Can't declare Ctrl+Question key binding

[rkeithhill]

If I attempt this I get the following error:

Set-PSReadlineKeyHandler : Cannot process argument transformation on parameter 'Key'. Unrecognized key 'question'.
Please use a character literal or a well-known key name from the System.ConsoleKey enumeration.
At C:\Users\Keith\Documents\WindowsPowerShell\profile.ps1:9 char:35

• Set-PSReadlineKeyHandler -Key Ctrl+Question -BriefDescription GetKeyHandlers ...
  

•                               ~~~~~~~~~~~~~
  

  • CategoryInfo : InvalidData: (:) [Set-PSReadlineKeyHandler], ParameterBindingArgumentTransformationExcep
    tion
  • FullyQualifiedErrorId : ParameterArgumentTransformationError,PSConsoleUtilities.SetKeyHandlerCommand

This is my handler decl:

Set-PSReadlineKeyHandler -Key Ctrl+Question -BriefDescription GetKeyHandlers -Handler { 
    [PSConsoleUtilities.PSConsoleReadLine]::GetKeyHandlers()
}

[cbadke]

You can but you want Ctrl-? or more likely Ctrl-/

Set-PSReadlineKeyHandler -Key Ctrl+/ -ScriptBlock {
    [PSConsoleUtilities.PSConsoleReadline]::PossibleCompletions()
}

[rkeithhill]

Yes, Ctrl+/ makes more sense (don't want to have to press Shift). But for help, what I was thinking is it would be the output of this command:

[PSConsoleUtilities.PSConsoleReadLine]::GetKeyHandlers()

Plus some general text info on how to use PSReadLine. Like if you're using less on a file and you press 'h' you get help on how to use less.

[cbadke]

So would the remainder of your request be a duplicate of #24?

[rkeithhill]

Well except that the keybinding Ctrl+/ doesn't work with the latest drop.

[cbadke]

Seems to work for me. The code you posted in the original post doesn't work because the -Handler option does not exist. Does this not work for you?

Set-PSReadlineKeyHandler -Key Ctrl+/ -ScriptBlock {
    [PSConsoleUtilities.PSConsoleReadline]::PossibleCompletions()
}

Note that with this binding Ctrl+/ won't do anything unless you have enter something that can potentially be completed.

[rkeithhill]

OK apparently the keybinding works but just not for GetKeyHandlers():

Set-PSReadlineKeyHandler -Key Ctrl+/ -ScriptBlock {
    [PSConsoleUtilities.PSConsoleReadline]::GetKeyHandlers()
}

Weird.

[lzybkr]

Not weird, it's by design. GetKeyHandlers doesn't have any side effects, so if it was bound to a key, it wouldn't be useful.

I do plan on adding what I think you want.

[lzybkr]

This is now addressed.

Get-PSReadlineKeyHandler should now look better and match what you would use with Set-PSReadlineKeyHandler.
New functions:

• WhatIsKey (bound to Ctrl+?) will read the next key and tell you what it is bound to
• ShowKeyBindings (bound to Ctrl+Alt+?) will output all of the bound keys like Get-PSReadlineKeyHandler, but it preserves the current line.

The actual commits:

2553fa3
653b492
1e2dee3