mxcl/homebrew — pull request #11941 by docwhat (2012-04-29 07:47:11+00:00)
Title: git-flow: install completion into site-functions

`_git-flow` needs to be installed into `share/zsh/site-functions`
not `share/zsh/functions`.

Files in `share/zsh/functions` must not change unless zsh is
upgraded and zsh is restarted. `site-functions` can change during a zsh
process's lifetime.

This will enable homebrew's zsh to automatically use the completion.
See issue #11936 for details.