If you have a subversion repository using the new svn externals (such as relative URLs), cc.rb says error when it tries to check the working copy to see if it's up to date.

For example, this is fine:
external_path svn://rubyforge.org/var/svn/cruisecontrolrb/trunk/daemon

but this will break cc.rb:
^/passing_project caret_external

The arguments in the new format have been reversed, and cc.rb doesn't know how to handle it. Also, building the svn URL for the external is no longer straightforward. cc.rb would have to handle relative URLs and URLs rooted at the repository (such as the example above).