I'm attaching a change I made to egg-post-commit (which, it should be
said, I have not tested). Basically, instead of including all the
verbose HTML for each egg in the Eggs Unlimited page in the wiki, it
just includes "<chickenegg .../>" tags. These tags are expanded to
the actual HTML code by the wiki itself (by an extension I made for
Svnwiki).
The reason to do this is that it makes the information in the wiki
more rich semantically. A practical consequence is that, since the
Svnwiki extension has more information about the wiki than
egg-post-commit, it can do more things. For example, it can replace
the link to "http://www.call-with-current-continuation.org/eggs/"; with
a link to the wiki if a page for the egg exists in the wiki
(regardless of "doc-from-wiki" from the meta file).
You can test what "<chickenegg .../>" does by going to the edit form
for any wiki file, entering code such as
<chickenegg name="stream-ext" description="some extension foobar yes" license="gpl"
author="Alejandro Forero Cuervo"/>
and hitting Preview.