Update auf MediaWiki 1.12.0

1 files changed, 4942 insertions, 0 deletions

diff --git a/includes/Parser_OldPP.php b/includes/Parser_OldPP.php
new file mode 100644
index 00000000..c10de257
--- /dev/null
+++ b/includes/Parser_OldPP.php
@@ -0,0 +1,4942 @@
+<?php
+/**
+ * Parser with old preprocessor
+ */
+class Parser_OldPP
+{
+	/**
+	 * Update this version number when the ParserOutput format
+	 * changes in an incompatible way, so the parser cache
+	 * can automatically discard old data.
+	 */
+	const VERSION = '1.6.4';
+
+	# Flags for Parser::setFunctionHook
+	# Also available as global constants from Defines.php
+	const SFH_NO_HASH = 1;
+
+	# Constants needed for external link processing
+	# Everything except bracket, space, or control characters
+	const EXT_LINK_URL_CLASS = '[^][<>"\\x00-\\x20\\x7F]';
+	const EXT_IMAGE_REGEX = '/^(http:\/\/|https:\/\/)([^][<>"\\x00-\\x20\\x7F]+)\\/([A-Za-z0-9_.,~%\\-+&;#*?!=()@\\x80-\\xFF]+)\\.((?i)gif|png|jpg|jpeg)$/S';
+
+	// State constants for the definition list colon extraction
+	const COLON_STATE_TEXT = 0;
+	const COLON_STATE_TAG = 1;
+	const COLON_STATE_TAGSTART = 2;
+	const COLON_STATE_CLOSETAG = 3;
+	const COLON_STATE_TAGSLASH = 4;
+	const COLON_STATE_COMMENT = 5;
+	const COLON_STATE_COMMENTDASH = 6;
+	const COLON_STATE_COMMENTDASHDASH = 7;
+
+	// Allowed values for $this->mOutputType
+	// Parameter to startExternalParse().
+	const OT_HTML = 1;
+	const OT_WIKI = 2;
+	const OT_PREPROCESS = 3;
+	const OT_MSG = 4;
+
+	/**#@+
+	 * @private
+	 */
+	# Persistent:
+	var $mTagHooks, $mTransparentTagHooks, $mFunctionHooks, $mFunctionSynonyms, $mVariables,
+		$mImageParams, $mImageParamsMagicArray, $mExtLinkBracketedRegex;
+	
+	# Cleared with clearState():
+	var $mOutput, $mAutonumber, $mDTopen, $mStripState;
+	var $mIncludeCount, $mArgStack, $mLastSection, $mInPre;
+	var $mInterwikiLinkHolders, $mLinkHolders, $mUniqPrefix;
+	var $mIncludeSizes, $mDefaultSort;
+	var $mTemplates,	// cache of already loaded templates, avoids
+		                // multiple SQL queries for the same string
+	    $mTemplatePath;	// stores an unsorted hash of all the templates already loaded
+		                // in this path. Used for loop detection.
+
+	# Temporary
+	# These are variables reset at least once per parse regardless of $clearState
+	var $mOptions,      // ParserOptions object
+		$mTitle,        // Title context, used for self-link rendering and similar things
+		$mOutputType,   // Output type, one of the OT_xxx constants
+		$ot,            // Shortcut alias, see setOutputType()
+		$mRevisionId,   // ID to display in {{REVISIONID}} tags
+		$mRevisionTimestamp, // The timestamp of the specified revision ID
+		$mRevIdForTs;   // The revision ID which was used to fetch the timestamp
+
+	/**#@-*/
+
+	/**
+	 * Constructor
+	 *
+	 * @public
+	 */
+	function __construct( $conf = array() ) {
+		$this->mTagHooks = array();
+		$this->mTransparentTagHooks = array();
+		$this->mFunctionHooks = array();
+		$this->mFunctionSynonyms = array( 0 => array(), 1 => array() );
+		$this->mFirstCall = true;
+		$this->mExtLinkBracketedRegex = '/\[(\b(' . wfUrlProtocols() . ')'.
+			'[^][<>"\\x00-\\x20\\x7F]+) *([^\]\\x0a\\x0d]*?)\]/S';
+	}
+	
+	/**
+	 * Do various kinds of initialisation on the first call of the parser
+	 */
+	function firstCallInit() {
+		if ( !$this->mFirstCall ) {
+			return;
+		}
+		$this->mFirstCall = false;
+		
+		wfProfileIn( __METHOD__ );
+		global $wgAllowDisplayTitle, $wgAllowSlowParserFunctions;
+		
+		$this->setHook( 'pre', array( $this, 'renderPreTag' ) );
+		
+		# Syntax for arguments (see self::setFunctionHook):
+		#  "name for lookup in localized magic words array",
+		#  function callback,
+		#  optional SFH_NO_HASH to omit the hash from calls (e.g. {{int:...}
+		#    instead of {{#int:...}})
+		$this->setFunctionHook( 'int',              array( 'CoreParserFunctions', 'intFunction'      ), SFH_NO_HASH );
+		$this->setFunctionHook( 'ns',               array( 'CoreParserFunctions', 'ns'               ), SFH_NO_HASH );
+		$this->setFunctionHook( 'urlencode',        array( 'CoreParserFunctions', 'urlencode'        ), SFH_NO_HASH );
+		$this->setFunctionHook( 'lcfirst',          array( 'CoreParserFunctions', 'lcfirst'          ), SFH_NO_HASH );
+		$this->setFunctionHook( 'ucfirst',          array( 'CoreParserFunctions', 'ucfirst'          ), SFH_NO_HASH );
+		$this->setFunctionHook( 'lc',               array( 'CoreParserFunctions', 'lc'               ), SFH_NO_HASH );
+		$this->setFunctionHook( 'uc',               array( 'CoreParserFunctions', 'uc'               ), SFH_NO_HASH );
+		$this->setFunctionHook( 'localurl',         array( 'CoreParserFunctions', 'localurl'         ), SFH_NO_HASH );
+		$this->setFunctionHook( 'localurle',        array( 'CoreParserFunctions', 'localurle'        ), SFH_NO_HASH );
+		$this->setFunctionHook( 'fullurl',          array( 'CoreParserFunctions', 'fullurl'          ), SFH_NO_HASH );
+		$this->setFunctionHook( 'fullurle',         array( 'CoreParserFunctions', 'fullurle'         ), SFH_NO_HASH );
+		$this->setFunctionHook( 'formatnum',        array( 'CoreParserFunctions', 'formatnum'        ), SFH_NO_HASH );
+		$this->setFunctionHook( 'grammar',          array( 'CoreParserFunctions', 'grammar'          ), SFH_NO_HASH );
+		$this->setFunctionHook( 'plural',           array( 'CoreParserFunctions', 'plural'           ), SFH_NO_HASH );
+		$this->setFunctionHook( 'numberofpages',    array( 'CoreParserFunctions', 'numberofpages'    ), SFH_NO_HASH );
+		$this->setFunctionHook( 'numberofusers',    array( 'CoreParserFunctions', 'numberofusers'    ), SFH_NO_HASH );
+		$this->setFunctionHook( 'numberofarticles', array( 'CoreParserFunctions', 'numberofarticles' ), SFH_NO_HASH );
+		$this->setFunctionHook( 'numberoffiles',    array( 'CoreParserFunctions', 'numberoffiles'    ), SFH_NO_HASH );
+		$this->setFunctionHook( 'numberofadmins',   array( 'CoreParserFunctions', 'numberofadmins'   ), SFH_NO_HASH );
+		$this->setFunctionHook( 'numberofedits',    array( 'CoreParserFunctions', 'numberofedits'    ), SFH_NO_HASH );
+		$this->setFunctionHook( 'language',         array( 'CoreParserFunctions', 'language'         ), SFH_NO_HASH );
+		$this->setFunctionHook( 'padleft',          array( 'CoreParserFunctions', 'padleft'          ), SFH_NO_HASH );
+		$this->setFunctionHook( 'padright',         array( 'CoreParserFunctions', 'padright'         ), SFH_NO_HASH );
+		$this->setFunctionHook( 'anchorencode',     array( 'CoreParserFunctions', 'anchorencode'     ), SFH_NO_HASH );
+		$this->setFunctionHook( 'special',          array( 'CoreParserFunctions', 'special'          ) );
+		$this->setFunctionHook( 'defaultsort',      array( 'CoreParserFunctions', 'defaultsort'      ), SFH_NO_HASH );
+		$this->setFunctionHook( 'filepath',         array( 'CoreParserFunctions', 'filepath'         ), SFH_NO_HASH );
+
+		if ( $wgAllowDisplayTitle ) {
+			$this->setFunctionHook( 'displaytitle', array( 'CoreParserFunctions', 'displaytitle' ), SFH_NO_HASH );
+		}
+		if ( $wgAllowSlowParserFunctions ) {
+			$this->setFunctionHook( 'pagesinnamespace', array( 'CoreParserFunctions', 'pagesinnamespace' ), SFH_NO_HASH );
+		}
+
+		$this->initialiseVariables();
+
+		wfRunHooks( 'ParserFirstCallInit', array( &$this ) );
+		wfProfileOut( __METHOD__ );
+	}
+
+	/**
+	 * Clear Parser state
+	 *
+	 * @private
+	 */
+	function clearState() {
+		wfProfileIn( __METHOD__ );
+		if ( $this->mFirstCall ) {
+			$this->firstCallInit();
+		}
+		$this->mOutput = new ParserOutput;
+		$this->mAutonumber = 0;
+		$this->mLastSection = '';
+		$this->mDTopen = false;
+		$this->mIncludeCount = array();
+		$this->mStripState = new StripState;
+		$this->mArgStack = array();
+		$this->mInPre = false;
+		$this->mInterwikiLinkHolders = array(
+			'texts' => array(),
+			'titles' => array()
+		);
+		$this->mLinkHolders = array(
+			'namespaces' => array(),
+			'dbkeys' => array(),
+			'queries' => array(),
+			'texts' => array(),
+			'titles' => array()
+		);
+		$this->mRevisionTimestamp = $this->mRevisionId = null;
+
+		/**
+		 * Prefix for temporary replacement strings for the multipass parser.
+		 * \x07 should never appear in input as it's disallowed in XML.
+		 * Using it at the front also gives us a little extra robustness
+		 * since it shouldn't match when butted up against identifier-like
+		 * string constructs.
+		 */
+		$this->mUniqPrefix = "\x07UNIQ" . self::getRandomString();
+
+		# Clear these on every parse, bug 4549
+ 		$this->mTemplates = array();
+ 		$this->mTemplatePath = array();
+
+		$this->mShowToc = true;
+		$this->mForceTocPosition = false;
+		$this->mIncludeSizes = array(
+			'pre-expand' => 0,
+			'post-expand' => 0,
+			'arg' => 0
+		);
+		$this->mDefaultSort = false;
+
+		wfRunHooks( 'ParserClearState', array( &$this ) );
+		wfProfileOut( __METHOD__ );
+	}
+
+	function setOutputType( $ot ) {
+		$this->mOutputType = $ot;
+		// Shortcut alias
+		$this->ot = array(
+			'html' => $ot == self::OT_HTML,
+			'wiki' => $ot == self::OT_WIKI,
+			'msg' => $ot == self::OT_MSG,
+			'pre' => $ot == self::OT_PREPROCESS,
+		);
+	}
+
+	/**
+	 * Accessor for mUniqPrefix.
+	 *
+	 * @public
+	 */
+	function uniqPrefix() {
+		return $this->mUniqPrefix;
+	}
+
+	/**
+	 * Convert wikitext to HTML
+	 * Do not call this function recursively.
+	 *
+	 * @param string $text Text we want to parse
+	 * @param Title &$title A title object
+	 * @param array $options
+	 * @param boolean $linestart
+	 * @param boolean $clearState
+	 * @param int $revid number to pass in {{REVISIONID}}
+	 * @return ParserOutput a ParserOutput
+	 */
+	public function parse( $text, &$title, $options, $linestart = true, $clearState = true, $revid = null ) {
+		/**
+		 * First pass--just handle <nowiki> sections, pass the rest off
+		 * to internalParse() which does all the real work.
+		 */
+
+		global $wgUseTidy, $wgAlwaysUseTidy, $wgContLang;
+		$fname = 'Parser::parse-' . wfGetCaller();
+		wfProfileIn( __METHOD__ );
+		wfProfileIn( $fname );
+
+		if ( $clearState ) {
+			$this->clearState();
+		}
+
+		$this->mOptions = $options;
+		$this->mTitle =& $title;
+		$oldRevisionId = $this->mRevisionId;
+		$oldRevisionTimestamp = $this->mRevisionTimestamp;
+		if( $revid !== null ) {
+			$this->mRevisionId = $revid;
+			$this->mRevisionTimestamp = null;
+		}
+		$this->setOutputType( self::OT_HTML );
+		wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$this->mStripState ) );
+		$text = $this->strip( $text, $this->mStripState );
+		wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$this->mStripState ) );
+		$text = $this->internalParse( $text );
+		$text = $this->mStripState->unstripGeneral( $text );
+
+		# Clean up special characters, only run once, next-to-last before doBlockLevels
+		$fixtags = array(
+			# french spaces, last one Guillemet-left
+			# only if there is something before the space
+			'/(.) (?=\\?|:|;|!|%|\\302\\273)/' => '\\1&nbsp;\\2',
+			# french spaces, Guillemet-right
+			'/(\\302\\253) /' => '\\1&nbsp;',
+		);
+		$text = preg_replace( array_keys($fixtags), array_values($fixtags), $text );
+
+		# only once and last
+		$text = $this->doBlockLevels( $text, $linestart );
+
+		$this->replaceLinkHolders( $text );
+
+		# the position of the parserConvert() call should not be changed. it
+		# assumes that the links are all replaced and the only thing left
+		# is the <nowiki> mark.
+		# Side-effects: this calls $this->mOutput->setTitleText()
+		$text = $wgContLang->parserConvert( $text, $this );
+
+		$text = $this->mStripState->unstripNoWiki( $text );
+
+		wfRunHooks( 'ParserBeforeTidy', array( &$this, &$text ) );
+
+//!JF Move to its own function
+
+		$uniq_prefix = $this->mUniqPrefix;
+                $matches = array();
+		$elements = array_keys( $this->mTransparentTagHooks );
+                $text = self::extractTagsAndParams( $elements, $text, $matches, $uniq_prefix );
+
+                foreach( $matches as $marker => $data ) {
+                        list( $element, $content, $params, $tag ) = $data;
+                        $tagName = strtolower( $element );
+                        if( isset( $this->mTransparentTagHooks[$tagName] ) ) {
+                                $output = call_user_func_array( $this->mTransparentTagHooks[$tagName],
+                                        array( $content, $params, $this ) );
+                        } else {
+				$output = $tag;
+			}
+			$this->mStripState->general->setPair( $marker, $output );
+		}
+		$text = $this->mStripState->unstripGeneral( $text );
+
+		$text = Sanitizer::normalizeCharReferences( $text );
+
+		if (($wgUseTidy and $this->mOptions->mTidy) or $wgAlwaysUseTidy) {
+			$text = self::tidy($text);
+		} else {
+			# attempt to sanitize at least some nesting problems
+			# (bug #2702 and quite a few others)
+			$tidyregs = array(
+				# ''Something [http://www.cool.com cool''] -->
+				# <i>Something</i><a href="http://www.cool.com"..><i>cool></i></a>
+				'/(<([bi])>)(<([bi])>)?([^<]*)(<\/?a[^<]*>)([^<]*)(<\/\\4>)?(<\/\\2>)/' =>
+				'\\1\\3\\5\\8\\9\\6\\1\\3\\7\\8\\9',
+				# fix up an anchor inside another anchor, only
+				# at least for a single single nested link (bug 3695)
+				'/(<a[^>]+>)([^<]*)(<a[^>]+>[^<]*)<\/a>(.*)<\/a>/' =>
+				'\\1\\2</a>\\3</a>\\1\\4</a>',
+				# fix div inside inline elements- doBlockLevels won't wrap a line which
+				# contains a div, so fix it up here; replace
+				# div with escaped text
+				'/(<([aib]) [^>]+>)([^<]*)(<div([^>]*)>)(.*)(<\/div>)([^<]*)(<\/\\2>)/' =>
+				'\\1\\3&lt;div\\5&gt;\\6&lt;/div&gt;\\8\\9',
+				# remove empty italic or bold tag pairs, some
+				# introduced by rules above
+				'/<([bi])><\/\\1>/' => '',
+			);
+
+			$text = preg_replace(
+				array_keys( $tidyregs ),
+				array_values( $tidyregs ),
+				$text );
+		}
+
+		wfRunHooks( 'ParserAfterTidy', array( &$this, &$text ) );
+
+		# Information on include size limits, for the benefit of users who try to skirt them
+		if ( $this->mOptions->getEnableLimitReport() ) {
+			$max = $this->mOptions->getMaxIncludeSize();
+			$limitReport = 
+				"Pre-expand include size: {$this->mIncludeSizes['pre-expand']}/$max bytes\n" .
+				"Post-expand include size: {$this->mIncludeSizes['post-expand']}/$max bytes\n" .
+				"Template argument size: {$this->mIncludeSizes['arg']}/$max bytes\n";
+			wfRunHooks( 'ParserLimitReport', array( $this, &$limitReport ) );
+			$text .= "<!-- \n$limitReport-->\n";
+		}
+		$this->mOutput->setText( $text );
+		$this->mRevisionId = $oldRevisionId;
+		$this->mRevisionTimestamp = $oldRevisionTimestamp;
+		wfProfileOut( $fname );
+		wfProfileOut( __METHOD__ );
+
+		return $this->mOutput;
+	}
+
+	/**
+	 * Recursive parser entry point that can be called from an extension tag
+	 * hook.
+	 */
+	function recursiveTagParse( $text ) {
+		wfProfileIn( __METHOD__ );
+		wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$this->mStripState ) );
+		$text = $this->strip( $text, $this->mStripState );
+		wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$this->mStripState ) );
+		$text = $this->internalParse( $text );
+		wfProfileOut( __METHOD__ );
+		return $text;
+	}
+
+	/**
+	 * Expand templates and variables in the text, producing valid, static wikitext.
+	 * Also removes comments.
+	 */
+	function preprocess( $text, $title, $options, $revid = null ) {
+		wfProfileIn( __METHOD__ );
+		$this->clearState();
+		$this->setOutputType( self::OT_PREPROCESS );
+		$this->mOptions = $options;
+		$this->mTitle = $title;
+		if( $revid !== null ) {
+			$this->mRevisionId = $revid;
+		}
+		wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$this->mStripState ) );
+		$text = $this->strip( $text, $this->mStripState );
+		wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$this->mStripState ) );
+		if ( $this->mOptions->getRemoveComments() ) {
+			$text = Sanitizer::removeHTMLcomments( $text );
+		}
+		$text = $this->replaceVariables( $text );
+		$text = $this->mStripState->unstripBoth( $text );
+		wfProfileOut( __METHOD__ );
+		return $text;
+	}
+
+	/**
+	 * Get a random string
+	 *
+	 * @private
+	 * @static
+	 */
+	function getRandomString() {
+		return dechex(mt_rand(0, 0x7fffffff)) . dechex(mt_rand(0, 0x7fffffff));
+	}
+
+	function &getTitle() { return $this->mTitle; }
+	function getOptions() { return $this->mOptions; }
+
+	function getFunctionLang() {
+		global $wgLang, $wgContLang;
+		return $this->mOptions->getInterfaceMessage() ? $wgLang : $wgContLang;
+	}
+
+	/**
+	 * Replaces all occurrences of HTML-style comments and the given tags
+	 * in the text with a random marker and returns teh next text. The output
+	 * parameter $matches will be an associative array filled with data in
+	 * the form:
+	 *   'UNIQ-xxxxx' => array(
+	 *     'element',
+	 *     'tag content',
+	 *     array( 'param' => 'x' ),
+	 *     '<element param="x">tag content</element>' ) )
+	 *
+	 * @param $elements list of element names. Comments are always extracted.
+	 * @param $text Source text string.
+	 * @param $uniq_prefix
+	 *
+	 * @public
+	 * @static
+	 */
+	function extractTagsAndParams($elements, $text, &$matches, $uniq_prefix = ''){
+		static $n = 1;
+		$stripped = '';
+		$matches = array();
+
+		$taglist = implode( '|', $elements );
+		$start = "/<($taglist)(\\s+[^>]*?|\\s*?)(\/?>)|<(!--)/i";
+
+		while ( '' != $text ) {
+			$p = preg_split( $start, $text, 2, PREG_SPLIT_DELIM_CAPTURE );
+			$stripped .= $p[0];
+			if( count( $p ) < 5 ) {
+				break;
+			}
+			if( count( $p ) > 5 ) {
+				// comment
+				$element    = $p[4];
+				$attributes = '';
+				$close      = '';
+				$inside     = $p[5];
+			} else {
+				// tag
+				$element    = $p[1];
+				$attributes = $p[2];
+				$close      = $p[3];
+				$inside     = $p[4];
+			}
+
+			$marker = "$uniq_prefix-$element-" . sprintf('%08X', $n++) . "-QINU\x07";
+			$stripped .= $marker;
+
+			if ( $close === '/>' ) {
+				// Empty element tag, <tag />
+				$content = null;
+				$text = $inside;
+				$tail = null;
+			} else {
+				if( $element == '!--' ) {
+					$end = '/(-->)/';
+				} else {
+					$end = "/(<\\/$element\\s*>)/i";
+				}
+				$q = preg_split( $end, $inside, 2, PREG_SPLIT_DELIM_CAPTURE );
+				$content = $q[0];
+				if( count( $q ) < 3 ) {
+					# No end tag -- let it run out to the end of the text.
+					$tail = '';
+					$text = '';
+				} else {
+					$tail = $q[1];
+					$text = $q[2];
+				}
+			}
+
+			$matches[$marker] = array( $element,
+				$content,
+				Sanitizer::decodeTagAttributes( $attributes ),
+				"<$element$attributes$close$content$tail" );
+		}
+		return $stripped;
+	}
+
+	/**
+	 * Strips and renders nowiki, pre, math, hiero
+	 * If $render is set, performs necessary rendering operations on plugins
+	 * Returns the text, and fills an array with data needed in unstrip()
+	 *
+	 * @param StripState $state
+	 *
+	 * @param bool $stripcomments when set, HTML comments <!-- like this -->
+	 *  will be stripped in addition to other tags. This is important
+	 *  for section editing, where these comments cause confusion when
+	 *  counting the sections in the wikisource
+	 *
+	 * @param array dontstrip contains tags which should not be stripped;
+	 *  used to prevent stipping of <gallery> when saving (fixes bug 2700)
+	 *
+	 * @private
+	 */
+	function strip( $text, $state, $stripcomments = false , $dontstrip = array () ) {
+		global $wgContLang;
+		wfProfileIn( __METHOD__ );
+		$render = ($this->mOutputType == self::OT_HTML);
+
+		$uniq_prefix = $this->mUniqPrefix;
+		$commentState = new ReplacementArray;
+		$nowikiItems = array();
+		$generalItems = array();
+
+		$elements = array_merge(
+			array( 'nowiki', 'gallery' ),
+			array_keys( $this->mTagHooks ) );
+		global $wgRawHtml;
+		if( $wgRawHtml ) {
+			$elements[] = 'html';
+		}
+		if( $this->mOptions->getUseTeX() ) {
+			$elements[] = 'math';
+		}
+
+		# Removing $dontstrip tags from $elements list (currently only 'gallery', fixing bug 2700)
+		foreach ( $elements AS $k => $v ) {
+			if ( !in_array ( $v , $dontstrip ) ) continue;
+			unset ( $elements[$k] );
+		}
+
+		$matches = array();
+		$text = self::extractTagsAndParams( $elements, $text, $matches, $uniq_prefix );
+
+		foreach( $matches as $marker => $data ) {
+			list( $element, $content, $params, $tag ) = $data;
+			if( $render ) {
+				$tagName = strtolower( $element );
+				wfProfileIn( __METHOD__."-render-$tagName" );
+				switch( $tagName ) {
+				case '!--':
+					// Comment
+					if( substr( $tag, -3 ) == '-->' ) {
+						$output = $tag;
+					} else {
+						// Unclosed comment in input.
