sync_default_gems.rb: adjust indent [ci skip]

1 files changed, 659 insertions, 659 deletions

diff --git a/tool/sync_default_gems.rb b/tool/sync_default_gems.rb
index b8f9ce0875..4362d53537 100755
--- a/tool/sync_default_gems.rb
+++ b/tool/sync_default_gems.rb
@@ -5,690 +5,690 @@
 require 'fileutils'
 
 module SyncDefaultGems
-include FileUtils
-extend FileUtils
-
-module_function
-
-REPOSITORIES = {
-  rubygems: 'rubygems/rubygems',
-  rdoc: 'ruby/rdoc',
-  reline: 'ruby/reline',
-  json: 'flori/json',
-  psych: 'ruby/psych',
-  fileutils: 'ruby/fileutils',
-  fiddle: 'ruby/fiddle',
-  stringio: 'ruby/stringio',
-  "io-console": 'ruby/io-console',
-  "io-nonblock": 'ruby/io-nonblock',
-  "io-wait": 'ruby/io-wait',
-  csv: 'ruby/csv',
-  etc: 'ruby/etc',
-  date: 'ruby/date',
-  zlib: 'ruby/zlib',
-  fcntl: 'ruby/fcntl',
-  strscan: 'ruby/strscan',
-  ipaddr: 'ruby/ipaddr',
-  logger: 'ruby/logger',
-  ostruct: 'ruby/ostruct',
-  irb: 'ruby/irb',
-  forwardable: "ruby/forwardable",
-  mutex_m: "ruby/mutex_m",
-  racc: "ruby/racc",
-  singleton: "ruby/singleton",
-  open3: "ruby/open3",
-  getoptlong: "ruby/getoptlong",
-  pstore: "ruby/pstore",
-  delegate: "ruby/delegate",
-  benchmark: "ruby/benchmark",
-  cgi: "ruby/cgi",
-  readline: "ruby/readline",
-  "readline-ext": "ruby/readline-ext",
-  observer: "ruby/observer",
-  timeout: "ruby/timeout",
-  yaml: "ruby/yaml",
-  uri: "ruby/uri",
-  openssl: "ruby/openssl",
-  did_you_mean: "ruby/did_you_mean",
-  weakref: "ruby/weakref",
-  tempfile: "ruby/tempfile",
-  tmpdir: "ruby/tmpdir",
-  English: "ruby/English",
-  "net-protocol": "ruby/net-protocol",
-  "net-http": "ruby/net-http",
-  bigdecimal: "ruby/bigdecimal",
-  optparse: "ruby/optparse",
-  set: "ruby/set",
-  find: "ruby/find",
-  rinda: "ruby/rinda",
-  erb: "ruby/erb",
-  nkf: "ruby/nkf",
-  tsort: "ruby/tsort",
-  abbrev: "ruby/abbrev",
-  shellwords: "ruby/shellwords",
-  base64: "ruby/base64",
-  syslog: "ruby/syslog",
-  "open-uri": "ruby/open-uri",
-  securerandom: "ruby/securerandom",
-  resolv: "ruby/resolv",
-  "resolv-replace": "ruby/resolv-replace",
-  time: "ruby/time",
-  pp: "ruby/pp",
-  prettyprint: "ruby/prettyprint",
-  drb: "ruby/drb",
-  pathname: "ruby/pathname",
-  digest: "ruby/digest",
-  error_highlight: "ruby/error_highlight",
-  syntax_suggest: "ruby/syntax_suggest",
-  un: "ruby/un",
-  win32ole: "ruby/win32ole",
-}
-
-def pipe_readlines(args, rs: "\0", chomp: true)
-  IO.popen(args) do |f|
-    f.readlines(rs, chomp: chomp)
+  include FileUtils
+  extend FileUtils
+
+  module_function
+
+  REPOSITORIES = {
+    rubygems: 'rubygems/rubygems',
+    rdoc: 'ruby/rdoc',
+    reline: 'ruby/reline',
+    json: 'flori/json',
+    psych: 'ruby/psych',
+    fileutils: 'ruby/fileutils',
+    fiddle: 'ruby/fiddle',
+    stringio: 'ruby/stringio',
+    "io-console": 'ruby/io-console',
+    "io-nonblock": 'ruby/io-nonblock',
+    "io-wait": 'ruby/io-wait',
+    csv: 'ruby/csv',
+    etc: 'ruby/etc',
+    date: 'ruby/date',
+    zlib: 'ruby/zlib',
+    fcntl: 'ruby/fcntl',
+    strscan: 'ruby/strscan',
+    ipaddr: 'ruby/ipaddr',
+    logger: 'ruby/logger',
+    ostruct: 'ruby/ostruct',
+    irb: 'ruby/irb',
+    forwardable: "ruby/forwardable",
+    mutex_m: "ruby/mutex_m",
+    racc: "ruby/racc",
+    singleton: "ruby/singleton",
+    open3: "ruby/open3",
+    getoptlong: "ruby/getoptlong",
+    pstore: "ruby/pstore",
+    delegate: "ruby/delegate",
+    benchmark: "ruby/benchmark",
+    cgi: "ruby/cgi",
+    readline: "ruby/readline",
+    "readline-ext": "ruby/readline-ext",
+    observer: "ruby/observer",
+    timeout: "ruby/timeout",
+    yaml: "ruby/yaml",
+    uri: "ruby/uri",
+    openssl: "ruby/openssl",
+    did_you_mean: "ruby/did_you_mean",
+    weakref: "ruby/weakref",
+    tempfile: "ruby/tempfile",
+    tmpdir: "ruby/tmpdir",
+    English: "ruby/English",
+    "net-protocol": "ruby/net-protocol",
+    "net-http": "ruby/net-http",
+    bigdecimal: "ruby/bigdecimal",
+    optparse: "ruby/optparse",
+    set: "ruby/set",
+    find: "ruby/find",
+    rinda: "ruby/rinda",
+    erb: "ruby/erb",
+    nkf: "ruby/nkf",
+    tsort: "ruby/tsort",
+    abbrev: "ruby/abbrev",
+    shellwords: "ruby/shellwords",
+    base64: "ruby/base64",
+    syslog: "ruby/syslog",
+    "open-uri": "ruby/open-uri",
+    securerandom: "ruby/securerandom",
+    resolv: "ruby/resolv",
+    "resolv-replace": "ruby/resolv-replace",
+    time: "ruby/time",
+    pp: "ruby/pp",
+    prettyprint: "ruby/prettyprint",
+    drb: "ruby/drb",
+    pathname: "ruby/pathname",
+    digest: "ruby/digest",
+    error_highlight: "ruby/error_highlight",
+    syntax_suggest: "ruby/syntax_suggest",
+    un: "ruby/un",
+    win32ole: "ruby/win32ole",
+  }
+
+  def pipe_readlines(args, rs: "\0", chomp: true)
+    IO.popen(args) do |f|
+      f.readlines(rs, chomp: chomp)
+    end
   end
-end
 
-def replace_rdoc_ref(file)
-  src = File.binread(file)
-  changed = false
-  changed |= src.gsub!(%r[\[\Khttps://docs\.ruby-lang\.org/en/master(?:/doc)?/(([A-Z]\w+(?:/[A-Z]\w+)*)|\w+_rdoc)\.html(\#\S+)?(?=\])]) do
-    name, mod, label = $1, $2, $3
-    mod &&= mod.gsub('/', '::')
-    if label && (m = label.match(/\A\#(?:method-([ci])|(?:(?:class|module)-#{mod}-)?label)-([-+\w]+)\z/))
-      scope, label = m[1], m[2]
-      scope = scope ? scope.tr('ci', '.#') : '@'
+  def replace_rdoc_ref(file)
+    src = File.binread(file)
+    changed = false
+    changed |= src.gsub!(%r[\[\Khttps://docs\.ruby-lang\.org/en/master(?:/doc)?/(([A-Z]\w+(?:/[A-Z]\w+)*)|\w+_rdoc)\.html(\#\S+)?(?=\])]) do
+      name, mod, label = $1, $2, $3
+      mod &&= mod.gsub('/', '::')
+      if label && (m = label.match(/\A\#(?:method-([ci])|(?:(?:class|module)-#{mod}-)?label)-([-+\w]+)\z/))
+        scope, label = m[1], m[2]
+        scope = scope ? scope.tr('ci', '.#') : '@'
+      end
+      "rdoc-ref:#{mod || name.chomp("_rdoc") + ".rdoc"}#{scope}#{label}"
     end
-    "rdoc-ref:#{mod || name.chomp("_rdoc") + ".rdoc"}#{scope}#{label}"
+    changed or return false
+    File.rename(file, file + "~")
+    File.binwrite(file, src)
+    return true
   end
-  changed or return false
-  File.rename(file, file + "~")
-  File.binwrite(file, src)
-  return true
-end
 
