Filter menu links too please

The plugin doesn’t apply to external links in menus. IMO it would be kinda nice.
I found if you add
add_filter( 'wp_nav_menu_items', 'cn_nf_url_parse' );
to the php file, it does. Can you add this line of code?

https://ww.wp.xz.cn/plugins/nofollow-for-external-link/