[rubygems/rubygems] Upgrade vendored libraries

To match the versions that will be included in final ruby release.

https://github.com/rubygems/rubygems/commit/84394919fb

11 files changed, 952 insertions, 223 deletions

diff --git a/lib/bundler/vendor/connection_pool/lib/connection_pool.rb b/lib/bundler/vendor/connection_pool/lib/connection_pool.rb
index ee59d32507..317088a866 100644
--- a/lib/bundler/vendor/connection_pool/lib/connection_pool.rb
+++ b/lib/bundler/vendor/connection_pool/lib/connection_pool.rb
@@ -36,14 +36,57 @@ end
 # Accepts the following options:
 # - :size - number of connections to pool, defaults to 5
 # - :timeout - amount of time to wait for a connection if none currently available, defaults to 5 seconds
+# - :auto_reload_after_fork - automatically drop all connections after fork, defaults to true
 #
 class Bundler::ConnectionPool
-  DEFAULTS = {size: 5, timeout: 5}
+  DEFAULTS = {size: 5, timeout: 5, auto_reload_after_fork: true}
 
   def self.wrap(options, &block)
     Wrapper.new(options, &block)
   end
 
+  if Process.respond_to?(:fork)
+    INSTANCES = ObjectSpace::WeakMap.new
+    private_constant :INSTANCES
+
+    def self.after_fork
+      INSTANCES.values.each do |pool|
+        next unless pool.auto_reload_after_fork
+
+        # We're on after fork, so we know all other threads are dead.
+        # All we need to do is to ensure the main thread doesn't have a
+        # checked out connection
+        pool.checkin(force: true)
+        pool.reload do |connection|
+          # Unfortunately we don't know what method to call to close the connection,
+          # so we try the most common one.
+          connection.close if connection.respond_to?(:close)
+        end
+      end
+      nil
+    end
+
+    if ::Process.respond_to?(:_fork) # MRI 3.1+
+      module ForkTracker
+        def _fork
+          pid = super
+          if pid == 0
+            Bundler::ConnectionPool.after_fork
+          end
+          pid
+        end
+      end
+      Process.singleton_class.prepend(ForkTracker)
+    end
+  else
+    INSTANCES = nil
+    private_constant :INSTANCES
+
+    def self.after_fork
+      # noop
+    end
+  end
+
   def initialize(options = {}, &block)
     raise ArgumentError, "Connection pool requires a block" unless block
 
@@ -51,10 +94,12 @@ class Bundler::ConnectionPool
 
     @size = Integer(options.fetch(:size))
     @timeout = options.fetch(:timeout)
+    @auto_reload_after_fork = options.fetch(:auto_reload_after_fork)
 
     @available = TimedStack.new(@size, &block)
     @key = :"pool-#{@available.object_id}"
     @key_count = :"pool-#{@available.object_id}-count"
+    INSTANCES[self] = self if INSTANCES
   end
 
   def with(options = {})
@@ -81,16 +126,16 @@ class Bundler::ConnectionPool
     end
   end
 
-  def checkin
+  def checkin(force: false)
     if ::Thread.current[@key]
-      if ::Thread.current[@key_count] == 1
+      if ::Thread.current[@key_count] == 1 || force
         @available.push(::Thread.current[@key])
         ::Thread.current[@key] = nil
         ::Thread.current[@key_count] = nil
       else
         ::Thread.current[@key_count] -= 1
       end
-    else
+    elsif !force
       raise Bundler::ConnectionPool::Error, "no connections are checked out"
     end
 
@@ -117,6 +162,8 @@ class Bundler::ConnectionPool
 
   # Size of this connection pool
   attr_reader :size
+  # Automatically drop all connections after fork
+  attr_reader :auto_reload_after_fork
 
   # Number of pool entries available for checkout at this instant.
   def available
diff --git a/lib/bundler/vendor/connection_pool/lib/connection_pool/version.rb b/lib/bundler/vendor/connection_pool/lib/connection_pool/version.rb
index 56ebf69902..384d6fc977 100644
--- a/lib/bundler/vendor/connection_pool/lib/connection_pool/version.rb
+++ b/lib/bundler/vendor/connection_pool/lib/connection_pool/version.rb
@@ -1,3 +1,3 @@
 class Bundler::ConnectionPool
-  VERSION = "2.3.0"
+  VERSION = "2.4.1"
 end
diff --git a/lib/bundler/vendor/fileutils/lib/fileutils.rb b/lib/bundler/vendor/fileutils/lib/fileutils.rb
index 211311c069..6db19caf6f 100644
--- a/lib/bundler/vendor/fileutils/lib/fileutils.rb
+++ b/lib/bundler/vendor/fileutils/lib/fileutils.rb
@@ -180,7 +180,7 @@ end
 # - {CVE-2004-0452}[https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0452].
 #
 module Bundler::FileUtils
-  VERSION = "1.7.0"
+  VERSION = "1.7.2"
 
   def self.private_module_function(name)   #:nodoc:
     module_function name
@@ -192,8 +192,6 @@ module Bundler::FileUtils
   #
   #   Bundler::FileUtils.pwd # => "/rdoc/fileutils"
   #
-  # Bundler::FileUtils.getwd is an alias for Bundler::FileUtils.pwd.
-  #
   # Related: Bundler::FileUtils.cd.
   #
   def pwd
@@ -235,8 +233,6 @@ module Bundler::FileUtils
   #     cd ..
   #     cd fileutils
   #
-  # Bundler::FileUtils.chdir is an alias for Bundler::FileUtils.cd.
-  #
   # Related: Bundler::FileUtils.pwd.
   #
   def cd(dir, verbose: nil, &block) # :yield: dir
@@ -515,8 +511,6 @@ module Bundler::FileUtils
   # Raises an exception if +dest+ is the path to an existing file
   # and keyword argument +force+ is not +true+.
   #
-  # Bundler::FileUtils#link is an alias for Bundler::FileUtils#ln.
-  #
   # Related: Bundler::FileUtils.link_entry (has different options).
   #
   def ln(src, dest, force: nil, noop: nil, verbose: nil)
@@ -707,8 +701,6 @@ module Bundler::FileUtils
   #     ln -sf src2.txt dest2.txt
   #     ln -s srcdir3/src0.txt srcdir3/src1.txt destdir3
   #
-  # Bundler::FileUtils.symlink is an alias for Bundler::FileUtils.ln_s.
-  #
   # Related: Bundler::FileUtils.ln_sf.
   #
   def ln_s(src, dest, force: nil, relative: false, target_directory: true, noop: nil, verbose: nil)
@@ -876,8 +868,6 @@ module Bundler::FileUtils
   #
   # Raises an exception if +src+ is a directory.
   #
-  # Bundler::FileUtils.copy is an alias for Bundler::FileUtils.cp.
-  #
   # Related: {methods for copying}[rdoc-ref:FileUtils@Copying].
   #
   def cp(src, dest, preserve: nil, noop: nil, verbose: nil)
@@ -1164,8 +1154,6 @@ module Bundler::FileUtils
   #     mv src0 dest0
   #     mv src1.txt src1 dest1
   #
-  # Bundler::FileUtils.move is an alias for Bundler::FileUtils.mv.
-  #
   def mv(src, dest, force: nil, noop: nil, verbose: nil, secure: nil)
     fu_output_message "mv#{force ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if verbose
     return if noop
@@ -1223,8 +1211,6 @@ module Bundler::FileUtils
   #
   #     rm src0.dat src0.txt
   #
-  # Bundler::FileUtils.remove is an alias for Bundler::FileUtils.rm.
-  #
   # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting].
   #
   def rm(list, force: nil, noop: nil, verbose: nil)
@@ -1250,8 +1236,6 @@ module Bundler::FileUtils
   #
   # See Bundler::FileUtils.rm for keyword arguments.
   #
-  # Bundler::FileUtils.safe_unlink is an alias for Bundler::FileUtils.rm_f.
-  #
   # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting].
   #
   def rm_f(list, noop: nil, verbose: nil)
@@ -1339,8 +1323,6 @@ module Bundler::FileUtils
   #
   # See Bundler::FileUtils.rm_r for keyword arguments.
   #
-  # Bundler::FileUtils.rmtree is an alias for Bundler::FileUtils.rm_rf.
-  #
   # Related: {methods for deleting}[rdoc-ref:FileUtils@Deleting].
   #
   def rm_rf(list, noop: nil, verbose: nil, secure: nil)
@@ -1642,7 +1624,13 @@ module Bundler::FileUtils
       st = File.stat(s)
       unless File.exist?(d) and compare_file(s, d)
         remove_file d, true
-        copy_file s, d
+        if d.end_with?('/')
+          mkdir_p d
+          copy_file s, d + File.basename(s)
+        else
+          mkdir_p File.expand_path('..', d)
+          copy_file s, d
+        end
         File.utime st.atime, st.mtime, d if preserve
         File.chmod fu_mode(mode, st), d if mode
         File.chown uid, gid, d if uid or gid
diff --git a/lib/bundler/vendor/tsort/lib/tsort.rb b/lib/bundler/vendor/tsort/lib/tsort.rb
index 4a0e1a4e25..cf8731f760 100644
--- a/lib/bundler/vendor/tsort/lib/tsort.rb
+++ b/lib/bundler/vendor/tsort/lib/tsort.rb
@@ -122,6 +122,9 @@
 #
 
 module Bundler::TSort
+
+  VERSION = "0.2.0"
+
   class Cyclic < StandardError
   end
 
diff --git a/lib/bundler/vendor/uri/lib/uri/common.rb b/lib/bundler/vendor/uri/lib/uri/common.rb
index 914a4c7581..93f4f226ad 100644
--- a/lib/bundler/vendor/uri/lib/uri/common.rb
+++ b/lib/bundler/vendor/uri/lib/uri/common.rb
@@ -68,16 +68,32 @@ module Bundler::URI
   end
   private_constant :Schemes
 
