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<title>[2638] sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory: Plugin Directory: Update the readme parser with a newer version of MarkdownExtra and support far more of our edgecases in readme's.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://meta.trac.wordpress.org/changeset/2638">2638</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://meta.trac.wordpress.org/changeset/2638","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>dd32</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-02-26 02:26:25 +0000 (Fri, 26 Feb 2016)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Plugin Directory: Update the readme parser with a newer version of MarkdownExtra and support far more of our edgecases in readme's.
This also adds back Github readme.md formatting for most things (inline screenshots still not supported).
See <a href="http://meta.trac.wordpress.org/ticket/1584">#1584</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectoryclasstoolsphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/class-tools.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsCREDITS">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/CREDITS</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectoryclassreadmeparserphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/class-readme-parser.php</a></li>
<li>sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/</li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160Licensemd">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/License.md</a></li>
<li>sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/</li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownincphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.inc.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownExtraincphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.inc.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownExtraphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownInterfaceincphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.inc.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownInterfacephp">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160Readmemd">sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Readme.md</a></li>
</ul>

<h3>Removed Paths</h3>
<ul>
<li>sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/readme-parser/</li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectoryclassreadmeparserphpfromrev2602sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectoryreadmeparserReadmeParserphp"></a>
<div class="copfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Copied: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/class-readme-parser.php (from rev 2602, sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/readme-parser/ReadmeParser.php)</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/class-readme-parser.php                         (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/class-readme-parser.php   2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,388 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+namespace WordPressdotorg\Plugin_Directory;
+/**
+ * WordPress.org Plugin Readme Parser.
+ *
+ * Based on Baikonur_ReadmeParser from https://github.com/rmccue/WordPress-Readme-Parser
+ *
+ * Relies on \Michaelf\Markdown_Extra
+ *
+ * @package WordPressdotorg\Plugin_Directory
+ */
+class Readme_Parser {
+       public $name              = '';
+       public $tags              = array();
+       public $requires          = '';
+       public $tested            = '';
+       public $contributors      = array();
+       public $stable_tag        = '';
+       public $donate_link       = '';
+       public $short_description = '';
+       public $sections          = array();
+       public $upgrade_notice    = array();
+       public $screenshots       = array();
+
+       // These are the readme sections which we expect
+       private $expected_sections = array(
+               'description',
+               'installation',
+               'faq',
+               'screenshots',
+               'changelog',
+               'upgrade_notice',
+               'other_notes',
+       );
+
+       // We alias these sections, from => to
+       private $alias_sections = array(
+               'frequently_asked_questions' => 'faq',
+               'change_log' => 'changelog',
+               'screenshot' => 'screenshots',
+       );
+
+       public function __construct( $file ) {
+               $this->parse_readme( $file );
+       }
+
+       protected function parse_readme( $file ) {
+               $contents = file( $file );
+
+               $contents = array_map( array( $this, 'strip_newlines' ), $contents );
+
+               // Strip BOM
+               if ( strpos( $contents[0], "\xEF\xBB\xBF" ) === 0 ) {
+                       $contents[0] = substr( $contents[0], 3 );
+               }
+
+               $line       = $this->get_first_nonwhitespace( $contents );
+               $this->name = $this->sanitize_text( trim( $line, "#= " ) );
+
+               // Strip Github style header\n==== underlines
+               if ( '' === trim( $contents[0], '=-' ) ) {
+                       array_shift( $contents );
+               }
+
+               // Parse headers
+               $headers = array();
+
+               $line = $this->get_first_nonwhitespace( $contents );
+               do {
+                       $key = $value = null;
+                       if ( strpos( $line, ':' ) === false ) {
+                               break;
+                       }
+                       $bits = explode( ':', $line, 2 );
+                       list( $key, $value ) = $bits;
+                       $key = strtolower( str_replace( ' ', '_', trim( $key, " \t*-" ) ) );
+                       $headers[ $key ] = trim( $value );
+               } while ( ( $line = array_shift( $contents ) ) !== null && ( $line = trim( $line ) ) && ! empty( $line ) );
+               array_unshift( $contents, $line );
+
+               if ( ! empty( $headers['tags'] ) ) {
+                       $this->tags = explode( ',', $headers['tags'] );
+                       $this->tags = array_map( 'trim', $this->tags );
+               }
+               if ( ! empty( $headers['requires_at_least'] ) ) {
+                       $this->requires = $headers['requires_at_least'];
+               } elseif ( ! empty( $headers['requires'] ) ) {
+                       $this->requires = $headers['requires'];
+               }
+               if ( ! empty( $headers['tested_up_to'] ) ) {
+                       $this->tested = $headers['tested_up_to'];
+               } elseif ( ! empty( $headers['tested'] ) ) {
+                       $this->tested = $headers['tested'];
+               }
+               if ( ! empty( $headers['contributors'] ) ) {
+                       $this->contributors = explode( ',', $headers['contributors'] );
+                       $this->contributors = array_map( 'trim', $this->contributors );
+                       $this->contributors = $this->sanitize_contributors( $this->contributors );
+               }
+               if ( ! empty( $headers['stable_tag'] ) ) {
+                       $this->stable_tag = $headers['stable_tag'];
+               }
+               if ( ! empty( $headers['donate_link'] ) ) {
+                       $this->donate_link = $headers['donate_link'];
+               }
+
+               // Parse the short description
+               while ( ( $line = array_shift( $contents ) ) !== null ) {
+                       $trimmed = trim( $line );
+                       if ( empty( $trimmed ) ) {
+                               $this->short_description .= "\n";
+                               continue;
+                       }
+                       if ( ( '=' === $trimmed[0] && isset( $trimmed[1] ) && '=' === $trimmed[1] ) ||
+                            ( '#' === $trimmed[0] && isset( $trimmed[1] ) && '#' === $trimmed[1] ) ) { // Stop after any Markdown heading
+                               array_unshift( $contents, $line );
+                               break;
+                       }
+
+                       $this->short_description .= $line . "\n";
+               }
+               $this->short_description = trim( $this->short_description );
+
+               // Parse the rest of the body
+               // Prefill the sections, we'll filter out empty sections later.
+               $this->sections = array_fill_keys( $this->expected_sections, '' );
+               $current = $section_name = $section_title = '';
+               while ( ( $line = array_shift( $contents ) ) !== null ) {
+                       $trimmed = trim( $line );
+                       if ( empty( $trimmed ) ) {
+                               $current .= "\n";
+                               continue;
+                       }
+
+                       if ( ( '=' === $trimmed[0] && isset( $trimmed[1] ) && '=' === $trimmed[1] ) ||
+                            ( '#' === $trimmed[0] && isset( $trimmed[1] ) && '#' === $trimmed[1] && isset( $trimmed[2] ) && '#' !== $trimmed[2] ) ) { // Stop only after a ## Markdown header, not a ###.
+                               if ( ! empty( $section_name ) ) {
+                                       $this->sections[ $section_name ] .= trim( $current );
+                               }
+
+                               $current       = '';
+                               $section_title = trim( $line, "#= \t" );
+                               $section_name  = strtolower( str_replace( ' ', '_', $section_title ) );
+
+                               if ( isset( $this->alias_sections[ $section_name ] ) ) {
+                                       $section_name = $this->alias_sections[ $section_name ];
+                               }
+
+                               // If we encounter an unknown section header, include the provided Title, we'll filter it to other_notes later.
+                               if ( ! in_array( $section_name, $this->expected_sections ) ) {
+                                       $current .= '<h3>' . $section_title . '</h3>';
+                                       $section_name = 'other_notes';
+                               }
+                               continue;
+                       }
+
+                       $current .= $line . "\n";
+               }
+
+               if ( ! empty( $section_name ) ) {
+                       $this->sections[ $section_name ] .= trim( $current );
+               }
+
+               // Filter out any empty sections.
+               $this->sections = array_filter( $this->sections );
+
+               // Use the description for the short description if not provided.
+               if ( empty( $this->short_description ) && ! empty( $this->sections['description'] ) ) {
+                       $this->short_description = $this->sections['description'];
+               }
+
+               // Use the short description for the description section if not provided.
+               if ( empty( $this->sections['description'] ) ) {
+                       $this->sections['description'] = $this->short_description;
+               }
+
+               // Sanitize and trim the short_description to match requirements
+               $this->short_description = $this->sanitize_text( $this->short_description );
+               $this->short_description = $this->trim_length( $this->short_description, 150 );
+
+               // Parse out the Upgrade Notice section into it's own data
+               if ( isset( $this->sections['upgrade_notice'] ) ) {
+                       $lines = explode( "\n", $this->sections['upgrade_notice'] );
+                       $version = null;
+                       while ( ( $line = array_shift( $lines ) ) !== null ) {
+                               $trimmed = trim( $line );
+                               if ( empty( $trimmed ) ) {
+                                       continue;
+                               }
+
+                               if ( '=' === $trimmed[0] || '#' === $trimmed[0] ) {
+                                       if ( ! empty( $current ) ) {
+                                               $this->upgrade_notice[ $version ] = $this->sanitize_text( trim( $current ) );
+                                       }
+
+                                       $current = '';
+                                       $version = trim( $line, "#= \t" );
+                                       continue;
+                               }
+
+                               $current .= $line . "\n";
+                       }
+                       if ( ! empty( $version ) && ! empty( $current ) ) {
+                               $this->upgrade_notice[ $version ] = $this->sanitize_text( trim( $current ) );
+                       }
+                       unset( $this->sections['upgrade_notice'] );
+               }
+
+               // Markdownify!
+               $this->sections       = array_map( array( $this, 'parse_markdown' ), $this->sections );
+               $this->upgrade_notice = array_map( array( $this, 'parse_markdown' ), $this->upgrade_notice );
+
+               if ( isset( $this->sections['screenshots'] ) ) {
+                       preg_match_all( '#<li>(.*?)</li>#is', $this->sections['screenshots'], $screenshots, PREG_SET_ORDER );
+                       if ( $screenshots ) {
+                               $i = 1; // Screenshots start from 1
+                               foreach ( $screenshots as $ss ) {
+                                       $this->screenshots[ $i++ ] = $this->filter_text( $ss[1] );
+                               }
+                       }
+                       unset( $this->sections['screenshots'] );
+               }
+
+               // Filter the HTML
+               $this->sections = array_map( array( $this, 'filter_text' ), $this->sections );
+
+               return true;
+       }
+
+       protected function get_first_nonwhitespace( &$contents ) {
+               while ( ( $line = array_shift( $contents ) ) !== null ) {
+                       $trimmed = trim( $line );
+                       if ( ! empty( $line ) ) {
+                               break;
+                       }
+               }
+
+               return $line;
+       }
+
+       protected function strip_newlines( $line ) {
+               return rtrim( $line, "\r\n" );
+       }
+
+       protected function trim_length( $desc, $length = 150 ) {
+               if ( function_exists( 'mb_strlen' ) && function_exists( 'mb_substr' ) ) {
+                       if ( mb_strlen( $desc ) > $length ) {
+                               $desc = mb_substr( $desc, 0, $length );
+                       }
+               } else {
+                       if ( strlen( $desc ) > $length ) {
+                               $desc = substr( $desc, 0, $length );
+                       }
+               }
+
+               return trim( $desc );
+       }
+
+       /**
+        * @access protected
+        *
+        * @param string $text
+        * @return string
+        */
+       protected function filter_text( $text ) {
+               $text = trim( $text );
+
+               $allowed = array(
+                       'a'          => array(
+                               'href'  => true,
+                               'title' => true,
+                               'rel'   => true,
+                       ),
+                       'blockquote' => array(
+                               'cite' => true
+                       ),
+                       'br'         => true,
+                       'p'          => true,
+                       'code'       => true,
+                       'pre'        => true,
+                       'em'         => true,
+                       'strong'     => true,
+                       'ul'         => true,
+                       'ol'         => true,
+                       'li'         => true,
+                       'h3'         => true,
+                       'h4'         => true,
+               );
+
+               $text = balanceTags( $text );
+               $text = make_clickable( $text );
+
+               $text = wp_kses( $text, $allowed );
+
+               // wpautop() will eventually replace all \n's with <br>s, and that isn't what we want.
