I've been poking at coco/r recently and it seems to have a nice collection of backends. Not sure how maintained it is, spent an afternoon getting the Python ve

I've been poking at coco/r recently and it seems to have a nice collection of backends. Not sure how maintained it is, spent an afternoon getting the Python version ported over to py3 (which wasn't really all that hard) to learn how it works. As TFA states you can't reuse grammars for multiple languages because the actions are declared inline but a few of the other complaints aren't an issue due to the way the generated parser does it thing -- quite well designed IMHO.