CUT_TAIL          711 ext/racc/cparse/cparse.c         CUT_TAIL(v->vstack, len);
CUT_TAIL          714 ext/racc/cparse/cparse.c             CUT_TAIL(v->tstack, len);
CUT_TAIL          716 ext/racc/cparse/cparse.c         CUT_TAIL(v->state, len);