+               $text = preg_replace( "/(?<![> ])\n/", ' ', $text );
+
+               $text = trim( $text );
+
+               return $text;
+       }
+
+       /**
+        * @access protected
+        *
+        * @param string $text
+        * @return string
+        */
+       protected function sanitize_text( $text ) { // not fancy
+               $text = strip_tags( $text );
+               $text = esc_html( $text );
+               $text = trim( $text );
+
+               return $text;
+       }
+
+       /**
+        * Sanitize proided contributors to valid WordPress users
+        *
+        * @param array $users Array of user_login's or user_nicename's.
+        * @return array Array of user_logins.
+        */
+       protected function sanitize_contributors( $users ) {
+               foreach ( $users as $i => $name ) {
+                       if ( get_user_by( 'login', $name ) ) {
+                               continue;
+                       } elseif ( false !== ( $user = get_user_by( 'slug', $name ) ) ) {
+                               // Overwrite the nicename with the user_login
+                               $users[ $i ] = $user->user_login;
+                       } else {
+                               // Unknown user, we'll skip these entirely to encourage correct readmes
+                               unset( $users[ $i ] );
+                       }
+               }
+               return $users;
+       }
+
+       protected function parse_markdown( $text ) {
+               static $markdown = null;
+               if ( ! class_exists( '\\Michelf\\MarkdownExtra' ) ) {
+                       // TODO: Autoloader?
+                       include __DIR__ . '/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.inc.php';
+               }
+               if ( is_null( $markdown ) ) {
+                       $markdown = new \Michelf\MarkdownExtra();
+               }
+
+               $text = $this->code_trick( $text );
+               $text = preg_replace( '/^[\s]*=[\s]+(.+?)[\s]+=/m', "\n" . '<h4>$1</h4>' . "\n", $text );
+               $text = $markdown->transform( trim( $text ) );
+
+               return trim( $text );
+       }
+
+       protected function code_trick( $text ) {
+               // If doing markdown, first take any user formatted code blocks and turn them into backticks so that
+               // markdown will preserve things like underscores in code blocks
+               $text = preg_replace_callback( "!(<pre><code>|<code>)(.*?)(</code></pre>|</code>)!s", array( $this, 'code_trick_decodeit_cb' ), $text );
+               $text = str_replace( array( "\r\n", "\r" ), "\n", $text );
+
+               // Markdown can do inline code, we convert bbPress style block level code to Markdown style
+               $text = preg_replace_callback( "!(^|\n)([ \t]*?)`(.*?)`!s", array( $this, 'code_trick_indent_cb' ), $text );
+
+               return $text;
+       }
+
+       protected function code_trick_indent_cb( $matches ) {
+               $text = $matches[3];
+               $text = preg_replace( '|^|m', $matches[2] . '    ', $text );
+
+               return $matches[1] . $text;
+       }
+
+       protected function code_trick_decodeit_cb( $matches ) {
+               $text        = $matches[2];
+               $trans_table = array_flip( get_html_translation_table( HTML_ENTITIES ) );
+               $text        = strtr( $text, $trans_table );
+               $text        = str_replace( '<br />', '', $text );
+               $text        = str_replace( '&#38;', '&', $text );
+               $text        = str_replace( '&#39;', "'", $text );
+
+               if ( '<pre><code>' == $matches[1] ) {
+                       $text = "\n$text\n";
+               }
+
+               return "`$text`";
+       }
+}
</ins></span></pre></div>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectoryclasstoolsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/class-tools.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/class-tools.php 2016-02-26 01:49:52 UTC (rev 2637)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/class-tools.php   2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -9,35 +9,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> class Tools {
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-         * @param string $readme
-        * @return object
-        */
-       static function get_readme_data( $readme ) {
-
-               // Uses https://github.com/rmccue/WordPress-Readme-Parser (with modifications)
-               include_once __DIR__ . '/readme-parser/markdown.php';
-               include_once __DIR__ . '/readme-parser/compat.php';
-
-               $data = (object) \WPorg_Readme::parse_readme( $readme );
-
-               unset( $data->sections['screenshots'] ); // Useless.
-
-               // Sanitize contributors.
-               foreach ( $data->contributors as $i => $name ) {
-                       if ( get_user_by( 'login', $name ) ) {
-                               continue;
-                       } elseif ( false !== ( $user = get_user_by( 'slug', $name ) ) ) {
-                               $data->contributors[] = $user->user_login;
-                               unset( $data->contributors[ $i ] );
-                       } else {
-                               unset( $data->contributors[ $i ] );
-                       }
-               }
-
-               return $data;
-       }
-
-       /**
</del><span class="cx" style="display: block; padding: 0 10px">          * Retrieve the average color of a specified image.
</span><span class="cx" style="display: block; padding: 0 10px">         * This currently relies upon the Jetpack libraries.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span></span></pre></div>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsCREDITS"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/CREDITS</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/CREDITS    2016-02-26 01:49:52 UTC (rev 2637)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/CREDITS      2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1 +1,2 @@
</span><span class="cx" style="display: block; padding: 0 10px"> GeoPattern-php - MIT Licensed, https://github.com/redeyeventures/geopattern-php
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+michelf-php-markdown - BSD-3-Clause, https://github.com/michelf/php-markdown
</ins></span></pre></div>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160Licensemd"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/License.md</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/License.md                              (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/License.md        2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,36 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+PHP Markdown Lib  
+Copyright (c) 2004-2015 Michel Fortin  
+<https://michelf.ca/>  
+All rights reserved.
+
+Based on Markdown  
+Copyright (c) 2003-2006 John Gruber   
+<https://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.
</ins></span></pre></div>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownincphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.inc.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.inc.php                                (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.inc.php  2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,10 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+
+# Use this file if you cannot use class autoloading. It will include all the
+# files needed for the Markdown parser.
+#
+# Take a look at the PSR-0-compatible class autoloading implementation
+# in the Readme.php file if you want a simple autoloader setup.
+
+require_once dirname(__FILE__) . '/MarkdownInterface.php';
+require_once dirname(__FILE__) . '/Markdown.php';
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.inc.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.php                            (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.php      2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,1616 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+#
+# Markdown  -  A text-to-HTML conversion tool for web writers
+#
+# PHP Markdown  
+# Copyright (c) 2004-2015 Michel Fortin  
+# <https://michelf.ca/projects/php-markdown/>
+#
+# Original Markdown  
+# Copyright (c) 2004-2006 John Gruber  
+# <https://daringfireball.net/projects/markdown/>
+#
+namespace Michelf;
+
+
+#
+# Markdown Parser Class
+#
+
+class Markdown implements MarkdownInterface {
+
+       ### Version ###
+
+       const  MARKDOWNLIB_VERSION  =  "1.6.0";
+
+       ### Simple Function Interface ###
+
+       public static function defaultTransform($text) {
+       #
+       # Initialize the parser and return the result of its transform method.
+       # This will work fine for derived classes too.
+       #
+               # Take parser class on which this function was called.
+               $parser_class = \get_called_class();
+
+               # try to take parser from the static parser list
+               static $parser_list;
+               $parser =& $parser_list[$parser_class];
+
+               # create the parser it not already set
+               if (!$parser)
+                       $parser = new $parser_class;
+
+               # Transform text using parser.
+               return $parser->transform($text);
+       }
+
+       ### Configuration Variables ###
+
+       # Change to ">" for HTML output.
+       public $empty_element_suffix = " />";
+       public $tab_width = 4;
+       
+       # Change to `true` to disallow markup or entities.
+       public $no_markup = false;
+       public $no_entities = false;
+       
+       # Predefined urls and titles for reference links and images.
+       public $predef_urls = array();
+       public $predef_titles = array();
+
+       # Optional filter function for URLs
+       public $url_filter_func = null;
+
+       # Optional header id="" generation callback function.
+       public $header_id_func = null;
+       
+       # Optional function for converting code block content to HTML
+       public $code_block_content_func = null;
+
+       # Class attribute to toggle "enhanced ordered list" behaviour
+       # setting this to true will allow ordered lists to start from the index
+       # number that is defined first.  For example:
+       # 2. List item two
+       # 3. List item three
+       # 
+       # becomes
+       # <ol start="2">
+       # <li>List item two</li>
+       # <li>List item three</li>
+       # </ol>
+       public $enhanced_ordered_list = false;
+
+       ### Parser Implementation ###
+
+       # 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;
+
+
+       public function __construct() {
+       #
+       # 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.
+       protected $urls = array();
+       protected $titles = array();
+       protected $html_hashes = array();
+       
+       # Status flag to avoid invalid nesting.
+       protected $in_anchor = false;
+       
+       
+       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();
+               
+               $this->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();
+               $this->html_hashes = array();
+       }
+
+
+       public function transform($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 $document_gamut = array(
+               # Strip link definitions, store in hashes.
+               "stripLinkDefinitions" => 20,
+               
+               "runBasicBlockGamut"   => 30,
+               );
+
+
+       protected function stripLinkDefinitions($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|style|form|fieldset|iframe|math|svg|'.
+                                                  'article|section|nav|aside|hgroup|header|footer|'.
+                                                  'figure';
+
+               # 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)                      # Starting on its own line
+                               |                               # or
+                               \A\n?                   # the at 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 $block_gamut = array(
+       #
+       # These are all the transformations that form block-level
+       # tags like paragraphs, headers, and list items.
+       #
+               "doHeaders"         => 10,
+               "doHorizontalRules" => 20,
+               
+               "doLists"           => 40,
+               "doCodeBlocks"      => 50,
+               "doBlockQuotes"     => 60,
+               );
+
+       protected function runBlockGamut($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 $span_gamut = array(
+       #
+       # These are all the transformations that occur *within* block-level
+       # tags like paragraphs, headers, and list items.
+       #
+               # Process character escapes, code spans, and inline HTML
+               # in one shot.
+               "parseSpan"           => -30,
+
+               # Process anchor and image tags. Images must come first,
+               # because ![foo][f] looks like an anchor.
+               "doImages"            =>  10,
+               "doAnchors"           =>  20,
+               
+               # Make links out of things like `<https://example.com/>`
+               # Must come after doAnchors, because you can use < and >
+               # delimiters in inline links like [this](<url>).
+               "doAutoLinks"         =>  30,
+               "encodeAmpsAndAngles" =>  40,
+
+               "doItalicsAndBold"    =>  50,
+               "doHardBreaks"        =>  60,
+               );
+
+       protected function runSpanGamut($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 = $this->encodeURLAttribute($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];
+
+               // if the URL was of the form <s p a c e s> it got caught by the HTML
+               // tag parser and hashed. Need to reverse the process before using the URL.
+               $unhashed = $this->unhash($url);
+               if ($unhashed != $url)
+                       $url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
+
+               $url = $this->encodeURLAttribute($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 = $this->encodeURLAttribute($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 = $this->encodeURLAttribute($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;
+
+               # id attribute generation
+               $idAtt = $this->_generateIdFromHeaderValue($matches[1]);
+
+               $block = "<h$level$idAtt>".$this->runSpanGamut($matches[1])."</h$level>";
+               return "\n" . $this->hashBlock($block) . "\n\n";
+       }
+       protected function _doHeaders_callback_atx($matches) {
+
+               # id attribute generation
+               $idAtt = $this->_generateIdFromHeaderValue($matches[2]);
+
+               $level = strlen($matches[1]);
+               $block = "<h$level$idAtt>".$this->runSpanGamut($matches[2])."</h$level>";
+               return "\n" . $this->hashBlock($block) . "\n\n";
+       }
+
+       protected function _generateIdFromHeaderValue($headerValue) {
+
+               # if a header_id_func property is set, we can use it to automatically
+               # generate an id attribute.
+               #
+               # This method returns a string in the form id="foo", or an empty string
+               # otherwise.
+               if (!is_callable($this->header_id_func)) {
+                       return "";
+               }
+               $idValue = call_user_func($this->header_id_func, $headerValue);
+               if (!$idValue) return "";
+
+               return ' id="' . $this->encodeAttribute($idValue) . '"';
+
+       }
+
+       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+[\.]';
+
+               $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)";
+               $marker_ol_start_re = '[0-9]+';
+
+               $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);
+
+               $ol_start = 1;
+               if ($this->enhanced_ordered_list) {
+                       # Get the start number for ordered list.
