. (
(Y-offset-callbacks . (,Hara_kiri_group_spanner::force_hara_kiri_callback))
(Y-extent-callback . ,Hara_kiri_group_spanner::y_extent)
. (
(Y-offset-callbacks . (,Hara_kiri_group_spanner::force_hara_kiri_callback))
(Y-extent-callback . ,Hara_kiri_group_spanner::y_extent)