How to toggle to buffer previously selected ?

How to toggle to buffer previously selected ?

[Francis Moreau]

Hello all,

I know 'C-x o' to select the next selected buffer but I'd like
to toggle between 2 buffers even if more than 2 buffers are
displayed.

Thanks for your hints.
-- 
Francis

Re: How to toggle to buffer previously selected ?

[Bastien Guerry]

"Francis Moreau" <francis.moro@gmail.com> writes:

> I know 'C-x o' to select the next selected buffer but I'd like
> to toggle between 2 buffers even if more than 2 buffers are
> displayed.

`C-x b' (which is bound to `switch-to-buffer')

Maybe you will like iswitchb:

(require 'iswitchb)

where `C-x b' is bound to `iswitchb-buffer', and offers a more
convenient prompt.

-- 
Bastien

Re: How to toggle to buffer previously selected ?

[Tassilo Horn]

"Francis Moreau" <francis.moro@gmail.com> writes:

Hi Francis,

> I know 'C-x o' to select the next selected buffer but I'd like to
> toggle between 2 buffers even if more than 2 buffers are displayed.

I use this:

(defun th-other-buffer ()
  (interactive)
  (switch-to-buffer (other-buffer)))

(global-set-key (kbd "C-?") 'th-other-buffer)

Bye,
Tassilo

Re: How to toggle to buffer previously selected ?

[Francis Moreau]

On Feb 7, 2008 11:53 AM, Tassilo Horn <tassilo@member.fsf.org> wrote:
> "Francis Moreau" <francis.moro@gmail.com> writes:
>
> Hi Francis,
>
> > I know 'C-x o' to select the next selected buffer but I'd like to
> > toggle between 2 buffers even if more than 2 buffers are displayed.
>
> I use this:
>
> (defun th-other-buffer ()
>   (interactive)
>   (switch-to-buffer (other-buffer)))
>
> (global-set-key (kbd "C-?") 'th-other-buffer)
>

This is not what I want to do. Sorry I wasn't clear enough in my previous email.

OK, let's say I have the following setup in my emacs:

+-------+--------+
|           |           |
|   1      |   2      |
|           |           |
+-------+--------+
|           |           |
|   3      |   4      |
|           |           |
+-------+--------+

Currently buffer "2" is selected.

I now select buffer "3". I did some typing in that buffer now I want
to get back quickly to buffer "2". I don't want to do "\C-x\C-o" but
I'd like for example just to do "\C-TAB".

So I can go back and forth between these 2 buffers just by typing "\C-TAB"

Thanks
-- 
Francis

Re: How to toggle to buffer previously selected ?

[Lennart Borgman (gmail)]

Francis Moreau wrote:
> On Feb 7, 2008 11:53 AM, Tassilo Horn <tassilo@member.fsf.org> wrote:
>> "Francis Moreau" <francis.moro@gmail.com> writes:
>>
>> Hi Francis,
>>
>>> I know 'C-x o' to select the next selected buffer but I'd like to
>>> toggle between 2 buffers even if more than 2 buffers are displayed.
>> I use this:
>>
>> (defun th-other-buffer ()
>>   (interactive)
>>   (switch-to-buffer (other-buffer)))
>>
>> (global-set-key (kbd "C-?") 'th-other-buffer)
>>
> 
> This is not what I want to do. Sorry I wasn't clear enough in my previous email.
> 
> OK, let's say I have the following setup in my emacs:
> 
> +-------+--------+
> |           |           |
> |   1      |   2      |
> |           |           |
> +-------+--------+
> |           |           |
> |   3      |   4      |
> |           |           |
> +-------+--------+
> 
> Currently buffer "2" is selected.
> 
> I now select buffer "3". I did some typing in that buffer now I want
> to get back quickly to buffer "2". I don't want to do "\C-x\C-o" but
> I'd like for example just to do "\C-TAB".
> 
> So I can go back and forth between these 2 buffers just by typing "\C-TAB"
> 
> Thanks

windmove

Re: How to toggle to buffer previously selected ?

