bug#54756: 28.1; faulty date interpretation

[Peter Dyballa <Peter_Dyballa@Web.DE>]

> Am 7.4.2022 um 13:24 schrieb Lars Ingebrigtsen <larsi@gnus.org>:
> 
> I get exactly the same in Emacs 28.1.

That's not surprising, since you put the date in US American notation into diary.
> 
> I never use diary, so I don't know whether this is what's expected or
> not. Could you explain what you expected to see here, or whether you're
> seeing something else in Emacs 28.1?

In GNU Emacs 27 and before it worked to switch to European date format:

	/Library/Application Support/Emacs/site-init.el:23:(defvar european-calendar-style t)
	/Library/Application Support/Emacs/site-init.el:72:(setq european-calendar-style t)

which now does not get loaded, as *Messages* shows:

	Um 2022-04-06 21:52:54 Uhr wird /Library/Application Support/Emacs/site-start.el geladen
	/Library/Application Support/Emacs/site-start.el
	(Tipp von Kai G) Lade jetzt: cal-loaddefs
	site-start.el Zeile 497
	(Tipp von Kai G) Lade jetzt: ~/.emacs
	Sind jetzt in PETEs .emacs
	Zeile  44 .emacs, der Emacs-Typ ist 28
	It’s not XEmacs
	It’s GNU Emacs
	Zeile 228 .emacs
	Zeile 234 .emacs, desktop-dirname ist ~/.emacs.d/ und gesichert wird in emacs-28.desktop-mac
	../../Library/Application Support/Emacs/session.el: Warning: ‘incf’ is an obsolete alias (as of 27.1); use ‘cl-incf’ instead. [2 times]
	../../Library/Application Support/Emacs/session.el: Warning: ‘decf’ is an obsolete alias (as of 27.1); use ‘cl-decf’ instead.
	../../Library/Application Support/Emacs/session.el: Warning: ‘incf’ is an obsolete alias (as of 27.1); use ‘cl-incf’ instead.
	../../Library/Application Support/Emacs/session.el: Warning: ‘decf’ is an obsolete alias (as of 27.1); use ‘cl-decf’ instead.
	../../Library/Application Support/Emacs/session.el: Warning: ‘incf’ is an obsolete alias (as of 27.1); use ‘cl-incf’ instead. [4 times]
	Zeile 254 .emacs
	Zeile 259 .emacs, session-save-file ist ~/.emacs.d/session-28-mac
	Zeile 261 .emacs, custom-file ist ~/.emacs-Abrichtung-28.el
	(Tipp von Kai G) Lade jetzt: ~/.emacs-Abrichtung-28.el
	Loading /Users/pete/.emacs-Abrichtung-28.el (source)...
	Custom Set Variables 28
	(Tipp von Kai G) Lade jetzt: time
	Loading time...done
	(Tipp von Kai G) Lade jetzt: midnight
	Loading midnight...done
	Custom Set Faces 28
	Loading /Users/pete/.emacs-Abrichtung-28.el (source)...done
	(Tipp von Kai G) Lade jetzt: ~/.emacs_mac
	Loading /Users/pete/.emacs_mac...
	 AppKit-Zeile  19 .emacs_mac
	 AppKit-Zeile  23 .emacs_mac
	 Carbon/AppKit Emacs-Zeile  56 .emacs_mac
	(Tipp von Kai G) Lade jetzt: /Library/Application Support/Emacs/site-start.el
	Loading /Library/Application Support/Emacs/site-start.el (source)...
	Um 2022-04-06 21:52:54 Uhr wird /Library/Application Support/Emacs/site-start.el geladen
	/Library/Application Support/Emacs/site-start.el
	(Tipp von Kai G) Lade jetzt: hol-loaddefs
	Marking holidays...done
	(Tipp von Kai G) Lade jetzt: diary-loaddefs
	Marking diary entries...done
	Preparing diary...done
	Looking up holidays...done
	site-start.el Zeile 497
	Loading /Library/Application Support/Emacs/site-start.el (source)...done

site-start.el has:

	/Library/Application Support/Emacs/site-start.el:151:(setq european-calendar-style t)
	/Library/Application Support/Emacs/site-start.el:164:;(setq calendar-date-style 'european)	; 'iso gips auch
	/Library/Application Support/Emacs/site-start.el:165:;(calendar-set-date-style 'european)
 
I'd presume that dumping is a problem:

	Warning: Change in load-path due to site-init will be lost after dumping

which I better should avoid:

	calendar-date-style is a variable defined in ‘calendar.el’.
	
	Its value is ‘american’


Activating "(setq calendar-date-style 'european)" brings:

	calendar-date-style is a variable defined in ‘calendar.el’.
	
	Its value is ‘european’
	Original value was ‘american’

Now I get in *Fancy Diary Entries* only:

	Sunrise 06 Uhr 50, sunset 20 Uhr 05 at Friedberg (13:15 hrs daylight)

and on 4. of June:

	Sunrise 05 Uhr 19, sunset 21 Uhr 28 at Friedberg (16:08 hrs daylight)
	Geburt von Karl Valentin in München-Au als Valentin Ludwig Fey 160 Jahren
	Tod von Rupert Neville Hine

So it's more my bug - sorry!

--
Greetings

  Pete

There are very few jobs that actually require a penis or vagina. All other jobs should be open to everybody.
				– Florynce Kennedy