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From: Sergey Organov <sorganov@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: "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>,
	git@vger.kernel.org, "Sergey Organov" <sorganov@gmail.com>
Subject: [PATCH v1 9/9] diff-merges: let "-m" imply "-p"
Date: Mon, 17 May 2021 18:58:18 +0300	[thread overview]
Message-ID: <20210517155818.32224-10-sorganov@gmail.com> (raw)
In-Reply-To: <20210517155818.32224-1-sorganov@gmail.com>

Fix long standing inconsistency between -c/--cc that do imply -p, on
one side, and -m that did not imply -p, on the other side.

Change corresponding test accordingly, as "log -m" output should now
match one from "log -m -p", rather than from just "log".

Change documentation accordingly.

NOTES:

After this patch

  git log -m

will start to produce diffs without need to provide -p as well, that
improves both consistency and usability. It gets even more useful if
one sets "log.diffMerges" configuration variable to "first-parent" to
force -m produce usual diff with respect to first parent only.

This patch does not change behavior when specific diff format is
explicitly provided on the command-line, so that commands like

  git log -m --raw
  git log -m --stat

are not affected.

Exact historical semantics of -m is still provided by
--diff-merges=separate.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
---
 Documentation/diff-options.txt | 8 ++++----
 diff-merges.c                  | 1 +
 t/t4013-diff-various.sh        | 4 ++--
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 530d1159141f..32e6dee5ac3b 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -49,10 +49,9 @@ ifdef::git-log[]
 --diff-merges=m:::
 -m:::
 	This option makes diff output for merge commits to be shown in
-	the default format. `-m` will produce the output only if `-p`
-	is given as well. The default format could be changed using
+	the default format. The default format could be changed using
 	`log.diffMerges` configuration parameter, which default value
-	is `separate`.
+	is `separate`. `-m` implies `-p`.
 +
 --diff-merges=first-parent:::
 --diff-merges=1:::
@@ -62,7 +61,8 @@ ifdef::git-log[]
 --diff-merges=separate:::
 	This makes merge commits show the full diff with respect to
 	each of the parents. Separate log entry and diff is generated
-	for each parent.
+	for each parent. This is the format that `-m` produced
+	historically.
 +
 --diff-merges=combined:::
 --diff-merges=c:::
diff --git a/diff-merges.c b/diff-merges.c
index d897fd8a2933..0dfcaa1b11b0 100644
--- a/diff-merges.c
+++ b/diff-merges.c
@@ -107,6 +107,7 @@ int diff_merges_parse_opts(struct rev_info *revs, const char **argv)
 
 	if (!strcmp(arg, "-m")) {
 		set_to_default(revs);
+		revs->merges_imply_patch = 1;
 	} else if (!strcmp(arg, "-c")) {
 		set_combined(revs);
 		revs->merges_imply_patch = 1;
diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index c35cc73d08bd..15ca3c75bff7 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -454,8 +454,8 @@ diff-tree --stat --compact-summary initial mode
 diff-tree -R --stat --compact-summary initial mode
 EOF
 
-test_expect_success 'log -m matches pure log' '
-	git log master >result &&
+test_expect_success 'log -m matches log -m -p' '
+	git log -m -p master >result &&
 	process_diffs result >expected &&
 	git log -m >result &&
 	process_diffs result >actual &&
-- 
2.25.1


  parent reply	other threads:[~2021-05-17 16:43 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   ` Sergey Organov [this message]
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
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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