On 2/20/2016 2:32 PM, Alain wrote:

>
> Excuse me, but changing an union to an intersection or difference?
> There is no way that can give the same result, ever. It will also render
> MUCH slower.
>
> My guess is that one of those macros produce an union that may be
> missing it's closing brace.

No, the point is not to render it, it's just to parse it to figure which 
of the 3 nested unions is missing the }.  If one changes a union to a 
difference, maybe it says "missing } in difference" and buys one a clue 
to where the problem is.

dik

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