Performance fix for MRI 1.9

MRI 1.9 is considerably faster when directly comparing Gem::Version,
while 1.8 is faster with the regex method.

1 files changed, 9 insertions, 4 deletions

diff --git a/lib/bundler/index.rb b/lib/bundler/index.rb
index 4d7f77251d..375bb276ff 100644
--- a/lib/bundler/index.rb
+++ b/lib/bundler/index.rb
@@ -101,10 +101,15 @@ module Bundler
       end
     end
 
-    def same_version?(a, b)
-      regex = /^(.*?)(?:\.0)*$/
-
-      a.to_s[regex, 1] == b.to_s[regex, 1]
+    if RUBY_VERSION < '1.9'
+      def same_version?(a, b)
+        regex = /^(.*?)(?:\.0)*$/
+        a.to_s[regex, 1] == b.to_s[regex, 1]
+      end
+    else
+      def same_version?(a, b)
+        a == b
+      end
     end
 
     def spec_satisfies_dependency?(spec, dep)