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#include <string.h> char *strtok_r(char *s, const char *sep, char **p) { if (!s && !(s = *p)) return NULL; s += strspn(s, sep); if (!*s) return *p = 0; *p = s + strcspn(s, sep); if (**p) *(*p)++ = 0; else *p = 0; return s; }