X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=includes%2FParser.php;h=41eabe4f54b47fc82eeafd082bde57f3dac01a6c;hb=bacf4234d4fa55f686549579fc8c918fb4781a79;hp=2899a11c7a317f17f6babee4c47a148932b5f137;hpb=852b0dcfa7801dea980625cde2135dceb3482b8b;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/Parser.php b/includes/Parser.php
index 2899a11c7a..41eabe4f54 100644
--- a/includes/Parser.php
+++ b/includes/Parser.php
@@ -15,15 +15,17 @@
  * (which in turn the browser understands, and can display).
  *
  * <pre>
- * There are four main entry points into the Parser class:
+ * There are five main entry points into the Parser class:
  * parse()
  *   produces HTML output
  * preSaveTransform().
  *   produces altered wiki markup.
- * transformMsg()
- *   performs brace substitution on MediaWiki messages
  * preprocess()
  *   removes HTML comments and expands templates
+ * cleanSig()
+ *   Cleans a signature before saving it to preferences
+ * extractSections()
+ *   Extracts sections from an article for section editing
  *
  * Globals used:
  *    objects:   $wgLang, $wgContLang
@@ -48,7 +50,7 @@ class Parser
 	 * changes in an incompatible way, so the parser cache
 	 * can automatically discard old data.
 	 */
-	const VERSION = '1.6.2';
+	const VERSION = '1.6.4';
 
 	# Flags for Parser::setFunctionHook
 	# Also available as global constants from Defines.php
@@ -71,22 +73,31 @@ class Parser
 	const COLON_STATE_COMMENTDASH = 6;
 	const COLON_STATE_COMMENTDASHDASH = 7;
 
+	// Flags for preprocessToDom
+	const PTD_FOR_INCLUSION = 1;
+
+	// Allowed values for $this->mOutputType
+	// Parameter to startExternalParse().
+	const OT_HTML = 1;
+	const OT_WIKI = 2;
+	const OT_PREPROCESS = 3;
+	const OT_MSG = 3;
+	
 	/**#@+
 	 * @private
 	 */
 	# Persistent:
 	var $mTagHooks, $mTransparentTagHooks, $mFunctionHooks, $mFunctionSynonyms, $mVariables,
-		$mImageParams, $mImageParamsMagicArray, $mStripList, $mMarkerSuffix,
-		$mExtLinkBracketedRegex;
-	
+		$mImageParams, $mImageParamsMagicArray, $mStripList, $mMarkerSuffix, $mMarkerIndex,
+		$mExtLinkBracketedRegex, $mPreprocessor, $mDefaultStripList, $mVarCache, $mConf;
+
+
 	# Cleared with clearState():
 	var $mOutput, $mAutonumber, $mDTopen, $mStripState;
 	var $mIncludeCount, $mArgStack, $mLastSection, $mInPre;
 	var $mInterwikiLinkHolders, $mLinkHolders;
 	var $mIncludeSizes, $mPPNodeCount, $mDefaultSort;
-	var $mTplExpandCache,// empty-frame expansion cache
-	    $mTemplatePath;	// stores an unsorted hash of all the templates already loaded
-		                // in this path. Used for loop detection.
+	var $mTplExpandCache; // empty-frame expansion cache
 	var $mTplRedirCache, $mTplDomCache, $mHeadings;
 
 	# Temporary
@@ -107,14 +118,22 @@ class Parser
 	 * @public
 	 */
 	function __construct( $conf = array() ) {
+		$this->mConf = $conf;
 		$this->mTagHooks = array();
 		$this->mTransparentTagHooks = array();
 		$this->mFunctionHooks = array();
 		$this->mFunctionSynonyms = array( 0 => array(), 1 => array() );
-		$this->mStripList = array( 'nowiki', 'gallery' );
+		$this->mDefaultStripList = $this->mStripList = array( 'nowiki', 'gallery' );
 		$this->mMarkerSuffix = "-QINU\x7f";
 		$this->mExtLinkBracketedRegex = '/\[(\b(' . wfUrlProtocols() . ')'.
 			'[^][<>"\\x00-\\x20\\x7F]+) *([^\]\\x0a\\x0d]*?)\]/S';
+		$this->mVarCache = array();
+		if ( isset( $conf['preprocessorClass'] ) ) {
+			$this->mPreprocessorClass = $conf['preprocessorClass'];
+		} else {
+			$this->mPreprocessorClass = 'Preprocessor_DOM';
+		}
+		$this->mMarkerIndex = 0;
 		$this->mFirstCall = true;
 	}
 	
@@ -125,6 +144,7 @@ class Parser
 		if ( !$this->mFirstCall ) {
 			return;
 		}
+		$this->mFirstCall = false;
 		
 		wfProfileIn( __METHOD__ );
 		global $wgAllowDisplayTitle, $wgAllowSlowParserFunctions;
@@ -163,6 +183,7 @@ class Parser
 		$this->setFunctionHook( 'special',          array( 'CoreParserFunctions', 'special'          ) );
 		$this->setFunctionHook( 'defaultsort',      array( 'CoreParserFunctions', 'defaultsort'      ), SFH_NO_HASH );
 		$this->setFunctionHook( 'filepath',         array( 'CoreParserFunctions', 'filepath'         ), SFH_NO_HASH );
+		$this->setFunctionHook( 'tag',              array( 'CoreParserFunctions', 'tagObj'           ), SFH_OBJECT_ARGS );
 
 		if ( $wgAllowDisplayTitle ) {
 			$this->setFunctionHook( 'displaytitle', array( 'CoreParserFunctions', 'displaytitle' ), SFH_NO_HASH );
@@ -172,7 +193,8 @@ class Parser
 		}
 
 		$this->initialiseVariables();
-		$this->mFirstCall = false;
+
+		wfRunHooks( 'ParserFirstCallInit', array( &$this ) );
 		wfProfileOut( __METHOD__ );
 	}
 
@@ -218,10 +240,11 @@ class Parser
 		 * the behaviour of <nowiki> in a link.
 		 */
 		#$this->mUniqPrefix = "\x07UNIQ" . Parser::getRandomString();
+		# Changed to \x7f to allow XML double-parsing -- TS
 		$this->mUniqPrefix = "\x7fUNIQ" . Parser::getRandomString();
 
+
 		# Clear these on every parse, bug 4549
- 		$this->mTemplatePath = array();
 		$this->mTplExpandCache = $this->mTplRedirCache = $this->mTplDomCache = array();
 
 		$this->mShowToc = true;
@@ -234,6 +257,11 @@ class Parser
 		$this->mDefaultSort = false;
 		$this->mHeadings = array();
 
+		# Fix cloning
+		if ( isset( $this->mPreprocessor ) && $this->mPreprocessor->parser !== $this ) {
+			$this->mPreprocessor = null;
+		}
+
 		wfRunHooks( 'ParserClearState', array( &$this ) );
 		wfProfileOut( __METHOD__ );
 	}
@@ -242,13 +270,28 @@ class Parser
 		$this->mOutputType = $ot;
 		// Shortcut alias
 		$this->ot = array(
-			'html' => $ot == OT_HTML,
-			'wiki' => $ot == OT_WIKI,
-			'msg' => $ot == OT_MSG,
-			'pre' => $ot == OT_PREPROCESS,
+			'html' => $ot == self::OT_HTML,
+			'wiki' => $ot == self::OT_WIKI,
+			'pre' => $ot == self::OT_PREPROCESS,
 		);
 	}
 
+	/**
+	 * Set the context title
+	 */
+	function setTitle( $t ) {
+		if ( !$t || $t instanceof FakeTitle ) {
+			$t = Title::newFromText( 'NO TITLE' );
+		}
+		if ( strval( $t->getFragment() ) !== '' ) {
+			# Strip the fragment to avoid various odd effects
+			$this->mTitle = clone $t;
+			$this->mTitle->setFragment( '' );
+		} else {
+			$this->mTitle = $t;
+		}
+	}
+
 	/**
 	 * Accessor for mUniqPrefix.
 	 *
@@ -295,14 +338,14 @@ class Parser
 		}
 
 		$this->mOptions = $options;
-		$this->mTitle =& $title;
+		$this->setTitle( $title );
 		$oldRevisionId = $this->mRevisionId;
 		$oldRevisionTimestamp = $this->mRevisionTimestamp;
 		if( $revid !== null ) {
 			$this->mRevisionId = $revid;
 			$this->mRevisionTimestamp = null;
 		}
-		$this->setOutputType( OT_HTML );
+		$this->setOutputType( self::OT_HTML );
 		wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$this->mStripState ) );
 		# No more strip!
 		wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$this->mStripState ) );
@@ -392,6 +435,7 @@ class Parser
 		if ( $this->mOptions->getEnableLimitReport() ) {
 			$max = $this->mOptions->getMaxIncludeSize();
 			$limitReport = 
+				"NewPP limit report\n" . 
 				"Preprocessor node count: {$this->mPPNodeCount}/{$this->mOptions->mMaxPPNodeCount}\n" .
 				"Post-expand include size: {$this->mIncludeSizes['post-expand']}/$max bytes\n" .
 				"Template argument size: {$this->mIncludeSizes['arg']}/$max bytes\n";
@@ -427,18 +471,15 @@ class Parser
 	function preprocess( $text, $title, $options, $revid = null ) {
 		wfProfileIn( __METHOD__ );
 		$this->clearState();
-		$this->setOutputType( OT_PREPROCESS );
+		$this->setOutputType( self::OT_PREPROCESS );
 		$this->mOptions = $options;
-		$this->mTitle = $title;
+		$this->setTitle( $title );
 		if( $revid !== null ) {
 			$this->mRevisionId = $revid;
 		}
 		wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$this->mStripState ) );
 		wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$this->mStripState ) );
 		$text = $this->replaceVariables( $text );
-		if ( $this->mOptions->getRemoveComments() ) {
-			$text = Sanitizer::removeHTMLcomments( $text );
-		}
 		$text = $this->mStripState->unstripBoth( $text );
 		wfProfileOut( __METHOD__ );
 		return $text;
@@ -462,9 +503,20 @@ class Parser
 		return $this->mOptions->getInterfaceMessage() ? $wgLang : $wgContLang;
 	}
 
