From 934f537b458778f4786716c95b73fc72bc1ce256 Mon Sep 17 00:00:00 2001
From: ryan <ryan@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 28 Jan 2011 23:46:47 +0000
Subject: Import rubygems 1.5.0 (release candidate @ 09893d9)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30717 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/rubygems.rb | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

(limited to 'lib/rubygems.rb')

diff --git a/lib/rubygems.rb b/lib/rubygems.rb
index 08c675a86f..ddb4c2aaa4 100644
--- a/lib/rubygems.rb
+++ b/lib/rubygems.rb
@@ -1,3 +1,9 @@
+######################################################################
+# This file is imported from the rubygems project.
+# DO NOT make modifications in this repo. They _will_ be reverted!
+# File a patch instead and assign it to Ryan Davis or Eric Hodel.
+######################################################################
+
 # -*- ruby -*-
 #--
 # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
@@ -5,15 +11,20 @@
 # See LICENSE.txt for permissions.
 #++
 
-# TODO: remove when 1.9.1 no longer supported
-QUICKLOADER_SUCKAGE = RUBY_VERSION >= "1.9.1" and RUBY_VERSION < "1.9.2"
-# TODO: remove when 1.9.2 no longer supported
-GEM_PRELUDE_SUCKAGE = RUBY_VERSION >= "1.9.2" and RUBY_VERSION < "1.9.3"
+module Gem
+  QUICKLOADER_SUCKAGE = RUBY_VERSION =~ /^1\.9\.1/
+  GEM_PRELUDE_SUCKAGE = RUBY_VERSION =~ /^1\.9\.2/
+end
 
-gem_preluded = GEM_PRELUDE_SUCKAGE and defined? Gem
+if Gem::GEM_PRELUDE_SUCKAGE and defined?(Gem::QuickLoader) then
+  Gem::QuickLoader.remove
 
-if GEM_PRELUDE_SUCKAGE and defined?(Gem::QuickLoader) then
-  Gem::QuickLoader.load_full_rubygems_library
+  $LOADED_FEATURES.delete Gem::QuickLoader.path_to_full_rubygems_library
+
+  if $LOADED_FEATURES.any? do |path| path.end_with? '/rubygems.rb' end then
+    # TODO path does not exist here
+    raise LoadError, "another rubygems is already loaded from #{path}"
+  end
 
   class << Gem
     remove_method :try_activate if Gem.respond_to?(:try_activate, true)
@@ -1165,7 +1176,7 @@ end
 
 module Kernel
 
-  remove_method :gem if respond_to? :gem # defined in gem_prelude.rb on 1.9
+  remove_method :gem if 'method' == defined? gem # from gem_prelude.rb on 1.9
 
   ##
   # Use Kernel#gem to activate a specific version of +gem_name+.
@@ -1217,6 +1228,7 @@ end
 
 require 'rubygems/exceptions'
 
+gem_preluded = Gem::GEM_PRELUDE_SUCKAGE and defined? Gem
 unless gem_preluded then # TODO: remove guard after 1.9.2 dropped
   begin
     ##
@@ -1240,7 +1252,7 @@ end
 ##
 # Enables the require hook for RubyGems.
 
-require 'rubygems/custom_require'
+require 'rubygems/custom_require' unless Gem::GEM_PRELUDE_SUCKAGE
 
 Gem.clear_paths
 
-- 
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