Creating a new F# notebook switches initial cell to C# after saving

[bmitc]

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Describe the bug

1. Open Visual Studio Code
2. Create a new blank notebook
3. Select "Create as '.dib'" (note: this bug doesn't happen if the .ipynb format is selected at this step)
4. Select "F#" as default language
5. Note that the initial cell is an F# cell
6. Save the notebook to disk
7. Note that the initial cell has now switched to a C# cell

Please complete the following:

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

Version: 1.0.340501+e6a4bd71118e0f7b202c761dd208cfa38bd5683b

Library version: 1.0.0-beta.22405.1+e6a4bd71118e0f7b202c761dd208cfa38bd5683b

Build date: 2022-08-12T03:08:59.0408371Z

• OS
  • [x] Windows 11
  • [ ] 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)

Screenshots

If applicable, add screenshots to help explain your problem.

[AbhitejJohn]

Gave this a quick shot today and this only repros if the first cell is empty. We also coalesce multiple empty cells and reset the language to C#. While the coalescing makes sense, we would want to review why we reset the language.

[bmitc]

As a note, I have realized this only happens when creating .dib notebooks and not .ipynb notebooks.

[bmitc]

This may be related to https://github.com/dotnet/interactive/issues/1324

[xperiandri]

In Visual Studio it happens for .ipynb too https://marketplace.visualstudio.com/items?itemName=MLNET.notebook

[xperiandri]

Like I described in https://github.com/dotnet/interactive/issues/1827

[colombod]

Closed as duplicate of #2289

[xperiandri]

How are they connected?

[colombod]

They relate to a bug in document metadata handling causing default languages to changedDr Diego Colombo PhDOn 27 Sep 2022, at 18:38, Andrii Chebukin @.***> wrote: How are they connected?

—Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you modified the open/close state.Message ID: @.***>

[xperiandri]

Ah, sorry. I was not attentive enough