Fixes rename attribute bug

src/EditorFeatures/Test2/Rename/InlineRenameTests.vb

@@ -2473,5 +2473,59 @@ class [|C|]
                     </Workspace>, host:=host, renameTo:="MyNewProperty")
             End Using
         End Sub
+
+        <WpfTheory>
+        <CombinatorialData, Trait(Traits.Feature, Traits.Features.Rename)>
+        Public Sub RenameClassWithAttributeName(host As RenameTestHost)
+            Using result = RenameEngineResult.Create(_outputHelper,
+                    <Workspace>
+                        <Project Language="C#" CommonReferences="true">
+                            <Document>
+                                <![CDATA[
+                                public class [|$$MyClassAttribute|] : System.Attribute
+                                {
+                                    public [|MyClassAttribute|]()
+                                    {
+
+                                    }
+                                }
+                            ']]>
+                            </Document>
+                        </Project>
+                    </Workspace>, host:=host, renameTo:="MyClassAttribute2")
+            End Using
+        End Sub
+
+        <WpfTheory>
+        <CombinatorialData, Trait(Traits.Feature, Traits.Features.Rename)>
+        Public Async Function RenameClassWithAttributeName2(host As RenameTestHost) As Task
+            Using workspace = CreateWorkspaceWithWaiter(
+                    <Workspace>
+                        <Project Language="C#" CommonReferences="true" LanguageVersion="preview">
+                            <Document>
+                                public class [|MyClass$$Attribute|] : System.Attribute
+                                {
+                                    public [|MyClassAttribute|]()
+                                    {
+
+                                    }
+                                }
+                            </Document>
+                        </Project>
+                    </Workspace>, host)
+
+                Dim session = StartSession(workspace)
+
+                ' Type a bit in the file
+                Dim caretPosition = workspace.Documents.Single(Function(d) d.CursorPosition.HasValue).CursorPosition.Value
+                Dim textBuffer = workspace.Documents.Single().GetTextBuffer()
+
+                textBuffer.Insert(caretPosition, "2")
+
+                Await session.CommitAsync(previewChanges:=False, editorOperationContext:=Nothing)
+
+                Await VerifyTagsAreCorrect(workspace)
+            End Using
+        End Function
     End Class
 End Namespace

src/VisualStudio/Core/Def/InlineRename/InlineRenameUndoManager.cs

@@ -15,6 +15,9 @@
 using Microsoft.CodeAnalysis.ErrorReporting;
 using Microsoft.CodeAnalysis.Host;
 using Microsoft.CodeAnalysis.Host.Mef;
+using Microsoft.CodeAnalysis.LanguageService;
+using Microsoft.CodeAnalysis.Shared.Extensions;
+using Microsoft.CodeAnalysis.Text;
 using Microsoft.VisualStudio.Editor;
 using Microsoft.VisualStudio.OLE.Interop;
 using Microsoft.VisualStudio.Text;
@@ -171,7 +174,14 @@ public void ApplyCurrentState(ITextBuffer subjectBuffer, object propagateSpansEd
                 return;
             }
 
-            ApplyReplacementText(subjectBuffer, bufferUndoState.TextUndoHistory, propagateSpansEditTag, spans, this.currentState.ReplacementText);
+            var document = subjectBuffer.CurrentSnapshot.GetOpenDocumentInCurrentContextWithChanges();
+            var isCaseSensitive = document?.GetLanguageService<ISyntaxFactsService>()?.IsCaseSensitive ?? true;
+
+            // This is where we apply the replacement text to each inline preview in the buffer.
+            // Needs to remove the "Attribute" suffix, since the inline preview does not include the "Attribute" suffix in the replacement span,
+            // so that the user does not see the suffix twice.
+            ApplyReplacementText(subjectBuffer, bufferUndoState.TextUndoHistory, propagateSpansEditTag, spans,
+                currentState.ReplacementText.GetWithoutAttributeSuffix(isCaseSensitive) ?? currentState.ReplacementText);
 
             // Here we create the descriptions for the redo list dropdown.
             var undoManager = bufferUndoState.UndoManager;