static string rational_string (Rational);
static string pointer_string (void const *);
static string precision_string (double x, int n);
- static vector<string> split (string str, char c);
+ // static vector<string> split (string str, char c);
static string i64_string (I64, char const *fmt = 0);
static string to_lower (string s);
static string to_upper (string s);