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<?php
/**
* Adds the wp-block-list class to the rendered list block.
*
* @package WordPress
*/
/**
* Adds the wp-block-list class to the rendered list block.
* Ensures that pre-existing list blocks use the class name on the front.
* For example, <ol> is transformed to <ol class="wp-block-list">.
*
* @since 6.6.0
*
* @see https://github.com/WordPress/gutenberg/issues/12420
*
* @param array $attributes Attributes of the block being rendered.
* @param string $content Content of the block being rendered.
*
* @return string The content of the block being rendered.
*/
function block_core_list_render( $attributes, $content ) {
if ( ! $content ) {
return $content;
}
$processor = new WP_HTML_Tag_Processor( $content );
$list_tags = array( 'OL', 'UL' );
while ( $processor->next_tag() ) {
if ( in_array( $processor->get_tag(), $list_tags, true ) ) {
$processor->add_class( 'wp-block-list' );
break;
}
}
return $processor->get_updated_html();
}
/**
* Registers the `core/list` block on server.
*
* @since 6.6.0
*/
function register_block_core_list() {
register_block_type_from_metadata(
__DIR__ . '/list',
array(
'render_callback' => 'block_core_list_render',
)
);
}
add_action( 'init', 'register_block_core_list' );