Don't set 'tieMelismaBusy until old waiting heads have been cleared (issue4309052)

[tdanielsmusic]

Reviewers: ,

Message:
This is a suggested fix to issue 742:

Delayed ties influence lyrics (even with tieWaitForNote unset)
http://code.google.com/p/lilypond/issues/detail?id=742

Reg tests run clean.

Description:
Don't set 'tieMelismaBusy until old waiting heads have been cleared

 - fixes 742

Please review this at http://codereview.appspot.com/4309052/

Affected files:
  M lily/tie-engraver.cc


Index: lily/tie-engraver.cc
diff --git a/lily/tie-engraver.cc b/lily/tie-engraver.cc
index  
3ca2d2569acf74d4ba1dcc502dcf33df4f8af906..b13e68050c97f0d2a162a27d6650837f0fd6b6cf  
100644
--- a/lily/tie-engraver.cc
+++ b/lily/tie-engraver.cc
@@ -53,7 +53,7 @@ struct Head_event_tuple
   // This is needed for tied chords, e.g. <c e g>~ g, because otherwise  
the c
   // and e will trigger a warning for an unterminated tie!
   bool tie_from_chord_created;
-
+
   Head_event_tuple ()
   {
     head_ = 0;
@@ -145,7 +145,7 @@ Tie_engraver::acknowledge_note_head (Grob_info i)
       */
       if (!right_ev || !left_ev)
        continue;
-
+
       if (ly_is_equal (right_ev->get_property ("pitch"),
                       left_ev->get_property ("pitch")))
        {
@@ -155,7 +155,7 @@ Tie_engraver::acknowledge_note_head (Grob_info i)
          SCM cause = heads_to_tie_[i].tie_event_
            ? heads_to_tie_[i].tie_event_->self_scm ()
            : heads_to_tie_[i].tie_stream_event_->self_scm ();
-       
+
          announce_grob (p, cause);
          Tie::set_head (p, LEFT, th);
          Tie::set_head (p, RIGHT, h);
@@ -164,9 +164,9 @@ Tie_engraver::acknowledge_note_head (Grob_info i)
 	  if (is_direction (unsmob_stream_event (cause)->get_property  
("direction")))
            {
 	      Direction d = to_dir (unsmob_stream_event (cause)->get_property  
("direction"));
-             p->set_property ("direction", scm_from_int (d));
+             p->set_property ("direction", scm_from_int (d));
            }
-       
+
          ties_.push_back (p);
          heads_to_tie_.erase (heads_to_tie_.begin () + i);

@@ -193,9 +193,6 @@ Tie_engraver::acknowledge_note_head (Grob_info i)
 void
 Tie_engraver::start_translation_timestep ()
 {
-  context ()->set_property ("tieMelismaBusy",
-                           ly_bool2scm (heads_to_tie_.size ()));
-
   if (heads_to_tie_.size () && !to_boolean (get_property  
("tieWaitForNote")))
     {
       Moment now = now_mom ();
@@ -208,6 +205,9 @@ Tie_engraver::start_translation_timestep ()
            }
        }
     }
+
+  context ()->set_property ("tieMelismaBusy",
+                           ly_bool2scm (heads_to_tie_.size ()));
 }

 void
@@ -232,7 +232,7 @@ Tie_engraver::stop_translation_timestep ()
     }

   vector<Head_event_tuple> new_heads_to_tie;
-
+
   for (vsize i = 0; i < now_heads_.size (); i++)
     {
       Grob *head = now_heads_[i];
@@ -244,8 +244,8 @@ Tie_engraver::stop_translation_timestep ()
          // may happen for ambitus
          continue;
        }
-       
-
+
+
       SCM left_articulations = left_ev->get_property ("articulations");

       Stream_event *tie_event = 0;
@@ -257,11 +257,11 @@ Tie_engraver::stop_translation_timestep ()
          Stream_event *ev = unsmob_stream_event (scm_car (s));
          if (!ev)
            continue;
-       
+
          if (ev->in_event_class ("tie-event"))
            tie_event = ev;
        }
-       
+
       if (left_ev && (tie_event || tie_stream_event))
        {
          Head_event_tuple event_tup;
@@ -284,7 +284,7 @@ Tie_engraver::stop_translation_timestep ()
              end += get_event_length (left_ev);
            }
          event_tup.end_moment_ = end;
-       
+
          new_heads_to_tie.push_back (event_tup);
        }
     }
@@ -300,7 +300,7 @@ Tie_engraver::stop_translation_timestep ()
   // hmmm, how to do with copy () ?
   for (vsize i = 0; i < new_heads_to_tie.size (); i++)
     heads_to_tie_.push_back (new_heads_to_tie[i]);
-
+
   event_ = 0;
   now_heads_.clear ();
 }