Hi All, I have a beginner question. I have an ident that I #define this is a comma separated list of other ident, and I'd like to augment this list, i.e basically something like #define L a #define T L #undef L #define L T,b I have a growing list of ident (here a,b) I'd like to grow this as include files to end up with a,b,c,d at some point this is given to a va_args function like f(L) Indeed I know that the above #define/#undef will not make it, yet I tried a lot of combo with ## in macro like #define A(l,x) l##,##x #define l a #define t A(l,b) #undef l #define l t But nothing works. Thanx for any helps Cheers, Phi
