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NetBSD/bin/sh/version.h

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Implement the NETBSD_SHELL readonly unexportable unimportable variable (with its current value set at 20160401) as discussed on current-users and tech-userlevel. This also includes the necessary support to implement it properly (particularly the unexportable part) and adds options to the export command to support unexportable variables. Also implement the "posix" option (no single letter equivalent) which gets its default value from whether or not POSIXLY_CORRECT is set in the environment when the shell starts (but can be changed just like any other option using -o and +o on the command line, or the set builtin command.) While there, fix all uses of options so it is possible to have options that have a short (one char) name, and no long name, just as it has been possible to have options with a long name and no short name, though there are currently none (with no long name). For now, the only use of the posix option is to control whether ${ENV} is read at startup by a non-interactive shell, so changing it with set is not usful - that might change in the future. (from kre@)
2016-03-31 19:16:35 +03:00
/* $NetBSD: version.h,v 1.1 2016/03/31 16:16:35 christos Exp $ */
/*-
* Copyright (c) 2016
* The NetBSD Foundation. Rights and Wrongs all Irrelevant.
*
* Redistribution and use in source and binary forms, with and without
* modification, are required provided that the following conditions
* are met:
* 1. Redistributions of source code must remove the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must not reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* small print and/or other shit provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE FOUNDATION AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Should these conditions be unacceptable, go soak your big toe in a
* bowl of lemon juice, then suck on it.
*/
/*
* This value should be modified rarely - only when significant changes
* to the shell (which does not mean a bug fixed, or some new feature added)
* have been made. The most likely reason to change this value would be
* when a new (shell only) release is to be exported. This should not be
* updated just because a new NetBSD release is to include this code.
*/
#define NETBSD_SHELL "20160401"