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Alan Wu 83b0cedffe Add branch prediction annotations for object allocation
I get a slight boost from these with GCC 11 on Intel Skylake.

Part of a larger story to fix an allocation throughput regression
compared to 98eeadc ("Development of 3.4.0 started.") as the baseline.
2024-07-25 12:46:33 -04:00
.github Extend RUBY_TEST_TIMEOUT_SCALE on macos-14 and --repeat-count=2 2024-07-25 14:43:03 +09:00
basictest Ensure test suite is compatible with --frozen-string-literal 2024-03-14 17:56:15 +01:00
benchmark Implement Hash.new(capacity:) 2024-07-08 12:24:33 +02:00
bin Resync prism delete bin/dot 2023-11-14 16:22:03 -05:00
bootstraptest Rename a variable name 2024-07-19 16:39:21 +09:00
ccan Initialize loop variable of `ccan_list_for_each` 2023-12-24 19:34:25 +09:00
coroutine Do not define SHSTK feature for amd64 Context.S 2024-07-07 20:14:44 +10:00
coverage
cygwin windows-arm64 support (#8995) 2023-11-23 17:17:28 +09:00
defs Add/revise Errno descriptions (#10897) 2024-06-04 15:19:50 +00:00
doc Add MatchData#bytebegin and MatchData#byteend 2024-07-16 14:48:06 +09:00
enc IBM864 single-byte transcoding (#10518) 2024-07-11 17:03:14 +09:00
ext [ruby/openssl] Set time directly on the x509 store 2024-07-24 16:51:00 +00:00
gc Add branch prediction annotations for object allocation 2024-07-25 12:46:33 -04:00
gems Update bundled gems list as of 2024-07-16 2024-07-16 06:59:05 +00:00
include Fix memory leak in Regexp capture group when timeout 2024-07-25 09:23:49 -04:00
internal Add rb_block_call2, a flexible variant of rb_block_call 2024-07-10 13:00:47 +09:00
lib [rubygems/rubygems] Remove `to_yaml_properties` 2024-07-24 19:55:04 +00:00
libexec [rubygems/rubygems] Use modern hashes consistently 2023-12-07 22:29:33 +00:00
man [DOC] ruby.1: Refine RUBY_GC_HEAP_n_INIT_SLOTS description 2024-06-04 18:01:58 +09:00
misc Make interchangeable NODE types aliases 2024-06-02 09:43:33 +09:00
missing Add comments in setproctitle.c 2024-05-02 10:12:58 -04:00
prism [ruby/prism] Do not serialize common flags when PRISM_SERIALIZE_ONLY_SEMANTICS_FIELDS is set 2024-07-25 11:39:05 +00:00
sample [ruby/prism] Move sample files under sample/prism 2024-07-16 19:26:28 +00:00
spec Make Integer#round spec work regardless of pointer size 2024-07-24 18:20:30 +02:00
template [DOC] Document RbConfig::SIZEOF 2024-07-15 21:08:13 -04:00
test Fix memory leak in Regexp capture group when timeout 2024-07-25 09:23:49 -04:00
tool Write rbinc files at once 2024-07-18 19:34:10 +09:00
wasm [wasm] Avoid malloc during longjmp 2023-11-23 02:15:42 +09:00
win32 Win32: Skip check for VS2022 FP BUG by default 2024-07-15 16:34:23 +09:00
yjit YJIT: Tweak a comment a little [ci skip] 2024-07-18 13:03:17 -07:00
.dir-locals.el
.document [DOC] Documentize known_errors 2024-01-13 11:08:00 +09:00
.editorconfig
.gdbinit Allow gdb to search source path for required files 2024-06-11 14:03:58 +01:00
.git-blame-ignore-revs Ignore miss-and-revised commits [ci skip] 2024-02-27 11:47:50 +09:00
.gitattributes
.gitignore YJIT: print msg to stderr when RubyVM::YJIT.disasm not available (#10688) 2024-04-30 17:57:18 +00:00
.indent.pro Update .indent.pro [ci skip] 2022-07-22 21:59:58 +09:00
.mailmap Parenthesized SVN IDs in .mailmap look too verbose [ci skip] 2024-04-12 18:22:04 +09:00
.rdoc_options Sync strscan HEAD again. 2024-06-04 12:40:08 +09:00
.rspec_parallel
.travis.yml .travis.yml: Update jaruga's email. 2024-06-11 13:56:32 +02:00
BSDL
CONTRIBUTING.md
COPYING
COPYING.ja
GPL
KNOWNBUGS.rb
LEGAL [Bug #20397] Removed obsoleted section about nkf 2024-06-07 13:38:11 +09:00
