[issue30555] _io._WindowsConsoleIO breaks in the face of fd redirection

[Steve Dower]

Steve Dower <steve.dower at python.org> added the comment:

Thanks for persisting with this change.

Looks like backports will have to be manual, and I'm not going to get to them today myself, but if someone else wants to do it then feel free.

I'm pretty sure this won't have any (negative) visible impact, but just in case, let's let a 3.10 release go out with it before merging the backports. I'd rather have no change in earlier versions than a regression.

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stage: patch review -> backport needed

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