Re: confused about preserved permissions

From: David Kastrup <dak@gnu.org>
Date: Aug 20, 2007, 21:03 UTC
Message-ID: <85k5rpor4n.fsf@lola.goethe.zz>
In-Reply-To: <20070820205042.GB10173@glandium.org>

Mike Hommey <mh@glandium.org> writes:

Show 13 quoted lines

> On Mon, Aug 20, 2007 at 10:39:57PM +0200, David Kastrup <dak@gnu.org> wrote:
>> > And it has permissions associated with these hashes.
>> 
>> No, with the files.  Think again: the link between file system and
>> repository is the index, and the current index format has no
>> representation for trees or directories.
>> 
>> So git _can't_ store any information about a _directory_, since no
>> information about directories passes through the index.
>
> If, as Jan suggested in a previous message, you introduce
> directories in the index, I still don't see why you would need two
> entries in the tree object...

As I already said: you don't. It may just be _convenient_ in the _index_ for doing single pass merge collision detection (when a directory is replaced by a file or vice versa). But there would be no additional information stored in the index, and it definitely would not be worth to do double entries in the repository: the repository is already capable of representing all the desired information and it would be wasteful to introduce any complications there when the current format already is fine.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum