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Unless otherwise noted in the header of specific files, files in this
distribution have the licence shown below.

However, note that certain shell functions are licensed under versions
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of the GNU General Public Licence.  Anyone distributing the shell as a
binary including those files needs to take account of this.  Search
shell functions for "Copyright" for specific copyright information.
None of the core functions are affected by this, so those files may
simply be omitted.
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The Z Shell is copyright (c) 1992-2009 Paul Falstad, Richard Coleman,
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Zoltán Hidvégi, Andrew Main, Peter Stephenson, Sven Wischnowsky, and
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others.  All rights reserved.  Individual authors, whether or not
specifically named, retain copyright in all changes; in what follows, they
are referred to as `the Zsh Development Group'.  This is for convenience
only and this body has no legal status.  The Z shell is distributed under
the following licence; any provisions made in individual files take
precedence.

Permission is hereby granted, without written agreement and without
licence or royalty fees, to use, copy, modify, and distribute this
software and to distribute modified versions of this software for any
purpose, provided that the above copyright notice and the following
two paragraphs appear in all copies of this software.

In no event shall the Zsh Development Group be liable to any party for
direct, indirect, special, incidental, or consequential damages arising out
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of the use of this software and its documentation, even if the Zsh
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Development Group have been advised of the possibility of such damage.

The Zsh Development Group specifically disclaim any warranties, including,
but not limited to, the implied warranties of merchantability and fitness
for a particular purpose.  The software provided hereunder is on an "as is"
basis, and the Zsh Development Group have no obligation to provide
maintenance, support, updates, enhancements, or modifications.