Re: Re* diff: --quiet does not imply --exit-code if --diff-filter is present

Jeff King [off-list ref] writes:

I guess you did it this way to better share the discard-the-result
codepath.

No, I did it as a hack because many places already do:

	if (... sub helper function that eventually call_callback ... < 0)
        	break; // or
                return; // or
                goto fail_return; // or whatever to exit recursion and loop

and obviously it was too much pain to change everybody to also pay
attention to the new flag.

A possibly cleaner way would be to designate a single negative value that
is not -1 as "early return but not failure" without using an extra bit,
but that also needs full vetting of the existing callchain, which I didn't
want to do just to write a "it would be as little as this" patch.