# no args is an error
fish_opt: The --short flag is required and must be a single character
# no short flag or an invalid short flag is an error
fish_opt: The --short flag is required and must be a single character
fish_opt: The --short flag is required and must be a single character
# a required and optional arg makes no sense
fish_opt: Mutually exclusive flags 'o/optional-val' and `r/required-val` seen
# a repeated and optional arg makes no sense
fish_opt: Mutually exclusive flags 'multiple-vals' and `o/optional-val` seen
# an unexpected arg not associated with a flag is an error
fish_opt: Expected at most 0 args, got 1
