Yeah, I mean there is some support for various editors (https://lispcookbook.github.io/cl-cookbook/editor-support.ht...) including VS Code (https://lispcookbook.github.io/cl-cookbook/vscode-alive.html), but it's kind of rough (https://blog.djhaskin.com/blog/experience-report-using-vs-co...) and not exactly feature-complete with the emacs experience, plus you're still left having to figure out how to install and setup a Lisp implementation and quicklisp. I like that mine solves those for a newcomer, especially on Windows. (I myself use vim + slimv, but even that isn't quite at parity in some respects with emacs. The biggest weaknesses are around debugging, especially in the presence of multiple threads. But the essentials do work (stepping, eval-in-frame, continuing-from-a-stack-frame, selecting the various types of restarts, compiling changes before selecting restarts) so I'm still fairly productive and don't feel like I'm lacking anything sorely needed for professional work. I've hacked together some automatic refactoring bits as well, which emacs doesn't have either, and I'm eventually going to make a separated GUI test runner.)

I've been kicking the tires with mine a little bit yesterday and today, I think it's quite good for the beginner experience. But I'm constantly of two minds about reporting some feature requests. The project's primary goal seems to be existing as a stepping stone to even see what Lisp (and especially Coalton) is really all about before "graduating" to something like emacs, it feels like a secondary goal (though it is mentioned as a goal) to be usable by professionals as well, but there's inherent tension there. That's also been a weakness with the other editors: anyone already comfortable with Lisp development, professional or not, in emacs or not, isn't very likely to give the time of day to some new thing that's almost certainly not going to be as good as what they're used to. And so the new thing doesn't get the attention and feedback from experienced developers and the gap never closes.