Case sensitive cd/set-location in powershell 3

sensitiveCd.ps1

function GetCaseSensitivePath{
    param($pathName)
    $pathExists = Test-Path($pathName)
    if (-Not $pathExists){
        return $pathName
    }

    $directoryInfo = New-Object IO.DirectoryInfo($pathName)
    
    if ($directoryInfo.Parent -ne $null){
        $parentPath = GetCaseSensitivePath($directoryInfo.Parent.FullName)
        $childPath = $directoryInfo.Parent.GetFileSystemInfos($directoryInfo.Name)[0].Name
        return(Join-Path $parentPath $childpath -resolv)
    }else{
        return $directoryInfo.Name
    }
}

$executionContext.SessionState.InvokeCommand.PostCommandLookupAction = {
    param($CommandName, $CommandLookupEventArgs)
    #Only hook cd
    if($CommandLookupEventArgs.CommandOrigin -eq "Runspace" -and $CommandName -eq "cd"){
        $CommandLookupEventArgs.CommandScriptBlock = {
            $x = Resolve-Path($args)
            $x = GetCaseSensitivePath($x)
            Set-Location $x
        }
        $CommandLookupEventArgs.StopSearch = $true
    }
}

There are a few problems with this.

Line 26 - this assume cd is aliased to Set-Location. If you use PowerShell community extensions, cd is aliased to Set-LocationEx.

Line 24 and 25 - mostly a nit, but you shouldn't use parens. It's harmless with one argument, but it confuses people if you use parens because they think they need parens and commas for multiple arguments but you use spaces to separate arguments to PowerShell functions.