+                       if ($list_type == 'ol') {
+                               $ol_start_array = array();
+                               $ol_start_check = preg_match("/$marker_ol_start_re/", $matches[4], $ol_start_array);
+                               if ($ol_start_check){
+                                       $ol_start = $ol_start_array[0];
+                               }
+                       }
+               }
+
+               if ($ol_start > 1 && $list_type == 'ol'){
+                       $result = $this->hashBlock("<$list_type start=\"$ol_start\">\n" . $result . "</$list_type>");
+               } else {
+                       $result = $this->hashBlock("<$list_type>\n" . $result . "</$list_type>");
+               }
+               return "\n". $result ."\n\n";
+       }
+
+       protected $list_level = 0;
+
+       protected function processListItems($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);
+               if ($this->code_block_content_func) {
+                       $codeblock = call_user_func($this->code_block_content_func, $codeblock, "");
+               } else {
+                       $codeblock = htmlspecialchars($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 $em_relist = array(
+               ''  => '(?:(?<!\*)\*(?!\*)|(?<!_)_(?!_))(?![\.,:;]?\s)',
+               '*' => '(?<![\s*])\*(?!\*)',
+               '_' => '(?<![\s_])_(?!_)',
+               );
+       protected $strong_relist = array(
+               ''   => '(?:(?<!\*)\*\*(?!\*)|(?<!_)__(?!_))(?![\.,:;]?\s)',
+               '**' => '(?<![\s*])\*\*(?!\*)',
+               '__' => '(?<![\s_])__(?!_)',
+               );
+       protected $em_strong_relist = array(
+               ''    => '(?:(?<!\*)\*\*\*(?!\*)|(?<!_)___(?!_))(?![\.,:;]?\s)',
+               '***' => '(?<![\s*])\*\*\*(?!\*)',
+               '___' => '(?<![\s_])___(?!_)',
+               );
+       protected $em_strong_prepared_relist;
+       
+       protected function prepareItalicsAndBold() {
+       #
+       # Prepare regular expressions for searching emphasis tokens in any
+       # context.
+       #
+               foreach ($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 $text;
+       }
+
+
+       protected function encodeURLAttribute($url, &$text = null) {
+       #
+       # Encode text for a double-quoted HTML attribute containing a URL,
+       # applying the URL filter if set. Also generates the textual
+       # representation for the URL (removing mailto: or tel:) storing it in $text.
+       # This function is *not* suitable for attributes enclosed in single quotes.
+       #
+               if ($this->url_filter_func)
+                       $url = call_user_func($this->url_filter_func, $url);
+
+               if (preg_match('{^mailto:}i', $url))
+                       $url = $this->encodeEntityObfuscatedAttribute($url, $text, 7);
+               else if (preg_match('{^tel:}i', $url))
+               {
+                       $url = $this->encodeAttribute($url);
+                       $text = substr($url, 4);
+               }
+               else
+               {
+                       $url = $this->encodeAttribute($url);
+                       $text = $url;
+               }
+
+               return $url;
+       }
+       
+       
+       protected function encodeAmpsAndAngles($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) {
+               $text = preg_replace_callback('{<((https?|ftp|dict|tel):[^\'">\s]+)>}i',
+                       array($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 = $this->encodeURLAttribute($matches[1], $text);
+               $link = "<a href=\"$url\">$text</a>";
+               return $this->hashPart($link);
+       }
+       protected function _doAutoLinks_email_callback($matches) {
+               $addr = $matches[1];
+               $url = $this->encodeURLAttribute("mailto:$addr", $text);
+               $link = "<a href=\"$url\">$text</a>";
+               return $this->hashPart($link);
+       }
+
+
+       protected function encodeEntityObfuscatedAttribute($text, &$tail = null, $head_length = 0) {
+       #
+       #       Input: some text to obfuscate, e.g. "mailto:foo@example.com"
+       #
+       #       Output: the same text but with most characters encoded as either a
+       #               decimal or hex entity, in the hopes of foiling most address
+       #               harvesting spam bots. E.g.:
+       #
+       #        &#109;&#x61;&#105;&#x6c;&#116;&#x6f;&#58;&#x66;o&#111;
+       #        &#x40;&#101;&#x78;&#97;&#x6d;&#112;&#x6c;&#101;&#46;&#x63;&#111;
+       #        &#x6d;
+       #
+       #       Note: the additional output $tail is assigned the same value as the
+       #       ouput, minus the number of characters specified by $head_length.
+       #
+       #       Based by a filter by Matthew Wickline, posted to BBEdit-Talk.
+       #   With some optimizations by Milian Wolff. Forced encoding of HTML
+       #       attribute special characters by Allan Odgaard.
+       #
+               if ($text == "") return $tail = "";
+
+               $chars = preg_split('/(?<!^)(?!$)/', $text);
+               $seed = (int)abs(crc32($text) / strlen($text)); # Deterministic seed.
+
+               foreach ($chars as $key => $char) {
+                       $ord = ord($char);
+                       # Ignore non-ascii chars.
+                       if ($ord < 128) {
+                               $r = ($seed * (1 + $key)) % 100; # Pseudo-random function.
+                               # roughly 10% raw, 45% hex, 45% dec
+                               # '@' *must* be encoded. I insist.
+                               # '"' and '>' have to be encoded inside the attribute
+                               if ($r > 90 && strpos('@"&>', $char) === false) /* do nothing */;
+                               else if ($r < 45) $chars[$key] = '&#x'.dechex($ord).';';
+                               else              $chars[$key] = '&#'.$ord.';';
+                       }
+               }
+
+               $text = implode('', $chars);
+               $tail = $head_length ? implode('', array_slice($chars, $head_length)) : $text;
+
+               return $text;
+       }
+
+
+       protected function parseSpan($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
+                                               (?>[^"\'>]+|"[^"]*"|\'[^\']*\')*
+                                       )?
+                                       >
+                               |
+                                       <[-a-zA-Z0-9:_]+\s*/> # xml-style empty tag
+                               |
+                                       </[-a-zA-Z0-9:_]+\s*> # closing tag
+                       ').'
+                               )
+                               }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);
+       }
+
+
+       # String length function for detab. `_initDetab` will create a function to 
+       # hanlde UTF-8 if the default function does not exist.
+       protected $utf8_strlen = 'mb_strlen';
+       
+       protected function detab($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]];
+       }
+
+}
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/Markdown.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownExtraincphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.inc.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.inc.php                           (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.inc.php     2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,11 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+
+# Use this file if you cannot use class autoloading. It will include all the
+# files needed for the MarkdownExtra parser.
+#
+# Take a look at the PSR-0-compatible class autoloading implementation
+# in the Readme.php file if you want a simple autoloader setup.
+
+require_once dirname(__FILE__) . '/MarkdownInterface.php';
+require_once dirname(__FILE__) . '/Markdown.php';
+require_once dirname(__FILE__) . '/MarkdownExtra.php';
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.inc.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownExtraphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.php                               (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.php 2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,1625 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+#
+# Markdown Extra  -  A text-to-HTML conversion tool for web writers
+#
+# PHP Markdown Extra
+# Copyright (c) 2004-2015 Michel Fortin  
+# <https://michelf.ca/projects/php-markdown/>
+#
+# Original Markdown
+# Copyright (c) 2004-2006 John Gruber  
+# <https://daringfireball.net/projects/markdown/>
+#
+namespace Michelf;
+
+
+#
+# Markdown Extra Parser Class
+#
+
+class MarkdownExtra extends \Michelf\Markdown {
+
+       ### Configuration Variables ###
+
+       # Prefix for footnote ids.
+       public $fn_id_prefix = "";
+       
+       # Optional title attribute for footnote links and backlinks.
+       public $fn_link_title = "";
+       public $fn_backlink_title = "";
+       
+       # Optional class attribute for footnote links and backlinks.
+       public $fn_link_class = "footnote-ref";
+       public $fn_backlink_class = "footnote-backref";
+
+       # Content to be displayed within footnote backlinks. The default is '↩';
+       # the U+FE0E on the end is a Unicode variant selector used to prevent iOS
+       # from displaying the arrow character as an emoji.
+       public $fn_backlink_html = '&#8617;&#xFE0E;';
+
+       # Class name for table cell alignment (%% replaced left/center/right)
+       # For instance: 'go-%%' becomes 'go-left' or 'go-right' or 'go-center'
+       # If empty, the align attribute is used instead of a class name.
+       public $table_align_class_tmpl = '';
+
+       # Optional class prefix for fenced code block.
+       public $code_class_prefix = "";
+       # Class attribute for code blocks goes on the `code` tag;
+       # setting this to true will put attributes on the `pre` tag instead.
+       public $code_attr_on_pre = false;
+
+       # Predefined abbreviations.
+       public $predef_abbr = array();
+
+       ### Parser Implementation ###
+
+       public function __construct() {
+       #
+       # Constructor function. Initialize the parser object.
+       #
+               # Add extra escapable characters before parent constructor 
+               # initialize the table.
+               $this->escape_chars .= ':|';
+               
+               # Insert extra document, block, and span transformations. 
+               # Parent constructor will do the sorting.
+               $this->document_gamut += array(
+                       "doFencedCodeBlocks" => 5,
+                       "stripFootnotes"     => 15,
+                       "stripAbbreviations" => 25,
+                       "appendFootnotes"    => 50,
+                       );
+               $this->block_gamut += array(
+                       "doFencedCodeBlocks" => 5,
+                       "doTables"           => 15,
+                       "doDefLists"         => 45,
+                       );
+               $this->span_gamut += array(
+                       "doFootnotes"        => 5,
+                       "doAbbreviations"    => 70,
+                       );
+               
+               $this->enhanced_ordered_list = true;
+               parent::__construct();
+       }
+       
+       
+       # Extra variables used during extra transformations.
+       protected $footnotes = array();
+       protected $footnotes_ordered = array();
+       protected $footnotes_ref_count = array();
+       protected $footnotes_numbers = array();
+       protected $abbr_desciptions = array();
+       protected $abbr_word_re = '';
+       
+       # Give the current footnote number.
+       protected $footnote_counter = 1;
+       
+       
+       protected function setup() {
+       #
+       # Setting up Extra-specific variables.
+       #
+               parent::setup();
+               
+               $this->footnotes = array();
+               $this->footnotes_ordered = array();
+               $this->footnotes_ref_count = array();
+               $this->footnotes_numbers = array();
+               $this->abbr_desciptions = array();
+               $this->abbr_word_re = '';
+               $this->footnote_counter = 1;
+               
+               foreach ($this->predef_abbr as $abbr_word => $abbr_desc) {
+                       if ($this->abbr_word_re)
+                               $this->abbr_word_re .= '|';
+                       $this->abbr_word_re .= preg_quote($abbr_word);
+                       $this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
+               }
+       }
+       
+       protected function teardown() {
+       #
+       # Clearing Extra-specific variables.
+       #
+               $this->footnotes = array();
+               $this->footnotes_ordered = array();
+               $this->footnotes_ref_count = array();
+               $this->footnotes_numbers = array();
+               $this->abbr_desciptions = array();
+               $this->abbr_word_re = '';
+               
+               parent::teardown();
+       }
+       
+       
+       ### Extra Attribute Parser ###
+
+       # Expression to use to catch attributes (includes the braces)
+       protected $id_class_attr_catch_re = '\{((?>[ ]*[#.a-z][-_:a-zA-Z0-9=]+){1,})[ ]*\}';
+       # Expression to use when parsing in a context when no capture is desired
+       protected $id_class_attr_nocatch_re = '\{(?>[ ]*[#.a-z][-_:a-zA-Z0-9=]+){1,}[ ]*\}';
+
+       protected function doExtraAttributes($tag_name, $attr, $defaultIdValue = null, $classes = array()) {
+       #
+       # Parse attributes caught by the $this->id_class_attr_catch_re expression
+       # and return the HTML-formatted list of attributes.
+       #
+       # Currently supported attributes are .class and #id.
+       #
+       # In addition, this method also supports supplying a default Id value,
+       # which will be used to populate the id attribute in case it was not
+       # overridden.
