+(defvar *raw-command-line*)
+(defvar *command-line*)
+(defvar *program-name*)
+
+(defun set-command-line-arguments ()
+ (setf *raw-command-line*
+ (or #+cl-launch cl-launch:*arguments*
+ #+cmu ext:*command-line-strings*
+ #+sbcl sb-ext:*posix-argv*
+ #+ecl (loop from i below (ext:argc) collect (ext:argv i))
+ #+clisp (coerce (ext:argv) 'list)
+ '("<unknown-lisp>" "--" "<unknown-script>")))
+ (setf *command-line*
+ (or #+cl-launch (cons (or (cl-launch:getenv "CL_LAUNCH_FILE")
+ "<unknown-script>")
+ cl-launch:*arguments*)
+ (cdr (member "--" *raw-command-line* :test #'string=))
+ *raw-command-line*))
+ (setf *program-name* (pathname-name (car *command-line*))))
+(set-command-line-arguments)
+
+#-clisp
+(unless (fboundp 'exit)
+ (defun exit (&optional (code 0))
+ "Polite way to end a program."
+ #+(or cmu ecl) (ext:quit code)
+ #+sbcl (sb-ext:quit :unix-status code)
+ #-(or cmu ecl sbcl)
+ (progn
+ (unless (zerop code)
+ (format t "~&Exiting unsuccessfully with code ~D.~%" code))
+ (abort))))
+