Category namespaces
[lhc/web/wiklou.git] / includes / Parser.php
index 435b406..c120ad1 100644 (file)
@@ -2,28 +2,56 @@
 
 include_once('Tokenizer.php');
 
-# PHP Parser 
-# 
-# Converts wikitext to HTML. 
+if( $GLOBALS['wgUseWikiHiero'] ){
+       include_once('wikihiero.php');
+}
+
+# PHP Parser
+#
+# Processes wiki markup
 #
-# Globals used: 
-#    objects:   $wgLang, $wgDateFormatter, $wgLinkCache, $wgCurOut
+# There are two main entry points into the Parser class: parse() and preSaveTransform().
+# The parse() function produces HTML output, preSaveTransform() produces altered wiki markup.
+#
+# Globals used:
+#    objects:   $wgLang, $wgDateFormatter, $wgLinkCache, $wgCurParser
 #
 # NOT $wgArticle, $wgUser or $wgTitle. Keep them away!
 #
 #    settings:  $wgUseTex*, $wgUseCategoryMagic*, $wgUseDynamicDates*, $wgInterwikiMagic*,
-#               $wgNamespacesWithSubpages, $wgLanguageCode, $wgAllowExternalImages*, 
+#               $wgNamespacesWithSubpages, $wgLanguageCode, $wgAllowExternalImages*,
 #               $wgLocaltimezone
 #
 #      * only within ParserOptions
+#
+#
+#----------------------------------------
+#    Variable substitution O(N^2) attack
+#-----------------------------------------
+# Without countermeasures, it would be possible to attack the parser by saving a page
+# filled with a large number of inclusions of large pages. The size of the generated
+# page would be proportional to the square of the input size. Hence, we limit the number
+# of inclusions of any given page, thus bringing any attack back to O(N).
+#
+
+define( "MAX_INCLUDE_REPEAT", 5 );
+
+# Allowed values for $mOutputType
+define( "OT_HTML", 1 );
+define( "OT_WIKI", 2 );
+define( "OT_MSG", 3 );
+
+# prefix for escaping, used in two functions at least
+define( "UNIQ_PREFIX", "NaodW29");
 
 class Parser
 {
        # Cleared with clearState():
-       var $mOutput, $mAutonumber, $mLastSection, $mDTopen, $mStripState;
+       var $mOutput, $mAutonumber, $mDTopen, $mStripState = array();
+       var $mVariables, $mIncludeCount, $mArgStack, $mLastSection, $mInPre;
 
        # Temporary:
-       var $mOptions, $mTitle;
+       var $mOptions, $mTitle, $mOutputType;
 
        function Parser()
        {
@@ -36,11 +64,14 @@ class Parser
                $this->mAutonumber = 0;
                $this->mLastSection = "";
                $this->mDTopen = false;
-               $this->mStripState = false;
+               $this->mVariables = false;
+               $this->mIncludeCount = array();
+               $this->mStripState = array();
+               $this->mArgStack = array();
        }
-       
+
        # First pass--just handle <nowiki> sections, pass the rest off
-       # to doWikiPass2() which does all the real work.
+       # to internalParse() which does all the real work.
        #
        # Returns a ParserOutput
        #
@@ -52,15 +83,30 @@ class Parser
                if ( $clearState ) {
                        $this->clearState();
                }
-               
+
                $this->mOptions = $options;
                $this->mTitle =& $title;
-               
+               $this->mOutputType = OT_HTML;
+
                $stripState = NULL;
-               $text = $this->strip( $text, $this->mStripState, true );
-               $text = $this->doWikiPass2( $text, $linestart );
+               $text = $this->strip( $text, $this->mStripState );
+               $text = $this->internalParse( $text, $linestart );
                $text = $this->unstrip( $text, $this->mStripState );
-               
+               # Clean up special characters, only run once, next-to-last before doBlockLevels
+               $fixtags = array(
+                       "/<hr *>/i" => '<hr/>',
+                       "/<br *>/i" => '<br/>',
+                       "/<center *>/i"=>'<div class="center">',
+                       "/<\\/center *>/i" => '</div>',
+                       # Clean up spare ampersands; note that we probably ought to be
+                       # more careful about named entities.
+                       '/&(?!:amp;|#[Xx][0-9A-fa-f]+;|#[0-9]+;|[a-zA-Z0-9]+;)/' => '&amp;'
+               );
+               $text = preg_replace( array_keys($fixtags), array_values($fixtags), $text );
+
+               # only once and last
+               $text = $this->doBlockLevels( $text, $linestart );
+
                $this->mOutput->setText( $text );
                wfProfileOut( $fname );
                return $this->mOutput;
@@ -70,113 +116,144 @@ class Parser
        {
                return dechex(mt_rand(0, 0x7fffffff)) . dechex(mt_rand(0, 0x7fffffff));
        }
-       
+
+       # Replaces all occurrences of <$tag>content</$tag> in the text
+       # with a random marker and returns the new text. the output parameter
+       # $content will be an associative array filled with data on the form
+       # $unique_marker => content.
+
+       # If $content is already set, the additional entries will be appended
+
+       /* static */ function extractTags($tag, $text, &$content, $uniq_prefix = ""){
+               $rnd = $uniq_prefix . '-' . $tag . Parser::getRandomString();
+               if ( !$content ) {
+                       $content = array( );
+               }
+               $n = 1;
+               $stripped = "";
+
+               while ( "" != $text ) {
+                       $p = preg_split( "/<\\s*$tag\\s*>/i", $text, 2 );
+                       $stripped .= $p[0];
+                       if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) {
+                               $text = "";
+                       } else {
+                               $q = preg_split( "/<\\/\\s*$tag\\s*>/i", $p[1], 2 );
+                               $marker = $rnd . sprintf("%08X", $n++);
+                               $content[$marker] = $q[0];
+                               $stripped .= $marker;
+                               $text = $q[1];
+                       }
+               }
+               return $stripped;
+       }
+
        # Strips <nowiki>, <pre> and <math>
        # 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
        #
-       function strip( $text, &$state, $render = true )
+       function strip( $text, &$state )
        {
-               $state = array(
-                       'nwlist' => array(),
-                       'nwsecs' => 0,
-                       'nwunq' => Parser::getRandomString(),
-                       'mathlist' => array(),
-                       'mathsecs' => 0,
-                       'mathunq' => Parser::getRandomString(),
-                       'prelist' => array(),
-                       'presecs' => 0,
-                       'preunq' => Parser::getRandomString()
-               );
+               $render = ($this->mOutputType == OT_HTML);
+               $nowiki_content = array();
+               $hiero_content = array();
+               $math_content = array();
+               $pre_content = array();
+               $item_content = array();
 
-               $stripped = "";
-               $stripped2 = "";
-               $stripped3 = "";
-               
                # Replace any instances of the placeholders
-               $text = str_replace( $state['nwunq'], wfHtmlEscapeFirst( $state['nwunq'] ), $text );
-               $text = str_replace( $state['mathunq'], wfHtmlEscapeFirst( $state['mathunq'] ), $text );
-               $text = str_replace( $state['preunq'], wfHtmlEscapeFirst( $state['preunq'] ), $text );
-               
-               while ( "" != $text ) {
-                       $p = preg_split( "/<\\s*nowiki\\s*>/i", $text, 2 );
-                       $stripped .= $p[0];
-                       if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { 
-                               $text = ""; 
+               $uniq_prefix = UNIQ_PREFIX;
+               #$text = str_replace( $uniq_prefix, wfHtmlEscapeFirst( $uniq_prefix ), $text );
+
+               $text = Parser::extractTags("nowiki", $text, $nowiki_content, $uniq_prefix);
+               foreach( $nowiki_content as $marker => $content ){
+                       if( $render ){
+                               $nowiki_content[$marker] = wfEscapeHTMLTagsOnly( $content );
                        } else {
-                               $q = preg_split( "/<\\/\\s*nowiki\\s*>/i", $p[1], 2 );
-                               ++$state['nwsecs'];
+                               $nowiki_content[$marker] = "<nowiki>$content</nowiki>";
+                       }
+               }
 
-                               if ( $render ) {
-                                       $state['nwlist'][$state['nwsecs']] = wfEscapeHTMLTagsOnly($q[0]);
+               if( $GLOBALS['wgUseWikiHiero'] ){
+                       $text = Parser::extractTags("hiero", $text, $hiero_content, $uniq_prefix);
+                       foreach( $hiero_content as $marker => $content ){
+                               if( $render ){
+                                       $hiero_content[$marker] = WikiHiero( $content, WH_MODE_HTML);
                                } else {
-                                       $state['nwlist'][$state['nwsecs']] = "<nowiki>{$q[0]}</nowiki>";
+                                       $hiero_content[$marker] = "<hiero>$content</hiero>";
                                }
-                               
-                               $stripped .= $state['nwunq'] . sprintf("%08X", $state['nwsecs']);
-                               $text = $q[1];
                        }
                }
 
-               if( $this->mOptions->getUseTeX() ) {
-                       while ( "" != $stripped ) {
-                               $p = preg_split( "/<\\s*math\\s*>/i", $stripped, 2 );
-                               $stripped2 .= $p[0];
-                               if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { 
-                                       $stripped = ""; 
+               if( $this->mOptions->getUseTeX() ){
+                       $text = Parser::extractTags("math", $text, $math_content, $uniq_prefix);
+                       foreach( $math_content as $marker => $content ){
+                               if( $render ){
+                                       $math_content[$marker] = renderMath( $content );
                                } else {
-                                       $q = preg_split( "/<\\/\\s*math\\s*>/i", $p[1], 2 );
-                                       ++$state['mathsecs'];
-
-                                       if ( $render ) {
-                                               $state['mathlist'][$state['mathsecs']] = renderMath($q[0]);
-                                       } else {
-                                               $state['mathlist'][$state['mathsecs']] = "<math>{$q[0]}</math>";
-                                       }
-                                       
-                                       $stripped2 .= $state['mathunq'] . sprintf("%08X", $state['mathsecs']);
-                                       $stripped = $q[1];
+                                       $math_content[$marker] = "<math>$content</math>";
                                }
                        }
-               } else {
-                       $stripped2 = $stripped;
                }
 
