* lib/rubygems.rb, lib/rubygems/*, test/rubygems/*: Update rubygems-2.5.2.

It supports to enable frozen string literal and add `--norc` option for
  disable to `.gemrc` configuration.
  See 2.5.2 release notes for other fixes and enhancements.
  a8aa3bac72/History.txt (L3)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53707 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,11 @@
+Mon Feb  1 21:41:58 2016  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* lib/rubygems.rb, lib/rubygems/*, test/rubygems/*: Update rubygems-2.5.2.
+	  It supports to enable frozen string literal and add `--norc` option for
+	  disable to `.gemrc` configuration.
+	  See 2.5.2 release notes for other fixes and enhancements.
+	  https://github.com/rubygems/rubygems/blob/a8aa3bac723f045c52471c7b9328310a048561e0/History.txt#L3
+
 Sun Jan 31 12:33:13 2016  Dan Kreiger  <dan@dankreiger.com>
 
 	* test/drb/ut_large.rb (multiply, avg, median): add additional

lib/rubygems.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 # -*- ruby -*-
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
@@ -10,7 +10,7 @@ require 'rbconfig'
 require 'thread'
 
 module Gem
-  VERSION = '2.5.1'
+  VERSION = '2.5.2'
 end
 
 # Must be first since it unloads the prelude from 1.9.2
@@ -239,7 +239,7 @@ module Gem
     specs = dep.matching_specs(true)
 
     raise Gem::GemNotFoundException,
-          "can't find gem #{name} (#{requirements})" if specs.empty?
+          "can't find gem #{dep}" if specs.empty?
 
     specs = specs.find_all { |spec|
       spec.executables.include? exec_name

lib/rubygems/available_set.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 class Gem::AvailableSet
 
   include Enumerable

lib/rubygems/basic_specification.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # BasicSpecification is an abstract class which implements some common code
 # used by both Specification and StubSpecification.
@@ -125,9 +125,9 @@ class Gem::BasicSpecification
 
   def full_name
     if platform == Gem::Platform::RUBY or platform.nil? then
-      "#{name}-#{version}".untaint
+      "#{name}-#{version}".dup.untaint
     else
-      "#{name}-#{version}-#{platform}".untaint
+      "#{name}-#{version}-#{platform}".dup.untaint
     end
   end
 
@@ -282,7 +282,7 @@ class Gem::BasicSpecification
              self.require_paths.first
            end
 
-    "#{self.full_gem_path}/#{dirs}".untaint
+    "#{self.full_gem_path}/#{dirs}".dup.untaint
   end
 
   ##
@@ -326,4 +326,3 @@ class Gem::BasicSpecification
   end
 
 end
-

lib/rubygems/command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.
@@ -154,7 +154,7 @@ class Gem::Command
 
   def show_lookup_failure(gem_name, version, errors, domain)
     if errors and !errors.empty?
-      msg = "Could not find a valid gem '#{gem_name}' (#{version}), here is why:\n"
+      msg = "Could not find a valid gem '#{gem_name}' (#{version}), here is why:\n".dup
       errors.each { |x| msg << "          #{x.wordy}\n" }
       alert_error msg
     else
@@ -540,6 +540,11 @@ class Gem::Command
                     'Turn on Ruby debugging') do
   end
 
+  add_common_option('--norc',
+                    'Avoid loading any .gemrc file') do
+  end
+
+
   # :stopdoc:
 
   HELP = <<-HELP
@@ -580,4 +585,3 @@ end
 
 module Gem::Commands
 end
-

lib/rubygems/command_manager.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.

lib/rubygems/commands/build_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/package'
 
@@ -42,6 +42,10 @@ with gem spec:
   def execute
     gemspec = get_one_gem_name
 
+    unless File.exist? gemspec
+      gemspec += '.gemspec' if File.exist? gemspec + '.gemspec'
+    end
+
     if File.exist? gemspec then
       spec = Gem::Specification.load gemspec
 

lib/rubygems/commands/cert_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/security'
 begin

lib/rubygems/commands/check_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/version_option'
 require 'rubygems/validator'

lib/rubygems/commands/cleanup_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/dependency_list'
 require 'rubygems/uninstaller'

lib/rubygems/commands/contents_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'English'
 require 'rubygems/command'
 require 'rubygems/version_option'

lib/rubygems/commands/dependency_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/local_remote_options'
 require 'rubygems/version_option'
@@ -100,7 +100,7 @@ use with other commands.
   end
 
   def display_readable specs, reverse # :nodoc:
-    response = ''
+    response = String.new
 
     specs.each do |spec|
       response << print_dependencies(spec)
@@ -153,7 +153,7 @@ use with other commands.
   end
 
