re2 has lots of regex functional tests we should port over to improve our coverage: https://github.com/google/re2/blob/d826d9fcb68c62996c1b7c0a45d604e22d814952/re2/testing/
re2 has lots of regex functional tests we should port over to improve our coverage:
https://github.com/google/re2/blob/d826d9fcb68c62996c1b7c0a45d604e22d814952/re2/testing/