unpack-trees: allow Porcelain to give different error messages

diff --git a/merge-tree.c b/merge-tree.c
index a3511b76ca5f619024ac5fedd17e66ef75f717ab..02fc10f7e622ba1c53065e7cf4563ff10af0c41f 100644 (file)
--- a/merge-tree.c
+++ b/merge-tree.c
@@ -287,31 +287,32 @@ static void unresolved(const struct traverse_info *info, struct name_entry n[3])
  * The successful merge rules are the same as for the three-way merge
  * in git-read-tree.
  */
-static void threeway_callback(int n, unsigned long mask, struct name_entry *entry, struct traverse_info *info)
+static int threeway_callback(int n, unsigned long mask, unsigned long dirmask, struct name_entry *entry, struct traverse_info *info)
 {
        /* Same in both? */
        if (same_entry(entry+1, entry+2)) {
                if (entry[0].sha1) {
                        resolve(info, NULL, entry+1);
-                       return;
+                       return mask;
                }
        }
 
        if (same_entry(entry+0, entry+1)) {
                if (entry[2].sha1 && !S_ISDIR(entry[2].mode)) {
                        resolve(info, entry+1, entry+2);
-                       return;
+                       return mask;
                }
        }
 
        if (same_entry(entry+0, entry+2)) {
                if (entry[1].sha1 && !S_ISDIR(entry[1].mode)) {
                        resolve(info, NULL, entry+1);
-                       return;
+                       return mask;
                }
        }
 
        unresolved(info, entry);
+       return mask;
 }
 
 static void merge_trees(struct tree_desc t[3], const char *base)