[Translators-l] Plural rule changes for many languages - MediaWiki migrates to CLDR 26

Wed Oct 29 08:58:41 UTC 2014

Note also that CLDR does not use any nu,erotation for plural forms! This is
an purely internal mapping of symbols (one, two, zero, few, many, other...)
to integers used by Gettext and the existing online translation tools
(which in my opinion should better use the symbols)
The mapping for symbols to integers should be left as a separate adaptation
layer for each languages with ts own local resources (even if this is done
by code). And in all languages there should be a mapping of the "other"
symbolic name to make sure it is defined everywhere (an in my opinion the
"other" rule should be mapped everywhere to form number 0, so that ifa
resource is still not translated in one specific form, it can fallback to
the "other" form (and always before fallbacking to other languages when
there's no form translated at all).
The "other" form should then be mandatory before translating any other
forms (numbered 1;2;3... according to the language-specific mapping of
symbols to this numerotation).
As translated resources are not using the numerotation directly but only
the symbols (possibly abbreviated to one character; "o"="one",
"d"="dual=two", "f"="few", "m"="many",... except "other" mapped as the
default with no character at all and numbered 0). No need then to renumber
or swap resources (and for many resources, we would no longer need to
translate every possible form, and the language-specific  mapping of plural
forms could use specific fallbacks to another form than the"other" form;
used as a last resort fallback).
With these fallbacks; the job for transltors would be simplified because
most often only one frm will be actually used (the "other" form; generally
the most common plural form used also for undetermined numbers); and if a
second form is used it is also used for the remaining other forms via their
fallbacks (this includes most Slavic languages workin this way)
Note that fallbacks frm one plural form to another is specific of the
grammatical case; and in fact in Slavic languages the case and number are
directly correlated such that a genitive singular can be used as a
nominative plural.
I'd then suggest that the trnaslation interface allows selecting BOTH the
number and grammatial case to map them to one of the possible forms, and
then let the adapter interface mame the necessary mapping to the precise
symbolic forms or one of its fallbacks.

2014-10-29 9:37 GMT+01:00 Philippe Verdy <verdy_p at wanadoo.fr>:

