Function strict_posix2

src/uniq.c:234–239

}

static bool
strict_posix2 (void)
{
  int posix_ver = posix2_version ();
  return 200112 <= posix_ver && posix_ver < 200809;
}

/* Convert OPT to idx_t, reporting an error using MSGID if OPT is
   invalid.  Silently convert too-large values to IDX_MAX.  */