+	/**
+	 * Get a preprocessor object
+	 */
+	function getPreprocessor() {
+		if ( !isset( $this->mPreprocessor ) ) {
+			$class = $this->mPreprocessorClass;
+			$this->mPreprocessor = new $class( $this );
+		}
+		return $this->mPreprocessor;
+	}
+
 	/**
 	 * 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
+	 * in the text with a random marker and returns the next text. The output
 	 * parameter $matches will be an associative array filled with data in
 	 * the form:
 	 *   'UNIQ-xxxxx' => array(
@@ -600,9 +652,8 @@ class Parser
 	 * @private
 	 */
 	function insertStripItem( $text ) {
-		static $n = 0;
-		$rnd = "{$this->mUniqPrefix}-item-$n-{$this->mMarkerSuffix}";
-		++$n;
+		$rnd = "{$this->mUniqPrefix}-item-{$this->mMarkerIndex}-{$this->mMarkerSuffix}";
+		$this->mMarkerIndex++;
 		$this->mStripState->general->setPair( $rnd, $text );
 		return $rnd;
 	}
@@ -913,7 +964,7 @@ class Parser
 
 	/**
 	 * Helper function for parse() that transforms wiki markup into
-	 * HTML. Only called for $mOutputType == OT_HTML.
+	 * HTML. Only called for $mOutputType == self::OT_HTML.
 	 *
 	 * @private
 	 */
@@ -928,11 +979,6 @@ class Parser
 			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 = $this->replaceVariables( $text );
 		$text = Sanitizer::removeHTMLtags( $text, array( &$this, 'attributeStripCallback' ), false, array_keys( $this->mTransparentTagHooks ) );
 		wfRunHooks( 'InternalParseBeforeLinks', array( &$this, &$text, &$this->mStripState ) );
@@ -2337,14 +2383,13 @@ class Parser
 		 * 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];
+		if ( wfRunHooks( 'ParserGetVariableValueVarCache', array( &$this, &$this->mVarCache ) ) ) {
+			if ( isset( $this->mVarCache[$index] ) ) {
+				return $this->mVarCache[$index];
 			}
 		}
 
-		$ts = time();
+		$ts = wfTimestamp( TS_UNIX, $this->mOptions->getTimestamp() );
 		wfRunHooks( 'ParserGetVariableValueTs', array( &$this, &$ts ) );
 
 		# Use the time zone
@@ -2371,29 +2416,29 @@ class Parser
 
 		switch ( $index ) {
 			case 'currentmonth':
-				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'm', $ts ) );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( gmdate( 'm', $ts ) );
 			case 'currentmonthname':
-				return $varCache[$index] = $wgContLang->getMonthName( gmdate( 'n', $ts ) );
+				return $this->mVarCache[$index] = $wgContLang->getMonthName( gmdate( 'n', $ts ) );
 			case 'currentmonthnamegen':
-				return $varCache[$index] = $wgContLang->getMonthNameGen( gmdate( 'n', $ts ) );
+				return $this->mVarCache[$index] = $wgContLang->getMonthNameGen( gmdate( 'n', $ts ) );
 			case 'currentmonthabbrev':
-				return $varCache[$index] = $wgContLang->getMonthAbbreviation( gmdate( 'n', $ts ) );
+				return $this->mVarCache[$index] = $wgContLang->getMonthAbbreviation( gmdate( 'n', $ts ) );
 			case 'currentday':
-				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'j', $ts ) );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( gmdate( 'j', $ts ) );
 			case 'currentday2':
-				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'd', $ts ) );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( gmdate( 'd', $ts ) );
 			case 'localmonth':
-				return $varCache[$index] = $wgContLang->formatNum( $localMonth );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( $localMonth );
 			case 'localmonthname':
-				return $varCache[$index] = $wgContLang->getMonthName( $localMonthName );
+				return $this->mVarCache[$index] = $wgContLang->getMonthName( $localMonthName );
 			case 'localmonthnamegen':
-				return $varCache[$index] = $wgContLang->getMonthNameGen( $localMonthName );
+				return $this->mVarCache[$index] = $wgContLang->getMonthNameGen( $localMonthName );
 			case 'localmonthabbrev':
-				return $varCache[$index] = $wgContLang->getMonthAbbreviation( $localMonthName );
+				return $this->mVarCache[$index] = $wgContLang->getMonthAbbreviation( $localMonthName );
 			case 'localday':
-				return $varCache[$index] = $wgContLang->formatNum( $localDay );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( $localDay );
 			case 'localday2':
-				return $varCache[$index] = $wgContLang->formatNum( $localDay2 );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( $localDay2 );
 			case 'pagename':
 				return wfEscapeWikiText( $this->mTitle->getText() );
 			case 'pagenamee':
@@ -2437,14 +2482,34 @@ class Parser
 				wfDebug( __METHOD__ . ": {{REVISIONID}} used, setting vary-revision...\n" );
 				return $this->mRevisionId;
 			case 'revisionday':
+				// Let the edit saving system know we should parse the page
+				// *after* a revision ID has been assigned. This is for null edits.
+				$this->mOutput->setFlag( 'vary-revision' );
+				wfDebug( __METHOD__ . ": {{REVISIONDAY}} used, setting vary-revision...\n" );
 				return intval( substr( $this->getRevisionTimestamp(), 6, 2 ) );
 			case 'revisionday2':
+				// Let the edit saving system know we should parse the page
+				// *after* a revision ID has been assigned. This is for null edits.
+				$this->mOutput->setFlag( 'vary-revision' );
+				wfDebug( __METHOD__ . ": {{REVISIONDAY2}} used, setting vary-revision...\n" );
 				return substr( $this->getRevisionTimestamp(), 6, 2 );
 			case 'revisionmonth':
+				// Let the edit saving system know we should parse the page
+				// *after* a revision ID has been assigned. This is for null edits.
+				$this->mOutput->setFlag( 'vary-revision' );
+				wfDebug( __METHOD__ . ": {{REVISIONMONTH}} used, setting vary-revision...\n" );
 				return intval( substr( $this->getRevisionTimestamp(), 4, 2 ) );
 			case 'revisionyear':
+				// Let the edit saving system know we should parse the page
+				// *after* a revision ID has been assigned. This is for null edits.
+				$this->mOutput->setFlag( 'vary-revision' );
+				wfDebug( __METHOD__ . ": {{REVISIONYEAR}} used, setting vary-revision...\n" );
 				return substr( $this->getRevisionTimestamp(), 0, 4 );
 			case 'revisiontimestamp':
+				// Let the edit saving system know we should parse the page
+				// *after* a revision ID has been assigned. This is for null edits.
+				$this->mOutput->setFlag( 'vary-revision' );
+				wfDebug( __METHOD__ . ": {{REVISIONTIMESTAMP}} used, setting vary-revision...\n" );
 				return $this->getRevisionTimestamp();
 			case 'namespace':
 				return str_replace('_',' ',$wgContLang->getNsText( $this->mTitle->getNamespace() ) );
@@ -2459,51 +2524,51 @@ class Parser
 			case 'subjectspacee':
 				return( wfUrlencode( $this->mTitle->getSubjectNsText() ) );
 			case 'currentdayname':
-				return $varCache[$index] = $wgContLang->getWeekdayName( gmdate( 'w', $ts ) + 1 );
+				return $this->mVarCache[$index] = $wgContLang->getWeekdayName( gmdate( 'w', $ts ) + 1 );
 			case 'currentyear':
-				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'Y', $ts ), true );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( gmdate( 'Y', $ts ), true );
 			case 'currenttime':
-				return $varCache[$index] = $wgContLang->time( wfTimestamp( TS_MW, $ts ), false, false );
+				return $this->mVarCache[$index] = $wgContLang->time( wfTimestamp( TS_MW, $ts ), false, false );
 			case 'currenthour':
-				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'H', $ts ), true );
+				return $this->mVarCache[$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 ) );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( (int)gmdate( 'W', $ts ) );
 			case 'currentdow':
-				return $varCache[$index] = $wgContLang->formatNum( gmdate( 'w', $ts ) );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( gmdate( 'w', $ts ) );
 			case 'localdayname':
-				return $varCache[$index] = $wgContLang->getWeekdayName( $localDayOfWeek + 1 );
+				return $this->mVarCache[$index] = $wgContLang->getWeekdayName( $localDayOfWeek + 1 );
 			case 'localyear':
-				return $varCache[$index] = $wgContLang->formatNum( $localYear, true );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( $localYear, true );
 			case 'localtime':
-				return $varCache[$index] = $wgContLang->time( $localTimestamp, false, false );
+				return $this->mVarCache[$index] = $wgContLang->time( $localTimestamp, false, false );
 			case 'localhour':
-				return $varCache[$index] = $wgContLang->formatNum( $localHour, true );
+				return $this->mVarCache[$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 );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( (int)$localWeek );
 			case 'localdow':
-				return $varCache[$index] = $wgContLang->formatNum( $localDayOfWeek );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( $localDayOfWeek );
 			case 'numberofarticles':
-				return $varCache[$index] = $wgContLang->formatNum( SiteStats::articles() );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( SiteStats::articles() );
 			case 'numberoffiles':
-				return $varCache[$index] = $wgContLang->formatNum( SiteStats::images() );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( SiteStats::images() );
 			case 'numberofusers':
-				return $varCache[$index] = $wgContLang->formatNum( SiteStats::users() );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( SiteStats::users() );
 			case 'numberofpages':
-				return $varCache[$index] = $wgContLang->formatNum( SiteStats::pages() );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( SiteStats::pages() );
 			case 'numberofadmins':
-				return $varCache[$index] = $wgContLang->formatNum( SiteStats::admins() );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( SiteStats::admins() );
 			case 'numberofedits':
-				return $varCache[$index] = $wgContLang->formatNum( SiteStats::edits() );
+				return $this->mVarCache[$index] = $wgContLang->formatNum( SiteStats::edits() );
 			case 'currenttimestamp':
-				return $varCache[$index] = wfTimestampNow();
+				return $this->mVarCache[$index] = wfTimestamp( TS_MW, $ts );
 			case 'localtimestamp':
-				return $varCache[$index] = $localTimestamp;
+				return $this->mVarCache[$index] = $localTimestamp;
 			case 'currentversion':
-				return $varCache[$index] = SpecialVersion::getVersion();
+				return $this->mVarCache[$index] = SpecialVersion::getVersion();
 			case 'sitename':
 				return $wgSitename;
 			case 'server':
@@ -2519,7 +2584,7 @@ class Parser
 				return $wgContLanguageCode;
 			default:
 				$ret = null;
-				if ( wfRunHooks( 'ParserGetVariableValueSwitch', array( &$this, &$varCache, &$index, &$ret ) ) )
+				if ( wfRunHooks( 'ParserGetVariableValueSwitch', array( &$this, &$this->mVarCache, &$index, &$ret ) ) )
 					return $ret;
 				else
 					return null;
@@ -2541,455 +2606,29 @@ class Parser
 	}
 
