+ case 'x':
+ fixup_prefix(optarg);
+ conf.cgi_prefix = optarg;
+ break;
+
+ case 'i':
+ port = strchr(optarg, '=');
+ if (optarg[0] != '.' || !port) {
+ fprintf(stderr, "Error: Invalid interpreter: %s\n",
+ optarg);
+ exit(1);
+ }
+
+ *port++ = 0;
+ uh_interpreter_add(optarg, port);
+ break;
+