anchor.diff:  
   renamed_warn_msg(FunName) ->
       "\n=================================================================================\n"
  -	"WARNING: Wrangler has renamed the uses of "++atom_to_list(FunName)++
  -	" within the following expressions while without enough "
  +	"WARNING: Wrangler has renamed the uses of '"++atom_to_list(FunName)++
  +	"' within the following expressions while without enough "
   	"syntactic/semantic information. Please check manually!\n".
        
   
   not_renamed_warn_msg(FunName) ->
       "\n=================================================================================\n"
  -	"WARNING: Wrangler could not infer whether the uses of " ++ atom_to_list(FunName)++ 
  -	" at the following positions refer to the function renamed, and they are not renamed."
  +	"WARNING: Wrangler could not infer whether the uses of '" ++ atom_to_list(FunName)++ 
  +	"' at the following positions refer to the function renamed, and they are not renamed."
   	" Please check manually!\n".
   
   
  
positive.code: 		  _ -> []
  		end
  	end,
      R = lists:flatten(lists:map(F, refac_syntax:form_list_elements(Tree))),
      R1 = [X ||{atom, X, _} <- R],
      R2 = [X ||{_, X, _} <- lists:filter(fun (X) ->
  					     case X of
  
negative.code: 		end;
  	    _ -> {Tree, false}
  	  end;
  	arity_qualifier ->   %% is there a module name?
  	    do_rename_fun_in_arity_qualifier(Tree, M, OldName, Arity, NewName);
  	tuple -> 
  	    do_rename_fun_in_tuples(Tree, {FileName, SearchPaths, M, OldName, NewName, Arity, Pid, TabWidth});
  	_ -> {Tree, false}
      end.
  
  do_rename_fun_in_arity_qualifier(Tree, M, OldName, Arity, NewName) ->
  