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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>,
	git@vger.kernel.org, "Sergey Organov" <sorganov@gmail.com>
Subject: [PATCH v1 0/5] git log: configurable default format for merge diffs
Date: Sat, 10 Apr 2021 20:16:52 +0300	[thread overview]
Message-ID: <20210410171657.20159-1-sorganov@gmail.com> (raw)
In-Reply-To: <20210407225608.14611-1-sorganov@gmail.com>

These patches introduce capability to configure the default format of
output of diffs for merge commits by means of new log.diffMerges
configuration variable. The default format is then used by -m,
--diff-merges=m, and new --diff-merges=default options.

In particular,

  git config log.diffMerges first-parent

will change -m option format from "separate" to "first-parent" that
will in turn cause, say,

  git show -m <merge_commit>

to output diff to the first parent only, instead of appending
typically large and surprising diff to the second parent at the end of
the output.

Updates in v1:

  * Renamed abbreviated value "def" to full "default"

  * Fixed tests to use "test_config" instead of "git config"

  * Meld all "git config" changes into single commit that includes
    code, documentation, and tests, as they are mutually
    interdependent.

Sergey Organov (5):
  diff-merges: introduce --diff-merges=default
  diff-merges: refactor set_diff_merges()
  diff-merges: adapt -m to enable default diff format
  diff-merges: introduce log.diffMerges config variable
  doc/diff-options: document new --diff-merges features

 Documentation/config/log.txt   |  5 +++
 Documentation/diff-options.txt | 15 ++++++---
 builtin/log.c                  |  2 ++
 diff-merges.c                  | 58 ++++++++++++++++++++++++----------
 diff-merges.h                  |  2 ++
 t/t4013-diff-various.sh        | 31 ++++++++++++++++++
 t/t9902-completion.sh          |  3 ++
 7 files changed, 95 insertions(+), 21 deletions(-)

Interdiff against v0:
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 09b07231b5a4..31e2bacf5252 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -34,7 +34,7 @@ endif::git-diff[]
 endif::git-format-patch[]
 
 ifdef::git-log[]
---diff-merges=(off|none|def|first-parent|1|separate|m|combined|c|dense-combined|cc)::
+--diff-merges=(off|none|default|first-parent|1|separate|m|combined|c|dense-combined|cc)::
 --no-diff-merges::
 	Specify diff format to be used for merge commits. Default is
 	{diff-merges-default} unless `--first-parent` is in use, in which case
@@ -45,7 +45,7 @@ ifdef::git-log[]
 	Disable output of diffs for merge commits. Useful to override
 	implied value.
 +
---diff-merges=def:::
+--diff-merges=default:::
 --diff-merges=m:::
 -m:::
 	This option makes diff output for merge commits to be shown in
diff --git a/diff-merges.c b/diff-merges.c
index f68e4376fd63..75630fb8e6b8 100644
--- a/diff-merges.c
+++ b/diff-merges.c
@@ -67,7 +67,7 @@ static diff_merges_setup_func_t func_by_opt(const char *optarg)
 		return set_combined;
 	else if (!strcmp(optarg, "cc") || !strcmp(optarg, "dense-combined"))
 		return set_dense_combined;
-	else if (!strcmp(optarg, "m") || !strcmp(optarg, "def"))
+	else if (!strcmp(optarg, "m") || !strcmp(optarg, "default"))
 		return set_to_default;
 	return NULL;
 }
diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index ee4afca06ced..87cab7867135 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -452,37 +452,34 @@ diff-tree --stat --compact-summary initial mode
 diff-tree -R --stat --compact-summary initial mode
 EOF
 
-test_expect_success 'log --diff-merges=def matches --diff-merges=separate' '
+test_expect_success 'log --diff-merges=default matches --diff-merges=separate' '
 	git log -p --diff-merges=separate master >result &&
 	process_diffs result >expected &&
-	git log -p --diff-merges=def master >result &&
+	git log -p --diff-merges=default master >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
 
 test_expect_success 'deny wrong log.diffMerges config' '
-	git config log.diffMerges wrong-value &&
-	test_expect_code 128 git log &&
-	git config --unset log.diffMerges
+	test_config log.diffMerges wrong-value &&
+	test_expect_code 128 git log
 '
 
 test_expect_success 'git config log.diffMerges first-parent' '
 	git log -p --diff-merges=first-parent master >result &&
 	process_diffs result >expected &&
-	git config log.diffMerges first-parent &&
-	git log -p --diff-merges=def master >result &&
+	test_config log.diffMerges first-parent &&
+	git log -p --diff-merges=default master >result &&
 	process_diffs result >actual &&
-	git config --unset log.diffMerges &&
 	test_cmp expected actual
 '
 
 test_expect_success 'git config log.diffMerges first-parent vs -m' '
 	git log -p --diff-merges=first-parent master >result &&
 	process_diffs result >expected &&
-	git config log.diffMerges first-parent &&
+	test_config log.diffMerges first-parent &&
 	git log -p -m master >result &&
 	process_diffs result >actual &&
-	git config --unset log.diffMerges &&
 	test_cmp expected actual
 '
 
