Re: Concerns regarding in env do code() end

[David Given <dg@...>]

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On 14/01/10 23:32, Alexander Gladysh wrote:
[...]
> It is really hard to code serious stuff in Lua without some kind of
> global environment protection (like etc/strict.lua). Such protection
> would have caught this error. If you do not use one, you should know
> what you're doing.

Actually, what I'd really like is a syntactic construction indicating
that a particular lexical scope has *no* environment and any use of
globals is therefore an error and should error out at compile time.

local a = 1
in nil do
  a = 2 -- works
  b = 3 -- fails at compile time!
end

I suspect this is sufficiently Different From The Lua Way not to be
considered applicable for the mainstream language, though (and besides,
the syntax is very ugly). But I'd still like it...

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