[PATCH 3/3] merge-recursive: D/F conflicts where was_a_dir/file -> was_a_dir
In merge-recursive.c, whenever there was a rename where a file name on one
side of the rename matches a directory name on the other side of the merge,
then the very first check that
string_list_has_string(&o->current_directory_set, ren1_dst)
would trigger forcing it into marking it as a rename/directory conflict.
However, if the path is only renamed on one side and a simple three-way merge between the separate files resolves cleanly, then we don't need to mark it as a rename/directory conflict. So, we can simply move the check for rename/directory conflicts after we've verified that there isn't a rename/rename conflict and that a threeway content merge doesn't work.
This changes the particular error message one gets in the case where the
directory name that a file on one side of the rename matches is not also
part of the rename pair. For example, with commits containing the files:
COMMON -> (HEAD, MERGE )
--------- --------------- -------
sub/file1 -> (sub/file1, newsub)
<NULL> -> (newsub/newfile, <NULL>)
then previously when one tried to merge MERGE into HEAD, one would get
CONFLICT (rename/directory): Rename sub/file1->newsub in HEAD directory newsub added in merge
Renaming sub/file1 to newsub~HEAD instead
Adding newsub/newfile
Automatic merge failed; fix conflicts and then commit the result.
After this patch, the error message will instead become:
Removing newsub
Adding newsub/newfile
CONFLICT (file/directory): There is a directory with name newsub in merge. Adding newsub as newsub~HEAD
Automatic merge failed; fix conflicts and then commit the result.
That makes more sense to me, because git can't know that there's a conflict
until after it's tried resolving paths involving newsub/newfile to see if
they are still in the way at the end (and if newsub/newfile is not in the
way at the end, there should be no conflict at all, which did not hold with
git previously).
Signed-off-by: Elijah Newren <newren@gmail.com>
---
merge-recursive.c | 16 ++++++++--------
t/t3509-cherry-pick-merge-df.sh | 4 ++--
2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/merge-recursive.c b/merge-recursive.c
index 5e2886a..645a79d 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -946,14 +946,7 @@ static int process_renames(struct merge_options *o,
try_merge = 0;
- if (string_list_has_string(&o->current_directory_set, ren1_dst)) {
- clean_merge = 0;
- output(o, 1, "CONFLICT (rename/directory): Rename %s->%s in %s "
- " directory %s added in %s",
- ren1_src, ren1_dst, branch1,
- ren1_dst, branch2);
- conflict_rename_dir(o, ren1, branch1);
- } else if (sha_eq(src_other.sha1, null_sha1)) {
+ if (sha_eq(src_other.sha1, null_sha1)) {
clean_merge = 0;
output(o, 1, "CONFLICT (rename/delete): Rename %s->%s in %s "
"and deleted in %s",
@@ -1046,6 +1039,13 @@ static int process_renames(struct merge_options *o,
if (!ren1->dst_entry->stages[2].mode !=
!ren1->dst_entry->stages[3].mode)
ren1->dst_entry->processed = 0;
+ } else if (string_list_has_string(&o->current_directory_set, ren1_dst)) {
+ clean_merge = 0;
+ output(o, 1, "CONFLICT (rename/directory): Rename %s->%s in %s "
+ " directory %s added in %s",
+ ren1_src, ren1_dst, branch1,
+ ren1_dst, branch2);
+ conflict_rename_dir(o, ren1, branch1);
} else {
if (mfi.merge || !mfi.clean)
output(o, 1, "Renaming %s => %s", ren1_src, ren1_dst);
diff --git a/t/t3509-cherry-pick-merge-df.sh b/t/t3509-cherry-pick-merge-df.sh
index eb5826f..948ca1b 100755
--- a/t/t3509-cherry-pick-merge-df.sh
+++ b/t/t3509-cherry-pick-merge-df.sh
@@ -58,7 +58,7 @@ test_expect_success 'Cherry-pick succeeds with was_a_dir/file -> was_a_dir (reso
git cherry-pick --strategy=resolve simple
'
-test_expect_failure 'Cherry-pick succeeds with was_a_dir/file -> was_a_dir (recursive)' '
+test_expect_success 'Cherry-pick succeeds with was_a_dir/file -> was_a_dir (recursive)' '
git reset --hard &&
git checkout -q nick-testcase^0 &&
git cherry-pick --strategy=recursive simple
@@ -92,7 +92,7 @@ test_expect_success 'Cherry-pick with rename to different D/F conflict succeeds
git cherry-pick --strategy=resolve mergeme
'
-test_expect_failure 'Cherry-pick with rename to different D/F conflict succeeds (recursive)' '
+test_expect_success 'Cherry-pick with rename to different D/F conflict succeeds (recursive)' '
git reset --hard &&
git checkout -q newhead^0 &&
git cherry-pick --strategy=recursive mergeme
--
1.7.3.rc0.170.g5cfb0.dirty
