Fix for bug 13004, in which the Postgres full-text search has too many results,
[lhc/web/wiklou.git] / includes / EditPage.php
index 48cb471..0cdc21c 100644 (file)
@@ -1,17 +1,46 @@
 <?php
 /**
- * Contain the EditPage class
+ * Contains the EditPage class
  */
 
 /**
- * Splitting edit page/HTML interface from Article...
+ * The edit page/HTML interface (split from Article)
  * The actual database and text munging is still in Article,
  * but it should get easier to call those from alternate
  * interfaces.
  *
+ * EditPage cares about two distinct titles:
+ * $wgTitle is the page that forms submit to, links point to,
+ * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
+ * page in the database that is actually being edited. These are
+ * usually the same, but they are now allowed to be different.
  */
-
 class EditPage {
+       const AS_SUCCESS_UPDATE                 = 200;
+       const AS_SUCCESS_NEW_ARTICLE            = 201;
+       const AS_HOOK_ERROR                     = 210;
+       const AS_FILTERING                      = 211;
+       const AS_HOOK_ERROR_EXPECTED            = 212;
+       const AS_BLOCKED_PAGE_FOR_USER          = 215;
+       const AS_CONTENT_TOO_BIG                = 216;
+       const AS_USER_CANNOT_EDIT               = 217;
+       const AS_READ_ONLY_PAGE_ANON            = 218;
+       const AS_READ_ONLY_PAGE_LOGGED          = 219;
+       const AS_READ_ONLY_PAGE                 = 220;
+       const AS_RATE_LIMITED                   = 221;
+       const AS_ARTICLE_WAS_DELETED            = 222;
+       const AS_NO_CREATE_PERMISSION           = 223;
+       const AS_BLANK_ARTICLE                  = 224;
+       const AS_CONFLICT_DETECTED              = 225;
+       const AS_SUMMARY_NEEDED                 = 226;
+       const AS_TEXTBOX_EMPTY                  = 228;
+       const AS_MAX_ARTICLE_SIZE_EXCEEDED      = 229;
+       const AS_OK                             = 230;
+       const AS_END                            = 231;
+       const AS_SPAM_ERROR                     = 232;
+       const AS_IMAGE_REDIRECT_ANON            = 233;
+       const AS_IMAGE_REDIRECT_LOGGED          = 234;
+
        var $mArticle;
        var $mTitle;
        var $mMetaData = '';
@@ -22,6 +51,7 @@ class EditPage {
        var $firsttime;
        var $lastDelete;
        var $mTokenOk = false;
+       var $mTokenOkExceptSuffix = false;
        var $mTriedSave = false;
        var $tooBig = false;
        var $kblength = false;
@@ -43,9 +73,15 @@ class EditPage {
        # extensions should take care to _append_ to the present value
        public $editFormPageTop; // Before even the preview
        public $editFormTextTop;
+       public $editFormTextBeforeContent;
        public $editFormTextAfterWarn;
        public $editFormTextAfterTools;
        public $editFormTextBottom;
+       
+       /* $didSave should be set to true whenever an article was succesfully altered. */
+       public $didSave = false;
+       
+       public $suppressIntro = false;
 
        /**
         * @todo document
@@ -53,12 +89,12 @@ class EditPage {
         */
        function EditPage( $article ) {
                $this->mArticle =& $article;
-               global $wgTitle;
-               $this->mTitle =& $wgTitle;
+               $this->mTitle = $article->getTitle();
 
                # Placeholders for text injection by hooks (empty per default)
                $this->editFormPageTop =
                $this->editFormTextTop =
+               $this->editFormTextBeforeContent =
                $this->editFormTextAfterWarn =
                $this->editFormTextAfterTools =
                $this->editFormTextBottom = "";
@@ -66,15 +102,16 @@ class EditPage {
        
        /**
         * Fetch initial editing page content.
+        * @private
         */
-       private function getContent( $def_text = '' ) {
+       function getContent( $def_text = '' ) {
                global $wgOut, $wgRequest, $wgParser;
 
                # Get variables from query string :P
                $section = $wgRequest->getVal( 'section' );
                $preload = $wgRequest->getVal( 'preload' );
                $undoafter = $wgRequest->getVal( 'undoafter' );
-               $undoto = $wgRequest->getVal( 'undoto' );
+               $undo = $wgRequest->getVal( 'undo' );
 
                wfProfileIn( __METHOD__ );
 
@@ -99,18 +136,28 @@ class EditPage {
 
                        $text = $this->mArticle->getContent();
 
-                       if ( $undoafter > 0 && $undoto > $undoafter ) {
-                               #Undoing a specific edit overrides section editing; section-editing
+                       if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
+                               # If they got undoafter and undo round the wrong way, switch them
+                               list( $undo, $undoafter ) = array( $undoafter, $undo );
+                       }
+
+                       if ( $undo > 0 && $undo > $undoafter ) {
+                               # Undoing a specific edit overrides section editing; section-editing
                                # doesn't work with undoing.
-                               $undorev = Revision::newFromId($undoto);
-                               $oldrev = Revision::newFromId($undoafter);
+                               if ( $undoafter ) {
+                                       $undorev = Revision::newFromId($undo);
+                                       $oldrev = Revision::newFromId($undoafter);
+                               } else {
+                                       $undorev = Revision::newFromId($undo);
+                                       $oldrev = $undorev ? $undorev->getPrevious() : null;
+                               }
 
                                #Sanity check, make sure it's the right page.
                                # Otherwise, $text will be left as-is.
                                if ( !is_null($undorev) && !is_null($oldrev) && $undorev->getPage()==$oldrev->getPage() && $undorev->getPage()==$this->mArticle->getID() ) {
                                        $undorev_text = $undorev->getText();
-                    $oldrev_text = $oldrev->getText();
-                    $currev_text = $text;
+                                       $oldrev_text = $oldrev->getText();
+                                       $currev_text = $text;
 
