Workaround for powershell raster font problem

paste_wsl() uses powershell.exe, which triggers the powershell raster font problem.

See https://patrickwu.space/2019/08/03/wsl-powershell-raster-font-problem/

I verified that his technique works at least for me, and I implemented an alternative paste_wsl() based on it:

def paste_wsl():
cmd = ("oemcp=$(reg.exe query 'HKLM\\SYSTEM\\CurrentControlSet\\Control\\Nls\\CodePage'"
" /v OEMCP 2>&1 | sed -n 3p | sed -e 's|\\r||g' | grep -o '[[:digit:]]*')"
"\nchcp.com $oemcp >/dev/null 2>/dev/null"
"\npowershell.exe Get-Clipboard"
"\nchcp.com 65001 >/dev/null 2>/dev/null")
stdout = os.popen(cmd).read()
return stdout[:-1]

It's super-ugly though, so in my case I put this in the client code, and I haven't issued a pull request. It seems like there ought to be a cleaner way. I tried shelling out the commands separately, but for some reason that didn't work. I'm also not sure how universal this solution is.

Start by inspecting paste_wsl() and the linked PowerShell raster-font workaround. Reproduce the clipboard behavior under WSL, compare the proposed approach with separate shell commands, and determine a cleaner, broadly applicable fix; done means WSL pasting avoids the raster-font problem without requiring client-side workaround code.

Written by the indexing model from the issue text.