how to genererate 'C-x @ c' from within a custom keymap

how to genererate 'C-x @ c' from within a custom keymap

[Andrés Ramírez]

Hi. Sometimes I should use a bluetooth keyboard without the Right
control key (cos it is absent on this model).

So. When I need to press the Right Control key for doing C-a or C-e.

I end doing 'C-x @ c'. So far so good.

Pressing C-x is very difficult. So that should be fixed.

Trying to fix it.  Ended with this:
--8<---------------cut here---------------start------------->8---
(global-set-key (kbd "M-h") (lambda () (interactive) (emacsstacko/call-keymap ik-launch-keymap "*Your-key*?:")))
--8<---------------cut here---------------end--------------->8---

JIC. I am not the author of this function.
,---- [  ]
| (defun emacsstacko/call-keymap (map &optional prompt)
|   "Read a key sequence and call the command it's bound to in MAP."
|   ;; Note: MAP must be a symbol so we can trick `describe-bindings' into giving
|   ;; us a nice help text.
|   (let* ((overriding-local-map `(keymap (,map . ,map)))
|                                         ;(help-form `(describe-bindings ,(vector map))) ; conflicts with C-h
|          (key (read-key-sequence prompt))
|          (cmd (lookup-key map key t)))
|     (if (functionp cmd) (call-interactively cmd)
|       (user-error "%s is undefined" key))))
|
`----

And I also have this:
--8<---------------cut here---------------start------------->8---
(defvar ik-launch-keymap (make-sparse-keymap))
;;; below works. But needs xdotool
(define-key ik-launch-keymap "c" (lambda () (interactive) (shell-command-to-string "xdotool key ctrl+x; xdotool type @c")))
(define-key ik-launch-keymap "o" 'other-window)
(define-key ik-launch-keymap "x" (lambda () (interactive) (run-at-time nil nil #'call-interactively 'execute-extended-command)))
--8<---------------cut here---------------end--------------->8---

I want to replace the use of xdotool.
How I should I emulate the pressing of 'C-x @ c'. From within this
custom keymap?.

I have tried a couple of things without success.
(define-key ik-launch-keymap "c" 'event-apply-control-modifier)

And Also I have wrapped 'event-apply-control-modifier within an
interactive function.

Best Regards
ps: btw this one works. But very difficult to press.
(define-key key-translation-map (kbd "M-i") 'event-apply-control-modifier)

Re: how to genererate 'C-x @ c' from within a custom keymap

[Stefan Monnier via Users list for the GNU Emacs text editor]

> I have tried a couple of things without success.
> (define-key ik-launch-keymap "c" 'event-apply-control-modifier)

`event-apply-control-modifier` has to be used within a *remapping*
keymap, i.e. one of `input-decode-map`, `(local-)function-key-map`,
or `key-translation-map`.


        Stefan

Re: how to genererate 'C-x @ c' from within a custom keymap

[Yuri Khan]

On Fri, 22 Jul 2022 at 11:22, Andrés Ramírez <rrandresf@hotmail.com> wrote:
>
> Hi. Sometimes I should use a bluetooth keyboard without the Right
> control key (cos it is absent on this model).
>
> So. When I need to press the Right Control key for doing C-a or C-e.

Why do you need to do that?

* Your keyboard might have Home and End keys that might be easier to
press than anything else you can come up with.
* Or it might have Fn+Left/Fn+Right.
* Or you could use the left Ctrl.
* Or you could rebind move-beginning-of-line and move-end-of-line to other keys.

Re: how to genererate 'C-x @ c' from within a custom keymap

[andrés ramírez]

Hi. Stefan.
My comments below.

>>>>> "Stefan" == Stefan Monnier via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> writes:

    Stefan> `event-apply-control-modifier` has to be used within a *remapping* keymap, i.e. one of
    Stefan> `input-decode-map`, `(local-)function-key-map`, or `key-translation-map`.

That comment lead me to the documentation of 
--8<---------------cut here---------------start------------->8---
(info "(elisp) Translation Keymaps")
--8<---------------cut here---------------end--------------->8---

There. hyperify was found.

After reading it I ended with this:

--8<---------------cut here---------------start------------->8---
(define-key ik-launch-keymap "c" 'launch-keymap/controlrify)
(defun launch-keymap/metarify () (interactive) (execute-kbd-macro (event-apply-control-modifier nil)))
--8<---------------cut here---------------end--------------->8---

It works (half way). C-a C-e are posible. But not C-x.

Perhaps execute-kbd-macro is not the right function.

Best Regards

Re: how to genererate 'C-x @ c' from within a custom keymap

[andrés ramírez]

Hi. Yuri.
>>>>> "Yuri" == Yuri Khan <yuri.v.khan@gmail.com> writes:

    Yuri> Why do you need to do that?

Because. I am trying not to alter to much my tempo. M-h is very easy to
type when You use the dvorak layout.

    Yuri> * Your keyboard might have Home and End keys that might be easier to press than anything
    Yuri> else you can come up with.  * Or it might have Fn+Left/Fn+Right.  * Or you could use the
    Yuri> left Ctrl.  * Or you could rebind move-beginning-of-line and move-end-of-line to other
    Yuri> keys.

Yes. Those are alternatives too.

Thanks