rev-list --children

Just like --parents option shows the parents of commits, this shows the
children of commits.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/builtin-rev-list.c b/builtin-rev-list.c
index edc0bd35bb..9da2f76375 100644
--- a/builtin-rev-list.c
+++ b/builtin-rev-list.c
@@ -36,6 +36,7 @@ static const char rev_list_usage[] =
 "    --reverse\n"
 "  formatting output:\n"
 "    --parents\n"
+"    --children\n"
 "    --objects | --objects-edge\n"
 "    --unpacked\n"
 "    --header | --pretty\n"
@@ -84,6 +85,15 @@ static void show_commit(struct commit *commit)
 			parents = parents->next;
 		}
 	}
+	if (revs.children.name) {
+		struct commit_list *children;
+
+		children = lookup_decoration(&revs.children, &commit->object);
+		while (children) {
+			printf(" %s", sha1_to_hex(children->item->object.sha1));
+			children = children->next;
+		}
+	}
 	show_decorations(commit);
 	if (revs.commit_format == CMIT_FMT_ONELINE)
 		putchar(' ');