Juanma Barranquero wrote:
> When you test it, use this version of `bex-enable-predicate':
> 
> (defun bex-enable-predicate (file)
>  "Alternate `backup-enable-predicate' function that excludes from
> backups those files registered with `bex-exclude-files' or
> `bex-exclude-file-from-backup'."
>  (if bex-previous-backup-predicate
>      (let ((regexp (get 'backup-exclude :regexp)))
>        (if (and regexp
>                 (let ((case-fold-search bex-case-fold-search))
>                   (string-match regexp (expand-file-name file))))
>            nil
>          (funcall bex-previous-backup-predicate file)))
>    nil))
> 
> It's a small change to support the case that `backup-enable-predicate'
> is nil (which is uncommon, but possible). Note that in this case, no
> file is ever backed up (because backup-exclude can only exclude files,
> and there's no function ever returning t for any of them).
> 

Thanks, I updated it. :)  It's still been working fine (though I haven't
used it all that often).

Matthew Flaschen