(define (number-pair? x)
(and (pair? x)
(number? (car x)) (number? (cdr x))))
-
+(define (number-or-grob? x)
+ (or (ly-grob? x) (number? x))
+ )
+
(define (moment-pair? x)
(and (pair? x)
(moment? (car x)) (moment? (cdr x))))
(,number-or-string? . "number or string")
(,number-or-boolean? . "number or boolean")
(,markup? . "markup (list or string)")
+ (,number-or-grob? . "number or grob")
))