grace-engraver.cc: improve programming error formatting.

diff --git a/lily/grace-engraver.cc b/lily/grace-engraver.cc
index c377166d63198ba5fbb905f3e5ba2a032df55616..19072ae7ad4358261cede36e5e67c73f2a307e4c 100644 (file)
--- a/lily/grace-engraver.cc
+++ b/lily/grace-engraver.cc
@@ -80,10 +80,8 @@ Grace_engraver::consider_change_grace_settings ()
                = scm_cons (scm_cons (c->self_scm (), entry), grace_settings_);
            }
          else
-           {
-             programming_error ("cannot find context: ");
-             scm_display (context_name, scm_current_error_port ());
-           }
+             programming_error ("cannot find context from graceSettings: "
+                                + ly_symbol2string (context_name));
        }
     }