Bug 607584 - CR in a paragraph with an id attribute creates a second paragraph of same id; r=ehsan a=roc

editor/libeditor/html/nsHTMLEditRules.cpp

@@ -6678,7 +6678,12 @@ nsHTMLEditRules::SplitParagraph(nsIDOMNode *aPara,
     res = mHTMLEditor->DeleteNode(aBRNode);  
     NS_ENSURE_SUCCESS(res, res);
   }
-  
+
+  // remove ID attribute on the paragraph we just created
+  nsCOMPtr<nsIDOMElement> rightElt = do_QueryInterface(rightPara);
+  res = mHTMLEditor->RemoveAttribute(rightElt, NS_LITERAL_STRING("id"));
+  NS_ENSURE_SUCCESS(res, res);
+
   // check both halves of para to see if we need mozBR
   res = InsertMozBRIfNeeded(leftPara);
   NS_ENSURE_SUCCESS(res, res);