#30439: ngettext broken for certain locales due to catalog merging
-------------------------------------+-------------------------------------
Reporter: Michal Čihař | Owner: Claude
| Paroz
Type: Bug | Status: assigned
Component: | Version: 2.2
Internationalization |
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Michal Čihař):
It would be necessary to avoid merging of the catalogs and perform lookup
over several catalogs. With merging, the lookup in the catalog can not
respect plural equation defined in the file. With Czech language I believe
this is issue only because of a bug in the plural form (see below), but
there are language were several different plural forms are widely used
(for example [https://hosted.weblate.org/languages/lv/#information
Latvian], where they have same number of plurals, but reverse ordering of
the strings in one of them).
Going back to Czech locale, the plural equation for Czech (which you
apparently got from Transifex) doesn't make sense at all, because it
defines 4 plural forms, but it never evaluates to 2 because `n % 1` is
always 0:
`(n == 1 && n % 1 == 0) ? 0 : (n >= 2 && n <= 4 && n % 1 == 0) ? 1: (n % 1
!= 0 ) ? 2 : 3`
So the correct fix here would be revert to original formula and blame
Transifex to fix this. Probably some damage was done to the plurals
translation meanwhile...
PS: I've seen such messed up plurals already in several projects which
have decided to migrate from Transifex to [https://weblate.org/ Weblate]
(which I develop), not sure if anybody has reported this to them.
--
Ticket URL: <https://code.djangoproject.com/ticket/30439#comment:5>
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