compile(token, stack, output) {
                let {value} = token;
                delete token.match;

                // Remove the quotes from the string
                if (value.slice(0, 1) === '"') {
                    value = value.replace('\\"', '"');
                } else {
                    value = value.replace('\\\'', '\'');
                }

                token.value = value.slice(1, -1).replace(/\\n/g, '\n').replace(/\\r/g, '\r');
                Twig.log.trace('Twig.expression.compile: ', 'String value: ', token.value);
                output.push(token);
            }
Match a string. This is anything between a pair of single or double quotes.