From 5111c76457bd1f707ff14b424988c0203cb5964b Mon Sep 17 00:00:00 2001
From: David Kastrup <dak@gnu.org>
Date: Tue, 2 Sep 2014 19:19:23 +0200
Subject: [PATCH] Make "Don't know how to parenthesize spanners." warning, not
 programming error

Also add location information.
---
 lily/parenthesis-engraver.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lily/parenthesis-engraver.cc b/lily/parenthesis-engraver.cc
index d021be9be4..abd1d07cc4 100644
--- a/lily/parenthesis-engraver.cc
+++ b/lily/parenthesis-engraver.cc
@@ -67,7 +67,7 @@ Parenthesis_engraver::acknowledge_grob (Grob_info info)
             }
           else
             {
-              programming_error ("Don't know how to parenthesize spanners.");
+              info.grob ()->warning ("Don't know how to parenthesize spanners.");
             }
         }
     }
-- 
2.39.2