When we have a rename/rename(1to2) conflict, each of the renames can
collide with a file addition. Each of these rename/add conflicts suffered
from the same kinds of problems that normal rename/add suffered from.
Make the code use handle_file_conflicts() as well so that we get all the
same fixes and consistent behavior between the different conflict types.
Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
merge-recursive.c | 154 +++++++++++++--------------
t/t6042-merge-rename-corner-cases.sh | 29 +++--
t/t6043-merge-rename-directories.sh | 24 +++--
3 files changed, 113 insertions(+), 94 deletions(-)
diff --git a/merge-recursive.c b/merge-recursive.c
index c78b347112..59811116b6 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1709,80 +1709,17 @@ static int handle_rename_add(struct merge_options *o,
ci->dst_entry1->stages[other_stage].mode);
}
-static int handle_file(struct merge_options *o,
- struct diff_filespec *rename,
- int stage,
- struct rename_conflict_info *ci)
-{
- char *dst_name = rename->path;
- struct stage_data *dst_entry;
- const char *cur_branch, *other_branch;
- struct diff_filespec other;
- struct diff_filespec *add;
- int ret;
-
- if (stage == 2) {
- dst_entry = ci->dst_entry1;
- cur_branch = ci->branch1;
- other_branch = ci->branch2;
- } else {
- dst_entry = ci->dst_entry2;
- cur_branch = ci->branch2;
- other_branch = ci->branch1;
- }
-
- add = filespec_from_entry(&other, dst_entry, stage ^ 1);
- if (add) {
- int ren_src_was_dirty = was_dirty(o, rename->path);
- char *add_name = unique_path(o, rename->path, other_branch);
- if (update_file(o, 0, &add->oid, add->mode, add_name))
- return -1;
-
- if (ren_src_was_dirty) {
- output(o, 1, _("Refusing to lose dirty file at %s"),
- rename->path);
- }
- /*
- * Because the double negatives somehow keep confusing me...
- * 1) update_wd iff !ren_src_was_dirty.
- * 2) no_wd iff !update_wd
- * 3) so, no_wd == !!ren_src_was_dirty == ren_src_was_dirty
- */
- remove_file(o, 0, rename->path, ren_src_was_dirty);
- dst_name = unique_path(o, rename->path, cur_branch);
- } else {
- if (dir_in_way(rename->path, !o->call_depth, 0)) {
- dst_name = unique_path(o, rename->path, cur_branch);
- output(o, 1, _("%s is a directory in %s adding as %s instead"),
- rename->path, other_branch, dst_name);
- } else if (!o->call_depth &&
- would_lose_untracked(rename->path)) {
- dst_name = unique_path(o, rename->path, cur_branch);
- output(o, 1, _("Refusing to lose untracked file at %s; "
- "adding as %s instead"),
- rename->path, dst_name);
- }
- }
- if ((ret = update_file(o, 0, &rename->oid, rename->mode, dst_name)))
- ; /* fall through, do allow dst_name to be released */
- else if (stage == 2)
- ret = update_stages(o, rename->path, NULL, rename, add);
- else
- ret = update_stages(o, rename->path, NULL, add, rename);
-
- if (dst_name != rename->path)
- free(dst_name);
-
- return ret;
-}
-
static int handle_rename_rename_1to2(struct merge_options *o,
struct rename_conflict_info *ci)
{
/* One file was renamed in both branches, but to different names. */
+ struct merge_file_info mfi;
+ struct diff_filespec other;