-               while ( "" != $stripped2 ) {
-                       $p = preg_split( "/<\\s*pre\\s*>/i", $stripped2, 2 );
-                       $stripped3 .= $p[0];
-                       if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { 
-                               $stripped2 = ""; 
+               $text = Parser::extractTags("pre", $text, $pre_content, $uniq_prefix);
+               foreach( $pre_content as $marker => $content ){
+                       if( $render ){
+                               $pre_content[$marker] = "<pre>" . wfEscapeHTMLTagsOnly( $content ) . "</pre>";
                        } else {
-                               $q = preg_split( "/<\\/\\s*pre\\s*>/i", $p[1], 2 );
-                               ++$state['presecs'];
-
-                               if ( $render ) {
-                                       $state['prelist'][$state['presecs']] = "<pre>". wfEscapeHTMLTagsOnly($q[0]). "</pre>\n";
-                               } else {
-                                       $state['prelist'][$state['presecs']] = "<pre>{$q[0]}</pre>";
-                               }
-                               
-                               $stripped3 .= $state['preunq'] . sprintf("%08X", $state['presecs']);
-                               $stripped2 = $q[1];
+                               $pre_content[$marker] = "<pre>$content</pre>";
                        }
                }
-               return $stripped3;
+
+               # Merge state with the pre-existing state, if there is one
+               if ( $state ) {
+                       $state['nowiki'] = $state['nowiki'] + $nowiki_content;
+                       $state['hiero'] = $state['hiero'] + $hiero_content;
+                       $state['math'] = $state['math'] + $math_content;
+                       $state['pre'] = $state['pre'] + $pre_content;
+               } else {
+                       $state = array(
+                         'nowiki' => $nowiki_content,
+                         'hiero' => $hiero_content,
+                         'math' => $math_content,
+                         'pre' => $pre_content,
+                         'item' => $item_content
+                       );
+               }
+               return $text;
        }
 
        function unstrip( $text, &$state )
        {
-               for ( $i = 1; $i <= $state['presecs']; ++$i ) {
-                       $text = str_replace( $state['preunq'] . sprintf("%08X", $i), $state['prelist'][$i], $text );
+               # Must expand in reverse order, otherwise nested tags will be corrupted
+               $contentDict = end( $state );
+               for ( $contentDict = end( $state ); $contentDict !== false; $contentDict = prev( $state ) ) {
+                       for ( $content = end( $contentDict ); $content !== false; $content = prev( $contentDict ) ) {
+                               $text = str_replace( key( $contentDict ), $content, $text );
+                       }
                }
 
-               for ( $i = 1; $i <= $state['mathsecs']; ++$i ) {
-                       $text = str_replace( $state['mathunq'] . sprintf("%08X", $i), $state['mathlist'][$i], $text );          
-               }
+               return $text;
+       }
 
-               for ( $i = 1; $i <= $state['nwsecs']; ++$i ) {
-                       $text = str_replace( $state['nwunq'] . sprintf("%08X", $i), $state['nwlist'][$i], $text );
+       # Add an item to the strip state
+       # Returns the unique tag which must be inserted into the stripped text
+       # The tag will be replaced with the original text in unstrip()
+
+       function insertStripItem( $text, &$state )
+       {
+               $rnd = UNIQ_PREFIX . '-item' . Parser::getRandomString();
+               if ( !$state ) {
+                       $state = array(
+                         'nowiki' => array(),
+                         'hiero' => array(),
+                         'math' => array(),
+                         'pre' => array(),
+                         'item' => array()
+                       );
                }
-               return $text;
+               $state['item'][$rnd] = $text;
+               return $rnd;
        }
 
        function categoryMagic ()
@@ -184,44 +261,35 @@ class Parser
                global $wgLang , $wgUser ;
                if ( !$this->mOptions->getUseCategoryMagic() ) return ;
                $id = $this->mTitle->getArticleID() ;
-               $cat = ucfirst ( wfMsg ( "category" ) ) ;
+               $cns = Namespace::getCategory() ;
+               if ( $this->mTitle->getNamespace() != $cns ) return "" ;
                $ti = $this->mTitle->getText() ;
-               $ti = explode ( ":" , $ti , 2 ) ;
-               if ( $cat != $ti[0] ) return "" ;
-               $r = "<br break=all>\n" ;
+               $r = "<br style=\"clear:both;\"/>\n";
 
                $articles = array() ;
                $parents = array () ;
                $children = array() ;
 
-
-#              $sk =& $this->mGetSkin();
                $sk =& $wgUser->getSkin() ;
 
-               $doesexist = false ;
-               if ( $doesexist ) {
-                       $sql = "SELECT l_from FROM links WHERE l_to={$id}" ;
-               } else {
-                       $sql = "SELECT cur_title,cur_namespace FROM cur,brokenlinks WHERE bl_to={$id} AND bl_from=cur_id" ;
-               }
+               $data = array () ;
+               $sql1 = "SELECT DISTINCT cur_title,cur_namespace FROM cur,links WHERE l_to={$id} AND l_from=cur_id";
+               $sql2 = "SELECT DISTINCT cur_title,cur_namespace FROM cur,brokenlinks WHERE bl_to={$id} AND bl_from=cur_id" ;
 
-               $res = wfQuery ( $sql, DB_READ ) ;
-               while ( $x = wfFetchObject ( $res ) )
+               $res = wfQuery ( $sql1, DB_READ ) ;
+               while ( $x = wfFetchObject ( $res ) ) $data[] = $x ;
+
+               $res = wfQuery ( $sql2, DB_READ ) ;
+               while ( $x = wfFetchObject ( $res ) ) $data[] = $x ;
+
+               foreach ( $data AS $x )
                {
-               #  $t = new Title ; 
-               #  $t->newFromDBkey ( $x->l_from ) ;
-               #  $t = $t->getText() ;
-                       if ( $doesexist ) {
-                               $t = $x->l_from ;
-                       } else {
-                               $t = $wgLang->getNsText ( $x->cur_namespace ) ;
-                               if ( $t != "" ) $t .= ":" ;
-                               $t .= $x->cur_title ;
-                       }
+                       $t = $wgLang->getNsText ( $x->cur_namespace ) ;
+                       if ( $t != "" ) $t .= ":" ;
+                       $t .= $x->cur_title ;
 
-                       $y = explode ( ":" , $t , 2 ) ;
-                       if ( count ( $y ) == 2 && $y[0] == $cat ) {
-                               array_push ( $children , $sk->makeLink ( $t , $y[1] ) ) ;
+                       if ( $x->cur_namespace == $cns ) {
+                               array_push ( $children , $sk->makeLink ( $t ) ) ;
                        } else {
                                array_push ( $articles , $sk->makeLink ( $t ) ) ;
                        }
@@ -240,7 +308,7 @@ class Parser
                if ( count ( $articles ) > 0 )
                {
                        asort ( $articles ) ;
-                       $h =  wfMsg( "category_header", $ti[1] );
+                       $h =  wfMsg( "category_header", $ti );
                        $r .= "<h2>{$h}</h2>\n" ;
                        $r .= implode ( ", " , $articles ) ;
                }
@@ -270,7 +338,7 @@ class Parser
        {
                if ( trim ( $t ) == "" ) return "" ; # Saves runtime ;-)
                $htmlattrs = $this->getHTMLattrs() ;
-         
+
                # Strip non-approved attributes from the tag
                $t = preg_replace(
                        "/(\\w+)(\\s*=\\s*([^\\s\">]+|\"[^\">]*\"))?/e",
@@ -279,7 +347,7 @@ class Parser
                # Strip javascript "expression" from stylesheets. Brute force approach:
                # If anythin offensive is found, all attributes of the HTML tag are dropped
 
-               if( preg_match( 
+               if( preg_match(
                        "/style\\s*=.*(expression|tps*:\/\/|url\\s*\().*/is",
                        wfMungeToUtf8( $t ) ) )
                {
@@ -298,11 +366,11 @@ class Parser
                        $ltr = array () ; # tr attributes
                        foreach ( $t AS $k => $x )
                        {
-                               $x = rtrim ( $x ) ;
+                               $x = trim ( $x ) ;
                                $fc = substr ( $x , 0 , 1 ) ;
                                if ( "{|" == substr ( $x , 0 , 2 ) )
                                {
-                                       $t[$k] = "<table " . $this->fixTagAttributes ( substr ( $x , 3 ) ) . ">" ;
+                                       $t[$k] = "\n<table " . $this->fixTagAttributes ( substr ( $x , 3 ) ) . ">" ;
                                        array_push ( $td , false ) ;
                                        array_push ( $ltd , "" ) ;
                                        array_push ( $tr , false ) ;
@@ -319,7 +387,7 @@ class Parser
                                        $t[$k] = $z ;
                                }
                                /*      else if ( "|_" == substr ( $x , 0 , 2 ) ) # Caption
-                                               { 
+                                               {
                                                $z = trim ( substr ( $x , 2 ) ) ;
                                                $t[$k] = "<caption>{$z}</caption>\n" ;
                                                }*/
@@ -353,7 +421,7 @@ class Parser
                                        {
                                                $z = "" ;
                                                if ( $fc != "+" )
-                                               {  
+                                               {
                                                        $tra = array_pop ( $ltr ) ;
                                                        if ( !array_pop ( $tr ) ) $z = "<tr {$tra}>\n" ;
                                                        array_push ( $tr , true ) ;
@@ -362,9 +430,9 @@ class Parser
 
