anchor.diff:                  {ok, Ws}             -> Ws
               end,
       case proplists:get_bool(report_warnings, Opts) of
  -        true  -> lists:foreach(fun report_warning/1, Warns);
  +        true  -> lists:foreach(?'fun report_warning/1', Warns);
           false -> ok
       end.
   
  
positive.code: possibly_write_file(_FileName, '$not_generated', _Opts) ->
      ok.
  
  file_op(Fn, Args, Opts) ->
      FileOp = proplists:get_value(file_op, Opts, fun use_the_file_module/2),
      FileOp(Fn, Args).
  
  use_the_file_module(Fn, Args) ->
  
negative.code:           (PathR) ->
                 list_to_atom(
                   string:join(
                     lists:map(?'fun atom_to_list/1', lists:reverse(PathR)),
                     "."))
         end)].
  
  