Tracking OpenOffice files/other compressed files with Git

Hi!

I find myself tracking OpenOffice files every now and then. Mostly to synchronise to be able to edit documents in multiple locations, less for the actual history.

I notice, however, that the Git history tend to grow quite a bit, especially for larger documents (I have a 175 kilobyte spredsheet that has a git database of about 8 megabytes).

Since OpenOffice doucuments are just zipped xml files, I wondered how difficult it would be to create some hooks/hack git to track the files inside the archives instead?

Alternatively, does anyone know if it is possible to set OpenOffice not to use compression for a saved document? If it was uncompressed text, I would think Git's delta compression would fare better.