log: add --show-linear-break to help see non-linear history

diff --git a/log-tree.c b/log-tree.c
index 08970bf46e49f6447ada24e81e5792ea9f92f419..17862f6cfbd5c1f5faca4c11110351432f30b2d6 100644 (file)
--- a/log-tree.c
+++ b/log-tree.c
@@ -805,12 +805,16 @@ int log_tree_commit(struct rev_info *opt, struct commit *commit)
        if (opt->line_level_traverse)
                return line_log_print(opt, commit);
 
+       if (opt->track_linear && !opt->linear && !opt->reverse_output_stage)
+               printf("\n%s\n", opt->break_bar);
        shown = log_tree_diff(opt, commit, &log);
        if (!shown && opt->loginfo && opt->always_show_header) {
                log.parent = NULL;
                show_log(opt);
                shown = 1;
        }
+       if (opt->track_linear && !opt->linear && opt->reverse_output_stage)
+               printf("\n%s\n", opt->break_bar);
        opt->loginfo = NULL;
        maybe_flush_or_die(stdout, "stdout");
        return shown;