Patch for deleting tiles when commands are deleted from the undo stack

[Cyrille Berger]

On Saturday 20 March 2010, LukasT.dev at gmail.com wrote:
> On Saturday 20 March 2010 17:09:28 Cyrille Berger wrote:
> > On Saturday 20 March 2010, Boudewijn Rempt wrote:
> > > On Friday 19 March 2010, Boudewijn Rempt wrote:
> > > > Sure!
> > > 
> > > It seems to work now -- I haven't got new regressions indeed.
> > 
> > I actually noticed some problem with undoing with disappearing tiles.
> 
> I don't have your patch, but I have this bug also.
> Sometimes reproducible like:
> 
> * start with white template any size,
> * paint one stroke left, one stroke right, one stroke right, one stroke up,
> one stroke down with some paintops (prefer mine, so that I could include
> your art in my thesis if it is nice)
> * undo til you want to return to white canvas, bah, canvas is transparent.
> * btw you could do random strokes
> 
> So not your mistake most probably
Unfortunately, what you are describing seems to be very different, and I have 
never experienced it before :( And what I experience (and m4v too) is new 
after applying the patch.

-- 
Cyrille Berger