NEWS.md [Feature #20624] Enhance `RubyVM::AbstractSyntaxTree::Node#locations` 2024-07-23 12:36:00 +09:00
README.EXT
README.EXT.ja
README.ja.md README.ja.md: Remove Cirrus CI badge image. folloup for 15ee9c7c1b. 2024-06-03 20:59:04 +09:00
README.md [DOC] AppVeyor is already retired 2024-04-04 18:20:13 +09:00
aclocal.m4
addr2line.c Move an embedded directive outside macro arguments 2024-02-08 12:06:07 +09:00
addr2line.h Dump backtraces to an arbitrary stream 2023-09-25 22:57:28 +09:00
array.c Don't shrink array in `ary_make_shared` 2024-07-09 10:22:29 -07:00
array.rb Remove redundant :use_block with yield (#11203) 2024-07-19 18:36:14 -07:00
ast.c Implement UNLESS NODE keyword locations 2024-07-23 14:35:23 +09:00
ast.rb [Feature #20624] Enhance `RubyVM::AbstractSyntaxTree::Node#locations` 2024-07-23 12:36:00 +09:00
autogen.sh
bignum.c [Bug #20524] win32: Suppress GMP warning 2024-06-05 18:01:28 +09:00
builtin.c Use line numbers as builtin-index 2024-01-22 19:39:34 +09:00
builtin.h Rewrite Array#each in Ruby using Primitive (#9533) 2024-01-23 20:09:57 +00:00
class.c Eliminate usage of OBJ_FREEZE_RAW 2024-04-16 17:20:35 +02:00
common.mk Set `BUILDING_SHARED_GC` when building shared GC 2024-07-16 09:09:41 -04:00
compar.c docs(compar.c): change class name in example 2023-12-11 08:56:37 +09:00
compile.c Change UNDEF Node structure 2024-07-20 11:25:26 +09:00
complex.c Fix links 2024-05-18 15:44:24 +09:00
configure.ac YJIT: Allow dev_nodebug to disasm release-mode code (#11198) 2024-07-18 13:01:47 -07:00
constant.h Stop exporting symbols for MJIT 2023-03-06 21:59:23 -08:00
cont.c Add ruby_mimcalloc 2024-04-24 15:30:43 -04:00
darray.h Remove dependency on gc.h for darray.h 2024-04-15 13:44:31 -04:00
debug.c Fix setting GC stress at boot when objspace not available 2024-03-27 09:39:23 -04:00
debug_counter.c Stop exporting symbols for MJIT 2023-03-06 21:59:23 -08:00
debug_counter.h Use real filename instead of `__FILE__` 2024-06-02 22:12:05 +09:00
dir.c Add a macro to initialize `struct getattrlist_args` 2024-07-17 12:00:27 +09:00
dir.rb show warning for unused block 2024-04-15 12:08:07 +09:00
dln.c Revert all changes to dln.c, dmydln.c, dln.h for the shared GC 2024-07-10 14:28:10 -04:00
dln.h Revert all changes to dln.c, dmydln.c, dln.h for the shared GC 2024-07-10 14:28:10 -04:00
dln_find.c Make `dln_warning` a variadic macro 2024-04-07 16:44:42 +09:00
dmydln.c Revert all changes to dln.c, dmydln.c, dln.h for the shared GC 2024-07-10 14:28:10 -04:00
dmyenc.c Separate miniruby from dmyext.c 2024-02-21 23:37:20 +09:00
dmyext.c Separate miniruby from dmyext.c 2024-02-21 23:37:20 +09:00
encindex.h
encoding.c Fix corruption of internal encoding string 2024-06-27 14:06:40 -04:00
enum.c Enumerable#all?: Stop optimizing when a given block is not optimizable 2024-07-11 12:28:23 +09:00
enumerator.c Do not set Enumerator::Lazy#zip to use packed format 2024-07-20 18:16:42 -07:00
error.c Make rb_check_frozen_inline() static inline again 2024-07-19 17:47:12 -04:00
eval.c [Feature #20470] Split GC into gc_impl.c 2024-07-03 09:03:40 -04:00
eval_error.c Do not include a backtick in error messages and backtraces 2024-02-15 18:42:31 +09:00
eval_intern.h Remove `translit_char` 2024-04-07 17:29:23 +09:00
eval_jump.c With ASAN `EC_REPUSH_TAG` doesn't work 2024-06-24 16:50:09 +09:00
file.c Fix `utimesat` availability condition 2024-07-18 11:20:17 +09:00
gc.c newobj_of(): Use parameter instead of GET_RACTOR() 2024-07-22 20:00:59 -04:00
gc.rb Document GC.config 2024-07-12 14:43:33 +01:00