 	/**
-	 * Parse any parentheses in format ((title|part|part)} and return the document tree
+	 * Preprocess some wikitext and return the document tree.
 	 * This is the ghost of replace_variables(). 
 	 *
 	 * @param string $text The text to parse
+	 * @param integer flags Bitwise combination of:
+	 *          self::PTD_FOR_INCLUSION    Handle <noinclude>/<includeonly> as if the text is being 
+	 *                                     included. Default is to assume a direct page view. 
+	 *
+	 * The generated DOM tree must depend only on the input text and the flags.
+	 * The DOM tree must be the same in OT_HTML and OT_WIKI mode, to avoid a regression of bug 4899. 
+	 *
+	 * Any flag added to the $flags parameter here, or any other parameter liable to cause a 
+	 * change in the DOM tree for a given text, must be passed through the section identifier 
+	 * in the section edit link and thus back to extractSections(). 
+	 *
+	 * The output of this function is currently only cached in process memory, but a persistent 
+	 * cache may be implemented at a later date which takes further advantage of these strict 
+	 * dependency requirements.
+	 *
 	 * @private
 	 */
-	function preprocessToDom ( $text ) {
-		wfProfileIn( __METHOD__ );
-		wfProfileIn( __METHOD__.'-makexml' );
-
-		static $msgRules, $normalRules;
-		if ( !$msgRules ) {
-			$msgRules = array(
-				'{' => array(
-					'end' => '}',
-					'names' => array(
-						2 => 'template',
-					),
-					'min' => 2,
-					'max' => 2,
-				),
-				'[' => array(
-					'end' => ']',
-					'names' => array( 2 => null ),
-					'min' => 2,
-					'max' => 2,
-				)
-			);
-			$normalRules = array(
-				'{' => array(
-					'end' => '}',
-					'names' => array(
-						2 => 'template',
-						3 => 'tplarg',
-					),
-					'min' => 2,
-					'max' => 3,
-				),
-				'[' => array(
-					'end' => ']',
-					'names' => array( 2 => null ),
-					'min' => 2,
-					'max' => 2,
-				)
-			);
-		}
-		if ( $this->ot['msg'] ) {
-			$rules = $msgRules;
-		} else {
-			$rules = $normalRules;
-		}
-
-		$extElements = implode( '|', $this->getStripList() );
-		// Use "A" modifier (anchored) instead of "^", because ^ doesn't work with an offset
-		$extElementsRegex = "/($extElements)(?:\s|\/>|>)|(!--)/iA";
-	
-		$stack = array();      # Stack of unclosed parentheses
-		$stackIndex = -1;      # Stack read pointer
-
-		$searchBase = implode( '', array_keys( $rules ) ) . '<';
-
-		$i = -1; # Input pointer, starts out pointing to a pseudo-newline before the start
-		$topAccum = '<root>';      # Top level text accumulator
-		$accum =& $topAccum;            # Current text accumulator
-		$findEquals = false;            # True to find equals signs in arguments
-		$findHeading = false;           # True to look at LF characters for possible headings
-		$findPipe = false;              # True to take notice of pipe characters
-		$headingIndex = 1;
-		$noMoreGT = false;         # True if there are no more greater-than (>) signs right of $i
-
-		while ( $i < strlen( $text ) ) {
-			if ( $i == -1 ) {
-				$found = 'line-start';
-				$curChar = '';
-			} else {
-				# Find next opening brace, closing brace or pipe
-				$search = $searchBase;
-				if ( $stackIndex == -1 ) {
-					$currentClosing = '';
-					// Look for headings only at the top stack level
-					// Among other things, this resolves the ambiguity between = 
-					// for headings and = for template arguments
-					$search .= "\n";
-				} else {
-					$currentClosing = $stack[$stackIndex]['close'];
-					$search .= $currentClosing;
-				}
-				if ( $findPipe ) {
-					$search .= '|';
-				}
-				if ( $findEquals ) {
-					$search .= '=';
-				}
-				$rule = null;
-				# Output literal section, advance input counter
-				$literalLength = strcspn( $text, $search, $i );
-				if ( $literalLength > 0 ) {
-					$accum .= htmlspecialchars( substr( $text, $i, $literalLength ) );
-					$i += $literalLength;
-				}
-				if ( $i >= strlen( $text ) ) {
-					if ( $currentClosing == "\n" ) {
-						// Do a past-the-end run to finish off the heading
-						$curChar = '';
-						$found = 'line-end';
-					} else {
-						# All done
-						break;
-					}
-				} else {
-					$curChar = $text[$i];
-					if ( $curChar == '|' ) {
-						$found = 'pipe';
-					} elseif ( $curChar == '=' ) {
-						$found = 'equals';
-					} elseif ( $curChar == '<' ) {
-						$found = 'angle';
-					} elseif ( $curChar == "\n" ) {
-						if ( $stackIndex == -1 ) {
-							$found = 'line-start';
-						} else {
-							$found = 'line-end';
-						}
-					} elseif ( $curChar == $currentClosing ) {
-						$found = 'close';
-					} elseif ( isset( $rules[$curChar] ) ) {
-						$found = 'open';
-						$rule = $rules[$curChar];
-					} else {
-						# Some versions of PHP have a strcspn which stops on null characters
-						# Ignore and continue
-						++$i;
-						continue;
-					}
-				}
-			}
-
-			if ( $found == 'angle' ) {
-				$matches = false;
-				// Determine element name
-				if ( !preg_match( $extElementsRegex, $text, $matches, 0, $i + 1 ) ) {
-					// Element name missing or not listed
-					$accum .= '&lt;';
-					++$i;
-					continue;
-				}
-				// Handle comments
-				if ( isset( $matches[2] ) && $matches[2] == '!--' ) {
-					// HTML comment, scan to end
-					$endpos = strpos( $text, '-->', $i + 4 );
-					if ( $endpos === false ) {
-						// Unclosed comment in input, runs to end
-						$accum .= htmlspecialchars( substr( $text, $i ) );
-						if ( $this->ot['html'] ) {
-							// Close it so later stripping can remove it
-							$accum .= htmlspecialchars( '-->' );
-						}
-						$i = strlen( $text );
-						continue;
-					}
-					$accum .= htmlspecialchars( substr( $text, $i, $endpos - $i + 3 ) );
-					#$inner = substr( $text, $i + 4, $endpos - $i - 4 );
-					#$accum .= '<ext><name>!--</name><inner>' . htmlspecialchars( $inner ) . '</inner></ext>';
-					$i = $endpos + 3;
-					continue;
-				}
-				$name = $matches[1];
-				$attrStart = $i + strlen( $name ) + 1;
-
-				// Find end of tag
-				$tagEndPos = $noMoreGT ? false : strpos( $text, '>', $attrStart );
-				if ( $tagEndPos === false ) {
-					// Infinite backtrack
-					// Disable tag search to prevent worst-case O(N^2) performance
-					$noMoreGT = true;
-					$accum .= '&lt;';
-					++$i;
-					continue;
-				}
-				if ( $text[$tagEndPos-1] == '/' ) {
-					$attrEnd = $tagEndPos - 1;
-					$inner = null;
-					$i = $tagEndPos + 1;
-					$close = '';
-				} else {
-					$attrEnd = $tagEndPos;
-					// Find closing tag
-					if ( preg_match( "/<\/$name\s*>/i", $text, $matches, PREG_OFFSET_CAPTURE, $tagEndPos + 1 ) ) {
-						$inner = substr( $text, $tagEndPos + 1, $matches[0][1] - $tagEndPos - 1 );
-						$i = $matches[0][1] + strlen( $matches[0][0] );
-						$close = '<close>' . htmlspecialchars( $matches[0][0] ) . '</close>';
-					} else {
-						// No end tag -- let it run out to the end of the text.
-						$inner = substr( $text, $tagEndPos + 1 );
-						$i = strlen( $text );
-						$close = '';
-					}
-				}
-				$accum .= '<ext>';
-				if ( $attrEnd <= $attrStart ) {
-					$attr = '';
-				} else {
-					$attr = substr( $text, $attrStart, $attrEnd - $attrStart );
-				}
-				$accum .= '<name>' . htmlspecialchars( $name ) . '</name>' .
-					// Note that the attr element contains the whitespace between name and attribute, 
-					// this is necessary for precise reconstruction during pre-save transform.
-					'<attr>' . htmlspecialchars( $attr ) . '</attr>';
-				if ( $inner !== null ) {
-					$accum .= '<inner>' . htmlspecialchars( $inner ) . '</inner>';
-				}
-				$accum .= $close . '</ext>';
-			}
-
-			elseif ( $found == 'line-start' ) {
-				// Is this the start of a heading? 
-				// Line break belongs before the heading element in any case
-				$accum .= $curChar;
-				$i++;
-				
-				$count = strspn( $text, '=', $i, 6 );
-				if ( $count > 0 ) {
-					$piece = array(
-						'open' => "\n",
-						'close' => "\n",
-						'parts' => array( str_repeat( '=', $count ) ),
-						'count' => $count );
-					$stack[++$stackIndex] = $piece;
-					$i += $count;
-					$accum =& $stack[$stackIndex]['parts'][0];
-					$findPipe = false;
-				}
-			}
-
-			elseif ( $found == 'line-end' ) {
-				$piece = $stack[$stackIndex];
-				// A heading must be open, otherwise \n wouldn't have been in the search list
-				assert( $piece['open'] == "\n" );
-				assert( $stackIndex == 0 );
-				// Search back through the accumulator to see if it has a proper close
-				// No efficient way to do this in PHP AFAICT: strrev, PCRE search with $ anchor 
-				// and rtrim are all O(N) in total size. Optimal would be O(N) in trailing 
-				// whitespace size only.
-				$m = false;
-				$count = $piece['count'];
-				if ( preg_match( "/(={{$count}})\s*$/", $accum, $m, 0, $count ) ) {
-					// Found match, output <h>
-					$count = min( strlen( $m[1] ), $count );
-					$element = "<h level=\"$count\" i=\"$headingIndex\">$accum</h>";
-					$headingIndex++;
-				} else {
-					// No match, no <h>, just pass down the inner text
-					$element = $accum;
-				}
-				// Unwind the stack
-				// Headings can only occur on the top level, so this is a bit simpler than the 
-				// generic stack unwind operation in the close case
-				unset( $stack[$stackIndex--] );
-				$accum =& $topAccum;
-				$findEquals = false;
-				$findPipe = false;
-
-				// Append the result to the enclosing accumulator
-				$accum .= $element;
-				// Note that we do NOT increment the input pointer.
-				// This is because the closing linebreak could be the opening linebreak of 
-				// another heading. Infinite loops are avoided because the next iteration MUST
-				// hit the heading open case above, which unconditionally increments the 
-				// input pointer.
-			}
-			
-			elseif ( $found == 'open' ) {
-				# count opening brace characters
-				$count = strspn( $text, $curChar, $i );
-
-				# we need to add to stack only if opening brace count is enough for one of the rules
-				if ( $count >= $rule['min'] ) {
-					# Add it to the stack
-					$piece = array(
-						'open' => $curChar,
-						'close' => $rule['end'],
-						'count' => $count,
-						'parts' => array( '' ),
-						'eqpos' => array(),
-						'lineStart' => ($i > 0 && $text[$i-1] == "\n"),
-					);
-
-					$stackIndex ++;
-					$stack[$stackIndex] = $piece;
-					$accum =& $stack[$stackIndex]['parts'][0];
-					$findEquals = false;
-					$findPipe = true;
-				} else {
-					# Add literal brace(s)
-					$accum .= htmlspecialchars( str_repeat( $curChar, $count ) );
-				}
-				$i += $count;
-			}
-
-			elseif ( $found == 'close' ) {
-				$piece = $stack[$stackIndex];
-				# lets check if there are enough characters for closing brace
-				$maxCount = $piece['count'];
-				$count = strspn( $text, $curChar, $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;
-				$rule = $rules[$piece['open']];
-				if ( $count > $rule['max'] ) {
-					# The specified maximum exists in the callback array, unless the caller
-					# has made an error
-					$matchingCount = $rule['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, $rule['names'] ) ) {
-						--$matchingCount;
-					}
-				}
-
-				if ($matchingCount <= 0) {
-					# No matching element found in callback array
-					# Output a literal closing brace and continue
-					$accum .= htmlspecialchars( str_repeat( $curChar, $count ) );
-					$i += $count;
-					continue;
-				}
-				$name = $rule['names'][$matchingCount];
-				if ( $name === null ) {
-					// No element, just literal text
-					$element = str_repeat( $piece['open'], $matchingCount ) .
-						implode( '|', $piece['parts'] ) . 
-						str_repeat( $rule['end'], $matchingCount );
-				} else {
-					# Create XML element
-					# Note: $parts is already XML, does not need to be encoded further
-					$parts = $piece['parts'];
-					$title = $parts[0];
-					unset( $parts[0] );
-
-					# The invocation is at the start of the line if lineStart is set in 
-					# the stack, and all opening brackets are used up.
-					if ( $maxCount == $matchingCount && !empty( $piece['lineStart'] ) ) {
-						$attr = ' lineStart="1"';
-					} else {
-						$attr = '';
-					}
-
-					$element = "<$name$attr>";
-					$element .= "<title>$title</title>";
-					$argIndex = 1;
-					foreach ( $parts as $partIndex => $part ) {
-						if ( isset( $piece['eqpos'][$partIndex] ) ) {
-							$eqpos = $piece['eqpos'][$partIndex];
-							list( $ws1, $argName, $ws2 ) = self::splitWhitespace( substr( $part, 0, $eqpos ) );
-							list( $ws3, $argValue, $ws4 ) = self::splitWhitespace( substr( $part, $eqpos + 1 ) );
-							$element .= "<part>$ws1<name>$argName</name>$ws2=$ws3<value>$argValue</value>$ws4</part>";
-						} else {
-							list( $ws1, $value, $ws2 ) = self::splitWhitespace( $part );
-							$element .= "<part>$ws1<name index=\"$argIndex\" /><value>$value</value>$ws2</part>";
-							$argIndex++;
-						}
-					}
-					$element .= "</$name>";
-				}
-
-				# Advance input pointer
-				$i += $matchingCount;
-
-				# Unwind the stack
-				unset( $stack[$stackIndex--] );
-				if ( $stackIndex == -1 ) {
-					$accum =& $topAccum;
-					$findEquals = false;
-					$findPipe = false;
-				} else {
-					$partCount = count( $stack[$stackIndex]['parts'] );
-					$accum =& $stack[$stackIndex]['parts'][$partCount - 1];
-					$findPipe = $stack[$stackIndex]['open'] != "\n";
-					$findEquals = $findPipe && $partCount > 1 
-						&& !isset( $stack[$stackIndex]['eqpos'][$partCount - 1] );
-				}
-
-				# Re-add the old stack element if it still has unmatched opening characters remaining
-				if ($matchingCount < $piece['count']) {
-					$piece['parts'] = array( '' );
-					$piece['count'] -= $matchingCount;
-					$piece['eqpos'] = array();
-					# do we still qualify for any callback with remaining count?
-					$names = $rules[$piece['open']]['names'];
-					$skippedBraces = 0;
-					$enclosingAccum =& $accum;
-					while ( $piece['count'] ) {
-						if ( array_key_exists( $piece['count'], $names ) ) {
-							$stackIndex++;
-							$stack[$stackIndex] = $piece;
-							$accum =& $stack[$stackIndex]['parts'][0];
-							$findEquals = true;
-							$findPipe = true;
-							break;
-						}
-						--$piece['count'];
-						$skippedBraces ++;
-					}
-					$enclosingAccum .= str_repeat( $piece['open'], $skippedBraces );
-				}
-
-				# Add XML element to the enclosing accumulator
-				$accum .= $element;
-			}
-			
-			elseif ( $found == 'pipe' ) {
-				$stack[$stackIndex]['parts'][] = '';
-				$partsCount = count( $stack[$stackIndex]['parts'] );
-				$accum =& $stack[$stackIndex]['parts'][$partsCount - 1];
-				$findEquals = true;
-				++$i;
-			} 
-			
-			elseif ( $found == 'equals' ) {
-				$findEquals = false;
-				$partsCount = count( $stack[$stackIndex]['parts'] );
-				$stack[$stackIndex]['eqpos'][$partsCount - 1] = strlen( $accum );
-				$accum .= '=';
-				++$i;
-			}
-		}
-
-		# Output any remaining unclosed brackets
-		foreach ( $stack as $piece ) {
-			if ( $piece['open'] == "\n" ) {
-				$topAccum .= $piece['parts'][0];
-			} else {
-				$topAccum .= str_repeat( $piece['open'], $piece['count'] ) . implode( '|', $piece['parts'] );
-			}
-		}
-		$topAccum .= '</root>';
-
-		wfProfileOut( __METHOD__.'-makexml' );
-		wfProfileIn( __METHOD__.'-loadXML' );
-		$dom = new DOMDocument;
-		if ( !$dom->loadXML( $topAccum ) ) {
-			throw new MWException( __METHOD__.' generated invalid XML' );
-		}
-		wfProfileOut( __METHOD__.'-loadXML' );
-		wfProfileOut( __METHOD__ );
+	function preprocessToDom ( $text, $flags = 0 ) {
+		$dom = $this->getPreprocessor()->preprocessToObj( $text, $flags );
 		return $dom;
 	}
 
