[PATCH 3/3] log: enable "-m" automatically with "--first-parent"
- From
Jeff King <peff@peff.net>
- Date
- Jul 28, 2020, 16:39 UTC
- Message-ID
- <20200728163900.GC2650252@coredump.intra.peff.net>
- In-Reply-To
- <20200728163617.GA2649887@coredump.intra.peff.net>
When using "--first-parent" to consider history as a single line of commits, git-log still defaults to treating merges specially, even though they could be considered as single commits in the linearized history (that just introduce all of the changes from the second and higher parents).
Let's instead have "--first-parent" imply "-m", which makes something like:
git log --first-parent -p
do what you'd expect. Likewise:
git log --first-parent -Sfoo
will find "foo" in merge commits.
No new test is needed; we'll tweak the output of the existing "--first-parent -p" test, which now matches the "-m --first-parent -p" test. The unchanged existing test for "--ignore-merges" confirms that the user can get the old behavior if they want.
Signed-off-by: Jeff King <peff@peff.net> --- builtin/log.c | 3 +++ t/t4013/diff.log_-p_--first-parent_master | 22 ++++++++++++++++++++++ 2 files changed, 25 insertions(+)
diff --git a/builtin/log.c b/builtin/log.c index 39b3d773a9..83b147c23a 100644 --- a/builtin/log.c +++ b/builtin/log.c @@ -731,6 +731,9 @@ static void log_setup_revisions_tweak(struct rev_info *rev, /* Turn --cc/-c into -p --cc/-c when -p was not given */ if (!rev->diffopt.output_format && rev->combine_merges) rev->diffopt.output_format = DIFF_FORMAT_PATCH; + + if (rev->first_parent_only && rev->ignore_merges < 0) + rev->ignore_merges = 0; } int cmd_log(int argc, const char **argv, const char *prefix) diff --git a/t/t4013/diff.log_-p_--first-parent_master b/t/t4013/diff.log_-p_--first-parent_master index c6a5876d80..fe044399f0 100644 --- a/t/t4013/diff.log_-p_--first-parent_master +++ b/t/t4013/diff.log_-p_--first-parent_master @@ -6,6 +6,28 @@ Date: Mon Jun 26 00:04:00 2006 +0000 Merge branch 'side' into master +diff --git a/dir/sub b/dir/sub +index cead32e..992913c 100644 +--- a/dir/sub ++++ b/dir/sub +@@ -4,3 +4,5 @@ C + D + E + F ++1 ++2 +diff --git a/file0 b/file0 +index b414108..10a8a9f 100644 +--- a/file0 ++++ b/file0 +@@ -4,3 +4,6 @@ + 4 + 5 + 6 ++A ++B ++C + commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0 Author: A U Thor <author@example.com> Date: Mon Jun 26 00:02:00 2006 +0000
-- 2.28.0.rc2.475.g53c7e1c7f4