.
-
-	* enc/Makefile.in: ditto.
-
-	* common.mk: ditto.
-
-	* ruby.c (proc_options): ditto.
-
-	* enc/shift_jis.c, enc/euc_jp.c: fixes for remove from builtin.
-
-Sun Jan 13 10:21:40 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_table): packed all enc_table stuff.
-
-Sun Jan 13 09:58:17 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_init): revert removing SJIS.
-
-	* enc/sjis.c: move to enc/shift_jis.c, to make encoding name equal to
-	  filename for convenience of loading lib.
-
-	* enc/shift_jis.c: moved from enc/sjis.c.
-
-	* common.mk: follows enc/shift_jis.c.
-
-	* enc/Makefile.in: ditto.
-
-Sun Jan 13 09:22:33 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (incs): includes encdb.h.
-
-Sun Jan 13 09:17:29 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (MV): use move instead of ren.  [ruby-Bugs-17019]
-
-Sun Jan 13 01:52:31 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enc/make_encdb.rb: should work on Ruby 1.8.  [ruby-dev:33069]
-
-	* common.mk (encdb.h): pass enc dir from outside to make_encdb.rb.
-
-Sun Jan 13 00:01:07 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/make_encdb.rb: added. search enc/*.c and make encoding database.
-
-	* regenc.h (ENC_REPLICATE, ENC_ALIAS): added for defining replica
-	  encoding and encoding alias.
-
-	* encoding.c (rb_enc_init): move alias definitions to enc/*.c.
-	  (rb_enc_find_index): search original of replica and alias when no
-	  encoding library.
-	  (rb_enc_name_list, rb_enc_aliases_enc_i, rb_enc_aliases_str_i,
-	   rb_enc_aliases, Encoding.name_list, Encoding.aliases): added.
-	  (Init_Encoding): init encdb.
-
-	* enc/ascii.c, enc/us_ascii.c, enc/euc_jp.c, enc/sjis.c:
-	  add replica encoding and encoding alias definition.
-
-	* common.mk (dist-clean-local): add rule for remove encdb.h.
-
-Sat Jan 12 18:27:41 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_define_alloc_func, rb_undef_alloc_func): should
-	  define/undef on a singleton class.  [ruby-core:09959]
-
-Sat Jan 12 12:44:36 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c: rdoc update.
-
-Sat Jan 12 12:01:49 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: tuning for performance.
-
-Sat Jan 12 11:29:45 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bootstraptest/test_proc.rb: fixed wrong expected result.  pointed
-	  out by Kornelius "murphy" Kalnbach <murphy AT rubychan.de> in
-	  [ruby-core:15022].
-
-Sat Jan 12 04:38:38 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ruby.c (process_options): -e'script' is locale encoding by default.
-	  (load_file): ruby script from stdin is locale encoding by default.
-
-Sat Jan 12 04:31:59 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: fix bug: -m was -m0.
-
-Fri Jan 11 23:22:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (string.c): call rb_str_buf_append to update encoding of
-	  str1, even if str2 is empty.
-
-Fri Jan 11 20:20:16 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (proc_mark): needs to mark the receiver too.  a patch from
-	  Chris Heath <chris AT heathens.co.nz> in [ruby-core:14983].
-	  [ruby-core:14885]
-
-Fri Jan 11 18:28:49 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/usage.rb: Removed.
-
-	* lib/getoptlong.rb: Update example to not use lib/rdoc/usage.rb.
-
-Fri Jan 11 18:17:10 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/driver.rb (read_yaml): Follow namespace change
-	  [ruby-core:14964].
-
-Fri Jan 11 16:55:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_append): performance improvement.
-
-Fri Jan 11 12:35:56 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: moved broken syscall checks from process.c etc.
-
-	* defines.h (WORDS_BIGENDIAN): honor __BIG_ENDIAN__ than the result of
-	  configure.
-
-	* lib/rdoc/options.rb (check_diagram): more precise check, darwin
-	  is not Windows but mingw is on it.
-
-Fri Jan 11 09:59:05 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: update to r1.163.
-
-	* ext/nkf/nkf.c: ASCII's canonical name is US-ASCII.
-
-	* ext/nkf/lib/kconv.rb (Kconv.isjis): force_encoding('BINARY').
-
-Fri Jan 11 09:23:31 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (set_base_encoding): must use rb_enc_dummy_p.
-
-Fri Jan 11 06:13:14 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_to_encoding_index, rb_to_encoding): disallow nil.
-	  [ruby-dev:33003]
-
-Fri Jan 11 01:08:01 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread.c (rb_mutex_unlock): proper error message for unlocking
-	  mutex that is not locked.  a patch from Yusuke ENDOH
-	  <mame at tsg.ne.jp> in [ruby-dev:33010].
-
-Thu Jan 10 18:00:41 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* prelude.rb (Mutex::synchronize): capture exception from unlock.
-	  [ruby-dev:32935]
-
-Thu Jan 10 10:15:03 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_encoding_set): IO.pipe("euc-jp", nil) should work as
-	  IO.pipe("euc-jp", nil).  [ruby-dev:33000]
-
-	* io.c (io_encoding_set): handle nil for v1.
-
-Thu Jan 10 02:41:22 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_binmode): should not alter encoding.  [ruby-dev:32918]
-
-	* io.c (io_read_encoding): need not to return ASCII-8BIT for
-	  binary IO.
-
-Wed Jan  9 22:04:17 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* lib/mathn.rb (Prime#each): returns an enumerator if no block
-	  given. [ruby-dev:32815]
-
-Wed Jan  9 22:03:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_replicate): replica of dummy is a dummy.
-
-Wed Jan  9 20:55:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/e2mmap.rb (Exception2MessageMapper::Raise): define fail.
-	  [ruby-dev:32854]
-
-Wed Jan  9 20:35:42 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httprequest.rb: support X-Forwarded-* header fields.
-	  WEBrick::HTTPRequest#{host,port,request_uri} is derived having
-	  regards to X-Forwarded-Proto and X-Forwarded-Host.
-
-	* lib/webrick/httprequest.rb
-	  (WEBrick::HTTPRequest#server_name?): new method.
-	  (WEBrick::HTTPRequest#remote_ip?): new method.
-	  (WEBrick::HTTPRequest#ssl?): new method.
-
-Wed Jan  9 18:24:39 2008  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb (Array#to_s): alias to join.
-
-	* golf_prelude.rb (FalseClass#to_s): return "".
-
-Wed Jan  9 16:59:54 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): fix self appending.
-
-Wed Jan  9 15:54:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): give priority command line encoding option
-	  to RUBYOPT, and enable -E option in RUBYOPT.
-
-	* ruby.c (load_file): deal with encoding option in shebang line if
-	  nothing in command line and RUBYOPT.
-
-Wed Jan  9 14:55:36 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (yycompile0): remove setting parser->enc because it is set
-	  in parser_prepare() by previous change of parser_prepare().
-
-Wed Jan  9 14:52:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_buf_cat, rb_str_buf_append): deal with self
-	  appending.
-
-Wed Jan  9 14:44:57 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_prepare): set parser->enc from lex_input for ripper.
-
-Wed Jan  9 13:45:52 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/server.rb (WEBrick::HTTPServer#start):
-	  :DoNotReverseLookup option had not been performed.
-
-Wed Jan  9 13:03:34 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_enc_cr_str_buf_cat): do not recalculate coderange
-	  value if it's given from outside.
-
-Wed Jan  9 08:42:01 2008  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* enum.c:  Updating the documentation of Enumerable#zip to reflect
-	  the recent changes Matz made to the method.
-
-Wed Jan  9 01:35:10 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enc/Makefile.in (BUILTIN_ENCS): UTF-{16,32}{BE,LE} are not builtin.
-
-Tue Jan  8 23:55:15 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c (rb_enc_init): UTF-{16,32}{BE,LE} are not builtin.
-
-Tue Jan  8 22:33:03 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* encoding.c, Makefile.in, include/ruby/oniguruma.h,
-	  enc/Makefile.in: fix rules for UTF-{16,32}{BE,LE}.
-
-Tue Jan  8 20:02:08 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win{32,ce}/Makefile.sub: merged.
-
-Tue Jan  8 19:48:15 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/driver.rb: Speed up Marshal.load. Fix bug with nested
-	  classes' methods.
-
-Tue Jan  8 19:17:29 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/*: Clean up namespacing of RI's classes.
-
-Tue Jan  8 18:05:35 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* bin/ri, lib/rdoc/ri/*: Replace with Ryan Davis' cached ri.
-
-Tue Jan  8 17:32:07 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_zip): honor length of the receiver, not the
-	  shortest length.  [ruby-core:14738]
-
-	* enum.c (enum_zip): returns array not enumerator for no block
-	  form.  [ruby-core:14738]
-
-	* enumerator.c (next_ii): do not ignore multiple values yielded.
-
-	* array.c (rb_ary_zip): faster version without creating generators.
-
-Tue Jan  8 15:47:43 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/utf{16,32}_{be,le}.c: use &OnigEncodingName(*) instead of
-	  ONIG_ENCODING_*.
-
-Tue Jan  8 15:40:31 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regenc.c (onigenc_strlen_null, onigenc_str_bytelen_null): suppressed
-	  warnings.
-
-	* regenc.h, enc/unicode.c (onigenc_unicode_ctype_code_range): added
-	  encoding argument.
-
-	* enc/utf{16,32}_{be,le}.c: added init functions.
-
-	* enc/utf{16,32}_{be,le}.c: imported from Oniguruma 5.9.1.
-
-Tue Jan  8 15:03:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (str_gsub): avoid appending empty pre-match substr.
-
-Tue Jan  8 13:05:57 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_build_from_ary), iseq.c (iseq_load): fix for format change.
-
-Tue Jan  8 07:56:11 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_buf_append): fix append itself.
-
-Tue Jan  8 01:13:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (STR_ENC_GET): defined.  same as rb_enc_get without
-	  enc_capable.
-	  (coderange_scan): ASCII-8BIT test refined.
-	  (rb_enc_cr_str_buf_cat): new internal function to accumulate
-	  strings with encoding.
-	  (rb_enc_str_buf_cat): use rb_enc_cr_str_buf_cat.
-	  (rb_str_buf_append): ditto
-	  (str_gsub): use rb_str_buf_append.
-	  (rb_str_hash): use ENCODING_GET.
-	  (rb_str_comparable): ditto.
-	  (rb_str_cmp): compare encoding index, not rb_encoding address.
-
-Mon Jan  7 20:37:55 2008  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservlet/cgihandler.rb: external encoding of
-	  tempfiles is set to "ASCII-8BIT".
-
-Mon Jan  7 19:39:50 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/template.rb:  Use ERB instead of custom template language.
-
-	* lib/rdoc/generators/template/html/old_html.rb:  Remove.
-
-	* lib/rdoc/generators/template/*: Convert to ERB.
-
-Mon Jan  7 19:11:30 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (Init_String): sym_match arity spec was wrong.  a patch
-	  from Hiroyuki Iwatsuki <don at na.rim.or.jp> in [ruby-dev:32957].
-
-Mon Jan  7 18:10:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (str_gsub): move rb_enc_get(str) to out of loop.
-
-Mon Jan  7 15:52:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingType): new member
-	  ruby_encoding_index to avoid linear search in rb_enc_to_index.
-
-	* include/ruby/encoding.h (rb_enc_to_index): macro defined to use
-	  ruby_encoding_index.
-
-	* encoding.c (rb_enc_to_index): removed.
-	  (enc_register_at): initialize ruby_encoding_index member.
-
-Mon Jan  7 16:10:35 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/tokenstream.rb:  Namespace under RDoc.
-
-Mon Jan  7 16:06:09 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/dot.rb:  Namespace under RDoc.
-
-	* lib/rdoc/diagram.rb:  Clean up formatting.
-
-Mon Jan  7 15:51:35 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/options.rb:  Convert to OptionParser, clean up -h output,
-	  namespace under RDoc.
-	* lib/rdoc/*:  Namespace RDoc::Options.
-
-Mon Jan  7 15:42:46 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk, Makefile.in, */Makefile.sub (distclean-local): move
-	  removing rule of ext/ripper/y.output from common.mk to Makefiles
-	  that depend on platforms.
-
-Mon Jan  7 13:54:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_preprocess): fix fixed_enc condition.
-
-Mon Jan  7 11:51:49 2008  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/generators/ri_generator.rb:  Merge documentation from the
-	  same class on output.  Fixes bug where documentation could
-	  disappear.
-
-	* lib/rdoc/options.rb:  Fix typo.
-
-	* lib/rdoc/generators/*: Clean up some namespacing and make RDoc
-	  consistent.
-
-Mon Jan  7 11:44:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_internal_get_index): extracted from
-	  rb_enc_get_index.
-	  (rb_enc_internal_set_index): extracted from rb_enc_associate_index
-
-	* include/ruby/encoding.h (ENCODING_SET): work over ENCODING_INLINE_MAX.
-	  (ENCODING_GET): ditto.
-	  (ENCODING_IS_ASCII8BIT): defined.
-	  (ENCODING_CODERANGE_SET): defined.
-
-	* re.c (rb_reg_fixed_encoding_p): use ENCODING_IS_ASCII8BIT.
-
-	* string.c (rb_enc_str_buf_cat): use ENCODING_IS_ASCII8BIT.
-
-	* parse.y (reg_fragment_setenc_gen): use ENCODING_IS_ASCII8BIT.
-
-	* marshal.c (has_ivars): use ENCODING_IS_ASCII8BIT.
-
-Mon Jan  7 02:14:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (coderange_scan): avoid rb_enc_to_index.
-	  (rb_enc_str_buf_cat): ditto.
-	  (str_cat_char): use rb_enc_str_buf_cat.
-	  (rb_str_inspect): ditto.
-
-Mon Jan  7 01:36:49 2008  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (coderange_scan): optimize ASCII-8BIT string.
-	  (rb_enc_str_buf_cat): don't call coderange_scan if possible.
-
-Mon Jan  7 01:05:45 2008  Tanaka Akira  <akr@fsij.org>
-
-	* lib/erb.rb (ERB::Revision): cut off locale dependent string in Date
-	  keyword.
-
-Mon Jan  7 00:48:02 2008  Tanaka Akira  <akr@fsij.org>
-
-	* Date keyword removed to avoid inclusion of locale dependent
-	  string.  [ruby-dev:32940]
-
-Sun Jan  6 21:14:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_initialize_str): forbid raw non ASCII character
-	  for ASCII-8BIT regexp in non ASCII-8BIT script.
-
-Sun Jan  6 18:19:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_enc_str_buf_cat): declared.
-
-	* string.c (coderange_scan): extracted from rb_enc_str_coderange.
-	  (rb_enc_str_coderange): use coderange_scan.
-	  (rb_str_shared_replace): copy encoding and coderange.
-	  (rb_enc_str_buf_cat): new function for linear complexity string
-	  accumulation with encoding.
-	  (rb_str_sub_bang): don't conflict substituted part and replacement.
-	  (str_gsub): use rb_enc_str_buf_cat.
-	  (rb_str_clear): clear coderange.
-
-	* re.c (rb_reg_regsub): use rb_enc_str_buf_cat.
-
-Sun Jan  6 17:55:44 2008  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* lib/securerandom.rb: Add Win32 support.
-
-Sun Jan  6 09:32:58 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb, lib/date/format.rb: introduced some constants
-	  (for internal use) and aliases (minute and second).
-
-	* sample/cal.rb: trivial adjustments.
-
-Sun Jan  6 01:38:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_initialize_str): /\x80/n is not an error even if script
-	  encoding is EUC-JP.
-
-Sun Jan  6 00:48:12 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::DNS#each_address): get A record and then AAAA
-	  record. [ruby-dev:32925]
-
-Sat Jan  5 21:48:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* vm_insnhelper.c (vm_callee_setup_arg): it is not inlinable because
-	  alloca is used.
-
-Sat Jan  5 16:50:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_resize): copy if old data is not empty
-	  [ruby-core:14785]
-
-Sat Jan  5 13:04:24 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): no need for intermediate object.
-
-Sat Jan  5 11:48:19 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (Init_Encoding): alias csWindows31J to Windows-31J.
-	  IE6 accepts csWindows31J but Windows-31J.
-
-Sat Jan  5 02:21:10 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (rb_intern): memorize interned ID for constant
-	  string, using gcc's __builtin_constant_p and statement expression.
-
-Sat Jan  5 02:14:45 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (trnext): should enable backslash escape.
-
-Sat Jan  5 01:50:32 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_eval): move instance_eval and instance_exec to
-	  BasicObject.  [ruby-core:14747]
-
-	* lib/delegate.rb: should preserve new methods in BasicObject.
-
-Sat Jan  5 01:46:29 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): update according to the last API revert.
-
-Sat Jan  5 01:30:30 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h, re.c (rb_reg_new): keep interface same as
-	  1.8.  [ruby-core:14583]
-
-	* include/ruby/intern.h, re.c (rb_reg_new_str): renamed, and defines
-	  HAVE_RB_REG_NEW_STR macro to tell if it is available.
-
-	* include/ruby/encoding.h (rb_enc_reg_new): added.
-
-	* insns.def (toregexp), marshal.c (r_object0): use rb_reg_new_str().
-
-	* re.c (rb_reg_regcomp, rb_reg_s_union): ditto.
-
-Fri Jan  4 23:08:48 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_arg): use converted object.  [ruby-core:14759]
-
-Fri Jan  4 16:24:58 2008  Tanaka Akira  <akr@fsij.org>
-
-	* ext/digest/lib/digest/hmac.rb (Digest::HMAC#initialize): use
-	  String#bytesize to avoid test errors on EUC-JP environment.
-
-Fri Jan  4 14:00:50 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): check string encoding.  Oniguruma doesn't
-	  support invalid encoding.
-
-Fri Jan  4 10:22:25 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_search): avoid inner loop for reverse search.
-
-	* regexec.c: unset USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE
-	  which is turned on since oniguruma 5.9.1.
-
-Fri Jan  4 02:53:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/euc_jp.c: remove eucjp_ prefix.  breakpoint can be specified as
-	  euc_jp.c:mbc_enc_len.  avoid needless conflict by merge.
-
-	* enc/sjis.c: remove sjis_ prefix.
-
-	* enc/utf8.c: remove utf8_ prefix.
-
-	* enc/iso_8859_1.c: remove iso_8859_1_ prefix.
-
-	* enc/iso_8859_2.c: remove iso_8859_2_ prefix.
-
-	* enc/iso_8859_3.c: remove iso_8859_3_ prefix.
-
-	* enc/iso_8859_4.c: remove iso_8859_4_ prefix.
-
-	* enc/iso_8859_5.c: remove iso_8859_5_ prefix.
-
-	* enc/iso_8859_6.c: remove iso_8859_6_ prefix.
-
-	* enc/iso_8859_7.c: remove iso_8859_7_ prefix.
-
-	* enc/iso_8859_8.c: remove iso_8859_8_ prefix.
-
-	* enc/iso_8859_9.c: remove iso_8859_9_ prefix.
-
-	* enc/iso_8859_10.c: remove iso_8859_10_ prefix.
-
-	* enc/iso_8859_11.c: remove iso_8859_11_ prefix.
-
-	* enc/iso_8859_13.c: remove iso_8859_13_ prefix.
-
-	* enc/iso_8859_14.c: remove iso_8859_14_ prefix.
-
-	* enc/iso_8859_15.c: remove iso_8859_15_ prefix.
-
-	* enc/iso_8859_16.c: remove iso_8859_16_ prefix.
-
-Fri Jan  4 02:47:06 2008  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_search): iterate onig_match for reverse mode.
-
-Fri Jan  4 01:20:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32.h: only VC6 needs extern "C++" for math.h.  [ruby-talk:285660]
-
-Fri Jan  4 00:54:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/oniguruma.h: Oniguruma 5.9.1 merged.
-
-Fri Jan  4 00:20:47 2008  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_ungetc): move data in buffer if it is required to store the
-	  argument.
-
-Thu Jan  3 21:56:07 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (st_strcasecmp): declared for STRCASECMP.
-	  (st_strncasecmp): declared for STRNCASECMP.
-
-Thu Jan  3 20:24:48 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_jump.c (rb_f_catch): Restore cfp if caught thrown object.
-
-Thu Jan  3 19:45:57 2008  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_eval.rb, test_knownbug.rb: move a fixed test.
-
-Thu Jan  3 18:39:12 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c: (rb_tolower, rb_toupper): body was exchanged.
-
-Thu Jan  3 17:54:01 2008  Tanaka Akira  <akr@fsij.org>
-
-	* regenc.h (onigenc_ascii_is_code_ctype): put back.
-
-Thu Jan  3 17:33:09 2008  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_isalnum): defined.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-	  (rb_tolower): ditto.
-	  (rb_toupper): ditto.
-
-	* include/ruby/ruby.h: don't include include/ruby/encoding.h.
-	  (rb_isascii): defined.
-	  (rb_isalnum): declared.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-	  (rb_tolower): ditto.
-	  (rb_toupper): ditto.
-	  (ISASCII): simplified.
-	  (ISPRINT): ditto.
-	  (ISSPACE): ditto.
-	  (ISUPPER): ditto.
-	  (ISLOWER): ditto.
-	  (ISALNUM): ditto.
-	  (ISALPHA): ditto.
-	  (ISDIGIT): ditto.
-	  (ISXDIGIT): ditto.
-	  (TOUPPER): ditto.
-	  (TOLOWER): ditto.
-
-	* include/ruby/encoding.h (rb_isascii): removed.
-	  (rb_isalnum): ditto.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-	  (rb_tolower): ditto.
-	  (rb_toupper): ditto.
-
-	* common.mk: dependency updated.
-
-Thu Jan  3 15:10:26 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_isascii): simplified.
-	  (rb_isalnum): call onigenc_ascii_is_code_ctype without indirect call.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-
-	* include/ruby/oniguruma.h (onigenc_ascii_is_code_ctype): declaration
-	  moved from regenc.h.
-
-Thu Jan  3 14:37:17 2008  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (parser_magic_comment): use STRNCASECMP.
-	  (set_file_encoding): ditto.
-
-Thu Jan  3 11:44:37 2008  Tanaka Akira  <akr@fsij.org>
-
-	* time.c: don't mention an obsolete library, ParseDate.
-
-Thu Jan  3 11:28:58 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (fptr_finalize): clear errno first.  [ruby-talk:284492]
-
-Thu Jan  3 05:02:36 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/us_ascii.c: add us_ascii_ prefix for functions to ease
-	  setting breakpoint when debugging.
-
-	* enc/euc_jp.c: add eucjp_ prefix.
-
-	* enc/sjis.c: add sjis_ prefix.
-
-	* enc/iso_8859_1.c: add iso_8859_1_ prefix.
-
-	* enc/iso_8859_2.c: add iso_8859_2_ prefix.
-
-	* enc/iso_8859_3.c: add iso_8859_3_ prefix.
-
-	* enc/iso_8859_4.c: add iso_8859_4_ prefix.
-
-	* enc/iso_8859_5.c: add iso_8859_5_ prefix.
-
-	* enc/iso_8859_6.c: add iso_8859_6_ prefix.
-
-	* enc/iso_8859_7.c: add iso_8859_7_ prefix.
-
-Thu Jan  3 02:44:34 2008  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (conv_digit): use ISDIGIT, ISLOWER and ISUPPER.
-
-Wed Jan  2 23:50:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* util.c (ruby_strtoul): "0x", "+" and "-" is not a valid integer.
-	  end of integer should be just after "0", the beginning, the
-	  beginning respectively.
-
-Wed Jan  2 15:23:15 2008  Tanaka Akira  <akr@fsij.org>
-
-	* util.c (ruby_strtoul): locale independent strtoul is implemented to
-	  avoid "i".to_i(36) cause 0 under tr_TR locale on Debian GNU/Linux
-	  4.0 (Etch).
-	  This is newly implemented, not a copy of missing/strtoul.c.
-
-	* include/ruby/ruby.h (ruby_strtoul): declared.
-	  (STRTOUL): defined to use ruby_strtoul.
-
-	* bignum.c, pack.c, ext/socket/socket.c: use STRTOUL.
-
-	* configure.in (strtoul): don't check.
-
-	* missing/strtoul.c: removed.
-
-	* include/ruby/missing.h (strtoul): removed.
-
-	* common.mk (strtoul.o): removed.
-
-	* LEGAL (missing/strtoul.c): removed.
-
-Wed Jan  2 14:41:08 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk (strcasecmp.o): removed.
-	  (strncasecmp.o): removed.
-
-	* include/ruby/missing.h (strcasecmp): removed.
-	  (strncasecmp): removed.
-
-Wed Jan  2 11:34:57 2008  Tanaka Akira  <akr@fsij.org>
-
-	* missing/strcasecmp.c: removed.  Ruby don't use locale dependent
-	  strcasecmp.
-
-	* missing/strncasecmp.c: ditto.
-
-	* configure.in: don't check strcasecmp and strncasecmp.
-
-	* LEGAL: missing/strcasecmp.c and missing/strncasecmp.c removed.
-
-Wed Jan  2 10:13:54 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* sample/time.rb: use Process.times instead of Time.times.
-
-Wed Jan  2 09:09:53 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* sample/goodfriday.rb: examples for date are enough.  retired.
-
-Wed Jan  2 08:58:54 2008  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* sample/cal.rb: just updated with the newest version.
-
-Wed Jan  2 01:19:31 2008  Tanaka Akira  <akr@fsij.org>
-
-	* enc/depend: dependency updated.
-
-Wed Jan  2 00:14:41 2008  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/{nkf.c, utf8tbl.c}: Update nkf.
-
-	* ext/nkf/nkf.c: fix documents.
-
-	* ext/nkf/lib/kconv.rb: fix documents.
-	  (Kconv.is*): use valid_encoding?.
-	  (Kconv.isjis): defined.
-
-Tue Jan  1 23:17:03 2008  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk: dependency updated.
-
-Tue Jan  1 21:11:33 2008  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_isascii): defined.
-	  (rb_isalnum): ditto.
-	  (rb_isalpha): ditto.
-	  (rb_isblank): ditto.
-	  (rb_iscntrl): ditto.
-	  (rb_isdigit): ditto.
-	  (rb_isgraph): ditto.
-	  (rb_islower): ditto.
-	  (rb_isprint): ditto.
-	  (rb_ispunct): ditto.
-	  (rb_isspace): ditto.
-	  (rb_isupper): ditto.
-	  (rb_isxdigit): ditto.
-	  (rb_tolower): ditto.
-	  (rb_toupper): ditto.
-
-	* include/ruby/st.h (st_strcasecmp): declared.
-	  (st_strncasecmp): ditto.
-
-	* st.c (type_strcasehash): use st_strcasecmp instead of strcasecmp.
-	  (st_strcasecmp): defined.
-	  (st_strncasecmp): ditto.
-
-	* include/ruby/ruby.h: include include/ruby/encoding.h.
-	  (ISASCII): use rb_isascii.
-	  (ISPRINT): use rb_isprint.
-	  (ISSPACE): use rb_isspace.
-	  (ISUPPER): use rb_isupper.
-	  (ISLOWER): use rb_islower.
-	  (ISALNUM): use rb_isalnum.
-	  (ISALPHA): use rb_isalpha.
-	  (ISDIGIT): use rb_isdigit.
-	  (ISXDIGIT): use rb_isxdigit.
-	  (TOUPPER): defined.
-	  (TOLOWER): ditto.
-	  (STRCASECMP): ditto.
-	  (STRNCASECMP): ditto.
-
-	* dir.c, encoding.c, file.c, hash.c, process.c, ruby.c, time.c,
-	  transcode.c, ext/readline/readline.c: use locale insensitive
-	  functions.  [ruby-core:14662]
-
-Tue Jan  1 17:50:47 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_mode_enc): encoding spec is not allowed in binary mode.
-	  [ruby-dev:32913]
-
-Tue Jan  1 14:41:56 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml: 1.9 patch from Sam Ruby mentioned in his blog:
-	  <http://intertwingly.net/blog/2007/12/31/Porting-REXML-to-Ruby-1-9>
-	  [ruby-core:14639]
-
-Tue Jan  1 14:15:04 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_substr): offset movement bug.  a patch from
-	  Vincent Isambart <vincent.isambart at gmail.com> in
-	  [ruby-core:14647].  [ruby-core:14644]
-
-Tue Jan  1 01:29:04 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_to_encoding): raises for non-nil, non-encoding,
-	  non-string object.  [ruby-core:14634]
-
-Tue Jan  1 01:04:06 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): rejects dummy encoding.
-
-Mon Dec 31 23:53:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options, process_options): delays finding encoding
-	  until load_path is set.
-
-Mon Dec 31 23:27:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_resize): embeds if ptr is null.  [ruby-dev:32819]
-
-Mon Dec 31 23:17:22 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpproxy.rb (WEBrick::HTTPProxyServer#proxy_service):
-	  call do_XXX which correspond with request method.
-	  (WEBrick::HTTPProxyServer#do_CONNECT,do_GET,do_POST,do_HEAD): added.
-
-	* test/webrick/test_httpproxy.rb: add test for WEBrick::HTTPProxyServer.
-
-Mon Dec 31 22:53:29 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* thread_pthread.c (native_sleep): timespec tv_sec may overflow on
-	  some platform.  a patch from zunda <zunda616e AT yahoo.co.jp> in
-	  [ruby-dev:32904].
-
-Mon Dec 31 19:35:20 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (IS_7BIT): removed.
-	  (single_byte_optimizable): new function to test optimizationability
-	  using single byte string.
