Fix whitespace of files in Documentation/misc.

[lilypond.git] / lily / rhythmic-music-iterator.cc

diff --git a/lily/rhythmic-music-iterator.cc b/lily/rhythmic-music-iterator.cc
index b547653cd73a6e2751c4c43fd52a682921a83ffb..8d9e75ae723f4f2a70009d3616b9bbde13a0da3b 100644 (file)
--- a/lily/rhythmic-music-iterator.cc
+++ b/lily/rhythmic-music-iterator.cc
@@ -28,9 +28,14 @@
 #include "warn.hh"
 
 Rhythmic_music_iterator::Rhythmic_music_iterator ()
-  : Simple_music_iterator ()
 {
-  last_processed_mom_ = -1;
+}
+
+void
+Rhythmic_music_iterator::construct_children ()
+{
+  Simple_music_iterator::construct_children ();
+  descend_to_bottom_context ();
 }
 
 void
@@ -41,14 +46,34 @@ Rhythmic_music_iterator::process (Moment m)
 
       descend_to_bottom_context ();
 
+      Context *c = get_outlet ();
       Stream_event *ev = get_music ()->to_event ();
       SCM arts = ev->get_property ("articulations");
-      Context *c = get_outlet ();
       
       if (scm_is_pair (arts))
        {
-         ev->set_property ("articulations", SCM_EOL);
+         // There is no point in broadcasting articulations like
+         // harmonic events that nobody listens to.  Those work
+         // exclusively as articulations.
+         SCM listened = SCM_EOL;
+         SCM unlistened = SCM_EOL;
+         for (; scm_is_pair (arts); arts = scm_cdr (arts))
+           {
+             if (scm_is_true
+                 (scm_call_2
+                  (ly_lily_module_constant ("any"),
+                   ly_lily_module_constant ("ly:is-listened-event-class"),
+                   scm_call_1
+                   (ly_lily_module_constant ("ly:make-event-class"),
+                    unsmob_stream_event (scm_car (arts))
+                    ->get_property ("class")))))
+               listened = scm_cons (scm_car (arts), listened);
+             else
+               unlistened = scm_cons (scm_car (arts), unlistened);
+           }
+         ev->set_property ("articulations", scm_reverse_x (unlistened, SCM_EOL));
          c->event_source ()->broadcast (ev);
+         arts = scm_reverse_x (listened, SCM_EOL);
          for (; scm_is_pair (arts); arts = scm_cdr (arts))
            c->event_source ()->broadcast (unsmob_stream_event (scm_car (arts)));
        }