format-patch: add --interdiff option to embed diff in cover letter

diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
index 31d2cb410738d335d9f6431d6901ea1c0f8b67ff..473615117e0adbb301e6ddc0ab000accc513a9ee 100644 (file)
--- a/builtin/diff-tree.c
+++ b/builtin/diff-tree.c
@@ -76,7 +76,7 @@ static int diff_tree_stdin(char *line)
        if (obj->type == OBJ_TREE)
                return stdin_diff_trees((struct tree *)obj, p);
        error("Object %s is a %s, not a commit or tree",
-             oid_to_hex(&oid), typename(obj->type));
+             oid_to_hex(&oid), type_name(obj->type));
        return -1;
 }
 
@@ -110,7 +110,8 @@ int cmd_diff_tree(int argc, const char **argv, const char *prefix)
 
        git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
        init_revisions(opt, prefix);
-       gitmodules_config();
+       if (read_cache() < 0)
+               die(_("index file corrupt"));
        opt->abbrev = 0;
        opt->diff = 1;
        opt->disable_stdin = 1;