Dynamic template page calling shared taxonomies CPT or Plugin post type : how to clone taxonomy for plugin + set up dynamic shortcode

The solution for now is : create a plugin re-creating the shortcode with the current page slug.
Naming the page slug like the category slug.
And manually add the category to dflip.

Couldn’t find better so far.

// Disable direct access
defined('ABSPATH') or die('No script kiddies please!');

// use page slug to call dflip book in same slug dflip_category
add_shortcode('dflip_book_slug', 'shortcode_dflip_book_slug');
function shortcode_dflip_book_slug($atts = array(), $content="", $tag)
{
    global $post;

    // default parameters (but filtered, only declared ones are passed)
    // $atts = shortcode_atts(array(
    //   'books' => $post->post_name
    // ), $atts, $tag);

    $atts = is_array($atts) ? $atts : array();

    if (array_key_exists('books', $atts)) {
        $atts['books'] = str_replace('%slug%', $post->post_name, $atts['books']);
    } else {
        // par défaut on passe le slug
        $atts['books'] = $post->post_name;
    }

    $atts_str = array();
    foreach ($atts as $key => $value) {
        $atts_str[] = $key . '="' . str_replace('"', '\"', $value) . '"';
    }

    $shortcode="[dflip " . implode(' ', $atts_str) . ']' . $content . '[/dflip]';
    return do_shortcode($shortcode);
}