Shift Tab in help buffers still does not move backwards

Shift Tab in help buffers still does not move backwards

[Lennart Borgman]

I believe that S-Tab still does not move backwards. It did at some time, 
but have been changed again.

Re: Shift Tab in help buffers still does not move backwards

[Juri Linkov]

> I believe that S-Tab still does not move backwards. It did at some time, 
> but have been changed again.

Could you be more specific on what version/platform it doesn't work.
On GNU/Linux with the latest CVS, S-TAB works in help buffers
(but not M-TAB, ESC-TAB or C-M-i).

-- 
Juri Linkov
http://www.jurta.org/emacs/

Re: Shift Tab in help buffers still does not move backwards

[Lennart Borgman]

Juri Linkov wrote:

>>I believe that S-Tab still does not move backwards. It did at some time, 
>>but have been changed again.
>>    
>>
>
>Could you be more specific on what version/platform it doesn't work.
>On GNU/Linux with the latest CVS, S-TAB works in help buffers
>(but not M-TAB, ESC-TAB or C-M-i).
>  
>
w32, CVS from 2005-08-06 (aug 6). However it does not seem to be an 
issue with S-Tab in the help buffer I see now. If I start with emacs.exe 
-Q and do

   C-h c S-Tab

I get "TAB (translated from <s-tab>) ...".

Could be my copy since I did some changes to the key handling, but I do 
not think so. Could someone else using w32 please confirm this?

Re: Shift Tab in help buffers still does not move backwards

[Juanma Barranquero]

On 8/8/05, Lennart Borgman <lennart.borgman.073@student.lu.se> wrote:

> I get "TAB (translated from <s-tab>) ...".

I get it too.

Well, "Translated from <S-tab>", really (s-tab would be super-tab).

-- 
                    /L/e/k/t/u

Re: Shift Tab in help buffers still does not move backwards

[Eli Zaretskii]

> Date: Mon, 08 Aug 2005 23:13:57 +0200
> From: Lennart Borgman <lennart.borgman.073@student.lu.se>
> Cc: emacs-devel@gnu.org
> 
>    C-h c S-Tab
> 
> I get "TAB (translated from <s-tab>) ...".

Perhaps we simply should add a binding for S-TAB in w32-win.el.

Re: Shift Tab in help buffers still does not move backwards

[Lennart Borgman]

Eli Zaretskii wrote:

>>Date: Mon, 08 Aug 2005 23:13:57 +0200
>>From: Lennart Borgman <lennart.borgman.073@student.lu.se>
>>Cc: emacs-devel@gnu.org
>>
>>   C-h c S-Tab
>>
>>I get "TAB (translated from <s-tab>) ...".
>>    
>>
>
>Perhaps we simply should add a binding for S-TAB in w32-win.el.
>  
>
How should a binding there look? What should it do?

I do not understand how this works. I have looked in 
`translation-key-map' and in 'function-key-map' but I can not find any 
translation of S-Tab there. Where is the translation done?

Why does S-Tab work in Info buffers but not in Help buffers? Why are 
these kind of bindings (moving between links) treated differently in 
this buffer types?

Re: Shift Tab in help buffers still does not move backwards

[Andreas Schwab]

Lennart Borgman <lennart.borgman.073@student.lu.se> writes:

> I do not understand how this works. I have looked in 
> `translation-key-map' and in 'function-key-map' but I can not find any 
> translation of S-Tab there. Where is the translation done?

See read_key_sequence in keyboard.c:

      /* If KEY is not defined in any of the keymaps,
	 and cannot be part of a function key or translation,
	 and is a shifted function key,
	 use the corresponding unshifted function key instead.  */

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Re: Shift Tab in help buffers still does not move backwards

[Lennart Borgman]

Andreas Schwab wrote:

>Lennart Borgman <lennart.borgman.073@student.lu.se> writes:
>
>  
>
>>I do not understand how this works. I have looked in 
>>`translation-key-map' and in 'function-key-map' but I can not find any 
>>translation of S-Tab there. Where is the translation done?
>>    
>>
>
>See read_key_sequence in keyboard.c:
>
>      /* If KEY is not defined in any of the keymaps,
>	 and cannot be part of a function key or translation,
>	 and is a shifted function key,
>	 use the corresponding unshifted function key instead.  */
>  
>
Thanks. If Tab is handled as a function key here is it then not just a 
simple matter of binding S-Tab for the links in the help buffer?

BTW I can not find the information above in the elisp manual. Is it 
there or just in the source code? I remember it has been confusing 
sometimes that the shifted function keys are bound to the unshifted ones.

Re: Shift Tab in help buffers still does not move backwards

[Eli Zaretskii]

> Date: Tue, 09 Aug 2005 10:35:51 +0200
> From: Lennart Borgman <lennart.borgman.073@student.lu.se>
> CC: juri@jurta.org,  emacs-devel@gnu.org
> 
> >Perhaps we simply should add a binding for S-TAB in w32-win.el.
> >  
> How should a binding there look? What should it do?

See the bindings on x-win.el.  I think the following should DTRT:

(define-key function-key-map [S-tab] [backtab])

> Why does S-Tab work in Info buffers but not in Help buffers?

Maybe because Info-prev-reference is bound to both [backtab] and
M-TAB, while backward-button in Help buffers is bound only to
[backtab]?