[issue29553] Argparser does not display closing parentheses in nested mutex groups

[Andrew Nester]

Andrew Nester added the comment:

>From my perspective current behaviour is a bit frustrate that's why it would be nice to have this issue fixed, but I would say it's critic one.
At the same time it doesn't introduce any BC breaking changes and kind safe

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29553>
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