+						// Close it so later stripping can remove it
+						$output = "$tag-->";
+					}
+					break;
+				case 'html':
+					if( $wgRawHtml ) {
+						$output = $content;
+						break;
+					}
+					// Shouldn't happen otherwise. :)
+				case 'nowiki':
+					$output = Xml::escapeTagsOnly( $content );
+					break;
+				case 'math':
+					$output = $wgContLang->armourMath(
+						MathRenderer::renderMath( $content, $params ) );
+					break;
+				case 'gallery':
+					$output = $this->renderImageGallery( $content, $params );
+					break;
+				default:
+					if( isset( $this->mTagHooks[$tagName] ) ) {
+						$output = call_user_func_array( $this->mTagHooks[$tagName],
+							array( $content, $params, $this ) );
+					} else {
+						throw new MWException( "Invalid call hook $element" );
+					}
+				}
+				wfProfileOut( __METHOD__."-render-$tagName" );
+			} else {
+				// Just stripping tags; keep the source
+				$output = $tag;
+			}
+
+			// Unstrip the output, to support recursive strip() calls
+			$output = $state->unstripBoth( $output );
+
+			if( !$stripcomments && $element == '!--' ) {
+				$commentState->setPair( $marker, $output );
+			} elseif ( $element == 'html' || $element == 'nowiki' ) {
+				$nowikiItems[$marker] = $output;
+			} else {
+				$generalItems[$marker] = $output;
+			}
+		}
+		# Add the new items to the state
+		# We do this after the loop instead of during it to avoid slowing 
+		# down the recursive unstrip
+		$state->nowiki->mergeArray( $nowikiItems );
+		$state->general->mergeArray( $generalItems );
+
+		# Unstrip comments unless explicitly told otherwise.
+		# (The comments are always stripped prior to this point, so as to
+		# not invoke any extension tags / parser hooks contained within
+		# a comment.)
+		if ( !$stripcomments ) {
+			// Put them all back and forget them
+			$text = $commentState->replace( $text );
+		}
+
+		wfProfileOut( __METHOD__ );
+		return $text;
+	}
+
+	/**
+	 * Restores pre, math, and other extensions removed by strip()
+	 *
+	 * always call unstripNoWiki() after this one
+	 * @private
+	 * @deprecated use $this->mStripState->unstrip()
+	 */
+	function unstrip( $text, $state ) {
+		return $state->unstripGeneral( $text );
+	}
+
+	/**
+	 * Always call this after unstrip() to preserve the order
+	 *
+	 * @private
+	 * @deprecated use $this->mStripState->unstrip()
+	 */
+	function unstripNoWiki( $text, $state ) {
+		return $state->unstripNoWiki( $text );
+	}
+
+	/**
+	 * @deprecated use $this->mStripState->unstripBoth()
+	 */
+	function unstripForHTML( $text ) {
+		return $this->mStripState->unstripBoth( $text );
+	}
+
+	/**
+	 * Add an item to the strip state
+	 * Returns the unique tag which must be inserted into the stripped text
+	 * The tag will be replaced with the original text in unstrip()
+	 *
+	 * @private
+	 */
+	function insertStripItem( $text, &$state ) {
+		$rnd = $this->mUniqPrefix . '-item' . self::getRandomString();
+		$state->general->setPair( $rnd, $text );
+		return $rnd;
+	}
+
+	/**
+	 * Interface with html tidy, used if $wgUseTidy = true.
+	 * If tidy isn't able to correct the markup, the original will be
+	 * returned in all its glory with a warning comment appended.
+	 *
+	 * Either the external tidy program or the in-process tidy extension
+	 * will be used depending on availability. Override the default
+	 * $wgTidyInternal setting to disable the internal if it's not working.
+	 *
+	 * @param string $text Hideous HTML input
+	 * @return string Corrected HTML output
+	 * @public
+	 * @static
+	 */
+	function tidy( $text ) {
+		global $wgTidyInternal;
+		$wrappedtext = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"'.
+' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>'.
+'<head><title>test</title></head><body>'.$text.'</body></html>';
+		if( $wgTidyInternal ) {
+			$correctedtext = self::internalTidy( $wrappedtext );
+		} else {
+			$correctedtext = self::externalTidy( $wrappedtext );
+		}
+		if( is_null( $correctedtext ) ) {
+			wfDebug( "Tidy error detected!\n" );
+			return $text . "\n<!-- Tidy found serious XHTML errors -->\n";
+		}
+		return $correctedtext;
+	}
+
+	/**
+	 * Spawn an external HTML tidy process and get corrected markup back from it.
+	 *
+	 * @private
+	 * @static
+	 */
+	function externalTidy( $text ) {
+		global $wgTidyConf, $wgTidyBin, $wgTidyOpts;
+		$fname = 'Parser::externalTidy';
+		wfProfileIn( $fname );
+
+		$cleansource = '';
+		$opts = ' -utf8';
+
+		$descriptorspec = array(
+			0 => array('pipe', 'r'),
+			1 => array('pipe', 'w'),
+			2 => array('file', wfGetNull(), 'a')
+		);
+		$pipes = array();
+		$process = proc_open("$wgTidyBin -config $wgTidyConf $wgTidyOpts$opts", $descriptorspec, $pipes);
+		if (is_resource($process)) {
+			// Theoretically, this style of communication could cause a deadlock
+			// here. If the stdout buffer fills up, then writes to stdin could
+			// block. This doesn't appear to happen with tidy, because tidy only
+			// writes to stdout after it's finished reading from stdin. Search
+			// for tidyParseStdin and tidySaveStdout in console/tidy.c
+			fwrite($pipes[0], $text);
+			fclose($pipes[0]);
+			while (!feof($pipes[1])) {
+				$cleansource .= fgets($pipes[1], 1024);
+			}
+			fclose($pipes[1]);
+			proc_close($process);
+		}
+
+		wfProfileOut( $fname );
+
+		if( $cleansource == '' && $text != '') {
+			// Some kind of error happened, so we couldn't get the corrected text.
+			// Just give up; we'll use the source text and append a warning.
+			return null;
+		} else {
+			return $cleansource;
+		}
+	}
+
+	/**
+	 * Use the HTML tidy PECL extension to use the tidy library in-process,
+	 * saving the overhead of spawning a new process. 
+	 *
+	 * 'pear install tidy' should be able to compile the extension module.
+	 *
+	 * @private
+	 * @static
+	 */
+	function internalTidy( $text ) {
+		global $wgTidyConf, $IP;
+		$fname = 'Parser::internalTidy';
+		wfProfileIn( $fname );
+
+		$tidy = new tidy;
+		$tidy->parseString( $text, $wgTidyConf, 'utf8' );
+		$tidy->cleanRepair();
+		if( $tidy->getStatus() == 2 ) {
+			// 2 is magic number for fatal error
+			// http://www.php.net/manual/en/function.tidy-get-status.php
+			$cleansource = null;
+		} else {
+			$cleansource = tidy_get_output( $tidy );
+		}
+		wfProfileOut( $fname );
+		return $cleansource;
+	}
+
+	/**
+	 * parse the wiki syntax used to render tables
+	 *
+	 * @private
+	 */
+	function doTableStuff ( $text ) {
+		$fname = 'Parser::doTableStuff';
+		wfProfileIn( $fname );
+
+		$lines = explode ( "\n" , $text );
+		$td_history = array (); // Is currently a td tag open?
+		$last_tag_history = array (); // Save history of last lag activated (td, th or caption)
+		$tr_history = array (); // Is currently a tr tag open?
+		$tr_attributes = array (); // history of tr attributes
+		$has_opened_tr = array(); // Did this table open a <tr> element?
+		$indent_level = 0; // indent level of the table
+		foreach ( $lines as $key => $line )
+		{
+			$line = trim ( $line );
+
+			if( $line == '' ) { // empty line, go to next line
+				continue;
+			}
+			$first_character = $line{0};
+			$matches = array();
+
+			if ( preg_match( '/^(:*)\{\|(.*)$/' , $line , $matches ) ) {
+				// First check if we are starting a new table
+				$indent_level = strlen( $matches[1] );
+
+				$attributes = $this->mStripState->unstripBoth( $matches[2] );
+				$attributes = Sanitizer::fixTagAttributes ( $attributes , 'table' );
+
+				$lines[$key] = str_repeat( '<dl><dd>' , $indent_level ) . "<table{$attributes}>";
+				array_push ( $td_history , false );
+				array_push ( $last_tag_history , '' );
+				array_push ( $tr_history , false );
+				array_push ( $tr_attributes , '' );
+				array_push ( $has_opened_tr , false );
+			} else if ( count ( $td_history ) == 0 ) {
+				// Don't do any of the following
+				continue;
+			} else if ( substr ( $line , 0 , 2 ) == '|}' ) { 
+				// We are ending a table
+				$line = '</table>' . substr ( $line , 2 );
+				$last_tag = array_pop ( $last_tag_history );
+
+				if ( !array_pop ( $has_opened_tr ) ) {
+					$line = "<tr><td></td></tr>{$line}";
+				}
+
+				if ( array_pop ( $tr_history ) ) {
+					$line = "</tr>{$line}";
+				}
+
+				if ( array_pop ( $td_history ) ) {
+					$line = "</{$last_tag}>{$line}";
+				}
+				array_pop ( $tr_attributes );
+				$lines[$key] = $line . str_repeat( '</dd></dl>' , $indent_level );
+			} else if ( substr ( $line , 0 , 2 ) == '|-' ) {
+				// Now we have a table row
+				$line = preg_replace( '#^\|-+#', '', $line );
+
+				// Whats after the tag is now only attributes
+				$attributes = $this->mStripState->unstripBoth( $line );
+				$attributes = Sanitizer::fixTagAttributes ( $attributes , 'tr' );
+				array_pop ( $tr_attributes );
+				array_push ( $tr_attributes , $attributes );
+
+				$line = '';
+				$last_tag = array_pop ( $last_tag_history );
+				array_pop ( $has_opened_tr );
+				array_push ( $has_opened_tr , true );
+
+				if ( array_pop ( $tr_history ) ) {
+					$line = '</tr>';
+				}
+
+				if ( array_pop ( $td_history ) ) {
+					$line = "</{$last_tag}>{$line}";
+				}
+
+				$lines[$key] = $line;
+				array_push ( $tr_history , false );
+				array_push ( $td_history , false );
+				array_push ( $last_tag_history , '' );
+			}
+			else if ( $first_character == '|' || $first_character == '!' || substr ( $line , 0 , 2 )  == '|+' ) {
+				// This might be cell elements, td, th or captions
+				if ( substr ( $line , 0 , 2 ) == '|+' ) {
+					$first_character = '+';
+					$line = substr ( $line , 1 );
+				}
+
+				$line = substr ( $line , 1 );
+
+				if ( $first_character == '!' ) {
+					$line = str_replace ( '!!' , '||' , $line );
+				}
+
+				// Split up multiple cells on the same line.
+				// FIXME : This can result in improper nesting of tags processed
+				// by earlier parser steps, but should avoid splitting up eg
+				// attribute values containing literal "||".
+				$cells = StringUtils::explodeMarkup( '||' , $line );
+
+				$lines[$key] = '';
+
+				// Loop through each table cell
+				foreach ( $cells as $cell )
+				{
+					$previous = '';
+					if ( $first_character != '+' )
+					{
+						$tr_after = array_pop ( $tr_attributes );
+						if ( !array_pop ( $tr_history ) ) {
+							$previous = "<tr{$tr_after}>\n";
+						}
+						array_push ( $tr_history , true );
+						array_push ( $tr_attributes , '' );
+						array_pop ( $has_opened_tr );
+						array_push ( $has_opened_tr , true );
+					}
+
+					$last_tag = array_pop ( $last_tag_history );
+
+					if ( array_pop ( $td_history ) ) {
+						$previous = "</{$last_tag}>{$previous}";
+					}
+
+					if ( $first_character == '|' ) {
+						$last_tag = 'td';
+					} else if ( $first_character == '!' ) {
+						$last_tag = 'th';
+					} else if ( $first_character == '+' ) {
+						$last_tag = 'caption';
+					} else {
+						$last_tag = '';
+					}
+
+					array_push ( $last_tag_history , $last_tag );
+
+					// A cell could contain both parameters and data
+					$cell_data = explode ( '|' , $cell , 2 );
+
+					// Bug 553: Note that a '|' inside an invalid link should not
+					// be mistaken as delimiting cell parameters
+					if ( strpos( $cell_data[0], '[[' ) !== false ) {
+						$cell = "{$previous}<{$last_tag}>{$cell}";
+					} else if ( count ( $cell_data ) == 1 )
+						$cell = "{$previous}<{$last_tag}>{$cell_data[0]}";
+					else {
+						$attributes = $this->mStripState->unstripBoth( $cell_data[0] );
+						$attributes = Sanitizer::fixTagAttributes( $attributes , $last_tag );
+						$cell = "{$previous}<{$last_tag}{$attributes}>{$cell_data[1]}";
+					}
+
+					$lines[$key] .= $cell;
+					array_push ( $td_history , true );
+				}
+			}
+		}
+
+		// Closing open td, tr && table
+		while ( count ( $td_history ) > 0 )
+		{
+			if ( array_pop ( $td_history ) ) {
+				$lines[] = '</td>' ;
+			}
+			if ( array_pop ( $tr_history ) ) {
+				$lines[] = '</tr>' ;
+			}
+			if ( !array_pop ( $has_opened_tr ) ) {
+				$lines[] = "<tr><td></td></tr>" ;
+			}
+
+			$lines[] = '</table>' ;
+		}
+
+		$output = implode ( "\n" , $lines ) ;
+
+		// special case: don't return empty table
+		if( $output == "<table>\n<tr><td></td></tr>\n</table>" ) {
+			$output = '';
+		}
+
+		wfProfileOut( $fname );
+
+		return $output;
+	}
+
+	/**
+	 * Helper function for parse() that transforms wiki markup into
+	 * HTML. Only called for $mOutputType == OT_HTML.
+	 *
+	 * @private
+	 */
+	function internalParse( $text ) {
+		$args = array();
+		$isMain = true;
+		$fname = 'Parser::internalParse';
+		wfProfileIn( $fname );
+
+		# Hook to suspend the parser in this state
+		if ( !wfRunHooks( 'ParserBeforeInternalParse', array( &$this, &$text, &$this->mStripState ) ) ) {
+			wfProfileOut( $fname );
+			return $text ;
+		}
+
+		# Remove <noinclude> tags and <includeonly> sections
+		$text = strtr( $text, array( '<onlyinclude>' => '' , '</onlyinclude>' => '' ) );
+		$text = strtr( $text, array( '<noinclude>' => '', '</noinclude>' => '') );
+		$text = StringUtils::delimiterReplace( '<includeonly>', '</includeonly>', '', $text );
+
+		$text = Sanitizer::removeHTMLtags( $text, array( &$this, 'attributeStripCallback' ), array(), array_keys( $this->mTransparentTagHooks ) );
+
+		$text = $this->replaceVariables( $text, $args );
+		wfRunHooks( 'InternalParseBeforeLinks', array( &$this, &$text, &$this->mStripState ) );
+
+		// Tables need to come after variable replacement for things to work
+		// properly; putting them before other transformations should keep
+		// exciting things like link expansions from showing up in surprising
+		// places.
+		$text = $this->doTableStuff( $text );
+
+		$text = preg_replace( '/(^|\n)-----*/', '\\1<hr />', $text );
+
+		$text = $this->stripToc( $text );
+		$this->stripNoGallery( $text );
+		$text = $this->doHeadings( $text );
+		if($this->mOptions->getUseDynamicDates()) {
+			$df =& DateFormatter::getInstance();
+			$text = $df->reformat( $this->mOptions->getDateFormat(), $text );
+		}
+		$text = $this->doAllQuotes( $text );
+		$text = $this->replaceInternalLinks( $text );
+		$text = $this->replaceExternalLinks( $text );
+
+		# replaceInternalLinks may sometimes leave behind
+		# absolute URLs, which have to be masked to hide them from replaceExternalLinks
+		$text = str_replace($this->mUniqPrefix."NOPARSE", "", $text);
+
+		$text = $this->doMagicLinks( $text );
+		$text = $this->formatHeadings( $text, $isMain );
+
+		wfProfileOut( $fname );
+		return $text;
+	}
+
+	/**
+	 * Replace special strings like "ISBN xxx" and "RFC xxx" with
+	 * magic external links.
+	 *
+	 * @private
+	 */
+	function &doMagicLinks( &$text ) {
+		wfProfileIn( __METHOD__ );
+		$text = preg_replace_callback(
+			'!(?:                           # Start cases
+			    <a.*?</a> |                 # Skip link text
+			    <.*?> |                     # Skip stuff inside HTML elements
+			    (?:RFC|PMID)\s+([0-9]+) |   # RFC or PMID, capture number as m[1]
+			    ISBN\s+(\b                  # ISBN, capture number as m[2]
+                                     (?: 97[89] [\ \-]? )?   # optional 13-digit ISBN prefix
+                                     (?: [0-9]  [\ \-]? ){9} # 9 digits with opt. delimiters
+                                     [0-9Xx]                 # check digit
+                                   \b)
+			)!x', array( &$this, 'magicLinkCallback' ), $text );
+		wfProfileOut( __METHOD__ );
+		return $text;
+	}
+
+	function magicLinkCallback( $m ) {
+		if ( substr( $m[0], 0, 1 ) == '<' ) {
+			# Skip HTML element
+			return $m[0];
+		} elseif ( substr( $m[0], 0, 4 ) == 'ISBN' ) {
+			$isbn = $m[2];
+			$num = strtr( $isbn, array(
+				'-' => '',
+				' ' => '',
+				'x' => 'X',
+			));
+			$titleObj = SpecialPage::getTitleFor( 'Booksources' );
+			$text = '<a href="' .
+				$titleObj->escapeLocalUrl( "isbn=$num" ) .
+				"\" class=\"internal\">ISBN $isbn</a>";
+		} else {
+			if ( substr( $m[0], 0, 3 ) == 'RFC' ) {
+				$keyword = 'RFC';
+				$urlmsg = 'rfcurl';
+				$id = $m[1];
+			} elseif ( substr( $m[0], 0, 4 ) == 'PMID' ) {
+				$keyword = 'PMID';
+				$urlmsg = 'pubmedurl';
+				$id = $m[1];
+			} else {
+				throw new MWException( __METHOD__.': unrecognised match type "' .
+					substr($m[0], 0, 20 ) . '"' );
+			}
+
+			$url = wfMsg( $urlmsg, $id);
+			$sk = $this->mOptions->getSkin();
+			$la = $sk->getExternalLinkAttributes( $url, $keyword.$id );
+			$text = "<a href=\"{$url}\"{$la}>{$keyword} {$id}</a>";
+		}
+		return $text;
+	}
+
+	/**
+	 * Parse headers and return html
+	 *
+	 * @private
+	 */
+	function doHeadings( $text ) {
+		$fname = 'Parser::doHeadings';
+		wfProfileIn( $fname );
+		for ( $i = 6; $i >= 1; --$i ) {
+			$h = str_repeat( '=', $i );
+			$text = preg_replace( "/^{$h}(.+){$h}\\s*$/m",
+			  "<h{$i}>\\1</h{$i}>\\2", $text );
+		}
+		wfProfileOut( $fname );
+		return $text;
+	}
+
+	/**
+	 * Replace single quotes with HTML markup
+	 * @private
+	 * @return string the altered text
+	 */
+	function doAllQuotes( $text ) {
+		$fname = 'Parser::doAllQuotes';
+		wfProfileIn( $fname );
+		$outtext = '';
+		$lines = explode( "\n", $text );
+		foreach ( $lines as $line ) {
+			$outtext .= $this->doQuotes ( $line ) . "\n";
+		}
+		$outtext = substr($outtext, 0,-1);
+		wfProfileOut( $fname );
+		return $outtext;
+	}
+
+	/**
+	 * Helper function for doAllQuotes()
+	 */
+	public function doQuotes( $text ) {
+		$arr = preg_split( "/(''+)/", $text, -1, PREG_SPLIT_DELIM_CAPTURE );
+		if ( count( $arr ) == 1 )
+			return $text;
+		else
+		{
+			# First, do some preliminary work. This may shift some apostrophes from
+			# being mark-up to being text. It also counts the number of occurrences
+			# of bold and italics mark-ups.
+			$i = 0;
+			$numbold = 0;
+			$numitalics = 0;
+			foreach ( $arr as $r )
+			{
+				if ( ( $i % 2 ) == 1 )
+				{
+					# If there are ever four apostrophes, assume the first is supposed to
+					# be text, and the remaining three constitute mark-up for bold text.
+					if ( strlen( $arr[$i] ) == 4 )
+					{
+						$arr[$i-1] .= "'";
+						$arr[$i] = "'''";
+					}
+					# If there are more than 5 apostrophes in a row, assume they're all
+					# text except for the last 5.
+					else if ( strlen( $arr[$i] ) > 5 )
+					{
+						$arr[$i-1] .= str_repeat( "'", strlen( $arr[$i] ) - 5 );
+						$arr[$i] = "'''''";
+					}
+					# Count the number of occurrences of bold and italics mark-ups.
+					# We are not counting sequences of five apostrophes.
+					if ( strlen( $arr[$i] ) == 2 )      { $numitalics++;             }
+					else if ( strlen( $arr[$i] ) == 3 ) { $numbold++;                }
+					else if ( strlen( $arr[$i] ) == 5 ) { $numitalics++; $numbold++; }
+				}
+				$i++;
+			}
+
+			# If there is an odd number of both bold and italics, it is likely
+			# that one of the bold ones was meant to be an apostrophe followed
+			# by italics. Which one we cannot know for certain, but it is more
+			# likely to be one that has a single-letter word before it.
+			if ( ( $numbold % 2 == 1 ) && ( $numitalics % 2 == 1 ) )
+			{
+				$i = 0;
+				$firstsingleletterword = -1;
+				$firstmultiletterword = -1;
+				$firstspace = -1;
+				foreach ( $arr as $r )
+				{
+					if ( ( $i % 2 == 1 ) and ( strlen( $r ) == 3 ) )
+					{
+						$x1 = substr ($arr[$i-1], -1);
+						$x2 = substr ($arr[$i-1], -2, 1);
+						if ($x1 == ' ') {
+							if ($firstspace == -1) $firstspace = $i;
+						} else if ($x2 == ' ') {
+							if ($firstsingleletterword == -1) $firstsingleletterword = $i;
+						} else {
+							if ($firstmultiletterword == -1) $firstmultiletterword = $i;
+						}
+					}
+					$i++;
+				}
+
+				# If there is a single-letter word, use it!
+				if ($firstsingleletterword > -1)
+				{
+					$arr [ $firstsingleletterword ] = "''";
+					$arr [ $firstsingleletterword-1 ] .= "'";
+				}
+				# If not, but there's a multi-letter word, use that one.
+				else if ($firstmultiletterword > -1)
+				{
+					$arr [ $firstmultiletterword ] = "''";
+					$arr [ $firstmultiletterword-1 ] .= "'";
+				}
+				# ... otherwise use the first one that has neither.
