$prop = array_flip( (array)$params['prop'] );
$show = array_flip( (array)$params['show'] );
if ( isset( $show['changed'] ) && isset( $show['!changed'] ) )
- $this->dieUsageMsg( 'show' );
+ $this->dieUsageMsg( array( 'show' ) );
$this->addTables( 'watchlist' );
$this->addFields( array( 'wl_namespace', 'wl_title' ) );