code: private boolean _anyCharactersAreTheSame ()
    {
      return _isSameCharacter (m_cSeparatorChar, m_cQuoteChar) ||
             _isSameCharacter (m_cSeparatorChar, m_cEscapeChar) ||
             _isSameCharacter (m_cQuoteChar, m_cEscapeChar);
    }
docs: checks to see if any two of the three characters are the same. This is
  because in openCSV the separator, quote, and escape characters must the
  different.
  
  @return <code>true</code> if any two of the three are the same.