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Petr Baudis wrote:
quoted text
>> this only makes sense if
>> you have a fast access to the repository (otherwise, you consider your
>> local repository as a cache, and you're ready to pay the disk space
>> price to save your bandwidth). In this case, it's often in your
>> filesystem (local or NFS).
> 
> So how is the light checkout actually implemented? Do you grab the
> complete new snapshot each time the remote repository is updated?

No, the lightweight checkouts store very little.  They have
- - a copy of tree shape (filenames, paths, sha1 sums) from the last
  commit.
- - a copy of tree shape for the current working directory
- - a map from stat values to sha-1 hashes


quoted text
> Do all
> the (at least read-only, like "log" and "diff", perhaps "status")
> commands work on such a light checkout?

Yes.  And if you check out from a read-write branch, all write commands,
work, too.

Aaron
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