Merge "Drop zh-tw message "saveprefs""

[lhc/web/wiklou.git] / includes / filerepo / file / File.php

diff --git a/includes/filerepo/file/File.php b/includes/filerepo/file/File.php
index 3677a14..f40d216 100644 (file)
--- a/includes/filerepo/file/File.php
+++ b/includes/filerepo/file/File.php
@@ -213,14 +213,15 @@ abstract class File implements IDBAccessObject {
        }
 
        /**
-        * Normalize a file extension to the common form, and ensure it's clean.
-        * Extensions with non-alphanumeric characters will be discarded.
+        * Normalize a file extension to the common form, making it lowercase and checking some synonyms,
+        * and ensure it's clean. Extensions with non-alphanumeric characters will be discarded.
+        * Keep in sync with mw.Title.normalizeExtension() in JS.
         *
-        * @param string $ext (without the .)
-        * @return string
+        * @param string $extension File extension (without the leading dot)
+        * @return string File extension in canonical form
         */
-       static function normalizeExtension( $ext ) {
-               $lower = strtolower( $ext );
+       static function normalizeExtension( $extension ) {
+               $lower = strtolower( $extension );
                $squish = array(
                        'htm' => 'html',
                        'jpeg' => 'jpg',