in reply to Exported subroutine redefine

Short of reaching into the package that imported the subroutine, I'm not seeing a way.

You could crawl all over the symbol table finding any references to the old Foo::foo and update them. You're already doing something horribly icky, what's a bit more eh?

Edit: Hah, I meant module::function, sorry. Foo::foo was the name of the function I was using to test things.