nkf_isdigit 281 ext/nkf/nkf-utf8/nkf.c #define nkf_isxdigit(c) (nkf_isdigit(c) || ('a'<=c && c<='f') || ('A'<=c && c <= 'F')) nkf_isdigit 285 ext/nkf/nkf-utf8/nkf.c #define nkf_isalnum(c) (nkf_isdigit(c) || nkf_isalpha(c)) nkf_isdigit 4223 ext/nkf/nkf-utf8/nkf.c if (!nkf_isdigit(buf[i])){ nkf_isdigit 6010 ext/nkf/nkf-utf8/nkf.c for (i = 0; i < 7 && nkf_isdigit(p[i]); i++){