Hi Ian,

gettext itself allows this pattern [1] but django compilemessage
expects variables with same names are used in all plural forms (See
Note in [2]).
IMHO it is better to use same variables in all plural forms in code as
possible as we can.
As translator, I try to use the second pattern (i.e., plural form) as
source string as a plural form contains sufficient and full pattern in
most cases.
What I am not sure is this happens only for languages with nplural==1
(like Korean, Japanese and so on).

Akihiro

[1] 
https://www.gnu.org/software/gettext/manual/html_node/Translating-plural-forms.html#Translating-plural-forms
[2] 
https://docs.djangoproject.com/en/1.10/topics/i18n/translation/#pluralization


2016-09-16 18:57 GMT+09:00 Ian Y. Choi <ianyrc...@gmail.com>:
> Hello,
>
> Recently, thanks to the help from Andreas, I am investigating on a broken
> job
> for the translation import of Horizon project [1].
> The actual error message is
> : openstack_dashboard/locale/ko_KR/LC_MESSAGES/django.po:8273: a format
> specification for argument 'req' doesn't exist in 'msgstr[0]'
>
> And then I have found that this error was from a string in horizon -
> openstack_dashboard [2]
>
>             error_message = ungettext_lazy(
>                 'The requested instance cannot be launched as you only '
>                 'have %(avail)i of your quota available. ',
>                 'The requested %(req)i instances cannot be launched as you '
>                 'only have %(avail)i of your quota available.',
>                 count)
>             params = {'req': count,
>                       'avail': available_count}
>
> In i18n translation infrastructure, only one of two (for singular and
> plural) strings should be
> selected, translated, saved, and finally imported back to Horizon project as
> [1].
> However, the first string only used "%(avail)i" string variable,
> and the second string used both "%(req)i" and "%(avail)i" string variables.
>
> Since one Korean translator selected the first string, there will be no
> "%(req)i" in Korean po file, which generates such an error.
> So my suggestion is to use the same string variables for both two strings
> when we use ungettext_lazy function.
>
> Is it a bug from Horizon? Would it be other issues when we change like
> : from 'The requested instance cannot be launched as you only ' to 'The
> requested %(req)i instance cannot be launched as you only '?
>
>
> [1]
> http://logs.openstack.org/periodic/horizon-propose-translation-update/c038aab/console.html#_2016-09-16_07_37_22_312092
> [2]
> http://git.openstack.org/cgit/openstack/horizon/tree/openstack_dashboard/dashboards/project/instances/workflows/create_instance.py#n214
>
>
> With many thanks,
>
> /Ian
>
> _______________________________________________
> OpenStack-I18n mailing list
> openstack-i...@lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-i18n

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