rubygems/rubygems — pull request #838 by kana (2014-03-01 08:23:16+00:00)
Title: Fix a wrong type check in self.new

The change introduced by https://github.com/rubygems/rubygems/commit/81d806d818baeb5dcb6398ca631d772a003d078e is wrong. It compares a String instance to Class. So that the condition is always evaluated to false.