Emacs: modus-themes version 5.1.0

I just published the latest stable release of the Modus themes. The change log entry is reproduced further below. For any questions, you are welcome to contact me. I will now work to apply these same changes to emacs.git, so please wait a little longer for the updates to trickle down to you.

Package name (GNU ELPA): modus-themes (also built into Emacs 28+)
Official manual: https://protesilaos.com/emacs/modus-themes
Change log: https://protesilaos.com/emacs/modus-themes-changelog
Colour palette: https://protesilaos.com/emacs/modus-themes-colors
Sample pictures: https://protesilaos.com/emacs/modus-themes-pictures
Git repositories:
- GitHub: https://github.com/protesilaos/modus-themes
- GitLab: https://gitlab.com/protesilaos/modus-themes
Backronym: My Old Display Unexpectedly Sharpened … themes.

5.1.0 on 2025-11-07

This version fixes a critical bug in the modus-themes-with-colors macro. In short, it was not working as before or was not working at all. Now it should do the right thing.

Thanks to Alexandr Semenov for reporting a relevant bug in issue 170 and for helping me test the results: https://github.com/protesilaos/modus-themes/issues/170.

Thanks to Stéphane Marks for testing some configurations with the latest stable Emacs version as well as with builds from emacs.git. This was done via a private channel and I am sharing this information with permission.

Also thanks to Stefan Monnier for monitoring my commits as I was trying to refactor the modus-themes-with-colors macro. Some comments were posted on the emacs-devel mailing list, as well as a patch that I ended up applying and then reverting (check the commit log for the technicalities): https://lists.gnu.org/archive/html/emacs-devel/2025-11/msg00114.html.

Apologies to everyone for the inconvenience! This was a tricky bug. The good thing is that it compelled me to improve several parts of the code.

This version also includes a clarification in the manual about building a theme on top of Modus:

Web page: Visit https://protesilaos.com/emacs/modus-themes#h:86eb375b-9be4-43ce-879a-0686a524a63b.
Info manual: Evaluate (info "(modus-themes) Build on top of the Modus themes").

In short, it mentions that a theme exists in an appropriately named file that is part of the custom-theme-load-path. Thanks to Ashton Wiersdorf for asking a related question in issue 171: https://github.com/protesilaos/modus-themes/issues/171.