Copied from http://bugs.musicbrainz.org/ticket/5204

I'm running MediaWiki 1.15.1, here are my wiki's relevant config bits:

• My wiki is installed within /wiki
• My api is accessible as http://wiki.xabbu.net/wiki/api.php
• My index.php is located at http://wiki.xabbu.net/wiki/index.php
• My wiki works with URLs like http://wiki.xabbu.net/MusicBrainz_Documentation

/.htaccess (not located at /wiki/.htaccess):
RewriteRule ^[^:]*\. - [L]
RewriteRule ^/*$ /wiki/index.php?title=MusicBrainz_Documentation [L,QSA]
RewriteRule ^(.+)$ /wiki/index.php?title=$1 [L,QSA]

/wiki/LocalSettings.php:
$wgScriptPath = "/wiki";
$wgArticlePath = "/$1";

Query to test the api: api.php?action=query&titles=About_MusicBrainz&prop=info&format=xmlfm