wp-includes/block-supports/custom-css.php:301Registers the custom CSS content filters if the user does not have the edit_css capability.
function wp_custom_css_kses_init() { wp_custom_css_remove_filters(); if ( ! current_user_can( 'edit_css' ) ) { wp_custom_css_kses_init_filters(); }}Introduced in 7.0.0. Unchanged from 7.0.4 through 7.1.0.
Signature, return type and hooks compared across 2 parsed releases.
src/wp-includes/block-supports/custom-css.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.