gem_prelude.rb Warn default gems which will be gemified in future 2023-07-28 14:57:10 +09:00
golf_prelude.rb
goruby.c
hash.c Implement Hash.new(capacity:) 2024-07-08 12:24:33 +02:00
hash.rb Implement Hash.new(capacity:) 2024-07-08 12:24:33 +02:00
hrtime.h use of stdckdint.h 2024-04-27 21:55:28 +09:00
id_table.c Replace assert with RUBY_ASSERT in id_table.c 2024-02-12 15:07:47 -05:00
id_table.h Transition complex objects to "too complex" shape 2022-12-15 10:06:04 -08:00
imemo.c [Feature #20470] Split GC into gc_impl.c 2024-07-03 09:03:40 -04:00
inits.c Implement Hash.new(capacity:) 2024-07-08 12:24:33 +02:00
insns.def Refactor so we don't have _cd 2024-06-18 09:28:25 -07:00
internal.h [Feature #20265] Remove rb_newobj_of and RB_NEWOBJ_OF 2024-03-14 12:53:04 -04:00
io.c [DOC] IO#close on closed IO is not an error. 2024-06-19 13:42:40 +09:00
io.rb Move IO#readline to Ruby 2023-09-28 10:43:45 -07:00
io_buffer.c Fix comment: Buffer.for(string) without block returns readonly buffer 2024-05-19 23:24:50 +09:00
iseq.c Resize arrays in `rb_ary_freeze` and use it for freezing arrays 2024-07-02 10:34:23 -07:00
iseq.h Implement chilled strings 2024-03-19 09:26:49 +01:00
kernel.rb [DOC] Unify Doxygen formats (#10285) 2024-03-19 10:59:25 -07:00
lex.c.blt Use gperf 3.1 to generate ANSI-C code 2024-06-24 23:43:45 +09:00
load.c Resize arrays in `rb_ary_freeze` and use it for freezing arrays 2024-07-02 10:34:23 -07:00
loadpath.c
localeinit.c
main.c Revert "Load external GC using command line argument" 2024-07-05 14:05:58 -04:00
marshal.c Eliminate internal uses of `Data_Wrap_Struct` 2024-06-02 13:59:11 +02:00
marshal.rb
math.c [DOC] Missing comment markers 2023-09-27 16:18:05 +09:00
memory_view.c Refactor VM root modules 2024-03-06 15:33:43 -05:00
method.h Skip a redundant check for the rb_obj_hash case 2024-03-01 15:02:28 -08:00
mini_builtin.c [PRISM] Support for compiling builtins 2024-05-30 15:38:02 -04:00
miniinit.c Separate miniruby from dmyext.c 2024-02-21 23:37:20 +09:00
nilclass.rb
node.c Change UNDEF Node structure 2024-07-20 11:25:26 +09:00
node.h [Universal parser] Improve AST structure 2024-04-28 12:08:21 +09:00
node_dump.c Dump forwarding field of `struct rb_args_info` and `struct RNode_BLOCK_PASS` 2024-07-25 13:23:14 +09:00
numeric.c [DOC] Doc for Float#ceil (#11125) 2024-07-09 09:43:07 -04:00
numeric.rb Fix the return value of `Integer#downto` called with a block 2024-07-04 12:11:12 +09:00
object.c [DOC] Doc for BasicObject (#11139) 2024-07-23 11:06:19 -04:00
pack.c Introduce a specialize instruction for Array#pack 2024-05-23 12:11:50 -07:00
pack.rb show warning for unused block 2024-04-15 12:08:07 +09:00
parse.y [Bug #20647] Disallow `return` directly within a singleton class 2024-07-24 14:44:32 +09:00
parser_bits.h [Feature #19719] Universal Parser 2023-06-12 18:23:48 +09:00
parser_node.h Change RNode structure from union to struct 2023-09-28 11:58:10 +09:00
parser_st.c check modifcation whil ar->st 2023-12-15 11:58:43 +09:00
parser_st.h Fix memory leak when copying ST tables 2023-06-29 11:16:50 -04:00
parser_value.h [Feature #19719] Universal Parser 2023-06-12 18:23:48 +09:00
prelude.rb Fix ruby_testoptions on RubyCI 2023-03-08 12:00:14 -08:00
prism_compile.c [PRISM] Add anon_* flags for iseqs with anonymous * and ** 2024-07-24 12:02:33 -04:00
prism_compile.h [PRISM] Respect eval coverage setting 2024-05-20 12:28:47 -04:00
prism_init.c Move CRuby-specific prism files to top level 2023-09-28 09:44:16 -04:00
probes.d
probes_helper.h Stop exporting symbols for MJIT 2023-03-06 21:59:23 -08:00
proc.c Add rb_block_call2, a flexible variant of rb_block_call 2024-07-10 13:00:47 +09:00
