mxcl/homebrew — pull request #19033 by colindean (2013-04-07 23:13:44+00:00)
Title: Add installed status indicator for deps command

* display a green checkmark or red x indicating installed?
* simply highlight dep in green or red to show status if `HOMEBREW_NO_EMOJI` is set

See also #18922. This came out of that discussion.

An opportunity for improvement of this and the eventual result of #18922 is refactoring to have both commands use the same dependency decoration code. If both are accepted, I'll undertake this once I gain an understanding of where this code would live, with the necessity that a user be able to monkeypatch it with their own decorator.