FreeLists / dokuwiki / [dokuwiki] dokuwiki htaccess rules in conflict with other domain rewrites?

[Ryan Jacobs <ryan.jake@xxxxxxxxx>]

Hello!

I really hope this is an appropriate place to ask this question, as I 
think it might be more apache rewrite-specific that dokuwiki-specific, 
but I'm just not sure, and am hoping someone out there may shed some 
light on things. I've scoured Google, but have only found a couple cases 
of similar problems, but no actual solutions...
Basically I have a dokuwiki install rooted in a subdirectory of my 
domain (http://mydomain.com/dokuwiki), all of which is hosted on a 
shared commercial host (not my own server). I have URL rewriting setup 
using an .htaccess file in my /dokuwiki folder and the standard rewrite 
rules for a dokuwiki install (found at 
http://wiki.splitbrain.org/wiki:rewrite and using "RewriteBase /dokuwiki").
My problem arises when I try to setup some other domain-wide rewrite 
rules in another .htaccess file at the root of the domain 
(http://mydomain.com/). These new rules function for any directory in my 
domain EXCEPT my dokuwiki installation at /dokuwiki. For example I use 
the following in the domain root .htaccess to remove the www from all 
domain requests:
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} !^mydomain.com$ [NC]
RewriteRule ^(.*)$ http://mydomain.com/$1 [L,R=301]

A request to http://www.mydoman.com/somefolder/ redirects to 
http://mydoman.com/somefolder/, but http://www.mydoman.com/dokuwiki/ 
DOES NOT redirect. However if I turn off Dokuwiki rewriting and remove 
my /dokuwiki/.htaccess file, then http://www.mydoman.com/dokuwiki/ DOES 
redirect to the non-www version.
I read that apache has to do some tricky things to manage paths when 
processing per-directory .htaccess rules (hence the RewriteBase), so 
maybe there is some conflict here? Or perhaps there is something in the 
default Dokuwiki .htaccess rules that somehow conflicts with .htaccess 
rules higher up in the tree (though I didn't think that was possible)?
Sorry again if this is very apache specific, but I have to start 
somewhere, and am perhaps a bit over my head at the moment.
Thanks and cheers,
Ryan

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