Inconsistency of root_datadir

I have now discovered why I was having trouble with the value of
data["root_datadir"], it's inconsistent depending on whether the URL
you give to pyblosxom points at a file or not.

If you give pyblosxom a URL which points at a file which pyblosxom
knows how to process, e.g.

    http://home.isbd.net/cgi-bin/pyblosxom.cgi/wiki/tools/solderStations

then data["root_datadir"] is tools/solderStations.rst (I use the
.rst renderer).

However if you give pyblosxom a URL which points at a directory,
e.g.:-

    http://home.isbd.net/cgi-bin/pyblosxom.cgi/wiki/tools/

the data["root_datadir"] is /var/www/htdocs/pb/data.


This doesn't seem very consistent to say the least.  I was trying to
use data["root_datadir"] in a plugin in cb_prepare to find the name
of the file/directory currently being accessed.  It works as I want
for files but fails completely for directories.

Should I be using something different?  All I want basically is the
last part of the URL given to pyblosxom, i.e.
"wiki/tools/solderStations.rst" or "wiki/tools/".


(This is all of course using the wgbwiki.py plugin if that's at all
relevant)

-- 
Chris Green

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