;; stream, possibly with a space prepended. However, this doesn't
;; work for pretty streams which need to do margin calculations. Oh
;; well. It was good while it lasted. -- CSR, 2003-12-15
- (let ((output (with-output-to-string (s)
- (write (cadr form) :stream s))))
- (unless (= (length output) 0)
- (when (and (eql (car form) 'backq-comma)
+ ;;
+ ;; This is an evil hack. If we print to a string and then print again,
+ ;; the circularity detection logic behaves as though it's already
+ ;; printed that data... and it has, to a string stream that we send
+ ;; to the bitbucket in the sky. -- PK, 2013-03-30
+ (when (eql (car form) 'backq-comma)
+ (let ((output (with-output-to-string (s)
+ ;; Patching evil with more evil. The next step is
+ ;; likely to stop the madness and unconditionally
+ ;; insert a space.
+ (let (*circularity-hash-table*
+ *circularity-counter*)
+ (write (cadr form) :stream s)))))
+ (when (and (plusp (length output))
(or (char= (char output 0) #\.)
(char= (char output 0) #\@)))
- (write-char #\Space stream))
- (write (cadr form) :stream stream))))
+ (write-char #\Space stream))))
+ (write (cadr form) :stream stream))
;;; This is called by !PPRINT-COLD-INIT, fairly late, because
;;; SET-PPRINT-DISPATCH doesn't work until the compiler works.