gistfile1.txt

function Get-GitBranchNameWithStatusIndicator {
  $statusOutput = Invoke-Expression 'git status 2>$null'
  if (!$statusOutput) { return }
  $branch = $statusOutput[0]
  if ($branch -eq "# Not currently on any branch.") {
    $branch = "No branch"
  } else {
    $branch =  $branch.SubString("# On branch ".Length) 
  }
  $statusSummary = $statusOutput[-1]
  if ($statusSummary -eq "nothing to commit (working directory clean)") {
    $statusIndicator = "" 
  } else {
    $statusIndicator = "*"
  }
  return $branch + $statusIndicator
}

function prompt {
  $location = (Get-Location).ToString()
  $shortLocation = $location.Replace($HOME, "~")
  $gitStatus = Get-GitBranchNameWithStatusIndicator
  Write-Host ("PS " + $shortLocation) -nonewline
  $host.ui.rawui.WindowTitle = $location
  if ($gitStatus) {
    Write-Host (" [" + $gitStatus +"]") -nonewline -foregroundcolor Gray
    $host.ui.rawui.WindowTitle += (" [" + $gitStatus +"]")
  }
  Write-Host (">") -nonewline
  $host.ui.rawui.WindowTitle += " - PowerShell"
  return " "
}