+				# (notice that it is possible for all three to be -1 if, for example,
+				# there is only one pentuple-apostrophe in the line)
+				else if ($firstspace > -1)
+				{
+					$arr [ $firstspace ] = "''";
+					$arr [ $firstspace-1 ] .= "'";
+				}
+			}
+
+			# Now let's actually convert our apostrophic mush to HTML!
+			$output = '';
+			$buffer = '';
+			$state = '';
+			$i = 0;
+			foreach ($arr as $r)
+			{
+				if (($i % 2) == 0)
+				{
+					if ($state == 'both')
+						$buffer .= $r;
+					else
+						$output .= $r;
+				}
+				else
+				{
+					if (strlen ($r) == 2)
+					{
+						if ($state == 'i')
+						{ $output .= '</i>'; $state = ''; }
+						else if ($state == 'bi')
+						{ $output .= '</i>'; $state = 'b'; }
+						else if ($state == 'ib')
+						{ $output .= '</b></i><b>'; $state = 'b'; }
+						else if ($state == 'both')
+						{ $output .= '<b><i>'.$buffer.'</i>'; $state = 'b'; }
+						else # $state can be 'b' or ''
+						{ $output .= '<i>'; $state .= 'i'; }
+					}
+					else if (strlen ($r) == 3)
+					{
+						if ($state == 'b')
+						{ $output .= '</b>'; $state = ''; }
+						else if ($state == 'bi')
+						{ $output .= '</i></b><i>'; $state = 'i'; }
+						else if ($state == 'ib')
+						{ $output .= '</b>'; $state = 'i'; }
+						else if ($state == 'both')
+						{ $output .= '<i><b>'.$buffer.'</b>'; $state = 'i'; }
+						else # $state can be 'i' or ''
+						{ $output .= '<b>'; $state .= 'b'; }
+					}
+					else if (strlen ($r) == 5)
+					{
+						if ($state == 'b')
+						{ $output .= '</b><i>'; $state = 'i'; }
+						else if ($state == 'i')
+						{ $output .= '</i><b>'; $state = 'b'; }
+						else if ($state == 'bi')
+						{ $output .= '</i></b>'; $state = ''; }
+						else if ($state == 'ib')
+						{ $output .= '</b></i>'; $state = ''; }
+						else if ($state == 'both')
+						{ $output .= '<i><b>'.$buffer.'</b></i>'; $state = ''; }
+						else # ($state == '')
+						{ $buffer = ''; $state = 'both'; }
+					}
+				}
+				$i++;
+			}
+			# Now close all remaining tags.  Notice that the order is important.
+			if ($state == 'b' || $state == 'ib')
+				$output .= '</b>';
+			if ($state == 'i' || $state == 'bi' || $state == 'ib')
+				$output .= '</i>';
+			if ($state == 'bi')
+				$output .= '</b>';
+			# There might be lonely ''''', so make sure we have a buffer
+			if ($state == 'both' && $buffer)
+				$output .= '<b><i>'.$buffer.'</i></b>';
+			return $output;
+		}
+	}
+
+	/**
+	 * Replace external links
+	 *
+ 	 * Note: this is all very hackish and the order of execution matters a lot.
+	 * Make sure to run maintenance/parserTests.php if you change this code.
+	 *
+	 * @private
+	 */
+	function replaceExternalLinks( $text ) {
+		global $wgContLang;
+		$fname = 'Parser::replaceExternalLinks';
+		wfProfileIn( $fname );
+
+		$sk = $this->mOptions->getSkin();
+
+		$bits = preg_split( $this->mExtLinkBracketedRegex, $text, -1, PREG_SPLIT_DELIM_CAPTURE );
+
+		$s = $this->replaceFreeExternalLinks( array_shift( $bits ) );
+
+		$i = 0;
+		while ( $i<count( $bits ) ) {
+			$url = $bits[$i++];
+			$protocol = $bits[$i++];
+			$text = $bits[$i++];
+			$trail = $bits[$i++];
+
+			# The characters '<' and '>' (which were escaped by
+			# removeHTMLtags()) should not be included in
+			# URLs, per RFC 2396.
+			$m2 = array();
+			if (preg_match('/&(lt|gt);/', $url, $m2, PREG_OFFSET_CAPTURE)) {
+				$text = substr($url, $m2[0][1]) . ' ' . $text;
+				$url = substr($url, 0, $m2[0][1]);
+			}
+
+			# If the link text is an image URL, replace it with an <img> tag
+			# This happened by accident in the original parser, but some people used it extensively
+			$img = $this->maybeMakeExternalImage( $text );
+			if ( $img !== false ) {
+				$text = $img;
+			}
+
+			$dtrail = '';
+
+			# Set linktype for CSS - if URL==text, link is essentially free
+			$linktype = ($text == $url) ? 'free' : 'text';
+
+			# No link text, e.g. [http://domain.tld/some.link]
+			if ( $text == '' ) {
+				# Autonumber if allowed. See bug #5918
+				if ( strpos( wfUrlProtocols(), substr($protocol, 0, strpos($protocol, ':')) ) !== false ) {
+					$text = '[' . ++$this->mAutonumber . ']';
+					$linktype = 'autonumber';
+				} else {
+					# Otherwise just use the URL
+					$text = htmlspecialchars( $url );
+					$linktype = 'free';
+				}
+			} else {
+				# Have link text, e.g. [http://domain.tld/some.link text]s
+				# Check for trail
+				list( $dtrail, $trail ) = Linker::splitTrail( $trail );
+			}
+
+			$text = $wgContLang->markNoConversion($text);
+
+			$url = Sanitizer::cleanUrl( $url );
+
+			# Process the trail (i.e. everything after this link up until start of the next link),
+			# replacing any non-bracketed links
+			$trail = $this->replaceFreeExternalLinks( $trail );
+
+			# Use the encoded URL
+			# This means that users can paste URLs directly into the text
+			# Funny characters like &ouml; aren't valid in URLs anyway
+			# This was changed in August 2004
+			$s .= $sk->makeExternalLink( $url, $text, false, $linktype, $this->mTitle->getNamespace() ) . $dtrail . $trail;
+
+			# Register link in the output object.
+			# Replace unnecessary URL escape codes with the referenced character
+			# This prevents spammers from hiding links from the filters
+			$pasteurized = self::replaceUnusualEscapes( $url );
+			$this->mOutput->addExternalLink( $pasteurized );
+		}
+
+		wfProfileOut( $fname );
+		return $s;
+	}
+
+	/**
+	 * Replace anything that looks like a URL with a link
+	 * @private
+	 */
+	function replaceFreeExternalLinks( $text ) {
+		global $wgContLang;
+		$fname = 'Parser::replaceFreeExternalLinks';
+		wfProfileIn( $fname );
+
+		$bits = preg_split( '/(\b(?:' . wfUrlProtocols() . '))/S', $text, -1, PREG_SPLIT_DELIM_CAPTURE );
+		$s = array_shift( $bits );
+		$i = 0;
+
+		$sk = $this->mOptions->getSkin();
+
+		while ( $i < count( $bits ) ){
+			$protocol = $bits[$i++];
+			$remainder = $bits[$i++];
+
+			$m = array();
+			if ( preg_match( '/^('.self::EXT_LINK_URL_CLASS.'+)(.*)$/s', $remainder, $m ) ) {
+				# Found some characters after the protocol that look promising
+				$url = $protocol . $m[1];
+				$trail = $m[2];
+
+				# special case: handle urls as url args:
+				# http://www.example.com/foo?=http://www.example.com/bar
+				if(strlen($trail) == 0 &&
+					isset($bits[$i]) &&
+					preg_match('/^'. wfUrlProtocols() . '$/S', $bits[$i]) &&
+					preg_match( '/^('.self::EXT_LINK_URL_CLASS.'+)(.*)$/s', $bits[$i + 1], $m ))
+				{
+					# add protocol, arg
+					$url .= $bits[$i] . $m[1]; # protocol, url as arg to previous link
+					$i += 2;
+					$trail = $m[2];
+				}
+
+				# The characters '<' and '>' (which were escaped by
+				# removeHTMLtags()) should not be included in
+				# URLs, per RFC 2396.
+				$m2 = array();
+				if (preg_match('/&(lt|gt);/', $url, $m2, PREG_OFFSET_CAPTURE)) {
+					$trail = substr($url, $m2[0][1]) . $trail;
+					$url = substr($url, 0, $m2[0][1]);
+				}
+
+				# Move trailing punctuation to $trail
+				$sep = ',;\.:!?';
+				# If there is no left bracket, then consider right brackets fair game too
+				if ( strpos( $url, '(' ) === false ) {
+					$sep .= ')';
+				}
+
+				$numSepChars = strspn( strrev( $url ), $sep );
+				if ( $numSepChars ) {
+					$trail = substr( $url, -$numSepChars ) . $trail;
+					$url = substr( $url, 0, -$numSepChars );
+				}
+
+				$url = Sanitizer::cleanUrl( $url );
+
+				# Is this an external image?
+				$text = $this->maybeMakeExternalImage( $url );
+				if ( $text === false ) {
+					# Not an image, make a link
+					$text = $sk->makeExternalLink( $url, $wgContLang->markNoConversion($url), true, 'free', $this->mTitle->getNamespace() );
+					# Register it in the output object...
+					# Replace unnecessary URL escape codes with their equivalent characters
+					$pasteurized = self::replaceUnusualEscapes( $url );
+					$this->mOutput->addExternalLink( $pasteurized );
+				}
+				$s .= $text . $trail;
+			} else {
+				$s .= $protocol . $remainder;
+			}
+		}
+		wfProfileOut( $fname );
+		return $s;
+	}
+
+	/**
+	 * Replace unusual URL escape codes with their equivalent characters
+	 * @param string
+	 * @return string
+	 * @static
+	 * @todo  This can merge genuinely required bits in the path or query string,
+	 *        breaking legit URLs. A proper fix would treat the various parts of
+	 *        the URL differently; as a workaround, just use the output for
+	 *        statistical records, not for actual linking/output.
+	 */
+	static function replaceUnusualEscapes( $url ) {
+		return preg_replace_callback( '/%[0-9A-Fa-f]{2}/',
+			array( __CLASS__, 'replaceUnusualEscapesCallback' ), $url );
+	}
+
+	/**
+	 * Callback function used in replaceUnusualEscapes().
+	 * Replaces unusual URL escape codes with their equivalent character
+	 * @static
+	 * @private
+	 */
+	private static function replaceUnusualEscapesCallback( $matches ) {
+		$char = urldecode( $matches[0] );
+		$ord = ord( $char );
+		// Is it an unsafe or HTTP reserved character according to RFC 1738?
+		if ( $ord > 32 && $ord < 127 && strpos( '<>"#{}|\^~[]`;/?', $char ) === false ) {
+			// No, shouldn't be escaped
+			return $char;
+		} else {
+			// Yes, leave it escaped
+			return $matches[0];
+		}
+	}
+
+	/**
+	 * make an image if it's allowed, either through the global
+	 * option or through the exception
+	 * @private
+	 */
+	function maybeMakeExternalImage( $url ) {
+		$sk = $this->mOptions->getSkin();
+		$imagesfrom = $this->mOptions->getAllowExternalImagesFrom();
+		$imagesexception = !empty($imagesfrom);
+		$text = false;
+		if ( $this->mOptions->getAllowExternalImages()
+		     || ( $imagesexception && strpos( $url, $imagesfrom ) === 0 ) ) {
+			if ( preg_match( self::EXT_IMAGE_REGEX, $url ) ) {
+				# Image found
+				$text = $sk->makeExternalImage( htmlspecialchars( $url ) );
+			}
+		}
+		return $text;
+	}
+
+	/**
+	 * Process [[ ]] wikilinks
+	 *
+	 * @private
+	 */
+	function replaceInternalLinks( $s ) {
+		global $wgContLang;
+		static $fname = 'Parser::replaceInternalLinks' ;
+
+		wfProfileIn( $fname );
+
+		wfProfileIn( $fname.'-setup' );
+		static $tc = FALSE;
+		# the % is needed to support urlencoded titles as well
+		if ( !$tc ) { $tc = Title::legalChars() . '#%'; }
+
+		$sk = $this->mOptions->getSkin();
+
+		#split the entire text string on occurences of [[
+		$a = explode( '[[', ' ' . $s );
+		#get the first element (all text up to first [[), and remove the space we added
+		$s = array_shift( $a );
+		$s = substr( $s, 1 );
+
+		# Match a link having the form [[namespace:link|alternate]]trail
+		static $e1 = FALSE;
+		if ( !$e1 ) { $e1 = "/^([{$tc}]+)(?:\\|(.+?))?]](.*)\$/sD"; }
+		# Match cases where there is no "]]", which might still be images
+		static $e1_img = FALSE;
+		if ( !$e1_img ) { $e1_img = "/^([{$tc}]+)\\|(.*)\$/sD"; }
+		# Match the end of a line for a word that's not followed by whitespace,
+		# e.g. in the case of 'The Arab al[[Razi]]', 'al' will be matched
+		$e2 = wfMsgForContent( 'linkprefix' );
+
+		$useLinkPrefixExtension = $wgContLang->linkPrefixExtension();
+		if( is_null( $this->mTitle ) ) {
+			throw new MWException( __METHOD__.": \$this->mTitle is null\n" );
+		}
+		$nottalk = !$this->mTitle->isTalkPage();
+
+		if ( $useLinkPrefixExtension ) {
+			$m = array();
+			if ( preg_match( $e2, $s, $m ) ) {
+				$first_prefix = $m[2];
+			} else {
+				$first_prefix = false;
+			}
+		} else {
+			$prefix = '';
+		}
+
+		if($wgContLang->hasVariants()) {
+			$selflink = $wgContLang->convertLinkToAllVariants($this->mTitle->getPrefixedText());
+		} else {
+			$selflink = array($this->mTitle->getPrefixedText());
+		}
+		$useSubpages = $this->areSubpagesAllowed();
+		wfProfileOut( $fname.'-setup' );
+
+		# Loop for each link
+		for ($k = 0; isset( $a[$k] ); $k++) {
+			$line = $a[$k];
+			if ( $useLinkPrefixExtension ) {
+				wfProfileIn( $fname.'-prefixhandling' );
+				if ( preg_match( $e2, $s, $m ) ) {
+					$prefix = $m[2];
+					$s = $m[1];
+				} else {
+					$prefix='';
+				}
+				# first link
+				if($first_prefix) {
+					$prefix = $first_prefix;
+					$first_prefix = false;
+				}
+				wfProfileOut( $fname.'-prefixhandling' );
+			}
+
+			$might_be_img = false;
+
+			wfProfileIn( "$fname-e1" );
+			if ( preg_match( $e1, $line, $m ) ) { # page with normal text or alt
+				$text = $m[2];
+				# If we get a ] at the beginning of $m[3] that means we have a link that's something like:
+				# [[Image:Foo.jpg|[http://example.com desc]]] <- having three ] in a row fucks up,
+				# the real problem is with the $e1 regex
+				# See bug 1300.
+				#
+				# Still some problems for cases where the ] is meant to be outside punctuation,
+				# and no image is in sight. See bug 2095.
+				#
+				if( $text !== '' &&
+					substr( $m[3], 0, 1 ) === ']' &&
+					strpos($text, '[') !== false
+				)
+				{
+					$text .= ']'; # so that replaceExternalLinks($text) works later
+					$m[3] = substr( $m[3], 1 );
+				}
+				# fix up urlencoded title texts
+				if( strpos( $m[1], '%' ) !== false ) {
+					# Should anchors '#' also be rejected?
+					$m[1] = str_replace( array('<', '>'), array('&lt;', '&gt;'), urldecode($m[1]) );
+				}
+				$trail = $m[3];
+			} elseif( preg_match($e1_img, $line, $m) ) { # Invalid, but might be an image with a link in its caption
+				$might_be_img = true;
+				$text = $m[2];
+				if ( strpos( $m[1], '%' ) !== false ) {
+					$m[1] = urldecode($m[1]);
+				}
+				$trail = "";
+			} else { # Invalid form; output directly
+				$s .= $prefix . '[[' . $line ;
+				wfProfileOut( "$fname-e1" );
+				continue;
+			}
+			wfProfileOut( "$fname-e1" );
+			wfProfileIn( "$fname-misc" );
+
+			# Don't allow internal links to pages containing
+			# PROTO: where PROTO is a valid URL protocol; these
+			# should be external links.
+			if (preg_match('/^\b(?:' . wfUrlProtocols() . ')/', $m[1])) {
+				$s .= $prefix . '[[' . $line ;
+				continue;
+			}
+
+			# Make subpage if necessary
+			if( $useSubpages ) {
+				$link = $this->maybeDoSubpageLink( $m[1], $text );
+			} else {
+				$link = $m[1];
+			}
+
+			$noforce = (substr($m[1], 0, 1) != ':');
+			if (!$noforce) {
+				# Strip off leading ':'
+				$link = substr($link, 1);
+			}
+
+			wfProfileOut( "$fname-misc" );
+			wfProfileIn( "$fname-title" );
+			$nt = Title::newFromText( $this->mStripState->unstripNoWiki($link) );
+			if( !$nt ) {
+				$s .= $prefix . '[[' . $line;
+				wfProfileOut( "$fname-title" );
+				continue;
+			}
+
+			$ns = $nt->getNamespace();
+			$iw = $nt->getInterWiki();
+			wfProfileOut( "$fname-title" );
+
+			if ($might_be_img) { # if this is actually an invalid link
+				wfProfileIn( "$fname-might_be_img" );
+				if ($ns == NS_IMAGE && $noforce) { #but might be an image
+					$found = false;
+					while (isset ($a[$k+1]) ) {
+						#look at the next 'line' to see if we can close it there
+						$spliced = array_splice( $a, $k + 1, 1 );
+						$next_line = array_shift( $spliced );
+						$m = explode( ']]', $next_line, 3 );
+						if ( count( $m ) == 3 ) {
+							# the first ]] closes the inner link, the second the image
+							$found = true;
+							$text .= "[[{$m[0]}]]{$m[1]}";
+							$trail = $m[2];
+							break;
+						} elseif ( count( $m ) == 2 ) {
+							#if there's exactly one ]] that's fine, we'll keep looking
+							$text .= "[[{$m[0]}]]{$m[1]}";
+						} else {
+							#if $next_line is invalid too, we need look no further
+							$text .= '[[' . $next_line;
+							break;
+						}
+					}
+					if ( !$found ) {
+						# we couldn't find the end of this imageLink, so output it raw
+						#but don't ignore what might be perfectly normal links in the text we've examined
+						$text = $this->replaceInternalLinks($text);
+						$s .= "{$prefix}[[$link|$text";
+						# note: no $trail, because without an end, there *is* no trail
+						wfProfileOut( "$fname-might_be_img" );
+						continue;
+					}
+				} else { #it's not an image, so output it raw
+					$s .= "{$prefix}[[$link|$text";
+					# note: no $trail, because without an end, there *is* no trail
+					wfProfileOut( "$fname-might_be_img" );
+					continue;
+				}
+				wfProfileOut( "$fname-might_be_img" );
+			}
+
+			$wasblank = ( '' == $text );
+			if( $wasblank ) $text = $link;
+
+			# Link not escaped by : , create the various objects
+			if( $noforce ) {
+
+				# Interwikis
+				wfProfileIn( "$fname-interwiki" );
+				if( $iw && $this->mOptions->getInterwikiMagic() && $nottalk && $wgContLang->getLanguageName( $iw ) ) {
+					$this->mOutput->addLanguageLink( $nt->getFullText() );
+					$s = rtrim($s . $prefix);
+					$s .= trim($trail, "\n") == '' ? '': $prefix . $trail;
+					wfProfileOut( "$fname-interwiki" );
+					continue;
+				}
+				wfProfileOut( "$fname-interwiki" );
+
+				if ( $ns == NS_IMAGE ) {
+					wfProfileIn( "$fname-image" );
+					if ( !wfIsBadImage( $nt->getDBkey(), $this->mTitle ) ) {
+						# recursively parse links inside the image caption
+						# actually, this will parse them in any other parameters, too,
+						# but it might be hard to fix that, and it doesn't matter ATM
+						$text = $this->replaceExternalLinks($text);
+						$text = $this->replaceInternalLinks($text);
+
+						# cloak any absolute URLs inside the image markup, so replaceExternalLinks() won't touch them
+						$s .= $prefix . $this->armorLinks( $this->makeImage( $nt, $text ) ) . $trail;
+						$this->mOutput->addImage( $nt->getDBkey() );
+
+						wfProfileOut( "$fname-image" );
+						continue;
+					} else {
+						# We still need to record the image's presence on the page
+						$this->mOutput->addImage( $nt->getDBkey() );
+					}
+					wfProfileOut( "$fname-image" );
+
+				}
+
+				if ( $ns == NS_CATEGORY ) {
+					wfProfileIn( "$fname-category" );
+					$s = rtrim($s . "\n"); # bug 87
+
+					if ( $wasblank ) {
+						$sortkey = $this->getDefaultSort();
+					} else {
+						$sortkey = $text;
+					}
+					$sortkey = Sanitizer::decodeCharReferences( $sortkey );
+					$sortkey = str_replace( "\n", '', $sortkey );
+					$sortkey = $wgContLang->convertCategoryKey( $sortkey );
+					$this->mOutput->addCategory( $nt->getDBkey(), $sortkey );
+
+					/**
+					 * Strip the whitespace Category links produce, see bug 87
+					 * @todo We might want to use trim($tmp, "\n") here.
+					 */
+					$s .= trim($prefix . $trail, "\n") == '' ? '': $prefix . $trail;
+
+					wfProfileOut( "$fname-category" );
+					continue;
+				}
+			}
+
+			# Self-link checking
+			if( $nt->getFragment() === '' ) {
+				if( in_array( $nt->getPrefixedText(), $selflink, true ) ) {
+					$s .= $prefix . $sk->makeSelfLinkObj( $nt, $text, '', $trail );
+					continue;
+				}
+			}
+
+			# Special and Media are pseudo-namespaces; no pages actually exist in them
+			if( $ns == NS_MEDIA ) {
+				$link = $sk->makeMediaLinkObj( $nt, $text );
+				# Cloak with NOPARSE to avoid replacement in replaceExternalLinks
+				$s .= $prefix . $this->armorLinks( $link ) . $trail;
+				$this->mOutput->addImage( $nt->getDBkey() );
+				continue;
+			} elseif( $ns == NS_SPECIAL ) {
+				if( SpecialPage::exists( $nt->getDBkey() ) ) {
+					$s .= $this->makeKnownLinkHolder( $nt, $text, '', $trail, $prefix );
+				} else {
+					$s .= $this->makeLinkHolder( $nt, $text, '', $trail, $prefix );
+				}
+				continue;
+			} elseif( $ns == NS_IMAGE ) {
+				$img = wfFindFile( $nt );
+				if( $img ) {
+					// Force a blue link if the file exists; may be a remote
+					// upload on the shared repository, and we want to see its
+					// auto-generated page.
+					$s .= $this->makeKnownLinkHolder( $nt, $text, '', $trail, $prefix );
+					$this->mOutput->addLink( $nt );
+					continue;
+				}
+			}
+			$s .= $this->makeLinkHolder( $nt, $text, '', $trail, $prefix );
+		}
+		wfProfileOut( $fname );
+		return $s;
+	}
+
+	/**
+	 * Make a link placeholder. The text returned can be later resolved to a real link with
+	 * replaceLinkHolders(). This is done for two reasons: firstly to avoid further
+	 * parsing of interwiki links, and secondly to allow all existence checks and
+	 * article length checks (for stub links) to be bundled into a single query.
