nbconvert export omits markdown cells

[janr85]

I have noticed that newer base and minimal docker images on dockerhub do not export markdown cells to asciidoc format. It seems that this problem has been introduced at some point of version 7.5.0.

For further details, please have a look at this stackoverflow question.

[janpfeifer]

Similar here, when running jupyter nbconvert --execute -to asciidoc some_notebook.ipynb and the notebook outputs even the most trivial text/markdown MIME data (just a simple "hello world" message), nbconvert will output empty instead.

Curiously this is part of a test for GoNB, a Go Kernel, and it used to work just a few weeks ago. But since then I did some updates to Jupyter and related packages so versions have changed (but I wouldn't know which).

Currently I have:

JupyterLab version: 4.0.6
jupyter nbconvert --version: 7.8.0
jupyter server --version: 2.7.3

[janpfeifer]

I should also mention that if using nbconvert --to=html it works just fine, it will convert the output of markdown. It's an issue only with --to=asciidoc.

[saf-dmitry]

By converting to Asciidoc nbconvert outputs following error messages for each Markdown cell:

Unknown option --atx-headers.
Try pandoc --help for more information.

It seems, the problem is that nbconvert uses obsolete pandoc option --atx-headers instead of recent --markdown-headings=atx.

See markdown2asciidoc function definition.

[thomasjm]

Hello, would someone like to try the fix here? #2152

[janpfeifer]

Hello, would someone like to try the fix here? #2152

Many thanks for the fix!!

I'd be happy to try it for GoNB test. Is it part of a pip package already ?

[thomasjm]

No, I'm not a maintainer here. You'll have to use my branch.

I've tested it myself now and it seems to work.

If you happen to use Nix, you can build a working nbconvert with this patch: codedownio/nixpkgs@7968f56

[jeffmelville]

I'm having this issue as well. I haven't tried the fix verbatim, but modifying the pandoc arguments to --markdown-headings=atx is working as a temporary workaround. +1 for getting this fix in