ref: 3ed1e24460dbefcb247702aed6c7d4c98c2f2ca5 dir: /sys/src/libc/port/strcat.c/
#include <u.h> #include <libc.h> char* strcat(char *s1, char *s2) { strcpy(strchr(s1, 0), s2); return s1; }