diff --git a/lily/grob.cc b/lily/grob.cc
index c515c18..d03dacd 100644
--- a/lily/grob.cc
+++ b/lily/grob.cc
@@ -475,7 +475,7 @@ Grob::extent (Grob *refp, Axis a) const
   for (LEFT_and_RIGHT (d))
     if (!isinf (real_ext[d]))
       real_ext[d] += offset;
-
+message (_f ("@ %s %4.10f %4.10f\n", name ().c_str (), real_ext[LEFT], real_ext[RIGHT]));
   return real_ext;
 }