   def print_dependencies(spec, level = 0) # :nodoc:
-    response = ''
+    response = String.new
     response << '  ' * level + "Gem #{spec.full_name}\n"
     unless spec.dependencies.empty? then
       spec.dependencies.sort_by { |dep| dep.name }.each do |dep|

lib/rubygems/commands/environment_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 
 class Gem::Commands::EnvironmentCommand < Gem::Command
@@ -72,7 +72,7 @@ lib/rubygems/defaults/operating_system.rb
   end
 
   def execute
-    out = ''
+    out = String.new
     arg = options[:args][0]
     out <<
       case arg
@@ -104,7 +104,7 @@ lib/rubygems/defaults/operating_system.rb
   end
 
   def show_environment # :nodoc:
-    out = "RubyGems Environment:\n"
+    out = "RubyGems Environment:\n".dup
 
     out << "  - RUBYGEMS VERSION: #{Gem::VERSION}\n"
 
@@ -158,4 +158,3 @@ lib/rubygems/defaults/operating_system.rb
   end
 
 end
-

lib/rubygems/commands/fetch_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/local_remote_options'
 require 'rubygems/version_option'

lib/rubygems/commands/generate_index_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/indexer'
 

lib/rubygems/commands/help_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 
 class Gem::Commands::HelpCommand < Gem::Command

lib/rubygems/commands/install_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/install_update_options'
 require 'rubygems/dependency_installer'

lib/rubygems/commands/list_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/commands/query_command'
 

lib/rubygems/commands/lock_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 
 class Gem::Commands::LockCommand < Gem::Command

lib/rubygems/commands/mirror_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 
 unless defined? Gem::Commands::MirrorCommand

lib/rubygems/commands/open_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'English'
 require 'rubygems/command'
 require 'rubygems/version_option'

lib/rubygems/commands/outdated_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/local_remote_options'
 require 'rubygems/spec_fetcher'

lib/rubygems/commands/owner_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/local_remote_options'
 require 'rubygems/gemcutter_utilities'

lib/rubygems/commands/pristine_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/package'
 require 'rubygems/installer'

lib/rubygems/commands/push_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/local_remote_options'
 require 'rubygems/gemcutter_utilities'

lib/rubygems/commands/query_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/local_remote_options'
 require 'rubygems/spec_fetcher'
@@ -50,6 +50,12 @@ class Gem::Commands::QueryCommand < Gem::Command
       options[:all] = value
     end
 
+    add_option('-e', '--exact',
+               'Name of gem(s) to query on matches the',
+               'provided STRING') do |value, options|
+      options[:exact] = value
+    end
+
     add_option(      '--[no-]prerelease',
                'Display prerelease versions') do |value, options|
       options[:prerelease] = value
@@ -79,7 +85,8 @@ is too hard to use.
     elsif !options[:name].source.empty?
       name = Array(options[:name])
     else
-      name = options[:args].to_a.map{|arg| /#{arg}/i }
+      args = options[:args].to_a
+      name = options[:exact] ? args : args.map{|arg| /#{arg}/i }
     end
 
     prerelease = options[:prerelease]
@@ -162,7 +169,7 @@ is too hard to use.
                :latest
              end
 
-      if name.source.empty?
+      if name.respond_to?(:source) && name.source.empty?
         spec_tuples = fetcher.detect(type) { true }
       else
         spec_tuples = fetcher.detect(type) do |name_tuple|
@@ -277,7 +284,7 @@ is too hard to use.
   end
 
   def spec_authors entry, spec
-    authors = "Author#{spec.authors.length > 1 ? 's' : ''}: "
+    authors = "Author#{spec.authors.length > 1 ? 's' : ''}: ".dup
     authors << spec.authors.join(', ')
     entry << format_text(authors, 68, 4)
   end
@@ -291,7 +298,7 @@ is too hard to use.
   def spec_license entry, spec
     return if spec.license.nil? or spec.license.empty?
 
-    licenses = "License#{spec.licenses.length > 1 ? 's' : ''}: "
+    licenses = "License#{spec.licenses.length > 1 ? 's' : ''}: ".dup
     licenses << spec.licenses.join(', ')
     entry << "\n" << format_text(licenses, 68, 4)
   end
@@ -341,4 +348,3 @@ is too hard to use.
   end
 
 end
-

lib/rubygems/commands/rdoc_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/version_option'
 require 'rubygems/rdoc'

lib/rubygems/commands/search_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/commands/query_command'
 

lib/rubygems/commands/server_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/server'
 

lib/rubygems/commands/setup_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 
 ##

lib/rubygems/commands/sources_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/remote_fetcher'
 require 'rubygems/spec_fetcher'

lib/rubygems/commands/specification_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/local_remote_options'
 require 'rubygems/version_option'

lib/rubygems/commands/stale_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 
 class Gem::Commands::StaleCommand < Gem::Command