@@ -3015,9 +2654,9 @@ class Parser
 	 * taking care to avoid infinite loops.
 	 *
 	 * Note that the substitution depends on value of $mOutputType:
-	 *  OT_WIKI: only {{subst:}} templates
-	 *  OT_MSG: only magic variables
-	 *  OT_HTML: all templates and magic variables
+	 *  self::OT_WIKI: only {{subst:}} templates
+	 *  self::OT_PREPROCESS: templates but not extension tags
+	 *  self::OT_HTML: all templates and extension tags
 	 *
 	 * @param string $tex The text to transform
 	 * @param PPFrame $frame Object describing the arguments passed to the template
@@ -3034,7 +2673,7 @@ class Parser
 		wfProfileIn( $fname );
 
 		if ( $frame === false ) {
-			$frame = new PPFrame( $this );
+			$frame = $this->getPreprocessor()->newFrame();
 		} elseif ( !( $frame instanceof PPFrame ) ) {
 			throw new MWException( __METHOD__ . ' called using the old argument format' );
 		}
@@ -3075,9 +2714,9 @@ class Parser
 	 * 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
+	 *  $piece['lineStart']: whether the brace was at the start of a line
 	 * @param PPFrame The current frame, contains template arguments
 	 * @return string the text of the template
 	 * @private
@@ -3091,11 +2730,10 @@ class Parser
 		# 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
 		$isHTML = false;            # $text is HTML, armour it against wikitext transformation
 		$forceRawInterwiki = false; # Force interwiki transclusion to be done in raw mode not rendered
-		$isDOM = false;             # $text is a DOM node needing expansion
+		$isChildObj = false;        # $text is a DOM node needing expansion in a child frame
+		$isLocalObj = false;        # $text is a DOM node needing expansion in the current frame
 
