wp_strip_inline_note_markers( string $block_content ): string

4575function wp_strip_inline_note_markers( $block_content ) {4576	if ( ! str_contains( $block_content, 'wp-note' ) ) {4577		return $block_content;4578	}4579 4580	/*4581	 * Anonymous subclass exposing token removal, which WP_HTML_Tag_Processor4582	 * does not provide publicly yet. Removing the current token via its bookmark4583	 * span unwraps the `<mark>` (opener or closer) while keeping the text it4584	 * wraps.4585	 */4586	$processor = new class( $block_content ) extends WP_HTML_Tag_Processor {4587		/**4588		 * Removes the current token, keeping any text it wraps.4589		 */4590		public function remove_token(): void {4591			// Always called after next_tag() returned true, so the bookmark is set.4592			$this->set_bookmark( 'here' );4593			$span = $this->bookmarks['here'];4594 4595			$this->lexical_updates[] = new WP_HTML_Text_Replacement( $span->start, $span->length, '' );4596		}4597	};4598 4599	/*4600	 * Walk every `<mark>`, tracking note nesting on a stack so each note opener4601	 * pairs with its own closer, and unwrap only the note markers.4602	 */4603	$mark_stack = array();4604	$query      = array(4605		'tag_name'    => 'MARK',4606		'tag_closers' => 'visit',4607	);4608	while ( $processor->next_tag( $query ) ) {4609		if ( $processor->is_tag_closer() ) {4610			$is_note = array_pop( $mark_stack );4611		} else {4612			$is_note      = $processor->has_class( 'wp-note' );4613			$mark_stack[] = $is_note;4614		}4615 4616		if ( true === $is_note ) {4617			$processor->remove_token();4618		}4619	}4620 4621	return $processor->get_updated_html();4622}