@@ -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:::
@@ -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;
@@ -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 &&
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 produces 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, however, 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(-)