$0
<xf:js>
    $(document).ready(function()
    {
        FroalaEditor.COMMANDS.xfQuote.callback = function()
        {
            XF.EditorHelpers.wrapSelectionText(this, '[QUOTE]', '[/QUOTE]', true);
        }
        XF.QuoteClick = XF.extend(XF.QuoteClick, {
            handleAjax: function (data)
            {
                XF.insertIntoEditor(
                    XF.findRelativeIf(this.options.editor, this.$target),
                    $.trim(data.quote.replace(/\n/g,"<br>"))
                );
            }
        });
    });
</xf:js>