Simplify the production for argument list, making sure that it
actually allows all the legal syntax, and nothing else. Previously, it did not allow a call like func(arg, **dictionary). This closes (again!) SF bug #493243.
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@ -422,10 +422,10 @@ series of arguments:
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\production{call}
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{\token{primary} "(" [\token{argument_list} [","]] ")"}
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\production{argument_list}
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{\token{positional_arguments} ["," \token{keyword_arguments}
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["," "*" \token{expression} ["," "**" \token{expression}]]]}
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\productioncont{| \token{keyword_arguments} ["," "*" \token{expression}
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["," "**" \token{expression}]]}
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{\token{positional_arguments} ["," \token{keyword_arguments}]
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["," "*" \token{expression}] ["," "**" \token{expression}]}
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\productioncont{| \token{keyword_arguments} ["," "*" \token{expression}]
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["," "**" \token{expression}]}
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\productioncont{| "*" \token{expression} ["," "**" \token{expression}]}
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\productioncont{| "**" \token{expression}}
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\production{positional_arguments}
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