(maplist (lambda (sublist)
(let ((option-name (first (pop sublist))))
(when (member option-name sublist :key #'first)
- (error "Multiple ~S options in DEFCLASS ~S."
- option-name class-name))))
+ (error 'simple-program-error
+ :format-control "Multiple ~S options in DEFCLASS ~S."
+ :format-arguments (list option-name class-name)))))
options)
(let (metaclass
default-initargs
(:metaclass
(let ((maybe-metaclass (second option)))
(unless (and maybe-metaclass (legal-class-name-p maybe-metaclass))
- (error "~@<The value of the :metaclass option (~S) ~
+ (error 'simple-program-error
+ :format-control "~@<The value of the :metaclass option (~S) ~
is not a legal class name.~:@>"
- maybe-metaclass))
+ :format-arguments (list maybe-metaclass)))
(setf metaclass maybe-metaclass)))
(:default-initargs
(let (initargs arg-names)