Fragment links with no markers are badly converted to wiki syntax

If you convert this XHTML:

<p><a href="http://www.xwiki.org/path#foo">test</a></p>

to XWiki 2.0 syntax, you get:

[[test>>http://www.xwiki.org/path#foo]]

which is the expected result. But if you convert:

<p><a href="#foo">test</a></p>

you get:

[[test>>\#foo]]

As you can see the fragment identifier is escaped. This breaks the links. Note that in both previous examples the link markers are missing. If I add the link markers to the second example it works:

<p>
  <!--startwikilink:false|-|url|-|#bar-->
  <span class="wikiexternallink">
    <a href="#bar">test</a>
  </span>
  <!--stopwikilink-->
</p>

The use case for the missing markers is when you import an office document that has internal links (e.g. a table of contents).