checkout: notice when the switched branch is behind or forked

diff --git a/builtin-read-tree.c b/builtin-read-tree.c
index c0ea0342b755c6749391803d19f852182c0c512e..1d9d125b91f976ebbc5ef0b1ca0fe7c0caeabb8a 100644 (file)
--- a/builtin-read-tree.c
+++ b/builtin-read-tree.c
@@ -45,8 +45,7 @@ static int read_cache_unmerged(void)
                                continue;
                        cache_tree_invalidate_path(active_cache_tree, ce->name);
                        last = ce;
-                       ce->ce_mode = 0;
-                       ce->ce_flags &= ~htons(CE_STAGEMASK);
+                       ce->ce_flags |= CE_REMOVE;
                }
                *dst++ = ce;
        }
@@ -269,7 +268,8 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
                parse_tree(tree);
                init_tree_desc(t+i, tree->buffer, tree->size);
        }
-       unpack_trees(nr_trees, t, &opts);
+       if (unpack_trees(nr_trees, t, &opts))
+               return 128;
 
        /*
         * When reading only one tree (either the most basic form,