Teach git log --check to return an appropriate exit code

Signed-off-by: Peter Valdemar Mørch <peter@morch.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-log.c b/builtin-log.c
index f4975cf35f7f1555739f7657ee62ed983d18cb84..ae71540546ff53ae3abae12c9702d0a88d769333 100644 (file)
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -217,6 +217,11 @@ static int cmd_log_walk(struct rev_info *rev)
        if (rev->early_output)
                finish_early_output(rev);
 
+       /*
+        * For --check, the exit code is based on CHECK_FAILED being
+        * accumulated in rev->diffopt, so be careful to retain that state
+        * information if replacing rev->diffopt in this loop
+        */
        while ((commit = get_revision(rev)) != NULL) {
                log_tree_commit(rev, commit);
                if (!rev->reflog_info) {
@@ -227,6 +232,10 @@ static int cmd_log_walk(struct rev_info *rev)
                free_commit_list(commit->parents);
                commit->parents = NULL;
        }
+       if (rev->diffopt.output_format & DIFF_FORMAT_CHECKDIFF &&
+           DIFF_OPT_TST(&rev->diffopt, CHECK_FAILED)) {
+               return 02;
+       }
        return 0;
 }