C-i and tab

C-i and tab

[Boris H.]

Hi,

Emacs 21 reads C-i as Tab. How can I change this so I can remap C-i without 
affecting tab? I tried all sorts of global-set-key and -unset-key without 
luck.

Boris

Re: C-i and tab

[Eli Zaretskii]

On Thu, 31 Oct 2002, Boris H. wrote:

> Emacs 21 reads C-i as Tab. How can I change this so I can remap C-i without 
> affecting tab? I tried all sorts of global-set-key and -unset-key without 
> luck.

You could remap [tab] (the function key) to what C-i is mapped now, and 
then remap C-i to something else.  Note that this will not work on 
character terminals where the TAB key produces C-i, so Emacs cannot 
distinguish between them.

C-i and TAB

[Ivan Kanis]

How come Emacs for X can't distinguish between C-i and TAB? I understand
why that happens on a terminal, but on X it should be possible...
-- 
Ivan Kanis
http://ivan.kanis.fr

Si jeunesse savait, si vieillesse pouvait.
    -- Henri Estienne

Re: C-i and TAB

[Andreas Schwab]

Ivan Kanis <banana@kanis.fr> writes:

> How come Emacs for X can't distinguish between C-i and TAB?

Because C-i and TAB are just two names for the same thing.

> I understand why that happens on a terminal, but on X it should be
> possible...

Try <tab> instead.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Re: C-i and TAB

[Stefan Monnier]

> How come Emacs for X can't distinguish between C-i and TAB? I understand
> why that happens on a terminal, but on X it should be possible...

Emacs definitely distinguished between the two.
But it has a function-key-map entry that turns `tab' (the event
generated by your TAB key) into a C-i when there's no binding for `tab'.


        Stefan

Re: C-i and TAB

[Ivan Kanis]

>> How come Emacs for X can't distinguish between C-i and TAB? I understand
>> why that happens on a terminal, but on X it should be possible...
>
> Emacs definitely distinguished between the two.
> But it has a function-key-map entry that turns `tab' (the event
> generated by your TAB key) into a C-i when there's no binding for `tab'.

Not in trunk:

emacs -Q

(global-set-key (kbd "C-i") 'foo)
(global-set-key (kbd "TAB") 'bar)

TAB -> Symbol's function definition is void: bar
C-i -> Symbol's function definition is void: bar

Re: C-i and TAB

[Stefan Monnier]

> (global-set-key (kbd "C-i") 'foo)
> (global-set-key (kbd "TAB") 'bar)

`kbd's syntax defines TAB as equivalent to C-i, so the above two
instructions bind the same key.

Try

(global-set-key [?\C-i] 'foo)
(global-set-key [tab] 'bar)


        Stefan

Re: C-i and TAB

[Ivan Kanis]

>> (global-set-key (kbd "C-i") 'foo)
>> (global-set-key (kbd "TAB") 'bar)
>
> `kbd's syntax defines TAB as equivalent to C-i, so the above two
> instructions bind the same key.
>
> Try
>
> (global-set-key [?\C-i] 'foo)
> (global-set-key [tab] 'bar)

Great! Thank you.

RE: C-i and TAB

[Drew Adams]

> > (global-set-key (kbd "C-i") 'foo)
> > (global-set-key (kbd "TAB") 'bar)
> 
> `kbd's syntax defines TAB as equivalent to C-i, so the above two
> instructions bind the same key.
> 
> Try
> (global-set-key [?\C-i] 'foo)
> (global-set-key [tab] 'bar)


Or just this, no?

(global-set-key (kbd "C-i")   'foo)
(global-set-key (kbd "<tab>") 'bar)

Re: C-i and TAB

[Xue Fuqiao]

On Thu, 7 Feb 2013 11:47:34 -0800
"Drew Adams" <drew.adams@oracle.com> wrote:

> > > (global-set-key (kbd "C-i") 'foo)
> > > (global-set-key (kbd "TAB") 'bar)
> > 
> > `kbd's syntax defines TAB as equivalent to C-i, so the above two
> > instructions bind the same key.
> > 
> > Try
> > (global-set-key [?\C-i] 'foo)
> > (global-set-key [tab] 'bar)
> 
> 
> Or just this, no?
> 
> (global-set-key (kbd "C-i")   'foo)
> (global-set-key (kbd "<tab>") 'bar)

Their effect should be the same.

