anchor.diff:      Expected = {2, {3, "something", pong}, {2, 3, pang}},
       ?_assertEqual(Expected, Result).
   
  -%%-endif.
  +-endif.
  
positive.code:     Fun = make_fun(FunName, 1, [ClauseS, ClauseF], LineNo2),
      {[Fun], LineNo2, Maps, FunNo + 1}.
  
  make_fun(FunName, Arity, Clause, LineNo) ->
      {function, LineNo, FunName, Arity, Clause}.
  
  
negative.code: 	_         -> filter_ast(T, [H | Acc])
      end.
  
  -spec build_extract_fn([[#riak_field{}]], pos_integer(), ast()) ->
  			      {expr(), pos_integer()}.
  build_extract_fn([], LineNo, Acc) ->
      Clauses = lists:flatten(lists:reverse(Acc)),
  