Date: Wed, 5 Aug 92 10:44:52 EDT
From: DJ Delorie <dj AT ctron DOT com>
To: lwj AT cs DOT kun DOT nl
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Status of list

> Are those restrictions on pkzip.exe and pkunzip.exe or on the ZIP file
> format itself? If the former, the portable zip/unzip from the info-zip
> group might be usable. Ask Info-ZIP-Request AT WSMR-Simtel20 DOT Army DOT mil for
> details.

unzip includes the following lines in the copyright:

>  Copyright in unzip.c, originally from unzip version 1.2 (?):
>
>     * Copyright 1989 Samuel H. Smith;  All rights reserved
>     *
>     * Do not distribute modified versions without my permission.
>     * Do not remove or alter this notice or any other copyright notice.
>     * If you use this in your own program you must distribute source code.
>     * Do not use any of this in a commercial product.

The fourth one hurts.  Besides, .zip format doesn't support (1)
storing empty directories, (2) supporting binary vs text files, (3)
arbitrary comments and descriptions, (4) renaming files as they're
added, and (5) the ability to prompt for continuation in the middle of
the extraction.  I also intend to support multiple floppy extraction
and unix dd floppies.