[wp-trac] [WordPress Trac] #21873: Visual editor removes valid HTML5 attributes (required, autofocus, placeholder)

[WordPress Trac]

#21873: Visual editor removes valid HTML5 attributes (required, autofocus,
placeholder)
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 Reporter:  chirael          |       Type:  defect (bug)
   Status:  new              |   Priority:  normal
Milestone:  Awaiting Review  |  Component:  Editor
  Version:  3.4.2            |   Severity:  normal
 Keywords:                   |
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 In HTML editing mode I have a few input fields that I've added the HTML5
 required and placeholder attributes to, and one that I added autofocus to.

 When I switched the page to Visual editing mode, and then clicked Update,
 I noticed that my page no longer worked as expected, so then when I
 clicked back to HTML editing mode, those attributes had been deleted.

 Since they are valid HTML5 attributes I don't think WP should be removing
 them.

 (It may remove other HTML5 attributes as well, I haven't checked)

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Ticket URL: <http://core.trac.wordpress.org/ticket/21873>
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