#if RSBETWEEN_DEBUG
log2( p, "after first R", cmp_l, cmp_r);
#endif
while (cmp_r < 0) /* r before m */
{
/* -2, earlier record, don't count level */
#if RSBETWEEN_DEBUG
log2( p, "after first R", cmp_l, cmp_r);
#endif
while (cmp_r < 0) /* r before m */
{
/* -2, earlier record, don't count level */