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eliminated "make realclean"; it's dangerous and useless.
eliminated relocation stuff in the kernal; was buggy and useless.
SIGPIPE now returns control to Forth.
Implemented form, rows, and cols; SIGWINCH updates these (on good OS's).
changed popen and pclose to open-pipe and close-pipe.

    1: /* Input driver header
    2: 
    3:   Copyright (C) 1995 Free Software Foundation, Inc.
    4: 
    5:   This file is part of Gforth.
    6: 
    7:   Gforth is free software; you can redistribute it and/or
    8:   modify it under the terms of the GNU General Public License
    9:   as published by the Free Software Foundation; either version 2
   10:   of the License, or (at your option) any later version.
   11: 
   12:   This program is distributed in the hope that it will be useful,
   13:   but WITHOUT ANY WARRANTY; without even the implied warranty of
   14:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15:   GNU General Public License for more details.
   16: 
   17:   You should have received a copy of the GNU General Public License
   18:   along with this program; if not, write to the Free Software
   19:   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   20: */
   21: 
   22: #include <setjmp.h>
   23: 
   24: extern jmp_buf throw_jmp_buf;
   25: 
   26: #ifdef MSDOS
   27: #  define prep_terminal()
   28: #  define deprep_terminal()
   29: #  define install_signal_handlers()
   30: 
   31: #  include <conio.h>
   32: 
   33: #  define key()		getch()
   34: #  define key_query       FLAG(kbhit())
   35: #else
   36: unsigned char getkey(FILE *);
   37: long key_avail(FILE *);
   38: void prep_terminal();
   39: void deprep_terminal();
   40: void install_signal_handlers(void);
   41: void get_winsize(void);
   42: 
   43: extern int terminal_prepped;
   44: extern UCell rows, cols;
   45: 
   46: #  define key()		getkey(stdin)
   47: #  define key_query	-(!!key_avail(stdin)) /* !! FLAG(...)? - anton */
   48:          		/* flag was originally wrong -- lennart */
   49: #endif