-	  (str_strlen): use single_byte_optimizable instead of
-	  is_ascii_string.
-	  (str_nth): rename argument: asc -> singlebyte.
-	  (str_offset): ditto.
-	  (rb_str_substr): use single_byte_optimizable instead of IS_7BIT.
-	  (rb_str_index): ditto.
-	  (rb_str_rindex): ditto.
-	  (rb_str_splice): ditto.
-	  (rb_str_justify): ditto.
-
-Mon Dec 31 07:39:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* main.c, goruby.c (RUBY_MAIN_INIT): removed.
-
-	* goruby.c (goruby_run_node): run after ruby_init_loadpath() so that
-	  require works, and protect the call.
-
-Mon Dec 31 06:50:38 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: not use -I$(srcdir)/lib with $(MINIRUBY) for cross
-	  compiling.
-
-	* configure.in, {win,bcc}32/Makefile.sub (MINIRUBY): -I$(srcdir)/lib
-	  moved.
-
-Mon Dec 31 06:08:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_sprintf, rb_enc_vsprintf): prototyped.
-
-	* sprintf.c (rb_enc_sprintf, rb_enc_vsprintf): new functions to format
-	  arguments with encoding.
-
-Sun Dec 30 23:48:00 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (String#/): define / as split, as association of
-	  Array#*.
-
-Sun Dec 30 23:19:06 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb (@@golf_hash): for performance improvement.
-
-Sun Dec 30 22:44:50 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (_valid_time?): I'm not sure to recommend such an
-	  expression.  but anyway it is acceptable now.  [ruby-core:14580]
-
-Sun Dec 30 21:54:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (program, yycompile0): too early to drop lex_lastline in
-	  rules.
-
-Sun Dec 30 19:23:23 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bootstraptest/test_knownbug.rb: support DOSISH.
-
-Sun Dec 30 17:43:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): registered rb_encoding differs from
-	  ONIG_ENCODINGs.
-
-Sun Dec 30 13:56:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (program): clear input strings after all process.
-
-	* parse.y (parser_nextc, parser_yylex): should not drop lex_lastline
-	  while lex_p is valid.  [ruby-dev:32896]
-
-Sun Dec 30 10:54:49 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* configure.in: rm largefile.h.
-
-	* common.mk: clean golf, conf*, preludes, and so on.
-
-	* enc/depend: silent and ignore error for rm.
-
-	* enc/Makefile.in: should define prefix and exec_prefix.
-
-Sun Dec 30 06:31:11 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (Init_encoding): register Windows-31J and its alias.
-	  [ruby-dev:32843]
-
-	* ruby.c (proc_options): -Ks options means Windows-31J, not Shift_JIS.
-
-Sun Dec 30 06:27:38 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (depend_rules): need to convert `/' to `\' for windows
-	  native commands.
-
-Sun Dec 30 01:43:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/Makefile.in (DLDFLAGS): like as extensions.  [ruby-core:14567]
-
-Sat Dec 29 23:48:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fflush): don't retry when wbuf modified by other threads.
-
-Sat Dec 29 22:44:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): returns the given string itself if nothing
-	  changed.
-
-	* string.c (rb_str_sub_bang): keeps code-range as possible.
-
-	* string.c (str_gsub): adjusts code-range.  [ruby-core:14566]
-
-Sat Dec 29 21:54:37 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (clean, distclean, realclean): should include clean-enc
-	  and others.  [ruby-dev:32887]
-
-Sat Dec 29 13:29:29 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/test_knownbug.rb: add a test reported by
-	  Kazuhiro NISHIYAMA.  [ruby-dev:32819].
-	  add a test reported by Frederick Cheung.  [ruby-core:14556].
-
-	* test/ruby/test_m17n.rb (test_gsub): add a test reported by
-	  Sam Ruby.  [ruby-core:14566]
-
-Sat Dec 29 04:46:58 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/test/unit/assertions.rb (Test::Unit::Assertions#assert_throws):
-	  throw won't raise NameError nor ThreadError but ArgumentError on 1.9.
-	  (Test::Unit::Assertions#assert_not_throws): ditto.
-
-	* test/testunit/test_assertions.rb: add assertions for throwing some
-	  objects other than Symbol.
-
-Sat Dec 29 03:10:12 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_unread): fix typo.
-
-Sat Dec 29 02:18:45 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* io.c (io_unread): adhoc workaround for non-binary mode of some DOSish
-	  platforms. this is not perfect and safety, but works with most cases.
-
-Fri Dec 28 23:53:18 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ext/strscan/strscan.c (str_new): new function for allocate an string
-	  with encoding propagation.
-	  (extract_range): use str_new.
-	  (extract_beg_len): ditto.
-	  (strscan_peek): ditto.
-	  (strscan_rest): ditto.
-
-Fri Dec 28 20:18:42 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* golf_prelude.rb (Object.say): derived from Perl 5.10.
-
-Fri Dec 28 19:39:34 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (rb_locale_encoding): should check return value from
-	  rb_locale_charmap().
-
-	* ruby.c (locale_encoding): removed.
-
-	* ruby.c (process_options): use rb_locale_encoding() instead of
-	  locale_encoding().
-
-	* ext/readline/readline.c (readline_readline): use locale encoding
-	  instead of input IO's encoding. [ruby-dev:32872]
-
-Fri Dec 28 19:29:07 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_readline, readline_s_set_input):
-	  use mReadline directly because self is not always same.
-
-Fri Dec 28 19:11:28 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_locale_encoding): defined.
-
-	* include/ruby/encoding.h (rb_locale_encoding): declared.
-
-Fri Dec 28 18:45:29 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/readline/readline.c (readline_readline): set encoding to result.
-
-	* ext/readline/readline.c (readline_s_set_input, Init_readline): save
-	  input IO to hidden instance variable.
-
-Fri Dec 28 01:55:04 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c (transcode_dispatch): reverted some of the changes
-	  in r14746.
-
-	* transcode.c, enc/trans/single_byte.c: Added conversions to/from
-	  US-ASCII and ASCII-8BIT (using data tables).
-
-	* enc/trans/single_byte.c: Some spacing/ordering changes due to
-	  automatic data file generation.
-
-	* transcode_data.h, transcode.c: Preliminary code for using
-	  micro-conversion functions.
-
-	* test/ruby/test_transcode.rb: Added some tests for US-ASCII and
-	  ASCII-8BIT conversions.
-
-Fri Dec 28 17:33:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (make_time_t): verify mktime and timegm result.
-
-Fri Dec 28 16:36:33 2007  NARUSE, Yui  <naruse@airemix.com>
-
-	* lib/resolv.rb (Resolv::DNS#each_address): now returns IPv6 address.
-
-Fri Dec 28 16:10:00 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/dot/dot.rb: Move to lib/rdoc/dot.rb. Fix namespacing.
-
-	* lib/rdoc/diagram.rb: Update for 1.9.
-
-Fri Dec 28 15:38:29 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/markup/sample/: Move to sample/rdoc/markup directory.
-
-Fri Dec 28 15:15:12 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/irb/completion.rb: Remove garbage ("X=1").
-
-Fri Dec 28 15:12:05 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc, test/rdoc: Move RDoc tests out of lib/.
-
-Fri Dec 28 15:10:47 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (set_base_encoding, enc_base_encoding): renamed
-	  based_encoding as base_encoding.
-
-Fri Dec 28 13:57:49 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (Integer#each): use alias simply.
-
-Fri Dec 28 13:45:21 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* golf_prelude.rb (Object.const_missing): No need to delegate to
-	  superclass.  Just raise a NameError when none matches.
-
-Fri Dec 28 13:18:47 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, test/rss/test_version.rb: 0.2.2 -> 0.2.3.
-
-	* lib/rss/parser.rb, test/rss/test_parser.rb: supported "-" in tag name.
-	  Reported by Ray Chen. Thanks.
-
-Fri Dec 28 13:07:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (os_obj_of): returns an enumerator if no block given.  based on
-	  a patch from Yugui <yugui AT yugui.sakura.ne.jp>.  [ruby-dev:32828]
-
-Fri Dec 28 11:46:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/ytab.sed: skip yydestruct hack unless yymsg exists, for bison
-	  1.8 series.  [ruby-dev:32825]
-
-Fri Dec 28 11:39:02 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (Object.quine): need to join because SCRIPT_LINES__[]
-	  returns an array of lines.
-
-Fri Dec 28 11:16:53 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (Object.quine): get the script itself.
-
-Fri Dec 28 10:06:54 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* golf_prelude.rb (Object.const_missing): Auto-complete constants.
-
-Fri Dec 28 01:55:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_dispatch): allows transcoding from/to
-	  ASCII-8BIT.
-
-Fri Dec 28 01:47:25 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (Integer): Integer is now enumerable on goruby.
-
-Fri Dec 28 01:27:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/rdoc/rdoc.rb (parse_files): don't depend on the default external
-	  encoding.
-
-Fri Dec 28 00:01:57 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (golf_prelude.c): use MINIRUBY instead of BASERUBY because
-	  tool/compile_prelude.rb requires rbconfig.rb.
-
-Thu Dec 27 23:56:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* mkconfig.rb: should not use the libraries under the source directory
-	  at cross compiling.
-
-Thu Dec 27 23:43:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* cygwin/GNUmakefile.in (EXTOBJS): uses ruby.rc always for other than
-	  rubyw.exe.
-
-Thu Dec 27 22:31:37 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rubygems/commands/update_command.rb (do_rubygems_update): use
-	  portable and safely ENV operation. reported in
-	  <http://slashdot.jp/developers/comments.pl?sid=384937&cid=1273085>.
-
-Thu Dec 27 21:47:04 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* mkconfig.rb (prefix): archdir is "1.9.0", not "1.9". reported in
-	  <http://slashdot.jp/developers/comments.pl?sid=384937&cid=1273085>.
-
-Thu Dec 27 17:57:30 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y, transcode_data.h, transcode.c, lib/weakref.rb,
-	  lib/irb/ruby-lex.rb, lib/irb/lc/error.rb, enc/trans/japanese.c:
-	  change "illegal" to "invalid" in a context which doesn't against
-	  a law.
-
-Thu Dec 27 16:37:06 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_s_union): show encodings in error message.
-
-Thu Dec 27 15:25:16 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_codelen): show codepoint in error message.
-
-	* include/ruby/encoding.h (rb_enc_codelen): comment it returns
-	  positive integer.
-
-	* string.c (rb_str_concat): rb_enc_codelen doesn't return 0.
-
-Thu Dec 27 15:18:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_codelen): error message refined.
-
-Thu Dec 27 15:11:27 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_check): show encodings in error message.
-
-Thu Dec 27 15:02:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_casecmp): fixed using a wrong variable.
-	  [ruby-list:44402]
-
-Thu Dec 27 14:34:38 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fflush): checks wbuf modification by other threads.
-	  not perfect.  it need locks.
-
-Thu Dec 27 10:44:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/socket/socket.c: a patch to support IRIX from Andrew
-	  Thompson <andrew@hijacked.us> in [ruby-core:14447].
-
-Thu Dec 27 02:25:45 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (create_tmpsrc): retry to create file if Errno::EACCES
-	  occurs. this is a workaround for mswin32.
-
-Wed Dec 26 22:47:31 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::DNS::Name.==): fix for other is array of
-	  Resolv::DNS::Label::Str.
-
-	* lib/resolv.rb (Resolv::DNS::MessageEncoder#put_label): String#string
-	  is not defined, so replace to_s.
-
-	* lib/resolv.rb (Resolv::IPv6#to_name): ip6.int is obsoleted by
-	  ip6.arpa.
-
-Wed Dec 26 21:27:02 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (_xmlschema): some improvements.
-
-	* lib/date/format.rb (_parse): a new hint compfunc. [experimental]
-
-Wed Dec 26 17:31:08 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (io_fflush): check closed fptr after rb_write_internal to avoid
-	  SEGV on MacOS X.
-
-Wed Dec 26 16:10:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (Init_String): defines chars method.
-
-Wed Dec 26 14:38:43 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* instruby.rb: install goruby if exists.
-
-Wed Dec 26 13:55:02 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb:  Cleaned up some code with Ruby 1.9 idioms.
-
-Wed Dec 26 13:29:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (tmpbuf): use rb_str_tmp_new().
-
-Wed Dec 26 00:57:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/json/ext/generator/generator.c (Init_generator): requires
-	  json/common.rb for GeneratorError, when static linked.  a patch from
-	  Kenta Murata <muraken AT gmail.com> in [ruby-dev:32789].
-
-Tue Dec 25 23:33:55 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* development version 1.9.0 released.
-
-Tue Dec 25 23:25:29 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/node.rb (REXML::Node::indent): should initialize rv
-	  variable.  a patch from Tadayoshi Funaba <tadf AT dotrb.org> in
-	  [ruby-dev:32783].
-
-Tue Dec 25 23:16:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): encoding option in shebang and RUBYOPT did not
-	  work, do not store alloca()ed string in a parent scope struct.
-
-Tue Dec 25 22:56:52 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (config.status): keep this file.
-
-Tue Dec 25 22:55:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (TIMEZONE_VOID): typo.
-
-Tue Dec 25 22:45:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns2vm.rb: add encoding option to shebang.
-
-Tue Dec 25 22:13:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/pending.rb: add pending issue.
-
-Tue Dec 25 22:12:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c: remove Thread.critical(=).
-
-Tue Dec 25 21:44:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: add version number.
-
-Tue Dec 25 21:32:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix stack consistency error
-	  (break is compiled to throw instead of jump insn).
-	  these problems are reported by Yusuke ENDOH <mame AT tsg.ne.jp>
-
-	* bootstraptest/test_knownbug.rb, test_syntax.rb: move fixed test.
-
-Tue Dec 25 21:32:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (struct parser_params): make parser_ruby_sourcefile common
-	  field.  it is used by node_newnode.
-	  new field parser_ruby_sourcefile_string for ripper.
-	  (parser_initialize): initialize parser_ruby_sourcefile in ripper.
-	  (ripper_initialize): initialize parser_ruby_sourcefile_string.
-
-Tue Dec 25 21:26:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.c): depends on tool/ytab.sed.
-
-	* tool/ytab.sed: hack for bison 2.1.
-
-Tue Dec 25 20:24:58 2007  Technorama Ltd.  <oss-ruby@technorama.net>
-
-	* ext/openssl/ossl_ssl.c: Only show a warning if the default
-	  DH callback is actually used.
-
-	* ext/openssl/ossl_rand.c: New method: random_add().
-
-Tue Dec 25 20:24:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/make-snapshot: argument check, and cleanup exported directory.
-
-Tue Dec 25 20:07:13 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* tool/make-snapshot: more portable.
-
-Tue Dec 25 19:01:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.h (rb_enc_mbc_to_codepoint): wrapper for
-	  ONIGENC_MBC_TO_CODE().
-
-	* string.c (rb_str_succ): deal with invalid sequence as binary.
-
-Tue Dec 25 18:40:46 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c: all methods need $SAFE < 1.
-
-	 vm.c: comment out debug functions.
-
-Tue Dec 25 18:37:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (appendline): move RS comparison to rb_io_getline_1().
-
-Tue Dec 25 18:27:51 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_each_line): don't call rb_enc_codepoint with empty
-	  string.
-
-Tue Dec 25 18:06:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_inspect): don't call rb_enc_codepoint with empty
-	  string.  fix '#'.inspect.
-
-	* encoding.c (rb_enc_codepoint): raise on empty string.
-
-Tue Dec 25 17:48:28 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm.c (rb_frame_method_id_and_class): new function to get the
-	  method id and class of the current frame.
-
-Tue Dec 25 17:32:04 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/mkmf.rb (create_makefile): Add a missing dependency on the
-	  target directory for each .rb file.  This will hopefully fix
-	  parallel make (-jN).  Tested on FreeBSD.
-
-Tue Dec 25 16:51:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/japanese.c (rb_{from,to}_{SHIFT_JIS,EUC_JP}): inversed
-	  from_encoding and to_encoding.
-
-Tue Dec 25 16:41:57 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* golf_prelude.rb (h): add new method for all golfers.
-
-Tue Dec 25 16:37:12 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/japanese.c (rb_to_EUC_JP): fixed typo.
-
-Tue Dec 25 16:34:58 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/depend: add dependencies. [ruby-dev:32760]
-
-Tue Dec 25 16:26:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h, thread.c: rename is_ruby_native_thread() to
-	  ruby_native_thread_p().
-
-	* ext/tk/tcltklib.c: apply it.
-
-Tue Dec 25 16:15:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (clean-enc): clean encoding objects.
-
-Tue Dec 25 16:04:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk, goruby.c, golf_prelude.rb: for golfers.
-
-	* main.c (main): hook for embedding applications.
-
-	* tool/compile_prelude.rb: can change initialize function name.
-
-Tue Dec 25 15:59:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_register): do not use based_encoding to check if
-	  dummy encoding.
-
-Tue Dec 25 15:55:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ): fix for string with non-alphanumeric chars.
-
-Tue Dec 25 15:42:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_external_encoding): should return nil for
-	  pass-through write IO.  [ruby-dev:32740]
-
-Tue Dec 25 15:24:57 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (appendline): initialize rslen to 1 if rsptr is 0.
-	  rslen is the length of the delimiter.
-	  if only delim is given, it should be 1.
-	  [ruby-dev:32746]
-
-Tue Dec 25 15:21:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_dispatch): fix for multistep transcode.
-
-Tue Dec 25 15:07:51 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enc/trans/single_byte.c (Init_single_byte): renamed.
-
-Tue Dec 25 15:00:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_yield): when multiple values yielded from #each
-	  pack them into an array.  [ruby-dev:32708]
-
-	* enum.c: all method but all?, any?, one? and none? passed packed
-	  multiple values to the block.
-
-	* enum.c (collect_all): should pack all values.  [ruby-core:14410]
-
-Tue Dec 25 14:57:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (COMMONOBJS): transcode_data_*.c moved under enc/trans.
-
-	* transcode_data.h (rb_transcoding, rb_transcoder): prefixed.
-
-	* transcode.c (rb_register_transcoder, rb_declare_transcoder): split
-	  declaration and registration.  [ruby-dev:32704]
-
-	* transcode.c (transcode_dispatch): autoload pre-declared transcoder.
-
-	* transcode.c (str_transcode): use rb_define_dummy_encoding().
-
-	* transcode.c (Init_transcode): initialize transcoder tables.
-
-	* enc/trans/single_byte.c, enc/trans/japanese.c: moved from top.
-
-Tue Dec 25 14:20:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/mkmf.rb (map_dir): should generate path including $top_srcdir.
-
-Tue Dec 25 14:09:16 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb:  Fixed test failures caused by changes to Ruby.
-
-	* test/csv/tc_serialization, test/csv/tc_csv_parsing, test/csv/tc_features:
-	  Fixed test failures caused by changes to Ruby.
-
-Tue Dec 25 14:11:57 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_encoding_set): missing return type.
-
-Tue Dec 25 14:03:48 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* test/rinda/test_rinda.rb (MockClock#{_forward, forward, sleep}):
-	  Change default value of n as @reso from nil.  If default value is
-	  nil, n.+ is not defined.
-
-Tue Dec 25 13:54:01 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io_m17n.rb (test_pipe): fixed.
-	  [ruby-dev:32743]
-
-Tue Dec 25 13:44:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_wait_fd_rw): should check EBADF on select().
-
-Tue Dec 25 13:30:03 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c, thread_pthread.h, thread_win32.c,
-	  thread_win32.c: make some functions static functions.
-	  a patch from Tadashi Saito <shiba AT mail2.accsnet.ne.jp>
-	  in [ruby-core:14407]
-
-Tue Dec 25 13:23:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_io_m17n.rb (test_write_noenc): don't mix text and
-	  binary mode.  [ruby-dev:32743]
-
-Tue Dec 25 13:13:09 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* README.EXT.ja, dir.c, eval.c, eval_intern.h, lex.c.src,
-	  lex.c.blt, keywords, load.c, thread.c: more ANSI'ize.
-	  a patch from Tadashi Saito <shiba AT mail2.accsnet.ne.jp>
-	  in [ruby-dev:32725]
-
-Tue Dec 25 13:07:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h, thread.c, cont.c: add RUBY_VM_SET_INTERRUPT(),
-	  RUBY_VM_SET_TIMER_INTERRUPT(), RUBY_VM_INTERRUPTED().
-
-	* thread.c, thread_pthread.c, thread_win32.c: fix to ignore time slice
-	  event until sleep.
-
-	* bootstraptest/test_thread.rb: add a test for time limited join test.
-
-Tue Dec 25 12:42:59 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (Init_VM): remove unused code.
-	  [ruby-dev:32732]
-
-Tue Dec 25 12:32:32 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c: Moving a static counter from inside register_transcoder()
-	  and register_functional_transcoder() to outside the functions, renaming
-	  from n to next_transcoder_position. Fixes 3) in [ruby-dev:32715].
-
-Tue Dec 25 12:22:17 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* sample/from.rb: follow Ruby 1.9 libraries.
-
-Tue Dec 25 12:21:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (method_inspect): preserve encoding of the method name.
-
-Tue Dec 25 12:07:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (BASERUBY): delayed error until BASERUBY is used.
-
-Tue Dec 25 11:48:35 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/README: removed obsoleted files: dbmtest.rb,
-	  getopts.test, mrshtest.rb, regx.rb.
-
-Tue Dec 25 11:45:34 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb:  Import the FasterCSV source as the new CSV class.
-
-	* test/csv/*:  Added all applicable tests from FasterCSV.
-
-Tue Dec 25 11:33:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* error.c (report_bug): uses ruby_description.
-
-Tue Dec 25 11:20:38 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix stack consistency error.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>  [ruby-dev:32720]
-
-	* bootstraptest/test_syntax.rb: add 2 tests for above.
-
-Tue Dec 25 11:14:20 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c, vm_core.h: comment out unused fields.
-
-Tue Dec 25 11:02:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: check frame is FINAL when creating env.
-	  [ruby-core:14395]
-
-	* bootstraptest/test_block.rb: add a test for above.
-
-Tue Dec 25 09:12:13 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/:  Enable RDoc debugging only with $DEBUG_RDOC.
-
-Tue Dec 25 08:37:43 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/csv.rb, test/csv/test_csv.rb:  Removed in preparation for
-	  FasterCSV code import.
-
-Tue Dec 25 08:27:43 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems.rb:  Fix test failures.
-
-	* test/rubygems/test_gem.rb:  Fix test failure.
-
-Tue Dec 25 06:23:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb, test_literal.rb: move fixed test.
-
-Tue Dec 25 06:19:04 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* sample/biorhythm.rb: follow Ruby 1.9 libraries.
-
-Tue Dec 25 06:15:01 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: add dummy toplevel frame.
-
-Tue Dec 25 05:44:56 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/http.rb:  Fix uninitialized variable warning.
-	  [ruby-talk:284582]
-
-	* lib/irb/output-method.rb:  Remove unused #foo method.
-	  [ruby-talk:284582]
-
-Tue Dec 25 05:24:12 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile): clear local table if node == 0.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>  [ruby-dev:32530]
-
-	* vm.c: clear VM stack.
-
-Tue Dec 25 04:23:32 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (rb_id2str): fill klass of returned string as rb_cString.
-	  some strings are allocated before rb_cString is created.
-	  This prevents a "called on terminated object" error by
-	  ObjectSpace.each_object(Module) {|m| p m.name }.
-
-Tue Dec 25 03:51:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix stack consistency bug.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>
-
-Tue Dec 25 03:19:47 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
-
-	* tool/make-snapshot: must create configure and lex.c.
-
-Tue Dec 25 03:16:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_pipe): now takes up to two arguments.  allow its
-	  external/internal encoding by Encoding objects.
-
-	* io.c (rb_io_set_encoding): new method to set encoding of the IO.
-
-	* io.c (argf_set_encoding): ditto.
-
-Tue Dec 25 03:08:53 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* pack.c (pack_pack): use NUM2LONG instead of NUM2INT.
-
-	* numeric.c (fix_lshift, fix_aref): use SIZEOF_LONG instead of
-	  SIZEOF_VALUE.
-
-	* bignum.c (big2ulong, rb_big_aref): ditto.
-
-Tue Dec 25 02:55:26 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/rexml/element.rb (REXML::Elements#each): yield in each
-	  should be called with one parameter. [ruby-dev:32708]
-
-Tue Dec 25 02:15:39 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): add a "pop" insn after break
-	  to fix stack consistency error.  [ruby-core:14385]
-
-	* bootstraptest/test_syntax.rb: add tests for above.
-
-	* bootstraptest/test_knownbug.rb: remove fixed bug.
-
-Tue Dec 25 01:54:36 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* id.c (Init_id): remove several unused symbols. [ruby-core:14362]
-
-	* compile.c (iseq_specialized_instruction): do not use
-	  VM_CALL_SEND_BANG flag any longer.
-
-Tue Dec 25 01:42:41 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/rdoc/rdoc.rb (parse_files): interpret coding cookie.
-
-Tue Dec 25 01:38:04 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (method_name): preserve Symbol's encoding.
-
-	* numeric.c (fix_id2name): ditto.
-
-Tue Dec 25 01:19:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/encoding.h (rb_enc_left_char_head): new utility macro.
-
-	* include/ruby/encoding.h (rb_enc_right_char_head): ditto.
-
-	* io.c (appendline): does multibyte RS search in the function.
-
-	* io.c (prepare_getline_args): RS may be nil.
-
-	* io.c (rb_io_getc): should process character based on external
-	  encoding, when transcoding required.
-
-Tue Dec 25 01:07:57 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/irb/output-method.rb: translate a comment to English to
-	  avoid mix of EUC-JP comment and UTF-8 Date keyword.
-	  svn substitute Date keyword with UTF-8 weekday on UTF-8 locale.
-
-Tue Dec 25 00:27:28 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httpservley/cgihandler.rb
-	  (WEBrick::HTTPServlet::CGIHandler#do_GET): m17nized.
-
-Mon Dec 24 23:55:29 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/cgi.rb (CGI::escape): m17nized.
-	  (CGI::unescape): ditto.
-	  (CGI::escapeHTML): ditto.
-	  (CGI::unescapeHTML): ditto.
-
-Mon Dec 24 23:32:24 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* transcode_data_japanese.c (select_iso_2022_mode): '\e' is not valid.
-
-Mon Dec 24 23:13:09 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/rdoc/diagram.rb (RDoc::Diagram#initialize): use fileuitls
-	  instead of ftools.
-
-Mon Dec 24 23:04:57 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/ftools.rb: removed obsoleted lib.  use fileutils instead (by eban).
-
-	* lib/rdoc/rdoc.rb, lib/rdoc/generators/*, lib/rake.rb: let it use
-	  fileutils instead of ftools.
-
-	* lib/shell/command-processor.rb: removed unused references to ftools.
-
-	* lib/parsedate.rb: removed.  see [ruby-core:12535], [ruby-dev:31969].
-
-	* lib/README: updated.
-
-Mon Dec 24 23:01:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI::Buffer): use Meta ===.  [ruby-core:14295]
-
-Mon Dec 24 22:46:42 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* transcode.c: register_functional_transcoder() added.
-	  (init_transcoder_table(: register ISO-2022-JP.
-	  (str_transcode): add preprocessor and postprocessor.
-
-	* transcode_data_japanese.c: add ISO-2022-JP support.
-
-	* transcode_data.h: moved transcoder and transcoding definition from
-	  transcode.c.
-
-Mon Dec 24 20:29:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/io/nonblock/test_flush.rb: fix test for 1.9.
-
-Mon Dec 24 20:23:44 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/rinda/test_rinda.rb: revert last commit because this test seems
-	  to have timing problem to halt all tests.
-
-Mon Dec 24 20:18:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/rinda/test_rinda.rb: enable rinda test.
-
-Mon Dec 24 20:16:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* instruby.rb: fix rdoc install dir.
-
-Mon Dec 24 18:37:32 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_prepare_re): show regexp encoding in the error message.
-
-Mon Dec 24 18:23:32 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (rb_exc_raise): ANSI style.
-	  (rb_exc_fatal): ditto.
-	  (rb_raise_jump): ditto.
-	  (rb_jump_tag): ditto.
-	  (rb_block_given_p): ditto.
-
-	* variable.c (original_module): ditto.
-
-Mon Dec 24 18:05:09 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (Init_ISeq): disable ISeq.load() because there is no verifier.
-
-	* iseq.c, proc.c: add ISeq.disasm(method).
-
-Mon Dec 24 18:06:03 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval_method.c (Init_eval_method): extracted from Init_eval
-	  for rdoc to find rb_mod_remove_method, rb_mod_undef_method and
-	  rb_mod_alias_method.
-
-	* eval.c (Init_eval): call Init_eval_method.
-
-Mon Dec 24 17:59:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (load_lock): reverted.
-
-	* thread.c (rb_barrier_wait): check for recursive wait.
-
-Mon Dec 24 17:50:54 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (function_call_may_return_twice_jmp_buf): removed.
-	  (function_call_may_return_twice_false): removed.
-	  [ruby-core:14335]
-
-Mon Dec 24 17:40:57 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (node_name.inc, miniprelude.c, prelude.c): nmake cannot
-	  handle target vpath in other than implicit rules.
-
-Mon Dec 24 17:20:34 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* lib/{mailread.rb,getopts.rb,parsearg.rb}: removed.
-	  see [ruby-core:12535], [ruby-dev:31969].
-
-Mon Dec 24 17:12:57 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h, random.c, array.c:
-	  change exported name.
-	  genrand_int32 -> rb_genrand_int32.
-	  genrand_real -> rb_genrand_real.
