bug: Unicode characters as command line arguments do not work as expected.

[harvimt]

Describe the bug
Pyenv does not handle unicode arguments passed to an executable correctly.

To Reproduce
Steps to reproduce the behavior:
0. Make sure your console has a Unicode font (such as Deja Vu Sans Mono), the default font (Courier New) does not support some unicode characters.

1. write a simple program to test sys.argv is passed in correctly (argvtest.py)

import sys
print(sys.argv[1])

Run it with some unicode arguments, and see that they are mangled.

Expected behavior
Unicode command line arguments are passed from are expected to work (on python3 at least)

Screenshots
Included above.

Desktop (please complete the following information):

• OS: Windows 10
• cmd.exe (powershell exhibits slightly different behavior with the snowman emoji, and I can't tell why, so cmd.exe was used which shows the problem clearly)
• pyenv and python versions

Additional context
Add any other context about the problem here.

[harvimt]

ok. I've looked at the internals there are 2 bugs

1. VBS chokes on the unicode outside the basic multilingual plane.
2. exec.bat needs to have chcp 1250 (utf8) put at the top

2 is an easy fix. I don't know enough VBScript to fix the first problem.

[harvimt]

hah. ok 1 ended up being medium easy as well I just had to google around for utf8 support.

PR incoming.

Unfortunately I do not know if this will affect git bash/linux subsystem at all (I suspect not? as they're already pretty utf8 aware)

[harvimt]

of course what I had installed previously, and what's in HEAD are totally different.

the latest version errors differently... but still not ideal

[harvimt]

That should fix the problem, #52

I think.

[kirankotari]

New release on Air. Closing this.

[kirankotari]

@papercuptech @dedale this is broken in the latest version.