Is it possible to store only new version of some files in repo ?

[Stephen J. Turnbull]

Kan Liu writes:

 > Is it possible to store only new version of some files in repo? And how to
 > do so?
 > For example, I want to keep  only new version of *.so and *.jpg files in
 > code tree.

If by code tree you mean a repository containing history, this isn't
possible with bzr (or any other VCS written since CVS), and it
normally isn't wise to throw away any history that has ever been
released outside your repository.  If you describe your reasons for
this request in more detail (frequency of change in and size of
"undesirable" files; how they are acquired: generated, written by your
people, received from external source; etc) perhaps somebody can help
you devise a way to deal with it in a safe, relatively space-efficient
way.