Not sure if you can answer this... but I'm trying to use your very helpful byline override to show the byline author on a category post list, using the WP Category Post List plugin. The code that it uses to display the author is
/** Add author? */
$post_output .= ((true == $op['show_author'])? ' <span class="wp-cpl-author">' . __('By ', $wp_cat_list_itg_tans) . 'post_author) . '">' . get_the_author_meta('display_name', $post->post_author) . '</span>' : '');
I've tried a few things, using the_author and byline in various places, but I'm not very knowledgable with WP's setup. Do you know how I could do that?