ref: 3ceedfd1e1cdb643d8a0bbbbdd58badc5cc3fae8
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>