ipython/ipython — pull request #1718 by bfroehle (2012-05-10 00:35:56+00:00)
Title: Use CRegExp trait for regular expressions.

Now that we have this `CRegExp` trait, I suppose we should use it.

I've searched through the source and identified a few instances of configurable regular expressions in `parallel/apps/launcher.py`.

One immediate benefit is that IPython now validates the regular expression at config time instead when it is first used.