Variable arguments in macros

[Karl Heuer]

In article <58345 at yale-celray.yale.UUCP> leichter at CS.YALE.EDU (Jerry Leichter (LEICHTER-JERRY at CS.YALE.EDU)) writes:
>[allow an ellipsis in the macro parameters, and have a builtin macro _REST_
>which] expands to the list of remaining arguments, including a leading comma
>if there is at least one such argument.

Not good enough.  Consider:
	#define f(a,b,...) (g(a,b),h(_REST_))
in which, for syntactic correctness, _REST_ must exclude the leading comma.
I suspect this was the major reason that variadic macros didn't make it into
the Standard: there was no clean proposal that handled the case with zero
additional args.

Karl W. Z. Heuer (ima!haddock!karl or karl at haddock.isc.com), The Walking Lint