fish-shell/fish-shell — pull request #1365 by kballard (2014-03-26 17:25:37+00:00)
Title: Fix non-verbose, non-informative __fish_git_prompt

At some point the non-verbose, non-informative variant of the prompt
(e.g. the variant that looks like the bash prompt) was modified to try
and show the behind/ahead counts the same way the informative prompt
does. Besides being wrong, it also didn't work because behind/ahead
weren't defined.