ref: c789c054808dc3984abfb0d6b7de6d12e66471c2
dir: /sys/lib/python/mercurial/templates/rss/changelogentry.tmpl/
<item> <title>{desc|strip|firstline|strip|escape}</title> <guid isPermaLink="true">{urlbase}{url}rev/{node|short}</guid> <description><![CDATA[{desc|strip|escape|addbreaks|nonempty}]]></description> <author>{author|obfuscate}</author> <pubDate>{date|rfc822date}</pubDate> </item>