Merge pull request #2811 from pdelvo/sa1642codeFixImprovement

Improve SA1642 to work better with single-line empty elements

Author: sharwell

StyleCop.Analyzers/StyleCop.Analyzers.CodeFixes/DocumentationRules/SA1642SA1643CodeFixProvider.cs

@@ -149,6 +149,14 @@ private static Task<Document> GetTransformedDocumentAsync(Document document, Syn
 
             var newContent = RemoveMalformattedStandardText(node.Content, typeDeclaration.Identifier, standardText[0], standardText[1], ref trailingString);
 
+            if (newContent.Count == 1 && newContent[0] is XmlTextSyntax xmlText)
+            {
+                if (string.IsNullOrWhiteSpace(xmlText.ToString()))
+                {
+                    newContent = default;
+                }
+            }
+
             var list = BuildStandardTextSyntaxList(typeDeclaration, newLineText, standardText[0], standardText[1] + trailingString);
             newContent = newContent.InsertRange(0, list);
 

StyleCop.Analyzers/StyleCop.Analyzers.Test/DocumentationRules/SA1642UnitTests.cs

@@ -940,7 +940,7 @@ public ClassName()
     public class ClassName
     {{
         /// <summary>
-        /// Initializes a new instance of the <see cref=""ClassName""/> class.{emptyContent}</summary>
+        /// Initializes a new instance of the <see cref=""ClassName""/> class.</summary>
         public ClassName()
         {{
         }}