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Re: v6: still no multiple undo?

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  • Subject: [mg77431] Re: v6: still no multiple undo?
  • From: David Reiss <dbreiss at>
  • Date: Fri, 8 Jun 2007 05:37:55 -0400 (EDT)
  • References: <><f48dk7$b36$>

The minimal approach to Undos is part of the reason why I created the
notebook backup and tracking functionality that I include in A
WorkLife FrameWork (shameless plug!).   It is sort of a mini CVS in

I do think though that Undo is tricky in Mathematica.  One reason is
that some of what one does and might want to undo can be **very**
large.  Another is the question of what one means by Undo and redo.
Does this include evaluations?  Does it include formatting changes?
And so on.  I suspect that the question is rather more complex than
what one might have to deal with in a simple text editor or word
processor.  But, on the other hand, I am sure that some cleverness
could be brought to bear on this...

Now Mathematica 6 compatible

On Jun 7, 3:54 am, Selwyn Hollis <sh2.7... at> wrote:
> Ah, that's at the top of my gripes list too. I'm pretty sure that  
> Undo is even less functional in 6 than in 5.2.
> Another shortcoming is the lack of AutoSave or AutoBackup capability.  
> It's too easy to lose track of time, crash, and then discover that  
> you haven't saved anything in 2 hours. (Or maybe its just dementia on  
> my part.) I've created a little palette of my own with an AutoSave  
> function that saves the InputNotebook[] every few minutes. That works  
> pretty well, and if anyone would like to test it, let me know. I've  
> made an attempt at an AutoBackup function, but I don't know how to  
> make it sufficiently non-intrusive.
> -- Selwyn
> On Jun 6, 2007, at 6:43 AM, Will Robertson wrote:
> > Hello,
> > I am baffled that technical software is released in 2007 with only a
> > single undo level. Am I missing something here? Is it because I'm
> > using a student license? How hard can an undo stack really be in the
> > notebook interface?
> > I've been irritated a few times in v5.2 from clumsy keypresses losing
> > me work that I would expect to be two "undo"s away. Alas not. Still.
> > Will Robertson

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