Merge 63773 - 2010-07-20 Abhishek Arya <inferno@chromium.org>...

WebCore/editing/InsertLineBreakCommand.cpp

 /*
  * Copyright (C) 2005, 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 118 matching lines @@
         // Insert an extra br or '\n' if the just inserted one collapsed.
         if (!isStartOfParagraph(VisiblePosition(Position(nodeToInsert.get(), 0))))
             insertNodeBefore(nodeToInsert->cloneNode(false).get(), nodeToInsert.get());
         
         setEndingSelection(VisibleSelection(positionInParentAfterNode(nodeToInsert.get()), DOWNSTREAM));
     // If we're inserting after all of the rendered text in a text node, or into a non-text node,
     // a simple insertion is sufficient.
     } else if (pos.deprecatedEditingOffset() >= caretMaxOffset(pos.node()) || !pos.node()->isTextNode()) {
         insertNodeAt(nodeToInsert.get(), pos);
         setEndingSelection(VisibleSelection(positionInParentAfterNode(nodeToInsert.get()), DOWNSTREAM));
-    } else {
+    } else if (pos.node()->isTextNode()) {
         // Split a text node
-        ASSERT(pos.node()->isTextNode());
-        
-        // Do the split
         Text* textNode = static_cast<Text*>(pos.node());
         splitTextNode(textNode, pos.deprecatedEditingOffset());
         insertNodeBefore(nodeToInsert, textNode);
         Position endingPosition = Position(textNode, 0);
         
         // Handle whitespace that occurs after the split
         updateLayout();
         if (!endingPosition.isRenderedCharacter()) {
             Position positionBeforeTextNode(positionInParentBeforeNode(textNode));
             // Clear out all whitespace and insert one non-breaking space
@@ skipping 28 matching lines @@
         // before the line break (if the line break is at the end of a block it isn't selectable).
         // So, this next call sets the endingSelection() to a caret just after the line break 
         // that we inserted, or just before it if it's at the end of a block.
         setEndingSelection(endingSelection().visibleEnd());
     }
 
     rebalanceWhitespace();
 }
 
 }