carlhuda/bundler — pull request #1732 by ariofrio (2012-03-12 17:46:49+00:00)
Title: Allow spaces in %RUBYDIR% (specially useful for Windows).

(I meant %RUBYDIR%, not %RUBY_OPT% :)

See http://stackoverflow.com/questions/6375063/bundle-exec-rspec-spec-invalid-switch-in-rubyopt-f-runtimeerror.