What's the 'right' way to construct path with wgbwiki.py

As you know I'm writing a plugin that works with wgbwiki.py.

I have the following values for a sample file when I set the renderer
to "debug" :-

    PATH_INFO -> /wiki/holidays/france2005/part1
    wikidir -> /home/chris/webdev/info
    pi_bl -> wiki/holidays/france2005/part1


Now the path to the file I'm trying to display is actually:-

    /home/chris/webdev/info/holidays/france2005/part1.rst


I.e. I need to remove the "wiki" from the front of pi_bl before
appending it to wikidir to get the full path of the file.  Should I
simply the removing the "wiki" (which is the TRIGGER value in
wgbwiki.py) or is there a more elegant/straightforward way of doing
this?

-- 
Chris Green

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