- (dolist (stream streams (if (> (length res) 1) `(and ,@res) res))
- (pushnew (stream-element-type stream) res :test #'equal))))
- (:close)
+ (dolist (stream streams (if (> (length res) 1) `(and ,@res) t))
+ (pushnew (stream-element-type stream) res :test #'equal)))
+ ;; ANSI-specified version (under System Class BROADCAST-STREAM)
+ (let ((res t))
+ (do ((streams streams (cdr streams)))
+ ((null streams) res)
+ (when (null (cdr streams))
+ (setq res (stream-element-type (car streams)))))))
+ (:external-format
+ (let ((res :default))
+ (dolist (stream streams res)
+ (setq res (stream-external-format stream)))))
+ (:file-length
+ (let ((last (last streams)))
+ (if last
+ (file-length (car last))
+ 0)))
+ (:file-position
+ (if arg1
+ (let ((res (or (eql arg1 :start) (eql arg1 0))))
+ (dolist (stream streams res)
+ (setq res (file-position stream arg1))))
+ (let ((res 0))
+ (dolist (stream streams res)
+ (setq res (file-position stream))))))
+ (:file-string-length
+ (let ((res 1))
+ (dolist (stream streams res)
+ (setq res (file-string-length stream arg1)))))
+ (:close
+ (set-closed-flame stream))