[wp-trac] [WordPress Trac] #55966: safecss_filter_attr() returns empty if containing min()

[WordPress Trac]

#55966: safecss_filter_attr() returns empty if containing min()
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 Reporter:  uxl                       |       Owner:  (none)
     Type:  defect (bug)              |      Status:  new
 Priority:  normal                    |   Milestone:  6.1
Component:  Formatting                |     Version:  6.0
 Severity:  major                     |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:  css
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Comment (by johnregan3):

 @isabel_brison I've added support for commas, square brackets, and nested
 var()s.

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Ticket URL: <https://core.trac.wordpress.org/ticket/55966#comment:5>
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