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> -----Message d'origine-----
> De : [] De
> la part de Niccolo Medici
> Envoyé : dimanche 25 janvier 2015 21:17
> À : Lua mailing list
> Objet : Re: What's the purpose of these parentheses in the #define's?
> Why's the need for these seemingly spurious parentheses in Lua's macros?

It is useless here, but it is a customary precaution that harms neither
readability (on the contrary) nor the quality of the generated code.