return target;
}
+#if 0 // #if-0-ing avoids unused function warning; will make live in next commit
+static int handle_file_collision(struct merge_options *o,
+ const char *collide_path,
+ const char *prev_path1,
+ const char *prev_path2,
+ const char *branch1, const char *branch2,
+ const struct object_id *a_oid,
+ unsigned int a_mode,
+ const struct object_id *b_oid,
+ unsigned int b_mode)
+{
+ struct merge_file_info mfi;
+ struct diff_filespec null, a, b;
+ char *alt_path = NULL;
+ const char *update_path = collide_path;
+
+ /*
+ * In the recursive case, we just opt to undo renames
+ */
+ if (o->call_depth && (prev_path1 || prev_path2)) {
+ /* Put first file (a_oid, a_mode) in its original spot */
+ if (prev_path1) {
+ if (update_file(o, 1, a_oid, a_mode, prev_path1))
+ return -1;
+ } else {
+ if (update_file(o, 1, a_oid, a_mode, collide_path))
+ return -1;
+ }
+
+ /* Put second file (b_oid, b_mode) in its original spot */
+ if (prev_path2) {
+ if (update_file(o, 1, b_oid, b_mode, prev_path2))
+ return -1;
+ } else {
+ if (update_file(o, 1, b_oid, b_mode, collide_path))
+ return -1;
+ }
+
+ /* Don't leave something at collision path if unrenaming both */
+ if (prev_path1 && prev_path2)
+ remove_file(o, 1, collide_path, 0);
+
+ return 0;
+ }
+
+ /* Remove rename sources if rename/add or rename/rename(2to1) */
+ if (prev_path1)
+ remove_file(o, 1, prev_path1,
+ o->call_depth || would_lose_untracked(prev_path1));
+ if (prev_path2)
+ remove_file(o, 1, prev_path2,
+ o->call_depth || would_lose_untracked(prev_path2));
+
+ /*
+ * Remove the collision path, if it wouldn't cause dirty contents
+ * or an untracked file to get lost. We'll either overwrite with
+ * merged contents, or just write out to differently named files.
+ */
+ if (was_dirty(o, collide_path)) {
+ output(o, 1, _("Refusing to lose dirty file at %s"),
+ collide_path);
+ update_path = alt_path = unique_path(o, collide_path, "merged");
+ } else if (would_lose_untracked(collide_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."),
+ collide_path);
+ update_path = alt_path = unique_path(o, collide_path, "merged");
+ } else {
+ /*
+ * FIXME: It's possible that the two files are identical
+ * and that the current working copy happens to match, in
+ * which case we are unnecessarily touching the working
+ * tree file. It's not a likely enough scenario that I
+ * want to code up the checks for it and a better fix is
+ * available if we restructure how unpack_trees() and
+ * merge-recursive interoperate anyway, so punting for
+ * now...
+ */
+ remove_file(o, 0, collide_path, 0);
+ }
+
+ /* Store things in diff_filespecs for functions that need it */
+ memset(&a, 0, sizeof(struct diff_filespec));
+ memset(&b, 0, sizeof(struct diff_filespec));
+ null.path = a.path = b.path = (char *)collide_path;
+ oidcpy(&null.oid, &null_oid);
+ null.mode = 0;
+ oidcpy(&a.oid, a_oid);
+ a.mode = a_mode;
+ a.oid_valid = 1;
+ oidcpy(&b.oid, b_oid);
+ b.mode = b_mode;
+ b.oid_valid = 1;
+
+ if (merge_mode_and_contents(o, &null, &a, &b, collide_path,
+ branch1, branch2, o->call_depth * 2, &mfi))
+ return -1;
+ mfi.clean &= !alt_path;
+ if (update_file(o, mfi.clean, &mfi.oid, mfi.mode, update_path))
+ return -1;
+ if (!mfi.clean && !o->call_depth &&
+ update_stages(o, collide_path, NULL, &a, &b))
+ return -1;
+ free(alt_path);
+ /*
+ * FIXME: If both a & b both started with conflicts (only possible
+ * if they came from a rename/rename(2to1)), but had IDENTICAL
+ * contents including those conflicts, then in the next line we claim
+ * it was clean. If someone cares about this case, we should have the
+ * caller notify us if we started with conflicts.
+ */
+ return mfi.clean;
+}
+#endif
+
static int handle_file(struct merge_options *o,
struct diff_filespec *rename,
int stage,