Index: CKEditor/trunk/_samples/output_for_flash.html
===================================================================
--- CKEditor/trunk/_samples/output_for_flash.html	(revision 6355)
+++ CKEditor/trunk/_samples/output_for_flash.html	(revision 6357)
@@ -246,5 +246,5 @@
 					}
 
-					if ( element.attributes.style == '' )
+					if ( element.attributes.style === '' )
 						delete element.attributes.style;
 
Index: CKEditor/trunk/_source/core/dom/element.js
===================================================================
--- CKEditor/trunk/_source/core/dom/element.js	(revision 6355)
+++ CKEditor/trunk/_source/core/dom/element.js	(revision 6357)
@@ -260,7 +260,7 @@
 	   {
 		   if ( !this.isBlockBoundary() )
-			   return;
-
-		   var lastChild = this.getLast() ;
+			   return null;
+
+		   var lastChild = this.getLast();
 
 		   // Ignore empty/spaces text.
@@ -269,9 +269,11 @@
 
 		   if ( lastChild &&
-			   ( CKEDITOR.env.ie && lastChild.type == CKEDITOR.NODE_TEXT && CKEDITOR.tools.trim( lastChild.getText() ).match( /^(?: |\xa0)$/ )
-			   ||	CKEDITOR.env.gecko && CKEDITOR.env.webkit && lastChild.is( 'br' ) ) )
+				   ( CKEDITOR.env.ie && lastChild.type == CKEDITOR.NODE_TEXT && CKEDITOR.tools.trim( lastChild.getText() ).match( /^(?: |\xa0)$/ )
+						   || CKEDITOR.env.gecko && CKEDITOR.env.webkit && lastChild.is( 'br' ) ) )
 		   {
 			   return lastChild;
 		   }
+
+		   return null;
 	   },
 
@@ -1584,4 +1586,6 @@
 			else
 				this.setAttribute( name, value );
+
+			return null;
 		}
 	});
Index: CKEditor/trunk/_source/core/dom/range.js
===================================================================
--- CKEditor/trunk/_source/core/dom/range.js	(revision 6355)
+++ CKEditor/trunk/_source/core/dom/range.js	(revision 6357)
@@ -1793,5 +1793,5 @@
 
 				// Check if elements path at both boundaries are editable.
-				return !( checkNodesEditable( startNode, endNode ) && checkNodesEditable( endNode, startNode ) )
+				return !( checkNodesEditable( startNode, endNode ) && checkNodesEditable( endNode, startNode ) );
 			};
 		})(),
Index: CKEditor/trunk/_source/plugins/placeholder/plugin.js
===================================================================
--- CKEditor/trunk/_source/plugins/placeholder/plugin.js	(revision 6355)
+++ CKEditor/trunk/_source/plugins/placeholder/plugin.js	(revision 6357)
@@ -156,4 +156,6 @@
 		else
 			editor.insertElement( element );
+
+		return null;
 	},
 
Index: CKEditor/trunk/_source/plugins/styles/plugin.js
===================================================================
--- CKEditor/trunk/_source/plugins/styles/plugin.js	(revision 6355)
+++ CKEditor/trunk/_source/plugins/styles/plugin.js	(revision 6357)
@@ -929,5 +929,5 @@
 	}
 
-	var nonWhitespaces = CKEDITOR.dom.walker.whitespaces( true );
+	var nonWhitespaces = CKEDITOR.dom.walker.whitespaces( 1 );
 	/**
 	 * Merge a <pre> block with a previous sibling if available.
@@ -1185,5 +1185,4 @@
 	}
 
-	var nonWhitespaces = CKEDITOR.dom.walker.whitespaces( 1 );
 	// If the element has no more attributes, remove it.
 	function removeNoAttribsElement( element )
Index: CKEditor/trunk/_source/plugins/tabletools/plugin.js
===================================================================
--- CKEditor/trunk/_source/plugins/tabletools/plugin.js	(revision 6355)
+++ CKEditor/trunk/_source/plugins/tabletools/plugin.js	(revision 6357)
@@ -232,4 +232,6 @@
 				selectionOrRow.remove();
 		}
+
+		return null;
 	}
 
Index: CKEditor/trunk/_source/plugins/wysiwygarea/plugin.js
===================================================================
--- CKEditor/trunk/_source/plugins/wysiwygarea/plugin.js	(revision 6355)
+++ CKEditor/trunk/_source/plugins/wysiwygarea/plugin.js	(revision 6357)
@@ -75,5 +75,5 @@
 			if ( $sel.type == 'Control' )
 				$sel.clear();
-				else if  ( selection.getType() == CKEDITOR.SELECTION_TEXT )
+			else if ( selection.getType() == CKEDITOR.SELECTION_TEXT )
 			{
 				// Due to IE bugs on handling contenteditable=false blocks
@@ -81,6 +81,6 @@
 				// delete the selection first.
 
-					range = selection.getRanges()[0],
-						endContainer = range && range.endContainer;
+				range = selection.getRanges()[ 0 ];
+				var endContainer = range && range.endContainer;
 
 				if ( endContainer &&
@@ -98,9 +98,9 @@
 				$sel.createRange().pasteHTML( data );
 			}
-				catch (e) {}
+			catch (e) {}
 
 			if ( selIsLocked )
 				this.getSelection().lock();
-			}
+		}
 		else
 			this.document.$.execCommand( 'inserthtml', false, data );
@@ -630,5 +630,5 @@
 								var type = element.getAttribute( 'type' );
 								if ( type == 'submit' || type == 'reset' )
-									evt.data.preventDefault()
+									evt.data.preventDefault();
 							}
 						});