[docs] [issue9182] document “--” as a way to distinguish option w/ narg='+' from positional argument in argparse
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Sun Nov 21 10:44:09 CET 2010
Daniel Albeseder <kotan at gmx.at> added the comment:
Steven: From msg121850 I think the last two examples do not need the "--". Since there are no positional arguments, the "--" is not needed. However the following additional cases exist:
-x X [X ...] -y Y -- A B # since optionals might come in other order
Basically every of the three variable length classes need to be tested: ZeroOrOne, ZeroOrMore and OneOrMore. This might always come in a conflict with positional arguments needed afterward (even with optional positional arguments!).
BTW - I recognized the following seem to be supported:
for [-x [X ...]] -- [y ...]
the following input: a -x -- b
I would expect to be 'a' and 'b' positional arguments and the optional '-x' has no argument. However this seem not to work. Another issue or desired behavior?
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