Has there been experiments with 7zip for deb packages

Shimon shimen at gmail.com
Tue Jan 18 21:21:49 CST 2005

time for a dpkg hack to support 7zip?

On Wed, 19 Jan 2005 00:22:01 +0000 (GMT), Paul Sladen
<ubuntu at paul.sladen.org> wrote:
> On Tue, 18 Jan 2005, Kristof Vansant wrote:
> Hello Kristof,
> > Giuseppe from Mdk pointed me at: 7zip [..] which (apparently) gives a
> > 20% size reduction on an OO.o source archive over bzip2 -
> It's something that probably warrants further investigation;  although I
> think people may have been avoiding it because of a patent issue in one of
> the algorithms it's using.  (I don't know more details).
> I did see references to it in the ''Advanced Compressor'' in the cloop-utils
> suite used for building the LiveCD.
> One of the reasons 7zip probably doing so well on OOo is because of the
> duplication in the XML files across languages being handled by the variable
> dictionary size (gzip==32kB, bzip2 == 965kB after block rearranging, 7zip ==
> unlimited) allowing it effectively to do the same as I experiemented with
> manually:
>   http://www.ubuntulinux.org/wiki/HoaryHedgehogOpenOfficeL10nCompression
> (I got a 33% ish saving when I last investigated.  However I think haggai
> said that OOo2 uses a different setup).  It might be interesting to see what
> can be archived with both techniques, but one of the things are the front of
> Ubuntu's mind is providing a Free distribution and such a fundamental tool
> can probably not be seen to have patent problems in any particular counties.
>         -Paul
> --
> Is there no safe way to travel?  London, GB
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>From the desk of shimon.

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