Windows – How to install the PowerShell Community Extensions (PSCX)

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Run regedit.exe and navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Console\TrueTypeFont.

Right-click in the panel on the right side and create a new string value. Name that value “0″ or “00″ or however many zeros you need to create a new key. That string’s value is the name of the font to add.

You can override the standard tab completion function with your own. In the newest version of PowerShell, that function is TabExpansion2. This modification of it appears to do what you want:

Function TabExpansion2 {
    [CmdletBinding(DefaultParameterSetName = 'ScriptInputSet')]
    Param(
        [Parameter(ParameterSetName = 'ScriptInputSet', Mandatory = $true, Position = 0)]
        [string] $inputScript,

        [Parameter(ParameterSetName = 'ScriptInputSet', Mandatory = $true, Position = 1)]
        [int] $cursorColumn,

        [Parameter(ParameterSetName = 'AstInputSet', Mandatory = $true, Position = 0)]
        [System.Management.Automation.Language.Ast] $ast,

        [Parameter(ParameterSetName = 'AstInputSet', Mandatory = $true, Position = 1)]
        [System.Management.Automation.Language.Token[]] $tokens,

        [Parameter(ParameterSetName = 'AstInputSet', Mandatory = $true, Position = 2)]
        [System.Management.Automation.Language.IScriptPosition] $positionOfCursor,

        [Parameter(ParameterSetName = 'ScriptInputSet', Position = 2)]
        [Parameter(ParameterSetName = 'AstInputSet', Position = 3)]
        [Hashtable] $options = $null
    )

    End
    {
        $source = $null
        if ($psCmdlet.ParameterSetName -eq 'ScriptInputSet')
        {
            $source = [System.Management.Automation.CommandCompletion]::CompleteInput(
                <#inputScript#>  $inputScript,
                <#cursorColumn#> $cursorColumn,
                <#options#>      $options)
        }
        else
        {
            $source = [System.Management.Automation.CommandCompletion]::CompleteInput(
                <#ast#>              $ast,
                <#tokens#>           $tokens,
                <#positionOfCursor#> $positionOfCursor,
                <#options#>          $options)
        }
        $field = [System.Management.Automation.CompletionResult].GetField('completionText', 'Instance, NonPublic')
        $source.CompletionMatches | % {
            If ($_.ResultType -eq 'Command' -and [io.file]::Exists($_.ToolTip)) {
                $field.SetValue($_, [io.path]::GetFileNameWithoutExtension($_.CompletionText))
            }
        }
        Return $source
    }    
}

I added the lines after the one that starts with $field; it goes through the default tab completion options and lops the extension off ones that appear to be from your PATH. I got the original source with this command:

(Get-Command 'TabExpansion2').ScriptBlock

If you put the new function in a .ps1 file and dot-execute that script (e.g. . .\tabnoext.ps1), it will become the tab completion handler for the current session. To load it every time you open a PowerShell window, just paste all that code into a PowerShell profile script.

If you're on an old version of PowerShell, you need to override the TabExpansion function, which just returns an array of strings.