libffi will have support for varargs in the future. How could the syntax in Guile be handled?
How about ellipsis symbol in pointer->procedure and a pair for each va-arg: type in car and value in car? > (define p (dynamic-func “printf” (dynamic-link))) > (define f (pointer->procedure int p (list ‘* ‘…))) > (f (string->pointer “n = %d\n”) `(int . 30)) n = 10