@c -*-texinfo-*-
@c This is part of the GNU Emacs Lisp Reference Manual.
@c Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2001, 2002, 2003,
-@c 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+@c 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
@c See the file elisp.texi for copying conditions.
-@setfilename ../info/backups
+@setfilename ../../info/backups
@node Backups and Auto-Saving, Buffers, Files, Top
@chapter Backups and Auto-Saving
@cindex backups and auto-saving
@code{make-backup-files} instead.
@end defvar
-@defvar backup-directory-alist
+@defopt backup-directory-alist
This variable's value is an alist of filename patterns and backup
directory names. Each element looks like
@smallexample
On MS-DOS filesystems without long names this variable is always
ignored.
-@end defvar
+@end defopt
-@defvar make-backup-file-name-function
+@defopt make-backup-file-name-function
This variable's value is a function to use for making backups instead
of the default @code{make-backup-file-name}. A value of @code{nil}
gives the default @code{make-backup-file-name} behavior.
This could be buffer-local to do something special for specific
files. If you define it, you may need to change
@code{backup-file-name-p} and @code{file-name-sans-versions} too.
-@end defvar
+@end defopt
@node Rename or Copy
the buffer stores a positive value in this variable, thus reenabling
auto-saving. Turning auto-save mode off or on also updates this
variable, so that the substantial decrease in size is forgotten.
+
+If it is @minus{}2, that means this buffer should disregard changes in
+buffer size; in particular, it should not shut off auto-saving
+temporarily due to changes in buffer size.
@end defvar
@defvar auto-save-list-file-name
host name.
@end defvar
-@defvar auto-save-list-file-prefix
+@defopt auto-save-list-file-prefix
After Emacs reads your init file, it initializes
@code{auto-save-list-file-name} (if you have not already set it
non-@code{nil}) based on this prefix, adding the host name and process
ID. If you set this to @code{nil} in your init file, then Emacs does
not initialize @code{auto-save-list-file-name}.
-@end defvar
+@end defopt
@node Reverting
@section Reverting