[wp-trac] [WordPress Trac] #35102: Responsive images support for external URLs

[WordPress Trac]

#35102: Responsive images support for external URLs
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 Reporter:  polevaultweb             |       Owner:  joemcgill
     Type:  defect (bug)             |      Status:  reviewing
 Priority:  normal                   |   Milestone:  4.4.1
Component:  Media                    |     Version:  4.4
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:
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Changes (by joemcgill):

 * owner:   => joemcgill
 * status:  new => reviewing


Comment:

 Thanks for the report @polevaultweb. Can you give more information about
 how your plugin replaces the local URLs? If you can point me to some code
 that I could look at, that would be helpful as well.

 WordPress makes use of the attachment ID information found in the class
 attribute of the image markup to decide which alternate image sizes should
 be loaded in a `srcset` attribute. To avoid loading the wrong images when
 the ID is incorrect (e.g., if the markup was imported from another WP
 installation), we check to make sure the image `src` matches one of the
 image sizes listed in the attachment metadata for that ID. See #34898 and
 a related bug that might be causing issues for you #35045.

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Ticket URL: <https://core.trac.wordpress.org/ticket/35102#comment:4>
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