Yeah, I never really tested it or anything, so be warned. The one time I did try to do it, by putting up something I did from scratch, it downloaded it but then had a script execution error. Not sure if this is a permissions thing.
I'll probably put it up on SourceForge. If any interested Java people want to join the project, let me know and I'll add you. (If anyone wants to lead the project, also let me know...I'm bailing on it.)
It should be fairly easy for someone to implement the following:
* Checking inside ZIP (where applicable) for the Info.plist, and parsing pertinent info from that.
* A script tool
* A non-user-hostile GUI
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UPDATE:
It's up on SF:
http://sourceforge.net/projects/repokeep/
Developers needed.