ref: 5c41fd94d8c8e9e5bd30060e5a2323e84788b5eb 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; }