\f
;;;; file position and file length
(defun external-format-char-size (external-format)
- (let ((ef-entry (find-external-format external-format)))
+ (let ((ef-entry (get-external-format external-format)))
(if (variable-width-external-format-p ef-entry)
(bytes-for-char-fun ef-entry)
(funcall (bytes-for-char-fun ef-entry) #\x))))