+  # Registers the given +klass+ as the class to be instantiated
+  # when parsing a \Bundler::URI with the given +scheme+:
   #
-  # Register the given +klass+ to be instantiated when parsing URLs with the given +scheme+.
-  # Note that currently only schemes which after .upcase are valid constant names
-  # can be registered (no -/+/. allowed).
+  #   Bundler::URI.register_scheme('MS_SEARCH', Bundler::URI::Generic) # => Bundler::URI::Generic
+  #   Bundler::URI.scheme_list['MS_SEARCH']                   # => Bundler::URI::Generic
   #
+  # Note that after calling String#upcase on +scheme+, it must be a valid
+  # constant name.
   def self.register_scheme(scheme, klass)
     Schemes.const_set(scheme.to_s.upcase, klass)
   end
 
-  # Returns a Hash of the defined schemes.
+  # Returns a hash of the defined schemes:
+  #
+  #   Bundler::URI.scheme_list
+  #   # =>
+  #   {"MAILTO"=>Bundler::URI::MailTo,
+  #    "LDAPS"=>Bundler::URI::LDAPS,
+  #    "WS"=>Bundler::URI::WS,
+  #    "HTTP"=>Bundler::URI::HTTP,
+  #    "HTTPS"=>Bundler::URI::HTTPS,
+  #    "LDAP"=>Bundler::URI::LDAP,
+  #    "FILE"=>Bundler::URI::File,
+  #    "FTP"=>Bundler::URI::FTP}
+  #
+  # Related: Bundler::URI.register_scheme.
   def self.scheme_list
     Schemes.constants.map { |name|
       [name.to_s.upcase, Schemes.const_get(name)]
@@ -88,9 +104,21 @@ module Bundler::URI
   private_constant :INITIAL_SCHEMES
   Ractor.make_shareable(INITIAL_SCHEMES) if defined?(Ractor)
 
+  # Returns a new object constructed from the given +scheme+, +arguments+,
+  # and +default+:
+  #
+  # - The new object is an instance of <tt>Bundler::URI.scheme_list[scheme.upcase]</tt>.
+  # - The object is initialized by calling the class initializer
+  #   using +scheme+ and +arguments+.
+  #   See Bundler::URI::Generic.new.
+  #
+  # Examples:
   #
-  # Construct a Bundler::URI instance, using the scheme to detect the appropriate class
-  # from +Bundler::URI.scheme_list+.
+  #   values = ['john.doe', 'www.example.com', '123', nil, '/forum/questions/', nil, 'tag=networking&order=newest', 'top']
+  #   Bundler::URI.for('https', *values)
+  #   # => #<Bundler::URI::HTTPS https://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top>
+  #   Bundler::URI.for('foo', *values, default: Bundler::URI::HTTP)
+  #   # => #<Bundler::URI::HTTP foo://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top>
   #
   def self.for(scheme, *arguments, default: Generic)
     const_name = scheme.to_s.upcase
@@ -121,95 +149,49 @@ module Bundler::URI
   #
   class BadURIError < Error; end
 
-  #
-  # == Synopsis
-  #
-  #   Bundler::URI::split(uri)
-  #
-  # == Args
-  #
-  # +uri+::
-  #   String with Bundler::URI.
-  #
-  # == Description
-  #
-  # Splits the string on following parts and returns array with result:
-  #
-  # * Scheme
-  # * Userinfo
-  # * Host
-  # * Port
-  # * Registry
-  # * Path
-  # * Opaque
-  # * Query
-  # * Fragment
-  #
-  # == Usage
-  #
-  #   require 'bundler/vendor/uri/lib/uri'
-  #
-  #   Bundler::URI.split("http://www.ruby-lang.org/")
-  #   # => ["http", nil, "www.ruby-lang.org", nil, nil, "/", nil, nil, nil]
+  # Returns a 9-element array representing the parts of the \Bundler::URI
+  # formed from the string +uri+;
+  # each array element is a string or +nil+:
+  #
+  #   names = %w[scheme userinfo host port registry path opaque query fragment]
+  #   values = Bundler::URI.split('https://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top')
+  #   names.zip(values)
+  #   # =>
+  #   [["scheme", "https"],
+  #    ["userinfo", "john.doe"],
+  #    ["host", "www.example.com"],
+  #    ["port", "123"],
+  #    ["registry", nil],
+  #    ["path", "/forum/questions/"],
+  #    ["opaque", nil],
+  #    ["query", "tag=networking&order=newest"],
+  #    ["fragment", "top"]]
   #
   def self.split(uri)
     RFC3986_PARSER.split(uri)
   end
 
+  # Returns a new \Bundler::URI object constructed from the given string +uri+:
   #
-  # == Synopsis
-  #
-  #   Bundler::URI::parse(uri_str)
-  #
-  # == Args
-  #
-  # +uri_str+::
-  #   String with Bundler::URI.
-  #
-  # == Description
-  #
-  # Creates one of the Bundler::URI's subclasses instance from the string.
-  #
-  # == Raises
-  #
-  # Bundler::URI::InvalidURIError::
-  #   Raised if Bundler::URI given is not a correct one.
+  #   Bundler::URI.parse('https://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top')
+  #   # => #<Bundler::URI::HTTPS https://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top>
+  #   Bundler::URI.parse('http://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top')
+  #   # => #<Bundler::URI::HTTP http://john.doe@www.example.com:123/forum/questions/?tag=networking&order=newest#top>
   #
-  # == Usage
-  #
-  #   require 'bundler/vendor/uri/lib/uri'
-  #
-  #   uri = Bundler::URI.parse("http://www.ruby-lang.org/")
-  #   # => #<Bundler::URI::HTTP http://www.ruby-lang.org/>
-  #   uri.scheme
-  #   # => "http"
-  #   uri.host
-  #   # => "www.ruby-lang.org"
-  #
-  # It's recommended to first ::escape the provided +uri_str+ if there are any
-  # invalid Bundler::URI characters.
+  # It's recommended to first ::escape string +uri+
+  # if it may contain invalid Bundler::URI characters.
   #
   def self.parse(uri)
     RFC3986_PARSER.parse(uri)
   end
 
+  # Merges the given Bundler::URI strings +str+
+  # per {RFC 2396}[https://www.rfc-editor.org/rfc/rfc2396.html].
   #
-  # == Synopsis
-  #
-  #   Bundler::URI::join(str[, str, ...])
+  # Each string in +str+ is converted to an
+  # {RFC3986 Bundler::URI}[https://www.rfc-editor.org/rfc/rfc3986.html] before being merged.
   #
-  # == Args
-  #
-  # +str+::
-  #   String(s) to work with, will be converted to RFC3986 URIs before merging.
-  #
-  # == Description
-  #
-  # Joins URIs.
-  #
-  # == Usage
-  #
-  #   require 'bundler/vendor/uri/lib/uri'
+  # Examples:
   #
   #   Bundler::URI.join("http://example.com/","main.rbx")
   #   # => #<Bundler::URI::HTTP http://example.com/main.rbx>
@@ -254,7 +236,7 @@ module Bundler::URI
   #   Bundler::URI.extract("text here http://foo.example.org/bla and here mailto:test@example.com and here also.")
   #   # => ["http://foo.example.com/bla", "mailto:test@example.com"]
   #
-  def self.extract(str, schemes = nil, &block)
+  def self.extract(str, schemes = nil, &block) # :nodoc:
     warn "Bundler::URI.extract is obsolete", uplevel: 1 if $VERBOSE
     DEFAULT_PARSER.extract(str, schemes, &block)
   end
@@ -291,7 +273,7 @@ module Bundler::URI
   #     p $&
   #   end
   #
-  def self.regexp(schemes = nil)
+  def self.regexp(schemes = nil)# :nodoc:
     warn "Bundler::URI.regexp is obsolete", uplevel: 1 if $VERBOSE
     DEFAULT_PARSER.make_regexp(schemes)
   end
@@ -314,40 +296,86 @@ module Bundler::URI
   TBLDECWWWCOMP_['+'] = ' '
   TBLDECWWWCOMP_.freeze
 
