Re: [PATCH v2 5/7] diff: use skip-to-optional-val in parsing --relative

Jeff King [off-list ref] writes:

On Thu, Dec 07, 2017 at 02:31:38PM -0800, Junio C Hamano wrote:

quoted

If this goes on top as a standalone patch, then the reason why it is
separate from the other users of _default() is not because the way
it uses the null return is special, but because it was written by a
different author, I would think.

Mostly I was just concerned that we missed a somewhat subtle bug in the
first conversion, and I think it's worth calling out in the commit
message why that callsite must be converted in a particular way. Whether
that happens in a separate commit or squashed, I don't care too much.

But I dunno. Maybe it is obvious now that the correct code is in there.
;)

It probably is too obvious to me only because the use case like this
one that wanted to treat --foo and --foo="" differently was the only
reason why I pushed against Christian's original one that hardcoded
the equivalence without allowing what the _default() variant lets us
do, I think.