[wp-trac] [WordPress Trac] #59387: Add writing-mode as an allowed attribute to safecss_filter_attr()

[WordPress Trac]

#59387: Add writing-mode as an allowed attribute to safecss_filter_attr()
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 Reporter:  wildworks                |       Owner:  (none)
     Type:  defect (bug)             |      Status:  new
 Priority:  normal                   |   Milestone:  6.4
Component:  General                  |     Version:
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-refresh  |     Focuses:
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Comment (by wildworks):

 I submitted `patch-1.diff` with added `@since` annotation.

 There was a typo in the comment text of the phpunit test, so I fixed it at
 the same time (`// Wiritng mode introduced in 6.4.` > `// Writing mode
 introduced in 6.4.`).

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Ticket URL: <https://core.trac.wordpress.org/ticket/59387#comment:4>
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