                                        #No use doing a merge if it's just a straight revert.
                                        if ( $currev_text != $undorev_text ) {
@@ -131,8 +178,8 @@ class EditPage {
                                        $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
                                        $firstrev = $oldrev->getNext();
                                        # If we just undid one rev, use an autosummary
-                                       if ( $firstrev->mId == $undoto ) {
-                                                       $this->summary = wfMsgForContent('undo-summary', $undoto, $undorev->getUserText());
+                                       if ( $firstrev->mId == $undo ) {
+                                               $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
                                        }
                                        $this->formtype = 'diff';
                                } else {
@@ -288,15 +335,13 @@ class EditPage {
         * the newly-edited page.
         */
        function edit() {
-               global $wgOut, $wgUser, $wgRequest, $wgTitle;
-               global $wgEmailConfirmToEdit;
+               global $wgOut, $wgUser, $wgRequest;
 
-               if ( ! wfRunHooks( 'AlternateEdit', array( &$this  ) ) )
+               if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) )
                        return;
 
-               $fname = 'EditPage::edit';
-               wfProfileIn( $fname );
-               wfDebug( "$fname: enter\n" );
+               wfProfileIn( __METHOD__ );
+               wfDebug( __METHOD__.": enter\n" );
 
                // this is not an article
                $wgOut->setArticleFlag(false);
@@ -306,61 +351,55 @@ class EditPage {
 
                if( $this->live ) {
                        $this->livePreview();
-                       wfProfileOut( $fname );
-                       return;
-               }
-
-               if ( ! $this->mTitle->userCan( 'edit' ) ) {
-                       wfDebug( "$fname: user can't edit\n" );
-                       $wgOut->readOnlyPage( $this->getContent(), true );
-                       wfProfileOut( $fname );
+                       wfProfileOut( __METHOD__ );
                        return;
                }
-               wfDebug( "$fname: Checking blocks\n" );
-               if ( !$this->preview && !$this->diff && $wgUser->isBlockedFrom( $this->mTitle, !$this->save ) ) {
-                       # When previewing, don't check blocked state - will get caught at save time.
-                       # Also, check when starting edition is done against slave to improve performance.
-                       wfDebug( "$fname: user is blocked\n" );
-                       $this->blockedPage();
-                       wfProfileOut( $fname );
+               
+               if( wfReadOnly() ) {
+                       $wgOut->readOnlyPage( $this->getContent() );
+                       wfProfileOut( __METHOD__ );
                        return;
                }
-               if ( !$wgUser->isAllowed('edit') ) {
-                       if ( $wgUser->isAnon() ) {
-                               wfDebug( "$fname: user must log in\n" );
-                               $this->userNotLoggedInPage();
-                               wfProfileOut( $fname );
-                               return;
-                       } else {
-                               wfDebug( "$fname: read-only page\n" );
-                               $wgOut->readOnlyPage( $this->getContent(), true );
-                               wfProfileOut( $fname );
-                               return;
+
+               $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
+               if( !$this->mTitle->exists() ) {
+                       # We can't use array_diff here, because that considers ANY TWO
+                       # ARRAYS TO BE EQUAL.  Thanks, PHP.
+                       $createErrors = $this->mTitle->getUserPermissionsErrors('create', $wgUser);
+                       foreach( $createErrors as $error ) {
+                               # in_array() actually *does* work as expected.
+                               if( !in_array( $error, $permErrors ) ) {
+                                       $permErrors[] = $error;
+                               }
                        }
                }
-               if ($wgEmailConfirmToEdit && !$wgUser->isEmailConfirmed()) {
-                       wfDebug("$fname: user must confirm e-mail address\n");
-                       $this->userNotConfirmedPage();
-                       wfProfileOut($fname);
-                       return;
+
+               # Ignore some permissions errors.
+               $remove = array();
+               foreach( $permErrors as $error ) {
+                       if ($this->preview || $this->diff &&
+                               ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
+                       {
+                               // Don't worry about blocks when previewing/diffing
+                               $remove[] = $error;
+                       }
+
+                       if ($error[0] == 'readonlytext')
+                       {
+                               if ($this->edit) {
+                                       $this->formtype = 'preview';
+                               } elseif ($this->save || $this->preview || $this->diff) {
+                                       $remove[] = $error;
+                               }
+                       }
                }
-               if ( !$this->mTitle->userCan( 'create' ) && !$this->mTitle->exists() ) {
-                       wfDebug( "$fname: no create permission\n" );
-                       $this->noCreatePermission();
-                       wfProfileOut( $fname );
+               $permErrors = array_diff( $permErrors, $remove );
+
+               if ( !empty($permErrors) ) {
+                       wfDebug( __METHOD__.": User can't edit\n" );
+                       $wgOut->readOnlyPage( $this->getContent(), true, $permErrors );
+                       wfProfileOut( __METHOD__ );
                        return;
-               }
-               if ( wfReadOnly() ) {
-                       wfDebug( "$fname: read-only mode is engaged\n" );
-                       if( $this->save || $this->preview ) {
-                               $this->formtype = 'preview';
-                       } else if ( $this->diff ) {
-                               $this->formtype = 'diff';
-                       } else {
-                               $wgOut->readOnlyPage( $this->getContent() );
-                               wfProfileOut( $fname );
-                               return;
-                       }
                } else {
                        if ( $this->save ) {
                                $this->formtype = 'save';
@@ -379,12 +418,12 @@ class EditPage {
                        }
                }
 
-               wfProfileIn( "$fname-business-end" );
+               wfProfileIn( __METHOD__."-business-end" );
 
                $this->isConflict = false;
                // css / js subpages of user pages get a special treatment
-               $this->isCssJsSubpage      = $wgTitle->isCssJsSubpage();
-               $this->isValidCssJsSubpage = $wgTitle->isValidCssJsSubpage();
+               $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
+               $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 
                /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
                 * no matter it's current state
@@ -407,9 +446,10 @@ class EditPage {
                        }
                }
 