lib/rubygems/commands/uninstall_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/version_option'
 require 'rubygems/uninstaller'

lib/rubygems/commands/unpack_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/installer'
 require 'rubygems/version_option'

lib/rubygems/commands/update_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/command_manager'
 require 'rubygems/dependency_installer'

lib/rubygems/commands/which_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 
 class Gem::Commands::WhichCommand < Gem::Command

lib/rubygems/commands/yank_command.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 require 'rubygems/local_remote_options'
 require 'rubygems/version_option'
@@ -32,7 +32,7 @@ as the reason for the removal request.
   end
 
   def usage # :nodoc:
-    "#{program_name} GEM -v VERSION [-p PLATFORM] [--undo] [--key KEY_NAME]"
+    "#{program_name} GEM -v VERSION [-p PLATFORM] [--key KEY_NAME] [--host HOST]"
   end
 
   def initialize
@@ -41,25 +41,25 @@ as the reason for the removal request.
     add_version_option("remove")
     add_platform_option("remove")
 
-    add_option('--undo') do |value, options|
-      options[:undo] = true
+    add_option('--host HOST',
+               'Yank from another gemcutter-compatible host') do |value, options|
+      options[:host] = value
     end
 
     add_key_option
+    @host = nil
   end
 
   def execute
-    sign_in
+    @host = options[:host]
+
+    sign_in @host
 
     version   = get_version_from_requirements(options[:version])
     platform  = get_platform_from_requirements(options)
 
     if version then
-      if options[:undo] then
-        unyank_gem(version, platform)
-      else
-        yank_gem(version, platform)
-      end
+      yank_gem(version, platform)
     else
       say "A version argument is required: #{usage}"
       terminate_interaction
@@ -71,16 +71,11 @@ as the reason for the removal request.
     yank_api_request(:delete, version, platform, "api/v1/gems/yank")
   end
 
-  def unyank_gem(version, platform)
-    say "Unyanking gem from #{host}..."
-    yank_api_request(:put, version, platform, "api/v1/gems/unyank")
-  end
-
   private
 
   def yank_api_request(method, version, platform, api)
     name = get_one_gem_name
-    response = rubygems_api_request(method, api) do |request|
+    response = rubygems_api_request(method, api, host) do |request|
       request.add_field("Authorization", api_key)
 
       data = {

lib/rubygems/compatibility.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 # :stopdoc:
 
 #--

lib/rubygems/config_file.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.
@@ -201,11 +201,12 @@ class Gem::ConfigFile
       result.merge load_file file
     end
 
-
     @hash = operating_system_config.merge platform_config
-    @hash = @hash.merge system_config
-    @hash = @hash.merge user_config
-    @hash = @hash.merge environment_config
+    unless arg_list.index '--norc'
+      @hash = @hash.merge system_config
+      @hash = @hash.merge user_config
+      @hash = @hash.merge environment_config
+    end
 
     # HACK these override command-line args, which is bad
     @backtrace                  = @hash[:backtrace]                  if @hash.key? :backtrace

lib/rubygems/core_ext/kernel_gem.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # RubyGems adds the #gem method to allow activation of specific gem versions
 # and overrides the #require method on Kernel to make gems appear as if they

lib/rubygems/core_ext/kernel_require.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.

lib/rubygems/defaults.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module Gem
   DEFAULT_HOST = "https://rubygems.org"
 

lib/rubygems/dependency.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # The Dependency class holds a Gem name and a Gem::Requirement.
 
@@ -307,9 +307,9 @@ class Gem::Dependency
 
       if specs.empty?
         total = Gem::Specification.to_a.size
-        msg   = "Could not find '#{name}' (#{requirement}) among #{total} total gem(s)\n"
+        msg   = "Could not find '#{name}' (#{requirement}) among #{total} total gem(s)\n".dup
       else
-        msg   = "Could not find '#{name}' (#{requirement}) - did find: [#{specs.join ','}]\n"
+        msg   = "Could not find '#{name}' (#{requirement}) - did find: [#{specs.join ','}]\n".dup
       end
       msg << "Checked in 'GEM_PATH=#{Gem.path.join(File::PATH_SEPARATOR)}', execute `gem env` for more information"
 

lib/rubygems/dependency_installer.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems'
 require 'rubygems/dependency_list'
 require 'rubygems/package'

lib/rubygems/dependency_list.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.

lib/rubygems/deprecate.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # Provides a single method +deprecate+ to be used to declare when
 # something is going away.

lib/rubygems/doctor.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems'
 require 'rubygems/user_interaction'
 

lib/rubygems/errors.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # This file contains all the various exceptions and other errors that are used
 # inside of RubyGems.

