return escapeHtml(markdown);
        }
        return markdownRenderer.render(markdown);
    }

    /**
     * Escapes HTML special characters.
     *
     * @param text the text to escape
     * @return the escaped text
     */
    protected String escapeHtml(final String text) {
        if (text == null) {
            return "";

            if (!ComponentUtil.getFessConfig().isHtmlMimetypeForCache(mimetype)) {
                cache = StringEscapeUtils.escapeHtml4(cache);
            }
            cache = ComponentUtil.getPathMappingHelper().replaceUrls(cache);
            if (queries != null && queries.length > 0) {