* Enable category names to be written in variants (use single linkbatch for both...
[lhc/web/wiklou.git] / includes / Parser.php
index d217f1e..ad39cbd 100644 (file)
@@ -62,13 +62,15 @@ define( 'MW_COLON_STATE_COMMENTDASHDASH', 7 );
  * Processes wiki markup
  *
  * <pre>
- * There are three main entry points into the Parser class:
+ * There are four 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
  *
  * Globals used:
  *    objects:   $wgLang, $wgContLang
@@ -78,7 +80,7 @@ define( 'MW_COLON_STATE_COMMENTDASHDASH', 7 );
  * settings:
  *  $wgUseTex*, $wgUseDynamicDates*, $wgInterwikiMagic*,
  *  $wgNamespacesWithSubpages, $wgAllowExternalImages*,
- *  $wgLocaltimezone, $wgAllowSpecialInclusion*, 
+ *  $wgLocaltimezone, $wgAllowSpecialInclusion*,
  *  $wgMaxArticleSize*
  *
  *  * only within ParserOptions
@@ -95,7 +97,7 @@ class Parser
        var $mTagHooks, $mFunctionHooks, $mFunctionSynonyms, $mVariables;
 
        # Cleared with clearState():
-       var $mOutput, $mAutonumber, $mDTopen, $mStripState = array();
+       var $mOutput, $mAutonumber, $mDTopen, $mStripState;
        var $mIncludeCount, $mArgStack, $mLastSection, $mInPre;
        var $mInterwikiLinkHolders, $mLinkHolders, $mUniqPrefix;
        var $mIncludeSizes;
@@ -110,7 +112,9 @@ class Parser
                $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
+               $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  
 
        /**#@-*/
 
@@ -139,6 +143,7 @@ class Parser
 
                $this->setHook( 'pre', array( $this, 'renderPreTag' ) );
 
+               $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 );
@@ -161,6 +166,7 @@ class Parser
                $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' ) );
 
                if ( $wgAllowDisplayTitle ) {
                        $this->setFunctionHook( 'displaytitle', array( 'CoreParserFunctions', 'displaytitle' ), SFH_NO_HASH );
@@ -168,12 +174,11 @@ class Parser
                if ( $wgAllowSlowParserFunctions ) {
                        $this->setFunctionHook( 'pagesinnamespace', array( 'CoreParserFunctions', 'pagesinnamespace' ), SFH_NO_HASH );
                }
-               
-               $this->initialiseVariables();
 
+               $this->initialiseVariables();
                $this->mFirstCall = false;
                wfProfileOut( __METHOD__ );
-       }               
+       }
 
        /**
         * Clear Parser state
@@ -190,7 +195,7 @@ class Parser
                $this->mLastSection = '';
                $this->mDTopen = false;
                $this->mIncludeCount = array();
-               $this->mStripState = array();
+               $this->mStripState = new StripState;
                $this->mArgStack = array();
                $this->mInPre = false;
                $this->mInterwikiLinkHolders = array(
@@ -204,7 +209,7 @@ class Parser
                        'texts' => array(),
                        'titles' => array()
                );
-               $this->mRevisionId = null;
+               $this->mRevisionTimestamp = $this->mRevisionId = null;
                
                /**
                 * Prefix for temporary replacement strings for the multipass parser.
@@ -271,7 +276,8 @@ class Parser
                 */
 
                global $wgUseTidy, $wgAlwaysUseTidy, $wgContLang;
-               $fname = 'Parser::parse';
+               $fname = 'Parser::parse-' . wfGetCaller();
+               wfProfileIn( __METHOD__ );
                wfProfileIn( $fname );
 
                if ( $clearState ) {
@@ -281,22 +287,17 @@ class Parser
                $this->mOptions = $options;
                $this->mTitle =& $title;
                $oldRevisionId = $this->mRevisionId;
+               $oldRevisionTimestamp = $this->mRevisionTimestamp;
                if( $revid !== null ) {
                        $this->mRevisionId = $revid;
+                       $this->mRevisionTimestamp = null;
                }
                $this->setOutputType( OT_HTML );
-
-               //$text = $this->strip( $text, $this->mStripState );
-               // VOODOO MAGIC FIX! Sometimes the above segfaults in PHP5.
-               $x =& $this->mStripState;
-
-               wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$x ) );
-               $text = $this->strip( $text, $x );
-               wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$x ) );
-
+               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->unstrip( $text, $this->mStripState );
+               $text = $this->mStripState->unstripGeneral( $text );
 
                # Clean up special characters, only run once, next-to-last before doBlockLevels
                $fixtags = array(
@@ -319,7 +320,7 @@ class Parser
                # Side-effects: this calls $this->mOutput->setTitleText()
                $text = $wgContLang->parserConvert( $text, $this );
 
-               $text = $this->unstripNoWiki( $text, $this->mStripState );
+               $text = $this->mStripState->unstripNoWiki( $text );
 
                wfRunHooks( 'ParserBeforeTidy', array( &$this, &$text ) );
 
@@ -369,7 +370,9 @@ class Parser
                }
                $this->mOutput->setText( $text );
                $this->mRevisionId = $oldRevisionId;
+               $this->mRevisionTimestamp = $oldRevisionTimestamp;
                wfProfileOut( $fname );
+               wfProfileOut( __METHOD__ );
 
                return $this->mOutput;
        }
@@ -380,10 +383,9 @@ class Parser
         */
        function recursiveTagParse( $text ) {
                wfProfileIn( __METHOD__ );
-               $x =& $this->mStripState;
-               wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$x ) );
-               $text = $this->strip( $text, $x );
-               wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$x ) );
+               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;
@@ -399,16 +401,14 @@ class Parser
                $this->setOutputType( OT_PREPROCESS );
                $this->mOptions = $options;
                $this->mTitle = $title;
-               $x =& $this->mStripState;
-               wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$x ) );
-               $text = $this->strip( $text, $x );
-               wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$x ) );
+               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->unstrip( $text, $x );
-               $text = $this->unstripNowiki( $text, $x );
+               $text = $this->mStripState->unstripBoth( $text );
                wfProfileOut( __METHOD__ );
                return $text;
        }
@@ -502,7 +502,7 @@ class Parser
                                        $text = $q[2];
                                }
                        }
-                       
+
                        $matches[$marker] = array( $element,
                                $content,
                                Sanitizer::decodeTagAttributes( $attributes ),
@@ -515,25 +515,27 @@ class Parser
         * 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()
-        * If the $state is already a valid strip state, it adds to the state
+        *
+        * @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 () ) {
+       function strip( $text, $state, $stripcomments = false , $dontstrip = array () ) {
+               global $wgContLang;
                wfProfileIn( __METHOD__ );
                $render = ($this->mOutputType == OT_HTML);
 
                $uniq_prefix = $this->mUniqPrefix;
-               $commentState = array();
-               
+               $commentState = new ReplacementArray;
+
                $elements = array_merge(
                        array( 'nowiki', 'gallery' ),
                        array_keys( $this->mTagHooks ) );
@@ -544,13 +546,13 @@ class Parser
                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 = Parser::extractTagsAndParams( $elements, $text, $matches, $uniq_prefix );
 
@@ -577,10 +579,10 @@ class Parser
                                        }
                                        // Shouldn't happen otherwise. :)
                                case 'nowiki':
-                                       $output = wfEscapeHTMLTagsOnly( $content );
+                                       $output = Xml::escapeTagsOnly( $content );
                                        break;
                                case 'math':
-                                       $output = MathRenderer::renderMath( $content );
+                                       $output = $wgContLang->armourMath( MathRenderer::renderMath( $content ) );
                                        break;
                                case 'gallery':
                                        $output = $this->renderImageGallery( $content, $params );
@@ -599,16 +601,16 @@ class Parser
                                $output = $tag;
                        }
 
