Use the following command to compile GetText PO (portable object) files. This takes care of handling string values in different languages (you will see comparable output):

$sudo -u git -H bundle exec rake gettext:compile RAILS_ENV=production

Created app.js in /home/git/gitlab/app/assets/javascripts/locale/ja
Created app.js in /home/git/gitlab/app/assets/javascripts/locale/eo
Created app.js in /home/git/gitlab/app/assets/javascripts/locale/zh_HK
Created app.js in /home/git/gitlab/app/assets/javascripts/locale/fil_PH
Created app.js in /home/git/gitlab/app/assets/javascripts/locale/ar_SA
Created app.js in /home/git/gitlab/app/assets/javascripts/locale/en
..