Maintainers¶ ↑
This page describes the current module, library, and extension maintainers of Ruby.
Module Maintainers¶ ↑
A module maintainer is responsible for a certain part of Ruby.
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The maintainer fixes bugs of the part. Particularly, they should fix security vulnerabilities as soon as possible. 
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They handle issues related the module on the Redmine or ML. 
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They may be discharged by the 3 months rule [ruby-core:25764]. 
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They have commit right to Ruby's repository to modify their part in the repository. 
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They have “developer” role on the Redmine to modify issues. 
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They have authority to decide the feature of their part. But they should always respect discussions on ruby-core/ruby-dev. 
A submaintainer of a module is like a maintainer. But The submaintainer does not have authority to change/add a feature on his/her part. They need consensus on ruby-core/ruby-dev before changing/adding. Some of submaintainers have commit right, others don't.
Language core features including security¶ ↑
Yukihiro Matsumoto (matz)
Evaluator¶ ↑
Koichi Sasada (ko1)
Core classes¶ ↑
Yukihiro Matsumoto (matz)
Documentation¶ ↑
Zachary Scott (zzak)
Standard Library Maintainers¶ ↑
Libraries¶ ↑
- lib/English.rb
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unmaintained 
- lib/abbrev.rb
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Akinori MUSHA (knu) 
- lib/base64.rb
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Yusuke Endoh (mame) 
- lib/benchmark.rb
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unmaintained 
- lib/cgi.rb, lib/cgi/*
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Takeyuki Fujioka (xibbar) 
- lib/drb.rb, lib/drb/*
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Masatoshi SEKI (seki) 
- lib/debug.rb
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unmaintained 
- lib/delegate.rb
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unmaintained 
- lib/e2mmap.rb
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Keiju ISHITSUKA (keiju) 
- lib/erb.rb
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Masatoshi SEKI (seki), Takashi Kokubun (k0kubun) 
- lib/find.rb
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Kazuki Tsujimoto (ktsj) 
- lib/forwardable.rb
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Keiju ISHITSUKA (keiju) 
- lib/getoptlong.rb
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unmaintained 
- lib/ipaddr.rb
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Akinori MUSHA (knu) 
- lib/irb.rb, lib/irb/*
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Keiju ISHITSUKA (keiju) 
- lib/logger.rb
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Naotoshi Seo (sonots) 
- lib/matrix.rb
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Marc-Andre Lafortune (marcandre) 
- lib/mkmf.rb
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unmaintained 
- lib/monitor.rb
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Shugo Maeda (shugo) 
- lib/mutex_m.rb
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Keiju ISHITSUKA (keiju) 
- lib/net/ftp.rb
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Shugo Maeda (shugo) 
- lib/net/imap.rb
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Shugo Maeda (shugo) 
- lib/net/http.rb, lib/net/https.rb
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NARUSE, Yui (naruse) 
- lib/net/pop.rb
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unmaintained 
- lib/net/protocol.rb
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unmaintained 
- lib/net/smtp.rb
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unmaintained 
- lib/observer.rb
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unmaintained 
- lib/open-uri.rb
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Tanaka Akira (akr) 
- lib/open3.rb
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unmaintained 
- lib/optparse.rb, lib/optparse/*
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Nobuyuki Nakada (nobu) 
- lib/ostruct.rb
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Marc-Andre Lafortune (marcandre) 
- lib/pp.rb
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Tanaka Akira (akr) 
- lib/prettyprint.rb
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Tanaka Akira (akr) 
- lib/prime.rb
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Yuki Sonoda (yugui) 
- lib/profile.rb
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unmaintained 
- lib/profiler.rb
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unmaintained 
- lib/pstore.rb
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unmaintained 
- lib/racc/*
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Aaron Patterson (tenderlove) 
- lib/resolv-replace.rb
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Tanaka Akira (akr) 
- lib/resolv.rb
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Tanaka Akira (akr) 
- lib/rexml/*
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Kouhei Sutou (kou) 
- lib/rinda/*
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Masatoshi SEKI (seki) 
- lib/rss.rb, lib/rss/*
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Kouhei Sutou (kou) 
- lib/rubygems.rb, lib/ubygems.rb, lib/rubygems/*
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Eric Hodel (drbrain), Hiroshi SHIBATA (hsbt) github.com/rubygems/rubygems 
- lib/set.rb
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Akinori MUSHA (knu) 
- lib/securerandom.rb
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Tanaka Akira (akr) 
- lib/shell.rb, lib/shell/*
