Maniphest T384157

Update plural rules to CLDR version 48
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	Amire80
	Jan 19 2025, 6:37 PM

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Description

It looks like plural rules in MediaWiki haven't been updated from upstream CLDR since 2014 (rMW8dc3631093e1: Update plural data to CLDR 26). We should update them, and we should also have a procedure for updating them regularly in the future.

Some issues to notice:

Rule update for some languages may be correct, but it may require updating translations (it had to be done in Russian once, for example).
Some rules may have become wrong, so they all have to be checked with people who know the languages. In such cases, we'll have to make a local patch in plurals-mediawiki.xml and to report an upstream bug. (I know that it has to be done for Hebrew, but some other languages may need this, too.)
A procedure for updating has to be documented, so that it will be possible to practice it regularly.
add other stuff if needed

I noticed this because of an issue with T384155.

Previous update: T64861

Details

Related Changes in Gerrit:

	Subject	Author	Repo	Branch	Lines +/-
	Update plural data to CLDR 48	NMW03	mediawiki/core	master	+338 -168

Customize query in gerrit

Related Objects
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		Status	Subtype	Assigned	Task
		Open		Nemoralis	T384157 Update plural rules to CLDR version 48
		Resolved		Reedy	T426413 Tag new release for CLDRPluralRuleParser
		Resolved		Nemoralis	T425134 CLDRPluralRuleParser lacks support for c and e operands
		Open		None	T437232 Translate: Make translation backport exclusions configurable by target branch, language and content
		Open	Feature	None	T437265 Add maintenance script to mark PLURAL translations for review after plural rule changes
		Open		srishakatux	T437374 Notify affected language communities before CLDR 48 plural rules land

Event Timeline

Amire80 created this task.Jan 19 2025, 6:37 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptJan 19 2025, 6:37 PM

Reedy updated the task description. (Show Details)Jan 19 2025, 10:23 PM

Bugreporter merged a task: T369469: Update plurals.xml from 2014 to a more recent CLDR version.Jan 20 2025, 12:24 AM

Bugreporter subscribed.

Is there any guide to how to update it?

srishakatux edited projects, added: LPL Onboarding and Development; removed: LPL Onboarding and Development (Current).Feb 19 2025, 4:40 PM

Change #1121441 had a related patch set uploaded (by NMW03; author: NMW03):

[mediawiki/core@master] Update plural data to CLDR 46

https://gerrit.wikimedia.org/r/1121441

gerritbot added a project: Patch-For-Review.Feb 20 2025, 9:22 PM

MaryMunyoki moved this task from Backlog to Incoming Requests on the LPL Onboarding and Development board.Mar 4 2025, 4:46 PM

MaryMunyoki triaged this task as Medium priority.Mar 4 2025, 4:53 PM

MaryMunyoki moved this task from Incoming Requests to Backlog on the LPL Onboarding and Development board.Apr 1 2025, 7:40 PM

removing tag as this is not in Q1 priorities (July 2025- Sep 2025), might need to revisit later

MaryMunyoki removed a project: LPL Onboarding and Development.Jul 2 2025, 4:53 PM

Nemoralis renamed this task from Update plural rules to CLDR version 46 to Update plural rules to CLDR version 48.Nov 15 2025, 11:29 PM

Nemoralis mentioned this in T425134: CLDRPluralRuleParser lacks support for c and e operands.May 1 2026, 5:22 PM

Nemoralis updated the task description. (Show Details)May 3 2026, 9:10 PM

srishakatux added a project: LPL Onboarding and Development.May 6 2026, 5:30 AM

srishakatux moved this task from Backlog to Needs Review on the LPL Onboarding and Development board.

Reedy created subtask T426413: Tag new release for CLDRPluralRuleParser.May 15 2026, 12:54 PM

Reedy closed subtask T426413: Tag new release for CLDRPluralRuleParser as Resolved.May 22 2026, 11:26 AM

MaryMunyoki edited projects, added: LPL Projects (Language Onboarding (i18n & L10n support)); removed: LPL Onboarding and Development.Jul 2 2026, 9:48 PM

Nikerabbit added a subtask: T437232: Translate: Make translation backport exclusions configurable by target branch, language and content.Mon, Sep 7, 2:57 PM

Nikerabbit mentioned this in T437265: Add maintenance script to mark PLURAL translations for review after plural rule changes.Tue, Sep 8, 8:25 AM

Nikerabbit added a subtask: T437265: Add maintenance script to mark PLURAL translations for review after plural rule changes.

Nemoralis claimed this task.Tue, Sep 8, 5:38 PM

srishakatux created subtask T437374: Notify affected language communities before CLDR 48 plural rules land.Tue, Sep 8, 11:31 PM