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On 22 June 2010 02:58, David Manura <> wrote:

> One occurrence is when implementing a __tostring method of a tuple
> ADT, where the tuple is implemented as a table and can contain
> arbitrary values, including nils.  However, for strings I replace that
> tostring(t[i]) with string.format("%q",t[i]) since otherwise strings
> will be indistinguishable from non-strings in the tuple.  This doesn't
> fit into proposal for table.concat supporting __tostring though.

I guess there's a case for stopping at the first nil and/or treating
nils as "" for concatenation purposes.