Outputs from dotnet-repl are not displayed in by VS Code extension

[nhirschey]

Describe the bug

I execute a notebook using dotnet-repl, but the outputs do not show up in VS Code notebook extension viewer. cc: @jonsequitur

This has come up in the effort to allow polyglot notebooks as input for writing library documentation using FSharp.Formatting.

Specifically, I run dotnet repl --run .\docs\literate-notebook.ipynb --exit-after-run --default-kernel fsharp --output-path .\docs\literate-notebook.ipynb.

When I open the notebook in VS Code the outputs are not displayed, yet if I open the file in text mode I can see the outputs there for the cell. Notebook gist here. Screensot of notebook in vs code below

Please complete the following:

Which version of .NET Interactive are you using? (In a notebook, run the #!about magic command. ):

• OS

  • [x] Windows 11

• Frontend

  • [x] Visual Studio Code
  • [x] Visual Studio Code Insiders

Screenshots

If applicable, add screenshots to help explain your problem.

[marckruzik]

I have the same problem. I'm giving more information to help.

I used dotnet-repl for a C# .dib notebook. dotnet repl --run test.dib --exit-after-run --output-path output.ipynb When I load the output.ipynb file, the output cells are cleared.

I made an animation showing the problem with a 22 Kb ipynb file:

• start with no VS Code open
• double click on the ipynb file
• VS Code launches
• the ipynb file is open
• output cells are displayed
• output cells are cleared
• (the following instructions are extra steps to reproduce the bug each time)
• open a new blank document
• close the ipynb file (confirm)
• close the blank document
• close VS Code

This procedure has a few extra steps to reproduce the bug each time: I also create a blank new document before closing the ipynb file, then the blank document, then VS Code. Because if I just close the ipynb file and reopens it, the ipynb file is reopened with the cells already cleared (maybe because of a cache). By following the steps above, the bug can be reproduced each time.

Also, after the cells output have been cleared, the ipynb document is considered as modified. If I save it using Save As, the file is smaller (from 22 Kb to 10 Kb).

Which version of .NET Interactive are you using? (In a notebook, run the #!about magic command. ):

Version: 1.0.456201+e5dc02dbdc933d895d722e69bfa98d580dcda8d9

• OS
  • [ ] Windows 11
  • [x] Windows 10
  • [ ] macOS
  • [ ] Linux (Please specify distro)
  • [ ] iOS
  • [ ] Android
• Browser
  • [ ] Chrome
  • [ ] Edge
  • [ ] Firefox
  • [ ] Safari
• Frontend
  • [ ] Jupyter Notebook
  • [ ] Jupyter Lab
  • [ ] nteract
  • [x] Visual Studio Code
  • [ ] Visual Studio Code Insiders
  • [ ] Visual Studio
  • [ ] Other (please specify)

[jonsequitur]

This problem isn't specific to dotnet-repl. The same behavior is exhibited with files saved using Jupyter Lab.

This appears to be a regression in VS Code.