How Does comment_author Filter Work?

Question

I want my plugin to add extra text after a comment author's name. For example if they've commented as "Albert", I might want the comments section to display their name as "Albert (genius)".

I'm trying to use the comment_author filter as follows, but it doesn't seem to have any visible effect:

function my_author_filter($author) {

    return $author . '( genius)';

}

add_filter( 'comment_author', 'my_author_filter'); 

Thanks

Answer 1

Sometimes themes call get_comment_author instead, and bypass the comment_author function. Try using that filter instead.