[wp-trac] [WordPress Trac] #29297: Inconsistency for language dropdown and updates

[WordPress Trac]

#29297: Inconsistency for language dropdown and updates
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 Reporter:  pavelevap     |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  I18N          |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 I tried to test another language and copied `de_DE.mo` file into wp-
 content/languages.

 1) In Settings - General I can see `de_DE` version now and that is right.
 But when I try to use only `admin-de_DE.mo` file, then `de_DE` is not
 there. I am not sure if it is a feature or bug. But maybe we should check
 all files (subprojects)?

 2) Anyway, when there are both `de_DE.mo` and `admin-de_DE.mo`, language
 is available in dropdown, but language updates does not work for `de_DE`.
 It is probably for checking `.po` files by API. But is is not consistent,
 because users can see that they can switch to `de_DE` language and updates
 will not work.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29297>
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