Exclude trailing inline comments from comment runs (#2255)

Add a regression test for standalone comments following trailing inline comments.\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Co-authored-by: bergmeister <9250262+bergmeister@users.noreply.github.com>

Author: bergmeister

Rules/UseConsistentIndentation.cs

@@ -426,6 +426,7 @@ private static int GetCommentRunIndentationOffset(
                 if (precedingIndex < 0 ||
                     tokens[precedingIndex].Kind != TokenKind.Comment ||
                     HasCodeAfterCommentOnSameLine(tokens, precedingIndex) ||
+                    HasCodeBeforeCommentOnSameLine(tokens, precedingIndex) ||
                     tokens[precedingIndex].Extent.EndLineNumber != currentLine - 1)
                 {
                     break;
@@ -520,6 +521,23 @@ private static bool HasCodeAfterCommentOnSameLine(Token[] tokens, int commentInd
                 nextToken.Extent.StartLineNumber <= commentGroupEndLine;
         }
 
+        private static bool HasCodeBeforeCommentOnSameLine(Token[] tokens, int commentIndex)
+        {
+            int commentStartLine = tokens[commentIndex].Extent.StartLineNumber;
+            int precedingIndex = commentIndex - 1;
+            while (precedingIndex >= 0 &&
+                tokens[precedingIndex].Kind == TokenKind.Comment &&
+                tokens[precedingIndex].Extent.EndLineNumber >= commentStartLine)
+            {
+                precedingIndex--;
+            }
+
+            return precedingIndex >= 0 &&
+                tokens[precedingIndex].Kind != TokenKind.NewLine &&
+                tokens[precedingIndex].Kind != TokenKind.LineContinuation &&
+                tokens[precedingIndex].Extent.EndLineNumber == commentStartLine;
+        }
+
         /// <summary>
         /// Scans forward from the current opener to the end of the line.
         /// Returns true if there is at least one unclosed opener when

Tests/Rules/UseConsistentIndentation.tests.ps1

@@ -408,6 +408,25 @@ if ($a) {
                 Should -Be $expectedScriptDefinition
         }
 
+        It 'Should not include a trailing inline comment in the following comment run' {
+            $scriptDefinition = @'
+function test {
+    $value = 1 # trailing
+        # standalone
+}
+'@
+            $expectedScriptDefinition = @'
+function test {
+    $value = 1 # trailing
+    # standalone
+}
+'@
+            $settings.Rules.PSUseConsistentIndentation.PipelineIndentation = 'NoIndentation'
+
+            Invoke-Formatter -ScriptDefinition $scriptDefinition -Settings $settings |
+                Should -Be $expectedScriptDefinition
+        }
+
         It 'Should not include a multiline block-comment group followed by code in a comment run' {
             $scriptDefinition = @'
 if ($a) {