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> Is this right? Is this the only way? Will it work just the same?

Yes, yes(?), yes. The following construction in Lua4.0

  function foo (...)
    ... %x ...

is exactly equivalent to the next one in Lua5.0 (as long as _x_ is a new

  local _x_ = x
  function foo (...)
    ... _x_ ...

> (BTW, a question to Roberto: how high is the finishing of THE BOOK in
> your priority list? ;-)

In my priority list it is very high. But it does not seem to be very
high in publishers' lists ;)

-- Roberto