-- 
2.25.1


  parent reply	other threads:[~2021-04-10 17:17 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 22:55 [PATCH 0/9] " Sergey Organov
2021-04-07 22:56 ` [PATCH 1/9] diff-merges: introduce --diff-merges=def Sergey Organov
2021-04-08 11:48   ` Philip Oakley
2021-04-08 14:21     ` Sergey Organov
2021-04-08 17:27       ` Junio C Hamano
2021-04-08 17:38         ` Sergey Organov
2021-04-07 22:56 ` [PATCH 2/9] diff-merges: refactor set_diff_merges() Sergey Organov
2021-04-07 22:56 ` [PATCH 3/9] diff-merges: introduce log.diffMerges config variable Sergey Organov
2021-04-08 21:37   ` SZEDER Gábor
2021-04-08 21:51     ` SZEDER Gábor
2021-04-08 22:01       ` Junio C Hamano
2021-04-08 23:04       ` Sergey Organov
2021-04-07 22:56 ` [PATCH 4/9] diff-merges: adapt -m to enable default diff format Sergey Organov
2021-04-07 22:56 ` [PATCH 5/9] t4013: add test for --diff-merges=def Sergey Organov
2021-04-07 22:56 ` [PATCH 6/9] t4013: add tests for log.diffMerges config Sergey Organov
2021-04-07 23:06   ` Ævar Arnfjörð Bjarmason
2021-04-07 23:35     ` Junio C Hamano
2021-04-08 14:25     ` Sergey Organov
2021-04-07 22:56 ` [PATCH 7/9] t9902: fix completion tests for log.d* to match log.diffMerges Sergey Organov
2021-04-07 23:05   ` Ævar Arnfjörð Bjarmason
2021-04-08 14:41     ` Sergey Organov
2021-04-08 19:50       ` Ævar Arnfjörð Bjarmason
2021-04-08 20:26         ` Sergey Organov
2021-04-08 22:13           ` SZEDER Gábor
2021-04-08 23:07             ` Sergey Organov
2021-04-07 22:56 ` [PATCH 8/9] doc/diff-options: document new --diff-merges features Sergey Organov
2021-04-07 22:56 ` [PATCH 9/9] doc/config: document log.diffMerges Sergey Organov
2021-04-10 17:16 ` Sergey Organov [this message]
2021-04-10 17:16   ` [PATCH v1 1/5] diff-merges: introduce --diff-merges=default Sergey Organov
2021-04-10 17:16   ` [PATCH v1 2/5] diff-merges: refactor set_diff_merges() Sergey Organov
2021-04-10 17:16   ` [PATCH v1 3/5] diff-merges: adapt -m to enable default diff format Sergey Organov
2021-04-10 17:16   ` [PATCH v1 4/5] diff-merges: introduce log.diffMerges config variable Sergey Organov
2021-04-10 17:16   ` [PATCH v1 5/5] doc/diff-options: document new --diff-merges features Sergey Organov
2021-04-11 16:13   ` [PATCH v1 0/5] git log: configurable default format for merge diffs Junio C Hamano
2021-04-11 18:04     ` Sergey Organov
2021-04-11 19:02       ` Junio C Hamano
2021-04-11 20:38         ` Sergey Organov
2021-04-11 21:58         ` Sergey Organov
2021-04-13 11:41 ` [PATCH v2 " Sergey Organov
2021-04-13 11:41   ` [PATCH v2 1/5] diff-merges: introduce --diff-merges=on Sergey Organov
2021-04-13 23:18     ` Junio C Hamano
2021-04-13 11:41   ` [PATCH v2 2/5] diff-merges: refactor set_diff_merges() Sergey Organov
2021-04-13 11:41   ` [PATCH v2 3/5] diff-merges: adapt -m to enable default diff format Sergey Organov
2021-04-13 11:41   ` [PATCH v2 4/5] diff-merges: introduce log.diffMerges config variable Sergey Organov
2021-04-15 20:21     ` Junio C Hamano
2021-04-16  8:30       ` Sergey Organov
2021-04-13 11:41   ` [PATCH v2 5/5] doc/diff-options: document new --diff-merges features Sergey Organov

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