Last modified: 2012-09-24 16:41:55 UTC
This comment in the code (for Russian) indicates, that fractional numbers are not really supported by Language::convertPlural() method: http://svn.wikimedia.org/viewvc/mediawiki/trunk/phase3/languages/classes/LanguageRu.php?revision=70131&view=markup#l79 Russian, Polish and other slavic languages (and probably many more) use a different form for franctional numbers. This document: http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/language_plural_rules.html#ru does not seem to address this. The only case where we *might* needed is to display amount of the funds donated to the Wikimedia Foundation: http://svn.wikimedia.org/viewvc/mediawiki/trunk/extensions/CentralNotice/SpecialBannerLoader.php?revision=83744&view=markup#l126 (not sure if having fractions of millions there is a good idea, if it is not - please WONTFIX this bug).
Example from Polish: 1 milion 2 miliony 3 miliony 4 miliony 5 milionów 6 milionów 44 miliony 44,5 miliona 44,7 miliona but things get nasty, if counting for example people: 44,5 milinów ludzi Source in Polish: http://poradnia.pwn.pl/lista.php?id=9817
Looks like it's impossible to get right without externally provided context.
Well, dealing with the context is simple, you just provide appropriate parameters to PLURAL in a message (example syntax): {{PLURAL|milion|miliony|milionów|NOFRACTIONAL}} ludzi (for people) {{PLURAL|milion|miliony|milionów|miliona}} dolarów (for dollars) Do we want to add additional plural form (or maybe forms, and how many?). This will be implemented on a per-language basis anyway. We currently have 44 languages with specific plurals, with ar, gd and cy having 6 forms, and most of the Slavic languages having 3-4 plural forms.
Hmm you're right. CLDR says that one parameter for fractions is enough in Russian, is that true?
(In reply to comment #4) > Hmm you're right. CLDR says that one parameter for fractions is enough in > Russian, is that true? Russian fractions are always $forms[1] ("other"="few" in CLDR terms). But if you write part of number as word (e.g. "million" in the Polish example above), the plural problem becomes more complicated.
Since we switched to CLDR which *can* take fractions into account, I consider this fixed. It of course depends on the supplied rules for a language how it works.
(In reply to comment #6) > Since we switched to CLDR which *can* take fractions into account, I consider > this fixed. It of course depends on the supplied rules for a language how it > works. Does this mean that this sentence can be removed from [[mw:Localisation]]? «You should not expect PLURAL to handle fractional numbers (like 44.5), so it's probably a good idea to round the number to the nearest integer if PLURAL is necessary in the context (bugzilla:28128)».
Yes, but like I said I don't expect all our plural rules to be perfect yet in that regard.
