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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.

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)

Library Maintainers

lib/English.rb

unmaintained

lib/abbrev.rb

Akinori MUSHA (knu)

lib/base64.rb

Yusuke Endoh (mame)

lib/benchmark.rb

unmaintained

lib/cgi.rb, lib/cgi/*

Takeyuki Fujioka (xibbar)

lib/cmath.rb

unmaintained

lib/csv.rb

James Edward Gray II (jeg2)

lib/drb.rb, lib/drb/*

Masatoshi SEKI (seki)

lib/debug.rb

unmaintained

lib/delegate.rb

unmaintained

lib/e2mmap.rb

Keiju ISHITSUKA (keiju)

lib/erb.rb

Masatoshi SEKI (seki)

lib/fileutils.rb

unmaintained

lib/find.rb

Kazuki Tsujimoto (ktsj)

lib/forwardable.rb

Keiju ISHITSUKA (keiju)

lib/getoptlong.rb

unmaintained

lib/ipaddr.rb

Akinori MUSHA (knu)

lib/irb.rb, lib/irb/*

Keiju ISHITSUKA (keiju)

lib/logger.rb

Naotoshi Seo (sonots)

lib/mathn.rb

Keiju ISHITSUKA (keiju)

lib/matrix.rb

Marc-Andre Lafortune (marcandre)

lib/mkmf.rb

unmaintained

lib/monitor.rb

Shugo Maeda (shugo)

lib/mutex_m.rb

Keiju ISHITSUKA (keiju)

lib/net/ftp.rb

Shugo Maeda (shugo)

lib/net/imap.rb

Shugo Maeda (shugo)

lib/net/http.rb, lib/net/https.rb

NARUSE, Yui (naruse)

lib/net/pop.rb

unmaintained

lib/net/protocol.rb

unmaintained

lib/net/smtp.rb

unmaintained

lib/observer.rb

unmaintained

lib/open-uri.rb

Tanaka Akira (akr)

lib/open3.rb

unmaintained

lib/optparse.rb, lib/optparse/*

Nobuyuki Nakada (nobu)

lib/ostruct.rb

Marc-Andre Lafortune (marcandre)

lib/pp.rb

Tanaka Akira (akr)

lib/prettyprint.rb

Tanaka Akira (akr)

lib/prime.rb

Yuki Sonoda (yugui)

lib/profile.rb

unmaintained

lib/profiler.rb

unmaintained

lib/pstore.rb

unmaintained

lib/racc/*

Aaron Patterson (tenderlove)

lib/rdoc.rb, lib/rdoc/*

Eric Hodel (drbrain), Hiroshi SHIBATA (hsbt)

lib/resolv-replace.rb

Tanaka Akira (akr)

lib/resolv.rb

Tanaka Akira (akr)

lib/rexml/*

Kouhei Sutou (kou)

lib/rinda/*

Masatoshi SEKI (seki)

lib/rss.rb, lib/rss/*

Kouhei Sutou (kou)

lib/rubygems.rb, lib/ubygems.rb, lib/rubygems/*

Eric Hodel (drbrain), Hiroshi SHIBATA (hsbt)

lib/scanf.rb

David A. Black (dblack)

lib/set.rb

Akinori MUSHA (knu)

lib/securerandom.rb

Tanaka Akira (akr)

lib/shell.rb, lib/shell/*

Keiju ISHITSUKA (keiju)

lib/shellwords.rb

Akinori MUSHA (knu)

lib/singleton.rb

Yukihiro Matsumoto (matz)

lib/sync.rb

Keiju ISHITSUKA (keiju)

lib/tempfile.rb

unmaintained

lib/tmpdir.rb

unmaintained

lib/thwait.rb

Keiju ISHITSUKA (keiju)

lib/time.rb

Tanaka Akira (akr)

lib/timeout.rb

Yukihiro Matsumoto (matz)

lib/tracer.rb

Keiju ISHITSUKA (keiju)

lib/tsort.rb

Tanaka Akira (akr)

lib/un.rb

WATANABE Hirofumi (eban)

lib/unicode_normalize.rb, lib/unicode_normalize/*

Martin J. Dürst

lib/uri.rb, lib/uri/*

YAMADA, Akira (akira)

lib/weakref.rb

unmaintained

lib/webrick.rb, lib/webrick/*

Hiroshi Nakamura (nahi)

lib/yaml.rb, lib/yaml/*

Aaron Patterson (tenderlove), Hiroshi SHIBATA (hsbt)

Extension Maintainers

ext/bigdecimal

Kenta Murata (mrkn)

ext/cgi

Nobuyoshi Nakada (nobu)

ext/continuation

Koichi Sasada (ko1)

ext/coverage

Yusuke Endoh (mame)

ext/date

unmaintained

ext/dbm

unmaintained

ext/digest, ext/digest/*

Akinori MUSHA (knu)

ext/etc

unmaintained

ext/fcntl

unmaintained

ext/fiber

Koichi Sasada (ko1)

ext/fiddle

Aaron Patterson (tenderlove)

ext/gdbm

Yukihiro Matsumoto (matz)

ext/io/console

Nobuyuki Nakada (nobu)

ext/io/nonblock

Nobuyuki Nakada (nobu)

ext/io/wait

Nobuyuki Nakada (nobu)

ext/json

NARUSE, Yui (naruse), Hiroshi SHIBATA (hsbt)

ext/mathn/complex

Keiju ISHITSUKA (keiju)

ext/mathn/rational

Keiju ISHITSUKA (keiju)

ext/nkf

NARUSE, Yui (narse)

ext/objspace

unmaintained

ext/openssl

Kazuki Yamaguchi (rhe)

ext/pathname

Tanaka Akira (akr)

ext/psych

Aaron Patterson (tenderlove), Hiroshi SHIBATA(hsbt)

ext/pty

unmaintained

ext/racc

Aaron Patterson (tenderlove)

ext/readline

TAKAO Kouji (kouji)

ext/ripper

unmaintained

ext/sdbm

Yukihiro Matsumoto (matz)

ext/socket
  • Tanaka Akira (akr)

  • API change needs matz’s approval

ext/stringio

Nobuyuki Nakada (nobu)

ext/strscan

unmaintained

ext/syslog

Akinori MUSHA (knu)

ext/win32

NAKAMURA Usaku (usa)

ext/win32ole

Masaki Suketa (suke)

ext/zlib

unmaintained