code: def _sub_ms_char(self, match):
          
          orig = match.group(1)
          if self.smart_quotes_to == 'ascii':
              sub = self.MS_CHARS_TO_ASCII.get(orig).encode()
          else:
              sub = self.MS_CHARS.get(orig)
              if type(sub) == tuple:
                  if self.smart_quotes_to == 'xml':
                      sub = '&#x'.encode() + sub[1].encode() + ';'.encode()
                  else:
                      sub = '&'.encode() + sub[0].encode() + ';'.encode()
              else:
                  sub = sub.encode()
          return sub
docs: Changes a MS smart quote character to an XML or HTML
          entity, or an ASCII character.