Unreadable error text (wrong codepage)

- VS Code Version: 1.39.2
- OS Version: win8
- Code Runner Version: 09.14

Description of what the bug:
When some error appears it is totally unreadable because of the wrong codepage.
Such a goofy error message doesn't make any sense.
It's impossible to understand what's wrong.
For ex:
[Running] autohotkey "c:\AHKs\Test11.ahk"
"autohotkey" �� ���� ����७��� ��� ���譥�
��������, �ᯮ��塞�� �ணࠬ��� ��� ������ 䠩���.

[Done] exited with code=1 in 0.053 seconds

Steps to reproduce the behavior:
1. Install Autohotkey
2. Run any ahk-script in VS Code

**Actual behavior**
Unreadable error.

**Expected behavior**
An error in English.

**Screenshots**
https://i.imgur.com/chAz8GG.jpg