lib/rubygems/exceptions.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 # TODO: the documentation in here is terrible.
 #
 # Each exception needs a brief description and the scenarios where it is
@@ -138,7 +138,7 @@ class Gem::ImpossibleDependenciesError < Gem::Exception
     requester  = requester ? requester.spec.full_name : 'The user'
     dependency = @request.dependency
 
-    message = "#{requester} requires #{dependency} but it conflicted:\n"
+    message = "#{requester} requires #{dependency} but it conflicted:\n".dup
 
     @conflicts.each do |_, conflict|
       message << conflict.explanation
@@ -268,4 +268,3 @@ end
 # Backwards compatible typo'd exception class for early RubyGems 2.0.x
 
 Gem::UnsatisfiableDepedencyError = Gem::UnsatisfiableDependencyError # :nodoc:
-

lib/rubygems/ext.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.

lib/rubygems/ext/build_error.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # Raised when there is an error while building extensions.
 

lib/rubygems/ext/builder.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.

lib/rubygems/ext/cmake_builder.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/command'
 
 class Gem::Ext::CmakeBuilder < Gem::Ext::Builder

lib/rubygems/ext/configure_builder.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.

lib/rubygems/ext/ext_conf_builder.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.
@@ -12,9 +12,20 @@ class Gem::Ext::ExtConfBuilder < Gem::Ext::Builder
   FileEntry = FileUtils::Entry_ # :nodoc:
 
   def self.build(extension, directory, dest_path, results, args=[], lib_dir=nil)
-    # relative path required as some versions of mktmpdir return an absolute
-    # path which breaks make if it includes a space in the name
-    tmp_dest = get_relative_path(Dir.mktmpdir(".gem.", "."))
+    tmp_dest = Dir.mktmpdir(".gem.", ".")
+
+    # Some versions of `mktmpdir` return absolute paths, which will break make
+    # if the paths contain spaces. However, on Ruby 1.9.x on Windows, relative
+    # paths cause all C extension builds to fail.
+    #
+    # As such, we convert to a relative path unless we are using Ruby 1.9.x on
+    # Windows. This means that when using Ruby 1.9.x on Windows, paths with
+    # spaces do not work.
+    #
+    # Details: https://github.com/rubygems/rubygems/issues/977#issuecomment-171544940
+    #
+    # TODO: Make this unconditional when rubygems no longer supports Ruby 1.9.x.
+    tmp_dest = get_relative_path(tmp_dest) unless Gem.win_platform? && RUBY_VERSION <= '2.0'
 
     t = nil
     Tempfile.open %w"siteconf .rb", "." do |siteconf|
@@ -81,4 +92,3 @@ class Gem::Ext::ExtConfBuilder < Gem::Ext::Builder
   end
 
 end
-

lib/rubygems/ext/rake_builder.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.

lib/rubygems/gem_runner.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.

lib/rubygems/gemcutter_utilities.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/remote_fetcher'
 
 ##
@@ -69,9 +69,14 @@ module Gem::GemcutterUtilities
       terminate_interaction 1 # TODO: question this
     end
 
-    if allowed_push_host and self.host != allowed_push_host
-      alert_error "#{self.host.inspect} is not allowed by the gemspec, which only allows #{allowed_push_host.inspect}"
-      terminate_interaction 1
+    if allowed_push_host
+      allowed_host_uri = URI.parse(allowed_push_host)
+      host_uri         = URI.parse(self.host)
+
+      unless (host_uri.scheme == allowed_host_uri.scheme) && (host_uri.host == allowed_host_uri.host)
+        alert_error "#{self.host.inspect} is not allowed by the gemspec, which only allows #{allowed_push_host.inspect}"
+        terminate_interaction 1
+      end
     end
 
     uri = URI.parse "#{self.host}/#{path}"

lib/rubygems/indexer.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems'
 require 'rubygems/package'
 require 'time'

lib/rubygems/install_default_message.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems'
 require 'rubygems/user_interaction'
 

lib/rubygems/install_message.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems'
 require 'rubygems/user_interaction'
 

lib/rubygems/install_update_options.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.
@@ -174,6 +174,11 @@ module Gem::InstallUpdateOptions
                 "meet version requirements") do |value, options|
       options[:minimal_deps] = true
     end
+
+    add_option(:"Install/Update", "--[no-]post-install-message",
+                "Print post install message") do |value, options|
+      options[:post_install_message] = value
+    end
   end
 
   ##

lib/rubygems/installer.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.
@@ -213,7 +213,13 @@ class Gem::Installer
       next unless io.gets =~ /This file was generated by RubyGems/
 
       ruby_executable = true
-      existing = io.read.slice(/^gem (['"])(.*?)(\1),/, 2)
+      existing = io.read.slice(%r{
+          ^(
+            gem \s |
+            load \s Gem\.bin_path\(
+          )
+          (['"])(.*?)(\2),
+        }x, 3)
     end
 
     return if spec.name == existing
@@ -221,7 +227,7 @@ class Gem::Installer
     # somebody has written to RubyGems' directory, overwrite, too bad
     return if Gem.default_bindir != @bin_dir and not ruby_executable
 
-    question = "#{spec.name}'s executable \"#{filename}\" conflicts with "
+    question = "#{spec.name}'s executable \"#{filename}\" conflicts with ".dup
 
     if ruby_executable then
       question << existing
@@ -297,7 +303,7 @@ class Gem::Installer
       write_cache_file
     end
 
-    say spec.post_install_message unless spec.post_install_message.nil?
+    say spec.post_install_message if options[:post_install_message] && !spec.post_install_message.nil?
 