-                       // Unstrip the output, because unstrip() is no longer recursive so 
+                       // Unstrip the output, because unstrip() is no longer recursive so
                        // it won't do it itself
-                       $output = $this->unstrip( $output, $state );
+                       $output = $state->unstripBoth( $output );
 
                        if( !$stripcomments && $element == '!--' ) {
-                               $commentState[$marker] = $output;
+                               $commentState->setPair( $marker, $output );
                        } elseif ( $element == 'html' || $element == 'nowiki' ) {
-                               $state['nowiki'][$marker] = $output;
+                               $state->nowiki->setPair( $marker, $output );
                        } else {
-                               $state['general'][$marker] = $output;
+                               $state->general->setPair( $marker, $output );
                        }
                }
 
@@ -618,7 +620,7 @@ class Parser
                # a comment.)
                if ( !$stripcomments ) {
                        // Put them all back and forget them
-                       $text = strtr( $text, $commentState );
+                       $text = $commentState->replace( $text );
                }
 
                wfProfileOut( __METHOD__ );
@@ -630,35 +632,27 @@ class Parser
         *
         * always call unstripNoWiki() after this one
         * @private
+        * @deprecated use $this->mStripState->unstrip()
         */
-       function unstrip( $text, &$state ) {
-               if ( !isset( $state['general'] ) ) {
-                       return $text;
-               }
-
-               wfProfileIn( __METHOD__ );
-               # TODO: good candidate for FSS
-               $text = strtr( $text, $state['general'] );
-               wfProfileOut( __METHOD__ );
-               return $text;
+       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 ) {
-               if ( !isset( $state['nowiki'] ) ) {
-                       return $text;
-               }
+       function unstripNoWiki( $text, $state ) {
+               return $state->unstripNoWiki( $text );
+       }
 
-               wfProfileIn( __METHOD__ );
-               # TODO: good candidate for FSS
-               $text = strtr( $text, $state['nowiki'] );
-               wfProfileOut( __METHOD__ );
-               
-               return $text;
+       /**
+        * @deprecated use $this->mStripState->unstripBoth()
+        */
+       function unstripForHTML( $text ) {
+               return $this->mStripState->unstripBoth( $text );
        }
 
        /**
@@ -670,10 +664,7 @@ class Parser
         */
        function insertStripItem( $text, &$state ) {
                $rnd = $this->mUniqPrefix . '-item' . Parser::getRandomString();
-               if ( !$state ) {
-                       $state = array();
-               }
-               $state['general'][$rnd] = $text;
+               $state->general->setPair( $rnd, $text );
                return $rnd;
        }
 
@@ -790,135 +781,191 @@ class Parser
         *
         * @private
         */
-       function doTableStuff ( $t ) {
+       function doTableStuff ( $text ) {
                $fname = 'Parser::doTableStuff';
                wfProfileIn( $fname );
 
-               $t = explode ( "\n" , $t ) ;
-               $td = array () ; # Is currently a td tag open?
-               $ltd = array () ; # Was it TD or TH?
-               $tr = array () ; # Is currently a tr tag open?
-               $ltr = array () ; # tr attributes
-               $has_opened_tr = array(); # Did this table open a <tr> element?
-               $indent_level = 0; # indent level of the table
-               foreach ( $t AS $k => $x )
+               $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 )
                {
-                       $x = trim ( $x ) ;
-                       $fc = substr ( $x , 0 , 1 ) ;
-                       if ( preg_match( '/^(:*)\{\|(.*)$/', $x, $matches ) ) {
+                       $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->unstripForHTML( $matches[2] );
+                               $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 );
 
-                               $t[$k] = str_repeat( '<dl><dd>', $indent_level ) .
-                                       '<table' . Sanitizer::fixTagAttributes ( $attributes, 'table' ) . '>' ;
-                               array_push ( $td , false ) ;
-                               array_push ( $ltd , '' ) ;
-                               array_push ( $tr , false ) ;
-                               array_push ( $ltr , '' ) ;
-                               array_push ( $has_opened_tr, false );
-                       }
-                       else if ( count ( $td ) == 0 ) { } # Don't do any of the following
-                       else if ( '|}' == substr ( $x , 0 , 2 ) ) {
-                               $z = "</table>" . substr ( $x , 2);
-                               $l = array_pop ( $ltd ) ;
-                               if ( !array_pop ( $has_opened_tr ) ) $z = "<tr><td></td></tr>" . $z ;
-                               if ( array_pop ( $tr ) ) $z = '</tr>' . $z ;
-                               if ( array_pop ( $td ) ) $z = '</'.$l.'>' . $z ;
-                               array_pop ( $ltr ) ;
-                               $t[$k] = $z . str_repeat( '</dd></dl>', $indent_level );
-                       }
-                       else if ( '|-' == substr ( $x , 0 , 2 ) ) { # Allows for |---------------
-                               $x = substr ( $x , 1 ) ;
-                               while ( $x != '' && substr ( $x , 0 , 1 ) == '-' ) $x = substr ( $x , 1 ) ;
-                               $z = '' ;
-                               $l = array_pop ( $ltd ) ;
+                               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 ) ) $z = '</tr>' . $z ;
-                               if ( array_pop ( $td ) ) $z = '</'.$l.'>' . $z ;
-                               array_pop ( $ltr ) ;
-                               $t[$k] = $z ;
-                               array_push ( $tr , false ) ;
-                               array_push ( $td , false ) ;
-                               array_push ( $ltd , '' ) ;
-                               $attributes = $this->unstripForHTML( $x );
-                               array_push ( $ltr , Sanitizer::fixTagAttributes ( $attributes, '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 ( '|' == $fc || '!' == $fc || '|+' == substr ( $x , 0 , 2 ) ) { # Caption
-                               # $x is a table row
-                               if ( '|+' == substr ( $x , 0 , 2 ) ) {
-                                       $fc = '+' ;
-                                       $x = substr ( $x , 1 ) ;
+                       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 );
                                }
-                               $after = substr ( $x , 1 ) ;
-                               if ( $fc == '!' ) $after = str_replace ( '!!' , '||' , $after ) ;
 
                                // Split up multiple cells on the same line.
-                               // FIXME: This can result in improper nesting of tags processed
+                               // FIXME : This can result in improper nesting of tags processed
                                // by earlier parser steps, but should avoid splitting up eg
                                // attribute values containing literal "||".
-                               $after = wfExplodeMarkup( '||', $after );
+                               $cells = StringUtils::explodeMarkup( '||' , $line );
 
-                               $t[$k] = '' ;
+                               $lines[$key] = '';
 
-                               # Loop through each table cell
-                               foreach ( $after AS $theline )
+                               // Loop through each table cell
+                               foreach ( $cells as $cell )
                                {
-                                       $z = '' ;
-                                       if ( $fc != '+' )
+                                       $previous = '';
+                                       if ( $first_character != '+' )
                                        {
-                                               $tra = array_pop ( $ltr ) ;
-                                               if ( !array_pop ( $tr ) ) $z = '<tr'.$tra.">\n" ;
-                                               array_push ( $tr , true ) ;
-                                               array_push ( $ltr , '' ) ;
+                                               $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 ) ;
+                                               array_push ( $has_opened_tr , true );
+                                       }
+
+                                       $last_tag = array_pop ( $last_tag_history );
+
+                                       if ( array_pop ( $td_history ) ) {
+                                               $previous = "</{$last_tag}>{$previous}";
                                        }
 
