Function escape

js/marked.js:945–952

* Helpers

(html, encode)

     */

    function escape(html, encode) {
        return html
            .replace(!encode ? /&(?!#?\w+;)/g : /&/g, "&")
            .replace(/</g, "&lt;")
            .replace(/>/g, "&gt;")
            .replace(/"/g, "&quot;")
            .replace(/'/g, "&#39;");
    }

    function replace(regex, opt) {
        regex = regex.source;