Emacs movement keys

Emacs movement keys

[Eduardo Mercovich]

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Dear Orgers.

This is a novice for novices post. Probably all of you here know this, so please
bear with me with patience and understanding.

Since new users are welcomed to this humble and warm community, I'd like
to share a (to me) hidden pearl.

After some time using Org, I just... ehem... (cought)... <miniscule>did
the tutorial</miniscule>.

I found it quite useful, and the main thing are the emacs movement
keys. Of course, they are not the standard keyboard keys like [home],
[end], [Pg down] or [Pg up]. That not only would be too simple (we could
brawl on that, really), but I believe the real reason is that those keys
were not available or standard when Emacs started.

The good news is that the equivalent keybinds are central in the
keyboard, so you don't even have to move your hands a bit off where they
are.

All in all, the effort to change muscle memory in Emacs makes sense only
if you have an obsessive compulsive maximizer disorder, like many of us
here, and use mostly Emacs (same thing again). ;)

Please note, I'm only saying "I found this and believe it useful for
some" and not "everyone should re-learn how to move". It doesn't make
sense to start any personal, opinionated and context dependent war. 

In short, here is the compressed version in a org table.

--8<---------------cut here---------------start------------->8---

|           | move | move | del   | del  |
| object    | prev | next | back  | forw |
|-----------+------+------+-------+------|
| text      | M <  | M >  | -     | -    |
| screen    | M v  | C v  | -     | -    |
| paragraph | M p  | M n  | -     | -    |
| sentence  | M a  | M e  | -     | M-k  |
| line ↑ ↓  | C p  | C n  | -     | -    |
|      < >  | C a  | C e  | -     | C-k  |
| word      | M b  | M f  | M-DEL | M-d  |
| char      | C b  | C f  | DEL   | C-d  |

C-l clear screen and redisplay all the text, 
    moving point to center, top and bottom of the screen

C-/ Undo
--8<---------------cut here---------------end--------------->8---

For those with visual memory, the image attached may provide some clues:
it's the same thing but the M and C keys are colored, so the pattern is
easier to see.

BTW, there is a quite clear and well thought pattern here:
+ sArt and End
+ Previous and Next
+ Forward and Backward
+ Kill
+ Backspace (DEL) and Delete. 

I hope this may prove useful for someone there. :)

Best...


-- 
eduardo mercovich 

 Donde se cruzan tus talentos 
 con las necesidades del mundo, 
 ahí está tu vocación.

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Re: Emacs movement keys

[Jorge]

On 23 August 2016 at 16:38, Eduardo Mercovich <eduardo@mercovich.net> wrote:
> |           | move | move | del   | del  |
> | object    | prev | next | back  | forw |
> |-----------+------+------+-------+------|
> | text      | M <  | M >  | -     | -    |
> | screen    | M v  | C v  | -     | -    |
> | paragraph | M p  | M n  | -     | -    |
> | sentence  | M a  | M e  | -     | M-k  |
> | line ↑ ↓  | C p  | C n  | -     | -    |
> |      < >  | C a  | C e  | -     | C-k  |
> | word      | M b  | M f  | M-DEL | M-d  |
> | char      | C b  | C f  | DEL   | C-d  |

Yes, these bindings are very useful.  And did you know that even
outside Emacs you can move/delete wordwise by pressing ctrl togeter
with the right/left arrows or delete or backspace?  I only learned it
a few months ago.  I learned it in [1], even though this wordwise
movement/deletion also works outside LibreOffice as well.
1: https://help.libreoffice.org/Common/General_Shortcut_Keys_in

However, in my Emacs, backward-paragraph is bound to M-{, not M-p, and
forward-paragraph is bound to M-}, not M-n.  M-n and M-p are undefined
here, except in specific modes (the only one I remember is the
minibuffer). Have you bound these keys yourself?  Here I use Emacs
25.1-rc2.  I confirmed with a vanilla session (invoked by emacs -Q).

-- 
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• Please adopt free formats like PDF, ODF, Org, LaTeX, Opus, WebM and 7z.
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Re: Emacs movement keys

[Alex Recker]

> And did you know that even outside Emacs you can move/delete wordwise by
> pressing ctrl togeter with the right/left arrows or delete or backspace?

I'm always surprised by how often C-a/C-e and M-f/M-b work in programs
that aren't Emacs.  Of course there is probably some historical reason
behind this (as much as I'd like to think Google and Slack had emacs
users in mind).

Re: Emacs movement keys

[Eduardo Mercovich]

Hi Jorge.


