Add a release note that makemessages no longer changes .po files when up to date.

[אורי]

I didn't find any documentation of #6106 in Django 4.1 release notes (Prevented makemessages from changing .po files when up to date). I think this should be documented.

[Tim Graham]

It looks like a bug fix, not a new feature. Why would you document it?

[אורי]

It's a change after 15 years of updating this line every time makemessages was called. If it was a bug it wouldn't persist for 15 years.

[אורי]

Also, Claude Paroz wrote: "IMHO this is clearly a wontfix issue, as jezdez stated. It is perfectly legitimate to update POT-Creation-Date each time a po file is updated.". So I don't think it was a bug.

[Tim Graham]

Is it causing you problems? Should it be documented as a backward incompatible change? How would you document it?

[אורי]

Yes, I ran make_messages and was surprised that no files have changed. I expected each .po file to have one line changed.

How would I document it? Something like "makemessages - .po files will not change if there is no change in translations. Formerly POT-Creation-Date was always updated."

[Mariusz Felisiak]

I'm confused. We reopened #6106 after reaching a consensus on the ​mailing list. Moreover, you were in favor of #6106:

"I also find it annoying that one line changes always even if there are no changes in translations. I prefer the file not to change at all if nothing has changed."

and Claude summed up the discussion with:

"As the won't fixer person 11 years ago, I'm also more in favour of the change now, even if it changes a bit the meaning of POT-Creation-Date from "last time the pot file was updated" to "last time a change was detected in the pot file"."

[אורי]

Hi Mariusz. I like this change and I'm not asking to revert it. I just think it should be documented in the Django release notes.

[Mariusz Felisiak]

Replying to אורי:

Hi Mariusz. I like this change and I'm not asking to revert it. I just think it should be documented in the Django release notes.

OK, a small release note won't hurt. Would you like to prepare a patch?

[אורי]

I can't create the PR myself, but you can add under ​Internationalization (or ​Management Commands):

makemessages - .po files will not change if there is no change in translations. Formerly POT-Creation-Date was always updated.

[Sota Tabu]

I made PR. ​https://github.com/django/django/pull/16544

[Mariusz Felisiak <felisiak.mariusz@…>]

In 3e9d4132:

Fixed #34318 -- Added release note for 4bfe8c0eec835b8eaffcda7dc1e3b203751a790a.

[Mariusz Felisiak <felisiak.mariusz@…>]

In 8cc5caa1:

[4.2.x] Fixed #34318 -- Added release note for 4bfe8c0eec835b8eaffcda7dc1e3b203751a790a.

Backport of 3e9d413231edc29768cc7ca0427e63b19233f562 from main

[Mariusz Felisiak <felisiak.mariusz@…>]

In 425c75f5:

[4.1.x] Fixed #34318 -- Added release note for 4bfe8c0eec835b8eaffcda7dc1e3b203751a790a.

Backport of 3e9d413231edc29768cc7ca0427e63b19233f562 from main