Define TabExpansion function in NuGet PowerShell console.

src/AddIns/Misc/PackageManagement/Project/Src/Scripting/PackageManagementConsoleHost.cs

@@ -126,6 +126,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 			powerShellHost.SetRemoteSignedExecutionPolicy();
 			UpdateFormatting();
 			RedefineClearHostFunction();
+			DefineTabExpansionFunction();
 			UpdateWorkingDirectory();
 		}
 		
@@ -163,6 +164,15 @@ namespace ICSharpCode.PackageManagement.Scripting
 			powerShellHost.ExecuteCommand(command);
 		}
 		
+		void DefineTabExpansionFunction()
+		{
+			string command =
+				"function TabExpansion($line, $lastWord) {" +
+				"    return New-Object PSObject -Property @{ NoResult = $true }" +
+				"}";
+			powerShellHost.ExecuteCommand(command);
+		}
+		
 		void WriteInfoBeforeFirstPrompt()
 		{
 			WriteNuGetVersionInfo();

src/AddIns/Misc/PackageManagement/Test/Src/Scripting/PackageManagementConsoleHostTests.cs

@@ -18,12 +18,12 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using ICSharpCode.PackageManagement;
 using ICSharpCode.PackageManagement.Design;
 using ICSharpCode.PackageManagement.EnvDTE;
 using ICSharpCode.PackageManagement.Scripting;
 using ICSharpCode.Scripting;
-using ICSharpCode.Scripting.Tests.Utils;
 using NuGet;
 using NUnit.Framework;
 using PackageManagement.Tests.Helpers;
@@ -673,5 +673,18 @@ namespace PackageManagement.Tests.Scripting
 			
 			Assert.IsTrue(powerShellHost.IsSetDefaultRunspaceCalled);
 		}
+		
+		[Test]
+		public void Run_ConsoleExitsOnFirstRead_TabExpansionFunctionDefined()
+		{
+			CreateHost();
+			RunHost();
+			
+			string partialExecutedScript = "function TabExpansion";
+			
+			bool executed = powerShellHost.AllCommandsPassedToExecuteCommand.Any(command => command.Contains(partialExecutedScript));
+			
+			Assert.IsTrue(executed);
+		}
 	}
 }