wishlist_save_label

If you want to add custom label to the wishlist button, then copy and paste this code to the functions.php file.

add_filter('wishlist_button_save_label', 'wishlist_button_save_label_20201908', 5);

function wishlist_button_save_label_20201908($save_html){


    $save_html = 'Custom label';

    return $save_html;
}
wishlist_save_label 1