Recently I setup and tuned CorePHP WordPress for Joomla component for one of my clients site.
One task I had to resolve was to show all posts of the selected author if visitor click on the author name. I used WordPress the_author_posts_link() function to get the URL to the author archive page.
It returned
www.yoursite.com?authour=nnn
URL instead of search engine friendly (SEF) permalink. In order to change that I use the way I was found at
codex.wordpress.org.
In order to setup the author permalink instead of ?authour=nnn I placed this code to the end of functions.php file at WordPress default used theme folder: