_P                 26 include/linux/ctype.h #define isgraph(c)	((__ismask(c)&(_P|_U|_L|_D)) != 0)
_P                 28 include/linux/ctype.h #define isprint(c)	((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)
_P                 29 include/linux/ctype.h #define ispunct(c)	((__ismask(c)&(_P)) != 0)