ref: 89f87dd0e3cf8cf4e1472ec2900a8d0f0c676238 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; }