Neos\Eel\FlowQuery\FizzleParser::match_UnquotedOperand PHP Method

    function match_UnquotedOperand($stack = array())
    {
        $matchrule = "UnquotedOperand";
        $result = $this->construct($matchrule, $matchrule, null);
        if (($subres = $this->rx('/ [^"\'\\[\\]\\s]+ /')) !== FALSE) {
            $result["text"] .= $subres;
            return $this->finalise($result);
        } else {
            return FALSE;
        }
    }