receive-pack: allow deletion of corrupt refs

diff --git a/builtin-diff-tree.c b/builtin-diff-tree.c
index f8215ea7072af34072a73221273c1b9cdadd18d6..2e13716eec985e7274d6f44646c94d8224964b7c 100644 (file)
--- a/builtin-diff-tree.c
+++ b/builtin-diff-tree.c
@@ -59,7 +59,7 @@ static const char diff_tree_usage[] =
 "  --root        include the initial commit as diff against /dev/null\n"
 COMMON_DIFF_OPTIONS_HELP;
 
-int cmd_diff_tree(int argc, const char **argv, char **envp)
+int cmd_diff_tree(int argc, const char **argv, const char *prefix)
 {
        int nr_sha1;
        char line[1000];
@@ -67,7 +67,7 @@ int cmd_diff_tree(int argc, const char **argv, char **envp)
        static struct rev_info *opt = &log_tree_opt;
        int read_stdin = 0;
 
-       init_revisions(opt, setup_git_directory());
+       init_revisions(opt, prefix);
        git_config(git_default_config); /* no "diff" UI options */
        nr_sha1 = 0;
        opt->abbrev = 0;
@@ -118,7 +118,8 @@ int cmd_diff_tree(int argc, const char **argv, char **envp)
        }
 
        if (!read_stdin)
-               return 0;
+               return DIFF_OPT_TST(&opt->diffopt, EXIT_WITH_STATUS)
+                       && DIFF_OPT_TST(&opt->diffopt, HAS_CHANGES);
 
        if (opt->diffopt.detect_rename)
                opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
@@ -133,5 +134,6 @@ int cmd_diff_tree(int argc, const char **argv, char **envp)
                else
                        diff_tree_stdin(line);
        }
-       return 0;
+       return DIFF_OPT_TST(&opt->diffopt, EXIT_WITH_STATUS)
+               && DIFF_OPT_TST(&opt->diffopt, HAS_CHANGES);
 }