Custom Powershell profile that uses both posh-git and posh-hg

Microsoft.Powershell_Profile.ps1

$myDir = Split-Path -Parent $MyInvocation.MyCommand.Path
Import-Module "$mydir\posh-hg\posh-hg"
Import-Module "$mydir\posh-git\posh-git"

function prompt {  
  write-host "$pwd" -NoNewLine -foregroundcolor green

  $Global:GitStatus = Get-GitStatus
  Write-GitStatus $GitStatus
  Write-HgStatus
    
  write-host "»" -NoNewLine -ForegroundColor green
  $Host.UI.RawUI.WindowTitle = $pwd
  return ' '
}

if(-not (Test-Path Function:\DefaultTabExpansion)) {
    Rename-Item Function:\TabExpansion DefaultTabExpansion
}

function TabExpansion($line, $lastWord) {
  $LineBlocks = [regex]::Split($line, '[|;]')
  $lastBlock = $LineBlocks[-1] 
 
  switch -regex ($lastBlock) {
    '(git|tgit) (.*)' { gitTabExpansion($lastBlock) }
    '(hg|thg) (.*)' { HgTabExpansion($lastBlock) }
     # Fall back on existing tab expansion
     default { DefaultTabExpansion $line $lastWord }
  }
}