'undo-failure' => 'The edit could not be undone due to conflicting intermediate edits.',
'undo-norev' => 'The edit could not be undone because it does not exist or was deleted.',
'undo-summary' => 'Undo revision $1 by [[Special:Contributions/$2|$2]] ([[User talk:$2|talk]])',
+'undo-summary-username-hidden' => 'Undo revision $1 by a hidden user',
# Account creation failure
'cantcreateaccounttitle' => 'Cannot create account',
'reuploaddesc' => 'Cancel upload and return to the upload form',
'upload-tryagain' => 'Submit modified file description',
'uploadnologin' => 'Not logged in',
-'uploadnologintext' => 'You must be [[Special:UserLogin|logged in]] to upload files.',
+'uploadnologintext' => 'You must $1 to upload files.',
'upload_directory_missing' => 'The upload directory ($1) is missing and could not be created by the webserver.',
'upload_directory_read_only' => 'The upload directory ($1) is not writable by the webserver.',
'uploaderror' => 'Upload error',