McCLIM has included DREI (drei replaces eine's inheritor) which is a bunch of editor-oriented stuff analogous to the CADR's ZWEI (zwei wasn't eine?) and EINE (???). The editor has powerful do-what-I-mean ish autocomplete. You start in an interactor pane powered by drei by default. McCLIM facts! Go ask daniel about it ;p.
It didn't seem like a lag thing (why would clicking the cursor to the start of the line appear to fix it instantly)