ref: f90f03a2e03ae243a800e11d6e04a63781940b1f dir: /sys/src/ape/lib/ap/gen/strrchr.c/
#include <string.h> char* strrchr(const char *s, int c) { char *r; if(c == 0) return strchr(s, 0); r = 0; while(s = strchr(s, c)) r = s++; return r; }