anchor.diff:  		  lists:flatmap(Fun0, Exprs)
   	  end,
       Msg = lists:flatmap(Fun, FileAndExprs),
  -    ?wrangler_io(Msg, []).
  +    ?log_warning(Msg).
  
positive.code: 
  output_atom_not_renamed_warnings([], _Msg) -> ok;
  output_atom_not_renamed_warnings(NotRenamed, Msg) ->
      ?wrangler_io(Msg, []),
      output_not_renamed_atom_info(NotRenamed).
  output_atom_renamed_warnings([], _Msg) -> ok;
  output_atom_renamed_warnings(Renamed, Msg) ->
      ?wrangler_io(Msg, []),
      output_renamed_atom_info(Renamed).
  output_not_renamed_atom_info(FileAndPositions) ->
      Fun = fun ({FileName, Positions}) ->
  
negative.code: 				end, Positions)
  	  end,
      Msg = lists:flatmap(Fun, FileAndPositions),
      ?log_warning(Msg).
  
  output_renamed_atom_info(FileAndExprs) ->
      Fun = fun ({FileName, Exprs}) ->
  