Parsedown::blockList( $Line,  $CurrentBlock = null )

    protected function blockList($Line, array $CurrentBlock = null)
    {
        list($name, $pattern) = $Line['text'][0] <= '-' ? array('ul', '[*+-]') : array('ol', '[0-9]{1,9}+[.\)]');

        if (preg_match('/^('.$pattern.'([ ]++|$))(.*+)/', $Line['text'], $matches))
        {
            $contentIndent = strlen($matches[2]);

            if ($contentIndent >= 5)
            {
                $contentIndent -= 1;
                $matches[1] = substr($matches[1], 0, -$contentIndent);
                $matches[3] = str_repeat(' ', $contentIndent) . $matches[3];
            }
            elseif ($contentIndent === 0)
            {
                $matches[1] .= ' ';
            }

            $markerWithoutWhitespace = strstr($matches[1], ' ', true);

            $Block = array(
                'indent' => $Line['indent'],
                'pattern' => $pattern,
                'data' => array(
                    'type' => $name,
                    'marker' => $matches[1],
                    'markerType' => ($name === 'ul' ? $markerWithoutWhitespace : substr($markerWithoutWhitespace, -1)),
                ),
                'element' => array(
                    'name' => $name,
                    'elements' => array(),
                ),
            );
            $Block['data']['markerTypeRegex'] = preg_quote($Block['data']['markerType'], '/');

            if ($name === 'ol')
            {
                $listStart = ltrim(strstr($matches[1], $Block['data']['markerType'], true), '0') ?: '0';

                if ($listStart !== '1')
                {
                    if (
                        isset($CurrentBlock)
                        and $CurrentBlock['type'] === 'Paragraph'
                        and ! isset($CurrentBlock['interrupted'])
                    ) {
                        return;
                    }

                    $Block['element']['attributes'] = array('start' => $listStart);
                }
            }

            $Block['li'] = array(
                'name' => 'li',
                'handler' => array(
                    'function' => 'li',
                    'argument' => !empty($matches[3]) ? array($matches[3]) : array(),
                    'destination' => 'elements'
                )
            );

            $Block['element']['elements'] []= & $Block['li'];

            return $Block;
        }
    }