Re: How do you return multiple values?

[Florian Weimer <fw@...>]

* Geoff Leyland:

> function a()
>   -- could cause an error, could return different numbers of values
>   return 1, nil, 2
> end
>
> function b()
>   local status, r = pcall(function() return { a() } end)
>   if not r then error("nicely handled error!") end
>   return unpack(r)
> end

I guess you should use a helper function and a tail call, like this:

function a()
  -- could cause an error, could return different numbers of values
  return 1, nil, 2
end

do
   local function b1(status, r, ...)
      if not r then error("nicely handled error!") end -- ??? status?
      return r, ...
   end
   
   function b()
      return b1(pcall(a))
   end
end