Statements ending in select (i) now acts as if the statement was not parenthesized.

ICSharpCode.NRefactory.CSharp/QueryExpressionExpander.cs

@@ -297,7 +297,7 @@ namespace ICSharpCode.NRefactory.CSharp {
 				if (currentTransparentType.Count > 1)
 					return false;
 				var unpacked = ParenthesizedExpression.UnpackParenthesizedExpression(expr);
-				return expr is IdentifierExpression && ((IdentifierExpression)expr).Identifier == currentTransparentType[0].Item1.Name;
+				return unpacked is IdentifierExpression && ((IdentifierExpression)unpacked).Identifier == currentTransparentType[0].Item1.Name;
 			}
 
 			public override AstNode VisitQuerySelectClause(QuerySelectClause querySelectClause) {

ICSharpCode.NRefactory.Tests/CSharp/QueryExpressionExpanderTests.cs

@@ -392,6 +392,22 @@ namespace ICSharpCode.NRefactory.CSharp {
 			});
 		}
 
+		[Test]
+		public void TrivialSelectIsEliminatedAfterWhereEvenWhenParenthesized() {
+			var node = ParseUtilCSharp.ParseExpression<QueryExpression>("from i in arr1 where i > 5 select (i)");
+			var actual = new QueryExpressionExpander().ExpandQueryExpressions(node);
+			AssertCorrect(actual.AstNode, "arr1.Where(i => i > 5)");
+			dynamic astNode = actual.AstNode;
+			AssertLookupCorrect(actual.RangeVariables, new[] {
+				Tuple.Create(new TextLocation(1, 6), (AstNode)ElementAt(ElementAt(astNode.Arguments, 0).Parameters, 0)),
+			});
+			AssertLookupCorrect(actual.Expressions, new[] {
+				Tuple.Create(new TextLocation(1, 1), (AstNode)astNode.Target.Target),
+				Tuple.Create(new TextLocation(1, 22), (AstNode)astNode),
+				Tuple.Create(new TextLocation(1, 28), (AstNode)astNode),
+			});
+		}
+
 		[Test]
 		public void TrivialSelectIsNotEliminatingWhenTheOnlyOperation() {
 			var node = ParseUtilCSharp.ParseExpression<QueryExpression>("from i in arr1 select i");