-#define _C_UPPER 1 /* Upper-case letters */
-#define _C_LOWER 2 /* Lower-case letters */
-#define _C_PRINT 4 /* Printable */
-#define _C_DIGIT 8 /* Digits */
-#define _C_CTRL 16 /* Control characters */
-#define _C_XDIGIT 32 /* Hexadecimal digits */
-#define _C_BLANK 64 /* Blanks */
-#define _C_INNER 128 /* `inner punctuation' -- underscore etc. */
-
-#define _C_ALPHA (_C_UPPER | _C_LOWER)
-#define _C_ALNUM (_C_ALPHA | _C_DIGIT)
-#define _C_WORD (_C_ALNUM | _C_INNER)
-#define _C_WSTART (_C_ALPHA | _C_INNER)
-