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событие не описано

comment_loop_start хук-событие . WP 2.2.0

Fires once the comment loop is started.

Использование

add_action( 'comment_loop_start', 'action_function_name_3495' );
function action_function_name_3495(){
	// action...
}

Где используется хук

Код хука

Фрагмент из: wp-includes/class-wp-query.php VER 4.9.7
...
	 *
	 * @since 2.2.0
	 * @global WP_Comment $comment Current comment.
	 */
	public function the_comment() {
		global $comment;

		$comment = $this->next_comment();

		if ( $this->current_comment == 0 ) {
			/**
			 * Fires once the comment loop is started.
			 *
			 * @since 2.2.0
			 */
			do_action( 'comment_loop_start' );
		}
	}

	/**
	 * Whether there are more comments available.
	 *
	 * Automatically rewinds comments when finished.
	 *
	 * @since 2.2.0
	 *
	 * @return bool True, if more comments. False, if no more posts.
	 */
	public function have_comments() {
		if ( $this->current_comment + 1 < $this->comment_count ) {
			return true;
...