Somewhere around line 188 of slime.el: ---------------------------------------- Example: Assuming you run emacs locally and connect to slime running on the machine 'soren' and you can connect with the username 'animaliter': (push (list \"^soren$\" (lambda (emacs-filename) (subseq (length \"/ssh:animaliter@soren:\") emacs-filename)) (lambda (lisp-filename) (concat \"/ssh:animaliter@soren:\" lisp-filename))) slime-filename-translations) ---------------------------------------------------- In the example, the arguments to subseq are backwards.