[Python-Dev] GIL required for _all_ Python calls?

["Martin v. Löwis"]

> I've been wondering whether it's possible to release the GIL in the
> regex engine during matching.

I don't think that's possible. The regex engine can also operate on
objects whose representation may move in memory when you don't hold
the GIL (e.g. buffers that get mutated). Even if they stay in place -
if their contents changes, regex results may be confusing.

Regards,
Martin