FILTER_NAMEONLY
(!(f->flags & FILTER_NAMEONLY) &&
(!(f->flags & FILTER_NAMEONLY) &&
'n', MDB_OPT_SETBITS, FILTER_NAMEONLY, &f.flags,
(!(f->flags & FILTER_NAMEONLY) &&
(!(f->flags & FILTER_NAMEONLY) &&
'n', MDB_OPT_SETBITS, FILTER_NAMEONLY, &f.flags,