+               if (empty($attr) && !$defaultIdValue && empty($classes)) return "";
+               
+               # Split on components
+               preg_match_all('/[#.a-z][-_:a-zA-Z0-9=]+/', $attr, $matches);
+               $elements = $matches[0];
+
+               # handle classes and ids (only first id taken into account)
+               $attributes = array();
+               $id = false;
+               foreach ($elements as $element) {
+                       if ($element{0} == '.') {
+                               $classes[] = substr($element, 1);
+                       } else if ($element{0} == '#') {
+                               if ($id === false) $id = substr($element, 1);
+                       } else if (strpos($element, '=') > 0) {
+                               $parts = explode('=', $element, 2);
+                               $attributes[] = $parts[0] . '="' . $parts[1] . '"';
+                       }
+               }
+
+               if (!$id) $id = $defaultIdValue;
+
+               # compose attributes as string
+               $attr_str = "";
+               if (!empty($id)) {
+                       $attr_str .= ' id="'.$this->encodeAttribute($id) .'"';
+               }
+               if (!empty($classes)) {
+                       $attr_str .= ' class="'. implode(" ", $classes) . '"';
+               }
+               if (!$this->no_markup && !empty($attributes)) {
+                       $attr_str .= ' '.implode(" ", $attributes);
+               }
+               return $attr_str;
+       }
+
+
+       protected function stripLinkDefinitions($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 = $4
+                                                               [")]
+                                                               [ ]*
+                                                       )?      # title is optional
+                                       (?:[ ]* '.$this->id_class_attr_catch_re.' )?  # $5 = extra id & class attr
+                                                       (?:\n+|\Z)
+                       }xm',
+                       array($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];
+               $this->ref_attr[$link_id] = $this->doExtraAttributes("", $dummy =& $matches[5]);
+               return ''; # String that will replace the block
+       }
+
+
+       ### HTML Block Parser ###
+       
+       # Tags that are always treated as block tags:
+       protected $block_tags_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|form|fieldset|iframe|hr|legend|article|section|nav|aside|hgroup|header|footer|figcaption|figure';
+                                                  
+       # Tags treated as block tags only if the opening tag is alone on its line:
+       protected $context_block_tags_re = 'script|noscript|style|ins|del|iframe|object|source|track|param|math|svg|canvas|audio|video';
+       
+       # Tags where markdown="1" default to span mode:
+       protected $contain_span_tags_re = 'p|h[1-6]|li|dd|dt|td|th|legend|address';
+       
+       # Tags which must not have their contents modified, no matter where 
+       # they appear:
+       protected $clean_tags_re = 'script|style|math|svg';
+       
+       # Tags that do not need to be closed.
+       protected $auto_close_tags_re = 'hr|img|param|source|track';
+       
+
+       protected function hashHTMLBlocks($text) {
+       #
+       # Hashify HTML Blocks and "clean tags".
+       #
+       # 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.
+       #
+       # This works by calling _HashHTMLBlocks_InMarkdown, which then calls
+       # _HashHTMLBlocks_InHTML when it encounter block tags. When the markdown="1" 
+       # attribute is found within a tag, _HashHTMLBlocks_InHTML calls back
+       #  _HashHTMLBlocks_InMarkdown to handle the Markdown syntax within the tag.
+       # These two functions are calling each other. It's recursive!
+       #
+               if ($this->no_markup)  return $text;
+
+               #
+               # Call the HTML-in-Markdown hasher.
+               #
+               list($text, ) = $this->_hashHTMLBlocks_inMarkdown($text);
+               
+               return $text;
+       }
+       protected function _hashHTMLBlocks_inMarkdown($text, $indent = 0,
+                                                                               $enclosing_tag_re = '', $span = false)
+       {
+       #
+       # Parse markdown text, calling _HashHTMLBlocks_InHTML for block tags.
+       #
+       # *   $indent is the number of space to be ignored when checking for code 
+       #     blocks. This is important because if we don't take the indent into 
+       #     account, something like this (which looks right) won't work as expected:
+       #
+       #     <div>
+       #         <div markdown="1">
+       #         Hello World.  <-- Is this a Markdown code block or text?
+       #         </div>  <-- Is this a Markdown code block or a real tag?
+       #     <div>
+       #
+       #     If you don't like this, just don't indent the tag on which
+       #     you apply the markdown="1" attribute.
+       #
+       # *   If $enclosing_tag_re is not empty, stops at the first unmatched closing 
+       #     tag with that name. Nested tags supported.
+       #
+       # *   If $span is true, text inside must treated as span. So any double 
+       #     newline will be replaced by a single newline so that it does not create 
+       #     paragraphs.
+       #
+       # Returns an array of that form: ( processed text , remaining text )
+       #
+               if ($text === '') return array('', '');
+
+               # Regex to check for the presense of newlines around a block tag.
+               $newline_before_re = '/(?:^\n?|\n\n)*$/';
+               $newline_after_re = 
+                       '{
+                               ^                                               # Start of text following the tag.
+                               (?>[ ]*<!--.*?-->)?            # Optional comment.
+                               [ ]*\n                                  # Must be followed by newline.
+                       }xs';
+               
+               # Regex to match any tag.
+               $block_tag_re =
+                       '{
+                               (                                       # $2: Capture whole tag.
+                                       </?                                  # Any opening or closing tag.
+                                               (?>                          # Tag name.
+                                                       '.$this->block_tags_re.'                     |
+                                                       '.$this->context_block_tags_re.'     |
+                                                       '.$this->clean_tags_re.'             |
+                                                       (?!\s)'.$enclosing_tag_re.'
+                                               )
+                                               (?:
+                                                       (?=[\s"\'/a-zA-Z0-9])      # Allowed characters after tag name.
+                                                       (?>
+                                                               ".*?"         |       # Double quotes (can contain `>`)
+                                                               \'.*?\'         |       # Single quotes (can contain `>`)
+                                                               .+?                             # Anything but quotes and `>`.
+                                                       )*?
+                                               )?
+                                       >                                    # End of tag.
+                               |
+                                       <!--    .*?     -->       # HTML Comment
+                               |
+                                       <\?.*?\?> | <%.*?%> # Processing instruction
+                               |
+                                       <!\[CDATA\[.*?\]\]>       # CData Block
+                               '. ( !$span ? ' # If not in span.
+                               |
+                                       # Indented code block
+                                       (?: ^[ ]*\n | ^ | \n[ ]*\n )
+                                       [ ]{'.($indent+4).'}[^\n]* \n
+                                       (?>
+                                               (?: [ ]{'.($indent+4).'}[^\n]* | [ ]* ) \n
+                                       )*
+                               |
+                                       # Fenced code block marker
+                                       (?<= ^ | \n )
+                                       [ ]{0,'.($indent+3).'}(?:~{3,}|`{3,})
+                                       [ ]*
+                                       (?: \.?[-_:a-zA-Z0-9]+ )? # standalone class name
+                                       [ ]*
+                                       (?: '.$this->id_class_attr_nocatch_re.' )? # extra attributes
+                                       [ ]*
+                                       (?= \n )
+                               ' : '' ). ' # End (if not is span).
+                               |
+                                       # Code span marker
+                                       # Note, this regex needs to go after backtick fenced
+                                       # code blocks but it should also be kept outside of the
+                                       # "if not in span" condition adding backticks to the parser
+                                       `+
+                               )
+                       }xs';
+
+               
+               $depth = 0;             # Current depth inside the tag tree.
+               $parsed = ""; # Parsed text that will be returned.
+
+               #
+               # Loop through every tag until we find the closing tag of the parent
+               # or loop until reaching the end of text if no parent tag specified.
+               #
+               do {
+                       #
+                       # Split the text using the first $tag_match pattern found.
+                       # Text before  pattern will be first in the array, text after
+                       # pattern will be at the end, and between will be any catches made 
+                       # by the pattern.
+                       #
+                       $parts = preg_split($block_tag_re, $text, 2, 
+                                                               PREG_SPLIT_DELIM_CAPTURE);
+                       
+                       # If in Markdown span mode, add a empty-string span-level hash 
+                       # after each newline to prevent triggering any block element.
+                       if ($span) {
+                               $void = $this->hashPart("", ':');
+                               $newline = "$void\n";
+                               $parts[0] = $void . str_replace("\n", $newline, $parts[0]) . $void;
+                       }
+                       
+                       $parsed .= $parts[0]; # Text before current tag.
+                       
+                       # If end of $text has been reached. Stop loop.
+                       if (count($parts) < 3) {
+                               $text = "";
+                               break;
+                       }
+                       
+                       $tag  = $parts[1]; # Tag to handle.
+                       $text = $parts[2]; # Remaining text after current tag.
+                       $tag_re = preg_quote($tag); # For use in a regular expression.
+                       
+                       #
+                       # Check for: Fenced code block marker.
+                       # Note: need to recheck the whole tag to disambiguate backtick
+                       # fences from code spans
+                       #
+                       if (preg_match('{^\n?([ ]{0,'.($indent+3).'})(~{3,}|`{3,})[ ]*(?:\.?[-_:a-zA-Z0-9]+)?[ ]*(?:'.$this->id_class_attr_nocatch_re.')?[ ]*\n?$}', $tag, $capture)) {
+                               # Fenced code block marker: find matching end marker.
+                               $fence_indent = strlen($capture[1]); # use captured indent in re
+                               $fence_re = $capture[2]; # use captured fence in re
+                               if (preg_match('{^(?>.*\n)*?[ ]{'.($fence_indent).'}'.$fence_re.'[ ]*(?:\n|$)}', $text,
+                                       $matches)) 
+                               {
+                                       # End marker found: pass text unchanged until marker.
+                                       $parsed .= $tag . $matches[0];
+                                       $text = substr($text, strlen($matches[0]));
+                               }
+                               else {
+                                       # No end marker: just skip it.
+                                       $parsed .= $tag;
+                               }
+                       }
+                       #
+                       # Check for: Indented code block.
+                       #
+                       else if ($tag{0} == "\n" || $tag{0} == " ") {
+                               # Indented code block: pass it unchanged, will be handled 
+                               # later.
+                               $parsed .= $tag;
+                       }
+                       #
+                       # Check for: Code span marker
+                       # Note: need to check this after backtick fenced code blocks
+                       #
+                       else if ($tag{0} == "`") {
+                               # Find corresponding end marker.
+                               $tag_re = preg_quote($tag);
+                               if (preg_match('{^(?>.+?|\n(?!\n))*?(?<!`)'.$tag_re.'(?!`)}',
+                                       $text, $matches))
+                               {
+                                       # End marker found: pass text unchanged until marker.
+                                       $parsed .= $tag . $matches[0];
+                                       $text = substr($text, strlen($matches[0]));
+                               }
+                               else {
+                                       # Unmatched marker: just skip it.
+                                       $parsed .= $tag;
+                               }
+                       }
+                       #
+                       # Check for: Opening Block level tag or
+                       #            Opening Context Block tag (like ins and del) 
+                       #               used as a block tag (tag is alone on it's line).
+                       #
+                       else if (preg_match('{^<(?:'.$this->block_tags_re.')\b}', $tag) ||
+                               (       preg_match('{^<(?:'.$this->context_block_tags_re.')\b}', $tag) &&
+                                       preg_match($newline_before_re, $parsed) &&
+                                       preg_match($newline_after_re, $text)    )
+                               )
+                       {
+                               # Need to parse tag and following text using the HTML parser.
+                               list($block_text, $text) = 
+                                       $this->_hashHTMLBlocks_inHTML($tag . $text, "hashBlock", true);
+                               
+                               # Make sure it stays outside of any paragraph by adding newlines.
+                               $parsed .= "\n\n$block_text\n\n";
+                       }
+                       #
+                       # Check for: Clean tag (like script, math)
+                       #            HTML Comments, processing instructions.
+                       #
+                       else if (preg_match('{^<(?:'.$this->clean_tags_re.')\b}', $tag) ||
+                               $tag{1} == '!' || $tag{1} == '?')
+                       {
+                               # Need to parse tag and following text using the HTML parser.
+                               # (don't check for markdown attribute)
+                               list($block_text, $text) = 
+                                       $this->_hashHTMLBlocks_inHTML($tag . $text, "hashClean", false);
+                               
+                               $parsed .= $block_text;
+                       }
+                       #
+                       # Check for: Tag with same name as enclosing tag.
+                       #
+                       else if ($enclosing_tag_re !== '' &&
+                               # Same name as enclosing tag.
+                               preg_match('{^</?(?:'.$enclosing_tag_re.')\b}', $tag))
+                       {
+                               #
+                               # Increase/decrease nested tag count.