-  # Encodes given +str+ to URL-encoded form data.
+  # Returns a URL-encoded string derived from the given string +str+.
+  #
+  # The returned string:
+  #
+  # - Preserves:
+  #
+  #   - Characters <tt>'*'</tt>, <tt>'.'</tt>, <tt>'-'</tt>, and <tt>'_'</tt>.
+  #   - Character in ranges <tt>'a'..'z'</tt>, <tt>'A'..'Z'</tt>,
+  #     and <tt>'0'..'9'</tt>.
+  #
+  #   Example:
   #
-  # This method doesn't convert *, -, ., 0-9, A-Z, _, a-z, but does convert SP
-  # (ASCII space) to + and converts others to %XX.
+  #     Bundler::URI.encode_www_form_component('*.-_azAZ09')
+  #     # => "*.-_azAZ09"
   #
-  # If +enc+ is given, convert +str+ to the encoding before percent encoding.
+  # - Converts:
   #
-  # This is an implementation of
-  # https://www.w3.org/TR/2013/CR-html5-20130806/forms.html#url-encoded-form-data.
+  #   - Character <tt>' '</tt> to character <tt>'+'</tt>.
+  #   - Any other character to "percent notation";
+  #     the percent notation for character <i>c</i> is <tt>'%%%X' % c.ord</tt>.
   #
-  # See Bundler::URI.decode_www_form_component, Bundler::URI.encode_www_form.
+  #   Example:
+  #
+  #     Bundler::URI.encode_www_form_component('Here are some punctuation characters: ,;?:')
+  #     # => "Here+are+some+punctuation+characters%3A+%2C%3B%3F%3A"
+  #
+  # Encoding:
+  #
+  # - If +str+ has encoding Encoding::ASCII_8BIT, argument +enc+ is ignored.
+  # - Otherwise +str+ is converted first to Encoding::UTF_8
+  #   (with suitable character replacements),
+  #   and then to encoding +enc+.
+  #
+  # In either case, the returned string has forced encoding Encoding::US_ASCII.
+  #
+  # Related: Bundler::URI.encode_uri_component (encodes <tt>' '</tt> as <tt>'%20'</tt>).
   def self.encode_www_form_component(str, enc=nil)
     _encode_uri_component(/[^*\-.0-9A-Z_a-z]/, TBLENCWWWCOMP_, str, enc)
   end
 
-  # Decodes given +str+ of URL-encoded form data.
+  # Returns a string decoded from the given \URL-encoded string +str+.
+  #
+  # The given string is first encoded as Encoding::ASCII-8BIT (using String#b),
+  # then decoded (as below), and finally force-encoded to the given encoding +enc+.
+  #
+  # The returned string:
+  #
+  # - Preserves:
+  #
+  #   - Characters <tt>'*'</tt>, <tt>'.'</tt>, <tt>'-'</tt>, and <tt>'_'</tt>.
+  #   - Character in ranges <tt>'a'..'z'</tt>, <tt>'A'..'Z'</tt>,
+  #     and <tt>'0'..'9'</tt>.
+  #
+  #   Example:
+  #
+  #     Bundler::URI.decode_www_form_component('*.-_azAZ09')
+  #     # => "*.-_azAZ09"
+  #
+  # - Converts:
+  #
+  #   - Character <tt>'+'</tt> to character <tt>' '</tt>.
+  #   - Each "percent notation" to an ASCII character.
   #
-  # This decodes + to SP.
+  #   Example:
   #
-  # See Bundler::URI.encode_www_form_component, Bundler::URI.decode_www_form.
+  #     Bundler::URI.decode_www_form_component('Here+are+some+punctuation+characters%3A+%2C%3B%3F%3A')
+  #     # => "Here are some punctuation characters: ,;?:"
+  #
+  # Related: Bundler::URI.decode_uri_component (preserves <tt>'+'</tt>).
   def self.decode_www_form_component(str, enc=Encoding::UTF_8)
     _decode_uri_component(/\+|%\h\h/, str, enc)
   end
 
-  # Encodes +str+ using URL encoding
-  #
-  # This encodes SP to %20 instead of +.
+  # Like Bundler::URI.encode_www_form_component, except that <tt>' '</tt> (space)
+  # is encoded as <tt>'%20'</tt> (instead of <tt>'+'</tt>).
   def self.encode_uri_component(str, enc=nil)
     _encode_uri_component(/[^*\-.0-9A-Z_a-z]/, TBLENCURICOMP_, str, enc)
   end
 
-  # Decodes given +str+ of URL-encoded data.
-  #
-  # This does not decode + to SP.
+  # Like Bundler::URI.decode_www_form_component, except that <tt>'+'</tt> is preserved.
   def self.decode_uri_component(str, enc=Encoding::UTF_8)
     _decode_uri_component(/%\h\h/, str, enc)
   end
@@ -372,33 +400,104 @@ module Bundler::URI
   end
   private_class_method :_decode_uri_component
 
-  # Generates URL-encoded form data from given +enum+.
+  # Returns a URL-encoded string derived from the given
+  # {Enumerable}[rdoc-ref:Enumerable@Enumerable+in+Ruby+Classes]
+  # +enum+.
+  #
+  # The result is suitable for use as form data
+  # for an \HTTP request whose <tt>Content-Type</tt> is
+  # <tt>'application/x-www-form-urlencoded'</tt>.
+  #
+  # The returned string consists of the elements of +enum+,
+  # each converted to one or more URL-encoded strings,
+  # and all joined with character <tt>'&'</tt>.
+  #
+  # Simple examples:
+  #
+  #   Bundler::URI.encode_www_form([['foo', 0], ['bar', 1], ['baz', 2]])
+  #   # => "foo=0&bar=1&baz=2"
+  #   Bundler::URI.encode_www_form({foo: 0, bar: 1, baz: 2})
+  #   # => "foo=0&bar=1&baz=2"
+  #
+  # The returned string is formed using method Bundler::URI.encode_www_form_component,
+  # which converts certain characters:
+  #
+  #   Bundler::URI.encode_www_form('f#o': '/', 'b-r': '$', 'b z': '@')
+  #   # => "f%23o=%2F&b-r=%24&b+z=%40"
+  #
+  # When +enum+ is Array-like, each element +ele+ is converted to a field:
+  #
+  # - If +ele+ is an array of two or more elements,
+  #   the field is formed from its first two elements
+  #   (and any additional elements are ignored):
+  #
+  #     name = Bundler::URI.encode_www_form_component(ele[0], enc)
+  #     value = Bundler::URI.encode_www_form_component(ele[1], enc)
+  #     "#{name}=#{value}"
   #
-  # This generates application/x-www-form-urlencoded data defined in HTML5
-  # from given an Enumerable object.
+  #   Examples:
   #
-  # This internally uses Bundler::URI.encode_www_form_component(str).
+  #     Bundler::URI.encode_www_form([%w[foo bar], %w[baz bat bah]])
+  #     # => "foo=bar&baz=bat"
+  #     Bundler::URI.encode_www_form([['foo', 0], ['bar', :baz, 'bat']])
+  #     # => "foo=0&bar=baz"
   #
-  # This method doesn't convert the encoding of given items, so convert them
-  # before calling this method if you want to send data as other than original
-  # encoding or mixed encoding data. (Strings which are encoded in an HTML5
-  # ASCII incompatible encoding are converted to UTF-8.)
+  # - If +ele+ is an array of one element,
+  #   the field is formed from <tt>ele[0]</tt>:
   #
-  # This method doesn't handle files.  When you send a file, use
-  # multipart/form-data.
+  #     Bundler::URI.encode_www_form_component(ele[0])
   #
-  # This refers https://url.spec.whatwg.org/#concept-urlencoded-serializer
+  #   Example:
   #
-  #    Bundler::URI.encode_www_form([["q", "ruby"], ["lang", "en"]])
-  #    #=> "q=ruby&lang=en"
-  #    Bundler::URI.encode_www_form("q" => "ruby", "lang" => "en")
-  #    #=> "q=ruby&lang=en"
-  #    Bundler::URI.encode_www_form("q" => ["ruby", "perl"], "lang" => "en")
-  #    #=> "q=ruby&q=perl&lang=en"
-  #    Bundler::URI.encode_www_form([["q", "ruby"], ["q", "perl"], ["lang", "en"]])
-  #    #=> "q=ruby&q=perl&lang=en"
+  #     Bundler::URI.encode_www_form([['foo'], [:bar], [0]])
+  #     # => "foo&bar&0"
+  #
+  # - Otherwise the field is formed from +ele+:
+  #
+  #     Bundler::URI.encode_www_form_component(ele)
+  #
+  #   Example:
+  #
+  #     Bundler::URI.encode_www_form(['foo', :bar, 0])
+  #     # => "foo&bar&0"
+  #
+  # The elements of an Array-like +enum+ may be mixture:
+  #
+  #   Bundler::URI.encode_www_form([['foo', 0], ['bar', 1, 2], ['baz'], :bat])
+  #   # => "foo=0&bar=1&baz&bat"
+  #
+  # When +enum+ is Hash-like,
+  # each +key+/+value+ pair is converted to one or more fields:
+  #
+  # - If +value+ is
+  #   {Array-convertible}[rdoc-ref:implicit_conversion.rdoc@Array-Convertible+Objects],
+  #   each element +ele+ in +value+ is paired with +key+ to form a field:
+  #
+  #     name = Bundler::URI.encode_www_form_component(key, enc)
+  #     value = Bundler::URI.encode_www_form_component(ele, enc)
+  #     "#{name}=#{value}"
+  #
+  #   Example:
+  #
+  #     Bundler::URI.encode_www_form({foo: [:bar, 1], baz: [:bat, :bam, 2]})
+  #     # => "foo=bar&foo=1&baz=bat&baz=bam&baz=2"
+  #
+  # - Otherwise, +key+ and +value+ are paired to form a field:
+  #
+  #     name = Bundler::URI.encode_www_form_component(key, enc)
+  #     value = Bundler::URI.encode_www_form_component(value, enc)
+  #     "#{name}=#{value}"
+  #
+  #   Example:
+  #
+  #     Bundler::URI.encode_www_form({foo: 0, bar: 1, baz: 2})
+  #     # => "foo=0&bar=1&baz=2"
+  #
+  # The elements of a Hash-like +enum+ may be mixture:
+  #
+  #   Bundler::URI.encode_www_form({foo: [0, 1], bar: 2})
+  #   # => "foo=0&foo=1&bar=2"
   #
-  # See Bundler::URI.encode_www_form_component, Bundler::URI.decode_www_form.
   def self.encode_www_form(enum, enc=nil)
     enum.map do |k,v|
       if v.nil?
@@ -419,22 +518,39 @@ module Bundler::URI
     end.join('&')
   end
 
