anchor.diff:  %% 
   -module(refac_expr_search).
   
  --export([expr_search/4, var_binding_structure/1]).
  +-export([expr_search/4, expr_search_eclipse/4, var_binding_structure/1]).
   
   -include("../include/wrangler.hrl").
   %% ================================================================================================
  
positive.code: 		     {ok, Res}
  	    end;
  	_   -> {error, "You have not selected an expression!"}
      end.	    
  	  
  
  %% Search the clones of an expression from Tree.
  search_one_expr(Tree, Exp) ->
  
negative.code:       
  
  %% get the binding structure of variables.
  %%-spec(var_binding_structure/1::([syntaxTree()]) -> [{integer(), integer()}]).      
  var_binding_structure(ASTList) ->
      Fun1 = fun (T, S) ->
  		   case refac_syntax:type(T) of
  