From 67370eabfb36cd70d9fbf6bcff53a1ac3b5b18c3 Mon Sep 17 00:00:00 2001
From: David Kastrup <dak@gnu.org>
Date: Sat, 16 Nov 2013 18:25:03 +0100
Subject: [PATCH] Issue 3666: Format error message for argument errors more
 nicely

Actually, using display-lily-music here would be nicer, but it does not
cater for anything but music automatically like music->make-music
does.
---
 scm/ly-syntax-constructors.scm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scm/ly-syntax-constructors.scm b/scm/ly-syntax-constructors.scm
index b3d7f3f0f0..5fe0bfbbef 100644
--- a/scm/ly-syntax-constructors.scm
+++ b/scm/ly-syntax-constructors.scm
@@ -73,7 +73,7 @@
    parser
    (format #f
            (_ "wrong type for argument ~a.  Expecting ~a, found ~s")
-           n (type-name pred) arg)
+           n (type-name pred) (music->make-music arg))
    location))
 
 (define-ly-syntax-simple (void-music)
-- 
2.39.2