ref: eda0723dd3e8d781dd323bb20207ce1f1dfcc368 dir: /libkern/strrchr.c/
#include <lib9.h> char* strrchr(char *s, int c) { char *r; if(c == 0) return strchr(s, 0); r = 0; while(s = strchr(s, c)) r = s++; return r; }