Clearning a keymap completely

Clearning a keymap completely

[Narendra Joshi]

I need to remove all the self-insert commands in a buffer. I want to
be able to insert text into the buffer through emacs lisp but don't
want the user to be able to insert text. How can this be done?

Best,
Narendra Joshi

Re: Clearning a keymap completely

[Søren Pilgård]

On Sun, Sep 4, 2016 at 11:40 PM, Narendra Joshi <narendraj9@gmail.com> wrote:
> I need to remove all the self-insert commands in a buffer. I want to
> be able to insert text into the buffer through emacs lisp but don't
> want the user to be able to insert text. How can this be done?
>
That is now how you want to solve it.
Instead look into the buffer-read-only and inhibit-read-only variables [0].
You can let bind them to temporarily edit the buffer from your code.
Messing with all the keybindings is not the way to go.

[0] https://www.gnu.org/software/emacs/manual/html_node/elisp/Read-Only-Buffers.html

Re: Clearning a keymap completely

[Yuri Khan]

On Mon, Sep 5, 2016 at 4:40 AM, Narendra Joshi <narendraj9@gmail.com> wrote:

> I need to remove all the self-insert commands in a buffer. I want to
> be able to insert text into the buffer through emacs lisp but don't
> want the user to be able to insert text. How can this be done?

Easiest is to set (read-only-mode 1). (insert "foo") still works but
self-insert-command tells the user “Buffer is read-only”.

Re: Clearning a keymap completely

[John Mastro]

> Narendra Joshi <narendraj9@gmail.com> wrote:
> 
> I need to remove all the self-insert commands in a buffer. I want to
> be able to insert text into the buffer through emacs lisp but don't
> want the user to be able to insert text. How can this be done?

Just make the buffer read only, and then let-bind inhibit-read-only
to t where necessary in your Lisp. 

https://www.gnu.org/software/emacs/manual/html_node/elisp/Read-Only-Buffers.html

Hope that helps

        John

Re: Clearning a keymap completely

[Narendra Joshi]

Thanks! Let binding inhibit-read-only worked.

On Mon, Sep 5, 2016 at 9:33 AM, John Mastro <john.b.mastro@gmail.com> wrote:
>> Narendra Joshi <narendraj9@gmail.com> wrote:
>>
>> I need to remove all the self-insert commands in a buffer. I want to
>> be able to insert text into the buffer through emacs lisp but don't
>> want the user to be able to insert text. How can this be done?
>
> Just make the buffer read only, and then let-bind inhibit-read-only
> to t where necessary in your Lisp.
>
> https://www.gnu.org/software/emacs/manual/html_node/elisp/Read-Only-Buffers.html
>
> Hope that helps
>
>         John

Re: Clearning a keymap completely

[Marcin Borkowski]

On 2016-09-04, at 23:40, Narendra Joshi <narendraj9@gmail.com> wrote:

> I need to remove all the self-insert commands in a buffer. I want to
> be able to insert text into the buffer through emacs lisp but don't
> want the user to be able to insert text. How can this be done?

Also, you may want to make a mode derived from special-mode.

> Best,
> Narendra Joshi

Hth,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University

Re: Clearning a keymap completely

[Stefan Monnier]

> I need to remove all the self-insert commands in a buffer.  I want to
> be able to insert text into the buffer through emacs lisp but don't
> want the user to be able to insert text.  How can this be done?

The traditional way to do that is with suppress-keymap or by deriving
from special-mode.


        Stefan

Re: Clearning a keymap completely

[Ralf Fassel]

* Narendra Joshi <narendraj9@gmail.com>
| I need to remove all the self-insert commands in a buffer. I want to
| be able to insert text into the buffer through emacs lisp but don't
| want the user to be able to insert text. How can this be done?

Set the buffer to read-only?

R'

Re: Clearning a keymap completely

[Joost Kremers]

Narendra Joshi wrote:
> I need to remove all the self-insert commands in a buffer. I want to
> be able to insert text into the buffer through emacs lisp but don't
> want the user to be able to insert text. How can this be done?

Easiest way is to set the buffer to read-only, then whenever you want to
insert text programmatically, do:

```
(let ((inhibit-read-only t))
  (insert-text)
  ...)
```

You can of course use a keymap that binds every normal key to `nil`, but
you'll have to install it in such a way that it actually overrides all
other keymaps in that buffer. You'd have to read up on keymaps in the
Elisp manual to learn how to do that.



-- 
Joost Kremers                                   joostkremers@fastmail.fm
Selbst in die Unterwelt dringt durch Spalten Licht
EN:SiS(9)