#if 0
static void
strcpy_cat(char *buf, size_t max, const char *first, const char *second)
{
  size_t	len;

  len	= strlen(first);
  FATAL(len>=max);
  memcpy(buf, first, len);
  FATAL(len+strlen(second)>=max);
  strcpy(buf+len, second);
}
#endif