t6044: add more testcases with staged changes before a merge is invoked

diff --git a/merge-recursive.c b/merge-recursive.c
index 869092f7b9bc0ce1104a1c43c7201acdee2eb4f8..171587bc7aab23bd7576ca7a5c2ad7d5ef42a942 100644 (file)
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1983,10 +1983,10 @@ int merge_trees(struct merge_options *o,
        if (oid_eq(&common->object.oid, &merge->object.oid)) {
                struct strbuf sb = STRBUF_INIT;
 
-               if (!o->call_depth && index_has_changes(&sb)) {
-                       err(o, _("Dirty index: cannot merge (dirty: %s)"),
+               if (!o->call_depth && index_has_changes(&the_index, head, &sb)) {
+                       err(o, _("Your local changes to the following files would be overwritten by merge:\n  %s"),
                            sb.buf);
-                       return 0;
+                       return -1;
                }
                output(o, 0, _("Already up to date!"));
                *result = head;