trim example.

[lilypond.git] / lily / staff-collecting-engraver.cc

diff --git a/lily/staff-collecting-engraver.cc b/lily/staff-collecting-engraver.cc
index fe522a049747284eb8efd91dbf59442173a5e533..af4d5e04f08bb7ee9b9a8289245b965ed7dd511a 100644 (file)
--- a/lily/staff-collecting-engraver.cc
+++ b/lily/staff-collecting-engraver.cc
@@ -16,6 +16,7 @@ class Staff_collecting_engraver : public Engraver
 public:
   TRANSLATOR_DECLARATIONS (Staff_collecting_engraver);
   DECLARE_ACKNOWLEDGER (staff_symbol);
+  DECLARE_END_ACKNOWLEDGER (staff_symbol);
 };
 
 Staff_collecting_engraver::Staff_collecting_engraver ()
@@ -31,13 +32,23 @@ Staff_collecting_engraver::acknowledge_staff_symbol (Grob_info gi)
   context ()->set_property ("stavesFound", staffs);
 }
 
+void
+Staff_collecting_engraver::acknowledge_end_staff_symbol (Grob_info gi)
+{
+  SCM staffs = get_property ("stavesFound");
+  staffs = scm_delq (gi.grob ()->self_scm (), staffs);
+
+  context ()->set_property ("stavesFound", staffs);
+}
+
 #include "translator.icc"
+
 ADD_ACKNOWLEDGER (Staff_collecting_engraver, staff_symbol);
+ADD_END_ACKNOWLEDGER (Staff_collecting_engraver, staff_symbol);
 
 ADD_TRANSLATOR (Staff_collecting_engraver,
                /* doc */ "Maintain the stavesFound variable",
 
                /* create */ "",
-               /* accept */ "",
                /* read */ "stavesFound",
                /* write */ "stavesFound");