Bug fix: Construct proper URLs to download gems for platforms like JRuby

lib/bundler/remote_specification.rb

@@ -32,7 +32,10 @@ def __swap__(spec)
     private
 
     def _remote_uri
-      "#{@source_uri}/quick/Marshal.4.8/#{@name}-#{@version}.gemspec.rz"
+      # "#{@source_uri}/quick/Marshal.4.8/#{@name}-#{@version}.gemspec.rz"
+      tuple = [@name, @version, @platform]
+      tuple = tuple - [nil, 'ruby', '']
+      "#{@source_uri}/quick/Marshal.4.8/#{tuple.join("-")}.gemspec.rz"
     end
 
     def _remote_specification

spec/bundler/fetcher_spec.rb

@@ -110,6 +110,19 @@ def linux ; Gem::Platform.new ['x86', 'linux', nil] ; end
       out.should == "1.0.0 JAVA"
     end
 
+    it "finds the java one when only Java is there" do
+      Gem.platforms = [rb, java]
+
+      install_manifest <<-Gemfile
+        clear_sources
+        source "file://#{gem_repo1}"
+        gem "only_java"
+      Gemfile
+
+      out = run_in_context "Bundler.require_env ; puts ONLY_JAVA"
+      out.should == "1.0"
+    end
+
     it "raises GemNotFound if no gem for corect platform exists when gem dependencies are tied to specific sources" do
       Gem.platforms = [rb]
       system_gems "platform_specific-1.0-java" do

spec/support/builders.rb

@@ -53,6 +53,10 @@ def build_repo1
           s.write "lib/platform_specific.rb", "PLATFORM_SPECIFIC = '1.0.0 RUBY'"
         end
 
+        build_gem "only_java" do |s|
+          s.platform = "java"
+        end
+
         build_gem "very-simple"
 
         build_gem "very-simple-prerelease", "1.0.pre"