--- main.c.orig	Wed Sep 29 19:46:54 2004
+++ main.c	Wed Sep 29 19:47:15 2004
@@ -102,6 +102,8 @@
 		case 'v':	/* -v a=1 to be done NOW.  one -v for each */
 			if (argv[1][2] == '\0' && --argc > 1 && isclvar((++argv)[1]))
 				setclvar(argv[1]);
+			else
+				FATAL("invalid -v option");
 			break;
 		case 'm':	/* more memory: -mr=record, -mf=fields */
 				/* no longer supported */