wp-includes/blocks.php:2243Renders inner blocks from the allowed wrapper blocks for generating an excerpt.
$parsed_blockarray$allowed_blocksarraystringfunction _excerpt_render_inner_blocks( $parsed_block, $allowed_blocks ) { $output = ''; foreach ( $parsed_block['innerBlocks'] as $inner_block ) { if ( ! in_array( $inner_block['blockName'], $allowed_blocks, true ) ) { continue; } if ( empty( $inner_block['innerBlocks'] ) ) { $output .= render_block( $inner_block ); } else { $output .= _excerpt_render_inner_blocks( $inner_block, $allowed_blocks ); } } return $output;}Introduced in 5.8.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/blocks.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.