U+0085 not recognised as a newline character in CSharpCodeGenerator.cs (#1740)

src/libraries/System.CodeDom/src/Microsoft/CSharp/CSharpCodeGenerator.cs

@@ -125,6 +125,7 @@ private string QuoteSnippetStringCStyle(string value)
                         break;
                     case '\u2028':
                     case '\u2029':
+                    case '\u0085':
                         AppendEscapedChar(b, value[i]);
                         break;
 

src/libraries/System.CodeDom/tests/System/CodeDom/Compiler/CSharpCodeGenerationTests.cs

@@ -1066,7 +1066,7 @@ public void CharEncoding()
 
             AssertEqual(main,
                  "public static void Main() { " +
-                 "     System.Console.WriteLine(\"\u1234 \u4567 \uABCD \\r \\n \\t \\\\ \\\" \\' \\0 \\u2028 \\u2029 \u0084 \u0085 \U00010F00\"); " +
+                 "     System.Console.WriteLine(\"\u1234 \u4567 \uABCD \\r \\n \\t \\\\ \\\" \\' \\0 \\u2028 \\u2029 \u0084 \\u0085 \U00010F00\"); " +
                  "}");
         }
 
@@ -3449,5 +3449,21 @@ public static void Main()
                       }
                   }");
         }
+
+        [Fact]
+        public void SpecialNewLineCharactersInStringsDoneCorrectly()
+        {
+            var cd = new CodeTypeDeclaration("ClassWithStringFields") { IsClass = true };
+
+            var field = new CodeMemberField("System.String", "StringWithSpecialNewLines");
+            field.Attributes = MemberAttributes.Public | MemberAttributes.Static;
+            field.InitExpression = new CodePrimitiveExpression("\u0085\u2028\u2029");
+            cd.Members.Add(field);
+
+            AssertEqual(cd,
+                @"public class ClassWithStringFields {
+                      public static string StringWithSpecialNewLines = ""\u0085\u2028\u2029"";
+                  }");
+        }
     }
 }