I'm currently writing an objects.inv parser in non-Python and stumbled into something that you might be interested in: contrary to https://sphobjinv.readthedocs.io/en/stable/syntax.html, the name field can indeed contain spaces.

I've encountered it in my very own project, that has the following line:

dict classes std:term -1 glossary.html#term-dict-classes -

I tried loading https://www.attrs.org/en/stable/objects.inv with sphobjinv and it seems to silently ignore these entries.

Maybe you can just steal their regex.