                                                $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" ;
+                                               if ( $fc == "|" ) $l = "td" ;
+                                               else if ( $fc == "!" ) $l = "th" ;
+                                               else if ( $fc == "+" ) $l = "caption" ;
                                                else $l = "" ;
                                                array_push ( $ltd , $l ) ;
                                                $y = explode ( "|" , $theline , 2 ) ;
@@ -389,38 +457,32 @@ class Parser
                return $t ;
        }
 
-       # Well, OK, it's actually about 14 passes.  But since all the
-       # hard lifting is done inside PHP's regex code, it probably
-       # wouldn't speed things up much to add a real parser.
-       #
-       function doWikiPass2( $text, $linestart )
+       function internalParse( $text, $linestart, $args = array() )
        {
-               $fname = "OutputPage::doWikiPass2";
+               $fname = "Parser::internalParse";
                wfProfileIn( $fname );
-               
+
                $text = $this->removeHTMLtags( $text );
-               $text = $this->replaceVariables( $text );
+               $text = $this->replaceVariables( $text, $args );
 
                # $text = preg_replace( "/(^|\n)-----*/", "\\1<hr>", $text );
-               $text = str_replace ( "<HR>", "<hr>", $text );
 
                $text = $this->doHeadings( $text );
-               $text = $this->doBlockLevels( $text, $linestart );
-               
                if($this->mOptions->getUseDynamicDates()) {
                        global $wgDateFormatter;
                        $text = $wgDateFormatter->reformat( $this->mOptions->getDateFormat(), $text );
                }
-
                $text = $this->replaceExternalLinks( $text );
-               $text = $this->replaceInternalLinks ( $text );
+               $text = $this->doTokenizedParser ( $text );
                $text = $this->doTableStuff ( $text ) ;
-
                $text = $this->formatHeadings( $text );
-
                $sk =& $this->mOptions->getSkin();
                $text = $sk->transformContent( $text );
-               $text .= $this->categoryMagic () ;
+
+               if ( !isset ( $this->categoryMagicDone ) ) {
+                  $text .= $this->categoryMagic () ;
+                  $this->categoryMagicDone = true ;
+                  }
 
                wfProfileOut( $fname );
                return $text;
@@ -431,7 +493,7 @@ class Parser
        {
                for ( $i = 6; $i >= 1; --$i ) {
                        $h = substr( "======", 0, $i );
-                       $text = preg_replace( "/^{$h}([^=]+){$h}(\\s|$)/m",
+                       $text = preg_replace( "/^{$h}(.+){$h}(\\s|$)/m",
                          "<h{$i}>\\1</h{$i}>\\2", $text );
                }
                return $text;
@@ -443,7 +505,7 @@ class Parser
 
        /* private */ function replaceExternalLinks( $text )
        {
-               $fname = "OutputPage::replaceExternalLinks";
+               $fname = "Parser::replaceExternalLinks";
                wfProfileIn( $fname );
                $text = $this->subReplaceExternalLinks( $text, "http", true );
                $text = $this->subReplaceExternalLinks( $text, "https", true );
@@ -455,18 +517,18 @@ class Parser
                wfProfileOut( $fname );
                return $text;
        }
-       
+
        /* private */ function subReplaceExternalLinks( $s, $protocol, $autonumber )
        {
                $unique = "4jzAfzB8hNvf4sqyO9Edd8pSmk9rE2in0Tgw3";
                $uc = "A-Za-z0-9_\\/~%\\-+&*#?!=()@\\x80-\\xFF";
-               
-               # this is  the list of separators that should be ignored if they 
+
+               # this is  the list of separators that should be ignored if they
                # are the last character of an URL but that should be included
                # if they occur within the URL, e.g. "go to www.foo.com, where .."
                # in this case, the last comma should not become part of the URL,
                # but in "www.foo.com/123,2342,32.htm" it should.
-               $sep = ",;\.:";   
+               $sep = ",;\.:";
                $fnc = "A-Za-z0-9_.,~%\\-+&;#*?!=()@\\x80-\\xFF";
                $images = "gif|png|jpg|jpeg";
 
@@ -475,7 +537,7 @@ class Parser
                # that the content of the string should be inserted there).
                $e1 = "/(^|[^\\[])({$protocol}:)([{$uc}{$sep}]+)\\/([{$fnc}]+)\\." .
                  "((?i){$images})([^{$uc}]|$)/";
-                 
+
                $e2 = "/(^|[^\\[])({$protocol}:)(([".$uc."]|[".$sep."][".$uc."])+)([^". $uc . $sep. "]|[".$sep."]|$)/";
                $sk =& $this->mOptions->getSkin();
 
@@ -505,13 +567,17 @@ class Parser
                        } else if ( preg_match( $e2, $line, $m ) ) {
                                $link = "{$protocol}:{$m[1]}";
                                $text = $m[2];
-                               $trail = $m[3];                 
+                               $trail = $m[3];
                        } else {
                                $s .= "[{$protocol}:" . $line;
                                continue;
                        }
-                       if ( $this->mOptions->getPrintable() ) $paren = " (<i>" . htmlspecialchars ( $link ) . "</i>)";
-                       else $paren = "";
+                       if( $link == $text || preg_match( "!$protocol://" . preg_quote( $text, "/" ) . "/?$!", $link ) ) {
+                               $paren = "";
+                       } else {
+                               # Expand the URL for printable version
+                               $paren = "<span class='urlexpansion'> (<i>" . htmlspecialchars ( $link ) . "</i>)</span>";
+                       }
                        $la = $sk->getExternalLinkAttributes( $link, $text );
                        $s .= "<a href='{$link}'{$la}>{$text}</a>{$paren}{$trail}";
 
@@ -521,8 +587,8 @@ class Parser
 
        /* private */ function handle3Quotes( &$state, $token )
        {
-               if ( $state["strong"] ) {
-                       if ( $state["em"] && $state["em"] > $state["strong"] )
+               if ( $state["strong"] !== false ) {
+                       if ( $state["em"] !== false && $state["em"] > $state["strong"] )
                        {
                                # ''' lala ''lala '''
                                $s = "</em></strong><em>";
@@ -532,15 +598,15 @@ class Parser
                        $state["strong"] = FALSE;
                } else {
                        $s = "<strong>";
-                       $state["strong"] = $token["pos"];
+                       $state["strong"] = isset($token["pos"]) ? $token["pos"] : true;
                }
                return $s;
        }
 
        /* private */ function handle2Quotes( &$state, $token )
        {
-               if ( $state["em"] ) {
-                       if ( $state["strong"] && $state["strong"] > $state["em"] )
+               if ( $state["em"] !== false ) {
+                       if ( $state["strong"] !== false && $state["strong"] > $state["em"] )
                        {
                                # ''lala'''lala'' ....'''
                                $s = "</strong></em><strong>";
@@ -550,46 +616,49 @@ class Parser
                        $state["em"] = FALSE;
                } else {
                        $s = "<em>";
-                       $state["em"] = $token["pos"];
+                       $state["em"] = isset($token["pos"]) ? $token["pos"] : true;
+
                }
                return $s;
        }
-       
+
        /* private */ function handle5Quotes( &$state, $token )
        {
-               if ( $state["em"] && $state["strong"] ) {
+               $s = "";
+               if ( $state["em"] !== false && $state["strong"] !== false ) {
                        if ( $state["em"] < $state["strong"] ) {
                                $s .= "</strong></em>";
                        } else {
                                $s .= "</em></strong>";
                        }
                        $state["strong"] = $state["em"] = FALSE;
-               } elseif ( $state["em"] ) {
+               } elseif ( $state["em"] !== false ) {
                        $s .= "</em><strong>";
                        $state["em"] = FALSE;
                        $state["strong"] = $token["pos"];
-               } elseif ( $state["strong"] ) {
+               } elseif ( $state["strong"] !== false ) {
                        $s .= "</strong><em>";
                        $state["strong"] = FALSE;
                        $state["em"] = $token["pos"];
                } else { # not $em and not $strong
                        $s .= "<strong><em>";
-                       $state["strong"] = $state["em"] = $token["pos"];
+                       $state["strong"] = $state["em"] = isset($token["pos"]) ? $token["pos"] : true;
                }
                return $s;
        }
 
-       /* private */ function replaceInternalLinks( $str )
+       /* private */ function doTokenizedParser( $str )
        {
                global $wgLang; # for language specific parser hook
 
                $tokenizer=Tokenizer::newFromString( $str );
                $tokenStack = array();
-               
+
                $s="";
                $state["em"]      = FALSE;
                $state["strong"]  = FALSE;
                $tagIsOpen = FALSE;
+               $threeopen = false;
 
