From: Junio C Hamano <gitster@pobox.com>
Date: Fri, 04 Feb 2022 16:20:44 GMT
Subject: Re: [PATCH v6 0/5] teach submodules to know they're submodules
Message-ID: <xmqqiltuob6r.fsf@gitster.g>
In-Reply-To: <220204.86pmo34d2m.gmgdl@evledraar.gmail.com>

Ævar Arnfjörð Bjarmason <avarab@gmail.com> writes:

> I just genuinely don't get where this is headed. I.e. for the last
> iteration I did a demo patch on top that showed that there was no case
> added by the series where the on-the-fly discovery wasn't equivalent to
> the set-in-config value[4].
>
> That change showed that after this series in a state where the config
> *is* redundant to on the fly discovery (or maybe not, and we're just
> missing test coverage).
>
> But since you're citing correctness do you have some repo->sub
> relationship in mind that would be ambiguous in a way where the
> configuration would resolve the ambiguity?

This is an excellent question, which I wish I could have raised in
my earlier response.  A clear explanation why this setting is not
a redundant copy but adds real information on top of what we should
be able to learn from the filesystem structure would really help in
justifying the new thing.

Thanks.