gh-126782: Support qualified referencing for ntpath.abspath()

[nineteendo]

• Issue: Support qualified referencing for ntpath.abspath() #126782

[nineteendo]

cc @zooba, @eryksun

[nineteendo]

Do we test on Windows 10 and 11?

[zooba]

How close do we get just by swapping the order of the normpath call?

If we can't do that, I'd prefer to see more of the logic on the Python side of things, and better naming than "explicit" and "curdir".

[nineteendo]

How close do we get just by swapping the order of the normpath call?

You get other problems (and just replacing '/' with '\\' isn't enough), see: #30571

I'd prefer to see more of the logic on the Python side of things

It's the same idea, detect whether the path contained '.' or '..' and is not relative to the cwd, then prepend './'. It'll just be slower.

better naming than "explicit" and "curdir"

I'm bad at naming things, but we're doing something complicated here. It's just an internal option though.

• Parameter explicit_curdir: do the thing I described above
• Variable explicit: the original path contained '.' or '..'

Edit: Some other options are alternative_path, disambiguate, qualified.