emacs 24, tramp and history causing sudo tramp to fail

emacs 24, tramp and history causing sudo tramp to fail

[Richard Riley]

here's a little bug which I came across and am wondering if I can
configure it out.

Open a file and then re-Open it as root 

I use

(defun find-alternative-file-with-sudo ()
  "Open current buffer as root!"
  (interactive)
  (when buffer-file-name
    (find-alternate-file
     (concat "/sudo:root@localhost:"
	     buffer-file-name))))


edit, save, quit the file.

open some more files.

now C-x C-f and use M-p to find a previous file name in the open
history. The problem is that the tramp sudo line is one of the history elements and
as soon as it comes into the minibuffer input it triggers a background
password process causing all further sudo opens to fail.

regards
r.

Re: emacs 24, tramp and history causing sudo tramp to fail

[Michael Albinus]

Richard Riley <rileyrg@googlemail.com> writes:

> here's a little bug which I came across and am wondering if I can
> configure it out.
>
> Open a file and then re-Open it as root 
>
> I use
>
> (defun find-alternative-file-with-sudo ()
>   "Open current buffer as root!"
>   (interactive)
>   (when buffer-file-name
>     (find-alternate-file
>      (concat "/sudo:root@localhost:"
> 	     buffer-file-name))))
>
>
> edit, save, quit the file.
>
> open some more files.
>
> now C-x C-f and use M-p to find a previous file name in the open
> history. The problem is that the tramp sudo line is one of the history elements and
> as soon as it comes into the minibuffer input it triggers a background
> password process causing all further sudo opens to fail.

I've tried your scenario, but the "tramp sudo line" does not go into
`file-name-history'. Could you, please, provide a recipe for reproduction?

Maybe via "M-x report-emacs-bug", which shows the recent keys you have typed.

> regards
> r.

Best regards, Michael.