1 files changed, 10 insertions, 1 deletions
diff --git a/includes/api/ApiQueryDuplicateFiles.php b/includes/api/ApiQueryDuplicateFiles.php
index 719367538538..90c345c4a801 100644
--- a/includes/api/ApiQueryDuplicateFiles.php
+++ b/includes/api/ApiQueryDuplicateFiles.php
@@ -94,7 +94,8 @@ class ApiQueryDuplicateFiles extends ApiQueryGeneratorBase {
 			);
 		}
 
-		$this->addOption( 'ORDER BY', 'i1.img_name' );
+		$dir = ( $params['dir'] == 'descending' ? ' DESC' : '' );
+		$this->addOption( 'ORDER BY', 'i1.img_name' . $dir );
 		$this->addOption( 'LIMIT', $params['limit'] + 1 );
 
 		$res = $this->select( __METHOD__ );
@@ -141,6 +142,13 @@ class ApiQueryDuplicateFiles extends ApiQueryGeneratorBase {
 				ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 			),
 			'continue' => null,
+			'dir' => array(
+				ApiBase::PARAM_DFLT => 'ascending',
+				ApiBase::PARAM_TYPE => array(
+					'ascending',
+					'descending'
+				)
+			),
 		);
 	}
 
@@ -148,6 +156,7 @@ class ApiQueryDuplicateFiles extends ApiQueryGeneratorBase {
 		return array(
 			'limit' => 'How many files to return',
 			'continue' => 'When more results are available, use this to continue',
+			'dir' => 'The direction in which to list',
 		);
 	}