-               if(!$this->mTitle->getArticleID() && ('initial' == $this->formtype || $this->firsttime )) { # new article
+               # Show applicable editing introductions
+               if( $this->formtype == 'initial' || $this->firsttime )
                        $this->showIntro();
-               }
+       
                if( $this->mTitle->isTalkPage() ) {
                        $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
                }
@@ -421,8 +461,8 @@ class EditPage {
 
                if ( 'save' == $this->formtype ) {
                        if ( !$this->attemptSave() ) {
-                               wfProfileOut( "$fname-business-end" );
-                               wfProfileOut( $fname );
+                               wfProfileOut( __METHOD__."-business-end" );
+                               wfProfileOut( __METHOD__ );
                                return;
                        }
                }
@@ -432,8 +472,8 @@ class EditPage {
                if ( 'initial' == $this->formtype || $this->firsttime ) {
                        if ($this->initialiseForm() === false) {
                                $this->noSuchSectionPage();
-                               wfProfileOut( "$fname-business-end" );
-                               wfProfileOut( $fname );
+                               wfProfileOut( __METHOD__."-business-end" );
+                               wfProfileOut( __METHOD__ );
                                return;
                        }
                        if( !$this->mTitle->getArticleId() ) 
@@ -441,22 +481,35 @@ class EditPage {
                }
 
                $this->showEditForm();
-               wfProfileOut( "$fname-business-end" );
-               wfProfileOut( $fname );
+               wfProfileOut( __METHOD__."-business-end" );
+               wfProfileOut( __METHOD__ );
        }
 
        /**
-        * Return true if this page should be previewed when the edit form
-        * is initially opened.
+        * Should we show a preview when the edit form is first shown?
+        *
         * @return bool
-        * @private
         */
-       function previewOnOpen() {
-               global $wgUser;
-               return $this->section != 'new' &&
-                       ( ( $wgUser->getOption( 'previewonfirst' ) && $this->mTitle->exists() ) ||
-                               ( $this->mTitle->getNamespace() == NS_CATEGORY &&
-                                       !$this->mTitle->exists() ) );
+       private function previewOnOpen() {
+               global $wgRequest, $wgUser;
+               if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
+                       // Explicit override from request
+                       return true;
+               } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
+                       // Explicit override from request
+                       return false;
+               } elseif( $this->section == 'new' ) {
+                       // Nothing *to* preview for new sections
+                       return false;
+               } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
+                       // Standard preference behaviour
+                       return true;
+               } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
+                       // Categories are special
+                       return true;
+               } else {
+                       return false;
+               }
        }
 
        /**
@@ -544,9 +597,10 @@ class EditPage {
                        $this->summary   = '';
                        $this->edittime  = '';
                        $this->starttime = wfTimestampNow();
+                       $this->edit      = false;
                        $this->preview   = false;
                        $this->save      = false;
-                       $this->diff      = false;
+                       $this->diff      = false;
                        $this->minoredit = false;
                        $this->watchthis = false;
                        $this->recreate  = false;
@@ -572,44 +626,69 @@ class EditPage {
         */
        function tokenOk( &$request ) {
                global $wgUser;
-               if( $wgUser->isAnon() ) {
-                       # Anonymous users may not have a session
-                       # open. Check for suffix anyway.
-                       $this->mTokenOk = ( EDIT_TOKEN_SUFFIX == $request->getVal( 'wpEditToken' ) );
-               } else {
-                       $this->mTokenOk = $wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
-               }
+               $token = $request->getVal( 'wpEditToken' );
+               $this->mTokenOk = $wgUser->matchEditToken( $token );
+               $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
                return $this->mTokenOk;
        }
 
-       /** */
-       function showIntro() {
+       /**
+        * Show all applicable editing introductions
+        */
+       private function showIntro() {
                global $wgOut, $wgUser;
-               $addstandardintro=true;
-               if($this->editintro) {
-                       $introtitle=Title::newFromText($this->editintro);
-                       if(isset($introtitle) && $introtitle->userCanRead()) {
-                               $rev=Revision::newFromTitle($introtitle);
-                               if($rev) {
-                                       $wgOut->addSecondaryWikiText($rev->getText());
-                                       $addstandardintro=false;
-                               }
+               if( $this->suppressIntro )
+                       return;
+
+               # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
+               if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
+                       $parts = explode( '/', $this->mTitle->getText(), 2 );
+                       $username = $parts[0];
+                       $id = User::idFromName( $username );
+                       $ip = User::isIP( $username );
+
+                       if ( $id == 0 && !$ip ) {
+                               $wgOut->addWikiText( '<div class="mw-userpage-userdoesnotexist error">' . wfMsg( 'userpage-userdoesnotexist', $username ) . '</div>' );
                        }
                }
-               if($addstandardintro) {
-                       if ( $wgUser->isLoggedIn() )
-                               $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
-                       else
-                               $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
+
+               if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
+                       if( $wgUser->isLoggedIn() ) {
+                               $wgOut->addWikiText( '<div class="mw-newarticletext">' . wfMsg( 'newarticletext' ) . '</div>' );
+                       } else {
+                               $wgOut->addWikiText( '<div class="mw-newarticletextanon">' . wfMsg( 'newarticletextanon' ) . '</div>' );
+                       }
+                       $this->showDeletionLog( $wgOut );
                }
        }
 
        /**
-        * Attempt submission
-        * @return bool false if output is done, true if the rest of the form should be displayed
+        * Attempt to show a custom editing introduction, if supplied
+        *
+        * @return bool
         */
-       function attemptSave() {
-               global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut;
+       private function showCustomIntro() {
+               if( $this->editintro ) {
+                       $title = Title::newFromText( $this->editintro );
+                       if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
+                               global $wgOut;
+                               $revision = Revision::newFromTitle( $title );
+                               $wgOut->addSecondaryWikiText( $revision->getText() );
+                               return true;
+                       } else {
+                               return false;
+                       }
+               } else {
+                       return false;
+               }
+       }
+
+       /**
+        * Attempt submission (no UI)
+        * @return one of the constants describing the result
+        */
+       function internalAttemptSave( &$result, $bot = false ) {
+               global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
                global $wgMaxArticleSize;
 
