[issue9334] argparse does not accept options taking arguments beginning with dash (regression from optparse)

[Steven Bethard]

Steven Bethard added the comment:

Interesting idea! The regex would need a little extra care to interoperate properly with prefix_chars, but the approach doesn't seem crazy. I'd probably call the constructor option something like "args_default_to_positional" (the current behavior is essentially that args default to optional arguments if they look like optionals).

I'd be happy to review a patch along these lines. It would probably be good if Anders Kaseorg could also review it to make sure it fully solves his problem.

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<http://bugs.python.org/issue9334>
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