(Sorry, this is mildly off-topic.) Not sure if this fits your usecase, but you should check out codesearch if you haven't already: https://github.com/google/cod

(Sorry, this is mildly off-topic.) Not sure if this fits your usecase, but you should check out codesearch if you haven't already: https://github.com/google/codesearch https://github.com/google/codesearch (Russ Cox's excellent writeup is here: https://swtch.com/~rsc/regexp/regexp4.html https://swtch.com/~rsc/regexp/regexp4.html)