-                                       $l = array_pop ( $ltd ) ;
-                                       if ( array_pop ( $td ) ) $z = '</'.$l.'>' . $z ;
-                                       if ( $fc == '|' ) $l = 'td' ;
-                                       else if ( $fc == '!' ) $l = 'th' ;
-                                       else if ( $fc == '+' ) $l = 'caption' ;
-                                       else $l = '' ;
-                                       array_push ( $ltd , $l ) ;
-
-                                       # Cell parameters
-                                       $y = explode ( '|' , $theline , 2 ) ;
-                                       # Note that a '|' inside an invalid link should not
-                                       # be mistaken as delimiting cell parameters
-                                       if ( strpos( $y[0], '[[' ) !== false ) {
-                                               $y = array ($theline);
+                                       if ( $first_character == '|' ) {
+                                               $last_tag = 'td';
+                                       } else if ( $first_character == '!' ) {
+                                               $last_tag = 'th';
+                                       } else if ( $first_character == '+' ) {
+                                               $last_tag = 'caption';
+                                       } else {
+                                               $last_tag = '';
                                        }
-                                       if ( count ( $y ) == 1 )
-                                               $y = "{$z}<{$l}>{$y[0]}" ;
+
+                                       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->unstripForHTML( $y[0] );
-                                               $y = "{$z}<{$l}".Sanitizer::fixTagAttributes($attributes, $l).">{$y[1]}" ;
+                                               $attributes = $this->mStripState->unstripBoth( $cell_data[0] );
+                                               $attributes = Sanitizer::fixTagAttributes( $attributes , $last_tag );
+                                               $cell = "{$previous}<{$last_tag}{$attributes}>{$cell_data[1]}";
                                        }
-                                       $t[$k] .= $y ;
-                                       array_push ( $td , true ) ;
+
+                                       $lines[$key] .= $cell;
+                                       array_push ( $td_history , true );
                                }
                        }
                }
 
-               # Closing open td, tr && table
-               while ( count ( $td ) > 0 )
+               // Closing open td, tr && table
+               while ( count ( $td_history ) > 0 )
                {
-                       $l = array_pop ( $ltd ) ;
-                       if ( array_pop ( $td ) ) $t[] = '</td>' ;
-                       if ( array_pop ( $tr ) ) $t[] = '</tr>' ;
-                       if ( !array_pop ( $has_opened_tr ) ) $t[] = "<tr><td></td></tr>" ;
-                       $t[] = '</table>' ;
+                       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 = '';
                }
 
-               $t = implode ( "\n" , $t ) ;
-               # special case: don't return empty table
-               if($t == "<table>\n<tr><td></td></tr>\n</table>")
-                       $t = '';
                wfProfileOut( $fname );
-               return $t ;
+
+               return $output;
        }
 
        /**
@@ -934,7 +981,7 @@ class Parser
                wfProfileIn( $fname );
 
                # Hook to suspend the parser in this state
-               if ( !wfRunHooks( 'ParserBeforeInternalParse', array( &$this, &$text, &$x ) ) ) {
+               if ( !wfRunHooks( 'ParserBeforeInternalParse', array( &$this, &$text, &$this->mStripState ) ) ) {
                        wfProfileOut( $fname );
                        return $text ;
                }
@@ -942,7 +989,7 @@ class Parser
                # Remove <noinclude> tags and <includeonly> sections
                $text = strtr( $text, array( '<onlyinclude>' => '' , '</onlyinclude>' => '' ) );
                $text = strtr( $text, array( '<noinclude>' => '', '</noinclude>' => '') );
-               $text = preg_replace( '/<includeonly>.*?<\/includeonly>/s', '', $text );
+               $text = StringUtils::delimiterReplace( '<includeonly>', '</includeonly>', '', $text );
 
                $text = Sanitizer::removeHTMLtags( $text, array( &$this, 'attributeStripCallback' ) );
 
@@ -986,15 +1033,15 @@ class Parser
         */
        function &doMagicLinks( &$text ) {
                wfProfileIn( __METHOD__ );
-               $text = preg_replace_callback( 
+               $text = preg_replace_callback(
                        '!(?:                           # Start cases
                            <a.*?</a> |                 # Skip link text
                            <.*?> |                     # Skip stuff inside HTML elements
                            (?:RFC|PMID)\s+([0-9]+) |   # RFC or PMID, capture number as m[1]
-                           ISBN\s+([0-9Xx-]+)          # ISBN, capture number as m[2]
+                           ISBN\s+(\b[0-9Xx\ \-]+)     # ISBN, capture number as m[2]
                        )!x', array( &$this, 'magicLinkCallback' ), $text );
                wfProfileOut( __METHOD__ );
-               return $text; 
+               return $text;
        }
 
        function magicLinkCallback( $m ) {
@@ -1003,12 +1050,12 @@ class Parser
                        return $m[0];
                } elseif ( substr( $m[0], 0, 4 ) == 'ISBN' ) {
                        $isbn = $m[2];
-                       $num = strtr( $isbn, array( 
+                       $num = strtr( $isbn, array(
                                '-' => '',
                                ' ' => '',
                                'x' => 'X',
                        ));
-                       $titleObj = Title::makeTitle( NS_SPECIAL, 'Booksources' );
+                       $titleObj = SpecialPage::getTitleFor( 'Booksources' );
                        $text = '<a href="' .
                                $titleObj->escapeLocalUrl( "isbn=$num" ) .
                                "\" class=\"internal\">ISBN $isbn</a>";
@@ -1022,10 +1069,10 @@ class Parser
                                $urlmsg = 'pubmedurl';
                                $id = $m[1];
                        } else {
-                               throw new MWException( __METHOD__.': unrecognised match type "' . 
+                               throw new MWException( __METHOD__.': unrecognised match type "' .
                                        substr($m[0], 0, 20 ) . '"' );
                        }
-               
+
                        $url = wfMsg( $urlmsg, $id);
                        $sk =& $this->mOptions->getSkin();
                        $la = $sk->getExternalLinkAttributes( $url, $keyword.$id );
@@ -1105,9 +1152,9 @@ class Parser
                                        }
                                        # 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++; }
+                                       if ( strlen( $arr[$i] ) == 2 )      { $numitalics++;             }
+                                       else if ( strlen( $arr[$i] ) == 3 ) { $numbold++;                }
+                                       else if ( strlen( $arr[$i] ) == 5 ) { $numitalics++; $numbold++; }
                                }
                                $i++;
                        }
@@ -1263,6 +1310,7 @@ class Parser
                        # 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]);
@@ -1298,7 +1346,7 @@ class Parser
                        }
 
                        $text = $wgContLang->markNoConversion($text);
-                       
+
                        $url = Sanitizer::cleanUrl( $url );
 
                        # Process the trail (i.e. everything after this link up until start of the next link),
@@ -1341,6 +1389,7 @@ class Parser
                        $protocol = $bits[$i++];
                        $remainder = $bits[$i++];
 
+                       $m = array();
                        if ( preg_match( '/^('.EXT_LINK_URL_CLASS.'+)(.*)$/s', $remainder, $m ) ) {
                                # Found some characters after the protocol that look promising
                                $url = $protocol . $m[1];
@@ -1348,10 +1397,10 @@ class Parser
 