[Thierry Volpiatto]

"Francis Moreau" <francis.moro@gmail.com> writes:

> On Feb 7, 2008 11:53 AM, Tassilo Horn <tassilo@member.fsf.org> wrote:
>> "Francis Moreau" <francis.moro@gmail.com> writes:
>>
>> Hi Francis,
>>
>> > I know 'C-x o' to select the next selected buffer but I'd like to
>> > toggle between 2 buffers even if more than 2 buffers are displayed.
>>
>> I use this:
>>
>> (defun th-other-buffer ()
>>   (interactive)
>>   (switch-to-buffer (other-buffer)))
>>
>> (global-set-key (kbd "C-?") 'th-other-buffer)
>>
>
> This is not what I want to do. Sorry I wasn't clear enough in my previous email.
>
> OK, let's say I have the following setup in my emacs:
>
> +-------+--------+
> |           |           |
> |   1      |   2      |
> |           |           |
> +-------+--------+
> |           |           |
> |   3      |   4      |
> |           |           |
> +-------+--------+
>
> Currently buffer "2" is selected.
>
> I now select buffer "3". I did some typing in that buffer now I want
> to get back quickly to buffer "2". I don't want to do "\C-x\C-o" but
> I'd like for example just to do "\C-TAB".
>
> So I can go back and forth between these 2 buffers just by typing "\C-TAB"
>
> Thanks

;; C-x o inversé de n windows(optional)
(defun other-window-backward (&optional n)
  "retourne sur n window(s) precedent(s)"
  (interactive "p")
  (other-window (- (or n 1))))
(global-set-key (kbd "<C-tab>") 'other-window-backward)

To go back 1 window C-tab 
2 windows C-u 2 C-tab ...etc...
-- 
A + Thierry
Pub key: http://pgp.mit.edu

Re: How to toggle to buffer previously selected ?

[Tassilo Horn]

"Francis Moreau" <francis.moro@gmail.com> writes:

Hi Francis,

> OK, let's say I have the following setup in my emacs:
>
> +-------+--------+
> |       |        |
> |   1   |   2    |
> |       |        |
> +-------+--------+
> |       |        |
> |   3   |   4    |
> |       |        |
> +-------+--------+
>
> Currently buffer "2" is selected.
>
> I now select buffer "3". I did some typing in that buffer now I want
> to get back quickly to buffer "2". I don't want to do "\C-x\C-o" but
> I'd like for example just to do "\C-TAB".

Ah, ok, you mean windows, not buffers.  For that task I like
window-number.el.

  http://www.emacswiki.org/cgi-bin/wiki/window-number.el

It displays the each window's number in its mode-line and you can jump
to window X using M-X (for X in 1..0).

Bye,
Tassilo

Re: How to toggle to buffer previously selected ?

[Francis Moreau]

On Feb 7, 2008 7:57 PM, Tassilo Horn <tassilo@member.fsf.org> wrote:
> "Francis Moreau" <francis.moro@gmail.com> writes:
>
> Hi Francis,
>
> > OK, let's say I have the following setup in my emacs:
> >
> > +-------+--------+
> > |       |        |
> > |   1   |   2    |
> > |       |        |
> > +-------+--------+
> > |       |        |
> > |   3   |   4    |
> > |       |        |
> > +-------+--------+
> >
> > Currently buffer "2" is selected.
> >
> > I now select buffer "3". I did some typing in that buffer now I want
> > to get back quickly to buffer "2". I don't want to do "\C-x\C-o" but
> > I'd like for example just to do "\C-TAB".
>
> Ah, ok, you mean windows, not buffers.  For that task I like
> window-number.el.

yes windows, not buffers, sorry

>
>   http://www.emacswiki.org/cgi-bin/wiki/window-number.el
>
> It displays the each window's number in its mode-line and you can jump
> to window X using M-X (for X in 1..0).
>

Hmm it doesn't do exactly what I described: you need to specify a window
number.

