+ (let* ((c (char str i))
+ (match (assoc c repl-alist :test #'char=)))
+ (declare (character c))
+ (when match
+ (incf new-len (1- (length (cdr match)))))))
+ new-len))
+
+(defun string-replace-chars-strings (str repl-alist)
+ "Replace all instances of a chars with a string. repl-alist is an assoc
+list of characters and replacement strings."
+ (declare (simple-string str))
+ (do* ((orig-len (length str))
+ (new-string (make-string (replaced-string-length str repl-alist)))
+ (spos 0 (1+ spos))
+ (dpos 0))
+ ((>= spos orig-len)
+ new-string)
+ (declare (fixnum spos dpos) (simple-string new-string))
+ (let* ((c (char str spos))
+ (match (assoc c repl-alist :test #'char=)))
+ (declare (character c))
+ (if match
+ (let* ((subst (cdr match))
+ (len (length subst)))
+ (declare (fixnum len))
+ (dotimes (j len)
+ (declare (fixnum j))
+ (setf (char new-string dpos) (char subst j))
+ (incf dpos)))
+ (progn
+ (setf (char new-string dpos) c)
+ (incf dpos))))))