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From: Johannes Sixt <j6t@kdbg.org>
To: Jonathan Nieder <jrnieder@gmail.com>
Cc: "Junio C Hamano" <gitster@pobox.com>,
	"Sergey Organov" <sorganov@gmail.com>,
	"Jeff King" <peff@peff.net>,
	"Philip Oakley" <philipoakley@iee.email>,
	"Elijah Newren" <newren@gmail.com>,
	"Felipe Contreras" <felipe.contreras@gmail.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Alex Henrie" <alexhenrie24@gmail.com>,
	"huang guanlong" <gl041188@gmail.com>,
	git@vger.kernel.org, "Hudson Ayers" <hudsonayers@google.com>,
	"Taylor Yu" <tlyu@mit.edu>, "Joshua Nelson" <jyn514@gmail.com>
Subject: Re: [PATCH] Revert 'diff-merges: let "-m" imply "-p"'
Date: Sat, 7 Aug 2021 08:49:12 +0200	[thread overview]
Message-ID: <035b4e99-e708-f31b-2f13-e255d99dea33@kdbg.org> (raw)
In-Reply-To: <YQ3n9Z2nH35429mC@google.com>

Am 07.08.21 um 03:55 schrieb Jonathan Nieder:
> The motivating example (Rust) shows that there is at least one script
> that _did_ use "-m" in this way.  Rust has mitigation, but the above
> logic leads me to believe that they are not the only project that will
> be affected.  And more generally, when a script author has a
> reasonable reason to believe something will work, they write scripts
> where it _does_ work, and then an update breaks their script, I think
> it's reasonable for them not to be happy.

As you know, we have "plumbing" commands with a stable interface and
"porcelain" commands for which we reserve to change the behavior without
advance notice. By your reasoning we would not need to distinguish
between the two categories and were forced to keep all behavior stable.
This undoing of a behavior change in a "porcelain" command with the
argument that one script depended on the old behavior and that others
might do so as well would set an unwanted precedent.

Perhaps we need to point script authors to "plumbing" commands more clearly?

(BTW, I have no opinion on whether -m should or should not imply -p.)

-- Hannes

  reply	other threads:[~2021-08-07  9:44 UTC|newest]

