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Re: make undo operate as in (no flames please) vim


From: Andreas Politz
Subject: Re: make undo operate as in (no flames please) vim
Date: Sun, 25 Jan 2009 09:28:21 +0100
User-agent: Mozilla-Thunderbird 2.0.0.17 (X11/20081018)

Xah Lee wrote:
On Jan 24, 4:43 pm, Harry Putnam <address@hidden> wrote:
I've used emacs for a goodly number of yrs now.  I'd say though that
my usage is considerably less sophisticated than many users here.

One thing I've actually come to dread is using undo.  I've never taken
the time to get this setup in some way that seems more useful to me.
I always just go for the `C-x u' repeatedly or else preface with some
number (C-u 20 C-x u) to get close if lots of undos are needed.

I often hit `C-x-u' (forgetting to release the C-x part) which brings
me to `upcase-region', which I keep disabled; that means I'm whisked
to a lengthy message about using `upcase-region' and generally
completely disrupting what I was doing.

This is of my own making and not a fault of emacs, but still I'd like
to have the undo behavior I find in vim.  It seems way closer to what
I usually want.  Where I press some keycombo and a whole sentence or
whatever is undone.  Instead of `C-x u' repeatedly to undo the same
line or even paragraph of type.

I don't want to go to viper-mode. That seems a bit drastic, but can
anyone tell me how to setup `undo' to behave more like the undo found
in vim?

Here's what i do:

(global-unset-key (kbd "C-/")) ; undo
(global-unset-key (kbd "C-_")) ; undo

;; undo and redo
(global-set-key (kbd "M-Z") 'redo)
(global-set-key (kbd "M-z") 'undo)

you'll need to install the redo mode. You can find it on
emacswiki.org .

i use a full ergonomic based shortcut you might be interested.
http://code.google.com/p/ergoemacs/

not sure exactly what vi undo behaves... perhaps you want emacs to
lengeth each steps it consider for undo... don't have answer for that
off hand. But if viper mode does it, you can easily customize emacs to
do that without viper too.

  Xah
∑ http://xahlee.org/

Remember, vi was that mode beast. It is easier to undo the correct choice
of characters, if you tell the editor where it starts and ends (via mode
switch).

-ap


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