IS_DIGIT          130 third_party/libxml/src/include/libxml/parserInternals.h #define IS_DIGIT(c) xmlIsDigitQ(c)
IS_DIGIT           46 third_party/libxml/src/uri.c #undef IS_DIGIT
IS_DIGIT           51 third_party/libxml/src/uri.c #define IS_DIGIT(x) (((x) >= '0') && ((x) <= '9'))