templates/tagentry-rss.tmpl

Emacs: use `default-directory' if `buffer-file-name' is null.
This patch allows you to co-operate with Mercurial in dired buffer.

<item>
    <title>#tag|escape#</title>
    <link>#url#?cs=#node|short#</link>
    <description><![CDATA[#tag|strip|escape|addbreaks#]]></description>
    <pubDate>#date|rfc822date#</pubDate>
</item>