416   int argn;  in main()  local
434   for (argn = 1; argn < argc; argn++) {  in main()
435     arg = argv[argn];  in main()
442       if (++argn >= argc) usage();  in main()
443       if ((comment_file = fopen(argv[argn], "r")) == NULL) {  in main()
444 	fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);  in main()
448       if (++argn >= argc) usage();  in main()
449       comment_arg = argv[argn];  in main()
457 	if (strlen(argv[argn]+1) >= (size_t) MAX_COM_LENGTH) {  in main()
462 	strcpy(comment_arg, argv[argn]+1);  in main()
469 	  if (++argn >= argc)  in main()
471 	  if (strlen(comment_arg) + 1 + strlen(argv[argn]) >=  in main()
478 	  strcat(comment_arg, argv[argn]);  in main()
496   if (comment_arg == NULL && comment_file == NULL && argn >= argc)  in main()
500   if (argn < argc) {  in main()
501     if ((infile = fopen(argv[argn], READ_BINARY)) == NULL) {  in main()
502       fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);  in main()
523   if (argn != argc-2) {  in main()
528   if ((outfile = fopen(argv[argn+1], WRITE_BINARY)) == NULL) {  in main()
529     fprintf(stderr, "%s: can't open %s\n", progname, argv[argn+1]);  in main()
534   if (argn < argc-1) {  in main()