Function trim

static/editor.md/editormd.js:3359–3361

(str)

     */
    
    var trim = function(str) {
        return (!String.prototype.trim) ? str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, "") : str.trim();
    };
    
    editormd.trim = trim;