CPT post permalink with taxonomy slug

Post_permalink_with_taxonomy_slug.php

<?php
/*
'rewrite' => array('slug' => 'scripts/%custom-taxonomy%'), // register post type arg 'rewrite'
*/
add_filter('post_type_link', 'change_cpt_post_permalink', 99, 3);
function change_cpt_post_permalink($permalink, $post_id) {
    if (strpos($permalink, '%custom-taxonomy%') === FALSE)
        return $permalink;
    $post = get_post($post_id);
    if (!$post)
        return $permalink;

    $terms = wp_get_object_terms($post->ID, 'scripts-cat');
    if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0]))
        $taxonomy_slug = $terms[0]->slug;
    else
        $taxonomy_slug = 'no-category';

    return str_replace('%custom-taxonomy%', $taxonomy_slug, $permalink);
}