__fxprintf (NULL, "%s", L"%s", buf);
arg_bool (const char *fname, int line_num, const char *args, unsigned flag){  if (__strncasecmp (args, "on", 2) == 0)    {      args += 2;      _res_hconf.flags |= flag;    }  else if (__strncasecmp (args, "off", 3) == 0)    {      args += 3;      _res_hconf.flags &= ~flag;    }  else    {      char *buf;      if (__asprintf (&buf,		      _("%s: line %d: expected `on' or `off', found `%s'\n"),		      fname, line_num, args) < 0)	return 0;#ifdef USE_IN_LIBIO      if (_IO_fwide (stderr, 0) > 0)	__fwprintf (stderr, L"%s", buf);      else#endif	fputs (buf, stderr);      free (buf);      return 0;    }  return args;}