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On Wed,  6 Aug 2003 12:00:11 -0300 (BRT)
lua-request@bazar2.conectiva.com.br wrote:

> Gang,
> Is there a way in Lua to lock a global variable after initializing it so
> that trying to reassign it will fail?
> 
> We'd like to prevent inadvertent reassignment of key global variables by
> some unaware scriptor...

You change the setglobal tag to a function that throws an error(in lua4, in lua5 it must be a field of the metatable but the idea stays)