New tmp file is created when "Compare" is used and "Automatically insert licence headers in new files" is enabled in Visual Studio 2022 options

[CIO-COSINE]

Related to Issue #165
Visual Studio 2022 v17.4.1
LicenceHeaderManager v5.0.1

Other extensions:
Visual Studio 2022 Defaults
Live Share 2022
Productivity Power Tools 2022
Xamarin Templates , Android & Apple SDK
Progress Telerik UI for Xamarin, WPF, ASP.NET MVC, ASP.NET Core

Steps to reproduce:

1. Install LicenceHeaderManager v5.0.1 for Visual Studio 2022
2. Enable "Automatically insert licence headers in new files"

3. Open Solution under source control (TFS 2010 in my case)
4. Pick a file (in my case, any .cs or .cshtml file)
5. Right-click and select "Compare"
6. The Diff window is opened, but also a tmp file
   

This seems to occur to file extensions that are under the "Languages" window in the Licence Header options:

For example, this does not occur when comparing .resx or .scss files.

The issue goes away if "Automatically insert licence headers in new files" is disabled.

[MichaelKetting]

@ciozmi Thank you for reporting this. I can reproduce this behavior with Git by first adding a change to the file and then selecting "Compare with unmodified"

[CIO-COSINE]

I also tested the above steps in Visual Studio 2017. Same setup more or less.

No new file is created as above, however the following message appears:

It is not 100% reproducible in all cases in Visual Studio 2017 as with Visual Studio 2022.

The following appears in the Output Pane:
2022-11-30 20:07:23,813 [ERROR] LicenseHeaderManager.Utils.Extensions: Asynchronous Task failed System.NotImplementedException: Not implemented (Exception from HRESULT: 0x80004001 (E_NOTIMPL)) at EnvDTE.ProjectItem.Open(String ViewKind) at LicenseHeaderManager.Utils.CoreHelpers.TryOpenDocument(ProjectItem item, ILicenseHeaderExtension extension) in C:\Build\1776828f99d31c99\LicenseHeaderManager\Utils\CoreHelpers.cs:line 301 at LicenseHeaderManager.Utils.Extensions.GetContent(ProjectItem item, Boolean& wasAlreadyOpen, ILicenseHeaderExtension extension) in C:\Build\1776828f99d31c99\LicenseHeaderManager\Utils\Extensions.cs:line 172 at LicenseHeaderManager.LicenseHeadersPackage.<FinishedAddingItemAsync>d__63.MoveNext() in C:\Build\1776828f99d31c99\LicenseHeaderManager\LicenseHeadersPackage.cs:line 406 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at LicenseHeaderManager.Utils.Extensions.<<FireAndForget>g__ForgetAwaited|9_0>d.MoveNext() in C:\Build\1776828f99d31c99\LicenseHeaderManager\Utils\Extensions.cs:line 272

I hope these help. This seems to be related to Issue #162

Update: There are actually two types of errors that occur by doing the above in Visual Studio 2017. Below is the Output for the other error:
2022-11-30 20:01:07,397 [ERROR] LicenseHeaderManager.Utils.Extensions: Asynchronous Task failed System.Runtime.InteropServices.COMException (0x80004005): Unspecified error (Exception from HRESULT: 0x80004005 (E_FAIL)) at EnvDTE.ProjectItem.get_FileNames(Int16 index) at LicenseHeaderManager.Utils.Extensions.IsOpen(ProjectItem item) in C:\Build\1776828f99d31c99\LicenseHeaderManager\Utils\Extensions.cs:line 216 at LicenseHeaderManager.Utils.Extensions.GetContent(ProjectItem item, Boolean& wasAlreadyOpen, ILicenseHeaderExtension extension) in C:\Build\1776828f99d31c99\LicenseHeaderManager\Utils\Extensions.cs:line 170 at LicenseHeaderManager.LicenseHeadersPackage.<FinishedAddingItemAsync>d__63.MoveNext() in C:\Build\1776828f99d31c99\LicenseHeaderManager\LicenseHeadersPackage.cs:line 406 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at LicenseHeaderManager.Utils.Extensions.<<FireAndForget>g__ForgetAwaited|9_0>d.MoveNext() in C:\Build\1776828f99d31c99\LicenseHeaderManager\Utils\Extensions.cs:line 272 2022-11-30 20:07:20,150 [ERROR] LicenseHeaderManager.Utils.Extensions: Asynchronous Task failed System.NotImplementedException: Not implemented (Exception from HRESULT: 0x80004001 (E_NOTIMPL)) at EnvDTE.ProjectItem.Open(String ViewKind) at LicenseHeaderManager.Utils.CoreHelpers.TryOpenDocument(ProjectItem item, ILicenseHeaderExtension extension) in C:\Build\1776828f99d31c99\LicenseHeaderManager\Utils\CoreHelpers.cs:line 301 at LicenseHeaderManager.Utils.Extensions.GetContent(ProjectItem item, Boolean& wasAlreadyOpen, ILicenseHeaderExtension extension) in C:\Build\1776828f99d31c99\LicenseHeaderManager\Utils\Extensions.cs:line 172 at LicenseHeaderManager.LicenseHeadersPackage.<FinishedAddingItemAsync>d__63.MoveNext() in C:\Build\1776828f99d31c99\LicenseHeaderManager\LicenseHeadersPackage.cs:line 406 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at LicenseHeaderManager.Utils.Extensions.<<FireAndForget>g__ForgetAwaited|9_0>d.MoveNext() in C:\Build\1776828f99d31c99\LicenseHeaderManager\Utils\Extensions.cs:line 272