Change C-d binding from delete-char to backward-delete-char-untabify

Change C-d binding from delete-char to backward-delete-char-untabify

[B. T. Raven]

I notice that I use both of these functions in my .emacs:

global-set-key
define-key global-map

Is it enough to make the new binding with either of these or does the
default binding have to be unbound first? What is the difference between
using those two methods? Can I then use the same method to bind
[backspace] to delete-char?

Thanks,

Ed

Re: Change C-d binding from delete-char to backward-delete-char-untabify

[Andrea Crotti]

"B. T. Raven" <nihil@nihilo.net> writes:

> I notice that I use both of these functions in my .emacs:
>
> global-set-key
> define-key global-map
>
> Is it enough to make the new binding with either of these or does the
> default binding have to be unbound first? What is the difference between
> using those two methods? Can I then use the same method to bind
> [backspace] to delete-char?

I always use global-set-key, I'm not sure what could be the difference
between the two methods anyway.

Bu yes you don't need to unbound anything before, and just use
global-set-key after everything else is loaded and you'll be fine.

-- 
GNU Emacs 24.0.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.22.0)
 of 2011-03-04 on plaetekopp

Re: Change C-d binding from delete-char to backward-delete-char-untabify

[Deniz Dogan]

2011/4/7 B. T. Raven <nihil@nihilo.net>:
> I notice that I use both of these functions in my .emacs:
>
> global-set-key
> define-key global-map
>
> Is it enough to make the new binding with either of these or does the
> default binding have to be unbound first? What is the difference between
> using those two methods? Can I then use the same method to bind
> [backspace] to delete-char?
>
> Thanks,
>
> Ed
>

The definition of global-set-key is basically:

(define-key (current-global-map) key command)

`current-global-map' is a function which simply returns the current
global keymap. The global keymap is set using
`use-global-keymap'. When you use (define-key global-map ...) you're
making a binding in the default global keymap, not necessarily the one
currently being used.

At least that's how I understand it...

-- 
Deniz Dogan

Re: Change C-d binding from delete-char to backward-delete-char-untabify

[B. T. Raven]

Deniz Dogan wrote:
> 2011/4/7 B. T. Raven <nihil@nihilo.net>:
>> I notice that I use both of these functions in my .emacs:
>>
>> global-set-key
>> define-key global-map
>>
>> Is it enough to make the new binding with either of these or does the
>> default binding have to be unbound first? What is the difference between
>> using those two methods? Can I then use the same method to bind
>> [backspace] to delete-char?
>>
>> Thanks,
>>
>> Ed
>>
> 
> The definition of global-set-key is basically:
> 
> (define-key (current-global-map) key command)
> 
> `current-global-map' is a function which simply returns the current
> global keymap. The global keymap is set using
> `use-global-keymap'. When you use (define-key global-map ...) you're
> making a binding in the default global keymap, not necessarily the one
> currently being used.
> 
> At least that's how I understand it...
> 


Thanks, Andrea and Deniz. My usage of these functions has been
unsophisticated enough that it doesn't seem to have made any practical
difference. Here the current global map and the default global map
appear to be synonymous. I haven't noticed any problems with mixing
these functions promiscuously in org, text, lisp, tex, etc. modes.

Ed

Re: Change C-d binding from delete-char to backward-delete-char-untabify

[Stefan Monnier]

> Thanks, Andrea and Deniz. My usage of these functions has been
> unsophisticated enough that it doesn't seem to have made any practical
> difference. Here the current global map and the default global map
> appear to be synonymous. I haven't noticed any problems with mixing
> these functions promiscuously in org, text, lisp, tex, etc. modes.

`global-map' is pretty much always the current global map, except in
some unusual circumstances (e.g. it could be different within special
modes such as isearch, tho IIRC isearch does not affect the
current-global-map and uses another mechanism instead).
One of the main packages that uses use-global-map to change the
current-global-map is Viper.


        Stefan