;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
-;;;; (c) 1998--2007 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;; (c) 1998--2009 Jan Nieuwenhuizen <janneke@gnu.org>
;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
;;; Note: this file can't be used without LilyPond executable
(define-public (number-or-string? x)
(or (number? x) (string? x)))
+(define-public (string-or-pair? x)
+ (or (string? x) (pair? x)))
+
(define-public (scheme? x) #t)