test.php

<?php
class CustomRender extends Sundown\Render\HTML
{
        public function normaltext($paragraph)
        {
                return nl2br($paragraph);
        }
}

$render = new CustomRender();
$sd = new Sundown\Markdown($render);

echo $sd->render("Original:

**test a écrit:**
> look
> at
>
> this
>
>
> Exemple !");