Re: [PATCH] prune: --expire=time

On Sun, Jan 21, 2007 at 03:17:07AM -0800, Junio C Hamano wrote:

If we wanted to apply this grace period conservatively,
protecting young objects is not enough.  You need to protect
everything they refer to as well.  In the above scenario, you

That's not sufficient either. You might not _have_ the young objects
yet, think the blob is dangling, and delete it. Meanwhile, the tree that
references it arrives. IOW,
  1. blob B arrives, but already exists
  2. prune deletes unreference and old blob B
  3. tree T arrives, referencing blob B
I think this might be safe if you add objects in a top-down way (i.e., T
before B). However, that doesn't make sense for the commit operation, in
which you add blobs (with git-add), and then eventually construct a
tree.

-Peff