From 1a2ed388240e5909f1063fdfb9b91735c862c12f Mon Sep 17 00:00:00 2001
From: ornicar <thibault.duplessis@gmail.com>
Date: Thu, 6 May 2010 11:58:44 +0200
Subject: [PATCH] Transform php markdown to a php5 lib

---
 Parser/Light.php                 |    9 +-
 Tests/Parser/LightTest.php       |    2 +-
 vendor/parser/MarkdownParser.php | 1547 ++++++++++++++++++++++++++
 vendor/parser/markdown.php       | 1736 ------------------------------
 4 files changed, 1551 insertions(+), 1743 deletions(-)
 create mode 100644 vendor/parser/MarkdownParser.php
 delete mode 100644 vendor/parser/markdown.php

diff --git a/Parser/Light.php b/Parser/Light.php
index b20dc37..ec51649 100644
--- a/Parser/Light.php
+++ b/Parser/Light.php
@@ -2,12 +2,9 @@
 
 namespace Bundle\MarkdownBundle\Parser;
 
-require_once(realpath(__DIR__.'/..').'/vendor/parser/markdown.php');
+require_once(realpath(__DIR__.'/..').'/vendor/parser/MarkdownParser.php');
 
-class Light extends \Markdown_Parser
+class Light extends \MarkdownParser
 {
-  public function __construct()
-  {
-    parent::Markdown_Parser();
-  }
+  
 }
\ No newline at end of file
diff --git a/Tests/Parser/LightTest.php b/Tests/Parser/LightTest.php
index f753cc9..0b321c6 100644
--- a/Tests/Parser/LightTest.php
+++ b/Tests/Parser/LightTest.php
@@ -14,7 +14,7 @@ class LightTest extends \PHPUnit_Framework_TestCase
   {
     $parser = new Parser();
 
-    $this->assertTrue($parser instanceof \Markdown_Parser);
+    $this->assertTrue($parser instanceof \MarkdownParser);
 
     return $parser;
   }
diff --git a/vendor/parser/MarkdownParser.php b/vendor/parser/MarkdownParser.php
new file mode 100644
index 0000000..db899bf
--- /dev/null
+++ b/vendor/parser/MarkdownParser.php
@@ -0,0 +1,1547 @@
+<?php
+
+/**
+ * Markdown parser provides basic markdown syntax as described here http://daringfireball.net/projects/markdown/syntax
+ */
+class MarkdownParser
+{
+  # Regex to match balanced [brackets].
+  # Needed to insert a maximum bracked depth while converting to PHP.
+
+  protected $nested_brackets_depth = 6;
+  protected $nested_brackets_re;
+  protected $nested_url_parenthesis_depth = 4;
+  protected $nested_url_parenthesis_re;
+
+  # Table of hash values for escaped characters:
+  protected $escape_chars = '\`*_{}[]()>#+-.!';
+  protected $escape_chars_re;
+
+  # Change to ">" for HTML output.
+  protected $empty_element_suffix = ' />';
+  protected $tab_width = 4;
+
+  # Change to `true` to disallow markup or entities.
+  protected $no_markup = false;
+  protected $no_entities = false;
+
+  # Predefined urls and titles for reference links and images.
+  protected $predef_urls = array();
+  protected $predef_titles = array();
+
+  # Internal hashes used during transformation.
+  protected $urls = array();
+  protected $titles = array();
+  protected $html_hashes = array();
+
+  # Status flag to avoid invalid nesting.
+  protected $in_anchor = false;
+
+  protected $document_gamut = array(
+    # Strip link definitions, store in hashes.
+    "stripLinkDefinitions" => 20,
+    "runBasicBlockGamut" => 30,
+  );
+
+  protected $block_gamut = array(
+    #
+    # These are all the transformations that form block-level
+    # tags like paragraphs, headers, and list items.
+    #
+    "doHeaders" => 10,
+    "doHorizontalRules" => 20,
+    "doLists" => 40,
+    "doCodeBlocks" => 50,
+    "doBlockQuotes" => 60,
+  );
+
+  protected $list_level = 0;
+
+  protected $span_gamut = array(
+    #
+    # These are all the transformations that occur *within* block-level
+    # tags like paragraphs, headers, and list items.
+    #
+    # Process character escapes, code spans, and inline HTML
+    # in one shot.
+    "parseSpan" => -30,
+    # Process anchor and image tags. Images must come first,
+    # because ![foo][f] looks like an anchor.
+    "doImages" => 10,
+    "doAnchors" => 20,
+    # Make links out of things like `<http://example.com/>`
+    # Must come after doAnchors, because you can use < and >
+    # delimiters in inline links like [this](<url>).
+    "doAutoLinks" => 30,
+    "encodeAmpsAndAngles" => 40,
+    "doItalicsAndBold" => 50,
+    "doHardBreaks" => 60,
+  );
+
+  protected $em_relist = array(
+    '' => '(?:(?<!\*)\*(?!\*)|(?<!_)_(?!_))(?=\S|$)(?![.,:;]\s)',
+    '*' => '(?<=\S|^)(?<!\*)\*(?!\*)',
+    '_' => '(?<=\S|^)(?<!_)_(?!_)',
+  );
+  protected $strong_relist = array(
+    '' => '(?:(?<!\*)\*\*(?!\*)|(?<!_)__(?!_))(?=\S|$)(?![.,:;]\s)',
+    '**' => '(?<=\S|^)(?<!\*)\*\*(?!\*)',
+    '__' => '(?<=\S|^)(?<!_)__(?!_)',
+  );
+  protected $em_strong_relist = array(
+    '' => '(?:(?<!\*)\*\*\*(?!\*)|(?<!_)___(?!_))(?=\S|$)(?![.,:;]\s)',
+    '***' => '(?<=\S|^)(?<!\*)\*\*\*(?!\*)',
+    '___' => '(?<=\S|^)(?<!_)___(?!_)',
+  );
+  protected $em_strong_prepared_relist;
+
+  # String length function for detab. `_initDetab` will create a function to
+  # hanlde UTF-8 if the default function does not exist.
+
+  protected $utf8_strlen = 'mb_strlen';
+
+  public function __construct()
+  {
+    $this->_initDetab();
+    $this->prepareItalicsAndBold();
+
+    $this->nested_brackets_re =
+    str_repeat('(?>[^\[\]]+|\[', $this->nested_brackets_depth) .
+    str_repeat('\])*', $this->nested_brackets_depth);
+
+    $this->nested_url_parenthesis_re =
+    str_repeat('(?>[^()\s]+|\(', $this->nested_url_parenthesis_depth) .
+    str_repeat('(?>\)))*', $this->nested_url_parenthesis_depth);
+
+    $this->escape_chars_re = '[' . preg_quote($this->escape_chars) . ']';
+
+    # Sort document, block, and span gamut in ascendent priority order.
+    asort($this->document_gamut);
+    asort($this->block_gamut);
+    asort($this->span_gamut);
+  }
+
+  public function transform($text)
+  {
+    #
+    # Main function. Performs some preprocessing on the input text
+    # and pass it through the document gamut.
+    #
+    $this->setup();
+
+    # Remove UTF-8 BOM and marker character in input, if present.
+    $text = preg_replace('{^\xEF\xBB\xBF|\x1A}', '', $text);
+
+    # Standardize line endings:
+    #   DOS to Unix and Mac to Unix
+    $text = preg_replace('{\r\n?}', "\n", $text);
+
+    # Make sure $text ends with a couple of newlines:
+    $text .= "\n\n";
+
+    # Convert all tabs to spaces.
+    $text = $this->detab($text);
+
+    # Turn block-level HTML blocks into hash entries
+    $text = $this->hashHTMLBlocks($text);
+
+    # Strip any lines consisting only of spaces and tabs.
+    # This makes subsequent regexen easier to write, because we can
+    # match consecutive blank lines with /\n+/ instead of something
+    # contorted like /[ ]*\n+/ .
+    $text = preg_replace('/^[ ]+$/m', '', $text);
+
+    # Run document gamut methods.
+    foreach ($this->document_gamut as $method => $priority)
+    {
+      $text = $this->$method($text);
+    }
+
+    $this->teardown();
+
+    return $text . "\n";
+  }
+
+  protected function setup()
+  {
+    #
+    # Called before the transformation process starts to setup parser
+    # states.
+    #
+    # Clear global hashes.
+    $this->urls = $this->predef_urls;
+    $this->titles = $this->predef_titles;
+    $this->html_hashes = array();
+
+    $in_anchor = false;
+  }
+
+  protected function teardown()
+  {
+    #
+    # Called after the transformation process to clear any variable
+    # which may be taking up memory unnecessarly.
+    #
+    $this->urls = array();
+    $this->titles = array();
+    $this->html_hashes = array();
+  }
+
+  protected function stripLinkDefinitions($text)
+  {
+    #
+    # Strips link definitions from text, stores the URLs and titles in
+    # hash references.
+    #
+    $less_than_tab = $this->tab_width - 1;
+
+    # Link defs are in the form: ^[id]: url "optional title"
+    $text = preg_replace_callback('{
+							^[ ]{0,' . $less_than_tab . '}\[(.+)\][ ]?:	# id = $1
+							  [ ]*
+							  \n?				# maybe *one* newline
+							  [ ]*
+							(?:
+							  <(.+?)>			# url = $2
+							|
+							  (\S+?)			# url = $3
+							)
+							  [ ]*
+							  \n?				# maybe one newline
+							  [ ]*
+							(?:
+								(?<=\s)			# lookbehind for whitespace
+								["(]
+								(.*?)			# title = $4
+								[")]
+								[ ]*
+							)?	# title is optional
+							(?:\n+|\Z)
+			}xm',
+    array(&$this, '_stripLinkDefinitions_callback'),
+    $text);
+    return $text;
+  }
+
+  protected function _stripLinkDefinitions_callback($matches)
+  {
+    $link_id = strtolower($matches[1]);
+    $url = $matches[2] == '' ? $matches[3] : $matches[2];
+    $this->urls[$link_id] = $url;
+    $this->titles[$link_id] = & $matches[4];
+    return ''; # String that will replace the block
+  }
+
+  protected function hashHTMLBlocks($text)
+  {
+    if ($this->no_markup)
+      return $text;
+
+    $less_than_tab = $this->tab_width - 1;
+
+    # Hashify HTML blocks:
+    # We only want to do this for block-level HTML tags, such as headers,
+    # lists, and tables. That's because we still want to wrap <p>s around
+    # "paragraphs" that are wrapped in non-block-level tags, such as anchors,
+    # phrase emphasis, and spans. The list of tags we're looking for is
+    # hard-coded:
+    #
+    # *  List "a" is made of tags which can be both inline or block-level.
+    #    These will be treated block-level when the start tag is alone on
+    #    its line, otherwise they're not matched here and will be taken as
+    #    inline later.
+    # *  List "b" is made of tags which are always block-level;
+    #
+    $block_tags_a_re = 'ins|del';
+    $block_tags_b_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|' .
+    'script|noscript|form|fieldset|iframe|math';
+
+    # Regular expression for the content of a block tag.
+    $nested_tags_level = 4;
+    $attr = '
+			(?>				# optional tag attributes
+			  \s			# starts with whitespace
+			  (?>
+				[^>"/]+		# text outside quotes
+			  |
+				/+(?!>)		# slash not followed by ">"
+			  |
+				"[^"]*"		# text inside double quotes (tolerate ">")
+			  |
+				\'[^\']*\'	# text inside single quotes (tolerate ">")
+			  )*
+			)?	
+			';
+    $content =
+    str_repeat('
+				(?>
+				  [^<]+			# content without tag
+				|
+				  <\2			# nested opening tag
+					' . $attr . '	# attributes
+					(?>
+					  />
+					|
+					  >', $nested_tags_level) . # end of opening tag
+    '.*?' . # last level nested tag content
+    str_repeat('
+					  </\2\s*>	# closing nested tag
+					)
+				  |				
+					<(?!/\2\s*>	# other tags with a different name
+				  )
+				)*',
+    $nested_tags_level);
+    $content2 = str_replace('\2', '\3', $content);
+
+    # First, look for nested blocks, e.g.:
+    # 	<div>
+    # 		<div>
+    # 		tags for inner block must be indented.
+    # 		</div>
+    # 	</div>
+    #
+    # The outermost tags must start at the left margin for this to match, and
+    # the inner nested divs must be indented.
+    # We need to do this before the next, more liberal match, because the next
+    # match will start at the first `<div>` and stop at the first `</div>`.
+    $text = preg_replace_callback('{(?>
+			(?>
+				(?<=\n\n)		# Starting after a blank line
+				|				# or
+				\A\n?			# the beginning of the doc
+			)
+			(						# save in $1
+
+			  # Match from `\n<tag>` to `</tag>\n`, handling nested tags 
+			  # in between.
+					
+						[ ]{0,' . $less_than_tab . '}
+						<(' . $block_tags_b_re . ')# start tag = $2
+						' . $attr . '>			# attributes followed by > and \n
+						' . $content . '		# content, support nesting
+						</\2>				# the matching end tag
+						[ ]*				# trailing spaces/tabs
+						(?=\n+|\Z)	# followed by a newline or end of document
+
+			| # Special version for tags of group a.
+
+						[ ]{0,' . $less_than_tab . '}
+						<(' . $block_tags_a_re . ')# start tag = $3
+						' . $attr . '>[ ]*\n	# attributes followed by >
+						' . $content2 . '		# content, support nesting
+						</\3>				# the matching end tag
+						[ ]*				# trailing spaces/tabs
+						(?=\n+|\Z)	# followed by a newline or end of document
+					
+			| # Special case just for <hr />. It was easier to make a special 
+			  # case than to make the other regex more complicated.
