[issue31405] shutil.which doesn't find files without PATHEXT extension on Windows

[Paul Moore]

Paul Moore <p.f.moore at gmail.com> added the comment:

I don't think this is expected behaviour. It's not documented what should happen in this case but the behaviour suggested by the OP (to search for the path as given, followed by [path+e for e in os.environ['PATHEXT'].split(os.pathsep)] seems reasonable to me.

The details and corner cases need thrashing out, which I don't have time to do right now, but the principle seems sound.

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