docs: def copy(self, tagname, **kwargs):
          """
          Returns a new instance of `TagWrap` using the given *tagname* that has
          all the same attributes as this instance.  If *kwargs* is given they
          will override the attributes of the created instance.
          """
          new_kwargs = {
              'replacement': self.replacement,
              'whitelist': self.whitelist,
              'safe_mode': self.safe_mode,
              'log_rejects': self.log_rejects,
              'ending_slash': self.ending_slash
          }
          new_kwargs.update(**kwargs)
          return TagWrap(tagname, **new_kwargs)