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

[Junio C Hamano <gitster@pobox.com>]

Jeff King <peff@peff.net> writes:

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