Plan 9 from Bell Labs’s /usr/web/sources/contrib/jas/root/sys/src/cmd/hg/mercurial/templates/rss/bookmarkentry.tmpl
<item> <title>{bookmark|escape}</title> <link>{urlbase}{url|urlescape}rev/{node|short}</link> <description><![CDATA[{bookmark|strip|escape|addbreaks}]]></description> <pubDate>{date|rfc822date}</pubDate> </item>