Add defaults to the description with -h? about argparse HOT 7 CLOSED

We've ported everything from scratch based on python 3.9 (to be released as argparse version 2.0).

So this should now be supported (exactly the same way as in python).

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It makes sense, I like it.

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@piranna we support only critical bugfixes now. New maintaier needed to refresh port and so on.

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Would be a pull-request accepted?

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@piranna that's discussable. Personally, i'd prefer "atomic" updates to certain version of python's parser. Because that simplifies feature tracking and maintenance.

But if something is very important, it can be accepted separate. Features not from mainstream are declined.

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Python ArgParse support this with the ArgumentDefaultsHelpFormatter formatter_class option.

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Any news on this?

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