twitter/bootstrap — pull request #4823 by dbernar1 (2012-08-29 16:45:33+00:00)
Title: Nested Collapses Fix

Hello, I made a very simple fix to the problem with nesting collapses.

I expect there are unintended consequences, because I expect you would have made this change yourself otherwise.

But, just in case, here's the pull request in case you might find it useful.