-def replace_rdoc_ref_all
-  result = pipe_readlines(%W"git status porcelain -z -- *.c *.rb *.rdoc")
-  result.map! {|line| line[/\A.M (.*)/, 1]}
-  result.compact!
-  result = pipe_readlines(%W"git grep -z -l -F [https://docs.ruby-lang.org/en/master/ --" + result)
-  result.inject(false) {|changed, file| changed | replace_rdoc_ref(file)}
-end
+  def replace_rdoc_ref_all
+    result = pipe_readlines(%W"git status porcelain -z -- *.c *.rb *.rdoc")
+    result.map! {|line| line[/\A.M (.*)/, 1]}
+    result.compact!
+    result = pipe_readlines(%W"git grep -z -l -F [https://docs.ruby-lang.org/en/master/ --" + result)
+    result.inject(false) {|changed, file| changed | replace_rdoc_ref(file)}
+  end
 
-# We usually don't use this. Please consider using #sync_default_gems_with_commits instead.
-def sync_default_gems(gem)
-  repo = REPOSITORIES[gem.to_sym]
-  puts "Sync #{repo}"
-
-  upstream = File.join("..", "..", repo)
-
-  case gem
-  when "rubygems"
-    rm_rf(%w[lib/rubygems lib/rubygems.rb test/rubygems])
-    cp_r(Dir.glob("#{upstream}/lib/rubygems*"), "lib")
-    cp_r("#{upstream}/test/rubygems", "test")
-    rm_rf(%w[lib/bundler lib/bundler.rb libexec/bundler libexec/bundle spec/bundler tool/bundler/*])
-    cp_r(Dir.glob("#{upstream}/bundler/lib/bundler*"), "lib")
-    cp_r(Dir.glob("#{upstream}/bundler/exe/bundle*"), "libexec")
-
-    gemspec_content = File.readlines("#{upstream}/bundler/bundler.gemspec").map do |line|
-      next if line =~ /LICENSE\.md/
-
-      line.gsub("bundler.gemspec", "lib/bundler/bundler.gemspec").gsub('"exe"', '"libexec"')
-    end.compact.join
-    File.write("lib/bundler/bundler.gemspec", gemspec_content)
-
-    cp_r("#{upstream}/bundler/spec", "spec/bundler")
-    cp_r(Dir.glob("#{upstream}/bundler/tool/bundler/dev_gems*"), "tool/bundler")
-    cp_r(Dir.glob("#{upstream}/bundler/tool/bundler/test_gems*"), "tool/bundler")
-    cp_r(Dir.glob("#{upstream}/bundler/tool/bundler/rubocop_gems*"), "tool/bundler")
-    cp_r(Dir.glob("#{upstream}/bundler/tool/bundler/standard_gems*"), "tool/bundler")
-    rm_rf(%w[spec/bundler/support/artifice/vcr_cassettes])
-    license_files = %w[
-      lib/bundler/vendor/thor/LICENSE.md
-      lib/rubygems/resolver/molinillo/LICENSE
-      lib/bundler/vendor/molinillo/LICENSE
-      lib/bundler/vendor/connection_pool/LICENSE
-      lib/bundler/vendor/net-http-persistent/README.rdoc
-      lib/bundler/vendor/fileutils/LICENSE.txt
-      lib/bundler/vendor/tsort/LICENSE.txt
-      lib/bundler/vendor/uri/LICENSE.txt
-      lib/rubygems/optparse/COPYING
-      lib/rubygems/tsort/LICENSE.txt
-    ]
-    rm_rf license_files
-  when "rdoc"
-    rm_rf(%w[lib/rdoc lib/rdoc.rb test/rdoc libexec/rdoc libexec/ri])
-    cp_r(Dir.glob("#{upstream}/lib/rdoc*"), "lib")
-    cp_r("#{upstream}/doc/rdoc", "doc")
-    cp_r("#{upstream}/test/rdoc", "test")
-    cp_r("#{upstream}/rdoc.gemspec", "lib/rdoc")
-    cp_r("#{upstream}/Gemfile", "lib/rdoc")
-    cp_r("#{upstream}/Rakefile", "lib/rdoc")
-    cp_r("#{upstream}/exe/rdoc", "libexec")
-    cp_r("#{upstream}/exe/ri", "libexec")
-    parser_files = {
-      'lib/rdoc/markdown.kpeg' => 'lib/rdoc/markdown.rb',
-      'lib/rdoc/markdown/literals.kpeg' => 'lib/rdoc/markdown/literals.rb',
-      'lib/rdoc/rd/block_parser.ry' => 'lib/rdoc/rd/block_parser.rb',
-      'lib/rdoc/rd/inline_parser.ry' => 'lib/rdoc/rd/inline_parser.rb'
-    }
-    Dir.chdir(upstream) do
-      `bundle install`
-      parser_files.each_value do |dst|
-        `bundle exec rake #{dst}`
+  # We usually don't use this. Please consider using #sync_default_gems_with_commits instead.
+  def sync_default_gems(gem)
+    repo = REPOSITORIES[gem.to_sym]
+    puts "Sync #{repo}"
+
+    upstream = File.join("..", "..", repo)
+
+    case gem
+    when "rubygems"
+      rm_rf(%w[lib/rubygems lib/rubygems.rb test/rubygems])
+      cp_r(Dir.glob("#{upstream}/lib/rubygems*"), "lib")
+      cp_r("#{upstream}/test/rubygems", "test")
+      rm_rf(%w[lib/bundler lib/bundler.rb libexec/bundler libexec/bundle spec/bundler tool/bundler/*])
+      cp_r(Dir.glob("#{upstream}/bundler/lib/bundler*"), "lib")
+      cp_r(Dir.glob("#{upstream}/bundler/exe/bundle*"), "libexec")
+
+      gemspec_content = File.readlines("#{upstream}/bundler/bundler.gemspec").map do |line|
+        next if line =~ /LICENSE\.md/
+
+        line.gsub("bundler.gemspec", "lib/bundler/bundler.gemspec").gsub('"exe"', '"libexec"')
+      end.compact.join
+      File.write("lib/bundler/bundler.gemspec", gemspec_content)
+
+      cp_r("#{upstream}/bundler/spec", "spec/bundler")
+      cp_r(Dir.glob("#{upstream}/bundler/tool/bundler/dev_gems*"), "tool/bundler")
+      cp_r(Dir.glob("#{upstream}/bundler/tool/bundler/test_gems*"), "tool/bundler")
+      cp_r(Dir.glob("#{upstream}/bundler/tool/bundler/rubocop_gems*"), "tool/bundler")
+      cp_r(Dir.glob("#{upstream}/bundler/tool/bundler/standard_gems*"), "tool/bundler")
+      rm_rf(%w[spec/bundler/support/artifice/vcr_cassettes])
+      license_files = %w[
+        lib/bundler/vendor/thor/LICENSE.md
+        lib/rubygems/resolver/molinillo/LICENSE
+        lib/bundler/vendor/molinillo/LICENSE
+        lib/bundler/vendor/connection_pool/LICENSE
+        lib/bundler/vendor/net-http-persistent/README.rdoc
+        lib/bundler/vendor/fileutils/LICENSE.txt
+        lib/bundler/vendor/tsort/LICENSE.txt
+        lib/bundler/vendor/uri/LICENSE.txt
+        lib/rubygems/optparse/COPYING
+        lib/rubygems/tsort/LICENSE.txt
+      ]
+      rm_rf license_files
+    when "rdoc"
+      rm_rf(%w[lib/rdoc lib/rdoc.rb test/rdoc libexec/rdoc libexec/ri])
+      cp_r(Dir.glob("#{upstream}/lib/rdoc*"), "lib")
+      cp_r("#{upstream}/doc/rdoc", "doc")
+      cp_r("#{upstream}/test/rdoc", "test")
+      cp_r("#{upstream}/rdoc.gemspec", "lib/rdoc")
+      cp_r("#{upstream}/Gemfile", "lib/rdoc")
+      cp_r("#{upstream}/Rakefile", "lib/rdoc")
+      cp_r("#{upstream}/exe/rdoc", "libexec")
+      cp_r("#{upstream}/exe/ri", "libexec")
+      parser_files = {
+        'lib/rdoc/markdown.kpeg' => 'lib/rdoc/markdown.rb',
+        'lib/rdoc/markdown/literals.kpeg' => 'lib/rdoc/markdown/literals.rb',
+        'lib/rdoc/rd/block_parser.ry' => 'lib/rdoc/rd/block_parser.rb',
+        'lib/rdoc/rd/inline_parser.ry' => 'lib/rdoc/rd/inline_parser.rb'
+      }
+      Dir.chdir(upstream) do
+        `bundle install`
+        parser_files.each_value do |dst|
+          `bundle exec rake #{dst}`
+        end
       end
+      parser_files.each_pair do |src, dst|
+        rm_rf(src)
+        cp_r("#{upstream}/#{dst}", dst)
+      end
+      `git checkout lib/rdoc/.document`
+      rm_rf(%w[lib/rdoc/Gemfile lib/rdoc/Rakefile])
+    when "reline"
+      rm_rf(%w[lib/reline lib/reline.rb test/reline])
+      cp_r(Dir.glob("#{upstream}/lib/reline*"), "lib")
+      cp_r("#{upstream}/test/reline", "test")
+      cp_r("#{upstream}/reline.gemspec", "lib/reline")
+    when "irb"
+      rm_rf(%w[lib/irb lib/irb.rb test/irb])
+      cp_r(Dir.glob("#{upstream}/lib/irb*"), "lib")
+      cp_r("#{upstream}/test/irb", "test")
+      cp_r("#{upstream}/irb.gemspec", "lib/irb")
+      cp_r("#{upstream}/man/irb.1", "man/irb.1")
+      cp_r("#{upstream}/doc/irb", "doc")
+    when "json"
+      rm_rf(%w[ext/json test/json])
+      cp_r("#{upstream}/ext/json/ext", "ext/json")
+      cp_r("#{upstream}/tests", "test/json")
+      rm_rf("test/json/lib")
+      cp_r("#{upstream}/lib", "ext/json")
+      cp_r("#{upstream}/json.gemspec", "ext/json")
+      cp_r("#{upstream}/VERSION", "ext/json")
+      rm_rf(%w[ext/json/lib/json/ext ext/json/lib/json/pure.rb ext/json/lib/json/pure])
+      `git checkout ext/json/extconf.rb ext/json/parser/prereq.mk ext/json/generator/depend ext/json/parser/depend ext/json/depend`
+    when "psych"
+      rm_rf(%w[ext/psych test/psych])
+      cp_r("#{upstream}/ext/psych", "ext")
+      cp_r("#{upstream}/lib", "ext/psych")
+      cp_r("#{upstream}/test/psych", "test")
+      rm_rf(%w[ext/psych/lib/org ext/psych/lib/psych.jar ext/psych/lib/psych_jars.rb])
+      rm_rf(%w[ext/psych/lib/psych.{bundle,so} ext/psych/lib/2.*])
+      rm_rf(["ext/psych/yaml/LICENSE"])
+      cp_r("#{upstream}/psych.gemspec", "ext/psych")
+      `git checkout ext/psych/depend ext/psych/.gitignore`
+    when "fiddle"
+      rm_rf(%w[ext/fiddle test/fiddle])
+      cp_r("#{upstream}/ext/fiddle", "ext")
+      cp_r("#{upstream}/lib", "ext/fiddle")
+      cp_r("#{upstream}/test/fiddle", "test")
+      cp_r("#{upstream}/fiddle.gemspec", "ext/fiddle")
+      `git checkout ext/fiddle/depend`
+      rm_rf(%w[ext/fiddle/lib/fiddle.{bundle,so}])
+    when "stringio"
+      rm_rf(%w[ext/stringio test/stringio])
+      cp_r("#{upstream}/ext/stringio", "ext")
+      cp_r("#{upstream}/test/stringio", "test")
+      cp_r("#{upstream}/stringio.gemspec", "ext/stringio")
+      `git checkout ext/stringio/depend ext/stringio/README.md`