     Gem::Installer.install_lock.synchronize { Gem::Specification.reset }
 
@@ -627,7 +633,8 @@ class Gem::Installer
       :bin_dir      => nil,
       :env_shebang  => false,
       :force        => false,
-      :only_install_dir => false
+      :only_install_dir => false,
+      :post_install_message => true
     }.merge options
 
     @env_shebang         = options[:env_shebang]
@@ -712,7 +719,6 @@ if ARGV.first
   end
 end
 
-gem '#{spec.name}', version
 load Gem.bin_path('#{spec.name}', '#{bin_file_name}', version)
 TEXT
   end

lib/rubygems/installer_test_case.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/test_case'
 require 'rubygems/installer'
 

lib/rubygems/local_remote_options.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.
@@ -24,7 +24,7 @@ module Gem::LocalRemoteOptions
         raise OptionParser::InvalidArgument, value
       end
 
-      unless ['http', 'https', 'file'].include?(uri.scheme)
+      unless ['http', 'https', 'file', 's3'].include?(uri.scheme)
          raise OptionParser::InvalidArgument, value
       end
 

lib/rubygems/mock_gem_ui.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'stringio'
 require 'rubygems/user_interaction'
 

lib/rubygems/name_tuple.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 #
 # Represents a gem of name +name+ at +version+ of +platform+. These
@@ -54,7 +54,7 @@ class Gem::NameTuple
       "#{@name}-#{@version}"
     else
       "#{@name}-#{@version}-#{@platform}"
-    end.untaint
+    end.dup.untaint
   end
 
   ##

lib/rubygems/package.rb

@@ -1,5 +1,5 @@
+# frozen_string_literal: true
 # -*- coding: utf-8 -*-
-# frozen_string_literal: false
 #--
 # Copyright (C) 2004 Mauricio Julio Fernández Pradier
 # See LICENSE.txt for additional licensing information.
@@ -59,7 +59,7 @@ class Gem::Package
       if source
         @path = source.path
 
-        message << " in #{path}" if path
+        message = message + " in #{path}" if path
       end
 
       super message
@@ -383,7 +383,7 @@ EOM
           FileUtils.chmod entry.header.mode, destination
         end if entry.file?
 
-        File.symlink(install_location(entry.header.linkname, destination_dir), destination) if entry.symlink?
+        File.symlink(entry.header.linkname, destination) if entry.symlink?
 
         verbose destination
       end

lib/rubygems/package/digest_io.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # IO wrapper that creates digests of contents written to the IO it wraps.
 

lib/rubygems/package/file_source.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # The primary source of gems is a file on disk, including all usages
 # internal to rubygems.

lib/rubygems/package/io_source.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # Supports reading and writing gems from/to a generic IO object.  This is
 # useful for other applications built on top of rubygems, such as

lib/rubygems/package/old.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
 # All rights reserved.
@@ -64,7 +64,7 @@ class Gem::Package::Old < Gem::Package
 
         destination = install_location full_name, destination_dir
 
-        file_data = ''
+        file_data = String.new
 
         read_until_dashes io do |line|
           file_data << line
@@ -95,7 +95,7 @@ class Gem::Package::Old < Gem::Package
   # Reads the file list section from the old-format gem +io+
 
   def file_list io # :nodoc:
-    header = ''
+    header = String.new
 
     read_until_dashes io do |line|
       header << line
@@ -135,7 +135,7 @@ class Gem::Package::Old < Gem::Package
 
     return @spec if @spec
 
-    yaml = ''
+    yaml = String.new
 
     @gem.with_read_io do |io|
       skip_ruby io
@@ -176,4 +176,3 @@ class Gem::Package::Old < Gem::Package
   end
 
 end
-

lib/rubygems/package/source.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 class Gem::Package::Source # :nodoc:
 end
 

lib/rubygems/package/tar_header.rb

@@ -1,5 +1,5 @@
+# frozen_string_literal: true
 # -*- coding: utf-8 -*-
-# frozen_string_literal: false
 #--
 # Copyright (C) 2004 Mauricio Julio Fernández Pradier
 # See LICENSE.txt for additional licensing information.