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Keiju ISHITSUKA (keiju) 
- lib/shellwords.rb
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Akinori MUSHA (knu) 
- lib/singleton.rb
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Yukihiro Matsumoto (matz) 
- lib/sync.rb
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Keiju ISHITSUKA (keiju) 
- lib/tempfile.rb
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unmaintained 
- lib/tmpdir.rb
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unmaintained 
- lib/thwait.rb
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Keiju ISHITSUKA (keiju) 
- lib/time.rb
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Tanaka Akira (akr) 
- lib/timeout.rb
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Yukihiro Matsumoto (matz) 
- lib/tracer.rb
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Keiju ISHITSUKA (keiju) 
- lib/tsort.rb
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Tanaka Akira (akr) 
- lib/un.rb
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WATANABE Hirofumi (eban) 
- lib/unicode_normalize.rb, lib/unicode_normalize/*
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Martin J. Dürst 
- lib/uri.rb, lib/uri/*
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YAMADA, Akira (akira) 
- lib/weakref.rb
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unmaintained 
- lib/yaml.rb, lib/yaml/*
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Aaron Patterson (tenderlove), Hiroshi SHIBATA (hsbt) 
Extensions¶ ↑
- ext/cgi
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Nobuyoshi Nakada (nobu) 
- ext/continuation
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Koichi Sasada (ko1) 
- ext/coverage
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Yusuke Endoh (mame) 
- ext/digest, ext/digest/*
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Akinori MUSHA (knu) 
- ext/fiber
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Koichi Sasada (ko1) 
- ext/io/nonblock
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Nobuyuki Nakada (nobu) 
- ext/io/wait
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Nobuyuki Nakada (nobu) 
- ext/nkf
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NARUSE, Yui (narse) 
- ext/objspace
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unmaintained 
- ext/pathname
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Tanaka Akira (akr) 
- ext/pty
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unmaintained 
- ext/racc
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Aaron Patterson (tenderlove) 
- ext/readline
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TAKAO Kouji (kouji) 
- ext/ripper
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unmaintained 
- ext/socket
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Tanaka Akira (akr) 
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API change needs matz's approval 
 
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- ext/syslog
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Akinori MUSHA (knu) 
- ext/win32
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NAKAMURA Usaku (usa) 
- ext/win32ole
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Masaki Suketa (suke) 
Default gems Maintainers¶ ↑
Libraries¶ ↑
- lib/cmath.rb
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unmaintained github.com/ruby/cmath 
- lib/csv.rb
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James Edward Gray II (jeg2) github.com/ruby/csv 
- lib/fileutils.rb
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unmaintained github.com/ruby/fileutils 
- lib/rdoc.rb, lib/rdoc/*
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Eric Hodel (drbrain), Hiroshi SHIBATA (hsbt) github.com/ruby/rdoc 
- lib/scanf.rb
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David A. Black (dblack) github.com/ruby/scanf 
- lib/webrick.rb, lib/webrick/*
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Eric Wong (normalperson) bugs.ruby-lang.org/ 
Extensions¶ ↑
- ext/bigdecimal
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Kenta Murata (mrkn) github.com/ruby/bigdecimal 
- ext/date
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unmaintained github.com/ruby/date 
- ext/dbm
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unmaintained github.com/ruby/dbm 
- ext/etc
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unmaintained github.com/ruby/etc 
- ext/fcntl
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unmaintained github.com/ruby/fcntl 
- ext/fiddle
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Aaron Patterson (tenderlove) github.com/ruby/fiddle 
- ext/gdbm
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Yukihiro Matsumoto (matz) github.com/ruby/gdbm 
- ext/io/console
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Nobuyuki Nakada (nobu) github.com/ruby/io-console 
- ext/json
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NARUSE, Yui (naruse), Hiroshi SHIBATA (hsbt) github.com/flori/json 
- ext/openssl
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Kazuki Yamaguchi (rhe) github.com/ruby/openssl 
- ext/psych
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Aaron Patterson (tenderlove), Hiroshi SHIBATA(hsbt) github.com/ruby/psych 
- ext/sdbm
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Yukihiro Matsumoto (matz) github.com/ruby/sdbm 
- ext/stringio
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Nobuyuki Nakada (nobu) github.com/ruby/stringio 
- ext/strscan
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unmaintained github.com/ruby/strscan 
- ext/zlib
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unmaintained github.com/ruby/zlib 
Bundled gems upstream repositories¶ ↑
- did_you_mean
- minitest
- net-telnet
- power_assert
- rake
- test-unit
- xmlrpc