I had a brief fling with Common Lisp a few years ago and I definitely miss Slime. I wish other language implementations would provide a networked repl and tight emacs integration. Neither of the Schemes I use (plt, gambit) work with Slime and Clojure's Slime integration had some annoying issues when I last checked about 6 months ago.
Scheme people often use Quack. It has excellent support for looking up documentation, as well as the usual stuff like interacting with the Scheme interpreter.
Yeah, I always suspected this. I never found any langauge other than Common Lisp to be very good with Slime. CL itself, however, tends to be excellent.
I am writing a similar integration layer for Perl, but decided not to reuse the Swank protocol. The Emacs side is just not quite flexible enough.
Slime allows you to code live on one machine while using another completely. Like Mac OS X controls better? fine, use a native Emacs and just tunnel to a remote Lisp session on NetBSD or Win32 :-)
Having the editor working locally might be a more responsive and "native" setup. I think this was intended more as a demo of possibilities though more than anything.
It looks like it could be a video from Xerox PARC in 1968. Well integrated and useful and current and old and clunky - what steampunk would look like if it was software.
(Why didn't he ' '.join(map(char-to-morse, string))? He had to download a string split library?)