[Toybox] [PATCH] tar.test: workaround for mksh.

[Rob Landley]

On 5/1/19 2:36 PM, enh wrote:
> thanks. thanks for improving my echo -E patch too --- i knew about the
> syntax for "error if given more than one of these options", but not
> "take the last of this set to appear".

Options switching other options off is pretty common and needed a thing.

(Another reason I tend to want a short option for each --long-opt is the square
bracket grouping syntax only applies to short options. Works fine for a
--longopt that _has_ a corresponding short option, but I never came up with a
syntax to let you put a longopt in a group.)

Rob