+                               #
+                               if ($tag{1} == '/')                                             $depth--;
+                               else if ($tag{strlen($tag)-2} != '/')   $depth++;
+
+                               if ($depth < 0) {
+                                       #
+                                       # Going out of parent element. Clean up and break so we
+                                       # return to the calling function.
+                                       #
+                                       $text = $tag . $text;
+                                       break;
+                               }
+                               
+                               $parsed .= $tag;
+                       }
+                       else {
+                               $parsed .= $tag;
+                       }
+               } while ($depth >= 0);
+               
+               return array($parsed, $text);
+       }
+       protected function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
+       #
+       # Parse HTML, calling _HashHTMLBlocks_InMarkdown for block tags.
+       #
+       # *   Calls $hash_method to convert any blocks.
+       # *   Stops when the first opening tag closes.
+       # *   $md_attr indicate if the use of the `markdown="1"` attribute is allowed.
+       #     (it is not inside clean tags)
+       #
+       # Returns an array of that form: ( processed text , remaining text )
+       #
+               if ($text === '') return array('', '');
+               
+               # Regex to match `markdown` attribute inside of a tag.
+               $markdown_attr_re = '
+                       {
+                               \s*                     # Eat whitespace before the `markdown` attribute
+                               markdown
+                               \s*=\s*
+                               (?>
+                                       (["\'])            # $1: quote delimiter           
+                                       (.*?)           # $2: attribute value
+                                       \1                      # matching delimiter    
+                               |
+                                       ([^\s>]*)    # $3: unquoted attribute value
+                               )
+                               ()                              # $4: make $3 always defined (avoid warnings)
+                       }xs';
+               
+               # Regex to match any tag.
+               $tag_re = '{
+                               (                                       # $2: Capture whole tag.
+                                       </?                                  # Any opening or closing tag.
+                                               [\w:$]+                 # Tag name.
+                                               (?:
+                                                       (?=[\s"\'/a-zA-Z0-9])      # Allowed characters after tag name.
+                                                       (?>
+                                                               ".*?"         |       # Double quotes (can contain `>`)
+                                                               \'.*?\'         |       # Single quotes (can contain `>`)
+                                                               .+?                             # Anything but quotes and `>`.
+                                                       )*?
+                                               )?
+                                       >                                    # End of tag.
+                               |
+                                       <!--    .*?     -->       # HTML Comment
+                               |
+                                       <\?.*?\?> | <%.*?%> # Processing instruction
+                               |
+                                       <!\[CDATA\[.*?\]\]>       # CData Block
+                               )
+                       }xs';
+               
+               $original_text = $text;         # Save original text in case of faliure.
+               
+               $depth          = 0;    # Current depth inside the tag tree.
+               $block_text     = ""; # Temporary text holder for current text.
+               $parsed         = ""; # Parsed text that will be returned.
+
+               #
+               # Get the name of the starting tag.
+               # (This pattern makes $base_tag_name_re safe without quoting.)
+               #
+               if (preg_match('/^<([\w:$]*)\b/', $text, $matches))
+                       $base_tag_name_re = $matches[1];
+
+               #
+               # Loop through every tag until we find the corresponding closing tag.
+               #
+               do {
+                       #
+                       # Split the text using the first $tag_match pattern found.
+                       # Text before  pattern will be first in the array, text after
+                       # pattern will be at the end, and between will be any catches made 
+                       # by the pattern.
+                       #
+                       $parts = preg_split($tag_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
+                       
+                       if (count($parts) < 3) {
+                               #
+                               # End of $text reached with unbalenced tag(s).
+                               # In that case, we return original text unchanged and pass the
+                               # first character as filtered to prevent an infinite loop in the 
+                               # parent function.
+                               #
+                               return array($original_text{0}, substr($original_text, 1));
+                       }
+                       
+                       $block_text .= $parts[0]; # Text before current tag.
+                       $tag         = $parts[1]; # Tag to handle.
+                       $text        = $parts[2]; # Remaining text after current tag.
+                       
+                       #
+                       # Check for: Auto-close tag (like <hr/>)
+                       #                        Comments and Processing Instructions.
+                       #
+                       if (preg_match('{^</?(?:'.$this->auto_close_tags_re.')\b}', $tag) ||
+                               $tag{1} == '!' || $tag{1} == '?')
+                       {
+                               # Just add the tag to the block as if it was text.
+                               $block_text .= $tag;
+                       }
+                       else {
+                               #
+                               # Increase/decrease nested tag count. Only do so if
+                               # the tag's name match base tag's.
+                               #
+                               if (preg_match('{^</?'.$base_tag_name_re.'\b}', $tag)) {
+                                       if ($tag{1} == '/')                                             $depth--;
+                                       else if ($tag{strlen($tag)-2} != '/')   $depth++;
+                               }
+                               
+                               #
+                               # Check for `markdown="1"` attribute and handle it.
+                               #
+                               if ($md_attr && 
+                                       preg_match($markdown_attr_re, $tag, $attr_m) &&
+                                       preg_match('/^1|block|span$/', $attr_m[2] . $attr_m[3]))
+                               {
+                                       # Remove `markdown` attribute from opening tag.
+                                       $tag = preg_replace($markdown_attr_re, '', $tag);
+                                       
+                                       # Check if text inside this tag must be parsed in span mode.
+                                       $this->mode = $attr_m[2] . $attr_m[3];
+                                       $span_mode = $this->mode == 'span' || $this->mode != 'block' &&
+                                               preg_match('{^<(?:'.$this->contain_span_tags_re.')\b}', $tag);
+                                       
+                                       # Calculate indent before tag.
+                                       if (preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches)) {
+                                               $strlen = $this->utf8_strlen;
+                                               $indent = $strlen($matches[1], 'UTF-8');
+                                       } else {
+                                               $indent = 0;
+                                       }
+                                       
+                                       # End preceding block with this tag.
+                                       $block_text .= $tag;
+                                       $parsed .= $this->$hash_method($block_text);
+                                       
+                                       # Get enclosing tag name for the ParseMarkdown function.
+                                       # (This pattern makes $tag_name_re safe without quoting.)
+                                       preg_match('/^<([\w:$]*)\b/', $tag, $matches);
+                                       $tag_name_re = $matches[1];
+                                       
+                                       # Parse the content using the HTML-in-Markdown parser.
+                                       list ($block_text, $text)
+                                               = $this->_hashHTMLBlocks_inMarkdown($text, $indent, 
+                                                       $tag_name_re, $span_mode);
+                                       
+                                       # Outdent markdown text.
+                                       if ($indent > 0) {
+                                               $block_text = preg_replace("/^[ ]{1,$indent}/m", "", 
+                                                                                                       $block_text);
+                                       }
+                                       
+                                       # Append tag content to parsed text.
+                                       if (!$span_mode)        $parsed .= "\n\n$block_text\n\n";
+                                       else                            $parsed .= "$block_text";
+                                       
+                                       # Start over with a new block.
+                                       $block_text = "";
+                               }
+                               else $block_text .= $tag;
+                       }
+                       
+               } while ($depth > 0);
+               
+               #
+               # Hash last block text that wasn't processed inside the loop.
+               #
+               $parsed .= $this->$hash_method($block_text);
+               
+               return array($parsed, $text);
+       }
+
+
+       protected function hashClean($text) {
+       #
+       # Called whenever a tag must be hashed when a function inserts a "clean" tag
+       # in $text, it passes through this function and is automaticaly escaped, 
+       # blocking invalid nested overlap.
+       #
+               return $this->hashPart($text, 'C');
+       }
+
+
+       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
+                         \[
+                               ('.$this->nested_brackets_re.')      # link text = $2
+                         \]
+                         \(                    # literal paren
+                               [ \n]*
+                               (?:
+                                       <(.+?)>   # href = $3
+                               |
+                                       ('.$this->nested_url_parenthesis_re.')       # href = $4
+                               )
+                               [ \n]*
+                               (                       # $5
+                                 ([\'"])  # quote char = $6
+                                 (.*?)         # Title = $7
+                                 \6            # matching quote
+                                 [ \n]*        # ignore any spaces/tabs between closing quote and )
+                               )?                      # title is optional
+                         \)
+                         (?:[ ]? '.$this->id_class_attr_catch_re.' )?        # $8 = id/class attributes
+                       )
+                       }xs',
+                       array($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 = $this->encodeURLAttribute($url);
+                       
+                       $result = "<a href=\"$url\"";
+                       if ( isset( $this->titles[$link_id] ) ) {
+                               $title = $this->titles[$link_id];
+                               $title = $this->encodeAttribute($title);
+                               $result .=  " title=\"$title\"";
+                       }
+                       if (isset($this->ref_attr[$link_id]))
+                               $result .= $this->ref_attr[$link_id];
+               
+                       $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];
+               $attr  = $this->doExtraAttributes("a", $dummy =& $matches[8]);
+
+               // if the URL was of the form <s p a c e s> it got caught by the HTML
+               // tag parser and hashed. Need to reverse the process before using the URL.
+               $unhashed = $this->unhash($url);
+               if ($unhashed != $url)
+                       $url = preg_replace('/^<(.*)>$/', '\1', $unhashed);
+
+               $url = $this->encodeURLAttribute($url);
+
+               $result = "<a href=\"$url\"";
+               if (isset($title)) {
+                       $title = $this->encodeAttribute($title);
+                       $result .=  " title=\"$title\"";
+               }
+               $result .= $attr;
+               
+               $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
+                         \(                    # literal paren
+                               [ \n]*
+                               (?:
+                                       <(\S*)>   # src url = $3
+                               |
+                                       ('.$this->nested_url_parenthesis_re.')       # src url = $4
+                               )
+                               [ \n]*
+                               (                       # $5
+                                 ([\'"])  # quote char = $6
+                                 (.*?)         # title = $7
+                                 \6            # matching quote
+                                 [ \n]*
+                               )?                      # title is optional
+                         \)
+                         (?:[ ]? '.$this->id_class_attr_catch_re.' )?        # $8 = id/class attributes
+                       )
+                       }xs',
+                       array($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 = $this->encodeURLAttribute($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\"";
+                       }
+                       if (isset($this->ref_attr[$link_id]))
+                               $result .= $this->ref_attr[$link_id];
+                       $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];
+               $attr  = $this->doExtraAttributes("img", $dummy =& $matches[8]);
+
+               $alt_text = $this->encodeAttribute($alt_text);
+               $url = $this->encodeURLAttribute($url);
+               $result = "<img src=\"$url\" alt=\"$alt_text\"";
+               if (isset($title)) {
+                       $title = $this->encodeAttribute($title);
+                       $result .=  " title=\"$title\""; # $title already quoted
+               }
+               $result .= $attr;
+               $result .= $this->empty_element_suffix;
+
+               return $this->hashPart($result);
+       }
+
+
+       protected function doHeaders($text) {
+       #
+       # Redefined to add id and class attribute support.
+       #
+               # Setext-style headers:
+               #         Header 1  {#header1}
+               #         ========
+               #  
+               #         Header 2  {#header2 .class1 .class2}
+               #         --------
+               #
+               $text = preg_replace_callback(
+                       '{
+                               (^.+?)                                                          # $1: Header text
+                               (?:[ ]+ '.$this->id_class_attr_catch_re.' )?  # $3 = id/class attributes
+                               [ ]*\n(=+|-+)[ ]*\n+                            # $3: Header footer
+                       }mx',
+                       array($this, '_doHeaders_callback_setext'), $text);
+
+               # atx-style headers:
+               #       # Header 1        {#header1}
+               #       ## Header 2       {#header2}
+               #       ## Header 2 with closing hashes ##  {#header3.class1.class2}
+               #       ...
