Forming composite tokens using /**/

[edhall at randvax.UUCP]

+
Another alternative (which is probably equally offensive):
   |
   |#define cat(a,b) a\
   |b
   |
At least this doesn't rely on the preprocessor stripping comments.
But it is still likely to be non-portable.

		-Ed Hall
		decvax!randvax!edhall