Get invalid option

[cattokomo]

Is there a way to get an invalid option, like an option that doesn't exist in array of cag_option?

while (cag_option_fetch(&context)) {
  ident = cag_option_get(&context);
  switch (ident) {
  case 'h':
    printf("%s\n", "Usage: program [-h]");
    exit(EXIT_SUCCESS);
    break;
  default:
    // here's where it handle invalid option; below is an example
    printf("Error: invalid option '%s'\n", cag_option_get_invalid(&context));
    exit(EXIT_FAILURE);
    break;
  }
}

[likle]

Hi @UrNightmaree ! ident will be set to '?' if an option is not known.

However, there is currently no API to get the letter/name of the invalid option. You could remember the index from the context before fetching, but that's not ideal. It would actually be fairly easy to implement that here for long names and here for access letters by storing the info in the context. But it's currently not there.

[cattokomo]

Does argv[context->index] will get the invalid option?