Powershell title updater

prompt.ps1

function Prompt {
    $p = Get-Location
    while ($p) {
        if (Test-Path "$p\.git") { break }
        if (Test-Path "$p\pyproject.toml") { break }
        if (Test-Path "$p\setup.py") { break }
        $p = Split-Path -Parent $p
    }
    if ($p) {
        $n1 = Split-Path -Leaf $p
        $n2 = Split-Path -Leaf (Get-Location)
        if ($n1 -ne $n2) {
            $host.ui.RawUI.WindowTitle = "<$n1>\$n2 - Powershell"
        } else {
            $host.ui.RawUI.WindowTitle = "<$n1> - Powershell"
        }
    } else {
        $p = Get-Location
        $n1 = Split-Path -Leaf $p
        $p = Split-Path -Parent $p
        while ($p -and ($n1.Length -lt 16)) {
            $n1 = Join-Path (Split-Path -Leaf $p) $n1
            $p = Split-Path -Parent $p
        }
        $n2 = Get-Location
        if ($n1 -ne $n2) {
            $host.ui.RawUI.WindowTitle = "...\$n1 ($n2) - Powershell"
        } else {
            $host.ui.RawUI.WindowTitle = "$n1 - Powershell"
        }
    }
    return "$(Get-Location)> "
}