Sure, though you can do commented regexp in Perl and Ruby and probably others, using x flag if my memory serve well, though in practice for maintenability you'll probably better avoid this kind of "clever" tricks.

Just skimming through the readme, I'm also in doubt that the paradigm shift would really be any better than folk regexp.

That doesn't make the existence of the project any less cooler, of course. Congratulation to the author, and don't let such a comment narrow down your motivation, as it's really not the point. If you enjoy do it, great. If you learn something in the process, awesome. If it can lead to something that I can't envision, how marvelous. But it doesn't, that was still a great epic and you can be proud.