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wordpress-develop/tests
Sergey Biryukov 6d1381180b KSES: Allow filter property to accept a URL in safecss_filter_attr().
CSS filters can accept `url()` as a reference to an SVG filter element:
{{{
filter: url( file.svg#filter-element-id );
}}}
This commit allows for that syntax to be used in inline CSS.

Original PR from Gutenberg repository:
* [https://github.com/WordPress/gutenberg/pull/48281 #48281 Duotone: Use the style engine to generate CSS for Duotone]

References:
* [https://developer.mozilla.org/en-US/docs/Web/CSS/filter MDN Web Docs: filter()]
* [https://developer.mozilla.org/en-US/docs/Web/CSS/url MDN Web Docs: url()]

Follow-up to [44136], [52049].

Props scruffian, jeryj, ironprogrammer, azaozz, hellofromTonya, SergeyBiryukov.
Fixes #57780.

git-svn-id: https://develop.svn.wordpress.org/trunk@55564 602fd350-edb4-49c9-b593-d223f7449a82
2023-03-20 08:23:47 +00:00
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