wcsftime
size_t wcsftime(wchar_t * __restrict, size_t, const wchar_t * __restrict,
wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]),
wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]),
wcsftime(buf, sizeof(buf)/sizeof(buf[0]), L"%a", &tm);
(void)wcsftime(buf, sizeof(buf), fmt, &tp);