Xref:	news2.mv.net comp.os.msdos.djgpp:6849
From:	John Joseph Newbigin <079519 AT bud DOT cc DOT swin DOT edu DOT au>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: MSDOS Unzip Program
Date:	Mon, 5 Aug 1996 13:41:57 +1000
Organization:	Swinburne University of Technology
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Message-ID:	<Pine.OSF.3.91.960805134117.2380A-100000@bud.cc.swin.edu.au>
References:	<4tgq4k$bt0 AT news DOT uni-paderborn DOT de> <31FAD0AE DOT 503 AT ix DOT netcom DOT com> <4tisnv$139h AT rs18 DOT hrz DOT th-darmstadt DOT de>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On 29 Jul 1996, Alexander Lehmann wrote:

> iNFiK <randolp1 AT ix DOT netcom DOT com> wrote:
> 
> : thoes freeware ZIPers are based on the original pkware PKZIP program.
> : and pkzip is freeware unless you use it in a buisness or somthin =-] .. i 
> : think....
> 
> Actually, PKZIP is based on LHA 2.x, much more than zip is based on
> PKZIP. When LHA 2.x was released (which was basically a quantum leap
> in compression), pkzip got a new compression method which about
> equaled LHA, and since the source code of LHA was available, I would
> guess that the author at least was inspired by it (which is ok, since
> Yoshi released LHA a public domain).
> 
> The unzip program, which was the base for free zip/unzip was
> programmed without any information about the format itself (at least
> that's what I have heared), they basically reinvented the algorithm
> based on the knowledge of LHA. Now, while the file format is certainly
> an invention of PKWARE, the zip program has added long file names,
> upper/lower case and symbolic links (for unix).
> 
> 

Has this __anything__ to do with DJGPP?

Newbs.

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