[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

address@hidden: Problem at backup-buffer for writable files in not writa

From: Richard Stallman
Subject: address@hidden: Problem at backup-buffer for writable files in not writable dirs]
Date: Sat, 19 Mar 2005 19:22:14 -0500

I think this change is correct--does anyone disagree?
Would someone please install this on Monday (and thank him)
if no objection has been found?

------- Start of forwarded message -------
Date: Fri, 18 Mar 2005 16:17:00 +0100
From: JUAN-LEON Lahoz Garcia <address@hidden>
To: address@hidden
Subject: Problem at backup-buffer for writable files in not writable dirs
Sender: address@hidden
X-Spam-Status: No, hits=0.0 required=5.0
X-Spam-Checker-Version: SpamAssassin 2.55 (


When you edit and save a writable file in a non writable dir, and you
have `backup-by-copying' to nil (the default), backup-buffer fails to
make a backup in the place user has defined with variable
`backup-directory-alist' (because you cannot move files that are in a
not writable dir, despite of file ownership), so it copies it to file

[ I know having writable files in non writable files is not very
 usual, but I have to edit some conf files in such directories and I
 got this ~/%backup%~ file around all the time ]

IMHO this one-liner patch solves the problem, by detecting this
situation as one of the cases where a copy should be used to backup
the file instead of moving. You may want to review and/or apply it.


- --- files.el.ori        Thu Mar 10 09:29:31 2005
+++ files.el    Thu Mar 10 10:02:00 2005
@@ -2686,6 +2686,7 @@
                             ;; Don't rename a suid or sgid file.
                             (and modes (< 0 (logand modes #o6000)))
+                             (not (file-writable-p (file-name-directory 
                             (and backup-by-copying-when-linked
                                  (> (file-nlinks real-file-name) 1))
                             (and (or backup-by-copying-when-mismatch

Emacs-pretest-bug mailing list
------- End of forwarded message -------

reply via email to

[Prev in Thread] Current Thread [Next in Thread]