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

[Martin Panter]

Martin Panter added the comment:

My main concern with the patch is that it only half fixes the problem. It sounds like it will allow parsing “--opt -x” (if “-x” is not registered as an option), but will still refuse “--opt -h”, assuming “-h” is registered by default. What is the barrier to parsing an argument to the option syntax independently of what option names are registered?

Also the name “args_default_to_positional=True” name is both unwieldy and vague to me. The purpose seems to be to disable option-lookalike-strings from being reserved. Maybe call it something like “reserve_all_options=False” or “reserve_unregistered_options=False”?

I left some thoughts in the code review for the documentation too.

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nosy: +martin.panter
stage: needs patch -> patch review

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9334>
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