cd desktop
mkdir あいうえお
cd あいうえお
New-Item かきくけこ.txt

$OutputEncoding.EncodingName # US-ASCII by default
ls | clipboard.exe --copy

<#
    ??????: C:\Users\UserName\Desktop\?????


Mode                LastWriteTime         Length Name                                 
----                -------------         ------ ----                                 
-a----       2020/02/04      9:33              0 ?????.txt                            
#>


$OutputEncoding = [System.Text.Encoding]::UTF8
ls | clipboard.exe --copy

<#
    ディレクトリ: C:\Users\UserName\Desktop\あいうえお


Mode                LastWriteTime         Length Name                                 
----                -------------         ------ ----                                 
-a----       2020/02/04      9:33              0 かきくけこ.txt                            
#>


$OutputEncoding = [System.Text.Encoding]::Unicode
ls | clipboard.exe --copy

thread 'main' panicked at 'Error: Could not copy to clipboard: Error { repr: Custom(Custom { kind: InvalidData, error: StringError("stream did not contain valid UTF-8") }) }', src\libcore\result.rs:906:4
note: Run with `RUST_BACKTRACE=1` for a backtrace.