 		# Title object, where $text came from
 		$title = NULL;
@@ -3122,22 +2760,20 @@ class Parser
 				# 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 = '{{' . $frame->implode( '|', $titleWithSpaces, $args ) . '}}';
+				$text = $frame->virtualBracketedImplode( '{{', '|', '}}', $titleWithSpaces, $args );
+				$isLocalObj = true;
 				$found = true;
-				$noparse = true;
-				$noargs = true;
 			}
 		}
 
 		# Variables
-		if ( !$found && $args->length == 0 ) {
+		if ( !$found && $args->getLength() == 0 ) {
 			$id = $this->mVariables->matchStartToEnd( $part1 );
 			if ( $id !== false ) {
 				$text = $this->getVariableValue( $id );
-				$this->mOutput->mContainsOldMagic = true;
+				if (MagicWord::getCacheTTL($id)>-1)
+					$this->mOutput->mContainsOldMagic = true;
 				$found = true;
-				$noparse = true;
-				$noargs = true;
 			}
 		}
 
@@ -3161,9 +2797,6 @@ class Parser
 		}
 		wfProfileOut( __METHOD__.'-modifiers' );
 
-		# Save path level before recursing into functions & templates.
-		$lastPathLevel = $this->mTemplatePath;
-
 		# Parser functions
 		if ( !$found ) {
 			wfProfileIn( __METHOD__ . '-pfunc' );
@@ -3191,25 +2824,25 @@ class Parser
 						# Add a frame parameter, and pass the arguments as an array
 						$allArgs = $initialArgs;
 						$allArgs[] = $frame;
-						foreach ( $args as $arg ) {
-							$funcArgs[] = $arg;
+						for ( $i = 0; $i < $args->getLength(); $i++ ) {
+							$funcArgs[] = $args->item( $i );
 						}
 						$allArgs[] = $funcArgs;
 					} else {
 						# Convert arguments to plain text
-						foreach ( $args as $arg ) {
-							$funcArgs[] = trim( $frame->expand( $arg ) );
+						for ( $i = 0; $i < $args->getLength(); $i++ ) {
+							$funcArgs[] = trim( $frame->expand( $args->item( $i ) ) );
 						}
 						$allArgs = array_merge( $initialArgs, $funcArgs );
 					}
 
+					# Workaround for PHP bug 35229 and similar
+					if ( !is_callable( $callback ) ) {
+						throw new MWException( "Tag hook for $name is not callable\n" );
+					}
 					$result = call_user_func_array( $callback, $allArgs );
 					$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 = $result[0];
@@ -3217,7 +2850,7 @@ class Parser
 						}
 
 						// Extract flags into the local scope
-						// This allows callers to set flags such as nowiki, noparse, found, etc.
+						// This allows callers to set flags such as nowiki, found, etc.
 						extract( $result );
 					} else {
 						$text = $result;
@@ -3245,13 +2878,17 @@ class Parser
 					$wgContLang->findVariantLink($part1, $title);
 				}
 				# Do infinite loop check
-				if ( isset( $this->mTemplatePath[$titleText] ) ) {
-					$noparse = true;
-					$noargs = true;
+				if ( !$frame->loopCheck( $title ) ) {
 					$found = true;
-					$text = "[[$part1]]" . $this->insertStripItem( '<!-- WARNING: template loop detected -->' );
+					$text = "<span class=\"error\">Template loop detected: [[$titleText]]</span>";
 					wfDebug( __METHOD__.": template loop broken at '$titleText'\n" );
 				}
+				# Do recursion depth check
+				$limit = $this->mOptions->getMaxTemplateDepth();
+				if ( $frame->depth >= $limit ) {
+					$found = true;
+					$text = "<span class=\"error\">Template recursion depth limit exceeded ($limit)</span>";
+				}
 			}
 		}
 
@@ -3263,8 +2900,6 @@ class Parser
 					$text = SpecialPage::capturePath( $title );
 					if ( is_string( $text ) ) {
 						$found = true;
-						$noparse = true;
-						$noargs = true;
 						$isHTML = true;
 						$this->disableCache();
 					}
@@ -3275,7 +2910,7 @@ class Parser
 					list( $text, $title ) = $this->getTemplateDom( $title );
 					if ( $text !== false ) {
 						$found = true;
-						$isDOM = true;
+						$isChildObj = true;
 					}
 				}
 
@@ -3289,108 +2924,81 @@ class Parser
 				if ( $this->ot['html'] && !$forceRawInterwiki ) {
 					$text = $this->interwikiTransclude( $title, 'render' );
 					$isHTML = true;
-					$noparse = true;
 				} else {
 					$text = $this->interwikiTransclude( $title, 'raw' );
+					// Preprocess it like a template
+					$text = $this->preprocessToDom( $text, self::PTD_FOR_INCLUSION );
+					$isChildObj = true;
 				}
 				$found = true;
 			}
 			wfProfileOut( __METHOD__ . '-loadtpl' );
 		}
 
-		# Recursive parsing, escaping and link table handling
-		# Only for HTML output
-		if ( $nowiki && $found && ( $this->ot['html'] || $this->ot['pre'] ) ) {
-			if ( $isDOM ) {
-				$text = $frame->expand( $text );
-			}
-			$text = wfEscapeWikiText( $text );
-		} elseif ( !$this->ot['msg'] && $found ) {
-			if ( $noargs ) {
-				$newFrame = $frame->newChild();
-			} else {
-				# Clean up argument array
-				$newFrame = $frame->newChild( $args, $title );
-				# Add a new element to the templace recursion path
-				$this->mTemplatePath[$titleText] = 1;
-			}
-
-			if ( !$noparse ) {
-				if ( $isDOM ) {
-					if ( $titleText !== false && count( $newFrame->args ) == 0 ) {
-						# Expansion is eligible for the empty-frame cache
-						if ( isset( $this->mTplExpandCache[$titleText] ) ) {
-							$text = $this->mTplExpandCache[$titleText];
-						} else {
-							$text = $newFrame->expand( $text );
-							$this->mTplExpandCache[$titleText] = $text;
-						}
-					} else {
-						$text = $newFrame->expand( $text );
-					}
-				} else {
-					$text = $this->replaceVariables( $text, $newFrame );
-				}
+		# If we haven't found text to substitute by now, we're done
+		# Recover the source wikitext and return it
+		if ( !$found ) {
+			$text = $frame->virtualBracketedImplode( '{{', '|', '}}', $titleWithSpaces, $args );
+			wfProfileOut( $fname );
+			return array( 'object' => $text );
+		}
 
-				# strip woz 'ere 2004-07
+		# Expand DOM-style return values in a child frame
+		if ( $isChildObj ) {
+			# Clean up argument array
+			$newFrame = $frame->newChild( $args, $title );
 
-				# Bug 529: if the template begins with a table or block-level
-				# element, it should be treated as beginning a new line.
-				# This behaviour is somewhat controversial.
-				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
-				if ( $isDOM ) {
-					$text = $newFrame->expand( $text, PPFrame::NO_TEMPLATES );
+			if ( $nowiki ) {
+				$text = $newFrame->expand( $text, PPFrame::RECOVER_ORIG );
+			} elseif ( $titleText !== false && $newFrame->isEmpty() ) {
+				# Expansion is eligible for the empty-frame cache
+				if ( isset( $this->mTplExpandCache[$titleText] ) ) {
+					$text = $this->mTplExpandCache[$titleText];
 				} else {
-					$text = $this->replaceVariables( $text, $newFrame, true );
+					$text = $newFrame->expand( $text );
+					$this->mTplExpandCache[$titleText] = $text;
 				}
-			} elseif ( $isDOM ) {
-				$text = $frame->expand( $text );
+			} else {
+				# Uncached expansion
+				$text = $newFrame->expand( $text );
 			}
-		} elseif ( $isDOM ) {
-			$text = $frame->expand( $text, PPFrame::NO_TEMPLATES | PPFrame::NO_ARGS );
+		}
+		if ( $isLocalObj && $nowiki ) {
+			$text = $frame->expand( $text, PPFrame::RECOVER_ORIG );
+			$isLocalObj = false;
 		}
 
-		# Prune lower levels off the recursion check path
-		$this->mTemplatePath = $lastPathLevel;
-
-		if ( $found && !$this->incrementIncludeSize( 'post-expand', strlen( $text ) ) ) {
+		# Replace raw HTML by a placeholder
+		# Add a blank line preceding, to prevent it from mucking up
+		# immediately preceding headings
+		if ( $isHTML ) {
+			$text = "\n\n" . $this->insertStripItem( $text );
+		}
+		# Escape nowiki-style return values
+		elseif ( $nowiki && ( $this->ot['html'] || $this->ot['pre'] ) ) {
+			$text = wfEscapeWikiText( $text );
+		}
+		# Bug 529: if the template begins with a table or block-level
+		# element, it should be treated as beginning a new line.
+		# This behaviour is somewhat controversial.
+		elseif ( is_string( $text ) && !$piece['lineStart'] && preg_match('/^(?:{\\||:|;|#|\*)/', $text)) /*}*/{
+			$text = "\n" . $text;
+		}
+		
+		if ( is_string( $text ) && !$this->incrementIncludeSize( 'post-expand', strlen( $text ) ) ) {
 			# Error, oversize inclusion
 			$text = "[[$originalTitle]]" . 
 				$this->insertStripItem( '<!-- WARNING: template omitted, post-expand include size too large -->' );
-			$noparse = true;
-			$noargs = true;
 		}
 
-		if ( !$found ) {
-			wfProfileOut( $fname );
-			return '{{' . $frame->implode( '|', $titleWithSpaces, $args ) . '}}';
+		if ( $isLocalObj ) {
+			$ret = array( 'object' => $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 );
-			}
-			wfProfileOut( __METHOD__ . '-placeholders' );
+			$ret = array( 'text' => $text );
 		}
 
-		# Prune lower levels off the recursion check path
-		$this->mTemplatePath = $lastPathLevel;
-
-		if ( !$found ) {
-			wfProfileOut( $fname );
-			return '{{' . $frame->implode( '|', $titleWithSpaces, $args ) . '}}';
-		} else {
-			wfProfileOut( $fname );
-			return $text;
-		}
+		wfProfileOut( $fname );
+		return $ret;
 	}
 
