Native Notebooks - Add Code Cell

[claudiaregio]

• VSCode Version: 1.51.0 Insider

Steps to Reproduce:

1. Opened Python notebook
2. Ran all cells
3. Click add code cell
4. Plain text cell is added, not python code cell

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• New markdown cell loses contents after moving (#103594)
• View state persisted for wrong cell (#106670)
• Allow extensions to call cell commands with cell arguments (#98282)
• UX for an empty notebook (#95903)
• Notebook UX - Code cell behavior during drag'n'drop (#101397)

[claudiaregio]

Closing as this is no longer happening

[claudiaregio]

Reopening as I figured out the pattern. This only happens if the previous cell is a markdown cell.

[rebornix]

@DonJayamanne we had discussions about this before and we might need some way to indicate what's the preferred language to use when creating new code cells.

[DonJayamanne]

@rebornix
I think providing an API asking from the extension for the preferred language is a better way.
Here are some scenarios we need to consider:

• Most kernels in Jupyter only support a single language
  • Thus when using such kernels, the default language of the cell is same as the kernel langauge
• Some kernels support multiple languages
  • In such cases, the language will be determined by the user
  • We don't know the languages a kernel supports out of the box

Suggestion

• For new cells use the language of the previous code cell
  • I.e. walk backwards from current cell, & look for the first code cell
• If there are no code cells
  • Then optionally provide an extensibility point for extension to provide the default language
  • E.g. at a property on NotebookMetadata for the default cell language.

[rebornix]

@DonJayamanne agree on the suggestions. I pushed a change to find nearest code cell and use its language.

Then optionally provide an extensibility point for extension to provide the default language

I'll think about the API together with kernel language support.

[miguelsolorio]

@claudiaregio are you still seeing this? Was testing this today and didn't reproduce so I think it's fixed @rebornix?

[claudiaregio]

No I am no longer seeing this! looks fixed! :)