                                # special case: handle urls as url args:
                                # http://www.example.com/foo?=http://www.example.com/bar
-                               if(strlen($trail) == 0 && 
+                               if(strlen($trail) == 0 &&
                                        isset($bits[$i]) &&
                                        preg_match('/^'. wfUrlProtocols() . '$/S', $bits[$i]) &&
-                                       preg_match( '/^('.EXT_LINK_URL_CLASS.'+)(.*)$/s', $bits[$i + 1], $m )) 
+                                       preg_match( '/^('.EXT_LINK_URL_CLASS.'+)(.*)$/s', $bits[$i + 1], $m ))
                                {
                                        # add protocol, arg
                                        $url .= $bits[$i] . $m[1]; # protocol, url as arg to previous link
@@ -1362,6 +1411,7 @@ class Parser
                                # 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]);
@@ -1497,6 +1547,7 @@ class Parser
                $nottalk = !$this->mTitle->isTalkPage();
 
                if ( $useLinkPrefixExtension ) {
+                       $m = array();
                        if ( preg_match( $e2, $s, $m ) ) {
                                $first_prefix = $m[2];
                        } else {
@@ -1507,7 +1558,6 @@ class Parser
                }
 
                $selflink = $this->mTitle->getPrefixedText();
-               $checkVariantLink = sizeof($wgContLang->getVariants())>1;
                $useSubpages = $this->areSubpagesAllowed();
                wfProfileOut( $fname.'-setup' );
 
@@ -1543,10 +1593,10 @@ class Parser
                                # 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 
-                               ) 
+                               if( $text !== '' &&
+                                       substr( $m[3], 0, 1 ) === ']' &&
+                                       strpos($text, '[') !== false
+                               )
                                {
                                        $text .= ']'; # so that replaceExternalLinks($text) works later
                                        $m[3] = substr( $m[3], 1 );
@@ -1595,24 +1645,17 @@ class Parser
 
                        wfProfileOut( "$fname-misc" );
                        wfProfileIn( "$fname-title" );
-                       $nt = Title::newFromText( $this->unstripNoWiki($link, $this->mStripState) );
+                       $nt = Title::newFromText( $this->mStripState->unstripNoWiki($link) );
                        if( !$nt ) {
                                $s .= $prefix . '[[' . $line;
                                wfProfileOut( "$fname-title" );
                                continue;
                        }
 
-                       #check other language variants of the link
-                       #if the article does not exist
-                       if( $checkVariantLink
-                           && $nt->getArticleID() == 0 ) {
-                               $wgContLang->findVariantLink($link, $nt);
-                       }
-
                        $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
@@ -1674,7 +1717,7 @@ class Parser
 
                                if ( $ns == NS_IMAGE ) {
                                        wfProfileIn( "$fname-image" );
-                                       if ( !wfIsBadImage( $nt->getDBkey() ) ) {
+                                       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
@@ -1826,7 +1869,7 @@ class Parser
         * @return string less-or-more HTML with NOPARSE bits
         */
        function armorLinks( $text ) {
-               return preg_replace( "/\b(" . wfUrlProtocols() . ')/',
+               return preg_replace( '/\b(' . wfUrlProtocols() . ')/',
                        "{$this->mUniqPrefix}NOPARSE$1", $text );
        }
 
@@ -1860,6 +1903,9 @@ class Parser
                wfProfileIn( $fname );
                $ret = $target; # default return value is no change
 
+               # bug 7425
+               $target = trim( $target );
+
                # Some namespaces don't allow subpages,
                # so only perform processing if subpages are allowed
                if( $this->areSubpagesAllowed() ) {
@@ -2330,9 +2376,11 @@ class Parser
                 * expensive to check many times.
                 */
                static $varCache = array();
-               if ( wfRunHooks( 'ParserGetVariableValueVarCache', array( &$this, &$varCache ) ) )
-                       if ( isset( $varCache[$index] ) )
+               if ( wfRunHooks( 'ParserGetVariableValueVarCache', array( &$this, &$varCache ) ) ) {
+                       if ( isset( $varCache[$index] ) ) {
                                return $varCache[$index];
+                       }
+               }
 
                $ts = time();
                wfRunHooks( 'ParserGetVariableValueTs', array( &$this, &$ts ) );
@@ -2419,6 +2467,16 @@ class Parser
                                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':
@@ -2460,23 +2518,21 @@ class Parser
                        case 'localdow':
                                return $varCache[$index] = $wgContLang->formatNum( $localDayOfWeek );
                        case 'numberofarticles':
-                               return $varCache[$index] = $wgContLang->formatNum( wfNumberOfArticles() );
+                               return $varCache[$index] = $wgContLang->formatNum( SiteStats::articles() );
                        case 'numberoffiles':
-                               return $varCache[$index] = $wgContLang->formatNum( wfNumberOfFiles() );
+                               return $varCache[$index] = $wgContLang->formatNum( SiteStats::images() );
                        case 'numberofusers':
-                               return $varCache[$index] = $wgContLang->formatNum( wfNumberOfUsers() );
+                               return $varCache[$index] = $wgContLang->formatNum( SiteStats::users() );
                        case 'numberofpages':
-                               return $varCache[$index] = $wgContLang->formatNum( wfNumberOfPages() );
+                               return $varCache[$index] = $wgContLang->formatNum( SiteStats::pages() );
                        case 'numberofadmins':
-                               return $varCache[$index]  = $wgContLang->formatNum( wfNumberOfAdmins() );
+                               return $varCache[$index]  = $wgContLang->formatNum( SiteStats::admins() );
                        case 'currenttimestamp':
                                return $varCache[$index] = wfTimestampNow();
                        case 'localtimestamp':
                                return $varCache[$index] = $localTimestamp;
                        case 'currentversion':
                                return $varCache[$index] = SpecialVersion::getVersion();
-                               #global $wgVersion;
-                               #return $wgVersion;
                        case 'sitename':
                                return $wgSitename;
                        case 'server':
@@ -2539,7 +2595,7 @@ class Parser
                $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
@@ -2557,9 +2613,14 @@ class Parser
                                        $found = 'pipe';
                                } elseif ( $text[$i] == $currentClosing ) {
                                        $found = 'close';
-                               } else {
+                               } 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
@@ -2588,13 +2649,13 @@ class Parser
                                $maxCount = $openingBraceStack[$lastOpeningBrace]['count'];
                                $count = strspn( $text, $text[$i], $i, $maxCount );
 
-                               # check for maximum matching characters (if there are 5 closing 
+                               # 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 
+                                       # The specified maximum exists in the callback array, unless the caller
                                        # has made an error
                                        $matchingCount = $cbType['max'];
                                } else {
@@ -2615,12 +2676,12 @@ class Parser
 
                                # let's set a title or last part (if '|' was found)
                                if (null === $openingBraceStack[$lastOpeningBrace]['parts']) {
-                                       $openingBraceStack[$lastOpeningBrace]['title'] = 
-                                               substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'], 
+                                       $openingBraceStack[$lastOpeningBrace]['title'] =
+                                               substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'],
                                                $i - $openingBraceStack[$lastOpeningBrace]['partStart']);
                                } else {
-                                       $openingBraceStack[$lastOpeningBrace]['parts'][] = 
-                                               substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'], 
+                                       $openingBraceStack[$lastOpeningBrace]['parts'][] =
+                                               substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'],
                                                $i - $openingBraceStack[$lastOpeningBrace]['partStart']);
                                }
 