-  # Decodes URL-encoded form data from given +str+.
+  # Returns name/value pairs derived from the given string +str+,
+  # which must be an ASCII string.
+  #
+  # The method may be used to decode the body of Net::HTTPResponse object +res+
+  # for which <tt>res['Content-Type']</tt> is <tt>'application/x-www-form-urlencoded'</tt>.
+  #
+  # The returned data is an array of 2-element subarrays;
+  # each subarray is a name/value pair (both are strings).
+  # Each returned string has encoding +enc+,
+  # and has had invalid characters removed via
+  # {String#scrub}[rdoc-ref:String#scrub].
   #
-  # This decodes application/x-www-form-urlencoded data
-  # and returns an array of key-value arrays.
+  # A simple example:
   #
-  # This refers http://url.spec.whatwg.org/#concept-urlencoded-parser,
-  # so this supports only &-separator, and doesn't support ;-separator.
+  #   Bundler::URI.decode_www_form('foo=0&bar=1&baz')
+  #   # => [["foo", "0"], ["bar", "1"], ["baz", ""]]
   #
-  #    ary = Bundler::URI.decode_www_form("a=1&a=2&b=3")
-  #    ary                   #=> [['a', '1'], ['a', '2'], ['b', '3']]
-  #    ary.assoc('a').last   #=> '1'
-  #    ary.assoc('b').last   #=> '3'
-  #    ary.rassoc('a').last  #=> '2'
-  #    Hash[ary]             #=> {"a"=>"2", "b"=>"3"}
+  # The returned strings have certain conversions,
+  # similar to those performed in Bundler::URI.decode_www_form_component:
+  #
+  #   Bundler::URI.decode_www_form('f%23o=%2F&b-r=%24&b+z=%40')
+  #   # => [["f#o", "/"], ["b-r", "$"], ["b z", "@"]]
+  #
+  # The given string may contain consecutive separators:
+  #
+  #   Bundler::URI.decode_www_form('foo=0&&bar=1&&baz=2')
+  #   # => [["foo", "0"], ["", ""], ["bar", "1"], ["", ""], ["baz", "2"]]
+  #
+  # A different separator may be specified:
+  #
+  #   Bundler::URI.decode_www_form('foo=0--bar=1--baz', separator: '--')
+  #   # => [["foo", "0"], ["bar", "1"], ["baz", ""]]
   #
-  # See Bundler::URI.decode_www_form_component, Bundler::URI.encode_www_form.
   def self.decode_www_form(str, enc=Encoding::UTF_8, separator: '&', use__charset_: false, isindex: false)
     raise ArgumentError, "the input of #{self.name}.#{__method__} must be ASCII only string" unless str.ascii_only?
     ary = []
@@ -713,7 +829,15 @@ end # module Bundler::URI
 module Bundler
 
   #
-  # Returns +uri+ converted to an Bundler::URI object.
+  # Returns a \Bundler::URI object derived from the given +uri+,
+  # which may be a \Bundler::URI string or an existing \Bundler::URI object:
+  #
+  #   # Returns a new Bundler::URI.
+  #   uri = Bundler::URI('http://github.com/ruby/ruby')
+  #   # => #<Bundler::URI::HTTP http://github.com/ruby/ruby>
+  #   # Returns the given Bundler::URI.
+  #   Bundler::URI(uri)
+  #   # => #<Bundler::URI::HTTP http://github.com/ruby/ruby>
   #
   def URI(uri)
     if uri.is_a?(Bundler::URI::Generic)
diff --git a/lib/bundler/vendor/uri/lib/uri/generic.rb b/lib/bundler/vendor/uri/lib/uri/generic.rb
index 9ae6915826..762c425ac1 100644
--- a/lib/bundler/vendor/uri/lib/uri/generic.rb
+++ b/lib/bundler/vendor/uri/lib/uri/generic.rb
@@ -1376,6 +1376,7 @@ module Bundler::URI
       end
       str
     end
+    alias to_str to_s
 
