408   int argn;  in main()  local
426   for (argn = 1; argn < argc; argn++) {  in main()
427     arg = argv[argn];  in main()
434       if (++argn >= argc) usage();  in main()
435       if ((comment_file = fopen(argv[argn], "r")) == NULL) {  in main()
436         fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);  in main()
440       if (++argn >= argc) usage();  in main()
441       comment_arg = argv[argn];  in main()
449         if (strlen(argv[argn]) + 2 >= (size_t) MAX_COM_LENGTH) {  in main()
454         strcpy(comment_arg, argv[argn]+1);  in main()
461           if (++argn >= argc)  in main()
463           if (strlen(comment_arg) + strlen(argv[argn]) + 2 >=  in main()
470           strcat(comment_arg, argv[argn]);  in main()
472       } else if (strlen(argv[argn]) >= (size_t) MAX_COM_LENGTH) {  in main()
488   if (comment_arg == NULL && comment_file == NULL && argn >= argc)  in main()
492   if (argn < argc) {  in main()
493     if ((infile = fopen(argv[argn], READ_BINARY)) == NULL) {  in main()
494       fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);  in main()
515   if (argn != argc-2) {  in main()
520   if ((outfile = fopen(argv[argn+1], WRITE_BINARY)) == NULL) {  in main()
521     fprintf(stderr, "%s: can't open %s\n", progname, argv[argn+1]);  in main()
526   if (argn < argc-1) {  in main()