@@ -2670,13 +2731,13 @@ class Parser
                        } 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'], 
+                                       $openingBraceStack[$lastOpeningBrace]['title'] =
+                                               substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'],
                                                $i - $openingBraceStack[$lastOpeningBrace]['partStart']);
                                        $openingBraceStack[$lastOpeningBrace]['parts'] = array();
                                } else {
-                                       $openingBraceStack[$lastOpeningBrace]['parts'][] = 
-                                               substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'], 
+                                       $openingBraceStack[$lastOpeningBrace]['parts'][] =
+                                               substr($text, $openingBraceStack[$lastOpeningBrace]['partStart'],
                                                $i - $openingBraceStack[$lastOpeningBrace]['partStart']);
                                }
                                $openingBraceStack[$lastOpeningBrace]['partStart'] = ++$i;
@@ -2718,19 +2779,19 @@ class Parser
                if ( !$argsOnly ) {
                        $braceCallbacks[2] = array( &$this, 'braceSubstitution' );
                }
-               if ( !$this->mOutputType != OT_MSG ) {
+               if ( $this->mOutputType != OT_MSG ) {
                        $braceCallbacks[3] = array( &$this, 'argSubstitution' );
                }
                if ( $braceCallbacks ) {
-                       $callbacks = array( 
+                       $callbacks = array(
                                '{' => array(
                                        'end' => '}',
                                        'cb' => $braceCallbacks,
                                        'min' => $argsOnly ? 3 : 2,
                                        'max' => isset( $braceCallbacks[3] ) ? 3 : 2,
                                ),
-                               '[' => array( 
-                                       'end' => ']', 
+                               '[' => array(
+                                       'end' => ']',
                                        'cb' => array(2=>null),
                                        'min' => 2,
                                        'max' => 2,
@@ -2749,8 +2810,9 @@ class Parser
         * @private
         */
        function variableSubstitution( $matches ) {
+               global $wgContLang;
                $fname = 'Parser::variableSubstitution';
-               $varname = $matches[1];
+               $varname = $wgContLang->lc($matches[1]);
                wfProfileIn( $fname );
                $skip = false;
                if ( $this->mOutputType == OT_WIKI ) {
@@ -2764,8 +2826,14 @@ class Parser
                }
                if ( !$skip && array_key_exists( $varname, $this->mVariables ) ) {
                        $id = $this->mVariables[$varname];
-                       $text = $this->getVariableValue( $id );
-                       $this->mOutput->mContainsOldMagic = true;
+                       # Now check if we did really match, case sensitive or not
+                       $mw =& MagicWord::get( $id );
+                       if ($mw->match($matches[1])) {
+                               $text = $this->getVariableValue( $id );
+                               $this->mOutput->mContainsOldMagic = true;
+                       } else {
+                               $text = $matches[0];
+                       }
                } else {
                        $text = $matches[0];
                }
@@ -2773,31 +2841,6 @@ class Parser
                return $text;
        }
 
-       # Split template arguments
-       function getTemplateArgs( $argsString ) {
-               if ( $argsString === '' ) {
-                       return array();
-               }
-
-               $args = explode( '|', substr( $argsString, 1 ) );
-
-               # If any of the arguments contains a '[[' but no ']]', it needs to be
-               # merged with the next arg because the '|' character between belongs
-               # to the link syntax and not the template parameter syntax.
-               $argc = count($args);
-
-               for ( $i = 0; $i < $argc-1; $i++ ) {
-                       if ( substr_count ( $args[$i], '[[' ) != substr_count ( $args[$i], ']]' ) ) {
-                               $args[$i] .= '|'.$args[$i+1];
-                               array_splice($args, $i+1, 1);
-                               $i--;
-                               $argc--;
-                       }
-               }
-
-               return $args;
-       }
-
        /**
         * Return the text of a template, after recursively
         * replacing any variables or templates within the template.
@@ -2810,7 +2853,7 @@ class Parser
         * @private
         */
        function braceSubstitution( $piece ) {
-               global $wgContLang, $wgLang, $wgAllowDisplayTitle, $action;
+               global $wgContLang, $wgLang, $wgAllowDisplayTitle;
                $fname = __METHOD__ /*. '-L' . count( $this->mArgStack )*/;
                wfProfileIn( $fname );
                wfProfileIn( __METHOD__.'-setup' );
@@ -2821,6 +2864,7 @@ class Parser
                $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
 
@@ -2829,7 +2873,7 @@ class Parser
 
                $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
 
@@ -2847,7 +2891,6 @@ class Parser
                }
 
                $args = (null == $piece['parts']) ? array() : $piece['parts'];
-               $argc = count( $args );
                wfProfileOut( __METHOD__.'-setup' );
 
                # SUBST
@@ -2866,7 +2909,7 @@ class Parser
                        }
                }
 
-               # MSG, MSGNW, INT and RAW
+               # MSG, MSGNW and RAW
                if ( !$found ) {
                        # Check for MSGNW:
                        $mwMsgnw =& MagicWord::get( 'msgnw' );
@@ -2877,26 +2920,19 @@ class Parser
                                $mwMsg =& MagicWord::get( 'msg' );
                                $mwMsg->matchStartAndRemove( $part1 );
                        }
-                       
+
                        # Check for RAW:
                        $mwRaw =& MagicWord::get( 'raw' );
                        if ( $mwRaw->matchStartAndRemove( $part1 ) ) {
                                $forceRawInterwiki = true;
                        }
-                       
-                       # Check if it is an internal message
-                       $mwInt =& MagicWord::get( 'int' );
-                       if ( $mwInt->matchStartAndRemove( $part1 ) ) {
-                               $text = $linestart . wfMsgReal( $part1, $args, true );
-                               $found = true;
-                       }
                }
                wfProfileOut( __METHOD__.'-modifiers' );
 
                # Parser functions
                if ( !$found ) {
                        wfProfileIn( __METHOD__ . '-pfunc' );
-                       
+
                        $colonPos = strpos( $part1, ':' );
                        if ( $colonPos !== false ) {
                                # Case sensitive functions
@@ -2978,9 +3014,8 @@ class Parser
 
                        if ( !is_null( $title ) ) {
                                $titleText = $title->getPrefixedText();
-                               $checkVariantLink = sizeof($wgContLang->getVariants())>1;
                                # Check for language variants if the template is not found
-                               if($checkVariantLink && $title->getArticleID() == 0){
+                               if($wgContLang->hasVariants() && $title->getArticleID() == 0){
                                        $wgContLang->findVariantLink($part1, $title);
                                }
 
@@ -3005,7 +3040,7 @@ class Parser
 
                                        # If the title is valid but undisplayable, make a link to it
                                        if ( !$found && ( $this->ot['html'] || $this->ot['pre'] ) ) {
-                                               $text = "[[$titleText]]";
+                                               $text = "[[:$titleText]]";
                                                $found = true;
                                        }
                                } elseif ( $title->isTrans() ) {
@@ -3078,13 +3113,13 @@ class Parser
                        if ( !$noparse ) {
                                # If there are any <onlyinclude> tags, only include them
                                if ( in_string( '<onlyinclude>', $text ) && in_string( '</onlyinclude>', $text ) ) {
-                                       preg_match_all( '/<onlyinclude>(.*?)\n?<\/onlyinclude>/s', $text, $m );
-                                       $text = '';
-                                       foreach ($m[1] as $piece)
-                                               $text .= $piece;
+                                       $replacer = new OnlyIncludeReplacer;
+                                       StringUtils::delimiterReplaceCallback( '<onlyinclude>', '</onlyinclude>', 
+                                               array( &$replacer, 'replace' ), $text );
+                                       $text = $replacer->output;
                                }
                                # Remove <noinclude> sections and <includeonly> tags
-                               $text = preg_replace( '/<noinclude>.*?<\/noinclude>/s', '', $text );
+                               $text = StringUtils::delimiterReplace( '<noinclude>', '</noinclude>', '', $text );
                                $text = strtr( $text, array( '<includeonly>' => '' , '</includeonly>' => '' ) );
 
