/**
 * Detect posts
 */
function pm_detect_post_slugs($query) {
    global $wpdb, $pm_query;

    // Do not run if custom permalink was detected
    if(!empty($pm_query['id'])) {
        return $query;
    }

    // 1. Get the slug
    if(!empty($query['pagename'])) {
        $post_name = $query['pagename'];
    } else if(!empty($query['name'])) {
        $post_name = $query['name'];
    } else if(!empty($query['attachment'])) {
        $post_name = $query['attachment'];
    }

    if(!empty($post_name)) {
        $post_name = basename($post_name);

        // 2. Check if the slug is assigned to any post item
        $sql_query = "SELECT post_name, post_type FROM $wpdb->posts WHERE 1=1 AND post_name = %s";
        $post = $wpdb->get_row($wpdb->prepare($sql_query, array($post_name)));

        // 3. Filter the query if post was found
        if(!empty($post->post_name)) {
            $page = (!empty($query['page'])) ? $query['page'] : 1;
            $new_query = array(
                'post_type' => $post->post_type,
                $post->post_type => $post->post_name,
                'page' => $page,
                'do_not_redirect' => 1,
            );

            // 4. Disable canonical redirect
            remove_action('template_redirect', 'wp_old_slug_redirect');
            remove_action('template_redirect', 'redirect_canonical');
            add_filter('wpml_is_redirected', '__return_false', 99, 2);
            add_filter('pll_check_canonical_url', '__return_false', 99, 2);
            return $new_query;
        }
    }
    return $query;
}
add_filter('request', 'pm_detect_post_slugs', 9999);