 	/**
@@ -3418,21 +3026,7 @@ class Parser
 			return array( false, $title );
 		}
 
-		# If there are any <onlyinclude> tags, only include them
-		if ( !$this->ot['msg'] ) {
-			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>' => '' ) );
-		}
-
-		$dom = $this->preprocessToDom( $text );
-
+		$dom = $this->preprocessToDom( $text, self::PTD_FOR_INCLUSION );
 		$this->mTplDomCache[ $titleText ] = $dom;
 
 		if (! $title->equals($cacheTitle)) {
@@ -3570,30 +3164,41 @@ class Parser
 	function argSubstitution( $piece, $frame ) {
 		wfProfileIn( __METHOD__ );
 
-		$text = false;
 		$error = false;
 		$parts = $piece['parts'];
-		$argWithSpaces = $frame->expand( $piece['title'] );
-		$arg = trim( $argWithSpaces );
-
-		if ( isset( $frame->args[$arg] ) ) {
-			$text = $frame->parent->expand( $frame->args[$arg] );
-		} else if ( ( $this->ot['html'] || $this->ot['pre'] ) && $parts->length > 0 ) {
-			$text = $frame->expand( $parts->item( 0 ) );
+		$nameWithSpaces = $frame->expand( $piece['title'] );
+		$argName = trim( $nameWithSpaces );
+		$object = false;
+		$text = $frame->getArgument( $argName );
+		if (  $text === false && $parts->getLength() > 0 
+		  && ( 
+		    $this->ot['html'] 
+		    || $this->ot['pre'] 
+		    || ( $this->ot['wiki'] && $frame->isTemplate() )
+		  )
+		) {
+			# No match in frame, use the supplied default
+			$object = $parts->item( 0 )->getChildren();
 		}
 		if ( !$this->incrementIncludeSize( 'arg', strlen( $text ) ) ) {
 			$error = '<!-- WARNING: argument omitted, expansion size too large -->';
 		}
 
-		if ( $text === false ) {
-			$text = '{{{' . $frame->implode( '|', $argWithSpaces, $parts ) . '}}}';
+		if ( $text === false && $object === false ) {
+			# No match anywhere
+			$object = $frame->virtualBracketedImplode( '{{{', '|', '}}}', $nameWithSpaces, $parts );
 		}
 		if ( $error !== false ) {
 			$text .= $error;
 		}
+		if ( $object !== false ) {
+			$ret = array( 'object' => $object );
+		} else {
+			$ret = array( 'text' => $text );
+		}
 
 		wfProfileOut( __METHOD__ );
-		return $text;
+		return $ret;
 	}
 
 	/**
@@ -3601,29 +3206,29 @@ class Parser
 	 * This is the ghost of strip().
 	 *
 	 * @param array $params Associative array of parameters:
-	 *     name       DOMNode for the tag name
-	 *     attrText   DOMNode for unparsed text where tag attributes are thought to be
+	 *     name       PPNode for the tag name
+	 *     attr       PPNode for unparsed text where tag attributes are thought to be
+	 *     attributes Optional associative array of parsed attributes
 	 *     inner      Contents of extension element
 	 *     noClose    Original text did not have a close tag
 	 * @param PPFrame $frame
 	 */
 	function extensionSubstitution( $params, $frame ) {
 		global $wgRawHtml, $wgContLang;
-		static $n = 1;
 
 		$name = $frame->expand( $params['name'] );
-		$attrText = is_null( $params['attr'] ) ? null : $frame->expand( $params['attr'] );
-		$content = is_null( $params['inner'] ) ? null : $frame->expand( $params['inner'] );
+		$attrText = !isset( $params['attr'] ) ? null : $frame->expand( $params['attr'] );
+		$content = !isset( $params['inner'] ) ? null : $frame->expand( $params['inner'] );
 
-		$marker = "{$this->mUniqPrefix}-$name-" . sprintf('%08X', $n++) . $this->mMarkerSuffix;
+		$marker = "{$this->mUniqPrefix}-$name-" . sprintf('%08X', $this->mMarkerIndex++) . $this->mMarkerSuffix;
 		
 		if ( $this->ot['html'] ) {
-			if ( $name == '!--' ) {
-				return '';
-			}
 			$name = strtolower( $name );
 
-			$params = Sanitizer::decodeTagAttributes( $attrText );
+			$attributes = Sanitizer::decodeTagAttributes( $attrText );
+			if ( isset( $params['attributes'] ) ) {
+				$attributes = $attributes + $params['attributes'];
+			}
 			switch ( $name ) {
 				case 'html':
 					if( $wgRawHtml ) {
@@ -3637,30 +3242,39 @@ class Parser
 					break;
 				case 'math':
 					$output = $wgContLang->armourMath(
-						MathRenderer::renderMath( $content, $params ) );
+						MathRenderer::renderMath( $content, $attributes ) );
 					break;
 				case 'gallery':
-					$output = $this->renderImageGallery( $content, $params );
+					$output = $this->renderImageGallery( $content, $attributes );
 					break;
 				default:
 					if( isset( $this->mTagHooks[$name] ) ) {
+						# Workaround for PHP bug 35229 and similar
+						if ( !is_callable( $this->mTagHooks[$name] ) ) {
+							throw new MWException( "Tag hook for $name is not callable\n" );
+						}
 						$output = call_user_func_array( $this->mTagHooks[$name],
-							array( $content, $params, $this ) );
+							array( $content, $attributes, $this ) );
 					} else {
 						throw new MWException( "Invalid call hook $name" );
 					}
 			}
 		} else {
-			if ( $name == '!--' ) {
-				$output = '<!--' . $content . '-->';
-			} else {
-				if ( $content === null ) {
-					$output = "<$name$attrText/>";
-				} else {
-					$close = is_null( $params['close'] ) ? '' : $frame->expand( $params['close'] );
-					$output = "<$name$attrText>$content$close";
+			if ( is_null( $attrText ) ) {
+				$attrText = '';
+			}
+			if ( isset( $params['attributes'] ) ) {
+				foreach ( $params['attributes'] as $attrName => $attrValue ) {
+					$attrText .= ' ' . htmlspecialchars( $attrName ) . '="' .
+						htmlspecialchars( $attrValue ) . '"';
 				}
 			}
+			if ( $content === null ) {
+				$output = "<$name$attrText/>";
+			} else {
+				$close = is_null( $params['close'] ) ? '' : $frame->expand( $params['close'] );
+				$output = "<$name$attrText>$content$close";
+			}
 		}
 
 		if ( $name == 'html' || $name == 'nowiki' ) {
@@ -3803,6 +3417,7 @@ class Parser
 		$prevtoclevel = 0;
 		$markerRegex = "{$this->mUniqPrefix}-h-(\d+)-{$this->mMarkerSuffix}";
 		$baseTitleText = $this->mTitle->getPrefixedDBkey();
+		$tocraw = array();
 
 		foreach( $matches[3] as $headline ) {
 			$isTemplate = false;
@@ -3936,13 +3551,17 @@ class Parser
 			}
 			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 && $sectionIndex !== false ) {
-				if( $isTemplate )
-					$editlink = $sk->editSectionLinkForOther($titleText, $sectionIndex);
-				else
+				if( $isTemplate ) {
+					# Put a T flag in the section identifier, to indicate to extractSections() 
+					# that sections inside <includeonly> should be counted.
+					$editlink = $sk->editSectionLinkForOther($titleText, "T-$sectionIndex");
+				} else {
 					$editlink = $sk->editSectionLink($this->mTitle, $sectionIndex, $headlineHint);
+				}
 			} else {
 				$editlink = '';
 			}
@@ -3951,6 +3570,8 @@ class Parser
 			$headlineCount++;
 		}
 
+		$this->mOutput->setSections( $tocraw );
+
 		# Never ever show TOC if no headers
 		if( $numVisible < 1 ) {
 			$enoughToc = false;
@@ -4009,8 +3630,8 @@ class Parser
 	 */
 	function preSaveTransform( $text, &$title, $user, $options, $clearState = true ) {
 		$this->mOptions = $options;
-		$this->mTitle =& $title;
-		$this->setOutputType( OT_WIKI );
+		$this->setTitle( $title );
+		$this->setOutputType( self::OT_WIKI );
 
 		if ( $clearState ) {
 			$this->clearState();
@@ -4036,24 +3657,25 @@ class Parser
 		 * 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.
+		 *
+		 * (see also bug 12815)
 		 */
+		$ts = $this->mOptions->getTimestamp();
+		$tz = 'UTC';
 		if ( isset( $wgLocaltimezone ) ) {
+			$unixts = wfTimestamp( TS_UNIX, $ts );
 			$oldtz = getenv( 'TZ' );
 			putenv( 'TZ='.$wgLocaltimezone );
-		}
-		$d = $wgContLang->timeanddate( date( 'YmdHis' ), false, false) .
-		  ' (' . date( 'T' ) . ')';
-		if ( isset( $wgLocaltimezone ) ) {
+			$ts = date( 'YmdHis', $unixts );
+			$tz = date( 'T', $unixts );  # might vary on DST changeover!
 			putenv( 'TZ='.$oldtz );
 		}
+		$d = $wgContLang->timeanddate( $ts, false, false ) . " ($tz)";
 
 		# 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, $this->mStripState, false, array( 'gallery' ) );
-
 		# Signatures
 		$sigText = $this->getUserSig( $user );
 		$text = strtr( $text, array(
@@ -4159,7 +3781,10 @@ class Parser
 	function cleanSig( $text, $parsing = false ) {
 		if ( !$parsing ) {
 			global $wgTitle;
-			$this->startExternalParse( $wgTitle, new ParserOptions(), OT_MSG );
+			$this->clearState();
+			$this->setTitle( $wgTitle );
+			$this->mOptions = new ParserOptions;
+			$this->setOutputType = self::OT_PREPROCESS;
 		}
 
