Consider the following xdoc file:
<?xml version="1.0" encoding="UTF-8"?>
<document>
<properties>
<title>test1</title>
</properties>
<body>
<section name="section name">
<macro id="news" count="3" />
</section>
</body>
</document>
The 'news' macro is the Doxia macro described on http://velocity.apache.org/site/tools/velocity-site-news-extension/index.html
This results in the following content:
<a name="section name"></a><div class="section"><h2>section name</h2>
[... Macro output omitted ...]</macro>
</div>
Please note the additional </macro> that somehow got into the output. This is obviously no valid XHTML.
This is the fairly trivial (and obvious) patch. Please apply before releasing the next version of the doxia-core.