* lib/rubygems: Update to RubyGems master 6a3d9f9. Changes include:

  Compatibly renamed Gem::DependencyResolver to Gem::Resolver.

  Added support for git gems in gem.deps.rb and Gemfile.

  Fixed resolver bugs.

* test/rubygems: ditto.

* lib/rubygems/LICENSE.txt:  Updated to license from RubyGems trunk.
  [ruby-trunk - Bug #9086]

* lib/rubygems/commands/which_command.rb:  RubyGems now indicates
  failure when any file is missing.  [ruby-trunk - Bug #9004]

* lib/rubygems/ext/builder:  Extensions are now installed into the
  extension install directory and the first directory in the require
  path from the gem.  This allows backwards compatibility with msgpack
  and other gems that calculate full require paths.
  [ruby-trunk - Bug #9106]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43714 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 22 insertions, 4 deletions

diff --git a/lib/rubygems/spec_fetcher.rb b/lib/rubygems/spec_fetcher.rb
index 22fa68db69..12b8fb27d8 100644
--- a/lib/rubygems/spec_fetcher.rb
+++ b/lib/rubygems/spec_fetcher.rb
@@ -34,6 +34,10 @@ class Gem::SpecFetcher
 
   @fetcher = nil
 
+  ##
+  # Default fetcher instance.  Use this instead of ::new to reduce object
+  # allocation.
+
   def self.fetcher
     @fetcher ||= new
   end
@@ -43,8 +47,8 @@ class Gem::SpecFetcher
   end
 
   ##
-  # Creates a new SpecFetcher.  Ordinarily you want to use
-  # Gem::SpecFetcher::fetcher which uses the Gem.sources.
+  # Creates a new SpecFetcher.  Ordinarily you want to use the default fetcher
+  # from Gem::SpecFetcher::fetcher which uses the Gem.sources.
   #
   # If you need to retrieve specifications from a different +source+, you can
   # send it as an argument.
@@ -84,7 +88,11 @@ class Gem::SpecFetcher
     rejected_specs = {}
 
     if dependency.prerelease?
-      type = :complete
+      if dependency.specific?
+        type = :complete
+      else
+        type = :abs_latest
+      end
     elsif dependency.latest_version?
       type = :latest
     else
@@ -224,6 +232,12 @@ class Gem::SpecFetcher
                     tuples_for(source, :released)
 
                   names.sort
+                when :abs_latest
+                  names =
+                    tuples_for(source, :prerelease, true) +
+                    tuples_for(source, :latest)
+
+                  names.sort
                 when :prerelease
                   tuples_for(source, :prerelease)
                 else
@@ -239,7 +253,11 @@ class Gem::SpecFetcher
     [list, errors]
   end
 
-  def tuples_for(source, type, gracefully_ignore=false)
+  ##
+  # Retrieves NameTuples from +source+ of the given +type+ (:prerelease,
+  # etc.).  If +gracefully_ignore+ is true, errors are ignored.
+
+  def tuples_for(source, type, gracefully_ignore=false) # :nodoc:
     cache = @caches[type]
 
     tuples =