How to make Ctrl-d not log off the shell?

How to make Ctrl-d not log off the shell?

[mowgli]

How do you make pressing Ctrl-d not log off the shell and instead ask
a question like Do you really want to quit? typing y quits the shell.

Ctrl-d is something I love in emacs and it works on the shell too but
sometimes is inconvinient due to this log off thing when erasing some
characters and you accidentally keep the Ctrl-d pressed a bit more.

Regards,
mowgli

Re: How to make Ctrl-d not log off the shell?

[Tyler Smith]

On 2007-05-16, mowgli <knowledgeless@gmail.com> wrote:
> How do you make pressing Ctrl-d not log off the shell and instead ask
> a question like Do you really want to quit? typing y quits the shell.
>

add this to your .emacs file:

(add-hook 'comint-mode-hook 
	  '(lambda ()
            (define-key comint-mode-map "\C-d" 'delete-char)))


> Ctrl-d is something I love in emacs and it works on the shell too but
> sometimes is inconvinient due to this log off thing when erasing some
> characters and you accidentally keep the Ctrl-d pressed a bit more.

I've done that too - sometimes it's very inconvenient!

Tyler

Re: How to make Ctrl-d not log off the shell?

[Dieter Wilhelm]

Tyler Smith <tyler.smith@mail.mcgill.ca> writes:

> On 2007-05-16, mowgli <knowledgeless@gmail.com> wrote:
>> How do you make pressing Ctrl-d not log off the shell and instead ask
>> a question like Do you really want to quit? typing y quits the shell.
>>

> (add-hook 'comint-mode-hook 
> 	  '(lambda ()
>             (define-key comint-mode-map "\C-d" 'delete-char)))


This might be an alternative at least when using a bash shell or
similar:

I mitigated such a problem for terminals and for the *shell* buffer
with placing the following in my .bashrc:

  export IGNOREEOF=1 # only ^D twice is exiting now

Since it prints a warning  before typing the decisive (in this case
second) C-d.

-- 
    Best wishes

    H. Dieter Wilhelm
    Darmstadt, Germany

Re: How to make Ctrl-d not log off the shell?

[mowgli]

On May 17, 1:48 pm, Dieter Wilhelm <die...@duenenhof-wilhelm.de>
wrote:
> Tyler Smith <tyler.sm...@mail.mcgill.ca> writes:
> > On 2007-05-16, mowgli <knowledgel...@gmail.com> wrote:
> >> How do you make pressing Ctrl-d not log off the shell and instead ask
> >> a question like Do you really want to quit? typing y quits the shell.
>
> > (add-hook 'comint-mode-hook
> >      '(lambda ()
> >             (define-key comint-mode-map "\C-d" 'delete-char)))
>
> This might be an alternative at least when using a bash shell or
> similar:
>
> I mitigated such a problem for terminals and for the *shell* buffer
> with placing the following in my .bashrc:
>
>   export IGNOREEOF=1 # only ^D twice is exiting now
>
> Since it prints a warning  before typing the decisive (in this case
> second) C-d.

This is what I wanted. But instead of twice, it would be nice to have
5 times instead. Because whenever there's an accidental logoff it's
mostly due to many Ctrl-d presses and not just two.

Where can I find documentaion for C-d for bash?

Regards,
mowgli

Re: How to make Ctrl-d not log off the shell?

[Dieter Wilhelm]

mowgli <knowledgeless@gmail.com> writes:

> This is what I wanted. But instead of twice, it would be nice to have
> 5 times instead. Because whenever there's an accidental logoff it's
> mostly due to many Ctrl-d presses and not just two.
>

export IGNOREEOF=5 # only ^D (C-d) five times is exiting now.

> Where can I find documentaion for C-d for bash?

in a terminal type

$ info bash

and then

C-s IGNOREEOF

Normally it should also work under the Emacs info system (with C-h i)
but on my new debian system it's not yet working.

-- 
    Best wishes

    H. Dieter Wilhelm
    Darmstadt, Germany

Re: How to make Ctrl-d not log off the shell?

[Xavier Maillard]

   export IGNOREEOF=5 # only ^D (C-d) five times is exiting now.

This is, by far, the best approache we could have. Actually this
is what I am currently using too for ages. It just works like a
charm without any changes in the code, which is best(TM).

	Xavier
-- 
http://www.gnu.org
http://www.april.org
http://www.lolica.org

Re: How to make Ctrl-d not log off the shell?

[Stefan Monnier]

> (add-hook 'comint-mode-hook 
> 	  '(lambda ()
>             (define-key comint-mode-map "\C-d" 'delete-char)))

Better yet:

 (add-hook 'comint-mode-hook 
 	   (lambda ()
             (define-key comint-mode-map "\C-d" nil)))

I.e. don't say to what C-d should be bound, just leave it be whatever it is
usually bound to.


        Stefan

Re: How to make Ctrl-d not log off the shell?

[martin rudalics]

We could rather do

(defun comint-delchar-or-maybe-eof (arg)
   "Delete ARG characters forward or send an EOF to subprocess.
Sends an EOF only if point is at the end of the buffer and there is no input."
   (interactive "p")
   (let ((proc (get-buffer-process (current-buffer))))
     (if (and (eobp) proc (= (point) (marker-position (process-mark proc))))
	(when (y-or-n-p "Really send EOF? ")
	  (comint-send-eof))
       (delete-char arg))))