Wordpress: include language variable in url
A properly setup Wordpress 2.0+ will redirect all requests to /index.php so it won't need any htaccess updates, and your registered perma-struct looks fine. I think all that is left is configuring wordpress to use your %lang struct using a custom structure and you should be good to go
Try the following code
function custom_rewrite_rules(){ global $langs; //Array containing locale => pretty permalink key value pair /* $langs = array ( 'en_us' => 'en', ) */ foreach($langs as $locale => $lang) { add_rewrite_rule( '^'.$lang.'/\/(.*)/?$', 'index.php?lang='.$locale, 'top' ); }}add_action( 'init', 'custom_rewrite_rules' );
I've had problems with permalink structures too. Sometimes clicking the permalink you want, and save again solves the problem. As WordPress rewrites the htaccess when saving.