Ticket #5657: 5657.patch

_source/plugins/wysiwygarea/plugin.js

@@ -270 +270 @@
 
                         var frameLabel = editor.lang.editorTitle.replace( '%1', editor.name );
 
+                        var contentDomReadyHandler;
                         editor.on( 'editingBlockReady', function()
                                 {
                                         var mainElement,
@@ -319 +320 @@
 
                                                                 var doc = iframe.getFrameDocument().$;
 
-                                                                doc.open();
+                                                                // Don't leave any history log in IE. (#5657)
+                                                                doc.open( "text/html","replace" );
                                                                 doc.write( data );
                                                                 doc.close();
                                                         });
@@ -329 +331 @@
 
                                         // The script that launches the bootstrap logic on 'domReady', so the document
                                         // is fully editable even before the editing iframe is fully loaded (#4455).
-                                        var contentDomReadyHandler = CKEDITOR.tools.addFunction( contentDomReady );
+                                        contentDomReadyHandler = CKEDITOR.tools.addFunction( contentDomReady );
                                         var activationScript =
                                                 '<script id="cke_actscrpt" type="text/javascript" cke_temp="1">' +
                                                         ( isCustomDomain ? ( 'document.domain="' + document.domain + '";' ) : '' ) +
@@ -352 +354 @@
                                                 var script = domDocument.getElementById( "cke_actscrpt" );
                                                 script.parentNode.removeChild( script );
 
-                                                CKEDITOR.tools.removeFunction( contentDomReadyHandler );
 
                                                 body.spellcheck = !editor.config.disableNativeSpellChecker;
 
@@ -781 +782 @@
                                 } );
                                 editor.on( 'destroy', function()
                                 {
+                                        CKEDITOR.tools.removeFunction( contentDomReadyHandler );
                                         ieFocusGrabber.clearCustomData();
                                 } );
                         }