If you want to start with a fresh slate, it's easy. Assuming you haven't changed the current directory or clobbered @ARGV, 

exec $^X, $0, @ARGV

[download]

Note: That won't pass to the new interpreter options that were passed to the first (like -p), but I bet that's not an issue for you.

Update: Added note.

In reply to Re^3: Build a list of defined var's by ikegami
in thread Build a list of defined var's by Karger78

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