push.default doc: explain simple after upstream

diff --git a/object.c b/object.c
index d8d09f92aacd114e23378af2cfbeb78a3dd785a0..0498b18d451b2335d21e2db3edc0ce7838aaa50e 100644 (file)
--- a/object.c
+++ b/object.c
@@ -191,10 +191,26 @@ struct object *parse_object(const unsigned char *sha1)
        enum object_type type;
        int eaten;
        const unsigned char *repl = lookup_replace_object(sha1);
-       void *buffer = read_sha1_file(sha1, &type, &size);
+       void *buffer;
+       struct object *obj;
+
+       obj = lookup_object(sha1);
+       if (obj && obj->parsed)
+               return obj;
+
+       if ((obj && obj->type == OBJ_BLOB) ||
+           (!obj && has_sha1_file(sha1) &&
+            sha1_object_info(sha1, NULL) == OBJ_BLOB)) {
+               if (check_sha1_signature(repl, NULL, 0, NULL) < 0) {
+                       error("sha1 mismatch %s\n", sha1_to_hex(repl));
+                       return NULL;
+               }
+               parse_blob_buffer(lookup_blob(sha1), NULL, 0);
+               return lookup_object(sha1);
+       }
 
+       buffer = read_sha1_file(sha1, &type, &size);
        if (buffer) {
-               struct object *obj;
                if (check_sha1_signature(repl, buffer, size, typename(type)) < 0) {
                        free(buffer);
                        error("sha1 mismatch %s\n", sha1_to_hex(repl));