[tor-bugs] #25580 [Applications/Tor Browser]: Torbutton should trigger Tor Browser auto update when it starts and it knows it's out of date

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#25580: Torbutton should trigger Tor Browser auto update when it starts and it
knows it's out of date
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 Reporter:  arma                      |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  ux-team                   |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by mcs):

 I don't fully understand what change to the existing behavior is being
 requested. If the browser has already downloaded an update, the current
 behavior is that it will be applied during startup. On the other hand, if
 the browser has not finished downloading a pending update, then it will
 not update during startup. To do so, it would need to pause the browser
 startup process, present some UI while the download of the MAR file
 finishes, and then apply the update and start up. That second scenario is
 not something that Firefox supports, so it would probably be a lot of work
 to implement it.

 A side note: once Tor Browser notices that an update is needed, it
 immediately starts to download the required MAR file. This can take some
 time — especially over Tor — but hopefully in most cases the MAR file is
 fully downloaded before users exit or restart their browser.  If that is
 usually the case, this ticket is less urgent than if not.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25580#comment:6>
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