def sort(self):
super().sort()<EOL>self.all = list(self)<EOL>
r"""Sort both the list and the proxy `.all`.

        Since it doesn't make sense to sort the proxy, all whitespace is
        dropped.

        >>> args = TexArgs(['\n', RArg('arg1'), OArg('arg2')])
        >>> args.sort()
        >>> len(args) == len(args.all)
        True