[wp-trac] [WordPress Trac] #34328: Language pack is not installed when updating a plugin

[WordPress Trac]

#34328: Language pack is not installed when updating a plugin
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 Reporter:  johnbillion   |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  I18N          |    Version:  3.7
 Severity:  normal        |   Keywords:
  Focuses:                |
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 My plan is to release an update one of my plugins which removes all the
 bundled language files so that language packs can be used instead. This is
 so that translations can be updated independently of the plugin.

 I'm prevented from doing so because when a user updates a plugin on their
 site, the corresponding language pack for their selected language does not
 get installed. This means a user who was previously using my plugin on a
 (for example) French site will no longer have a French translation for my
 plugin until they manually visit the Updates screen and update their
 translations.

 When a plugin update is performed, its language pack for the site's
 selected language should be installed, in addition to it being updated if
 it's already installed.

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Ticket URL: <https://core.trac.wordpress.org/ticket/34328>
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