Function main

src/join.c:1028–1229

}

int
main (int argc, char **argv)
{
  int optc_status;
  int prev_optc_status = MUST_BE_OPERAND;
  int operand_status[2];
  int joption_count[2] = { 0, 0 };
  FILE *fp1, *fp2;
  int optc;
  int nfiles = 0;

  initialize_main (&argc, &argv);
  set_program_name (argv[0]);
  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEDIR);
  textdomain (PACKAGE);
  hard_LC_COLLATE = hard_locale (LC_COLLATE);

  atexit (close_stdout);
  atexit (free_spareline);

  while ((optc = getopt_long (argc, argv, "-a:e:i1:2:j:o:t:v:z",
                              longopts, NULL))
         != -1)
    {
      optc_status = MUST_BE_OPERAND;

      switch (optc)
        {
        case 'v':
            print_pairables = false;
            FALLTHROUGH;

        case 'a':
          {
            long int val;
            if (xstrtol (optarg, NULL, 10, &val, "") != LONGINT_OK
                || (val != 1 && val != 2))
              error (EXIT_FAILURE, 0,
                     _("invalid file number: %s"), quote (optarg));
            if (val == 1)
              print_unpairables_1 = true;
            else
              print_unpairables_2 = true;
          }
          break;

        case 'e':
          if (empty_filler && ! streq (empty_filler, optarg))
            error (EXIT_FAILURE, 0,
                   _("conflicting empty-field replacement strings"));
          empty_filler = optarg;
          break;

        case 'i':
          ignore_case = true;
          break;