     #
     # Compares two URIs.
diff --git a/lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb b/lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb
index a85511c146..4c9882f595 100644
--- a/lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb
+++ b/lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb
@@ -1,9 +1,73 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module Bundler::URI
   class RFC3986_Parser # :nodoc:
     # Bundler::URI defined in RFC3986
-    RFC3986_URI = /\A(?<Bundler::URI>(?<scheme>[A-Za-z][+\-.0-9A-Za-z]*+):(?<hier-part>\/\/(?<authority>(?:(?<userinfo>(?:%\h\h|[!$&-.0-;=A-Z_a-z~])*+)@)?(?<host>(?<IP-literal>\[(?:(?<IPv6address>(?:\h{1,4}:){6}(?<ls32>\h{1,4}:\h{1,4}|(?<IPv4address>(?<dec-octet>[1-9]\d|1\d{2}|2[0-4]\d|25[0-5]|\d)\.\g<dec-octet>\.\g<dec-octet>\.\g<dec-octet>))|::(?:\h{1,4}:){5}\g<ls32>|\h{1,4}?::(?:\h{1,4}:){4}\g<ls32>|(?:(?:\h{1,4}:)?\h{1,4})?::(?:\h{1,4}:){3}\g<ls32>|(?:(?:\h{1,4}:){,2}\h{1,4})?::(?:\h{1,4}:){2}\g<ls32>|(?:(?:\h{1,4}:){,3}\h{1,4})?::\h{1,4}:\g<ls32>|(?:(?:\h{1,4}:){,4}\h{1,4})?::\g<ls32>|(?:(?:\h{1,4}:){,5}\h{1,4})?::\h{1,4}|(?:(?:\h{1,4}:){,6}\h{1,4})?::)|(?<IPvFuture>v\h++\.[!$&-.0-;=A-Z_a-z~]++))\])|\g<IPv4address>|(?<reg-name>(?:%\h\h|[!$&-.0-9;=A-Z_a-z~])*+))(?::(?<port>\d*+))?)(?<path-abempty>(?:\/(?<segment>(?:%\h\h|[!$&-.0-;=@-Z_a-z~])*+))*+)|(?<path-absolute>\/(?:(?<segment-nz>(?:%\h\h|[!$&-.0-;=@-Z_a-z~])++)(?:\/\g<segment>)*+)?)|(?<path-rootless>\g<segment-nz>(?:\/\g<segment>)*+)|(?<path-empty>))(?:\?(?<query>[^#]*+))?(?:\#(?<fragment>(?:%\h\h|[!$&-.0-;=@-Z_a-z~\/?])*+))?)\z/
-    RFC3986_relative_ref = /\A(?<relative-ref>(?<relative-part>\/\/(?<authority>(?:(?<userinfo>(?:%\h\h|[!$&-.0-;=A-Z_a-z~])*+)@)?(?<host>(?<IP-literal>\[(?:(?<IPv6address>(?:\h{1,4}:){6}(?<ls32>\h{1,4}:\h{1,4}|(?<IPv4address>(?<dec-octet>[1-9]\d|1\d{2}|2[0-4]\d|25[0-5]|\d)\.\g<dec-octet>\.\g<dec-octet>\.\g<dec-octet>))|::(?:\h{1,4}:){5}\g<ls32>|\h{1,4}?::(?:\h{1,4}:){4}\g<ls32>|(?:(?:\h{1,4}:){,1}\h{1,4})?::(?:\h{1,4}:){3}\g<ls32>|(?:(?:\h{1,4}:){,2}\h{1,4})?::(?:\h{1,4}:){2}\g<ls32>|(?:(?:\h{1,4}:){,3}\h{1,4})?::\h{1,4}:\g<ls32>|(?:(?:\h{1,4}:){,4}\h{1,4})?::\g<ls32>|(?:(?:\h{1,4}:){,5}\h{1,4})?::\h{1,4}|(?:(?:\h{1,4}:){,6}\h{1,4})?::)|(?<IPvFuture>v\h++\.[!$&-.0-;=A-Z_a-z~]++))\])|\g<IPv4address>|(?<reg-name>(?:%\h\h|[!$&-.0-9;=A-Z_a-z~])++))?(?::(?<port>\d*+))?)(?<path-abempty>(?:\/(?<segment>(?:%\h\h|[!$&-.0-;=@-Z_a-z~])*+))*+)|(?<path-absolute>\/(?:(?<segment-nz>(?:%\h\h|[!$&-.0-;=@-Z_a-z~])++)(?:\/\g<segment>)*+)?)|(?<path-noscheme>(?<segment-nz-nc>(?:%\h\h|[!$&-.0-9;=@-Z_a-z~])++)(?:\/\g<segment>)*+)|(?<path-empty>))(?:\?(?<query>[^#]*+))?(?:\#(?<fragment>(?:%\h\h|[!$&-.0-;=@-Z_a-z~\/?])*+))?)\z/
+    HOST = %r[
+      (?<IP-literal>\[(?:
+          (?<IPv6address>
+            (?:\h{1,4}:){6}
+            (?<ls32>\h{1,4}:\h{1,4}
+            | (?<IPv4address>(?<dec-octet>[1-9]\d|1\d{2}|2[0-4]\d|25[0-5]|\d)
+                \.\g<dec-octet>\.\g<dec-octet>\.\g<dec-octet>)
+            )
+          | ::(?:\h{1,4}:){5}\g<ls32>
+          | \h{1,4}?::(?:\h{1,4}:){4}\g<ls32>
+          | (?:(?:\h{1,4}:)?\h{1,4})?::(?:\h{1,4}:){3}\g<ls32>
+          | (?:(?:\h{1,4}:){,2}\h{1,4})?::(?:\h{1,4}:){2}\g<ls32>
+          | (?:(?:\h{1,4}:){,3}\h{1,4})?::\h{1,4}:\g<ls32>
+          | (?:(?:\h{1,4}:){,4}\h{1,4})?::\g<ls32>
+          | (?:(?:\h{1,4}:){,5}\h{1,4})?::\h{1,4}
+          | (?:(?:\h{1,4}:){,6}\h{1,4})?::
+          )
+        | (?<IPvFuture>v\h++\.[!$&-.0-9:;=A-Z_a-z~]++)
+        )\])
+    | \g<IPv4address>
+    | (?<reg-name>(?:%\h\h|[!$&-.0-9;=A-Z_a-z~])*+)
+    ]x
+
+    USERINFO = /(?:%\h\h|[!$&-.0-9:;=A-Z_a-z~])*+/
+
+    SCHEME = %r[[A-Za-z][+\-.0-9A-Za-z]*+].source
+    SEG = %r[(?:%\h\h|[!$&-.0-9:;=@A-Z_a-z~/])].source
+    SEG_NC = %r[(?:%\h\h|[!$&-.0-9;=@A-Z_a-z~])].source
+    FRAGMENT = %r[(?:%\h\h|[!$&-.0-9:;=@A-Z_a-z~/?])*+].source
+
+    RFC3986_URI = %r[\A
+    (?<seg>#{SEG}){0}
+    (?<Bundler::URI>
+      (?<scheme>#{SCHEME}):
+      (?<hier-part>//
+        (?<authority>
+          (?:(?<userinfo>#{USERINFO.source})@)?
+          (?<host>#{HOST.source.delete(" \n")})
+          (?::(?<port>\d*+))?
+        )
+        (?<path-abempty>(?:/\g<seg>*+)?)
+      | (?<path-absolute>/((?!/)\g<seg>++)?)
+      | (?<path-rootless>(?!/)\g<seg>++)
+      | (?<path-empty>)
+      )
+      (?:\?(?<query>[^\#]*+))?
+      (?:\#(?<fragment>#{FRAGMENT}))?
+    )\z]x
+
+    RFC3986_relative_ref = %r[\A
+    (?<seg>#{SEG}){0}
+    (?<relative-ref>
+      (?<relative-part>//
+        (?<authority>
+          (?:(?<userinfo>#{USERINFO.source})@)?
+          (?<host>#{HOST.source.delete(" \n")}(?<!/))?
+          (?::(?<port>\d*+))?
+        )
+        (?<path-abempty>(?:/\g<seg>*+)?)
+      | (?<path-absolute>/\g<seg>*+)
+      | (?<path-noscheme>#{SEG_NC}++(?:/\g<seg>*+)?)
+      | (?<path-empty>)
+      )
+      (?:\?(?<query>[^#]*+))?
+      (?:\#(?<fragment>#{FRAGMENT}))?
+    )\z]x
     attr_reader :regexp
 
     def initialize
@@ -19,9 +83,9 @@ module Bundler::URI
       uri.ascii_only? or
         raise InvalidURIError, "Bundler::URI must be ascii only #{uri.dump}"
       if m = RFC3986_URI.match(uri)
-        query = m["query".freeze]
-        scheme = m["scheme".freeze]
-        opaque = m["path-rootless".freeze]
+        query = m["query"]
+        scheme = m["scheme"]
+        opaque = m["path-rootless"]
         if opaque
           opaque << "?#{query}" if query
           [ scheme,
@@ -32,35 +96,35 @@ module Bundler::URI
             nil, # path
             opaque,
             nil, # query
-            m["fragment".freeze]
+            m["fragment"]
           ]
         else # normal
           [ scheme,
-            m["userinfo".freeze],
-            m["host".freeze],
-            m["port".freeze],
+            m["userinfo"],
+            m["host"],
+            m["port"],
             nil, # registry
-            (m["path-abempty".freeze] ||
-             m["path-absolute".freeze] ||
-             m["path-empty".freeze]),
+            (m["path-abempty"] ||
+             m["path-absolute"] ||
+             m["path-empty"]),
             nil, # opaque
             query,
-            m["fragment".freeze]
+            m["fragment"]
           ]
         end
       elsif m = RFC3986_relative_ref.match(uri)
         [ nil, # scheme
-          m["userinfo".freeze],
-          m["host".freeze],
-          m["port".freeze],
+          m["userinfo"],
+          m["host"],
+          m["port"],
           nil, # registry,
-          (m["path-abempty".freeze] ||
-           m["path-absolute".freeze] ||
-           m["path-noscheme".freeze] ||
-           m["path-empty".freeze]),
+          (m["path-abempty"] ||
+           m["path-absolute"] ||
+           m["path-noscheme"] ||
+           m["path-empty"]),
           nil, # opaque
-          m["query".freeze],
-          m["fragment".freeze]
+          m["query"],
+          m["fragment"]
         ]
       else
         raise InvalidURIError, "bad Bundler::URI(is not Bundler::URI?): #{uri.inspect}"
@@ -92,14 +156,14 @@ module Bundler::URI
 
