Unable to permanently set codepage to 65001 in wt.exe

[rivy]

Environment

C:\>ver
Microsoft Windows [Version 10.0.18362.175]

C:\>where wt.exe
C:\Users\Roy\AppData\Local\Microsoft\WindowsApps\wt.exe

C:\>echo %LocalAppData%
LOCALAPPDATA=C:\Users\Roy\AppData\Local

Steps to reproduce

Setting "CodePage" within the registry doesn't result in the correct code page within the wt terminal window.

Neither this ...

C:\>C:\Windows\System32\reg.exe add HKCU\Console\%LocalAppData^%_Microsoft_WindowsApps_wt.exe /v CodePage /t REG_DWORD /d 65001 /f
The operation completed successfully.

nor this ...

C:\>C:\Windows\System32\reg.exe add HKCU\Console\C:_Users_Roy_AppData_Local_Microsoft_WindowsApps_wt.exe /v CodePage /t REG_DWORD /d 65001 /f
The operation completed successfully.

result in the correct codepage within the wt terminal window..

Expected behavior

C:>chcp
Active code page: 65001

Actual behavior

C:\>chcp
Active code page: 437

[rivy]

I can force the codepage to 65001 by enabling BETA: Use Unicode UTF-8 for worldwide language support in the "Control Panel \ Clock and Region \ Region \ Administrative \ Change system locale..." dialog box and rebooting.

But, I would expect a less global setting to be available.

[DHowett-MSFT]

This boils down to #1802. You’re unable to set the console codepage for WT using the Console registry keys because wt is not a console application. Those keys only apply to things that run INSIDE consoles, not things that ARE console hosts.

What we need is a way for WT to force its connected console hosts to be in codepage 65001. That’s the essence of 1802.