(if (ly:grob? system-grob)
(begin
- (display (format "# Output signature\n# Generated by LilyPond ~a\n" (lilypond-version))
- output)
+ (display (format
+ "# Output signature\n# Generated by LilyPond ~a on ~a\n"
+ (lilypond-version)
+ (strftime "%c" (localtime (current-time)))
+ ) output)
(interpret-for-signature found-grob (lambda (x) #f)
(ly:stencil-expr
(paper-system-stencil paper-system))))))