ref: 26f0aa33d91442fc7a56fc5f5c9b56b5f5f84ce2 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; }