ref: 6c00c9b0876ee6d96aa76e11854d0ff8ed8c4dbe 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; }