+               #       ###### Header 6   {.class2}
+               #
+               $text = preg_replace_callback('{
+                               ^(\#{1,6})      # $1 = string of #\'s
+                               [ ]*
+                               (.+?)           # $2 = Header text
+                               [ ]*
+                               \#*                     # optional closing #\'s (not counted)
+                               (?:[ ]+ '.$this->id_class_attr_catch_re.' )?  # $3 = id/class attributes
+                               [ ]*
+                               \n+
+                       }xm',
+                       array($this, '_doHeaders_callback_atx'), $text);
+
+               return $text;
+       }
+       protected function _doHeaders_callback_setext($matches) {
+               if ($matches[3] == '-' && preg_match('{^- }', $matches[1]))
+                       return $matches[0];
+
+               $level = $matches[3]{0} == '=' ? 1 : 2;
+
+               $defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[1]) : null;
+
+               $attr  = $this->doExtraAttributes("h$level", $dummy =& $matches[2], $defaultId);
+               $block = "<h$level$attr>".$this->runSpanGamut($matches[1])."</h$level>";
+               return "\n" . $this->hashBlock($block) . "\n\n";
+       }
+       protected function _doHeaders_callback_atx($matches) {
+               $level = strlen($matches[1]);
+
+               $defaultId = is_callable($this->header_id_func) ? call_user_func($this->header_id_func, $matches[2]) : null;
+               $attr  = $this->doExtraAttributes("h$level", $dummy =& $matches[3], $defaultId);
+               $block = "<h$level$attr>".$this->runSpanGamut($matches[2])."</h$level>";
+               return "\n" . $this->hashBlock($block) . "\n\n";
+       }
+
+
+       protected function doTables($text) {
+       #
+       # Form HTML tables.
+       #
+               $less_than_tab = $this->tab_width - 1;
+               #
+               # Find tables with leading pipe.
+               #
+               #       | Header 1 | Header 2
+               #       | -------- | --------
+               #       | Cell 1   | Cell 2
+               #       | Cell 3   | Cell 4
+               #
+               $text = preg_replace_callback('
+                       {
+                               ^                                                       # Start of a line
+                               [ ]{0,'.$less_than_tab.'}       # Allowed whitespace.
+                               [|]                                                     # Optional leading pipe (present)
+                               (.+) \n                                         # $1: Header row (at least one pipe)
+                               
+                               [ ]{0,'.$less_than_tab.'}       # Allowed whitespace.
+                               [|] ([ ]*[-:]+[-| :]*) \n       # $2: Header underline
+                               
+                               (                                                       # $3: Cells
+                                       (?>
+                                               [ ]*                            # Allowed whitespace.
+                                               [|] .* \n                       # Row content.
+                                       )*
+                               )
+                               (?=\n|\Z)                                       # Stop at final double newline.
+                       }xm',
+                       array($this, '_doTable_leadingPipe_callback'), $text);
+               
+               #
+               # Find tables without leading pipe.
+               #
+               #       Header 1 | Header 2
+               #       -------- | --------
+               #       Cell 1   | Cell 2
+               #       Cell 3   | Cell 4
+               #
+               $text = preg_replace_callback('
+                       {
+                               ^                                                       # Start of a line
+                               [ ]{0,'.$less_than_tab.'}       # Allowed whitespace.
+                               (\S.*[|].*) \n                          # $1: Header row (at least one pipe)
+                               
+                               [ ]{0,'.$less_than_tab.'}       # Allowed whitespace.
+                               ([-:]+[ ]*[|][-| :]*) \n        # $2: Header underline
+                               
+                               (                                                       # $3: Cells
+                                       (?>
+                                               .* [|] .* \n            # Row content
+                                       )*
+                               )
+                               (?=\n|\Z)                                       # Stop at final double newline.
+                       }xm',
+                       array($this, '_DoTable_callback'), $text);
+
+               return $text;
+       }
+       protected function _doTable_leadingPipe_callback($matches) {
+               $head           = $matches[1];
+               $underline      = $matches[2];
+               $content        = $matches[3];
+               
+               # Remove leading pipe for each row.
+               $content        = preg_replace('/^ *[|]/m', '', $content);
+               
+               return $this->_doTable_callback(array($matches[0], $head, $underline, $content));
+       }
+       protected function _doTable_makeAlignAttr($alignname)
+       {
+               if (empty($this->table_align_class_tmpl))
+                       return " align=\"$alignname\"";
+
+               $classname = str_replace('%%', $alignname, $this->table_align_class_tmpl);
+               return " class=\"$classname\"";
+       }
+       protected function _doTable_callback($matches) {
+               $head           = $matches[1];
+               $underline      = $matches[2];
+               $content        = $matches[3];
+
+               # Remove any tailing pipes for each line.
+               $head           = preg_replace('/[|] *$/m', '', $head);
+               $underline      = preg_replace('/[|] *$/m', '', $underline);
+               $content        = preg_replace('/[|] *$/m', '', $content);
+               
+               # Reading alignement from header underline.
+               $separators     = preg_split('/ *[|] */', $underline);
+               foreach ($separators as $n => $s) {
+                       if (preg_match('/^ *-+: *$/', $s))
+                               $attr[$n] = $this->_doTable_makeAlignAttr('right');
+                       else if (preg_match('/^ *:-+: *$/', $s))
+                               $attr[$n] = $this->_doTable_makeAlignAttr('center');
+                       else if (preg_match('/^ *:-+ *$/', $s))
+                               $attr[$n] = $this->_doTable_makeAlignAttr('left');
+                       else
+                               $attr[$n] = '';
+               }
+               
+               # Parsing span elements, including code spans, character escapes, 
+               # and inline HTML tags, so that pipes inside those gets ignored.
+               $head           = $this->parseSpan($head);
+               $headers        = preg_split('/ *[|] */', $head);
+               $col_count      = count($headers);
+               $attr       = array_pad($attr, $col_count, '');
+               
+               # Write column headers.
+               $text = "<table>\n";
+               $text .= "<thead>\n";
+               $text .= "<tr>\n";
+               foreach ($headers as $n => $header)
+                       $text .= "  <th$attr[$n]>".$this->runSpanGamut(trim($header))."</th>\n";
+               $text .= "</tr>\n";
+               $text .= "</thead>\n";
+               
+               # Split content by row.
+               $rows = explode("\n", trim($content, "\n"));
+               
+               $text .= "<tbody>\n";
+               foreach ($rows as $row) {
+                       # Parsing span elements, including code spans, character escapes, 
+                       # and inline HTML tags, so that pipes inside those gets ignored.
+                       $row = $this->parseSpan($row);
+                       
+                       # Split row by cell.
+                       $row_cells = preg_split('/ *[|] */', $row, $col_count);
+                       $row_cells = array_pad($row_cells, $col_count, '');
+                       
+                       $text .= "<tr>\n";
+                       foreach ($row_cells as $n => $cell)
+                               $text .= "  <td$attr[$n]>".$this->runSpanGamut(trim($cell))."</td>\n";
+                       $text .= "</tr>\n";
+               }
+               $text .= "</tbody>\n";
+               $text .= "</table>";
+               
+               return $this->hashBlock($text) . "\n";
+       }
+
+       
+       protected function doDefLists($text) {
+       #
+       # Form HTML definition lists.
+       #
+               $less_than_tab = $this->tab_width - 1;
+
+               # Re-usable pattern to match any entire dl list:
+               $whole_list_re = '(?>
+                       (                                                               # $1 = whole list
+                         (                                                             # $2
+                               [ ]{0,'.$less_than_tab.'}
+                               ((?>.*\S.*\n)+)                              # $3 = defined term
+                               \n?
+                               [ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
+                         )
+                         (?s:.+?)
+                         (                                                             # $4
+                                 \z
+                               |
+                                 \n{2,}
+                                 (?=\S)
+                                 (?!                                           # Negative lookahead for another term
+                                       [ ]{0,'.$less_than_tab.'}
+                                       (?: \S.*\n )+?                  # defined term
+                                       \n?
+                                       [ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
+                                 )
+                                 (?!                                           # Negative lookahead for another definition
+                                       [ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
+                                 )
+                         )
+                       )
+               )'; // mx
+
+               $text = preg_replace_callback('{
+                               (?>\A\n?|(?<=\n\n))
+                               '.$whole_list_re.'
+                       }mx',
+                       array($this, '_doDefLists_callback'), $text);
+
+               return $text;
+       }
+       protected function _doDefLists_callback($matches) {
+               # Re-usable patterns to match list item bullets and number markers:
+               $list = $matches[1];
+               
+               # Turn double returns into triple returns, so that we can make a
+               # paragraph for the last item in a list, if necessary:
+               $result = trim($this->processDefListItems($list));
+               $result = "<dl>\n" . $result . "\n</dl>";
+               return $this->hashBlock($result) . "\n\n";
+       }
+
+
+       protected function processDefListItems($list_str) {
+       #
+       #       Process the contents of a single definition list, splitting it
+       #       into individual term and definition list items.
+       #
+               $less_than_tab = $this->tab_width - 1;
+               
+               # trim trailing blank lines:
+               $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
+
+               # Process definition terms.
+               $list_str = preg_replace_callback('{
+                       (?>\A\n?|\n\n+)                                      # leading line
+                       (                                                               # definition terms = $1
+                               [ ]{0,'.$less_than_tab.'}       # leading whitespace
+                               (?!\:[ ]|[ ])                           # negative lookahead for a definition
+                                                                                       #   mark (colon) or more whitespace.
+                               (?> \S.* \n)+?                               # actual term (not whitespace). 
+                       )                       
+                       (?=\n?[ ]{0,3}:[ ])                             # lookahead for following line feed 
+                                                                                       #   with a definition mark.
+                       }xm',
+                       array($this, '_processDefListItems_callback_dt'), $list_str);
+
+               # Process actual definitions.
+               $list_str = preg_replace_callback('{
+                       \n(\n+)?                                                # leading line = $1
+                       (                                                               # marker space = $2
+                               [ ]{0,'.$less_than_tab.'}       # whitespace before colon
+                               \:[ ]+                                          # definition mark (colon)
+                       )
+                       ((?s:.+?))                                              # definition text = $3
+                       (?= \n+                                                 # stop at next definition mark,
+                               (?:                                                     # next term or end of text
+                                       [ ]{0,'.$less_than_tab.'} \:[ ] |
+                                       <dt> | \z
+                               )                                               
+                       )                                       
+                       }xm',
+                       array($this, '_processDefListItems_callback_dd'), $list_str);
+
+               return $list_str;
+       }
+       protected function _processDefListItems_callback_dt($matches) {
+               $terms = explode("\n", trim($matches[1]));
+               $text = '';
+               foreach ($terms as $term) {
+                       $term = $this->runSpanGamut(trim($term));
+                       $text .= "\n<dt>" . $term . "</dt>";
+               }
+               return $text . "\n";
+       }
+       protected function _processDefListItems_callback_dd($matches) {
+               $leading_line   = $matches[1];
+               $marker_space   = $matches[2];
+               $def                    = $matches[3];
+
+               if ($leading_line || preg_match('/\n{2,}/', $def)) {
+                       # Replace marker with the appropriate whitespace indentation
+                       $def = str_repeat(' ', strlen($marker_space)) . $def;
+                       $def = $this->runBlockGamut($this->outdent($def . "\n\n"));
+                       $def = "\n". $def ."\n";
+               }
+               else {
+                       $def = rtrim($def);
+                       $def = $this->runSpanGamut($this->outdent($def));
+               }
+
+               return "\n<dd>" . $def . "</dd>\n";
+       }
+
+
+       protected function doFencedCodeBlocks($text) {
+       #
+       # Adding the fenced code block syntax to regular Markdown:
+       #
+       # ~~~
+       # Code block
+       # ~~~
+       #
+               $less_than_tab = $this->tab_width;
+               
+               $text = preg_replace_callback('{
+                               (?:\n|\A)
+                               # 1: Opening marker
+                               (
+                                       (?:~{3,}|`{3,}) # 3 or more tildes/backticks.
+                               )
+                               [ ]*
+                               (?:
+                                       \.?([-_:a-zA-Z0-9]+) # 2: standalone class name
+                               )?
+                               [ ]*
+                               (?:
+                                       '.$this->id_class_attr_catch_re.' # 3: Extra attributes
+                               )?
+                               [ ]* \n # Whitespace and newline following marker.
+                               
+                               # 4: Content
+                               (
+                                       (?>
+                                               (?!\1 [ ]* \n)  # Not a closing marker.
+                                               .*\n+
+                                       )+
+                               )
+                               
+                               # Closing marker.