                                if( $this->ot['html'] || $this->ot['pre'] ) {
@@ -3100,7 +3135,7 @@ class Parser
 
                                # 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('/^({\\||:|;|#|\*)/', $text)) /*}*/{ 
+                               if (!$piece['lineStart'] && preg_match('/^({\\||:|;|#|\*)/', $text)) /*}*/{
                                        $text = "\n" . $text;
                                }
                        } elseif ( !$noargs ) {
@@ -3142,7 +3177,7 @@ class Parser
                                        $m = preg_split('/(^={1,6}.*?={1,6}\s*?$)/m', $text, -1,
                                                PREG_SPLIT_DELIM_CAPTURE);
                                        $text = '';
-                                       $nsec = 0;
+                                       $nsec = $headingOffset;
                                        for( $i = 0; $i < count($m); $i += 2 ) {
                                                $text .= $m[$i];
                                                if (!isset($m[$i + 1]) || $m[$i + 1] == "") continue;
@@ -3151,6 +3186,7 @@ class Parser
                                                        $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];
@@ -3258,7 +3294,7 @@ class Parser
 
                if ( array_key_exists( $arg, $inputArgs ) ) {
                        $text = $inputArgs[$arg];
-               } else if (($this->mOutputType == OT_HTML || $this->mOutputType == OT_PREPROCESS ) && 
+               } else if (($this->mOutputType == OT_HTML || $this->mOutputType == OT_PREPROCESS ) &&
                null != $matches['parts'] && count($matches['parts']) > 0) {
                        $text = $matches['parts'][0];
                }
@@ -3353,6 +3389,7 @@ class Parser
 
                # 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([1-6])(.*?'.'>)(.*?)<\/H[1-6] *>/i', $text, $matches );
 
                # if there are fewer than 4 headlines in the article, do not show TOC
@@ -3404,7 +3441,7 @@ class Parser
                        $templatetitle = '';
                        $templatesection = 0;
                        $numbering = '';
-
+                       $mat = array();
                        if (preg_match("/<!--MWTEMPLATESECTION=([^&]+)&([^_]+)-->/", $headline, $mat)) {
                                $istemplate = 1;
                                $templatetitle = base64_decode($mat[1]);
@@ -3477,8 +3514,7 @@ class Parser
 
                        # 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->unstrip( $headline, $this->mStripState );
-                       $canonized_headline = $this->unstripNoWiki( $canonized_headline, $this->mStripState );
+                       $canonized_headline = $this->mStripState->unstripBoth( $headline );
 
                        # Remove link placeholders by the link text.
                        #     <!--LINK number-->
@@ -3500,7 +3536,7 @@ class Parser
                        $refers[$headlineCount] = $canonized_headline;
 
                        # count how many in assoc. array so we can track dupes in anchors
-                       @$refers[$canonized_headline]++;
+                       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)
@@ -3517,6 +3553,9 @@ class Parser
                        if( $enoughToc && ( !isset($wgMaxTocLevel) || $toclevel<$wgMaxTocLevel ) ) {
                                $toc .= $sk->tocLine($anchor, $tocline, $numbering, $toclevel);
                        }
+                       # give headline the correct <h#> tag
+                       $head[$headlineCount] = "<a name=\"$anchor\"></a><h".$level.$matches[2][$headlineCount];
+
                        if( $showEditLink && ( !$istemplate || $templatetitle !== "" ) ) {
                                if ( empty( $head[$headlineCount] ) ) {
                                        $head[$headlineCount] = '';
@@ -3526,9 +3565,11 @@ class Parser
                                else
                                        $head[$headlineCount] .= $sk->editSectionLink($this->mTitle, $sectionCount+1, $headline_hint);
                        }
-
-                       # give headline the correct <h#> tag
-                       @$head[$headlineCount] .= "<a name=\"$anchor\"></a><h".$level.$matches[2][$headlineCount] .$headline.'</h'.$level.'>';
+                       // Yes, the headline logically goes before the edit section.  Why isn't it there
+                       // in source?  Ask the CSS people.  The float gets screwed up if you do that.
+                       // This might be moved to before the editsection at some point so that it will
+                       // display a bit more prettily without CSS, so please don't rely on the order.
+                       $head[$headlineCount] .= ' <span class="mw-headline">'.$headline.'</span></h'.$level.'>';
 
                        $headlineCount++;
                        if( !$istemplate )
@@ -3586,7 +3627,7 @@ class Parser
         * @return string the altered wiki markup
         * @public
         */
-       function preSaveTransform( $text, &$title, &$user, $options, $clearState = true ) {
+       function preSaveTransform( $text, &$title, $user, $options, $clearState = true ) {
                $this->mOptions = $options;
                $this->mTitle =& $title;
                $this->setOutputType( OT_WIKI );
@@ -3595,15 +3636,14 @@ class Parser
                        $this->clearState();
                }
 
-               $stripState = false;
+               $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 = $this->unstrip( $text, $stripState );
-               $text = $this->unstripNoWiki( $text, $stripState );
+               $text = $stripState->unstripBoth( $text );
                return $text;
        }
 
@@ -3611,7 +3651,7 @@ class Parser
         * Pre-save transform helper function
         * @private
         */
-       function pstPass2( $text, &$stripState, &$user ) {
+       function pstPass2( $text, &$stripState, $user ) {
                global $wgContLang, $wgLocaltimezone;
 
                /* Note: This is the timestamp saved as hardcoded wikitext to
@@ -3648,20 +3688,24 @@ class Parser
                #
                global $wgLegalTitleChars;
                $tc = "[$wgLegalTitleChars]";
+               $nc = '[ _0-9A-Za-z\x80-\xff]'; # Namespaces can use non-ascii!
 
-               $namespacechar = '[ _0-9A-Za-z\x80-\xff]'; # Namespaces can use non-ascii!
-               $conpat = "/^{$tc}+?( \\({$tc}+\\)|)$/";
-
-               $p1 = "/\[\[(:?$namespacechar+:|:|)({$tc}+?)( \\({$tc}+\\)|)\\|]]/";    # [[ns:page (context)|]]
-               $p2 = "/\[\[\\|({$tc}+)]]/";                                            # [[|page]]
+               $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();
-               if ( preg_match( $conpat, $t, $m ) && '' != $m[1] ) {
-                       $text = preg_replace( $p2, "[[\\1{$m[1]}|\\1]]", $text );
+               $m = array();
+               if ( preg_match( "/^($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 $m[1] is empty, don't bother duplicating the title
+                       # if there's no context, don't bother duplicating the title
                        $text = preg_replace( $p2, '[[\\1]]', $text );
                }
 
@@ -3790,7 +3834,11 @@ class Parser
 
                wfProfileIn($fname);
 
-               $this->mTitle = $wgTitle;
+               if ( $wgTitle ) {
+                       $this->mTitle = $wgTitle;
+               } else {
+                       $this->mTitle = Title::newFromText('msg');
+               }
                $this->mOptions = $options;
                $this->setOutputType( OT_MSG );
                $this->clearState();
@@ -3818,7 +3866,7 @@ class Parser
         */
        function setHook( $tag, $callback ) {
                $tag = strtolower( $tag );
-               $oldVal = @$this->mTagHooks[$tag];
+               $oldVal = isset( $this->mTagHooks[$tag] ) ? $this->mTagHooks[$tag] : null;
                $this->mTagHooks[$tag] = $callback;
 
                return $oldVal;
@@ -3829,10 +3877,10 @@ class Parser
         * The callback function should have the form:
         *    function myParserFunction( &$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 
+        * 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 
+        *   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.
@@ -3843,13 +3891,13 @@ class Parser
         *
         * @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: 
+        * @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 ) {
-               $oldVal = @$this->mFunctionHooks[$id];
+               $oldVal = isset( $this->mFunctionHooks[$id] ) ? $this->mFunctionHooks[$id] : null;
                $this->mFunctionHooks[$id] = $callback;
 
                # Add to function cache
@@ -3898,7 +3946,7 @@ class Parser
         */
        function replaceLinkHolders( &$text, $options = 0 ) {
                global $wgUser;
-               global $wgOutputReplace;
+               global $wgContLang;
 
