Port nim regex tests #61895
Description
Nim has lots of regex functional tests we should port over to improve our coverage:
https://github.com/nitely/nim-regex/blob/eeefb4f51264ff3bc3b36caf55672a74f52f5ef5/tests/tests.nim
{{ message }}
Nim has lots of regex functional tests we should port over to improve our coverage:
https://github.com/nitely/nim-regex/blob/eeefb4f51264ff3bc3b36caf55672a74f52f5ef5/tests/tests.nim