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authorJohannes Schindelin <johannes.schindelin@gmx.de>2024-12-16 15:11:21 +0100
committerJunio C Hamano <gitster@pobox.com>2024-12-16 17:45:48 +0100
commitf8043236c6c9cb9e943a87ab2e55e8e394796727 (patch)
tree467a7cd8324222ae4db001d4d6acadd5a9e5ab58 /builtin
parentMerge branch 'js/log-remerge-keep-ancestry' into js/range-diff-diff-merges (diff)
downloadgit-f8043236c6c9cb9e943a87ab2e55e8e394796727.tar.xz
git-f8043236c6c9cb9e943a87ab2e55e8e394796727.zip
range-diff: optionally include merge commits' diffs in the analysis
The `git log` command already offers support for including diffs for merges, via the `--diff-merges=<format>` option. Let's add corresponding support for `git range-diff`, too. This makes it more convenient to spot differences between commit ranges that contain merges. This is especially true in scenarios with non-trivial merges, i.e. merges introducing changes other than, or in addition to, what merge ORT would have produced. Merging a topic branch that changes a function signature into a branch that added a caller of that function, for example, would require the merge commit itself to adjust that caller to the modified signature. In my code reviews, I found the `--diff-merges=remerge` option particularly useful. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin')
-rw-r--r--builtin/range-diff.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/builtin/range-diff.c b/builtin/range-diff.c
index 1b33ab66a7..901de5d133 100644
--- a/builtin/range-diff.c
+++ b/builtin/range-diff.c
@@ -21,6 +21,7 @@ int cmd_range_diff(int argc,
{
struct diff_options diffopt = { NULL };
struct strvec other_arg = STRVEC_INIT;
+ struct strvec diff_merges_arg = STRVEC_INIT;
struct range_diff_options range_diff_opts = {
.creation_factor = RANGE_DIFF_CREATION_FACTOR_DEFAULT,
.diffopt = &diffopt,
@@ -36,6 +37,8 @@ int cmd_range_diff(int argc,
OPT_PASSTHRU_ARGV(0, "notes", &other_arg,
N_("notes"), N_("passed to 'git log'"),
PARSE_OPT_OPTARG),
+ OPT_PASSTHRU_ARGV(0, "diff-merges", &diff_merges_arg,
+ N_("style"), N_("passed to 'git log'"), 0),
OPT_BOOL(0, "left-only", &left_only,
N_("only emit output related to the first range")),
OPT_BOOL(0, "right-only", &right_only,
@@ -62,6 +65,12 @@ int cmd_range_diff(int argc,
if (!simple_color)
diffopt.use_color = 1;
+ /* If `--diff-merges` was specified, imply `--merges` */
+ if (diff_merges_arg.nr) {
+ range_diff_opts.include_merges = 1;
+ strvec_pushv(&other_arg, diff_merges_arg.v);
+ }
+
for (i = 0; i < argc; i++)
if (!strcmp(argv[i], "--")) {
dash_dash = i;
@@ -155,6 +164,7 @@ int cmd_range_diff(int argc,
res = show_range_diff(range1.buf, range2.buf, &range_diff_opts);
strvec_clear(&other_arg);
+ strvec_clear(&diff_merges_arg);
strbuf_release(&range1);
strbuf_release(&range2);