LSAVE_DIRTY
c->lpt_drty_flgs &= ~(LTAB_DIRTY | LSAVE_DIRTY);
return (c->lpt_drty_flgs & LSAVE_DIRTY) != 0;
if (!(c->lpt_drty_flgs & LSAVE_DIRTY)) {
c->lpt_drty_flgs |= LSAVE_DIRTY;
if (!(c->lpt_drty_flgs & LSAVE_DIRTY)) {
c->lpt_drty_flgs |= LSAVE_DIRTY;