                # The tokenizer splits the text into tokens and returns them one by one.
                # Every call to the tokenizer returns a new token.
@@ -601,6 +670,9 @@ class Parser
                                        # simple text with no further markup
                                        $txt = $token["text"];
                                        break;
+                               case "[[[":
+                                       # remember the tag opened with 3 [
+                                       $threeopen = true;
                                case "[[":
                                        # link opening tag.
                                        # FIXME : Treat orphaned open tags (stack not empty when text is over)
@@ -608,10 +680,13 @@ class Parser
                                        array_push( $tokenStack, $token );
                                        $txt="";
                                        break;
+
+                               case "]]]":
                                case "]]":
                                        # link close tag.
                                        # get text from stack, glue it together, and call the code to handle a
                                        # link
+
                                        if ( count( $tokenStack ) == 0 )
                                        {
                                                # stack empty. Found a ]] without an opening [[
@@ -619,32 +694,42 @@ class Parser
                                        } else {
                                                $linkText = "";
                                                $lastToken = array_pop( $tokenStack );
-                                               while ( $lastToken["type"] != "[[" )
+                                               while ( !(($lastToken["type"] == "[[[") or ($lastToken["type"] == "[[")) )
                                                {
                                                        if( !empty( $lastToken["text"] ) ) {
                                                                $linkText = $lastToken["text"] . $linkText;
                                                        }
                                                        $lastToken = array_pop( $tokenStack );
                                                }
+
                                                $txt = $linkText ."]]";
+
                                                if( isset( $lastToken["text"] ) ) {
                                                        $prefix = $lastToken["text"];
                                                } else {
                                                        $prefix = "";
                                                }
                                                $nextToken = $tokenizer->previewToken();
-                                               if ( $nextToken["type"] == "text" ) 
+                                               if ( $nextToken["type"] == "text" )
                                                {
                                                        # Preview just looks at it. Now we have to fetch it.
                                                        $nextToken = $tokenizer->nextToken();
                                                        $txt .= $nextToken["text"];
                                                }
-                                               $txt = $this->handleInternalLink( $txt, $prefix );
+                                               $txt = $this->handleInternalLink( $this->unstrip($txt,$this->mStripState), $prefix );
+
+                                               # did the tag start with 3 [ ?
+                                               if($threeopen) {
+                                                       # show the first as text
+                                                       $txt = "[".$txt;
+                                                       $threeopen=false;
+                                               }
+
                                        }
                                        $tagIsOpen = (count( $tokenStack ) != 0);
                                        break;
                                case "----":
-                                       $txt = "\n<hr>\n";
+                                       $txt = "\n<hr />\n";
                                        break;
                                case "'''":
                                        # This and the three next ones handle quotes
@@ -716,7 +801,7 @@ class Parser
        {
                global $wgLang, $wgLinkCache;
                global $wgNamespacesWithSubpages, $wgLanguageCode;
-               static $fname = "OutputPage::replaceInternalLinks" ;
+               static $fname = "Parser::handleInternalLink" ;
                wfProfileIn( $fname );
 
                wfProfileIn( "$fname-setup" );
@@ -732,7 +817,7 @@ class Parser
                #$e2 = "/^(.*)\\b(\\w+)\$/suD";
                #$e2 = "/^(.*\\s)(\\S+)\$/suD";
                static $e2 = '/^(.*\s)([a-zA-Z\x80-\xff]+)$/sD';
-               
+
 
                # Special and Media are pseudo-namespaces; no pages actually exist in them
                static $image = FALSE;
@@ -742,21 +827,21 @@ class Parser
                if ( !$image ) { $image = Namespace::getImage(); }
                if ( !$special ) { $special = Namespace::getSpecial(); }
                if ( !$media ) { $media = Namespace::getMedia(); }
-               if ( !$category ) { $category = wfMsg ( "category" ) ; }
-               
+               if ( !$category ) { $category = Namespace::getCategory(); ; }
+
                $nottalk = !Namespace::isTalk( $this->mTitle->getNamespace() );
 
                wfProfileOut( "$fname-setup" );
                $s = "";
-               
+
                if ( preg_match( $e1, $line, $m ) ) { # page with normal text or alt
                        $text = $m[2];
-                       $trail = $m[3];                         
+                       $trail = $m[3];
                } else { # Invalid form; output directly
                        $s .= $prefix . "[[" . $line ;
                        return $s;
                }
-               
+
                /* Valid link forms:
                Foobar -- normal
                :Foobar -- override special treatment of prefix (images, language links)
@@ -767,7 +852,7 @@ class Parser
                $noforce = ($c != ":");
                if( $c == "/" ) { # subpage
                        if(substr($m[1],-1,1)=="/") {                 # / at end means we don't want the slash to be shown
-                               $m[1]=substr($m[1],1,strlen($m[1])-2); 
+                               $m[1]=substr($m[1],1,strlen($m[1])-2);
                                $noslash=$m[1];
                        } else {
                                $noslash=substr($m[1],1);
@@ -775,7 +860,7 @@ class Parser
                        if($wgNamespacesWithSubpages[$this->mTitle->getNamespace()]) { # subpages allowed here
                                $link = $this->mTitle->getPrefixedText(). "/" . trim($noslash);
                                if( "" == $text ) {
-                                       $text= $m[1]; 
+                                       $text= $m[1];
                                } # this might be changed for ugliness reasons
                        } else {
                                $link = $noslash; # no subpage allowed, use standard link
@@ -796,34 +881,30 @@ class Parser
                $ns = $nt->getNamespace();
                $iw = $nt->getInterWiki();
                if( $noforce ) {
-                       if( $iw && $wgInterwikiMagic && $nottalk && $wgLang->getLanguageName( $iw ) ) {
+                       if( $iw && $this->mOptions->getInterwikiMagic() && $nottalk && $wgLang->getLanguageName( $iw ) ) {
                                array_push( $this->mOutput->mLanguageLinks, $nt->getPrefixedText() );
-                               $s .= $prefix . $trail;
-                               return $s;
+                               return (trim($s) == '')? '': $s;
                        }
                        if( $ns == $image ) {
                                $s .= $prefix . $sk->makeImageLinkObj( $nt, $text ) . $trail;
                                $wgLinkCache->addImageLinkObj( $nt );
                                return $s;
                        }
+                       if ( $ns == $category ) {
+                               $t = $nt->getText() ;
+                               $nnt = Title::newFromText ( Namespace::getCanonicalName($category).":".$t ) ;
+                               $t = $sk->makeLinkObj( $nnt, $t, "", "" , $prefix );
+                               $this->mOutput->mCategoryLinks[] = $t ;
+                               $s .= $prefix . $trail ;
+                               return $s ;
+                       }
                }
                if( ( $nt->getPrefixedText() == $this->mTitle->getPrefixedText() ) &&
                    ( strpos( $link, "#" ) == FALSE ) ) {
                        $s .= $prefix . "<strong>" . $text . "</strong>" . $trail;
                        return $s;
                }
-               if ( $ns == $category && $this->mOptions->getUseCategoryMagic() ) {
-                       $t = explode ( ":" , $nt->getText() ) ;
-                       array_shift ( $t ) ;
-                       $t = implode ( ":" , $t ) ;
-                       $t = $wgLang->ucFirst ( $t ) ;
-#                      $t = $sk->makeKnownLink( $category.":".$t, $t, "", $trail , $prefix );
-                       $nnt = Title::newFromText ( $category.":".$t ) ;
-                       $t = $sk->makeLinkObj( $nnt, $t, "", $trail , $prefix );
-                       $this->mCategoryLinks[] = $t ;
-                       $s .= $prefix . $trail ;
-                       return $s ;         
-               }
+
                if( $ns == $media ) {
                        $s .= $prefix . $sk->makeMediaLinkObj( $nt, $text ) . $trail;
                        $wgLinkCache->addImageLinkObj( $nt );
@@ -843,12 +924,12 @@ class Parser
        /* private */ function closeParagraph()
        {
                $result = "";
-               if ( 0 != strcmp( "p", $this->mLastSection ) &&
-                 0 != strcmp( "", $this->mLastSection ) ) {
-                       $result = "</" . $this->mLastSection  . ">";
+               if ( '' != $this->mLastSection ) {
+                       $result = "</" . $this->mLastSection  . ">\n";
                }
+               $this->mInPre = false;
                $this->mLastSection = "";
-               return $result."\n";
+               return $result;
        }
        # getCommon() returns the length of the longest common substring
        # of both arguments, starting at the beginning of both.
@@ -918,33 +999,46 @@ class Parser
 
        /* private */ function doBlockLevels( $text, $linestart )
        {
-               $fname = "OutputPage::doBlockLevels";
+               $fname = "Parser::doBlockLevels";
                wfProfileIn( $fname );
                # Parsing through the text line by line.  The main thing
                # happening here is handling of block-level elements p, pre,
                # and making lists from lines starting with * # : etc.
                #
                $a = explode( "\n", $text );
-               $text = $lastPref = "";
+
+               $lastPref = $text = $lastLine = '';
                $this->mDTopen = $inBlockElem = false;
+               $npl = 0;
+               $pstack = false;
 
                if ( ! $linestart ) { $text .= array_shift( $a ); }
                foreach ( $a as $t ) {
-                       if ( "" != $text ) { $text .= "\n"; }
-
                        $oLine = $t;
                        $opl = strlen( $lastPref );
-                       $npl = strspn( $t, "*#:;" );
-                       $pref = substr( $t, 0, $npl );
-                       $pref2 = str_replace( ";", ":", $pref );
-                       $t = substr( $t, $npl );
+                       $preCloseMatch = preg_match("/<\\/pre/i", $t );
+                       $preOpenMatch = preg_match("/<pre/i", $t );
+                       if (!$this->mInPre) {
+                               $this->mInPre = !empty($preOpenMatch);
+                       }
+                       if ( !$this->mInPre ) {
+                               $npl = strspn( $t, "*#:;" );
+                               $pref = substr( $t, 0, $npl );
+                               $pref2 = str_replace( ";", ":", $pref );
+                               $t = substr( $t, $npl );
+                       } else {
+                               $npl = 0;
+                               $pref = $pref2 = '';
+                       }
 
+                       // list generation
                        if ( 0 != $npl && 0 == strcmp( $lastPref, $pref2 ) ) {
                                $text .= $this->nextItem( substr( $pref, -1 ) );
+                               if ( $pstack ) { $pstack = false; }
 
                                if ( ";" == substr( $pref, -1 ) ) {
                                        $cpos = strpos( $t, ":" );
-                                       if ( ! ( false === $cpos ) ) {
+                                       if ( false !== $cpos ) {
                                                $term = substr( $t, 0, $cpos );
                                                $text .= $term . $this->nextItem( ":" );
                                                $t = substr( $t, $cpos + 1 );
@@ -952,6 +1046,7 @@ class Parser
                                }
                        } else if (0 != $npl || 0 != $opl) {
                                $cpl = $this->getCommon( $pref, $lastPref );
+                               if ( $pstack ) { $pstack = false; }
 
