Change the behavior of nested StaffGroupers.

[lilypond.git] / lily / vertical-align-engraver.cc

diff --git a/lily/vertical-align-engraver.cc b/lily/vertical-align-engraver.cc
index 094967d98dc30518c576dbdc4cdf0ee0dfdf8ebd..9a6e3afa30c8e58aff8e92e3168c23d504fa3755 100644 (file)
--- a/lily/vertical-align-engraver.cc
+++ b/lily/vertical-align-engraver.cc
@@ -163,9 +163,10 @@ Vertical_align_engraver::acknowledge_axis_group (Grob_info i)
            }
        }
     }
-  else if (qualifies (i) && !unsmob_grob (i.grob ()->get_object ("staff-grouper")))
+  else if (qualifies (i))
     {
       Pointer_group_interface::add_grob (valign_, ly_symbol2scm ("elements"), i.grob ());
-      i.grob ()->set_object ("staff-grouper", valign_->self_scm ());
+      if (!unsmob_grob (i.grob ()->get_object ("staff-grouper")))
+       i.grob ()->set_object ("staff-grouper", valign_->self_scm ());
     }
 }