iconv
upper;lower;alpha;digit;xdigit;space;print;graph;blank;cntrl;punct;alnum
toupper;tolower
7
1
ANSI_X3.4-1968
72
84
1
0
1
2
3
4
5
6
7
8
9
1
0
1
2
3
4
5
6
7
8
9
48
49
50
51
52
53
54
55
56
57
1354
1
0

0