1 files changed, 50 insertions, 0 deletions

diff --git a/backupfile.h b/backupfile.h
new file mode 100644
index 000000000000..dad19843f597
--- /dev/null
+++ b/backupfile.h
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+/* 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));