Background: I'm just starting out with SLIME, and it's been just a little bit rough because of my environment, but more promising than ILisp. The complications are: I'm running on WinXP, I've generally used a native version of XEmacs (21.4.13 as of today), I use some Cygwin tools, and since I'm just getting reacquainted with Lisp, I've been trying out various implementations.

I tried out Cygwin XEmacs over the last week, but found it less stable overall than the native version, so I've reverted. I did get SLIME going with Cygwin XEmacs and Cygwin CLisp (latest version), no problem. When I switched back to native XEmacs, I had problems with SLIME initialization. XEmacs is sending native file namestrings to CLisp, and the latter chokes on the backslashes.

After only a little searching, I found slime-translate-to-lisp-filename-function, and now I define it as follows during XEmacs initialization:

(defvar slime-translate-to-lisp-filename-function (function (lambda (s) (replace-in-string s "\\" "/"))))

However, I have found and fixed two places in slime.el that weren't calling this function. These two changes allow me to get to REPL. The functions that I changed are slime-maybe-start-lisp and slime-start-swank-server. Here's output from cvs diff:

diff -r1.228 slime.el 968c968 < (concat slime-path slime-backend))) ---

                            (slime-to-lisp-filename (concat 

slime-path sli me-backend)))) 980c980 < (slime-swank-port-file)))) ---

                          (slime-to-lisp-filename 

(slime-swank-port-file)) )))

(If there's a better format I can use for showing changes, please tell me how to get it.)

Nice code, by the way, it only took a little guesswork to find the hook for translating file names. Very different from my ILisp experience.