This patch, put together by Manuel Novoa III, is a merge of work
done by Evin Robertson (bug#1105) and work from Manuel to make
usage messages occupy less space and simplify how usage messages
are displayed.
diff --git a/coreutils/id.c b/coreutils/id.c
index 650e3db..3667b32 100644
--- a/coreutils/id.c
+++ b/coreutils/id.c
@@ -53,11 +53,11 @@
 				name_not_number++;
 				break;
 			default:
-				usage(id_usage);
+				show_usage();
 		}
 	}
 
-	if (no_user && no_group) usage(id_usage);
+	if (no_user && no_group) show_usage();
 
 	if (argv[optind] == NULL) {
 		if (print_real) {