+			
+						[ ]{0,' . $less_than_tab . '}
+						<(hr)				# start tag = $2
+						' . $attr . '			# attributes
+						/?>					# the matching end tag
+						[ ]*
+						(?=\n{2,}|\Z)		# followed by a blank line or end of document
+			
+			| # Special case for standalone HTML comments:
+			
+					[ ]{0,' . $less_than_tab . '}
+					(?s:
+						<!-- .*? -->
+					)
+					[ ]*
+					(?=\n{2,}|\Z)		# followed by a blank line or end of document
+			
+			| # PHP and ASP-style processor instructions (<? and <%)
+			
+					[ ]{0,' . $less_than_tab . '}
+					(?s:
+						<([?%])			# $2
+						.*?
+						\2>
+					)
+					[ ]*
+					(?=\n{2,}|\Z)		# followed by a blank line or end of document
+					
+			)
+			)}Sxmi',
+    array(&$this, '_hashHTMLBlocks_callback'),
+    $text);
+
+    return $text;
+  }
+
+  protected function _hashHTMLBlocks_callback($matches)
+  {
+    $text = $matches[1];
+    $key = $this->hashBlock($text);
+    return "\n\n$key\n\n";
+  }
+
+  protected function hashPart($text, $boundary = 'X')
+  {
+    #
+    # Called whenever a tag must be hashed when a function insert an atomic
+    # element in the text stream. Passing $text to through this function gives
+    # a unique text-token which will be reverted back when calling unhash.
+    #
+    # The $boundary argument specify what character should be used to surround
+    # the token. By convension, "B" is used for block elements that needs not
+    # to be wrapped into paragraph tags at the end, ":" is used for elements
+    # that are word separators and "X" is used in the general case.
+    #
+    # Swap back any tag hash found in $text so we do not have to `unhash`
+    # multiple times at the end.
+    $text = $this->unhash($text);
+
+    # Then hash the block.
+    static $i = 0;
+    $key = "$boundary\x1A" . ++$i . $boundary;
+    $this->html_hashes[$key] = $text;
+    return $key; # String that will replace the tag.
+  }
+
+  protected function hashBlock($text)
+  {
+    #
+    # Shortcut function for hashPart with block-level boundaries.
+    #
+    return $this->hashPart($text, 'B');
+  }
+
+  protected function runBlockGamut($text)
+  {
+    #
+    # Run block gamut tranformations.
+    #
+    # We need to escape raw HTML in Markdown source before doing anything
+    # else. This need to be done for each block, and not only at the
+    # begining in the Markdown function since hashed blocks can be part of
+    # list items and could have been indented. Indented blocks would have
+    # been seen as a code block in a previous pass of hashHTMLBlocks.
+    $text = $this->hashHTMLBlocks($text);
+
+    return $this->runBasicBlockGamut($text);
+  }
+
+  protected function runBasicBlockGamut($text)
+  {
+    #
+    # Run block gamut tranformations, without hashing HTML blocks. This is
+    # useful when HTML blocks are known to be already hashed, like in the first
+    # whole-document pass.
+    #
+    foreach ($this->block_gamut as $method => $priority)
+    {
+      $text = $this->$method($text);
+    }
+
+    # Finally form paragraph and restore hashed blocks.
+    $text = $this->formParagraphs($text);
+
+    return $text;
+  }
+
+  protected function doHorizontalRules($text)
+  {
+    # Do Horizontal Rules:
+    return preg_replace(
+    '{
+				^[ ]{0,3}	# Leading space
+				([-*_])		# $1: First marker
+				(?>			# Repeated marker group
+					[ ]{0,2}	# Zero, one, or two spaces.
+					\1			# Marker character
+				){2,}		# Group repeated at least twice
+				[ ]*		# Tailing spaces
+				$			# End of line.
+			}mx',
+    "\n" . $this->hashBlock("<hr$this->empty_element_suffix") . "\n",
+    $text);
+  }
+
+  protected function runSpanGamut($text)
+  {
+    #
+    # Run span gamut tranformations.
+    #
+    foreach ($this->span_gamut as $method => $priority)
+    {
+      $text = $this->$method($text);
+    }
+
+    return $text;
+  }
+
+  protected function doHardBreaks($text)
+  {
+    # Do hard breaks:
+    return preg_replace_callback('/ {2,}\n/',
+    array(&$this, '_doHardBreaks_callback'), $text);
+  }
+
+  protected function _doHardBreaks_callback($matches)
+  {
+    return $this->hashPart("<br$this->empty_element_suffix\n");
+  }
+
+  protected function doAnchors($text)
+  {
+    #
+    # Turn Markdown link shortcuts into XHTML <a> tags.
+    #
+    if ($this->in_anchor)
+      return $text;
+    $this->in_anchor = true;
+
+    #
+    # First, handle reference-style links: [link text] [id]
+    #
+    $text = preg_replace_callback('{
+			(					# wrap whole match in $1
+			  \[
+				(' . $this->nested_brackets_re . ')	# link text = $2
+			  \]
+
+			  [ ]?				# one optional space
+			  (?:\n[ ]*)?		# one optional newline followed by spaces
+
+			  \[
+				(.*?)		# id = $3
+			  \]
+			)
+			}xs',
+    array(&$this, '_doAnchors_reference_callback'), $text);
+
+    #
+    # Next, inline-style links: [link text](url "optional title")
+    #
+    $text = preg_replace_callback('{
+			(				# wrap whole match in $1
+			  \[
+				(' . $this->nested_brackets_re . ')	# link text = $2
+			  \]
+			  \(			# literal paren
+				[ \n]*
+				(?:
+					<(.+?)>	# href = $3
+				|
+					(' . $this->nested_url_parenthesis_re . ')	# href = $4
+				)
+				[ \n]*
+				(			# $5
+				  ([\'"])	# quote char = $6
+				  (.*?)		# Title = $7
+				  \6		# matching quote
+				  [ \n]*	# ignore any spaces/tabs between closing quote and )
+				)?			# title is optional
+			  \)
+			)
+			}xs',
+    array(&$this, '_doAnchors_inline_callback'), $text);
+
+    #
+    # Last, handle reference-style shortcuts: [link text]
+    # These must come last in case you've also got [link text][1]
+    # or [link text](/foo)
+    #
+    $text = preg_replace_callback('{
+			(					# wrap whole match in $1
+			  \[
+				([^\[\]]+)		# link text = $2; can\'t contain [ or ]
+			  \]
+			)
+			}xs',
+    array(&$this, '_doAnchors_reference_callback'), $text);
+
+    $this->in_anchor = false;
+    return $text;
+  }
+
+  protected function _doAnchors_reference_callback($matches)
+  {
+    $whole_match = $matches[1];
+    $link_text = $matches[2];
+    $link_id = & $matches[3];
+
+    if ($link_id == "")
+    {
+      # for shortcut links like [this][] or [this].
+      $link_id = $link_text;
+    }
+
+    # lower-case and turn embedded newlines into spaces
+    $link_id = strtolower($link_id);
+    $link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
+
+    if (isset($this->urls[$link_id]))
+    {
+      $url = $this->urls[$link_id];
+      $url = $this->encodeAttribute($url);
+
+      $result = "<a href=\"$url\"";
+      if (isset($this->titles[$link_id]))
+      {
+        $title = $this->titles[$link_id];
+        $title = $this->encodeAttribute($title);
+        $result .= " title=\"$title\"";
+      }
+
+      $link_text = $this->runSpanGamut($link_text);
+      $result .= ">$link_text</a>";
+      $result = $this->hashPart($result);
+    } else
+    {
+      $result = $whole_match;
+    }
+    return $result;
+  }
+
+  protected function _doAnchors_inline_callback($matches)
+  {
+    $whole_match = $matches[1];
+    $link_text = $this->runSpanGamut($matches[2]);
+    $url = $matches[3] == '' ? $matches[4] : $matches[3];
+    $title = & $matches[7];
+
+    $url = $this->encodeAttribute($url);
+
+    $result = "<a href=\"$url\"";
+    if (isset($title))
+    {
+      $title = $this->encodeAttribute($title);
+      $result .= " title=\"$title\"";
+    }
+
+    $link_text = $this->runSpanGamut($link_text);
+    $result .= ">$link_text</a>";
+
+    return $this->hashPart($result);
+  }
+
+  protected function doImages($text)
+  {
+    #
+    # Turn Markdown image shortcuts into <img> tags.
+    #
+    #
+    # First, handle reference-style labeled images: ![alt text][id]
+    #
+    $text = preg_replace_callback('{
+			(				# wrap whole match in $1
+			  !\[
+				(' . $this->nested_brackets_re . ')		# alt text = $2
+			  \]
+
+			  [ ]?				# one optional space
+			  (?:\n[ ]*)?		# one optional newline followed by spaces
+
+			  \[
+				(.*?)		# id = $3
+			  \]
+
+			)
+			}xs',
+    array(&$this, '_doImages_reference_callback'), $text);
+
+    #
+    # Next, handle inline images:  ![alt text](url "optional title")
+    # Don't forget: encode * and _
+    #
+    $text = preg_replace_callback('{
+			(				# wrap whole match in $1
+			  !\[
+				(' . $this->nested_brackets_re . ')		# alt text = $2
+			  \]
+			  \s?			# One optional whitespace character
+			  \(			# literal paren
+				[ \n]*
+				(?:
+					<(\S*)>	# src url = $3
+				|
+					(' . $this->nested_url_parenthesis_re . ')	# src url = $4
+				)
+				[ \n]*
+				(			# $5
+				  ([\'"])	# quote char = $6
+				  (.*?)		# title = $7
+				  \6		# matching quote
+				  [ \n]*
+				)?			# title is optional
+			  \)
+			)
+			}xs',
+    array(&$this, '_doImages_inline_callback'), $text);
+
+    return $text;
+  }
+
+  protected function _doImages_reference_callback($matches)
+  {
+    $whole_match = $matches[1];
+    $alt_text = $matches[2];
+    $link_id = strtolower($matches[3]);
+
+    if ($link_id == "")
+    {
+      $link_id = strtolower($alt_text); # for shortcut links like ![this][].
+    }
+
+    $alt_text = $this->encodeAttribute($alt_text);
+    if (isset($this->urls[$link_id]))
+    {
+      $url = $this->encodeAttribute($this->urls[$link_id]);
+      $result = "<img src=\"$url\" alt=\"$alt_text\"";
+      if (isset($this->titles[$link_id]))
+      {
+        $title = $this->titles[$link_id];
+        $title = $this->encodeAttribute($title);
+        $result .= " title=\"$title\"";
+      }
+      $result .= $this->empty_element_suffix;
+      $result = $this->hashPart($result);
+    } else
+    {
+      # If there's no such link ID, leave intact:
+      $result = $whole_match;
+    }
+
+    return $result;
+  }
+
+  protected function _doImages_inline_callback($matches)
+  {
+    $whole_match = $matches[1];
+    $alt_text = $matches[2];
+    $url = $matches[3] == '' ? $matches[4] : $matches[3];
+    $title = & $matches[7];
+
+    $alt_text = $this->encodeAttribute($alt_text);
+    $url = $this->encodeAttribute($url);
+    $result = "<img src=\"$url\" alt=\"$alt_text\"";
+    if (isset($title))
+    {
+      $title = $this->encodeAttribute($title);
+      $result .= " title=\"$title\""; # $title already quoted
+    }
+    $result .= $this->empty_element_suffix;
+
+    return $this->hashPart($result);
+  }
+
+  protected function doHeaders($text)
+  {
+    # Setext-style headers:
+    #	  Header 1
+    #	  ========
+    #
+    #	  Header 2
+    #	  --------
+    #
+    $text = preg_replace_callback('{ ^(.+?)[ ]*\n(=+|-+)[ ]*\n+ }mx',
+    array(&$this, '_doHeaders_callback_setext'), $text);
+
+    # atx-style headers:
+    #	# Header 1
+    #	## Header 2
+    #	## Header 2 with closing hashes ##
+    #	...
+    #	###### Header 6
+    #
+    $text = preg_replace_callback('{
+				^(\#{1,6})	# $1 = string of #\'s
+				[ ]*
+				(.+?)		# $2 = Header text
+				[ ]*
+				\#*			# optional closing #\'s (not counted)
+				\n+
+			}xm',
+    array(&$this, '_doHeaders_callback_atx'), $text);
+
+    return $text;
+  }
+
+  protected function _doHeaders_callback_setext($matches)
+  {
+    # Terrible hack to check we haven't found an empty list item.
+    if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1]))
+      return $matches[0];
+
+    $level = $matches[2]{0} == '=' ? 1 : 2;
+    $block = "<h$level>" . $this->runSpanGamut($matches[1]) . "</h$level>";
+    return "\n" . $this->hashBlock($block) . "\n\n";
+  }
+
+  protected function _doHeaders_callback_atx($matches)
+  {
+    $level = strlen($matches[1]);
+    $block = "<h$level>" . $this->runSpanGamut($matches[2]) . "</h$level>";
+    return "\n" . $this->hashBlock($block) . "\n\n";
+  }
+
+  protected function doLists($text)
+  {
+    #
+    # Form HTML ordered (numbered) and unordered (bulleted) lists.
+    #
+    $less_than_tab = $this->tab_width - 1;
+
+    # Re-usable patterns to match list item bullets and number markers:
+    $marker_ul_re = '[*+-]';
+    $marker_ol_re = '\d+[.]';
+    $marker_any_re = "(?:$marker_ul_re|$marker_ol_re)";
+
+    $markers_relist = array(
+      $marker_ul_re => $marker_ol_re,
+      $marker_ol_re => $marker_ul_re,
+    );
+
+    foreach ($markers_relist as $marker_re => $other_marker_re)
+    {
+      # Re-usable pattern to match any entirel ul or ol list:
+      $whole_list_re = '
+				(								# $1 = whole list
+				  (								# $2
+					([ ]{0,' . $less_than_tab . '})	# $3 = number of spaces
+					(' . $marker_re . ')			# $4 = first list item marker
+					[ ]+
+				  )
+				  (?s:.+?)
