AP_F_IFS_IGNORED
if ((ap->ap_flags & AP_F_IFS_IGNORED) == 0) {
ap->ap_flags |= AP_F_IFS_IGNORED;
ap->ap_flags &= ~AP_F_IFS_IGNORED;
if (ap->ap_flags & AP_F_IFS_IGNORED)
ap->ap_flags &= ~AP_F_IFS_IGNORED;
ap->ap_flags &= ~(AP_F_IGNORE_IFS | AP_F_IFS_IGNORED);