rem: exit_status = 1;
add: set_exit_status (false);
context: xstrcoll (char const *a, char const *b){  int diff;  errno = 0;  diff = strcoll (a, b);  if (errno)    {      error (0, errno, _("cannot compare file names %s and %s"),	     quote_n (0, a), quote_n (1, b));      exit_status = 1;      longjmp (failed_strcoll, 1);    }  return diff;}