33 int opterr = 1, optind = 1, optopt = 0;  variable
43 	optind = 1;  in getopt_reset()
56 		if (optind >= argc || argv[optind][0] != '-' ||  in getopt()
57 		    argv[optind] == NULL || argv[optind][1] == '\0')  in getopt()
59 		else if (strcmp(argv[optind], "--") == NULL) {  in getopt()
60 			optind++;  in getopt()
64 	optopt = c = (unsigned char)argv[optind][_sp];  in getopt()
68 		if (argv[optind][++_sp] == '\0') {  in getopt()
69 			optind++;  in getopt()
76 		if (argv[optind][_sp+1] != '\0')  in getopt()
77 			optarg = &argv[optind++][_sp+1];  in getopt()
78 		else if (++optind >= argc) {  in getopt()
87 			optarg = argv[optind++];  in getopt()
90 		if (argv[optind][++_sp] == '\0') {  in getopt()
92 			optind++;  in getopt()