Behavior about saving on exit

[Pierre-Yves Chibon]

On Tue, 2012-07-17 at 15:30 -0700, Dirk Hohndel wrote:
> > So I have been working on changes that do:
> > - When a file has been opened by the user, save to this same file if
> the
> > user is 'Ok' while closing.
> > - Add a 'Cancel' option to the pop-up window that offers to save the
> > file while closing (at the moment it offers Yes and No but both keep
> the
> > program closing).
> > - Add a  'Save As' entry in the file menu 
> 
> All this seems to make sense to me. I had fixing the exit flow on my
> todo list for a while. 

Attached are four patches, the first one is cosmetic, the other three
are implementing the changes described above.

Looking forward for your feedback,
Regards,
Pierre
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