case 'y': \
case 'z': \
u++; \
+ /* fall through */ \
case 'e': \
u++; \
+ /* fall through */ \
case 'p': \
u++; \
+ /* fall through */ \
case 't': \
u++; \
+ /* fall through */ \
case 'g': \
u++; \
+ /* fall through */ \
case 'm': \
u++; \
+ /* fall through */ \
case 'k': \
u++; \
if (e++ == cp) \
return -EINVAL; \
+ /* fall through */ \
case '\n': \
case '\0': \
if (*e == '\n') \