+				  (								# $5
+					  \z
+					|
+					  \n{2,}
+					  (?=\S)
+					  (?!						# Negative lookahead for another list item marker
+						[ ]*
+						' . $marker_re . '[ ]+
+					  )
+					|
+					  (?=						# Lookahead for another kind of list
+					    \n
+						\3						# Must have the same indentation
+						' . $other_marker_re . '[ ]+
+					  )
+				  )
+				)
+			'; // mx
+      # We use a different prefix before nested lists than top-level lists.
+      # See extended comment in _ProcessListItems().
+
+      if ($this->list_level)
+      {
+        $text = preg_replace_callback('{
+						^
+						' . $whole_list_re . '
+					}mx',
+        array(&$this, '_doLists_callback'), $text);
+      } else
+      {
+        $text = preg_replace_callback('{
+						(?:(?<=\n)\n|\A\n?) # Must eat the newline
+						' . $whole_list_re . '
+					}mx',
+        array(&$this, '_doLists_callback'), $text);
+      }
+    }
+
+    return $text;
+  }
+
+  protected function _doLists_callback($matches)
+  {
+    # Re-usable patterns to match list item bullets and number markers:
+    $marker_ul_re = '[*+-]';
+    $marker_ol_re = '\d+[.]';
+    $marker_any_re = "(?:$marker_ul_re|$marker_ol_re)";
+
+    $list = $matches[1];
+    $list_type = preg_match("/$marker_ul_re/", $matches[4]) ? "ul" : "ol";
+
+    $marker_any_re = ( $list_type == "ul" ? $marker_ul_re : $marker_ol_re );
+
+    $list .= "\n";
+    $result = $this->processListItems($list, $marker_any_re);
+
+    $result = $this->hashBlock("<$list_type>\n" . $result . "</$list_type>");
+    return "\n" . $result . "\n\n";
+  }
+
+  protected function processListItems($list_str, $marker_any_re)
+  {
+    #
+    #	Process the contents of a single ordered or unordered list, splitting it
+    #	into individual list items.
+    #
+    # The $this->list_level global keeps track of when we're inside a list.
+    # Each time we enter a list, we increment it; when we leave a list,
+    # we decrement. If it's zero, we're not in a list anymore.
+    #
+    # We do this because when we're not inside a list, we want to treat
+    # something like this:
+    #
+    #		I recommend upgrading to version
+    #		8. Oops, now this line is treated
+    #		as a sub-list.
+    #
+    # As a single paragraph, despite the fact that the second line starts
+    # with a digit-period-space sequence.
+    #
+    # Whereas when we're inside a list (or sub-list), that line will be
+    # treated as the start of a sub-list. What a kludge, huh? This is
+    # an aspect of Markdown's syntax that's hard to parse perfectly
+    # without resorting to mind-reading. Perhaps the solution is to
+    # change the syntax rules such that sub-lists must start with a
+    # starting cardinal number; e.g. "1." or "a.".
+
+    $this->list_level++;
+
+    # trim trailing blank lines:
+    $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
+
+    $list_str = preg_replace_callback('{
+			(\n)?							# leading line = $1
+			(^[ ]*)							# leading whitespace = $2
+			(' . $marker_any_re . '				# list marker and space = $3
+				(?:[ ]+|(?=\n))	# space only required if item is not empty
+			)
+			((?s:.*?))						# list item text   = $4
+			(?:(\n+(?=\n))|\n)				# tailing blank line = $5
+			(?= \n* (\z | \2 (' . $marker_any_re . ') (?:[ ]+|(?=\n))))
+			}xm',
+    array(&$this, '_processListItems_callback'), $list_str);
+
+    $this->list_level--;
+    return $list_str;
+  }
+
+  protected function _processListItems_callback($matches)
+  {
+    $item = $matches[4];
+    $leading_line = & $matches[1];
+    $leading_space = & $matches[2];
+    $marker_space = $matches[3];
+    $tailing_blank_line = & $matches[5];
+
+    if ($leading_line || $tailing_blank_line ||
+    preg_match('/\n{2,}/', $item))
+    {
+      # Replace marker with the appropriate whitespace indentation
+      $item = $leading_space . str_repeat(' ', strlen($marker_space)) . $item;
+      $item = $this->runBlockGamut($this->outdent($item) . "\n");
+    } else
+    {
+      # Recursion for sub-lists:
+      $item = $this->doLists($this->outdent($item));
+      $item = preg_replace('/\n+$/', '', $item);
+      $item = $this->runSpanGamut($item);
+    }
+
+    return "<li>" . $item . "</li>\n";
+  }
+
+  protected function doCodeBlocks($text)
+  {
+    #
+    #	Process Markdown `<pre><code>` blocks.
+    #
+    $text = preg_replace_callback('{
+				(?:\n\n|\A\n?)
+				(	            # $1 = the code block -- one or more lines, starting with a space/tab
+				  (?>
+					[ ]{' . $this->tab_width . '}  # Lines must start with a tab or a tab-width of spaces
+					.*\n+
+				  )+
+				)
+				((?=^[ ]{0,' . $this->tab_width . '}\S)|\Z)	# Lookahead for non-space at line-start, or end of doc
+			}xm',
+    array(&$this, '_doCodeBlocks_callback'), $text);
+
+    return $text;
+  }
+
+  protected function _doCodeBlocks_callback($matches)
+  {
+    $codeblock = $matches[1];
+
+    $codeblock = $this->outdent($codeblock);
+    $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
+
+    # trim leading newlines and trailing newlines
+    $codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock);
+
+    $codeblock = "<pre><code>$codeblock\n</code></pre>";
+    return "\n\n" . $this->hashBlock($codeblock) . "\n\n";
+  }
+
+  protected function makeCodeSpan($code)
+  {
+    #
+    # Create a code span markup for $code. Called from handleSpanToken.
+    #
+    $code = htmlspecialchars(trim($code), ENT_NOQUOTES);
+    return $this->hashPart("<code>$code</code>");
+  }
+
+  protected function prepareItalicsAndBold()
+  {
+    #
+    # Prepare regular expressions for searching emphasis tokens in any
+    # context.
+    #
+    foreach ($this->em_relist as $em => $em_re)
+    {
+      foreach ($this->strong_relist as $strong => $strong_re)
+      {
+        # Construct list of allowed token expressions.
+        $token_relist = array();
+        if (isset($this->em_strong_relist["$em$strong"]))
+        {
+          $token_relist[] = $this->em_strong_relist["$em$strong"];
+        }
+        $token_relist[] = $em_re;
+        $token_relist[] = $strong_re;
+
+        # Construct master expression from list.
+        $token_re = '{(' . implode('|', $token_relist) . ')}';
+        $this->em_strong_prepared_relist["$em$strong"] = $token_re;
+      }
+    }
+  }
+
+  protected function doItalicsAndBold($text)
+  {
+    $token_stack = array('');
+    $text_stack = array('');
+    $em = '';
+    $strong = '';
+    $tree_char_em = false;
+
+    while (1)
+    {
+      #
+      # Get prepared regular expression for seraching emphasis tokens
+      # in current context.
+      #
+      $token_re = $this->em_strong_prepared_relist["$em$strong"];
+
+      #
+      # Each loop iteration search for the next emphasis token.
+      # Each token is then passed to handleSpanToken.
+      #
+      $parts = preg_split($token_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
+      $text_stack[0] .= $parts[0];
+      $token = & $parts[1];
+      $text = & $parts[2];
+
+      if (empty($token))
+      {
+        # Reached end of text span: empty stack without emitting.
+        # any more emphasis.
+        while ($token_stack[0])
+        {
+          $text_stack[1] .= array_shift($token_stack);
+          $text_stack[0] .= array_shift($text_stack);
+        }
+        break;
+      }
+
+      $token_len = strlen($token);
+      if ($tree_char_em)
+      {
+        # Reached closing marker while inside a three-char emphasis.
+        if ($token_len == 3)
+        {
+          # Three-char closing marker, close em and strong.
+          array_shift($token_stack);
+          $span = array_shift($text_stack);
+          $span = $this->runSpanGamut($span);
+          $span = "<strong><em>$span</em></strong>";
+          $text_stack[0] .= $this->hashPart($span);
+          $em = '';
+          $strong = '';
+        } else
+        {
+          # Other closing marker: close one em or strong and
+          # change current token state to match the other
+          $token_stack[0] = str_repeat($token{0}, 3 - $token_len);
+          $tag = $token_len == 2 ? "strong" : "em";
+          $span = $text_stack[0];
+          $span = $this->runSpanGamut($span);
+          $span = "<$tag>$span</$tag>";
+          $text_stack[0] = $this->hashPart($span);
+          $$tag = ''; # $$tag stands for $em or $strong
+        }
+        $tree_char_em = false;
+      } else if ($token_len == 3)
+      {
+        if ($em)
+        {
+          # Reached closing marker for both em and strong.
+          # Closing strong marker:
+          for ($i = 0; $i < 2; ++$i)
+          {
+            $shifted_token = array_shift($token_stack);
+            $tag = strlen($shifted_token) == 2 ? "strong" : "em";
+            $span = array_shift($text_stack);
+            $span = $this->runSpanGamut($span);
+            $span = "<$tag>$span</$tag>";
+            $text_stack[0] .= $this->hashPart($span);
+            $$tag = ''; # $$tag stands for $em or $strong
+          }
+        } else
+        {
+          # Reached opening three-char emphasis marker. Push on token
+          # stack; will be handled by the special condition above.
+          $em = $token{0};
+          $strong = "$em$em";
+          array_unshift($token_stack, $token);
+          array_unshift($text_stack, '');
+          $tree_char_em = true;
+        }
+      } else if ($token_len == 2)
+      {
+        if ($strong)
+        {
+          # Unwind any dangling emphasis marker:
+          if (strlen($token_stack[0]) == 1)
+          {
+            $text_stack[1] .= array_shift($token_stack);
+            $text_stack[0] .= array_shift($text_stack);
+          }
+          # Closing strong marker:
+          array_shift($token_stack);
+          $span = array_shift($text_stack);
+          $span = $this->runSpanGamut($span);
+          $span = "<strong>$span</strong>";
+          $text_stack[0] .= $this->hashPart($span);
+          $strong = '';
+        } else
+        {
+          array_unshift($token_stack, $token);
+          array_unshift($text_stack, '');
+          $strong = $token;
+        }
+      } else
+      {
+        # Here $token_len == 1
+        if ($em)
+        {
+          if (strlen($token_stack[0]) == 1)
+          {
+            # Closing emphasis marker:
+            array_shift($token_stack);
+            $span = array_shift($text_stack);
+            $span = $this->runSpanGamut($span);
+            $span = "<em>$span</em>";
+            $text_stack[0] .= $this->hashPart($span);
+            $em = '';
+          } else
+          {
+            $text_stack[0] .= $token;
+          }
+        } else
+        {
+          array_unshift($token_stack, $token);
+          array_unshift($text_stack, '');
+          $em = $token;
+        }
+      }
+    }
+    return $text_stack[0];
+  }
+
+  protected function doBlockQuotes($text)
+  {
+    $text = preg_replace_callback('/
+			  (								# Wrap whole match in $1
+				(?>
+				  ^[ ]*>[ ]?			# ">" at the start of a line
+					.+\n					# rest of the first line
+				  (.+\n)*					# subsequent consecutive lines
+				  \n*						# blanks
+				)+
+			  )
+			/xm',
+    array(&$this, '_doBlockQuotes_callback'), $text);
+
+    return $text;
+  }
+
+  protected function _doBlockQuotes_callback($matches)
+  {
+    $bq = $matches[1];
+    # trim one level of quoting - trim whitespace-only lines
+    $bq = preg_replace('/^[ ]*>[ ]?|^[ ]+$/m', '', $bq);
+    $bq = $this->runBlockGamut($bq);  # recurse
+
+    $bq = preg_replace('/^/m', "  ", $bq);
+    # These leading spaces cause problem with <pre> content,
+    # so we need to fix that:
+    $bq = preg_replace_callback('{(\s*<pre>.+?</pre>)}sx',
+    array(&$this, '_doBlockQuotes_callback2'), $bq);
+
+    return "\n" . $this->hashBlock("<blockquote>\n$bq\n</blockquote>") . "\n\n";
+  }
+
+  protected function _doBlockQuotes_callback2($matches)
+  {
+    $pre = $matches[1];
+    $pre = preg_replace('/^  /m', '', $pre);
+    return $pre;
+  }
+
+  protected function formParagraphs($text)
+  {
+    #
+    #	Params:
+    #		$text - string to process with html <p> tags
+    #
+    # Strip leading and trailing lines:
+    $text = preg_replace('/\A\n+|\n+\z/', '', $text);
+
+    $grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
+
+    #
+    # Wrap <p> tags and unhashify HTML blocks
+    #
+    foreach ($grafs as $key => $value)
+    {
+      if (!preg_match('/^B\x1A[0-9]+B$/', $value))
+      {
+        # Is a paragraph.
+        $value = $this->runSpanGamut($value);
+        $value = preg_replace('/^([ ]*)/', "<p>", $value);
+        $value .= "</p>";
+        $grafs[$key] = $this->unhash($value);
+      } else
+      {
+        # Is a block.
+        # Modify elements of @grafs in-place...