-	  [ruby-core:14335]
-
-Mon Dec 24 17:06:37 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
-
-	* {lib,test}/{soap,wsdl,xsd}: removed soap4r along to the discussion
-	  at ruby-core and ruby-dev.  see [ruby-core:12535], [ruby-dev:31969].
-
-Mon Dec 24 17:06:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_feature_p): returns loading path name too.
-
-	* load.c (search_required): returns path too if feature is being
-	  loaded.  [ruby-dev:32048]  [TODO: refactoring]
-
-Mon Dec 24 16:29:12 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* sample/openssl: reviewed and remove dependency on getopts.rb.
-
-Mon Dec 24 16:18:57 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* mkconfig.rb: add teeny to CONFIG['ruby_version'].
-
-Mon Dec 24 15:55:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/compile.rb, getrev.rb, runruby.rb: remove unused tools.
-
-Mon Dec 24 15:42:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, cygwin/GNUmakefile.in, */Makefile.sub,
-	  djgpp/config.hin.: version dependent directory names now contain
-	  teeny.
-
-Mon Dec 24 15:29:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/serb.rb: removed.
-
-Mon Dec 24 13:55:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_proc_new), vm.c (invoke_block): removed u3.state magic.
-	  [ruby-core:14310]
-
-	* test/ruby/test_symbol.rb (test_to_proc): a test from Frederick
-	  Cheung <frederick.cheung AT gmail.com>.
-
-Mon Dec 24 13:43:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (rb_thread_atfork): should not leave living_threads
-	  referring freed table while allocating new table.
-
-Mon Dec 24 12:49:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, configure.in, lib/mkmf.rb, */Makefile.sub: specify
-	  compiled output file name explicitly.
-
-	* enc/Makefile.in, enc/depend: now makes compiler to put generated
-	  files under directories corresponding to the each source.
-	  enc/trans supported.
-
-	* enc/make_encmake.rb: evaluates depend file before Makefile.in so
-	  that the former can influence to CONFIG.
-
-Mon Dec 24 12:35:03 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win{32,ce}/Makefile.sub (MFLAGS): defaulted to -l.
-
-Mon Dec 24 12:08:10 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* /, ext/:  Add svn:ignore for OS X Xcode 3's conftest.dSYM
-	  directories.
-
-Mon Dec 24 11:56:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk: should not pass MAKEFLAGS to recursive make.
-	  + normal make: MFLAGS are set and command line options and macros
-	    are all passed silently.
-	  + GNU make: ditto, and all options and macros in MAKEFLAGS are in
-	    effect.
-	  + nmake: MFLAGS is not set and MAKEFLAGS has only options without
-	    hyphen, no macros exist in any variables.
-	  + Borland make: ditto, and command line macros cannot override
-	    macros in makefile, so passing them is vain.
-
-	* {bcc32,win{32,ce}}/Makefile.sub (SET_MAKE): set MFLAGS which is not
-	  set by default, to get rid of chaotic situation of MFLAGS/MAKEFLAGS.
-
-Mon Dec 24 11:32:44 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): fixed to keep transitivity.
-	  [ruby-dev:32693]
-
-Mon Dec 24 11:20:31 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/ri/ri_options.rb:  Fix display of GEMDIRS, make command
-	  examples match ri's name.
-
-	* lib/rdoc/ri/ri_paths.rb:  Only allow latest ri dirs in ri output.
-
-Mon Dec 24 10:49:04 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/uri/mailto.rb, lib/uri/common.rb:  Fix Regexp warnings.  Patch
-	  #16524 from Kornelius Kalnbach, [ruby-core:14302].
-
-Mon Dec 24 10:37:38 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb:  Remove methods from Gem, not QuickLoader, to fix
-	  warnings.
-
-Mon Dec 24 09:45:45 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c, transcode_data_one_byte.c, transcode_data_japanese.c:
-	  added rb_ prefix to external data symbols.
-
-Mon Dec 24 05:32:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_inject): updated documentation.  a patch from Keita
-	  Yamaguchi <keita.yamaguchi AT gmail.com> in [ruby-dev:32686].
-
-	* README.EXT: updated.  a patch from Tadashi Saito
-	  <shiba AT mail2.accsnet.ne.jp> in [ruby-core:14328].
-
-	* array.c (rb_ary_at): updated documentation. a patch from Tadashi
-	  Saito <shiba AT mail2.accsnet.ne.jp> in [ruby-core:14330].
-
-Mon Dec 24 05:13:04 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): should associate new encoding if modified.
-
-Mon Dec 24 04:04:12 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/net/http/test_https.rb: should rescue LoadError.
-
-Mon Dec 24 03:57:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c, vm.h: fix to support sparc machine.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>
-
-Mon Dec 24 03:35:19 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: remove additional "-".
-
-Mon Dec 24 02:59:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_check_readable): should not fill fptr->enc always.
-	  read-write IO (e.g. socket) does not work.  [ruby-dev:32685]
-
-	* io.c (io_read_encoding): retrieve reading encoding.
-
-	* io.c (prepare_getline_args): convert RS to external encoding.
-
-	* string.c (str_new_shared): was setting embedding flag of wrong
-	  string object.  [ruby-dev:32685]
-
-	* io.c (io_enc_str): should preserve default_external encoding.
-
-	* io.c (appendline): should do multibyte aware RS search.
-
-Mon Dec 24 02:06:35 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_open): documentation update.
-
-	* io.c (rb_io_s_pipe): ditto.
-
-	* io.c (io_fwrite): wrong encoding destination.
-
-	* io.c (rb_io_external_encoding): should return the encoding of
-	  the file reading.
-
-	* io.c (rb_io_internal_encoding): should return the encoding of
-	  read string.
-
-Mon Dec 24 01:46:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_pipe): allow specifying read-side encoding.
-
-	* io.c (io_enc_str): wrong encoding destination.
-
-Mon Dec 24 01:03:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): comparison including broken
-	  coderange strings do not consider encoding.
-
-Mon Dec 24 00:57:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (open_key_args): IO direct methods (foreach, readlines,
-	  read) now takes keyword argument: encoding, mode, open_args.
-
-Mon Dec 24 00:52:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_read): encoding argument reverted.
-
-	* io.c (mode_enc): independent function to share code.
-
-	* io.c (rb_io_internal_encoding): new method.
-
-Mon Dec 24 00:47:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_beginendblock.rb (TestBeginEndBlock::test_endblockwarn):
-	  rename endblockwarn.rb to endblockwarn_rb to avoid unnecessary
-	  warning in make test.
-
-Sun Dec 23 23:03:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_codepoint): implemented to raise invalid
-	  encoding.
-
-	* include/ruby/encoding.h (rb_enc_codepoint): macro is replaced as a
-	  declaration.
-
-Sun Dec 23 19:45:22 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.httpdate): fix 2 digits year for 20xx.
-	  reported by Tadayoshi Funaba.  [ruby-dev:32687]
-
-Sun Dec 23 19:33:42 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/open-uri.rb:  Fix method redefined warning.  [ruby-core:14304]
-
-Sun Dec 23 18:31:49 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (rb_nkf_enc_get): use rb_define_dummy_encoding.
-
-	* ext/nkf/nkf.c (Init_nkf): use rb_nkf_enc_get("ASCII").
-
-	* ext/nkf/nkf-utf8/nkf.c: Update 1.161.
-
-	* ext/nkf/nkf-utf9/config.h: default output encoding is now UTF-8.
-
-	* ext/nkf/lib/kconv.rb (Kconv.kconv): replace Encoding#name by
-	  Encoding#to_s.
-
-Sun Dec 23 18:02:52 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/gem_open_uri.rb:  Fix version check.
-
-Sun Dec 23 17:24:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_init): add eucJP as an alias of EUC-JP.
-
-Sun Dec 23 17:00:23 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.httpdate): use Time.utc for
-	  "day-of-week, dd-mon-yy HH::MM:SS GMT" format.
-
-Sun Dec 23 16:12:40 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc:  Fix 1.9 warnings.
-
-Sun Dec 23 15:28:37 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems, test/rubygems:  Fix new 1.9 warnings.
-
-Sun Dec 23 14:43:10 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb:  Use require to load rubygems.rb so the correct path
-	  is in $LOADED_FEATURES on RubyGems upgrade.
-
-Sun Dec 23 11:26:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (sym_call): use exact argument array interface.
-	  [ruby-core:14279]
-
-Sun Dec 23 11:01:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_binmode_m): removed C99ism.
-
-Sun Dec 23 10:23:23 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode_data_one_byte.c: Better (and more honest) optimization.
-
-	* transcode_data_japanese.c: First optimization step.
-
-Sun Dec 23 09:07:02 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h, encoding.c, re.c, io.c, parse.y, numeric.c,
-	  ruby.c, transcode.c, ext/nkf/nkf.c: rename rb_ascii_encoding to
-	  rb_ascii8bit_encoding.  rb_ascii_encoding is ambiguous with
-	  ASCII-8BIT and US-ASCII.
-
-Sun Dec 23 03:35:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* version.h: use patchlevel if revision is not set.
-
-	* {bcc32,win{32,ce}}/setup.mak (-version-): skip including revision.h.
-
-	* common.mk (srcs): new target to generated sources.
-
-	* common.mk (encs, ext/ripper/ripper.c): MAKEFLAGS needs -.
-
-	* enc/depend, enc/make_encmake.rb: use erb.
-
-Sun Dec 23 01:56:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_mode_enc): do not set encoding unless explicitly
-	  specified.
-
-	* io.c (rb_io_check_readable): fill fptr->enc by default_external
-	  if it's empty.
-
-	* io.c (io_enc_str): fptr->enc is always set for reading IO (by
-	  rb_io_check_readable(fptr)).
-
-Sun Dec 23 01:18:06 2007  David Flanagan  <david@davidflanagan.com>
-
-	* io.c, io.h: temporary patch to partially implement
-	  transcode-on-read and transcode-on-write
-
-Sun Dec 23 00:48:05 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/net/imap/test_imap.rb: added tests for SSL.
-
-Sat Dec 22 21:10:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (syck_genericresolver_node_import): should
-	  not set instance variable "@kind" before initializing it.
-	  [ruby-dev:32677]
-
-Sat Dec 22 19:52:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_objectspace.rb: fix condition.
-
-Sat Dec 22 19:17:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/probeprofiler/: removed.
-
-Sat Dec 22 19:14:38 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* process.c (rb_f_fork): Unsupport Kernel.fork() on NetBSD.
-
-Sat Dec 22 18:20:13 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (version.o): add dependency. [ruby-dev:32680]
-
-Sat Dec 22 17:45:11 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (Init_nkf): use rb_ascii_encoding() for
-	  rb_nkf_enc_get("US-ASCII").
-	  * if use rb_nkf_enc_get("US-ASCII"), ruby will crash - this is bug?
-
-Sat Dec 22 17:39:03 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb ($extmk): fixed broken condition.
-
-Sat Dec 22 17:35:59 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8.c: Update nkf.c rev:1.157.
-
-	* ext/nkf/nkf.c (rb_nkf_enc_get): replicate proper based encoding.
-
-	* ext/nkf/kconv.c (Kconv#kconv, to*): use self.encoding as from_enc
-	  when from_enc isn't given.
-
-Sat Dec 22 17:06:50 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/net/ssl.rb (OpenSSL::SSL::SSLContext.build): removed.
-
-	* ext/openssl/lib/net/ssl.rb (OpenSSL::SSL::SSLContext#set_params):
-	  new method to set suitable SSL parameters.
-
-	* lib/net/pop.rb, lib/net/http.rb, lib/net/imap.rb,
-	  test/openssl/test_ssl.rb: follow above change.
-
-	* test/net/http/test_https.rb: refine error case.
-
-Sat Dec 22 16:58:49 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (encode_utf7): accept UTF-8 strings.
-
-	* lib/net/imap.rb (decode_utf7): return UTF-8 strings.
-
-Sat Dec 22 15:56:36 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* transcode_data_japanese: typo.
-
-Sat Dec 22 15:54:54 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* ChangeLog: Information for last patch got lost, fixed
-
-	* test/ruby/test_transcode.rb: Added simple tests for
-	  EUC-JP and Shift_JIS and tests for ASCII-only range
-
-Sat Dec 22 15:45:45 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode_data_one_byte: slightly optimized
-
-	* transcode_data_japanese: new data file for EUC-JP and SHIFT_JIS
-	  (not yet optimized; tests to follow; data from
-	  http://nkf.sourceforge.jp/ucm/{SJIS|eucJP}-nkf.ucm)
-
-	* common.mk, transcode.c: Adjusted for transcode_data_japanese
-
-Sat Dec 22 15:30:13 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* */Makefile.sub (MFLAGS): define unless defined.
-
-Sat Dec 22 15:17:40 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb ($extmk): set true only when under ext/ or tool/.
-
-Sat Dec 22 15:14:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs, ext/ripper/ripper.c): needs MFLAGS.
-
-	* configure.in (STRINGIZE): stringizing macro.
-
-	* include/ruby/defines.h (STRINGIZE): fallback.
-
-	* tool/make-snapshot: new file.
-
-	* version.c (ruby_description, ruby_copyright): string constants for
-	  -v option.
-
-Sat Dec 22 15:03:37 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (initialize): fixed documentation.
-
-Sat Dec 22 15:01:16 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/pop.rb (enable_ssl): use OpenSSL::SSL::SSLContext.build
-	  instead of SSLContext.new (default verify mode is now
-	  OpenSSL::SSL::VERIFY_PEER).
-
-Sat Dec 22 14:45:21 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb: shouldn't freeze nil. [ruby-dev:32677]
-
-Sat Dec 22 14:27:27 2007  Tanaka Akira  <akr@fsij.org>
-
-	* regenc.c (onigenc_ascii_is_code_ctype): moved from enc/ascii.c.
-
-	* regenc.h (onigenc_ascii_is_code_ctype): declared.
-
-	* enc/ascii.c: use onigenc_ascii_is_code_ctype.
-
-	* enc/us_ascii.c: new file for US-ASCII.
-
-Sat Dec 22 14:30:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reg_named_capture_assign_iter): allows non-ascii names and
-	  get rid of reserved word IDs.
-
-Sat Dec 22 14:18:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_float.rb, test_sprintf.rb: fix test place.
-
-Sat Dec 22 14:17:02 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_objectspace.rb: skip frozen string.
-
-Sat Dec 22 14:02:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* array.c (rb_ary_permutation): add volatile to avoid GC problem.
-
-Sat Dec 22 11:47:42 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_obj_instance_eval): use class of immediate objects.
-
-	* test/ruby/test_eval.rb: fix a test.
-
-Sat Dec 22 11:37:06 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* encoding.c (rb_locale_charmap): win32 support.
-
-Sat Dec 22 11:31:14 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb:  Place bin dir before lib dir so gem bin stubs work.
-
-Sat Dec 22 11:05:44 2007  Jim Weirich  <jim@tardis.local>
-
-	* lib/rake.rb (Rake): Added Rake and related libraries to the
-	  source code base.
-
-Sat Dec 22 10:30:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/insns2vm.rb: moved from lib/vm/instruction.rb.
-
-Sat Dec 22 10:25:44 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (reg_named_capture_assign_iter): captured name should
-	  not be reserved word.  a patch from Keita Yamaguchi
-	  <keita.yamaguchi AT gmail.com> in [ruby-dev:32675].
-
-	* parse.y (reg_named_capture_assign_iter): just ignore the
-	  captures that do not have valid local variable name.
-
-Sat Dec 22 10:19:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_method_name): now __method__ and __callee__ are
-	  aliases.  [ruby-core:14244]
-
-Sat Dec 22 08:29:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_buf_append): improvement for non-broken coded
-	  strings.
-
-Sat Dec 22 06:30:04 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_fork.rb: skip if fork is not unsupported.
-
-	* bootstraptest/test_io.rb: skip if require failed.
-
-Sat Dec 22 06:09:12 2007  David Flanagan  <david@davidflanagan.com>
-
-	* io.c: fix typo in rdoc comment
-
-Sat Dec 22 05:09:43 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_str_new, rb_intern3): rb_default_encoding() renamed.
-
-	* ext/nkf/nkf.c (rb_nkf_putchar): ditto.
-
-Sat Dec 22 03:54:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_ascii_encoding): renamed from previous
-	  rb_default_encoding().
-
-Sat Dec 22 02:49:02 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (command): block from cmd_brace_block was ignored.
-	  [ruby-dev:32644]
-
-	* re.c (rb_reg_prepare_re): stop ENCODING_NONE warning if the
-	  encoding of the str is ASCII-8BIT.
-
-Sat Dec 22 01:52:11 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_ungetc): avoid buffer relocation, which might cause
-	  serious problem under concurrent situation.
-
-Sat Dec 22 01:35:41 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (ARG_ENCODING_NONE): defined for /.../n option.
-	  (REG_ENCODING_NONE): ditto.
-	  (rb_char_to_option_kcode): return ARG_ENCODING_NONE for n.
-	  (rb_reg_prepare_re): warn /ascii/n =~ "non-ascii".
-	  (rb_reg_initialize): set REG_ENCODING_NONE from ARG_ENCODING_NONE.
-
-Sat Dec 22 01:23:10 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/json/test_json_addition.rb (test_core): do not use Time.now
-	  because JSON can't hold nsec.
-
-Sat Dec 22 01:10:30 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/tk/sample/tkextlib/vu/canvSticker2.rb,
-	  ext/tk/sample/demos-{en,jp}/bind.rb: fix typo. [ruby-dev:32668]
-
-Sat Dec 22 00:56:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sample/test.rb (valid_syntax): force_encoding input script.
-
-Fri Dec 21 23:48:38 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/mkmf.rb (depend_rules): suffixes list broken. fixed.
-
-Fri Dec 21 20:18:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_mul0): remove unused variable.
-
-	* bignum.c (bigdivrem): ditto.
-
-Fri Dec 21 20:13:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/ruby.h (rb_catch_obj, rb_throw_obj): prototyped.
-
-	* include/ruby/intern.h (rb_fiber_alive_p): prototyped.
-
-Fri Dec 21 20:09:18 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ): retry increasing until valid char is found.
-
-Fri Dec 21 20:00:02 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_replicate): now creates first class encoding.
-
-	* encoding.c (rb_define_dummy_encoding): always based on the default
-	  encoding.
-
-	* encoding.c (rb_enc_dummy_p): check if dummy.
-
-	* encoding.c (enc_inspect): shows if dummy.
-
-	* encoding.c (Init_Encoding): added dummy? method
-
-	* include/ruby/encoding.h (ENCODING_INLINE_MAX): increased.
-
-Fri Dec 21 18:40:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* io.c: write() should be in blocking region.
-
-	* bootstraptest/test_io.rb, test_knownbug.rb: move a fixed test.
-
-Fri Dec 21 17:56:30 2007  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
-
-	* ext/tk/tcltklib.c: provisional support on Ruby-VM.
-
-	* ext/tk/MANUAL_tcltklib.eng, ext/tk/MANUAL_tcltklib.eucj:
-	  modify document about new functions.
-
-	* ext/tk/lib/tk.rb, ext/tk/lib/tk/labelframe.rb,
-	  ext/tk/lib/tk/frame.rb, ext/tk/lib/tk/toplevel.rb,
-	  ext/tk/lib/tk/scrollbar.rb, ext/tk/lib/tk/message.rb,
-	  ext/tk/lib/tk/listbox.rb, ext/tk/lib/tk/text.rb,
-	  ext/tk/lib/tk/scale.rb, ext/tk/lib/tk/entry.rb,
-	  ext/tk/lib/tk/ttk_selector.rb, ext/tk/lib/tk/menu.rb,
-	  ext/tk/lib/tk/label.rb, ext/tk/lib/tk/spinbox.rb,
-	  ext/tk/lib/tk/textmark.rb, ext/tk/lib/tk/winpkg.rb,
-	  ext/tk/lib/tk/checkbutton.rb, ext/tk/lib/tk/panedwindow.rb,
-	  ext/tk/lib/tk/texttag.rb, ext/tk/lib/tk/root.rb,
-	  ext/tk/lib/tk/textimage.rb, ext/tk/lib/tk/radiobutton.rb,
-	  ext/tk/lib/tk/package.rb, ext/tk/lib/tk/macpkg.rb,
-	  ext/tk/lib/tk/composite.rb, ext/tk/lib/tk/autoload.rb,
-	  ext/tk/lib/tk/canvas.rb, ext/tk/lib/tk/button.rb,
-	  ext/tk/lib/tk/textwindow.rb,
-	  ext/tk/lib/tkextlib/iwidgets/scrolledtext.rb,
-	  ext/tk/lib/tkextlib/tile/style.rb,
-	  ext/tk/lib/tkextlib/tile/tscrollbar.rb,
-	  ext/tk/lib/tkextlib/tile/tpaned.rb, ext/tk/lib/tkextlib/tile.rb,
-	  ext/tk/extconf.rb: support Tcl/Tk8.5 (partial, not complete).
-
-	* ext/tk/sample/demos-jp/widget,
-	  ext/tk/sample/demos-jp/pendulum.rb,
-	  ext/tk/sample/demos-jp/bind.rb,
-	  ext/tk/sample/tkextlib/vu/canvSticker2.rb,
-	  ext/tk/sample/demos-en/pendulum.rb,
-	  ext/tk/sample/demos-en/bind.rb: remove $KCODE and minor bug fix.
-
-Fri Dec 21 17:49:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (rb_str_transcode_bang): returns self if no conversion.
-	  [ruby-dev:32662]
-
-Fri Dec 21 17:44:47 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*:  Update to RubyGems 1.0.1, r1581
-
-Fri Dec 21 17:32:49 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/pending.rb: renamed from featurebug.rb.
-	  This file contains bugs which is known but will not be
-	  fixed in days.
-
-Fri Dec 21 17:31:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* debug.c (dummy_gdb_enums.various): added ENCODING and CODERANGE
-	  constants.
-
-	* .gdbinit: use enum constants.
-
-Fri Dec 21 17:28:17 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/featurebug.rb: added.
-
-	* bootstraptest/test_knownbug.rb: move a feature bug.
-
-Fri Dec 21 17:25:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c (rb_thread_atfork): fix to mark thread object.
-	  [ruby-dev:32404]
-
-	* bootstraptest/test_knownbug.rb, test_fork.rb: move a fixed test.
-
-Fri Dec 21 17:07:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.h: extern variable should not be initialized.
-
-	* thread_pthread.c: add a parameter.
-
-Fri Dec 21 16:50:43 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (Init_Encoding): use enc_name as to_s.
-	  (enc_inspect): renamed from enc_to_s.  add "#" at beginning.
-
-Fri Dec 21 16:37:43 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/config.h (MIME_DECODE_DEFAULT, X0201_DEFAULT):
-	 defined as FALSE.  nkf and kconv don't decode MIME encoded string
-	 and don't convert JIS X 0201 Katakana.
-
-	* test/nkf/test_kconv.rb: fix tests.
-
-Fri Dec 21 16:33:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (enumerator_iter_i): adjusted for rb_block_call_func.
-
-	* include/ruby/ruby.h (rb_block_call_func): function to be called back
-	  as block.
-
-Fri Dec 21 16:25:25 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* common.mk, transcode_data_iso_8859.c: renamed to
-	  transcode_data_one_byte.c.
-
-Fri Dec 21 16:10:30 2007  Shigeo Kobayashi  <shigeo@tinyforest.jp>
-
-	* ext/bigdecimal/bigdecimal.c (VpMidRound): Round method bug
-	  pointed by Ryan Platte fixed(Patch to the patch from "NATORI
-	  Shin").  [ruby-talk:273360]
-
-Fri Dec 21 16:06:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (append_utf8): use rb_utf8_encoding() instead of
-	  rb_enc_find("utf-8").
-
-Fri Dec 21 15:59:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_init): use enc_register_at() directly.
-
-	* encoding.c (rb_utf8_encoding): returns utf-8 encoding.
-
-	* include/ruby/encoding.h (rb_utf8_encoding): prototyped.
-
-	* parse.y (UTF8_ENC): uses rb_utf8_encoding().
-
-Fri Dec 21 15:31:59 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_s_read): allow specifying encoding explicitly.
-
-	* io.c (rb_io_binmode): specifies encoding to ASCII-8BIT (binary).
-
-	* io.c (rb_io_s_read): IO should be in binary mode when offset is
-	  specified.
-
-	* encoding.c (rb_to_encoding): returns default encoding if no
-	  corresponding encoding found.
-
-Fri Dec 21 15:24:22 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (initialize): accept service name.  changed
-	  the default value of the old style +verify+ argument to true.
-
-Fri Dec 21 15:15:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (rb_garbage_collect): new function for debugging.
-
-Fri Dec 21 15:16:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_to_encoding_index): should return error instead of
-	  exception even if type is incorrect.
-
-Fri Dec 21 14:58:27 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_init_copy): prohibit cloning of
-	  generators since Fibers cannot be copied.
-
-	* enumerator.c (enumerator_init_copy): typo fixed.
-
-Fri Dec 21 14:46:07 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (Init_IO): define IO::BINARY even if O_BINARY is not exist.
-
-Fri Dec 21 14:01:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_system.rb (TestSystem::valid_syntax): apply
-	  ASCII-8BIT encoding explicitly.
-
-	* re.c (rb_reg_prepare_re): add encoding name in the message.
-
-Fri Dec 21 13:54:05 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c: change "character encodings differ" error messages.
-
-Fri Dec 21 13:46:58 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_register): set encoding constant.
-
-	* encoding.c (rb_enc_find_index): replace non-alphanumeric chars with
-	  underscores, so that initialize function can be called.
-
-	* encoding.c (rb_enc_find_index): extension libraries have lower case
-	  names conventionally.
-
-	* ruby.c (proc_options, process_options): finds encoding after
-	  load_path is initialized.
-
-Fri Dec 21 13:10:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_external_encoding): new method.
-
-	* encoding.c (rb_enc_from_encoding): returns Qnil for NULL
-	  encoding.
-
-	* io.c (rb_io_external_encoding): should fill delayed
-	  initialization for STDIN.
-
-Fri Dec 21 13:09:11 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_locale_charmap): return nil if no locale information.
-
-Fri Dec 21 12:55:39 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/runit, lib/rubyunit.rb, test/testunit/runit: removed.
-
-Fri Dec 21 12:45:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_chomp_bang): avoid unnecessary loop using
-	  ONIGENC_LEFT_ADJUST_CHAR_HEAD().
-
-Fri Dec 21 12:32:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* file.c (Init_File): File.exists? revived.
-
-	* dir.c (Init_Dir): Dir.exists? again.
-
-Fri Dec 21 12:26:36 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c: remove "illegal".
-
-Fri Dec 21 12:22:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* keywords, parse.y (__ENCODING__): represent script encoding.
-
-Fri Dec 21 12:16:50 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_is_ascii_only_p): new method ascii_only?.
-
-Fri Dec 21 12:11:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_mode_enc): set default external encoding if no
-	  encoding specified explicitly.
-
-Fri Dec 21 12:00:34 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: check langinfo.h and locale.h.
-
-	* encoding.c: use langinfo.h only if available.
-
-	* main.c: use locale.h only if available.
-
-Fri Dec 21 11:47:56 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c: include locale.h
-	  (rb_locale_charmap): new method Encoding.locale_charmap for
-	  nl_langinfo(CODESET).
-
-	* include/ruby/encoding.h (rb_locale_charmap): declared.
-
-	* main.c (main): call setlocale with LC_CTYPE.
-
-	* ruby.c (locale_encoding): use rb_locale_charmap.
-
-Fri Dec 21 11:35:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c, vm_dump.c: fix typo.  Reported by Yuki Mitsui.
-
-Fri Dec 21 11:28:00 2007  Tanaka Akira  <akr@fsij.org>
-
-	* regerror.c, string.c, io.c, lib/getoptlong.rb, lib/net/imap.rb,
-	  compile.c, sprintf.c, parse.y, ext/win32ole/win32ole.c,
-	  ext/tk/sample/demos-en/entry3.rb, ext/tk/lib/tcltk.rb,
-	  ext/openssl/ossl_bn.c, numeric.c, vm.c,
-	  benchmark/bm_so_meteor_contest.rb, bignum.c, ruby.c: don't "illegal"
-	  for non law violation context.
-
-Fri Dec 21 11:23:24 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (enc.mk): depends on $(RBCONFIG) instead of rbconfig.rb.
-
-	* encoding.c (Init_Encoding): ISO-8859-1 is no longer a replica.
-
-	* regenc.h (OnigEncodingDefine): names of extension and encoding can
-	  differ.
-
-	* enc/Makefile.in: always shared.
-
-	* enc/depend (deffile): should not upcase.
-
-	* enc/{ascii,euc_jp,sjis,utf8,iso_8859_{1..16}}.c: fix for Init.
-
-Fri Dec 21 09:26:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: use erb.
-
-Fri Dec 21 08:07:35 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enumerator.c (enumerator_next): should call next_init() if fiber
-	  is dead already. [ruby-dev:32459]
-
-Fri Dec 21 01:21:49 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLContext.build):
-	  enable CRL checking by default.
-
-Fri Dec 21 01:20:56 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/http.rb (Net::HTTP#connect): use
-	  OpenSSL::SSL::SSLContext.build instead of SSLContext.new (default
-	  verify mode is now OpenSSL::SSL::VERIFY_PEER).
-
-	* lib/net/https.rb: SSL parameters are defined by attr_accessor.
-
-	* test/net/http/test_https.rb: add test for HTTPS features.
-
-Fri Dec 21 01:11:37 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* io.c (select_internal): should return original value.