+    when "io-console"
+      rm_rf(%w[ext/io/console test/io/console])
+      cp_r("#{upstream}/ext/io/console", "ext/io")
+      cp_r("#{upstream}/test/io/console", "test/io")
+      mkdir_p("ext/io/console/lib")
+      cp_r("#{upstream}/lib/io/console", "ext/io/console/lib")
+      rm_rf("ext/io/console/lib/console/ffi")
+      cp_r("#{upstream}/io-console.gemspec", "ext/io/console")
+      `git checkout ext/io/console/depend`
+    when "io-nonblock"
+      rm_rf(%w[ext/io/nonblock test/io/nonblock])
+      cp_r("#{upstream}/ext/io/nonblock", "ext/io")
+      cp_r("#{upstream}/test/io/nonblock", "test/io")
+      cp_r("#{upstream}/io-nonblock.gemspec", "ext/io/nonblock")
+      `git checkout ext/io/nonblock/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 "etc"
+      rm_rf(%w[ext/etc test/etc])
+      cp_r("#{upstream}/ext/etc", "ext")
+      cp_r("#{upstream}/test/etc", "test")
+      cp_r("#{upstream}/etc.gemspec", "ext/etc")
+      `git checkout ext/etc/depend`
+    when "date"
+      rm_rf(%w[ext/date test/date])
+      cp_r("#{upstream}/doc/date", "doc")
+      cp_r("#{upstream}/ext/date", "ext")
+      cp_r("#{upstream}/lib", "ext/date")
+      cp_r("#{upstream}/test/date", "test")
+      cp_r("#{upstream}/date.gemspec", "ext/date")
+      `git checkout ext/date/depend`
+      rm_rf(["ext/date/lib/date_core.bundle"])
+    when "zlib"
+      rm_rf(%w[ext/zlib test/zlib])
+      cp_r("#{upstream}/ext/zlib", "ext")
+      cp_r("#{upstream}/test/zlib", "test")
+      cp_r("#{upstream}/zlib.gemspec", "ext/zlib")
+      `git checkout ext/zlib/depend`
+    when "fcntl"
+      rm_rf(%w[ext/fcntl])
+      cp_r("#{upstream}/ext/fcntl", "ext")
+      cp_r("#{upstream}/fcntl.gemspec", "ext/fcntl")
+      `git checkout ext/fcntl/depend`
+    when "strscan"
+      rm_rf(%w[ext/strscan test/strscan])
+      cp_r("#{upstream}/ext/strscan", "ext")
+      cp_r("#{upstream}/test/strscan", "test")
+      cp_r("#{upstream}/strscan.gemspec", "ext/strscan")
+      rm_rf(%w["ext/strscan/regenc.h ext/strscan/regint.h"])
+      `git checkout ext/strscan/depend`
+    when "racc"
+      rm_rf(%w[lib/racc lib/racc.rb ext/racc test/racc])
+      cp_r(Dir.glob("#{upstream}/lib/racc*"), "lib")
+      mkdir_p("ext/racc/cparse")
+      cp_r(Dir.glob("#{upstream}/ext/racc/cparse/*"), "ext/racc/cparse")
+      cp_r("#{upstream}/test", "test/racc")
+      cp_r("#{upstream}/racc.gemspec", "lib/racc")
+      rm_rf("test/racc/lib")
+      rm_rf("lib/racc/cparse-jruby.jar")
+      `git checkout ext/racc/cparse/README ext/racc/cparse/depend`
+    when "cgi"
+      rm_rf(%w[lib/cgi.rb lib/cgi ext/cgi test/cgi])
+      cp_r("#{upstream}/ext/cgi", "ext")
+      cp_r("#{upstream}/lib", ".")
+      cp_r("#{upstream}/test/cgi", "test")
+      cp_r("#{upstream}/cgi.gemspec", "lib/cgi")
+      `git checkout ext/cgi/escape/depend`
+    when "openssl"
+      rm_rf(%w[ext/openssl test/openssl])
+      cp_r("#{upstream}/ext/openssl", "ext")
+      cp_r("#{upstream}/lib", "ext/openssl")
+      cp_r("#{upstream}/test/openssl", "test")
+      rm_rf("test/openssl/envutil.rb")
+      cp_r("#{upstream}/openssl.gemspec", "ext/openssl")
+      cp_r("#{upstream}/History.md", "ext/openssl")
+      `git checkout ext/openssl/depend`
+    when "net-protocol"
+      rm_rf(%w[lib/net/protocol.rb lib/net/net-protocol.gemspec test/net/protocol])
+      cp_r("#{upstream}/lib/net/protocol.rb", "lib/net")
+      cp_r("#{upstream}/test/net/protocol", "test/net")
+      cp_r("#{upstream}/net-protocol.gemspec", "lib/net")
+    when "net-http"
+      rm_rf(%w[lib/net/http.rb lib/net/http test/net/http])
+      cp_r("#{upstream}/lib/net/http.rb", "lib/net")
+      cp_r("#{upstream}/lib/net/http", "lib/net")
+      cp_r("#{upstream}/test/net/http", "test/net")
+      cp_r("#{upstream}/net-http.gemspec", "lib/net/http")
+    when "readline-ext"
+      rm_rf(%w[ext/readline test/readline])
+      cp_r("#{upstream}/ext/readline", "ext")
+      cp_r("#{upstream}/test/readline", "test")
+      cp_r("#{upstream}/readline-ext.gemspec", "ext/readline")
+      `git checkout ext/readline/depend`
+    when "did_you_mean"
+      rm_rf(%w[lib/did_you_mean lib/did_you_mean.rb test/did_you_mean])
+      cp_r(Dir.glob("#{upstream}/lib/did_you_mean*"), "lib")
+      cp_r("#{upstream}/did_you_mean.gemspec", "lib/did_you_mean")
+      cp_r("#{upstream}/test", "test/did_you_mean")
+      rm_rf("test/did_you_mean/lib")
+      rm_rf(%w[test/did_you_mean/tree_spell/test_explore.rb])
+    when "erb"
+      rm_rf(%w[lib/erb* test/erb libexec/erb])
+      cp_r("#{upstream}/lib/erb.rb", "lib")
+      cp_r("#{upstream}/test/erb", "test")
+      cp_r("#{upstream}/erb.gemspec", "lib")
+      cp_r("#{upstream}/libexec/erb", "libexec")
+    when "nkf"
+      rm_rf(%w[ext/nkf test/nkf])
+      cp_r("#{upstream}/ext/nkf", "ext")
+      cp_r("#{upstream}/lib", "ext/nkf")
+      cp_r("#{upstream}/test/nkf", "test")
+      cp_r("#{upstream}/nkf.gemspec", "ext/nkf")
+      `git checkout ext/nkf/depend`
+    when "syslog"
+      rm_rf(%w[ext/syslog test/syslog test/test_syslog.rb])
+      cp_r("#{upstream}/ext/syslog", "ext")
+      cp_r("#{upstream}/lib", "ext/syslog")
+      cp_r("#{upstream}/test/syslog", "test")
+      cp_r("#{upstream}/test/test_syslog.rb", "test")
+      cp_r("#{upstream}/syslog.gemspec", "ext/syslog")
+      `git checkout ext/syslog/depend`
+    when "bigdecimal"
+      rm_rf(%w[ext/bigdecimal test/bigdecimal])
+      cp_r("#{upstream}/ext/bigdecimal", "ext")
+      cp_r("#{upstream}/sample", "ext/bigdecimal")
+      cp_r("#{upstream}/lib", "ext/bigdecimal")
+      cp_r("#{upstream}/test/bigdecimal", "test")
+      cp_r("#{upstream}/bigdecimal.gemspec", "ext/bigdecimal")
+      `git checkout ext/bigdecimal/depend`
+    when "pathname"
+      rm_rf(%w[ext/pathname test/pathname])
+      cp_r("#{upstream}/ext/pathname", "ext")
+      cp_r("#{upstream}/test/pathname", "test")
+      cp_r("#{upstream}/lib", "ext/pathname")
+      cp_r("#{upstream}/pathname.gemspec", "ext/pathname")
+      `git checkout ext/pathname/depend`
+    when "digest"
+      rm_rf(%w[ext/digest test/digest])
+      cp_r("#{upstream}/ext/digest", "ext")
+      mkdir_p("ext/digest/lib/digest")
+      cp_r("#{upstream}/lib/digest.rb", "ext/digest/lib/")
+      cp_r("#{upstream}/lib/digest/version.rb", "ext/digest/lib/digest/")
+      mkdir_p("ext/digest/sha2/lib")
+      cp_r("#{upstream}/lib/digest/sha2.rb", "ext/digest/sha2/lib")
+      move("ext/digest/lib/digest/sha2", "ext/digest/sha2/lib")
+      cp_r("#{upstream}/test/digest", "test")
+      cp_r("#{upstream}/digest.gemspec", "ext/digest")
+      `git checkout ext/digest/depend ext/digest/*/depend`
+    when "set"
+      sync_lib gem, upstream
+      cp_r("#{upstream}/test", ".")
+    when "optparse"
+      sync_lib gem, upstream
+      rm_rf(%w[doc/optparse])
+      mkdir_p("doc/optparse")
+      cp_r("#{upstream}/doc/optparse", "doc")
+    when "error_highlight"
+      rm_rf(%w[lib/error_highlight lib/error_highlight.rb test/error_highlight])
+      cp_r(Dir.glob("#{upstream}/lib/error_highlight*"), "lib")
+      cp_r("#{upstream}/error_highlight.gemspec", "lib/error_highlight")
+      cp_r("#{upstream}/test", "test/error_highlight")
+    when "win32ole"
+      sync_lib gem, upstream
+      rm_rf(%w[ext/win32ole/lib])
+      Dir.mkdir(*%w[ext/win32ole/lib])
+      move("lib/win32ole/win32ole.gemspec", "ext/win32ole")
+      move(Dir.glob("lib/win32ole*"), "ext/win32ole/lib")
+    when "open3"
+      sync_lib gem, upstream
+      rm_rf("lib/open3/jruby_windows.rb")
+    when "syntax_suggest"
+      sync_lib gem, upstream
+      rm_rf(%w[spec/syntax_suggest libexec/syntax_suggest])
+      cp_r("#{upstream}/spec", "spec/syntax_suggest")
+      cp_r("#{upstream}/exe/syntax_suggest", "libexec/syntax_suggest")
+    else
+      sync_lib gem, upstream
     end
-    parser_files.each_pair do |src, dst|
-      rm_rf(src)
-      cp_r("#{upstream}/#{dst}", dst)
-    end
-    `git checkout lib/rdoc/.document`
-    rm_rf(%w[lib/rdoc/Gemfile lib/rdoc/Rakefile])
-  when "reline"
-    rm_rf(%w[lib/reline lib/reline.rb test/reline])
-    cp_r(Dir.glob("#{upstream}/lib/reline*"), "lib")
-    cp_r("#{upstream}/test/reline", "test")
-    cp_r("#{upstream}/reline.gemspec", "lib/reline")
-  when "irb"
-    rm_rf(%w[lib/irb lib/irb.rb test/irb])
-    cp_r(Dir.glob("#{upstream}/lib/irb*"), "lib")
-    cp_r("#{upstream}/test/irb", "test")
-    cp_r("#{upstream}/irb.gemspec", "lib/irb")
-    cp_r("#{upstream}/man/irb.1", "man/irb.1")
-    cp_r("#{upstream}/doc/irb", "doc")
-  when "json"
-    rm_rf(%w[ext/json test/json])
-    cp_r("#{upstream}/ext/json/ext", "ext/json")
-    cp_r("#{upstream}/tests", "test/json")
-    rm_rf("test/json/lib")
-    cp_r("#{upstream}/lib", "ext/json")
-    cp_r("#{upstream}/json.gemspec", "ext/json")
-    cp_r("#{upstream}/VERSION", "ext/json")
