From e2fe868454f84c78b67cc26aa04c328854f31d91 Mon Sep 17 00:00:00 2001
From: Yorick Barbanneau <ephase@xieme-art.org>
Date: Mon, 16 Apr 2018 16:29:55 +0200
Subject: [PATCH] Test if registry key value is null of empty in AddRegKey()

---
 cleanW10.ps1 | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/cleanW10.ps1 b/cleanW10.ps1
index 9f1c8a4..c5234a7 100755
--- a/cleanW10.ps1
+++ b/cleanW10.ps1
@@ -225,7 +225,7 @@ function AddRegKey {
             return
     }
     if ( -not $params.ContainsKey('value') ) {
-        $params.value = ""
+        $params.value = $null
     }
     if ( -not $params.ContainsKey('type') -or $params.type -eq "" ){ $params.type="DWord" }
 
@@ -266,9 +266,9 @@ function AddRegKey {
 
     # Test if the key already exist
     try {
-        $current_value = Get-ItemPropertyValue -Path $params.path -Name $params.key
-        if ( -not $current_value ) { $current_value = "" }
-        if ( $current_value -eq $params.value ) {
+        $current_value = (Get-ItemPropertyValue -Path $params.path -Name $params.key)
+        #current_value and params.value both empty need a special condition
+        if ( ( [string]::IsNullOrWhitespace($current_value) -and [string]::IsNullOrWhitespace($params.value) ) -or ($current_value -eq $params.value) ) {
             Write-Host -ForegroundColor Yellow "Already done"
             return
         }