I use Ulysses (http://www.ulyssesapp.com/ http://www.ulyssesapp.com/) but then again, it's mostly for straight up text writing. As far as I know, it doesn't sup

I use Ulysses (http://www.ulyssesapp.com/ http://www.ulyssesapp.com/) but then again, it's mostly for straight up text writing. As far as I know, it doesn't support code highlighting.