OP_NONE
case OP_NONE:
tgt->f_srcop = tgt->f_dstop = OP_NONE;
tgt->f_dstop = OP_NONE;
tgt->f_srcop = tgt->f_dstop = OP_NONE;
if (tgt->f_srcop == OP_NONE) {
if (tgt->f_dstop == OP_NONE) {
tgt->f_srcop = tgt->f_dstop = OP_NONE;
if (fp->f_srcop != OP_NONE) {
if (fp->f_dstop != OP_NONE) {
if ((fp->f_srcop == OP_NONE ||
(fp->f_dstop == OP_NONE ||