>> |           | move | move | del   | del  |
>> | object    | prev | next | back  | forw |
>> |-----------+------+------+-------+------|
>> | text      | M <  | M >  | -     | -    |
>> | screen    | M v  | C v  | -     | -    |
>> | paragraph | M p  | M n  | -     | -    |
>> | sentence  | M a  | M e  | -     | M-k  |
>> | line ↑ ↓  | C p  | C n  | -     | -    |
>> |      < >  | C a  | C e  | -     | C-k  |
>> | word      | M b  | M f  | M-DEL | M-d  |
>> | char      | C b  | C f  | DEL   | C-d  |

> Yes, these bindings are very useful.  And did you know that even
> outside Emacs you can move/delete wordwise by pressing ctrl togeter
> with the right/left arrows or delete or backspace? [...]

Yes, that's how I did it since I have memory and today is the standard.
Crtl and up/down in many editing programs means paragraph previous and next also. 
That's why I was so surprised when I learnt that Emacs is courteous to
them, but it's native keybindings were different. :)

> However, in my Emacs, backward-paragraph is bound to M-{, not M-p, and
> forward-paragraph is bound to M-}, not M-n.  M-n and M-p are undefined
> here, except in specific modes (the only one I remember is the
> minibuffer). Have you bound these keys yourself?

You're absolutely right, it is my fault, I forgot that I bind them!
What you have is the standard, this was just to follow the same pattern
that in the rest of the keybindings (Meta key, Previous and Next).

The standard binding (just replace the row) is

| paragraph | M {  | M }  | -     | -    |

Sorry to all of you, I did it some time ago and just forgot it.

Best...


-- 
eduardo mercovich 

 Donde se cruzan tus talentos 
 con las necesidades del mundo, 
 ahí está tu vocación.

Re: Emacs movement keys

[Eduardo Mercovich]

Hi Alex.

> I'm always surprised by how often C-a/C-e and M-f/M-b work in programs
> that aren't Emacs.  Of course there is probably some historical reason
> behind this (as much as I'd like to think Google and Slack had emacs
> users in mind).

Yes! At least it works in the command line. :)

Best...


-- 
eduardo mercovich 

 Donde se cruzan tus talentos 
 con las necesidades del mundo, 
 ahí está tu vocación.

Re: Emacs movement keys

[John Hendy]

On Tue, Aug 23, 2016 at 4:01 PM, Alex Recker <alex@reckerfamily.com> wrote:
>> And did you know that even outside Emacs you can move/delete wordwise by
>> pressing ctrl togeter with the right/left arrows or delete or backspace?
>
> I'm always surprised by how often C-a/C-e and M-f/M-b work in programs
> that aren't Emacs.  Of course there is probably some historical reason
> behind this (as much as I'd like to think Google and Slack had emacs
> users in mind).

I've always envisioned a collection of "You know you're an Emacs user
when..." for instances where this *doesn't* work out so conveniently.
Like how many times I've C-y'd out of habit expecting to paste and
nothing happens!


John

>
>

Re: Emacs movement keys

[Alex Recker]

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> "You know you're an Emacs user when..."

You try to M-f your way through a URI and accidentally turn it into an
integral.


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Re: Emacs movement keys

[Marcin Borkowski]

On 2016-08-23, at 23:31, Alex Recker <alex@reckerfamily.com> wrote:

>> "You know you're an Emacs user when..."
>
> You try to M-f your way through a URI and accidentally turn it into an
> integral.

Could you explain this one?

Also,

You know you're an Emacs user when...

you try to get to the beginning of line and find yourself selecting
everything and losing the positition in a large file.

Best,

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

Re: Emacs movement keys

[John Kitchin]

> You know you're an Emacs user when...

You select some text in MS Word and Type C-w to cut it... and are very
unhappy when Word closes...

>
> you try to get to the beginning of line and find yourself selecting
> everything and losing the positition in a large file.
>
> Best,


-- 
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu

Re: Emacs movement keys

[Vikas Rawal]

> On 29-Aug-2016, at 6:55 pm, John Kitchin <jkitchin@andrew.cmu.edu> wrote:
> 
>> You know you're an Emacs user when...
> 
> You select some text in MS Word and Type C-w to cut it... and are very
> unhappy when Word closes...

Story of emacs users on OS X...

Vikas

Re: Emacs movement keys

[Eric S Fraga]

On Monday, 29 Aug 2016 at 13:25, John Kitchin wrote:
>> You know you're an Emacs user when...
>
> You select some text in MS Word and Type C-w to cut it... and are very
> unhappy when Word closes...

Funnily enough, I'm usually happy when Word closes...  ;-)

(sorry for the noise but I couldn't resist)

-- 
: Eric S Fraga (0xFFFCF67D), Emacs 25.0.94.1, Org release_8.3.5-1070-g190476