error (r, _("Invalid number of variables %d."), r->var_cnt);
r->widths = pool_nalloc (r->pool, r->var_cnt, sizeof *r->widths);
error (r, _("Invalid number of variables %d."), r->var_cnt);
r->widths = pool_nalloc (r->pool, r->var_cnt, sizeof *r->widths);