Note：並沒有升級wsl->wsl2。（因為似乎升級到wsl2後，就不能直接使用win的檔案夾了。所以不想升級wsl）

最近升級了win10，導致cmder不能用了。解決方案如下：

AGitHub user posted this workaroundwhich worked for me:

I've fixed the issue by doing this:

1. Download latestcygwin1-20200531.dll.xzfromhttps://cygwin.com/snapshots/and unpack the file ascygwin1.dllintoConEmu\wsl\(replacing the original file there)
2. Download @Biswa96'swslbridge2fromhttps://github.com/Biswa96/wslbridge2/releasesand unpack to the same directory
3. Replacing{WSL::bash}task's Command with:

set "PATH=%ConEmuBaseDirShort%\wsl;%PATH%" & %ConEmuBaseDirShort%\conemu-cyg-64.exe %ConEmuBaseDirShort%\wsl\wslbridge2.exe -cur_console:pm:/mnt -eConEmuBuild -eConEmuPID -eConEmuServerPID -l
 

I can now access my Ubuntu under W10 just like before the W10 upgrade. Backscroll and arrows in VIM work as expected.

The key part of step 3 is to replaceconemu-cyg-64.exe --wslwithconemu-cyg-64.exe %ConEmuBaseDirShort%\wsl\wslbridge2.exe.

Longer term, it looks like the author of ConEmu is working on switching to the new