Split words on text direction boundaries when computing preffered width

Source/core/rendering/RenderText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 1002 matching lines @@
                 break;
             c = uncheckedCharacterAt(j);
             if (isBreakable(breakIterator, j, nextBreakable) && characterAt(j - 1) != softHyphen)
                 break;
             if (breakAll) {
                 betweenWords = false;
                 break;
             }
         }
 
+        // Terminate word boundary at bidi run boundary.
+        j = min(j, run->stop());
         int wordLen = j - i;
         if (wordLen) {
             bool isSpace = (j < len) && c == ' ';
             float w;
             if (wordTrailingSpaceWidth && isSpace)
                 w = widthFromCache(f, i, wordLen + 1, leadWidth + currMaxWidth, textDirection, &fallbackFonts, &glyphOverflow) - wordTrailingSpaceWidth;
             else {
                 w = widthFromCache(f, i, wordLen, leadWidth + currMaxWidth, textDirection, &fallbackFonts, &glyphOverflow);
                 if (c == softHyphen)
                     currMinWidth += hyphenWidth(this, f);
@@ skipping 828 matching lines @@
     }
     secureTextTimer->restartWithNewText(lastTypedCharacterOffset);
 }
 
 PassRefPtr<AbstractInlineTextBox> RenderText::firstAbstractInlineTextBox()
 {
     return AbstractInlineTextBox::getOrCreate(this, m_firstTextBox);
 }
 
 } // namespace WebCore