     def default_regexp # :nodoc:
       {
-        SCHEME: /\A[A-Za-z][A-Za-z0-9+\-.]*\z/,
-        USERINFO: /\A(?:%\h\h|[!$&-.0-;=A-Z_a-z~])*\z/,
-        HOST: /\A(?:(?<IP-literal>\[(?:(?<IPv6address>(?:\h{1,4}:){6}(?<ls32>\h{1,4}:\h{1,4}|(?<IPv4address>(?<dec-octet>[1-9]\d|1\d{2}|2[0-4]\d|25[0-5]|\d)\.\g<dec-octet>\.\g<dec-octet>\.\g<dec-octet>))|::(?:\h{1,4}:){5}\g<ls32>|\h{,4}::(?:\h{1,4}:){4}\g<ls32>|(?:(?:\h{1,4}:)?\h{1,4})?::(?:\h{1,4}:){3}\g<ls32>|(?:(?:\h{1,4}:){,2}\h{1,4})?::(?:\h{1,4}:){2}\g<ls32>|(?:(?:\h{1,4}:){,3}\h{1,4})?::\h{1,4}:\g<ls32>|(?:(?:\h{1,4}:){,4}\h{1,4})?::\g<ls32>|(?:(?:\h{1,4}:){,5}\h{1,4})?::\h{1,4}|(?:(?:\h{1,4}:){,6}\h{1,4})?::)|(?<IPvFuture>v\h+\.[!$&-.0-;=A-Z_a-z~]+))\])|\g<IPv4address>|(?<reg-name>(?:%\h\h|[!$&-.0-9;=A-Z_a-z~])*))\z/,
-        ABS_PATH: /\A\/(?:%\h\h|[!$&-.0-;=@-Z_a-z~])*(?:\/(?:%\h\h|[!$&-.0-;=@-Z_a-z~])*)*\z/,
-        REL_PATH: /\A(?:%\h\h|[!$&-.0-;=@-Z_a-z~])+(?:\/(?:%\h\h|[!$&-.0-;=@-Z_a-z~])*)*\z/,
-        QUERY: /\A(?:%\h\h|[!$&-.0-;=@-Z_a-z~\/?])*\z/,
-        FRAGMENT: /\A(?:%\h\h|[!$&-.0-;=@-Z_a-z~\/?])*\z/,
-        OPAQUE: /\A(?:[^\/].*)?\z/,
+        SCHEME: %r[\A#{SCHEME}\z]o,
+        USERINFO: %r[\A#{USERINFO}\z]o,
+        HOST: %r[\A#{HOST}\z]o,
+        ABS_PATH: %r[\A/#{SEG}*+\z]o,
+        REL_PATH: %r[\A(?!/)#{SEG}++\z]o,
+        QUERY: %r[\A(?:%\h\h|[!$&-.0-9:;=@A-Z_a-z~/?])*+\z],
+        FRAGMENT: %r[\A#{FRAGMENT}\z]o,
+        OPAQUE: %r[\A(?:[^/].*)?\z],
         PORT: /\A[\x09\x0a\x0c\x0d ]*+\d*[\x09\x0a\x0c\x0d ]*\z/,
       }
     end
diff --git a/lib/bundler/vendor/uri/lib/uri/version.rb b/lib/bundler/vendor/uri/lib/uri/version.rb
index 84b08eee30..1fa1c7c09a 100644
--- a/lib/bundler/vendor/uri/lib/uri/version.rb
+++ b/lib/bundler/vendor/uri/lib/uri/version.rb
@@ -1,6 +1,6 @@
 module Bundler::URI
   # :stopdoc:
-  VERSION_CODE = '001202'.freeze
+  VERSION_CODE = '001300'.freeze
   VERSION = VERSION_CODE.scan(/../).collect{|n| n.to_i}.join('.').freeze
   # :startdoc:
 end
diff --git a/lib/rubygems/optparse/lib/optparse.rb b/lib/rubygems/optparse/lib/optparse.rb
index 1e50bda769..8e700016b0 100644
--- a/lib/rubygems/optparse/lib/optparse.rb
+++ b/lib/rubygems/optparse/lib/optparse.rb
@@ -48,7 +48,7 @@
 #
 # == Gem::OptionParser
 #
-# === New to \Gem::OptionParser?
+# === New to +Gem::OptionParser+?
 #
 # See the {Tutorial}[optparse/tutorial.rdoc].
 #
@@ -152,14 +152,14 @@
 # Gem::OptionParser supports the ability to coerce command line arguments
 # into objects for us.
 #
-# Gem::OptionParser comes with a few ready-to-use kinds of  type
+# Gem::OptionParser comes with a few ready-to-use kinds of type
 # coercion. They are:
 #
-# - Date  -- Anything accepted by +Date.parse+
-# - DateTime -- Anything accepted by +DateTime.parse+
-# - Time -- Anything accepted by +Time.httpdate+ or +Time.parse+
-# - URI  -- Anything accepted by +URI.parse+
-# - Shellwords -- Anything accepted by +Shellwords.shellwords+
+# - Date  -- Anything accepted by +Date.parse+ (need to require +optparse/date+)
+# - DateTime -- Anything accepted by +DateTime.parse+ (need to require +optparse/date+)
+# - Time -- Anything accepted by +Time.httpdate+ or +Time.parse+ (need to require +optparse/time+)
+# - URI  -- Anything accepted by +URI.parse+ (need to require +optparse/uri+)
+# - Shellwords -- Anything accepted by +Shellwords.shellwords+ (need to require +optparse/shellwords+)
 # - String -- Any non-empty string
 # - Integer -- Any integer. Will convert octal. (e.g. 124, -3, 040)
 # - Float -- Any float. (e.g. 10, 3.14, -100E+13)
@@ -425,7 +425,7 @@
 # If you have any questions, file a ticket at http://bugs.ruby-lang.org.
 #
 class Gem::OptionParser
-  Gem::OptionParser::Version = "0.3.0"
+  Gem::OptionParser::Version = "0.4.0"
 
   # :stopdoc:
   NoArgument = [NO_ARGUMENT = :NONE, nil].freeze
@@ -1775,7 +1775,16 @@ XXX
   #   # params["bar"] = "x"  # --bar x
   #   # params["zot"] = "z"  # --zot Z
   #
-  def getopts(*args)
+  # Option +symbolize_names+ (boolean) specifies whether returned Hash keys should be Symbols; defaults to +false+ (use Strings).
+  #
+  #   params = ARGV.getopts("ab:", "foo", "bar:", "zot:Z;zot option", symbolize_names: true)
+  #   # params[:a] = true   # -a
+  #   # params[:b] = "1"    # -b1
+  #   # params[:foo] = "1"  # --foo
+  #   # params[:bar] = "x"  # --bar x
+  #   # params[:zot] = "z"  # --zot Z
+  #
+  def getopts(*args, symbolize_names: false)
     argv = Array === args.first ? args.shift : default_argv
     single_options, *long_options = *args
 
@@ -1804,14 +1813,14 @@ XXX
     end
 
     parse_in_order(argv, result.method(:[]=))
-    result
+    symbolize_names ? result.transform_keys(&:to_sym) : result
   end
 
   #
   # See #getopts.
   #
-  def self.getopts(*args)
-    new.getopts(*args)
+  def self.getopts(*args, symbolize_names: false)
+    new.getopts(*args, symbolize_names: symbolize_names)
   end
 
   #
@@ -2084,10 +2093,23 @@ XXX
       f |= Regexp::IGNORECASE if /i/ =~ o
       f |= Regexp::MULTILINE if /m/ =~ o
       f |= Regexp::EXTENDED if /x/ =~ o
-      k = o.delete("imx")
-      k = nil if k.empty?
+      case o = o.delete("imx")
+      when ""
+      when "u"
+        s = s.encode(Encoding::UTF_8)
+      when "e"
+        s = s.encode(Encoding::EUC_JP)
+      when "s"
+        s = s.encode(Encoding::SJIS)
+      when "n"
+        f |= Regexp::NOENCODING
+      else
+        raise Gem::OptionParser::InvalidArgument, "unknown regexp option - #{o}"
+      end
+    else
+      s ||= all
     end
-    Regexp.new(s || all, f, k)
+    Regexp.new(s, f)
   end
 
   #
@@ -2276,8 +2298,8 @@ XXX
     #   rescue Gem::OptionParser::ParseError
     #   end
     #
-    def getopts(*args)
-      options.getopts(self, *args)
+    def getopts(*args, symbolize_names: false)
+      options.getopts(self, *args, symbolize_names: symbolize_names)
     end
 
     #
diff --git a/lib/rubygems/resolv/lib/resolv.rb b/lib/rubygems/resolv/lib/resolv.rb
index 0a41cdde5c..1209d5167a 100644
--- a/lib/rubygems/resolv/lib/resolv.rb
+++ b/lib/rubygems/resolv/lib/resolv.rb
@@ -37,6 +37,8 @@ end
 
 class Gem::Resolv
 
+  VERSION = "0.3.0"
+
   ##
   # Looks up the first IP address for +name+.
 
@@ -82,8 +84,8 @@ class Gem::Resolv
   ##
   # Creates a new Gem::Resolv using +resolvers+.
 