                                while ( $cpl < $opl ) {
                                        $text .= $this->closeList( $lastPref{$opl-1} );
@@ -976,111 +1071,363 @@ class Parser
                                }
                                $lastPref = $pref2;
                        }
-                       if ( 0 == $npl ) { # No prefix--go to paragraph mode
-                               if ( preg_match(
-                                 "/(<table|<blockquote|<h1|<h2|<h3|<h4|<h5|<h6)/i", $t ) ) {
+                       if ( 0 == $npl ) { # No prefix (not in list)--go to paragraph mode
+                               $uniq_prefix = UNIQ_PREFIX;
+                               // XXX: use a stack for nestable elements like span, table and div
+                               $openmatch = preg_match("/(<table|<blockquote|<h1|<h2|<h3|<h4|<h5|<h6|<div|<pre|<tr|<td|<p|<ul|<li)/i", $t );
+                               $closematch = preg_match(
+                                       "/(<\\/table|<\\/blockquote|<\\/h1|<\\/h2|<\\/h3|<\\/h4|<\\/h5|<\\/h6|".
+                                       "<\\/div|<hr|<\\/td|<\\/pre|<\\/p|".$uniq_prefix."-pre|<\\/li|<\\/ul)/i", $t );
+                               if ( $openmatch or $closematch ) {
+                                       if ( $pstack ) { $pstack = false; }
                                        $text .= $this->closeParagraph();
-                                       $inBlockElem = true;
-                               }
-                               if ( ! $inBlockElem ) {
-                                       if ( " " == $t{0} ) {
-                                               $newSection = "pre";
-                                               # $t = wfEscapeHTML( $t );
+                                       if($preOpenMatch and !$preCloseMatch) {
+                                               $this->mInPre = true;   
+                                       }
+                                       if ( $closematch  ) {
+                                               $inBlockElem = false;
+                                       } else {
+                                               $inBlockElem = true;
                                        }
-                                       else { $newSection = "p"; }
-
-                                       if ( 0 == strcmp( "", trim( $oLine ) ) ) {
-                                               $text .= $this->closeParagraph();
-                                               $text .= "<" . $newSection . ">";
-                                       } else if ( 0 != strcmp( $this->mLastSection,
-                                         $newSection ) ) {
-                                               $text .= $this->closeParagraph();
-                                               if ( 0 != strcmp( "p", $newSection ) ) {
-                                                       $text .= "<" . $newSection . ">";
+                               } else if ( !$inBlockElem ) {
+                                       if ( " " == $t{0} ) {
+                                               // pre
+                                               if ($this->mLastSection != 'pre') {
+                                                       $pstack = false;
+                                                       $text .= $this->closeParagraph().'<pre>';
+                                                       $this->mLastSection = 'pre';
+                                               }
+                                       } else {
+                                               // paragraph
+                                               if ( '' == trim($t) ) {
+                                                       if ( $pstack ) {
+                                                               $text .= $pstack.'<br/>';
+                                                               $pstack = false;
+                                                               $this->mLastSection = 'p';
+                                                       } else {
+                                                               if ($this->mLastSection != 'p' ) {
+                                                                       $text .= $this->closeParagraph();
+                                                                       $this->mLastSection = '';
+                                                                       $pstack = "<p>";
+                                                               } else {
+                                                                       $pstack = '</p><p>';
+                                                               }
+                                                       }
+                                               } else {
+                                                       if ( $pstack ) {
+                                                               $text .= $pstack;
+                                                               $pstack = false;
+                                                               $this->mLastSection = 'p';
+                                                       } else if ($this->mLastSection != 'p') {
+                                                               $text .= $this->closeParagraph().'<p>';
+                                                               $this->mLastSection = 'p';
+                                                       }
                                                }
                                        }
-                                       $this->mLastSection = $newSection;
-                               }
-                               if ( $inBlockElem &&
-                                 preg_match( "/(<\\/table|<\\/blockquote|<\\/h1|<\\/h2|<\\/h3|<\\/h4|<\\/h5|<\\/h6)/i", $t ) ) {
-                                       $inBlockElem = false;
                                }
                        }
-                       $text .= $t;
+                       if ($pstack === false) {
+                               $text .= $t."\n";
+                       }
                }
                while ( $npl ) {
                        $text .= $this->closeList( $pref2{$npl-1} );
                        --$npl;
                }
                if ( "" != $this->mLastSection ) {
-                       if ( "p" != $this->mLastSection ) {
-                               $text .= "</" . $this->mLastSection . ">";
-                       }
+                       $text .= "</" . $this->mLastSection . ">";
                        $this->mLastSection = "";
                }
+
                wfProfileOut( $fname );
                return $text;
        }
 
-       /* private */ function replaceVariables( $text )
+       function getVariableValue( $index ) {
+               global $wgLang, $wgSitename, $wgServer;
+
+               switch ( $index ) {
+                       case MAG_CURRENTMONTH:
+                               return date( "m" );
+                       case MAG_CURRENTMONTHNAME:
+                               return $wgLang->getMonthName( date("n") );
+                       case MAG_CURRENTMONTHNAMEGEN:
+                               return $wgLang->getMonthNameGen( date("n") );
+                       case MAG_CURRENTDAY:
+                               return date("j");
+                       case MAG_CURRENTDAYNAME:
+                               return $wgLang->getWeekdayName( date("w")+1 );
+                       case MAG_CURRENTYEAR:
+                               return date( "Y" );
+                       case MAG_CURRENTTIME:
+                               return $wgLang->time( wfTimestampNow(), false );
+                       case MAG_NUMBEROFARTICLES:
+                               return wfNumberOfArticles();
+                       case MAG_SITENAME:
+                               return $wgSitename;
+                       case MAG_SERVER:
+                               return $wgServer;
+                       default:
+                               return NULL;
+               }
+       }
+
+       function initialiseVariables()
+       {
+               global $wgVariableIDs;
+               $this->mVariables = array();
+               foreach ( $wgVariableIDs as $id ) {
+                       $mw =& MagicWord::get( $id );
+                       $mw->addToArray( $this->mVariables, $this->getVariableValue( $id ) );
+               }
+       }
+
+       /* private */ function replaceVariables( $text, $args = array() )
        {
-               global $wgLang, $wgCurOut;
-               $fname = "OutputPage::replaceVariables";
+               global $wgLang, $wgScript, $wgArticlePath;
+
+               $fname = "Parser::replaceVariables";
                wfProfileIn( $fname );
 
-               $magic = array();
-
-               # Basic variables
-               # See Language.php for the definition of each magic word
-               # As with sigs, this uses the server's local time -- ensure 
-               # this is appropriate for your audience!
-
-               $magic[MAG_CURRENTMONTH] = date( "m" );
-               $magic[MAG_CURRENTMONTHNAME] = $wgLang->getMonthName( date("n") );
-               $magic[MAG_CURRENTMONTHNAMEGEN] = $wgLang->getMonthNameGen( date("n") );
-               $magic[MAG_CURRENTDAY] = date("j");
-               $magic[MAG_CURRENTDAYNAME] = $wgLang->getWeekdayName( date("w")+1 );
-               $magic[MAG_CURRENTYEAR] = date( "Y" );
-               $magic[MAG_CURRENTTIME] = $wgLang->time( wfTimestampNow(), false );
-               
-               $this->mOutput->mContainsOldMagic += MagicWord::replaceMultiple($magic, $text, $text);
-
-               $mw =& MagicWord::get( MAG_NUMBEROFARTICLES );
-               if ( $mw->match( $text ) ) {
-                       $v = wfNumberOfArticles();
-                       $text = $mw->replace( $v, $text );
-                       if( $mw->getWasModified() ) { $this->mOutput->mContainsOldMagic++; }
-               }
-
-               # "Variables" with an additional parameter e.g. {{MSG:wikipedia}}
-               # The callbacks are at the bottom of this file
-               $wgCurOut = $this;
-               $mw =& MagicWord::get( MAG_MSG );
-               $text = $mw->substituteCallback( $text, "wfReplaceMsgVar" );
-               if( $mw->getWasModified() ) { $this->mContainsNewMagic++; }
-
-               $mw =& MagicWord::get( MAG_MSGNW );
-               $text = $mw->substituteCallback( $text, "wfReplaceMsgnwVar" );
-               if( $mw->getWasModified() ) { $this->mContainsNewMagic++; }
+               $bail = false;
+               if ( !$this->mVariables ) {
+                       $this->initialiseVariables();
+               }
+               $titleChars = Title::legalChars();
+               $regex = "/(\\n?){{([$titleChars]*?)(\\|.*?|)}}/s";
+
+               # This function is called recursively. To keep track of arguments we need a stack:
+               array_push( $this->mArgStack, $args );
+
+               # PHP global rebinding syntax is a bit weird, need to use the GLOBALS array
+               $GLOBALS['wgCurParser'] =& $this;
+               $text = preg_replace_callback( $regex, "wfBraceSubstitution", $text );
+
+               array_pop( $this->mArgStack );
 