-
-Fri Dec 21 00:26:39 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): wrong encoding check for tree strings.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_tr_s): "invalid mbstring
-	  sequence" is not an error to be tested.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_tr): ditto.
-
-Thu Dec 20 19:29:07 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (initialize): the second argument is an option
-	  hash now.  use SSLContext.build to specify SSL parameters.
-
-Thu Dec 20 19:11:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread_pthread.c (native_thread_apply_priority): check
-	  _POSIX_PRIORITY_SCHEDULING for OpenBSD.
-
-Thu Dec 20 18:33:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* configure.in: add libthr for FreeBSD.
-
-Thu Dec 20 18:17:14 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk, *.ci: renamed to *.c.
-
-	* eval_load.c: renamed to load.c.
-
-Thu Dec 20 17:36:01 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*:  Import RubyGems 1.0.0, r1575.
-
-Thu Dec 20 17:18:38 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c: support Proc#binding.
-
-	* sample/test.rb: add a test.
-
-Thu Dec 20 17:15:15 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* pack.c: Slight change to documentation ('character' ->
-	  'byte (C char)'). [ruby-core:13126], see also [ruby-core:13998].
-
-Thu Dec 20 17:07:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (enc.mk): depends on rbconfig.rb.
-
-	* regenc.h (OnigEncodingDefine): external encoding definition macro.
-
-	* enc/Makefile.in: fix for linking.
-
-	* enc/depend, enc/make_encmake.rb: fix for Windows.
-
-	* enc/{ascii,euc_jp,sjis,utf8,iso_8859_{1..16}}.c: renamed.
-
-Thu Dec 20 16:42:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* iseq.c (find_line_no): return 0 if not found.
-
-Thu Dec 20 16:04:17 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci, vm.c, vm_core.h: change interface of
-	  vm_invoke_block() to specify block ptr.  [ruby-talk:266422]
-
-	* cont.c, eval_jump.ci, insns.def, proc.c, signal.c, thread.c:
-	  apply above change.
-
-	* bootstraptest/test_knownbug.rb: move fixed bug.
-
-	* bootstraptest/test_block.rb: ditto. and add a test.
-
-Thu Dec 20 15:47:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/iso_8859_{1..16}.c: renamed.
-
-Thu Dec 20 09:59:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_expandarray): fix sp increase place.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-dev:32581].
-
-	* bootstraptest/test_massign.rb: add a test for above.
-
-	* bootstraptest/test_syntax.rb: fix last committed test.
-
-Thu Dec 20 09:47:58 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_syntax.rb: add a test.
-
-Thu Dec 20 09:40:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each/NODE_RETURN): fix stack consistency.
-
-Thu Dec 20 09:42:11 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (big2str_orig): access beyond memory region cause crash
-	  on interrupt.  a patch from Yusuke ENDOH <mame AT tsg.ne.jp> in
-	  [ruby-dev:32651].  [ruby-dev:32641]
-
-Thu Dec 20 09:06:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_index): wrong starting position.
-
-Thu Dec 20 06:34:27 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): add pop after throw as return.
-
-	* bootstraptest/test_knownbug.rb, test_syntax.rb: move resolved test.
-
-	* vm_core.h, iseq.c, compile.h: add debug output code.
-
-Thu Dec 20 04:57:18 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): remove unused retry entry.
-
-Thu Dec 20 04:15:41 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* */Makefile.sub (DEFS, RM): output to config.status.
-
-Thu Dec 20 02:59:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* common.mk (encs): create encoding directory.
-
-Thu Dec 20 02:50:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/iso8859_{1..16}.c: adjust for ruby.
-
-Thu Dec 20 02:28:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/iso8859_{1..16}.c: imported from Onigiruma 5.9.0.
-
-Thu Dec 20 02:23:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/Makefile.in (RM): added.
-
-	* enc/depend (encs): sort in alpha-numeric order.
-
-	* enc/depend (clean, distclean): added.
-
-Thu Dec 20 01:10:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): should handle upper level eval iseq
-	  from break/next, and COMPILE_ERROR() breaks only one block.
-	  [ruby-dev:31372]
-
-Thu Dec 20 00:07:36 2007  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* test/drb/drbtest.rb (test_07_public_private_protected_missing):
-	  followed current Ruby specification.
-
-Wed Dec 19 23:57:37 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_inspect, dir_path, dir_tell): check for frozen and closed
-	  is not needed.  [ruby-dev:32640]
-
-Wed Dec 19 22:59:52 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_sublen): adjust position if position is not at the
-	  head of a character.
-
-	* string.c (rb_str_chomp_bang): check if match start at the head
-	  of a character.
-
-	* string.c (rb_str_chomp_bang): wrong adjust condition.
-
-	* string.c (rb_str_rindex): comparison length should be based on
-	  bytes, not characters.
-
-	* string.c (rb_str_rindex_m): too much adjustment.
-
-	* re.c (reg_match_pos): pos adjustment should be based on
-	  characters.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_str_insert): test updated
-	  to check negative offset behavior.
-
-	* string.c (rb_str_each_line): should consider rslen.
-
-	* string.c (rb_str_buf_append): should propagate encoding.
-
-	* string.c (rb_str_each_line): ditto.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_str_each_line): should
-	  check encoding as well.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_str_each_line): empty
-	  array can not propagate encoding;  should not check.
-
-Wed Dec 19 21:42:18 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): should set checked encoding.
-
-	* string.c (rb_str_sub_bang): applied r14212 too.
-
-Wed Dec 19 20:40:01 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* bignum.c (bigmul1): C99ism.
-
-	* bignum.c (bigdivrem1): need dummy return value.
-
-Wed Dec 19 19:18:06 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf-utf8/nkf.c: Updated.
-
-	* ext/nkf/nkf.c (rb_nkf_enc_get): added.
-	  (find encoding or replicate default encoding)
-
-	* ext/nkf/nkf.c (NKF::<ENCODING>): redefine encoding constant.
-
-	* ext/nkf/lib/kconv.rb (Kconv::<ENCODING>): redefined as Encoding.
-
-	* ext/nkf/lib/kconv.rb: refactoring.
-
-Wed Dec 19 19:11:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_mul0): blocking check for bigger numbers.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-dev:32632].
-
-	* bignum.c (bigdivrem): ditto.
-
-Wed Dec 19 17:34:50 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): remove "retry" in block.
-	  ("iter{retry}" cause syntax error)
-	  Currently, "begin; ...; rescue; iter{retry}; end" cause
-	  syntax error too.
-
-	* bootstraptest/test_jump.rb: ditto.
-
-	* lib/drb/invokemethod.rb: ditto.
-
-	* sample/drb/darrayc.rb: ditto.
-
-	* sample/test.rb: ditto.
-
-	* test/drb/drbtest.rb: ditto.
-
-	* test/ruby/test_iterator.rb: ditto.
-
-	* sample/test.rb: add a 'test' directory on the SYSTEM test.
-
-Wed Dec 19 17:12:59 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb, test_block.rb:
-	  move fixed bug.
-
-	* bootstraptest/test_m17n.rb: added.
-
-Wed Dec 19 16:59:55 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (errinfo_place): skip if error is Fixnum.  [ruby-dev:32608]
-
-	* bootstraptest/test_exception.rb, test_known_bug.rb: move fixed bug.
-
-Wed Dec 19 16:31:58 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (reg_named_capture_assign_iter): remove C99 dependency.
-
-	* parse.y (reg_named_capture_assign_iter): get rid of creating
-	  unnecessary ID.
-
-	* parse.y (rb_enc_symname2_p): check for non-nul-terminated string.
-
-Wed Dec 19 15:37:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insnhelper.ci (vm_yield_with_cfunc): call cfunc with
-	   (argv[0], data, argc, argv) to pass all arguments.
-
-	* enumerator.c (enumerator_each_i): adapted to new calling
-	  convention.
-
-Wed Dec 19 15:13:20 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_justify): should propagate encoding from pad
-	  string too.
-
-Wed Dec 19 13:57:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (TIMEZONE_VOID): check whether timezone requires zero
-	  arguments.  [ruby-dev:32631]
-
-Wed Dec 19 13:22:14 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/nkf/nkf.c (NKF::_ENCODING): removed.
-
-	* ext/nkf/nkf.c (rb_nkf_kconv): renamed to rb_nkf_convert.
-
-	* ext/nkf/nkf.c (rb_nkf_convert): set encoding.
-
-	* ext/nkf/nkf.c (rb_nkf_guess1): removed.
-
-	* ext/nkf/nkf.c (rb_nkf_guess2): renamed to rb_nkf_guess.
-
-	* ext/nkf/nkf.c (rb_nkf_guess):
-	  guess method now returns encoding object.
-
-	* ext/nkf/nkf-utf8/nkf.c: Update to nkf 2.0.8 2007-12-19.
-
-Wed Dec 19 10:52:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_cstr_to_inum): an underscore succeeding after octal
-	  prefix is allowed.  [ruby-core:14139]
-
-Wed Dec 19 00:09:19 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_cstr_to_inum): wrong radix check.  a patch from
-	  Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-dev:32628].
-
-	* bignum.c (big2str_find_n1): ditto.
-
-Tue Dec 18 23:53:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): fix for segfault.  [ruby-dev:31372]
-
-Tue Dec 18 23:44:32 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/net/http/utils.rb: split TestNetHTTPUtils module from
-	  test/net/http/test_http.rb. and start HTTP server in each test case.
-
-Tue Dec 18 23:27:51 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#accept_client):
-	  should rescue Errno::EINVAL from TCPServer#accept. this exception
-	  might occur if the server socket is not in ready to listen.
-
-	* lib/webrick/server.rb (WEBrick::GenericServer#accept_client):
-	  don't call TCPServer#close if the :ShutdownSocketWithoutClose is set.
-
-	* lib/webrick/config.rb (WEBrick::Config::General): add new parameter
-	  :ShutdownSocketWithoutClose.
-
-Tue Dec 18 22:51:47 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLServer#shutdown):
-	  new method which calls TCPSocket#shutdown of the underlying socket.
-
-Tue Dec 18 22:11:50 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/rss/parser.rb, lib/rss/atom.rb, lib/rss/rss.rb,
-	  test/rss/rss-assertions.rb, test/rss/test_atom.rb: use
-	  pack/unpack("m") instead of base64 library.
-
-	* lib/webrick/httpproxy.rb: use delete("\n") instead of chomp/chop
-	  because the result of pack("m") might be multi-line.
-
-Tue Dec 18 22:12:35 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci, vm.c: rewrite sp manipulation around method/block
-	  invocation.  [ruby-dev:32547]
-
-Tue Dec 18 22:11:23 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/dl/win32/lib/win32/sspi.rb: use pack/unpack("m") instead of
-	  base64 library which was already removed.
-
-Tue Dec 18 21:09:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (invoke_block): merge 2 stack overflow checks.
-
-Tue Dec 18 20:58:35 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, insnhelper.ci, insns.def, object.c, vm.c, vm.h:
-	  optimize !@, != method invocation.
-
-	* id.c, id.h: ditto.
-
-	* bootstraptest/test_syntax.rb: add tests for above.
-
-Tue Dec 18 18:10:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: add issues.
-
-Tue Dec 18 20:22:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (arg tMATCH arg): call reg_named_capture_assign_gen if regexp
-	  literal is used.
-	  (reg_named_capture_assign_gen): assign the result of named capture
-	  into local variables.
-	  [ruby-dev:32588]
-
-	* re.c: document the assignment by named captures.
-
-Tue Dec 18 18:09:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_splice): propagate encoding.
-
-	* string.c (rb_str_subpat_set): ditto.
-
-Tue Dec 18 17:27:12 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_obj_freeze): preserve frozen state of immediate
-	  values in internal hash table, a la generic_ivar.
-
-	* object.c (rb_obj_frozen_p): check immediate values too.
-
-	* variable.c (generic_ivar_set): add frozen check fro immediate
-	  values.
-
-Tue Dec 18 17:04:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (rb_str_transcode_bang, rb_str_transcode): set new
-	  encoding even if no conversion is done because of 7bit only.
-	  [ruby-dev:32591]
-
-Tue Dec 18 15:43:59 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs, ext/ripper/ripper.c): other options must come
-	  before MAKEFLAGS in GNU make.
-
-Tue Dec 18 15:19:55 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rdoc/parsers/parse_rb.rb: Don't call private fail anymore.
-
-Tue Dec 18 15:17:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs, ext/ripper/ripper.c): pass MAKEFLAGS.
-
-Tue Dec 18 14:45:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (op_tbl): remove duplication to avoid symbol aliases.
-
-Tue Dec 18 14:39:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_nth): need not to raise out-of-range exception.
-
-	* test/ruby/test_m17n.rb (TestM17N::test_str_aref_len): removed
-	  debug print.
-
-Tue Dec 18 14:05:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/depend: get rid of target expanded as empty for nmake.
-
-Tue Dec 18 07:56:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* proc.c (rb_obj_public_method): Object#public_method to retrieve
-	  public method object.
-
-	* proc.c (rb_mod_public_instance_method): Module#public_instance_method
-	  to retrieve public instance method from class / module.
-
-	* proc.c (mnew): visibility check added.
-
-	* eval_error.ci (rb_print_undef): add rb_ prefix.
-
-	* eval_error.ci (rb_print_undef): add visibility in the error
-	  message.
-
-Tue Dec 18 05:54:26 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/Env.rb, lib/base64.rb, lib/importenv.rb, lib/eregex.rb: removed.
-
-	* lib/ping.rb, lib/readbytes.rb: removed
-
-Tue Dec 18 02:30:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (BUILTIN_ENCS): removed.
-
-	* common.mk (enc.mk): pass BUILTIN_ENCS from command line.
-
-	* enc/depend: ditto.
-
-	* enc/make_encmake.rb: ditto.
-
-Tue Dec 18 01:46:48 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* sprintf.c (rb_str_format): need to clear output buffer to avoid
-	  broken encoding compatibility check.
-
-Tue Dec 18 01:40:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (depend_rules): inserts ruby to only headers.
-
-Tue Dec 18 01:21:19 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_encode_length): chomp eol style modifiers.
-
-	* parse.y (parser_magic_comment): ditto.
-
-	* parse.y (set_file_encoding): ditto.
-
-Tue Dec 18 01:15:44 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs): added dependencies.
-
-	* enc/Makefile.in, enc/depend, enc/make_encmake.rb: moved serb code.
-
-	* lib/mkmf.rb (depend_rules): now takes content string, not file name.
-
-	* win32/enc-setup.mak: overrides default target.
-
-Tue Dec 18 00:26:12 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): raise error if non-Unicode fixed
-	  encoding option is specified for regexp literals with \u{}
-	  escapes.
-
-	* string.c (rb_str_squeeze_bang): should squeeze multibyte
-	  characters as well.
-
-Mon Dec 17 21:41:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/enc-setup.mak: extracts BUILTIN_ENCOBJS.
-
-	* tool/compile_prelude.rb: needs srcdir.
-
-Mon Dec 17 21:24:04 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* common.mk (miniprelude.c): add -I$(srcdir).
-
-Mon Dec 17 20:53:27 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/ossl_ssl.c (ossl_sslctx_set_ssl_version):
-	  new method OpenSSL::SSL::SSLContext#ssl_version to wrap
-	  SSL_CTX_set_ssl_version.
-
-	* ext/openssl/ossl_ssl.c (ossl_ssl_get_verify_result):
-	  new method OpenSSL::SSL::SSLSocket#verify_result to wrap
-	  SSL_get_verify_result.
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLContext.build):
-	  new method to build OpenSSL::SSL::SSLContext with Hash parameters.
-	  this method provides safety default parameters than SSLContext.new.
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL.verify_certificate_identity):
-	  new module function: pull out identity verification process
-	  from OpenSSL::SSL::SSLSocket#post_connection_check.
-
-Mon Dec 17 18:42:23 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (scan_once): need no encoding compatibility check.
-	  it's done inside of re_reg_search().
-
-	* string.c (rb_str_split_m): ditto.
-
-	* re.c (rb_reg_regsub): ditto.
-
-Mon Dec 17 17:50:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_index): check if substring is broken.
-
-	* string.c (rb_str_rindex): ditto.
-
-	* string.c (rb_str_succ): should carry over.
-
-Mon Dec 17 17:47:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (encs): new target to compile external encodings.
-
-	* enc/Makefile.in: became a serb template.
-
-	* enc/make_encmake.rb: creates enc.mk from enc/Makefile.in using serb.
-
-	* lib/mkmf.rb (relative_from): moved from ext/extmk.rb.
-
-	* lib/mkmf.rb ($extmk): true if under to top source directory, not
-	  only ext.
-
-	* lib/mkmf.rb (depend_rules): extracted from create_makefile.
-
-	* tool/serb.rb (serb): splitted from tool/compile_prelude.rb.
-
-Mon Dec 17 17:32:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MAKEFILES): removed enc/Makefile.
-
-	* configure.in (EXTERNAL_ENCOBJS, ENCSOS): removed.
-
-	* enc/Makefile.in (BUILTIN_ENCS): includes .c suffix.
-
-	* enc/depend: splitted from Makefile.in.
-
-	* {bcc32,win32,wince}/setup.mak (-encs-): extracts BUILTIN_ENCOBJS.
-
-Mon Dec 17 17:07:53 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_str_asciionly_p): use rb_enc_str_coderange.
-
-Mon Dec 17 16:39:25 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_enc_str_coderange): set ENC_CODERANGE_BROKEN using
-	  rb_enc_precise_mbclen.
-	  (rb_str_valid_encoding_p): just check coderange is
-	  ENC_CODERANGE_BROKEN or not.
-
-Mon Dec 17 16:04:16 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/openssl/buffering.rb (Buffering#gets): added second
-	  optional argument to specify maximum length limit.
-
-Mon Dec 17 16:02:30 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/webrick/httprequest.rb, lib/webrick/cgi.rb: Request-Line or
-	  header fields should be read with maximum length. [ruby-talk:231745]
-
-Mon Dec 17 14:03:39 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (ENC_CODERANGE_VALID): rename from
-	  ENC_CODERANGE_8BIT.
-
-	* string.c (rb_enc_str_coderange): follow the renaming.
-
-Mon Dec 17 13:56:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_find): wrong condition fixed.
-
-	* sprintf.c (rb_str_format): check encoding based on result, not
-	  the format string.
-
-	* string.c (rb_str_upto): add encoding check.
-
-Mon Dec 17 12:21:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (RUNRUBY): added RUNRUBYOPT.
-
-Mon Dec 17 11:38:59 2007  Tanaka Akira  <akr@fsij.org>
-
-	* thread_win32.ci (native_thread_create): initialize
-	  th->machine_stack_maxsize as rb_gc_stack_maxsize.
-
-Sun Dec 16 17:07:35 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c (transcode_loop): removed special case (-1)
-	  for undefined conversions.
-
-	* transcode_data_iso_8859.c: Changed from character constants
-	  ('\xC2') to integer constants (0xC2) for shorter files and
-	  better readability; eliminated duplicated tables; changed
-	  from -1 offset to actual UNDEF entry (not yet distinguishing
-	  UNDEF and ILLEGAL correctly).
-
-	* test/ruby/test_transcode.rb: added a test for UNDEF conversion.
-
-Sun Dec 16 14:51:59 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (MAKEFILES): should be enc/Makefile, not GNUmakefile.
-	  [ruby-dev:32609]
-
-	* configure.in (BUILTIN_ENCS): removed escapes for OpenBSD.
-
-Sat Dec 15 23:58:46 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/openssl/test_pair.rb (SSLPair#ssl_pair): join the thread, even
-	  on an error.
-
-Sat Dec 15 23:50:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/xmlrpc/webrick_testing.rb: join webrick server thread.
-
-Sat Dec 15 22:27:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (BUILTIN_ENCS): splitted command line instead of
-	  semicolons for Solaris.
-
-Sat Dec 15 21:38:24 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/timeout.rb: join the background thread to make sure it is dead.
-
-Sat Dec 15 20:20:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (enc/Makefile): add external encoding objects list.
-
-	* common.mk (BUILTIN_ENCOBJS): renamed from ENCOBJS.
-
-	* configure.in (BUILTIN_ENCS): [] needs to be enclosed because of m4.
-
-	* Makefile.in (BUILTIN_ENCOBJS): substituted by autoconf.
-
-	* enc/Makefile.in: new file to compile external encoding sources.
-
-	* encoding.c (rb_enc_find_index): auto-load external encoding objects
-	  as "ext/ENCODING_NAME".  [ruby-dev:32606]
-
-Sat Dec 15 13:04:30 2007  Tanaka Akira  <akr@fsij.org>
-
-	* vm_core.h (rb_thread_t): new member machine_stack_maxsize and
-	  machine_register_stack_maxsize.
-
-	* gc.c (rb_gc_stack_maxsize): new global variable for the thread size
-	  of the main thread.
-	  (STACK_LEVEL_MAX): use machine_stack_maxsize of current thread.
-	  (ruby_stack_check): check IA64 register stack.
-	  (ruby_set_stack_size): set rb_gc_stack_maxsize.
-	  (Init_stack): set rb_gc_stack_maxsize.
-
-	* thread_pthread.ci (native_thread_create): initialize
-	  th->machine_stack_maxsize and th->machine_register_stack_maxsize.
-
-	* vm.c (Init_BareVM): initialize th->machine_stack_maxsize and
-	  th->machine_register_stack_maxsize.
-
-	* thread_win32.ci (native_thread_create): initialize
-	  th->machine_stack_maxsize.  not tested.  just a guess at all.
-
-	[ruby-dev:32604]
-
-Sat Dec 15 12:58:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_register, rb_enc_replicate, rb_enc_alias): check
-	  if already registered.
-
-Sat Dec 15 01:57:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rdoc/options.rb (Options::parse): do not access $KCODE any
-	  longer.  [ruby-core:14079]
-
-	* lib/irb/init.rb (IRB::IRB.parse_opts): ditto.
-
-	* lib/cgi.rb (CGI::CGI): ditto.
-
-Fri Dec 14 18:18:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* thread_pthread.ci (native_thread_create): twice the stack size.
-	  512KB is not enough to complete test-all on Debian GNU/Linux on
-	  IA64.
-
-Fri Dec 14 16:10:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_p): RDoc update.  a patch from murphy <murphy AT rubychan.de>.
-	  [ruby-core:14010]
-
-Fri Dec 14 16:06:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_cmp): encoding aware comparison.
-
-	* string.c (rb_str_casecmp): ditto.
-
-Fri Dec 14 15:25:30 2007  Martin Duerst  <duerst@it.aoyama.ac.jp>
-
-	* transcode.c (encoding_equal): new function.
-
-	* transcode.c (str_transcode, transcode_dispatch): added two-step
-	  conversion logic via UTF-8.
-
-	* transcode.c: some minor formatting fixes
-
-	* transcode_data.h, transcode_data_iso_8859.c: Shortened
-	  extremely frequently used macros to shorten file length.
-
-	* test/ruby/test_transcode.rb: Fixed name of test class;
-	  added setup method to ensure all necessary encodings exist;
-	  split tests into more test methods; added tests; fixed ordering
-	  of arguments in assert_equal to have expected result first.
-
-Fri Dec 14 13:47:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (ruby.imp): fix for circular dependency.  a patch from
-	  Yutaka Kanemoto <kinpoco AT gmail.com> in [ruby-dev:32590].
-
-	* regint.h, st.c, ext/json/ext/generator/generator.c: suppress
-	  warnings on AIX.
-
-Fri Dec 14 12:36:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_CHECK_VARTYPE): check if a variable is defined
-	  and its type.
-
-	* configure.in (timezone, altzone): check for recent cygwin.
-
-	* missing/strftime.c (strftime): fix for timezone.  [ruby-dev:32536]
-
-	* lib/mkmf.rb (try_var): should fail for functions.
-
-	* ext/readline/extconf.rb: should use have_func for functions instead
-	  of have_var.
-
-Fri Dec 14 10:25:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/e2mmap.rb (Exception2MessageMapper::E2MM.Raise): $! no
-	  longer modifiable in 1.9.
-
-Fri Dec 14 08:17:24 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (rb_protect): restore root_jmpbuf even if proc exits by
-	  break such as dbm.delete_if { break }.
-
-Fri Dec 14 02:55:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_nth): direct jump if string is 7bit only.  great
-	  performance boost for worst case.
-
-	* string.c (str_strlen): direct size if string is 7bit only.
-
-Fri Dec 14 02:29:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): 1st argument (typically the
-	  receiver) would have higher priority in encoding detection.
-
-Fri Dec 14 02:05:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_synchronized): should check if initialized.
-	  [ruby-dev:32585]
-
-Fri Dec 14 00:54:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_initialize): embedded string may override encoding
-	  of the regular expression.
-
-	* re.c (rb_reg_initialize): fix encoding of regular expression if
-	  embedded string has its own encoding specified.
-
-Thu Dec 13 22:16:46 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): encoding should never fall back
-	  to ASCII-8BIT unless both encodings are ASCII-8BIT.
-
-Thu Dec 13 20:31:28 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (rb_str_shared_replace): make str noembed after free.
-
-Thu Dec 13 20:09:09 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval.c (rb_protect): restore root_jmpbuf to avoid SEGV by
-	  'IO.pipe; [].each.next' with gcc version 3.3.5 (Debian 1:3.3.5-13)
-	  on IA64.
-
-Thu Dec 13 17:51:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_split_m): need not to check encoding if regexp
-	  is empty.
-
-	* string.c (rb_str_justify): associate encoding of original to the
-	  result.
-
-	* string.c (rb_str_chomp_bang): need to check encoding of record
-	  separator.
-
-	* string.c (str_gsub): should copy encoding to the result.
-
-	* sprintf.c (rb_str_format): ditto.
-
-	* string.c (rb_str_succ): should not enter infinite loop for
-	  non-ASCII, non-alphanumeric character at the bottom.
-
-Thu Dec 13 17:03:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): should swap encoding indexes too.
-
-Thu Dec 13 16:41:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): should not judge compatibility
-	  based on rb_enc_asciicompat().
-
-Thu Dec 13 13:09:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/io.h (MakeOpenFile): fptr->enc should be
-	  initialized to zero.  [ruby-dev:32569]
-
-Thu Dec 13 08:56:01 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_getc): use default external encoding if fptr->enc is
-	  not set.  [ruby-dev:32565]
-
-	* lib/rubygems/package.rb (Gem::TarReader::Entry::rewind): typo fixed.
-	  [ruby-dev:32565]
-
-Thu Dec 13 08:24:16 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (read_all): should associate default external encoding.
-
-	* io.c (io_read): should NOT associate default external encoding.
-
-Wed Dec 12 23:22:58 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c, regerror.c, string.c, parse.y, ruby.c, file.c:
-	  use capital letter for \xHH notation.  [ruby-dev:32511]
-
-Wed Dec 12 22:21:34 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_mode_enc): allow specifying external encoding in
-	  open mode, e.g. open(path, "r:utf-8").
-
-Wed Dec 12 21:26:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_method.ci (rb_alias): no need to skip aliasing when new
-	  equals to old.  [ruby-core:13990]
-
-Wed Dec 12 16:34:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_check_readable): set default external encoding to
-	  STDIN.
-
-	* io.c (io_enc_str): associate encoding to output string.
-
-Wed Dec 12 12:44:39 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (expr): 'not' and '!' should act as conditional
-	  expression.   [ruby-dev:32548]
-
-Wed Dec 12 12:11:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_regsub): should copy encoding.
-
-	* string.c (rb_str_sub_bang, str_gsub): should check and copy encoding
-	  to be replaced.
-
-Tue Dec 11 23:04:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* pack.c (pack_pack): RDoc update.  a patch from Gary Wright
-	  <radar2002 AT gmail.com>.  [ruby-core:13998]
-
-	* pack.c (pack_unpack): ditto.
-
-Tue Dec 11 16:37:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_ascget): renamed from rb_enc_get_ascii.
-
-	* include/ruby/encoding.h: follow the renaming.
-
-	* re.c: ditto.
-
-Tue Dec 11 16:19:26 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, */Makefile.sub (CP, MV): added.
-
-	* common.mk (.y.c): not discard the old target until successfully
-	  created.
-
-Tue Dec 11 15:20:39 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (Init_Object): singleton_method_{added,removed,undefined}
-	  hooks should be defined for BasicObject.  [ruby-dev:32531]
-
-	* eval.c (Init_eval): method_missing should be defined for all
-	  objects; moved to BasicObject.
-
-Tue Dec 11 14:27:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (transcode_loop): get rid of SEGV at sequence can not be
-	  converted.
-
-	* transcode.c (rb_str_transcode_bang): copy encoding.  [ruby-dev:32532]
-
-	* test/ruby/test_transcode.rb: added tests from Martin Duerst <duerst
-	  AT it.aoyama.ac.jp>.  [ruby-dev:32532]
-
-Tue Dec 11 12:05:51 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_get_ascii): add an argument to provide the
-	  length of the returned character.
-
-	* include/ruby/encoding.h (rb_enc_get_ascii): add the argument.
-
-	* re.c (rb_reg_expr_str): modify rb_enc_get_ascii call.
-	  (rb_reg_quote): ditto.
-	  (rb_reg_regsub): ditto.
-
-Tue Dec 11 09:40:21 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/oniguruma.h (ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE):
-	  parenthesize an argument.
-
-Tue Dec 11 02:23:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_method_missing): RDoc update patch from Hugh Sasse
-	  <hgs AT dmu.ac.uk>.  [ruby-core:12932]
-
-Tue Dec 11 01:51:34 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP::get): now supports gzip
-	  content-encoding.  a patch from Hugh Sasse <hgs AT dmu.ac.uk>.
