ipython/ipython — pull request #2131 by doda (2012-07-13 01:15:44+00:00)
Title: Add option append (-a) to %save

inspired by: http://www.reddit.com/r/Python/comments/wc0wp/ipython_how_to_save_code_entered_in_the_shell_to/

:)

I'm not sure if simply writing a `\n` if it isn't there is the best way to handle the case of multiple `save -a` after one another, but i'd think it's than to try and change `find_user_code`.