mailinfo: avoid violating strbuf assertion

diff --git a/builtin-diff-index.c b/builtin-diff-index.c
index 556c506bfa7b5c5ef739d4203c585412a2764073..17d851b29ee5de33e01745eabcd5cd735c30b352 100644 (file)
--- a/builtin-diff-index.c
+++ b/builtin-diff-index.c
@@ -5,7 +5,7 @@
 #include "builtin.h"
 
 static const char diff_cache_usage[] =
-"git-diff-index [-m] [--cached] "
+"git diff-index [-m] [--cached] "
 "[<common diff options>] <tree-ish> [<path>...]"
 COMMON_DIFF_OPTIONS_HELP;
 
@@ -17,7 +17,7 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix)
        int result;
 
        init_revisions(&rev, prefix);
-       git_config(git_default_config); /* no "diff" UI options */
+       git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
        rev.abbrev = 0;
 
        argc = setup_revisions(argc, argv, &rev, NULL);
@@ -44,7 +44,5 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix)
                return -1;
        }
        result = run_diff_index(&rev, cached);
-       if (DIFF_OPT_TST(&rev.diffopt, EXIT_WITH_STATUS))
-               return DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES) != 0;
-       return result;
+       return diff_result_code(&rev.diffopt, result);
 }