-               wfProfileOut( $fname );
                return $text;
        }
 
+       function braceSubstitution( $matches )
+       {
+               global $wgLinkCache, $wgLang;
+               $fname = "Parser::braceSubstitution";
+               $found = false;
+               $nowiki = false;
+               $title = NULL;
+
+               # $newline is an optional newline character before the braces
+               # $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
+
+               $newline = $matches[1];
+               $part1 = $matches[2];
+               # If the third subpattern matched anything, it will start with |
+               if ( $matches[3] !== "" ) {
+                       $args = explode( "|", substr( $matches[3], 1 ) );
+               } else {
+                       $args = array();
+               }
+               $argc = count( $args );
+
+               # SUBST
+               $mwSubst =& MagicWord::get( MAG_SUBST );
+               if ( $mwSubst->matchStartAndRemove( $part1 ) ) {
+                       if ( $this->mOutputType != OT_WIKI ) {
+                               # Invalid SUBST not replaced at PST time
+                               # Return without further processing
+                               $text = $matches[0];
+                               $found = true;
+                       }
+               } elseif ( $this->mOutputType == OT_WIKI ) {
+                       # SUBST not found in PST pass, do nothing
+                       $text = $matches[0];
+                       $found = true;
+               }
+
+               # MSG, MSGNW and INT
+               if ( !$found ) {
+                       # Check for MSGNW:
+                       $mwMsgnw =& MagicWord::get( MAG_MSGNW );
+                       if ( $mwMsgnw->matchStartAndRemove( $part1 ) ) {
+                               $nowiki = true;
+                       } else {
+                               # Remove obsolete MSG:
+                               $mwMsg =& MagicWord::get( MAG_MSG );
+                               $mwMsg->matchStartAndRemove( $part1 );
+                       }
+
+                       # Check if it is an internal message
+                       $mwInt =& MagicWord::get( MAG_INT );
+                       if ( $mwInt->matchStartAndRemove( $part1 ) ) {
+                               if ( $this->incrementIncludeCount( "int:$part1" ) ) {
+                                       $text = wfMsgReal( $part1, $args, true );
+                                       $found = true;
+                               }
+                       }
+               }
+
+               # NS
+               if ( !$found ) {
+                       # Check for NS: (namespace expansion)
+                       $mwNs = MagicWord::get( MAG_NS );
+                       if ( $mwNs->matchStartAndRemove( $part1 ) ) {
+                               if ( intval( $part1 ) ) {
+                                       $text = $wgLang->getNsText( intval( $part1 ) );
+                                       $found = true;
+                               } else {
+                                       $index = Namespace::getCanonicalIndex( strtolower( $part1 ) );
+                                       if ( !is_null( $index ) ) {
+                                               $text = $wgLang->getNsText( $index );
+                                               $found = true;
+                                       }
+                               }
+                       }
+               }
+
+               # LOCALURL and LOCALURLE
+               if ( !$found ) {
+                       $mwLocal = MagicWord::get( MAG_LOCALURL );
+                       $mwLocalE = MagicWord::get( MAG_LOCALURLE );
+
+                       if ( $mwLocal->matchStartAndRemove( $part1 ) ) {
+                               $func = 'getLocalURL';
+                       } elseif ( $mwLocalE->matchStartAndRemove( $part1 ) ) {
+                               $func = 'escapeLocalURL';
+                       } else {
+                               $func = '';
+                       }
+
+                       if ( $func !== '' ) {
+                               $title = Title::newFromText( $part1 );
+                               if ( !is_null( $title ) ) {
+                                       if ( $argc > 0 ) {
+                                               $text = $title->$func( $args[0] );
+                                       } else {
+                                               $text = $title->$func();
+                                       }
+                                       $found = true;
+                               }
+                       }
+               }
+
+               # Internal variables
+               if ( !$found && array_key_exists( $part1, $this->mVariables ) ) {
+                       $text = $this->mVariables[$part1];
+                       $found = true;
+                       $this->mOutput->mContainsOldMagic = true;
+               }
+
+               # Arguments input from the caller
+               $inputArgs = end( $this->mArgStack );
+               if ( !$found && array_key_exists( $part1, $inputArgs ) ) {
+                       $text = $inputArgs[$part1];
+                       $found = true;
+               }
+
+               # Load from database
+               if ( !$found ) {
+                       $title = Title::newFromText( $part1, NS_TEMPLATE );
+                       if ( !is_null( $title ) && !$title->isExternal() ) {
+                               # Check for excessive inclusion
+                               $dbk = $title->getPrefixedDBkey();
+                               if ( $this->incrementIncludeCount( $dbk ) ) {
+                                       $article = new Article( $title );
+                                       $articleContent = $article->getContentWithoutUsingSoManyDamnGlobals();
+                                       if ( $articleContent !== false ) {
+                                               $found = true;
+                                               $text = $articleContent;
+
+                                       }
+                               }
+
+                               # If the title is valid but undisplayable, make a link to it
+                               if ( $this->mOutputType == OT_HTML && !$found ) {
+                                       $text = "[[" . $title->getPrefixedText() . "]]";
+                                       $found = true;
+                               }
+                       }
+               }
+
+               # Recursive parsing, escaping and link table handling
+               # Only for HTML output
+               if ( $nowiki && $found && $this->mOutputType == OT_HTML ) {
+                       $text = wfEscapeWikiText( $text );
+               } elseif ( $this->mOutputType == OT_HTML && $found ) {
+                       # Clean up argument array
+                       $assocArgs = array();
+                       $index = 1;
+                       foreach( $args as $arg ) {
+                               $eqpos = strpos( $arg, "=" );
+                               if ( $eqpos === false ) {
+                                       $assocArgs[$index++] = $arg;
+                               } else {
+                                       $name = trim( substr( $arg, 0, $eqpos ) );
+                                       $value = trim( substr( $arg, $eqpos+1 ) );
+                                       if ( $value === false ) {
+                                               $value = "";
+                                       }
+                                       if ( $name !== false ) {
+                                               $assocArgs[$name] = $value;
+                                       }
+                               }
+                       }
+
+                       # Do not enter included links in link table
+                       if ( !is_null( $title ) ) {
+                               $wgLinkCache->suspend();
+                       }
+
+                       # Run full parser on the included text
+                       $text = $this->strip( $text, $this->mStripState );
+                       $text = $this->internalParse( $text, (bool)$newline, $assocArgs );
+
+                       # Add the result to the strip state for re-inclusion after
+                       # the rest of the processing
+                       $text = $this->insertStripItem( $text, $this->mStripState );
+
+                       # Resume the link cache and register the inclusion as a link
+                       if ( !is_null( $title ) ) {
+                               $wgLinkCache->resume();
+                               $wgLinkCache->addLinkObj( $title );
+                       }
+               }
+
+               if ( !$found ) {
+                       return $matches[0];
+               } else {
+                       return $newline . $text;
+               }
+       }
+
+       # Returns true if the function is allowed to include this entity
+       function incrementIncludeCount( $dbk )
+       {
+               if ( !array_key_exists( $dbk, $this->mIncludeCount ) ) {
+                       $this->mIncludeCount[$dbk] = 0;
+               }
+               if ( ++$this->mIncludeCount[$dbk] <= MAX_INCLUDE_REPEAT ) {
+                       return true;
+               } else {
+                       return false;
+               }
+       }
+
+
        # Cleans up HTML, removes dangerous tags and attributes
        /* private */ function removeHTMLtags( $text )
        {
-               $fname = "OutputPage::removeHTMLtags";
+               $fname = "Parser::removeHTMLtags";
                wfProfileIn( $fname );
                $htmlpairs = array( # Tags that must be closed
-                       "b", "i", "u", "font", "big", "small", "sub", "sup", "h1",
+                       "b", "del", "i", "ins", "u", "font", "big", "small", "sub", "sup", "h1",
                        "h2", "h3", "h4", "h5", "h6", "cite", "code", "em", "s",
                        "strike", "strong", "tt", "var", "div", "center",
                        "blockquote", "ol", "ul", "dl", "table", "caption", "pre",
-                       "ruby", "rt" , "rb" , "rp"
+                       "ruby", "rt" , "rb" , "rp", "p"
                );
                $htmlsingle = array(
-                       "br", "p", "hr", "li", "dt", "dd"
+                       "br", "hr", "li", "dt", "dd"
                );
                $htmlnest = array( # Tags that can be nested--??
                        "table", "tr", "td", "th", "div", "blockquote", "ol", "ul",
@@ -1093,7 +1440,7 @@ class Parser
                $htmlsingle = array_merge( $tabletags, $htmlsingle );
                $htmlelements = array_merge( $htmlsingle, $htmlpairs );
 
-                $htmlattrs = $this->getHTMLattrs () ;
+               $htmlattrs = $this->getHTMLattrs () ;
 
                # Remove HTML comments
                $text = preg_replace( "/<!--.*-->/sU", "", $text );
@@ -1141,7 +1488,7 @@ class Parser
                                        }
                                        # Strip non-approved attributes from the tag
                                        $newparams = $this->fixTagAttributes($params);
-                                               
+
                                }
                                if ( ! $badtag ) {
                                        $rest = str_replace( ">", "&gt;", $rest );
@@ -1160,8 +1507,8 @@ class Parser
                return $text;
        }
 
-/* 
- * 
+/*
+ *
  * This function accomplishes several tasks:
  * 1) Auto-number headings if that option is enabled
  * 2) Add an [edit] link to sections for logged in users who have enabled the option
@@ -1171,45 +1518,60 @@ class Parser
  * It loops through all headlines, collects the necessary data, then splits up the
  * string and re-inserts the newly formatted headlines.
  *
- * */
+ */
+
        /* private */ function formatHeadings( $text )
        {
-               $nh=$this->mOptions->getNumberHeadings();
-               $st=$this->mOptions->getShowToc();
-               if(!$this->mTitle->userCanEdit()) {
-                       $es=0;
-                       $esr=0;
+               $doNumberHeadings = $this->mOptions->getNumberHeadings();
+               $doShowToc = $this->mOptions->getShowToc();
+               if( !$this->mTitle->userCanEdit() ) {
+                       $showEditLink = 0;
+                       $rightClickHack = 0;
                } else {
-                       $es=$this->mOptions->getEditSection();
-                       $esr=$this->mOptions->getEditSectionOnRightClick();
+                       $showEditLink = $this->mOptions->getEditSection();
+                       $rightClickHack = $this->mOptions->getEditSectionOnRightClick();
                }
 
