ref: 62c69b81c7249ee4e69c44c64391cdf9d1a7fc3e 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; }