but without that, the expected behaviour

:) First you learn the rules, then you can have expectations realistic expectations

If you're expecting a different behaviour, you're expecting according to another set of rules, not perl's set of rules :)

Tutorials: Variable Scoping in Perl: the basics, Coping with Scoping , Mini-Tutorial: Perl's Memory Management, Lexical scoping like a fox, Read this if you want to cut your development time in half!, Closure on Closures