                # Inhibit editsection links if requested in the page
                $esw =& MagicWord::get( MAG_NOEDITSECTION );
-               if ($esw->matchAndRemove( $text )) {
-                       $es=0;
+               if( $esw->matchAndRemove( $text ) ) {
+                       $showEditLink = 0;
                }
-               # if the string __NOTOC__ (not case-sensitive) occurs in the HTML, 
+               # if the string __NOTOC__ (not case-sensitive) occurs in the HTML,
                # do not add TOC
                $mw =& MagicWord::get( MAG_NOTOC );
-               if ($mw->matchAndRemove( $text ))
-               {
-                       $st = 0;
+               if( $mw->matchAndRemove( $text ) ) {
+                       $doShowToc = 0;
                }
 
                # never add the TOC to the Main Page. This is an entry page that should not
                # be more than 1-2 screens large anyway
-               if($this->mTitle->getPrefixedText()==wfMsg("mainpage")) {$st=0;}
+               if( $this->mTitle->getPrefixedText() == wfMsg("mainpage") ) {
+                       $doShowToc = 0;
+               }
+
+               # Get all headlines for numbering them and adding funky stuff like [edit]
+               # links - this is for later, but we need the number of headlines right now
+               $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
+               if( $numMatches < 4 ) {
+                       $doShowToc = 0;
+               }
+
+               # if the string __FORCETOC__ (not case-sensitive) occurs in the HTML,
+               # override above conditions and always show TOC
+               $mw =& MagicWord::get( MAG_FORCETOC );
+               if ($mw->matchAndRemove( $text ) ) {
+                       $doShowToc = 1;
+               }
+
 
                # We need this to perform operations on the HTML
                $sk =& $this->mOptions->getSkin();
 
-               # Get all headlines for numbering them and adding funky stuff like [edit]
-               # links
-               preg_match_all("/<H([1-6])(.*?>)(.*?)<\/H[1-6]>/i",$text,$matches);
-               
                # headline counter
-               $c=0;
+               $headlineCount = 0;
 
                # Ugh .. the TOC should have neat indentation levels which can be
                # passed to the skin functions. These are determined here
@@ -1217,106 +1579,118 @@ class Parser
                $toc = "";
                $full = "";
                $head = array();
-               foreach($matches[3] as $headline) {
-                       if($level) { $prevlevel=$level;}
-                       $level=$matches[1][$c];
-                       if(($nh||$st) && $prevlevel && $level>$prevlevel) { 
-                                                       
-                               $h[$level]=0; // reset when we enter a new level                                
-                               $toc.=$sk->tocIndent($level-$prevlevel);
-                               $toclevel+=$level-$prevlevel;
-                       
-                       } 
-                       if(($nh||$st) && $level<$prevlevel) {
-                               $h[$level+1]=0; // reset when we step back a level
-                               $toc.=$sk->tocUnindent($prevlevel-$level);
-                               $toclevel-=$prevlevel-$level;
-
+               $sublevelCount = array();
+               $level = 0;
+               $prevlevel = 0;
+               foreach( $matches[3] as $headline ) {
+                       $numbering = "";
+                       if( $level ) {
+                               $prevlevel = $level;
+                       }
+                       $level = $matches[1][$headlineCount];
+                       if( ( $doNumberHeadings || $doShowToc ) && $prevlevel && $level > $prevlevel ) {
+                               # reset when we enter a new level
+                               $sublevelCount[$level] = 0;
+                               $toc .= $sk->tocIndent( $level - $prevlevel );
+                               $toclevel += $level - $prevlevel;
                        }
-                       $h[$level]++; // count number of headlines for each level
-                       
-                       if($nh||$st) {
-                               for($i=1;$i<=$level;$i++) {
-                                       if($h[$i]) {
-                                               if($dot) {$numbering.=".";}
-                                               $numbering.=$h[$i];
-                                               $dot=1;                                 
+                       if( ( $doNumberHeadings || $doShowToc ) && $level < $prevlevel ) {
+                               # reset when we step back a level
+                               $sublevelCount[$level+1]=0;
+                               $toc .= $sk->tocUnindent( $prevlevel - $level );
+                               $toclevel -= $prevlevel - $level;
+                       }
+                       # count number of headlines for each level
+                       @$sublevelCount[$level]++;
+                       if( $doNumberHeadings || $doShowToc ) {
+                               $dot = 0;
+                               for( $i = 1; $i <= $level; $i++ ) {
+                                       if( !empty( $sublevelCount[$i] ) ) {
+                                               if( $dot ) {
+                                                       $numbering .= ".";
+                                               }
+                                               $numbering .= $sublevelCount[$i];
+                                               $dot = 1;
                                        }
                                }
                        }
 
-                       // The canonized header is a version of the header text safe to use for links
-                       // Avoid insertion of weird stuff like <math> by expanding the relevant sections
-                       $canonized_headline=Parser::unstrip( $headline, $this->mStripState );
-                       $canonized_headline=preg_replace("/<.*?>/","",$canonized_headline); // strip out HTML
+                       # 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 );
+
+                       # strip out HTML
+                       $canonized_headline = preg_replace( "/<.*?" . ">/","",$canonized_headline );
                        $tocline = trim( $canonized_headline );
-                       $canonized_headline=str_replace('"',"",$canonized_headline);
-                       $canonized_headline=str_replace(" ","_",trim($canonized_headline));                     
-                       $refer[$c]=$canonized_headline;
-                       $refers[$canonized_headline]++;  // count how many in assoc. array so we can track dupes in anchors
-                       $refcount[$c]=$refers[$canonized_headline];
-
-            // Prepend the number to the heading text
-                       
-                       if($nh||$st) {
-                               $tocline=$numbering ." ". $tocline;
-                               
-                               // Don't number the heading if it is the only one (looks silly)
-                               if($nh && count($matches[3]) > 1) {
-                                       $headline=$numbering . " " . $headline; // the two are different if the line contains a link
+                       $canonized_headline = preg_replace("/[ \\?&\\/<>\\(\\)\\[\\]=,+']+/", '_', html_entity_decode( $tocline));
+                       $refer[$headlineCount] = $canonized_headline;
+
+                       # count how many in assoc. array so we can track dupes in anchors
+                       @$refers[$canonized_headline]++;
+                       $refcount[$headlineCount]=$refers[$canonized_headline];
+
+                       # Prepend the number to the heading text
+
+                       if( $doNumberHeadings || $doShowToc ) {
+                               $tocline = $numbering . " " . $tocline;
+
+                               # Don't number the heading if it is the only one (looks silly)
+                               if( $doNumberHeadings && count( $matches[3] ) > 1) {
+                                       # the two are different if the line contains a link
+                                       $headline=$numbering . " " . $headline;
                                }
                        }
-                       
-                       // Create the anchor for linking from the TOC to the section
-                       $anchor=$canonized_headline;
-                       if($refcount[$c]>1) {$anchor.="_".$refcount[$c];}
-                       if($st) {
-                               $toc.=$sk->tocLine($anchor,$tocline,$toclevel);
+
+                       # Create the anchor for linking from the TOC to the section
+                       $anchor = $canonized_headline;
+                       if($refcount[$headlineCount] > 1 ) {
+                               $anchor .= "_" . $refcount[$headlineCount];
                        }
-                       if($es) {
-                               $head[$c].=$sk->editSectionLink($c+1);
+                       if( $doShowToc ) {
+                               $toc .= $sk->tocLine($anchor,$tocline,$toclevel);
                        }
-                       
-                       // Put it all together
-                       
-                       $head[$c].="<h".$level.$matches[2][$c]
-                        ."<a name=\"".$anchor."\">"
-                        .$headline
-                        ."</a>"
-                        ."</h".$level.">";
-                       
-                       // Add the edit section link
-                       
-                       if($esr) {
-                               $head[$c]=$sk->editSectionScript($c+1,$head[$c]);       
+                       if( $showEditLink ) {
+                               if ( empty( $head[$headlineCount] ) ) {
+                                       $head[$headlineCount] = "";
+                               }
+                               $head[$headlineCount] .= $sk->editSectionLink($headlineCount+1);
+                       }
+
+                       # Add the edit section span
+                       if( $rightClickHack ) {
+                               $headline = $sk->editSectionScript($headlineCount+1,$headline);
                        }
-                       
-                       $numbering="";
-                       $c++;
-                       $dot=0;
-               }               
-
-               if($st) {
-                       $toclines=$c;
-                       $toc.=$sk->tocUnindent($toclevel);
-                       $toc=$sk->tocTable($toc);
-               }
-
-               // split up and insert constructed headlines
-               
-               $blocks=preg_split("/<H[1-6].*?>.*?<\/H[1-6]>/i",$text);
-               $i=0;
-
-               foreach($blocks as $block) {
-                       if(($es) && $c>0 && $i==0) {
-                           # This is the [edit] link that appears for the top block of text when 
+
+                       # give headline the correct <h#> tag
+                       @$head[$headlineCount] .= "<a name=\"$anchor\"></a><h".$level.$matches[2][$headlineCount] .$headline."</h".$level.">";
+
+                       $headlineCount++;
+               }
+
+               if( $doShowToc ) {
+                       $toclines = $headlineCount;
+                       $toc .= $sk->tocUnindent( $toclevel );
+                       $toc = $sk->tocTable( $toc );
+               }
+
+               # split up and insert constructed headlines
+
+               $blocks = preg_split( "/<H[1-6].*?" . ">.*?<\/H[1-6]>/i", $text );
+               $i = 0;
+
+               foreach( $blocks as $block ) {
+                       if( $showEditLink && $headlineCount > 0 && $i == 0 && $block != "\n" ) {
+                           # This is the [edit] link that appears for the top block of text when
                                # section editing is enabled
-                               $full.=$sk->editSectionLink(0);
+
+                               # Disabled because it broke block formatting
+                               # For example, a bullet point in the top line
+                               # $full .= $sk->editSectionLink(0);
                        }
-                       $full.=$block;
-                       if($st && $toclines>3 && !$i) {
-                               # Let's add a top anchor just in case we want to link to the top of the page
-                               $full="<a name=\"top\"></a>".$full.$toc;
+                       $full .= $block;
+                       if( $doShowToc && !$i) {
+                       # Top anchor now in skin
+                               $full = $full.$toc;
                        }
 
