This plugin does exactly what it says: when you log into your Joomla account, it creates a cookie for Dokuwiki so you are automatically logged in to both packages. There is only one parameter: the path to your Dokuwiki directory path. Unfortunately I had a problem setting this parameter. The default value is a relative path but I had to use an absolution path from my web server root. It took a while to figure this out but afterwards, the plugin has worked perfectly.

The documentation is very skimpy and didn't help me to understand what to try for the parameter setting. A brief email exchange with the author was very prompt but not helpful, so I downgraded one star in this review. I'd give it 4.75 stars if I could. The plugin itself is a little gem.