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From: Junio C Hamano <gitster@pobox.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: Emily Shaffer <emilyshaffer@google.com>,
	git@vger.kernel.org, Albert Cui <albertcui@google.com>,
	Phillip Wood <phillip.wood123@gmail.com>,
	Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Matheus Tavares Bernardino <matheus.bernardino@usp.br>,
	Jonathan Nieder <jrnieder@gmail.com>,
	Jacob Keller <jacob.keller@gmail.com>,
	Atharva Raykar <raykar.ath@gmail.com>,
	Derrick Stolee <stolee@gmail.com>,
	Jonathan Tan <jonathantanmy@google.com>,
	Glen Choo <chooglen@google.com>
Subject: Re: [PATCH v9 0/3] teach submodules to know they're submodules
Date: Sat, 12 Mar 2022 21:43:03 -0800	[thread overview]
Message-ID: <xmqqpmmql860.fsf@gitster.g> (raw)
In-Reply-To: <220311.8635joj0lf.gmgdl@evledraar.gmail.com> ("Ævar Arnfjörð Bjarmason"'s message of "Fri, 11 Mar 2022 10:09:50 +0100")

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

> But now it's a boolean indicating "it's there, discover it", and the
> implied (but not really explicitly stated) reason in 2/3 is that it's
> purely for optimization purposes at this point.

You may know that I have a separate checkout of the 'todo' branch at
path "Meta" in my working tree.

I could use the hasSuperproject=false setting there, to say "this is
*NOT* a submodule, even the parent directory is a working tree of a
different repository, it is not our superproject, so do *NOT* bother
to go up to discover anything".

If that configuration weren't there in the "Meta/.git/config", the
parent directory of "Meta" (which has its own ".git") cannot tell if
that "Meta" thing is a submodule being prepared that hasn't been
added yet, or it will never intended to be a submodule.  I would
imagine that "git add X" can later be taught to refuse to add X if
there is X/.git and X/.git/config says it explicitly says that it
does not have a superproject.

So, I am not sure if it is a good characterization that it is for
optimization at all.

      reply	other threads:[~2022-03-13  5:43 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-17  0:56 [PATCH v6 0/5] teach submodules to know they're submodules Emily Shaffer
2021-11-17  0:56 ` [PATCH v6 1/5] t7400-submodule-basic: modernize inspect() helper Emily Shaffer
2021-11-17  0:56 ` [PATCH v6 2/5] introduce submodule.superprojectGitDir record Emily Shaffer
2021-11-17 23:43   ` Jonathan Tan
2021-11-17  0:56 ` [PATCH v6 3/5] submodule: record superproject gitdir during absorbgitdirs Emily Shaffer
2021-11-17  0:57 ` [PATCH v6 4/5] submodule: record superproject gitdir during 'update' Emily Shaffer
2021-11-17  0:57 ` [PATCH v6 5/5] submodule: use config to find superproject worktree Emily Shaffer
2021-11-17 11:43 ` [RFC PATCH 0/2] submodule: test what happens if submodule.superprojectGitDir isn't around Ævar Arnfjörð Bjarmason
2021-11-17 11:43   ` [RFC PATCH 1/2] submodule tests: fix potentially broken "config .. --unset" Ævar Arnfjörð Bjarmason
2021-11-17 11:43   ` [RFC PATCH 2/2] submodule: add test mode for checking absence of "superProjectGitDir" Ævar Arnfjörð Bjarmason
2021-11-23 20:08   ` [RFC PATCH 0/2] submodule: test what happens if submodule.superprojectGitDir isn't around Emily Shaffer
2021-11-24  1:38     ` Ævar Arnfjörð Bjarmason
2021-11-17 23:28 ` [PATCH v6 0/5] teach submodules to know they're submodules Jonathan Tan
2021-11-23 20:28   ` Emily Shaffer
2022-02-03 21:59 ` Emily Shaffer
2022-02-03 21:59   ` [PATCH v7 1/4] t7400-submodule-basic: modernize inspect() helper Emily Shaffer
2022-02-03 21:59   ` [PATCH v7 2/4] introduce submodule.superprojectGitDir record Emily Shaffer
2022-02-03 21:59   ` [PATCH v7 3/4] submodule: record superproject gitdir during absorbgitdirs Emily Shaffer
2022-02-03 21:59   ` [PATCH v7 4/4] submodule: record superproject gitdir during 'update' Emily Shaffer
2022-02-03 22:39   ` [PATCH v6 0/5] teach submodules to know they're submodules Junio C Hamano
2022-02-04  1:15   ` Ævar Arnfjörð Bjarmason
2022-02-04 16:20     ` Junio C Hamano
2022-02-07 19:56     ` Jonathan Nieder
2022-02-07 23:21       ` Junio C Hamano
2022-02-08  1:18         ` Jonathan Nieder
2022-02-08 18:24           ` Junio C Hamano
2022-02-10 22:12             ` Emily Shaffer
2022-02-10 22:53               ` Jonathan Nieder
2022-02-12 20:35       ` Ævar Arnfjörð Bjarmason
2022-02-13  6:25         ` Junio C Hamano
2022-03-01  0:26   ` [PATCH v8 0/3] " Emily Shaffer
2022-03-01  0:26     ` [PATCH v8 1/3] t7400-submodule-basic: modernize inspect() helper Emily Shaffer
2022-03-01  0:26     ` [PATCH v8 2/3] introduce submodule.hasSuperproject record Emily Shaffer
2022-03-01  7:00       ` Junio C Hamano
2022-03-08 20:04         ` Emily Shaffer
2022-03-08 22:13       ` Glen Choo
2022-03-08 22:29         ` Glen Choo
2022-03-01  0:26     ` [PATCH v8 3/3] rev-parse: short-circuit superproject worktree when config unset Emily Shaffer
2022-03-01  7:06       ` Junio C Hamano
2022-03-09  0:38         ` Emily Shaffer
2022-03-01  3:08     ` [PATCH v8 0/3] teach submodules to know they're submodules Junio C Hamano
2022-03-08 18:54       ` Emily Shaffer
2022-03-10  0:44     ` [PATCH v9 " Emily Shaffer
2022-03-10  0:44       ` [PATCH v9 1/3] t7400-submodule-basic: modernize inspect() helper Emily Shaffer
2022-03-10  0:44       ` [PATCH v9 2/3] introduce submodule.hasSuperproject record Emily Shaffer
2022-03-10  2:09         ` Junio C Hamano
2022-03-10 21:29           ` Glen Choo
2022-03-10 21:40           ` Glen Choo
2022-03-10 22:10             ` Junio C Hamano
2022-03-10 23:42               ` Glen Choo
2022-03-10 23:53                 ` Glen Choo
2022-03-15 20:48                   ` Emily Shaffer
2022-03-15 20:56                     ` Emily Shaffer
2022-03-15 21:19                       ` Glen Choo
2022-03-15 18:39               ` Emily Shaffer
2022-03-15 19:19                 ` Junio C Hamano
2022-03-10  2:32         ` Junio C Hamano
2022-03-10 21:54         ` Glen Choo
2022-03-15 18:27           ` Emily Shaffer
2022-03-10  0:44       ` [PATCH v9 3/3] rev-parse: short-circuit superproject worktree when config unset Emily Shaffer
2022-03-10  1:47         ` Junio C Hamano
2022-03-10  4:39           ` Eric Sunshine
2022-03-11  9:09       ` [PATCH v9 0/3] teach submodules to know they're submodules Ævar Arnfjörð Bjarmason
2022-03-13  5:43         ` Junio C Hamano [this message]

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