-- 
Best regards, Xue Fuqiao.
http://www.emacswiki.org/emacs/XueFuqiao

Re: C-i and TAB

[Ivan Kanis]

> On Thu, 7 Feb 2013 11:47:34 -0800
> "Drew Adams" <drew.adams@oracle.com> wrote:
>
>> > > (global-set-key (kbd "C-i") 'foo)
>> > > (global-set-key (kbd "TAB") 'bar)
>> >
>> > `kbd's syntax defines TAB as equivalent to C-i, so the above two
>> > instructions bind the same key.
>> >
>> > Try
>> > (global-set-key [?\C-i] 'foo)
>> > (global-set-key [tab] 'bar)
>>
>>
>> Or just this, no?
>>
>> (global-set-key (kbd "C-i")   'foo)
>> (global-set-key (kbd "<tab>") 'bar)
>
> Their effect should be the same.
>

I like Andrew's best. I have never been a fan of the "native" keybinding
representation.

RE: C-i and TAB

[Drew Adams]

> > > > (global-set-key (kbd "C-i") 'foo)
> > > > (global-set-key (kbd "TAB") 'bar)
> > > 
> > > Try
> > > (global-set-key [?\C-i] 'foo)
> > > (global-set-key [tab] 'bar)
> > 
> > Or just this, no?
> > (global-set-key (kbd "C-i")   'foo)
> > (global-set-key (kbd "<tab>") 'bar)
> 
> Their effect should be the same.

That was the point.
You can use `kbd' as originally attempted.
You just need to know the external representation <tab>. 

Re: C-i and tab

[Boris H.]

Eli Zaretskii wrote:

> You could remap [tab] (the function key) to what C-i is mapped now, and
> then remap C-i to something else.  Note that this will not work on
> character terminals where the TAB key produces C-i, so Emacs cannot
> distinguish between them.

I've just tried it, but it doesn't work:

(global-set-key [(tab)] 'indent-for-tab-command)
(global-set-key [(control i)] 'ispell)

When I press C-h k C-i, Emacs tells me that TAB runs the command 
lisp-indent-line.

Boris

Re: C-i and tab

[Eli Zaretskii]

> From: "Boris H." <nosp@m.de>
> Newsgroups: gnu.emacs.help
> Date: Thu, 31 Oct 2002 16:26:57 +0100
> 
> Eli Zaretskii wrote:
> 
> > You could remap [tab] (the function key) to what C-i is mapped now, and
> > then remap C-i to something else.  Note that this will not work on
> > character terminals where the TAB key produces C-i, so Emacs cannot
> > distinguish between them.
> 
> I've just tried it, but it doesn't work:
> 
> (global-set-key [(tab)] 'indent-for-tab-command)

Try this:

 (define-key function-key-map [tab] 'indent-for-tab-command)

Re: C-i and tab

[Stefan Monnier <foo@acm.com>]

>>>>> "Eli" == Eli Zaretskii <eliz@is.elta.co.il> writes:
>  (define-key function-key-map [tab] 'indent-for-tab-command)

You mean (define-key global-map [tab] 'indent-for-tab-command) ?


        Stefan

Re: C-i and tab

[Boris H.]

Eli Zaretskii wrote:
> Try this:
> 
>  (define-key function-key-map [tab] 'indent-for-tab-command)

It still does not work. Emacs keeps reading C-i as tab. Is there no way to 
change this?
The same is true for C-m and ret.

Re: C-i and tab

[maierh]

"Boris H." <nosp@m.de> writes:

> It still does not work. Emacs keeps reading C-i as tab. Is there no
> way to change this?  The same is true for C-m and ret.

What's wrong and why do you want to change that? C-i is tab and C-m is
RET.  

Harald

C-i and TAB

[Boris H.]

Hi,

my Emacs 21.1.1 reads C-i as TAB. I want to remove this binding to rebind 
C-i. I tried 

(global-unset-key "\C-i")

which had no effect.
How do I make Emacs read C-i as C-i only?

Boris