anchor.diff:  %% search the clones of an expresion sequence from Tree.			
   search_expr_seq(Tree, ExpList) ->
       AllExpList = contained_exprs(Tree, length(ExpList)),
  +   %% ExpList1 = lists:map(fun(T) ->simplify_expr(T) end, ExpList),
       Res =lists:concat(lists:map(fun(EL) ->
   				   get_clone(ExpList, EL) end, AllExpList)),
       Res.
  
positive.code: 		true ->
  		    List22 = lists:sublist(List2, Len1),
  		    BdList1 = var_binding_structure(List1),
  		    BdList22 = var_binding_structure(List22),
  		    case BdList1 == BdList22 of 
  			true -> E1 = hd(List22),
  				En = lists:last(List22),
  			        {{StartLn, StartCol}, _EndLoc} = refac_util:get_range(E1),
  
negative.code: 		char ->
  		    refac_syntax:default_literals_vars(Node, '%');
  		string ->
  		    refac_syntax:default_literals_vars(Node, '%');
  		atom -> case lists:keysearch(fun_def,1,refac_syntax:get_ann(Node)) of 
  			    false ->refac_syntax:default_literals_vars(Node, '%') ;
  			    _ -> refac_syntax:default_literals_vars(Node, refac_syntax:atom_value(Node))
  			end;
  		nil -> refac_syntax:default_literals_vars(Node, nil);
  		underscore ->refac_syntax:default_literals_vars(Node, '&');
  