All I would like from OpenDocument, and LibreOffice, is an ASCII storage format that is not specifically designed to be incompatible with revision control systems.

As it is, they have an almost-serviceable format that fails only by having each line start with a random number that differs from the number on the corresponding line that was originally read in.

Fixing it would not even be an incompatible change! They could just remember the number that was there, and write it back out, next time.

There is a report for this in their bug tracker that mentions SVN because there was no Git, yet, when it was posted.