Revert r42938 "* lib/rubygems: Update to RubyGems 2.1.3"

It breaks build.
http://u64.rubyci.org/~chkbuild/ruby-trunk/log/20130913T200302Z.diff.html.gz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42941 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 14 insertions, 2 deletions

diff --git a/lib/rubygems/commands/fetch_command.rb b/lib/rubygems/commands/fetch_command.rb
index ec021359b6..c57ab0089a 100644
--- a/lib/rubygems/commands/fetch_command.rb
+++ b/lib/rubygems/commands/fetch_command.rb
@@ -28,6 +28,16 @@ class Gem::Commands::FetchCommand < Gem::Command
     "--version '#{Gem::Requirement.default}'"
   end
 
+  def description # :nodoc:
+    <<-EOF
+The fetch command fetches gem files that can be stored for later use or
+unpacked to examine their contents.
+
+See the build command help for an example of unpacking a gem, modifying it,
+then repackaging it.
+    EOF
+  end
+
   def usage # :nodoc:
     "#{program_name} GEMNAME [GEMNAME ...]"
   end
@@ -42,13 +52,15 @@ class Gem::Commands::FetchCommand < Gem::Command
       dep = Gem::Dependency.new gem_name, version
       dep.prerelease = options[:prerelease]
 
-      specs_and_sources, errors = Gem::SpecFetcher.fetcher.spec_for_dependency dep
+      specs_and_sources, errors =
+        Gem::SpecFetcher.fetcher.spec_for_dependency dep
+
       if platform then
         filtered = specs_and_sources.select { |s,| s.platform == platform }
         specs_and_sources = filtered unless filtered.empty?
       end
 
-      spec, source = specs_and_sources.sort_by { |s,| s.version }.first
+      spec, source = specs_and_sources.max_by { |s,| s.version }
 
       if spec.nil? then
         show_lookup_failure gem_name, version, errors, options[:domain]