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steve donovan wrote:
> That is the really interesting Tony's intended
> application, it really is necessary to have some guarantee that the
> hook will be called to restore the environment.

Are you thinking of the hook as a function that takes the environment as
its argument, or would it run 'in' the environment like the code in the
block? If the former:

   in {}, function (t) if t.f then t.f:close() end end do
      f = assert("script.lua"))

If the latter:

   in {}, function () if f then f:close() end end do
      f = assert("script.lua"))

I prefer the former because it allows you to write the hook outside the
block, and the hook could then be bound to the global environment and
use its services rather than being restricted to the block's environment.


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