BUG: line-length returns wrong number of characters when using special characters

[ChristianZimpelmann]

The returned number of characters is wrong when using special characters like ä, ö, ü (on Windows).

I have the follwing yaml-file:

---
check: 1
test: ä, ü, ö are special characters. Check whether they influence detected line lenght.

Lenth of line 3 is 88, but yamllint test.yaml returns:

3:89      error    line too long (91 > 88 characters)  (line-length)

Each of those three special characters seem to be counted as two characters.

Two more remarks:

• The error seems to not appear on Ubuntu
• The bug might be related to line-length does not work with Unicode characters #146.

[adrienverge]

Hello,

I guess Windows doesn't load your file with the correct encoding, so Python treats ä, ü, ö as ä, ü, ö.

Have you tried helping Windows/Python use the right encoding (I guess UTF-8)? I don't know much about Windows, but I just read you can use PYTHONUTF8=1 environment variable: https://dev.to/methane/python-use-utf-8-mode-on-windows-212i.

[ChristianZimpelmann]

That worked! Thank you very much!