check for calculation-in-progress marker in get_property().

[lilypond.git] / lily / rest-collision.cc

diff --git a/lily/rest-collision.cc b/lily/rest-collision.cc
index b8ad86ba916a9c5e31633da5d44a7548a4bcdb51..8ba0d49c7bc43db14cab429444cde325e9076c9c 100644 (file)
--- a/lily/rest-collision.cc
+++ b/lily/rest-collision.cc
@@ -92,6 +92,9 @@ SCM
 Rest_collision::calc_positioning_done (SCM smob)
 {
   Grob *me = unsmob_grob (smob);
+
+  me->set_property ("positioning-done", SCM_BOOL_T);
+
   extract_grob_set (me, "elements", elts);
 
   vector<Grob*> rests;