Enhance shell autocompletion with a cool new user interface and shell completion protocol

[anki-code]

Hello! Thank you for the new interesting project!

I just want to let you know about 🚀 Upterm — really great proof of concept but it stopped because maintainer was gone. This terminal looks like 21st century terminal. Very sad that it isn't supported.

[zadjii-msft]

This looks really cool, though this looks like something the shell would have to work with the terminal to achieve.

How was Upterm providing those autocomplete suggestions? Did they have their own shell they were using, or were they somehow pulling the auto-completions from bash/zsh/git somehow?

Presuming the shell provided a list of autocompletion suggestions to the terminal, drawing the UI shouldn't be that hard. Cmd would obviously never be able to support this, but powershell core sure could. I'd be curious what kind of perf there would be for something like that, with the shell emitting a list of auto-completion suggestions after some delay/on every character typed.

Doing the collapsible json thing might be quite a bit harder however :P that definitely seems like they had a custom rolled cat that worked directly with the terminal.

[huoyaoyuan]

I think you can get inspired by Visual Studio's C# Interactive and PowerShell ISE.
PowerShell already has a mechanism to collect completions, which is used by dotnet.exe.
And also, don't forget the great Language Server Protocol by Visual Studio.

[n3wt0n]

That would be really cool, or something like the iTerm 2 autocompletion on Mac. (cmd + ;)

This works for both files/folder and commands