How to automatically fetch external svn resources on update?

Hi all

I know this isn't really a Rails related question, I'm sorry, but it's just that there's probably somebody here who knows an answer to my question without me having to explain it too exhaustively. :wink:

Well, I have several plugins in my vendor/plugins directory, of which some are automatically updated vis Subversion when updating the whole app. But some are not. So how can I change them to also automatically update, and how do I ensure that newly installed plugins will be updated in future, too?

Thanks for help :slight_smile: Josh

PS: I'm running OS X with command line SVN 1.4.4 installed.