[issue9182] document “--” as a way to distinguish option w/ narg='+' from positional argument in argparse

[Daniel Albeseder]

Daniel Albeseder <kotan at gmx.at> added the comment:

Added more unit tests for testing the help text as well as the functionality of the "--" separator.

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keywords: +patch
Added file: http://bugs.python.org/file19731/issue9182.patch

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