+	 *
+	 */
+	function makeLinkHolder( &$nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
+		wfProfileIn( __METHOD__ );
+		if ( ! is_object($nt) ) {
+			# Fail gracefully
+			$retVal = "<!-- ERROR -->{$prefix}{$text}{$trail}";
+		} else {
+			# Separate the link trail from the rest of the link
+			list( $inside, $trail ) = Linker::splitTrail( $trail );
+
+			if ( $nt->isExternal() ) {
+				$nr = array_push( $this->mInterwikiLinkHolders['texts'], $prefix.$text.$inside );
+				$this->mInterwikiLinkHolders['titles'][] = $nt;
+				$retVal = '<!--IWLINK '. ($nr-1) ."-->{$trail}";
+			} else {
+				$nr = array_push( $this->mLinkHolders['namespaces'], $nt->getNamespace() );
+				$this->mLinkHolders['dbkeys'][] = $nt->getDBkey();
+				$this->mLinkHolders['queries'][] = $query;
+				$this->mLinkHolders['texts'][] = $prefix.$text.$inside;
+				$this->mLinkHolders['titles'][] = $nt;
+
+				$retVal = '<!--LINK '. ($nr-1) ."-->{$trail}";
+			}
+		}
+		wfProfileOut( __METHOD__ );
+		return $retVal;
+	}
+
+	/**
+	 * Render a forced-blue link inline; protect against double expansion of
+	 * URLs if we're in a mode that prepends full URL prefixes to internal links.
+	 * Since this little disaster has to split off the trail text to avoid
+	 * breaking URLs in the following text without breaking trails on the
+	 * wiki links, it's been made into a horrible function.
+	 *
+	 * @param Title $nt
+	 * @param string $text
+	 * @param string $query
+	 * @param string $trail
+	 * @param string $prefix
+	 * @return string HTML-wikitext mix oh yuck
+	 */
+	function makeKnownLinkHolder( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
+		list( $inside, $trail ) = Linker::splitTrail( $trail );
+		$sk = $this->mOptions->getSkin();
+		$link = $sk->makeKnownLinkObj( $nt, $text, $query, $inside, $prefix );
+		return $this->armorLinks( $link ) . $trail;
+	}
+
+	/**
+	 * Insert a NOPARSE hacky thing into any inline links in a chunk that's
+	 * going to go through further parsing steps before inline URL expansion.
+	 *
+	 * In particular this is important when using action=render, which causes
+	 * full URLs to be included.
+	 *
+	 * Oh man I hate our multi-layer parser!
+	 *
+	 * @param string more-or-less HTML
+	 * @return string less-or-more HTML with NOPARSE bits
+	 */
+	function armorLinks( $text ) {
+		return preg_replace( '/\b(' . wfUrlProtocols() . ')/',
+			"{$this->mUniqPrefix}NOPARSE$1", $text );
+	}
+
+	/**
+	 * Return true if subpage links should be expanded on this page.
+	 * @return bool
+	 */
+	function areSubpagesAllowed() {
+		# Some namespaces don't allow subpages
+		global $wgNamespacesWithSubpages;
+		return !empty($wgNamespacesWithSubpages[$this->mTitle->getNamespace()]);
+	}
+
+	/**
+	 * Handle link to subpage if necessary
+	 * @param string $target the source of the link
+	 * @param string &$text the link text, modified as necessary
+	 * @return string the full name of the link
+	 * @private
+	 */
+	function maybeDoSubpageLink($target, &$text) {
+		# Valid link forms:
+		# Foobar -- normal
+		# :Foobar -- override special treatment of prefix (images, language links)
+		# /Foobar -- convert to CurrentPage/Foobar
+		# /Foobar/ -- convert to CurrentPage/Foobar, strip the initial / from text
+		# ../ -- convert to CurrentPage, from CurrentPage/CurrentSubPage
+		# ../Foobar -- convert to CurrentPage/Foobar, from CurrentPage/CurrentSubPage
+
+		$fname = 'Parser::maybeDoSubpageLink';
+		wfProfileIn( $fname );
+		$ret = $target; # default return value is no change
+
+		# Some namespaces don't allow subpages,
+		# so only perform processing if subpages are allowed
+		if( $this->areSubpagesAllowed() ) {
+			$hash = strpos( $target, '#' );
+			if( $hash !== false ) {
+				$suffix = substr( $target, $hash );
+				$target = substr( $target, 0, $hash );
+			} else {
+				$suffix = '';
+			}
+			# bug 7425
+			$target = trim( $target );
+			# Look at the first character
+			if( $target != '' && $target{0} == '/' ) {
+				# / at end means we don't want the slash to be shown
+				$m = array();
+				$trailingSlashes = preg_match_all( '%(/+)$%', $target, $m );
+				if( $trailingSlashes ) {
+					$noslash = $target = substr( $target, 1, -strlen($m[0][0]) );
+				} else {
+					$noslash = substr( $target, 1 );
+				}
+
+				$ret = $this->mTitle->getPrefixedText(). '/' . trim($noslash) . $suffix;
+				if( '' === $text ) {
+					$text = $target . $suffix;
+				} # this might be changed for ugliness reasons
+			} else {
+				# check for .. subpage backlinks
+				$dotdotcount = 0;
+				$nodotdot = $target;
+				while( strncmp( $nodotdot, "../", 3 ) == 0 ) {
+					++$dotdotcount;
+					$nodotdot = substr( $nodotdot, 3 );
+				}
+				if($dotdotcount > 0) {
+					$exploded = explode( '/', $this->mTitle->GetPrefixedText() );
+					if( count( $exploded ) > $dotdotcount ) { # not allowed to go below top level page
+						$ret = implode( '/', array_slice( $exploded, 0, -$dotdotcount ) );
+						# / at the end means don't show full path
+						if( substr( $nodotdot, -1, 1 ) == '/' ) {
+							$nodotdot = substr( $nodotdot, 0, -1 );
+							if( '' === $text ) {
+								$text = $nodotdot . $suffix;
+							}
+						}
+						$nodotdot = trim( $nodotdot );
+						if( $nodotdot != '' ) {
+							$ret .= '/' . $nodotdot;
+						}
+						$ret .= $suffix;
+					}
+				}
+			}
+		}
+
+		wfProfileOut( $fname );
+		return $ret;
+	}
+
+	/**#@+
+	 * Used by doBlockLevels()
+	 * @private
+	 */
+	/* private */ function closeParagraph() {
+		$result = '';
+		if ( '' != $this->mLastSection ) {
+			$result = '</' . $this->mLastSection  . ">\n";
+		}
+		$this->mInPre = false;
+		$this->mLastSection = '';
+		return $result;
+	}
+	# getCommon() returns the length of the longest common substring
+	# of both arguments, starting at the beginning of both.
+	#
+	/* private */ function getCommon( $st1, $st2 ) {
+		$fl = strlen( $st1 );
+		$shorter = strlen( $st2 );
+		if ( $fl < $shorter ) { $shorter = $fl; }
+
+		for ( $i = 0; $i < $shorter; ++$i ) {
+			if ( $st1{$i} != $st2{$i} ) { break; }
+		}
+		return $i;
+	}
+	# These next three functions open, continue, and close the list
+	# element appropriate to the prefix character passed into them.
+	#
+	/* private */ function openList( $char ) {
+		$result = $this->closeParagraph();
+
+		if ( '*' == $char ) { $result .= '<ul><li>'; }
+		else if ( '#' == $char ) { $result .= '<ol><li>'; }
+		else if ( ':' == $char ) { $result .= '<dl><dd>'; }
+		else if ( ';' == $char ) {
+			$result .= '<dl><dt>';
+			$this->mDTopen = true;
+		}
+		else { $result = '<!-- ERR 1 -->'; }
+
+		return $result;
+	}
+
+	/* private */ function nextItem( $char ) {
+		if ( '*' == $char || '#' == $char ) { return '</li><li>'; }
+		else if ( ':' == $char || ';' == $char ) {
+			$close = '</dd>';
+			if ( $this->mDTopen ) { $close = '</dt>'; }
+			if ( ';' == $char ) {
+				$this->mDTopen = true;
+				return $close . '<dt>';
+			} else {
+				$this->mDTopen = false;
+				return $close . '<dd>';
+			}
+		}
+		return '<!-- ERR 2 -->';
+	}
+
+	/* private */ function closeList( $char ) {
+		if ( '*' == $char ) { $text = '</li></ul>'; }
+		else if ( '#' == $char ) { $text = '</li></ol>'; }
+		else if ( ':' == $char ) {
+			if ( $this->mDTopen ) {
+				$this->mDTopen = false;
+				$text = '</dt></dl>';
+			} else {
+				$text = '</dd></dl>';
+			}
+		}
+		else {	return '<!-- ERR 3 -->'; }
+		return $text."\n";
+	}
+	/**#@-*/
+
+	/**
+	 * Make lists from lines starting with ':', '*', '#', etc.
+	 *
+	 * @private
+	 * @return string the lists rendered as HTML
+	 */
+	function doBlockLevels( $text, $linestart ) {
+		$fname = 'Parser::doBlockLevels';
+		wfProfileIn( $fname );
+
+		# Parsing through the text line by line.  The main thing
+		# happening here is handling of block-level elements p, pre,
+		# and making lists from lines starting with * # : etc.
+		#
+		$textLines = explode( "\n", $text );
+
+		$lastPrefix = $output = '';
+		$this->mDTopen = $inBlockElem = false;
+		$prefixLength = 0;
+		$paragraphStack = false;
+
+		if ( !$linestart ) {
+			$output .= array_shift( $textLines );
+		}
+		foreach ( $textLines as $oLine ) {
+			$lastPrefixLength = strlen( $lastPrefix );
+			$preCloseMatch = preg_match('/<\\/pre/i', $oLine );
+			$preOpenMatch = preg_match('/<pre/i', $oLine );
+			if ( !$this->mInPre ) {
+				# Multiple prefixes may abut each other for nested lists.
+				$prefixLength = strspn( $oLine, '*#:;' );
+				$pref = substr( $oLine, 0, $prefixLength );
+
+				# eh?
+				$pref2 = str_replace( ';', ':', $pref );
+				$t = substr( $oLine, $prefixLength );
+				$this->mInPre = !empty($preOpenMatch);
+			} else {
+				# Don't interpret any other prefixes in preformatted text
+				$prefixLength = 0;
+				$pref = $pref2 = '';
+				$t = $oLine;
+			}
+
+			# List generation
+			if( $prefixLength && 0 == strcmp( $lastPrefix, $pref2 ) ) {
+				# Same as the last item, so no need to deal with nesting or opening stuff
+				$output .= $this->nextItem( substr( $pref, -1 ) );
+				$paragraphStack = false;
+
+				if ( substr( $pref, -1 ) == ';') {
+					# The one nasty exception: definition lists work like this:
+					# ; title : definition text
+					# So we check for : in the remainder text to split up the
+					# title and definition, without b0rking links.
+					$term = $t2 = '';
+					if ($this->findColonNoLinks($t, $term, $t2) !== false) {
+						$t = $t2;
+						$output .= $term . $this->nextItem( ':' );
+					}
+				}
+			} elseif( $prefixLength || $lastPrefixLength ) {
+				# Either open or close a level...
+				$commonPrefixLength = $this->getCommon( $pref, $lastPrefix );
+				$paragraphStack = false;
+
+				while( $commonPrefixLength < $lastPrefixLength ) {
+					$output .= $this->closeList( $lastPrefix{$lastPrefixLength-1} );
+					--$lastPrefixLength;
+				}
+				if ( $prefixLength <= $commonPrefixLength && $commonPrefixLength > 0 ) {
+					$output .= $this->nextItem( $pref{$commonPrefixLength-1} );
+				}
+				while ( $prefixLength > $commonPrefixLength ) {
+					$char = substr( $pref, $commonPrefixLength, 1 );
+					$output .= $this->openList( $char );
+
+					if ( ';' == $char ) {
+						# FIXME: This is dupe of code above
+						if ($this->findColonNoLinks($t, $term, $t2) !== false) {
+							$t = $t2;
+							$output .= $term . $this->nextItem( ':' );
+						}
+					}
+					++$commonPrefixLength;
+				}
+				$lastPrefix = $pref2;
+			}
+			if( 0 == $prefixLength ) {
+				wfProfileIn( "$fname-paragraph" );
+				# No prefix (not in list)--go to paragraph mode
+				// XXX: use a stack for nestable elements like span, table and div
+				$openmatch = preg_match('/(?:<table|<blockquote|<h1|<h2|<h3|<h4|<h5|<h6|<pre|<tr|<p|<ul|<ol|<li|<\\/tr|<\\/td|<\\/th)/iS', $t );
+				$closematch = preg_match(
+					'/(?:<\\/table|<\\/blockquote|<\\/h1|<\\/h2|<\\/h3|<\\/h4|<\\/h5|<\\/h6|'.
+					'<td|<th|<\\/?div|<hr|<\\/pre|<\\/p|'.$this->mUniqPrefix.'-pre|<\\/li|<\\/ul|<\\/ol|<\\/?center)/iS', $t );
+				if ( $openmatch or $closematch ) {
+					$paragraphStack = false;
+					# TODO bug 5718: paragraph closed
+					$output .= $this->closeParagraph();
+					if ( $preOpenMatch and !$preCloseMatch ) {
+						$this->mInPre = true;
+					}
+					if ( $closematch ) {
+						$inBlockElem = false;
+					} else {
+						$inBlockElem = true;
+					}
+				} else if ( !$inBlockElem && !$this->mInPre ) {
+					if ( ' ' == $t{0} and ( $this->mLastSection == 'pre' or trim($t) != '' ) ) {
+						// pre
+						if ($this->mLastSection != 'pre') {
+							$paragraphStack = false;
+							$output .= $this->closeParagraph().'<pre>';
+							$this->mLastSection = 'pre';
+						}
+						$t = substr( $t, 1 );
+					} else {
+						// paragraph
+						if ( '' == trim($t) ) {
+							if ( $paragraphStack ) {
+								$output .= $paragraphStack.'<br />';
+								$paragraphStack = false;
+								$this->mLastSection = 'p';
+							} else {
+								if ($this->mLastSection != 'p' ) {
+									$output .= $this->closeParagraph();
+									$this->mLastSection = '';
+									$paragraphStack = '<p>';
+								} else {
+									$paragraphStack = '</p><p>';
+								}
+							}
+						} else {
+							if ( $paragraphStack ) {
+								$output .= $paragraphStack;
+								$paragraphStack = false;
+								$this->mLastSection = 'p';
+							} else if ($this->mLastSection != 'p') {
+								$output .= $this->closeParagraph().'<p>';
+								$this->mLastSection = 'p';
+							}
+						}
+					}
+				}
+				wfProfileOut( "$fname-paragraph" );
+			}
+			// somewhere above we forget to get out of pre block (bug 785)
+			if($preCloseMatch && $this->mInPre) {
+				$this->mInPre = false;
+			}
+			if ($paragraphStack === false) {
+				$output .= $t."\n";
+			}
+		}
+		while ( $prefixLength ) {
+			$output .= $this->closeList( $pref2{$prefixLength-1} );
+			--$prefixLength;
+		}
+		if ( '' != $this->mLastSection ) {
+			$output .= '</' . $this->mLastSection . '>';
+			$this->mLastSection = '';
+		}
+
+		wfProfileOut( $fname );
+		return $output;
+	}
+
+	/**
+	 * Split up a string on ':', ignoring any occurences inside tags
+	 * to prevent illegal overlapping.
+	 * @param string $str the string to split
+	 * @param string &$before set to everything before the ':'
+	 * @param string &$after set to everything after the ':'
+	 * return string the position of the ':', or false if none found
+	 */
+	function findColonNoLinks($str, &$before, &$after) {
+		$fname = 'Parser::findColonNoLinks';
+		wfProfileIn( $fname );
+
+		$pos = strpos( $str, ':' );
+		if( $pos === false ) {
+			// Nothing to find!
+			wfProfileOut( $fname );
+			return false;
+		}
+
+		$lt = strpos( $str, '<' );
+		if( $lt === false || $lt > $pos ) {
+			// Easy; no tag nesting to worry about
+			$before = substr( $str, 0, $pos );
+			$after = substr( $str, $pos+1 );
+			wfProfileOut( $fname );
+			return $pos;
+		}
+
+		// Ugly state machine to walk through avoiding tags.
+		$state = self::COLON_STATE_TEXT;
+		$stack = 0;
+		$len = strlen( $str );
+		for( $i = 0; $i < $len; $i++ ) {
+			$c = $str{$i};
+
+			switch( $state ) {
+			// (Using the number is a performance hack for common cases)
+			case 0: // self::COLON_STATE_TEXT:
+				switch( $c ) {
+				case "<":
+					// Could be either a <start> tag or an </end> tag
+					$state = self::COLON_STATE_TAGSTART;
+					break;
+				case ":":
+					if( $stack == 0 ) {
+						// We found it!
+						$before = substr( $str, 0, $i );
+						$after = substr( $str, $i + 1 );
+						wfProfileOut( $fname );
+						return $i;
+					}
+					// Embedded in a tag; don't break it.
+					break;
+				default:
+					// Skip ahead looking for something interesting
+					$colon = strpos( $str, ':', $i );
+					if( $colon === false ) {
+						// Nothing else interesting
+						wfProfileOut( $fname );
+						return false;
+					}
+					$lt = strpos( $str, '<', $i );
+					if( $stack === 0 ) {
+						if( $lt === false || $colon < $lt ) {
+							// We found it!
+							$before = substr( $str, 0, $colon );
+							$after = substr( $str, $colon + 1 );
+							wfProfileOut( $fname );
+							return $i;
+						}
+					}
+					if( $lt === false ) {
+						// Nothing else interesting to find; abort!
+						// We're nested, but there's no close tags left. Abort!
+						break 2;
+					}
+					// Skip ahead to next tag start
+					$i = $lt;
+					$state = self::COLON_STATE_TAGSTART;
+				}
+				break;
+			case 1: // self::COLON_STATE_TAG:
+				// In a <tag>
+				switch( $c ) {
+				case ">":
+					$stack++;
+					$state = self::COLON_STATE_TEXT;
+					break;
+				case "/":
+					// Slash may be followed by >?
+					$state = self::COLON_STATE_TAGSLASH;
+					break;
+				default:
+					// ignore
+				}
+				break;
+			case 2: // self::COLON_STATE_TAGSTART:
+				switch( $c ) {
+				case "/":
+					$state = self::COLON_STATE_CLOSETAG;
+					break;
+				case "!":
+					$state = self::COLON_STATE_COMMENT;
+					break;
+				case ">":
+					// Illegal early close? This shouldn't happen D:
+					$state = self::COLON_STATE_TEXT;
+					break;
+				default:
+					$state = self::COLON_STATE_TAG;
+				}
+				break;
+			case 3: // self::COLON_STATE_CLOSETAG:
+				// In a </tag>
+				if( $c == ">" ) {
+					$stack--;
+					if( $stack < 0 ) {
+						wfDebug( "Invalid input in $fname; too many close tags\n" );
+						wfProfileOut( $fname );
+						return false;
+					}
+					$state = self::COLON_STATE_TEXT;
+				}
+				break;
+			case self::COLON_STATE_TAGSLASH:
+				if( $c == ">" ) {
+					// Yes, a self-closed tag <blah/>
+					$state = self::COLON_STATE_TEXT;
+				} else {
+					// Probably we're jumping the gun, and this is an attribute
+					$state = self::COLON_STATE_TAG;
+				}
+				break;
+			case 5: // self::COLON_STATE_COMMENT:
+				if( $c == "-" ) {
+					$state = self::COLON_STATE_COMMENTDASH;
+				}
+				break;
+			case self::COLON_STATE_COMMENTDASH:
+				if( $c == "-" ) {
+					$state = self::COLON_STATE_COMMENTDASHDASH;
+				} else {
+					$state = self::COLON_STATE_COMMENT;
+				}
+				break;
+			case self::COLON_STATE_COMMENTDASHDASH:
+				if( $c == ">" ) {
+					$state = self::COLON_STATE_TEXT;
+				} else {
+					$state = self::COLON_STATE_COMMENT;
+				}
+				break;
+			default:
+				throw new MWException( "State machine error in $fname" );
+			}
+		}
+		if( $stack > 0 ) {
+			wfDebug( "Invalid input in $fname; not enough close tags (stack $stack, state $state)\n" );
+			return false;
+		}
+		wfProfileOut( $fname );
+		return false;
+	}
+
+	/**
+	 * Return value of a magic variable (like PAGENAME)
+	 *
+	 * @private
+	 */
+	function getVariableValue( $index ) {
+		global $wgContLang, $wgSitename, $wgServer, $wgServerName, $wgScriptPath;
+
+		/**
+		 * Some of these require message or data lookups and can be
+		 * expensive to check many times.
