Promote io-wait to the default gems

doc/maintainers.rdoc

@@ -94,8 +94,6 @@ Zachary Scott (zzak)
   Koichi Sasada (ko1)
 [ext/io/nonblock]
   Nobuyuki Nakada (nobu)
-[ext/io/wait]
-  Nobuyuki Nakada (nobu)
 [ext/monitor]
   Koichi Sasada (ko1)
 [ext/nkf]
@@ -309,6 +307,9 @@ Zachary Scott (zzak)
   Nobuyuki Nakada (nobu)
   https://github.com/ruby/io-console
   https://rubygems.org/gems/io-console
+[ext/io/wait]
+  Nobuyuki Nakada (nobu)
+  https://github.com/ruby/io-wait
 [ext/json]
   NARUSE, Yui (naruse), Hiroshi SHIBATA (hsbt)
   https://github.com/flori/json

doc/standard_library.rdoc

@@ -98,6 +98,7 @@ Fcntl:: Loads constants defined in the OS fcntl.h C header file
 Fiddle:: A libffi wrapper for Ruby
 GDBM:: Ruby extension for the GNU dbm (gdbm) library
 IO::console:: Console interface
+IO::wait::
 JSON:: Implements Javascript Object Notation for Ruby
 OpenSSL:: Provides SSL, TLS and general purpose cryptography for Ruby
 Psych:: A YAML parser and emitter for Ruby

ext/io/wait/io-wait.gemspec

@@ -0,0 +1,22 @@
+Gem::Specification.new do |spec|
+  spec.name          = "io-wait"
+  spec.version       = "0.1.0"
+  spec.authors       = ["Nobu Nakada"]
+  spec.email         = ["nobu@ruby-lang.org"]
+
+  spec.summary       = %q{Waits until IO is readable or writable without blocking.}
+  spec.description   = %q{Waits until IO is readable or writable without blocking.}
+  spec.homepage      = "https://github.com/ruby/io-wait"
+  spec.license       = ["Ruby", "BSD-2-Clause"]
+  spec.required_ruby_version = Gem::Requirement.new(">= 2.3.0")
+
+  spec.metadata["homepage_uri"] = spec.homepage
+  spec.metadata["source_code_uri"] = spec.homepage
+
+  spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
+    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+  end
+  spec.bindir        = "exe"
+  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+end

tool/sync_default_gems.rb

@@ -14,6 +14,7 @@ $repositories = {
   fiddle: 'ruby/fiddle',
   stringio: 'ruby/stringio',
   "io-console": 'ruby/io-console',
+  "io-wait": 'ruby/io-wait',
   csv: 'ruby/csv',
   webrick: 'ruby/webrick',
   dbm: 'ruby/dbm',
@@ -134,6 +135,12 @@ def sync_default_gems(gem)
     cp_r("#{upstream}/lib/io/console", "ext/io/console/lib")
     cp_r("#{upstream}/io-console.gemspec", "ext/io/console")
     `git checkout ext/io/console/depend`
+  when "io-wait"
+    rm_rf(%w[ext/io/wait test/io/wait])
+    cp_r("#{upstream}/ext/io/wait", "ext/io")
+    cp_r("#{upstream}/test/io/wait", "test/io")
+    cp_r("#{upstream}/io-wait.gemspec", "ext/io/wait")
+    `git checkout ext/io/wait/depend`
   when "dbm"
     rm_rf(%w[ext/dbm test/dbm])
     cp_r("#{upstream}/ext/dbm", "ext")