-    rm_rf(%w[ext/json/lib/json/ext ext/json/lib/json/pure.rb ext/json/lib/json/pure])
-    `git checkout ext/json/extconf.rb ext/json/parser/prereq.mk ext/json/generator/depend ext/json/parser/depend ext/json/depend`
-  when "psych"
-    rm_rf(%w[ext/psych test/psych])
-    cp_r("#{upstream}/ext/psych", "ext")
-    cp_r("#{upstream}/lib", "ext/psych")
-    cp_r("#{upstream}/test/psych", "test")
-    rm_rf(%w[ext/psych/lib/org ext/psych/lib/psych.jar ext/psych/lib/psych_jars.rb])
-    rm_rf(%w[ext/psych/lib/psych.{bundle,so} ext/psych/lib/2.*])
-    rm_rf(["ext/psych/yaml/LICENSE"])
-    cp_r("#{upstream}/psych.gemspec", "ext/psych")
-    `git checkout ext/psych/depend ext/psych/.gitignore`
-  when "fiddle"
-    rm_rf(%w[ext/fiddle test/fiddle])
-    cp_r("#{upstream}/ext/fiddle", "ext")
-    cp_r("#{upstream}/lib", "ext/fiddle")
-    cp_r("#{upstream}/test/fiddle", "test")
-    cp_r("#{upstream}/fiddle.gemspec", "ext/fiddle")
-    `git checkout ext/fiddle/depend`
-    rm_rf(%w[ext/fiddle/lib/fiddle.{bundle,so}])
-  when "stringio"
-    rm_rf(%w[ext/stringio test/stringio])
-    cp_r("#{upstream}/ext/stringio", "ext")
-    cp_r("#{upstream}/test/stringio", "test")
-    cp_r("#{upstream}/stringio.gemspec", "ext/stringio")
-    `git checkout ext/stringio/depend ext/stringio/README.md`
-  when "io-console"
-    rm_rf(%w[ext/io/console test/io/console])
-    cp_r("#{upstream}/ext/io/console", "ext/io")
-    cp_r("#{upstream}/test/io/console", "test/io")
-    mkdir_p("ext/io/console/lib")
-    cp_r("#{upstream}/lib/io/console", "ext/io/console/lib")
-    rm_rf("ext/io/console/lib/console/ffi")
-    cp_r("#{upstream}/io-console.gemspec", "ext/io/console")
-    `git checkout ext/io/console/depend`
-  when "io-nonblock"
-    rm_rf(%w[ext/io/nonblock test/io/nonblock])
-    cp_r("#{upstream}/ext/io/nonblock", "ext/io")
-    cp_r("#{upstream}/test/io/nonblock", "test/io")
-    cp_r("#{upstream}/io-nonblock.gemspec", "ext/io/nonblock")
-    `git checkout ext/io/nonblock/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 "etc"
-    rm_rf(%w[ext/etc test/etc])
-    cp_r("#{upstream}/ext/etc", "ext")
-    cp_r("#{upstream}/test/etc", "test")
-    cp_r("#{upstream}/etc.gemspec", "ext/etc")
-    `git checkout ext/etc/depend`
-  when "date"
-    rm_rf(%w[ext/date test/date])
-    cp_r("#{upstream}/doc/date", "doc")
-    cp_r("#{upstream}/ext/date", "ext")
-    cp_r("#{upstream}/lib", "ext/date")
-    cp_r("#{upstream}/test/date", "test")
-    cp_r("#{upstream}/date.gemspec", "ext/date")
-    `git checkout ext/date/depend`
-    rm_rf(["ext/date/lib/date_core.bundle"])
-  when "zlib"
-    rm_rf(%w[ext/zlib test/zlib])
-    cp_r("#{upstream}/ext/zlib", "ext")
-    cp_r("#{upstream}/test/zlib", "test")
-    cp_r("#{upstream}/zlib.gemspec", "ext/zlib")
-    `git checkout ext/zlib/depend`
-  when "fcntl"
-    rm_rf(%w[ext/fcntl])
-    cp_r("#{upstream}/ext/fcntl", "ext")
-    cp_r("#{upstream}/fcntl.gemspec", "ext/fcntl")
-    `git checkout ext/fcntl/depend`
-  when "strscan"
-    rm_rf(%w[ext/strscan test/strscan])
-    cp_r("#{upstream}/ext/strscan", "ext")
-    cp_r("#{upstream}/test/strscan", "test")
-    cp_r("#{upstream}/strscan.gemspec", "ext/strscan")
-    rm_rf(%w["ext/strscan/regenc.h ext/strscan/regint.h"])
-    `git checkout ext/strscan/depend`
-  when "racc"
-    rm_rf(%w[lib/racc lib/racc.rb ext/racc test/racc])
-    cp_r(Dir.glob("#{upstream}/lib/racc*"), "lib")
-    mkdir_p("ext/racc/cparse")
-    cp_r(Dir.glob("#{upstream}/ext/racc/cparse/*"), "ext/racc/cparse")
-    cp_r("#{upstream}/test", "test/racc")
-    cp_r("#{upstream}/racc.gemspec", "lib/racc")
-    rm_rf("test/racc/lib")
-    rm_rf("lib/racc/cparse-jruby.jar")
-    `git checkout ext/racc/cparse/README ext/racc/cparse/depend`
-  when "cgi"
-    rm_rf(%w[lib/cgi.rb lib/cgi ext/cgi test/cgi])
-    cp_r("#{upstream}/ext/cgi", "ext")
-    cp_r("#{upstream}/lib", ".")
-    cp_r("#{upstream}/test/cgi", "test")
-    cp_r("#{upstream}/cgi.gemspec", "lib/cgi")
-    `git checkout ext/cgi/escape/depend`
-  when "openssl"
-    rm_rf(%w[ext/openssl test/openssl])
-    cp_r("#{upstream}/ext/openssl", "ext")
-    cp_r("#{upstream}/lib", "ext/openssl")
-    cp_r("#{upstream}/test/openssl", "test")
-    rm_rf("test/openssl/envutil.rb")
-    cp_r("#{upstream}/openssl.gemspec", "ext/openssl")
-    cp_r("#{upstream}/History.md", "ext/openssl")
-    `git checkout ext/openssl/depend`
-  when "net-protocol"
-    rm_rf(%w[lib/net/protocol.rb lib/net/net-protocol.gemspec test/net/protocol])
-    cp_r("#{upstream}/lib/net/protocol.rb", "lib/net")
-    cp_r("#{upstream}/test/net/protocol", "test/net")
-    cp_r("#{upstream}/net-protocol.gemspec", "lib/net")
-  when "net-http"
-    rm_rf(%w[lib/net/http.rb lib/net/http test/net/http])
-    cp_r("#{upstream}/lib/net/http.rb", "lib/net")
-    cp_r("#{upstream}/lib/net/http", "lib/net")
-    cp_r("#{upstream}/test/net/http", "test/net")
-    cp_r("#{upstream}/net-http.gemspec", "lib/net/http")
-  when "readline-ext"
-    rm_rf(%w[ext/readline test/readline])
-    cp_r("#{upstream}/ext/readline", "ext")
-    cp_r("#{upstream}/test/readline", "test")
-    cp_r("#{upstream}/readline-ext.gemspec", "ext/readline")
-    `git checkout ext/readline/depend`
-  when "did_you_mean"
-    rm_rf(%w[lib/did_you_mean lib/did_you_mean.rb test/did_you_mean])
-    cp_r(Dir.glob("#{upstream}/lib/did_you_mean*"), "lib")
-    cp_r("#{upstream}/did_you_mean.gemspec", "lib/did_you_mean")
-    cp_r("#{upstream}/test", "test/did_you_mean")
-    rm_rf("test/did_you_mean/lib")
-    rm_rf(%w[test/did_you_mean/tree_spell/test_explore.rb])
-  when "erb"
-    rm_rf(%w[lib/erb* test/erb libexec/erb])
-    cp_r("#{upstream}/lib/erb.rb", "lib")
-    cp_r("#{upstream}/test/erb", "test")
-    cp_r("#{upstream}/erb.gemspec", "lib")
-    cp_r("#{upstream}/libexec/erb", "libexec")
-  when "nkf"
-    rm_rf(%w[ext/nkf test/nkf])
-    cp_r("#{upstream}/ext/nkf", "ext")
-    cp_r("#{upstream}/lib", "ext/nkf")
-    cp_r("#{upstream}/test/nkf", "test")
-    cp_r("#{upstream}/nkf.gemspec", "ext/nkf")
-    `git checkout ext/nkf/depend`
-  when "syslog"
-    rm_rf(%w[ext/syslog test/syslog test/test_syslog.rb])
-    cp_r("#{upstream}/ext/syslog", "ext")
-    cp_r("#{upstream}/lib", "ext/syslog")
-    cp_r("#{upstream}/test/syslog", "test")
-    cp_r("#{upstream}/test/test_syslog.rb", "test")
-    cp_r("#{upstream}/syslog.gemspec", "ext/syslog")
-    `git checkout ext/syslog/depend`
-  when "bigdecimal"
-    rm_rf(%w[ext/bigdecimal test/bigdecimal])
-    cp_r("#{upstream}/ext/bigdecimal", "ext")
-    cp_r("#{upstream}/sample", "ext/bigdecimal")
-    cp_r("#{upstream}/lib", "ext/bigdecimal")
-    cp_r("#{upstream}/test/bigdecimal", "test")
-    cp_r("#{upstream}/bigdecimal.gemspec", "ext/bigdecimal")
-    `git checkout ext/bigdecimal/depend`
-  when "pathname"
-    rm_rf(%w[ext/pathname test/pathname])
-    cp_r("#{upstream}/ext/pathname", "ext")
-    cp_r("#{upstream}/test/pathname", "test")
-    cp_r("#{upstream}/lib", "ext/pathname")
-    cp_r("#{upstream}/pathname.gemspec", "ext/pathname")
-    `git checkout ext/pathname/depend`
-  when "digest"
-    rm_rf(%w[ext/digest test/digest])
-    cp_r("#{upstream}/ext/digest", "ext")
-    mkdir_p("ext/digest/lib/digest")
-    cp_r("#{upstream}/lib/digest.rb", "ext/digest/lib/")
-    cp_r("#{upstream}/lib/digest/version.rb", "ext/digest/lib/digest/")
-    mkdir_p("ext/digest/sha2/lib")
-    cp_r("#{upstream}/lib/digest/sha2.rb", "ext/digest/sha2/lib")
-    move("ext/digest/lib/digest/sha2", "ext/digest/sha2/lib")
-    cp_r("#{upstream}/test/digest", "test")
-    cp_r("#{upstream}/digest.gemspec", "ext/digest")
-    `git checkout ext/digest/depend ext/digest/*/depend`
-  when "set"
-    sync_lib gem, upstream
-    cp_r("#{upstream}/test", ".")
-  when "optparse"
-    sync_lib gem, upstream
-    rm_rf(%w[doc/optparse])
-    mkdir_p("doc/optparse")
-    cp_r("#{upstream}/doc/optparse", "doc")
-  when "error_highlight"
-    rm_rf(%w[lib/error_highlight lib/error_highlight.rb test/error_highlight])
-    cp_r(Dir.glob("#{upstream}/lib/error_highlight*"), "lib")
-    cp_r("#{upstream}/error_highlight.gemspec", "lib/error_highlight")
-    cp_r("#{upstream}/test", "test/error_highlight")
-  when "win32ole"
-    sync_lib gem, upstream
-    rm_rf(%w[ext/win32ole/lib])
-    Dir.mkdir(*%w[ext/win32ole/lib])
-    move("lib/win32ole/win32ole.gemspec", "ext/win32ole")
-    move(Dir.glob("lib/win32ole*"), "ext/win32ole/lib")
-  when "open3"
-    sync_lib gem, upstream
-    rm_rf("lib/open3/jruby_windows.rb")
-  when "syntax_suggest"
-    sync_lib gem, upstream
-    rm_rf(%w[spec/syntax_suggest libexec/syntax_suggest])
-    cp_r("#{upstream}/spec", "spec/syntax_suggest")
-    cp_r("#{upstream}/exe/syntax_suggest", "libexec/syntax_suggest")
-  else
-    sync_lib gem, upstream
+    replace_rdoc_ref_all
   end
-  replace_rdoc_ref_all
-end
 
