def unmangle_name(s: str) ->str:
    """
    Convert a name with ``$uXXXX`` character runs into their original forms, which may not
    necessarily be safe DAML identifiers.

    :param s: The string to interpret.
    :return: A new string with the appropriate substitutions.
    """
    return s.replace('$u002b', '+').replace('$u005b', '[').replace('$u005d',
        ']').replace('$u003c', '<').replace('$u003e', '>').replace('$u003a',
        ':').replace('$u0022', '"').replace('$u0028', '(').replace('$u0029',
        ')').replace('$u002f', '/').replace('$u002c', ',').replace('$u003d',
        '=')