> Regarding Russian; what I see is that there's a separation of decimals
> which should be minor (like Uyghur or Asturian), but I don't understand why
> there was the need to swap the 2nd and 3rd form and why an automated bot
> could not perform this swap automatically in ressources, and could not be
> using the existing 3rd form (now 2nd) be used to create a new default value
> (to review) for the 4th form for numbers with decimals.
>
>
> 2014-10-27 19:44 GMT+01:00 Niklas Laxström <niklas.laxstrom at gmail.com>:
>
>> MediaWiki is upgrading its plural rules to match CLDR version 26. The
>> updates include incompatible changes for plural forms in Russian,
>> Prussian, Tagalog, Manx and several languages that fall back to
>> Russian. In addition there are minor changes for other languages.
>>
>> In January 2014, CLDR 24 had introduced several changes in the plural
>> forms for some of these languages, including Russian, and we had
>> updated MediaWiki's plural rules to comply with the CLDR standard.
>> Some of these changes are now being reverted. Below is a detailed
>> explanation of the changes.
>>
>> For the migration period, from Monday, 27th October 2014 to Thursday
>> 6th November 2014, we have disabled LocalisationUpdate at Wikimedia
>> wikis to reduce the chance of ungrammatical translations being
>> displayed in the interface. Translators are requested to start
>> updating translations from Tuesday 28th October 2014 onward.
>>
>> Further updates will be posted on
>>
>> https://translatewiki.net/wiki/Thread:Support/Plural_rule_changes_for_many_languages
>>
>> == Russian and language using Russian as fallback ==
>> Languages affected: 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).
>>
>> CLDR 24 plural forms for Russian were:
>> * Form 1: @integer 1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, …
>> * Form 2: @integer 0, 5~19, 100, 1000, 10000, 100000, 1000000, …
>> * Form 3: @integer 2~4, 22~24, 32~34, 42~44, 52~54, 62, 102, 1002, …
>> @decimal 0.0~1.5, 10.0, 100.0, 1000.0, 10000.0, 100000.0, 1000000.0, …
>>
>> This has been changed to :
>> * Form 1: @integer 1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, …
>> * Form 2: @integer 2~4, 22~24, 32~34, 42~44, 52~54, 62, 102, 1002, …
>> * Form 3: @integer 0, 5~19, 100, 1000, 10000, 100000, 1000000, …
>> * Form 4: @decimal 0.0~1.5, 10.0, 100.0, 1000.0, 10000.0, 100000.0,
>> 1000000.0, …
>>
>> Plurals in translations for affected languages have been updated
>> automatically where possible. Translators are requested to check all
>> messages containing plurals, starting from those which have been
>> marked as outdated.
>>
>> == Prussian ==
>> Prussian (prg) now follows the same rules as Latvian (lv):
>> * Form 1: @integer 0, 10~20, 30, 40, 50, 60, 100, 1000, 10000, 100000,
>> 1000000, … @decimal 0.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0,
>> 100.0, 1000.0, 10000.0, 100000.0, 1000000.0, …
>> * Form 2: @integer 1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, …
>> @decimal 0.1, 1.0, 1.1, 2.1, 3.1, 4.1, 5.1, 6.1, 7.1, 10.1, 100.1,
>> 1000.1, …
>> * Form 3: @integer 2~9, 22~29, 102, 1002, … @decimal 0.2~0.9, 1.2~1.9,
>> 10.2, 100.2, 1000.2, …
>>
>> Translators are requested to update all translations containing plural
>> rules. Those translations have been marked as outdated.
>>
>> == Tagalog ==
>> Tagalog (tl) has new rules as follows:
>> * Form 1: @integer 0~3, 5, 7, 8, 10~13, 15, 17, 18, 20, 21, 100, 1000,
>> 10000, 100000, 1000000, … @decimal 0.0~0.3, 0.5, 0.7, 0.8, 1.0~1.3,
>> 1.5, 1.7, 1.8, 2.0, 2.1, 10.0, 100.0, 1000.0, 10000.0, 100000.0,
>> 1000000.0, …
>> * Form 2: @integer 4, 6, 9, 14, 16, 19, 24, 26, 104, 1004, … @decimal
>> 0.4, 0.6, 0.9, 1.4, 1.6, 1.9, 2.4, 2.6, 10.4, 100.4, 1000.4, …
>>
>> Translators are requested to update all translations containing plural
>> rules. Those translations have been marked as outdated.
>>
>> == Manx ==
>> Manx (gv) has a new (fourth) form for decimals. New rules are as follows:
>> * Form 1: @integer 1, 11, 21, 31, 41, 51, 61, 71, 101, 1001, …
>> * Form 2: @integer 2, 12, 22, 32, 42, 52, 62, 72, 102, 1002, …
>> * Form 3: @integer 0, 20, 40, 60, 80, 100, 120, 140, 1000, 10000,
>> 100000, 1000000, …
>> * Form 4: @decimal 0.0~1.5, 10.0, 100.0, 1000.0, 10000.0, 100000.0,
>> 1000000.0, …
>> * Form 5: @integer 3~10, 13~19, 23, 103, 1003, …
>>
>> Translators are requested to update all translations containing plural
>> rules. Those translations have been marked as outdated.
>>
>> == Other languages ==
>> * In Mirandese (mwl), Portuguese (pt) and Brazilian Portuguese
>> (pt-br), the first form now also includes zero.
>> * In Uyghur (ug), Lower Sorbian (dsb) and Upper Sorbian (hsb), support
>> for decimals was added.
>> * In Asturian (ast) and Western Frisian (fy), the first form is no
>> longer used for decimals.
>>
>> Translators are encouraged to review translations with plural forms
>> and update them where necessary. Because the changes have been minor,
>> we have not marked those translations as outdated.
>>
>>   -Niklas
>>
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>>
>
>
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