if (Message::contentTooLong($content_shortened)) {
$this->clientError(
// TRANS: Client error displayed when message content is too long.
if (Message::contentTooLong($content_shortened)) {
$this->clientError(
// TRANS: Client error displayed when message content is too long.
} else if (!$this->user->mutuallySubscribed($this->other)) {
$this->clientError(
// TRANS: Client error displayed trying to direct message another user who's not a friend (403).
} else if (!$this->user->mutuallySubscribed($this->other)) {
$this->clientError(
// TRANS: Client error displayed trying to direct message another user who's not a friend (403).