                $fname = 'EditPage::attemptSave';
@@ -619,7 +698,18 @@ class EditPage {
                if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
                {
                        wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
-                       return false;
+                       return self::AS_HOOK_ERROR;
+               }
+
+               # Check image redirect
+               if ( $this->mTitle->getNamespace() == NS_IMAGE &&
+                       Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
+                       !$wgUser->isAllowed( 'upload' ) ) {
+                               if( $wgUser->isAnon() ) {
+                                       return self::AS_IMAGE_REDIRECT_ANON;
+                               } else {
+                                       return self::AS_IMAGE_REDIRECT_LOGGED;
+                               }
                }
 
                # Reintegrate metadata
@@ -629,34 +719,33 @@ class EditPage {
                # Check for spam
                $matches = array();
                if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
-                       $this->spamPage ( $matches[0] );
+                       $result['spam'] = $matches[0];
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_SPAM_ERROR;
                }
                if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
                        # Error messages or other handling should be performed by the filter function
-                       wfProfileOut( $fname );
                        wfProfileOut( "$fname-checks" );
-                       return false;
+                       wfProfileOut( $fname );
+                       return self::AS_FILTERING;
                }
                if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
                        # Error messages etc. could be handled within the hook...
-                       wfProfileOut( $fname );
                        wfProfileOut( "$fname-checks" );
-                       return false;
+                       wfProfileOut( $fname );
+                       return self::AS_HOOK_ERROR;
                } elseif( $this->hookError != '' ) {
                        # ...or the hook could be expecting us to produce an error
-                       wfProfileOut( "$fname-checks " );
+                       wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_HOOK_ERROR_EXPECTED;
                }
                if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
                        # Check block state against master, thus 'false'.
-                       $this->blockedPage();
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_BLOCKED_PAGE_FOR_USER;
                }
                $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
                if ( $this->kblength > $wgMaxArticleSize ) {
@@ -664,35 +753,31 @@ class EditPage {
                        $this->tooBig = true;
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_CONTENT_TOO_BIG;
                }
 
                if ( !$wgUser->isAllowed('edit') ) {
                        if ( $wgUser->isAnon() ) {
-                               $this->userNotLoggedInPage();
                                wfProfileOut( "$fname-checks" );
                                wfProfileOut( $fname );
-                               return false;
+                               return self::AS_READ_ONLY_PAGE_ANON;
                        }
                        else {
-                               $wgOut->readOnlyPage();
                                wfProfileOut( "$fname-checks" );
                                wfProfileOut( $fname );
-                               return false;
+                               return self::AS_READ_ONLY_PAGE_LOGGED;
                        }
                }
 
                if ( wfReadOnly() ) {
-                       $wgOut->readOnlyPage();
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_READ_ONLY_PAGE;
                }
                if ( $wgUser->pingLimiter() ) {
-                       $wgOut->rateLimited();
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_RATE_LIMITED;
                }
 
                # If the article has been deleted while editing, don't save it without
@@ -700,7 +785,7 @@ class EditPage {
                if ( $this->deletedSinceEdit && !$this->recreate ) {
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_ARTICLE_WAS_DELETED;
                }
 
                wfProfileOut( "$fname-checks" );
@@ -712,24 +797,30 @@ class EditPage {
                        // Late check for create permission, just in case *PARANOIA*
                        if ( !$this->mTitle->userCan( 'create' ) ) {
                                wfDebug( "$fname: no create permission\n" );
-                               $this->noCreatePermission();
                                wfProfileOut( $fname );
-                               return;
+                               return self::AS_NO_CREATE_PERMISSION;
                        }
 
                        # Don't save a new article if it's blank.
-                       if ( ( '' == $this->textbox1 ) ) {
-                                       $wgOut->redirect( $this->mTitle->getFullURL() );
+                       if ( '' == $this->textbox1 ) {
                                        wfProfileOut( $fname );
-                                       return false;
+                                       return self::AS_BLANK_ARTICLE;
+                       }
+
+                       // Run post-section-merge edit filter
+                       if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError ) ) ) {
+                               # Error messages etc. could be handled within the hook...
+                               wfProfileOut( $fname );
+                               return self::AS_HOOK_ERROR;
                        }
 
-                       $isComment=($this->section=='new');
+                       $isComment = ( $this->section == 'new' );
+                       
                        $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
-                               $this->minoredit, $this->watchthis, false, $isComment);
+                               $this->minoredit, $this->watchthis, false, $isComment, $bot);
 
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_SUCCESS_NEW_ARTICLE;
                }
 
                # Article exists. Check for edit conflict.
@@ -759,7 +850,7 @@ class EditPage {
 
                if ( $this->isConflict) {
                        wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
-                               $this->mArticle->getTimestamp() . "'\n" );
+                               $this->mArticle->getTimestamp() . "')\n" );
                        $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
                }
                else {
@@ -774,7 +865,7 @@ class EditPage {
 
                # Suppress edit conflict with self, except for section edits where merging is required.
                if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
-                       wfDebug( "Suppressing edit conflict, same user.\n" );
+                       wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
                        $this->isConflict = false;
                } else {
                        # switch from section editing to normal editing in edit conflict
@@ -783,38 +874,45 @@ class EditPage {
                                if( $this->mergeChangesInto( $text ) ){
                                        // Successful merge! Maybe we should tell the user the good news?
                                        $this->isConflict = false;
-                                       wfDebug( "Suppressing edit conflict, successful merge.\n" );
+                                       wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
                                } else {
                                        $this->section = '';
                                        $this->textbox1 = $text;
-                                       wfDebug( "Keeping edit conflict, failed merge.\n" );
+                                       wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
                                }
                        }
                }
 
                if ( $this->isConflict ) {
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_CONFLICT_DETECTED;
                }
 
