anchor.diff:                              [FileNameAst,
                                erl_syntax:abstract({pos, Pos}),
                                erl_syntax:tuple([erl_syntax:atom(record_info),
  -                                               erl_syntax:variable("_RecordInfo")])
  +                                               erl_syntax:variable("_RecordInfo")]),
  +                             erl_syntax:tuple([erl_syntax:atom(render_options),
  +                                               erl_syntax:variable("RenderOptions")])
                               ])
                            ]);
                      Val ->
  
positive.code: regroup_filter({variable,{identifier,_,Var}},Acc) ->
      erl_syntax:list([erl_syntax:atom(Var)|Acc]).
  
  
  for_loop_ast(IteratorList, LoopValue, IsReversed, Contents, {EmptyContentsAst, EmptyContentsInfo}, Context, TreeWalker) ->
      Vars = lists:map(fun({identifier, _, Iterator}) ->
                               erl_syntax:variable(lists:concat(["Var_", Iterator]))
                       end, IteratorList),
      {{InnerAst, Info}, TreeWalker1} = body_ast(Contents,
                                                 Context#dtl_context{local_scopes = [
                                                                                     [{'forloop', erl_syntax:variable("Counters")} | lists:map(
                                                                                                                                       fun({identifier, _, Iterator}) ->
                                                                                                                                               {Iterator, erl_syntax:variable(lists:concat(["Var_", Iterator]))}
                                                                                                                                       end, IteratorList)] | Context#dtl_context.local_scopes]}, TreeWalker),
      CounterAst = erl_syntax:application(erl_syntax:atom(erlydtl_runtime),
                                          erl_syntax:atom(increment_counter_stats), [erl_syntax:variable("Counters")]),
  
      {{LoopValueAst, LoopValueInfo}, TreeWalker2} = value_ast(LoopValue, false, true, Context, TreeWalker1),
  
      LoopValueAst0 = erl_syntax:application(erl_syntax:atom(erlydtl_runtime), erl_syntax:atom(to_list), [LoopValueAst, erl_syntax:atom(IsReversed)]),
  
      CounterVars0 = case resolve_scoped_variable_ast('forloop', Context) of
                         undefined ->
  
negative.code:            [FileNameAst,
              erl_syntax:abstract({pos, Pos}),
              erl_syntax:tuple([erl_syntax:atom(record_info),
                                erl_syntax:variable("_RecordInfo")]),
              erl_syntax:tuple([erl_syntax:atom(render_options),
                                erl_syntax:variable("RenderOptions")])
             ])
          ]),
        VarInfo},
  