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unsetenv.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2008 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
#pragma prototyped

#define unsetenv  ______unsetenv

#include <ast.h>

#undef      unsetenv

#if _lib_unsetenv

NoN(unsetenv)

#else

#undef      _def_map_ast
#include <ast_map.h>

#if defined(__EXPORT__)
#define extern    __EXPORT__
#endif

extern void
unsetenv(const char *name)
{
      if (!strchr(name, '='))
            setenviron(name);
}

#endif

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