wp-includes/block-supports/layout.php:1164For themes without theme.json file, make sure to restore the outer div for the aligned image block to avoid breaking styles relying on that div.
$block_contentstring$blockarraystringfunction wp_restore_image_outer_container( $block_content, $block ) { if ( wp_theme_has_theme_json() ) { return $block_content; } $figure_processor = new WP_HTML_Tag_Processor( $block_content ); if ( ! $figure_processor->next_tag( 'FIGURE' ) || ! $figure_processor->has_class( 'wp-block-image' ) || ! ( $figure_processor->has_class( 'alignleft' ) || $figure_processor->has_class( 'aligncenter' ) || $figure_processor->has_class( 'alignright' ) ) ) { return $block_content; } /* * The next section of code wraps the existing figure in a new DIV element. * While doing it, it needs to transfer the layout and the additional CSS * class names from the original figure upward to the wrapper. * * Example: * * // From this… * <!-- wp:image {"className":"hires"} --> * <figure class="wp-block-image wide hires">… * * // To this… * <div class="wp-block-image hires"><figure class="wide">… */ $wrapper_processor = new WP_HTML_Tag_Processor( '<div>' ); $wrapper_processor->next_token(); $wrapper_processor->set_attribute( 'class', is_string( $block['attrs']['className'] ?? null ) ? "wp-block-image {$block['attrs']['className']}" : 'wp-block-image' ); // And remove them from the existing content; it has been transferred upward. $figure_processor->remove_class( 'wp-block-image' ); foreach ( $wrapper_processor->class_list() as $class_name ) { $figure_processor->remove_class( $class_name ); } return "{$wrapper_processor->get_updated_html()}{$figure_processor->get_updated_html()}</div>";}Introduced in 6.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/block-supports/layout.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.