Review request: undo stack not cleaned on saving

[C. Boemann]

On Monday 05 November 2012 16:46:26 Dag wrote:
> Mandag den 5. november 2012 16:35:51 skrev C. Boemann:
> > On Monday 05 November 2012 16:26:06 Dag wrote:
> > > Reviewboard refuses my patch...
> > > 
> > > The result is that [modified] indication is not in sync with file
> > > content, so user may accidently loose data.
> > 
> > how do you see the problem?
> 
> Make 3 changes
> Undo one
> Save -> modified reset
> Undo -> modified set
> Redo  -> still modified (should not be modified)
> Undo all changes -> modified reset (Should still be modified
> 
> But: It *might* be that my last review request caused this, although I
> cannot find any place the stack was cleaned.
> 
> Let look a bit closer on this tomorrow, have to run now.
Okay I do see some issues when i try to do as you say - not completely the 
same, but definitely not right either

But after applying your patch it seems to be working correctly for me, so I 
say: Ship it, and please back port it too.