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.
It's probably sufficient to just use `system` and look for the exit code provided you can use exit codes to detect a positive/negative search result.