+ (with-sane-io-syntax
+ (warn 'simple-style-warning
+ :format-control format-control
+ :format-arguments format-arguments)))
+
+;;; a utility for SIGNAL, ERROR, CERROR, WARN, COMPILER-NOTIFY and
+;;; INVOKE-DEBUGGER: Parse the hairy argument conventions into a
+;;; single argument that's directly usable by all the other routines.
+(defun coerce-to-condition (datum arguments default-type fun-name)
+ (cond ((typep datum 'condition)
+ (when (and arguments (not (eq fun-name 'cerror)))
+ (cerror "Ignore the additional arguments."
+ 'simple-type-error
+ :datum arguments
+ :expected-type 'null
+ :format-control "You may not supply additional arguments ~
+ when giving ~S to ~S."
+ :format-arguments (list datum fun-name)))
+ datum)
+ ((symbolp datum) ; roughly, (SUBTYPEP DATUM 'CONDITION)
+ (apply #'make-condition datum arguments))
+ ((or (stringp datum) (functionp datum))
+ (make-condition default-type
+ :format-control datum
+ :format-arguments arguments))
+ (t
+ (error 'simple-type-error
+ :datum datum
+ :expected-type '(or symbol string)
+ :format-control "bad argument to ~S: ~S"
+ :format-arguments (list fun-name datum)))))