X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fpart-combiner.scm;h=81beaf6ae7d83c6dab583c1297dcd061fe775f3c;hb=ba8c5a22f1ffefcf89dd4c40aa2ce82493f95572;hp=81c6e3685075ffcd7fce1be946ebcf7da1ee5830;hpb=d4ba37c298813e0f7008ef8388e126c34d8f8dd3;p=lilypond.git

diff --git a/scm/part-combiner.scm b/scm/part-combiner.scm
index 81c6e36850..81beaf6ae7 100644
--- a/scm/part-combiner.scm
+++ b/scm/part-combiner.scm
@@ -2,7 +2,7 @@
 ;;;;
 ;;;;  source file of the GNU LilyPond music typesetter
 ;;;; 
-;;;; (c) 2004--2007	Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;; (c) 2004--2009	Han-Wen Nienhuys <hanwen@xs4all.nl>
 
 ;; todo: figure out how to make module,
 ;; without breaking nested ly scopes
@@ -230,8 +230,10 @@ Voice-state objects
     
     (set! (ly:music-property m 'elements) (list m1 m2))
     (set! (ly:music-property m 'split-list)
-	  (determine-split-list (reverse! (cdr (assoc "one" evs1)) '())
-				(reverse! (cdr (assoc "two" evs2)) '())))
+      (if (and (assoc "one" evs1) (assoc "two" evs2))
+  	  (determine-split-list (reverse! (cdr (assoc "one" evs1)) '())
+	  			(reverse! (cdr (assoc "two" evs2)) '()))
+	  '() ))
     m))
 
 (define-public (determine-split-list evl1 evl2)