-IGNORE_FILE_PATTERN =
-  /\A(?:[A-Z]\w*\.(?:md|txt)
-  |[^\/]+\.yml
-  |\.git.*
-  |[A-Z]\w+file
-  |COPYING
-  |rakelib\/.*
-  )\z/mx
-
-def message_filter(repo, sha, input: ARGF)
-  log = input.read
-  log.delete!("\r")
-  repo_url = "https://github.com/#{repo}"
-  subject, log = log.split(/\n(?:[\s\t]*(?:\n|\z))/, 2)
-  conv = proc do |s|
-    mod = true if s.gsub!(/\b(?:(?i:fix(?:e[sd])?|close[sd]?|resolve[sd]?) +)\K#(?=\d+\b)|\bGH-#?(?=\d+\b)|\(\K#(?=\d+\))/) {
-      "#{repo_url}/pull/"
-    }
-    mod |= true if s.gsub!(%r{(?<![-\[\](){}\w@/])(?:(\w+(?:-\w+)*/\w+(?:-\w+)*)@)?(\h{10,40})\b}) {|c|
-      "https://github.com/#{$1 || repo}/commit/#{$2[0,12]}"
-    }
-    mod
-  end
-  subject = "[#{repo}] #{subject}"
-  subject.gsub!(/\s*\n\s*/, " ")
-  if conv[subject]
-    if subject.size > 68
-      subject.gsub!(/\G.{,67}[^\s.,][.,]*\K\s+/, "\n")
+  IGNORE_FILE_PATTERN =
+    /\A(?:[A-Z]\w*\.(?:md|txt)
+    |[^\/]+\.yml
+    |\.git.*
+    |[A-Z]\w+file
+    |COPYING
+    |rakelib\/.*
+    )\z/mx
+
+  def message_filter(repo, sha, input: ARGF)
+    log = input.read
+    log.delete!("\r")
+    repo_url = "https://github.com/#{repo}"
+    subject, log = log.split(/\n(?:[\s\t]*(?:\n|\z))/, 2)
+    conv = proc do |s|
+      mod = true if s.gsub!(/\b(?:(?i:fix(?:e[sd])?|close[sd]?|resolve[sd]?) +)\K#(?=\d+\b)|\bGH-#?(?=\d+\b)|\(\K#(?=\d+\))/) {
+        "#{repo_url}/pull/"
+      }
+      mod |= true if s.gsub!(%r{(?<![-\[\](){}\w@/])(?:(\w+(?:-\w+)*/\w+(?:-\w+)*)@)?(\h{10,40})\b}) {|c|
+        "https://github.com/#{$1 || repo}/commit/#{$2[0,12]}"
+      }
+      mod
     end
+    subject = "[#{repo}] #{subject}"
+    subject.gsub!(/\s*\n\s*/, " ")
+    if conv[subject]
+      if subject.size > 68
+        subject.gsub!(/\G.{,67}[^\s.,][.,]*\K\s+/, "\n")
+      end
+    end
+    commit_url = "#{repo_url}/commit/#{sha[0,10]}\n"
+    if log and !log.empty?
+      log.sub!(/(?<=\n)\n+\z/, '') # drop empty lines at the last
+      conv[log]
+      log.sub!(/(?:(\A\s*)|\s*\n)(?=((?i:Co-authored-by:.*\n)+)?\Z)/) {
+        ($~.begin(1) ? "" : "\n\n") + commit_url + ($~.begin(2) ? "\n" : "")
+      }
+    else
+      log = commit_url
+    end
+    print subject, "\n\n", log
   end
-  commit_url = "#{repo_url}/commit/#{sha[0,10]}\n"
-  if log and !log.empty?
-    log.sub!(/(?<=\n)\n+\z/, '') # drop empty lines at the last
-    conv[log]
-    log.sub!(/(?:(\A\s*)|\s*\n)(?=((?i:Co-authored-by:.*\n)+)?\Z)/) {
-      ($~.begin(1) ? "" : "\n\n") + commit_url + ($~.begin(2) ? "\n" : "")
-    }
-  else
-    log = commit_url
-  end
-  print subject, "\n\n", log
-end
 
