/* backupfile.h -- declarations for making Emacs style backup file names   Copyright (C) 1990, 1991, 1992, 1997 Free Software Foundation, Inc.    This program is free software; you can redistribute it and/or modify   it under the terms of the GNU General Public License as published by   the Free Software Foundation; either version 2, or (at your option)   any later version.    This program is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   GNU General Public License for more details.    You should have received a copy of the GNU General Public License   along with this program; see the file COPYING.   If not, write to the Free Software Foundation,   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */ /* When to make backup files. */enum backup_type{  /* Never make backups. */  none,   /* Make simple backups of every file. */  simple,   /* Make numbered backups of files that already have numbered backups,     and simple backups of the others. */  numbered_existing,   /* Make numbered backups of every file. */  numbered}; extern enum backup_type backup_type;extern char const *simple_backup_suffix; #ifndef __BACKUPFILE_P# if defined __STDC__ || __GNUC__#  define __BACKUPFILE_P(args) args# else#  define __BACKUPFILE_P(args) ()# endif#endif char *base_name __BACKUPFILE_P ((char const *));char *find_backup_file_name __BACKUPFILE_P ((char const *));enum backup_type get_version __BACKUPFILE_P ((char const *));void addext __BACKUPFILE_P ((char *, char const *, int));