I wanted to see how Ruby's arrays implement the functionality for an iterator -- say inject.
So, I use inject in Ruby code and do Ctrl+B when caret is on "inject". It takes me to array.rb.inject. But this happens to be the "stub, used for indexing".
Is there a way to see actual library source code? (Again, I am drawing parallels between RubyMine and IDEA. The latter provides a nice way to grok the JDK sources).