Thread overview: 129+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-29  1:44 Why doesn't `git log -m` imply `-p`? Alex Henrie
2021-04-29  3:22 ` Junio C Hamano
2021-04-29 12:38   ` Sergey Organov
2021-04-29 15:25     ` Alex Henrie
2021-04-29 16:35       ` Sergey Organov
2021-04-29 17:24         ` Alex Henrie
2021-04-29 19:07           ` Sergey Organov
2021-05-04 20:09       ` Felipe Contreras
2021-05-04 20:34         ` Sergey Organov
2021-04-29 23:27     ` Junio C Hamano
2021-04-30  4:50       ` Junio C Hamano
2021-04-30 14:00         ` Sergey Organov
2021-05-01  0:41           ` Junio C Hamano
2021-05-03 17:42             ` Sergey Organov
2021-05-04  1:15               ` Junio C Hamano
2021-05-04  9:10                 ` Sergey Organov
2021-05-04 12:38                   ` Junio C Hamano
2021-05-04 14:18                     ` Sergey Organov
2021-05-05  0:20                       ` Junio C Hamano
2021-05-05 13:43                         ` Sergey Organov
2021-05-06  0:27                           ` Junio C Hamano
2021-05-06 12:59                             ` Sergey Organov
2021-05-06 20:29                               ` Junio C Hamano
2021-05-06 20:48                                 ` Sergey Organov
2021-05-07  1:31                                   ` Alex Henrie
2021-05-10 12:11 ` Sergey Organov
2021-05-10 16:56   ` Alex Henrie
2021-05-10 15:34 ` [PATCH 0/6] diff-merges: let -m imply -p Sergey Organov
2021-05-10 15:34   ` [PATCH 1/6] t4013: add test for "git diff-index -m" Sergey Organov
2021-05-10 15:34   ` [PATCH 2/6] diff-merges: move specific diff-index "-m" handling to diff-index Sergey Organov
2021-05-11  4:09     ` Junio C Hamano
2021-05-11  5:23       ` Junio C Hamano
2021-05-11  5:41         ` Junio C Hamano
2021-05-11 13:43       ` Sergey Organov
2021-05-10 15:34   ` [PATCH 3/6] git-svn: stop passing "-m" to "git rev-list" Sergey Organov
2021-05-10 15:34   ` [PATCH 4/6] stash list: stop passing "-m" to "git list" Sergey Organov
2021-05-10 15:34   ` [PATCH 5/6] diff-merges: rename "combined_imply_patch" to "merges_imply_patch" Sergey Organov
2021-05-10 15:34   ` [PATCH 6/6] diff-merges: let -m imply -p Sergey Organov
2021-05-11  4:14     ` Junio C Hamano
2021-05-11  4:56       ` Junio C Hamano
2021-05-11 14:03         ` Sergey Organov
2021-05-11 17:13           ` Alex Henrie
2021-05-11 18:46             ` Sergey Organov
2021-05-11 19:53               ` Alex Henrie
2021-05-11 20:27                 ` Sergey Organov
2021-05-12  1:16                   ` Felipe Contreras
2021-05-11 18:31           ` Elijah Newren
2021-05-11 19:00             ` Sergey Organov
2021-05-11 19:56               ` Elijah Newren
2021-05-11 20:32                 ` Sergey Organov
2021-05-11 20:43             ` Junio C Hamano
2021-05-11 21:38               ` Sergey Organov
2021-05-11 23:40                 ` Junio C Hamano
2021-05-19 21:44             ` Jonathan Nieder
2021-05-20 20:39               ` Sergey Organov
2021-05-21 18:14                 ` Felipe Contreras
2021-05-11 16:29         ` Sergey Organov
2021-05-17 12:57         ` Sergey Organov
2021-05-11 16:30       ` Sergey Organov
2021-05-19 21:48     ` Jonathan Nieder
2021-05-19 22:03       ` Sergey Organov
2021-05-19 23:32       ` Junio C Hamano
2021-05-20 13:14         ` Sergey Organov
2021-05-20 18:50           ` Jonathan Nieder
2021-05-20 19:38             ` Sergey Organov
2021-05-17 15:58 ` [PATCH v1 0/9] " Sergey Organov
2021-05-17 15:58   ` [PATCH v1 1/9] t4013: test that "-m" alone has no effect in "git log" Sergey Organov
2021-05-17 15:58   ` [PATCH v1 2/9] t4013: test "git -m --raw" Sergey Organov
2021-05-18  3:27     ` Bagas Sanjaya
2021-05-18 12:13       ` Sergey Organov
2021-05-17 15:58   ` [PATCH v1 3/9] t4013: test "git -m --stat" Sergey Organov
2021-05-17 15:58   ` [PATCH v1 4/9] t4013: test "git diff-index -m" Sergey Organov
2021-05-17 15:58   ` [PATCH v1 5/9] diff-merges: move specific diff-index "-m" handling to diff-index Sergey Organov