-	  [ruby-core:13451]
-
-Tue Dec 11 01:21:21 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (shadowing_lvar_gen): no duplicate error for "_".
-
-Mon Dec 10 22:08:47 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* array.c (rb_ary_slice_bang): If an invalid range is given, do
-	  not raise an exception but return nil just like slice() does.
-
-Mon Dec 10 21:47:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* transcode.c (str_transcode): allow non-registered encodings.
-	  [ruby-dev:32520]
-
-Mon Dec 10 21:00:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_slice_bang): should return nil if position out
-	  of range.  a patch from Akinori MUSHA <knu AT iDaemons.org>.
-	  [ruby-dev:32518]
-
-Mon Dec 10 19:02:52 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_match): should calculate offset by converted
-	  operand.  [ruby-cvs:21416]
-
-Mon Dec 10 18:28:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/uri/common.rb (URI::REGEXP::PATTERN): typo in REG_NAME
-	  regular expression.  a patch from Ueda Satoshi
-	  <s-ueda AT livedoor.jp>.  [ruby-dev:32514]
-
-Mon Dec 10 17:46:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_tmp_new): creates hidden temporary buffer.
-
-	* transcode.c (transcoding): added a pointer to function to flush.
-
-	* transcode.c (transcode_loop): do not use string internal.
-	  [ruby-dev:32512]
-
-	* transcode.c (str_transcode): allow Encoding objects.
-
-	* transcode_data.h (BYTE_LOOKUP): use actual struct name.
-
-Mon Dec 10 16:52:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_insert): should not add length in bytes to index in
-	  chars.
-
-Mon Dec 10 14:33:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_public_send): rename invoke_method to public_send.
-	  it now invokes public method only no matter how it's called.
-
-Mon Dec 10 14:00:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* transcode.c: new file to provide encoding conversion features.
-	  code contributed by Martin Duerst.
-
-Mon Dec 10 13:50:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_search): return byte offset.  [ruby-dev:32452]
-
-	* re.c (rb_reg_match, rb_reg_match2, rb_reg_match_m): convert byte
-	  offset to char index.
-
-	* string.c (rb_str_index): return byte offset.  [ruby-dev:32472]
-
-	* string.c (rb_str_split_m): calculate in byte offset.
-
-Mon Dec 10 09:56:29 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_vm1_neq.rb, bm_vm1_not.rb: added.
-
-Mon Dec 10 07:48:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): wrong token was generated.  [ruby-dev:32498]
-
-	* object.c (rb_obj_not_match): wrong test.
-
-Mon Dec 10 06:44:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_expr_str): use \xHH instead of \OOO.
-
-	* regerror.c (to_ascii): ditto.
-	  (onig_snprintf_with_pattern): ditto.
-	  (onig_snprintf_with_pattern): ditto.
-
-	* string.c (rb_str_inspect): ditto.
-	  (rb_str_dump): ditto.
-
-	* parse.y (parser_yylex): ditto.
-
-	* ruby.c (proc_options): ditto.
-
-	* file.c (rb_f_test): ditto.
-
-	[ruby-dev:32495]
-
-Mon Dec 10 06:41:00 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_names): new method Regexp#names.
-	  (rb_reg_named_captures): new method Regexp#named_captures
-	  (match_regexp): new method MatchData#regexp.
-	  (match_names): new method MatchData#names.
-
-	* lib/pp.rb (MatchData#pretty_print): show names of named captures.
-
-	[ruby-dev:32493]
-
-Mon Dec 10 01:35:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (expr): redefinable not (!) operator.
-
-	* parse.y (arg): ditto.
-
-	* object.c (rb_obj_not): new method "!".
-
-	* object.c (rb_obj_not_equal): new method "!=".
-
-	* object.c (rb_obj_not_match): new method "!~".
-
-Sun Dec  9 22:31:36 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_s_last_match): accept named capture's name.
-
-Sun Dec  9 15:57:53 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (match_backref_number): new function for converting a backref
-	  name/number to an integer.
-	  (match_offset): use match_backref_number.
-	  (match_begin): ditto.
-	  (match_end): ditto.
-	  (name_to_backref_number): raise IndexError instead of RuntimeError.
-	  (match_inspect): show capture index.
-
-Sun Dec  9 14:59:15 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval_intern.h (CHECK_STACK_OVERFLOW): reserve frame size.
-	  [ruby-dev:32485]
-
-Sun Dec  9 14:38:25 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (rb_thread_mark): use rb_gc_mark_maybe() for
-	  VM stack specified by mark_stack_len.  [ruby-dev:32462]
-
-	* insnhelper.ci: clear vm stack extended by opt value.
-
-Sun Dec  9 14:08:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (FilePathStringValue): defined.  similar to
-	  FilePathValue but no taint check.
-
-	* file.c (rb_get_path_no_checksafe): implementation of
-	  FilePathStringValue.
-	  (rb_file_s_basename): use FilePathStringValue.
-	  (rb_file_s_dirname): ditto.
-	  (rb_file_s_extname): ditto.
-	  (rb_file_s_split): ditto.
-	  (rb_file_join): ditto.
-
-	* dir.c (file_s_fnmatch): ditto.
-
-Sun Dec  9 12:49:34 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (append_utf8): check unicode range.
-
-Sun Dec  9 12:39:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/cgi.rb (read_multipart): exclude blanks from header values.
-	  [ruby-list:44327]
-
-Sun Dec  9 12:18:19 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_get_path): use the original object if to_path method is
-	  not defined.  [ruby-dev:32473]
-
-	* io.c (rb_f_open): call to_open on non-string objects, instead of
-	  to_str.  [ruby-dev:32473]
-
-Sun Dec  9 12:12:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_find): returns true if no characters to be removed is
-	  specified.
-
-Sun Dec  9 12:03:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_magic_comment): delimits with a semicolon.
-
-Sun Dec  9 11:29:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (tr_trans): get rid of segfaults when has multibytes but
-	  source sets have no multibytes.
-
-Sun Dec  9 04:01:28 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_mbclen): return 1 if underlying implementation
-	  returns a length longer than e-p.
-	  (rb_enc_precise_mbclen): return needmore if underlying
-	  implementation returns a length longer than e-p.
-
-Sat Dec  8 17:59:40 2007  Tanaka Akira  <akr@fsij.org>
-
-	* signal.c (posix_signal): return value.
-
-Sat Dec  8 17:22:16 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* test/openssl/test_pkcs7.rb: Remove redundant module namespace.
-
-Sat Dec  8 17:07:10 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c (proc_options): make rb_raise format as a string literal to
-	  avoid warning.
-
-Sat Dec  8 16:18:16 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_check_preprocess): new function for validating regexp
-	  fragment.
-
-	* parse.y (regexp): invoke reg_fragment_check.
-	  (reg_fragment_check): defined.
-	  (reg_fragment_check_gen): defined.
-
-Sat Dec  8 11:06:29 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_mbclen): make it never fail.
-	  (rb_enc_nth): don't check the return value of rb_enc_mbclen.
-	  (rb_enc_strlen): ditto.
-	  (rb_enc_precise_mbclen): return needmore(1) if e <= p.
-	  (rb_enc_get_ascii): new function for extracting ASCII character.
-
-	* include/ruby/encoding.h (rb_enc_get_ascii): declared.
-
-	* include/ruby/regex.h (ismbchar): removed.
-
-	* re.c (rb_reg_expr_str): use rb_enc_get_ascii.
-	  (unescape_escaped_nonascii): use rb_enc_precise_mbclen to determine
-	  the termination of escaped non-ASCII character.
-	  (unescape_nonascii): use rb_enc_precise_mbclen.
-	  (rb_reg_quote): use rb_enc_get_ascii.
-	  (rb_reg_regsub): use rb_enc_get_ascii.
-
-	* string.c (rb_str_reverse) don't check the return value of
-	  rb_enc_mbclen.
-	  (rb_str_split_m): don't call rb_enc_mbclen with e <= p.
-
-	* parse.y (is_identchar): use ISASCII.
-	  (parser_ismbchar): removed.
-	  (parser_precise_mbclen): new macro.
-	  (parser_isascii): new macro.
-	  (parser_tokadd_mbchar): use parser_precise_mbclen to check invalid
-	  character precisely.
-	  (parser_tokadd_string): use parser_isascii.
-	  (parser_yylex): ditto.
-	  (is_special_global_name): don't call is_identchar with e <= p.
-	  (rb_enc_symname_p): ditto.
-
-	  [ruby-dev:32455]
-
-	* ext/tk/sample/tkextlib/vu/canvSticker2.rb: remove coding cookie
-	  because the encoding is not UTF-8.  [ruby-dev:32475]
-
-Fri Dec  7 20:21:35 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* ext/openssl/lib/net/ftptls.rb, ext/openssl/lib/net/telnets.rb:
-	  half-finished libraries are discontinued.
-
-Fri Dec  7 15:44:40 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb: use Hash for recursion check as inspect.
-
-Fri Dec  7 15:04:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (flatten): some performance improvements, based on a patch
-	  from Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-core:13877].
-	  [ruby-core:13851]
-
-	* thread.c (rb_exec_recursive): use Hash instead of Array for
-	  performance improvement.  [ruby-core:13898]
-
-	* thread.c (recursive_pop): use object ID.
-
-Thu Dec  6 19:52:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): typo fixed ("!" -> "|") in the ripper code.
-
-Thu Dec  6 19:48:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (arg): tUPLUS no longer works as identity operation any
-	  more.  inspired by [ruby-talk:265532].
-
-Thu Dec  6 18:22:11 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_precise_mbclen): new function for mbclen with
-	  validation.
-
-	* include/ruby/encoding.h (rb_enc_precise_mbclen): declared.
-	  (MBCLEN_CHARFOUND): new macro.
-	  (MBCLEN_INVALID): new macro.
-	  (MBCLEN_NEEDMORE): new macro.
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): replace mbc_enc_len
-	  by precise_mbc_enc_len.
-	  (ONIGENC_PRECISE_MBC_ENC_LEN): new macro.
-	  (ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND): new macro.
-	  (ONIGENC_CONSTRUCT_MBCLEN_INVALID): new macro.
-	  (ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE): new macro.
-	  (ONIGENC_MBCLEN_CHARFOUND): new macro.
-	  (ONIGENC_MBCLEN_INVALID): new macro.
-	  (ONIGENC_MBCLEN_NEEDMORE): new macro.
-	  (ONIGENC_MBC_ENC_LEN): use ONIGENC_PRECISE_MBC_ENC_LEN.
-
-	* enc/euc_jp.c: validation implemented.
-
-	* enc/sjis.c: ditto.
-
-	* enc/utf8.c: ditto.
-
-	* string.c (rb_str_inspect): use rb_enc_precise_mbclen for invalid
-	  encoding.
-	  (rb_str_valid_encoding_p): new method String#valid_encoding?.
-
-	* io.c (rb_io_getc): use rb_enc_precise_mbclen.
-
-	[ruby-dev:32438]
-
-Thu Dec  6 01:37:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* regparse.c (i_apply_case_fold): fix for negative character class.  a
-	  patch from Yusuke ENDOH <mame AT tsg.ne.jp> in [ruby-core:13884].
-
-Thu Dec  6 01:00:38 2007  NARUSE, Yui <naruse@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_s_list): support NetBSD/Citrus iconv.
-
-Wed Dec  5 16:18:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_proc_s_new): call initialize.  [ruby-core:13824]
-
-	* proc.c (rb_proc_location): return file name and line number where
-	  the proc is defined.
-
-	* thread.c (thread_s_new): call initialize.  [ruby-core:13835]
-
-	* thread.c (thread_initialize): split initialize method.
-
-Wed Dec  5 15:25:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_intern3): fix to changing encoding to default, and
-	  uncommented r13835, which is rare but not impossible.
-
-Wed Dec  5 15:15:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (step_i, range_step): support non-fixnum steps.
-	  [ruby-talk:282100]
-
-Wed Dec  5 14:25:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): fix typo.
-
-Wed Dec  5 13:41:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (yycompile): get rid of tracing while parsing.
-	  [ruby-dev:31351]
-
-	* thread.c (ruby_suppress_tracing): added a new parameter, which
-	  directs to call func always.
-
-Tue Dec  4 19:56:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_convert): should not set encoding unless
-	  the target encoding is supported.  [ruby-dev:32451]
-
-Tue Dec  4 17:34:17 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/nkf/lib/kconv.rb (tojis, tosjis, toeuc, toutf8):
-	  set encoding. [ruby-dev:32447]
-
-Tue Dec  4 17:07:25 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/json.rb, lib/json/*: moved to ext/json/lib.
-
-Tue Dec  4 16:34:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (iconv_create): achieve target encoding.
-
-	* ext/iconv/iconv.c (iconv_convert, iconv_finish, iconv_iconv,
-	  iconv_conv): set result string encoding.  [ruby-dev:32446]
-
-	* ext/iconv/iconv.c (iconv_initialize, iconv_s_open): set encoding to
-	  Iconv instance.
-
-Tue Dec  4 14:34:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): reverted c flag.
-
-Tue Dec  4 11:23:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (rb_cstr_to_inum): trailing spaces may exist at squeezing
-	  preceding 0s.  [ruby-core:13873]
-
-Mon Dec  3 11:51:53 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/Win32API/*: removed or moved to ext/dl/win32.
-
-	* ext/dl/win32/*: new. [ruby-dev:32387]
-
-Sun Dec  2 22:08:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_tokadd_mbchar): fix for ASCII chars.  [ruby-dev:32432]
-
-	* parse.y (parser_parse_string, parser_here_document): prevent false
-	  error messages.
-
-Sun Dec  2 20:43:22 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (unescape_escaped_nonascii): fix mbclen argument.
-
-Sun Dec  2 15:47:57 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_tokadd_mbchar): check insufficient multibyte char.
-	  [ruby-dev:32429]
-
-Sun Dec  2 15:42:16 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, test/rss/test_version.rb: 0.2.1 -> 0.2.2.
-
-	* lib/rss/maker/itunes.rb: fixed new_itunes_category.
-	* lib/rss/maker/taxonomy.rb: new_taxo_topic -> new_topic because
-	  of consistency.
-
-	* test/rss/test_maker_itunes.rb, test/rss/test_itunes.rb: removed
-	  needless UTF-8 characters.
-
-Sun Dec  2 15:18:37 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_callee_setup_arg): fix error message.
-	  [ruby-dev:32430]
-
-Sun Dec  2 09:12:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* parse.y (regexp): fix /#{}\xa1\xa2/e to be EUC-JP.
-	  (reg_fragment_setenc_gen): extracted from reg_compile_gen.
-
-Sun Dec  2 01:39:51 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h (rb_uv_to_utf8): declared.
-
-	* re.c (rb_reg_preprocess): new function for dynamic regexp with
-	  \u{} such as Regexp.new("\\u{6666}").
-	  (rb_reg_prepare_re): preprocess regexp for recompiling.
-	  (read_escaped_byte): new function.
-	  (unescape_escaped_nonascii): new function.
-	  (append_utf8): new function.
-	  (unescape_unicode_list): new function.
-	  (unescape_unicode_bmp): new function.
-	  (unescape_nonascii): new function.
-	  (rb_reg_initialize): preprocess regexp.
-
-	* pack.c (rb_uv_to_utf8): renamed from uv_to_utf8.
-
-	* parse.y (STR_NEW3): take func instead of has8 and hasmb.
-	  (parser_str_new): use default coderange mechanism except for regexp.
-	  (parser_tokadd_utf8): copy regexp source as-is.
-	  (parser_read_escape): UTF-8 stuff removed.
-	  (parser_tokadd_escape): has8bit and hasmb removed.
-	  (parser_tokadd_string): fix 8-bit single byte character with \u.
-	  (parser_parse_string): has8bit and hasmb removed.
-	  (parser_here_document): has8bit and hasmb removed.
-	  (parser_yylex): call parser_tokadd_utf8 instead of read_escape for
-	  UTF-8 character.
-
-Wed Dec  2 01:00:07 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/server.rb (XMLRPC::Server#server): Improve signal handling so
-	  pressing control-c in the controlling terminal or sending SIGTERM stops
-	  the XML-RPC server.
-
-Sat Dec  1 23:04:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c: rename primary_encoding -> default_external (encoding).
-
-Sat Dec  1 19:52:57 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date.rb (Time#to_datetime): use nsec instead of usec.
-
-	* lib/date.rb (DateTime#to_time): second minute as an argument to
-	  Time::utc contains fractional part in rational; hence Time
-	  object may keep resolution at most nanosecond.
-
-Sat Dec  1 14:36:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: move fixed bugs.
-
-	* test/ruby/test_sprintf.rb: ditto.
-
-	* test/yaml/test_yaml.rb: ditto.
-
-Sat Dec  1 13:24:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_yield_with_cfunc): fix to passing argc on third
-	  parameter of IFUNC.  [ruby-dev:32329]
-
-	* enumerator.c: fix to pass exact number of argument.
-
-	* eval.c (rb_yield_values2): added.
-
-	* include/ruby/ruby.h: ditto.
-
-	* bootstraptest/test_knownbug.rb: move a fixed test.
-
-	* bootstraptest/test_block.rb: ditto.
-
-Sat Dec  1 10:45:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_f_open): use to_open for every non-string object.  path
-	  object may use method_missing.
-
-Sat Dec  1 09:44:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insns.def (concatarray, splatarray): use to_a instead of
-	  to_splat.
-
-	* insnhelper.ci (caller_setup_args): ditto.
-
-Sat Dec  1 03:34:32 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (newline_node): always remove NODE_BEGIN.
-
-Fri Nov 30 23:48:07 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (ruby_signal): use SA_SIGINFO if available.
-	  [ ruby-Patches-6418 ]
-
-Fri Nov 30 22:52:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* signal.c (trap_signm): SIGVTALRM no longer used for green
-	  thread.  [ruby-talk:281318]
-
-	* signal.c (ruby_sig_finalize): do not install SIG_DFL handler if
-	  previous handler is sighandler().
-
-Fri Nov 30 21:02:15 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/json.rb, lib/json/add/{core.rb, rails.rb},
-	  test/json/test_json_rails.rb: additional files of JSON 1.1.2.
-	  [ruby-dev:32405]
-
-Fri Nov 30 19:33:38 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/syck/rubyext.c (rb_syck_mktime): avoid segmentation fault.
-	  [ruby-core:13735]
-
-Fri Nov 30 19:05:55 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_count): precise argument number check.
-
-	* enum.c (enum_count): return Enumerator if no block given.
-
-Fri Nov 30 16:42:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_take_while): returns Enumerator if no block given.
-
-	* enum.c (enum_drop_while): ditto.
-
-Thu Nov 29 16:59:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (stmt): remove unnecessary NODE_BEGIN.  [ruby-core:13814]
-
-Thu Nov 29 06:45:48 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_eql): recursive comparison should be based on
-	  eql?  [ruby-core:13803]
-
-Wed Nov 28 18:08:00 2007  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/json, lib/json, test/json: Update to JSON 1.1.2.
-	  (RubyForge#15447)
-
-	* math.c: fix typo.
-
-Wed Nov 28 16:29:35 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_invoke_block): should splat args.
-	  [ruby-dev:32392]
-
-	* test/ruby/test_yield.rb: add tests for above.
-
-Wed Nov 28 14:43:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/extmk.rb (extract_makefile): use dldflags instead of DLDFLAGS to
-	  get rid of mixing $LDFLAGS and $ARCH_FLAG.
-
-	* lib/mkmf.rb (configuration): ditto.
-
-	* lib/mkmf.rb (create_makefile): support for extensions which has no
-	  shared object.
-
-Wed Nov 28 02:42:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* bignum.c (big2str_find_n1): removed extraneous element.
-	  [ruby-dev:32351], [ruby-dev:32365]
-
-	* bignum.c (big2str_find_n1): returns necessary digits now.
-
-	* sprintf.c (remove_sign_bits): extends sign bit first.
-
-Tue Nov 27 15:53:43 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): "when *[],1" dumps core.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32350]
-
-	* bootstraptest/test_syntax.rb: add a test for above.
-
-Tue Nov 27 15:40:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_compile_each): "a[*b] += 1" dumps core.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32354]
-
-	* bootstraptest/test_syntax.rb: add a test for above.
-
-Tue Nov 27 12:47:23 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c, insns.def: change return value of "defined?"
-	  for $&, $1, ... .  If such variables are defined,
-	  return "global-variable".
-
-	* test/ruby/test_defined.rb: add tests.
-
-	* bootstraptest/test_syntax.rb: fix a test.
-
-Tue Nov 27 11:54:46 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def: fix typo.
-
-Tue Nov 27 11:23:20 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test_beginendblock.rb: add loop to wait signal.
-	  [ruby-dev:32332]
-
-Tue Nov 27 11:14:57 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h, encoding.c, re.c, string.c, parse.y:
-	  rename ENC_CODERANGE_SINGLE to ENC_CODERANGE_7BIT.
-	  rename ENC_CODERANGE_MULTI to ENC_CODERANGE_8BIT.
-	  Because single byte 8bit character, such as Shift_JIS 1byte katakana,
-	  is represented by ENC_CODERANGE_MULTI even if it is not multi byte.
-
-Tue Nov 27 10:45:45 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (rb_method_missing): fix stack trace.
-
-	* bootstraptest/test_knownbug.rb: move solved tests.
-
-	* bootstraptest/test_method.rb, test/ruby/test_regexp.rb: ditto.
-
-Tue Nov 27 09:57:42 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def, compile.c: fix to allow dsym for alias/undef.
-	  [ruby-dev:32355]
-
-	* bootstraptest/test_method.rb: add tests for above.
-
-Mon Nov 26 23:18:46 2007  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/extserv.rb (initialize, stop_service): synchronize with
-	  ExtServManager.
-
-	* test/drb/test_drb.rb (TestDRbEval): ignored.
-
-Mon Nov 26 17:32:16 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (Init_Regexp): new method Regexp#fixed_encoding?
-	  [ruby-dev:32361]
-
-Mon Nov 26 13:28:14 2007  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/complex.rb: be able to create Complex(0, -0.0). [ruby-list:44268]
-
-Mon Nov 26 11:24:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_fixed_encoding_p): extracted from rb_reg_prepare_re and
-	  rb_reg_s_union.
-	  (rb_reg_s_union): refactored.
-
-Mon Nov 26 10:44:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_read_internal, rb_sysopen_internal): remove C99 dependency.
-
-Sun Nov 25 22:21:35 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/encoding.h (rb_enc_str_asciionly_p): declared.
-	  (rb_enc_str_asciicompat_p): defined.
-
-	* re.c (rb_reg_initialize_str): use rb_enc_str_asciionly_p.
-	  (rb_reg_quote): return ascii-8bit string if the argument is
-	  ascii-only to generate encoding generic regexp if possible.
-	  (rb_reg_s_union): fix encoding handling.  [ruby-dev:32094]
-
-	* string.c (rb_enc_str_asciionly_p): defined.
-
-Sun Nov 25 12:12:03 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* gem_prelude.rb: Import fast-loading gem_prelude.rb from RubyGems.
-
-	* lib/rubygems*: Import RubyGems r1516.
-
-Sat Nov 24 23:25:52 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_eval.rb (TestEval::test_instance_eval_cvar):
-	  updated not to modify class variable of Object class.
-
-Fri Nov 23 17:34:24 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* io.c: add rb_read_internal() as blocking function.
-
-Fri Nov 23 17:33:39 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: fix comment.
-
-Fri Nov 23 17:26:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: move solved tests.
-
-	* bootstraptest/test_io.rb, test_marshal.rb, test_objectspace.rb:
-	  ditto.
-
-	* test/ruby/test_integer.rb, test_regexp.rb: ditto.
-
-Fri Nov 23 15:59:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* struct.c (rb_struct_alloc_noinit): new function.
-	  (rb_struct_define_without_accessor): add allocator to the arguments.
-
-	* range.c (range_alloc): re-introduced using rb_struct_alloc_noinit.
-
-Fri Nov 23 15:27:43 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (REG_CASESTATE): unused macro removed.
-	  (rb_reg_prepare_re): check encoding difference.
-	  (rb_reg_initialize): check 8bit byte.
-
-	* parse.y (parser_tokadd_escape): fix has8bit.
-
-	  [ruby-dev:32113]
-
-Fri Nov 23 15:16:48 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_f_global_variables): variable names should not
-	  duplicate.  [ruby-dev:32344]
-
-Fri Nov 23 13:34:08 2007  Tanaka Akira  <akr@fsij.org>
-
-	* struct.c (rb_struct_define_without_accessor): new function.
-
-	* range.c (range_alloc): removed.
-	  (Init_Range): use rb_struct_define_without_accessor.
-
-	  based on [ruby-dev:32327].
-
-Fri Nov 23 11:01:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (match_begin): should return offset by character.
-	  [ruby-dev:32331]
-
-	* re.c (match_end): ditto.
-
-	* re.c (rb_reg_search): ditto.
-
-Fri Nov 23 10:44:24 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* compile.c (defined_expr): defined(method(x)) dumped core.  a
-	  patch from Yusuke ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32335]
-
-Wed Nov 21 18:03:49 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c: fix to recycle thread data (VM stack).
-
-	* thread.c: ditto.
-
-	* benchmark/bm_vm3_thread_create_join.rb: add loop count.
-
-Wed Nov 21 18:02:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: add path to trunk/lib if driver runner is
-	  in build directory.
-
-Wed Nov 21 16:39:21 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/fileutils/fileasserts.rb (assert_equal_timestamp): new assert
-	  to test tv_sec only for filestamp resolution portability.
-	  (assert_same_entry): use assert_same_entry for mtime comparison.
-
-Wed Nov 21 14:55:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* array.c (rb_ary_permutation): add gc guard codes.
-
-Wed Nov 21 11:16:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insnhelper.ci (vm_search_normal_superclass): rename function.
-
-	* insnhelper.ci (vm_search_superclass): ditto.
-
-	* proc.c (struct METHOD): rename rklass -> rclass.
-
-Wed Nov 21 03:12:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* process.c (rb_f_system): returns nil on execution failure.
-	  [ruby-core:13715]
-
-Wed Nov 21 01:04:12 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (nil_plus): remove unused function.  [ruby-core:13737]
-
-Tue Nov 20 21:46:46 2007  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_mload): ignore invalid digits in submicro.
-
-Tue Nov 20 20:33:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h: rename RFloat#double_value -> float_value.
-
-	* numeric.c, parse.y: ditto.
-
-Tue Nov 20 19:36:21 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.h, vm_core.h: decl of rb_gc_save_machine_context()
-	  should be at vm_core.h.
-
-	* include/ruby/ruby.h, intern.h: remove type rb_thread_t.
-
-	* include/ruby/intern.h: change rb_unblock_function_t,
-	  rb_unblock_function_t.
-
-	* file.c, process.c: apply above changes.
-
-	* thread.c, thread_pthread.ci, thread_win32.ci: ditto.
-
-	* io.c: support blocking open (2). [ruby-core:13614]
-
-Tue Nov 20 17:10:11 2007  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_close_on_exec_p): new method IO#close_on_exec?.
-	  (rb_io_set_close_on_exec): new method IO#close_on_exec=.
-	  [ruby-dev:32323]
-
-Tue Nov 20 16:24:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (gc_mark_children): obj->as.file.fptr may be 0 for T_FILE.
-
-Tue Nov 20 15:09:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_read_escape): has8bit flag may be set with control
-	  escape.  [ruby-core:13722]
-
-	* parse.y (parser_prepare): set begging after BOM if exists.
-	  [ruby-core:13718]
-
-Tue Nov 20 14:55:37 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems*: Update to RubyGems 0.9.5.
-
-Tue Nov 20 13:00:44 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* include/ruby/win32.h win32/win32.c (rb_w32_pipe_exec): use dual fd
-	  instead of socketpair when mode is RDWR.
-
-	* io.c (pipe_open): pass &write_fd to rb_w32_pipe_exec().
-
-	* io.c (popen_redirect): define only when HAVE_FORK.
-
-Tue Nov 20 12:12:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/io.h (rb_io_t): add tied_io_for_writing member.
-
-	* io.c: use tied_io_for_writing for duplex popen.
-
-	* gc.c: mark tied_io_for_writing.
-
-	* common.mk: gc.o depends io.h.
-
-	  [ruby-dev:32205]
-
-Tue Nov 20 11:59:33 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/drb/test_drb.rb: rename TestRubyYield to TestDRbRubyYield to
-	  avoid name crash with test/ruby/test_yield.rb.
-	  TestRuby18Yield is renamed to TestDRbRuby18Yield too.
-
-Tue Nov 20 03:24:42 2007  Masatoshi SEKI  <m_seki@mva.biglobe.ne.jp>
-
-	* lib/drb/extservm.rb: merged from ruby_1_8 branch.
-
-	* lib/drb/acl.rb: ditto.
-
-	* lib/drb/ssl.rb: ditto.
-
-	* lib/drb/unix.rb: ditto.
-
-	* lib/drb/drb.rb: ditto.
-
-	* lib/drb/observer.rb: ditto.
-
-	* lib/drb/invokemethod.rb: ditto.
-
-	* test/drb/test_drbssl.rb: ditto.
-
-	* test/drb/test_drb.rb: ditto.
-
-	* test/drb/drbtest.rb: ditto.
-
-	* test/drb/test_drbunix.rb: ditto.
-
-Tue Nov 20 00:52:46 2007  Tanaka Akira  <akr@fsij.org>
-
-	* test/fileutils/fileasserts.rb (assert_equal_time): show nsec if
-	  assertion fails but time.to_s equals.
