[wp-trac] [WordPress Trac] #56353: Allow assigning CSS variables in safecss_filter_attr

[WordPress Trac]

#56353: Allow assigning CSS variables in safecss_filter_attr
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 Reporter:  aristath                  |       Owner:  SergeyBiryukov
     Type:  defect (bug)              |      Status:  closed
 Priority:  normal                    |   Milestone:  6.1
Component:  Formatting                |     Version:
 Severity:  normal                    |  Resolution:  fixed
 Keywords:  has-patch has-unit-tests  |     Focuses:
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Changes (by SergeyBiryukov):

 * owner:  (none) => SergeyBiryukov
 * status:  new => closed
 * resolution:   => fixed


Comment:

 In [changeset:"54117" 54117]:
 {{{
 #!CommitTicketReference repository="" revision="54117"
 KSES: Allow assigning values to CSS variables.

 The `safecss_filter_attr()` function allows using custom CSS variables
 like `color: var(--color)`. However, it did not allow assigning values to
 CSS variables like `--color: #F00`, which is common in Global Styles and
 Gutenberg.

 This commit adds support for assigning values to CSS variables, so that
 the function can be used consistently in Global Styles and the future
 Style Engine in Gutenberg.

 Follow-up to [50923], [54100].

 Props aristath, ramonopoly, SergeyBiryukov.
 Fixes #56353.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/56353#comment:9>
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