+        $graf = $value;
+        $block = $this->html_hashes[$graf];
+        $graf = $block;
+//				if (preg_match('{
+//					\A
+//					(							# $1 = <div> tag
+//					  <div  \s+
+//					  [^>]*
+//					  \b
+//					  markdown\s*=\s*  ([\'"])	#	$2 = attr quote char
+//					  1
+//					  \2
+//					  [^>]*
+//					  >
+//					)
+//					(							# $3 = contents
+//					.*
+//					)
+//					(</div>)					# $4 = closing tag
+//					\z
+//					}xs', $block, $matches))
+//				{
+//					list(, $div_open, , $div_content, $div_close) = $matches;
+//
+//					# We can't call Markdown(), because that resets the hash;
+//					# that initialization code should be pulled into its own sub, though.
+//					$div_content = $this->hashHTMLBlocks($div_content);
+//					
+//					# Run document gamut methods on the content.
+//					foreach ($this->document_gamut as $method => $priority) {
+//						$div_content = $this->$method($div_content);
+//					}
+//
+//					$div_open = preg_replace(
+//						'{\smarkdown\s*=\s*([\'"]).+?\1}', '', $div_open);
+//
+//					$graf = $div_open . "\n" . $div_content . "\n" . $div_close;
+//				}
+        $grafs[$key] = $graf;
+      }
+    }
+
+    return implode("\n\n", $grafs);
+  }
+
+  protected function encodeAttribute($text)
+  {
+    #
+    # Encode text for a double-quoted HTML attribute. This function
+    # is *not* suitable for attributes enclosed in single quotes.
+    #
+    $text = $this->encodeAmpsAndAngles($text);
+    $text = str_replace('"', '&quot;', $text);
+    return $text;
+  }
+
+  protected function encodeAmpsAndAngles($text)
+  {
+    #
+    # Smart processing for ampersands and angle brackets that need to
+    # be encoded. Valid character entities are left alone unless the
+    # no-entities mode is set.
+    #
+    if ($this->no_entities)
+    {
+      $text = str_replace('&', '&amp;', $text);
+    } else
+    {
+      # Ampersand-encoding based entirely on Nat Irons's Amputator
+      # MT plugin: <http://bumppo.net/projects/amputator/>
+      $text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/',
+      '&amp;', $text);
+      ;
+    }
+    # Encode remaining <'s
+    $text = str_replace('<', '&lt;', $text);
+
+    return $text;
+  }
+
+  protected function doAutoLinks($text)
+  {
+    $text = preg_replace_callback('{<((https?|ftp|dict):[^\'">\s]+)>}i',
+    array(&$this, '_doAutoLinks_url_callback'), $text);
+
+    # Email addresses: <address@domain.foo>
+    $text = preg_replace_callback('{
+			<
+			(?:mailto:)?
+			(
+				(?:
+					[-!#$%&\'*+/=?^_`.{|}~\w\x80-\xFF]+
+				|
+					".*?"
+				)
+				\@
+				(?:
+					[-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+
+				|
+					\[[\d.a-fA-F:]+\]	# IPv4 & IPv6
+				)
+			)
+			>
+			}xi',
+    array(&$this, '_doAutoLinks_email_callback'), $text);
+
+    return $text;
+  }
+
+  protected function _doAutoLinks_url_callback($matches)
+  {
+    $url = $this->encodeAttribute($matches[1]);
+    $link = "<a href=\"$url\">$url</a>";
+    return $this->hashPart($link);
+  }
+
+  protected function _doAutoLinks_email_callback($matches)
+  {
+    $address = $matches[1];
+    $link = $this->encodeEmailAddress($address);
+    return $this->hashPart($link);
+  }
+
+  protected function encodeEmailAddress($addr)
+  {
+    #
+    #	Input: an email address, e.g. "foo@example.com"
+    #
+    #	Output: the email address as a mailto link, with each character
+    #		of the address encoded as either a decimal or hex entity, in
+    #		the hopes of foiling most address harvesting spam bots. E.g.:
+    #
+    #	  <p><a href="&#109;&#x61;&#105;&#x6c;&#116;&#x6f;&#58;&#x66;o&#111;
+    #        &#x40;&#101;&#x78;&#97;&#x6d;&#112;&#x6c;&#101;&#46;&#x63;&#111;
+    #        &#x6d;">&#x66;o&#111;&#x40;&#101;&#x78;&#97;&#x6d;&#112;&#x6c;
+    #        &#101;&#46;&#x63;&#111;&#x6d;</a></p>
+    #
+    #	Based by a filter by Matthew Wickline, posted to BBEdit-Talk.
+    #   With some optimizations by Milian Wolff.
+    #
+    $addr = "mailto:" . $addr;
+    $chars = preg_split('/(?<!^)(?!$)/', $addr);
+    $seed = (int) abs(crc32($addr) / strlen($addr)); # Deterministic seed.
+
+    foreach ($chars as $key => $char)
+    {
+      $ord = ord($char);
+      # Ignore non-ascii chars.
+      if ($ord < 128)
+      {
+        $r = ($seed * (1 + $key)) % 100; # Pseudo-random function.
+        # roughly 10% raw, 45% hex, 45% dec
+        # '@' *must* be encoded. I insist.
+        if ($r > 90 && $char != '@') /* do nothing
+
+          */;
+        else if ($r < 45)
+          $chars[$key] = '&#x' . dechex($ord) . ';';
+        else
+          $chars[$key] = '&#' . $ord . ';';
+      }
+    }
+
+    $addr = implode('', $chars);
+    $text = implode('', array_slice($chars, 7)); # text without `mailto:`
+    $addr = "<a href=\"$addr\">$text</a>";
+
+    return $addr;
+  }
+
+  protected function parseSpan($str)
+  {
+    #
+    # Take the string $str and parse it into tokens, hashing embeded HTML,
+    # escaped characters and handling code spans.
+    #
+    $output = '';
+
+    $span_re = '{
+				(
+					\\\\' . $this->escape_chars_re . '
+				|
+					(?<![`\\\\])
+					`+						# code span marker
+			' . ( $this->no_markup ? '' : '
+				|
+					<!--    .*?     -->		# comment
+				|
+					<\?.*?\?> | <%.*?%>		# processing instruction
+				|
+					<[/!$]?[-a-zA-Z0-9:_]+	# regular tags
+					(?>
+						\s
+						(?>[^"\'>]+|"[^"]*"|\'[^\']*\')*
+					)?
+					>
+			') . '
+				)
+				}xs';
+
+    while (1)
+    {
+      #
+      # Each loop iteration seach for either the next tag, the next
+      # openning code span marker, or the next escaped character.
+      # Each token is then passed to handleSpanToken.
+      #
+      $parts = preg_split($span_re, $str, 2, PREG_SPLIT_DELIM_CAPTURE);
+
+      # Create token from text preceding tag.
+      if ($parts[0] != "")
+      {
+        $output .= $parts[0];
+      }
+
+      # Check if we reach the end.
+      if (isset($parts[1]))
+      {
+        $output .= $this->handleSpanToken($parts[1], $parts[2]);
+        $str = $parts[2];
+      } else
+      {
+        break;
+      }
+    }
+
+    return $output;
+  }
+
+  protected function handleSpanToken($token, &$str)
+  {
+    #
+    # Handle $token provided by parseSpan by determining its nature and
+    # returning the corresponding value that should replace it.
+    #
+    switch ($token{0})
+    {
+      case "\\":
+        return $this->hashPart("&#" . ord($token{1}) . ";");
+      case "`":
+        # Search for end marker in remaining text.
+        if (preg_match('/^(.*?[^`])' . preg_quote($token) . '(?!`)(.*)$/sm',
+        $str, $matches))
+        {
+          $str = $matches[2];
+          $codespan = $this->makeCodeSpan($matches[1]);
+          return $this->hashPart($codespan);
+        }
+        return $token; // return as text since no ending marker found.
+      default:
+        return $this->hashPart($token);
+    }
+  }
+
+  protected function outdent($text)
+  {
+    #
+    # Remove one level of line-leading tabs or spaces
+    #
+    return preg_replace('/^(\t|[ ]{1,' . $this->tab_width . '})/m', '', $text);
+  }
+
+  protected function detab($text)
+  {
+    #
+    # Replace tabs with the appropriate amount of space.
+    #
+    # For each line we separate the line in blocks delemited by
+    # tab characters. Then we reconstruct every line by adding the
+    # appropriate number of space between each blocks.
+
+    $text = preg_replace_callback('/^.*\t.*$/m',
+    array(&$this, '_detab_callback'), $text);
+
+    return $text;
+  }
+
+  protected function _detab_callback($matches)
+  {
+    $line = $matches[0];
+    $strlen = $this->utf8_strlen; # strlen function for UTF-8.
+    # Split in blocks.
+    $blocks = explode("\t", $line);
+    # Add each blocks to the line.
+    $line = $blocks[0];
+    unset($blocks[0]); # Do not add first block twice.
+    foreach ($blocks as $block)
+    {
+      # Calculate amount of space, insert spaces, insert block.
+      $amount = $this->tab_width -
+      $strlen($line, 'UTF-8') % $this->tab_width;
+      $line .= str_repeat(" ", $amount) . $block;
+    }
+    return $line;
+  }
+
+  protected function _initDetab()
+  {
+    #
+    # Check for the availability of the function in the `utf8_strlen` property
+    # (initially `mb_strlen`). If the function is not available, create a
+    # function that will loosely count the number of UTF-8 characters with a
+    # regular expression.
+    #
+    if (function_exists($this->utf8_strlen))
+      return;
+    $this->utf8_strlen = create_function('$text', 'return preg_match_all(
+			"/[\\\\x00-\\\\xBF]|[\\\\xC0-\\\\xFF][\\\\x80-\\\\xBF]*/", 
+			$text, $m);');
+  }
+
+  protected function unhash($text)
+  {
+    #
+    # Swap back in all the tags hashed by _HashHTMLBlocks.
+    #
+    return preg_replace_callback('/(.)\x1A[0-9]+\1/',
+    array(&$this, '_unhash_callback'), $text);
+  }
+
+  protected function _unhash_callback($matches)
+  {
+    return $this->html_hashes[$matches[0]];
+  }
+
+}
\ No newline at end of file
diff --git a/vendor/parser/markdown.php b/vendor/parser/markdown.php
deleted file mode 100644
index dcd0223..0000000
--- a/vendor/parser/markdown.php
+++ /dev/null
@@ -1,1736 +0,0 @@
-<?php
-#
-# Markdown  -  A text-to-HTML conversion tool for web writers
-# 
-# PHP Markdown
-# Copyright (c) 2010 knplabs
-# <http://knplabs.com/>
-#
-# Based on Markdown
-# Copyright (c) 2004-2009 Michel Fortin  
-# <http://michelf.com/projects/php-markdown/>
-#
-# Original Markdown
-# Copyright (c) 2004-2006 John Gruber  
-# <http://daringfireball.net/projects/markdown/>
-#
-
-
-define( 'MARKDOWN_VERSION',  "1.0.1n" ); # Sat 10 Oct 2009
-
-
-#
-# Global default settings:
-#
-
-# Change to ">" for HTML output
-@define( 'MARKDOWN_EMPTY_ELEMENT_SUFFIX',  " />");
-
-# Define the width of a tab for code blocks.
-@define( 'MARKDOWN_TAB_WIDTH',     4 );
-
-
-#
-# WordPress settings:
-#
-
-# Change to false to remove Markdown from posts and/or comments.
-@define( 'MARKDOWN_WP_POSTS',      true );
-@define( 'MARKDOWN_WP_COMMENTS',   true );
-
-
-
-### Standard Function Interface ###
-
-@define( 'MARKDOWN_PARSER_CLASS',  'Markdown_Parser' );
-
-function Markdown($text) {
-#
-# Initialize the parser and return the result of its transform method.
-#
-	# Setup static parser variable.
-	static $parser;
-	if (!isset($parser)) {
-		$parser_class = MARKDOWN_PARSER_CLASS;
-		$parser = new $parser_class;
-	}
-
-	# Transform text using parser.
-	return $parser->transform($text);
-}
-
-
-### WordPress Plugin Interface ###
-
-/*
-Plugin Name: Markdown
-Plugin URI: http://michelf.com/projects/php-markdown/
-Description: <a href="http://daringfireball.net/projects/markdown/syntax">Markdown syntax</a> allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by <a href="http://daringfireball.net/">John Gruber</a>. <a href="http://michelf.com/projects/php-markdown/">More...</a>
-Version: 1.0.1n
-Author: Michel Fortin
-Author URI: http://michelf.com/
-*/
-
-if (isset($wp_version)) {
-	# More details about how it works here:
-	# <http://michelf.com/weblog/2005/wordpress-text-flow-vs-markdown/>
-	
-	# Post content and excerpts
-	# - Remove WordPress paragraph generator.
-	# - Run Markdown on excerpt, then remove all tags.
-	# - Add paragraph tag around the excerpt, but remove it for the excerpt rss.
-	if (MARKDOWN_WP_POSTS) {
-		remove_filter('the_content',     'wpautop');
-        remove_filter('the_content_rss', 'wpautop');
-		remove_filter('the_excerpt',     'wpautop');
-		add_filter('the_content',     'Markdown', 6);
-        add_filter('the_content_rss', 'Markdown', 6);
-		add_filter('get_the_excerpt', 'Markdown', 6);
-		add_filter('get_the_excerpt', 'trim', 7);
-		add_filter('the_excerpt',     'mdwp_add_p');
-		add_filter('the_excerpt_rss', 'mdwp_strip_p');
-		
-		remove_filter('content_save_pre',  'balanceTags', 50);
-		remove_filter('excerpt_save_pre',  'balanceTags', 50);
-		add_filter('the_content',  	  'balanceTags', 50);
-		add_filter('get_the_excerpt', 'balanceTags', 9);
-	}
-	
-	# Comments
-	# - Remove WordPress paragraph generator.
