ref: f5688dd6c9bfb6cee00f2c5e5f190d7a2ffaa6c6
dir: /sys/lib/python/mercurial/templates/rss/filelog.tmpl/
{header}
<title>{repo|escape}: {file|escape} history</title>
<description>{file|escape} revision history</description>
{entries%filelogentry}
</channel>
</rss>