-# NOTE: This method is also used by GitHub ruby/git.ruby-lang.org's bin/update-default-gem.sh
-# @param gem [String] A gem name, also used as a git remote name. REPOSITORIES converts it to the appropriate GitHub repository.
-# @param ranges [Array<String>] "before..after". Note that it will NOT sync "before" (but commits after that).
-# @param edit [TrueClass] Set true if you want to resolve conflicts. Obviously, update-default-gem.sh doesn't use this.
-def sync_default_gems_with_commits(gem, ranges, edit: nil)
-  repo = REPOSITORIES[gem.to_sym]
-  puts "Sync #{repo} with commit history."
-
-  IO.popen(%W"git remote") do |f|
-    unless f.read.split.include?(gem)
-      `git remote add #{gem} git@github.com:#{repo}.git`
+  # NOTE: This method is also used by GitHub ruby/git.ruby-lang.org's bin/update-default-gem.sh
+  # @param gem [String] A gem name, also used as a git remote name. REPOSITORIES converts it to the appropriate GitHub repository.
+  # @param ranges [Array<String>] "before..after". Note that it will NOT sync "before" (but commits after that).
+  # @param edit [TrueClass] Set true if you want to resolve conflicts. Obviously, update-default-gem.sh doesn't use this.
+  def sync_default_gems_with_commits(gem, ranges, edit: nil)
+    repo = REPOSITORIES[gem.to_sym]
+    puts "Sync #{repo} with commit history."
+
+    IO.popen(%W"git remote") do |f|
+      unless f.read.split.include?(gem)
+        `git remote add #{gem} git@github.com:#{repo}.git`
+      end
     end
-  end
-  system(*%W"git fetch --no-tags #{gem}")
+    system(*%W"git fetch --no-tags #{gem}")
 