-  def initialize(resolvers=[Hosts.new, DNS.new])
-    @resolvers = resolvers
+  def initialize(resolvers=nil, use_ipv6: nil)
+    @resolvers = resolvers || [Hosts.new, DNS.new(DNS::Config.default_config_hash.merge(use_ipv6: use_ipv6))]
   end
 
   ##
@@ -196,7 +198,7 @@ class Gem::Resolv
               next unless addr
               @addr2name[addr] = [] unless @addr2name.include? addr
               @addr2name[addr] << hostname
-              @addr2name[addr] += aliases
+              @addr2name[addr].concat(aliases)
               @name2addr[hostname] = [] unless @name2addr.include? hostname
               @name2addr[hostname] << addr
               aliases.each {|n|
@@ -310,6 +312,8 @@ class Gem::Resolv
     # String:: Path to a file using /etc/resolv.conf's format.
     # Hash:: Must contain :nameserver, :search and :ndots keys.
     # :nameserver_port can be used to specify port number of nameserver address.
+    # :raise_timeout_errors can be used to raise timeout errors
+    # as exceptions instead of treating the same as an NXDOMAIN response.
     #
     # The value of :nameserver should be an address string or
     # an array of address strings.
@@ -406,6 +410,11 @@ class Gem::Resolv
     end
 
     def use_ipv6? # :nodoc:
+      use_ipv6 = @config.use_ipv6?
+      unless use_ipv6.nil?
+        return use_ipv6
+      end
+
       begin
         list = Socket.ip_address_list
       rescue NotImplementedError
@@ -748,7 +757,7 @@ class Gem::Resolv
               next if @socks_hash[bind_host]
               begin
                 sock = UDPSocket.new(af)
-              rescue Errno::EAFNOSUPPORT
+              rescue Errno::EAFNOSUPPORT, Errno::EPROTONOSUPPORT
                 next # The kernel doesn't support the address family.
               end
               @socks << sock
@@ -965,7 +974,7 @@ class Gem::Resolv
             next unless keyword
             case keyword
             when 'nameserver'
-              nameserver += args
+              nameserver.concat(args)
             when 'domain'
               next if args.empty?
               search = [args[0]]
@@ -1004,6 +1013,7 @@ class Gem::Resolv
         @mutex.synchronize {
           unless @initialized
             @nameserver_port = []
+            @use_ipv6 = nil
             @search = nil
             @ndots = 1
             case @config_info
@@ -1028,8 +1038,12 @@ class Gem::Resolv
             if config_hash.include? :nameserver_port
               @nameserver_port = config_hash[:nameserver_port].map {|ns, port| [ns, (port || Port)] }
             end
+            if config_hash.include? :use_ipv6
+              @use_ipv6 = config_hash[:use_ipv6]
+            end
             @search = config_hash[:search] if config_hash.include? :search
             @ndots = config_hash[:ndots] if config_hash.include? :ndots
+            @raise_timeout_errors = config_hash[:raise_timeout_errors]
 
             if @nameserver_port.empty?
               @nameserver_port << ['0.0.0.0', Port]
@@ -1083,6 +1097,10 @@ class Gem::Resolv
         @nameserver_port
       end
 
+      def use_ipv6?
+        @use_ipv6
+      end
+
       def generate_candidates(name)
         candidates = nil
         name = Name.create(name)
@@ -1116,6 +1134,7 @@ class Gem::Resolv
       def resolv(name)
         candidates = generate_candidates(name)
         timeouts = @timeouts || generate_timeouts
+        timeout_error = false
         begin
           candidates.each {|candidate|
             begin
@@ -1127,11 +1146,13 @@ class Gem::Resolv
                   end
                 }
               }
+              timeout_error = true
               raise ResolvError.new("DNS resolv timeout: #{name}")
             rescue NXDomain
             end
           }
         rescue ResolvError
+          raise if @raise_timeout_errors && timeout_error
         end
       end
 
@@ -1487,14 +1508,14 @@ class Gem::Resolv
           }
         end
 
-        def put_name(d)
-          put_labels(d.to_a)
+        def put_name(d, compress: true)
+          put_labels(d.to_a, compress: compress)
         end
 
-        def put_labels(d)
+        def put_labels(d, compress: true)
           d.each_index {|i|
             domain = d[i..-1]
-            if idx = @names[domain]
+            if compress && idx = @names[domain]
               self.put_pack("n", 0xc000 | idx)
               return
             else
@@ -1518,13 +1539,15 @@ class Gem::Resolv
           id, flag, qdcount, ancount, nscount, arcount =
             msg.get_unpack('nnnnnn')
           o.id = id
+          o.tc = (flag >> 9) & 1
+          o.rcode = flag & 15
+          return o unless o.tc.zero?
+
           o.qr = (flag >> 15) & 1
           o.opcode = (flag >> 11) & 15
           o.aa = (flag >> 10) & 1
-          o.tc = (flag >> 9) & 1
           o.rd = (flag >> 8) & 1
           o.ra = (flag >> 7) & 1
-          o.rcode = flag & 15
           (1..qdcount).each {
             name, typeclass = msg.get_question
             o.add_question(name, typeclass)
@@ -1616,6 +1639,14 @@ class Gem::Resolv
           strings
         end
 
+        def get_list
+          [].tap do |values|
+            while @index < @limit
+              values << yield
+            end
+          end
+        end
+
         def get_name
           return Name.new(self.get_labels)
         end
@@ -1677,6 +1708,378 @@ class Gem::Resolv
     end
 
