From a67f3474efa147cd6c8a4a8cf1ecfc8f1d78df19 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 28 Oct 2026 21:30:19 +0000
Subject: [PATCH 1/3] Initial plan


From 18c85ec5e7c87bab6f426bb4e6f105a88923b37d Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 28 Oct 2026 21:34:22 +0000
Subject: [PATCH 2/3] Reject ampersand-separated DSC body pairing

Co-authored-by: bergmeister <9250262+bergmeister@users.noreply.github.com>
---
 Rules/AvoidAlias.cs                   | 8 ++++----
 Tests/Rules/AvoidUsingAlias.tests.ps1 | 6 ++++--
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/Rules/AvoidAlias.cs b/Rules/AvoidAlias.cs
index 7b8a46c2f..8e10301fd 100644
--- a/Rules/AvoidAlias.cs
+++ b/Rules/AvoidAlias.cs
@@ -348,7 +348,7 @@ private ScriptBlockExpressionAst GetDscResourceBody(CommandAst cmdAst)
                         && bodyPipeline.PipelineElements.Count == 1
                         && bodyPipeline.PipelineElements[0] is CommandExpressionAst bodyExpression)
                     {
-                        if (HasSemicolonSeparator(pipeline, bodyPipeline)
+                        if (HasStatementSeparator(pipeline, bodyPipeline)
                             || bodyExpression.Redirections.Count != 0)
                         {
                             return null;
@@ -364,7 +364,7 @@ private ScriptBlockExpressionAst GetDscResourceBody(CommandAst cmdAst)
             return null;
         }
 
-        private bool HasSemicolonSeparator(Ast statement, Ast nextStatement)
+        private bool HasStatementSeparator(Ast statement, Ast nextStatement)
         {
             int separatorStart = statement.Extent.EndOffset;
             int separatorLength = nextStatement.Extent.StartOffset - separatorStart;
@@ -375,13 +375,13 @@ private bool HasSemicolonSeparator(Ast statement, Ast nextStatement)
 
             string script = statement.Extent.EndScriptPosition.GetFullScript();
             string separator = script.Substring(separatorStart, separatorLength);
-            if (separator.IndexOf(';') < 0)
+            if (separator.IndexOf(';') < 0 && separator.IndexOf('&') < 0)
             {
                 return false;
             }
 
             Parser.ParseInput(separator, out Token[] tokens, out ParseError[] errors);
-            return tokens.Any(token => token.Kind == TokenKind.Semi);
+            return tokens.Any(token => token.Kind == TokenKind.Semi || token.Kind == TokenKind.Ampersand);
         }
 
         /// <summary>
diff --git a/Tests/Rules/AvoidUsingAlias.tests.ps1 b/Tests/Rules/AvoidUsingAlias.tests.ps1
index 731dc4137..1c2470447 100644
--- a/Tests/Rules/AvoidUsingAlias.tests.ps1
+++ b/Tests/Rules/AvoidUsingAlias.tests.ps1
@@ -233,12 +233,14 @@ Configuration PackageTest {
             }
         }
 
-        It "does not pair following-line blocks with commands when the block has redirections or a statement terminator intervenes" {
+        It "does not pair following-line blocks with commands when the block has redirections or a statement separator intervenes" {
             $target = @'
 {
     gci .
     {} > $null
     gci .; {}
+    gci . &
+    {}
 }
 '@
             $ast = [System.Management.Automation.Language.Parser]::ParseInput($target, [ref]$null, [ref]$null)
@@ -250,7 +252,7 @@ Configuration PackageTest {
 
             $violations = @($rule.AnalyzeScript($configuration, $null))
 
-            $violations.Count | Should -Be 2
+            $violations.Count | Should -Be 3
             $violations | ForEach-Object {
                 $_.Extent.Text | Should -Be 'gci'
                 $_.SuggestedCorrections[0].Text | Should -Be 'Get-ChildItem'

From cb23c461315faeca651bcf5c9584d53f3d5f74ae Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 28 Oct 2026 21:51:34 +0000
Subject: [PATCH 3/3] Fix DSC separator detection across PowerShell versions

Co-authored-by: bergmeister <9250262+bergmeister@users.noreply.github.com>
---
 Rules/AvoidAlias.cs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Rules/AvoidAlias.cs b/Rules/AvoidAlias.cs
index 8e10301fd..f40d961f1 100644
--- a/Rules/AvoidAlias.cs
+++ b/Rules/AvoidAlias.cs
@@ -348,7 +348,7 @@ private ScriptBlockExpressionAst GetDscResourceBody(CommandAst cmdAst)
                         && bodyPipeline.PipelineElements.Count == 1
                         && bodyPipeline.PipelineElements[0] is CommandExpressionAst bodyExpression)
                     {
-                        if (HasStatementSeparator(pipeline, bodyPipeline)
+                        if (HasStatementSeparator(cmdAst, bodyPipeline)
                             || bodyExpression.Redirections.Count != 0)
                         {
                             return null;
@@ -364,9 +364,9 @@ private ScriptBlockExpressionAst GetDscResourceBody(CommandAst cmdAst)
             return null;
         }
 
-        private bool HasStatementSeparator(Ast statement, Ast nextStatement)
+        private bool HasStatementSeparator(CommandAst statement, Ast nextStatement)
         {
-            int separatorStart = statement.Extent.EndOffset;
+            int separatorStart = statement.CommandElements[statement.CommandElements.Count - 1].Extent.EndOffset;
             int separatorLength = nextStatement.Extent.StartOffset - separatorStart;
             if (separatorLength <= 0)
             {