+		 */
+		static $varCache = array();
+		if ( wfRunHooks( 'ParserGetVariableValueVarCache', array( &$this, &$varCache ) ) ) {
+			if ( isset( $varCache[$index] ) ) {
+				return $varCache[$index];
+			}
+		}
+
+		$ts = time();
+		wfRunHooks( 'ParserGetVariableValueTs', array( &$this, &$ts ) );
+
+		# Use the time zone
+		global $wgLocaltimezone;
+		if ( isset( $wgLocaltimezone ) ) {
+			$oldtz = getenv( 'TZ' );
+			putenv( 'TZ='.$wgLocaltimezone );
+		}
+		
+		wfSuppressWarnings(); // E_STRICT system time bitching
+		$localTimestamp = date( 'YmdHis', $ts );
+		$localMonth = date( 'm', $ts );
+		$localMonthName = date( 'n', $ts );
+		$localDay = date( 'j', $ts );
+		$localDay2 = date( 'd', $ts );
+		$localDayOfWeek = date( 'w', $ts );
+		$localWeek = date( 'W', $ts );
+		$localYear = date( 'Y', $ts );
+		$localHour = date( 'H', $ts );
+		if ( isset( $wgLocaltimezone ) ) {
+			putenv( 'TZ='.$oldtz );
+		}
+		wfRestoreWarnings();
+
+		switch ( $index ) {
+			case 'currentmonth':
+				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'm', $ts ) );
+			case 'currentmonthname':
+				return $varCache[$index] = $wgContLang->getMonthName( gmdate( 'n', $ts ) );
+			case 'currentmonthnamegen':
+				return $varCache[$index] = $wgContLang->getMonthNameGen( gmdate( 'n', $ts ) );
+			case 'currentmonthabbrev':
+				return $varCache[$index] = $wgContLang->getMonthAbbreviation( gmdate( 'n', $ts ) );
+			case 'currentday':
+				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'j', $ts ) );
+			case 'currentday2':
+				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'd', $ts ) );
+			case 'localmonth':
+				return $varCache[$index] = $wgContLang->formatNum( $localMonth );
+			case 'localmonthname':
+				return $varCache[$index] = $wgContLang->getMonthName( $localMonthName );
+			case 'localmonthnamegen':
+				return $varCache[$index] = $wgContLang->getMonthNameGen( $localMonthName );
+			case 'localmonthabbrev':
+				return $varCache[$index] = $wgContLang->getMonthAbbreviation( $localMonthName );
+			case 'localday':
+				return $varCache[$index] = $wgContLang->formatNum( $localDay );
+			case 'localday2':
+				return $varCache[$index] = $wgContLang->formatNum( $localDay2 );
+			case 'pagename':
+				return wfEscapeWikiText( $this->mTitle->getText() );
+			case 'pagenamee':
+				return $this->mTitle->getPartialURL();
+			case 'fullpagename':
+				return wfEscapeWikiText( $this->mTitle->getPrefixedText() );
+			case 'fullpagenamee':
+				return $this->mTitle->getPrefixedURL();
+			case 'subpagename':
+				return wfEscapeWikiText( $this->mTitle->getSubpageText() );
+			case 'subpagenamee':
+				return $this->mTitle->getSubpageUrlForm();
+			case 'basepagename':
+				return wfEscapeWikiText( $this->mTitle->getBaseText() );
+			case 'basepagenamee':
+				return wfUrlEncode( str_replace( ' ', '_', $this->mTitle->getBaseText() ) );
+			case 'talkpagename':
+				if( $this->mTitle->canTalk() ) {
+					$talkPage = $this->mTitle->getTalkPage();
+					return wfEscapeWikiText( $talkPage->getPrefixedText() );
+				} else {
+					return '';
+				}
+			case 'talkpagenamee':
+				if( $this->mTitle->canTalk() ) {
+					$talkPage = $this->mTitle->getTalkPage();
+					return $talkPage->getPrefixedUrl();
+				} else {
+					return '';
+				}
+			case 'subjectpagename':
+				$subjPage = $this->mTitle->getSubjectPage();
+				return wfEscapeWikiText( $subjPage->getPrefixedText() );
+			case 'subjectpagenamee':
+				$subjPage = $this->mTitle->getSubjectPage();
+				return $subjPage->getPrefixedUrl();
+			case 'revisionid':
+				return $this->mRevisionId;
+			case 'revisionday':
+				return intval( substr( $this->getRevisionTimestamp(), 6, 2 ) );
+			case 'revisionday2':
+				return substr( $this->getRevisionTimestamp(), 6, 2 );
+			case 'revisionmonth':
+				return intval( substr( $this->getRevisionTimestamp(), 4, 2 ) );
+			case 'revisionyear':
+				return substr( $this->getRevisionTimestamp(), 0, 4 );
+			case 'revisiontimestamp':
+				return $this->getRevisionTimestamp();
+			case 'namespace':
+				return str_replace('_',' ',$wgContLang->getNsText( $this->mTitle->getNamespace() ) );
+			case 'namespacee':
+				return wfUrlencode( $wgContLang->getNsText( $this->mTitle->getNamespace() ) );
+			case 'talkspace':
+				return $this->mTitle->canTalk() ? str_replace('_',' ',$this->mTitle->getTalkNsText()) : '';
+			case 'talkspacee':
+				return $this->mTitle->canTalk() ? wfUrlencode( $this->mTitle->getTalkNsText() ) : '';
+			case 'subjectspace':
+				return $this->mTitle->getSubjectNsText();
+			case 'subjectspacee':
+				return( wfUrlencode( $this->mTitle->getSubjectNsText() ) );
+			case 'currentdayname':
+				return $varCache[$index] = $wgContLang->getWeekdayName( gmdate( 'w', $ts ) + 1 );
+			case 'currentyear':
+				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'Y', $ts ), true );
+			case 'currenttime':
+				return $varCache[$index] = $wgContLang->time( wfTimestamp( TS_MW, $ts ), false, false );
+			case 'currenthour':
+				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'H', $ts ), true );
+			case 'currentweek':
+				// @bug 4594 PHP5 has it zero padded, PHP4 does not, cast to
+				// int to remove the padding
+				return $varCache[$index] = $wgContLang->formatNum( (int)gmdate( 'W', $ts ) );
+			case 'currentdow':
+				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'w', $ts ) );
+			case 'localdayname':
+				return $varCache[$index] = $wgContLang->getWeekdayName( $localDayOfWeek + 1 );
+			case 'localyear':
+				return $varCache[$index] = $wgContLang->formatNum( $localYear, true );
+			case 'localtime':
+				return $varCache[$index] = $wgContLang->time( $localTimestamp, false, false );
+			case 'localhour':
+				return $varCache[$index] = $wgContLang->formatNum( $localHour, true );
+			case 'localweek':
+				// @bug 4594 PHP5 has it zero padded, PHP4 does not, cast to
+				// int to remove the padding
+				return $varCache[$index] = $wgContLang->formatNum( (int)$localWeek );
+			case 'localdow':
+				return $varCache[$index] = $wgContLang->formatNum( $localDayOfWeek );
+			case 'numberofarticles':
+				return $varCache[$index] = $wgContLang->formatNum( SiteStats::articles() );
+			case 'numberoffiles':
+				return $varCache[$index] = $wgContLang->formatNum( SiteStats::images() );
+			case 'numberofusers':
+				return $varCache[$index] = $wgContLang->formatNum( SiteStats::users() );
+			case 'numberofpages':
+				return $varCache[$index] = $wgContLang->formatNum( SiteStats::pages() );
+			case 'numberofadmins':
+				return $varCache[$index]  = $wgContLang->formatNum( SiteStats::admins() );
+			case 'numberofedits':
+				return $varCache[$index]  = $wgContLang->formatNum( SiteStats::edits() );
+			case 'currenttimestamp':
+				return $varCache[$index] = wfTimestampNow();
+			case 'localtimestamp':
+				return $varCache[$index] = $localTimestamp;
+			case 'currentversion':
+				return $varCache[$index] = SpecialVersion::getVersion();
+			case 'sitename':
+				return $wgSitename;
+			case 'server':
+				return $wgServer;
+			case 'servername':
+				return $wgServerName;
+			case 'scriptpath':
+				return $wgScriptPath;
+			case 'directionmark':
+				return $wgContLang->getDirMark();
+			case 'contentlanguage':
+				global $wgContLanguageCode;
+				return $wgContLanguageCode;
+			default:
+				$ret = null;
+				if ( wfRunHooks( 'ParserGetVariableValueSwitch', array( &$this, &$varCache, &$index, &$ret ) ) )
+					return $ret;
+				else
+					return null;
+		}
+	}
+
+	/**
+	 * initialise the magic variables (like CURRENTMONTHNAME)
+	 *
+	 * @private
+	 */
+	function initialiseVariables() {
+		$fname = 'Parser::initialiseVariables';
+		wfProfileIn( $fname );
+		$variableIDs = MagicWord::getVariableIDs();
+
+		$this->mVariables = array();
+		foreach ( $variableIDs as $id ) {
+			$mw =& MagicWord::get( $id );
+			$mw->addToArray( $this->mVariables, $id );
+		}
+		wfProfileOut( $fname );
+	}
+
+	/**
+	 * parse any parentheses in format ((title|part|part))
+	 * and call callbacks to get a replacement text for any found piece
+	 *
+	 * @param string $text The text to parse
+	 * @param array $callbacks rules in form:
+	 *     '{' => array(				# opening parentheses
+	 *					'end' => '}',   # closing parentheses
+	 *					'cb' => array(2 => callback,	# replacement callback to call if {{..}} is found
+	 *								  3 => callback 	# replacement callback to call if {{{..}}} is found
+	 *								  )
+	 *					)
+	 * 					'min' => 2,     # Minimum parenthesis count in cb
+	 * 					'max' => 3,     # Maximum parenthesis count in cb
+	 * @private
+	 */
+	function replace_callback ($text, $callbacks) {
+		wfProfileIn( __METHOD__ );
+		$openingBraceStack = array();	# this array will hold a stack of parentheses which are not closed yet
+		$lastOpeningBrace = -1;			# last not closed parentheses
+
+		$validOpeningBraces = implode( '', array_keys( $callbacks ) );
+
+		$i = 0;
+		while ( $i < strlen( $text ) ) {
+			# Find next opening brace, closing brace or pipe
+			if ( $lastOpeningBrace == -1 ) {
+				$currentClosing = '';
+				$search = $validOpeningBraces;
+			} else {
+				$currentClosing = $openingBraceStack[$lastOpeningBrace]['braceEnd'];
+				$search = $validOpeningBraces . '|' . $currentClosing;
+			}
+			$rule = null;
+			$i += strcspn( $text, $search, $i );
+			if ( $i < strlen( $text ) ) {
+				if ( $text[$i] == '|' ) {
+					$found = 'pipe';
+				} elseif ( $text[$i] == $currentClosing ) {
+					$found = 'close';
+				} elseif ( isset( $callbacks[$text[$i]] ) ) {
+					$found = 'open';
+					$rule = $callbacks[$text[$i]];
+				} else {
+					# Some versions of PHP have a strcspn which stops on null characters
+					# Ignore and continue
+					++$i;
+					continue;
+				}
+			} else {
+				# All done
+				break;
+			}
+
+			if ( $found == 'open' ) {
+				# found opening brace, let's add it to parentheses stack
+				$piece = array('brace' => $text[$i],
+							   'braceEnd' => $rule['end'],
+							   'title' => '',
+							   'parts' => null);
+
+				# count opening brace characters
+				$piece['count'] = strspn( $text, $piece['brace'], $i );
+				$piece['startAt'] = $piece['partStart'] = $i + $piece['count'];
+				$i += $piece['count'];
+
+				# we need to add to stack only if opening brace count is enough for one of the rules
+				if ( $piece['count'] >= $rule['min'] ) {
+					$lastOpeningBrace ++;
+					$openingBraceStack[$lastOpeningBrace] = $piece;
+				}
+			} elseif ( $found == 'close' ) {
+				# lets check if it is enough characters for closing brace
+				$maxCount = $openingBraceStack[$lastOpeningBrace]['count'];
+				$count = strspn( $text, $text[$i], $i, $maxCount );
+
+				# check for maximum matching characters (if there are 5 closing
+				# characters, we will probably need only 3 - depending on the rules)
+				$matchingCount = 0;
+				$matchingCallback = null;
+				$cbType = $callbacks[$openingBraceStack[$lastOpeningBrace]['brace']];
+				if ( $count > $cbType['max'] ) {
+					# The specified maximum exists in the callback array, unless the caller
+					# has made an error
+					$matchingCount = $cbType['max'];
+				} else {
+					# Count is less than the maximum
+					# Skip any gaps in the callback array to find the true largest match
+					# Need to use array_key_exists not isset because the callback can be null
+					$matchingCount = $count;
+					while ( $matchingCount > 0 && !array_key_exists( $matchingCount, $cbType['cb'] ) ) {
+						--$matchingCount;
+					}
+				}
+
+				if ($matchingCount <= 0) {
+					$i += $count;
+					continue;
+				}
+				$matchingCallback = $cbType['cb'][$matchingCount];
+
+				# let's set a title or last part (if '|' was found)
+				if (null === $openingBraceStack[$lastOpeningBrace]['parts']) {
+					$openingBraceStack[$lastOpeningBrace]['title'] =
+						substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'],
+						$i - $openingBraceStack[$lastOpeningBrace]['partStart']);
+				} else {
+					$openingBraceStack[$lastOpeningBrace]['parts'][] =
+						substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'],
+						$i - $openingBraceStack[$lastOpeningBrace]['partStart']);
+				}
+
+				$pieceStart = $openingBraceStack[$lastOpeningBrace]['startAt'] - $matchingCount;
+				$pieceEnd = $i + $matchingCount;
+
+				if( is_callable( $matchingCallback ) ) {
+					$cbArgs = array (
+									 'text' => substr($text, $pieceStart, $pieceEnd - $pieceStart),
+									 'title' => trim($openingBraceStack[$lastOpeningBrace]['title']),
+									 'parts' => $openingBraceStack[$lastOpeningBrace]['parts'],
+									 'lineStart' => (($pieceStart > 0) && ($text[$pieceStart-1] == "\n")),
+									 );
+					# finally we can call a user callback and replace piece of text
+					$replaceWith = call_user_func( $matchingCallback, $cbArgs );
+					$text = substr($text, 0, $pieceStart) . $replaceWith . substr($text, $pieceEnd);
+					$i = $pieceStart + strlen($replaceWith);
+				} else {
+					# null value for callback means that parentheses should be parsed, but not replaced
+					$i += $matchingCount;
+				}
+
+				# reset last opening parentheses, but keep it in case there are unused characters
+				$piece = array('brace' => $openingBraceStack[$lastOpeningBrace]['brace'],
+							   'braceEnd' => $openingBraceStack[$lastOpeningBrace]['braceEnd'],
+							   'count' => $openingBraceStack[$lastOpeningBrace]['count'],
+							   'title' => '',
+							   'parts' => null,
+							   'startAt' => $openingBraceStack[$lastOpeningBrace]['startAt']);
+				$openingBraceStack[$lastOpeningBrace--] = null;
+
+				if ($matchingCount < $piece['count']) {
+					$piece['count'] -= $matchingCount;
+					$piece['startAt'] -= $matchingCount;
+					$piece['partStart'] = $piece['startAt'];
+					# do we still qualify for any callback with remaining count?
+					$currentCbList = $callbacks[$piece['brace']]['cb'];
+					while ( $piece['count'] ) {
+						if ( array_key_exists( $piece['count'], $currentCbList ) ) {
+							$lastOpeningBrace++;
+							$openingBraceStack[$lastOpeningBrace] = $piece;
+							break;
+						}
+						--$piece['count'];
+					}
+				}
+			} elseif ( $found == 'pipe' ) {
+				# lets set a title if it is a first separator, or next part otherwise
+				if (null === $openingBraceStack[$lastOpeningBrace]['parts']) {
+					$openingBraceStack[$lastOpeningBrace]['title'] =
+						substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'],
+						$i - $openingBraceStack[$lastOpeningBrace]['partStart']);
+					$openingBraceStack[$lastOpeningBrace]['parts'] = array();
+				} else {
+					$openingBraceStack[$lastOpeningBrace]['parts'][] =
+						substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'],
+						$i - $openingBraceStack[$lastOpeningBrace]['partStart']);
+				}
+				$openingBraceStack[$lastOpeningBrace]['partStart'] = ++$i;
+			}
+		}
+
+		wfProfileOut( __METHOD__ );
+		return $text;
+	}
+
+	/**
+	 * Replace magic variables, templates, and template arguments
+	 * with the appropriate text. Templates are substituted recursively,
+	 * taking care to avoid infinite loops.
+	 *
+	 * Note that the substitution depends on value of $mOutputType:
+	 *  self::OT_WIKI: only {{subst:}} templates
+	 *  self::OT_MSG: only magic variables
+	 *  self::OT_HTML: all templates and magic variables
+	 *
+	 * @param string $tex The text to transform
+	 * @param array $args Key-value pairs representing template parameters to substitute
+	 * @param bool $argsOnly Only do argument (triple-brace) expansion, not double-brace expansion
+	 * @private
+	 */
+	function replaceVariables( $text, $args = array(), $argsOnly = false ) {
+		# Prevent too big inclusions
+		if( strlen( $text ) > $this->mOptions->getMaxIncludeSize() ) {
+			return $text;
+		}
+
+		$fname = __METHOD__ /*. '-L' . count( $this->mArgStack )*/;
+		wfProfileIn( $fname );
+
+		# This function is called recursively. To keep track of arguments we need a stack:
+		array_push( $this->mArgStack, $args );
+
+		$braceCallbacks = array();
+		if ( !$argsOnly ) {
+			$braceCallbacks[2] = array( &$this, 'braceSubstitution' );
+		}
+		if ( $this->mOutputType != self::OT_MSG ) {
+			$braceCallbacks[3] = array( &$this, 'argSubstitution' );
+		}
+		if ( $braceCallbacks ) {
+			$callbacks = array(
+				'{' => array(
+					'end' => '}',
+					'cb' => $braceCallbacks,
+					'min' => $argsOnly ? 3 : 2,
+					'max' => isset( $braceCallbacks[3] ) ? 3 : 2,
+				),
+				'[' => array(
+					'end' => ']',
+					'cb' => array(2=>null),
+					'min' => 2,
+					'max' => 2,
+				)
+			);
+			$text = $this->replace_callback ($text, $callbacks);
+
+			array_pop( $this->mArgStack );
+		}
+		wfProfileOut( $fname );
+		return $text;
+	}
+
+	/**
+	 * Replace magic variables
+	 * @private
+	 */
+	function variableSubstitution( $matches ) {
+		global $wgContLang;
+		$fname = 'Parser::variableSubstitution';
+		$varname = $wgContLang->lc($matches[1]);
+		wfProfileIn( $fname );
+		$skip = false;
+		if ( $this->mOutputType == self::OT_WIKI ) {
+			# Do only magic variables prefixed by SUBST
+			$mwSubst =& MagicWord::get( 'subst' );
+			if (!$mwSubst->matchStartAndRemove( $varname ))
+				$skip = true;
+			# Note that if we don't substitute the variable below,
+			# we don't remove the {{subst:}} magic word, in case
+			# it is a template rather than a magic variable.
+		}
+		if ( !$skip && array_key_exists( $varname, $this->mVariables ) ) {
+			$id = $this->mVariables[$varname];
+			# Now check if we did really match, case sensitive or not
+			$mw =& MagicWord::get( $id );
+			if ($mw->match($matches[1])) {
+				$text = $this->getVariableValue( $id );
+				if (MagicWord::getCacheTTL($id)>-1)
+					$this->mOutput->mContainsOldMagic = true;
+			} else {
+				$text = $matches[0];
+			}
+		} else {
+			$text = $matches[0];
+		}
+		wfProfileOut( $fname );
+		return $text;
+	}
+
+
+	/// Clean up argument array - refactored in 1.9 so parserfunctions can use it, too.
+	static function createAssocArgs( $args ) {
+		$assocArgs = array();
+		$index = 1;
+		foreach( $args as $arg ) {
+			$eqpos = strpos( $arg, '=' );
+			if ( $eqpos === false ) {
+				$assocArgs[$index++] = $arg;
+			} else {
+				$name = trim( substr( $arg, 0, $eqpos ) );
+				$value = trim( substr( $arg, $eqpos+1 ) );
+				if ( $value === false ) {
+					$value = '';
+				}
+				if ( $name !== false ) {
+					$assocArgs[$name] = $value;
+				}
+			}
+		}
+
+		return $assocArgs;
+	}
+
+	/**
+	 * Return the text of a template, after recursively
+	 * replacing any variables or templates within the template.
+	 *
+	 * @param array $piece The parts of the template
+	 *  $piece['text']: matched text
+	 *  $piece['title']: the title, i.e. the part before the |
+	 *  $piece['parts']: the parameter array
+	 * @return string the text of the template
+	 * @private
+	 */
+	function braceSubstitution( $piece ) {
+		global $wgContLang, $wgLang, $wgAllowDisplayTitle, $wgNonincludableNamespaces;
+		$fname = __METHOD__ /*. '-L' . count( $this->mArgStack )*/;
+		wfProfileIn( $fname );
+		wfProfileIn( __METHOD__.'-setup' );
+
+		# Flags
+		$found = false;             # $text has been filled
+		$nowiki = false;            # wiki markup in $text should be escaped
+		$noparse = false;           # Unsafe HTML tags should not be stripped, etc.
+		$noargs = false;            # Don't replace triple-brace arguments in $text
+		$replaceHeadings = false;   # Make the edit section links go to the template not the article
+                $headingOffset = 0;         # Skip headings when number, to account for those that weren't transcluded.
+		$isHTML = false;            # $text is HTML, armour it against wikitext transformation
+		$forceRawInterwiki = false; # Force interwiki transclusion to be done in raw mode not rendered
+
+		# Title object, where $text came from
+		$title = NULL;
+
+		$linestart = '';
+
+
+		# $part1 is the bit before the first |, and must contain only title characters
+		# $args is a list of arguments, starting from index 0, not including $part1
+
+		$titleText = $part1 = $piece['title'];
+		# If the third subpattern matched anything, it will start with |
+
+		if (null == $piece['parts']) {
+			$replaceWith = $this->variableSubstitution (array ($piece['text'], $piece['title']));
+			if ($replaceWith != $piece['text']) {
+				$text = $replaceWith;
+				$found = true;
+				$noparse = true;
+				$noargs = true;
+			}
+		}
+
+		$args = (null == $piece['parts']) ? array() : $piece['parts'];
+		wfProfileOut( __METHOD__.'-setup' );
+
+		# SUBST
+		wfProfileIn( __METHOD__.'-modifiers' );
+		if ( !$found ) {
+			$mwSubst =& MagicWord::get( 'subst' );
+			if ( $mwSubst->matchStartAndRemove( $part1 ) xor $this->ot['wiki'] ) {
+				# One of two possibilities is true:
+				# 1) Found SUBST but not in the PST phase
+				# 2) Didn't find SUBST and in the PST phase
+				# In either case, return without further processing
+				$text = $piece['text'];
+				$found = true;
+				$noparse = true;
+				$noargs = true;
+			}
+		}
+
+		# MSG, MSGNW and RAW
+		if ( !$found ) {
+			# Check for MSGNW:
+			$mwMsgnw =& MagicWord::get( 'msgnw' );
+			if ( $mwMsgnw->matchStartAndRemove( $part1 ) ) {
+				$nowiki = true;
+			} else {
+				# Remove obsolete MSG:
+				$mwMsg =& MagicWord::get( 'msg' );
+				$mwMsg->matchStartAndRemove( $part1 );
+			}
+
+			# Check for RAW:
+			$mwRaw =& MagicWord::get( 'raw' );
+			if ( $mwRaw->matchStartAndRemove( $part1 ) ) {
+				$forceRawInterwiki = true;
+			}
+		}
+		wfProfileOut( __METHOD__.'-modifiers' );
+
+		//save path level before recursing into functions & templates.
+		$lastPathLevel = $this->mTemplatePath;
+
+		# Parser functions
+		if ( !$found ) {
+			wfProfileIn( __METHOD__ . '-pfunc' );
+
+			$colonPos = strpos( $part1, ':' );
+			if ( $colonPos !== false ) {
+				# Case sensitive functions
+				$function = substr( $part1, 0, $colonPos );
+				if ( isset( $this->mFunctionSynonyms[1][$function] ) ) {
+					$function = $this->mFunctionSynonyms[1][$function];
+				} else {
+					# Case insensitive functions
+					$function = strtolower( $function );
+					if ( isset( $this->mFunctionSynonyms[0][$function] ) ) {
+						$function = $this->mFunctionSynonyms[0][$function];
+					} else {
+						$function = false;
+					}
+				}
+				if ( $function ) {
+					$funcArgs = array_map( 'trim', $args );
+					$funcArgs = array_merge( array( &$this, trim( substr( $part1, $colonPos + 1 ) ) ), $funcArgs );
+					$result = call_user_func_array( $this->mFunctionHooks[$function], $funcArgs );
+					$found = true;
+
+					// The text is usually already parsed, doesn't need triple-brace tags expanded, etc.
+					//$noargs = true;
+					//$noparse = true;
+
+					if ( is_array( $result ) ) {
+						if ( isset( $result[0] ) ) {
+							$text = $linestart . $result[0];
+							unset( $result[0] );
+						}
+
+						// Extract flags into the local scope
+						// This allows callers to set flags such as nowiki, noparse, found, etc.
+						extract( $result );
+					} else {
+						$text = $linestart . $result;
+					}
+				}
+			}
+			wfProfileOut( __METHOD__ . '-pfunc' );
+		}
+
+		# Template table test
+
+		# Did we encounter this template already? If yes, it is in the cache
+		# and we need to check for loops.
+		if ( !$found && isset( $this->mTemplates[$piece['title']] ) ) {
+			$found = true;
+
+			# Infinite loop test
+			if ( isset( $this->mTemplatePath[$part1] ) ) {
+				$noparse = true;
+				$noargs = true;
+				$found = true;
+				$text = $linestart .
+					"[[$part1]]<!-- WARNING: template loop detected -->";
+				wfDebug( __METHOD__.": template loop broken at '$part1'\n" );
+			} else {
+				# set $text to cached message.
