You surely don't want to do that. That looks like a very bad idea.

If you're still there, you can change the SCALAR portion of all GLOBs in the symbol table of your current package which start with a v. That's easy, you just have to look inside a hash. This will reset all variables starting with a v that are not lexically scoped, ie: for which you don't have a my.

For the lexicals, there is the module PadWalker, peek_my(0) will give you a list of visible lexical variables in a hashref. How wonderful :).

Good luck with that crazy idea.