lib/rubygems/package/tar_reader.rb

@@ -1,5 +1,5 @@
+# frozen_string_literal: true
 # -*- coding: utf-8 -*-
-# frozen_string_literal: false
 #--
 # Copyright (C) 2004 Mauricio Julio Fernández Pradier
 # See LICENSE.txt for additional licensing information.

lib/rubygems/package/tar_reader/entry.rb

@@ -1,5 +1,5 @@
+# frozen_string_literal: true
 # -*- coding: utf-8 -*-
-# frozen_string_literal: false
 #++
 # Copyright (C) 2004 Mauricio Julio Fernández Pradier
 # See LICENSE.txt for additional licensing information.

lib/rubygems/package/tar_test_case.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/test_case'
 require 'rubygems/package'
 

lib/rubygems/package/tar_writer.rb

@@ -1,5 +1,5 @@
+# frozen_string_literal: true
 # -*- coding: utf-8 -*-
-# frozen_string_literal: false
 #--
 # Copyright (C) 2004 Mauricio Julio Fernández Pradier
 # See LICENSE.txt for additional licensing information.

lib/rubygems/package_task.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 # Copyright (c) 2003, 2004 Jim Weirich, 2009 Eric Hodel
 #
 # Permission is hereby granted, free of charge, to any person obtaining

lib/rubygems/path_support.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 #
 # Gem::PathSupport facilitates the GEM_HOME and GEM_PATH environment settings
@@ -59,6 +59,9 @@ class Gem::PathSupport
         gem_path = gpaths.dup
       else
         gem_path = gpaths.split(Gem.path_separator)
+        if gpaths.end_with?(Gem.path_separator)
+          gem_path += default_path
+        end
       end
 
       if File::ALT_SEPARATOR then
@@ -69,13 +72,19 @@ class Gem::PathSupport
 
       gem_path << @home
     else
-      gem_path = Gem.default_path + [@home]
-
-      if defined?(APPLE_GEM_HOME)
-        gem_path << APPLE_GEM_HOME
-      end
+      gem_path = default_path
     end
 
     @path = gem_path.uniq
   end
+
+  # Return the default Gem path
+  def default_path
+    gem_path = Gem.default_path + [@home]
+
+    if defined?(APPLE_GEM_HOME)
+      gem_path << APPLE_GEM_HOME
+    end
+    gem_path
+  end
 end

lib/rubygems/platform.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require "rubygems/deprecate"
 
 ##

lib/rubygems/psych_additions.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 # This exists just to satisfy bugs in marshal'd gemspecs that
 # contain a reference to YAML::PrivateType. We prune these out
 # in Specification._load, but if we don't have the constant, Marshal

lib/rubygems/psych_tree.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module Gem
   if defined? ::Psych::Visitors
     class NoAliasYAMLTree < Psych::Visitors::YAMLTree

lib/rubygems/rdoc.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems'
 require 'rubygems/user_interaction'
 require 'fileutils'

lib/rubygems/remote_fetcher.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems'
 require 'rubygems/request'
 require 'rubygems/uri_formatter'

lib/rubygems/request.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'net/http'
 require 'thread'
 require 'time'
@@ -156,7 +156,7 @@ class Gem::Request
           if Net::HTTPOK === incomplete_response
             reporter.fetch(file_name, incomplete_response.content_length)
             downloaded = 0
-            data = ''
+            data = String.new
 
             incomplete_response.read_body do |segment|
               data << segment
@@ -223,7 +223,7 @@ class Gem::Request
   end
 
   def user_agent
-    ua = "RubyGems/#{Gem::VERSION} #{Gem::Platform.local}"
+    ua = "RubyGems/#{Gem::VERSION} #{Gem::Platform.local}".dup
 
     ruby_version = RUBY_VERSION
     ruby_version += 'dev' if RUBY_PATCHLEVEL == -1

lib/rubygems/request/connection_pools.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'thread'
 
 class Gem::Request::ConnectionPools # :nodoc:

lib/rubygems/request/http_pool.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # A connection "pool" that only manages one connection for now.  Provides
 # thread safe `checkout` and `checkin` methods.  The pool consists of one

lib/rubygems/request/https_pool.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 class Gem::Request::HTTPSPool < Gem::Request::HTTPPool # :nodoc:
   private
 

lib/rubygems/request_set.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'tsort'
 
 ##
@@ -77,6 +77,11 @@ class Gem::RequestSet
 
   attr_reader :vendor_set # :nodoc:
 
