ref: b6e966d03ba5e331dae9fae1b05a9f97f9a1e272 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; }