[wp-trac] [WordPress Trac] #22080: add_theme_support should merge post-thumbnail post types by default (currently stomps)

[WordPress Trac]

#22080: add_theme_support should merge post-thumbnail post types by default
(currently stomps)
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 Reporter:  alexkingorg          |       Owner:
     Type:  enhancement          |      Status:  new
 Priority:  normal               |   Milestone:  Future Release
Component:  Post Thumbnails      |     Version:  2.9
 Severity:  normal               |  Resolution:
 Keywords:  has-patch 3.6-early  |
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Comment (by husobj):

 Just to add in another couple of reasons why I think this fix is needed:

 1. If you build a child theme, you may add additional post-thumbnails
 support for post types that are not supported by the parent theme,
 therefore you would expect add_theme_support() to merge rather than
 replace.

 2. Many plugins (ecommerce is a particularly good example) now add their
 own 'theming' structure so they can work out-of-the-box with no template
 changes. It would be ideal if they could benefit from using the core Post
 Thumbnail admin UI without having to resort to a custom solution.

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Ticket URL: <http://core.trac.wordpress.org/ticket/22080#comment:22>
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