P-p-H-d

#define M_DEFERRED_COMMA            ,

#define M_EAT(...)
#define M_APPLY(a, ...)             a (__VA_ARGS__)
#define M_ID(...)                 __VA_ARGS__

#define M_C2I(a, ...)       a ## __VA_ARGS__
#define M_C(a, ...)         M_C2I(a, __VA_ARGS__)
#define M_C3I(a, b, ...)    a ## b ## __VA_ARGS__
#define M_C3(a, b, ...)     M_C3I(a ,b, __VA_ARGS__)