mitsuhiko/werkzeug — pull request #377 by ThiefMaster (2013-06-02 15:56:33+00:00)
Title: Handle pop() and setdefault() correctly in UpdateDictMixin and add some testcases

`pop()` and `setdefault()` should only trigger `on_update` if the dict was actually modified.

Additionally there were no testcases so I added some.