ref: ec7a543450ad5c0ed2eeb32f45a1e57a36c47ac7 dir: /sys/src/libc/port/runestrcat.c/
#include <u.h> #include <libc.h> Rune* runestrcat(Rune *s1, Rune *s2) { runestrcpy(runestrchr(s1, 0), s2); return s1; }