I was going to answer this but it didn't answer the question. Perhaps some hacking about with PadWalker? Braver souls could implement a CHECK time function to walk all over the generated code and look for duplicated lexical names.

Added I mean to say that while I don't know of any already implemented code, nothing that I'm aware of prevents someone (else) from creating it.

In reply to Re: Prohibiting redeclaration of lexicals in inner scope by diotalevi
in thread Prohibiting redeclaration of lexicals in inner scope by JohnLon

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