+ struct diff_filespec *add;
struct diff_filespec *one = ci->pair1->one;
struct diff_filespec *a = ci->pair1->two;
struct diff_filespec *b = ci->pair2->two;
+ char *path_desc;
output(o, 1, _("CONFLICT (rename/rename): "
"Rename \"%s\"->\"%s\" in branch \"%s\" "
@@ -1790,15 +1727,16 @@ static int handle_rename_rename_1to2(struct merge_options *o,
one->path, a->path, ci->branch1,
one->path, b->path, ci->branch2,
o->call_depth ? _(" (left unresolved)") : "");
- if (o->call_depth) {
- struct merge_file_info mfi;
- struct diff_filespec other;
- struct diff_filespec *add;
- if (merge_mode_and_contents(o, one, a, b, one->path,
- ci->branch1, ci->branch2,
- o->call_depth * 2, &mfi))
- return -1;
+ path_desc = xstrfmt("%s and %s, both renamed from %s",
+ a->path, b->path, one->path);
+ if (merge_mode_and_contents(o, one, a, b, path_desc,
+ ci->branch1, ci->branch2,
+ o->call_depth * 2, &mfi))
+ return -1;
+ free(path_desc);
+
+ if (o->call_depth) {
/*
* FIXME: For rename/add-source conflicts (if we could detect
* such), this is wrong. We should instead find a unique
@@ -1830,8 +1768,70 @@ static int handle_rename_rename_1to2(struct merge_options *o,
}
else
remove_file_from_cache(b->path);
- } else if (handle_file(o, a, 2, ci) || handle_file(o, b, 3, ci))
- return -1;
+ } else {
+ /*
+ * For each destination path, we need to see if there is a
+ * rename/add collision. If not, we can write the file out
+ * to the specified location.
+ */
+ add = filespec_from_entry(&other, ci->dst_entry1, 2 ^ 1);
+ if (add) {
+ if (handle_file_collision(o, a->path,
+ NULL, NULL,
+ ci->branch1, ci->branch2,
+ &mfi.oid, mfi.mode,
+ &add->oid, add->mode) < 0)
+ return -1;
+ } else {
+ char *new_path = NULL;
+ if (dir_in_way(a->path, !o->call_depth, 0)) {
+ new_path = unique_path(o, a->path, ci->branch1);
+ output(o, 1, _("%s is a directory in %s adding "
+ "as %s instead"),
+ a->path, ci->branch2, new_path);
+ } else if (would_lose_untracked(a->path)) {
+ new_path = unique_path(o, a->path, ci->branch1);
+ output(o, 1, _("Refusing to lose untracked file"
+ " at %s; adding as %s instead"),
+ a->path, new_path);
+ }
+
+ if (update_file(o, 0, &mfi.oid, mfi.mode, new_path ? new_path : a->path))
+ return -1;
+ free(new_path);
+ if (update_stages(o, a->path, NULL, a, NULL))
+ return -1;
+ }
+
+ add = filespec_from_entry(&other, ci->dst_entry2, 3 ^ 1);
+ if (add) {
+ if (handle_file_collision(o, b->path,
+ NULL, NULL,
+ ci->branch1, ci->branch2,
+ &add->oid, add->mode,
+ &mfi.oid, mfi.mode) < 0)
+ return -1;
+ } else {
+ char *new_path = NULL;
+ if (dir_in_way(b->path, !o->call_depth, 0)) {
+ new_path = unique_path(o, b->path, ci->branch2);
+ output(o, 1, _("%s is a directory in %s adding "
+ "as %s instead"),
+ b->path, ci->branch1, new_path);
+ } else if (would_lose_untracked(b->path)) {
+ new_path = unique_path(o, b->path, ci->branch2);
+ output(o, 1, _("Refusing to lose untracked file"
+ " at %s; adding as %s instead"),
+ b->path, new_path);
+ }
+
+ if (update_file(o, 0, &mfi.oid, mfi.mode, new_path ? new_path : b->path))
+ return -1;
+ free(new_path);
