Date: Wed, 01 Nov 2017 22:35:59 +0100 From: Florent Rougon <f.rougon@...e.fr> To: oss-security@...ts.openwall.com Subject: Re: Re: Fw: Security risk of vim swap files Michael Orlitzky <michael@...itzky.com> wrote: > This is what I used to do in emacs before I disabled the backups > completely. I was wondering if there were any problems with it. If there > aren't, it seems like a better default to me, for both emacs and vim. On Emacs, this has been possible for a loooong time, and in a way that prevents collisions due to the same basename: (setq backup-directory-alist '(("." . "/some/path"))) This saves backup files in /some/path with names such as '!home!me!some-subdir!some-basename~'. It's also possible to programmatically disable the backup feature for specific files: ;; For `some', ;; cf. <http://stackoverflow.com/questions/5902847/how-do-i-apply-or-to-a-list-in-elisp>. (require 'cl) (defun my-backup-enable-predicate (fullpath) (and (not (some #'(lambda (file) (string-equal fullpath (expand-file-name file))) '("~/.zsh_history" "~/.local/share/mc/history"))) (normal-backup-enable-predicate fullpath))) (setq backup-enable-predicate 'my-backup-enable-predicate) Finally, an easier but non-programmatic solution when you can afford to write comments directly to the file: use “file variables”, e.g., with this at the beginning of the file you want to never be backed up: -*- make-backup-files: nil -*- Regards -- Florent
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