-	# - Remove WordPress auto-link generator.
-	# - Scramble important tags before passing them to the kses filter.
-	# - Run Markdown on excerpt then remove paragraph tags.
-	if (MARKDOWN_WP_COMMENTS) {
-		remove_filter('comment_text', 'wpautop', 30);
-		remove_filter('comment_text', 'make_clickable');
-		add_filter('pre_comment_content', 'Markdown', 6);
-		add_filter('pre_comment_content', 'mdwp_hide_tags', 8);
-		add_filter('pre_comment_content', 'mdwp_show_tags', 12);
-		add_filter('get_comment_text',    'Markdown', 6);
-		add_filter('get_comment_excerpt', 'Markdown', 6);
-		add_filter('get_comment_excerpt', 'mdwp_strip_p', 7);
-	
-		global $mdwp_hidden_tags, $mdwp_placeholders;
-		$mdwp_hidden_tags = explode(' ',
-			'<p> </p> <pre> </pre> <ol> </ol> <ul> </ul> <li> </li>');
-		$mdwp_placeholders = explode(' ', str_rot13(
-			'pEj07ZbbBZ U1kqgh4w4p pre2zmeN6K QTi31t9pre ol0MP1jzJR '.
-			'ML5IjmbRol ulANi1NsGY J7zRLJqPul liA8ctl16T K9nhooUHli'));
-	}
-	
-	function mdwp_add_p($text) {
-		if (!preg_match('{^$|^<(p|ul|ol|dl|pre|blockquote)>}i', $text)) {
-			$text = '<p>'.$text.'</p>';
-			$text = preg_replace('{\n{2,}}', "</p>\n\n<p>", $text);
-		}
-		return $text;
-	}
-	
-	function mdwp_strip_p($t) { return preg_replace('{</?p>}i', '', $t); }
-
-	function mdwp_hide_tags($text) {
-		global $mdwp_hidden_tags, $mdwp_placeholders;
-		return str_replace($mdwp_hidden_tags, $mdwp_placeholders, $text);
-	}
-	function mdwp_show_tags($text) {
-		global $mdwp_hidden_tags, $mdwp_placeholders;
-		return str_replace($mdwp_placeholders, $mdwp_hidden_tags, $text);
-	}
-}
-
-
-### bBlog Plugin Info ###
-
-function identify_modifier_markdown() {
-	return array(
-		'name'			=> 'markdown',
-		'type'			=> 'modifier',
-		'nicename'		=> 'Markdown',
-		'description'	=> 'A text-to-HTML conversion tool for web writers',
-		'authors'		=> 'Michel Fortin and John Gruber',
-		'licence'		=> 'BSD-like',
-		'version'		=> MARKDOWN_VERSION,
-		'help'			=> '<a href="http://daringfireball.net/projects/markdown/syntax">Markdown syntax</a> allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by <a href="http://daringfireball.net/">John Gruber</a>. <a href="http://michelf.com/projects/php-markdown/">More...</a>'
-	);
-}
-
-
-### Smarty Modifier Interface ###
-
-function smarty_modifier_markdown($text) {
-	return Markdown($text);
-}
-
-
-### Textile Compatibility Mode ###
-
-# Rename this file to "classTextile.php" and it can replace Textile everywhere.
-
-if (strcasecmp(substr(__FILE__, -16), "classTextile.php") == 0) {
-	# Try to include PHP SmartyPants. Should be in the same directory.
-	@include_once 'smartypants.php';
-	# Fake Textile class. It calls Markdown instead.
-	class Textile {
-		function TextileThis($text, $lite='', $encode='') {
-			if ($lite == '' && $encode == '')    $text = Markdown($text);
-			if (function_exists('SmartyPants'))  $text = SmartyPants($text);
-			return $text;
-		}
-		# Fake restricted version: restrictions are not supported for now.
-		function TextileRestricted($text, $lite='', $noimage='') {
-			return $this->TextileThis($text, $lite);
-		}
-		# Workaround to ensure compatibility with TextPattern 4.0.3.
-		function blockLite($text) { return $text; }
-	}
-}
-
-
-
-#
-# Markdown Parser Class
-#
-
-class Markdown_Parser {
-
-	# Regex to match balanced [brackets].
-	# Needed to insert a maximum bracked depth while converting to PHP.
-	var $nested_brackets_depth = 6;
-	var $nested_brackets_re;
-	
-	var $nested_url_parenthesis_depth = 4;
-	var $nested_url_parenthesis_re;
-
-	# Table of hash values for escaped characters:
-	var $escape_chars = '\`*_{}[]()>#+-.!';
-	var $escape_chars_re;
-
-	# Change to ">" for HTML output.
-	var $empty_element_suffix = MARKDOWN_EMPTY_ELEMENT_SUFFIX;
-	var $tab_width = MARKDOWN_TAB_WIDTH;
-	
-	# Change to `true` to disallow markup or entities.
-	var $no_markup = false;
-	var $no_entities = false;
-	
-	# Predefined urls and titles for reference links and images.
-	var $predef_urls = array();
-	var $predef_titles = array();
-
-
-	function Markdown_Parser() {
-	#
-	# Constructor function. Initialize appropriate member variables.
-	#
-		$this->_initDetab();
-		$this->prepareItalicsAndBold();
-	
-		$this->nested_brackets_re = 
-			str_repeat('(?>[^\[\]]+|\[', $this->nested_brackets_depth).
-			str_repeat('\])*', $this->nested_brackets_depth);
-	
-		$this->nested_url_parenthesis_re = 
-			str_repeat('(?>[^()\s]+|\(', $this->nested_url_parenthesis_depth).
-			str_repeat('(?>\)))*', $this->nested_url_parenthesis_depth);
-		
-		$this->escape_chars_re = '['.preg_quote($this->escape_chars).']';
-		
-		# Sort document, block, and span gamut in ascendent priority order.
-		asort($this->document_gamut);
-		asort($this->block_gamut);
-		asort($this->span_gamut);
-	}
-
-
-	# Internal hashes used during transformation.
-	var $urls = array();
-	var $titles = array();
-	var $html_hashes = array();
-	
-	# Status flag to avoid invalid nesting.
-	var $in_anchor = false;
-	
-	
-	function setup() {
-	#
-	# Called before the transformation process starts to setup parser 
-	# states.
-	#
-		# Clear global hashes.
-		$this->urls = $this->predef_urls;
-		$this->titles = $this->predef_titles;
-		$this->html_hashes = array();
-		
-		$in_anchor = false;
-	}
-	
-	function teardown() {
-	#
-	# Called after the transformation process to clear any variable 
-	# which may be taking up memory unnecessarly.
-	#
-		$this->urls = array();
-		$this->titles = array();
-		$this->html_hashes = array();
-	}
-
-
-	function transform($text) {
-	#
-	# Main function. Performs some preprocessing on the input text
-	# and pass it through the document gamut.
-	#
-		$this->setup();
-	
-		# Remove UTF-8 BOM and marker character in input, if present.
-		$text = preg_replace('{^\xEF\xBB\xBF|\x1A}', '', $text);
-
-		# Standardize line endings:
-		#   DOS to Unix and Mac to Unix
-		$text = preg_replace('{\r\n?}', "\n", $text);
-
-		# Make sure $text ends with a couple of newlines:
-		$text .= "\n\n";
-
-		# Convert all tabs to spaces.
-		$text = $this->detab($text);
-
-		# Turn block-level HTML blocks into hash entries
-		$text = $this->hashHTMLBlocks($text);
-
-		# Strip any lines consisting only of spaces and tabs.
-		# This makes subsequent regexen easier to write, because we can
-		# match consecutive blank lines with /\n+/ instead of something
-		# contorted like /[ ]*\n+/ .
-		$text = preg_replace('/^[ ]+$/m', '', $text);
-
-		# Run document gamut methods.
-		foreach ($this->document_gamut as $method => $priority) {
-			$text = $this->$method($text);
-		}
-		
-		$this->teardown();
-
-		return $text . "\n";
-	}
-	
-	var $document_gamut = array(
-		# Strip link definitions, store in hashes.
-		"stripLinkDefinitions" => 20,
-		
-		"runBasicBlockGamut"   => 30,
-		);
-
-
-	function stripLinkDefinitions($text) {
-	#
-	# Strips link definitions from text, stores the URLs and titles in
-	# hash references.
-	#
-		$less_than_tab = $this->tab_width - 1;
-
-		# Link defs are in the form: ^[id]: url "optional title"
-		$text = preg_replace_callback('{
-							^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?:	# id = $1
-							  [ ]*
-							  \n?				# maybe *one* newline
-							  [ ]*
-							(?:
-							  <(.+?)>			# url = $2
-							|
-							  (\S+?)			# url = $3
-							)
-							  [ ]*
-							  \n?				# maybe one newline
-							  [ ]*
-							(?:
-								(?<=\s)			# lookbehind for whitespace
-								["(]
-								(.*?)			# title = $4
-								[")]
-								[ ]*
-							)?	# title is optional
-							(?:\n+|\Z)
-			}xm',
-			array(&$this, '_stripLinkDefinitions_callback'),
-			$text);
-		return $text;
-	}
-	function _stripLinkDefinitions_callback($matches) {
-		$link_id = strtolower($matches[1]);
-		$url = $matches[2] == '' ? $matches[3] : $matches[2];
-		$this->urls[$link_id] = $url;
-		$this->titles[$link_id] =& $matches[4];
-		return ''; # String that will replace the block
-	}
-
-
-	function hashHTMLBlocks($text) {
-		if ($this->no_markup)  return $text;
-
-		$less_than_tab = $this->tab_width - 1;
-
-		# Hashify HTML blocks:
-		# We only want to do this for block-level HTML tags, such as headers,
-		# lists, and tables. That's because we still want to wrap <p>s around
-		# "paragraphs" that are wrapped in non-block-level tags, such as anchors,
-		# phrase emphasis, and spans. The list of tags we're looking for is
-		# hard-coded:
-		#
-		# *  List "a" is made of tags which can be both inline or block-level.
-		#    These will be treated block-level when the start tag is alone on 
-		#    its line, otherwise they're not matched here and will be taken as 
-		#    inline later.
-		# *  List "b" is made of tags which are always block-level;
-		#
-		$block_tags_a_re = 'ins|del';
-		$block_tags_b_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|'.
-						   'script|noscript|form|fieldset|iframe|math';
-
-		# Regular expression for the content of a block tag.
-		$nested_tags_level = 4;
-		$attr = '
-			(?>				# optional tag attributes
-			  \s			# starts with whitespace
-			  (?>
-				[^>"/]+		# text outside quotes
-			  |
-				/+(?!>)		# slash not followed by ">"
-			  |
-				"[^"]*"		# text inside double quotes (tolerate ">")
-			  |
-				\'[^\']*\'	# text inside single quotes (tolerate ">")
-			  )*
-			)?	
-			';
-		$content =
-			str_repeat('
-				(?>
-				  [^<]+			# content without tag
-				|
-				  <\2			# nested opening tag
-					'.$attr.'	# attributes
-					(?>
-					  />
-					|
-					  >', $nested_tags_level).	# end of opening tag
-					  '.*?'.					# last level nested tag content
-			str_repeat('
-					  </\2\s*>	# closing nested tag
-					)
-				  |				
-					<(?!/\2\s*>	# other tags with a different name
-				  )
-				)*',
-				$nested_tags_level);
-		$content2 = str_replace('\2', '\3', $content);
-
-		# First, look for nested blocks, e.g.:
-		# 	<div>
-		# 		<div>
-		# 		tags for inner block must be indented.
-		# 		</div>
-		# 	</div>
-		#
-		# The outermost tags must start at the left margin for this to match, and
-		# the inner nested divs must be indented.
-		# We need to do this before the next, more liberal match, because the next
-		# match will start at the first `<div>` and stop at the first `</div>`.
-		$text = preg_replace_callback('{(?>
-			(?>
-				(?<=\n\n)		# Starting after a blank line
-				|				# or
-				\A\n?			# the beginning of the doc
-			)
-			(						# save in $1
-
-			  # Match from `\n<tag>` to `</tag>\n`, handling nested tags 
-			  # in between.
-					
-						[ ]{0,'.$less_than_tab.'}
-						<('.$block_tags_b_re.')# start tag = $2
-						'.$attr.'>			# attributes followed by > and \n
-						'.$content.'		# content, support nesting
-						</\2>				# the matching end tag
-						[ ]*				# trailing spaces/tabs
-						(?=\n+|\Z)	# followed by a newline or end of document
-
-			| # Special version for tags of group a.
-
-						[ ]{0,'.$less_than_tab.'}
-						<('.$block_tags_a_re.')# start tag = $3
-						'.$attr.'>[ ]*\n	# attributes followed by >
-						'.$content2.'		# content, support nesting
-						</\3>				# the matching end tag
-						[ ]*				# trailing spaces/tabs
-						(?=\n+|\Z)	# followed by a newline or end of document
-					
-			| # Special case just for <hr />. It was easier to make a special 
-			  # case than to make the other regex more complicated.
-			
-						[ ]{0,'.$less_than_tab.'}
-						<(hr)				# start tag = $2
-						'.$attr.'			# attributes
-						/?>					# the matching end tag
-						[ ]*
-						(?=\n{2,}|\Z)		# followed by a blank line or end of document
-			
-			| # Special case for standalone HTML comments:
-			
-					[ ]{0,'.$less_than_tab.'}
-					(?s:
-						<!-- .*? -->
-					)
-					[ ]*
-					(?=\n{2,}|\Z)		# followed by a blank line or end of document
-			
-			| # PHP and ASP-style processor instructions (<? and <%)
-			
-					[ ]{0,'.$less_than_tab.'}
-					(?s:
-						<([?%])			# $2
-						.*?
