dokuwiki not in root problem of regexp

[Jiff]

Hi forumers,

I'm trying to set a configuration up for DW but I'm going mad with the
regexps:(

My starter is the conf file found on the nginx wiki, but modified not to
point DW to the server root:
server {
   server_name wiki.domain.tld;
###   root /var/www/dokuwiki;
   root /var/www;
 
   location /dokuwiki {
      index doku.php;
      try_files $uri $uri/ @dokuwiki;
   }
bla bla bla

And here I'm stuck.
Original dirs exclusion: 
   location ~ /(data|conf|bin|inc)/ {
      deny all;
   }

Of course, this won't work w/ my changes, and I'm totally unable to find
the right syntax to exclude these dirs from this conf (made many
unsuccessful tests:(

In my mind it _should_ be: "location ~/dokuwiki/(data|conf|bin|inc)/"
but it don't work, sniff.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,228124,228124#msg-228124