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From: Christian Couder <christian.couder@gmail.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: Siddharth Asthana <siddharthasthana31@gmail.com>,
	git <git@vger.kernel.org>, John Cai <johncai86@gmail.com>
Subject: Re: [PATCH 3/3] cat-file: add mailmap support
Date: Thu, 7 Jul 2022 11:02:21 +0200	[thread overview]
Message-ID: <CAP8UFD13MfoMqWSfZfucfdbQL5ypbcYNuHfm1QS8uhmQYq4_VA@mail.gmail.com> (raw)
In-Reply-To: <220701.86sfnlbu0j.gmgdl@evledraar.gmail.com>

On Fri, Jul 1, 2022 at 1:39 AM Ævar Arnfjörð Bjarmason <avarab@gmail.com> wrote:
> On Thu, Jun 30 2022, Siddharth Asthana wrote:
>
> > git cat-file is not a plumbing command anymore, especially as it gained
> > more and more high level features like its `--batch-command` mode. So
> > tools do use it to get commit and tag contents that are then displayed
> > to users. This content which has author, committer or tagger
> > information, could benefit from passing through the mailmap mechanism,
> > before being sent or displayed.
> >
> > This patch adds --[no-]use-mailmap command line option to the git
> > cat-file command. It also adds --[no-]mailmap option as an alias to
> > --[no-]use-mailmap.
>
> I think I know the answer, but I think it would be helpful to discuss
> the underlying motivations too. I.e. an obvious alternative is "why not
> just get this information out of git show/log then?".
>
> The "I think I know the answer" being that I suspect this is to cater to
> gitaly having persistent "cat-file" processes around, whereas for "git
> log" it would entail spinning up a new process per-request.
>
> But maybe I'm missing something :)

No, you are not missing anything :)

> So not as a blocker for this change, which I think can be made small
> enough to be justified in cat-file, but just for context: If "git log"
> had a similar --batch mode, would there be a need for this change,

One nice thing with `git cat-file` is that it works for any kind of
git object. But yeah we could perhaps use `git show` if it had a
--batch mode, or a mix of `git cat-file` for blobs and trees, and `git
log --batch` for commits and tag objects.

> or is
> this just adding a common case to "cat-file" to "tide us over" (as it
> were) while that sort of thing doesn't exist yet (and maybe never will
> :()?

By the way there have been 2 GSoC contributors working on adding
ref-filter formating support to `git cat-file` and that hasn't
succeeded yet, mostly for performance reasons. So another way would be
to wait until ref-filter formats support everything that pretty
formats support, which Jaydeep is currently working on, including %aN
(author name respecting .mailmap) and %aE (author email respecting
.mailmap), and then wait until `git cat-file`'s --batch formats
support ref-filter formats.

But yeah, we hope the change can be made small enough to be justified
in cat-file.

