[wp-trac] [WordPress Trac] #27931: HTML Editor Removes Schema (Span) Tags

[WordPress Trac]

#27931: HTML Editor Removes Schema (Span) Tags
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 Reporter:  slightlyconcernedcitizen  |       Owner:
     Type:  defect (bug)              |      Status:  new
 Priority:  normal                    |   Milestone:  3.9.2
Component:  TinyMCE                   |     Version:  3.9
 Severity:  normal                    |  Resolution:
 Keywords:                            |     Focuses:
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Comment (by azaozz):

 None of these are valid HTML (4 or 5) attributes. What seems to happen is
 MCE removes invalid attributes, then the spans are without any attributes
 and are removed. If there is a valid attribute on a span, it is not
 removed.

 TinyMCE can be set to keep "invalid" attributes on the <span> tags with
 the `extended_valid_elements` setting, probably a plugin material?

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Ticket URL: <https://core.trac.wordpress.org/ticket/27931#comment:6>
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