[issue42023] Argparse: Add a "display" arg

[paul j3]

paul j3 <ajipanca at gmail.com> added the comment:

I'm not following this request either, especially the colored part.

However, I can imagine adding a variable that gives the user full control over the action-invocation.  In:

    argparse.HelpFormatter._format_action_invocation method.

Currently it accepts the metavar (but not the tuple version) for a positional, but for optionals constructs:

  -s ARGS, --long ARGS

This can be quite long and ugly if the ARGS is a long choices, or there are many flag alternatives.  A number of SO users have asked for something simpler, usually with just on flag or

  -s, --long ARGS

There may even be a bug/issue(s) related to this already.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42023>
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