# Strftime & strptime bug #27239 is present on all platforms, not just Windows

**URL:** <https://discourse.julialang.org/t/strftime-strptime-bug-27239-is-present-on-all-platforms-not-just-windows/11191>\
**Category:** Internals & Design\
**Tags:** bug\
**Created:** [May 27, 2018, 10:30pm UTC](https://discourse.julialang.org/t/strftime-strptime-bug-27239-is-present-on-all-platforms-not-just-windows/11191 "2018-05-27T22:30:53Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![alkorang](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/alkorang/32/4243_2.png) [@alkorang](https://discourse.julialang.org/u/alkorang)\
**Post date:** [May 28, 2018, 5:35am UTC](https://discourse.julialang.org/t/strftime-strptime-bug-27239-is-present-on-all-platforms-not-just-windows/11191/2 "2018-05-28T05:35:03Z")

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Thank you for your comment.

> [@ScottPJones](#):
>
> the characters are not “invalid”, they are completely valid `EUC-KR (or CP949)` encoded characters

They could be valid `EUC-KR` characters but it does not mean they are valid `UTF-8`. `EUC-KR` is not compatible with `UTF-8` except ASCII plane. It bothers people in this culture because `EUC-KR` is not compatible with both codepage and encoding. For example, `한` is `0xc7d0` in `EUC-KR`, but `U+d55c` in Unicode and will be encoded as `0xed9f9c` in `UTF-8`.

Currently Julia is not aware of other encodings except Unicode I guess. (at least in `base` and `stdlib`) Python 3 only supports `str` in Unicode yet use different encodings for encode/decode bytes. `strftime()` function of `time` module in Python 3 returns correct `str`. I also want to use Unicode (especially `UTF-8`) mainly in Julia. It requires every bytes which are not compatible with Unicode must be transcoded. I think it will be great if packages such as [StringEncodings.jl](https://github.com/nalimilan/StringEncodings.jl) becomes `base` or `stdlib`.

> The fix needs to be applied for platforms (which makes it simpler anyway), and a similar fix needs to be made for strptime as well.

Thank you! I should search `wchar_t` version of `strptime()`. If I understand correctly, do you meen the problem can also happen in different platforms, not only Windows?

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