es-ckeditor/plugins/shortUrl/lang/en.js

CKEditor-based implementation and add some plugins, For example kityformula etc.

CKEDITOR.plugins.setLang( 'shortUrl', 'en', {
    title: 'Convert to short url',
    empty_error: 'The URL can not be empty',
    max_error: 'Add a short URL to the limit',
    toolbar: 'Short URL'
} );