Re: Truncate undo list

Thanks
rundo and wundo did the trick.

Richard

On 06/09/2012 04:56 AM, Christian Brabandt wrote:
> Hi richard!
>
> On Fr, 08 Jun 2012, richard emberson wrote:
>
>> If one has an undo list, is there a way to
>> capture its its given state/length,
>> make additional edits, and then go back to
>> its captured state/length (with or without backing
>> out any new changes) and remove all later members of
>> the undo list (no redos) - truncate the undo list.
>
> The undo tree is not meant to be modified, though there are 2 different
> workarounds:
>
> 1) Take the buffer content and copy it into a new buffer. There you
> modify your buffer as you like, without messing with the undo
> tree in the original buffer. When you are finished, copy the
> data back in the original buffer. The NrrwRgn plugin may be
> helpful for this.
> 2) If the buffer contents at the beginning and end are the same, it
> should be possible to write the undo tree once using :wundo. Now
> modify your buffer as you like. When finished, discard the
> current undo tree, by reading in the old undo tree using :rundo.
> For this to work, the buffer contents at the time of
> :wundo/:rundo must be exactly the same, else :rundo won't work.
> Use :verbose to make sure it works.
>
> regards,
> Christian
>

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