find out in which file a key is defined

find out in which file a key is defined

[Jim Green]

Hello:

Could anyone help on this question from an emacs learner:

is there a command to find out why c-r is defined as isearch-backward?
and how to disable this behavior?

Thanks!

Jim.

below is obtained by c-h k c-r

C-r runs the command isearch-backward, which is an interactive
compiled Lisp function.

It is bound to C-r, <menu-bar> <edit> <search> <i-search>
<isearch-backward>.

(isearch-backward &optional REGEXP-P NO-RECURSIVE-EDIT)

Do incremental search backward.
With a prefix argument, do a regular expression search instead.
See the command `isearch-forward' for more information.

Re: find out in which file a key is defined

[Jambunathan K]

Jim Green <student.northwestern@gmail.com> writes:

> Hello:
>
> Could anyone help on this question from an emacs learner:
>
> is there a command to find out why c-r is defined as isearch-backward?
> and how to disable this behavior?

r => reverse

I would recommend that you stick with (and adapt yourself to) the
in-built key bindings. You will save yourself plenty of time in the long
run.

Jambunathnan K.

> Thanks!
>
> Jim.
>
> below is obtained by c-h k c-r
>
> C-r runs the command isearch-backward, which is an interactive
> compiled Lisp function.
>
> It is bound to C-r, <menu-bar> <edit> <search> <i-search>
> <isearch-backward>.
>
> (isearch-backward &optional REGEXP-P NO-RECURSIVE-EDIT)
>
> Do incremental search backward.
> With a prefix argument, do a regular expression search instead.
> See the command `isearch-forward' for more information.
>
>

-- 

Re: find out in which file a key is defined

[Eric Abrahamsen]

On Wed, Dec 07 2011, Jim Green wrote:

> Hello:
>
> Could anyone help on this question from an emacs learner:
>
> is there a command to find out why c-r is defined as isearch-backward?
> and how to disable this behavior?
>
> Thanks!
>
> Jim.
>
> below is obtained by c-h k c-r

When I run that command it tells me that the key is defined in
isearch.el (I'm running emacs 24). That's the facile answer to "why",
the longer answer I guess is that the emacs developers thought you'd
like to search backwards for things, and gave you a command and a
default keybinding to do it. You can always unbind keys with
`global-unset-key', so:

(global-unset-key (kbd "C-r"))

But as was pointed out, this will leave you unable to search backwards
for things.

Eric


>
> C-r runs the command isearch-backward, which is an interactive
> compiled Lisp function.
>
> It is bound to C-r, <menu-bar> <edit> <search> <i-search>
> <isearch-backward>.
>
> (isearch-backward &optional REGEXP-P NO-RECURSIVE-EDIT)
>
> Do incremental search backward.
> With a prefix argument, do a regular expression search instead.
> See the command `isearch-forward' for more information.
>
>

-- 
GNU Emacs 24.0.92.1 (i686-pc-linux-gnu, GTK+ Version 2.24.6)
 of 2011-12-07 on pellet

Re: find out in which file a key is defined

[Jim Green]

On 7 December 2011 09:45, Eric Abrahamsen <eric@ericabrahamsen.net> wrote:
> On Wed, Dec 07 2011, Jim Green wrote:
>
>> Hello:
>>
>> Could anyone help on this question from an emacs learner:
>>
>> is there a command to find out why c-r is defined as isearch-backward?
>> and how to disable this behavior?
>>
>> Thanks!
>>
>> Jim.
>>
>> below is obtained by c-h k c-r
>
> When I run that command it tells me that the key is defined in
> isearch.el (I'm running emacs 24). That's the facile answer to "why",

thank you both, this what I get by c-h k c-r, but where could I find it
is from isearch.el? I think finding where a key defined is very useful.

C-r runs the command isearch-backward, which is an interactive
compiled Lisp function.

It is bound to C-r, <menu-bar> <edit> <search> <i-search>
<isearch-backward>.

(isearch-backward &optional REGEXP-P NO-RECURSIVE-EDIT)

Do incremental search backward.
With a prefix argument, do a regular expression search instead.
See the command `isearch-forward' for more information.


Thanks, Jim

Re: find out in which file a key is defined

[suvayu ali]

On Thu, Dec 8, 2011 at 00:34, Jim Green <student.northwestern@gmail.com> wrote:
>
> thank you both, this what I get by c-h k c-r, but where could I find it
> is from isearch.el? I think finding where a key defined is very useful.

You probably don't have the elisp files installed on your machine.
Installing them will show the info in the same help buffer (the one
you get from C-h k C-r).

On most linux systems these elisp files can be installed by installing
<emacs_pkg_name>-el packages.

HTH

-- 
Suvayu

Open source is the future. It sets us free.

Re: find out in which file a key is defined

[Jim Green]

On 8 December 2011 00:20, suvayu ali <fatkasuvayu+linux@gmail.com> wrote:
> On Thu, Dec 8, 2011 at 00:34, Jim Green <student.northwestern@gmail.com> wrote:
>>
>> thank you both, this what I get by c-h k c-r, but where could I find it
>> is from isearch.el? I think finding where a key defined is very useful.
>
> You probably don't have the elisp files installed on your machine.
> Installing them will show the info in the same help buffer (the one
> you get from C-h k C-r).
>
> On most linux systems these elisp files can be installed by installing
> <emacs_pkg_name>-el packages.

exactly! Thankyou!