ipython/ipython — pull request #1621 by ivanov (2012-04-18 01:32:41+00:00)
Title: clear In[] prompt numbers on "Clear All Output"

For more version-control-friendly `.ipynb` files, I've found it useful to strip the `In[]` prompt numbers when doing a "Clear all output".

I noted in the commit here that this should be a configurable behavior, and would love a pointer for how to proceed with making it configurable (using some javascript checkbox widget?)

I'm equally happy with amending this commit to just be the default, and punting on the configurability until a later date.