"Ctrl+[" is not bondable as a key chord in PSReadLine

[gwojan]

Environment data

AppVeyor Build: 1.0.553

PS version: 5.1.17763.316
PSReadline version: 2.0.0-beta4, **AppVeyor Build: 1.0.553**
os: 10.0.17763.1 (WinBuild.160101.0800)
PS file version: 10.0.17763.1 (WinBuild.160101.0800)

and

PS version: 6.2.0
PSReadline version: 2.0.0-beta4, **AppVeyor Build: 1.0.553**
os: 10.0.17763.1 (WinBuild.160101.0800)
PS file version: 6.2.0

Steps to reproduce or exception report

Enable PSReadLine vi-mode
While in insert-mode press Ctrl+[ and prior behavior was to change to command-mode
Currently, ^[ is rendered in the console and PSReadLine remains in insert-mode.

[gwojan]

So, just to throw another wrinkle, pressing Ctrl+[ in the PowerShell Integrated Console in VSCode, PowerShell Preview 2.0.2 works as expected.

PS version: 6.2.0
PSReadline version: 2.0.0-beta4, **AppVeyor Build: 1.0.553**
os: 10.0.17763.1 (WinBuild.160101.0800)
PS file version: 6.2.0

Keep in mind this IS NOT the PSReadLine included with the PowerShell Preview Extension -- it's the same version being used in other "terminals".

[daxian-dbw]

@gwojan Did Ctrl+[ ever work on Windows in the pwsh console with the VI mode?
Both 2.0.0-beta.3 and 2.0.0-beta.4 work as you expect (change to command mode) in pwsh on Linux, but on Windows, both don't work while the beta.4 PSReadLine renders ^[ (Ctrl+[ doesn't work in beta.2 either).

[gwojan]

@daxian-dbw yes, absolutely it worked on Windows PowerShell and pwsh.exe. As a matter of fact, it still works in the VSCode PowerShell Integrated Console just not the standard Windows Console.

[daxian-dbw]

@gwojan Then it may be a regression that happened way back ... I just tried with 2.0.0-beta.2, and it doesn't work. Which version did it work for you?

[gwojan]

@daxian-dbw The build that I pulled from AppVeyor (Build: 1.0.553) that broke things for me was documented in the original report.

If you'd like I can try to reinstall some of the older builds to identify a working one. 😃

[daxian-dbw]

Never mind if you cannot remember the working version that you used before. I will search back to find it out.

[gwojan]

@daxian-dbw The last working build I have from AppVeyor is 1.0.508 files dated 2/22/2019. The PSReadLine.psd1 has this tagged as beta3.

I also have:
Set-PSReadLineKeyHandler -Chord 'Ctrl+[' -Function ViCommandMode in my profile.

The next version that I still have on my system that actually breaks Ctrl+[ is 1.0.540 files dated 4/17/2019.

[gwojan]

@daxian-dbw I just pulled build 1.0.15 from AppVeyor and confirmed the Ctrl+[ binding works again in Windows PowerShell 5.1, PowerShell 6.2 and PowerShell 7. My fingers thank you immensely! 😀 👍

[daxian-dbw]

@gwojan glad it worked for you, but the PR is still in review and not merged yet, so let's keep this issue open for now.

[gwojan]

Thanks @daxian-dbw. 😄 I just noticed this also fixes another issue I was having and forgot to open an issue.

Set-PSReadLineKeyHandler -Key 'Ctrl+{' -Function DeleteLine

This now works like <ESC>S to clear the current line.