ref: 2c9f4c21ad0b5e66f06a3613f6e21d5fe9f0da6a 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; }