Fixed other LINQ case.

ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs

@@ -408,6 +408,8 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 				if (IsInsideCommentOrString ())
 					return null;
 				if (IsInLinqContext (offset)) {
+					if (!controlSpace && !(char.IsLetter (completionChar) || completionChar == '_'))
+						return null;
 					tokenIndex = offset;
 					token = GetPreviousToken (ref tokenIndex, false); // token last typed
 					if (!char.IsWhiteSpace (completionChar) && !linqKeywords.Contains (token))

ICSharpCode.NRefactory.Tests/CSharp/CodeCompletion/CodeCompletionCSharp3Tests.cs

@@ -447,6 +447,25 @@ class A
 	}
 }
 
+");
+			Assert.IsTrue(provider == null || provider.Count == 0); // <--- here 0 item in the completion list
+		}
+		
+		[Test()]
+		public void TestLinqExpressionContext () 
+		{
+			var provider = CodeCompletionBugTests.CreateProvider(
+@"
+using System.Collections.Generic;
+using System.Linq;
+class A
+{
+	public static void Main (string[] args)
+	{
+		$from a in args where a !$
+	}
+}
+
 ");
 			Assert.IsTrue(provider == null || provider.Count == 0); // <--- here 0 item in the completion list
 		}