anchor.diff:                                 _W_NewCond=fun(_W_Bind_) -> 
                                                     api_refac:make_cond(Cond, _W_Bind_)
                                             end,
  -                               Res=api_refac:match(Before, _W_Node_, _W_NewCond),
                                  case api_refac:match(Before, _W_Node_, _W_NewCond) of
                                      {true, _W_Bind1_, _} ->
                                          _This@=_W_Node_,
  
positive.code:                                    {true, _W_Bind1_, CsOrder} ->
                                         _This@=_W_Node_,
                                         _File@=_W_File_,
                                         _W_After_SubTrees_=lists:append(wrangler_syntax:subtrees(After)),
                                         [_W_Arg_|_W_Cs]=[begin
                                                              api_refac:generate_bindings_1(Before,'_W_SubBind_'),
                                                              Binds= api_refac:generate_subst(After),
                                                              api_refac:subst(lists:nth(_W_CsOrder_+1, _W_After_SubTrees_), Binds)
                                                          end 
                                                          ||{_W_SubBind_, _W_CsOrder_}<-lists:zip(_W_Bind1_, CsOrder)],
                                         _W_After=api_refac:simplify_expr(wrangler_syntax:case_expr(_W_Arg_, _W_Cs),
                                                                          _W_Node_),
                                         {wrangler_misc:reset_pos_and_range(_W_After), true};
                                     false ->{_W_Node_, false}
                                 end 
  
negative.code:                                                         _File@=_W_File_,
                                                          api_refac:make_cond(Cond, _W_Bind_)
                                                  end,
                                      case  api_refac:match(Temp, _W_Node_, _W_NewCond_) of
                                          {true, _W_Bind1_, _} ->
                                              _This@=_W_Node_, 
                                              _File@=_W_File_,
                                              api_refac:generate_bindings(Temp, '_W_Bind1_'),
  