text: /*-
   * Copyright (c) 1991 The Regents of the University of California.
   * All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * Kenneth Almquist.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
   *
   *	@(#)shell.h	5.4 (Berkeley) 4/12/91
   */
  
  /*
   * The follow should be set to reflect the type of system you have:
   *	JOBS -> 1 if you have Berkeley job control, 0 otherwise.
   *	SYMLINKS -> 1 if your system includes symbolic links, 0 otherwise.
   *	DIRENT -> 1 if your system has the SVR3 directory(3X) routines.
   *	UDIR -> 1 if you want the shell to simulate the /u directory.
   *	TILDE -> 1 if you want the shell to expand ~logname.
   *	USEGETPW -> 1 if getpwnam() must be used to look up a name.
   *	ATTY -> 1 to include code for atty(1).
   *	SHORTNAMES -> 1 if your linker cannot handle long names.
   *	READLINE -> 1 if line editing by readline() should be enabled.
   *	define BSD if you are running 4.2 BSD or later.
   *	define SYSV if you are running under System V.
   *	define DEBUG=1 to compile in debugging (set global "debug" to turn on)
   *	define DEBUG=2 to compile in and turn on debugging.
   *
   * When debugging is on, debugging info will be written to $HOME/trace and
   * a quit signal will generate a core dump.
   */
  
  
  #define JOBS	  0
  #define SYMLINKS  defined(S_ISLNK)
  #define DIRENT	  1
  #define UDIR	  0
  #define TILDE	  1
  #define USEGETPW  0
  #define ATTY	  0
  #define READLINE  1
  #define HASHBANG  0
  /* #define BSD */
  #define POSIX	  1
  #define DEBUG	  0
  
  #ifdef __STDC__
  typedef void *pointer;
  #ifndef NULL
  #define NULL (void *)0
  #endif
  #else /* not __STDC__ */
  typedef char *pointer;
  #ifndef NULL
  #define NULL 0
  #endif
  #endif /*  not __STDC__ */
  #define STATIC	/* empty */
  #define MKINIT	/* empty */
  
  #include <sys/cdefs.h>
  
  extern char nullstr[1];		/* null string */
  
  
  #if DEBUG
  #define TRACE(param)	trace param
  #else
  #define TRACE(param)
  #endif
  