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Roberto wrote:


You can achive this by setting an __index metamethod for
nil, but you will have to set it through C.


Or with the debug library:

 Lua 5.1.1  Copyright (C) 1994-2006 Lua.org, PUC-Rio
 > debug.setmetatable(nil, {__index = function() return nil end})
 > print(thing.foo.bar.this.that)
 nil

--
Aaron
Beginning Lua Programming:
http://www.amazon.com/gp/product/0470069171/
http://search.barnesandnoble.com/booksearch/isbninquiry.asp?ISBN=0470069171