+ if (update_stages(o, b->path, NULL, NULL, b))
+ return -1;
+ }
+ }
return 0;
}
diff --git a/t/t6042-merge-rename-corner-cases.sh b/t/t6042-merge-rename-corner-cases.sh
index 4cfcde3082..534f7b55a1 100755
--- a/t/t6042-merge-rename-corner-cases.sh
+++ b/t/t6042-merge-rename-corner-cases.sh
@@ -684,7 +684,7 @@ test_expect_success 'rename/rename/add-dest merge still knows about conflicting
git ls-files -u c >out &&
test_line_count = 2 out &&
git ls-files -o >out &&
- test_line_count = 5 out &&
+ test_line_count = 1 out &&
git rev-parse >expect \
A:a C:b B:b C:c B:c &&
@@ -692,14 +692,27 @@ test_expect_success 'rename/rename/add-dest merge still knows about conflicting
:1:a :2:b :3:b :2:c :3:c &&
test_cmp expect actual &&
- git rev-parse >expect \
- C:c B:c C:b B:b &&
- git hash-object >actual \
- c~HEAD c~B\^0 b~HEAD b~B\^0 &&
- test_cmp expect actual &&
+ # Record some contents for re-doing merges
+ git cat-file -p A:a >stuff &&
+ git cat-file -p C:b >important_info &&
+ git cat-file -p B:c >precious_data &&
+ >empty &&
- test_path_is_missing b &&
- test_path_is_missing c
+ # Test the merge in b
+ test_must_fail git merge-file \
+ -L "HEAD" \
+ -L "" \
+ -L "B^0" \
+ important_info empty stuff &&
+ test_cmp important_info b &&
+
+ # Test the merge in c
+ test_must_fail git merge-file \
+ -L "HEAD" \
+ -L "" \
+ -L "B^0" \
+ stuff empty precious_data &&
+ test_cmp stuff c
)
'
diff --git a/t/t6043-merge-rename-directories.sh b/t/t6043-merge-rename-directories.sh
index fedaeafc55..5c01a0c14a 100755
--- a/t/t6043-merge-rename-directories.sh
+++ b/t/t6043-merge-rename-directories.sh
@@ -1078,7 +1078,7 @@ test_expect_success '5c-check: Transitive rename would cause rename/rename/renam
git ls-files -u >out &&
test_line_count = 6 out &&
git ls-files -o >out &&
- test_line_count = 3 out &&
+ test_line_count = 1 out &&
git rev-parse >actual \
:0:y/b :0:y/c :0:y/e &&
@@ -1094,9 +1094,9 @@ test_expect_success '5c-check: Transitive rename would cause rename/rename/renam
test_cmp expect actual &&
git hash-object >actual \
- w/d~HEAD w/d~B^0 z/d &&
+ z/d &&
git rev-parse >expect \
- O:x/d B:w/d O:x/d &&
+ O:x/d &&
test_cmp expect actual &&
test_path_is_missing x/d &&
test_path_is_file y/d &&
@@ -3672,7 +3672,7 @@ test_expect_success '11e-check: Avoid deleting not-uptodate with dir rename/rena
git ls-files -u >out &&
test_line_count = 4 out &&
git ls-files -o >out &&
- test_line_count = 4 out &&
+ test_line_count = 3 out &&
echo different >expected &&
echo mods >>expected &&
@@ -3684,11 +3684,17 @@ test_expect_success '11e-check: Avoid deleting not-uptodate with dir rename/rena
O:z/a O:z/b O:x/d O:x/c O:x/c A:y/c O:x/c &&
test_cmp expect actual &&
- git hash-object >actual \
- y/c~B^0 y/c~HEAD &&
- git rev-parse >expect \
- O:x/c A:y/c &&
- test_cmp expect actual
+ # See if y/c~merged has expected contents; requires manually
+ # doing the expected file merge
+ git cat-file -p A:y/c >c1 &&
+ git cat-file -p B:z/c >c2 &&
+ >empty &&
+ test_must_fail git merge-file \
+ -L "HEAD" \
+ -L "" \
+ -L "B^0" \
+ c1 empty c2 &&
+ test_cmp c1 y/c~merged
)
'
--
2.19.0.3.g98f21ceff2.dirty
