On Fri, May 18, 2001 at 05:38:03PM +0200, Marco Mariani wrote: > On Fri, May 18, 2001 at 05:45:27PM +0200, Stefan Kirchberg wrote: > > > Now, how about > > [b,c][not a] > > -? > > Done for ages, works well. Also evaluates both b and c, which might not be whatYouWant(tm). toby.