C_BLOCK
if (ddflags & (C_BLOCK | C_LCASE | C_SWAB | C_UCASE |
if (ddflags & (C_BLOCK|C_UNBLOCK)) {
cfunc = ddflags & C_BLOCK ? block : unblock;
ddflags |= C_BLOCK;
{ "block", C_BLOCK, C_UNBLOCK, NULL },
{ "unblock", C_UNBLOCK, C_BLOCK, NULL },
if (!(ddflags & (C_BLOCK|C_UNBLOCK))) {
if (flags & (C_BLOCK|C_UNBLOCK))