     ##
+    # SvcParams for service binding RRs. [RFC9460]
+
+    class SvcParams
+      include Enumerable
+
+      ##
+      # Create a list of SvcParams with the given initial content.
+      #
+      # +params+ has to be an enumerable of +SvcParam+s.
+      # If its content has +SvcParam+s with the duplicate key,
+      # the one appears last takes precedence.
+
+      def initialize(params = [])
+        @params = {}
+
+        params.each do |param|
+          add param
+        end
+      end
+
+      ##
+      # Get SvcParam for the given +key+ in this list.
+
+      def [](key)
+        @params[canonical_key(key)]
+      end
+
+      ##
+      # Get the number of SvcParams in this list.
+
+      def count
+        @params.count
+      end
+
+      ##
+      # Get whether this list is empty.
+
+      def empty?
+        @params.empty?
+      end
+
+      ##
+      # Add the SvcParam +param+ to this list, overwriting the existing one with the same key.
+
+      def add(param)
+        @params[param.class.key_number] = param
+      end
+
+      ##
+      # Remove the +SvcParam+ with the given +key+ and return it.
+
+      def delete(key)
+        @params.delete(canonical_key(key))
+      end
+
+      ##
+      # Enumerate the +SvcParam+s in this list.
+
+      def each(&block)
+        return enum_for(:each) unless block
+        @params.each_value(&block)
+      end
+
+      def encode(msg) # :nodoc:
+        @params.keys.sort.each do |key|
+          msg.put_pack('n', key)
+          msg.put_length16 do
+            @params.fetch(key).encode(msg)
+          end
+        end
+      end
+
+      def self.decode(msg) # :nodoc:
+        params = msg.get_list do
+          key, = msg.get_unpack('n')
+          msg.get_length16 do
+            SvcParam::ClassHash[key].decode(msg)
+          end
+        end
+
+        return self.new(params)
+      end
+
+      private
+
+      def canonical_key(key) # :nodoc:
+        case key
+        when Integer
+          key
+        when /\Akey(\d+)\z/
+          Integer($1)
+        when Symbol
+          SvcParam::ClassHash[key].key_number
+        else
+          raise TypeError, 'key must be either String or Symbol'
+        end
+      end
+    end
+
+
+    ##
+    # Base class for SvcParam. [RFC9460]
+
+    class SvcParam
+
+      ##
+      # Get the presentation name of the SvcParamKey.
+
+      def self.key_name
+        const_get(:KeyName)
+      end
+
+      ##
+      # Get the registered number of the SvcParamKey.
+
+      def self.key_number
+        const_get(:KeyNumber)
+      end
+
+      ClassHash = Hash.new do |h, key| # :nodoc:
+        case key
+        when Integer
+          Generic.create(key)
+        when /\Akey(?<key>\d+)\z/
+          Generic.create(key.to_int)
+        when Symbol
+          raise KeyError, "unknown key #{key}"
+        else
+          raise TypeError, 'key must be either String or Symbol'
+        end
+      end
+
+      ##
+      # Generic SvcParam abstract class.
+
+      class Generic < SvcParam
+
+        ##
+        # SvcParamValue in wire-format byte string.
+
+        attr_reader :value
+
+        ##
+        # Create generic SvcParam
+
+        def initialize(value)
+          @value = value
+        end
+
+        def encode(msg) # :nodoc:
+          msg.put_bytes(@value)
+        end
+
+        def self.decode(msg) # :nodoc:
+          return self.new(msg.get_bytes)
+        end
+
+        def self.create(key_number)
+          c = Class.new(Generic)
+          key_name = :"key#{key_number}"
+          c.const_set(:KeyName, key_name)
+          c.const_set(:KeyNumber, key_number)
+          self.const_set(:"Key#{key_number}", c)
+          ClassHash[key_name] = ClassHash[key_number] = c
+          return c
+        end
+      end
+
+      ##
+      # "mandatory" SvcParam -- Mandatory keys in service binding RR
+
+      class Mandatory < SvcParam
+        KeyName = :mandatory
+        KeyNumber = 0
+        ClassHash[KeyName] = ClassHash[KeyNumber] = self # :nodoc:
+
+        ##
+        # Mandatory keys.
+
+        attr_reader :keys
+
+        ##
+        # Initialize "mandatory" ScvParam.
+
+        def initialize(keys)
+          @keys = keys.map(&:to_int)
+        end
+
+        def encode(msg) # :nodoc:
+          @keys.sort.each do |key|
+            msg.put_pack('n', key)
+          end
+        end
+
+        def self.decode(msg) # :nodoc:
+          keys = msg.get_list { msg.get_unpack('n')[0] }
+          return self.new(keys)
+        end
+      end
+
+      ##
+      # "alpn" SvcParam -- Additional supported protocols
+
+      class ALPN < SvcParam
+        KeyName = :alpn
+        KeyNumber = 1
+        ClassHash[KeyName] = ClassHash[KeyNumber] = self # :nodoc:
+
+        ##
+        # Supported protocol IDs.
+
+        attr_reader :protocol_ids
+
+        ##
+        # Initialize "alpn" ScvParam.
+
+        def initialize(protocol_ids)
+          @protocol_ids = protocol_ids.map(&:to_str)
+        end
+
+        def encode(msg) # :nodoc:
+          msg.put_string_list(@protocol_ids)
+        end
+
+        def self.decode(msg) # :nodoc:
+          return self.new(msg.get_string_list)
+        end
+      end
+
+      ##
+      # "no-default-alpn" SvcParam -- No support for default protocol
+
+      class NoDefaultALPN < SvcParam
+        KeyName = :'no-default-alpn'
+        KeyNumber = 2
+        ClassHash[KeyName] = ClassHash[KeyNumber] = self # :nodoc:
+
+        def encode(msg) # :nodoc:
+          # no payload
+        end
+
+        def self.decode(msg) # :nodoc:
+          return self.new
+        end
+      end
+
+      ##
+      # "port" SvcParam -- Port for alternative endpoint
+
+      class Port < SvcParam
+        KeyName = :port
+        KeyNumber = 3
+        ClassHash[KeyName] = ClassHash[KeyNumber] = self # :nodoc:
+
+        ##
+        # Port number.
+
+        attr_reader :port
+
+        ##
+        # Initialize "port" ScvParam.
+
+        def initialize(port)
+          @port = port.to_int
+        end
+
+        def encode(msg) # :nodoc:
+          msg.put_pack('n', @port)
+        end
+
+        def self.decode(msg) # :nodoc:
+          port, = msg.get_unpack('n')
+          return self.new(port)
+        end
+      end
+
+      ##
+      # "ipv4hint" SvcParam -- IPv4 address hints
+
+      class IPv4Hint < SvcParam
+        KeyName = :ipv4hint
+        KeyNumber = 4
+        ClassHash[KeyName] = ClassHash[KeyNumber] = self # :nodoc:
+
+        ##
+        # Set of IPv4 addresses.
+
+        attr_reader :addresses
+
+        ##
+        # Initialize "ipv4hint" ScvParam.
+
+        def initialize(addresses)
+          @addresses = addresses.map {|address| IPv4.create(address) }
+        end
+
+        def encode(msg) # :nodoc:
+          @addresses.each do |address|
+            msg.put_bytes(address.address)
+          end
+        end
+
+        def self.decode(msg) # :nodoc:
+          addresses = msg.get_list { IPv4.new(msg.get_bytes(4)) }
+          return self.new(addresses)
+        end
+      end
+
+      ##
+      # "ipv6hint" SvcParam -- IPv6 address hints
+
+      class IPv6Hint < SvcParam
+        KeyName = :ipv6hint
+        KeyNumber = 6
+        ClassHash[KeyName] = ClassHash[KeyNumber] = self # :nodoc:
+
+        ##
+        # Set of IPv6 addresses.
+
+        attr_reader :addresses
+
+        ##
+        # Initialize "ipv6hint" ScvParam.
+
+        def initialize(addresses)
+          @addresses = addresses.map {|address| IPv6.create(address) }
+        end
+
+        def encode(msg) # :nodoc:
+          @addresses.each do |address|
+            msg.put_bytes(address.address)
+          end
+        end
+
+        def self.decode(msg) # :nodoc:
+          addresses = msg.get_list { IPv6.new(msg.get_bytes(16)) }
+          return self.new(addresses)
+        end
+      end
+
+      ##
+      # "dohpath" SvcParam -- DNS over HTTPS path template [RFC9461]
+
+      class DoHPath < SvcParam
+        KeyName = :dohpath
+        KeyNumber = 7
+        ClassHash[KeyName] = ClassHash[KeyNumber] = self # :nodoc:
+
+        ##
+        # URI template for DoH queries.
+
+        attr_reader :template
+
+        ##
+        # Initialize "dohpath" ScvParam.
+
+        def initialize(template)
+          @template = template.encode('utf-8')
+        end
+
+        def encode(msg) # :nodoc:
+          msg.put_bytes(@template)
+        end
+
+        def self.decode(msg) # :nodoc:
+          template = msg.get_bytes.force_encoding('utf-8')
+          return self.new(template)
+        end
+      end
+    end
+
+    ##
     # A DNS query abstract class.
 
     class Query
@@ -2328,7 +2731,7 @@ class Gem::Resolv
             msg.put_pack("n", @priority)
             msg.put_pack("n", @weight)
             msg.put_pack("n", @port)
-            msg.put_name(@target)
+            msg.put_name(@target, compress: false)
           end
 
           def self.decode_rdata(msg) # :nodoc:
@@ -2339,6 +2742,84 @@ class Gem::Resolv
             return self.new(priority, weight, port, target)
           end
         end
+
+        ##
+        # Common implementation for SVCB-compatible resource records.
+
+        class ServiceBinding
+
+          ##
+          # Create a service binding resource record.
+
+          def initialize(priority, target, params = [])
+            @priority = priority.to_int
+            @target = Name.create(target)
+            @params = SvcParams.new(params)
+          end
+
+          ##
+          # The priority of this target host.
+          #
+          # The range is 0-65535.
+          # If set to 0, this RR is in AliasMode. Otherwise, it is in ServiceMode.
+
+          attr_reader :priority
+
+          ##
+          # The domain name of the target host.
+
+          attr_reader :target
+
+          ##
+          # The service paramters for the target host.
+
+          attr_reader :params
+
+          ##
+          # Whether this RR is in AliasMode.
+
+          def alias_mode?
+            self.priority == 0
+          end
+
+          ##
+          # Whether this RR is in ServiceMode.
+
+          def service_mode?
+            !alias_mode?
+          end
+
+          def encode_rdata(msg) # :nodoc:
+            msg.put_pack("n", @priority)
+            msg.put_name(@target, compress: false)
+            @params.encode(msg)
+          end
+
+          def self.decode_rdata(msg) # :nodoc:
+            priority, = msg.get_unpack("n")
+            target    = msg.get_name
+            params    = SvcParams.decode(msg)
+            return self.new(priority, target, params)
+          end
+        end
+
+        ##
+        # SVCB resource record [RFC9460]
+
+        class SVCB < ServiceBinding
+          TypeValue = 64
+          ClassValue = IN::ClassValue
+          ClassHash[[TypeValue, ClassValue]] = self # :nodoc:
+        end
+
+        ##
+        # HTTPS resource record [RFC9460]
+
+        class HTTPS < ServiceBinding
+          TypeValue = 65
+          ClassValue = IN::ClassValue
+          ClassHash[[TypeValue, ClassValue]] = self # :nodoc:
+        end
       end
     end
   end
@@ -2558,11 +3039,7 @@ class Gem::Resolv
     attr_reader :address
 
     def to_s # :nodoc:
-      address = sprintf("%x:%x:%x:%x:%x:%x:%x:%x", *@address.unpack("nnnnnnnn"))
-      unless address.sub!(/(^|:)0(:0)+(:|$)/, '::')
-        address.sub!(/(^|:)0(:|$)/, '::')
-      end
-      return address
+      sprintf("%x:%x:%x:%x:%x:%x:%x:%x", *@address.unpack("nnnnnnnn")).sub(/(^|:)0(:0)+(:|$)/, '::')
     end
 
     def inspect # :nodoc:
diff --git a/lib/rubygems/tsort/lib/tsort.rb b/lib/rubygems/tsort/lib/tsort.rb
index f825f14257..05f3683d38 100644
--- a/lib/rubygems/tsort/lib/tsort.rb
+++ b/lib/rubygems/tsort/lib/tsort.rb
@@ -122,6 +122,9 @@
 #
 
 module Gem::TSort
+
+  VERSION = "0.2.0"
+
   class Cyclic < StandardError
   end