I see my previous reply was unclear >It looks like what you are building is an >extension to ASDF
not an extension but a patch >that hooks it into an editor yes >(perhaps specifically the >lispworks IDE?). No. I use lispworks IDE for Lispworks and EMACS (via SWANK callback) for SBCL. EMACS/SWANK should work with all lisps supported by SLIME.