-	  (assert_same_entry): use assert_equal_time.
-
-	* test/fileutils/test_fileutils.rb (test_install): use
-	  assert_equal_time.
-
-Mon Nov 19 18:46:49 2007  Tanaka Akira  <akr@fsij.org>
-
-	* file.c (utime_internal): fallback utimensat to utimes.
-
-Mon Nov 19 17:51:27 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: check struct timespec, clock_gettime, utimensat,
-	  struct stat.st_atim,
-	  struct stat.st_atimespec,
-	  struct stat.st_atimensec,
-	  struct stat.st_mtim,
-	  struct stat.st_mtimespec,
-	  struct stat.st_mtimensec,
-	  struct stat.st_ctim,
-	  struct stat.st_ctimespec,
-	  struct stat.st_ctimensec.
-
-	* include/ruby/missing.h: provide struct timespec if not available.
-
-	* time.c: support nanosecond-resolution using struct timespec.
-	  (time_nsec): new method: Time#nsec and Time#tv_nsec.
-
-	* include/ruby/intern.h: provide rb_time_nano_new.
-
-	* file.c (utime_internal): use utimensat if available.
-	  (rb_file_s_utime): refactored.
-	  (rb_f_test): use stat_atime, stat_mtime, stat_ctime.
-	  (rb_stat_cmp): check tv_nsec.
-	  (stat_atimespec): new function.
-	  (stat_atime): ditto.
-	  (stat_mtimespec): ditto.
-	  (stat_mtime): ditto.
-	  (stat_ctimespec): ditto.
-	  (stat_ctime): ditto.
-	  (rb_stat_atime): use stat_atime.
-	  (rb_file_s_atime): ditto.
-	  (rb_file_atime): ditto.
-	  (rb_stat_mtime): use stat_mtime.
-	  (rb_file_s_mtime): ditto.
-	  (rb_file_mtime): ditto.
-	  (rb_file_ctime): use stat_ctime.
-	  (rb_file_s_ctime): ditto.
-	  (rb_stat_ctime): ditto.
-
-	* variable.c (rb_copy_generic_ivar): clear clone's instance variables
-	  if obj has no instance variable.
-
-	* marshal.c (w_object): dump instance variables of generated string
-	  for TYPE_USERDEF, even if original object has instance variables.
-
-	* lib/time.rb (Time#xmlschema): use nsec instead of usec.
-
-	[ruby-dev:32306]
-
-Mon Nov 19 17:48:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* object.c (rb_class_superclass): should not raise exception for
-	  BasicObject.  [ruby-Bugs-15668]
-
-Mon Nov 19 16:04:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_permutation): gives all permutations of elements
-	  if no argument given.  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.
-	  [ruby-dev:32309]
-
-Mon Nov 19 02:44:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): alias and undef accept dsyms as well
-	  as literals.  [ruby-dev:32308]
-
-Mon Nov 19 02:31:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (rb_add_method): no redefinition warning for undef.
-
-Mon Nov 19 01:53:11 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_read_escape): disallow control and meta modifiers
-	  for non-ASCII characters.  [ruby-core:13685]
-
-Sun Nov 18 20:47:41 2007  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (mark_dump_arg): it may be called after dump_ensure.
-
-Sun Nov 18 18:27:47 2007  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_minus): fix Time.at(2**60+1) - Time.at(2**60).
-
-Sun Nov 18 17:28:49 2007  Tanaka Akira  <akr@fsij.org>
-
-	* time.c (time_arg): show actual year in 2-3 digits year warning.
-	  (time_mdump): show actual year in "year too big to marshal" error.
-
-Sun Nov 18 14:03:44 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (rb_alias): do not call hook functions until
-	  initialization finishes.  [ruby-talk:279538]
-
-Sun Nov 18 09:09:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (String#tr_cpp): make preprocessor identifiers.
-
-Sun Nov 18 05:19:46 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/mkmf.rb (have_struct_member): define HAVE_type_member.
-
-Sat Nov 17 23:51:29 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_invoke): bug fix. [ruby-talk:279100]
-
-Sat Nov 17 23:21:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): should clear parser->tokp as well.
-	  [ruby-dev:32250]
-
-	* parse.y: remove NEED_ASSOC that break test_parser_events.
-
-	* parse.y (parser_yylex): should not decrement line numbers at the
-	  end of file.
-
-	* file.c (rb_find_file_ext): search .rb files first through in the
-	  loadpath.
-
-Fri Nov 16 23:31:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* bignum.c (rb_big_odd_p): new method added.  a patch from Tadashi
-	  Saito <shiba AT mail2.accsnet.ne.jp>.  [ruby-dev:32305]
-
-	* bignum.c (rb_big_even_p): ditto.
-
-Fri Nov 16 17:41:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/iconv/iconv.c (Document-class): moved the simplest example to
-	  the top.
-
-	* ext/iconv/iconv.c (iconv_s_iconv): Document-method: needs class
-	  prefix for class method.  [ruby-core:13542]
-
-	* ext/iconv/iconv.c (iconv_iconv): also instance method needs to be
-	  qualified.
-
-Fri Nov 16 16:26:57 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* include/ruby/ruby.h: added some declarations for event hooks.
-
-	* lib/profile.rb: set VM::InstructionSequence.compile_option.
-
-Fri Nov 16 11:16:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/yaml/rubytypes.rb (String#is_binary_data?): use Integer#fdiv.
-
-Fri Nov 16 03:36:01 2007  why the lucky stiff  <why@ruby-lang.org>
-
-	* ext/syck/rubyext.c: Node#value defined twice.
-
-	* lib/yaml/: several method redefinitions causing warnings.
-
-Fri Nov 16 03:01:00 2007  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml/types.rb: Likewise, pass self to YAML::quick_emit.
-
-Fri Nov 16 02:51:59 2007  why the lucky stiff  <why@ruby-lang.org>
-
-	* lib/yaml.rb (quick_emit): use combination of object_id and hash to
-	  identify repeated object references, since GC will reuse memory of
-	  objects during output of YAML. [ruby-Bugs-8548] [ruby-Bugs-3698]
-
-Thu Nov 15 19:49:03 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/curses/extconf.rb: check macro if cannot find func.
-	  [ruby-list:44224]
-
-Thu Nov 15 18:04:06 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: fix TMP_RUBY_PREFIX for relative load path
-	  environment.
-
-Thu Nov 15 17:28:21 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: absolute path may not start with a slash.
-	  pointed by usa.
-
-Thu Nov 15 17:07:54 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: fix first substitution.
-	  use constant for prefix.
-	  pointed by Richard Kilmer.
-
-Thu Nov 15 14:29:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (prereq): added auto generated sources.  [ruby-dev:32280]
-
-Thu Nov 15 12:31:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: use constant for prefix.
-
-Thu Nov 15 12:24:39 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: use simple template system for source
-	  code generation.
-
-Thu Nov 15 12:19:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/cgi/session.rb (CGI::Session::FileStore::restore): use
-	  lockfile for exclusive locks.  a patch from <tommy AT tmtm.org>.
-	  [ruby-dev:32296]
-
-Thu Nov 15 12:14:53 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* tool/compile_prelude.rb (c_esc): need to escape closing brace.
-
-Thu Nov 15 11:52:16 2007  Tanaka Akira  <akr@fsij.org>
-
-	* tool/compile_prelude.rb: adjust RbConfig::CONFIG paths relative
-	  to the installation path.
-
-Thu Nov 15 11:25:20 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c (usage): fix typo on --disable-gems option.
-	  pointed by Richard Kilmer.
-
-Wed Nov 14 16:16:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/net/http/test_https_proxy.rb
-	  (HTTPSProxyTest::test_https_proxy_authentication): initialize
-	  local variable 't' first.  [ruby-dev:32253]
-
-Wed Nov 14 15:39:24 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/socket/test_socket.rb: update not to use 1.8 assignment to
-	  external local variable in the block parameters.  [ruby-dev:32251]
-
-	* test/strscan/test_stringscanner.rb: avoid $KCODE, and use
-	  String#force_encoding().  [ruby-dev:32251]
-
-Wed Nov 14 14:04:42 2007  Tanaka Akira  <akr@fsij.org>
-
-	* common.mk, Makefile.in: rename prelude.c to miniprelude.c.
-	  rename ext_prelude.c to prelude.c
-
-	* win32/Makefile.sub: ditto.
-
-	* bcc32/Makefile.sub: ditto.
-
-Wed Nov 14 07:09:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* blockinlining.c, compile.c, compile.h, debug.c, debug.h,
-	  id.c, insnhelper.h, insns.def, thread.c, thread_pthread.ci,
-	  thread_pthread.h, thread_win32.ci, thread_win32.h, vm.h,
-	  vm_dump.c, vm_evalbody.ci, vm_opts.h: fix comments and
-	  copyright year.
-
-Wed Nov 14 07:07:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* tool/makedocs.rb, template/insnstbl.html: removed.
-
-Wed Nov 14 02:50:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.c): dependency also needs vpath.
-
-	* common.mk (node_name.inc, prelude.c): VPATH in nmake does not
-	  work for targets of explicit rules.
-
-Wed Nov 14 02:11:38 2007  Tanaka Akira  <akr@fsij.org>
-
-	* missing/isinf.c (isinf): don't define if the macro is defined.
-
-	* configure.in: no need to set ac_cv_func_isinf=yes on non-gcc
-	  solaris.
-
-Wed Nov 14 01:34:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (round): fallback definition.
-
-	* numeric.c (flo_divmod, flo_round): use round() always.
-	  [ruby-dev:32269]
-
-Wed Nov 14 00:33:49 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* include/ruby/ruby.h: introduce 2 macros:
-	  RFLOAT_VALUE(v), DOUBLE2NUM(dbl).
-	  Rename RFloat#value -> RFloat#double_value.
-	  Do not touch RFloat#double_value directly.
-
-	* bignum.c, insns.def, marshal.c, math.c, numeric.c, object.c,
-	  pack.c, parse.y, process.c, random.c, sprintf.c, string.c,
-	  time.c: apply above changes.
-
-	* ext/dl/mkcallback.rb, ext/json/ext/generator/generator.c:
-	  ditto.
-
-Wed Nov 14 00:15:37 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/ytab.sed: get rid of GNU sed feature.  a patch from Laurent
-	  Sansonetti <laurent.sansonetti AT gmail.com> in [ruby-core:13470].
-
-Tue Nov 13 21:41:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (parse.c), ext/ripper/depend (ripper.c): process after
-	  bison with sed.  [ruby-dev:32204]
-
-	* ruby.c (proc_options): use yydebug in cmdline_options.
-
-	* ruby.c (process_options): set yydebug flag of parser.
-
-	* parse.y (yydebug): moved into struct parser_params.
-
-	* parse.y (rb_parser_get_yydebug, rb_parser_set_yydebug): parser
-	  generic methods.
-
-	* */Makefile.sub (parse.c): moved to common.mk.
-
-	* tool/ytab.sed: comment out yydebug definition, and substitute
-	  yyerror with parser_yyerror.
-
-Tue Nov 13 16:33:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flodivmod): work around for infinity.
-
-	* numeric.c (flo_divmod): work around for platforms have no round().
-	  [ruby-dev:32247]
-
-Tue Nov 13 15:26:33 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lex.c.blt: moved from lex.c.
-
-	* lex.c.src: copied from keywords.  This is the source of lex.c.blt.
-
-	* Makefile.in (lex.c): use lex.c.blt if keywords is same as lex.c.src.
-
-	* win32/Makefile.sub (lex.c): re-introduce copy rule.
-
-	* bcc32/Makefile.sub (lex.c): ditto.
-
-	* wince/Makefile.sub (lex.c): ditto.
-
-Tue Nov 13 15:21:52 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (iseq_specialized_instruction): check argc.
-
-Tue Nov 13 14:44:32 2007  why the lucky stiff  <why@ruby-lang.org>
-
-	* test/yaml/test_yaml.rb: fixed the failing YAML Struct test
-	  at ko1's request.
-
-Tue Nov 13 02:57:04 2007  URABE Shyouhei  <shyouhei@ice.uec.ac.jp>
-
-	* numeric.c (flo_divmod): round to the nearest integer.
-	  [ ruby-Bugs-14540 ]
-
-Tue Nov 13 00:36:16 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* test/ruby/test_settracefunc.rb: fixed tests for set_trace_func.
-
-Mon Nov 12 19:47:29 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* thread.c (call_trace_proc): should return value.
-
-Mon Nov 12 19:45:18 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (miniruby): use $(COMMONOBJS) and $(DMYEXT)
-	  instead of $(LIBRUBY_A).
-
-Mon Nov 12 18:32:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc,win}32/Makefile.sub (MINIOBJS): added prelude.$(OBJEXT).
-
-Mon Nov 12 17:13:23 2007  Tanaka Akira  <akr@fsij.org>
-
-	* Makefile.in, common.mk: add prelude.o to MINIOBJS.
-
-Mon Nov 12 16:52:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (create_makefile): rdoc about srcprefix.  a patch from
-	  Daniel Berger <djberg96 AT gmail.com> in [ruby-core:13378].
-
-Mon Nov 12 16:48:09 2007  Tanaka Akira  <akr@fsij.org>
-
-	* Makefile.in, common.mk: add ext_prelude.o to OBJS.
-
-Mon Nov 12 13:57:39 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (MINIDLNOBJS): removed.
-	  (MINIOBJS): set to dln.o if dmydln.o is not used.
-
-	* Makefile.in (miniruby): use MINIOBJS instead of MINIDLNOBJS.
-
-Mon Nov 12 13:53:06 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* misc/ruby-mode.el (ruby-parse-partial): handle stringified
-	  symbols properly using ruby-forward-string.
-
-Mon Nov 12 12:17:59 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in (MINIDLNOBJS): defined.
-
-	* Makefile.in (miniruby): use MINIDLNOBJS and COMMONOBJS instead of
-	  MINIOBJS and OBJS to avoid linking both dmydln.o and dln.o.
-
-Sun Nov 11 20:32:45 2007  Tanaka Akira  <akr@fsij.org>
-
-	* {win32,wince,bcc32}/Makefile.sub: delete lex.c rule.
-
-Sun Nov 11 19:40:52 2007  Tanaka Akira  <akr@fsij.org>
-
-	* Makefile.in (lex.c): simplified.
-
-Sun Nov 11 18:31:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* Makefile.in (lex.c): touch lex.c if gperf failed but lex.c exists.
-	  Although this may cause non-updated lex.c,
-	  svn co may generate keywords newer than lex.c especially on
-	  a file system which can record fractional mtime such as XFS.
-
-Sun Nov 11 17:32:46 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* insnhelper.ci (vm_call_method): pass mn->nd_clss to
-	  vm_call_cfunc() instead of klass.
-
-	* vm.c (rb_thread_method_id_and_klass): traverse parent_iseq.
-
-	* thread.c (call_trace_proc): use rb_thread_method_id_and_klass().
-
-Sun Nov 11 16:54:25 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lex.c: renamed from lex.c.blt.
-
-	* Makefile.in (lex.c): use find command to check mtime.
-
-Sun Nov 11 05:34:13 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* bin/gem: Add forgotten gem command.
-
-Sat Nov 10 23:50:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* string.c (tr_trans): cast to unsigned char after dereference
-	  a pointer to a char to avoid SEGV with "\377".tr("a", "b").
-	  on FreeBSD/amd64.
-
-Sat Nov 10 23:08:53 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in, common.mk, Makefile.in: don't generate
-	  libminiruby-static.a.
-
-Sat Nov 10 19:46:54 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in, common.mk, Makefile.in: generate libminiruby-static.a
-	  which contains prelude.o for miniruby.
-
-Sat Nov 10 18:10:07 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gem_prelude.rb: new file for gem libraries.  currently empty.
-
-	* common.mk: generate ext_prelude.c by prelude.rb and gem_prelude.rb.
-	  ruby (not miniruby) is linked with ext_prelude.o instead of
-	  prelude.o.
-
-	* inits.c (rb_call_inits): don't call Init_prelude.
-
-	* ruby.c: support --disable-gems option.
-	  (ruby_init_gems): new function to define Gem::Enable and
-	  invoke Init_prelude.
-	  (process_options): call ruby_init_gems just after
-	  ruby_init_loadpath.
-
-	* tool/compile_prelude.rb: support multiple files.
-
-Sat Nov 10 17:27:55 2007  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* thread.c (call_trace_proc): don't call ID2SYM() for ID_ALLOCATOR
-	  to avoid SEGV.
-
-Sat Nov 10 16:37:07 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems: Import RubyGems revision 1493.
-
-	* lib/rubygems.rb: ditto.
-
-	* lib/ubygems.rb: ditto.
-
-	* lib/rbconfig/datadir.rb: ditto.
-
-	* test/rubygems: ditto.
-
-Sat Nov 10 16:34:21 2007  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/soap/property.rb: Don't override Enumerable#inject for 1.9.
-
-Sat Nov 10 14:43:30 2007  David Flanagan  <davidflanagan@ruby-lang.org>
-
-	* parse.y: use ASCII encoding for string literals that are
-	  7-bit clean, fixing regression from my previous patch
-
-Sat Nov 10 13:18:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc32,win32}/Makefile.sub: vendor_ruby support.
-
-Fri Nov  9 23:33:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_nextc): added single line read forward buffer.
-
-	* parse.y (parser_yylex): adjust line number for fluent interface.
-
-Fri Nov  9 22:04:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm.h (FRAME_MAGIC_MASK_BITS): bits of FRAME_MAGIC_MASK.
-
-	* insnhelper.ci (vm_call_cfunc, vm_cfunc_flags): use shift operations.
-
-Fri Nov  9 21:46:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (eval): should be volatile value for GC.
-
-Fri Nov  9 17:48:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (locale_encoding): guesstimate encoding from environment
-	  variables.  [ruby-core:13315]
-
-	* ruby.c (process_options): set primary encoding from environment.
-
-Fri Nov  9 16:51:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_each_byte): should update rbuf_off and rbuf_len for
-	  each iteration.  [ruby-dev:31659][ruby-dev:32192]
-
-	* variable.c (rb_cvar_set): cvar assignment obey same rule to cvar
-	  reference.  [ruby-dev:32192]
-
-Fri Nov  9 15:52:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_check_encoding, rb_set_primary_encoding): ENCODING
-	  is no longer in FL_USERS flags.
-
-Fri Nov  9 15:20:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_squeeze_bang): initialize squeezing table if no
-	  arguments given.
-
-Fri Nov  9 13:57:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (each_with_index_i): use rb_yield_values() for
-	  compatibility with Enumerator#with_index().  a patch from Yusuke
-	  ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32195]
-
-Fri Nov  9 13:45:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_iterator.rb (TestIterator::IterTest::each):
-	  #each_pair is now alias to #each.  [ruby-dev:32192]
-
-	* test/ruby/test_iterator.rb (TestIterator::test_assoc_yield):
-	  ditto
-
-Fri Nov  9 12:56:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_load.c (loaded_feature_path): check with type of given feature.
-
-Fri Nov  9 12:43:02 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_basicinstructions.rb: updated for new class
-	  behavior.  [ruby-dev:32192]
-
-	* encoding.c (enc_name): Encoding should not rely on ENCODING in
-	  the FL_USERS flags.
-
-	* encoding.c (rb_enc_from_encoding): do not call rb_enc_associate
-	  for encoding itself.
-
-	* encoding.c (enc_register_at): ditto.
-
-	* marshal.c (r_ivar): do not set real instance variable for
-	  encoding data associated.
-
-Fri Nov  9 10:43:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (send_internal): use self in the previous frame to check for
-	  protected methods.  [ruby-core:13254]
-
-	* insnhelper.ci (vm_call_method): send! method has gone.
-
-Fri Nov  9 10:38:13 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* marshal.c (w_object): should be SPECIAL_CONST_P() instead of
-	  IMMEDIATE_P().
-
-Fri Nov  9 10:29:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_invoke_method): check if invoked in function style.
-	  [ruby-core:13245]
-
-	* insnhelper.ci (vm_call_cfunc, vm_cfunc_flags): stores and returns VM
-	  calling flags.
-
-	* vm.c (rb_vm_cfunc_funcall_p): returns if the current method is
-	  invoked in function style.
-
-Fri Nov  9 10:10:21 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: add rb_context_t#type.
-
-Fri Nov  9 10:05:54 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ruby.c (set_arg0): fix breaking environ bugs.
-
-Fri Nov  9 07:26:04 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* random.c: update MT URL.[ruby-core:13305].
-
-Thu Nov  8 17:09:55 2007  David Flanagan  <davidflanagan@ruby-lang.org>
-
-	* object.c: improve docs for Object.tap
-
-	* ChangeLog: fix bogus dates on my previous entries
-
-Thu Nov  8 15:13:56 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* parse.y: fix segfault with \x escapes in regexps
-	  delete unused #if 0 code regions from previous patch
-
-Thu Nov  8 12:12:10 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_read_escape): remove C99/gcc-ism.
-
-Thu Nov  8 07:54:22 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* parse.y: patch, based on Nobu's, work to support \u escapes
-	           also modifications for better coderange detection
-
-	* test/ruby/test_unicode_escapes.rb: test cases
-
-	* test/ruby/test_mixed_unicode_escapes.rb: mixed encoding test cases
-
-Thu Nov  8 07:14:37 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* parse.y (rb_intern3): commented out broken code that prevented
-	  correct interning of multi-byte symbols.  Without this patch
-	  :x==:x is false when x is a multi-byte character.
-
-Thu Nov  8 07:04:31 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* string.c (tr_setup_table, tr_trans): fix test failures
-	  in test/ruby/test_string.rb
-
-Wed Nov  7 15:07:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enum.c (enum_each_with_index): make different arrays at each
-	  iteration.  [ruby-dev:32181]
-
-Wed Nov  7 05:17:24 2007  David Flanagan <davidflanagan@ruby-lang.org>
-
-	* eval.c: fix typo in invoke_method documentation
-
-Wed Nov  7 03:52:26 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_product): core dumped with non array arguments.
-	  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.  [ruby-dev:32180]
-
-Wed Nov  7 03:32:38 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/encodings/SHIFT-JIS.rb (REXML::Encoding): place -x for
-	  nkf conversion.  a patch from <moonwolf AT moonwolf.com>.
-	  [ruby-dev:32183]
-
-Wed Nov  7 02:59:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_each_index): should return meaningful value.
-
-Tue Nov  6 16:37:47 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_load.c (loaded_feature_path): need to expand relative paths.
-
-	* eval_load.c (rb_feature_p): check if the feature is loading with
-	  load path.  [ruby-dev:31932]
-
-	* eval_load.c (load_lock): check the result of barrier waiting.
-
-	* thread.c (rb_barrier_wait): check if owned by the current thread.
-
-	* thread.c (rb_barrier_release): ditto.
-
-Mon Nov  5 08:01:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (Init_eval): move #send to Kernel module from BasicObject.
-
-Mon Nov  5 05:17:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::Switch::summarize): fix for long form
-	  option with very long argument.  a patch from Kobayashi Noritada
-	  <nori1 AT dolphin.c.u-tokyo.ac.jp> in [ruby-list:44179].
-
-Mon Nov  5 01:20:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (call_args): remove "parenthesize argument(s) for future
-	  version" warning.  when I added this warning, I had a plan to
-	  reimplement the parser that is simpler than the current one.
-	  since we abandoned the plan, warning no longer required.
-
-Mon Nov  5 01:02:56 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTPHeader#initialize): provide default
-	  User-Agent to fix 500 error on some corrupted HTTP servers.
-	  [ruby-core:13135]
-
-Mon Nov  5 00:32:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_f_send): allow send/__send__ to call methods of all
-	  visibility again.  we no longer provide __send, __send!.
-
-	* eval.c (rb_invoke_method): new method to honor private
-	  visibility.  if it's invoked in a function call style, it calls
-	  private methods as well (previous 1.9 send behavior).
-
-Mon Nov  5 00:24:24 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub: vendor_ruby support.
-
-	* configure.in (RUBY_LIB): duplicated.
-
-Mon Nov  5 00:01:33 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_quote): quote \v as well.
-
-Sun Nov  4 23:51:59 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_initialize_m): use StringValuePtr instead of
-	  StringValueCStr because \0 exists when Regexp.new("\0").
-
-Sun Nov  4 08:11:19 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (count_objects): count TOTAL.
-
-Sun Nov  4 03:58:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_setup_table): use C array for characters that fit
-	  in a byte to gain performance.
-
-	* string.c (rb_str_delete_bang): ditto.
-
-	* string.c (rb_str_squeeze_bang): ditto.
-
-	* string.c (rb_str_count): ditto.
-
-	* string.c (tr_trans): ditto.
-
-Sun Nov  4 00:06:40 2007  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (count_objects): ObjectSpace.count_objects implemented.
-	  [ruby-core:12301]
-
-Sat Nov  3 22:49:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (rb_hash_each_pair): make Hash#each to be alias to
-	  Hash#each_pair for compatibility and clarity.
-
-	* hash.c (env_each_pair): ditto.
-
-Sat Nov  3 22:41:05 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: --with-vendor-hdrdir implemented.
-
-	* lib/mkmf.rb: check --vendor argument.
-
-	* README.EXT: explain --vendor option for extconf.rb
-
-	* README.EXT.ja: ditto.
-
-Sat Nov  3 20:30:48 2007  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: --with-vendordir implemented.
-
-	* mkconfig.rb: add config to vendorlibdir and vendorarchdir.
-
-	* instruby.rb: make vendor library directories.
-
-	* ruby.c: insert vendor library directories into load path.
-
-Fri Nov  2 20:55:49 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/content.rb, lib/rss/content/, lib/rss/maker/content.rb,
-	  test/rss/test_content.rb, test/rss/test_maker_content.rb,
-	  test/rss/rss-testcase.rb (RSS::TestCase): supported
-	  content:encoded with RSS 2.0.
-	  Suggested by Sam Lown. Thanks.
-
-Fri Nov  2 20:47:04 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss/rss.rb, test/rss/test_version.rb: 0.2.0 -> 0.2.1.
-
-Thu Nov  1 21:56:45 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* error.c (Init_Exception): make NameError to be subclass of
-	  StandardError again.
-
-	* error.c (Init_Exception): make SecurityError to be subclass of
-	  Exception, since it's too important to be handled implicitly.
-
-Thu Nov  1 14:51:39 2007 David Flanagan <davidflanagan@ruby-lang.org>
-	* enum.c (take_while_i, drop_while_i) add RTEST to handle nil return
-
-Thu Nov  1 02:12:50 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* common.mk (prereq): update the path of prelude.c.
-
-	* common.mk (prelude.c): rollback a part of r13675, because it is not
-	  documented and causes build error.
-
-Thu Nov  1 01:52:23 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* enum.c (enum_drop): fix typo.
-
-Thu Nov  1 01:51:01 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_core.h (ruby_current_thread): RUBY_EXTERN'ed for probeprofiler.
-
-Thu Nov  1 00:46:30 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/configure.bat, setup.mak: now can recognize OS even if
-	  the ``--target'' option of configure is omitted.
-
-	* win32/README.win32: update the descriptions about compiler.
-
-Wed Oct 31 03:13:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_take_while): separate with-block form.
-
-	* enum.c (drop_while_i): ditto.
-
-	* enum.c (enum_butfirst): abandon butfirst method.  reverted.
-
-Tue Oct 30 10:03:43 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_butfirst): add a new method to iterates over
-	  elements but first n.  RDoc need to be updated.
-
-	* enumerator.c (Init_Enumerator): remove unnecessary symbol
-	  initialization.
-
-Mon Oct 29 18:42:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (bvar): block-local variable can shadow outer variable.
-	  [ruby-core:13036]
-
-Mon Oct 29 17:58:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_substr): performance improvement.  [ruby-dev:31806]
-
-Mon Oct 29 17:20:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_replicate): new function to replicate encoding.
-
-	* encoding.c (enc_based_encoding): Encoding#base_encoding returns
-	  based encoding of replica.
-
-Mon Oct 29 17:18:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_compatible): ASCII encoding is compatible with
-	  ASCII-compatible encoding, even for non-string objects.
-
-Sun Oct 28 21:50:02 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb: :redirect option implemented to disable redirects.
-	  (OpenURI::HTTPRedirect): new exception class for redirection.
-
-Fri Oct 26 17:38:13 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (int_chr): take an optional encoding parameter.
-	  [ruby-core:12816]
-
-Fri Oct 26 17:14:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (fix_pow): returns 1.0 for 0**0.0.
-
-	* numeric.c (fix_pow): returns infinity for 0**-1.  [ruby-dev:32084]
-
-Fri Oct 26 15:00:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-{case,label}-indent): adjust for
-	  labels inside switch block.
-
-Fri Oct 26 05:48:57 2007  David Flanagan <davidflanagan@ruby-lang.org>
-	* array.c: raise IndexError for negative length in rb_ary_fill
-
-Wed Oct 25 07:12:03 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb (Net::Telnet#login): Allowing "passphrase" in
-	  addition to "password" for Telnet login prompts. [ruby-Bugs-10746]
-
-Wed Oct 25 06:34:11 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/net/telnet.rb (Net::Telnet#login): Making the password prompt
-	  pattern case insensitive. [ruby-Bugs-10746]
-
-Fri Oct 26 04:21:36 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/net/pop.rb (Net::POP3::do_start): type fixed.  a patch from
-	  Dan Zwell <dzwell AT zwell.net> in [ruby-core:12941].
-
-Fri Oct 26 01:48:28 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_assoc): check and convert inner arrays (assocs)
-	  using #to_ary.
