Bug when $USERNAME is cyryllic

["Максим Щербаков" <herobrine135111@gmail.com>]

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Hello, this is the first time I am using mailing lists, don't be mad at me if I do something wrong.
Sorry for errors, English is not my native language.


I found a bug in zsh:

If I add this line to the top of /etc/passwd (before the "root" line, also works with other UIDs):
> quote_type
> Студент:x:0:0:root:/home/Студент:/usr/bin/zsh

After logging in as "root" (so environment will be good, as in this case "root" line is used for login), and running this commands:
> quote_type
> mkdir -p '/home/Студент'
> env -i LANG=C.UTF-8 zsh -fc 'cd; echo "$USERNAME | ${(%):-%n} | $LOGNAME"'

I will get:
> quote_type
> �т��ент | Ст\M-Q\M-p\M-4ент | Студент

Instead of:
> quote_type
> Студент | Студент | Студент

As we can see, $LOGNAME is fine, but $USERNAME and %n are bad.

-----------------------------

Also, probably related, zcompile don't work on cyryllic paths:
> quote_type
> touch '/home/Студент/.zc/.zcompdump-5.9'
> zcompile '/home/Студент/.zc/.zcompdump-5.9'

Results in:
> quote_type
> zcompile: can't write zwc file: /home/Студент/.zc/.zcompdump-5.9.zwc


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