                $oldtext = $this->mArticle->getContent();
 
+               // Run post-section-merge edit filter
+               if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError ) ) ) {
+                       # Error messages etc. could be handled within the hook...
+                       wfProfileOut( $fname );
+                       return self::AS_HOOK_ERROR;
+               }
+
                # Handle the user preference to force summaries here, but not for null edits
                if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
                        &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
                        if( md5( $this->summary ) == $this->autoSumm ) {
                                $this->missingSummary = true;
                                wfProfileOut( $fname );
-                               return( true );
+                               return self::AS_SUMMARY_NEEDED;
                        }
                }
 
                #And a similar thing for new sections
-                if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
+               if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
                        if (trim($this->summary) == '') {
                                $this->missingSummary = true;
                                wfProfileOut( $fname );
-                               return( true );
+                               return self::AS_SUMMARY_NEEDED;
                        }
                }
 
@@ -824,10 +922,14 @@ class EditPage {
                if( $this->section == 'new' ) {
                        if ( $this->textbox1 == '' ) {
                                $this->missingComment = true;
-                               return true;
+                               return self::AS_TEXTBOX_EMPTY;
                        }
                        if( $this->summary != '' ) {
-                               $sectionanchor = $this->sectionAnchor( $this->summary );
+                               $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
+                               # This is a new section, so create a link to the new section
+                               # in the revision summary.
+                               $cleanSummary = $wgParser->stripSectionName( $this->summary );
+                               $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
                        }
                } elseif( $this->section != '' ) {
                        # Try to get a section anchor from the section source, redirect to edited section if header found
@@ -837,7 +939,7 @@ class EditPage {
                        # we can't deal with anchors, includes, html etc in the header for now,
                        # headline would need to be parsed to improve this
                        if($hasmatch and strlen($matches[2]) > 0) {
-                               $sectionanchor = $this->sectionAnchor( $matches[2] );
+                               $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
                        }
                }
                wfProfileOut( "$fname-sectionanchor" );
@@ -854,19 +956,19 @@ class EditPage {
                if ( $this->kblength > $wgMaxArticleSize ) {
                        $this->tooBig = true;
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
                }
 
                # update the article here
                if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
-                       $this->watchthis, '', $sectionanchor ) ) {
+                       $this->watchthis, $bot, $sectionanchor ) ) {
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_SUCCESS_UPDATE;
                } else {
                        $this->isConflict = true;
                }
                wfProfileOut( $fname );
-               return true;
+               return self::AS_END;
        }
 
        /**
@@ -878,9 +980,9 @@ class EditPage {
                $this->summary = '';
                $this->textbox1 = $this->getContent(false);
                if ($this->textbox1 === false) return false;
-               
-               if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
-                       $this->textbox1 = wfMsgWeirdKey( $this->mArticle->mTitle->getText() );
+
+               if ( !$this->mArticle->exists() && $this->mTitle->getNamespace() == NS_MEDIAWIKI )
+                       $this->textbox1 = wfMsgWeirdKey( $this->mTitle->getText() );
                wfProxyCheck();
                return true;
        }
@@ -892,7 +994,7 @@ class EditPage {
         *                      near the top, for captchas and the like.
         */
        function showEditForm( $formCallback=null ) {
-               global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
+               global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle;
 
                $fname = 'EditPage::showEditForm';
                wfProfileIn( $fname );
@@ -906,8 +1008,12 @@ class EditPage {
                # Enabled article-related sidebar, toplinks, etc.
                $wgOut->setArticleRelated( true );
 
+               if ( $this->formtype == 'preview' ) {
+                       $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
+               }
+
                if ( $this->isConflict ) {
-                       $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
+                       $s = wfMsg( 'editconflict', $wgTitle->getPrefixedText() );
                        $wgOut->setPageTitle( $s );
                        $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 
@@ -915,40 +1021,42 @@ class EditPage {
                        $this->textbox1 = $this->getContent();
                        $this->edittime = $this->mArticle->getTimestamp();
                } else {
-
                        if( $this->section != '' ) {
                                if( $this->section == 'new' ) {
-                                       $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
+                                       $s = wfMsg('editingcomment', $wgTitle->getPrefixedText() );
                                } else {
-                                       $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
+                                       $s = wfMsg('editingsection', $wgTitle->getPrefixedText() );
                                        $matches = array();
                                        if( !$this->summary && !$this->preview && !$this->diff ) {
                                                preg_match( "/^(=+)(.+)\\1/mi",
                                                        $this->textbox1,
                                                        $matches );
                                                if( !empty( $matches[2] ) ) {
-                                                       $this->summary = "/* ". trim($matches[2])." */ ";
+                                                       global $wgParser;
+                                                       $this->summary = "/* " . 
+                                                               $wgParser->stripSectionName(trim($matches[2])) . 
+                                                               " */ ";
                                                }
                                        }
                                }
                        } else {
-                               $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
+                               $s = wfMsg( 'editing', $wgTitle->getPrefixedText() );
                        }
                        $wgOut->setPageTitle( $s );
 
                        if ( $this->missingComment ) {
-                               $wgOut->addWikiText( wfMsg( 'missingcommenttext' ) );
+                               $wgOut->addWikiText( '<div id="mw-missingcommenttext">' . wfMsg( 'missingcommenttext' ) . '</div>' );
                        }
 
                        if( $this->missingSummary && $this->section != 'new' ) {
-                               $wgOut->addWikiText( wfMsg( 'missingsummary' ) );
+                               $wgOut->addWikiText( '<div id="mw-missingsummary">' . wfMsg( 'missingsummary' ) . '</div>' );
                        }
 
-                        if( $this->missingSummary && $this->section == 'new' ) {
-                                $wgOut->addWikiText( wfMsg( 'missingcommentheader' ) );
-                        }
+                       if( $this->missingSummary && $this->section == 'new' ) {
+                               $wgOut->addWikiText( '<div id="mw-missingcommentheader">' . wfMsg( 'missingcommentheader' ) . '</div>' );
+                       }
 