process.c Fix missing variable 2024-04-07 21:16:26 +09:00
ractor.c Fix memory leak reported in main ractor when RUBY_FREE_AT_EXIT 2024-07-16 15:50:00 -04:00
ractor.rb remove `Ractor::Selector` from Ruby level 2023-12-16 01:00:01 +09:00
ractor_core.h [Feature #20470] Split GC into gc_impl.c 2024-07-03 09:03:40 -04:00
random.c Do not try random devices immediately twice 2024-06-07 10:42:41 +09:00
range.c [DOC] Fix and improve array slicing example in range.c 2024-07-17 11:42:29 +09:00
rational.c [Bug #20524] win32: Suppress GMP warning 2024-06-05 18:01:28 +09:00
re.c Add MatchData#bytebegin and MatchData#byteend 2024-07-16 14:48:06 +09:00
regcomp.c Fix [Bug #20246]: Don't set next_head_exact if a capture is called (#9897) 2024-02-13 09:53:03 +09:00
regenc.c [Bug #20239] Fix overflow at down-casting 2024-02-07 15:14:26 +09:00
regenc.h Prevent potential buffer overflow on enclen 2022-12-12 16:21:31 +09:00
regerror.c
regexec.c Fix memory leak in Regexp capture group when timeout 2024-07-25 09:23:49 -04:00
regint.h Fix memory leak in stk_base when Regexp timeout 2024-02-02 10:39:42 -05:00
regparse.c Remove null checks for xfree 2024-01-19 10:25:02 -05:00
regparse.h Fix onigmo name table without st 2023-11-03 10:41:48 +09:00
regsyntax.c
rjit.c Revisions for #10198 2024-03-12 13:44:48 -07:00
rjit.h RJIT: Add --rjit-trace to allow TracePoint during JIT 2023-12-21 21:05:13 -08:00
rjit.rb RJIT: Clean up unnecessary documentation 2023-12-21 16:47:13 -08:00
rjit_c.c Introduce a specialize instruction for Array#pack 2024-05-23 12:11:50 -07:00
rjit_c.h RJIT: Properly reject keyword splat with `yield` 2024-01-18 20:22:40 -05:00
rjit_c.rb Optimized forwarding callers and callees 2024-06-18 09:28:25 -07:00
ruby-runner.c Win32: ruby-runner is unnecessary on Windows in favor of SxS [ci skip] 2023-12-04 10:02:38 +09:00
ruby.c Move RUBY_FREE_AT_EXIT check earlier 2024-07-24 08:36:40 -04:00
ruby_assert.h
ruby_atomic.h
ruby_parser.c Remove unused functions from struct rb_parser_config_struct 2024-06-02 09:50:43 +09:00
rubyparser.h Implement UNLESS NODE keyword locations 2024-07-23 14:35:23 +09:00
rubystub.c `ruby_init_setproctitle` declaration has moved to internal/missing.h 2022-08-31 15:31:47 +09:00
scheduler.c Fix exception handling in `rb_fiber_scheduler_set`. (#10042) 2024-02-22 00:33:18 +13:00
shape.c Do not emit shape transition warnings when YJIT is compiling 2024-06-04 19:21:01 +02:00
shape.h Do not emit shape transition warnings when YJIT is compiling 2024-06-04 19:21:01 +02:00
signal.c Revert "hijack SIGCHLD handler for internal use" 2024-04-04 21:48:14 +09:00
siphash.c Fix and improve coroutines for Darwin (macOS) ppc/ppc64. (#5975) 2022-10-19 23:49:45 +13:00
siphash.h
sparc.c
sprintf.c Do not warn about extra `format` argument when passed as keywords 2024-07-11 07:39:50 +02:00
st.c Move clean-up after table rebuilding 2024-02-09 11:09:56 +09:00
strftime.c Introduce encoding check macro 2022-12-02 01:31:27 +09:00
string.c String.new(capacity:) don't substract termlen 2024-06-19 15:11:07 +02:00
string.rb Fix links 2024-05-18 15:44:24 +09:00
struct.c Eliminate usage of OBJ_FREEZE_RAW 2024-04-16 17:20:35 +02:00
symbol.c Add builtin type assertion 2024-04-08 11:13:29 +09:00
symbol.h Use `dllexport` as `RUBY_FUNC_EXPORTED` on Windows 2024-06-09 16:55:27 +09:00
symbol.rb Annotate Symbol#to_s as leaf (#9769) 2024-01-31 10:47:35 -05:00
thread.c Raise a TypeError for Thread#thread_variable{?,_get} for non-symbol 2024-07-06 12:07:32 +02:00
thread_none.c `rb_thread_sched_destroy` is not used now at all 2024-03-22 18:53:44 +09:00
