I don't see this option in getopt, is it there?
e.g. If I want to disallow passing "--loud" and "--quite" at the same time.
I can understand it would be difficult to implement this with getopt's current
API.
A limited form of this is possible to do inline via a delegate. For example:
bool quiet, loud;
getopt
(
args,
"quiet", { enforce(!loud); quiet = true; },
"loud", { enforce(!quiet); loud = true; },
);
However that scales poorly with more than two arguments, and especially if
they're of a different type.
