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

[Andreas Politz <politza@fh-trier.de>]

Xah Lee wrote:
> On Jan 24, 4:43 pm, Harry Putnam <rea...@newsguy.com> 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