+				$text = $linestart . $this->mTemplates[$piece['title']];
+				#treat title for cached page the same as others
+				$ns = NS_TEMPLATE;
+				$subpage = '';
+				$part1 = $this->maybeDoSubpageLink( $part1, $subpage );
+				if ($subpage !== '') {
+				  $ns = $this->mTitle->getNamespace();
+				}
+				$title = Title::newFromText( $part1, $ns );
+				//used by include size checking
+				$titleText = $title->getPrefixedText();
+				//used by edit section links
+				$replaceHeadings = true;
+				
+			}
+		}
+
+		# Load from database
+		if ( !$found ) {
+			wfProfileIn( __METHOD__ . '-loadtpl' );
+			$ns = NS_TEMPLATE;
+			# declaring $subpage directly in the function call
+			# does not work correctly with references and breaks
+			# {{/subpage}}-style inclusions
+			$subpage = '';
+			$part1 = $this->maybeDoSubpageLink( $part1, $subpage );
+			if ($subpage !== '') {
+				$ns = $this->mTitle->getNamespace();
+			}
+			$title = Title::newFromText( $part1, $ns );
+
+
+			if ( !is_null( $title ) ) {
+				$titleText = $title->getPrefixedText();
+				# Check for language variants if the template is not found
+				if($wgContLang->hasVariants() && $title->getArticleID() == 0){
+					$wgContLang->findVariantLink($part1, $title);
+				}
+
+				if ( !$title->isExternal() ) {
+					if ( $title->getNamespace() == NS_SPECIAL && $this->mOptions->getAllowSpecialInclusion() && $this->ot['html'] ) {
+						$text = SpecialPage::capturePath( $title );
+						if ( is_string( $text ) ) {
+							$found = true;
+							$noparse = true;
+							$noargs = true;
+							$isHTML = true;
+							$this->disableCache();
+						}
+					} else if ( $wgNonincludableNamespaces && in_array( $title->getNamespace(), $wgNonincludableNamespaces ) ) {
+						$found = false; //access denied
+						wfDebug( "$fname: template inclusion denied for " . $title->getPrefixedDBkey() );
+					} else {
+						list($articleContent,$title) = $this->fetchTemplateAndtitle( $title );
+						if ( $articleContent !== false ) {
+							$found = true;
+							$text = $articleContent;
+							$replaceHeadings = true;
+						}
+					}
+
+					# If the title is valid but undisplayable, make a link to it
+					if ( !$found && ( $this->ot['html'] || $this->ot['pre'] ) ) {
+						$text = "[[:$titleText]]";
+						$found = true;
+					}
+				} elseif ( $title->isTrans() ) {
+					// Interwiki transclusion
+					if ( $this->ot['html'] && !$forceRawInterwiki ) {
+						$text = $this->interwikiTransclude( $title, 'render' );
+						$isHTML = true;
+						$noparse = true;
+					} else {
+						$text = $this->interwikiTransclude( $title, 'raw' );
+						$replaceHeadings = true;
+					}
+					$found = true;
+				}
+
+				# Template cache array insertion
+				# Use the original $piece['title'] not the mangled $part1, so that
+				# modifiers such as RAW: produce separate cache entries
+				if( $found ) {
+					if( $isHTML ) {
+						// A special page; don't store it in the template cache.
+					} else {
+						$this->mTemplates[$piece['title']] = $text;
+					}
+					$text = $linestart . $text;
+				}
+			}
+			wfProfileOut( __METHOD__ . '-loadtpl' );
+		}
+
+		if ( $found && !$this->incrementIncludeSize( 'pre-expand', strlen( $text ) ) ) {
+			# Error, oversize inclusion
+			$text = $linestart .
+				"[[$titleText]]<!-- WARNING: template omitted, pre-expand include size too large -->";
+			$noparse = true;
+			$noargs = true;
+		}
+
+		# Recursive parsing, escaping and link table handling
+		# Only for HTML output
+		if ( $nowiki && $found && ( $this->ot['html'] || $this->ot['pre'] ) ) {
+			$text = wfEscapeWikiText( $text );
+		} elseif ( !$this->ot['msg'] && $found ) {
+			if ( $noargs ) {
+				$assocArgs = array();
+			} else {
+				# Clean up argument array
+				$assocArgs = self::createAssocArgs($args);
+				# Add a new element to the templace recursion path
+				$this->mTemplatePath[$part1] = 1;
+			}
+
+			if ( !$noparse ) {
+				# If there are any <onlyinclude> tags, only include them
+				if ( in_string( '<onlyinclude>', $text ) && in_string( '</onlyinclude>', $text ) ) {
+					$replacer = new OnlyIncludeReplacer;
+					StringUtils::delimiterReplaceCallback( '<onlyinclude>', '</onlyinclude>', 
+						array( &$replacer, 'replace' ), $text );
+					$text = $replacer->output;
+				}
+				# Remove <noinclude> sections and <includeonly> tags
+				$text = StringUtils::delimiterReplace( '<noinclude>', '</noinclude>', '', $text );
+				$text = strtr( $text, array( '<includeonly>' => '' , '</includeonly>' => '' ) );
+
+				if( $this->ot['html'] || $this->ot['pre'] ) {
+					# Strip <nowiki>, <pre>, etc.
+					$text = $this->strip( $text, $this->mStripState );
+					if ( $this->ot['html'] ) {
+						$text = Sanitizer::removeHTMLtags( $text, array( &$this, 'replaceVariables' ), $assocArgs );
+					} elseif ( $this->ot['pre'] && $this->mOptions->getRemoveComments() ) {
+						$text = Sanitizer::removeHTMLcomments( $text );
+					}
+				}
+				$text = $this->replaceVariables( $text, $assocArgs );
+
+				# If the template begins with a table or block-level
+				# element, it should be treated as beginning a new line.
+				if (!$piece['lineStart'] && preg_match('/^(?:{\\||:|;|#|\*)/', $text)) /*}*/{
+					$text = "\n" . $text;
+				}
+			} elseif ( !$noargs ) {
+				# $noparse and !$noargs
+				# Just replace the arguments, not any double-brace items
+				# This is used for rendered interwiki transclusion
+				$text = $this->replaceVariables( $text, $assocArgs, true );
+			}
+		}
+		# Prune lower levels off the recursion check path
+		$this->mTemplatePath = $lastPathLevel;
+
+		if ( $found && !$this->incrementIncludeSize( 'post-expand', strlen( $text ) ) ) {
+			# Error, oversize inclusion
+			$text = $linestart .
+				"[[$titleText]]<!-- WARNING: template omitted, post-expand include size too large -->";
+			$noparse = true;
+			$noargs = true;
+		}
+
+		if ( !$found ) {
+			wfProfileOut( $fname );
+			return $piece['text'];
+		} else {
+			wfProfileIn( __METHOD__ . '-placeholders' );
+			if ( $isHTML ) {
+				# Replace raw HTML by a placeholder
+				# Add a blank line preceding, to prevent it from mucking up
+				# immediately preceding headings
+				$text = "\n\n" . $this->insertStripItem( $text, $this->mStripState );
+			} else {
+				# replace ==section headers==
+				# XXX this needs to go away once we have a better parser.
+				if ( !$this->ot['wiki'] && !$this->ot['pre'] && $replaceHeadings ) {
+					if( !is_null( $title ) )
+						$encodedname = base64_encode($title->getPrefixedDBkey());
+					else
+						$encodedname = base64_encode("");
+					$m = preg_split('/(^={1,6}.*?={1,6}\s*?$)/m', $text, -1,
+						PREG_SPLIT_DELIM_CAPTURE);
+					$text = '';
+					$nsec = $headingOffset;
+
+					for( $i = 0; $i < count($m); $i += 2 ) {
+						$text .= $m[$i];
+						if (!isset($m[$i + 1]) || $m[$i + 1] == "") continue;
+						$hl = $m[$i + 1];
+						if( strstr($hl, "<!--MWTEMPLATESECTION") ) {
+							$text .= $hl;
+							continue;
+						}
+						$m2 = array();
+						preg_match('/^(={1,6})(.*?)(={1,6}\s*?)$/m', $hl, $m2);
+						$text .= $m2[1] . $m2[2] . "<!--MWTEMPLATESECTION="
+							. $encodedname . "&" . base64_encode("$nsec") . "-->" . $m2[3];
+
+						$nsec++;
+					}
+				}
+			}
+			wfProfileOut( __METHOD__ . '-placeholders' );
+		}
+
+		# Prune lower levels off the recursion check path
+		$this->mTemplatePath = $lastPathLevel;
+
+		if ( !$found ) {
+			wfProfileOut( $fname );
+			return $piece['text'];
+		} else {
+			wfProfileOut( $fname );
+			return $text;
+		}
+	}
+
+	/**
+	 * Fetch the unparsed text of a template and register a reference to it.
+	 */
+	function fetchTemplateAndTitle( $title ) {
+		$templateCb = $this->mOptions->getTemplateCallback();
+		$stuff = call_user_func( $templateCb, $title );
+		$text = $stuff['text'];
+		$finalTitle = isset( $stuff['finalTitle'] ) ? $stuff['finalTitle'] : $title;
+		if ( isset( $stuff['deps'] ) ) {
+			foreach ( $stuff['deps'] as $dep ) {
+				$this->mOutput->addTemplate( $dep['title'], $dep['page_id'], $dep['rev_id'] );
+			}
+		}
+		return array($text,$finalTitle);
+	}
+
+	function fetchTemplate( $title ) {
+		$rv = $this->fetchTemplateAndtitle($title);
+		return $rv[0];
+	}
+
+	/**
+	 * Static function to get a template
+	 * Can be overridden via ParserOptions::setTemplateCallback().
+	 *
+	 * Returns an associative array:
+	 *    text          The unparsed template text
+	 *    finalTitle    (Optional) The title after following redirects
+	 *    deps          (Optional) An array of associative array dependencies:
+	 *                       title:    The dependency title, to be registered in templatelinks
+	 *                       page_id:  The page_id of the title
+	 *                       rev_id:   The revision ID loaded
+	 */
+	static function statelessFetchTemplate( $title ) {
+		$text = $skip = false;
+		$finalTitle = $title;
+		$deps = array();
+		
+		// Loop to fetch the article, with up to 1 redirect
+		for ( $i = 0; $i < 2 && is_object( $title ); $i++ ) {
+			# Give extensions a chance to select the revision instead
+			$id = false; // Assume current
+			wfRunHooks( 'BeforeParserFetchTemplateAndtitle', array( false, &$title, &$skip, &$id ) );
+			
+			if( $skip ) {
+				$text = false;
+				$deps[] = array(
+					'title' => $title,
+					'page_id' => $title->getArticleID(),
+					'rev_id' => null );
+				break;
+			}
+			$rev = $id ? Revision::newFromId( $id ) : Revision::newFromTitle( $title );
+			$rev_id = $rev ? $rev->getId() : 0;
+
+			$deps[] = array( 
+				'title' => $title, 
+				'page_id' => $title->getArticleID(), 
+				'rev_id' => $rev_id );
+
+			if( $rev ) {
+				$text = $rev->getText();
+			} elseif( $title->getNamespace() == NS_MEDIAWIKI ) {
+				global $wgLang;
+				$message = $wgLang->lcfirst( $title->getText() );
+				$text = wfMsgForContentNoTrans( $message );
+				if( wfEmptyMsg( $message, $text ) ) {
+					$text = false;
+					break;
+				}
+			} else {
+				break;
+			}
+			if ( $text === false ) {
+				break;
+			}
+			// Redirect?
+			$finalTitle = $title;
+			$title = Title::newFromRedirect( $text );
+		}
+		return array(
+			'text' => $text,
+			'finalTitle' => $finalTitle,
+			'deps' => $deps );
+	}
+
+	/**
+	 * Transclude an interwiki link.
+	 */
+	function interwikiTransclude( $title, $action ) {
+		global $wgEnableScaryTranscluding;
+
+		if (!$wgEnableScaryTranscluding)
+			return wfMsg('scarytranscludedisabled');
+
+		$url = $title->getFullUrl( "action=$action" );
+
+		if (strlen($url) > 255)
+			return wfMsg('scarytranscludetoolong');
+		return $this->fetchScaryTemplateMaybeFromCache($url);
+	}
+
+	function fetchScaryTemplateMaybeFromCache($url) {
+		global $wgTranscludeCacheExpiry;
+		$dbr = wfGetDB(DB_SLAVE);
+		$obj = $dbr->selectRow('transcache', array('tc_time', 'tc_contents'),
+				array('tc_url' => $url));
+		if ($obj) {
+			$time = $obj->tc_time;
+			$text = $obj->tc_contents;
+			if ($time && time() < $time + $wgTranscludeCacheExpiry ) {
+				return $text;
+			}
+		}
+
+		$text = Http::get($url);
+		if (!$text)
+			return wfMsg('scarytranscludefailed', $url);
+
+		$dbw = wfGetDB(DB_MASTER);
+		$dbw->replace('transcache', array('tc_url'), array(
+			'tc_url' => $url,
+			'tc_time' => time(),
+			'tc_contents' => $text));
+		return $text;
+	}
+
+
+	/**
+	 * Triple brace replacement -- used for template arguments
+	 * @private
+	 */
+	function argSubstitution( $matches ) {
+		$arg = trim( $matches['title'] );
+		$text = $matches['text'];
+		$inputArgs = end( $this->mArgStack );
+
+		if ( array_key_exists( $arg, $inputArgs ) ) {
+			$text = $inputArgs[$arg];
+		} else if (($this->mOutputType == self::OT_HTML || $this->mOutputType == self::OT_PREPROCESS ) &&
+		null != $matches['parts'] && count($matches['parts']) > 0) {
+			$text = $matches['parts'][0];
+		}
+		if ( !$this->incrementIncludeSize( 'arg', strlen( $text ) ) ) {
+			$text = $matches['text'] .
+				'<!-- WARNING: argument omitted, expansion size too large -->';
+		}
+
+		return $text;
+	}
+
+	/**
+	 * Increment an include size counter
+	 *
+	 * @param string $type The type of expansion
+	 * @param integer $size The size of the text
+	 * @return boolean False if this inclusion would take it over the maximum, true otherwise
+	 */
+	function incrementIncludeSize( $type, $size ) {
+		if ( $this->mIncludeSizes[$type] + $size > $this->mOptions->getMaxIncludeSize() ) {
+			return false;
+		} else {
+			$this->mIncludeSizes[$type] += $size;
+			return true;
+		}
+	}
+
+	/**
+	 * Detect __NOGALLERY__ magic word and set a placeholder
+	 */
+	function stripNoGallery( &$text ) {
+		# if the string __NOGALLERY__ (not case-sensitive) occurs in the HTML,
+		# do not add TOC
+		$mw = MagicWord::get( 'nogallery' );
+		$this->mOutput->mNoGallery = $mw->matchAndRemove( $text ) ;
+	}
+
+	/**
+	 * Find the first __TOC__ magic word and set a <!--MWTOC-->
+	 * placeholder that will then be replaced by the real TOC in
+	 * ->formatHeadings, this works because at this points real
+	 * comments will have already been discarded by the sanitizer.
+	 *
+	 * Any additional __TOC__ magic words left over will be discarded
+	 * as there can only be one TOC on the page.
+	 */
+	function stripToc( $text ) {
+		# if the string __NOTOC__ (not case-sensitive) occurs in the HTML,
+		# do not add TOC
+		$mw = MagicWord::get( 'notoc' );
+		if( $mw->matchAndRemove( $text ) ) {
+			$this->mShowToc = false;
+		}
+
+		$mw = MagicWord::get( 'toc' );
+		if( $mw->match( $text ) ) {
+			$this->mShowToc = true;
+			$this->mForceTocPosition = true;
+
+			// Set a placeholder. At the end we'll fill it in with the TOC.
+			$text = $mw->replace( '<!--MWTOC-->', $text, 1 );
+
+			// Only keep the first one.
+			$text = $mw->replace( '', $text );
+		}
+		return $text;
+	}
+
+	/**
+	 * This function accomplishes several tasks:
+	 * 1) Auto-number headings if that option is enabled
+	 * 2) Add an [edit] link to sections for users who have enabled the option and can edit the page
+	 * 3) Add a Table of contents on the top for users who have enabled the option
+	 * 4) Auto-anchor headings
+	 *
+	 * It loops through all headlines, collects the necessary data, then splits up the
+	 * string and re-inserts the newly formatted headlines.
+	 *
+	 * @param string $text
+	 * @param boolean $isMain
+	 * @private
+	 */
+	function formatHeadings( $text, $isMain=true ) {
+		global $wgMaxTocLevel, $wgContLang;
+
+		$doNumberHeadings = $this->mOptions->getNumberHeadings();
+		if( !$this->mTitle->quickUserCan( 'edit' ) ) {
+			$showEditLink = 0;
+		} else {
+			$showEditLink = $this->mOptions->getEditSection();
+		}
+
+		# Inhibit editsection links if requested in the page
+		$esw =& MagicWord::get( 'noeditsection' );
+		if( $esw->matchAndRemove( $text ) ) {
+			$showEditLink = 0;
+		}
+
+		# Get all headlines for numbering them and adding funky stuff like [edit]
+		# links - this is for later, but we need the number of headlines right now
+		$matches = array();
+		$numMatches = preg_match_all( '/<H(?P<level>[1-6])(?P<attrib>.*?'.'>)(?P<header>.*?)<\/H[1-6] *>/i', $text, $matches );
+
+		# if there are fewer than 4 headlines in the article, do not show TOC
+		# unless it's been explicitly enabled.
+		$enoughToc = $this->mShowToc &&
+			(($numMatches >= 4) || $this->mForceTocPosition);
+
+		# Allow user to stipulate that a page should have a "new section"
+		# link added via __NEWSECTIONLINK__
+		$mw =& MagicWord::get( 'newsectionlink' );
+		if( $mw->matchAndRemove( $text ) )
+			$this->mOutput->setNewSection( true );
+
+		# if the string __FORCETOC__ (not case-sensitive) occurs in the HTML,
+		# override above conditions and always show TOC above first header
+		$mw =& MagicWord::get( 'forcetoc' );
+		if ($mw->matchAndRemove( $text ) ) {
+			$this->mShowToc = true;
+			$enoughToc = true;
+		}
+
+		# We need this to perform operations on the HTML
+		$sk = $this->mOptions->getSkin();
+
+		# headline counter
+		$headlineCount = 0;
+		$sectionCount = 0; # headlineCount excluding template sections
+		$numVisible = 0;
+
+		# Ugh .. the TOC should have neat indentation levels which can be
+		# passed to the skin functions. These are determined here
+		$toc = '';
+		$full = '';
+		$head = array();
+		$sublevelCount = array();
+		$levelCount = array();
+		$toclevel = 0;
+		$level = 0;
+		$prevlevel = 0;
+		$toclevel = 0;
+		$prevtoclevel = 0;
+		$tocraw = array();
+
+		foreach( $matches[3] as $headline ) {
+			$istemplate = 0;
+			$templatetitle = '';
+			$templatesection = 0;
+			$numbering = '';
+			$mat = array();
+			if (preg_match("/<!--MWTEMPLATESECTION=([^&]+)&([^_]+)-->/", $headline, $mat)) {
+				$istemplate = 1;
+				$templatetitle = base64_decode($mat[1]);
+				$templatesection = 1 + (int)base64_decode($mat[2]);
+				$headline = preg_replace("/<!--MWTEMPLATESECTION=([^&]+)&([^_]+)-->/", "", $headline);
+			}
+
+			if( $toclevel ) {
+				$prevlevel = $level;
+				$prevtoclevel = $toclevel;
+			}
+			$level = $matches[1][$headlineCount];
+
+			if( $doNumberHeadings || $enoughToc ) {
+
+				if ( $level > $prevlevel ) {
+					# Increase TOC level
+					$toclevel++;
+					$sublevelCount[$toclevel] = 0;
+					if( $toclevel<$wgMaxTocLevel ) {
+						$prevtoclevel = $toclevel;
+						$toc .= $sk->tocIndent();
+						$numVisible++;
+					}
+				}
+				elseif ( $level < $prevlevel && $toclevel > 1 ) {
+					# Decrease TOC level, find level to jump to
+
+					if ( $toclevel == 2 && $level <= $levelCount[1] ) {
+						# Can only go down to level 1
+						$toclevel = 1;
+					} else {
+						for ($i = $toclevel; $i > 0; $i--) {
+							if ( $levelCount[$i] == $level ) {
+								# Found last matching level
+								$toclevel = $i;
+								break;
+							}
+							elseif ( $levelCount[$i] < $level ) {
+								# Found first matching level below current level
+								$toclevel = $i + 1;
+								break;
+							}
+						}
+					}
+					if( $toclevel<$wgMaxTocLevel ) {
+						if($prevtoclevel < $wgMaxTocLevel) {
+							# Unindent only if the previous toc level was shown :p
+							$toc .= $sk->tocUnindent( $prevtoclevel - $toclevel );
+						} else {
+							$toc .= $sk->tocLineEnd();
+						}
+					}
+				}
+				else {
+					# No change in level, end TOC line
+					if( $toclevel<$wgMaxTocLevel ) {
+						$toc .= $sk->tocLineEnd();
+					}
+				}
+
+				$levelCount[$toclevel] = $level;
+
+				# count number of headlines for each level
+				@$sublevelCount[$toclevel]++;
+				$dot = 0;
+				for( $i = 1; $i <= $toclevel; $i++ ) {
+					if( !empty( $sublevelCount[$i] ) ) {
+						if( $dot ) {
+							$numbering .= '.';
+						}
+						$numbering .= $wgContLang->formatNum( $sublevelCount[$i] );
+						$dot = 1;
+					}
+				}
+			}
+
+			# The canonized header is a version of the header text safe to use for links
+			# Avoid insertion of weird stuff like <math> by expanding the relevant sections
+			$canonized_headline = $this->mStripState->unstripBoth( $headline );
+
+			# Remove link placeholders by the link text.