It's weird that we can't do this almost trivial windows back and forth
selection.

-- 
Francis

Re: How to toggle to buffer previously selected ?

[Joel J. Adamson]

"Francis Moreau" <francis.moro@gmail.com> writes:

> On Feb 7, 2008 7:57 PM, Tassilo Horn <tassilo@member.fsf.org> wrote:
>> "Francis Moreau" <francis.moro@gmail.com> writes:
>>
> Hmm it doesn't do exactly what I described: you need to specify a window
> number.

Most often I just enter "M-%%<(- number-of-windows 1> C-x o", however
this is pretty much the same as window-number (which I'm very happy to
find out about).

Another thing I do pretty often is just re-split the windows.  For
example


--------------------
|         |        |
|         |        |
|         |        |
|    1    |   2    |
|         |        |
|         |        |
|         |        |
--------------------

C-x 1 in window 2
--------------------
|                  |
|                  |
|                  |
|    2             |
|                  |
|                  |
|                  |
--------------------

C-x 3 C-x o C-x b #<buffer 1>

--------------------
|         |        |
|         |        |
|         |        |
|    2    |   1    |
|         |        |
|         |        |
|         |        |
--------------------


Window configurations are not sacred and manipulating them is easy.  I
could make this into "exchange-windows" but it's easy enough as it is
(the above takes about 1 second on a slow day).

> It's weird that we can't do this almost trivial windows back and forth
> selection.

Usually I've found that these trivial things are difficult or have not
been implemented because it's better to do something else.  However,
Emacs is all about freedom, so do it!

Joel
--
Joel J. Adamson
Biostatistician
Pediatric Psychopharmacology Research Unit
Massachusetts General Hospital
Boston, MA  02114
(617) 643-1432
(303) 880-3109

Re: How to toggle to buffer previously selected ?

[Martin Marcher]

On 2/8/08, Joel J. Adamson <jadamson@partners.org> wrote:
> Window configurations are not sacred and manipulating them is easy.  I
> could make this into "exchange-windows" but it's easy enough as it is
> (the above takes about 1 second on a slow day).

nice I just added the following:

;; Window moving
(global-set-key (kbd "C-<up>") 'windmove-up)
(global-set-key (kbd "C-<down>") 'windmove-down)
(global-set-key (kbd "C-<left>") 'windmove-left)
(global-set-key (kbd "C-<right>") 'windmove-right)

;; Yes I switched from vim :)
(global-set-key (kbd "C-c k") 'windmove-up)
(global-set-key (kbd "C-c j") 'windmove-down)
(global-set-key (kbd "C-c h") 'windmove-left)
(global-set-key (kbd "C-c l") 'windmove-right)


-- 
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Re: How to toggle to buffer previously selected ?

[Sam Peterson]

"Francis Moreau" <francis.moro@gmail.com> on Thu, 7 Feb 2008 11:45:49
+0100 didst step forth and proclaim thus:

> Hello all,
>
> I know 'C-x o' to select the next selected buffer but I'd like
> to toggle between 2 buffers even if more than 2 buffers are
> displayed.
>
> Thanks for your hints.
> -- 
> Francis

I think this *almost* does what you want.  I think you may have
trouble getting it to always swap between the last window you want,
but experimenting with the code will likely prove fruitful.

(defun go-back-window ()
  (interactive)
  (if (boundp 'last-window)
      (progn
	(let ((mywindow last-window))
	  (setq last-window (selected-window))
	  (select-window mywindow)))
    (setq last-window (selected-window))
    (select-window (next-window))))
(global-set-key "\C-cb" 'go-back-window)

-- 
Sam Peterson
peabodyenator@gmail.com
"if programmers were paid to remove code instead of adding it,
software would be much better" -- unknown