+ return SCM_UNSPECIFIED;
+}
+
+MAKE_SCHEME_CALLBACK(Tie_column, calc_positioning_done, 1)
+SCM
+Tie_column::calc_positioning_done (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+ extract_grob_set (me, "ties", ro_ties);
+ Link_array<Grob> ties (ro_ties);
+ if (!ties.size ())
+ return SCM_BOOL_T;
+
+ if (ties.size() == 1)