wiki-grav/plugins/shortcode-custom/Prismjsshuser.php

<?php
namespace Grav\Plugin\Shortcodes;

use Thunder\Shortcode\Shortcode\ShortcodeInterface;

class Prismjsshuser extends Shortcode
{
    public function init()
    {
        $this->shortcode->getRawHandlers()->add('shuser', function(ShortcodeInterface $sc) {
            $content = preg_replace('/^```.*(\n)?$/m', '', $sc->getContent());
            $content = trim($content);
            return '<pre class="command-line language-sh" data-prompt="$" data-continuation-str="\" tabindex="0"><code class="language-sh">'.$content.'</code></pre>';
        });
    }
}
?>