                $fname = 'Parser::replaceLinkHolders';
                wfProfileIn( $fname );
@@ -3919,6 +3967,7 @@ class Parser
 
                        # Generate query
                        $query = false;
+                       $current = null;
                        foreach ( $this->mLinkHolders['namespaces'] as $key => $ns ) {
                                # Make title object
                                $title = $this->mLinkHolders['titles'][$key];
@@ -3989,9 +4038,135 @@ class Parser
                        }
                        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){
+                                               $variantTitle = Title::newFromDBkey( Title::makeName(NS_CATEGORY,$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();
+                                               $linkCache->addGoodLinkObj( $s->page_id, $variantTitle );
+                                               $this->mOutput->addLink( $variantTitle, $s->page_id );
+
+                                               $holderKeys = array();
+                                               if(isset($variantMap[$varPdbk]))
+                                                       $holderKeys = $variantMap[$varPdbk];
+
+                                               // 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' );
-                       $wgOutputReplace = array();
+                       $replacePairs = array();
                        foreach ( $this->mLinkHolders['namespaces'] as $key => $ns ) {
                                $pdbk = $pdbks[$key];
                                $searchkey = "<!--LINK $key-->";
@@ -4000,27 +4175,27 @@ class Parser
                                        $linkCache->addBadLinkObj( $title );
                                        $colours[$pdbk] = 0;
                                        $this->mOutput->addLink( $title, 0 );
-                                       $wgOutputReplace[$searchkey] = $sk->makeBrokenLinkObj( $title,
+                                       $replacePairs[$searchkey] = $sk->makeBrokenLinkObj( $title,
                                                                        $this->mLinkHolders['texts'][$key],
                                                                        $this->mLinkHolders['queries'][$key] );
                                } elseif ( $colours[$pdbk] == 1 ) {
-                                       $wgOutputReplace[$searchkey] = $sk->makeKnownLinkObj( $title,
+                                       $replacePairs[$searchkey] = $sk->makeKnownLinkObj( $title,
                                                                        $this->mLinkHolders['texts'][$key],
                                                                        $this->mLinkHolders['queries'][$key] );
                                } elseif ( $colours[$pdbk] == 2 ) {
-                                       $wgOutputReplace[$searchkey] = $sk->makeStubLinkObj( $title,
+                                       $replacePairs[$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 .*?-->)/',
-                               "wfOutputReplaceMatches",
+                               $replacer->cb(),
                                $text);
 
                        wfProfileOut( $fname.'-replace' );
@@ -4031,15 +4206,16 @@ class Parser
                if ( !empty( $this->mInterwikiLinkHolders['texts'] ) ) {
                        wfProfileIn( $fname.'-interwiki' );
                        # Make interwiki link HTML
-                       $wgOutputReplace = array();
+                       $replacePairs = array();
                        foreach( $this->mInterwikiLinkHolders['texts'] as $key => $link ) {
                                $title = $this->mInterwikiLinkHolders['titles'][$key];
-                               $wgOutputReplace[$key] = $sk->makeLinkObj( $title, $link );
+                               $replacePairs[$key] = $sk->makeLinkObj( $title, $link );
                        }
+                       $replacer = new HashtableReplacer( $replacePairs, 1 );
 
                        $text = preg_replace_callback(
                                '/<!--IWLINK (.*?)-->/',
-                               "wfOutputReplaceMatches",
+                               $replacer->cb(),
                                $text );
                        wfProfileOut( $fname.'-interwiki' );
                }
@@ -4090,13 +4266,13 @@ class Parser
        /**
         * Tag hook handler for 'pre'.
         */
-       function renderPreTag( $text, $attribs, $parser ) {
+       function renderPreTag( $text, $attribs ) {
                // Backwards-compatibility hack
-               $content = preg_replace( '!<nowiki>(.*?)</nowiki>!is', '\\1', $text );
+               $content = StringUtils::delimiterReplace( '<nowiki>', '</nowiki>', '$1', $text, 'i' );
 
                $attribs = Sanitizer::validateTagAttributes( $attribs, 'pre' );
                return wfOpenElement( 'pre', $attribs ) .
-                       wfEscapeHTMLTagsOnly( $content ) .
+                       Xml::escapeTagsOnly( $content ) .
                        '</pre>';
        }
 
@@ -4123,6 +4299,7 @@ class Parser
                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( $matches ) == 0 ) {
@@ -4161,7 +4338,7 @@ class Parser
        /**
         * Parse image options text and use it to make an image
         */
-       function makeImage( &$nt, $options ) {
+       function makeImage( $nt, $options ) {
                global $wgUseImageResize, $wgDjvuRenderer;
 
                $align = '';
@@ -4193,7 +4370,7 @@ class Parser
                $page = null;
                $manual_thumb = '' ;
 
-               foreach( $part as $key => $val ) {
+               foreach( $part as $val ) {
                        if ( $wgUseImageResize && ! is_null( $mwThumb->matchVariableStartToEnd($val) ) ) {
                                $thumb=true;
                        } elseif ( ! is_null( $match = $mwManualThumb->matchVariableStartToEnd($val) ) ) {
@@ -4219,6 +4396,7 @@ class Parser
                        } elseif ( $wgUseImageResize && ! is_null( $match = $mwWidth->matchVariableStartToEnd($val) ) ) {
                                wfDebug( "img_width match: $match\n" );
                                # $match is the image width in pixels
+                               $m = array();
                                if ( preg_match( '/^([0-9]*)x([0-9]*)$/', $match, $m ) ) {
                                        $width = intval( $m[1] );
                                        $height = intval( $m[2] );
@@ -4237,7 +4415,7 @@ class Parser
                # make sure there are no placeholders in thumbnail attributes
                # that are later expanded to html- so expand them now and
                # remove the tags
-               $alt = $this->unstrip($alt, $this->mStripState); 
+               $alt = $this->mStripState->unstripBoth( $alt );
                $alt = Sanitizer::stripAllTags( $alt );
 
                # Linker does the rest
@@ -4264,15 +4442,10 @@ class Parser
         */
        function attributeStripCallback( &$text, $args ) {
                $text = $this->replaceVariables( $text, $args );
-               $text = $this->unstripForHTML( $text );
+               $text = $this->mStripState->unstripBoth( $text );
                return $text;
        }
 
-       function unstripForHTML( $text ) {
-               $text = $this->unstrip( $text, $this->mStripState );
-               $text = $this->unstripNoWiki( $text, $this->mStripState );
-               return $text;
-       }
        /**#@-*/
 
        /**#@+
@@ -4308,14 +4481,14 @@ class Parser
        private function extractSections( $text, $section, $mode, $newtext='' ) {
                # strip NOWIKI etc. to avoid confusion (true-parameter causes HTML
                # comments to be stripped as well)
-               $striparray = array();
+               $stripState = new StripState;
 
                $oldOutputType = $this->mOutputType;
                $oldOptions = $this->mOptions;
                $this->mOptions = new ParserOptions();
                $this->setOutputType( OT_WIKI );
 
-               $striptext = $this->strip( $text, $striparray, true );
+               $striptext = $this->strip( $text, $stripState, true );
 
                $this->setOutputType( $oldOutputType );
                $this->mOptions = $oldOptions;
@@ -4422,9 +4595,7 @@ class Parser
                        }
                }
                # reinsert stripped tags
-               $rv = $this->unstrip( $rv, $striparray );
-               $rv = $this->unstripNoWiki( $rv, $striparray );
-               $rv = trim( $rv );
+               $rv = trim( $stripState->unstripBoth( $rv ) );
                return $rv;
        }
 
@@ -4447,6 +4618,36 @@ class Parser
                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;
+       }
 }
 