-						\2>
-					)
-					[ ]*
-					(?=\n{2,}|\Z)		# followed by a blank line or end of document
-					
-			)
-			)}Sxmi',
-			array(&$this, '_hashHTMLBlocks_callback'),
-			$text);
-
-		return $text;
-	}
-	function _hashHTMLBlocks_callback($matches) {
-		$text = $matches[1];
-		$key  = $this->hashBlock($text);
-		return "\n\n$key\n\n";
-	}
-	
-	
-	function hashPart($text, $boundary = 'X') {
-	#
-	# Called whenever a tag must be hashed when a function insert an atomic 
-	# element in the text stream. Passing $text to through this function gives
-	# a unique text-token which will be reverted back when calling unhash.
-	#
-	# The $boundary argument specify what character should be used to surround
-	# the token. By convension, "B" is used for block elements that needs not
-	# to be wrapped into paragraph tags at the end, ":" is used for elements
-	# that are word separators and "X" is used in the general case.
-	#
-		# Swap back any tag hash found in $text so we do not have to `unhash`
-		# multiple times at the end.
-		$text = $this->unhash($text);
-		
-		# Then hash the block.
-		static $i = 0;
-		$key = "$boundary\x1A" . ++$i . $boundary;
-		$this->html_hashes[$key] = $text;
-		return $key; # String that will replace the tag.
-	}
-
-
-	function hashBlock($text) {
-	#
-	# Shortcut function for hashPart with block-level boundaries.
-	#
-		return $this->hashPart($text, 'B');
-	}
-
-
-	var $block_gamut = array(
-	#
-	# These are all the transformations that form block-level
-	# tags like paragraphs, headers, and list items.
-	#
-		"doHeaders"         => 10,
-		"doHorizontalRules" => 20,
-		
-		"doLists"           => 40,
-		"doCodeBlocks"      => 50,
-		"doBlockQuotes"     => 60,
-		);
-
-	function runBlockGamut($text) {
-	#
-	# Run block gamut tranformations.
-	#
-		# We need to escape raw HTML in Markdown source before doing anything 
-		# else. This need to be done for each block, and not only at the 
-		# begining in the Markdown function since hashed blocks can be part of
-		# list items and could have been indented. Indented blocks would have 
-		# been seen as a code block in a previous pass of hashHTMLBlocks.
-		$text = $this->hashHTMLBlocks($text);
-		
-		return $this->runBasicBlockGamut($text);
-	}
-	
-	function runBasicBlockGamut($text) {
-	#
-	# Run block gamut tranformations, without hashing HTML blocks. This is 
-	# useful when HTML blocks are known to be already hashed, like in the first
-	# whole-document pass.
-	#
-		foreach ($this->block_gamut as $method => $priority) {
-			$text = $this->$method($text);
-		}
-		
-		# Finally form paragraph and restore hashed blocks.
-		$text = $this->formParagraphs($text);
-
-		return $text;
-	}
-	
-	
-	function doHorizontalRules($text) {
-		# Do Horizontal Rules:
-		return preg_replace(
-			'{
-				^[ ]{0,3}	# Leading space
-				([-*_])		# $1: First marker
-				(?>			# Repeated marker group
-					[ ]{0,2}	# Zero, one, or two spaces.
-					\1			# Marker character
-				){2,}		# Group repeated at least twice
-				[ ]*		# Tailing spaces
-				$			# End of line.
-			}mx',
-			"\n".$this->hashBlock("<hr$this->empty_element_suffix")."\n", 
-			$text);
-	}
-
-
-	var $span_gamut = array(
-	#
-	# These are all the transformations that occur *within* block-level
-	# tags like paragraphs, headers, and list items.
-	#
-		# Process character escapes, code spans, and inline HTML
-		# in one shot.
-		"parseSpan"           => -30,
-
-		# Process anchor and image tags. Images must come first,
-		# because ![foo][f] looks like an anchor.
-		"doImages"            =>  10,
-		"doAnchors"           =>  20,
-		
-		# Make links out of things like `<http://example.com/>`
-		# Must come after doAnchors, because you can use < and >
-		# delimiters in inline links like [this](<url>).
-		"doAutoLinks"         =>  30,
-		"encodeAmpsAndAngles" =>  40,
-
-		"doItalicsAndBold"    =>  50,
-		"doHardBreaks"        =>  60,
-		);
-
-	function runSpanGamut($text) {
-	#
-	# Run span gamut tranformations.
-	#
-		foreach ($this->span_gamut as $method => $priority) {
-			$text = $this->$method($text);
-		}
-
-		return $text;
-	}
-	
-	
-	function doHardBreaks($text) {
-		# Do hard breaks:
-		return preg_replace_callback('/ {2,}\n/', 
-			array(&$this, '_doHardBreaks_callback'), $text);
-	}
-	function _doHardBreaks_callback($matches) {
-		return $this->hashPart("<br$this->empty_element_suffix\n");
-	}
-
-
-	function doAnchors($text) {
-	#
-	# Turn Markdown link shortcuts into XHTML <a> tags.
-	#
-		if ($this->in_anchor) return $text;
-		$this->in_anchor = true;
-		
-		#
-		# First, handle reference-style links: [link text] [id]
-		#
-		$text = preg_replace_callback('{
-			(					# wrap whole match in $1
-			  \[
-				('.$this->nested_brackets_re.')	# link text = $2
-			  \]
-
-			  [ ]?				# one optional space
-			  (?:\n[ ]*)?		# one optional newline followed by spaces
-
-			  \[
-				(.*?)		# id = $3
-			  \]
-			)
-			}xs',
-			array(&$this, '_doAnchors_reference_callback'), $text);
-
-		#
-		# Next, inline-style links: [link text](url "optional title")
-		#
-		$text = preg_replace_callback('{
-			(				# wrap whole match in $1
-			  \[
-				('.$this->nested_brackets_re.')	# link text = $2
-			  \]
-			  \(			# literal paren
-				[ \n]*
-				(?:
-					<(.+?)>	# href = $3
-				|
-					('.$this->nested_url_parenthesis_re.')	# href = $4
-				)
-				[ \n]*
-				(			# $5
-				  ([\'"])	# quote char = $6
-				  (.*?)		# Title = $7
-				  \6		# matching quote
-				  [ \n]*	# ignore any spaces/tabs between closing quote and )
-				)?			# title is optional
-			  \)
-			)
-			}xs',
-			array(&$this, '_doAnchors_inline_callback'), $text);
-
-		#
-		# Last, handle reference-style shortcuts: [link text]
-		# These must come last in case you've also got [link text][1]
-		# or [link text](/foo)
-		#
-		$text = preg_replace_callback('{
-			(					# wrap whole match in $1
-			  \[
-				([^\[\]]+)		# link text = $2; can\'t contain [ or ]
-			  \]
-			)
-			}xs',
-			array(&$this, '_doAnchors_reference_callback'), $text);
-
-		$this->in_anchor = false;
-		return $text;
-	}
-	function _doAnchors_reference_callback($matches) {
-		$whole_match =  $matches[1];
-		$link_text   =  $matches[2];
-		$link_id     =& $matches[3];
-
-		if ($link_id == "") {
-			# for shortcut links like [this][] or [this].
-			$link_id = $link_text;
-		}
-		
-		# lower-case and turn embedded newlines into spaces
-		$link_id = strtolower($link_id);
-		$link_id = preg_replace('{[ ]?\n}', ' ', $link_id);
-
-		if (isset($this->urls[$link_id])) {
-			$url = $this->urls[$link_id];
-			$url = $this->encodeAttribute($url);
-			
-			$result = "<a href=\"$url\"";
-			if ( isset( $this->titles[$link_id] ) ) {
-				$title = $this->titles[$link_id];
-				$title = $this->encodeAttribute($title);
-				$result .=  " title=\"$title\"";
-			}
-		
-			$link_text = $this->runSpanGamut($link_text);
-			$result .= ">$link_text</a>";
-			$result = $this->hashPart($result);
-		}
-		else {
-			$result = $whole_match;
-		}
-		return $result;
-	}
-	function _doAnchors_inline_callback($matches) {
-		$whole_match	=  $matches[1];
-		$link_text		=  $this->runSpanGamut($matches[2]);
-		$url			=  $matches[3] == '' ? $matches[4] : $matches[3];
-		$title			=& $matches[7];
-
-		$url = $this->encodeAttribute($url);
-
-		$result = "<a href=\"$url\"";
-		if (isset($title)) {
-			$title = $this->encodeAttribute($title);
-			$result .=  " title=\"$title\"";
-		}
-		
-		$link_text = $this->runSpanGamut($link_text);
-		$result .= ">$link_text</a>";
-
-		return $this->hashPart($result);
-	}
-
-
-	function doImages($text) {
-	#
-	# Turn Markdown image shortcuts into <img> tags.
-	#
-		#
-		# First, handle reference-style labeled images: ![alt text][id]
-		#
-		$text = preg_replace_callback('{
-			(				# wrap whole match in $1
-			  !\[
-				('.$this->nested_brackets_re.')		# alt text = $2
-			  \]
-
-			  [ ]?				# one optional space
-			  (?:\n[ ]*)?		# one optional newline followed by spaces
-
-			  \[
-				(.*?)		# id = $3
-			  \]
-
-			)
-			}xs', 
-			array(&$this, '_doImages_reference_callback'), $text);
-
-		#
-		# Next, handle inline images:  ![alt text](url "optional title")
-		# Don't forget: encode * and _
-		#
-		$text = preg_replace_callback('{
-			(				# wrap whole match in $1
-			  !\[
-				('.$this->nested_brackets_re.')		# alt text = $2
-			  \]
-			  \s?			# One optional whitespace character
-			  \(			# literal paren
-				[ \n]*
-				(?:
-					<(\S*)>	# src url = $3
-				|
-					('.$this->nested_url_parenthesis_re.')	# src url = $4
-				)
-				[ \n]*
-				(			# $5
-				  ([\'"])	# quote char = $6
-				  (.*?)		# title = $7
-				  \6		# matching quote
-				  [ \n]*
-				)?			# title is optional
-			  \)
-			)
-			}xs',
-			array(&$this, '_doImages_inline_callback'), $text);
-
-		return $text;
-	}
-	function _doImages_reference_callback($matches) {
-		$whole_match = $matches[1];
-		$alt_text    = $matches[2];
-		$link_id     = strtolower($matches[3]);
-
-		if ($link_id == "") {
-			$link_id = strtolower($alt_text); # for shortcut links like ![this][].
-		}
-
-		$alt_text = $this->encodeAttribute($alt_text);
-		if (isset($this->urls[$link_id])) {
-			$url = $this->encodeAttribute($this->urls[$link_id]);
-			$result = "<img src=\"$url\" alt=\"$alt_text\"";
-			if (isset($this->titles[$link_id])) {
-				$title = $this->titles[$link_id];
-				$title = $this->encodeAttribute($title);
-				$result .=  " title=\"$title\"";
-			}
-			$result .= $this->empty_element_suffix;
-			$result = $this->hashPart($result);
-		}
-		else {
-			# If there's no such link ID, leave intact:
-			$result = $whole_match;
-		}
-
-		return $result;
-	}
-	function _doImages_inline_callback($matches) {
-		$whole_match	= $matches[1];
-		$alt_text		= $matches[2];
-		$url			= $matches[3] == '' ? $matches[4] : $matches[3];
-		$title			=& $matches[7];
-
-		$alt_text = $this->encodeAttribute($alt_text);
-		$url = $this->encodeAttribute($url);
-		$result = "<img src=\"$url\" alt=\"$alt_text\"";
-		if (isset($title)) {
-			$title = $this->encodeAttribute($title);
-			$result .=  " title=\"$title\""; # $title already quoted
-		}
-		$result .= $this->empty_element_suffix;
-
-		return $this->hashPart($result);
-	}
-
-
-	function doHeaders($text) {
-		# Setext-style headers:
-		#	  Header 1
-		#	  ========
-		#  
-		#	  Header 2
-		#	  --------
-		#
-		$text = preg_replace_callback('{ ^(.+?)[ ]*\n(=+|-+)[ ]*\n+ }mx',
-			array(&$this, '_doHeaders_callback_setext'), $text);
-
-		# atx-style headers:
-		#	# Header 1
-		#	## Header 2
-		#	## Header 2 with closing hashes ##
-		#	...
-		#	###### Header 6
-		#
-		$text = preg_replace_callback('{
-				^(\#{1,6})	# $1 = string of #\'s
-				[ ]*
-				(.+?)		# $2 = Header text
-				[ ]*
-				\#*			# optional closing #\'s (not counted)
-				\n+
-			}xm',
-			array(&$this, '_doHeaders_callback_atx'), $text);
-
-		return $text;
-	}
-	function _doHeaders_callback_setext($matches) {
-		# Terrible hack to check we haven't found an empty list item.
-		if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1]))
-			return $matches[0];
-		
-		$level = $matches[2]{0} == '=' ? 1 : 2;
-		$block = "<h$level>".$this->runSpanGamut($matches[1])."</h$level>";
-		return "\n" . $this->hashBlock($block) . "\n\n";
-	}
-	function _doHeaders_callback_atx($matches) {
-		$level = strlen($matches[1]);
-		$block = "<h$level>".$this->runSpanGamut($matches[2])."</h$level>";
-		return "\n" . $this->hashBlock($block) . "\n\n";
-	}
-
-
-	function doLists($text) {
-	#
-	# Form HTML ordered (numbered) and unordered (bulleted) lists.
