* lib/rubygems.rb, lib/rubygems/*, test/rubygems/*:

Update rubygems 2.6.5 and 2.6.6.
  Release note of 2.6.5: 656f5d94dc
  Release note of 2.6.6: ccb9c3300c

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55495 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Fri Jun 24 13:12:41 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/rubygems.rb, lib/rubygems/*, test/rubygems/*:
+	  Update rubygems 2.6.5 and 2.6.6.
+	  Release note of 2.6.5: https://github.com/rubygems/rubygems/commit/656f5d94dc888d78d0d00f3598a4fa37391aac80
+	  Release note of 2.6.6: https://github.com/rubygems/rubygems/commit/ccb9c3300c063f5b5656669972d24a10ef8afbf5
+
 Fri Jun 24 09:17:15 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* common.mk (lib/unicode_normalize/tables.rb): should not depend

lib/rubygems.rb

@@ -10,7 +10,7 @@ require 'rbconfig'
 require 'thread'
 
 module Gem
-  VERSION = '2.6.4'
+  VERSION = '2.6.6'
 end
 
 # Must be first since it unloads the prelude from 1.9.2

lib/rubygems/commands/update_command.rb

@@ -241,7 +241,7 @@ command to remove old versions.
     update_gem 'rubygems-update', version
 
     installed_gems = Gem::Specification.find_all_by_name 'rubygems-update', requirement
-    version        = installed_gems.last.version
+    version        = installed_gems.first.version
 
     install_rubygems version
   end

lib/rubygems/config_file.rb

@@ -54,7 +54,7 @@ class Gem::ConfigFile
   # For Ruby implementers to set configuration defaults.  Set in
   # rubygems/defaults/#{RUBY_ENGINE}.rb
 
-  PLATFORM_DEFAULTS = {}
+  PLATFORM_DEFAULTS = Gem.platform_defaults
 
   # :stopdoc:
 

lib/rubygems/defaults.rb

@@ -175,4 +175,22 @@ module Gem
               RbConfig::CONFIG['ruby_version']
   end
 
+  ##
+  # Default options for gem commands.
+  #
+  # The options here should be structured as an array of string "gem"
+  # command names as keys and a string of the default options as values.
+  #
+  # Example:
+  #
+  # def self.platform_defaults
+  #   {
+  #       'install' => '--no-rdoc --no-ri --env-shebang',
+  #       'update' => '--no-rdoc --no-ri --env-shebang'
+  #   }
+  # end
+
+  def self.platform_defaults
+    {}
+  end
 end

test/rubygems/test_gem.rb

@@ -1695,6 +1695,13 @@ You may need to `gem install -g` to install missing gems
     ENV['RUBYGEMS_GEMDEPS'] = rubygems_gemdeps
   end
 
+  def test_platform_defaults
+    platform_defaults = Gem.platform_defaults
+
+    assert platform_defaults != nil
+    assert platform_defaults.is_a? Hash
+  end
+
   def ruby_install_name name
     orig_RUBY_INSTALL_NAME = RbConfig::CONFIG['ruby_install_name']
     RbConfig::CONFIG['ruby_install_name'] = name

test/rubygems/test_gem_installer.rb

@@ -1141,6 +1141,46 @@ gem 'other', version
     refute_path_exists should_be_removed
   end
 
+  # ruby core repository needs to `depend` file for extension build.
+  # but 1.9.2 and earlier mkmf.rb does not create TOUCH file like depend.
+  if RUBY_VERSION < '1.9.3'
+    def test_find_lib_file_after_install
+
+      @spec.extensions << "extconf.rb"
+      write_file File.join(@tempdir, "extconf.rb") do |io|
+        io.write <<-RUBY
+          require "mkmf"
+          create_makefile("#{@spec.name}")
+        RUBY
+      end
+
+      write_file File.join(@tempdir, "a.c") do |io|
+        io.write <<-C
+          #include <ruby.h>
+          void Init_a() { }
+        C
+      end
+
+      Dir.mkdir File.join(@tempdir, "lib")
+      write_file File.join(@tempdir, 'lib', "b.rb") do |io|
+        io.write "# b.rb"
+      end
+
+      @spec.files += %w[extconf.rb lib/b.rb a.c]
+
+      use_ui @ui do
+        path = Gem::Package.build @spec
+
+        installer = Gem::Installer.at path
+        installer.install
+      end
+
+      expected = File.join @spec.full_require_paths.find { |path|
+        File.exist? File.join path, 'b.rb'
+      }, 'b.rb'
+      assert_equal expected, @spec.matches_for_glob('b.rb').first
+    end
+  else
     def test_find_lib_file_after_install
       @spec.extensions << "extconf.rb"
       write_file File.join(@tempdir, "extconf.rb") do |io|
@@ -1183,6 +1223,7 @@ gem 'other', version
       }, 'b.rb'
       assert_equal expected, @spec.matches_for_glob('b.rb').first
     end
+  end
 
   def test_install_extension_and_script
     @spec.extensions << "extconf.rb"