thread_none.h M:N thread scheduler for Ractors 2023-10-12 14:47:01 +09:00
thread_pthread.c fix last commit 2024-07-09 06:43:28 +09:00
thread_pthread.h `struct rb_thread_sched_waiting` 2024-07-09 05:57:03 +09:00
thread_pthread_mn.c Don't crash if madvise(MADV_FREE or MADV_DONTNEED) fails 2024-07-19 13:44:01 +10:00
thread_sync.c Replace assert with RUBY_ASSERT in thread_sync.c 2024-02-12 15:07:47 -05:00
thread_sync.rb thread_sync.c: Clarify and document the behavior of timeout == 0 2022-10-17 16:56:00 +02:00
thread_win32.c `rb_thread_sched_destroy` is not used now at all 2024-03-22 18:53:44 +09:00
thread_win32.h M:N thread scheduler for Ractors 2023-10-12 14:47:01 +09:00
time.c Time internal representation comment removed. 2024-06-02 10:18:56 +09:00
timev.h Fix crash in Time on 32-bit systems 2023-04-04 11:12:07 -04:00
timev.rb [DOC] Time uses the proleptic Gregorian calendar. 2024-06-07 00:25:38 +09:00
trace_point.rb show warning for unused block 2024-04-15 12:08:07 +09:00
transcode.c Free everything at shutdown 2023-12-07 15:52:35 -05:00
transcode_data.h
universal_parser.c Remove unused functions from struct rb_parser_config_struct 2024-06-02 09:50:43 +09:00
util.c Fix double free when `getcwd` does not allocate buffer 2024-07-17 15:16:21 +09:00
variable.c [DOC] Note that rb_obj_freeze_inline() can raise NoMemoryError 2024-07-17 10:25:20 -04:00
variable.h Free everything at shutdown 2023-12-07 15:52:35 -05:00
vcpkg.json [Misc #20523] Use HEAD version of vcpkg at 20240605 2024-06-05 12:34:21 +09:00
version.c Refactor RUBY_DESCRIPTION assertions in test_rubyoptions 2024-07-18 13:03:17 -04:00
version.h Allow changing RUBY_PATCHLEVEL_STR if RUBY_PATCHLEVEL == -1 (#8578) 2023-10-03 09:19:54 -07:00
vm.c Optimized forwarding callers and callees 2024-06-18 09:28:25 -07:00
vm_args.c Avoid array allocation for f(*r2k_ary) when def f(x) 2024-07-18 22:17:21 -07:00
vm_backtrace.c [Feature #20335] `Thread.each_caller_location` arguments 2024-04-17 18:47:07 +09:00
vm_callinfo.h Fix comment for VM_CALL_ARGS_SIMPLE (#11067) 2024-06-28 10:11:35 -04:00
vm_core.h [Feature #20470] Implement support for USE_SHARED_GC 2024-07-03 09:03:40 -04:00
vm_debug.h Add ruby_debug_print functions to vm_debug.h 2024-01-06 09:32:45 +09:00
vm_dump.c windows-arm64 support (#8995) 2023-11-23 17:17:28 +09:00
vm_eval.c Add rb_block_call2, a flexible variant of rb_block_call 2024-07-10 13:00:47 +09:00
vm_exec.c RJIT: Correct the macro that defines rb_vm_insns_count 2023-12-19 00:06:21 -08:00
vm_exec.h Use `UNDEF_P` 2024-01-30 14:48:59 +09:00
vm_insnhelper.c [Bug #20633] Fix the condition for `atomic_signal_fence` 2024-07-14 10:36:35 +09:00
vm_insnhelper.h Optimized forwarding callers and callees 2024-06-18 09:28:25 -07:00
vm_method.c Optimized forwarding callers and callees 2024-06-18 09:28:25 -07:00
vm_opts.h Implement chilled strings 2024-03-19 09:26:49 +01:00
vm_sync.c VM barrier needs to store GC root 2024-07-05 21:20:54 +09:00
vm_sync.h
vm_trace.c Prefer `enum ruby_tag_type` over `int` 2024-03-17 15:57:19 +09:00
vsnprintf.c Use free with ruby_dtoa 2023-12-07 09:23:02 -08:00
warning.rb Kernel#warn: don't call `Warning.warn` unless the category is enabled 2024-06-12 20:57:31 +02:00
weakmap.c [DOC] Fix typos in WeakMap docs 2024-05-06 23:56:01 +09:00
yjit.c [Feature #20470] Split GC into gc_impl.c 2024-07-03 09:03:40 -04:00
yjit.h YJIT: Optimize local variables when EP == BP (take 2) (#10607) 2024-04-25 10:04:53 -04:00
yjit.rb YJIT: Delete otherwise-empty defer_compilation() blocks 2024-06-13 13:00:46 -04:00