+			#     <!--LINK number-->
+			# turns into
+			#     link text with suffix
+			$canonized_headline = preg_replace( '/<!--LINK ([0-9]*)-->/e',
+							    "\$this->mLinkHolders['texts'][\$1]",
+							    $canonized_headline );
+			$canonized_headline = preg_replace( '/<!--IWLINK ([0-9]*)-->/e',
+							    "\$this->mInterwikiLinkHolders['texts'][\$1]",
+							    $canonized_headline );
+
+			# Strip out HTML (other than plain <sup> and <sub>: bug 8393)
+			$tocline = preg_replace(
+				array( '#<(?!/?(sup|sub)).*?'.'>#', '#<(/?(sup|sub)).*?'.'>#' ),
+				array( '',                          '<$1>'),
+				$canonized_headline
+			);
+			$tocline = trim( $tocline );
+
+			# For the anchor, strip out HTML-y stuff period
+			$canonized_headline = preg_replace( '/<.*?'.'>/', '', $canonized_headline );
+			$canonized_headline = trim( $canonized_headline );
+
+			# Save headline for section edit hint before it's escaped
+			$headline_hint = $canonized_headline;
+			$canonized_headline = Sanitizer::escapeId( $canonized_headline );
+			$refers[$headlineCount] = $canonized_headline;
+
+			# count how many in assoc. array so we can track dupes in anchors
+			isset( $refers[$canonized_headline] ) ? $refers[$canonized_headline]++ : $refers[$canonized_headline] = 1;
+			$refcount[$headlineCount]=$refers[$canonized_headline];
+
+			# Don't number the heading if it is the only one (looks silly)
+			if( $doNumberHeadings && count( $matches[3] ) > 1) {
+				# the two are different if the line contains a link
+				$headline=$numbering . ' ' . $headline;
+			}
+
+			# Create the anchor for linking from the TOC to the section
+			$anchor = $canonized_headline;
+			if($refcount[$headlineCount] > 1 ) {
+				$anchor .= '_' . $refcount[$headlineCount];
+			}
+			if( $enoughToc && ( !isset($wgMaxTocLevel) || $toclevel<$wgMaxTocLevel ) ) {
+				$toc .= $sk->tocLine($anchor, $tocline, $numbering, $toclevel);
+				$tocraw[] = array( 'toclevel' => $toclevel, 'level' => $level, 'line' => $tocline, 'number' => $numbering );
+			}
+			# give headline the correct <h#> tag
+			if( $showEditLink && ( !$istemplate || $templatetitle !== "" ) ) {
+				if( $istemplate )
+					$editlink = $sk->editSectionLinkForOther($templatetitle, $templatesection);
+				else
+					$editlink = $sk->editSectionLink($this->mTitle, $sectionCount+1, $headline_hint);
+			} else {
+				$editlink = '';
+			}
+			$head[$headlineCount] = $sk->makeHeadline( $level, $matches['attrib'][$headlineCount], $anchor, $headline, $editlink );
+
+			$headlineCount++;
+			if( !$istemplate )
+				$sectionCount++;
+		}
+
+		$this->mOutput->setSections( $tocraw );
+
+		# Never ever show TOC if no headers
+		if( $numVisible < 1 ) {
+			$enoughToc = false;
+		}
+		
+		if( $enoughToc ) {
+			if( $prevtoclevel > 0 && $prevtoclevel < $wgMaxTocLevel ) {
+				$toc .= $sk->tocUnindent( $prevtoclevel - 1 );
+			}
+			$toc = $sk->tocList( $toc );
+		}
+
+		# split up and insert constructed headlines
+
+		$blocks = preg_split( '/<H[1-6].*?' . '>.*?<\/H[1-6]>/i', $text );
+		$i = 0;
+
+		foreach( $blocks as $block ) {
+			if( $showEditLink && $headlineCount > 0 && $i == 0 && $block != "\n" ) {
+				# This is the [edit] link that appears for the top block of text when
+				# section editing is enabled
+
+				# Disabled because it broke block formatting
+				# For example, a bullet point in the top line
+				# $full .= $sk->editSectionLink(0);
+			}
+			$full .= $block;
+			if( $enoughToc && !$i && $isMain && !$this->mForceTocPosition ) {
+				# Top anchor now in skin
+				$full = $full.$toc;
+			}
+
+			if( !empty( $head[$i] ) ) {
+				$full .= $head[$i];
+			}
+			$i++;
+		}
+		if( $this->mForceTocPosition ) {
+			return str_replace( '<!--MWTOC-->', $toc, $full );
+		} else {
+			return $full;
+		}
+	}
+
+	/**
+	 * Transform wiki markup when saving a page by doing \r\n -> \n
+	 * conversion, substitting signatures, {{subst:}} templates, etc.
+	 *
+	 * @param string $text the text to transform
+	 * @param Title &$title the Title object for the current article
+	 * @param User &$user the User object describing the current user
+	 * @param ParserOptions $options parsing options
+	 * @param bool $clearState whether to clear the parser state first
+	 * @return string the altered wiki markup
+	 * @public
+	 */
+	function preSaveTransform( $text, &$title, $user, $options, $clearState = true ) {
+		$this->mOptions = $options;
+		$this->mTitle =& $title;
+		$this->setOutputType( self::OT_WIKI );
+
+		if ( $clearState ) {
+			$this->clearState();
+		}
+
+		$stripState = new StripState;
+		$pairs = array(
+			"\r\n" => "\n",
+		);
+		$text = str_replace( array_keys( $pairs ), array_values( $pairs ), $text );
+		$text = $this->strip( $text, $stripState, true, array( 'gallery' ) );
+		$text = $this->pstPass2( $text, $stripState, $user );
+		$text = $stripState->unstripBoth( $text );
+		return $text;
+	}
+
+	/**
+	 * Pre-save transform helper function
+	 * @private
+	 */
+	function pstPass2( $text, &$stripState, $user ) {
+		global $wgContLang, $wgLocaltimezone;
+
+		/* Note: This is the timestamp saved as hardcoded wikitext to
+		 * the database, we use $wgContLang here in order to give
+		 * everyone the same signature and use the default one rather
+		 * than the one selected in each user's preferences.
+		 */
+		if ( isset( $wgLocaltimezone ) ) {
+			$oldtz = getenv( 'TZ' );
+			putenv( 'TZ='.$wgLocaltimezone );
+		}
+		$d = $wgContLang->timeanddate( date( 'YmdHis' ), false, false) .
+		  ' (' . date( 'T' ) . ')';
+		if ( isset( $wgLocaltimezone ) ) {
+			putenv( 'TZ='.$oldtz );
+		}
+
+		# Variable replacement
+		# Because mOutputType is OT_WIKI, this will only process {{subst:xxx}} type tags
+		$text = $this->replaceVariables( $text );
+
+		# Strip out <nowiki> etc. added via replaceVariables
+		$text = $this->strip( $text, $stripState, false, array( 'gallery' ) );
+
+		# Signatures
+		$sigText = $this->getUserSig( $user );
+		$text = strtr( $text, array(
+			'~~~~~' => $d,
+			'~~~~' => "$sigText $d",
+			'~~~' => $sigText
+		) );
+
+		# Context links: [[|name]] and [[name (context)|]]
+		#
+		global $wgLegalTitleChars;
+		$tc = "[$wgLegalTitleChars]";
+		$nc = '[ _0-9A-Za-z\x80-\xff]'; # Namespaces can use non-ascii!
+
+		$p1 = "/\[\[(:?$nc+:|:|)($tc+?)( \\($tc+\\))\\|]]/";		# [[ns:page (context)|]]
+		$p3 = "/\[\[(:?$nc+:|:|)($tc+?)( \\($tc+\\)|)(, $tc+|)\\|]]/";	# [[ns:page (context), context|]]
+		$p2 = "/\[\[\\|($tc+)]]/";					# [[|page]]
+
+		# try $p1 first, to turn "[[A, B (C)|]]" into "[[A, B (C)|A, B]]"
+		$text = preg_replace( $p1, '[[\\1\\2\\3|\\2]]', $text );
+		$text = preg_replace( $p3, '[[\\1\\2\\3\\4|\\2]]', $text );
+
+		$t = $this->mTitle->getText();
+		$m = array();
+		if ( preg_match( "/^($nc+:|)$tc+?( \\($tc+\\))$/", $t, $m ) ) {
+			$text = preg_replace( $p2, "[[$m[1]\\1$m[2]|\\1]]", $text );
+		} elseif ( preg_match( "/^($nc+:|)$tc+?(, $tc+|)$/", $t, $m ) && '' != "$m[1]$m[2]" ) {
+			$text = preg_replace( $p2, "[[$m[1]\\1$m[2]|\\1]]", $text );
+		} else {
+			# if there's no context, don't bother duplicating the title
+			$text = preg_replace( $p2, '[[\\1]]', $text );
+		}
+
+		# Trim trailing whitespace
+		$text = rtrim( $text );
+
+		return $text;
+	}
+
+	/**
+	 * Fetch the user's signature text, if any, and normalize to
+	 * validated, ready-to-insert wikitext.
+	 *
+	 * @param User $user
+	 * @return string
+	 * @private
+	 */
+	function getUserSig( &$user ) {
+		global $wgMaxSigChars;
+
+		$username = $user->getName();
+		$nickname = $user->getOption( 'nickname' );
+		$nickname = $nickname === '' ? $username : $nickname;
+		
+		if( mb_strlen( $nickname ) > $wgMaxSigChars ) {
+			$nickname = $username;
+			wfDebug( __METHOD__ . ": $username has overlong signature.\n" );
+		} elseif( $user->getBoolOption( 'fancysig' ) !== false ) {
+			# Sig. might contain markup; validate this
+			if( $this->validateSig( $nickname ) !== false ) {
+				# Validated; clean up (if needed) and return it
+				return $this->cleanSig( $nickname, true );
+			} else {
+				# Failed to validate; fall back to the default
+				$nickname = $username;
+				wfDebug( "Parser::getUserSig: $username has bad XML tags in signature.\n" );
+			}
+		}
+
+		// Make sure nickname doesnt get a sig in a sig
+		$nickname = $this->cleanSigInSig( $nickname );
+
+		# If we're still here, make it a link to the user page
+		$userText = wfEscapeWikiText( $username );
+		$nickText = wfEscapeWikiText( $nickname );
+		if ( $user->isAnon() )  {
+			return wfMsgExt( 'signature-anon', array( 'content', 'parsemag' ), $userText, $nickText );
+		} else {
+			return wfMsgExt( 'signature', array( 'content', 'parsemag' ), $userText, $nickText );
+		}
+	}
+
+	/**
+	 * Check that the user's signature contains no bad XML
+	 *
+	 * @param string $text
+	 * @return mixed An expanded string, or false if invalid.
+	 */
+	function validateSig( $text ) {
+		return( wfIsWellFormedXmlFragment( $text ) ? $text : false );
+	}
+
+	/**
+	 * Clean up signature text
+	 *
+	 * 1) Strip ~~~, ~~~~ and ~~~~~ out of signatures @see cleanSigInSig
+	 * 2) Substitute all transclusions
+	 *
+	 * @param string $text
+	 * @param $parsing Whether we're cleaning (preferences save) or parsing
+	 * @return string Signature text
+	 */
+	function cleanSig( $text, $parsing = false ) {
+		global $wgTitle;
+		$this->startExternalParse( $this->mTitle, new ParserOptions(), $parsing ? self::OT_WIKI : self::OT_MSG );
+
+		$substWord = MagicWord::get( 'subst' );
+		$substRegex = '/\{\{(?!(?:' . $substWord->getBaseRegex() . '))/x' . $substWord->getRegexCase();
+		$substText = '{{' . $substWord->getSynonym( 0 );
+
+		$text = preg_replace( $substRegex, $substText, $text );
+		$text = $this->cleanSigInSig( $text );
+		$text = $this->replaceVariables( $text );
+
+		$this->clearState();
+		return $text;
+	}
+
+	/**
+	 * Strip ~~~, ~~~~ and ~~~~~ out of signatures
+	 * @param string $text
+	 * @return string Signature text with /~{3,5}/ removed
+	 */
+	function cleanSigInSig( $text ) {
+		$text = preg_replace( '/~{3,5}/', '', $text );
+		return $text;
+	}
+
+	/**
+	 * Set up some variables which are usually set up in parse()
+	 * so that an external function can call some class members with confidence
+	 * @public
+	 */
+	function startExternalParse( &$title, $options, $outputType, $clearState = true ) {
+		$this->mTitle =& $title;
+		$this->mOptions = $options;
+		$this->setOutputType( $outputType );
+		if ( $clearState ) {
+			$this->clearState();
+		}
+	}
+
+	/**
+	 * Transform a MediaWiki message by replacing magic variables.
+	 *
+	 * @param string $text the text to transform
+	 * @param ParserOptions $options  options
+	 * @return string the text with variables substituted
+	 * @public
+	 */
+	function transformMsg( $text, $options ) {
+		global $wgTitle;
+		static $executing = false;
+
+		$fname = "Parser::transformMsg";
+
+		# Guard against infinite recursion
+		if ( $executing ) {
+			return $text;
+		}
+		$executing = true;
+
+		wfProfileIn($fname);
+
+		if ( $wgTitle && !( $wgTitle instanceof FakeTitle ) ) {
+			$this->mTitle = $wgTitle;
+		} else {
+			$this->mTitle = Title::newFromText('msg');
+		}
+		$this->mOptions = $options;
+		$this->setOutputType( self::OT_MSG );
+		$this->clearState();
+		$text = $this->replaceVariables( $text );
+
+		$executing = false;
+		wfProfileOut($fname);
+		return $text;
+	}
+
+	/**
+	 * Create an HTML-style tag, e.g. <yourtag>special text</yourtag>
+	 * The callback should have the following form:
+	 *    function myParserHook( $text, $params, &$parser ) { ... }
+	 *
+	 * Transform and return $text. Use $parser for any required context, e.g. use
+	 * $parser->getTitle() and $parser->getOptions() not $wgTitle or $wgOut->mParserOptions
+	 *
+	 * @public
+	 *
+	 * @param mixed $tag The tag to use, e.g. 'hook' for <hook>
+	 * @param mixed $callback The callback function (and object) to use for the tag
+	 *
+	 * @return The old value of the mTagHooks array associated with the hook
+	 */
+	function setHook( $tag, $callback ) {
+		$tag = strtolower( $tag );
+		$oldVal = isset( $this->mTagHooks[$tag] ) ? $this->mTagHooks[$tag] : null;
+		$this->mTagHooks[$tag] = $callback;
+
+		return $oldVal;
+	}
+
+	function setTransparentTagHook( $tag, $callback ) {
+		$tag = strtolower( $tag );
+		$oldVal = isset( $this->mTransparentTagHooks[$tag] ) ? $this->mTransparentTagHooks[$tag] : null;
+		$this->mTransparentTagHooks[$tag] = $callback;
+
+		return $oldVal;
+	}
+
+	/**
+	 * Create a function, e.g. {{sum:1|2|3}}
+	 * The callback function should have the form:
+	 *    function myParserFunction( &$parser, $arg1, $arg2, $arg3 ) { ... }
+	 *
+	 * The callback may either return the text result of the function, or an array with the text
+	 * in element 0, and a number of flags in the other elements. The names of the flags are
+	 * specified in the keys. Valid flags are:
+	 *   found                     The text returned is valid, stop processing the template. This
+	 *                             is on by default.
+	 *   nowiki                    Wiki markup in the return value should be escaped
+	 *   noparse                   Unsafe HTML tags should not be stripped, etc.
+	 *   noargs                    Don't replace triple-brace arguments in the return value
+	 *   isHTML                    The returned text is HTML, armour it against wikitext transformation
+	 *
+	 * @public
+	 *
+	 * @param string $id The magic word ID
+	 * @param mixed $callback The callback function (and object) to use
+	 * @param integer $flags a combination of the following flags:
+	 *                SFH_NO_HASH No leading hash, i.e. {{plural:...}} instead of {{#if:...}}
+	 *
+	 * @return The old callback function for this name, if any
+	 */
+	function setFunctionHook( $id, $callback, $flags = 0 ) {
+		$oldVal = isset( $this->mFunctionHooks[$id] ) ? $this->mFunctionHooks[$id] : null;
+		$this->mFunctionHooks[$id] = $callback;
+
+		# Add to function cache
+		$mw = MagicWord::get( $id );
+		if( !$mw )
+			throw new MWException( 'Parser::setFunctionHook() expecting a magic word identifier.' );
+
+		$synonyms = $mw->getSynonyms();
+		$sensitive = intval( $mw->isCaseSensitive() );
+
+		foreach ( $synonyms as $syn ) {
+			# Case
+			if ( !$sensitive ) {
+				$syn = strtolower( $syn );
+			}
+			# Add leading hash
+			if ( !( $flags & SFH_NO_HASH ) ) {
+				$syn = '#' . $syn;
+			}
+			# Remove trailing colon
+			if ( substr( $syn, -1, 1 ) == ':' ) {
+				$syn = substr( $syn, 0, -1 );
+			}
+			$this->mFunctionSynonyms[$sensitive][$syn] = $id;
+		}
+		return $oldVal;
+	}
+
+	/**
+	 * Get all registered function hook identifiers
+	 *
+	 * @return array
+	 */
+	function getFunctionHooks() {
+		return array_keys( $this->mFunctionHooks );
+	}
+
+	/**
+	 * Replace <!--LINK--> link placeholders with actual links, in the buffer
+	 * Placeholders created in Skin::makeLinkObj()
+	 * Returns an array of links found, indexed by PDBK:
+	 *  0 - broken
+	 *  1 - normal link
+	 *  2 - stub
+	 * $options is a bit field, RLH_FOR_UPDATE to select for update
+	 */
+	function replaceLinkHolders( &$text, $options = 0 ) {
+		global $wgUser;
+		global $wgContLang;
+
+		$fname = 'Parser::replaceLinkHolders';
+		wfProfileIn( $fname );
+
+		$pdbks = array();
+		$colours = array();
+		$sk = $this->mOptions->getSkin();
+		$linkCache =& LinkCache::singleton();
+
+		if ( !empty( $this->mLinkHolders['namespaces'] ) ) {
+			wfProfileIn( $fname.'-check' );
+			$dbr = wfGetDB( DB_SLAVE );
+			$page = $dbr->tableName( 'page' );
+			$threshold = $wgUser->getOption('stubthreshold');
+
+			# Sort by namespace
+			asort( $this->mLinkHolders['namespaces'] );
+
+			# Generate query
+			$query = false;
+			$current = null;
+			foreach ( $this->mLinkHolders['namespaces'] as $key => $ns ) {
+				# Make title object
+				$title = $this->mLinkHolders['titles'][$key];
+
+				# Skip invalid entries.
+				# Result will be ugly, but prevents crash.
+				if ( is_null( $title ) ) {
+					continue;
+				}
+				$pdbk = $pdbks[$key] = $title->getPrefixedDBkey();
+
+				# Check if it's a static known link, e.g. interwiki
+				if ( $title->isAlwaysKnown() ) {
+					$colours[$pdbk] = 1;
+				} elseif ( ( $id = $linkCache->getGoodLinkID( $pdbk ) ) != 0 ) {
+					$colours[$pdbk] = 1;
+					$this->mOutput->addLink( $title, $id );
+				} elseif ( $linkCache->isBadLink( $pdbk ) ) {
+					$colours[$pdbk] = 0;
+				} elseif ( $title->getNamespace() == NS_SPECIAL && !SpecialPage::exists( $pdbk ) ) {
+					$colours[$pdbk] = 0;
+				} else {
+					# Not in the link cache, add it to the query
+					if ( !isset( $current ) ) {
+						$current = $ns;
+						$query =  "SELECT page_id, page_namespace, page_title";
+						if ( $threshold > 0 ) {
+							$query .= ', page_len, page_is_redirect';
+						}
+						$query .= " FROM $page WHERE (page_namespace=$ns AND page_title IN(";
+					} elseif ( $current != $ns ) {
+						$current = $ns;
+						$query .= ")) OR (page_namespace=$ns AND page_title IN(";
+					} else {
+						$query .= ', ';
+					}
+
+					$query .= $dbr->addQuotes( $this->mLinkHolders['dbkeys'][$key] );
+				}
+			}
+			if ( $query ) {
+				$query .= '))';
+				if ( $options & RLH_FOR_UPDATE ) {
+					$query .= ' FOR UPDATE';
+				}
+
+				$res = $dbr->query( $query, $fname );
+
+				# Fetch data and form into an associative array
+				# non-existent = broken
+				# 1 = known
+				# 2 = stub
+				while ( $s = $dbr->fetchObject($res) ) {
+					$title = Title::makeTitle( $s->page_namespace, $s->page_title );
+					$pdbk = $title->getPrefixedDBkey();
+					$linkCache->addGoodLinkObj( $s->page_id, $title );
+					$this->mOutput->addLink( $title, $s->page_id );
+
+					$colours[$pdbk] = ( $threshold == 0 || (
+								$s->page_len >= $threshold || # always true if $threshold <= 0
+							        $s->page_is_redirect ||
+							        !Namespace::isContent( $s->page_namespace ) )
+							    ? 1 : 2 );
+				}
+			}
+			wfProfileOut( $fname.'-check' );
+
+			# Do a second query for different language variants of links and categories
+			if($wgContLang->hasVariants()){
+				$linkBatch = new LinkBatch();
+				$variantMap = array(); // maps $pdbkey_Variant => $keys (of link holders)
+				$categoryMap = array(); // maps $category_variant => $category (dbkeys)
+				$varCategories = array(); // category replacements oldDBkey => newDBkey
+
+				$categories = $this->mOutput->getCategoryLinks();
+
+				// Add variants of links to link batch
+				foreach ( $this->mLinkHolders['namespaces'] as $key => $ns ) {
+					$title = $this->mLinkHolders['titles'][$key];
+					if ( is_null( $title ) )
+						continue;
+
+					$pdbk = $title->getPrefixedDBkey();
+					$titleText = $title->getText();
+
+					// generate all variants of the link title text
+					$allTextVariants = $wgContLang->convertLinkToAllVariants($titleText);
+
+					// if link was not found (in first query), add all variants to query
+					if ( !isset($colours[$pdbk]) ){
+						foreach($allTextVariants as $textVariant){
+							if($textVariant != $titleText){
+								$variantTitle = Title::makeTitle( $ns, $textVariant );
+								if(is_null($variantTitle)) continue;
+								$linkBatch->addObj( $variantTitle );
+								$variantMap[$variantTitle->getPrefixedDBkey()][] = $key;
+							}
+						}
+					}
+				}
+
+				// process categories, check if a category exists in some variant
+				foreach( $categories as $category ){
+					$variants = $wgContLang->convertLinkToAllVariants($category);
+					foreach($variants as $variant){
+						if($variant != $category){
+							$variantTitle = Title::newFromDBkey( Title::makeName(NS_CATEGORY,$variant) );
+							if(is_null($variantTitle)) continue;
+							$linkBatch->addObj( $variantTitle );
+							$categoryMap[$variant] = $category;
+						}
+					}
+				}
+
+
+				if(!$linkBatch->isEmpty()){
+					// construct query
+					$titleClause = $linkBatch->constructSet('page', $dbr);
+
+					$variantQuery =  "SELECT page_id, page_namespace, page_title";
+					if ( $threshold > 0 ) {
+						$variantQuery .= ', page_len, page_is_redirect';
+					}
+
+					$variantQuery .= " FROM $page WHERE $titleClause";
+					if ( $options & RLH_FOR_UPDATE ) {
+						$variantQuery .= ' FOR UPDATE';
+					}
+
+					$varRes = $dbr->query( $variantQuery, $fname );
+
+					// for each found variants, figure out link holders and replace
+					while ( $s = $dbr->fetchObject($varRes) ) {
+
+						$variantTitle = Title::makeTitle( $s->page_namespace, $s->page_title );
+						$varPdbk = $variantTitle->getPrefixedDBkey();
+						$vardbk = $variantTitle->getDBkey();
+
+						$holderKeys = array();
+						if(isset($variantMap[$varPdbk])){
+							$holderKeys = $variantMap[$varPdbk];
+							$linkCache->addGoodLinkObj( $s->page_id, $variantTitle );
+							$this->mOutput->addLink( $variantTitle, $s->page_id );
+						}
+
+						// loop over link holders
+						foreach($holderKeys as $key){
+							$title = $this->mLinkHolders['titles'][$key];
+							if ( is_null( $title ) ) continue;
+
+							$pdbk = $title->getPrefixedDBkey();
+
+							if(!isset($colours[$pdbk])){
+								// found link in some of the variants, replace the link holder data
+								$this->mLinkHolders['titles'][$key] = $variantTitle;
+								$this->mLinkHolders['dbkeys'][$key] = $variantTitle->getDBkey();
+
+								// set pdbk and colour
+								$pdbks[$key] = $varPdbk;
+								if ( $threshold >  0 ) {
+									$size = $s->page_len;
+									if ( $s->page_is_redirect || $s->page_namespace != 0 || $size >= $threshold ) {
+										$colours[$varPdbk] = 1;
+									} else {
+										$colours[$varPdbk] = 2;
+									}
+								}
+								else {
+									$colours[$varPdbk] = 1;
+								}
+							}
+						}
+
+						// check if the object is a variant of a category
+						if(isset($categoryMap[$vardbk])){
+							$oldkey = $categoryMap[$vardbk];
+							if($oldkey != $vardbk)
+								$varCategories[$oldkey]=$vardbk;
+						}
+					}
+
+					// rebuild the categories in original order (if there are replacements)
+					if(count($varCategories)>0){
+						$newCats = array();
+						$originalCats = $this->mOutput->getCategories();
+						foreach($originalCats as $cat => $sortkey){
+							// make the replacement
+							if( array_key_exists($cat,$varCategories) )
+								$newCats[$varCategories[$cat]] = $sortkey;
+							else $newCats[$cat] = $sortkey;
+						}
+						$this->mOutput->setCategoryLinks($newCats);
+					}
+				}
+			}
+
+			# Construct search and replace arrays
+			wfProfileIn( $fname.'-construct' );
+			$replacePairs = array();
+			foreach ( $this->mLinkHolders['namespaces'] as $key => $ns ) {
+				$pdbk = $pdbks[$key];
+				$searchkey = "<!--LINK $key-->";
+				$title = $this->mLinkHolders['titles'][$key];
+				if ( empty( $colours[$pdbk] ) ) {
+					$linkCache->addBadLinkObj( $title );
+					$colours[$pdbk] = 0;
+					$this->mOutput->addLink( $title, 0 );
+					$replacePairs[$searchkey] = $sk->makeBrokenLinkObj( $title,
+									$this->mLinkHolders['texts'][$key],
+									$this->mLinkHolders['queries'][$key] );
+				} elseif ( $colours[$pdbk] == 1 ) {
+					$replacePairs[$searchkey] = $sk->makeKnownLinkObj( $title,
+									$this->mLinkHolders['texts'][$key],
+									$this->mLinkHolders['queries'][$key] );
+				} elseif ( $colours[$pdbk] == 2 ) {
+					$replacePairs[$searchkey] = $sk->makeStubLinkObj( $title,
+									$this->mLinkHolders['texts'][$key],
+									$this->mLinkHolders['queries'][$key] );
+				}
+			}
+			$replacer = new HashtableReplacer( $replacePairs, 1 );
+			wfProfileOut( $fname.'-construct' );
+
+			# Do the thing
+			wfProfileIn( $fname.'-replace' );
+			$text = preg_replace_callback(
+				'/(<!--LINK .*?-->)/',
+				$replacer->cb(),
+				$text);
+
+			wfProfileOut( $fname.'-replace' );
+		}
+
+		# Now process interwiki link holders
+		# This is quite a bit simpler than internal links
+		if ( !empty( $this->mInterwikiLinkHolders['texts'] ) ) {
+			wfProfileIn( $fname.'-interwiki' );
+			# Make interwiki link HTML
+			$replacePairs = array();
+			foreach( $this->mInterwikiLinkHolders['texts'] as $key => $link ) {
+				$title = $this->mInterwikiLinkHolders['titles'][$key];
+				$replacePairs[$key] = $sk->makeLinkObj( $title, $link );
+			}
+			$replacer = new HashtableReplacer( $replacePairs, 1 );
+
+			$text = preg_replace_callback(
+				'/<!--IWLINK (.*?)-->/',
+				$replacer->cb(),
+				$text );
+			wfProfileOut( $fname.'-interwiki' );
+		}
+
+		wfProfileOut( $fname );
+		return $colours;
+	}
+
+	/**
+	 * Replace <!--LINK--> link placeholders with plain text of links
+	 * (not HTML-formatted).