-                       if( !$this->hookError == '' ) {
+                       if( $this->hookError !== '' ) {
                                $wgOut->addWikiText( $this->hookError );
                        }
 
@@ -957,9 +1065,13 @@ class EditPage {
                        }
                        if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
                        // Let sysop know that this will make private content public if saved
-                               if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
+                               
+                               if( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
+                                       $wgOut->addWikiText( wfMsg( 'rev-deleted-text-permission' ) );
+                               } else if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
                                        $wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
                                }
+                               
                                if( !$this->mArticle->mRevision->isCurrent() ) {
                                        $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
                                        $wgOut->addWikiText( wfMsg( 'editingold' ) );
@@ -968,16 +1080,16 @@ class EditPage {
                }
 
                if( wfReadOnly() ) {
-                       $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
+                       $wgOut->addHTML( '<div id="mw-read-only-warning">'.wfMsgWikiHTML( 'readonlywarning' ).'</div>' );
                } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
-                       $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
+                       $wgOut->addHTML( '<div id="mw-anon-edit-warning">'.wfMsgWikiHTML( 'anoneditwarning' ).'</div>' );
                } else {
                        if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
                                # Check the skin exists
                                if( $this->isValidCssJsSubpage ) {
                                        $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
                                } else {
-                                       $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
+                                       $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() ) );
                                }
                        }
                }
@@ -992,20 +1104,26 @@ class EditPage {
                                if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' )
                                        $notice = '';
                        } else {
-                               # It's either cascading protection or regular protection; work out which
-                               list($cascadeSources, $restrictions) = $this->mTitle->getCascadeProtectionSources();
-                               if ( !$cascadeSources || count( $cascadeSources ) == 0 ) {
-                                       # Regular protection
-                                       $notice = wfMsg( 'protectedpagewarning' );
-                               } else {
-                                       # Cascading protection; explain, and list the titles responsible
-                                       $notice = wfMsg( 'cascadeprotectedwarning' ) . "\n";
-                                       foreach( $cascadeSources as $source )
-                                               $notice .= '* [[:' . $source->getPrefixedText() . "]]\n";
+                               # Then it must be protected based on static groups (regular)
+                               $notice = wfMsg( 'protectedpagewarning' );
+                       }
+                       $wgOut->addWikiText( $notice );
+               }
+               if ( $this->mTitle->isCascadeProtected() ) {
+                       # Is this page under cascading protection from some source pages?
+                       list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
+                       if ( count($cascadeSources) > 0 ) {
+                               # Explain, and list the titles responsible
+                               $notice = wfMsgExt( 'cascadeprotectedwarning', array('parsemag'), count($cascadeSources) ) . "\n";
+                               foreach( $cascadeSources as $page ) {
+                                       $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
                                }
                        }
                        $wgOut->addWikiText( $notice );
                }
+               if( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) != array() ){
+                       $wgOut->addWikiText( wfMsg( 'titleprotectedwarning' ) );
+               }
 
                if ( $this->kblength === false ) {
                        $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
@@ -1031,12 +1149,12 @@ class EditPage {
 
                $q = 'action=submit';
                #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
-               $action = $this->mTitle->escapeLocalURL( $q );
+               $action = $wgTitle->escapeLocalURL( $q );
 
                $summary = wfMsg('summary');
                $subject = wfMsg('subject');
 
-               $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
+               $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedText(),
                                wfMsgExt('cancel', array('parseinline')) );
                $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
                $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
@@ -1084,7 +1202,7 @@ class EditPage {
                        }
 
                        if ( 'diff' == $this->formtype ) {
-                               $wgOut->addHTML( $this->getDiff() );
+                               $this->showDiff();
                        }
                }
 
@@ -1110,7 +1228,7 @@ class EditPage {
                if( !$this->preview && !$this->diff ) {
                        $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
                }
-               $templates = ($this->preview || $this->section) ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
+               $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
                $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
 
                global $wgUseMetadataEdit ;
@@ -1162,6 +1280,8 @@ END
                        call_user_func_array( $formCallback, array( &$wgOut ) );
                }
 
+               wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
+
                // Put these up at the top to ensure they aren't lost on early form submission
                $wgOut->addHTML( "
 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
@@ -1173,6 +1293,7 @@ END
 $recreate
 {$commentsubject}
 {$subjectpreview}
+{$this->editFormTextBeforeContent}
 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
 cols='{$cols}'{$ew} $hidden>
 END
@@ -1222,10 +1343,7 @@ END
                 * include the constant suffix to prevent editing from
                 * broken text-mangling proxies.
                 */
-               if ( $wgUser->isLoggedIn() )
-                       $token = htmlspecialchars( $wgUser->editToken() );
-               else
-                       $token = EDIT_TOKEN_SUFFIX;
+               $token = htmlspecialchars( $wgUser->editToken() );
                $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
 
 
@@ -1250,7 +1368,7 @@ END
                        $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 
                        $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
-                       $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
+                       $wgOut->addHTML( "<textarea tabindex='6' id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}'>"
                                . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
                }
                $wgOut->addHTML( $this->editFormTextBottom );
@@ -1264,7 +1382,7 @@ END
                        }
 
                        if ( $this->formtype == 'diff') {
-                               $wgOut->addHTML( $this->getDiff() );
+                               $this->showDiff();
                        }
 
