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> There isn't a very good way to do what you're describing directly.
> One thing you can do is create mutable proxy functions and have the
> callers only see those.  If all the functions you describe are in a
> table you control, you can use a metatable on that table to make the
> indirection functions automatically.  

Thank you for your reply, it really is a good idea

But I am a bit curious about is why the changes ldc-> lp = valc-> lp will lead 
to memory disorders, as far as I know proto and the closure is separate from