+  ##
+  # The set of source gems imported via load_gemdeps.
+
+  attr_reader :source_set
+
   ##
   # Creates a RequestSet for a list of Gem::Dependency objects, +deps+.  You
   # can then #resolve and #install the resolved list of dependencies.
@@ -106,6 +111,7 @@ class Gem::RequestSet
     @sorted              = nil
     @specs               = nil
     @vendor_set          = nil
+    @source_set          = nil
 
     yield self if block_given?
   end
@@ -143,7 +149,6 @@ class Gem::RequestSet
       return requests
     end
 
-    cache_dir = options[:cache_dir] || Gem.dir
     @prerelease = options[:prerelease]
 
     requests = []
@@ -158,13 +163,11 @@ class Gem::RequestSet
         end
       end
 
-      path = req.download cache_dir
+      spec = req.spec.install options do |installer|
+        yield req, installer if block_given?
+      end
 
-      inst = Gem::Installer.at path, options
-
-      yield req, inst if block_given?
-
-      requests << inst.install
+      requests << spec
     end
 
     return requests if options[:gemdeps]
@@ -272,10 +275,11 @@ class Gem::RequestSet
   def load_gemdeps path, without_groups = [], installing = false
     @git_set    = Gem::Resolver::GitSet.new
     @vendor_set = Gem::Resolver::VendorSet.new
+    @source_set = Gem::Resolver::SourceSet.new
 
     @git_set.root_dir = @install_dir
 
-    lock_file = "#{File.expand_path(path)}.lock".untaint
+    lock_file = "#{File.expand_path(path)}.lock".dup.untaint
     begin
       tokenizer = Gem::RequestSet::Lockfile::Tokenizer.from_file lock_file
       parser = tokenizer.make_parser self, []
@@ -339,6 +343,7 @@ class Gem::RequestSet
     @sets << set
     @sets << @git_set
     @sets << @vendor_set
+    @sets << @source_set
 
     set = Gem::Resolver.compose_sets(*@sets)
     set.remote = @remote

lib/rubygems/request_set/gem_dependency_api.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # A semi-compatible DSL for the Bundler Gemfile and Isolate gem dependencies
 # files.
@@ -205,6 +205,7 @@ class Gem::RequestSet::GemDependencyAPI
     @installing         = false
     @requires           = Hash.new { |h, name| h[name] = [] }
     @vendor_set         = @set.vendor_set
+    @source_set         = @set.source_set
     @gem_sources        = {}
     @without_groups     = []
 
@@ -363,6 +364,7 @@ class Gem::RequestSet::GemDependencyAPI
     source_set ||= gem_path       name, options
     source_set ||= gem_git        name, options
     source_set ||= gem_git_source name, options
+    source_set ||= gem_source     name, options
 
     duplicate = @dependencies.include? name
 
@@ -408,11 +410,7 @@ Gem dependencies file #{@path} requires #{name} more than once.
 
     pin_gem_source name, :git, repository
 
-    reference = nil
-    reference ||= options.delete :ref
-    reference ||= options.delete :branch
-    reference ||= options.delete :tag
-    reference ||= 'master'
+    reference = gem_git_reference options
 
     submodules = options.delete :submodules
 
@@ -421,6 +419,36 @@ Gem dependencies file #{@path} requires #{name} more than once.
     true
   end
 
+  ##
+  # Handles the git options from +options+ for git gem.
+  #
+  # Returns reference for the git gem.
+
+  def gem_git_reference options # :nodoc:
+    ref    = options.delete :ref
+    branch = options.delete :branch
+    tag    = options.delete :tag
+
+    reference = nil
+    reference ||= ref
+    reference ||= branch
+    reference ||= tag
+    reference ||= 'master'
+
+    if ref && branch
+      warn <<-WARNING
+Gem dependencies file #{@path} includes git reference for both ref and branch but only ref is used.
+      WARNING
+    end
+    if (ref||branch) && tag
+      warn <<-WARNING
+Gem dependencies file #{@path} includes git reference for both ref/branch and tag but only ref/branch is used.
+      WARNING
+    end
+
+    reference
+  end
+
   private :gem_git
 
   ##
@@ -481,6 +509,23 @@ Gem dependencies file #{@path} requires #{name} more than once.
 
   private :gem_path
 
+  ##
+  # Handles the source: option from +options+ for gem +name+.
+  #
+  # Returns +true+ if the source option was handled.
+
+  def gem_source name, options # :nodoc:
+    return unless source = options.delete(:source)
+
+    pin_gem_source name, :source, source
+
+    @source_set.add_source_gem name, source
+
+    true
+  end
+
+  private :gem_source
+
   ##
   # Handles the platforms: option from +options+.  Returns true if the
   # platform matches the current platform.
@@ -527,6 +572,7 @@ Gem dependencies file #{@path} requires #{name} more than once.
     else
       @requires[name] << name
     end
+    raise ArgumentError, "Unhandled gem options #{options.inspect}" unless options.empty?
   end
 
   private :gem_requires
@@ -612,6 +658,7 @@ Gem dependencies file #{@path} requires #{name} more than once.
 
