rubygems/rubygems — pull request #620 by indirect (2013-08-15 01:32:20+00:00)
Title: Update Specification.all= to work with stubs.

When @jonleighton added stubs support, many methods were changed to search the `@@stubs` cvar (for example by gem name) instead of the `@@all` cvar. This makes many methods continue to work the same way they did in Rubygems 2.0 after `all=` has been called.