-
-	* hash.c (rb_hash_s_create): check and convert argument hash
-	  using #to_hash.
-
-	* hash.c (rb_hash_s_create): Hash#[] now takes assocs as source of
-	  hash conversion.
-
-Thu Oct 25 16:46:05 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y (parser_yylex): dot at the head of the line denote line
-	  continuation from previous one to support fluent interface.
-	  [experimental]
-
-	* misc/ruby-mode.el (ruby-calculate-indent): support fluent dot.
-
-Thu Oct 25 14:19:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_tell, rb_io_seek): check errno too.  [ruby-dev:32093]
-
-Thu Oct 25 13:59:53 2007 David Flanagan <davidflanagan@ruby-lang.org>
-
-	* parse.y (parser_tokspace): increment tokidx
-	  fixes test failure at [test/ruby/test_stringchar.rb:72]
-
-Thu Oct 25 09:49:49 2007  akira yamada  <akira@ruby-lang.org>
-
-	* lib/uri.rb, lib/uri/ldaps.rb: added LDAPS
-	  scheme. [ruby-dev:31896]
-
-Wed Oct 25 06:23:14 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/parser.rb (XMLRPC::Convert::dateTime): Fixing a bug that
-	  caused time zone conversion to fail for some ISO 8601 date formats.
-	  [ruby-Bugs-12677]
-
-Wed Oct 25 04:59:28 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/client.rb (XMLRPC::Client#do_rpc): Explicitly start
-	  the HTTP connection to support keepalive requests. [ruby-Bugs-9353]
-
-Wed Oct 25 04:46:53 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/client.rb (XMLRPC::Client#do_rpc): Improving the error
-	  message for Content-Type check failures. [ruby-core:12163]
-
-Wed Oct 25 03:45:08 2007  James Edward Gray II  <jeg2@ruby-lang.org>
-
-	* lib/xmlrpc/utils.rb (XMLRPC::ParseContentType#parse_content_type):
-	  Making Content-Type checks case insensitive. [ruby-Bugs-3367]
-
-Wed Oct 24 17:09:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_tokspace): make space in token buffer.
-
-	* parse.y (parser_yylex): fix encoding of single character literal.
-
-Tue Oct 23 13:44:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (call_args2): nd_head of NODE_BLOCK_PASS should be a list.
-	  [ruby-core:12850]
-
-Tue Oct 23 10:42:51 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): encoding set by command line option takes
-	  priority over the encoding in the source, as the primary encoding.
-
-Mon Oct 22 19:24:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): allow space after -E (encoding) option.
-
-Mon Oct 22 11:03:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (enc_check_encoding): returns index now.
-
-	* encoding.c (rb_enc_compatible): check if two objects have compatible
-	  encodings.
-
-	* encoding.c (enc_compatible_p): added Encoding.compatible?.
-
-	* include/ruby/encoding.h (rb_enc_compatible): prototype.
-
-Sun Oct 21 18:29:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_default, rb_enc_primary): return pointers to
-	  rb_encoding of default and primary respectively.  [ruby-core:12795]
-
-	* encoding.c (set_primary_encoding): removed primary_encoding setter.
-
-Sat Oct 20 13:17:01 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_cycle): hide temporary array from ObjectSpace.
-	  [ruby-core:12762]
-
-Sat Oct 20 11:49:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_get_path): returns frozen string.
-
-	* file.c (rb_file_s_chown, rb_file_s_lchown): use uid_t and gid_t.
-
-Fri Oct 19 20:08:14 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_id_encoding): returns ID "encoding".
-
-	* marshal.c (w_encoding): dump encoding name.
-
-	* marshal.c (r_ivar): load encoding.
-
-Fri Oct 19 16:41:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_regx_options, reg_compile_gen): relaxened encoding
-	  matching rule.
-
-	* re.c (rb_reg_initialize): always set encoding of Regexp.
-
-	* re.c (rb_reg_initialize_str): fix encoding for non 7bit-clean
-	  strings.
-
-	* re.c (rb_reg_initialize_m): use ascii encoding for 'n' option.
-
-Fri Oct 19 11:09:56 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (process_options): set primary encoding from the parser
-	  always.  [ruby-core:12758]
-
-	* ruby.c (load_file): should not discard the parser parameter.
-
-Fri Oct 19 10:55:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* range.c (range_last): removed unused variables.
-
-Thu Oct 18 17:08:57 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_find_index): update RDoc.  a patch from David Flanagan
-	  <david AT davidflanagan.com> in [ruby-core:12710].
-
-	* enum.c (enum_take, enum_drop): ditto.
-
-	* enum.c (enum_cycle): should not cause infinite loop for empty
-	  arrays.  [ruby-core:12710]
-
-	* range.c (Init_Range): typo fixed.
-
-Thu Oct 18 16:39:34 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/source.rb (REXML::SourceFactory::SourceFactory): more
-	  duck typed.  better performance on JRuby.
-	  http://headius.blogspot.com/2007/10/another-performance-discovery-rexml.html
-
-Thu Oct 18 09:33:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_first): takes first n element if argument is
-	  given.  [ruby-core:12697]
-
-	* range.c (range_last): returns last n elements if argument is
-	  given.
-
-	* array.c (rb_ary_subseq, rb_ary_last): export.
-
-Wed Oct 17 17:39:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (proc_options): fixed reversed condition.  [ruby-core:12722]
-
-Wed Oct 17 13:54:28 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_s_union): the last check was not complete.
-
-Wed Oct 17 11:30:55 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_from_encoding, rb_enc_register): associate index
-	  to self.
-
-	* encoding.c (enc_capable): Encoding objects are encoding capable.
-
-	* re.c (rb_reg_s_union): check if encoding matching by exact encoding
-	  objects.
-
-Wed Oct 17 06:18:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_alias, rb_enc_find_index): changed
-	  enc_table_alias to a name-to-index hash.
-
-	* encoding.c (rb_enc_init): use upper case names for aliases to use as
-	  constant names.
-
-	* encoding.c (enc_find): allow symbols.
-
-	* encoding.c (Init_Encoding): define encoding constants.
-
-	* st.c (strcasehash): fix wrong code range condition.
-
-Wed Oct 17 05:07:18 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_primary_encoding): added Encoding.primary_encoding.
-
-	* parse.y (rb_parser_encoding): added.
-
-	* ruby.c (proc_options): added -E and --encoding options.
-
-	* ruby.c (process_options): set primary encoding from command line
-	  option if set, or source encoding.
-
-	* include/ruby/encoding.h (rb_enc_from_encoding,
-	  rb_get_primary_encoding, rb_set_primary_encoding): prototypes.
-
-	* include/ruby/node.h (rb_parser_encoding): prototype.
-
-Wed Oct 17 03:37:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_desc): set encoding.
-
-	* re.c (rb_reg_s_union): check encodings.
-
-	* enc/utf8.c (utf8_code_to_mbclen): 0xfe and 0xff are valid Unicode to
-	  be encoded to 2bytes in UTF-8.  [ruby-core:12700]
-
-Wed Oct 17 02:50:49 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_ord): use encoding.
-
-Wed Oct 17 01:57:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_initialize_m): allow binary encoding option.
-	  [ruby-dev:32083]
-
-Tue Oct 16 19:48:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (rb_reg_s_union): check for encoding of original object.
-
-Tue Oct 16 18:28:51 2007  Tanaka Akira  <akr@fsij.org>
-
-	* debug.c: use enum for constants for gdb if possible.
-
-Tue Oct 16 18:20:10 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c, debug.c: move debug enum and constants to debug.c.
-
-Tue Oct 16 18:16:15 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ruby.c (RUBY_ENCODING_SHIFT): added as enum.
-
-	* .gdbinit (rp): show encoding and coderange for strings.
-
-Tue Oct 16 14:48:38 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_regx_options): check if regexp encoding option
-	  matches to current encoding.
-
-	* re.c (char_to_option, rb_char_to_option_kcode): 'n' is not kcode
-	  option now.
-
-	* re.c (rb_reg_to_s, rb_reg_error_desc): copy encoding rather than
-	  append as an option.
-
-	* re.c (make_regexp, rb_reg_prepare_re): use encoding of Regexp and
-	  String instead of kcode.
-
-	* re.c (rb_reg_initialize): set fixed option if none is set.
-
-	* re.c (rb_reg_regcomp): ditto.
-
-	* re.c (rb_reg_equal): check if encodings are equal.
-
-	* re.c (rb_reg_initialize_m): encoding option is obsolete.
-
-	* re.c (rb_kcode, rb_get_kcode, rb_set_kcode): removed.
-
-	* re.c (Init_Regexp): removed Regexp#kcode method.
-
-	* ruby.c (proc_options): allow long encoding name.
-
-Tue Oct 16 14:03:09 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_s_union): encoding of all regexp objects should
-	  match.  [ruby-dev:32076]
-
-Tue Oct 16 13:49:41 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (enc_to_s): rename function.
-
-Tue Oct 16 13:25:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_new4): should copy encoding.  a patch from NARUSE,
-	  Yui <naruse AT airemix.com>.  [ruby-dev:32076]
-
-Tue Oct 16 01:31:23 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* enum.c (enum_inject): RDoc update.  a patch from David Flanagan
-	  <david AT davidflanagan.com> in [ruby-core:12710].
-
-Tue Oct 16 01:25:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (Init_Encoding): define #to_s to show encoding name
-	  in to_s representation as well as #inspect.
-
-Mon Oct 15 13:24:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (flo_round): should be number but not rounding factor.
-	  [ruby-dev:32060]
-
-Mon Oct 15 11:45:12 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_bytes0): refined length check.  [ruby-dev:32059]
-
-Mon Oct 15 10:24:19 2007  Tanaka Akira  <akr@fsij.org>
-
-	* process.c (pst_to_s): returns a string such as "pid 10220 exit 1"
-	  instead of "256".  [ruby-dev:32053]
-	  (pst_inspect): change format
-	  "#<Process::Status: pid=10220,exited(1)>" to
-	  "#<Process::Status: pid 10220 exit 1>".
-
-Mon Oct 15 09:58:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* marshal.c (r_bytes0): check if source has enough data.
-	  [ruby-dev:32054]
-
-Mon Oct 15 01:15:09 2007  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (s_accept_nonblock): make accepted fd
-	  nonblocking.  [ruby-talk:274079]
-
-Sun Oct 14 17:31:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_obj_encoding): rdoc update.  a patch from David
-	  Flanagan <david AT davidflanagan.com>.  [ruby-core:12664]
-
-	* encoding.c (enc_dump, enc_load): marshaling feature.  a patch from
-	  David Flanagan.  [ruby-core:12665]
-
-	* encoding.c (Init_Encoding): undefine allocator of Encoding.
-	  [ruby-core:12665], [ruby-core:12666]
-
-	* test/ruby/test_encoding.rb: tests for Encoding from David Flanagan
-	  [ruby-core:12665]
-
-Sun Oct 14 11:09:09 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/pp.rb (PP::PPMethods#pp_hash): don't sort keys because hash is
-	  ordered.
-	  (ENV.pretty_print): call pp_hash with sorted hash.
-
-Sun Oct 14 04:08:34 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (AC_SYS_LARGEFILE): keep results also in command
-	  options, to vail out of mismatch.  [ruby-list:44114]
-
-	* mkconfig.rb, lib/mkmf.rb (configuration): add DEFS.
-
-Sun Oct 14 03:55:52 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/mkexports.rb: deal with __fastcall name decorations.
-	  [ruby-list:44111]
-
-Sun Oct 14 02:20:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_cEncoding): new Encoding class.
-
-	* encoding.c (rb_to_encoding, rb_to_encoding_index): helper functions.
-
-	* encoding.c (rb_obj_encoding): return Encoding object now.
-
-	* gc.c (garbage_collect): mark Encoding objects.
-
-	* inits.c (rb_call_inits): call Init_Encoding.
-
-	* string.c (rb_str_force_encoding): accept Encoding object as well as
-	  encoding name.
-
-	* include/ruby/encoding.h (rb_to_encoding_index, rb_to_encoding):
-	  prototypes.
-
-Sun Oct 14 01:03:30 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb (OpenURI.open_http): fix :ssl_ca_cert option.
-
-Sat Oct 13 21:23:21 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (foletype_s_ole_classes,
-	  foletype_s_typelibs): refactoring.
-
-	* test/win32ole/test_win32ole_type.rb: add some test.
-
-	* ext/win32ole/win32ole.c (Init_win32ole): change method name
-	  WIN32OLE_TYPELIB.ole_types from WIN32OLE_TYPELIB.ole_classes.
-
-	* test/win32ole/test_win32ole_typelib.rb: ditto.
-
-	* test/win32ole/test_folderitem2_invokeverb.rb: check create
-	  shortcut string more strictly (This test is invoked in Japanese
-	  Windows environment).
-
-Sat Oct 13 09:11:58 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (set_file_encoding): case-insensitive search, a patch from
-	  David Flanagan <david AT davidflanagan.com> [ruby-core:12629]
-
-Sat Oct 13 09:02:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* {bcc,win}32/mkexports.rb: explicit data.  [ruby-list:44108]
-
-Sat Oct 13 00:17:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/rexml/document.rb (REXML::Document::write): leaky
-	  modification trans -> transitive.  [ruby-dev:32040]
-
-Sat Oct 13 00:00:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* parse.y: encoding specifier should work if the line matches
-	  /coding[:=] ?/, a la Python PEP-263, so that VIM comments like
-	  "# vim: set fileencoding=<encoding name>" should be recognized.
-
-Fri Oct 12 15:04:54 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (magic_comments): add "encoding" as same as "coding".
-
-	* parse.y (set_file_encoding): special file encoding handling.
-
-	* parse.y (parser_yylex): ditto.
-
-Fri Oct 12 12:44:11 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_combination): fixed memory corruption due to too
-	  small memory allocation
-
-	* array.c (rb_ary_product): accessing out of memory bounds.
-	  condition fixed.
-
-Fri Oct 12 11:22:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (match_values_at): make #select to be alias to #values_at
-	  to adapt RDoc description.  [ruby-core:12588]
-
-Thu Oct 11 21:10:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/node.h (NOEX_LOCAL): remove unused local visibility.
-
-	* class.c (ins_methods_push): ditto.
-
-	* class.c (rb_class_local_methods): method removed.
-
-Thu Oct 11 14:29:31 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* */Makefile.sub (COMMON_MACROS): workaround for old SDK's bug.
-	  [ruby-core:12584]
-
-Thu Oct 11 06:35:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in, */Makefile.sub (VPATH): add enc directory.
-
-	* common.mk (ENCOBJS): encoding objects.
-
-	* enc: directory for encodings.
-
-Thu Oct 11 00:04:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add OnigEncoding
-	  parameter to every function members.
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add auxiliary
-	  data member to provide user defined data for an encoding.
-
-Wed Oct 10 23:32:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_s_quote): no longer takes optional second argument
-	  that has never been documented.
-
-Wed Oct 10 15:39:04 2007  Tanaka Akira  <akr@fsij.org>
-
-	* encoding.c (rb_enc_init): don't alias iso-8859-1 to ascii.
-
-	* ascii.c (OnigEncodingASCII): change the name US-ASCII to ASCII-8BIT.
-
-Wed Oct 10 14:31:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_enc_str_coderange): fixed check for non-ascii.
-
-Tue Oct  9 21:35:28 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_permutation, rb_ary_combination): missing type
-	  names.
-
-	* array.c (rb_ary_permutation): used buffer should be t1.
-
-	* array.c (rb_ary_permutation): use frozen shared hidden array.
-	  [ruby-dev:31985]
-
-Tue Oct  9 16:58:10 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c: remove to_a completely.
-
-	* array.c (tmpbuf): keep DRY to clear klass of temporary objects.
-
-Tue Oct  9 16:33:32 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_permutation, rb_ary_combination, rb_ary_product):
-	  hide internal buffer objects.  [ruby-dev:31982]
-
-Tue Oct  9 16:00:32 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y (parser_read_escape, parser_tokadd_escape): check code range.
-	  [ruby-dev:31980]
-
-Tue Oct  9 15:40:24 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (STR_NEW3): check for if single byte sequence.
-
-Mon Oct  8 20:06:29 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/imap.rb, lib/net/smtp.rb, lib/net/pop.rb: hostname should
-	  be verified against server's identity as presented in the server's
-	  certificate. [ruby-dev:31960]
-
-	* ext/openssl/lib/net/telnets.rb, ext/openssl/lib/net/ftptls.rb: ditto.
-
-Sun Oct  7 22:37:47 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* test/rss/test_taxonomy.rb, test/rss/test_parser_1.0.rb,
-	  test/rss/test_image.rb, test/rss/rss-testcase.rb: ensured
-	  declaring XML namespaces.
-
-Sun Oct  7 22:00:01 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/node.h: make node flags as VALUE type.
-	  enum ruby_node_flags removed.
-
-	* ruby.c: define RUBY_NODE_* as const for gdb.
-
-Sun Oct  7 18:57:12 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h: enum ruby_value_flags removed.  [ruby-dev:31959]
-
-	* ruby.c: define RUBY_FL_* as const VALUE for gdb.
-
-Sun Oct  7 17:50:14 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/http.rb: remove enable_post_connection_check flag.
-
-	* lib/open-uri.rb: ditto.
-
-Sun Oct  7 15:48:40 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insns.def (opt_eq): fix to use rb_str_equal().
-
-Sat Oct  6 23:14:54 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_to_i): update RDoc since base can be any value
-	  between 2 and 36.  [ruby-talk:272879]
-
-Sat Oct  6 16:24:02 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c (cont_free): check Fiber or Continuation.
-
-	* bootstraptest/test_knownbug.rb: remove a fixed test.
-
-Sat Oct  6 14:56:02 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_register): returns new index or -1 if failed.
-
-	* encoding.c (rb_enc_alias): check if original name is registered.
-
-	* encoding.c (rb_enc_init): register in same order as kcode options in
-	  re.c.  added new aliases.
-
-	* string.c (rb_str_force_encoding): check if valid encoding name.
-
-Sat Oct  6 14:32:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (opt_eq): get rid of gcc bug.
-
-Sat Oct  6 02:34:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/defines.h: no longer provide DEFAULT_KCODE.
-
-Fri Oct  5 21:24:59 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (rb_reg_s_union_m): Regexp.union accepts single argument which
-	  is an array of patterns.  [ruby-list:44084]
-
-Fri Oct  5 16:42:27 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_not_match): new method.
-
-Fri Oct  5 16:15:52 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* configure.in: Turn on --enable-pthread by default for FreeBSD
-	  5.2.1-RELEASE and later, and remove pthread support for older
-	  versions which has never worked perfectly.
-
-Fri Oct  5 16:11:50 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* time.c (time_to_s): Fix documentation.  Time format changed.
-
-Fri Oct  5 04:02:39 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb (in_addr, in6_addr, addr_mask): Make some minor
-	  code optimization.
-
-Fri Oct  5 03:25:51 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb (<=>): Implement IPAddr#<=> and make IPAddr
-	  comparable.
-
-	* lib/ipaddr.rb (succ): Implement IPAddr#succ.  You can now create
-	  a range between two IPAddr's, which (Range) object is
-	  enumerable.
-
-	* lib/ipaddr.rb (to_range): A new method to create a Range object
-	  for the (network) address.
-
-Fri Oct  5 03:14:45 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/ipaddr.rb (coerce_other): Support type coercion and make &,
-	  |, == and include? accept a string or an integer instead of an
-	  IPAddr object as the argument.
-
-	* lib/ipaddr.rb (initialize): Give better error messages.
-
-	* lib/ipaddr.rb: Improve documentation.
-
-Thu Oct  4 20:45:53 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* process.c (Init_process): win32 has our own WNOHANG definition, so
-	  remove unnecessary #ifdef guard.
-
-Thu Oct  4 20:17:19 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* array.c (rb_ary_permutation, rb_ary_product): support non C99
-	  compilers.
-
-Thu Oct  4 17:33:18 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (kcode_setter): Perl-ish global variable `$=' no longer
-	  effective.
-
-	* io.c (Init_IO): remove obsolete variables: $defout, $deferr.
-
-	* re.c (Init_Regexp): remove obsolete const alias: MatchingData.
-
-	* time.c (Init_Time): remove obsolete Time::times.
-
-	* re.c (ignorecase_setter): change warning message.
-
-	* re.c (ignorecase_getter): now gives warning.
-
-	* string.c (rb_str_cmp_m): update RDoc document.
-
-	* re.c (kcode_setter): restore erroneously removed setter.
-
-Thu Oct  4 16:28:33 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_obj_encoding): returns encoding of the given object.
-
-	* parse.y (reg_compile_gen): copy encoding from source string if
-	  non-empty.
-
-	* re.c (Init_Regexp): new method Regexp#encoding.
-
-	* string.c (str_encoding): moved to encoding.c
-
-Thu Oct  4 15:49:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_permutation): remove C99 dependency.
-	  [ruby-dev:31934]
-
-	* array.c (rb_ary_product): ditto.
-
-Wed Oct  3 23:37:17 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/nkf/nkf.c, bin/ri, bin/irb: fixed typos in doc and comments.
-	  a patch from Eugene Ossintsev  <eugoss AT gmail.com>.
-	  [ruby-core:12375]
-
-Wed Oct  3 17:56:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: enable specify label to executable.
-	  (-e "ruby1::/path/to/ruby1; ruby2::/path/to/ruby2; ...")
-
-Wed Oct  3 16:58:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_str_new, parser_yylex, rb_intern3): set code-range
-	  bits.
-
-	* parse.y (parser_tokadd_string): check code-range.
-
-	* parse.y (parser_parse_string, parser_here_document): ditto.
-
-	* parse.y (parser_set_encode): check if valid encoding.
-
-Wed Oct  3 15:43:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* variable.c (rb_cvar_set): check whether class variable is
-	  defined in superclasses.  root classes have higher priority.
-	  removes lower class variable entry from IV_TBL (if it's defined
-	  in classes, not modules).
-
-	* variable.c (rb_cvar_get): ditto.
-
-Wed Oct  3 10:06:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (ruby_process_options): push frame with program name.
-	  [ruby-core:12351]
-
-Tue Oct  2 20:16:55 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (init_env): refactoring. remove unused code.
-
-Tue Oct  2 12:30:40 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_product): generalized product, now takes
-	  arbitrary number of arrays.  a patch from David Flanagan
-	  <david AT davidflanagan.com>.  [ruby-core:12346]
-
-Tue Oct  2 08:25:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_permutation): implementation contributed from
-	  David Flanagan.  [ruby-core:12344]
-
-	* array.c (rb_ary_combination): RDoc update to clarify.  a patch
-	  from David Flanagan.  [ruby-core:12344]
-
-	* array.c (rb_ary_permutation): small dirty hack by Matz to avoid
-	  arrays on stack.
-
-Tue Oct  2 07:01:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* proc.c (proc_dup): proc->block.proc should be self.
-
-	* bootstraptest/test_knownbug.rb, test_method.rb:
-	  move a fixed test.
-
-Mon Oct  1 16:17:44 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/test_method.rb: use assert_normal_exit to test
-	  [ruby-dev:31818].
-
-Mon Oct  1 15:57:49 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (id2ref): skip ICLASS.
-
-Mon Oct  1 15:29:35 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_normal_exit): use `` instead of
-	  system.
-
-Mon Oct  1 15:17:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (id2ref): T_VALUES is less than T_BLOCK.  [ruby-dev:31911]
-
-Mon Oct  1 10:58:42 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (require_libraries): use require method instead of calling
-	  rb_require directly.  [ruby-dev:31322]
-
-Mon Oct  1 10:52:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (ruby_options), ruby.c (proc_options, process_options): not
-	  call exit(2) directly.  [ruby-dev:31912]
-
-	* eval.c (ruby_run_node): deal with direct exit code.
-
-Sun Sep 30 17:12:53 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_append): always set encoding, and coderange
-	  cache bits.
-
-	* include/ruby/encoding.h (ENC_CODERANGE_SET): fixed a bug not to
-	  set cache bits.
-
-Sun Sep 30 11:52:11 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (pretty): don't show beginning empty line.
-
-Sun Sep 30 11:32:34 2007  Tanaka Akira  <akr@fsij.org>
-
-	* numeric.c: use #ifdef for test LONG_LONG_VALUE.
-
-Sun Sep 30 04:30:55 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c: use SIZEOF_LONG instead of SIZEOF_ULONG which is not
-	  defined.
-
-Sun Sep 30 04:03:43 2007  Tanaka Akira  <akr@fsij.org>
-
-	* re.c (Init_Regexp): test DEFAULT_KCODE in C code because
-	  KCODE_EUC, etc. are enum.
-
-Sun Sep 30 00:55:40 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* variable.c (obj_ivar_each): get rid of warning.
-
-Sat Sep 29 17:45:22 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* main.c (main): use platform-independent per-process initialization.
-	  [ruby-dev:31900]
-
-	* ruby.c (ruby_sysinit): new function for per-process initialization.
-
-	* include/ruby/ruby.h (RUBY_GLOBAL_SETUP): toplevel setup declaration.
-
-	* include/ruby/win32.h, win32/mkexports.rb: alias NtInitialize
-	  ruby_sysinit.
-
-	* win32/win32.c (rb_w32_sysinit): renamed from NtInitialize.
-
-Sat Sep 29 17:31:04 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_combination): new method to give all combination
-	  of elements from an array.  [ruby-list:42671]
-
-	* array.c (rb_ary_product): a new method to get all combinations
-	  of elements from two arrays.  can be extended to combinations of
-	  n-arrays, e.g. a.product(b,c,d).  anyone volunteer?
-
-	* array.c (rb_ary_permutation): empty function body to calculate
-	  permutations of array elements.  need volunteer.
-
-Sat Sep 29 17:14:44 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_leave): move proc invocation from r_entry() to
-	  avoid potential crash.
-
-Sat Sep 29 12:28:08 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_normal_exit): new method.
-
-	* bootstraptest/test_knownbug.rb: add test for Marshal.load.
-
-Sat Sep 29 10:12:20 2007  Tanaka Akira  <akr@fsij.org>
-
-	* variable.c (rb_ivar_set): fix class instance variable.
-
-	* object.c (rb_class_real): cl argument may be 0.
-
-Sat Sep 29 09:12:02 2007  Tanaka Akira  <akr@fsij.org>
-
-	* object.c (rb_class_real): use BUILTIN_TYPE instead of TYPE.
-	  access flags directly instead of FL_TEST.
-	  they are enough because cl argument is a class.
-
-Sat Sep 29 08:57:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h (strcasecmp): needed for type_strcasehash.
-
-Sat Sep 29 06:47:29 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby.c (struct cmdline_options): static variables packed.
-
-Sat Sep 29 05:29:30 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_fdopen): create IO object from fd.
-
-	* parse.y (yycompile): use encoding of the source as default.
-
-	* ruby.c (proc_options, load_file): ditto.
-
-Sat Sep 29 04:27:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_alias): allow encodings multiple aliases.
-
-	* encoding.c (rb_enc_find_index): search the encoding which has the
-	  given name and return its index if found, or -1.
-
-	* st.c (type_strcasehash): case-insensitive string hash type.
-
-	* string.c (rb_str_force_encoding): force encoding of self.  this name
-	  comes from [ruby-dev:31894] by Martin Duerst.  [ruby-dev:31744]
-
-	* include/ruby/encoding.h (rb_enc_find_index, rb_enc_associate_index):
-	  prototyped.
-
-	* include/ruby/encoding.h (rb_enc_isctype): direct interface to ctype.
-
-	* include/ruby/st.h (st_init_strcasetable): prototyped.
-
-Sat Sep 29 03:53:26 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: Thread local storage should be fiber local.
-
-	* bootstraptest/test_knownbug.rb, test/ruby/test_fiber.rb:
-	  move a fixed test.
-
-Fri Sep 28 23:15:31 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* insnhelper.ci (vm_call_method): allow send! to call protected
-	  methods as well.  [ruby-core:12280]
-
-Fri Sep 28 22:33:47 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_so_fasta.rb: added.
-
-	* benchmark/bm_so_k_nucleotide.rb: added.
-
-	* benchmark/bm_so_reverse_complement.rb: added.
-
-	* benchmark/make_fasta_output.rb: added.
-
-	* benchmark/prepare_so_k_nucleotide.rb: added.
-
-	* benchmark/prepare_so_reverse_complement.rb: added.
-
-Fri Sep 28 19:14:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: fix notations.
-
-	* benchmark/bm_loop_whileloop.rb: ditto.
-
-	* benchmark/bm_loop_whileloop2.rb: ditto.
-
-	* benchmark/bm_app_uri.rb: added.
-
-	* benchmark/bm_vm1_ivar_set.rb: ditto.
-
-	* benchmark/bm_so_binary_trees.rb: added from Computer Language
-	  Benchmarks Game (http://shootout.alioth.debian.org/).
-
-	* benchmark/bm_so_fannkuch.rb: ditto.
-
-	* benchmark/bm_so_mandelbrot.rb: ditto.
-
-	* benchmark/bm_so_meteor_contest.rb: ditto.
-
-	* benchmark/bm_so_nbody.rb: ditto.
-
-	* benchmark/bm_so_nsieve.rb: ditto.
-
-	* benchmark/bm_so_nsieve_bits.rb: ditto.
-
-	* benchmark/bm_so_partial_sums.rb: ditto.
-
-	* benchmark/bm_so_pidigits.rb: ditto.
-
-	* benchmark/bm_so_spectralnorm.rb: ditto.
-
-Fri Sep 28 16:22:52 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* vm_core.h (rb_vm_struct): fix typo: bufferd -> buffered.
