Key binding with multiple modifiers

Key binding with multiple modifiers

[Chris Laux]

Hello,

What is the correct way to bind a key modified by both the control and
the meta key?  I failed to find an example in the help texts and the
following command doesn't work:

(global-set-key "\C-M-7" 'shell)

When I try the following, the binding is listed when accessed with C-h
b, but actually pressing the keys just gets "C-M-7" printed in the
minibuffer:

(global-set-key [C-M-7] 'shell)

Any help would be greatly appreciated,

Chris

Re: Key binding with multiple modifiers

[Alan Mackenzie]

Chris Laux <Christopher.laux@web.de> wrote on 26 Jan 2004 13:18:43 -0800:
> Hello,

> What is the correct way to bind a key modified by both the control and
> the meta key?  I failed to find an example in the help texts and the
> following command doesn't work:

Have a look at the info page "How do I bind a combination of modifier key
and function key?" under "Key Bindings" in the Emacs FAQ.

Another useful trick is to do the binding interactively with M-x
global-set-key, etc., then use C-x <esc> <esc> (`repeat-complex-command')
to see what it looks like in lisp.

> (global-set-key "\C-M-7" 'shell)

"\C-\M-7" is a correct syntax.

> When I try the following, the binding is listed when accessed with C-h
> b, but actually pressing the keys just gets "C-M-7" printed in the
> minibuffer:

> (global-set-key [C-M-7] 'shell)

At least your operating system seems to generate something sensible for
this key event.

> Any help would be greatly appreciated,

After typing the keys, do C-h l (`view-lossage') to check what Emacs
_really_ saw.

Try C-h c followed by C-M-7.

> Chris

-- 
Alan Mackenzie (Munich, Germany)
Email: aacm@muuc.dee; to decode, wherever there is a repeated letter
(like "aa"), remove half of them (leaving, say, "a").

Re: Key binding with multiple modifiers

[Chris Laux]

Alan Mackenzie<none@example.invalid> wrote in message  

> Another useful trick is to do the binding interactively with M-x
> global-set-key, etc., then use C-x <esc> <esc> (`repeat-complex-command')
> to see what it looks like in lisp.

Thank you all for your help; the advice above actually worked in my
case, other examples didn't strangely.  In case you are curious, I
ended up with the command looking like this:

;(global-set-key (quote [-67108809]) (quote shell))

Chris

Re: Key binding with multiple modifiers

[Kevin Rodgers]

Chris Laux wrote:

> Alan Mackenzie<none@example.invalid> wrote in message  
> 
> 
>>Another useful trick is to do the binding interactively with M-x
>>global-set-key, etc., then use C-x <esc> <esc> (`repeat-complex-command')
>>to see what it looks like in lisp.
>>
> 
> Thank you all for your help; the advice above actually worked in my
> case, other examples didn't strangely.  In case you are curious, I
> ended up with the command looking like this:
> 
> ;(global-set-key (quote [-67108809]) (quote shell))

That is not portable, which is why the "\M-\C-x", [?\M-\C-x], and

(meta control ?x) syntaxes are preferred.

-- 
Kevin Rodgers

Re: Key binding with multiple modifiers

[Stefan Monnier]

> ;(global-set-key (quote [-67108809]) (quote shell))

Where did you get this from ?


        Stefan

Re: Key binding with multiple modifiers

[Kai Grossjohann]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> ;(global-set-key (quote [-67108809]) (quote shell))
>
> Where did you get this from ?

M-x global-set-key ...
C-x ESC ESC ...

Re: Key binding with multiple modifiers

[Jesper Harder]

Christopher.laux@Web.de (Chris Laux) writes:

> When I try the following, the binding is listed when accessed with
> C-h b, but actually pressing the keys just gets "C-M-7" printed in
> the minibuffer:
>
> (global-set-key [C-M-7] 'shell)
>
> Any help would be greatly appreciated,

Try

   (global-set-key (kbd "C-M-7") 'shell)

Re: Key binding with multiple modifiers

[Stefan Monnier]

> What is the correct way to bind a key modified by both the control and
> the meta key?  I failed to find an example in the help texts and the
> following command doesn't work:

I recommend the [(control ?x) (control meta ?7)] syntax.
The kbd syntax is also good.


        Stefan