ref: 20c8a57d719d8cd9afd9bbcd1564d855a8c6de7c 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; }