/** @var $formatter RCFeedFormatter */
$formatter = is_object( $feed['formatter'] ) ? $feed['formatter'] : new $feed['formatter']();
$line = $formatter->getLine( $feed, $this, $actionComment );
+ if ( !$line ) {
+ // T109544
+ // If a feed formatter returns null, this will otherwise cause an
+ // error in at least RedisPubSubFeedEngine.
+ // Not sure where/how this should best be handled.
+ continue;
+ }
$engine->send( $feed, $line );
}