Hugo <hv@crypt.compulink.co.uk> wrote > Could we not simply grep *.[ch] for the names? It'd be a bit slow, I > guess, so a DWIS flag might be useful to suppress it. That's a *much* better idea than mine. And we already have a DWIS flag: POLLUTE=1 or POLLUTE=0. I doubt that the speed is a big issue in practice. And if it is, we could follow Tim's idea of just scanning for sv_yes, sv_no, sv_undef and na, which would cover the vast majority of cases. Mike Guy