Use string.contains() instead of regex

    function selectCurrentWord(){

        if (selectionStart !== selectionEnd) return false;

        const delimiters = ".,\/#!$%\^&\*;:{}=\-_`~()";

        // Select the current word, find the start and end of the word (first space before and after)

        const wordStart = text.substring(0, selectionStart).lastIndexOf(" ") + 1;

        selectionStart = wordStart;

        // Remove all punctuation at the end and beginning of the word

        while (text[selectionStart].match(/[.,\/#!$%\^&\*;:{}=\-_`~()]/)) {

        while (delimiters.includes(text[selectionStart])) {

            selectionStart++;

        }

        while (text[selectionEnd - 1].match(/[.,\/#!$%\^&\*;:{}=\-_`~()]/)) {

        while (delimiters.includes(text[selectionEnd - 1])) {

            selectionEnd--;

        }

        target.setSelectionRange(selectionStart, selectionEnd);