-  if ranges == true
-    pattern = "https://github\.com/#{Regexp.quote(repo)}/commit/([0-9a-f]+)$"
-    log = IO.popen(%W"git log -E --grep=#{pattern} -n1 --format=%B", &:read)
-    ranges = ["#{log[%r[#{pattern}\n\s*(?i:co-authored-by:.*)*\s*\Z], 1]}..#{gem}/master"]
-  end
+    if ranges == true
+      pattern = "https://github\.com/#{Regexp.quote(repo)}/commit/([0-9a-f]+)$"
+      log = IO.popen(%W"git log -E --grep=#{pattern} -n1 --format=%B", &:read)
+      ranges = ["#{log[%r[#{pattern}\n\s*(?i:co-authored-by:.*)*\s*\Z], 1]}..#{gem}/master"]
+    end
+
+    commits = ranges.flat_map do |range|
+      unless range.include?("..")
+        range = "#{range}~1..#{range}"
+      end
 
-  commits = ranges.flat_map do |range|
-    unless range.include?("..")
-      range = "#{range}~1..#{range}"
+      IO.popen(%W"git log --format=%H,%s #{range} --") do |f|
+        f.read.split("\n").reverse.map{|commit| commit.split(',', 2)}
+      end
     end
 
-    IO.popen(%W"git log --format=%H,%s #{range} --") do |f|
-      f.read.split("\n").reverse.map{|commit| commit.split(',', 2)}
+    # Ignore Merge commit and insufficiency commit for ruby core repository.
+    commits.delete_if do |sha, subject|
+      files = pipe_readlines(%W"git diff-tree -z --no-commit-id --name-only -r #{sha}")
+      subject.start_with?("Merge", "Auto Merge") or files.all?(IGNORE_FILE_PATTERN)
     end
-  end
 
-  # Ignore Merge commit and insufficiency commit for ruby core repository.
-  commits.delete_if do |sha, subject|
-    files = pipe_readlines(%W"git diff-tree -z --no-commit-id --name-only -r #{sha}")
-    subject.start_with?("Merge", "Auto Merge") or files.all?(IGNORE_FILE_PATTERN)
-  end
+    if commits.empty?
+      puts "No commits to pick"
+      return true
+    end
 
-  if commits.empty?
-    puts "No commits to pick"
-    return true
-  end
+    puts "Try to pick these commits:"
+    puts commits.map{|commit| commit.join(": ")}
+    puts "----"
 
-  puts "Try to pick these commits:"
-  puts commits.map{|commit| commit.join(": ")}
-  puts "----"
-
-  failed_commits = []
-
-  ENV["FILTER_BRANCH_SQUELCH_WARNING"] = "1"
-
-  require 'shellwords'
-  filter = [
-    ENV.fetch('RUBY', 'ruby').shellescape,
-    File.realpath(__FILE__).shellescape,
-    "--message-filter",
-  ]
-  commits.each do |sha, subject|
-    puts "Pick #{sha} from #{repo}."
-
-    skipped = false
-    result = IO.popen(%W"git cherry-pick #{sha}", &:read)
-    if result =~ /nothing\ to\ commit/
-      `git reset`
-      skipped = true
-      puts "Skip empty commit #{sha}"
-    end
-    next if skipped
-
-    if result.empty?
-      skipped = true
-    elsif /^CONFLICT/ =~ result
-      result = pipe_readlines(%W"git status --porcelain -z")
-      result.map! {|line| line[/\A(?:.U|AA) (.*)/, 1]}
-      result.compact!
-      ignore, conflict = result.partition {|name| IGNORE_FILE_PATTERN =~ name}
-      unless ignore.empty?
-        system(*%W"git reset HEAD --", *ignore)
-        File.unlink(*ignore)
-        ignore = pipe_readlines(%W"git status --porcelain -z" + ignore).map! {|line| line[/\A.. (.*)/, 1]}
-        system(*%W"git checkout HEAD --", *ignore) unless ignore.empty?
+    failed_commits = []
+
+    ENV["FILTER_BRANCH_SQUELCH_WARNING"] = "1"
+
+    require 'shellwords'
+    filter = [
+      ENV.fetch('RUBY', 'ruby').shellescape,
+      File.realpath(__FILE__).shellescape,
+      "--message-filter",
+    ]
+    commits.each do |sha, subject|
+      puts "Pick #{sha} from #{repo}."
+
+      skipped = false
+      result = IO.popen(%W"git cherry-pick #{sha}", &:read)
+      if result =~ /nothing\ to\ commit/
+        `git reset`
+        skipped = true
+        puts "Skip empty commit #{sha}"
       end
-      unless conflict.empty?
-        if edit
-          case
-          when (editor = ENV["GIT_EDITOR"] and !editor.empty?)
-          when (editor = `git config core.editor` and (editor.chomp!; !editor.empty?))
-          end
-          if editor
-            system([editor, conflict].join(' '))
+      next if skipped
+
+      if result.empty?
+        skipped = true
+      elsif /^CONFLICT/ =~ result
+        result = pipe_readlines(%W"git status --porcelain -z")
+        result.map! {|line| line[/\A(?:.U|AA) (.*)/, 1]}
+        result.compact!
+        ignore, conflict = result.partition {|name| IGNORE_FILE_PATTERN =~ name}
+        unless ignore.empty?
+          system(*%W"git reset HEAD --", *ignore)
+          File.unlink(*ignore)
+          ignore = pipe_readlines(%W"git status --porcelain -z" + ignore).map! {|line| line[/\A.. (.*)/, 1]}
+          system(*%W"git checkout HEAD --", *ignore) unless ignore.empty?
+        end
+        unless conflict.empty?
+          if edit
+            case
+            when (editor = ENV["GIT_EDITOR"] and !editor.empty?)
+            when (editor = `git config core.editor` and (editor.chomp!; !editor.empty?))
+            end
+            if editor
+              system([editor, conflict].join(' '))
+            end
           end
         end
+        skipped = !system({"GIT_EDITOR"=>"true"}, *%W"git cherry-pick --no-edit --continue")
       end
-      skipped = !system({"GIT_EDITOR"=>"true"}, *%W"git cherry-pick --no-edit --continue")
-    end
 
-    if skipped
-      failed_commits << sha
-      `git reset` && `git checkout .` && `git clean -fd`
-      puts "Failed to pick #{sha}"
-      next
-    end
+      if skipped
+        failed_commits << sha
+        `git reset` && `git checkout .` && `git clean -fd`
+        puts "Failed to pick #{sha}"
+        next
+      end
 
-    head = `git log --format=%H -1 HEAD`.chomp
-    system(*%w"git reset --quiet HEAD~ --")
-    amend = replace_rdoc_ref_all
-    system(*%W"git reset --quiet #{head} --")
-    if amend
-      `git commit --amend --no-edit --all`
-    end
+      head = `git log --format=%H -1 HEAD`.chomp
+      system(*%w"git reset --quiet HEAD~ --")
+      amend = replace_rdoc_ref_all
+      system(*%W"git reset --quiet #{head} --")
+      if amend
+        `git commit --amend --no-edit --all`
+      end
 
-    puts "Update commit message: #{sha}"
+      puts "Update commit message: #{sha}"
 
-    IO.popen(%W[git filter-branch -f --msg-filter #{[filter, repo, sha].join(' ')} -- HEAD~1..HEAD], &:read)
-    unless $?.success?
-      puts "Failed to modify commit message of #{sha}"
-      break
+      IO.popen(%W[git filter-branch -f --msg-filter #{[filter, repo, sha].join(' ')} -- HEAD~1..HEAD], &:read)
+      unless $?.success?
+        puts "Failed to modify commit message of #{sha}"
+        break
+      end
     end
-  end
 
-  unless failed_commits.empty?
-    puts "---- failed commits ----"
-    puts failed_commits
-    return false
+    unless failed_commits.empty?
+      puts "---- failed commits ----"
+      puts failed_commits
+      return false
+    end
+    return true
   end
-  return true
-end
 
