Re: Undo Depth in ZLE

Re: Undo Depth in ZLE

[Radostan Riedel]

In vi-mode the 'u' key is bounded to 
> vi-undo-change

According "man zshzle"


> vi-undo-change (unbound) (u) (unbound)
> Undo the last text modification.  If repeated, redo the modification.

Just try out :

> bindkey -M vicmd 'u' undo

best regards
Ray




Am Montag, den 08.03.2010, 15:55 +0530 schrieb Chidambaram Annamalai:
> Is there a way to undo more than once in ZLE?
> The default behavior in the vi mode in ZLE is to toggle between undo
and
> redo on pressing u.
> I want to be able to undo more than one previous change. Is it
possible?

Re: Undo Depth in ZLE

[Nadav Har'El]

On Mon, Mar 08, 2010, Radostan Riedel wrote about "Re: Undo Depth in ZLE":
> Just try out :
> 
> > bindkey -M vicmd 'u' undo

Indeed, vi mode's "u" behaves like the the original BSD "vi" (and ksh),
where "u" only undoes one change (and repeating it redoes the change).

Personally, I would have liked the default to emulate not the old vi, but
rather vim, with which more people should be be familiar these days, and
its multi-level undo and redo.

To emulate vim's multi-level undo and redo, here is what I use in my .zshrc:

	bindkey -a u undo
	bindkey -a '^R' redo

By the way this overrides zsh's default mapping of ^R which is "redisplay".
What am I losing by doing this? (I didn't see "redisplay" does anything...)

Moreover, I also like to have undo in insert mode, especially to be able to
undo completions, so I also have:

	bindkey -v '^Z' undo
	bindkey -v '^R' redo


Nadav.

-- 
Nadav Har'El                        |      Thursday, Mar 11 2010, 25 Adar 5770
nyh@math.technion.ac.il             |-----------------------------------------
Phone +972-523-790466, ICQ 13349191 |Martin Luther King said "I have a dream",
http://nadav.harel.org.il           |not "I have a plan".

Re: Undo Depth in ZLE

[Frank Terbeck]

Nadav Har'El wrote:
[...]
> Indeed, vi mode's "u" behaves like the the original BSD "vi" (and ksh),
> where "u" only undoes one change (and repeating it redoes the change).
>
> Personally, I would have liked the default to emulate not the old vi, but
> rather vim, with which more people should be be familiar these days, and
> its multi-level undo and redo.

It's called a *vi*-like mode and not a *vim*-like mode for a reason. :-)
Also, zsh has been around for a long time. Longer than vim being
everyone's vi-clone of choice.

Regards, Frank

-- 
In protocol design, perfection has been reached not when there is
nothing left to add, but when there is nothing left to take away.
                                                  -- RFC 1925

Redisplay (Re: Undo Depth in ZLE)

[Bart Schaefer]

On Mar 11, 11:48am, Nadav Har'El wrote:
}
} By the way this overrides zsh's default mapping of ^R which is "redisplay".
} What am I losing by doing this? (I didn't see "redisplay" does anything...)

Redisplay redraws just the current ZLE buffer, as opposed to clear-screen
(^L) which erases the terminal first.

This is useful if something else is scribbling on your display, like a
background job producing output, or console messages (if you're on the
console).

Redisplay also can be used to redraw a multi-line editor buffer that is
more than one screen tall, moving the line the cursor is on as close as
possible to the center of the screen.

Undo Depth in ZLE

[Chidambaram Annamalai]

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Is there a way to undo more than once in ZLE?
The default behavior in the vi mode in ZLE is to toggle between undo and
redo on pressing u.
I want to be able to undo more than one previous change. Is it possible?