thumb: popup images and render LaTeX directly in Vim

I made a small Vim 9.2+ plugin called thumb.

• Put the cursor on an image path → :Thumb → popup the image.
• Select LaTeX in Visual mode → :Thumb → render it as an image popup.

For example:

![diagram](images/diagram.png)

Put the cursor on diagram.png and run:

:Thumb

Or select:

\frac{a}{b} = \sqrt{x^2 + y^2}

and run:

:Thumb

It uses Vim's native popup image support, with Python/Pillow for image conversion and matplotlib for LaTeX rendering.

No mappings are installed, so you can add your own:

nnoremap <leader>t <Cmd>Thumb<CR>
xnoremap <leader>t <Cmd>Thumb<CR>

GitHub: https://github.com/JosefAlbers/thumb

Requires Vim 9.2+, Python 3, Pillow, and matplotlib.

Feedback welcome, particularly around the popup positioning/rendering.