Error converting cells with R magic and metadata

[capelastegui]

Some of my notebooks have cells with the following metadata:

"metadata": {
    "active": "ipynb"
   }

I think this was added automatically after migrating from an older version of jupytext, but I'm not sure of the details. The problem is, when I add the %%R magic to one of these cells and convert the notebook to a .py file, the new magic is ignored.

This can be fixed manually by copying the cell text to a new cell and deleting the original one, so it's not a huge problem.

An example notebook is attached - added the .txt extension because github won't accept .ipynb files.
Notebook - R cells with metadata.ipynb.txt

[mwouts]

Hello @capelastegui , thanks for reporting. Indeed the automatic addition of "active" metadata does not seem to work well for notebooks with multiple languages when those are exported as scripts. I think the notebook you provided for #111 also shows the issue. When time permits I will provide a fix for this.

[mwouts]

Fixed in v0.8.4