                }
@@ -1285,6 +1403,7 @@ END
                if($this->mTitle->getNamespace() == NS_CATEGORY) {
                        $this->mArticle->openShowCategory();
                }
+               wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
                $wgOut->addHTML( $text );
                if($this->mTitle->getNamespace() == NS_CATEGORY) {
                        $this->mArticle->closeShowCategory();
@@ -1308,8 +1427,7 @@ END
                        htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
                        '"></script>' . "\n" );
                $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
-               return "return !livePreview(" .
-                       "getElementById('wikiPreview')," .
+               return "return !lpDoPreview(" .
                        "editform.wpTextbox1.value," .
                        '"' . $liveAction . '"' . ")";
        }
@@ -1356,14 +1474,13 @@ END
                wfProfileIn( $fname );
 
                if ( $this->mTriedSave && !$this->mTokenOk ) {
-                       $msg = 'session_fail_preview';
+                       if ( $this->mTokenOkExceptSuffix ) {
+                               $note = wfMsg( 'token_suffix_mismatch' );
+                       } else {
+                               $note = wfMsg( 'session_fail_preview' );
+                       }
                } else {
-                       $msg = 'previewnote';
-               }
-               $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
-                       "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
-               if ( $this->isConflict ) {
-                       $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
+                       $note = wfMsg( 'previewnote' );
                }
 
                $parserOptions = ParserOptions::newFromUser( $wgUser );
@@ -1381,16 +1498,15 @@ END
                # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 
                if ( $this->isCssJsSubpage ) {
-                       if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
+                       if(preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
                                $previewtext = wfMsg('usercsspreview');
-                       } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
+                       } else if(preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
                                $previewtext = wfMsg('userjspreview');
                        }
                        $parserOptions->setTidy(true);
-                       $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
+                       $parserOutput = $wgParser->parse( $previewtext , $this->mTitle, $parserOptions );
                        $wgOut->addHTML( $parserOutput->mText );
-                       wfProfileOut( $fname );
-                       return $previewhead;
+                       $previewHTML = '';
                } else {
                        $toparse = $this->textbox1;
 
@@ -1402,19 +1518,38 @@ END
 
                        if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
                        $parserOptions->setTidy(true);
+                       $parserOptions->enableLimitReport();
                        $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
-                                       $wgTitle, $parserOptions );
+                                       $this->mTitle, $parserOptions );
 
                        $previewHTML = $parserOutput->getText();
                        $wgOut->addParserOutputNoText( $parserOutput );
+                       
+                       # ParserOutput might have altered the page title, so reset it
+                       # Also, use the title defined by DISPLAYTITLE magic word when present
+                       if( ( $dt = $parserOutput->getDisplayTitle() ) !== false ) {
+                               $wgOut->setPageTitle( wfMsg( 'editing', $dt ) );
+                       } else {
+                               $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );                        
+                       }
 
                        foreach ( $parserOutput->getTemplates() as $ns => $template)
                                foreach ( array_keys( $template ) as $dbk)
                                        $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
 
-                       wfProfileOut( $fname );
-                       return $previewhead . $previewHTML;
+                       if ( count( $parserOutput->getWarnings() ) ) {
+                               $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
+                       }
                }
+
+               $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
+                       "<div class='previewnote'>" . $wgOut->parse( $note ) . "</div>\n";
+               if ( $this->isConflict ) {
+                       $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
+               }
+
+               wfProfileOut( $fname );
+               return $previewhead . $previewHTML;
        }
 
        /**
@@ -1448,34 +1583,18 @@ END
         * Produce the stock "please login to edit pages" page
         */
        function userNotLoggedInPage() {
-               global $wgUser, $wgOut;
+               global $wgUser, $wgOut, $wgTitle;
                $skin = $wgUser->getSkin();
 
                $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
-               $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
+               $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
 
                $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
                $wgOut->setArticleRelated( false );
 
                $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
-               $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
-       }
-
-       /**
-        * Creates a basic error page which informs the user that
-        * they have to validate their email address before being
-        * allowed to edit.
-        */
-       function userNotConfirmedPage() {
-               global $wgOut;
-
-               $wgOut->setPageTitle( wfMsg( 'confirmedittitle' ) );
-               $wgOut->setRobotPolicy( 'noindex,nofollow' );
-               $wgOut->setArticleRelated( false );
-
-               $wgOut->addWikiText( wfMsg( 'confirmedittext' ) );
-               $wgOut->returnToMain( false );
+               $wgOut->returnToMain( false, $wgTitle );
        }
 
        /**
@@ -1483,14 +1602,14 @@ END
         * they have attempted to edit a nonexistant section.
         */
        function noSuchSectionPage() {
-               global $wgOut;
+               global $wgOut, $wgTitle;
 
                $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
                $wgOut->setArticleRelated( false );
 
                $wgOut->addWikiText( wfMsg( 'nosuchsectiontext', $this->section ) );
-               $wgOut->returnToMain( false );
+               $wgOut->returnToMain( false, $wgTitle );
        }
 
        /**
@@ -1499,17 +1618,19 @@ END
         * @param $match Text which triggered one or more filters
         */
        function spamPage( $match = false ) {
-               global $wgOut;
+               global $wgOut, $wgTitle;
 
                $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
                $wgOut->setArticleRelated( false );
 
+               $wgOut->addHtml( '<div id="spamprotected">' );
                $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
                if ( $match )
-                       $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
+                       $wgOut->addWikiText( wfMsg( 'spamprotectionmatch',wfEscapeWikiText( $match ) ) );
+               $wgOut->addHtml( '</div>' );
 
-               $wgOut->returnToMain( false );
+               $wgOut->returnToMain( false, $wgTitle );
        }
 
        /**
@@ -1524,7 +1645,7 @@ END
 
                // This is the revision the editor started from
                $baseRevision = Revision::loadFromTimestamp(
-                       $db, $this->mArticle->mTitle, $this->edittime );
+                       $db, $this->mTitle, $this->edittime );
                if( is_null( $baseRevision ) ) {
                        wfProfileOut( $fname );
                        return false;
@@ -1533,7 +1654,7 @@ END
 
                // The current state, we want to merge updates into it
                $currentRevision =  Revision::loadFromTitle(
-                       $db, $this->mArticle->mTitle );
+                       $db, $this->mTitle );
                if( is_null( $currentRevision ) ) {
                        wfProfileOut( $fname );
                        return false;
@@ -1573,6 +1694,14 @@ END
                return true;
        }
 