-	#
-		$less_than_tab = $this->tab_width - 1;
-
-		# Re-usable patterns to match list item bullets and number markers:
-		$marker_ul_re  = '[*+-]';
-		$marker_ol_re  = '\d+[.]';
-		$marker_any_re = "(?:$marker_ul_re|$marker_ol_re)";
-
-		$markers_relist = array(
-			$marker_ul_re => $marker_ol_re,
-			$marker_ol_re => $marker_ul_re,
-			);
-
-		foreach ($markers_relist as $marker_re => $other_marker_re) {
-			# Re-usable pattern to match any entirel ul or ol list:
-			$whole_list_re = '
-				(								# $1 = whole list
-				  (								# $2
-					([ ]{0,'.$less_than_tab.'})	# $3 = number of spaces
-					('.$marker_re.')			# $4 = first list item marker
-					[ ]+
-				  )
-				  (?s:.+?)
-				  (								# $5
-					  \z
-					|
-					  \n{2,}
-					  (?=\S)
-					  (?!						# Negative lookahead for another list item marker
-						[ ]*
-						'.$marker_re.'[ ]+
-					  )
-					|
-					  (?=						# Lookahead for another kind of list
-					    \n
-						\3						# Must have the same indentation
-						'.$other_marker_re.'[ ]+
-					  )
-				  )
-				)
-			'; // mx
-			
-			# We use a different prefix before nested lists than top-level lists.
-			# See extended comment in _ProcessListItems().
-		
-			if ($this->list_level) {
-				$text = preg_replace_callback('{
-						^
-						'.$whole_list_re.'
-					}mx',
-					array(&$this, '_doLists_callback'), $text);
-			}
-			else {
-				$text = preg_replace_callback('{
-						(?:(?<=\n)\n|\A\n?) # Must eat the newline
-						'.$whole_list_re.'
-					}mx',
-					array(&$this, '_doLists_callback'), $text);
-			}
-		}
-
-		return $text;
-	}
-	function _doLists_callback($matches) {
-		# Re-usable patterns to match list item bullets and number markers:
-		$marker_ul_re  = '[*+-]';
-		$marker_ol_re  = '\d+[.]';
-		$marker_any_re = "(?:$marker_ul_re|$marker_ol_re)";
-		
-		$list = $matches[1];
-		$list_type = preg_match("/$marker_ul_re/", $matches[4]) ? "ul" : "ol";
-		
-		$marker_any_re = ( $list_type == "ul" ? $marker_ul_re : $marker_ol_re );
-		
-		$list .= "\n";
-		$result = $this->processListItems($list, $marker_any_re);
-		
-		$result = $this->hashBlock("<$list_type>\n" . $result . "</$list_type>");
-		return "\n". $result ."\n\n";
-	}
-
-	var $list_level = 0;
-
-	function processListItems($list_str, $marker_any_re) {
-	#
-	#	Process the contents of a single ordered or unordered list, splitting it
-	#	into individual list items.
-	#
-		# The $this->list_level global keeps track of when we're inside a list.
-		# Each time we enter a list, we increment it; when we leave a list,
-		# we decrement. If it's zero, we're not in a list anymore.
-		#
-		# We do this because when we're not inside a list, we want to treat
-		# something like this:
-		#
-		#		I recommend upgrading to version
-		#		8. Oops, now this line is treated
-		#		as a sub-list.
-		#
-		# As a single paragraph, despite the fact that the second line starts
-		# with a digit-period-space sequence.
-		#
-		# Whereas when we're inside a list (or sub-list), that line will be
-		# treated as the start of a sub-list. What a kludge, huh? This is
-		# an aspect of Markdown's syntax that's hard to parse perfectly
-		# without resorting to mind-reading. Perhaps the solution is to
-		# change the syntax rules such that sub-lists must start with a
-		# starting cardinal number; e.g. "1." or "a.".
-		
-		$this->list_level++;
-
-		# trim trailing blank lines:
-		$list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
-
-		$list_str = preg_replace_callback('{
-			(\n)?							# leading line = $1
-			(^[ ]*)							# leading whitespace = $2
-			('.$marker_any_re.'				# list marker and space = $3
-				(?:[ ]+|(?=\n))	# space only required if item is not empty
-			)
-			((?s:.*?))						# list item text   = $4
-			(?:(\n+(?=\n))|\n)				# tailing blank line = $5
-			(?= \n* (\z | \2 ('.$marker_any_re.') (?:[ ]+|(?=\n))))
-			}xm',
-			array(&$this, '_processListItems_callback'), $list_str);
-
-		$this->list_level--;
-		return $list_str;
-	}
-	function _processListItems_callback($matches) {
-		$item = $matches[4];
-		$leading_line =& $matches[1];
-		$leading_space =& $matches[2];
-		$marker_space = $matches[3];
-		$tailing_blank_line =& $matches[5];
-
-		if ($leading_line || $tailing_blank_line || 
-			preg_match('/\n{2,}/', $item))
-		{
-			# Replace marker with the appropriate whitespace indentation
-			$item = $leading_space . str_repeat(' ', strlen($marker_space)) . $item;
-			$item = $this->runBlockGamut($this->outdent($item)."\n");
-		}
-		else {
-			# Recursion for sub-lists:
-			$item = $this->doLists($this->outdent($item));
-			$item = preg_replace('/\n+$/', '', $item);
-			$item = $this->runSpanGamut($item);
-		}
-
-		return "<li>" . $item . "</li>\n";
-	}
-
-
-	function doCodeBlocks($text) {
-	#
-	#	Process Markdown `<pre><code>` blocks.
-	#
-		$text = preg_replace_callback('{
-				(?:\n\n|\A\n?)
-				(	            # $1 = the code block -- one or more lines, starting with a space/tab
-				  (?>
-					[ ]{'.$this->tab_width.'}  # Lines must start with a tab or a tab-width of spaces
-					.*\n+
-				  )+
-				)
-				((?=^[ ]{0,'.$this->tab_width.'}\S)|\Z)	# Lookahead for non-space at line-start, or end of doc
-			}xm',
-			array(&$this, '_doCodeBlocks_callback'), $text);
-
-		return $text;
-	}
-	function _doCodeBlocks_callback($matches) {
-		$codeblock = $matches[1];
-
-		$codeblock = $this->outdent($codeblock);
-		$codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
-
-		# trim leading newlines and trailing newlines
-		$codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock);
-
-		$codeblock = "<pre><code>$codeblock\n</code></pre>";
-		return "\n\n".$this->hashBlock($codeblock)."\n\n";
-	}
-
-
-	function makeCodeSpan($code) {
-	#
-	# Create a code span markup for $code. Called from handleSpanToken.
-	#
-		$code = htmlspecialchars(trim($code), ENT_NOQUOTES);
-		return $this->hashPart("<code>$code</code>");
-	}
-
-
-	var $em_relist = array(
-		''  => '(?:(?<!\*)\*(?!\*)|(?<!_)_(?!_))(?=\S|$)(?![.,:;]\s)',
-		'*' => '(?<=\S|^)(?<!\*)\*(?!\*)',
-		'_' => '(?<=\S|^)(?<!_)_(?!_)',
-		);
-	var $strong_relist = array(
-		''   => '(?:(?<!\*)\*\*(?!\*)|(?<!_)__(?!_))(?=\S|$)(?![.,:;]\s)',
-		'**' => '(?<=\S|^)(?<!\*)\*\*(?!\*)',
-		'__' => '(?<=\S|^)(?<!_)__(?!_)',
-		);
-	var $em_strong_relist = array(
-		''    => '(?:(?<!\*)\*\*\*(?!\*)|(?<!_)___(?!_))(?=\S|$)(?![.,:;]\s)',
-		'***' => '(?<=\S|^)(?<!\*)\*\*\*(?!\*)',
-		'___' => '(?<=\S|^)(?<!_)___(?!_)',
-		);
-	var $em_strong_prepared_relist;
-	
-	function prepareItalicsAndBold() {
-	#
-	# Prepare regular expressions for searching emphasis tokens in any
-	# context.
-	#
-		foreach ($this->em_relist as $em => $em_re) {
-			foreach ($this->strong_relist as $strong => $strong_re) {
-				# Construct list of allowed token expressions.
-				$token_relist = array();
-				if (isset($this->em_strong_relist["$em$strong"])) {
-					$token_relist[] = $this->em_strong_relist["$em$strong"];
-				}
-				$token_relist[] = $em_re;
-				$token_relist[] = $strong_re;
-				
-				# Construct master expression from list.
-				$token_re = '{('. implode('|', $token_relist) .')}';
-				$this->em_strong_prepared_relist["$em$strong"] = $token_re;
-			}
-		}
-	}
-	
-	function doItalicsAndBold($text) {
-		$token_stack = array('');
-		$text_stack = array('');
-		$em = '';
-		$strong = '';
-		$tree_char_em = false;
-		
-		while (1) {
-			#
-			# Get prepared regular expression for seraching emphasis tokens
-			# in current context.
-			#
-			$token_re = $this->em_strong_prepared_relist["$em$strong"];
-			
-			#
-			# Each loop iteration search for the next emphasis token. 
-			# Each token is then passed to handleSpanToken.
-			#
-			$parts = preg_split($token_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
-			$text_stack[0] .= $parts[0];
-			$token =& $parts[1];
-			$text =& $parts[2];
-			
-			if (empty($token)) {
-				# Reached end of text span: empty stack without emitting.
-				# any more emphasis.
-				while ($token_stack[0]) {
-					$text_stack[1] .= array_shift($token_stack);
-					$text_stack[0] .= array_shift($text_stack);
-				}
-				break;
-			}
-			
-			$token_len = strlen($token);
-			if ($tree_char_em) {
-				# Reached closing marker while inside a three-char emphasis.
-				if ($token_len == 3) {
-					# Three-char closing marker, close em and strong.
-					array_shift($token_stack);
-					$span = array_shift($text_stack);
-					$span = $this->runSpanGamut($span);
-					$span = "<strong><em>$span</em></strong>";
-					$text_stack[0] .= $this->hashPart($span);
-					$em = '';
-					$strong = '';
-				} else {
-					# Other closing marker: close one em or strong and
-					# change current token state to match the other
-					$token_stack[0] = str_repeat($token{0}, 3-$token_len);
-					$tag = $token_len == 2 ? "strong" : "em";
-					$span = $text_stack[0];
-					$span = $this->runSpanGamut($span);
-					$span = "<$tag>$span</$tag>";
-					$text_stack[0] = $this->hashPart($span);
-					$$tag = ''; # $$tag stands for $em or $strong
-				}
-				$tree_char_em = false;
-			} else if ($token_len == 3) {
-				if ($em) {
-					# Reached closing marker for both em and strong.
-					# Closing strong marker:
-					for ($i = 0; $i < 2; ++$i) {
-						$shifted_token = array_shift($token_stack);
-						$tag = strlen($shifted_token) == 2 ? "strong" : "em";
-						$span = array_shift($text_stack);
-						$span = $this->runSpanGamut($span);
-						$span = "<$tag>$span</$tag>";
-						$text_stack[0] .= $this->hashPart($span);
-						$$tag = ''; # $$tag stands for $em or $strong
-					}
-				} else {
-					# Reached opening three-char emphasis marker. Push on token 
-					# stack; will be handled by the special condition above.
-					$em = $token{0};
-					$strong = "$em$em";
-					array_unshift($token_stack, $token);
-					array_unshift($text_stack, '');
-					$tree_char_em = true;
-				}
-			} else if ($token_len == 2) {
-				if ($strong) {
-					# Unwind any dangling emphasis marker:
-					if (strlen($token_stack[0]) == 1) {
-						$text_stack[1] .= array_shift($token_stack);
-						$text_stack[0] .= array_shift($text_stack);
-					}
-					# Closing strong marker:
-					array_shift($token_stack);
-					$span = array_shift($text_stack);
-					$span = $this->runSpanGamut($span);
-					$span = "<strong>$span</strong>";
-					$text_stack[0] .= $this->hashPart($span);
-					$strong = '';
-				} else {
-					array_unshift($token_stack, $token);
-					array_unshift($text_stack, '');
-					$strong = $token;
-				}
-			} else {
-				# Here $token_len == 1
-				if ($em) {
-					if (strlen($token_stack[0]) == 1) {
-						# Closing emphasis marker:
-						array_shift($token_stack);
-						$span = array_shift($text_stack);
-						$span = $this->runSpanGamut($span);
-						$span = "<em>$span</em>";
-						$text_stack[0] .= $this->hashPart($span);
-						$em = '';
-					} else {
-						$text_stack[0] .= $token;
-					}
-				} else {
-					array_unshift($token_stack, $token);
-					array_unshift($text_stack, '');
-					$em = $token;
-				}
-			}
-		}
-		return $text_stack[0];
-	}
-
-
-	function doBlockQuotes($text) {
-		$text = preg_replace_callback('/
-			  (								# Wrap whole match in $1
-				(?>
-				  ^[ ]*>[ ]?			# ">" at the start of a line
-					.+\n					# rest of the first line
-				  (.+\n)*					# subsequent consecutive lines
-				  \n*						# blanks
-				)+
-			  )
-			/xm',
-			array(&$this, '_doBlockQuotes_callback'), $text);
-
-		return $text;
-	}
-	function _doBlockQuotes_callback($matches) {
-		$bq = $matches[1];
-		# trim one level of quoting - trim whitespace-only lines
-		$bq = preg_replace('/^[ ]*>[ ]?|^[ ]+$/m', '', $bq);
-		$bq = $this->runBlockGamut($bq);		# recurse
-
-		$bq = preg_replace('/^/m', "  ", $bq);
-		# These leading spaces cause problem with <pre> content, 
-		# so we need to fix that:
-		$bq = preg_replace_callback('{(\s*<pre>.+?</pre>)}sx', 
-			array(&$this, '_doBlockQuotes_callback2'), $bq);
-
-		return "\n". $this->hashBlock("<blockquote>\n$bq\n</blockquote>")."\n\n";
-	}
-	function _doBlockQuotes_callback2($matches) {
-		$pre = $matches[1];
-		$pre = preg_replace('/^  /m', '', $pre);
-		return $pre;
-	}
-
-
-	function formParagraphs($text) {
-	#
-	#	Params:
-	#		$text - string to process with html <p> tags
-	#
-		# Strip leading and trailing lines:
-		$text = preg_replace('/\A\n+|\n+\z/', '', $text);
-
-		$grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
-
-		#
-		# Wrap <p> tags and unhashify HTML blocks
-		#
-		foreach ($grafs as $key => $value) {
-			if (!preg_match('/^B\x1A[0-9]+B$/', $value)) {
-				# Is a paragraph.
