PowerShell functions to automate Git `safe.directory` submission

GitSafeDirectoryTools.ps1

function Find-GitDirectory {
    param (
        [string[]] $Path = '.',

        [switch] $Recurse
    )

    $gciParams = @{
        Recurse = $Recurse
        Force = $true
    }
    foreach ($dir in $Path) {
        Get-Item $dir | Get-ChildItem -Include .git @gciParams | ForEach-Object { Get-Item $_.Parent }
    }
}

# to use:
# Find-GitDirectory | Add-GitSafeDirectory
filter Add-GitSafeDirectory {
    begin {
        $ExistingSafeDirectories = git config --global --get-all safe.directory
    }
    process {
        $PathToAdd = $(
                if (!$_.PSDrive.Root) {
                    "%(prefix)/$($_.FullName)"
                } elseif (!$_.PSDrive.DisplayRoot) {
                    $_.FullName
                } else {
                    "%(prefix)/$(Join-Path $_.PSDrive.DisplayRoot $_.FullName.Substring($_.Root.FullName.Length))"
            }).Replace([char]'\', [char]'/')
        if ($PathToAdd -notin $ExistingSafeDirectories) {
            git config --global --add safe.directory $PathToAdd
        }
    }
}