Run commit message editor in the repo root (like hooks).
This makes the hgeditor script work with hg commit -R path/to/repo
<item>
<title>#desc|strip|firstline|strip|escape#</title>
<link>#url#?cs=#node|short#</link>
<description><![CDATA[#desc|strip|escape|addbreaks#]]></description>
<author>#author|obfuscate#</author>
<pubDate>#date|rfc822date#</pubDate>
</item>