Line breaks in TabHeader.tpl comes out wrong

A text string from /templates/CRM/common/TabHeader.tpl comes out wrong at Transifex translation service. It shows like this:
ConfirmnnAre you sure you want to navigate away from this tab?nnYou have unsaved changes.nnPress OK to continue, or Cancel to stay on the current tab.

Transifex:
https://www.transifex.net/projects/p/civicrm/resource/common-base/l/da/

I've checked trunk version + 3.4 + 4.2. They look the same, see below.

http://svn.civicrm.org/civicrm/trunk/templates/CRM/common/TabHeader.tpl
var message = '

{/literal}{ts escape="js"}Confirm\n\nAre you sure you want to navigate away from this tab?\n\nYou have unsaved changes.\n\nPress OK to continue, or Cancel to stay on the current tab.{/ts}{literal}';

http://svn.civicrm.org/civicrm/branches/v4.2/templates/CRM/common/TabHeader.tpl
var message = '{/literal} {ts escape="js"}Confirm\n\nAre you sure you want to navigate away from this tab?\n\nYou have unsaved changes.\n\nPress OK to continue, or Cancel to stay on the current tab.{/ts}{literal}';

http://svn.civicrm.org/civicrm/branches/v3.4/templates/CRM/common/TabHeader.tpl
var message = '{/literal}{ts escape="js"}

Confirm\n\nAre you sure you want to navigate away from this tab?\n\nYou have unsaved changes.\n\nPress OK to continue, or Cancel to stay on the current tab.

{/ts} {literal}

';