[Pharo-project] about OutOfScopeNotification

Hi I was reading Issue 2436: Compiler outofScopeNotification http://code.google.com/p/pharo/issues/detail?id=2436 which I integrated in 12240 and I still do not get why in Squeak or pharo now | b c | b := [ :Object | Object ]. c := b value: Object. raises Unknown variable Object while | b c | b := [ :x | x ]. c := b value: Object. just returns Object Stef