(:report
(lambda (condition stream)
(let ((error-stream (stream-error-stream condition)))
- (format stream "READER-ERROR ~@[at ~D ~]on ~S:~%~?"
+ (format stream "READER-ERROR ~@[at ~W ~]on ~S:~%~?"
(file-position error-stream) error-stream
(reader-error-format-control condition)
(reader-error-format-arguments condition))))))