Allowing ',' in URL of Linked Applications

[RoBo]

When I try to add URL http://extensions.joomla.org/component/option,com_mtree/task,viewlink/link_id,122/Itemid,35/ to the Project Admin->Linked applications list on the sourceforge (for example), i receive following error:

The URL was invalid. Make sure that the protocol is included (http://, https://, or ftp://)

After acknowledging this dialog box (by pressing OK) i am presented a page with this text:

/^(([Ff][Tt][Pp]|[Hh][Tt][Tt][Pp][Ss]?):\/\/[\w\-\.]+(:\d+)?([\?\/][\/\w\.\+\=\:\-\?\%&]*)*)$/

Since this looks like a UNIX expression, I think this message is probably due to having some ',' within it.
When a ',' is also allowed people can link to specific pages within their site without having SEF enabled.