PSReadline causes Ø to be displayed as O in Powershell

[HaraldKorneliussen]

When using a Norwegian keyboard layout, and writing the letter ø, it shows as an o. It still IS an ø, for instance if you write

echo "bo" <--- really write bø

you get back

bø

Stripping diacritics, even for display purposes, is never a good internationalization solution. For Norwegian it can turn a common word like "høre" (to listen) into a nasty slur.

This bug was previously reported here:

https://github.com/microsoft/terminal/issues/308 

but was apparently never passed on to here, and is still present.

Since the error disappears when

Remove-Module PSReadline

is run, it seems to be this module which causes the problem. See the linked issue for more discussion about what happens.

Environment data

PS version: 5.1.17763.592
PSReadline version: 2.0.0-beta2
os: 10.0.17763.1 (WinBuild.160101.0800)
PS file version: 10.0.17763.1 (WinBuild.160101.0800)
BufferWidth: 119
BufferHeight: 3000

Steps to reproduce

Change keyboard layout to Norwegian, use on-screen keyboard to write "echo ø". Watch it display echo o, but return and display ø when run.

[HaraldKorneliussen]

I tried upgrading to 2.0.0-beta4 to see if the error is still present, and accidentally downgraded to 1.2. I can at least confirm the error is not present there.

[HaraldKorneliussen]

With a correct upgrade to 2.0.0-beta4, I can confirm the error is not there. So it looks like this has been accidentally fixed as part of some broader issue, maybe with #768 (Fix init for non-US keyboards)