1 /* backupfile.h -- declarations for making Emacs style backup file names
2 Copyright (C) 1990-1992, 1997-1999, 2001-2003, 2015 Free Software
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 # define BACKUPFILE_H_
26 /* When to make backup files. */
29 /* Never make backups. */
32 /* Make simple backups of every file. */
35 /* Make numbered backups of files that already have numbered backups,
36 and simple backups of the others. */
39 /* Make numbered backups of every file. */
43 # define VALID_BACKUP_TYPE(Type) \
46 || (Type) == numbered_existing \
47 || (Type) == numbered)
49 extern DLL_VARIABLE char const *simple_backup_suffix;
51 extern char *find_backup_file_name (char const *file,
52 enum backup_type backup_type);
53 extern enum backup_type get_version (char const *context, char const *arg);
54 extern enum backup_type xget_version (char const *context, char const *arg);
55 extern void addext (char *filename, char const *ext, char e);
62 #endif /* ! BACKUPFILE_H_ */