 		# FIXME: regex doesn't respect extension tags or nowiki
@@ -4171,8 +3796,8 @@ class Parser
 		$text = preg_replace( $substRegex, $substText, $text );
 		$text = $this->cleanSigInSig( $text );
 		$dom = $this->preprocessToDom( $text );
-		$frame = new PPFrame( $this );
-		$text = $frame->expand( $dom->documentElement );
+		$frame = $this->getPreprocessor()->newFrame();
+		$text = $frame->expand( $dom );
 
 		if ( !$parsing ) {
 			$text = $this->mStripState->unstripBoth( $text );
@@ -4197,7 +3822,7 @@ class Parser
 	 * @public
 	 */
 	function startExternalParse( &$title, $options, $outputType, $clearState = true ) {
-		$this->mTitle =& $title;
+		$this->setTitle( $title );
 		$this->mOptions = $options;
 		$this->setOutputType( $outputType );
 		if ( $clearState ) {
@@ -4206,16 +3831,11 @@ class Parser
 	}
 
 	/**
-	 * Transform a MediaWiki message by replacing magic variables.
-	 *
-	 * For some unknown reason, it also expands templates, but only to the 
-	 * first recursion level. This is wrong and broken, probably introduced 
-	 * accidentally during refactoring, but probably relied upon by thousands 
-	 * of users. 
+	 * Wrapper for preprocess()
 	 *
-	 * @param string $text the text to transform
+	 * @param string $text the text to preprocess
 	 * @param ParserOptions $options  options
-	 * @return string the text with variables substituted
+	 * @return string
 	 * @public
 	 */
 	function transformMsg( $text, $options ) {
@@ -4231,17 +3851,7 @@ class Parser
 		$executing = true;
 
 		wfProfileIn($fname);
-
-		if ( $wgTitle && !( $wgTitle instanceof FakeTitle ) ) {
-			$this->mTitle = $wgTitle;
-		} else {
-			$this->mTitle = Title::newFromText('msg');
-		}
-		$this->mOptions = $options;
-		$this->setOutputType( OT_MSG );
-		$this->clearState();
-		$text = $this->replaceVariables( $text );
-		$text = $this->mStripState->unstripBoth( $text );
+		$text = $this->preprocess( $text, $wgTitle, $options );
 
 		$executing = false;
 		wfProfileOut($fname);
@@ -4280,6 +3890,14 @@ class Parser
 		return $oldVal;
 	}
 
+	/**
+	 * Remove all tag hooks
+	 */
+	function clearTagHooks() {
+		$this->mTagHooks = array();
+		$this->mStripList = $this->mDefaultStripList;
+	}
+
 	/**
 	 * Create a function, e.g. {{sum:1|2|3}}
 	 * The callback function should have the form:
@@ -4291,8 +3909,6 @@ class Parser
 	 *   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
@@ -4399,9 +4015,9 @@ class Parser
 					# Not in the link cache, add it to the query
 					if ( !isset( $current ) ) {
 						$current = $ns;
-						$query =  "SELECT page_id, page_namespace, page_title";
+						$query =  "SELECT page_id, page_namespace, page_title, page_is_redirect";
 						if ( $threshold > 0 ) {
-							$query .= ', page_len, page_is_redirect';
+							$query .= ', page_len';
 						}
 						$query .= " FROM $page WHERE (page_namespace=$ns AND page_title IN(";
 					} elseif ( $current != $ns ) {
@@ -4490,9 +4106,9 @@ class Parser
 					// construct query
 					$titleClause = $linkBatch->constructSet('page', $dbr);
 
-					$variantQuery =  "SELECT page_id, page_namespace, page_title";
+					$variantQuery =  "SELECT page_id, page_namespace, page_title, page_is_redirect";
 					if ( $threshold > 0 ) {
-						$variantQuery .= ', page_len, page_is_redirect';
+						$variantQuery .= ', page_len';
 					}
 
 					$variantQuery .= " FROM $page WHERE $titleClause";
@@ -4727,13 +4343,7 @@ class Parser
 				$label = '';
 			}
 
-			$pout = $this->parse( $label,
-				$this->mTitle,
-				$this->mOptions,
-				false, // Strip whitespace...?
-				false  // Don't clear state!
-			);
-			$html = $pout->getText();
+			$html = $this->recursiveTagParse( trim( $label ) );
 
 			$ig->add( $nt, $html );
 
@@ -4941,52 +4551,67 @@ class Parser
 	 *
 	 * 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. If the section is 
-	 *                 not found, $mode=get will return $newtext, and 
-	 *                 $mode=replace will return $text.
-	 * @param $mode One of "get" or "replace"
-	 * @param $newText Replacement text for section data.
+	 * @param string $text Page wikitext
+	 * @param string $section A section identifier string of the form:
+	 *   <flag1> - <flag2> - ... - <section number>
+	 *
+	 * Currently the only recognised flag is "T", which means the target section number
+	 * was derived during a template inclusion parse, in other words this is a template 
+	 * section edit link. If no flags are given, it was an ordinary section edit link. 
+	 * This flag is required to avoid a section numbering mismatch when a section is 
+	 * enclosed by <includeonly> (bug 6563).
+	 *
+	 * The section number 0 pulls the text before the first heading; other numbers will 
+	 * pull the given section along with its lower-level subsections. If the section is 
+	 * not found, $mode=get will return $newtext, and $mode=replace will return $text.
+	 *
+	 * @param string $mode One of "get" or "replace"
+	 * @param string $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='' ) {
+		global $wgTitle;
 		$this->clearState();
+		$this->setTitle( $wgTitle ); // not generally used but removes an ugly failure mode
 		$this->mOptions = new ParserOptions;
-		$this->setOutputType( OT_WIKI );
-		$curIndex = 0;
+		$this->setOutputType( self::OT_WIKI );
 		$outText = '';
-		$frame = new PPFrame( $this );
-
+		$frame = $this->getPreprocessor()->newFrame();
+
+		// Process section extraction flags
+		$flags = 0;
+		$sectionParts = explode( '-', $section );
+		$sectionIndex = array_pop( $sectionParts );
+		foreach ( $sectionParts as $part ) {
+			if ( $part == 'T' ) {
+				$flags |= self::PTD_FOR_INCLUSION;
+			}
+		}
 		// Preprocess the text
-		$dom = $this->preprocessToDom( $text );
-		$root = $dom->documentElement;
+		$root = $this->preprocessToDom( $text, $flags );
 
 		// <h> nodes indicate section breaks
 		// They can only occur at the top level, so we can find them by iterating the root's children
-		$node = $root->firstChild;
+		$node = $root->getFirstChild();
 
 		// Find the target section
-		if ( $section == 0 ) {
+		if ( $sectionIndex == 0 ) {
 			// Section zero doesn't nest, level=big
 			$targetLevel = 1000;
 		} else {
-			while ( $node ) {
-				if ( $node->nodeName == 'h' ) {
-					if ( $curIndex + 1 == $section ) {
+            while ( $node ) {
+                if ( $node->getName() == 'h' ) {
+                    $bits = $node->splitHeading();
+					if ( $bits['i'] == $sectionIndex ) {
+        				$targetLevel = $bits['level'];
 						break;
 					}
-					$curIndex++;
 				}
 				if ( $mode == 'replace' ) {
 					$outText .= $frame->expand( $node, PPFrame::RECOVER_ORIG );
 				}
-				$node = $node->nextSibling;
-			}
-			if ( $node ) {
-				$targetLevel = $node->getAttribute( 'level' );
+				$node = $node->getNextSibling();
 			}
 		}
 
@@ -5001,17 +4626,17 @@ class Parser
 
 		// Find the end of the section, including nested sections
 		do {
-			if ( $node->nodeName == 'h' ) {
-				$curIndex++;
-				$curLevel = $node->getAttribute( 'level' );
-				if ( $curIndex != $section && $curLevel <= $targetLevel ) {
+			if ( $node->getName() == 'h' ) {
+				$bits = $node->splitHeading();
+				$curLevel = $bits['level'];
+				if ( $bits['i'] != $sectionIndex && $curLevel <= $targetLevel ) {
 					break;
 				}
 			}
 			if ( $mode == 'get' ) {
 				$outText .= $frame->expand( $node, PPFrame::RECOVER_ORIG );
 			}
-			$node = $node->nextSibling;
+			$node = $node->getNextSibling();
 		} while ( $node );
 		
 		// Write out the remainder (in replace mode only)
@@ -5022,7 +4647,7 @@ class Parser
 			$outText .= $newText . "\n\n";
 			while ( $node ) {
 				$outText .= $frame->expand( $node, PPFrame::RECOVER_ORIG );
-				$node = $node->nextSibling;
+				$node = $node->getNextSibling();
 			}
 		}
 
@@ -5041,9 +4666,9 @@ class Parser
 	 *
 	 * 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
+	 * @param string $text text to look in
+	 * @param string $section section identifier
+	 * @param string $deftext default to return if section is not found
 	 * @return string text of the requested section
 	 */
 	public function getSection( $text, $section, $deftext='' ) {
@@ -5165,29 +4790,64 @@ class Parser
 		return $text;
 	}
 
+	function srvus( $text ) {
+		return $this->testSrvus( $text, $this->mOutputType );
+	}
+
 	/**
 	 * strip/replaceVariables/unstrip for preprocessor regression testing
 	 */
-	function srvus( $text ) {
+	function testSrvus( $text, $title, $options, $outputType = self::OT_HTML ) {
+		$this->clearState();
+		if ( ! ( $title instanceof Title ) ) {
+			$title = Title::newFromText( $title );
+		}
+		$this->mTitle = $title;
+		$this->mOptions = $options;
+		$this->setOutputType( $outputType );
 		$text = $this->replaceVariables( $text );
 		$text = $this->mStripState->unstripBoth( $text );
+		$text = Sanitizer::removeHTMLtags( $text );
 		return $text;
 	}
-}
 
-/**
- * @todo document, briefly.
- * @addtogroup Parser
- */
-class OnlyIncludeReplacer {
-	var $output = '';
+	function testPst( $text, $title, $options ) {
+		global $wgUser;
+		if ( ! ( $title instanceof Title ) ) {
+			$title = Title::newFromText( $title );
+		}
+		return $this->preSaveTransform( $text, $title, $wgUser, $options );
+	}
 
