Set-PSReadline Key Handler

Module:: PSReadLine

Binds keys to user-defined or PSReadline-provided key handlers.

Syntax

Set-PSReadlineKeyHandler
   [-ScriptBlock] <ScriptBlock>
   [-BriefDescription <String>]
   [-Description <String>]
   [-Chord] <String[]>
   [-ViMode <ViMode>]
   [<CommonParameters>]

Set-PSReadlineKeyHandler
   [-Chord] <String[]>
   [-ViMode <ViMode>]
   [-Function] <String>
   [<CommonParameters>]

Description

The Set-PSReadlineKeyHandler cmdlet customizes the result when a particular key or sequence of keys is pressed while PSReadline is reading input. By using user-defined key bindings, you can do almost anything that is possible from within a Windows PowerShell script. Typically, you might modify the command line in a new way, but because the handlers are just Windows PowerShell scripts, you can do interesting things such as change directories or open applications.

Examples

Example 1: Bind the arrow key to a function

PS C:\> Set-PSReadlineKeyHandler -Chord UpArrow -Function HistorySearchBackward

This command binds the up arrow key to the function HistorySearchBackward, which uses the currently-entered command line as the start of the search string when it is searching through command history.

Example 2: Bind a key to a script block

Set-PSReadlineKeyHandler -Chord Ctrl+Shift+B -ScriptBlock {

	[Microsoft.PowerShell.PSConsoleReadLine]::RevertLine()

	[Microsoft.PowerShell.PSConsoleReadLine]::Insert('build')

	[Microsoft.PowerShell.PSConsoleReadLine]::AcceptLine()

}

This command binds the key Ctrl+Shift+B to a script block that clears the line, inserts the word build, and then accepts the line. The example shows how a single key can be used to run a command.

Required Parameters

-Chord

Specifies an array of keys or sequences of keys to be bound to a function or script block. Use a single string to specify a single binding. If the binding is a sequence of keys, separate the keys by a comma, as in the following example:

"Ctrl+X,Ctrl+L"

This parameter accepts multiple strings. Each string is a separate binding, not a sequence of keys for a single binding.

Type:	String[]
Aliases:	Key
Position:	0
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

-Function

Specifies the name of an existing key handler provided by PSReadline. This parameter lets you rebind existing key bindings, or bind a handler that is provided by PSReadline and is currently unbound. By adding the ScriptBlock parameter, you can get equivalent functionality by calling the method directly from the script block. This parameter is the preferred method, however, because the results make it easier to determine which functions are bound and unbound. To see a complete list of these values, type Get-Help Set-PSReadlineKeyHandler -Full .

Type:	String
Parameter Sets:	Abort, AcceptAndGetNext, AcceptLine, AddLine, BackwardChar, BackwardDeleteChar, BackwardDeleteLine, BackwardDeleteWord, BackwardKillLine, BackwardKillWord, BackwardWord, BeginningOfHistory, BeginningOfLine, CancelLine, CaptureScreen, CharacterSearch, CharacterSearchBackward, ClearHistory, ClearScreen, Complete, Copy, CopyOrCancelLine, Cut, DeleteChar, DeleteCharOrExit, DeleteEndOfWord, DeleteLine, DeleteLineToFirstChar, DeleteToEnd, DeleteWord, DigitArgument, EndOfHistory, EndOfLine, ExchangePointAndMark, ForwardChar, ForwardDeleteLine, ForwardSearchHistory, ForwardWord, GotoBrace, GotoColumn, GotoFirstNonBlankOfLine, HistorySearchBackward, HistorySearchForward, InsertLineAbove, InsertLineBelow, InvertCase, InvokePrompt, KillLine, KillRegion, KillWord, MenuComplete, MoveToEndOfLine, NextHistory, NextLine, NextWord, NextWordEnd, Paste, PasteAfter, PasteBefore, PossibleCompletions, PrependAndAccept, PreviousHistory, PreviousLine, Redo, RepeatLastCharSearch, RepeatLastCharSearchBackwards, RepeatLastCommand, RepeatSearch, RepeatSearchBackward, ReverseSearchHistory, RevertLine, ScrollDisplayDown, ScrollDisplayDownLine, ScrollDisplayToCursor, ScrollDisplayTop, ScrollDisplayUp, ScrollDisplayUpLine, SearchChar, SearchCharBackward, SearchCharBackwardWithBackoff, SearchCharWithBackoff, SearchForward, SelectAll, SelectBackwardChar, SelectBackwardsLine, SelectBackwardWord, SelectForwardChar, SelectForwardWord, SelectLine, SelectNextWord, SelectShellBackwardWord, SelectShellForwardWord, SelectShellNextWord, SelfInsert, SetMark, ShellBackwardKillWord, ShellBackwardWord, ShellForwardWord, ShellKillWord, ShellNextWord, ShowKeyBindings, SwapCharacters, TabCompleteNext, TabCompletePrevious, Undo, UndoAll, UnixWordRubout, ValidateAndAcceptLine, ViAcceptLine, ViAcceptLineOrExit, ViAppendLine, ViBackwardDeleteGlob, ViBackwardGlob, ViBackwardWord, ViCommandMode, ViDeleteBrace, ViDeleteEndOfGlob, ViDeleteGlob, ViDigitArgumentInChord, ViEditVisually, ViExit, ViGotoBrace, ViInsertAtBegining, ViInsertAtEnd, ViInsertLine, ViInsertMode, ViInsertWithAppend, ViInsertWithDelete, ViJoinLines, ViNextWord, ViSearchHistoryBackward, ViTabCompleteNext, ViTabCompletePrevious, ViYankBeginningOfLine, ViYankEndOfGlob, ViYankEndOfWord, ViYankLeft, ViYankLine, ViYankNextGlob, ViYankNextWord, ViYankPercent, ViYankPreviousGlob, ViYankPreviousWord, ViYankRight, ViYankToEndOfLine, ViYankToFirstChar, WhatIsKey, Yank, YankLastArg, YankNthArg, YankPop
Position:	1
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

-ScriptBlock

Specifies a script block value that is called when the chord is entered. The script block is passed one, or sometimes two, arguments. The first argument is the key pressed, a ConsoleKeyInfo object.. The second argument could be any object depending on the context.

Type:	ScriptBlock
Position:	1
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Optional Parameters

-BriefDescription

A brief description of the key binding. You can get this from the output of the Get-PSReadlineKeyHandler cmdlet.

Type:	String
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

-Description

Specifies a more detailed description of the key binding that is visible in the output of the Get-PSReadlineKeyHandler cmdlet.

Type:	String
Aliases:	LongDescription
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

-ViMode

Type:	ViMode
Parameter Sets:	Insert, Command
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False

Inputs

None

You cannot pipe objects to this cmdlet.