keybinding

keybinding

[Z]

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Hello,

I am a  beginner to emacs . I would like to ask some advices to achieve such
a keybinding problem.

Typing C-c C-e in a buffer in Caml mode sends the current phrase
  (containing the point) to the Caml toplevel, and evaluates it.  I would
like that achieve this by simply type C- downarrow. Would you like to give
some hints to achieve it?

Many thanks
Z.

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Re: keybinding

[Uday S Reddy]

On 7/30/2010 4:36 AM, Z wrote:
> Hello,
>
> I am a  beginner to emacs . I would like to ask some advices to achieve such a
> keybinding problem.
>
> Typing C-c C-e in a buffer in Caml mode sends the current phrase
>    (containing the point) to the Caml toplevel, and evaluates it.  I would like
> that achieve this by simply type C- downarrow. Would you like to give some
> hints to achieve it?

The general thing to do is to find the variable that contains the "hooks" that 
are called when caml-mode is entered.  Supposing the variable is called 
caml-mode-hook, you can add to it a function that sets C-[down] to the same 
thing that C-c C-e is set to.  It will look something like

(add-hook 'caml-mode-hook
           (lambda ()
              (local-set-key "C-[down]" the-function-that-sends-current-phrase))))

If there are any users of Caml mode on this list, they can give you more a 
specific tip.

But you would be better off reading the Emacs manual chapter on Customizing Key 
Bindings.

Cheers,
Uday

PS: The Emacs aficionados reading this list might think about why it needs to 
be this complicated!

Re: keybinding

[Burton Samograd]

Uday S Reddy <u.s.reddy@cs.bham.ac.uk> writes:

> On 7/30/2010 4:36 AM, Z wrote:
> you can add to it a function that sets C-[down] to the same thing that
> C-c C-e is set to

To find out the name of the function, you can use C-h k C-c C-e.

> (add-hook 'caml-mode-hook
>           (lambda ()
>              (local-set-key "C-[down]" the-function-that-sends-current-phrase))))

Should be:

(add-hook 'caml-mode-hook
          (lambda ()
             (local-set-key (kbd "C-<down>") 'the-function-that-sends-current-phrase)))

> PS: The Emacs aficionados reading this list might think about why it
> needs to be this complicated!

Sometimes that's just how it is with this much extensability.

--
Burton Samograd

Re: keybinding

[Deniz Dogan]

2010/7/30 Uday S Reddy <u.s.reddy@cs.bham.ac.uk>:
> PS: The Emacs aficionados reading this list might think about why it needs
> to be this complicated!
>

With great power comes great responsibility.

Or more specifically: if you want to be able to customize very
specific needs like this you should expect that you have to understand
just a bit of Emacs Lisp.

-- 
Deniz Dogan