nkf_isxdigit 4619 ext/nkf/nkf-utf8/nkf.c if (!nkf_isxdigit(c2)){ nkf_isxdigit 4624 ext/nkf/nkf-utf8/nkf.c if (!nkf_isxdigit(c3)){ nkf_isxdigit 4676 ext/nkf/nkf-utf8/nkf.c if (!nkf_isxdigit(buf[i])){ nkf_isxdigit 6572 ext/nkf/nkf-utf8/nkf.c for (i = 2; i < 8 && nkf_isxdigit(p[i]); i++){