regex/cclass.h (19 lines of code) (raw):
/* character-class table */
#define CCLASS_ALNUM 0
#define CCLASS_ALPHA 1
#define CCLASS_BLANK 2
#define CCLASS_CNTRL 3
#define CCLASS_DIGIT 4
#define CCLASS_GRAPH 5
#define CCLASS_LOWER 6
#define CCLASS_PRINT 7
#define CCLASS_PUNCT 8
#define CCLASS_SPACE 9
#define CCLASS_UPPER 10
#define CCLASS_XDIGIT 11
#define CCLASS_LAST 12
extern struct cclass {
const char *name;
const char *chars;
const char *multis;
uint mask;
} cclasses[];