                        if( !empty( $head[$i] ) ) {
@@ -1324,7 +1698,7 @@ class Parser
                        }
                        $i++;
                }
-               
+
                return $full;
        }
 
@@ -1358,7 +1732,7 @@ class Parser
                        }
                        $num = str_replace( "-", "", $isbn );
                        $num = str_replace( " ", "", $num );
-               
+
                        if ( "" == $num ) {
                                $text = "ISBN $blank$x";
                        } else {
@@ -1401,7 +1775,7 @@ class Parser
                                $rfc .= $x{0};
                                $x = substr( $x, 1 );
                        }
-               
+
                        if ( "" == $rfc ) {
                                $text .= "RFC $blank$x";
                        } else {
@@ -1420,12 +1794,24 @@ class Parser
        function preSaveTransform( $text, &$title, &$user, $options, $clearState = true )
        {
                $this->mOptions = $options;
-               $this->mTitle = $title;
+               $this->mTitle =& $title;
+               $this->mOutputType = OT_WIKI;
+
                if ( $clearState ) {
                        $this->clearState();
                }
-               
+
                $stripState = false;
+               $pairs = array(
+                       "\r\n" => "\n",
+                       );
+               $text = str_replace(array_keys($pairs), array_values($pairs), $text);
+               // now with regexes
+               $pairs = array(
+                       "/<br.+(clear|break)=[\"']?(all|both)[\"']?\\/?>/i" => '<br style="clear:both;"/>',
+                       "/<br *?>/i" => "<br/>",
+               );
+               $text = preg_replace(array_keys($pairs), array_values($pairs), $text);
                $text = $this->strip( $text, $stripState, false );
                $text = $this->pstPass2( $text, $user );
                $text = $this->unstrip( $text, $stripState );
@@ -1434,7 +1820,11 @@ class Parser
 
        /* private */ function pstPass2( $text, &$user )
        {
-               global $wgLang, $wgLocaltimezone;
+               global $wgLang, $wgLocaltimezone, $wgCurParser;
+
+               # Variable replacement
+               # Because mOutputType is OT_WIKI, this will only process {{subst:xxx}} type tags
+               $text = $this->replaceVariables( $text );
 
                # Signatures
                #
@@ -1449,6 +1839,7 @@ class Parser
                  " (" . date( "T" ) . ")";
                if(isset($wgLocaltimezone)) putenv("TZ=$oldtz");
 
+               $text = preg_replace( "/~~~~~/", $d, $text );
                $text = preg_replace( "/~~~~/", "[[" . $wgLang->getNsText(
                  Namespace::getUser() ) . ":$n|$k]] $d", $text );
                $text = preg_replace( "/~~~/", "[[" . $wgLang->getNsText(
@@ -1480,14 +1871,16 @@ class Parser
                } else {
                        $text = preg_replace( $p2, "[[\\1 ({$context})|\\1]]", $text );
                }
-               
-               # {{SUBST:xxx}} variables
-               #
+
+               /*
                $mw =& MagicWord::get( MAG_SUBST );
-               $text = $mw->substituteCallback( $text, "wfReplaceSubstVar" );
+               $wgCurParser = $this->fork();
+               $text = $mw->substituteCallback( $text, "wfBraceSubstitution" );
+               $this->merge( $wgCurParser );
+               */
 
                # Trim trailing whitespace
-               # MAG_END (__END__) tag allows for trailing 
+               # MAG_END (__END__) tag allows for trailing
                # whitespace to be deliberately included
                $text = rtrim( $text );
                $mw =& MagicWord::get( MAG_END );
@@ -1496,7 +1889,37 @@ class Parser
                return $text;
        }
 
+       # Set up some variables which are usually set up in parse()
+       # so that an external function can call some class members with confidence
+       function startExternalParse( &$title, $options, $outputType, $clearState = true )
+       {
+               $this->mTitle =& $title;
+               $this->mOptions = $options;
+               $this->mOutputType = $outputType;
+               if ( $clearState ) {
+                       $this->clearState();
+               }
+       }
+
+       function transformMsg( $text, $options ) {
+               global $wgTitle;
+               static $executing = false;
 
+               # Guard against infinite recursion
+               if ( $executing ) {
+                       return $text;
+               }
+               $executing = true;
+
+               $this->mTitle = $wgTitle;
+               $this->mOptions = $options;
+               $this->mOutputType = OT_MSG;
+               $this->clearState();
+               $text = $this->replaceVariables( $text );
+
+               $executing = false;
+               return $text;
+       }
 }
 
 class ParserOutput
@@ -1520,6 +1943,13 @@ class ParserOutput
        function setLanguageLinks( $ll ) { return wfSetVar( $this->mLanguageLinks, $ll ); }
        function setCategoryLinks( $cl ) { return wfSetVar( $this->mCategoryLinks, $cl ); }
        function setContainsOldMagic( $com ) { return wfSetVar( $this->mContainsOldMagic, $com ); }
+
+       function merge( $other ) {
+               $this->mLanguageLinks = array_merge( $this->mLanguageLinks, $other->mLanguageLinks );
+               $this->mCategoryLinks = array_merge( $this->mCategoryLinks, $this->mLanguageLinks );
+               $this->mContainsOldMagic = $this->mContainsOldMagic || $other->mContainsOldMagic;
+       }
+
 }
 
 class ParserOptions
@@ -1534,7 +1964,6 @@ class ParserOptions
        var $mDateFormat;                # Date format index
        var $mEditSection;               # Create "edit section" links
        var $mEditSectionOnRightClick;   # Generate JavaScript to edit section on right click
-       var $mPrintable;                 # Generate printable output
        var $mNumberHeadings;            # Automatically number headings
        var $mShowToc;                   # Show table of contents
 
@@ -1547,7 +1976,6 @@ class ParserOptions
        function getDateFormat() { return $this->mDateFormat; }
        function getEditSection() { return $this->mEditSection; }
        function getEditSectionOnRightClick() { return $this->mEditSectionOnRightClick; }
-       function getPrintable() { return $this->mPrintable; }
        function getNumberHeadings() { return $this->mNumberHeadings; }
        function getShowToc() { return $this->mShowToc; }
 
@@ -1560,23 +1988,23 @@ class ParserOptions
        function setDateFormat( $x ) { return wfSetVar( $this->mDateFormat, $x ); }
        function setEditSection( $x ) { return wfSetVar( $this->mEditSection, $x ); }
        function setEditSectionOnRightClick( $x ) { return wfSetVar( $this->mEditSectionOnRightClick, $x ); }
-       function setPrintable( $x ) { return wfSetVar( $this->mPrintable, $x ); }
        function setNumberHeadings( $x ) { return wfSetVar( $this->mNumberHeadings, $x ); }
        function setShowToc( $x ) { return wfSetVar( $this->mShowToc, $x ); }
 
-       /* static */ function newFromUser( &$user ) 
+       /* static */ function newFromUser( &$user )
        {
                $popts = new ParserOptions;
-               $popts->initialiseFromUser( &$user );
+               $popts->initialiseFromUser( $user );
                return $popts;
        }
 
-       function initialiseFromUser( &$userInput ) 
+       function initialiseFromUser( &$userInput )
        {
                global $wgUseTeX, $wgUseCategoryMagic, $wgUseDynamicDates, $wgInterwikiMagic, $wgAllowExternalImages;
-               
+
                if ( !$userInput ) {
                        $user = new User;
+                       $user->setLoaded( true );
                } else {
                        $user =& $userInput;
                }
@@ -1590,38 +2018,18 @@ class ParserOptions
                $this->mDateFormat = $user->getOption( "date" );
                $this->mEditSection = $user->getOption( "editsection" );
                $this->mEditSectionOnRightClick = $user->getOption( "editsectiononrightclick" );
-               $this->mPrintable = false;
                $this->mNumberHeadings = $user->getOption( "numberheadings" );
                $this->mShowToc = $user->getOption( "showtoc" );
        }
 
 
 }
-       
-# Regex callbacks, used in OutputPage::replaceVariables
-
-# Just get rid of the dangerous stuff
-# Necessary because replaceVariables is called after removeHTMLtags, 
-# and message text can come from any user
-function wfReplaceMsgVar( $matches ) {
-       global $wgCurOut, $wgLinkCache;
-       $text = $wgCurOut->removeHTMLtags( wfMsg( $matches[1] ) );
-       $wgLinkCache->suspend();
-       $text = $wgCurOut->replaceInternalLinks( $text );
-       $wgLinkCache->resume();
-       $wgLinkCache->addLinkObj( Title::makeTitle( NS_MEDIAWIKI, $matches[1] ) );
-       return $text;
-}
 
-# Effective <nowiki></nowiki>
-# Not real <nowiki> because this is called after nowiki sections are processed
-function wfReplaceMsgnwVar( $matches ) {
-       global $wgCurOut, $wgLinkCache;
-       $text = wfEscapeWikiText( wfMsg( $matches[1] ) );
-       $wgLinkCache->addLinkObj( Title::makeTitle( NS_MEDIAWIKI, $matches[1] ) );
-       return $text;
+# Regex callbacks, used in Parser::replaceVariables
+function wfBraceSubstitution( $matches )
+{
+       global $wgCurParser;
+       return $wgCurParser->braceSubstitution( $matches );
 }
 
-
-
 ?>