ref: 7980c670a598eb7da99dbafd3b1e2e95c1c7b437 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; }