wp-includes/formatting.php:5220Removes non-allowable HTML from parsed block attribute values when filtering in the post context.
$contentstring$allowed_htmlarray[]|string$allowed_protocolsstring[]stringfunction wp_pre_kses_block_attributes( $content, $allowed_html, $allowed_protocols ) { /* * `filter_block_content` is expected to call `wp_kses`. Temporarily remove * the filter to avoid recursion. */ remove_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10 ); $content = filter_block_content( $content, $allowed_html, $allowed_protocols ); add_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10, 3 ); return $content;}Introduced in 5.3.1. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/formatting.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.