-def sync_lib(repo, upstream = nil)
-  unless upstream and File.directory?(upstream) or File.directory?(upstream = "../#{repo}")
-    abort %[Expected '#{upstream}' \(#{File.expand_path("#{upstream}")}\) to be a directory, but it wasn't.]
-  end
-  rm_rf(["lib/#{repo}.rb", "lib/#{repo}/*", "test/test_#{repo}.rb"])
-  cp_r(Dir.glob("#{upstream}/lib/*"), "lib")
-  tests = if File.directory?("test/#{repo}")
-            "test/#{repo}"
-          else
-            "test/test_#{repo}.rb"
-          end
-  cp_r("#{upstream}/#{tests}", "test") if File.exist?("#{upstream}/#{tests}")
-  gemspec = if File.directory?("lib/#{repo}")
-              "lib/#{repo}/#{repo}.gemspec"
+  def sync_lib(repo, upstream = nil)
+    unless upstream and File.directory?(upstream) or File.directory?(upstream = "../#{repo}")
+      abort %[Expected '#{upstream}' \(#{File.expand_path("#{upstream}")}\) to be a directory, but it wasn't.]
+    end
+    rm_rf(["lib/#{repo}.rb", "lib/#{repo}/*", "test/test_#{repo}.rb"])
+    cp_r(Dir.glob("#{upstream}/lib/*"), "lib")
+    tests = if File.directory?("test/#{repo}")
+              "test/#{repo}"
             else
-              "lib/#{repo}.gemspec"
+              "test/test_#{repo}.rb"
             end
-  cp_r("#{upstream}/#{repo}.gemspec", "#{gemspec}")
-end
-
-def update_default_gems(gem, release: false)
+    cp_r("#{upstream}/#{tests}", "test") if File.exist?("#{upstream}/#{tests}")
+    gemspec = if File.directory?("lib/#{repo}")
+                "lib/#{repo}/#{repo}.gemspec"
+              else
+                "lib/#{repo}.gemspec"
+              end
+    cp_r("#{upstream}/#{repo}.gemspec", "#{gemspec}")
+  end
 
-  author, repository = REPOSITORIES[gem.to_sym].split('/')
-  default_branch = case gem
-                  when 'syntax_suggest'
-                    "main"
-                  else
-                    "master"
-                  end
+  def update_default_gems(gem, release: false)
 
-  puts "Update #{author}/#{repository}"
+    author, repository = REPOSITORIES[gem.to_sym].split('/')
+    default_branch = case gem
+                     when 'syntax_suggest'
+                       "main"
+                     else
+                       "master"
+                     end
 
-  unless File.exist?("../../#{author}/#{repository}")
-    mkdir_p("../../#{author}")
-    `git clone git@github.com:#{author}/#{repository}.git ../../#{author}/#{repository}`
-  end
+    puts "Update #{author}/#{repository}"
 
-  Dir.chdir("../../#{author}/#{repository}") do
-    unless `git remote`.match(/ruby\-core/)
-      `git remote add ruby-core git@github.com:ruby/ruby.git`
+    unless File.exist?("../../#{author}/#{repository}")
+      mkdir_p("../../#{author}")
+      `git clone git@github.com:#{author}/#{repository}.git ../../#{author}/#{repository}`
     end
-    `git fetch ruby-core master --no-tags`
-    unless `git branch`.match(/ruby\-core/)
-      `git checkout ruby-core/master`
-      `git branch ruby-core`
-    end
-    `git checkout ruby-core`
-    `git rebase ruby-core/master`
-    `git fetch origin --tags`
 
-    if release
-      last_release = `git tag`.chomp.split.delete_if{|v| v =~ /pre|beta/ }.last
-      `git checkout #{last_release}`
-    else
-      `git checkout #{default_branch}`
-      `git rebase origin/#{default_branch}`
+    Dir.chdir("../../#{author}/#{repository}") do
+      unless `git remote`.match(/ruby\-core/)
+        `git remote add ruby-core git@github.com:ruby/ruby.git`
+      end
+      `git fetch ruby-core master --no-tags`
+      unless `git branch`.match(/ruby\-core/)
+        `git checkout ruby-core/master`
+        `git branch ruby-core`
+      end
+      `git checkout ruby-core`
+      `git rebase ruby-core/master`
+      `git fetch origin --tags`
+
+      if release
+        last_release = `git tag`.chomp.split.delete_if{|v| v =~ /pre|beta/ }.last
+        `git checkout #{last_release}`
+      else
+        `git checkout #{default_branch}`
+        `git rebase origin/#{default_branch}`
+      end
     end
   end
-end
 
-case ARGV[0]
-when "up"
-  if ARGV[1]
-    update_default_gems(ARGV[1])
-  else
-    REPOSITORIES.keys.each{|gem| update_default_gems(gem.to_s)}
-  end
-when "all"
-  if ARGV[1] == "release"
-    REPOSITORIES.keys.each do |gem|
-      update_default_gems(gem.to_s, release: true)
-      sync_default_gems(gem.to_s)
+  case ARGV[0]
+  when "up"
+    if ARGV[1]
+      update_default_gems(ARGV[1])
+    else
+      REPOSITORIES.keys.each{|gem| update_default_gems(gem.to_s)}
     end
-  else
-    REPOSITORIES.keys.each{|gem| sync_default_gems(gem.to_s)}
-  end
-when "list"
-  ARGV.shift
-  pattern = Regexp.new(ARGV.join('|'))
-  REPOSITORIES.each_pair do |name, gem|
-    next unless pattern =~ name or pattern =~ gem
-    printf "%-15s https://github.com/%s\n", name, gem
-  end
-when "--message-filter"
-  ARGV.shift
-  if ARGV.size < 2
-    abort "usage: #{$0} --message-filter repository commit-hash [input...]"
-  end
-  message_filter(*ARGV.shift(2))
-  exit
-when "rdoc-ref"
-  ARGV.shift
-  pattern = ARGV.empty? ? %w[*.c *.rb *.rdoc] : ARGV
-  result = pipe_readlines(%W"git grep -z -l -F [https://docs.ruby-lang.org/en/master/ --" + pattern)
-  result.inject(false) do |changed, file|
-    if replace_rdoc_ref(file)
-      puts "replaced rdoc-ref in #{file}"
-      changed = true
+  when "all"
+    if ARGV[1] == "release"
+      REPOSITORIES.keys.each do |gem|
+        update_default_gems(gem.to_s, release: true)
+        sync_default_gems(gem.to_s)
+      end
+    else
+      REPOSITORIES.keys.each{|gem| sync_default_gems(gem.to_s)}
     end
-    changed
-  end
-when nil, "-h", "--help"
+  when "list"
+    ARGV.shift
+    pattern = Regexp.new(ARGV.join('|'))
+    REPOSITORIES.each_pair do |name, gem|
+      next unless pattern =~ name or pattern =~ gem
+      printf "%-15s https://github.com/%s\n", name, gem
+    end
+  when "--message-filter"
+    ARGV.shift
+    if ARGV.size < 2
+      abort "usage: #{$0} --message-filter repository commit-hash [input...]"
+    end
+    message_filter(*ARGV.shift(2))
+    exit
+  when "rdoc-ref"
+    ARGV.shift
+    pattern = ARGV.empty? ? %w[*.c *.rb *.rdoc] : ARGV
+    result = pipe_readlines(%W"git grep -z -l -F [https://docs.ruby-lang.org/en/master/ --" + pattern)
+    result.inject(false) do |changed, file|
+      if replace_rdoc_ref(file)
+        puts "replaced rdoc-ref in #{file}"
+        changed = true
+      end
+      changed
+    end
+  when nil, "-h", "--help"
     puts <<-HELP
 \e[1mSync with upstream code of default libraries\e[0m
 
@@ -708,28 +708,28 @@ when nil, "-h", "--help"
   ruby #$0 list read
     HELP
 
-  exit
-else
-  while /\A-/ =~ ARGV[0]
-    case ARGV[0]
-    when "-e"
-      edit = true
-      ARGV.shift
-    when "-a"
-      auto = true
-      ARGV.shift
+    exit
+  else
+    while /\A-/ =~ ARGV[0]
+      case ARGV[0]
+      when "-e"
+        edit = true
+        ARGV.shift
+      when "-a"
+        auto = true
+        ARGV.shift
+      else
+        $stderr.puts "Unknown command line option: #{ARGV[0]}"
+        exit 1
+      end
+    end
+    gem = ARGV.shift
+    if ARGV[0]
+      exit sync_default_gems_with_commits(gem, ARGV, edit: edit)
+    elsif auto
+      exit sync_default_gems_with_commits(gem, true, edit: edit)
     else
-      $stderr.puts "Unknown command line option: #{ARGV[0]}"
-      exit 1
+      sync_default_gems(gem)
     end
-  end
-  gem = ARGV.shift
-  if ARGV[0]
-    exit sync_default_gems_with_commits(gem, ARGV, edit: edit)
-  elsif auto
-    exit sync_default_gems_with_commits(gem, true, edit: edit)
-  else
-    sync_default_gems(gem)
-  end
-end if $0 == __FILE__
+  end if $0 == __FILE__
 end