/* backupfile.h -- declarations for making Emacs style backup file names
- Copyright (C) 1990 Free Software Foundation, Inc.
+ Copyright (C) 1990-1992, 1997-1999 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
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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. */
+
+#ifndef BACKUPFILE_H_
+# define BACKUPFILE_H_
/* When to make backup files. */
enum backup_type
numbered
};
-extern enum backup_type backup_type;
-extern char *simple_backup_suffix;
+# define VALID_BACKUP_TYPE(Type) \
+ ((Type) == none \
+ || (Type) == simple \
+ || (Type) == numbered_existing \
+ || (Type) == numbered)
+
+extern char const *simple_backup_suffix;
+
+# ifndef PARAMS
+# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
+# define PARAMS(Args) Args
+# else
+# define PARAMS(Args) ()
+# endif
+# endif
+
+char *find_backup_file_name PARAMS ((char const *, enum backup_type));
+enum backup_type get_version PARAMS ((char const *context, char const *arg));
+enum backup_type xget_version PARAMS ((char const *context, char const *arg));
+void addext PARAMS ((char *, char const *, int));
-#ifdef __STDC__
-char *find_backup_file_name (char *file);
-#else
-char *find_backup_file_name ();
-#endif
+#endif /* ! BACKUPFILE_H_ */