Hi,
When you edit and save a writable file in a non writable dir, and you
use `backup-by-copying' to nil (the default), backup-buffer fails to
make a backup in the place you define with `backup-directory-alist'
(because you cannot move files that are in a not writable dir), so it
copies it to file "~/%backup%~".
[ I know this 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. You may want to review and/or apply it.
Regards
juanleon
--- files.el.ori Thu Mar 10 09:29:31 2005
+++ files.el Thu Mar 10 10:02:00 2005
@@ -2686,6 +2686,7 @@
backup-by-copying
;; Don't rename a suid or sgid file.
(and modes (< 0 (logand modes #o6000)))
+ (not (file-writable-p (file-name-directory
real-file-name)))
(and backup-by-copying-when-linked
(> (file-nlinks real-file-name) 1))
(and (or backup-by-copying-when-mismatch
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