Interestingly, as of 2012, the UofT variant of ed referenced here was still in active use. There was at least one professor that required it (rather than the standard linux/solaris/whathaveyou ed) on machines she[1] used. It was carried along all these years, most recently being packaged as an rpm and made a standard part of every installation being done for systems I tended. I expect it's still around in other parts of UofT as well, but don't know for sure. The code itself lacked many modern trimmings and still didn't pull in various headers you'd expect in modern C programs because it had its own implementations of things like isspace, etc. I'd always known it as "Henry Spencer's ed" because that's the part of the UofT world I was working in. I didn't realize the full heritage of it until this video. Very cool! Thanks -Ben [1] Dr. Z was awesome, and I found it kinda nifty to keep this piece of heritage alive. On Sat, Nov 10, 2018 at 5:16 AM Pete Wright <pete(a)nomadlogic.org> wrote: -- --------------------------------------------------------------------------------------------------------------------------- Take the risk of thinking for yourself. Much more happiness, truth, beauty and wisdom will come to you that way. -Christopher Hitchens ---------------------------------------------------------------------------------------------------------------------------