+                               \1 [ ]* (?= \n )
+                       }xm',
+                       array($this, '_doFencedCodeBlocks_callback'), $text);
+
+               return $text;
+       }
+       protected function _doFencedCodeBlocks_callback($matches) {
+               $classname =& $matches[2];
+               $attrs     =& $matches[3];
+               $codeblock = $matches[4];
+
+               if ($this->code_block_content_func) {
+                       $codeblock = call_user_func($this->code_block_content_func, $codeblock, $classname);
+               } else {
+                       $codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
+               }
+
+               $codeblock = preg_replace_callback('/^\n+/',
+                       array($this, '_doFencedCodeBlocks_newlines'), $codeblock);
+
+               $classes = array();
+               if ($classname != "") {
+                       if ($classname{0} == '.')
+                               $classname = substr($classname, 1);
+                       $classes[] = $this->code_class_prefix.$classname;
+               }
+               $attr_str = $this->doExtraAttributes($this->code_attr_on_pre ? "pre" : "code", $attrs, null, $classes);
+               $pre_attr_str  = $this->code_attr_on_pre ? $attr_str : '';
+               $code_attr_str = $this->code_attr_on_pre ? '' : $attr_str;
+               $codeblock  = "<pre$pre_attr_str><code$code_attr_str>$codeblock</code></pre>";
+               
+               return "\n\n".$this->hashBlock($codeblock)."\n\n";
+       }
+       protected function _doFencedCodeBlocks_newlines($matches) {
+               return str_repeat("<br$this->empty_element_suffix", 
+                       strlen($matches[0]));
+       }
+
+
+       #
+       # Redefining emphasis markers so that emphasis by underscore does not
+       # work in the middle of a word.
+       #
+       protected $em_relist = array(
+               ''  => '(?:(?<!\*)\*(?!\*)|(?<![a-zA-Z0-9_])_(?!_))(?![\.,:;]?\s)',
+               '*' => '(?<![\s*])\*(?!\*)',
+               '_' => '(?<![\s_])_(?![a-zA-Z0-9_])',
+               );
+       protected $strong_relist = array(
+               ''   => '(?:(?<!\*)\*\*(?!\*)|(?<![a-zA-Z0-9_])__(?!_))(?![\.,:;]?\s)',
+               '**' => '(?<![\s*])\*\*(?!\*)',
+               '__' => '(?<![\s_])__(?![a-zA-Z0-9_])',
+               );
+       protected $em_strong_relist = array(
+               ''    => '(?:(?<!\*)\*\*\*(?!\*)|(?<![a-zA-Z0-9_])___(?!_))(?![\.,:;]?\s)',
+               '***' => '(?<![\s*])\*\*\*(?!\*)',
+               '___' => '(?<![\s_])___(?![a-zA-Z0-9_])',
+               );
+
+
+       protected function formParagraphs($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) {
+                       $value = trim($this->runSpanGamut($value));
+                       
+                       # Check if this should be enclosed in a paragraph.
+                       # Clean tag hashes & block tag hashes are left alone.
+                       $is_p = !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value);
+                       
+                       if ($is_p) {
+                               $value = "<p>$value</p>";
+                       }
+                       $grafs[$key] = $value;
+               }
+               
+               # Join grafs in one text, then unhash HTML tags. 
+               $text = implode("\n\n", $grafs);
+               
+               # Finish by removing any tag hashes still present in $text.
+               $text = $this->unhash($text);
+               
+               return $text;
+       }
+       
+       
+       ### Footnotes
+       
+       protected function stripFootnotes($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.'}\[\^(.+?)\][ ]?:      # note_id = $1
+                         [ ]*
+                         \n?                                   # maybe *one* newline
+                       (                                               # text = $2 (no blank lines allowed)
+                               (?:                                     
+                                       .+                              # actual text
+                               |
+                                       \n                              # newlines but 
+                                       (?!\[.+?\][ ]?:\s)# negative lookahead for footnote or link definition marker.
+                                       (?!\n+[ ]{0,3}\S)# ensure line is not blank and followed 
+                                                                       # by non-indented content
+                               )*
+                       )               
+                       }xm',
+                       array($this, '_stripFootnotes_callback'),
+                       $text);
+               return $text;
+       }
+       protected function _stripFootnotes_callback($matches) {
+               $note_id = $this->fn_id_prefix . $matches[1];
+               $this->footnotes[$note_id] = $this->outdent($matches[2]);
+               return ''; # String that will replace the block
+       }
+
+
+       protected function doFootnotes($text) {
+       #
+       # Replace footnote references in $text [^id] with a special text-token 
+       # which will be replaced by the actual footnote marker in appendFootnotes.
+       #
+               if (!$this->in_anchor) {
+                       $text = preg_replace('{\[\^(.+?)\]}', "F\x1Afn:\\1\x1A:", $text);
+               }
+               return $text;
+       }
+
+       
+       protected function appendFootnotes($text) {
+       #
+       # Append footnote list to text.
+       #
+               $text = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}', 
+                       array($this, '_appendFootnotes_callback'), $text);
+       
+               if (!empty($this->footnotes_ordered)) {
+                       $text .= "\n\n";
+                       $text .= "<div class=\"footnotes\">\n";
+                       $text .= "<hr". $this->empty_element_suffix ."\n";
+                       $text .= "<ol>\n\n";
+
+                       $attr = "";
+                       if ($this->fn_backlink_class != "") {
+                               $class = $this->fn_backlink_class;
+                               $class = $this->encodeAttribute($class);
+                               $attr .= " class=\"$class\"";
+                       }
+                       if ($this->fn_backlink_title != "") {
+                               $title = $this->fn_backlink_title;
+                               $title = $this->encodeAttribute($title);
+                               $attr .= " title=\"$title\"";
+                       }
+                       $backlink_text = $this->fn_backlink_html;
+                       $num = 0;
+                       
+                       while (!empty($this->footnotes_ordered)) {
+                               $footnote = reset($this->footnotes_ordered);
+                               $note_id = key($this->footnotes_ordered);
+                               unset($this->footnotes_ordered[$note_id]);
+                               $ref_count = $this->footnotes_ref_count[$note_id];
+                               unset($this->footnotes_ref_count[$note_id]);
+                               unset($this->footnotes[$note_id]);
+                               
+                               $footnote .= "\n"; # Need to append newline before parsing.
+                               $footnote = $this->runBlockGamut("$footnote\n");                           
+                               $footnote = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}', 
+                                       array($this, '_appendFootnotes_callback'), $footnote);
+                               
+                               $attr = str_replace("%%", ++$num, $attr);
+                               $note_id = $this->encodeAttribute($note_id);
+
+                               # Prepare backlink, multiple backlinks if multiple references
+                               $backlink = "<a href=\"#fnref:$note_id\"$attr>$backlink_text</a>";
+                               for ($ref_num = 2; $ref_num <= $ref_count; ++$ref_num) {
+                                       $backlink .= " <a href=\"#fnref$ref_num:$note_id\"$attr>$backlink_text</a>";
+                               }
+                               # Add backlink to last paragraph; create new paragraph if needed.
+                               if (preg_match('{</p>$}', $footnote)) {
+                                       $footnote = substr($footnote, 0, -4) . "&#160;$backlink</p>";
+                               } else {
+                                       $footnote .= "\n\n<p>$backlink</p>";
+                               }
+                               
+                               $text .= "<li id=\"fn:$note_id\">\n";
+                               $text .= $footnote . "\n";
+                               $text .= "</li>\n\n";
+                       }
+                       
+                       $text .= "</ol>\n";
+                       $text .= "</div>";
+               }
+               return $text;
+       }
+       protected function _appendFootnotes_callback($matches) {
+               $node_id = $this->fn_id_prefix . $matches[1];
+               
+               # Create footnote marker only if it has a corresponding footnote *and*
+               # the footnote hasn't been used by another marker.
+               if (isset($this->footnotes[$node_id])) {
+                       $num =& $this->footnotes_numbers[$node_id];
+                       if (!isset($num)) {
+                               # Transfer footnote content to the ordered list and give it its
+                               # number
+                               $this->footnotes_ordered[$node_id] = $this->footnotes[$node_id];
+                               $this->footnotes_ref_count[$node_id] = 1;
+                               $num = $this->footnote_counter++;
+                               $ref_count_mark = '';
+                       } else {
+                               $ref_count_mark = $this->footnotes_ref_count[$node_id] += 1;
+                       }
+
+                       $attr = "";
+                       if ($this->fn_link_class != "") {
+                               $class = $this->fn_link_class;
+                               $class = $this->encodeAttribute($class);
+                               $attr .= " class=\"$class\"";
+                       }
+                       if ($this->fn_link_title != "") {
+                               $title = $this->fn_link_title;
+                               $title = $this->encodeAttribute($title);
+                               $attr .= " title=\"$title\"";
+                       }
+                       
+                       $attr = str_replace("%%", $num, $attr);
+                       $node_id = $this->encodeAttribute($node_id);
+                       
+                       return
+                               "<sup id=\"fnref$ref_count_mark:$node_id\">".
+                               "<a href=\"#fn:$node_id\"$attr>$num</a>".
+                               "</sup>";
+               }
+               
+               return "[^".$matches[1]."]";
+       }
+               
+       
+       ### Abbreviations ###
+       
+       protected function stripAbbreviations($text) {
+       #
+       # Strips abbreviations from text, stores 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.'}\*\[(.+?)\][ ]?:      # abbr_id = $1
+                       (.*)                                    # text = $2 (no blank lines allowed)    
+                       }xm',
+                       array($this, '_stripAbbreviations_callback'),
+                       $text);
+               return $text;
+       }
+       protected function _stripAbbreviations_callback($matches) {
+               $abbr_word = $matches[1];
+               $abbr_desc = $matches[2];
+               if ($this->abbr_word_re)
+                       $this->abbr_word_re .= '|';
+               $this->abbr_word_re .= preg_quote($abbr_word);
+               $this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
+               return ''; # String that will replace the block
+       }
+       
+       
+       protected function doAbbreviations($text) {
+       #
+       # Find defined abbreviations in text and wrap them in <abbr> elements.
+       #
+               if ($this->abbr_word_re) {
+                       // cannot use the /x modifier because abbr_word_re may 
+                       // contain significant spaces:
+                       $text = preg_replace_callback('{'.
+                               '(?<![\w\x1A])'.
+                               '(?:'.$this->abbr_word_re.')'.
+                               '(?![\w\x1A])'.
+                               '}', 
+                               array($this, '_doAbbreviations_callback'), $text);
+               }
+               return $text;
+       }
+       protected function _doAbbreviations_callback($matches) {
+               $abbr = $matches[0];
+               if (isset($this->abbr_desciptions[$abbr])) {
+                       $desc = $this->abbr_desciptions[$abbr];
+                       if (empty($desc)) {
+                               return $this->hashPart("<abbr>$abbr</abbr>");
+                       } else {
+                               $desc = $this->encodeAttribute($desc);
+                               return $this->hashPart("<abbr title=\"$desc\">$abbr</abbr>");
+                       }
+               } else {
+                       return $matches[0];
+               }
+       }
+}
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownExtra.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownInterfaceincphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.inc.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.inc.php                               (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.inc.php 2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,9 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+
+# Use this file if you cannot use class autoloading. It will include all the
+# files needed for the MarkdownInterface interface.
+#
+# Take a look at the PSR-0-compatible class autoloading implementation
+# in the Readme.php file if you want a simple autoloader setup.
+
+require_once dirname(__FILE__) . '/MarkdownInterface.php';
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.inc.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160MichelfMarkdownInterfacephp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.php                           (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.php     2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,34 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+#
+# Markdown  -  A text-to-HTML conversion tool for web writers
+#
+# PHP Markdown
+# Copyright (c) 2004-2015 Michel Fortin
+# <https://michelf.ca/projects/php-markdown/>
+#
+# Original Markdown
+# Copyright (c) 2004-2006 John Gruber
+# <https://daringfireball.net/projects/markdown/>
+#
+namespace Michelf;
+
+
+#
+# Markdown Parser Interface
+#
+
+interface MarkdownInterface {
+
+  #
+  # Initialize the parser and return the result of its transform method.
+  # This will work fine for derived classes too.
+  #
+  public static function defaultTransform($text);
+
+  #
+  # Main function. Performs some preprocessing on the input text
+  # and pass it through the document gamut.
