(define-public (output-framework basename book scopes fields)
(let* ((filename (format "~a.svg" basename))
- (outputter (ly:make-paper-outputter filename
+ (outputter (ly:make-paper-outputter (open-file filename "wb")
(ly:output-backend)))
(dump (lambda (str) (display str (ly:outputter-port outputter))))
(paper (ly:paper-book-paper book))