Chunks not following automatic Emacs switch to light/dark theme

[basille]

I've been using polymode for a long while now and I love it! The one thing that I've been bugging me however is that I set my Emacs to automatically switch between light and dark mode at sunrise/sunset (for instance using circadian, but I have the same issue with Auto-Dark for Emacs), and polymode's chunks get stuck in the mode they were loaded at startup (whether light or dark).

The result looks like this when switching to dark mode:

My guess is that this is directly related to the explanations given in issue #18: the theme of the chunks are only loaded at startup. The suggestion to M-x load-library polymode RET do not change the theme, and I'm not able to M-x load-file polymode.e — the only solution I have is to restart Emacs (which is annoying in the middle of an R session).

[basille]

Up. Anything I could do to start debugging this?

[vspinu]

I think the face adjustment is not correctly computed then. The computation is done in poly-lock--adjusted-background

It relies on (frame-parameter nil 'background-mode). Could it be that the background-mode is not changed when the theme is changed? If so then it's not polymode's issue. Should be fixed upstream.

[basille]

Thanks @vspinu for your feedback. Is there anything I could do to actually test your hypothesis? Happy to look further into it if I can help, although I really don't know how to get started.

[basille]

Bringing this up — not sure where to start to try to debug this. Any suggestion @vspinu so I can get started?

[jloow]

I'm also running into this problem. For me, however, I can edit the chunk and the background will change to the correct color.

Does anyone know what causes the background to change in this case?