[wp-trac] [WordPress Trac] #34350: Update Backbone to 1.2.3 and Underscore to 1.8.3

[WordPress Trac]

#34350: Update Backbone to 1.2.3 and Underscore to 1.8.3
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 Reporter:  caseypatrickdriscoll     |       Owner:  adamsilverstein
     Type:  enhancement              |      Status:  assigned
 Priority:  normal                   |   Milestone:  4.5
Component:  External Libraries       |     Version:  4.4
 Severity:  normal                   |  Resolution:
 Keywords:  needs-testing has-patch  |     Focuses:  javascript
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Comment (by ericlewis):

 Updated the diff in attachment:34350.4.diff after r36305.

 Replying to [comment:10 adamsilverstein]:
 > Can you test this patch to see if it resolves the issues you were seeing
 in media? subviews should now get their ready events fired which should
 help!

 This seems to come and go, but I can still reproduce this. Clicking Add
 New in the Media Library does nothing. I see that the
 [https://github.com/aaronjorbin/develop.wordpress/blob/37dfbef847bd5f4507b3855c24dd747f534e0c4d/src
 /wp-includes/js/media/views/attachments/browser.js#L41 listenTo is
 invoked] which should set up event binding, and the
 [https://github.com/aaronjorbin/develop.wordpress/blob/37dfbef847bd5f4507b3855c24dd747f534e0c4d/src
 /wp-includes/js/media/views/frame/manage.js#L189-L192 clickhandler gets
 fired] which triggers the event, but something's getting mucked up in
 between.

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Ticket URL: <https://core.trac.wordpress.org/ticket/34350#comment:20>
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