$this->addOption( 'extensions-dir', 'Path where extensions can be found.', false, true );
$this->addOption( 'output', 'Send output to this file (omit for stdout)', false, true );
$this->mDescription = 'Merge $wgExtensionMessagesFiles and $wgMessagesDirs from ' .
$this->addOption( 'extensions-dir', 'Path where extensions can be found.', false, true );
$this->addOption( 'output', 'Send output to this file (omit for stdout)', false, true );
$this->mDescription = 'Merge $wgExtensionMessagesFiles and $wgMessagesDirs from ' .