ISDIGIT           285 lib/nstrftime.c #define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9)
ISDIGIT           271 lib/sig2str.c  #define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
ISDIGIT           111 src/regex-emacs.c #define ISDIGIT(c) ((c) >= '0' && (c) <= '9')
ISDIGIT           167 test/manual/etags/c-src/etags.c #define ISDIGIT(c)	isdigit (CHAR (c))