README.md

Actions Status: MinGW Actions Status: RJIT Actions Status: Ubuntu Actions Status: Windows Travis Status

What is Ruby?

Ruby is an interpreted object-oriented programming language often used for web development. It also offers many scripting features to process plain text and serialized files, or manage system tasks. It is simple, straightforward, and extensible.

Features of Ruby

  • Simple Syntax
  • Normal Object-oriented Features (e.g. class, method calls)
  • Advanced Object-oriented Features (e.g. mix-in, singleton-method)
  • Operator Overloading
  • Exception Handling
  • Iterators and Closures
  • Garbage Collection
  • Dynamic Loading of Object Files (on some architectures)
  • Highly Portable (works on many Unix-like/POSIX compatible platforms as well as Windows, macOS, etc.) cf. https://docs.ruby-lang.org/en/master/maintainers_md.html#label-Platform+Maintainers

How to get Ruby

For a complete list of ways to install Ruby, including using third-party tools like rvm, see:

https://www.ruby-lang.org/en/downloads/

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

There are some other branches under development. Try the following command to see the list of branches:

$ git ls-remote https://github.com/ruby/ruby.git

You may also want to use https://git.ruby-lang.org/ruby.git (actual master of Ruby source) if you are a committer.

How to build

See Building Ruby

Ruby home page

https://www.ruby-lang.org/

Documentation

Mailing list

There is a mailing list to discuss Ruby. To subscribe to this list, please send the following phrase:

join

in the mail subject (not body) to the address ruby-talk-request@ml.ruby-lang.org.

Copying

See the file COPYING.

Feedback

Questions about the Ruby language can be asked on the Ruby-Talk mailing list or on websites like https://stackoverflow.com.

Bugs should be reported at https://bugs.ruby-lang.org. Read "Reporting Issues" for more information.

Contributing

See "Contributing to Ruby", which includes setup and build instructions.

The Author

Ruby was originally designed and developed by Yukihiro Matsumoto (Matz) in 1995.

matz@ruby-lang.org