attachments are not included when printing ipynb to pdf using the first option in our menu (which uses latex)

[williamstein]

1. Make a simple notebook with a single markdown cell with an image attachment (e.g., like I want to attach to this ticket, but github won't let me. Jerks. But it's easy to make such a notebook).
2. Try to print using the first option for print to pdf in the file menu.
3. The image is broken.

WORKAROUND: Use any of the other print to pdf options in the menu, which use nbconvert. They work.

[williamstein]

Right now adding attachments is broken, so I added the attachment using jupyterlab, then opened the notebook in cocalc jupyter. It shows the image just fine, but indeed print to pdf fails:

So indeed this bug is still very much a problem.

[williamstein]

Now images (which are just blob links) are not included when printing to PDF via any of the four methods. So definitely not fixed.

[williamstein]

Now images (which are just blob links) are not included when printing to PDF via any of the four methods.

This was just a side effect of working on my dev server, which has extra layers of security.

Uploaded images print via ALL methods except the first option which is actually "nbconvert via latex".

[williamstein]

I think the solution here is to download all images locally, convert any svg's to png (or pdf or?), and modify the markdown to include the images is ![]() instead of img src. Then nbconvert fully works and even handles the svg's.

[williamstein]

In any case I changed the button to say that images aren't supported for this conversion method. Much more importantly, I fixed a different bug that was preventing latex printing from working properly with our fully supported default print method.

I do think this is well worth addressing, but via the following approach:

• fully support exporting to an ipynb that has all images as attachments instead of links, and svg --> png
• then print that with nbconvert

It's useful anyways to avoid depending on cocalc.com images.