  parent reply	other threads:[~2022-07-07  9:02 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-30 14:24 [PATCH 0/3] Add support for mailmap in cat-file Siddharth Asthana
2022-06-30 14:24 ` [PATCH 1/3] ident: move commit_rewrite_person() to ident.c Siddharth Asthana
2022-06-30 16:00   ` Đoàn Trần Công Danh
2022-06-30 23:22   ` Junio C Hamano
2022-06-30 14:24 ` [PATCH 2/3] ident: rename commit_rewrite_person() to rewrite_ident_line() Siddharth Asthana
2022-06-30 15:33   ` Phillip Wood
2022-06-30 16:55     ` Christian Couder
2022-06-30 23:31   ` Junio C Hamano
2022-06-30 14:24 ` [PATCH 3/3] cat-file: add mailmap support Siddharth Asthana
2022-06-30 15:50   ` Phillip Wood
2022-06-30 16:36     ` Phillip Wood
2022-06-30 17:07     ` Christian Couder
2022-06-30 21:33       ` Junio C Hamano
2022-07-07  9:15         ` Christian Couder
2022-06-30 23:36   ` Ævar Arnfjörð Bjarmason
2022-06-30 23:53     ` Junio C Hamano
2022-07-07  9:02     ` Christian Couder [this message]
2022-06-30 23:41   ` Junio C Hamano
2022-06-30 21:18 ` [PATCH 0/3] Add support for mailmap in cat-file Junio C Hamano
2022-07-07 16:15 ` [PATCH v2 0/4] " Siddharth Asthana
2022-07-07 16:15   ` [PATCH v2 1/4] revision: improve commit_rewrite_person() Siddharth Asthana
2022-07-07 21:52     ` Junio C Hamano
2022-07-08 14:50     ` Đoàn Trần Công Danh
     [not found]       ` <CAP8UFD116xMnp27pxW8WNDf6PRJxnnwWtcy2TNHU_KyV2ZVA1g@mail.gmail.com>
2022-07-09  1:02         ` Đoàn Trần Công Danh
2022-07-09  5:04           ` Christian Couder
2022-07-07 16:15   ` [PATCH v2 2/4] ident: move commit_rewrite_person() to ident.c Siddharth Asthana
2022-07-07 16:15   ` [PATCH v2 3/4] ident: rename commit_rewrite_person() to apply_mailmap_to_header() Siddharth Asthana
2022-07-07 16:15   ` [PATCH v2 4/4] cat-file: add mailmap support Siddharth Asthana
2022-07-07 21:55     ` Junio C Hamano
2022-07-08 11:53     ` Johannes Schindelin
2022-07-07 22:06   ` [PATCH v2 0/4] Add support for mailmap in cat-file Junio C Hamano
2022-07-07 22:58     ` Junio C Hamano
2022-07-09 15:41   ` [PATCH v3 " Siddharth Asthana
2022-07-09 15:41     ` [PATCH v3 1/4] revision: improve commit_rewrite_person() Siddharth Asthana
2022-07-12 16:29       ` Johannes Schindelin
2022-07-09 15:41     ` [PATCH v3 2/4] ident: move commit_rewrite_person() to ident.c Siddharth Asthana
2022-07-09 15:41     ` [PATCH v3 3/4] ident: rename commit_rewrite_person() to apply_mailmap_to_header() Siddharth Asthana
2022-07-09 15:41     ` [PATCH v3 4/4] cat-file: add mailmap support Siddharth Asthana
2022-07-10  5:34     ` [PATCH v3 0/4] Add support for mailmap in cat-file Junio C Hamano
2022-07-12 12:34       ` Johannes Schindelin
2022-07-12 14:16         ` Junio C Hamano
2022-07-12 16:01           ` Siddharth Asthana
2022-07-12 16:06           ` Junio C Hamano
2022-07-12 16:06     ` [PATCH v4 " Siddharth Asthana
2022-07-12 16:06       ` [PATCH v4 1/4] revision: improve commit_rewrite_person() Siddharth Asthana
2022-07-13  1:25         ` Ævar Arnfjörð Bjarmason
2022-07-13 12:18           ` Christian Couder
2022-07-14 21:02         ` Junio C Hamano
2022-07-12 16:06       ` [PATCH v4 2/4] ident: move commit_rewrite_person() to ident.c Siddharth Asthana
2022-07-12 16:06       ` [PATCH v4 3/4] ident: rename commit_rewrite_person() to apply_mailmap_to_header() Siddharth Asthana
2022-07-13  1:25         ` Ævar Arnfjörð Bjarmason
2022-07-13 13:29           ` Christian Couder
2022-07-12 16:06       ` [PATCH v4 4/4] cat-file: add mailmap support Siddharth Asthana
2022-07-16  7:40       ` [PATCH v5 0/4] Add support for mailmap in cat-file Siddharth Asthana
2022-07-16  7:40         ` [PATCH v5 1/4] revision: improve commit_rewrite_person() Siddharth Asthana
2022-07-17 22:11           ` Junio C Hamano
2022-07-16  7:40         ` [PATCH v5 2/4] ident: move commit_rewrite_person() to ident.c Siddharth Asthana
2022-07-16  7:40         ` [PATCH v5 3/4] ident: rename commit_rewrite_person() to apply_mailmap_to_header() Siddharth Asthana
2022-07-16  7:40         ` [PATCH v5 4/4] cat-file: add mailmap support Siddharth Asthana
2022-07-18 19:50         ` [PATCH v6 0/4] Add support for mailmap in cat-file Siddharth Asthana
2022-07-18 19:50           ` [PATCH v6 1/4] revision: improve commit_rewrite_person() Siddharth Asthana
2022-07-18 19:51           ` [PATCH v6 2/4] ident: move commit_rewrite_person() to ident.c Siddharth Asthana
2022-07-18 19:51           ` [PATCH v6 3/4] ident: rename commit_rewrite_person() to apply_mailmap_to_header() Siddharth Asthana
2022-07-18 19:51           ` [PATCH v6 4/4] cat-file: add mailmap support Siddharth Asthana
2022-07-25 18:58           ` [PATCH v6 0/4] Add support for mailmap in cat-file Junio C Hamano
2022-07-28 19:07             ` Christian Couder
2022-07-28 19:32               ` Junio C Hamano
2022-07-30  7:50                 ` Siddharth Asthana
2022-06-30 16:25 [PATCH 3/3] cat-file: add mailmap support Nam Hồ

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