Since its been there a while and nobody has fixed it. There is a error in nregex.lisp.
Index: nregex.lisp =================================================================== RCS file: /project/slime/cvsroot/slime/nregex.lisp,v retrieving revision 1.1 diff -c -r1.1 nregex.lisp *** nregex.lisp 21 Apr 2004 18:55:24 -0000 1.1 --- nregex.lisp 26 Apr 2004 12:15:06 -0000 *************** *** 256,262 **** ;; ;; If this is the last character of the expression then ;; anchor the end of the expression, otherwise let it slide ! u ;; as a standard character (even though it should be quoted). ;; (if (= eindex (1- (length source))) (add-exp '((if (not (= index length)) --- 256,262 ---- ;; ;; If this is the last character of the expression then ;; anchor the end of the expression, otherwise let it slide ! ;; as a standard character (even though it should be quoted). ;; (if (= eindex (1- (length source))) (add-exp '((if (not (= index length))