the_platinum_searcher 1.6.4 (new formula)

``the_platinum_searcher`` (``pt``) is code search tool, similar to ``ack`` and ``the_silver_searcher`` (``ag``), but is written in Go to enable easier multi-platform support.
Ok, thanks. That's a shame though; if you're feeling like a saint it might be nice to file an upstream issue about their returning nice exit codes and being good Unix citizens :wink: