1#include <wchar.h>
 2
 3wchar_t *wcstok(wchar_t *restrict s, const wchar_t *restrict sep, wchar_t **restrict p)
 4{
 5	if (!s && !(s = *p)) return NULL;
 6	s += wcsspn(s, sep);
 7	if (!*s) return *p = 0;
 8	*p = s + wcscspn(s, sep);
 9	if (**p) *(*p)++ = 0;
10	else *p = 0;
11	return s;
12}