support `sudo !!` to run the last command

[zadjii-msft]

This is shockingly trivial for CMD.exe. CMD uses the built-in console line-editing, which means that commands run in CMD will use the console's own history buffer. That means sudo can just get the console history with GetConsoleCommandHistory[^1], to find the last run command.

PowerShell, on the other hand, uses PsReadline in the default configuration. That means we'll need the sudo powershell module (#6) to support sudo !! from powershell.

[^1]: Is this actually a private API or just an undocumented one? That's not super clear to me looking at https://github.com/microsoft/terminal/blob/ef96e225da6b0df496390eed9fe31dc7e434a939/src/server/ApiSorter.cpp#L109

[jantari]

PowerShell already has $^ to access the last command, so sudo $^ should work too.

[joshtriplett]

I think it'd be a bad idea to support that directly in sudo, rather than supporting it in cmd (so that it works on any command line).

[zarlo]

$^ takes more work to type

[dongle-the-gadget]

Is this actually a private API or just an undocumented one?

GetConsoleCommandHistory is public, in the consoleapi3.h header in the Windows SDK.