[Koha-bugs] [Bug 21156] Internationalization: plural forms, context, and more for JS files

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=21156

--- Comment #3 from Julian Maurice <julian.maurice at biblibre.com> ---
(In reply to Katrin Fischer from comment #2)
> 1. Add a translatable string in a JS file. For example, add this:
>      alert(__nx("There is one item", "There are {count} items", 3,
>      {count: 3}));
> 
> It looks like we already have a way of doing this with the format() syntax.
Variable substitution works the same way as format() but allows to give names
to substitutions, to ease the work of translators (ex: "I like {food} and
{drink}" is easier to read and translate than "I like %s and %s")

> How would plural translation work? Can you give examples for context and
> plurals?
For plural translation, gettext will select the correct string based on the
integer parameter (the 3rd for __n and __nx, the 4th for __np and __npx) and
the Plural-Forms header in the PO file
For instance,
  var count = <a positive integer>
  __n('item', 'items', count)

In English, __n will return 'item' if count == 1, 'items' otherwise
In French, __n will return 'exemplaire' if count == 0 or count == 1,
'exemplaires' otherwise, because Plural-Forms is "nplurals=2; plural=(n > 1);
In Slovenian, __n can return up to 4 different strings, because Slovenian has 4
different "plural forms"

The context is just another string to help disambiguation. Ex:
  __p('Bibliographic record', 'item')

This will appear in the po file as
  msgctxt "Bibliographic record"
  msgid "item"

And you can combine context and plural forms
  __np('Bibliographic record', 'item', 'items', count)

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