Converted to be a PS module.

As a module, the idea is that it should be more portable and...
well, modular. Also changed to use newly added Test-LocalOrParentPath
to find the .git directory instead of asking git. It performs faster,
at least on my machine.

GitUtils.ps1

@@ -1,12 +1,8 @@
 # Inspired by Mark Embling
 # http://www.markembling.info/view/my-ideal-powershell-prompt-with-git-integration
 
-. .\Utils.ps1
-
 function Get-GitDirectory {
-    Coalesce-Args `
-        (Get-Item '.\.git' -Force 2>$null).FullName `
-        { git rev-parse --git-dir 2>$null }
+    Test-LocalOrParentPath .git
 }
 
 function Get-GitBranch($gitDir = $(Get-GitDirectory)) {

Utils.ps1

@@ -12,4 +12,16 @@ function Coalesce-Args {
     }
     $result
 }
-Set-Alias ?? Coalesce-Args
+
+Remove-Item alias:/`?`? -Force
+Set-Alias ?? Coalesce-Args -Force
+
+function Test-LocalOrParentPath($path) {
+    $done = $false
+    do {
+        if (Test-Path $path) { return $true }
+        if (Test-Path ..) { return $false }
+        $path = "..\$path"
+    } while (!$done)
+    return $false
+}

posh-git.psm1

@@ -0,0 +1,13 @@
+Push-Location $psScriptRoot
+. ./Utils.ps1
+. ./GitUtils.ps1
+. ./GitPrompt.ps1
+. ./GitTabExpansion.ps1
+Pop-Location
+
+Export-ModuleMember -Function @(
+        'Write-GitStatus', 
+        'Get-GitStatus', 
+        'Enable-GitColors', 
+        'Get-GitDirectory',
+        'GitTabExpansion')

profile.example.ps1

@@ -1,13 +1,4 @@
-Push-Location (Split-Path -Path $MyInvocation.MyCommand.Definition -Parent)
-
-# Git utils
-. ./GitUtils.ps1
-. ./GitPrompt.ps1
-
-# Use Git tab expansion
-. ./GitTabExpansion.ps1
-
-Pop-Location
+Import-Module posh-git
 
 # Set up a simple prompt, adding the git prompt parts inside git repos
 function prompt {
@@ -37,5 +28,3 @@ function TabExpansion($line, $lastWord) {
 }
 
 Enable-GitColors
-
-Pop-Location