code: def t_escaped_CARRIAGE_RETURN_CHAR(self, t):
          r'\x72'  # 'r'
          t.lexer.pop_state()
          t.value = unichr(0x000d)
          return f t_escaped_CARRIAGE_RETURN_CHAR(self, t):
          r'\x72'  # 'r'
          t.lexer.pop_state()
          t.value = unichr(0x000d)
          return t
docs: r'\x72