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From: Peter_Gutmann@kcbbs.gen.nz (Peter Gutmann)
Newsgroups: comp.compression
Subject: Re: ARJ and Jung are not all they seem
Message-ID: <1991May1.110226.10932@kcbbs.gen.nz>
Date: 1 May 91 11:02:26 GMT
Lines: 27
Organisation: Kappa Crucis Unix BBS, Auckland, New Zealand

lines: 26  
>If you will go back to ARJ version .20 the results from it will be BYTE for  
>BYTE the same as that from AR2!  
  
I noticed this when I prepared my compression list a few months ago:  The  
results for ARJ 1.x and Lha 2.x are virtually byte-for-byte identical for ever
file in the BWC corpus.  I thought this was just a *tad* suspicious at the tim
but I never mentioned anything since I didn't really want to start a war about
it.  
  
Another thing is that the code posted a while back as LZJU90 appears to be  
slightly reformatted Lharc code.  I really think this should have been credite
as LHA or LHY (Y as in "Yoshi", the Lharc author), and not LZJU.  
  
I'm not sure what method ARJ 2.00 uses (one of these top-secret patented ones)
but whatever it is it's not Lharc code any more - it achieves better  
performance than Lha at greater speed.  
  
Disclaimer:  I'm not trying to start a war, these are just my observations.  
  
--  
 Peter_Gutmann@kcbbs.gen.nz || peter@nacjack.gen.nz || pgut1@cs.aukuni.ac.nz  
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