Fix: view-source fails to display < near chunk boundaries

Source/core/html/parser/HTMLSourceTracker.cpp

 /*
  * Copyright (C) 2010 Adam Barth. 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 14 matching lines @@
 
 #include "config.h"
 #include "core/html/parser/HTMLSourceTracker.h"
 
 #include "core/html/parser/HTMLTokenizer.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace WebCore {
 
 HTMLSourceTracker::HTMLSourceTracker()
+    : m_isStarted(false)
 {
 }
 
 void HTMLSourceTracker::start(SegmentedString& currentInput, HTMLTokenizer* tokenizer, HTMLToken& token)
 {
-    if (token.type() == HTMLToken::Uninitialized) {
+    if (token.type() == HTMLToken::Uninitialized && !m_isStarted) {
         m_previousSource.clear();
         if (tokenizer->numberOfBufferedCharacters())
             m_previousSource = tokenizer->bufferedCharacters();
     } else
         m_previousSource.append(m_currentSource);
 
+    m_isStarted = true;
     m_currentSource = currentInput;
     token.setBaseOffset(m_currentSource.numberOfCharactersConsumed() - m_previousSource.length());
 }
 
 void HTMLSourceTracker::end(SegmentedString& currentInput, HTMLTokenizer* tokenizer, HTMLToken& token)
 {
+    m_isStarted = false;
+
     m_cachedSourceForToken = String();
 
     // FIXME: This work should really be done by the HTMLTokenizer.
     token.end(currentInput.numberOfCharactersConsumed() - tokenizer->numberOfBufferedCharacters());
 }
 
 String HTMLSourceTracker::sourceForToken(const HTMLToken& token)
 {
     if (!m_cachedSourceForToken.isEmpty())
         return m_cachedSourceForToken;
@@ skipping 19 matching lines @@
         ASSERT(!m_currentSource.isEmpty());
         source.append(m_currentSource.currentChar());
         m_currentSource.advance();
     }
 
     m_cachedSourceForToken = source.toString();
     return m_cachedSourceForToken;
 }
 
 }