Load custom search template from plugin

Code snippet to load custom search template from a WordPress plugin.

add_filter('template_include','load_custom_search_template');

function load_custom_search_template($template){
    global $post;
    if (is_search()){
        $template = plugin_dir_path( __FILE__ ) . "templates/custom-search.php";
    }
    return $template;
}