 /**
@@ -4517,7 +4718,7 @@ class ParserOutput
        function addImage( $name )           { $this->mImages[$name] = 1; }
        function addLanguageLink( $t )       { $this->mLanguageLinks[] = $t; }
        function addExternalLink( $url )     { $this->mExternalLinks[$url] = 1; }
-       
+
        function setNewSection( $value ) {
                $this->mNewSection = (bool)$value;
        }
@@ -4572,7 +4773,7 @@ class ParserOutput
  */
 class ParserOptions
 {
-       # All variables are private
+       # All variables are supposed to be private in theory, although in practise this is not the case.
        var $mUseTeX;                    # Use texvc to expand <math> tags
        var $mUseDynamicDates;           # Use DateFormatter to format dates
        var $mInterwikiMagic;            # Interlanguage links are removed and returned in an array
@@ -4610,7 +4811,7 @@ class ParserOptions
                return $this->mSkin;
        }
 
-       function getDateFormat() { 
+       function getDateFormat() {
                if ( !isset( $this->mDateFormat ) ) {
                        $this->mDateFormat = $this->mUser->getDatePreference();
                }
@@ -4627,7 +4828,7 @@ class ParserOptions
        function setNumberHeadings( $x )            { return wfSetVar( $this->mNumberHeadings, $x ); }
        function setAllowSpecialInclusion( $x )     { return wfSetVar( $this->mAllowSpecialInclusion, $x ); }
        function setTidy( $x )                      { return wfSetVar( $this->mTidy, $x); }
-       function setSkin( &$x ) { $this->mSkin =& $x; }
+       function setSkin( $x )                      { $this->mSkin = $x; }
        function setInterfaceMessage( $x )          { return wfSetVar( $this->mInterfaceMessage, $x); }
        function setMaxIncludeSize( $x )            { return wfSetVar( $this->mMaxIncludeSize, $x ); }
        function setRemoveComments( $x )            { return wfSetVar( $this->mRemoveComments, $x ); }
@@ -4656,7 +4857,6 @@ class ParserOptions
                                $user = $wgUser;
                        } else {
                                $user = new User;
-                               $user->setLoaded( true );
                        }
                } else {
                        $user =& $userInput;
@@ -4682,132 +4882,47 @@ class ParserOptions
        }
 }
 
-/**
- * Callback function used by Parser::replaceLinkHolders()
- * to substitute link placeholders.
- */
-function &wfOutputReplaceMatches( $matches ) {
-       global $wgOutputReplace;
-       return $wgOutputReplace[$matches[1]];
-}
-
-/**
- * Return the total number of articles
- */
-function wfNumberOfArticles() {
-       global $wgNumberOfArticles;
+class OnlyIncludeReplacer {
+       var $output = '';
 
-       wfLoadSiteStats();
-       return $wgNumberOfArticles;
-}
-
-/**
- * Return the number of files
- */
-function wfNumberOfFiles() {
-       $fname = 'wfNumberOfFiles';
-
-       wfProfileIn( $fname );
-       $dbr =& wfGetDB( DB_SLAVE );
-       $numImages = $dbr->selectField('site_stats', 'ss_images', array(), $fname );
-       wfProfileOut( $fname );
-
-       return $numImages;
-}
-
-/**
- * Return the number of user accounts
- * @return integer
- */
-function wfNumberOfUsers() {
-       wfProfileIn( 'wfNumberOfUsers' );
-       $dbr =& wfGetDB( DB_SLAVE );
-       $count = $dbr->selectField( 'site_stats', 'ss_users', array(), 'wfNumberOfUsers' );
-       wfProfileOut( 'wfNumberOfUsers' );
-       return (int)$count;
+       function replace( $matches ) { 
+               if ( substr( $matches[1], -1 ) == "\n" ) {
+                       $this->output .= substr( $matches[1], 0, -1 );
+               } else {
+                       $this->output .= $matches[1];
+               }
+       }
 }
 
-/**
- * Return the total number of pages
- * @return integer
- */
-function wfNumberOfPages() {
-       wfProfileIn( 'wfNumberOfPages' );
-       $dbr =& wfGetDB( DB_SLAVE );
-       $count = $dbr->selectField( 'site_stats', 'ss_total_pages', array(), 'wfNumberOfPages' );
-       wfProfileOut( 'wfNumberOfPages' );
-       return (int)$count;
-}
+class StripState {
+       var $general, $nowiki;
 
-/**
- * Return the total number of admins
- *
- * @return integer
- */
-function wfNumberOfAdmins() {
-       static $admins = -1;
-       wfProfileIn( 'wfNumberOfAdmins' );
-       if( $admins == -1 ) {
-               $dbr =& wfGetDB( DB_SLAVE );
-               $admins = $dbr->selectField( 'user_groups', 'COUNT(*)', array( 'ug_group' => 'sysop' ), 'wfNumberOfAdmins' );
+       function __construct() {
+               $this->general = new ReplacementArray;
+               $this->nowiki = new ReplacementArray;
        }
-       wfProfileOut( 'wfNumberOfAdmins' );
-       return (int)$admins;
-}
 
-/**
- * Count the number of pages in a particular namespace
- *
- * @param $ns Namespace
- * @return integer
- */
-function wfPagesInNs( $ns ) {
-       static $pageCount = array();
-       wfProfileIn( 'wfPagesInNs' );
-       if( !isset( $pageCount[$ns] ) ) {
-               $dbr =& wfGetDB( DB_SLAVE );
-               $pageCount[$ns] = $dbr->selectField( 'page', 'COUNT(*)', array( 'page_namespace' => $ns ), 'wfPagesInNs' );
+       function unstripGeneral( $text ) {
+               wfProfileIn( __METHOD__ );
+               $text = $this->general->replace( $text );
+               wfProfileOut( __METHOD__ );
+               return $text;
        }
-       wfProfileOut( 'wfPagesInNs' );
-       return (int)$pageCount[$ns];
-}
 
-/**
- * Get various statistics from the database
- * @private
- */
-function wfLoadSiteStats() {
-       global $wgNumberOfArticles, $wgTotalViews, $wgTotalEdits;
-       $fname = 'wfLoadSiteStats';
-
-       if ( -1 != $wgNumberOfArticles ) return;
-       $dbr =& wfGetDB( DB_SLAVE );
-       $s = $dbr->selectRow( 'site_stats',
-               array( 'ss_total_views', 'ss_total_edits', 'ss_good_articles' ),
-               array( 'ss_row_id' => 1 ), $fname
-       );
-
-       if ( $s === false ) {
-               return;
-       } else {
-               $wgTotalViews = $s->ss_total_views;
-               $wgTotalEdits = $s->ss_total_edits;
-               $wgNumberOfArticles = $s->ss_good_articles;
+       function unstripNoWiki( $text ) {
+               wfProfileIn( __METHOD__ );
+               $text = $this->nowiki->replace( $text );
+               wfProfileOut( __METHOD__ );
+               return $text;
        }
-}
 
-/**
- * Escape html tags
- * Basically replacing " > and < with HTML entities ( &quot;, &gt;, &lt;)
- *
- * @param $in String: text that might contain HTML tags.
- * @return string Escaped string
- */
-function wfEscapeHTMLTagsOnly( $in ) {
-       return str_replace(
-               array( '"', '>', '<' ),
-               array( '&quot;', '&gt;', '&lt;' ),
-               $in );
+       function unstripBoth( $text ) {
+               wfProfileIn( __METHOD__ );
+               $text = $this->general->replace( $text );
+               $text = $this->nowiki->replace( $text );
+               wfProfileOut( __METHOD__ );
+               return $text;
+       }
 }
 
 ?>