ref: 7f3cb2a9c5b740dc86c4ac4e3d4cb45bb2e69dac 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; }