Bundler.setup multiple times with different group sets breaks require

[drewinglis]

bundler 1.0.14 on ruby 1.9.2p180

If I call Bundler.setup(:default), and then call Bundler.setup(:default, :some_additional_group), and then try to require a gem in default, I get a "no such file to load" error.

If you look at the attached gist, and run bundler_require.rb, it will require mocha ok, but break when it tries to require nokogiri.

https://gist.github.com/1015800

Let me know if you need any more info. =)