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KSES: Remove the filter that makes filter a safe attribute #49488

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KSES: Remove the filter that makes filter a safe attribute #49488

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22 changes: 0 additions & 22 deletions lib/experimental/kses.php
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Original file line number Diff line number Diff line change
Expand Up @@ -66,28 +66,6 @@ function gutenberg_override_core_kses_init_filters() {
add_action( 'init', 'gutenberg_override_core_kses_init_filters', 20 );
add_action( 'set_current_user', 'gutenberg_override_core_kses_init_filters' );

/**
* See https://github.com/WordPress/wordpress-develop/pull/4108
*
* Mark CSS safe if it contains a "filter: url('#wp-duotone-...')" rule.
*
* This function should not be backported to core.
*
* @param bool $allow_css Whether the CSS is allowed.
* @param string $css_test_string The CSS to test.
*/
function allow_filter_in_styles( $allow_css, $css_test_string ) {
if ( preg_match(
"/^filter:\s*url\('#wp-duotone-[-a-zA-Z0-9]+'\) !important$/",
$css_test_string
) ) {
return true;
}
return $allow_css;
}

add_filter( 'safecss_filter_attr_allow_css', 'allow_filter_in_styles', 10, 2 );

/**
* Mark CSS safe if it contains grid functions
*
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