-				$value = $this->runSpanGamut($value);
-				$value = preg_replace('/^([ ]*)/', "<p>", $value);
-				$value .= "</p>";
-				$grafs[$key] = $this->unhash($value);
-			}
-			else {
-				# Is a block.
-				# Modify elements of @grafs in-place...
-				$graf = $value;
-				$block = $this->html_hashes[$graf];
-				$graf = $block;
-//				if (preg_match('{
-//					\A
-//					(							# $1 = <div> tag
-//					  <div  \s+
-//					  [^>]*
-//					  \b
-//					  markdown\s*=\s*  ([\'"])	#	$2 = attr quote char
-//					  1
-//					  \2
-//					  [^>]*
-//					  >
-//					)
-//					(							# $3 = contents
-//					.*
-//					)
-//					(</div>)					# $4 = closing tag
-//					\z
-//					}xs', $block, $matches))
-//				{
-//					list(, $div_open, , $div_content, $div_close) = $matches;
-//
-//					# We can't call Markdown(), because that resets the hash;
-//					# that initialization code should be pulled into its own sub, though.
-//					$div_content = $this->hashHTMLBlocks($div_content);
-//					
-//					# Run document gamut methods on the content.
-//					foreach ($this->document_gamut as $method => $priority) {
-//						$div_content = $this->$method($div_content);
-//					}
-//
-//					$div_open = preg_replace(
-//						'{\smarkdown\s*=\s*([\'"]).+?\1}', '', $div_open);
-//
-//					$graf = $div_open . "\n" . $div_content . "\n" . $div_close;
-//				}
-				$grafs[$key] = $graf;
-			}
-		}
-
-		return implode("\n\n", $grafs);
-	}
-
-
-	function encodeAttribute($text) {
-	#
-	# Encode text for a double-quoted HTML attribute. This function
-	# is *not* suitable for attributes enclosed in single quotes.
-	#
-		$text = $this->encodeAmpsAndAngles($text);
-		$text = str_replace('"', '&quot;', $text);
-		return $text;
-	}
-	
-	
-	function encodeAmpsAndAngles($text) {
-	#
-	# Smart processing for ampersands and angle brackets that need to 
-	# be encoded. Valid character entities are left alone unless the
-	# no-entities mode is set.
-	#
-		if ($this->no_entities) {
-			$text = str_replace('&', '&amp;', $text);
-		} else {
-			# Ampersand-encoding based entirely on Nat Irons's Amputator
-			# MT plugin: <http://bumppo.net/projects/amputator/>
-			$text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/', 
-								'&amp;', $text);;
-		}
-		# Encode remaining <'s
-		$text = str_replace('<', '&lt;', $text);
-
-		return $text;
-	}
-
-
-	function doAutoLinks($text) {
-		$text = preg_replace_callback('{<((https?|ftp|dict):[^\'">\s]+)>}i', 
-			array(&$this, '_doAutoLinks_url_callback'), $text);
-
-		# Email addresses: <address@domain.foo>
-		$text = preg_replace_callback('{
-			<
-			(?:mailto:)?
-			(
-				(?:
-					[-!#$%&\'*+/=?^_`.{|}~\w\x80-\xFF]+
-				|
-					".*?"
-				)
-				\@
-				(?:
-					[-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+
-				|
-					\[[\d.a-fA-F:]+\]	# IPv4 & IPv6
-				)
-			)
-			>
-			}xi',
-			array(&$this, '_doAutoLinks_email_callback'), $text);
-
-		return $text;
-	}
-	function _doAutoLinks_url_callback($matches) {
-		$url = $this->encodeAttribute($matches[1]);
-		$link = "<a href=\"$url\">$url</a>";
-		return $this->hashPart($link);
-	}
-	function _doAutoLinks_email_callback($matches) {
-		$address = $matches[1];
-		$link = $this->encodeEmailAddress($address);
-		return $this->hashPart($link);
-	}
-
-
-	function encodeEmailAddress($addr) {
-	#
-	#	Input: an email address, e.g. "foo@example.com"
-	#
-	#	Output: the email address as a mailto link, with each character
-	#		of the address encoded as either a decimal or hex entity, in
-	#		the hopes of foiling most address harvesting spam bots. E.g.:
-	#
-	#	  <p><a href="&#109;&#x61;&#105;&#x6c;&#116;&#x6f;&#58;&#x66;o&#111;
-	#        &#x40;&#101;&#x78;&#97;&#x6d;&#112;&#x6c;&#101;&#46;&#x63;&#111;
-	#        &#x6d;">&#x66;o&#111;&#x40;&#101;&#x78;&#97;&#x6d;&#112;&#x6c;
-	#        &#101;&#46;&#x63;&#111;&#x6d;</a></p>
-	#
-	#	Based by a filter by Matthew Wickline, posted to BBEdit-Talk.
-	#   With some optimizations by Milian Wolff.
-	#
-		$addr = "mailto:" . $addr;
-		$chars = preg_split('/(?<!^)(?!$)/', $addr);
-		$seed = (int)abs(crc32($addr) / strlen($addr)); # Deterministic seed.
-		
-		foreach ($chars as $key => $char) {
-			$ord = ord($char);
-			# Ignore non-ascii chars.
-			if ($ord < 128) {
-				$r = ($seed * (1 + $key)) % 100; # Pseudo-random function.
-				# roughly 10% raw, 45% hex, 45% dec
-				# '@' *must* be encoded. I insist.
-				if ($r > 90 && $char != '@') /* do nothing */;
-				else if ($r < 45) $chars[$key] = '&#x'.dechex($ord).';';
-				else              $chars[$key] = '&#'.$ord.';';
-			}
-		}
-		
-		$addr = implode('', $chars);
-		$text = implode('', array_slice($chars, 7)); # text without `mailto:`
-		$addr = "<a href=\"$addr\">$text</a>";
-
-		return $addr;
-	}
-
-
-	function parseSpan($str) {
-	#
-	# Take the string $str and parse it into tokens, hashing embeded HTML,
-	# escaped characters and handling code spans.
-	#
-		$output = '';
-		
-		$span_re = '{
-				(
-					\\\\'.$this->escape_chars_re.'
-				|
-					(?<![`\\\\])
-					`+						# code span marker
-			'.( $this->no_markup ? '' : '
-				|
-					<!--    .*?     -->		# comment
-				|
-					<\?.*?\?> | <%.*?%>		# processing instruction
-				|
-					<[/!$]?[-a-zA-Z0-9:_]+	# regular tags
-					(?>
-						\s
-						(?>[^"\'>]+|"[^"]*"|\'[^\']*\')*
-					)?
-					>
-			').'
-				)
-				}xs';
-
-		while (1) {
-			#
-			# Each loop iteration seach for either the next tag, the next 
-			# openning code span marker, or the next escaped character. 
-			# Each token is then passed to handleSpanToken.
-			#
-			$parts = preg_split($span_re, $str, 2, PREG_SPLIT_DELIM_CAPTURE);
-			
-			# Create token from text preceding tag.
-			if ($parts[0] != "") {
-				$output .= $parts[0];
-			}
-			
-			# Check if we reach the end.
-			if (isset($parts[1])) {
-				$output .= $this->handleSpanToken($parts[1], $parts[2]);
-				$str = $parts[2];
-			}
-			else {
-				break;
-			}
-		}
-		
-		return $output;
-	}
-	
-	
-	function handleSpanToken($token, &$str) {
-	#
-	# Handle $token provided by parseSpan by determining its nature and 
-	# returning the corresponding value that should replace it.
-	#
-		switch ($token{0}) {
-			case "\\":
-				return $this->hashPart("&#". ord($token{1}). ";");
-			case "`":
-				# Search for end marker in remaining text.
-				if (preg_match('/^(.*?[^`])'.preg_quote($token).'(?!`)(.*)$/sm', 
-					$str, $matches))
-				{
-					$str = $matches[2];
-					$codespan = $this->makeCodeSpan($matches[1]);
-					return $this->hashPart($codespan);
-				}
-				return $token; // return as text since no ending marker found.
-			default:
-				return $this->hashPart($token);
-		}
-	}
-
-
-	function outdent($text) {
-	#
-	# Remove one level of line-leading tabs or spaces
-	#
-		return preg_replace('/^(\t|[ ]{1,'.$this->tab_width.'})/m', '', $text);
-	}
-
-
-	# String length function for detab. `_initDetab` will create a function to 
-	# hanlde UTF-8 if the default function does not exist.
-	var $utf8_strlen = 'mb_strlen';
-	
-	function detab($text) {
-	#
-	# Replace tabs with the appropriate amount of space.
-	#
-		# For each line we separate the line in blocks delemited by
-		# tab characters. Then we reconstruct every line by adding the 
-		# appropriate number of space between each blocks.
-		
-		$text = preg_replace_callback('/^.*\t.*$/m',
-			array(&$this, '_detab_callback'), $text);
-
-		return $text;
-	}
-	function _detab_callback($matches) {
-		$line = $matches[0];
-		$strlen = $this->utf8_strlen; # strlen function for UTF-8.
-		
-		# Split in blocks.
-		$blocks = explode("\t", $line);
-		# Add each blocks to the line.
-		$line = $blocks[0];
-		unset($blocks[0]); # Do not add first block twice.
-		foreach ($blocks as $block) {
-			# Calculate amount of space, insert spaces, insert block.
-			$amount = $this->tab_width - 
-				$strlen($line, 'UTF-8') % $this->tab_width;
-			$line .= str_repeat(" ", $amount) . $block;
-		}
-		return $line;
-	}
-	function _initDetab() {
-	#
-	# Check for the availability of the function in the `utf8_strlen` property
-	# (initially `mb_strlen`). If the function is not available, create a 
-	# function that will loosely count the number of UTF-8 characters with a
-	# regular expression.
-	#
-		if (function_exists($this->utf8_strlen)) return;
-		$this->utf8_strlen = create_function('$text', 'return preg_match_all(
-			"/[\\\\x00-\\\\xBF]|[\\\\xC0-\\\\xFF][\\\\x80-\\\\xBF]*/", 
-			$text, $m);');
-	}
-
-
-	function unhash($text) {
-	#
-	# Swap back in all the tags hashed by _HashHTMLBlocks.
-	#
-		return preg_replace_callback('/(.)\x1A[0-9]+\1/', 
-			array(&$this, '_unhash_callback'), $text);
-	}
-	function _unhash_callback($matches) {
-		return $this->html_hashes[$matches[0]];
-	}
-
-}
-
-/*
-
-PHP Markdown
-============
-
-Description
------------
-
-This is a PHP translation of the original Markdown formatter written in
-Perl by John Gruber.
-
-Markdown is a text-to-HTML filter; it translates an easy-to-read /
-easy-to-write structured text format into HTML. Markdown's text format
-is most similar to that of plain text email, and supports features such
-as headers, *emphasis*, code blocks, blockquotes, and links.
-
-Markdown's syntax is designed not as a generic markup language, but
-specifically to serve as a front-end to (X)HTML. You can use span-level
-HTML tags anywhere in a Markdown document, and you can use block level
-HTML tags (like <div> and <table> as well).
-
-For more information about Markdown's syntax, see:
-
-<http://daringfireball.net/projects/markdown/>
-
-
-Bugs
-----
-
-To file bug reports please send email to:
-
-<michel.fortin@michelf.com>
-
-Please include with your report: (1) the example input; (2) the output you
-expected; (3) the output Markdown actually produced.
-
-
-Version History
---------------- 
-
-See the readme file for detailed release notes for this version.
-
-
-Copyright and License
----------------------
-
-PHP Markdown
-Copyright (c) 2004-2009 Michel Fortin  
-<http://michelf.com/>  
-All rights reserved.
-
-Based on Markdown
-Copyright (c) 2003-2006 John Gruber   
-<http://daringfireball.net/>   
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-*	Redistributions of source code must retain the above copyright notice,
-	this list of conditions and the following disclaimer.
-
-*	Redistributions in binary form must reproduce the above copyright
-	notice, this list of conditions and the following disclaimer in the
-	documentation and/or other materials provided with the distribution.
-
-*	Neither the name "Markdown" nor the names of its contributors may
-	be used to endorse or promote products derived from this software
-	without specific prior written permission.
-
-This software is provided by the copyright holders and contributors "as
-is" and any express or implied warranties, including, but not limited
-to, the implied warranties of merchantability and fitness for a
-particular purpose are disclaimed. In no event shall the copyright owner
-or contributors be liable for any direct, indirect, incidental, special,
-exemplary, or consequential damages (including, but not limited to,
-procurement of substitute goods or services; loss of use, data, or
-profits; or business interruption) however caused and on any theory of
-liability, whether in contract, strict liability, or tort (including
-negligence or otherwise) arising in any way out of the use of this
-software, even if advised of the possibility of such damage.
-
-*/
-?>
\ No newline at end of file