Use correct offset when attribute auto is present

Source/core/dom/Position.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2009 Apple 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 210 matching lines @@
         return positionInParentAfterNode(*m_anchorNode);
     }
 
     return Position(containerNode(), computeOffsetInContainerNode(), PositionIsOffsetInAnchor);
 }
 
 Node* Position::computeNodeBeforePosition() const
 {
     if (!m_anchorNode)
         return 0;
-
     switch (anchorType()) {
     case PositionIsBeforeChildren:
         return 0;
     case PositionIsAfterChildren:
         return m_anchorNode->lastChild();
     case PositionIsOffsetInAnchor:
         return m_anchorNode->traverseToChildAt(m_offset - 1); // -1 converts to traverseToChildAt((unsigned)-1) and returns null.
     case PositionIsBeforeAnchor:
         return m_anchorNode->previousSibling();
     case PositionIsAfterAnchor:
@@ skipping 1011 matching lines @@
         }
     } else {
         InlineBox* nextBox = inlineBox->nextLeafChildIgnoringLineBreak();
         if (!nextBox || nextBox->bidiLevel() < level) {
             // Right edge of a secondary run. Set to the left edge of the entire run.
             while (InlineBox* prevBox = inlineBox->prevLeafChildIgnoringLineBreak()) {
                 if (prevBox->bidiLevel() < level)
                     break;
                 inlineBox = prevBox;
             }
-            caretOffset = inlineBox->caretLeftmostOffset();
+            if (m_anchorNode->selfOrAncestorHasDirAutoAttribute())
+                caretOffset = inlineBox->bidiLevel() < level ? inlineBox->caretLeftmostOffset() : inlineBox->caretRightmostOffset();
+            else
+                caretOffset = inlineBox->caretLeftmostOffset();
         } else if (nextBox->bidiLevel() > level) {
             // Left edge of a "tertiary" run. Set to the right edge of that run.
             while (InlineBox* tertiaryBox = inlineBox->nextLeafChildIgnoringLineBreak()) {
                 if (tertiaryBox->bidiLevel() <= level)
                     break;
                 inlineBox = tertiaryBox;
             }
             caretOffset = inlineBox->caretRightmostOffset();
         }
     }
@@ skipping 90 matching lines @@
     pos.showTreeForThis();
 }
 
 void showTree(const WebCore::Position* pos)
 {
     if (pos)
         pos->showTreeForThis();
 }
 
 #endif