code: def handle_comment(self, comment):
          
  
          match = _COND_COMMENT_PATTERN.match(comment)
          if match is not None:
              cond = match.group(1)
              content = match.group(2)
  
              self._buffer.append(_COND_COMMENT_START_FORMAT % cond)
              self._push_status()
              self.feed(content)
              self._pop_status()
              self._buffer.append(_COND_COMMENT_END_FORMAT)
          elif not self.remove_comments:
              self._buffer.append(_COMMENT_FORMAT % comment)
docs: Remove comment except IE conditional comment.
  
          .. seealso::
             `About conditional comments
              <http://msdn.microsoft.com/en-us/library/ms537512.ASPX>`_