CLDR, the Common Locale Data
Repository project from the Unicode Consortium,
provides translated locale-specific information like language
names, country names, currency, date/time etc. that can be used in
various applications. This library, used across several platforms,
is particularly useful in maintaining parity of locale information
in internationalized applications. In MediaWiki, the CLDR extension
provides localized data and functions that can be used by
The CLDR project constantly updates and maintains this database
and publishes it twice a year. The information is
periodically reviewed through a submission and vetting process.
Individual participants and organisations can contribute during
this process to improve and add to the CLDR data. The most recent
version of CLDR was released in September 2014.
An important part of the CLDR data are the rules that impact
how plurals are handled within the grammar of a
language. In CLDR versions 25 and 26, plural rules for several
languages were altered. These changes have already been
incorporated in MediaWiki, which was still using rules from CLDR
The affected languages are: Russian (ru), Abkhaz (ab), Avaric
(av), Bashkir (ba), Buryat (bxr), Chechen (ce), Crimean Tatar
(crh-cyrl), Chuvash (cv), Inguish (inh), Komi-Permyak (koi),
Karachay-Balkar (krc), Komi (kv), Lak (lbe), Lezghian (lez),
Eastern Mari (mhr), Western Mari (mrj), Yakut (sah), Tatar (tt),
Tatar-Cyrillic (tt-cyrl), Tuvinian (tyv), Udmurt (udm), Kalmyk
(xal), Prussian (prg), Tagalog (tl), Manx (gv), Mirandese (mwl),
Portuguese (pt), Brazilian Portuguese (pt-br), Uyghur (ug), Lower
Sorbian (dsb), Upper Sorbian (hsb), Asturian (ast) and Western
This change will have very little impact on our users.
Translators, however, will have to review the user interface
messages that have already been changed to include the updated
An announcement with the details of the change has also been
made. The announcement also includes instructions for updating the
translations for the languages mentioned above.
The CLDR MediaWiki extension, which provides convenient
abstraction for getting country names, language names etc., has
also been upgraded to use CLDR 26.
Universal Language Selector and CLDRPluralRuleParser libraries have been upgraded to
use latest data as well.
The Wikimedia Foundation is a participating organisation in the
CLDR project. Learn more about how you can be part of this
Further reading about CLDR and its use in Wikimedia
Runa Bhattacharjee, Outreach and QA coordinator, Language
Engineering, Wikimedia Foundation