Redmine

In block characters < and > are replaced with HTML entities. Example:

<pre><code class="html">
<embed src="/upload/banners/{$page_razdel}/{$key}.swf" width="498" height="70" 
  type="application/x-shockwave-flash" 
  pluginspage="http://www.macromedia.com/go/getflashplayer"></embed>
</code></pre> 

<pre><code class="xml">
    <web>
        <host value="http://${admin_host::domain}/business/admin/" />
        <static_host value="${admin_host::web::host}static/" />
        <img_dir value="${admin_host::web::static_host}images/" />
        <css_dir value="${admin_host::web::static_host}css/" />
        <js_dir value="${admin_host::web::static_host}js/" />
        <upload_dir value="${admin_host::web::host}upload/" />
    </web>
</code></pre>

<pre><code class="php"><?php
$go_page = "onClick=\"return dropdownmenu(this, event, UserMenu('".htmlspecialchars($go_page)."', '".$row['user_id']."', '".$member_id['user_group']."'), '170px')\" onMouseout=\"delayhidemenu()\"";

if ($config['allow_alt_url'] == "yes") {
    $tpl->set('{author}', "<a {$go_page} href=\"".$config['http_home_url']."user/".urlencode($row['name'])."/\">".$row['name']."</a>");
} else {
    $tpl->set('{author}', "<a {$go_page} href=\"$PHP_SELF?sa=userinfo&amp;user=".urlencode($row['name'])."\">".$row['name']."</a>");
}

?></code></pre>