Markdownify\Converter::handleTag_pre PHP Метод

    protected function handleTag_pre()
    {
        if ($this->keepHTML && $this->parser->isStartTag) {
            // check if a simple <code> follows
            if (!preg_match('#^\\s*<code\\s*>#Us', $this->parser->html)) {
                // this is no standard markdown code block
                $this->handleTagToText();
                return;
            }
        }
        $this->indent('    ');
        if (!$this->parser->isStartTag) {
            $this->setLineBreaks(2);
        } else {
            $this->parser->html = ltrim($this->parser->html);
        }
    }