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Group: gnu.emacs.help · Group Profile
Author: Evans WinnerEvans Winner Date: Jul 28, 2008 12:20
Florian Lindner writes:
My idea is to copy the file to another folder. When I
edit and save ~/ text/file.txt the backup is saved in
~/.emacs.d/backup/home/florian/ text/file.txt.n with n
being a number incremted form 1 to x each save.
I have a directory called ~/bu and this in my .emacs
(thought I am not sure which versions of Emacs it works
with):
(setq version-control t) ; Numbered backups.
(setq backup-directory-alist ; Backup directory
`(("." .
,(expand-file-name "~/bu"))))
I don't know if this is exactly what you mean.... I
occasionally clean out old stuff from my ~/bu directory.
The files are named like this:
!home!thorne!hacking!litmus!mla.tmac.~3~
with bang-path kinda names and the number at the end a
version number.
Here is some documentation about those variables:
,----[ C-h v version-control RET ]
| version-control is a variable defined in `/home/usr/local/share/emacs/23.0.60/lisp/files.elc'.
| Its value is t
|
| This variable is safe as a file local variable if its value
| satisfies the predicate `(lambda (x) (or (booleanp x) (equal x (quote never))))'.
|
| Documentation:
| Control use of version numbers for backup files.
| When t, make numeric backup versions unconditionally.
| When nil, make them for files that have some already.
| The value `never' means do not make them.
|
| You can customize this variable.
`----
,----[ C-h v backup-directory-alist RET ]
| backup-directory-alist is a variable defined in `/home/usr/local/share/emacs/23.0.60/lisp/files.elc'.
| Its value is
| (("." . "/home/thorne/bu"))
|
|
| Documentation:
| Alist of filename patterns and backup directory names.
| Each element looks like (REGEXP . DIRECTORY). Backups of files with
| names matching REGEXP will be made in DIRECTORY. DIRECTORY may be
| relative or absolute. If it is absolute, so that all matching files
| are backed up into the same directory, the file names in this
| directory will be the full name of the file backed up with all
| directory separators changed to `!' to prevent clashes. This will not
| work correctly if your filesystem truncates the resulting name.
|
| For the common case of all backups going into one directory, the alist
| should contain a single element pairing "." with the appropriate
| directory name.
|
| If this variable is nil, or it fails to match a filename, the backup
| is made in the original file's directory.
|
| On MS-DOS filesystems without long names this variable is always
| ignored.
|
| You can customize this variable.
`----
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