Unify the option
/positional
/free
attributes into arg
#45
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Based on #38 (reply in thread)
There is now only attribute for variants on the
Arguments
enum:arg
. The type of argument is determined based on the first value:-
or containing=
, it is treated as an optional argument.The rest of the arguments of the attribute are then parsed based on the type of argument. We should then also make the error messages better. For example, if an argument is used that can only be used on a certain type of argument, we should tell the user which argument type does accept it.