introduces r21693 again and merges r21713
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21814 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
introduces r21693 again and merges r21713
array first. [ruby-core:21442]
--
convert to Array. [ruby-dev:37797]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21814 b2dd03c8-39d4-4d8f-98ff-823fe69b080e