git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@26008 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r25402 from trunk into ruby_1_9_1. fixes the backport task #1921.¶
contents. based on a patch from Andy Keep in [ruby-core:24855].
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@26008 b2dd03c8-39d4-4d8f-98ff-823fe69b080e