Am 12.04.22 um 21:32 schrieb Lars Ingebrigtsen:

Andreas Röhler <andreas.roehler@easy-emacs.de> writes:

I don't get any errors.  I guess I need a diary file for today to
reproduce the problem?  What do you have?

 In ~/.emacs.d/diary exists an empty foo.org

Sorry, I don't understand what that means.

You asked for a diary file. Don't have that. But have a file SOME.org in that directory, where
diary-fancy-display is looking into. Which shouldn't matter WRT bug, just because you asked.

BTW the whole point is to care for the case, that no diary-file exists but the custom-vars are set like given.
Exclude (with-current-buffer nil)