+       /**
+        * @deprecated use $wgParser->stripSectionName()
+        */
+       function pseudoParseSectionAnchor( $text ) {
+               global $wgParser;
+               return $wgParser->stripSectionName( $text );
+       }
+
        /**
         * Format an anchor fragment as it would appear for a given section name
         * @param string $text
@@ -1580,19 +1709,8 @@ END
         * @private
         */
        function sectionAnchor( $text ) {
-               $headline = Sanitizer::decodeCharReferences( $text );
-               # strip out HTML
-               $headline = preg_replace( '/<.*?' . '>/', '', $headline );
-               $headline = trim( $headline );
-               $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
-               $replacearray = array(
-                       '%3A' => ':',
-                       '%' => '.'
-               );
-               return str_replace(
-                       array_keys( $replacearray ),
-                       array_values( $replacearray ),
-                       $sectionanchor );
+               global $wgParser;
+               return $wgParser->guessSectionNameFromWikiText( $text );
        }
 
        /**
@@ -1848,7 +1966,8 @@ END
                        'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
                );
                $buttons['diff'] = wfElement('input', $temp, '');
-
+               
+               wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons ) );
                return $buttons;
        }
 
@@ -1870,12 +1989,15 @@ END
                header( 'Content-type: text/xml; charset=utf-8' );
                header( 'Cache-control: no-cache' );
 
+               $previewText = $this->getPreviewText();
+               #$categories = $skin->getCategoryLinks();
+
                $s =
                '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
-               Xml::openElement( 'livepreview' ) .
-               Xml::element( 'preview', null, $this->getPreviewText() ) .
-               Xml::element( 'br', array( 'style' => 'clear: both;' ) ) .
-               Xml::closeElement( 'livepreview' );
+               Xml::tags( 'livepreview', null,
+                       Xml::element( 'preview', null, $previewText )
+                       #.      Xml::element( 'category', null, $categories )
+               );
                echo $s;
        }
 
@@ -1886,10 +2008,8 @@ END
         *
         * If this is a section edit, we'll replace the section as for final
         * save and then make a comparison.
-        *
-        * @return string HTML
         */
-       function getDiff() {
+       function showDiff() {
                $oldtext = $this->mArticle->fetchContent();
                $newtext = $this->mArticle->replaceSection(
                        $this->section, $this->textbox1, $this->summary, $this->edittime );
@@ -1900,11 +2020,13 @@ END
                        $de = new DifferenceEngine( $this->mTitle );
                        $de->setText( $oldtext, $newtext );
                        $difftext = $de->getDiff( $oldtitle, $newtitle );
+                       $de->showDiffStyle();
                } else {
                        $difftext = '';
                }
 
-               return '<div id="wikiDiff">' . $difftext . '</div>';
+               global $wgOut;
+               $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
        }
 
        /**
@@ -2027,7 +2149,99 @@ END
                $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
                $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
        }
+       
+       /**
+        * If there are rows in the deletion log for this page, show them,
+        * along with a nice little note for the user
+        *
+        * @param OutputPage $out
+        */
+       private function showDeletionLog( $out ) {
+               $title = $this->mTitle;
+               $reader = new LogReader(
+                       new FauxRequest(
+                               array(
+                                       'page' => $title->getPrefixedText(),
+                                       'type' => 'delete',
+                                       )
+                       )
+               );
+               if( $reader->hasRows() ) {
+                       $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
+                       $out->addWikiText( wfMsg( 'recreate-deleted-warn' ) );
+                       $viewer = new LogViewer( $reader );
+                       $viewer->showList( $out );
+                       $out->addHtml( '</div>' );
+               }
+       }
 
-}
+       /**
+        * Attempt submission
+        * @return bool false if output is done, true if the rest of the form should be displayed
+        */
+       function attemptSave() {
+               global $wgUser, $wgOut, $wgTitle, $wgRequest;
+
+               $resultDetails = false;
+               $value = $this->internalAttemptSave( $resultDetails, $wgUser->isAllowed('bot') && $wgRequest->getBool('bot', true) );
+               
+               if( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
+                       $this->didSave = true;
+               }
+
+               switch ($value) {
+                       case self::AS_HOOK_ERROR_EXPECTED:
+                       case self::AS_CONTENT_TOO_BIG:
+                       case self::AS_ARTICLE_WAS_DELETED:
+                       case self::AS_CONFLICT_DETECTED:
+                       case self::AS_SUMMARY_NEEDED:
+                       case self::AS_TEXTBOX_EMPTY:
+                       case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
+                       case self::AS_END:
+                               return true;
+
+                       case self::AS_HOOK_ERROR:
+                       case self::AS_FILTERING:
+                       case self::AS_SUCCESS_NEW_ARTICLE:
+                       case self::AS_SUCCESS_UPDATE:
+                               return false;
 
-?>
+                       case self::AS_SPAM_ERROR:
+                               $this->spamPage ( $resultDetails['spam'] );
+                               return false;
+
+                       case self::AS_BLOCKED_PAGE_FOR_USER:
+                               $this->blockedPage();
+                               return false;
+
+                       case self::AS_IMAGE_REDIRECT_ANON:
+                               $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
+                               return false;
+
+                       case self::AS_READ_ONLY_PAGE_ANON:
+                               $this->userNotLoggedInPage();
+                               return false;
+
+                       case self::AS_READ_ONLY_PAGE_LOGGED:
+                       case self::AS_READ_ONLY_PAGE:
+                               $wgOut->readOnlyPage();
+                               return false;
+
+                       case self::AS_RATE_LIMITED:
+                               $wgOut->rateLimited();
+                               return false;
+
+                       case self::AS_NO_CREATE_PERMISSION;
+                               $this->noCreatePermission();
+                               return;
+                       
+                       case self::AS_BLANK_ARTICLE:
+                               $wgOut->redirect( $wgTitle->getFullURL() );
+                               return false;
+
+                       case self::AS_IMAGE_REDIRECT_LOGGED:
+                               $wgOut->permissionRequired( 'upload' );
+                               return false;
+               }
+       }
+}