On 01/25/2013 06:22 AM, Don wrote: >> IIRC, the !is operator is thanks to bearophile. > > No, it's from 2002 (well, it was !==, renamed to !is in 2005). > Bearophile only joined us about the time D2 began, in late 2007. Ok. How about !in then? Did he lobby for that one? :) Ali