unpack-trees: allow Porcelain to give different error messages

diff --git a/builtin-rev-list.c b/builtin-rev-list.c
index d0a14169211aa499c726a436de827ea4d328f6c2..edc0bd35bb0e96a230284250dc4c40776cf7caac 100644 (file)
--- a/builtin-rev-list.c
+++ b/builtin-rev-list.c
@@ -33,6 +33,7 @@ static const char rev_list_usage[] =
 "  ordering output:\n"
 "    --topo-order\n"
 "    --date-order\n"
+"    --reverse\n"
 "  formatting output:\n"
 "    --parents\n"
 "    --objects | --objects-edge\n"