ref: 826769af8a3fd2c2f7ba5347f2c7a384c6bb1cd5 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; }