-	function replace( $matches ) { 
-		if ( substr( $matches[1], -1 ) == "\n" ) {
-			$this->output .= substr( $matches[1], 0, -1 );
-		} else {
-			$this->output .= $matches[1];
+	function testPreprocess( $text, $title, $options ) {
+		if ( ! ( $title instanceof Title ) ) {
+			$title = Title::newFromText( $title );
 		}
+		return $this->testSrvus( $text, $title, $options, self::OT_PREPROCESS );
+	}
+
+	function markerSkipCallback( $s, $callback ) {
+		$i = 0;
+		$out = '';
+		while ( $i < strlen( $s ) ) {
+			$markerStart = strpos( $s, $this->mUniqPrefix, $i );
+			if ( $markerStart === false ) {
+				$out .= call_user_func( $callback, substr( $s, $i ) );
+				break;
+			} else {
+				$out .= call_user_func( $callback, substr( $s, $i, $markerStart - $i ) );
+				$markerEnd = strpos( $s, $this->mMarkerSuffix, $markerStart );
+				if ( $markerEnd === false ) {
+					$out .= substr( $s, $markerStart );
+					break;
+				} else {
+					$markerEnd += strlen( $this->mMarkerSuffix );
+					$out .= substr( $s, $markerStart, $markerEnd - $markerStart );
+					$i = $markerEnd;
+				}
+			}
+		}
+		return $out;
 	}
 }
 
@@ -5236,236 +4896,18 @@ class StripState {
 }
 
 /**
- * An expansion frame, used as a context to expand the result of preprocessToDom()
+ * @todo document, briefly.
+ * @addtogroup Parser
  */
-class PPFrame {
-	var $parser, $title;
-
-	const NO_ARGS = 1;
-	const NO_TEMPLATES = 2;
-	const RECOVER_ORIG = 3;
-
-	/**
-	 * Construct a new preprocessor frame.
-	 * @param Parser $parser The parent parser
-	 * @param Title $title The context title, or false if there isn't one
-	 */
-	function __construct( $parser ) {
-		$this->parser = $parser;
-		$this->title = $parser->mTitle;
-	}
-
-	/**
-	 * Create a new child frame
-	 * $args is optionally a DOMNodeList containing the template arguments
-	 */
-	function newChild( $args = false, $title = false ) {
-		$assocArgs = array();
-		if ( $title === false ) {
-			$title = $this->title;
-		}
-		if ( $args !== false ) {
-			$xpath = false;
-			foreach ( $args as $arg ) {
-				if ( !$xpath ) {
-					$xpath = new DOMXPath( $arg->ownerDocument );
-				}
-
-				$nameNodes = $xpath->query( 'name', $arg );
-				if ( $nameNodes->item( 0 )->hasAttributes() ) {
-					// Numbered parameter
-					$name = $nameNodes->item( 0 )->attributes->getNamedItem( 'index' )->textContent;
-				} else {
-					// Named parameter
-					$name = $this->expand( $nameNodes->item( 0 ) );
-				}
-
-				$value = $xpath->query( 'value', $arg );
-				$assocArgs[$name] = $value->item( 0 );
-			}
-		}
-		return new PPTemplateFrame( $this->parser, $this, $assocArgs, $title );
-	}
-
-	/**
-	 * Expand a DOMNode describing a preprocessed document into plain wikitext, 
-	 * using the current context
-	 * @param $root the node
-	 */
-	function expand( $root, $flags = 0 ) {
-		if ( is_string( $root ) ) {
-			return $root;
-		}
-
-		if ( $this->parser->ot['html'] 
-			&& ++$this->parser->mPPNodeCount > $this->parser->mOptions->mMaxPPNodeCount ) 
-		{
-			return $this->parser->insertStripItem( '<!-- node-count limit exceeded -->' );
-		}
+class OnlyIncludeReplacer {
+	var $output = '';
 
-		if ( is_array( $root ) ) {
-			$s = '';
-			foreach ( $root as $node ) {
-				$s .= $this->expand( $node, $flags );
-			}
-		} elseif ( $root instanceof DOMNodeList ) {
-			$s = '';
-			foreach ( $root as $node ) {
-				$s .= $this->expand( $node, $flags );
-			}
-		} elseif ( $root instanceof DOMNode ) {
-			if ( $root->nodeType == XML_TEXT_NODE ) {
-				$s = $root->nodeValue;
-			} elseif ( $root->nodeName == 'template' ) {
-				# Double-brace expansion
-				$xpath = new DOMXPath( $root->ownerDocument );
-				$titles = $xpath->query( 'title', $root );
-				$title = $titles->item( 0 );
-				$parts = $xpath->query( 'part', $root );
-				if ( $flags & self::NO_TEMPLATES ) {
-					$s = '{{' . $this->implodeWithFlags( '|', $flags, $title, $parts ) . '}}';
-				} else {
-					$lineStart = $root->getAttribute( 'lineStart' );
-					$params = array( 
-						'title' => $title, 
-						'parts' => $parts, 
-						'lineStart' => $lineStart,
-						'text' => 'FIXME' );
-					$s = $this->parser->braceSubstitution( $params, $this );
-				}
-			} elseif ( $root->nodeName == 'tplarg' ) {
-				# Triple-brace expansion
-				$xpath = new DOMXPath( $root->ownerDocument );
-				$titles = $xpath->query( 'title', $root );
-				$title = $titles->item( 0 );
-				$parts = $xpath->query( 'part', $root );
-				if ( $flags & self::NO_ARGS || $this->parser->ot['msg'] ) {
-					$s = '{{{' . $this->implodeWithFlags( '|', $flags, $title, $parts ) . '}}}';
-				} else {
-					$params = array( 'title' => $title, 'parts' => $parts, 'text' => 'FIXME' );
-					$s = $this->parser->argSubstitution( $params, $this );
-				}
-			} elseif ( $root->nodeName == 'ext' ) {
-				# Extension tag
-				$xpath = new DOMXPath( $root->ownerDocument );
-				$names = $xpath->query( 'name', $root );
-				$attrs = $xpath->query( 'attr', $root );
-				$inners = $xpath->query( 'inner', $root );
-				$closes = $xpath->query( 'close', $root );
-				$params = array(
-					'name' => $names->item( 0 ),
-					'attr' => $attrs->length > 0 ? $attrs->item( 0 ) : null,
-					'inner' => $inners->length > 0 ? $inners->item( 0 ) : null,
-					'close' => $closes->length > 0 ? $closes->item( 0 ) : null,
-				);
-				$s = $this->parser->extensionSubstitution( $params, $this );
-			} elseif ( $root->nodeName == 'h' ) {
-				# Heading
-				$s = $this->expand( $root->childNodes, $flags );
-
-				if ( $this->parser->ot['html'] ) {
-					# Insert heading index marker
-					$headingIndex = $root->getAttribute( 'i' );
-					$titleText = $this->title->getPrefixedDBkey();
-					$this->parser->mHeadings[] = array( $titleText, $headingIndex );
-					$serial = count( $this->parser->mHeadings ) - 1;
-					$marker = "{$this->parser->mUniqPrefix}-h-$serial-{$this->parser->mMarkerSuffix}";
-					$count = $root->getAttribute( 'level' );
-					$s = substr( $s, 0, $count ) . $marker . substr( $s, $count );
-					$this->parser->mStripState->general->setPair( $marker, '' );
-				}
-			} else {
-				# Generic recursive expansion
-				$s = '';
-				for ( $node = $root->firstChild; $node; $node = $node->nextSibling ) {
-					if ( $node->nodeType == XML_TEXT_NODE ) {
-						$s .= $node->nodeValue;
-					} elseif ( $node->nodeType == XML_ELEMENT_NODE ) {
-						$s .= $this->expand( $node, $flags );
-					}
-				}
-			}
+	function replace( $matches ) { 
+		if ( substr( $matches[1], -1 ) == "\n" ) {
+			$this->output .= substr( $matches[1], 0, -1 );
 		} else {
-			throw new MWException( __METHOD__.': Invalid parameter type' );
-		}
-		return $s;
-	}
-
-	function implodeWithFlags( $sep, $flags /*, ... */ ) {
-		$args = array_slice( func_get_args(), 2 );
-
-		$first = true;
-		$s = '';
-		foreach ( $args as $root ) {
-			if ( !is_array( $root ) && !( $root instanceof DOMNodeList ) ) {
-				$root = array( $root );
-			}
-			foreach ( $root as $node ) {
-				if ( $first ) {
-					$first = false;
-				} else {
-					$s .= $sep;
-				}
-				$s .= $this->expand( $node, $flags );
-			}
-		}
-		return $s;
-	}
-
-	function implode( $sep /*, ... */ ) {
-		$args = func_get_args();
-		$args = array_merge( array_slice( $args, 0, 1 ), array( 0 ), array_slice( $args, 1 ) );
-		return call_user_func_array( array( $this, 'implodeWithFlags' ), $args );
-	}
-
-	/**
-	 * Split an <arg> or <template> node into a three-element array: 
-	 *    DOMNode name, string index and DOMNode value
-	 */
-	function splitBraceNode( $node ) {
-		$xpath = new DOMXPath( $arg->ownerDocument );
-		$names = $xpath->query( 'name', $node );
-		$values = $xpath->query( 'value', $node );
-		if ( !$names->length || !$values->length ) {
-			throw new MWException( 'Invalid brace node passed to ' . __METHOD__ );
-		}
-		$name = $names->item( 0 );
-		$index = $name->getAttribute( 'index' );
-		return array( $name, $index, $values->item( 0 ) );
-	}
-
-	function __toString() {
-		return 'frame{}';
-	}
-}
-
-/**
- * Expansion frame with template arguments
- */
-class PPTemplateFrame extends PPFrame {
-	public $parser, $args, $parent, $serial;
-
-	function __construct( $parser, $parent = false, $args = array(), $title = false ) {
-		$this->parser = $parser;
-		$this->parent = $parent;
-		$this->args = $args;
-		$this->title = $title;
-	}
-
-	function __toString() {
-		$s = 'tplframe{';
-		$first = true;
-		foreach ( $this->args as $name => $value ) {
-			if ( $first ) {
-				$first = false;
-			} else {
-				$s .= ', ';
-			}
-			$s .= "\"$name\":\"" . 
-				str_replace( '"', '\\"', $value->ownerDocument->saveXML( $value ) ) . '"';
+			$this->output .= $matches[1];
 		}
-		$s .= '}';
-		return $s;
 	}
 }