Function Find-TODOs {
    $lastFileName = ''
    (hg diff | ForEach-Object {
        If ($_.StartsWith('+++ ')) {
            $lastFileName = $_.TrimStart('+++ b')
        }
        If ($_.StartsWith('+') -And $_ -Like '*TODO:*' -And $_ -NotLike '*TODO: Resource*') {
            If ($lastFileName -ne '') {
                Write-Host $lastFileName
                $lastFileName = ''
            }
            Write-Host $_ -ForegroundColor Green
        }
    })
}

Set-Alias todo Find-TODOs