Ticket #3801: 3801_2.patch

CHANGES.html

@@ -78 +78 @@
                 <li><a href="http://dev.fckeditor.net/ticket/3829">#3829</a> : Fixed remove empty link on output data.</li>
                 <li><a href="http://dev.fckeditor.net/ticket/3730">#3730</a> : Indent is performing on the whole
                         block instead of selected lines in enterMode = BR.</li>
+                <li><a href="http://dev.fckeditor.net/ticket/3801">#3801</a> : Comments at the start of the document was lost in IE.</li>
         </ul>
         <h3>
                 CKEditor 3.0 RC</h3>

_source/plugins/htmldataprocessor/plugin.js

@@ -256 +256 @@
                 return data;
         }
 
+        function filterWithInnerHtml( data )
+        {
+                var div = document.createElement( 'div' );
+
+                // IE: Comments at the start of the document get lost (#3801)
+                if ( CKEDITOR.env.ie && /^<!--/.test( data ) )
+                {
+                        div.innerHTML = 'a' + data;
+                        data = div.innerHTML.substr( 1 );
+                }
+                else
+                {
+                        div.innerHTML = data;
+                        data = div.innerHTML;
+                }
+
+                return data;
+        }
+
         CKEDITOR.plugins.add( 'htmldataprocessor',
         {
                 requires : [ 'htmlwriter' ],
@@ -310 +329 @@
 
                         // Call the browser to help us fixing a possibly invalid HTML
                         // structure.
-                        var div = document.createElement( 'div' );
-                        div.innerHTML = data;
-                        data = div.innerHTML;
+                        data = filterWithInnerHtml( data );
 
                         if ( CKEDITOR.env.ie )
                                 data = unprotectEncodedTags( data );