ref: 482e03c64d1e12a2afd744d504cbc2f9f9da2756
dir: /sys/src/libc/port/runestrrchr.c/
#include <u.h> #include <libc.h> Rune* runestrrchr(Rune *s, Rune c) { Rune *r; if(c == 0) return runestrchr(s, 0); r = 0; while(s = runestrchr(s, c)) r = s++; return r; }