Plural forms are broken in (at least) Russian .po

[Nikolay Zakharov]

It seems like we introduced plural forms breakage in some languages since the transition to transifex.net.

On the appropriate ​page one can try to search some plural words, like "week". Russian plural forms for week are "неделя", "недели", "недель". Transifex shows us that there are three forms but second and third are equal.

One can also inspect the current [[source:/trunk/django/conf/locale/ru/LC_MESSAGES/django.po|Russian django.po file]] and see that there are 3 forms defined in Plural-Forms header, but 4 msgstr[i] string for each words with plural forms. And msgstr[1]==msgstr[2]==msgstr[3].

Since this issue can occur in other languages (I suppose to check at least those languages mentioned in r15752) this ticket was created.

I am not a member of any translation team in transifex, so I can't fix it there and will just attach a patch against current git mirror as an example.

[Dimitris Glezos]

We generally follow the Unicode standard, which states four plural forms in total:

​http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/language_plural_rules.html

one → n mod 10 is 1 and n mod 100 is not 11;
few → n mod 10 in 2..4 and n mod 100 not in 12..14;
many → n mod 10 is 0 or n mod 10 in 5..9 or n mod 100 in 11..14;
other → everything else

[Dimitris Glezos]

Upstream ticket (closed as invalid): ​http://trac.transifex.org/ticket/638

[Nikolay Zakharov]

Okay, but the main thing is not about the number of plural forms. The current msgstrs are still wrong.

[Nikolay Zakharov]

An updated Russian .po with fourth form.

[Claude Paroz]

Reading the latest patch, I don't see anything which cannot be fixed at Transifex level. So please fix it in Transifex.