{
result = eval;
}
else // There was a previous match, since there is only exactly one allowed, bail out.
else // There was a previous match. Only one non-blank result is allowed. #NUM! on multiple values.
result = ErrorEval.NUM_ERROR;
if(result instanceof BlankEval) {
return false;
else {
// We have a previous filled result.
if(!(eval instanceof BlankEval)) {
return true;