Why not start with Hemlock or CLIMacs atop a CLIM implementation, or take the (MIT-licensed) ZWEI codebase and bring that forward? Is there really all that much in GNU emacs that is really widely used?
Starting with ZWEI, written in Lisp Machine Lisp in the late 70s, is a very cool way forward. Move back to the 70s and start from there. Good idea. Maybe not.
> Why not start with Hemlock or CLIMacs atop a CLIM implementation,
ZWEI (and ZMAIL) isn't Common Lisp, Kent Pitman worked on creating a set of diffs to it to make it compile in CL but I don't think they are freely available.
