[PATCH 28/30] merge-recursive: Avoid clobbering untracked files with directory renames
Signed-off-by: Elijah Newren <newren@gmail.com>
---
merge-recursive.c | 39 +++++++++++++++++++++++++++++++++++--
t/t6043-merge-rename-directories.sh | 6 +++---
2 files changed, 40 insertions(+), 5 deletions(-)
diff --git a/merge-recursive.c b/merge-recursive.c
index 838bfd32ec..1b3ee5b9fb 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1129,6 +1129,25 @@ static int conflict_rename_dir(struct merge_options *o,
{
const struct diff_filespec *dest = pair->two;
+ if (!o->call_depth && would_lose_untracked(dest->path)) {
+ char *alt_path = unique_path(o, dest->path, rename_branch);
+ output(o, 1, _("Error: Refusing to lose untracked file at %s; "
+ "writing to %s instead."),
+ dest->path, alt_path);
+ /*
+ * Write the file in worktree at alt_path, but not in the
+ * index. Instead, write to dest->path for the index but
+ * only at the higher appropriate stage.
+ */
+ if (update_file(o, 0, &dest->oid, dest->mode, alt_path))
+ return -1;
+ free(alt_path);
+ return update_stages(o, dest->path, NULL,
+ rename_branch == o->branch1 ? dest : NULL,
+ rename_branch == o->branch1 ? NULL : dest);
+ }
+
+ /* Update dest->path both in index and in worktree */
if (update_file(o, 1, &dest->oid, dest->mode, dest->path))
return -1;
return 0;
@@ -1147,7 +1166,8 @@ static int handle_change_delete(struct merge_options *o,
const char *update_path = path;
int ret = 0;
- if (dir_in_way(path, !o->call_depth, 0)) {
+ if (dir_in_way(path, !o->call_depth, 0) ||
+ (!o->call_depth && would_lose_untracked(path))) {
update_path = alt_path = unique_path(o, path, change_branch);
}
@@ -1273,6 +1293,10 @@ static int handle_file(struct merge_options *o,
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)))
@@ -1398,7 +1422,18 @@ static int conflict_rename_rename_2to1(struct merge_options *o,
char *new_path2 = unique_path(o, path, ci->branch2);
output(o, 1, _("Renaming %s to %s and %s to %s instead"),
a->path, new_path1, b->path, new_path2);
- remove_file(o, 0, path, 0);
+ if (would_lose_untracked(path))
+ /*
+ * Only way we get here is if both renames were from
+ * a directory rename AND user had an untracked file
+ * at the location where both files end up after the
+ * two directory renames. See testcase 10d of t6043.
+ */
+ output(o, 1, _("Refusing to lose untracked file at "
+ "%s, even though it's in the way."),
+ path);
+ else
+ remove_file(o, 0, path, 0);
ret = update_file(o, 0, &mfi_c1.oid, mfi_c1.mode, new_path1);
if (!ret)
ret = update_file(o, 0, &mfi_c2.oid, mfi_c2.mode,
diff --git a/t/t6043-merge-rename-directories.sh b/t/t6043-merge-rename-directories.sh
index e737bad2c5..6db764a1b6 100755
--- a/t/t6043-merge-rename-directories.sh
+++ b/t/t6043-merge-rename-directories.sh
@@ -2660,7 +2660,7 @@ test_expect_success '10b-setup: Overwrite untracked with dir rename + delete' '
git commit -m "C"
'
-test_expect_failure '10b-check: Overwrite untracked with dir rename + delete' '
+test_expect_success '10b-check: Overwrite untracked with dir rename + delete' '
git checkout B^0 &&
echo very >y/c &&
echo important >y/d &&
@@ -2727,7 +2727,7 @@ test_expect_success '10c-setup: Overwrite untracked with dir rename/rename(1to2)
git commit -m "C"
'
-test_expect_failure '10c-check: Overwrite untracked with dir rename/rename(1to2)' '
+test_expect_success '10c-check: Overwrite untracked with dir rename/rename(1to2)' '
git checkout B^0 &&
echo important >y/c &&
@@ -2793,7 +2793,7 @@ test_expect_success '10d-setup: Delete untracked with dir rename/rename(2to1)' '
git commit -m "C"
'
-test_expect_failure '10d-check: Delete untracked with dir rename/rename(2to1)' '
+test_expect_success '10d-check: Delete untracked with dir rename/rename(2to1)' '
git checkout B^0 &&
echo important >y/wham &&
--
2.15.0.5.g9567be9905
Elijah Newren <newren@gmail.com>