anchor.diff:                                                   wrangler_syntax:integer(A)),
               NewL=case FA of
                        none ->
  -                         lists:reverse([AQ|L]);
  +                         L0 = wrangler_syntax:list_elements(L),
  +                         L1 = L0++[AQ],
  +                         wrangler_misc:rewrite(L, wrangler_syntax:list(L1));
                        {F1,A1} ->
                            L0 = wrangler_syntax:list_elements(L),
                            L1 = lists:append([begin
                                                   FunName = wrangler_syntax:atom_value(
  -                                                               wrangler_syntax:arity_qualifier_body(E)),
  +                                                            wrangler_syntax:arity_qualifier_body(E)),
                                                   Arity = wrangler_syntax:integer_value(
  -                                                             wrangler_syntax:arity_qualifier_argument(E)),
  +                                                          wrangler_syntax:arity_qualifier_argument(E)),
                                                   case {FunName, Arity} of
                                                       {F1,A1} ->
                                                           [E, AQ];
  
positive.code: %%     the new entity to the end of the export list.
  %%@spec add_to_export_after(attribute(), {function(), arity()},
  %%                        {function(), arity()}|none) -> attribute()
  add_to_export_after(Node, FAtoAdd, FA) ->
      {F, A} = FAtoAdd,
      case is_attribute(Node, export) of
  
negative.code:          mfa_to_fun_def/2,
           insert_an_attr/2,
           remove_from_import/2,
           add_to_export/2,
           add_to_export_after/3,
           pp/1,
           equal/2,
  