     add_dependencies groups, spec.development_dependencies
 
+    @vendor_set.add_vendor_gem spec.name, path
     gem_requires spec.name, options
   end
 
@@ -651,6 +698,7 @@ Gem dependencies file #{@path} requires #{name} more than once.
       when :default then '(default)'
       when :path    then "path: #{source}"
       when :git     then "git: #{source}"
+      when :source  then "source: #{source}"
       else               '(unknown)'
       end
 
@@ -799,4 +847,3 @@ Gem dependencies file #{@path} requires #{name} more than once.
   Gem::RequestSet::GemDepedencyAPI = self # :nodoc:
 
 end
-

lib/rubygems/request_set/lockfile.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # Parses a gem.deps.rb.lock file and constructs a LockSet containing the
 # dependencies found inside.  If the lock file is missing no LockSet is
@@ -130,8 +130,8 @@ class Gem::RequestSet::Lockfile
       [source.repository, source.rev_parse]
     end
 
-    out << "GIT"
     by_repository_revision.each do |(repository, revision), requests|
+      out << "GIT"
       out << "  remote: #{repository}"
       out << "  revision: #{revision}"
       out << "  specs:"
@@ -144,9 +144,8 @@ class Gem::RequestSet::Lockfile
           out << "      #{dep.name}#{dep.requirement.for_lockfile}"
         end
       end
+      out << nil
     end
-
-    out << nil
   end
 
   def relative_path_from dest, base # :nodoc:

lib/rubygems/request_set/lockfile/parser.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 class Gem::RequestSet::Lockfile::Parser
   ###
   # Parses lockfiles
@@ -325,15 +325,24 @@ class Gem::RequestSet::Lockfile::Parser
     @tokens.peek
   end
 
-  def pinned_requirement name # :nodoc:
-    spec = @set.sets.select { |set|
-      Gem::Resolver::GitSet    === set or
-        Gem::Resolver::VendorSet === set
-    }.map { |set|
-      set.specs[name]
-    }.compact.first
+  if [].respond_to? :flat_map
+    def pinned_requirement name # :nodoc:
+      requirement = Gem::Dependency.new name
+      specification = @set.sets.flat_map { |set|
+        set.find_all(requirement)
+      }.compact.first
 
-    spec.version
+      specification && specification.version
+    end
+  else # FIXME: remove when 1.8 is dropped
+    def pinned_requirement name # :nodoc:
+      requirement = Gem::Dependency.new name
+      specification = @set.sets.map { |set|
+        set.find_all(requirement)
+      }.flatten(1).compact.first
+
+      specification && specification.version
+    end
   end
 
   ##
@@ -343,4 +352,3 @@ class Gem::RequestSet::Lockfile::Parser
     @tokens.unshift token
   end
 end
-

lib/rubygems/request_set/lockfile/tokenizer.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'strscan'
 require 'rubygems/request_set/lockfile/parser'
 

lib/rubygems/requirement.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require "rubygems/version"
 require "rubygems/deprecate"
 

lib/rubygems/resolver.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'rubygems/dependency'
 require 'rubygems/exceptions'
 require 'rubygems/util'
@@ -279,6 +279,7 @@ require 'rubygems/resolver/index_set'
 require 'rubygems/resolver/installer_set'
 require 'rubygems/resolver/lock_set'
 require 'rubygems/resolver/vendor_set'
+require 'rubygems/resolver/source_set'
 
 require 'rubygems/resolver/specification'
 require 'rubygems/resolver/spec_specification'

lib/rubygems/resolver/activation_request.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # Specifies a Specification object that should be activated.  Also contains a
 # dependency that was used to introduce this activation.
@@ -50,15 +50,27 @@ class Gem::Resolver::ActivationRequest
   # Downloads a gem at +path+ and returns the file path.
 
   def download path
-    if @spec.respond_to? :source
-      source = @spec.source
-    else
-      source = Gem.sources.first
-    end
-
     Gem.ensure_gem_subdirectories path
 
-    source.download full_spec, path
+    if @spec.respond_to? :sources
+      exception = nil
+      path = @spec.sources.find{ |source|
+        begin
+          source.download full_spec, path
+        rescue exception
+        end
+      }
+      return path      if path
+      raise  exception if exception
+
+    elsif @spec.respond_to? :source
+      source = @spec.source
+      source.download full_spec, path
+
+    else
+      source = Gem.sources.first
+      source.download full_spec, path
+    end
   end
 
   ##

lib/rubygems/resolver/api_set.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # The global rubygems pool, available via the rubygems.org API.
 # Returns instances of APISpecification.

lib/rubygems/resolver/api_specification.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 ##
 # Represents a specification retrieved via the rubygems.org API.
 #