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> Noticed that OP_CONCAT and LoadString in undump.c uses memcpy() twice if
> the resulting string is not already interned. Since the result length is
> known early the long string case can be quite easily optimized to copy data
> just once. Seems to slash 25+25 concat time by around 12%, probably more
> for longer strings. I see no reproducible regression in the short strings
> case.

That is a nice idea. We will try it. Many thanks,

-- Roberto