+  #
+  public function transform($text);
+
+}
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Michelf/MarkdownInterface.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsplugindirectorylibsmichelfphpmarkdown160Readmemd"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Readme.md</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Readme.md                               (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/libs/michelf-php-markdown-1.6.0/Readme.md 2016-02-26 02:26:25 UTC (rev 2638)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,358 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+PHP Markdown
+============
+
+PHP Markdown Lib 1.6.0 - 23 Dec 2015
+
+by Michel Fortin  
+<https://michelf.ca/>
+
+based on Markdown by John Gruber  
+<https://daringfireball.net/>
+
+
+Introduction
+------------
+
+This is a library package that includes the PHP Markdown parser and its 
+sibling PHP Markdown Extra with additional features.
+
+Markdown is a text-to-HTML conversion tool for web writers. Markdown
+allows you to write using an easy-to-read, easy-to-write plain text
+format, then convert it to structurally valid XHTML (or HTML).
+
+"Markdown" is actually two things: a plain text markup syntax, and a 
+software tool, originally written in Perl, that converts the plain text 
+markup to HTML. PHP Markdown is a port to PHP of the original Markdown 
+program by John Gruber.
+
+*      [Full documentation of the Markdown syntax](<https://daringfireball.net/projects/markdown/>)  
+       — Daring Fireball (John Gruber)
+*      [Markdown Extra syntax additions](<https://michelf.ca/projects/php-markdown/extra/>)  
+       — Michel Fortin
+
+
+Requirement
+-----------
+
+This library package requires PHP 5.3 or later.
+
+Note: The older plugin/library hybrid package for PHP Markdown and
+PHP Markdown Extra is still maintained and will work with PHP 4.0.5 and later.
+
+Before PHP 5.3.7, pcre.backtrack_limit defaults to 100 000, which is too small
+in many situations. You might need to set it to higher values. Later PHP 
+releases defaults to 1 000 000, which is usually fine.
+
+
+Usage
+-----
+
+This library package is meant to be used with class autoloading. For autoloading 
+to work, your project needs have setup a PSR-0-compatible autoloader. See the 
+included Readme.php file for a minimal autoloader setup. (If you cannot use 
+autoloading, see below.)
+
+With class autoloading in place, putting the 'Michelf' folder in your 
+include path should be enough for this to work:
+
+       use \Michelf\Markdown;
+       $my_html = Markdown::defaultTransform($my_text);
+
+Markdown Extra syntax is also available the same way:
+
+       use \Michelf\MarkdownExtra;
+       $my_html = MarkdownExtra::defaultTransform($my_text);
+
+If you wish to use PHP Markdown with another text filter function 
+built to parse HTML, you should filter the text *after* the `transform`
+function call. This is an example with [PHP SmartyPants][psp]:
+
+       use \Michelf\Markdown, \Michelf\SmartyPants;
+       $my_html = Markdown::defaultTransform($my_text);
+       $my_html = SmartyPants::defaultTransform($my_html);
+
+All these examples are using the static `defaultTransform` static function 
+found inside the parser class. If you want to customize the parser 
+configuration, you can also instantiate it directly and change some 
+configuration variables:
+
+       use \Michelf\MarkdownExtra;
+       $parser = new MarkdownExtra;
+       $parser->fn_id_prefix = "post22-";
+       $my_html = $parser->transform($my_text);
+
+To learn more, see the full list of [configuration variables].
+
+ [configuration variables]: https://michelf.ca/projects/php-markdown/configuration/
+
+
+### Usage without an autoloader
+
+If you cannot use class autoloading, you can still use `include` or `require` 
+to access the parser. To load the `\Michelf\Markdown` parser, do it this way:
+
+       require_once 'Michelf/Markdown.inc.php';
+
+Or, if you need the `\Michelf\MarkdownExtra` parser:
+
+       require_once 'Michelf/MarkdownExtra.inc.php';
+
+While the plain `.php` files depend on autoloading to work correctly, using the
+`.inc.php` files instead will eagerly load the dependencies that would be 
+loaded on demand if you were using autoloading.
+
+
+Public API and Versioning Policy
+---------------------------------
+
+Version numbers are of the form *major*.*minor*.*patch*.
+
+The public API of PHP Markdown consist of the two parser classes `Markdown`
+and `MarkdownExtra`, their constructors, the `transform` and `defaultTransform`
+functions and their configuration variables. The public API is stable for
+a given major version number. It might get additions when the minor version
+number increments.
+
+**Protected members are not considered public API.** This is unconventional 
+and deserves an explanation. Incrementing the major version number every time 
+the underlying implementation of something changes is going to give
+nonessential version numbers for the vast majority of people who just use the
+parser.  Protected members are meant to create parser subclasses that behave in
+different ways. Very few people create parser subclasses. I don't want to 
+discourage it by making everything private, but at the same time I can't 
+guarantee any stable hook between versions if you use protected members.
+
+**Syntax changes** will increment the minor number for new features, and the 
+patch number for small corrections. A *new feature* is something that needs a 
+change in the syntax documentation. Note that since PHP Markdown Lib includes
+two parsers, a syntax change for either of them will increment the minor 
+number. Also note that there is nothing perfectly backward-compatible with the
+Markdown syntax: all inputs are always valid, so new features always replace
+something that was previously legal, although generally nonsensical to do.
+
+
+Bugs
+----
+
+To file bug reports please send email to:
+<michel.fortin@michelf.ca>
+
+Please include with your report: (1) the example input; (2) the output you
+expected; (3) the output PHP Markdown actually produced.
+
+If you have a problem where Markdown gives you an empty result, first check 
+that the backtrack limit is not too low by running `php --info | grep pcre`.
+See Installation and Requirement above for details.
+
+
+Development and Testing
+-----------------------
+
+Pull requests for fixing bugs are welcome. Proposed new features are
+going meticulously reviewed -- taking into account backward compatibility, 
+potential side effects, and future extensibility -- before deciding on
+acceptance or rejection.
+
+If you make a pull request that includes changes to the parser please add 
+tests for what is being changed to [MDTest][] and make a pull request there 
+too.
+
+ [MDTest]: https://github.com/michelf/mdtest/
+
+
+Donations
+---------
+
+If you wish to make a donation that will help me devote more time to 
+PHP Markdown, please visit [michelf.ca/donate] or send Bitcoin to
+[1HiuX34czvVPPdhXbUAsAu7pZcesniDCGH].
+
+ [michelf.ca/donate]: https://michelf.ca/donate/#!Thanks%20for%20PHP%20Markdown
+ [1HiuX34czvVPPdhXbUAsAu7pZcesniDCGH]: bitcoin:1HiuX34czvVPPdhXbUAsAu7pZcesniDCGH
+
+
+Version History
+---------------
+
+PHP Markdown Lib 1.6.0 (23 Dec 2015)  
+
+Note: this version was incorrectly released as 1.5.1 on Dec 22, a number 
+that contradicted the versioning policy.
+
+*      For fenced code blocks in Markdown Extra, can now set a class name for the 
+       code block's language before the special attribute block. Previously, this 
+       class name was only allowed in the absence of the special attribute block.
+
+*      Added a `code_block_content_func` configuration variable which takes a 
+       function that will convert the content of the code block to HTML. This is 
+       most useful for syntax highlighting. For fenced code blocks in Markdown 
+       Extra, the function has access to the language class name (the one outside 
+       of the special attribute block). Credits to Mario Konrad for providing the 
+       implementation.
+
+*      The curled arrow character for the backlink in footnotes is now followed
+       by a Unicode variant selector to prevent it from being displayed in emoji
+       form on iOS.
+
+       Note that in older browsers the variant selector is often interpreted as a 
+       separate character, making it visible after the arrow. So there is now a 
+       also a `fn_backlink_html` configuration variable that can be used to set 
+       the link text to something else. Credits to Dana for providing the 
+       implementation.
+
+*      Fixed an issue in MarkdownExtra where long header lines followed by a
+       special attribute block would hit the backtrack limit an cause an empty
+       string to be returned.
+
+
+PHP Markdown Lib 1.5.0 (1 Mar 2015)
+
+*      Added the ability start ordered lists with a number different from 1 and
+       and have that reflected in the HTML output. This can be enabled with
+       the `enhanced_ordered_lists` configuration variable for the Markdown 
+       parser; it is enabled by default for Markdown Extra.
+       Credits to Matt Gorle for providing the implementation.
+
+*      Added the ability to insert custom HTML attributes with simple values 
+       everywhere an extra attribute block is allowed (links, images, headers).
+       The value must be unquoted, cannot contains spaces and is limited to 
+       alphanumeric ASCII characters.
+       Credits to Peter Droogmans for providing the implementation.
+
+*      Added a `header_id_func` configuration variable which takes a function
+       that can generate an `id` attribute value from the header text.
+       Credits to Evert Pot for providing the implementation.
+
+*      Added a `url_filter_func` configuration variable which takes a function
+       that can rewrite any link or image URL to something different.
+
+
+PHP Markdown Lib 1.4.1 (4 May 2014)
+
+*      The HTML block parser will now treat `<figure>` as a block-level element
+       (as it should) and no longer wrap it in `<p>` or parse it's content with 
+       the as Markdown syntax (although with Extra you can use `markdown="1"`
+       if you wish to use the Markdown syntax inside it).
+
+*      The content of `<style>` elements will now be left alone, its content
+       won't be interpreted as Markdown.
+
+*      Corrected an bug where some inline links with spaces in them would not
+       work even when surounded with angle brackets:
+       
+               [link](<s p a c e s>)
+
+*      Fixed an issue where email addresses with quotes in them would not always
+       have the quotes escaped in the link attribute, causing broken links (and
+       invalid HTML).
+
+*      Fixed the case were a link definition following a footnote definition would
+       be swallowed by the footnote unless it was separated by a blank line.
+
+
+PHP Markdown Lib 1.4.0 (29 Nov 2013)
+
+*      Added support for the `tel:` URL scheme in automatic links.
+
+               <tel:+1-111-111-1111>
+       
+       It gets converted to this (note the `tel:` prefix becomes invisible):
+       
+               <a href="tel:+1-111-111-1111">+1-111-111-1111</a>
+
+*      Added backtick fenced code blocks to MarkdownExtra, originally from
+       Github-Flavored Markdown.
+
+*      Added an interface called MarkdownInterface implemented by both
+       the Markdown and MarkdownExtra parsers. You can use the interface if
+       you want to create a mockup parser object for unit testing.
+
+*      For those of you who cannot use class autoloading, you can now
+       include `Michelf/Markdown.inc.php` or `Michelf/MarkdownExtra.inc.php` (note 
+       the     `.inc.php` extension) to automatically include other files required
+       by the parser.
+
+
+PHP Markdown Lib 1.3 (11 Apr 2013)
+
+This is the first release of PHP Markdown Lib. This package requires PHP 
+version 5.3 or later and is designed to work with PSR-0 autoloading and, 
+optionally with Composer. Here is a list of the changes since 
+PHP Markdown Extra 1.2.6:
+
+*      Plugin interface for WordPress and other systems is no longer present in
+       the Lib package. The classic package is still available if you need it:
+       <https://michelf.ca/projects/php-markdown/classic/>
+
+*      Added `public` and `protected` protection attributes, plus a section about
+       what is "public API" and what isn't in the Readme file.
+
+*      Changed HTML output for footnotes: now instead of adding `rel` and `rev`
+       attributes, footnotes links have the class name `footnote-ref` and
+       backlinks `footnote-backref`.
+
+*      Fixed some regular expressions to make PCRE not shout warnings about POSIX
+       collation classes (dependent on your version of PCRE).
+
+*      Added optional class and id attributes to images and links using the same
+       syntax as for headers:
+
+               [link](url){#id .class}  
+               ![img](url){#id .class}
+       
+       It work too for reference-style links and images. In this case you need
+       to put those attributes at the reference definition:
+
+               [link][linkref] or [linkref]  
+               ![img][linkref]
+               
+               [linkref]: url "optional title" {#id .class}
+
+*      Fixed a PHP notice message triggered when some table column separator 
+       markers are missing on the separator line below column headers.
+
+*      Fixed a small mistake that could cause the parser to retain an invalid
+       state related to parsing links across multiple runs. This was never 
+       observed (that I know of), but it's still worth fixing.
+
+
+Copyright and License
+---------------------
+
+PHP Markdown Lib
+Copyright (c) 2004-2015 Michel Fortin
+<https://michelf.ca/>  
+All rights reserved.
+
+Based on Markdown  
+Copyright (c) 2003-2005 John Gruber   
+<https://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.
</ins></span></pre>
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