<item>
    <title>Ask PG: Link to comments in RSS</title>
    <link>http://news.ycombinator.com/item?id=112684</link>
    <comments>http://news.ycombinator.com/item?id=112684</comments>
    <description>
      &lt;a href="http://news.ycombinator.com/item?id=112684"&gt;comments&lt;/a&gt;
    </description>
  </item>

  <item>
    <title>Ask PG: Link to comments in RSS</title>
    <link>http://news.ycombinator.com/item?id=112684</link>  
    <description><![CDATA[<a href="http://news.ycombinator.com/item?id=112684">Comments</a>]]></description>
  </item>

  (def rss-stories (stories)
    (tag (rss version "2.0")
      (tag channel
        (tag title (pr this-site*))
        (tag link (pr site-url*))
        (tag description (pr site-desc*))
        (each s stories
          (tag item
            (let comurl (+ site-url* (item-url s))
              (tag title    (pr (eschtml (s 'title))))
              (tag link     (pr (if (blank (s 'url))
                                    comurl
                                    (eschtml (s 'url)))))
              (tag comments (pr comurl))
              (tag description
                (pr "<![CDATA[")
                (link "Comments" comurl)
                (pr "]]>"))))))))

Thanks!