Remove lockfiles generated by 0.9

CHANGELOG.md

@@ -3,6 +3,7 @@
   - No `bundle lock` command. Locking happens automatically on install or update
   - No .bundle/environment.rb. Require 'bundler/setup' instead.
   - $BUNDLE_HOME defaults to $GEM_HOME instead of ~/.bundle
+  - Remove lockfiles generated by 0.9
 
 ## 0.9.25 (May 3, 2010)
 

lib/bundler/lockfile_parser.rb

@@ -11,6 +11,13 @@ def initialize(lockfile)
       @specs        = []
       @state        = :source
 
+      # Check for 0.9 lockfile, removing it if found
+      if lockfile[0..2] == "---"
+        Bundler.ui.warn "Removing Gemfile.lock generated by Bundler 0.9"
+        FileUtils.rm_rf(lockfile)
+        return nil
+      end
+
       lockfile.split(/\n+/).each do |line|
         if line == "DEPENDENCIES"
           @state = :dependency