-
-Fri Sep 28 15:47:48 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: fix to output benchmark results
-	  to file "bmlog-#{Time.now.strftime('%Y%m%d-%H%M%S')}.#{$$}".
-
-	* benchmark/bm_io_file_create.rb: remove useless codes.
-
-	* benchmark/bm_vm2_eval.rb: added.
-
-Fri Sep 28 15:05:24 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h: export rb_ivar_foreach.
-
-	* include/ruby/ruby.h: modify struct RObject and RClass for optimizing
-	  T_OBJECT space.  [ruby-dev:31853]
-	  (ROBJECT_LEN, ROBJECT_PTR)
-	  (RCLASS_IV_TBL, RCLASS_M_TBL, RCLASS_SUPER, RCLASS_IV_INDEX_TBL)
-	  (RMODULE_IV_TBL, RMODULE_M_TBL, RMODULE_SUPER): abstract accessor
-	  defined.
-
-	* variable.c: support the modified RObject and RClass.
-
-	* object.c: ditto.
-
-	* class.c: ditto.
-
-	* gc.c: ditto.
-
-	* marshal.c: ditto.
-
-	* eval_method.ci: use the abstract accessor.
-
-	* insns.def: ditto.
-
-	* proc.c: ditto.
-
-	* struct.c: ditto.
-
-	* eval.c: ditto.
-
-	* error.c: ditto.
-
-	* vm.c: ditto.
-
-	* insnhelper.ci: ditto.
-
-	* ext/digest/digest.c: ditto.
-
-Fri Sep 28 13:20:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_getline_fast, rb_io_getline_1): set encoding to the
-	  result string, as well as getc.
-
-Fri Sep 28 12:51:42 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/bm_app_erb.rb: added.
-
-	* benchmark/bm_io_file_(create|read|write).rb: added.
-
-Fri Sep 28 12:49:05 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: fix file selection algorithm.
-
-Fri Sep 28 02:05:42 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_comparable): need not to check asciicompat here.
-
-	* encoding.c (rb_enc_check): ditto.
-
-	* string.c (rb_enc_str_coderange): tuned a bit; no broken check.
-
-	* encoding.c (rb_enc_check): new encoding comparison criteria.
-
-Thu Sep 27 17:36:28 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/REAMDE.win32: follow recent changes.
-
-Thu Sep 27 16:01:53 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: fix to output some helpful messages.
-
-Thu Sep 27 15:44:51 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* benchmark/driver.rb: added.
-
-	* common.mk: fix to use above driver.
-
-	* benchmark/prepare_so_count_words.rb: added.
-
-	* benchmark/bm_so_count_words.rb: fix benchmark process.
-
-Thu Sep 27 15:42:34 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* ext/fiber/fiber.c: modify prototype declaration.
-	  [ruby-core:12247]
-
-Thu Sep 27 09:42:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (strings, xstring, regexp, dsym): empty strings have
-	  US-ASCII encoding.
-
-Thu Sep 27 07:39:13 2007  Tanaka Akira  <akr@fsij.org>
-
-	* bootstraptest/runner.rb (assert_finish): new method.
-
-	* bootstraptest/test_knownbug.rb: add test for [ruby-dev:31866] using
-	  assert_finish.
-
-Thu Sep 27 04:46:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_associate_index): deal with ASCII compatible
-	  flags.
-
-	* encoding.c (rb_enc_check): allow ASCII compatible strings.
-
-	* parse.y (rb_intern_str): use ASCII encoding for ASCII string.
-
-	* string.c (rb_enc_str_coderange): check for code-range.
-
-	* string.c (rb_str_modify): clear code-range flags.
-
-	* string.c (rb_str_hash, rb_str_eql): ASCII compatible strings are
-	  comparable.
-
-	* include/ruby/encoding.h: added code-range flags.
-
-Thu Sep 27 04:40:47 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (rb_mark_set): new function to mark keys.
-
-	* marshal.c (struct dump_arg, struct load_arg): added wrappers to mark
-	  data and compat_tbl entries.  [ruby-dev:31870]
-
-Thu Sep 27 03:17:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_waitpid): no needs to poll.  [ruby-dev:31871]
-
-Wed Sep 26 20:11:46 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: remove a fixed test.
-
-Wed Sep 26 20:00:12 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/test_knownbug.rb: move fixed tests.
-
-	* bootstraptest/test_method.rb: ditto.
-
-	* test/ruby/test_io.rb: ditto.
-
-Wed Sep 26 19:36:26 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* eval.c (eval): fix to check stack overflow.
-	  [ruby-dev:31850]
-
-	* eval_intern.h, vm.h: move CHECK_STACK_OVERFLOW() macro.
-
-Wed Sep 26 19:27:11 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_throw): fix to move increment point.
-	  [ruby-dev:31840]
-
-Wed Sep 26 19:23:56 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* cont.c: Fiber as SemiCoroutine on default. [ruby-core:12146]
-
-	* ext/fiber/fiber.c: enable Fiber#transfer.
-
-Wed Sep 26 18:38:41 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_check): check for ASCII-compatibilities.
-
-	* parse.y (parser_tokadd_string, parser_parse_string,
-	  parser_here_document, parser_yylex): set encoding to US-ASCII.
-
-	* parse.y (rb_enc_symname_p): check if valid with encoding.
-
-	* parse.y (rb_intern3): let symbols have encoding.
-
-	* string.c (rb_str_hash): add encoding index.
-
-	* string.c (rb_str_comparable, rb_str_equal, rb_str_eql): check if
-	  compatible encoding.
-
-	* string.c (sym_inspect): made encoding aware.
-
-	* insns.def (opt_eq): compare with encoding.
-
-	* include/ruby/encoding.h (rb_enc_asciicompat): check if ASCII
-	  compatible.
-
-	* include/ruby/encoding.h (rb_enc_get_index): added prototype.
-
-	* include/ruby/intern.h (rb_str_comparable, rb_str_equal): ditto.
-
-Wed Sep 26 15:01:16 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (rb_get_alloc_func): cast to suppress a warning.
-
-	* eval_method.ci (remove_method): local variable to be initialized.
-
-Wed Sep 26 08:36:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* Makefile.in (ext/extinit.o): use $(OUTFLAG) as well as other
-	  objects.  [ruby-Bugs-14228]
-
-Wed Sep 26 05:12:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yyerror): limit error message length.
-	  [ruby-dev:31848]
-
-Tue Sep 25 15:11:32 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (io_ungetc): reallocate internal buffer if pushing data
-	  excess capacity.  [ruby-dev:31650]
-
-Tue Sep 25 13:43:03 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_method.ci (remove_method): should not remove undef place
-	  holder.  [ruby-dev:31816], [ruby-dev:31817]
-
-Tue Sep 25 09:51:31 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval.c (rb_longjmp): source file information may be NULL.
-	  [ruby-dev:31849]
-
-	* eval.c (ruby_finalize_0): clear trace_func before finalization.
-
-Mon Sep 24 22:36:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_equal): should handle recursive array.
-
-	* hash.c (hash_equal): should handle recursive hash.
-
-Mon Sep 24 22:14:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/weakref.rb (WeakRef): remove debug print.  [ruby-dev:31799]
-
-	* hash.c (hash_i): avoid too frequent hash conflict where key and
-	  value are same.  a patch from Yusuke ENDOH <mame AT tsg.ne.jp>.
-	  [ruby-dev:31802]
-
-Mon Sep 24 17:56:21 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/strscan/strscan.c (strscan_initialize, strscan_getch): use the
-	  encoding of the target string instead of setting to StringScanner
-	  instance.  [ruby-dev:31831]
-
-Mon Sep 24 16:52:11 2007  Urabe Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/net/http.rb: fix typo.
-
-Mon Sep 24 06:49:15 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
-
-	* lib/net/http.rb: an SSL verification (the server hostname should
-	  be matched with its certificate's commonName) is added.
-	  this verification can be skipped by
-	  "Net::HTTP#enable_post_connection_check=(false)".
-	  suggested by Chris Clark <cclark at isecpartners.com>
-
-	* lib/net/open-uri.rb: use Net::HTTP#enable_post_connection_check to
-	  perform SSL post connection check.
-
-	* ext/openssl/lib/openssl/ssl.c
-	  (OpenSSL::SSL::SSLSocket#post_connection_check): refine error message.
-
-Sun Sep 23 09:05:05 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (os_obj_of, os_each_obj): hide objects to be finalized.
-	  [ruby-dev:31810]
-
-Sun Sep 23 08:58:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (rb_attr): should not use alloca for unknown size
-	  input.  [ruby-dev:31818]
-
-	* parse.y (rb_intern_str): prevent str from optimization.
-
-Sun Sep 23 06:16:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_method.ci (remove_method): check for undefined method.
-	  [ruby-dev:31816]
-
-Sun Sep 23 05:42:35 2007  URABE Shyouhei  <shyouhei@ruby-lang.org>
-
-	* lib/rdoc/options.rb (Options::check_diagram): dot -V output
-	  changed. [ ruby-Bugs-11978 ], Thanks Florian Frank.
-
-Sat Sep 22 06:02:11 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/optparse.rb (OptionParser::List::summarize): use each_line if
-	  defined rather than each.  [ruby-Patches-14096]
-
-Sat Sep 22 05:19:49 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_init): separate from strio_initialize
-	  to share with strio_reopen properly.  [ruby-Bugs-13919]
-
-Fri Sep 21 14:51:40 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (gc_mark_rest): copy just used part.
-
-	* gc.c (gc_mark_children): mark u1 and u2 of NODE_ARGSCAT.
-
-	* gc.c (os_obj_of): hide T_VALUES too.  [ruby-dev:31804]
-
-	* gc.c (run_final): freeze temporary argument array.
-
-Fri Sep 21 04:58:39 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* misc/ruby-style.el (ruby-style-label-indent): fix for function top
-	  level labels.
-
-Fri Sep 21 02:11:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* re.c (rb_reg_match_m): evaluate a block if match.  it would make
-	  condition statement much shorter, if no else clause is needed.
-
-	* string.c (rb_str_match_m): ditto.
-
-Fri Sep 21 02:02:34 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* hash.c (hash_equal): should call rb_eql when argument eql is set.
-
-Thu Sep 20 17:28:00 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (popen_exec), process.c (rb_spawn): stop other threads before
-	  exec.  [ruby-core:08262]
-
-Tue Sep 18 22:08:42 2007  Keiju Ishitsuka  <keiju@ruby-lang.org>
-
-	* lib/matrix.rb: fix a coerce bug of Vector. [ruby-core: 12190]
-
-Mon Sep 17 21:06:03 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* lib/net/http.rb (HTTP::GenericRequest#initialize): check path is
-	  not nil. [ruby-dev:31149]
-
-Mon Sep 17 21:00:51 2007  Minero Aoki  <aamine@loveruby.net>
-
-	* parse.y (ripper): rename event: arglist_* -> args_*.
-
-	* parse.y (ripper): rename event: restparam -> rest_param.
-
-	* parse.y (ripper): rename event: constpath_* -> const_path_*.
-
-	* parse.y (ripper): rename event: topconst_* -> top_const_*.
-
-	* parse.y (ripper): rename event: iter_block -> method_add_block.
-
-	* parse.y (ripper): support block local parameter declaration.
-
-	* parse.y (ripper): introduce new macro params_new.
-
-	* ext/ripper/lib/ripper/sexp.rb: should not dispose event
-	  arguments whose name ends with "_new" but arity != 0.
-
-Sat Sep 15 23:36:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (struct parser_params): common members in the parser and
-	  ripper must be placed at each same location.
-
-Sat Sep 15 18:25:15 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* string.c (rb_str_rstrip_bang): fixed too much rstrip. [ruby-dev:31786]
-
-Sat Sep 15 17:32:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_initialize): set default encoding.  [ruby-dev:31787]
-
-	* ruby.c (load_file): make new parse instance after processing shebang
-	  line options.
-
-Sat Sep 15 17:04:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (rb_enc_associate_index, rb_enc_get_index): check if
-	  object is encoding capable.  [ruby-dev:31780]
-
-	* string.c (rb_str_subpat_set): check for if the argument is a String.
-
-Sat Sep 15 13:31:21 2007  Kouhei Sutou  <kou@cozmixng.org>
-
-	* lib/rss.rb, lib/rss/, test/rss/:
-	  - 0.1.9 -> 0.2.0.
-	  - supported Slash module.
-
-Fri Sep 14 22:20:01 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (fev_unadvise): no needs to reset
-	  event handlers.
-
-Fri Sep 14 17:28:32 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_io.rb: tests which cause SEGV should not be
-	  added.
-
-	* bootstraptest/test_knownbug.rb: add above test to known bug.
-
-Fri Sep 14 16:24:04 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_expandarray): assignment should be placed
-	  after creating new array.
-
-Fri Sep 14 16:17:30 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* bootstraptest/runner.rb: add a stress test (-s).
-
-Fri Sep 14 16:14:28 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.h, eval_intern.h: move some macros to eval_intern.h.
-
-	* eval_jump.ci (rb_f_throw): fix to use NEW_THROW_OBJECT().
-
-	* eval.c (rb_f_loop): remove additional macro.
-
-Fri Sep 14 16:12:10 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* insnhelper.ci (vm_expandarray): should be volatile value for GC.
-
-Thu Sep 13 15:42:03 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): inline cache entries are overwritten
-	  in iseq_build_body().
-
-Thu Sep 13 14:00:15 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (brace_block): should use compstmt.  patch submitted by
-	  Kirill A. Shutemov <k.shutemov AT gmail.com>  [ruby-core:12154].
-
-Thu Sep 13 13:47:08 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_id2str): fixed typo.
-
-Wed Sep 12 23:12:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ruby.c (proc_options): -W should be allowed in RUBYOPT
-	  environment variable.  [ruby-core:12118]
-
-Wed Sep 12 15:19:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_s_sysopen): should not use alloca for unknown size
-	  input.  [ruby-dev:31775]
-
-	* parse.y (rb_id2str): ditto.
-
-	* marshal.c (w_float): use snprintf instead of sprintf.
-
-Tue Sep 11 17:28:00 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/tempfile.rb (Tempfile::make_tmpname): Allow to specify a
-	  suffix for a temporary file name.
-
-	* lib/tempfile.rb (Tempfile::make_tmpname): Make temporary file
-	  names less predictable by including a random string.
-	  [inspired by: akr]
-
-Tue Sep 11 17:25:59 2007  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/shellwords.rb: Add shellescape() and shelljoin().
-
-	* lib/shellwords.rb: Rename shellwords() to shellsplit() and make
-	  the former an alias to the latter.
-
-	* lib/shellwords.rb: Add escape(), split(), join() as class
-	  methods, which are aliases to their respective long names
-	  prefixed with `shell'.
-
-	* lib/shellwords.rb: Add String#shellescape(), String#shellsplit()
-	  and Array#shelljoin() for convenience.
-
-Mon Sep 10 15:48:31 2007  Tanaka Akira  <akr@fsij.org>
-
-	* range.c: represent initialized state using EXCL instead of FL_USER3.
-
-	* range.c (range_dumper): make uninitialized range dumpable.
-	  (range_loader): make uninitialized range loadable.
-
-Mon Sep 10 13:44:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_cycle): avoid infinite loop for empty array.
-	  based on a patch from David Flanagan.  [ruby-core:12085]
-
-Mon Sep 10 01:21:23 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* marshal.c (r_object0): struct allocation first to check if a
-	  class is a struct.  compatibility check should come next.
-
-Mon Sep 10 01:05:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* range.c (range_step): fixed integer overflow.  [ruby-dev:31763]
-
-Sun Sep  9 08:57:27 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (_strptime): now also attaches an element
-	  which denotes leftover substring if exists.
-
-Sun Sep  9 01:59:08 2007  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (r_object0): check T_STRUCT type for structs.
-
-Sun Sep  9 01:17:05 2007  Tanaka Akira  <akr@fsij.org>
-
-	* marshal.c (r_object0): don't call user-defined initialize for
-	  T_STRUCT objects.
-
-	* include/ruby/intern.h (rb_struct_initialize): declared.
-
-	* struct.c (rb_struct_initialize): export.
-
-Sat Sep  8 23:55:56 2007  Tanaka Akira  <akr@fsij.org>
-
-	* eval_method.ci (rb_get_alloc_func): new function to get allocation
-	  function.
-
-	* include/ruby/intern.h (rb_alloc_func_t): declared.
-	  (rb_define_alloc_func): declared.
-	  (rb_marshal_define_compat): declared.
-
-	* range.c: use T_STRUCT for Range.
-
-	* inits.c: move Init_marshal() prior to Init_Range() because
-	  Init_Range calls rb_marshal_define_compat which needs
-	  marshal's compat_allocator_tbl initialized.
-
-	* marshal.c: support marshal format compatibility layer designed for
-	  marshaling T_STRUCT Range using T_OBJECT format.
-	  (rb_marshal_define_compat): defined.
-
-	[ruby-dev:31710]
-
-Sat Sep  8 10:05:14 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_s_members): check if __members__ is an
-	  array to prevent segmentation fault.  [ruby-dev:31759]
-
-Sat Sep  8 09:33:09 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (str[fp]time): now check specifications more
-	  strictly.
-
-Sat Sep  8 02:56:31 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* test/ruby/test_fiber.rb (TestFiber::test_throw): uncaught throw
-	  now raise ArgumentError exception.
-
-Sat Sep  8 02:45:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* struct.c (rb_struct_s_members): should raise TypeError instead
-	  of call rb_bug().  [ruby-dev:31709]
-
-	* marshal.c (r_object0): no nil check require any more.
-
-Sat Sep  8 01:46:36 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regenc.c, regenc.h (onigenc_single_byte_mbc_enc_len): should take
-	  two arguments. [ruby-dev:31754]
-
-Fri Sep  7 00:58:16 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* common.mk: fix typo.
-
-Fri Sep  7 00:28:25 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_getc): forgot to commit rb_enc_mbclen() fix.
-
-	* ext/stringio/stringio.c (strio_getc): rb_enc_mbclen() fix.
-
-	* ext/stringio/stringio.c (strio_ungetc): ditto.
-
-Thu Sep  6 22:57:01 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils::Entry_::copy): prevent self copy of
-	  directories.
-
-	* lib/fileutils.rb (FileUtils::fu_each_src_dest0): use try_convert.
-
-	* lib/fileutils.rb (FileUtils::fu_update_option): ditto.
-
-Thu Sep  6 21:36:33 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/oniguruma.h (OnigEncodingTypeST): add end parameter
-	  to mbc_enc_len.
-
-	* euc_jp.c (mbc_enc_len), sjis.c (mbc_enc_len),
-	  utf8.c (utf8_mbc_enc_len): ditto.
-
-	* encoding.c (rb_enc_mbclen): add end parameter.
-
-Thu Sep  6 21:31:49 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_cycle): typo in rdoc.  a patch from Yugui
-	  <yugui@yugui.sakura.ne.jp>.  [ruby-dev:31748]
-
-Thu Sep  6 12:42:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_succ, rb_str_chop_bang, rb_str_chop): m17n support.
-	  [ruby-dev:31734]
-
-Wed Sep  5 22:02:27 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* array.c (rb_ary_subseq): need integer overflow check.
-	  [ruby-dev:31736]
-
-	* array.c (rb_ary_splice): ditto.  [ruby-dev:31737]
-
-	* array.c (rb_ary_fill): ditto.  [ruby-dev:31738]
-
-	* string.c (rb_str_splice): integer overflow for length.
-	  [ruby-dev:31739]
-
-Tue Sep  4 20:43:44 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c: add WIN32OLE_EVENT#unadvise.
-
-	* test/win32ole/test_win32ole_event.rb: ditto.
-
-Mon Sep  3 15:37:09 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (vm.o): depends on st.h too.
-
-Sun Sep  2 23:38:29 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/st.h (struct st_table): make num_entries bitfield
-	  instead of num_bins for speed.  num_entries has less access.
-
-Sun Sep  2 00:37:57 2007  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* lib/date/format.rb (_parse): improved parsing of ordinal dates.
-
-	* lib/date/format.rb (_parse): use named character classes in some
-	  regular expressions.
-
-Sat Sep  1 23:44:26 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_jump.ci (rb_f_throw): wrap tag and TAG_THROW in a NODE_MEMO
-	  node to make throw instruction to work well.
-
-Sat Sep  1 20:56:07 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/ruby.h (struct RBignum): embed digits in RBignum for
-	  small bignums.
-
-	* bignum.c: RBignum embedded digits implemented.
-
-	* include/ruby/intern.h: declare rb_big_resize.
-
-	* gc.c: don't free embedded digits.
-
-	* numeric.c: replace direct bignum field accessor by abstract field
-	  accessor such as RBIGNUM(val)->sign to RBIGNUM_SIGN(val).
-
-	* sprintf.c: ditto.
-
-	* compar.c: ditto.
-
-	* marshal.c: ditto.
-
-	* random.c: ditto.
-
-	* .gdbinit: support embedded small bignums.
-
-	[ruby-dev:31689]
-
-Sat Sep  1 19:59:43 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_event_free): IConnectionPoint should be
-	  released.
-
-	* ext/win32ole/win32ole.c (EVENTSINK_Destructor): ITypeInfo should be
-	  released.
-
-	* ext/win32ole/win32ole.c (fev_initialize): refactoring.
-
-Sat Sep  1 16:26:09 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/socket/test_tcp.rb (test_recvfrom): same as mswin32 on mswin64.
-
-Sat Sep  1 14:24:23 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* st.c (st_numcmp, st_numhash): use st_data_t instead of long, because
-	  the former may be larger than the latter.
-
-	* include/ruby/st.h (CHAR_BIT): get rid of magic number.
-
-	* include/ruby/st.h (rb_index_t): use st_data_t for the platforms it
-	  is larger than int.
-
-Sat Sep  1 10:43:30 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* eval_jump.ci (rb_f_catch): generate new tag object if no argument is
-	  given.  backported from MatzRuby.  [ruby-dev:31609]
-
-	* eval_jump.ci (rb_catch): call #catch without arguments if tag
-	  string is NULL.
-
-	* eval_jump.ci (rb_f_throw): allow throwing non-symbol object.
-
-	* eval_jump.ci (rb_catch_obj): new function to wait throw with arbitrary
-	  object.
-
-	* eval_jump.ci (rb_throw_obj): new function to throw arbitrary object.
-
-	* variable.c (check_autoload_table): prevent multiple calls from
-	  RSTRING_PTR().
-
-Fri Aug 31 07:12:24 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* numeric.c (SQRT_LONG_MAX): use SIZEOF_LONG instead of SIZEOF_VALUE
-	  because SIZEOF_VALUE > SIZEOF_LONG on some platforms.
-
-Fri Aug 31 04:18:03 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (f_norm_arg, f_arg_item): not croak already erred names.
-	  [ruby-dev:31687]
-
-	* parse.y (assignable_gen): ignore already erred names.
-
-	* parse.y (shadowing_lvar_gen): always make new block local variable
-	  when shadowing outer local variable.  [ruby-dev:31507]
-
-Thu Aug 30 19:40:33 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regenc.h: check RUBY_EXTERN before including config.h and defines.h
-
-	* common.mk: update header dependency.
-
-Thu Aug 30 14:06:50 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_obj_define_method): reverted.  [ruby-talk:266637]
-
-Thu Aug 30 13:49:25 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: initialize $top_srcdir always.  [ruby-dev:31682]
-
-	* lib/mkmf.rb (try_const, have_const): check for a const is defined.
-	  [ruby-core:04422]
-
-Thu Aug 30 08:00:12 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/intern.h: declare rb_hash_tbl.
-
-	* include/ruby/ruby.h (RHash): delay st_table allocation.
-	  rename tbl field to ntbl to detect direct reference to the st_table
-	  as a compile error.
-	  (RHASH_TBL): abstract accessor defined.
-	  (RHASH_ITER_LEV): ditto.
-	  (RHASH_IFNONE): ditto.
-	  (RHASH_SIZE): ditto.
-	  (RHASH_EMPTY_P): ditto.
-	  (hash_alloc0, hash_alloc): unified because hash_alloc doesn't
-	  allocate st_table now.
-
-	* hash.c: delay st_table allocation.
-
-	* gc.c: replace tbl by ntbl.
-
-	* array.c: replace direct field accessor by abstract field accessor
-	  such as RHASH(hash)->tbl to RHASH_TBL(hash).
-
-	* marshal.c: ditto.
-
-	* insns.def: ditto.
-
-	* ext/iconv/iconv.c: ditto.
-
-	* ext/json/ext/generator/generator.c: ditto.
-
-	* ext/json/ext/parser/parser.c: ditto.
-
-	* ext/json/ext/parser/parser.rl: ditto.
-
-	* ext/syck/rubyext.c: ditto.
-
-	* ext/tk/tkutil/tkutil.c: ditto.
-
-	[ruby-dev:31678]
-
-Wed Aug 29 18:36:06 2007  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb: add :ftp_active_mode option.  [ruby-dev:31677]
-
-Wed Aug 29 14:55:28 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (str_gsub): should not use mbclen2() which has broken API.
-
-	* re.c: remove rb_reg_mbclen2().
-
-Wed Aug 29 12:48:17 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (aref_args): args may not be a list.  [ruby-dev:31592]
-
-Wed Aug 29 11:30:10 2007  Tanaka Akira  <akr@fsij.org>
-
-	* include/ruby/st.h (struct st_table): add entries_packed 1-bit
-	  bitfield.  decrease num_bins 1-bit.
-
-	* st.c: pack numhash which have 5 or less entries in bins.
-	  (st_init_table_with_size): setup entries_packed flag.
-	  (st_clear): support packed mode.
-	  (st_lookup): ditto.
-	  (st_insert): ditto.
-	  (st_add_direct): ditto.
-	  (st_copy): ditto.
-	  (st_delete): ditto.
-	  (st_foreach): ditto.
-	  (st_reverse_foreach): ditto.
-	  (unpack_entries): new function for converting to unpacked mode.
-
-	[ruby-list:43954]
-
-Wed Aug 29 10:46:37 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* include/ruby/defines.h (flush_register_windows): call "ta 0x03"
-	  even on Linux/Sparc.  [ruby-dev:31674]
-
-Tue Aug 28 19:16:00 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_type_progid): progid getted by
-	  ProgIDFromCLSID should be freed by CoTaskMemFree. Thanks, arton.
-
-	* test/win32ole/test_win32ole.rb (test_raise_message): set negative
-	  compareMode value to raise WIN32OLERuntimeError.
-
-	* test/win32ole/test_win32ole_type.rb (test_implemented_ole_types):
-	  support some environment which returns IShellDispatch5 instead
-	  of IShellDispatch.
-
-Tue Aug 28 15:42:09 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_subseq): retrieve substring based on byte offset.
-
-	* string.c (rb_str_rindex_m): was confusing character offset and
-	  byte offset.
-
-Tue Aug 28 14:23:31 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_splice_0): should check to modify.  [ruby-dev:31665]
-
-Tue Aug 28 14:21:46 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_prepare): set parser encode too when BOM exists.
-
-Tue Aug 28 00:51:22 2007  Koichi Sasada  <ko1@atdot.net>
-
-	* thread.c: fix Mutex to be interruptable lock.
-
-	* thread_win32.ci, thread_win32.h, thread_pthread.ci, thread_pthread.h:
-	  prepare native_cond_*() which are based on pthread_cond_*() spec.
-
-	* prelude.rb: fix Mutex#synchronize method.
-
-	* vm_core.h, include/ruby/intern.h: change unblock function interface
-	  (to pass some user data).
-
-	* file.c, process.c: ditto.
-
-	* benchmark/bm_vm2_mutex.rb: add a benchmark for mutex.
-
-	* benchmark/bm_vm3_thread_mutex.rb: add a benchmark for mutex
-	  with contention.
-
-	* benchmark/run.rb: fix to remove ENV['RUBYLIB'] for matzruby.
-
-	* test/ruby/test_thread.rb: add a test.
-
-	* common.mk: fix benchmark options.
-
-Mon Aug 27 23:14:02 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (rb_str_rstrip_bang): wrong strip point.  [ruby-dev:31652]
-
-	* string.c (rb_str_each_line): should swallow sequence of newlines
-	  if rs (optional argument) is an empty string.  [ruby-dev:31652]
-
-Mon Aug 27 22:39:08 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* encoding.c (rb_enc_codelen): raises invalid sequence exception
-	  if ONIGENC_CODE_TO_MBCLEN() returns zero.  [ruby-dev:31661]
-
-	* encoding.c (rb_enc_mbclen): check invalid sequence.
-
-Mon Aug 27 20:27:59 2007  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_type_progid): fix the bug.
-	  [ruby-dev:31576]
-
-	* test/win32ole/test_win32ole_type.rb (test_initialize):
-	  remove duplicate assertions.
-
-Mon Aug 27 19:10:50 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_getlogin): update documentation to note
-	  security issue.  [ruby-Bugs-11821]
-
-Mon Aug 27 15:56:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (sym_encoding): return the encoding of a Symbol.
-
-Mon Aug 27 15:33:10 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (IEEE_BIG_ENDIAN): use configured value.  [ruby-dev:31623]
-
-	* util.c (Llong): set to LONG_LONG if available.
-
-Mon Aug 27 13:11:56 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* string.c (tr_trans): wrong condition for mbmaxlen==1 strings.
-	  [ruby-dev:31652]
-
-Mon Aug 27 00:41:13 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
-
-	* io.c (rb_io_each_byte): caused infinite loop.  [ruby-dev:31652]
-
-	* io.c (rb_io_getc): should return nil at EOF, not EOFError.
-