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.

nc.c

@@ -58,12 +58,12 @@ int nc_main(int argc, char **argv)
 				lport = atoi(optarg);
 				break;
 			default:
-				usage(nc_usage);
+				show_usage();
 		}
 	}
 
 	if ((do_listen && optind != argc) || (!do_listen && optind + 2 != argc))
-		usage(nc_usage);
+		show_usage();
 
 	if ((sfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
 		perror_msg_and_die("socket");