global $wgContLang;
$prefix = $wgContLang->getFormattedNsText( $title->getNamespace() );
+ // @todo Emit some kind of warning to the user if $title->getNamespace() !==
+ // NS_MAIN and $prefix === '' (viz. pages in an unregistered namespace)
+
if ( $prefix !== '' ) {
$prefix .= ':';
}