While examining the unzip source code I found this clause in the file match.c:
> Permission is granted to any individual or institution to use, copy, > or redistribute this software so long as all of the original files are > included unmodified, that it is not sold for profit, and that this copy- > right notice is retained. This could be read as not permitting modification, since it only talks about using, copying and redistributing. Also, a free program must be available for commercial use, commercial development, and commercial distribution. I'm raising this because it appears that several GNU+Linux distros have copies of unzip. Is it an oversight? It doesn't seem to hive with the Info-ZIP license at http://www.info-zip.org/license.html. I'm having difficulty contacting the Info-ZIP people: Their forums require approval from an administrator to get an account, their mailing lists seem to be gone, their web-based contact form responds with "Go Away Spammer." :/
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