ref: 7d3cc1c55a435bd9e3d37d9bf8a9299ea9e1f87e 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; }