C_UNBLOCK
C_UNBLOCK))
if (ddflags & (C_BLOCK | C_UNBLOCK)) {
ddflags |= C_UNBLOCK;
{ "block", C_BLOCK, C_UNBLOCK, NULL },
{ "unblock", C_UNBLOCK, C_BLOCK, NULL },
if (!(ddflags & (C_BLOCK | C_UNBLOCK))) {
else if (ddflags & (C_BLOCK | C_UNBLOCK))
else if (ddflags & (C_BLOCK | C_UNBLOCK))