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On 6/28/08, Petite Abeille <> wrote:
>  On Jun 29, 2008, at 12:54 AM, Leo Razoumov wrote:
> > The last example also has 2 holes (t[2],t[4]) but it works.
>  ipairs "will iterate over the pairs (1,t[1]), (2,t[2]), ···, up to the
> first integer key absent from the table."

My problem is with "table.concat" and _not_ with ipairs.
Reading carefully your reply I still cannot figure it out while one
hole breaks table.concat but two holes work fine.

Finally, nil values are not stored in a table. According to the
reference manual assigning t[k]=nil clears the t[k] value.

>  "Don't claim that you have found a bug"
>  -- Eric Steven Raymond, "How To Ask Questions The Smart Way", 2001

It is either a bug in Lua implementation or a bug in Lua documentation.