insert cross-domain internal page link into WYSIWYG

[gerritvanaaken]

My client has 4 domains in use and sometimes wants to set a cross-link from one domains’ page to another domain’s page. When he uses the internal page picker (see screenshot), the address is generated as relative, starting with "/" instead of the domain of the linked page.

Any thoughts how we might fix this problem, other than writing a TextFormattor that detects any internal links, checks their domains and adds that domain? This sounds not very elegant to me.