Edit: cclass.h
/* character-class table */ static struct cclass { unsigned char *name; unsigned char *chars; unsigned char *multis; } cclasses[] = { {"alnum", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", ""}, {"alpha", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz", ""}, {"blank", " \t", ""}, {"cntrl", "\007\b\t\n\v\f\r\1\2\3\4\5\6\16\17\20\21\22\23\24\ \25\26\27\30\31\32\33\34\35\36\37\177", ""}, {"digit", "0123456789", ""}, {"graph", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\ 0123456789!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", ""}, {"lower", "abcdefghijklmnopqrstuvwxyz", ""}, {"print", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\ 0123456789!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~ ", ""}, {"punct", "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", ""}, {"space", "\t\n\v\f\r ", ""}, {"upper", "ABCDEFGHIJKLMNOPQRSTUVWXYZ", ""}, {"xdigit", "0123456789ABCDEFabcdef", ""}, {NULL, 0, ""} };
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