function bbp_format_activity_action_new_post( $type = '', $action = '', $activity = false ) {

	// Get actions
	$actions = bbp_get_activity_actions();

	// Bail early if we don't have a valid type
	if ( ! in_array( $type, array_keys( $actions ), true ) ) {
		return $action;
	}

	// Bail if intercepted
	$intercept = bbp_maybe_intercept( __FUNCTION__, func_get_args() );
	if ( bbp_is_intercepted( $intercept ) ) {
		return $intercept;
	}

	// Groups component
	if ( 'groups' === $activity->component ) {
		if ( 'topic' === $type ) {
			$topic_id = bbp_get_topic_id( $activity->secondary_item_id );
			$forum_id = bbp_get_topic_forum_id( $topic_id );
		} else {
			$topic_id = bbp_get_reply_topic_id( $activity->secondary_item_id );
			$forum_id = bbp_get_topic_forum_id( $topic_id );
		}

	// General component (bbpress/forums/other)
	} else {
		if ( 'topic' === $type ) {
			$topic_id = bbp_get_topic_id( $activity->item_id );
			$forum_id = bbp_get_forum_id( $activity->secondary_item_id );
		} else {
			$topic_id = bbp_get_topic_id( $activity->secondary_item_id );
			$forum_id = bbp_get_topic_forum_id( $topic_id );
		}
	}

	// User link for topic author
	$user_link = bbp_get_user_profile_link( $activity->user_id );

	// Topic link
	$topic_permalink = bbp_get_topic_permalink( $topic_id );
	$topic_title     = get_post_field( 'post_title', $topic_id, 'raw' );
	$topic_link      = '<a href="' . esc_url( $topic_permalink ) . '">' . esc_html( $topic_title ) . '</a>';

	// Forum link
	$forum_permalink = bbp_get_forum_permalink( $forum_id );
	$forum_title     = get_post_field( 'post_title', $forum_id, 'raw' );
	$forum_link      = '<a href="' . esc_url( $forum_permalink ) . '">' . esc_html( $forum_title ) . '</a>';

	// Format
	$activity_action = sprintf( $actions[ $type ], $user_link, $topic_link, $forum_link );

	/**
	 * Filters the formatted activity action new activity string.
	 *
	 * @since 2.6.0 bbPress (r6370)
	 *
	 * @param string               $activity_action Activity action string value
	 * @param string               $type            The type of post. Expects `topic` or `reply`.
	 * @param string               $action          The current action string.
	 * @param BP_Activity_Activity $activity        The BuddyPress activity object.
	 */
	return apply_filters( 'bbp_format_activity_action_new_post', $activity_action, $type, $action, $activity );
}