On Fri, Apr 15, 2005 at 08:32:46AM -0700, Linus Torvalds wrote:
In other words, I'm right. I'm always right, but sometimes I'm more
than other times. And dammit, when I say "files don't matter", I'm
really Right(tm).

You're right, of course (All Hail Linus!), if you can make it work
efficiently enough.

Just to put something else on the table, here's how I'd go about
tracking renames and the like, in another world where Linus /does/
make the odd mistake - it's basically a unique id for files in the
repository, added when the file is first recognised and updated when
update-cache adds a new version to the cache. Renames copy the id
across to the new name, and add it into the cache.

This gives you an O(n) way to tell what file was what across
renames, and it might even be useful in Linus' world, or if someone
wanted to build a traditional SCM on top of a git-a-like.

Attached is a patch, and a rename-file.c to use it.


given that you have multiple machines creating files, how do you deal with the idea of the same 'unique id' being assigned to different files by different machines?

David Lang

There are two ways of constructing a software design. One way is to make it so 
simple that there are obviously no deficiencies. And the other way is to make 
it so complicated that there are no obvious deficiencies.
 -- C.A.R. Hoare
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