>	as seen in /usr/include/ctype.h, _ctype_ has too little number of bits 
>	in it and derives certain definitions (like isgraph) from other
>	bits.  the fact could become obstacle to support certain kind of
>	locale.  i don't have the example, but is it really okay to assume
>	the following?
>		isgraph(x) == ispunct(x) || isupper(x) || islower(x) ||
>		    isdigit(x)

	i checked ISO/IEC 9899:1999(E) and it looks okay (ispunct is
	defined to allow the above).

itojun