- (when (and pos
- (< pos sb!xc:array-dimension-limit)
- ;; KLUDGE: lseek() (which is what FILE-POSITION
- ;; reduces to on file-streams) is undefined on
- ;; "some devices", which in practice means that it
- ;; can claim to succeed on /dev/stdin on Darwin
- ;; and Solaris. This is obviously bad news,
- ;; because the READ-SEQUENCE below will then
- ;; block, not complete, and the report will never
- ;; be printed. As a workaround, we exclude
- ;; interactive streams from this attempt to report
- ;; positions. -- CSR, 2003-08-21
- (not (interactive-stream-p error-stream))
- (file-position error-stream :start))
- (let ((string
- (make-string pos
- :element-type (stream-element-type
- error-stream))))
- (when (= pos (read-sequence string error-stream))
- (setq lineno (1+ (count #\Newline string))
- colno (- pos
- (or (position #\Newline string :from-end t) -1)
- 1))))
- (file-position-or-nil-for-error error-stream pos))
- (format stream
- "READER-ERROR ~@[at ~W ~]~
- ~@[(line ~W~]~@[, column ~W) ~]~
- on ~S:~%~?"
- pos lineno colno error-stream
- (reader-error-format-control condition)
- (reader-error-format-arguments condition)))))))
+ (when (and pos
+ (< pos sb!xc:array-dimension-limit)
+ ;; KLUDGE: lseek() (which is what FILE-POSITION
+ ;; reduces to on file-streams) is undefined on
+ ;; "some devices", which in practice means that it
+ ;; can claim to succeed on /dev/stdin on Darwin
+ ;; and Solaris. This is obviously bad news,
+ ;; because the READ-SEQUENCE below will then
+ ;; block, not complete, and the report will never
+ ;; be printed. As a workaround, we exclude
+ ;; interactive streams from this attempt to report
+ ;; positions. -- CSR, 2003-08-21
+ (not (interactive-stream-p error-stream))
+ (file-position error-stream :start))
+ (let ((string
+ (make-string pos
+ :element-type (stream-element-type
+ error-stream))))
+ (when (= pos (read-sequence string error-stream))
+ (setq lineno (1+ (count #\Newline string))
+ colno (- pos
+ (or (position #\Newline string :from-end t) -1)
+ 1))))
+ (file-position-or-nil-for-error error-stream pos))
+ (pprint-logical-block (stream nil)
+ (format stream
+ "READER-ERROR ~@[at ~W ~]~
+ ~@[(line ~W~]~@[, column ~W) ~]~
+ on ~S:~2I~_~?"
+ pos lineno colno error-stream
+ (reader-error-format-control condition)
+ (reader-error-format-arguments condition))))))))