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On Mon, Nov 22, 2010 at 4:55 PM, Dirk Laurie <dpl@sun.ac.za> wrote:
> I would like to say line:scan but assigning to getmetatable("").scan
> causes no error but line:scan is still nil.

I think that should be getmetatable("").__index.scan.  In any case,
assigning to string.scan works well.