*ao_scheme_poly_cons(ao_scheme_stack->sexprs) = *ao_scheme_poly_cons(ao_scheme_v);
ao_scheme_v = ao_scheme_stack->sexprs;
DBGI("sexprs rewritten to: "); DBG_POLY(ao_scheme_v); DBG("\n");
*ao_scheme_poly_cons(ao_scheme_stack->sexprs) = *ao_scheme_poly_cons(ao_scheme_v);
ao_scheme_v = ao_scheme_stack->sexprs;
DBGI("sexprs rewritten to: "); DBG_POLY(ao_scheme_v); DBG("\n");