textmate/rmate — pull request #25 by movesmyers (2013-08-15 21:18:18+00:00)
Title: Present error message and abort if user tries to rmate a directory.

I was confused when I couldn't rmate a directory, had to look on GitHub for an issue, and subsequently found https://github.com/textmate/rmate/issues/9, which was already discussed and closed. This will present an error to the user so they know this is expected behavior.