+	 * @param string $text
+	 * @return string
+	 */
+	function replaceLinkHoldersText( $text ) {
+		$fname = 'Parser::replaceLinkHoldersText';
+		wfProfileIn( $fname );
+
+		$text = preg_replace_callback(
+			'/<!--(LINK|IWLINK) (.*?)-->/',
+			array( &$this, 'replaceLinkHoldersTextCallback' ),
+			$text );
+
+		wfProfileOut( $fname );
+		return $text;
+	}
+
+	/**
+	 * @param array $matches
+	 * @return string
+	 * @private
+	 */
+	function replaceLinkHoldersTextCallback( $matches ) {
+		$type = $matches[1];
+		$key  = $matches[2];
+		if( $type == 'LINK' ) {
+			if( isset( $this->mLinkHolders['texts'][$key] ) ) {
+				return $this->mLinkHolders['texts'][$key];
+			}
+		} elseif( $type == 'IWLINK' ) {
+			if( isset( $this->mInterwikiLinkHolders['texts'][$key] ) ) {
+				return $this->mInterwikiLinkHolders['texts'][$key];
+			}
+		}
+		return $matches[0];
+	}
+
+	/**
+	 * Tag hook handler for 'pre'.
+	 */
+	function renderPreTag( $text, $attribs ) {
+		// Backwards-compatibility hack
+		$content = StringUtils::delimiterReplace( '<nowiki>', '</nowiki>', '$1', $text, 'i' );
+
+		$attribs = Sanitizer::validateTagAttributes( $attribs, 'pre' );
+		return wfOpenElement( 'pre', $attribs ) .
+			Xml::escapeTagsOnly( $content ) .
+			'</pre>';
+	}
+
+	/**
+	 * Renders an image gallery from a text with one line per image.
+	 * text labels may be given by using |-style alternative text. E.g.
+	 *   Image:one.jpg|The number "1"
+	 *   Image:tree.jpg|A tree
+	 * given as text will return the HTML of a gallery with two images,
+	 * labeled 'The number "1"' and
+	 * 'A tree'.
+	 */
+	function renderImageGallery( $text, $params ) {
+		$ig = new ImageGallery();
+		$ig->setContextTitle( $this->mTitle );
+		$ig->setShowBytes( false );
+		$ig->setShowFilename( false );
+		$ig->setParser( $this );
+		$ig->setHideBadImages();
+		$ig->setAttributes( Sanitizer::validateTagAttributes( $params, 'table' ) );
+		$ig->useSkin( $this->mOptions->getSkin() );
+		$ig->mRevisionId = $this->mRevisionId;
+
+		if( isset( $params['caption'] ) ) {
+			$caption = $params['caption'];
+			$caption = htmlspecialchars( $caption );
+			$caption = $this->replaceInternalLinks( $caption );
+			$ig->setCaptionHtml( $caption );
+		}
+		if( isset( $params['perrow'] ) ) {
+			$ig->setPerRow( $params['perrow'] );
+		}
+		if( isset( $params['widths'] ) ) {
+			$ig->setWidths( $params['widths'] );
+		}
+		if( isset( $params['heights'] ) ) {
+			$ig->setHeights( $params['heights'] );
+		}
+		
+		wfRunHooks( 'BeforeParserrenderImageGallery', array( &$this, &$ig ) );
+
+		$lines = explode( "\n", $text );
+		foreach ( $lines as $line ) {
+			# match lines like these:
+			# Image:someimage.jpg|This is some image
+			$matches = array();
+			preg_match( "/^([^|]+)(\\|(.*))?$/", $line, $matches );
+			# Skip empty lines
+			if ( count( $matches ) == 0 ) {
+				continue;
+			}
+			$tp = Title::newFromText( $matches[1] );
+			$nt =& $tp;
+			if( is_null( $nt ) ) {
+				# Bogus title. Ignore these so we don't bomb out later.
+				continue;
+			}
+			if ( isset( $matches[3] ) ) {
+				$label = $matches[3];
+			} else {
+				$label = '';
+			}
+
+			$pout = $this->parse( $label,
+				$this->mTitle,
+				$this->mOptions,
+				false, // Strip whitespace...?
+				false  // Don't clear state!
+			);
+			$html = $pout->getText();
+
+			$ig->add( $nt, $html );
+
+			# Only add real images (bug #5586)
+			if ( $nt->getNamespace() == NS_IMAGE ) {
+				$this->mOutput->addImage( $nt->getDBkey() );
+			}
+		}
+		return $ig->toHTML();
+	}
+
+	function getImageParams( $handler ) {
+		if ( $handler ) {
+			$handlerClass = get_class( $handler );
+		} else {
+			$handlerClass = '';
+		}
+		if ( !isset( $this->mImageParams[$handlerClass]  ) ) {
+			// Initialise static lists
+			static $internalParamNames = array(
+				'horizAlign' => array( 'left', 'right', 'center', 'none' ),
+				'vertAlign' => array( 'baseline', 'sub', 'super', 'top', 'text-top', 'middle', 
+					'bottom', 'text-bottom' ),
+				'frame' => array( 'thumbnail', 'manualthumb', 'framed', 'frameless', 
+					'upright', 'border' ),
+			);
+			static $internalParamMap;
+			if ( !$internalParamMap ) {
+				$internalParamMap = array();
+				foreach ( $internalParamNames as $type => $names ) {
+					foreach ( $names as $name ) {
+						$magicName = str_replace( '-', '_', "img_$name" );
+						$internalParamMap[$magicName] = array( $type, $name );
+					}
+				}
+			}
+
+			// Add handler params
+			$paramMap = $internalParamMap;
+			if ( $handler ) {
+				$handlerParamMap = $handler->getParamMap();
+				foreach ( $handlerParamMap as $magic => $paramName ) {
+					$paramMap[$magic] = array( 'handler', $paramName );
+				}
+			}
+			$this->mImageParams[$handlerClass] = $paramMap;
+			$this->mImageParamsMagicArray[$handlerClass] = new MagicWordArray( array_keys( $paramMap ) );
+		}
+		return array( $this->mImageParams[$handlerClass], $this->mImageParamsMagicArray[$handlerClass] );
+	}
+
+	/**
+	 * Parse image options text and use it to make an image
+	 */
+	function makeImage( $title, $options ) {
+		# @TODO: let the MediaHandler specify its transform parameters
+		#
+		# Check if the options text is of the form "options|alt text"
+		# Options are:
+		#  * thumbnail       	make a thumbnail with enlarge-icon and caption, alignment depends on lang
+		#  * left		no resizing, just left align. label is used for alt= only
+		#  * right		same, but right aligned
+		#  * none		same, but not aligned
+		#  * ___px		scale to ___ pixels width, no aligning. e.g. use in taxobox
+		#  * center		center the image
+		#  * framed		Keep original image size, no magnify-button.
+		#  * frameless		like 'thumb' but without a frame. Keeps user preferences for width
+		#  * upright		reduce width for upright images, rounded to full __0 px
+		#  * border		draw a 1px border around the image
+		# vertical-align values (no % or length right now):
+		#  * baseline
+		#  * sub
+		#  * super
+		#  * top
+		#  * text-top
+		#  * middle
+		#  * bottom
+		#  * text-bottom
+		
+		$parts = array_map( 'trim', explode( '|', $options) );
+		$sk = $this->mOptions->getSkin();
+
+		# Give extensions a chance to select the file revision for us
+		$skip = $time = false;
+		wfRunHooks( 'BeforeParserMakeImageLinkObj', array( &$this, &$title, &$skip, &$time ) );
+
+		if ( $skip ) {
+			return $sk->makeLinkObj( $title );
+		}
+
+		# Get parameter map
+		$file = wfFindFile( $title, $time );
+		$handler = $file ? $file->getHandler() : false;
+
+		list( $paramMap, $mwArray ) = $this->getImageParams( $handler );
+
+		# Process the input parameters
+		$caption = '';
+		$params = array( 'frame' => array(), 'handler' => array(), 
+			'horizAlign' => array(), 'vertAlign' => array() );
+		foreach( $parts as $part ) {
+			list( $magicName, $value ) = $mwArray->matchVariableStartToEnd( $part );
+			if ( isset( $paramMap[$magicName] ) ) {
+				list( $type, $paramName ) = $paramMap[$magicName];
+				$params[$type][$paramName] = $value;
+				
+				// Special case; width and height come in one variable together
+				if( $type == 'handler' && $paramName == 'width' ) {
+					$m = array();
+					if ( preg_match( '/^([0-9]*)x([0-9]*)$/', $value, $m ) ) {
+						$params[$type]['width'] = intval( $m[1] );
+						$params[$type]['height'] = intval( $m[2] );
+					} else {
+						$params[$type]['width'] = intval( $value );
+					}
+				}
+			} else {
+				$caption = $part;
+			}
+		}
+
+		# Process alignment parameters
+		if ( $params['horizAlign'] ) {
+			$params['frame']['align'] = key( $params['horizAlign'] );
+		}
+		if ( $params['vertAlign'] ) {
+			$params['frame']['valign'] = key( $params['vertAlign'] );
+		}
+
+		# Validate the handler parameters
+		if ( $handler ) {
+			foreach ( $params['handler'] as $name => $value ) {
+				if ( !$handler->validateParam( $name, $value ) ) {
+					unset( $params['handler'][$name] );
+				}
+			}
+		}
+
+		# Strip bad stuff out of the alt text
+		$alt = $this->replaceLinkHoldersText( $caption );
+
+		# make sure there are no placeholders in thumbnail attributes
+		# that are later expanded to html- so expand them now and
+		# remove the tags
+		$alt = $this->mStripState->unstripBoth( $alt );
+		$alt = Sanitizer::stripAllTags( $alt );
+
+		$params['frame']['alt'] = $alt;
+		$params['frame']['caption'] = $caption;
+
+		# Linker does the rest
+		$ret = $sk->makeImageLink2( $title, $file, $params['frame'], $params['handler'] );
+
+		# Give the handler a chance to modify the parser object
+		if ( $handler ) {
+			$handler->parserTransformHook( $this, $file );
+		}
+
+		return $ret;
+	}
+
+	/**
+	 * Set a flag in the output object indicating that the content is dynamic and
+	 * shouldn't be cached.
+	 */
+	function disableCache() {
+		wfDebug( "Parser output marked as uncacheable.\n" );
+		$this->mOutput->mCacheTime = -1;
+	}
+
+	/**#@+
+	 * Callback from the Sanitizer for expanding items found in HTML attribute
+	 * values, so they can be safely tested and escaped.
+	 * @param string $text
+	 * @param array $args
+	 * @return string
+	 * @private
+	 */
+	function attributeStripCallback( &$text, $args ) {
+		$text = $this->replaceVariables( $text, $args );
+		$text = $this->mStripState->unstripBoth( $text );
+		return $text;
+	}
+
+	/**#@-*/
+
+	/**#@+
+	 * Accessor/mutator
+	 */
+	function Title( $x = NULL ) { return wfSetVar( $this->mTitle, $x ); }
+	function Options( $x = NULL ) { return wfSetVar( $this->mOptions, $x ); }
+	function OutputType( $x = NULL ) { return wfSetVar( $this->mOutputType, $x ); }
+	/**#@-*/
+
+	/**#@+
+	 * Accessor
+	 */
+	function getTags() { return array_merge( array_keys($this->mTransparentTagHooks), array_keys( $this->mTagHooks ) ); }
+	/**#@-*/
+
+
+	/**
+	 * Break wikitext input into sections, and either pull or replace
+	 * some particular section's text.
+	 *
+	 * External callers should use the getSection and replaceSection methods.
+	 *
+	 * @param $text Page wikitext
+	 * @param $section Numbered section. 0 pulls the text before the first
+	 *                 heading; other numbers will pull the given section
+	 *                 along with its lower-level subsections.
+	 * @param $mode One of "get" or "replace"
+	 * @param $newtext Replacement text for section data.
+	 * @return string for "get", the extracted section text.
+	 *                for "replace", the whole page with the section replaced.
+	 */
+	private function extractSections( $text, $section, $mode, $newtext='' ) {
+		# I.... _hope_ this is right.
+		# Otherwise, sometimes we don't have things initialized properly.
+		$this->clearState();
+		
+		# strip NOWIKI etc. to avoid confusion (true-parameter causes HTML
+		# comments to be stripped as well)
+		$stripState = new StripState;
+
+		$oldOutputType = $this->mOutputType;
+		$oldOptions = $this->mOptions;
+		$this->mOptions = new ParserOptions();
+		$this->setOutputType( self::OT_WIKI );
+
+		$striptext = $this->strip( $text, $stripState, true );
+
+		$this->setOutputType( $oldOutputType );
+		$this->mOptions = $oldOptions;
+
+		# now that we can be sure that no pseudo-sections are in the source,
+		# split it up by section
+		$uniq = preg_quote( $this->uniqPrefix(), '/' );
+		$comment = "(?:$uniq-!--.*?QINU\x07)";
+		$secs = preg_split(
+			"/
+			(
+				^
+				(?:$comment|<\/?noinclude>)* # Initial comments will be stripped
+				(=+) # Should this be limited to 6?
+				.+?  # Section title...
+				\\2  # Ending = count must match start
+				(?:$comment|<\/?noinclude>|[ \\t]+)* # Trailing whitespace ok
+				$
+			|
+				<h([1-6])\b.*?>
+				.*?
+				<\/h\\3\s*>
+			)
+			/mix",
+			$striptext, -1,
+			PREG_SPLIT_DELIM_CAPTURE);
+
+		if( $mode == "get" ) {
+			if( $section == 0 ) {
+				// "Section 0" returns the content before any other section.
+				$rv = $secs[0];
+			} else {
+			  	//track missing section, will replace if found.
+				$rv = $newtext;
+			}
+		} elseif( $mode == "replace" ) {
+			if( $section == 0 ) {
+				$rv = $newtext . "\n\n";
+				$remainder = true;
+			} else {
+				$rv = $secs[0];
+				$remainder = false;
+			}
+		}
+		$count = 0;
+		$sectionLevel = 0;
+		for( $index = 1; $index < count( $secs ); ) {
+			$headerLine = $secs[$index++];
+			if( $secs[$index] ) {
+				// A wiki header
+				$headerLevel = strlen( $secs[$index++] );
+			} else {
+				// An HTML header
+				$index++;
+				$headerLevel = intval( $secs[$index++] );
+			}
+			$content = $secs[$index++];
+
+			$count++;
+			if( $mode == "get" ) {
+				if( $count == $section ) {
+					$rv = $headerLine . $content;
+					$sectionLevel = $headerLevel;
+				} elseif( $count > $section ) {
+					if( $sectionLevel && $headerLevel > $sectionLevel ) {
+						$rv .= $headerLine . $content;
+					} else {
+						// Broke out to a higher-level section
+						break;
+					}
+				}
+			} elseif( $mode == "replace" ) {
+				if( $count < $section ) {
+					$rv .= $headerLine . $content;
+				} elseif( $count == $section ) {
+					$rv .= $newtext . "\n\n";
+					$sectionLevel = $headerLevel;
+				} elseif( $count > $section ) {
+					if( $headerLevel <= $sectionLevel ) {
+						// Passed the section's sub-parts.
+						$remainder = true;
+					}
+					if( $remainder ) {
+						$rv .= $headerLine . $content;
+					}
+				}
+			}
+		}
+		if (is_string($rv))
+			# reinsert stripped tags
+			$rv = trim( $stripState->unstripBoth( $rv ) );
+
+		return $rv;
+	}
+
+	/**
+	 * This function returns the text of a section, specified by a number ($section).
+	 * A section is text under a heading like == Heading == or \<h1\>Heading\</h1\>, or
+	 * the first section before any such heading (section 0).
+	 *
+	 * If a section contains subsections, these are also returned.
+	 *
+	 * @param $text String: text to look in
+	 * @param $section Integer: section number
+	 * @param $deftext: default to return if section is not found
+	 * @return string text of the requested section
+	 */
+	public function getSection( $text, $section, $deftext='' ) {
+		return $this->extractSections( $text, $section, "get", $deftext );
+	}
+
+	public function replaceSection( $oldtext, $section, $text ) {
+		return $this->extractSections( $oldtext, $section, "replace", $text );
+	}
+
+	/**
+	 * Get the timestamp associated with the current revision, adjusted for
+	 * the default server-local timestamp
+	 */
+	function getRevisionTimestamp() {
+		if ( is_null( $this->mRevisionTimestamp ) ) {
+			wfProfileIn( __METHOD__ );
+			global $wgContLang;
+			$dbr = wfGetDB( DB_SLAVE );
+			$timestamp = $dbr->selectField( 'revision', 'rev_timestamp',
+					array( 'rev_id' => $this->mRevisionId ), __METHOD__ );
+
+			// Normalize timestamp to internal MW format for timezone processing.
+			// This has the added side-effect of replacing a null value with
+			// the current time, which gives us more sensible behavior for
+			// previews.
+			$timestamp = wfTimestamp( TS_MW, $timestamp );
+
+			// The cryptic '' timezone parameter tells to use the site-default
+			// timezone offset instead of the user settings.
+			//
+			// Since this value will be saved into the parser cache, served
+			// to other users, and potentially even used inside links and such,
+			// it needs to be consistent for all visitors.
+			$this->mRevisionTimestamp = $wgContLang->userAdjust( $timestamp, '' );
+
+			wfProfileOut( __METHOD__ );
+		}
+		return $this->mRevisionTimestamp;
+	}
+
+	/**
+	 * Mutator for $mDefaultSort
+	 *
+	 * @param $sort New value
+	 */
+	public function setDefaultSort( $sort ) {
+		$this->mDefaultSort = $sort;
+	}
+
+	/**
+	 * Accessor for $mDefaultSort
+	 * Will use the title/prefixed title if none is set
+	 *
+	 * @return string
+	 */
+	public function getDefaultSort() {
+		if( $this->mDefaultSort !== false ) {
+			return $this->mDefaultSort;
+		} else {
+			return $this->mTitle->getNamespace() == NS_CATEGORY
+					? $this->mTitle->getText()
+					: $this->mTitle->getPrefixedText();
+		}
+	}
+
+	/**
+	 * Try to guess the section anchor name based on a wikitext fragment 
+	 * presumably extracted from a heading, for example "Header" from 
+	 * "== Header ==".
+	 */
+	public function guessSectionNameFromWikiText( $text ) {
+		# Strip out wikitext links(they break the anchor)
+		$text = $this->stripSectionName( $text );
+		$headline = Sanitizer::decodeCharReferences( $text );
+		# strip out HTML
+		$headline = StringUtils::delimiterReplace( '<', '>', '', $headline );
+		$headline = trim( $headline );
+		$sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
+		$replacearray = array(
+			'%3A' => ':',
+			'%' => '.'
+		);
+		return str_replace(
+			array_keys( $replacearray ),
+			array_values( $replacearray ),
+			$sectionanchor );
+	}
+
+	/**
+	 * Strips a text string of wikitext for use in a section anchor
+	 * 
+	 * Accepts a text string and then removes all wikitext from the
+	 * string and leaves only the resultant text (i.e. the result of
+	 * [[User:WikiSysop|Sysop]] would be "Sysop" and the result of
+	 * [[User:WikiSysop]] would be "User:WikiSysop") - this is intended
+	 * to create valid section anchors by mimicing the output of the
+	 * parser when headings are parsed.
+	 * 
+	 * @param $text string Text string to be stripped of wikitext
+	 * for use in a Section anchor
+	 * @return Filtered text string
+	 */
+	public function stripSectionName( $text ) {
+		# Strip internal link markup
+		$text = preg_replace('/\[\[:?([^[|]+)\|([^[]+)\]\]/','$2',$text);
+		$text = preg_replace('/\[\[:?([^[]+)\|?\]\]/','$1',$text);
+		
+		# Strip external link markup (FIXME: Not Tolerant to blank link text
+		# I.E. [http://www.mediawiki.org] will render as [1] or something depending
+		# on how many empty links there are on the page - need to figure that out.
+		$text = preg_replace('/\[(?:' . wfUrlProtocols() . ')([^ ]+?) ([^[]+)\]/','$2',$text);
+		
+		# Parse wikitext quotes (italics & bold)
+		$text = $this->doQuotes($text);
+		
+		# Strip HTML tags
+		$text = StringUtils::delimiterReplace( '<', '>', '', $text );
+		return $text;
+	}
+
+	/**
+	 * strip/replaceVariables/unstrip for preprocessor regression testing
+	 */
+	function srvus( $text ) {
+		$text = $this->strip( $text, $this->mStripState );
+		$text = Sanitizer::removeHTMLtags( $text );
+		$text = $this->replaceVariables( $text );
+		$text = preg_replace( '/<!--MWTEMPLATESECTION.*?-->/', '', $text );
+		$text = $this->mStripState->unstripBoth( $text );
+		return $text;
+	}
+}
+