2021-05-17 20:10     ` Junio C Hamano
2021-05-17 20:24       ` Sergey Organov
2021-05-17 20:29     ` Junio C Hamano
2021-05-17 21:00       ` Sergey Organov
2021-05-17 15:58   ` [PATCH v1 6/9] git-svn: stop passing "-m" to "git rev-list" Sergey Organov
2021-05-17 15:58   ` [PATCH v1 7/9] stash list: stop passing "-m" to "git list" Sergey Organov
2021-05-17 15:58   ` [PATCH v1 8/9] diff-merges: rename "combined_imply_patch" to "merges_imply_patch" Sergey Organov
2021-05-17 15:58   ` [PATCH v1 9/9] diff-merges: let "-m" imply "-p" Sergey Organov
2021-05-17 19:51   ` [PATCH v1 0/9] diff-merges: let -m imply -p Junio C Hamano
2021-05-17 20:11     ` Sergey Organov
2021-05-18  3:18   ` Bagas Sanjaya
2021-05-18 12:03     ` Sergey Organov
2021-05-18 12:17     ` Sergey Organov
2021-05-18 14:17   ` Junio C Hamano
2021-05-18 15:52     ` Sergey Organov
2021-05-19 11:45 ` [PATCH v2 " Sergey Organov
2021-05-19 11:45   ` [PATCH v2 1/9] t4013: test that "-m" alone has no effect in "git log" Sergey Organov
2021-05-19 11:45   ` [PATCH v2 2/9] t4013: test "git log -m --raw" Sergey Organov
2021-05-19 11:45   ` [PATCH v2 3/9] t4013: test "git log -m --stat" Sergey Organov
2021-05-19 11:45   ` [PATCH v2 4/9] t4013: test "git diff-index -m" Sergey Organov
2021-05-19 11:45   ` [PATCH v2 5/9] diff-merges: move specific diff-index "-m" handling to diff-index Sergey Organov
2021-05-19 11:45   ` [PATCH v2 6/9] git-svn: stop passing "-m" to "git rev-list" Sergey Organov
2021-05-19 11:45   ` [PATCH v2 7/9] stash list: stop passing "-m" to "git log" Sergey Organov
2021-05-19 11:45   ` [PATCH v2 8/9] diff-merges: rename "combined_imply_patch" to "merges_imply_patch" Sergey Organov
2021-05-19 11:45   ` [PATCH v2 9/9] diff-merges: let "-m" imply "-p" Sergey Organov
2021-05-20 21:46 ` [PATCH v3 00/10] diff-merges: let -m imply -p Sergey Organov
2021-05-20 21:46   ` [PATCH v3 01/10] t4013: test that "-m" alone has no effect in "git log" Sergey Organov
2021-05-20 21:46   ` [PATCH v3 02/10] t4013: test "git log -m --raw" Sergey Organov
2021-05-20 21:46   ` [PATCH v3 03/10] t4013: test "git log -m --stat" Sergey Organov
2021-05-20 21:46   ` [PATCH v3 04/10] t4013: test "git diff-tree -m" Sergey Organov
2021-05-20 21:46   ` [PATCH v3 05/10] t4013: test "git diff-index -m" Sergey Organov
2021-05-20 21:46   ` [PATCH v3 06/10] diff-merges: move specific diff-index "-m" handling to diff-index Sergey Organov
2021-05-20 21:47   ` [PATCH v3 07/10] git-svn: stop passing "-m" to "git rev-list" Sergey Organov
2021-05-20 21:47   ` [PATCH v3 08/10] stash list: stop passing "-m" to "git log" Sergey Organov
2021-05-20 21:47   ` [PATCH v3 09/10] diff-merges: rename "combined_imply_patch" to "merges_imply_patch" Sergey Organov
2021-05-20 21:47   ` [PATCH v3 10/10] diff-merges: let "-m" imply "-p" Sergey Organov
2021-08-05  3:16     ` Jonathan Nieder
2021-08-06  1:45       ` [PATCH] Revert 'diff-merges: let "-m" imply "-p"' Jonathan Nieder
2021-08-06 17:21         ` Junio C Hamano
2021-08-06 17:55           ` Junio C Hamano
2021-08-06 19:57             ` Jonathan Nieder
2021-08-08 17:55               ` Junio C Hamano
2021-08-17  9:13                 ` Sergey Organov
2021-08-17 22:10                   ` Junio C Hamano
2021-08-18  8:56                     ` Sergey Organov
2021-08-19 18:50                       ` Junio C Hamano
2021-08-19 18:51                         ` Junio C Hamano
2021-08-20 10:24                         ` Sergey Organov
2021-08-07  1:55           ` Jonathan Nieder
2021-08-07  6:49             ` Johannes Sixt [this message]
2021-08-07 13:51               ` Jonathan Nieder
2021-08-07 17:00                 ` Junio C Hamano
2021-08-07 18:08                   ` Jonathan Nieder
2021-08-08  0:42                     ` Junio C Hamano
2021-08-17  9:17                       ` Sergey Organov
2021-08-16  9:09       ` [PATCH v3 10/10] diff-merges: let "-m" imply "-p" Sergey Organov

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