[OS X Emacs] Aquamacs question: disable/rename backup files?

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    David> Auto-save-mode is usually only enabled by the user, so this is alright.

    David> However, the problem with routing all backups to such a location
    David> would be that potentially confidential files being edited on a
    David> temporarily mounted volume would effectively be copied to that
    David> location.

Emacs (at least for auto-save-directory) sets it to mode 700, owned by the
user.

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