$this->addOption( 'previous-collation', 'Set the previous value of ' .
'$wgCategoryCollation here to speed up this script, especially if your ' .
'categorylinks table is large. This will only update rows with that ' .
$this->addOption( 'previous-collation', 'Set the previous value of ' .
'$wgCategoryCollation here to speed up this script, especially if your ' .
'categorylinks table is large. This will only update rows with that ' .