Re: undo grouping

[Carsten Dominik <dominik@science.uva.nl>]

Excellent, thank you very much.

I have installed this code (not using advice, but directly).

- Carsten

On Feb 24, 2009, at 9:22 PM, Martin Pohlack wrote:

> Hi All,
>
> I hacked together a small workaround for the ungrouped undo-list  
> entries
> (undo works only characterwise in org-mode, but usually chunks  
> together
> several key strokes in, e.g., text-mode).
>
> I have this piece of code in my emacs startup script.
>
> -----–----------------------------- 
> >8-----------------------------------
> ;; implement undo grouping for org-mode
> (setq org-self-insert-command-undo-counter 0)
> (defadvice org-self-insert-command (after compact-undo-list ()  
> activate)
>  "Compact the undo list by removing some boundaries."
>  (if (not (eq last-command 'org-self-insert-command))
>      (setq org-self-insert-command-undo-counter 1)
>    (if (>= org-self-insert-command-undo-counter 20)
>        (setq org-self-insert-command-undo-counter 1)
>      (when (> org-self-insert-command-undo-counter 0)
>        (when buffer-undo-list
>          (when (not (cadr buffer-undo-list)) ; remove nil entry
>            (setcdr buffer-undo-list (cddr buffer-undo-list)))))
>      (incf org-self-insert-command-undo-counter))))
> -----–----------------------------- 
> >8-----------------------------------
>
> The advice post-processes the local buffer-undo-list and removes some
> undo-boundaries.  The behavior is modeled after emacs' command_loop.
>
> Feedback welcome.
>
> Cheers,
> Martin
>
>
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