Doc-es: update Usage/LilyPond Book.

[lilypond.git] / lily / engraver.cc

diff --git a/lily/engraver.cc b/lily/engraver.cc
index 23d7fd9fc2701b0f795d024b70326d44c164dc21..7891a1b9eb8fe17f44409f314ef6be32fe4d229c 100644 (file)
--- a/lily/engraver.cc
+++ b/lily/engraver.cc
@@ -137,9 +137,9 @@ Engraver::internal_make_grob (SCM symbol,
 
 #ifdef DEBUG
   if (ly_is_procedure (creation_callback))
-    scm_apply_0 (creation_callback,
-                 scm_list_n (grob->self_scm (), scm_from_utf8_string (file),
-                             scm_from_int (line), scm_from_ascii_string (fun), SCM_UNDEFINED));
+    scm_call_4 (creation_callback,
+                grob->self_scm (), scm_from_utf8_string (file),
+                scm_from_int (line), scm_from_ascii_string (fun));
 #endif
 
   return grob;