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#define CHAR_CLASSES \
"alnum\0alpha\0blank\0cntrl\0digit\0graph\0" \
"lower\0print\0punct\0space\0upper\0xdigit\0"
enum {
CCLASS_ALNUM, CCLASS_ALPHA, CCLASS_BLANK, CCLASS_CNTRL,
CCLASS_DIGIT, CCLASS_GRAPH, CCLASS_LOWER, CCLASS_PRINT,
CCLASS_PUNCT, CCLASS_SPACE, CCLASS_UPPER, CCLASS_XDIGIT
};
extern int match_class(const char *name);
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