1 /* backupfile.h -- declarations for making Emacs style backup file names
2 Copyright (C) 1990-1992, 1997-1999, 2001-2003 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 # define BACKUPFILE_H_
25 /* When to make backup files. */
28 /* Never make backups. */
31 /* Make simple backups of every file. */
34 /* Make numbered backups of files that already have numbered backups,
35 and simple backups of the others. */
38 /* Make numbered backups of every file. */
42 # define VALID_BACKUP_TYPE(Type) \
45 || (Type) == numbered_existing \
46 || (Type) == numbered)
48 extern DLL_VARIABLE char const *simple_backup_suffix;
50 extern char *find_backup_file_name (char const *file,
51 enum backup_type backup_type);
52 extern enum backup_type get_version (char const *context, char const *arg);
53 extern enum backup_type xget_version (char const *context, char const *arg);
54 extern void addext (char *filename, char const *ext, char e);
61 #endif /* ! BACKUPFILE_H_ */