ref: d7613e356c55a3b7a1140a1f6d8aa6dca43b9d97 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; }