Added trim for each line

src/Workspaces/Core/Portable/Shared/Utilities/DocumentationComment.cs

@@ -3,6 +3,7 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.Immutable;
+using System.Linq;
 using System.Xml;
 using XmlNames = Roslyn.Utilities.DocumentationCommentXmlNames;
 
@@ -154,6 +155,11 @@ private static void ParseCallback(XmlReader reader, CommentBuilder builder)
                 builder.ParseCallback(reader);
             }
 
+            private string TrimEachLine(string text)
+            {
+                return string.Join(Environment.NewLine, text.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries).Select(i => i.Trim()));
+            }
+
             private void ParseCallback(XmlReader reader)
             {
                 if (reader.NodeType == XmlNodeType.Element)
@@ -161,19 +167,19 @@ private void ParseCallback(XmlReader reader)
                     string localName = reader.LocalName;
                     if (XmlNames.ElementEquals(localName, XmlNames.ExampleElementName) && _comment.ExampleText == null)
                     {
-                        _comment.ExampleText = reader.ReadInnerXml().Trim(); // TODO: trim each line
+                        _comment.ExampleText = TrimEachLine(reader.ReadInnerXml());
                     }
                     else if (XmlNames.ElementEquals(localName, XmlNames.SummaryElementName) && _comment.SummaryText == null)
                     {
-                        _comment.SummaryText = reader.ReadInnerXml().Trim(); // TODO: trim each line
+                        _comment.SummaryText = TrimEachLine(reader.ReadInnerXml());
                     }
                     else if (XmlNames.ElementEquals(localName, XmlNames.ReturnsElementName) && _comment.ReturnsText == null)
                     {
-                        _comment.ReturnsText = reader.ReadInnerXml().Trim(); // TODO: trim each line
+                        _comment.ReturnsText = TrimEachLine(reader.ReadInnerXml());
                     }
                     else if (XmlNames.ElementEquals(localName, XmlNames.RemarksElementName) && _comment.RemarksText == null)
                     {
-                        _comment.RemarksText = reader.ReadInnerXml().Trim(); // TODO: trim each line
+                        _comment.RemarksText = TrimEachLine(reader.ReadInnerXml());
                     }
                     else if (XmlNames.ElementEquals(localName, XmlNames.ParameterElementName))
                     {
@@ -183,7 +189,7 @@ private void ParseCallback(XmlReader reader)
                         if (!string.IsNullOrWhiteSpace(name) && !_comment._parameterTexts.ContainsKey(name))
                         {
                             (_parameterNamesBuilder ?? (_parameterNamesBuilder = ImmutableArray.CreateBuilder<string>())).Add(name);
-                            _comment._parameterTexts.Add(name, paramText.Trim()); // TODO: trim each line
+                            _comment._parameterTexts.Add(name, TrimEachLine(paramText));
                         }
                     }
                     else if (XmlNames.ElementEquals(localName, XmlNames.TypeParameterElementName))
@@ -194,7 +200,7 @@ private void ParseCallback(XmlReader reader)
                         if (!string.IsNullOrWhiteSpace(name) && !_comment._typeParameterTexts.ContainsKey(name))
                         {
                             (_typeParameterNamesBuilder ?? (_typeParameterNamesBuilder = ImmutableArray.CreateBuilder<string>())).Add(name);
-                            _comment._typeParameterTexts.Add(name, typeParamText.Trim()); // TODO: trim each line
+                            _comment._typeParameterTexts.Add(name, TrimEachLine(typeParamText));
                         }
                     }
                     else if (XmlNames.ElementEquals(localName, XmlNames.ExceptionElementName))