Can't use UTF-8 on Windows 7 64 bit

[lkppo]

Hello,

I have put in a file test.exs, encoded in UTF-8, the very first sample of the tutorial (IO.puts "Hello world from Elixir") and launched with PowerShell and cmd the command bellow :

> elixir.bat .\test.exs

I have also tested those commands :

> iex.bat
Interactive Elixir (1.5.1) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> IO.puts "BÉPO"
** (UnicodeConversionError) invalid encoding starting at <<144, 80, 79, 34, 10>>
    (elixir) lib/string.ex:1840: String.to_charlist/1
iex(1)> Terminer le programme de commandes (O/N) ? o
> chcp 65001
Page de codes active : 65001
> iex.bat
Interactive Elixir (1.5.1) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> IO.puts "BÉPO"

After I changes the page code, the output in iex with a É character never return! I can only use Ctrl+C to end.

Environment

• Erlang/OTP 20 [erts-9.0] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:10] Elixir 1.5.1
• Operating system: Windows 7 Pro 64 bit

Current behavior

> ** (SyntaxError) test.exs:1: unexpected token: "´╗┐" (column 1, codepoint U+FEFF)
>     (elixir) lib/code.ex:376: Code.require_file/2

Expected behavior

> Hello world from Elixir

[josevalim]

Can you try running iex.bat --werl and let us know if it works there? I believe this is a duplicate, I will try to find a previous one.

[josevalim]

Found it! #5596

[lkppo]

iex.bat --werl launch a erlang interpreter

UTF-8 is ok with that.

[josevalim]

Thanks for checking. If you follow the linked issue, we have reported this as an Erlang bug and it has unfortunately been tagged as won't fix. So you need to use --werl. You can set the IEX_WITH_WERL environment variable to 1 in your system configuration if you always want to use --werl.

[lkppo]

Ok, I read the first report. Too bad. How can I execute my script with werl interpreter without opening it?

[josevalim]

I am not quite sure if it is possible. AFAIK werl always open up as a separate window since it needs to use a completely separate input mode. You can try using other shells such as powershell and mingw.

[lkppo]

Ok, I tried with Git Bash MINGW32 and it's half broken :

S@F MINGW32 ~
$ elixir text.exs
Hello world from Elixir

S@F MINGW32 ~
$ elixir text.exs
Hello world from Elixir BÉPO

With cygwin32 it works.

It can go for home scripts but I can not do DIY on a prod server. Pity.

Thanks for you help josevalim.