Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

[lilypond.git] / lily / accidental-engraver.cc

diff --git a/lily/accidental-engraver.cc b/lily/accidental-engraver.cc
index 95ebf7caa97e8e72bbb0e1543a055411ea4a5ef9..003b37ff318f56f11638bb099ffbfffe76efb7fc 100644 (file)
--- a/lily/accidental-engraver.cc
+++ b/lily/accidental-engraver.cc
@@ -103,7 +103,8 @@ public:
   in grobs should always store ly_deep_copy ()s of those.
 */
 
-Accidental_engraver::Accidental_engraver ()
+Accidental_engraver::Accidental_engraver (Context *c)
+  : Engraver (c)
 {
   accidental_placement_ = 0;
   last_keysig_ = SCM_EOL;
@@ -507,7 +508,7 @@ void
 Accidental_engraver::process_music ()
 {
   SCM sig = get_property ("keyAlterations");
-  if (last_keysig_ != sig)
+  if (!scm_is_eq (last_keysig_, sig))
     update_local_key_signature (sig);
 }