[wp-trac] [WordPress Trac] #47389: Display warning message on the Updates screen when a VCS is in use

[WordPress Trac]

#47389: Display warning message on the Updates screen when a VCS is in use
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 Reporter:  johnbillion      |      Owner:  (none)
     Type:  enhancement      |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  Upgrade/Install  |    Version:  3.7
 Severity:  normal           |   Keywords:  needs-patch
  Focuses:                   |
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 When a version control system is in use, an appropriate warning message
 should be shown on the Updates screen, recommending that updates be
 performed via their VCS instead. The update action shouldn't be blocked,
 though.

 Similarly, for every plugin and theme that has an update available,
 WordPress should check whether the individual plugin or theme's directory
 is under version control and present a similar warning because updating a
 plugin or theme will completely wipe out its directory, therefore allowing
 version history to be lost.

 The `WP_Upgrader::is_vcs_checkout( ... )` method can be used to detect VCS
 usage.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47389>
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