document optional class

diff --git a/lib/isccfg/namedconf.c b/lib/isccfg/namedconf.c
index 8b446878c5b1a59f36530a52521cbdc18da608e4..d402327c269b7d6f328a1439bd003f3916a6b235 100644 (file)
--- a/lib/isccfg/namedconf.c
+++ b/lib/isccfg/namedconf.c
@@ -2548,8 +2548,14 @@ parse_optional_class(cfg_parser_t *pctx, const cfg_type_t *type,
        return (result);
 }
 
+static void
+doc_optional_class(cfg_printer_t *pctx, const cfg_type_t *type) {
+       UNUSED(type);
+       cfg_print_cstr(pctx, "[ <class> ]");
+}
+
 static cfg_type_t cfg_type_optional_class = {
-       "optional_class", parse_optional_class, NULL, cfg_doc_terminal,
+       "optional_class", parse_optional_class, NULL, doc_optional_class,
        NULL, NULL
 };