X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fc%2B%2B.scm;h=fd965ac4d59d394bf5cd34e341689ad74b82ea45;hb=6d2278abbc50342fc699fdb17d1c44ebb3adcaaa;hp=a131e7f3428d95870bcc3ec05b1643fe7d899552;hpb=a82d8622e6b1be36169de7d2fe1f9aa88618933b;p=lilypond.git

diff --git a/scm/c++.scm b/scm/c++.scm
index a131e7f342..fd965ac4d5 100644
--- a/scm/c++.scm
+++ b/scm/c++.scm
@@ -1,6 +1,6 @@
 ;;;; This file is part of LilyPond, the GNU music typesetter.
 ;;;;
-;;;; Copyright (C) 1998--2012 Jan Nieuwenhuizen <janneke@gnu.org>
+;;;; Copyright (C) 1998--2014 Jan Nieuwenhuizen <janneke@gnu.org>
 ;;;;                 Han-Wen Nienhuys <hanwen@xs4all.nl>
 ;;;;
 ;;;; LilyPond is free software: you can redistribute it and/or modify
@@ -33,6 +33,11 @@
   (and (pair? x)
        (index? (car x)) (index? (cdr x))))
 
+(define-public (rational-or-procedure? x)
+  (or
+   (and (rational? x) (exact? x))
+   (procedure? x)))
+
 (define-public (number-or-grob? x)
   (or (ly:grob? x) (number? x)))