static bool is_extraneous_column_from_ligature (Grob *);
static Real minimum_distance (Grob *l, Grob *r);
static Interval break_align_width (Grob *me, SCM align_sym);
static bool is_extraneous_column_from_ligature (Grob *);
static Real minimum_distance (Grob *l, Grob *r);
static Interval break_align_width (Grob *me, SCM align_sym);