bug#23483: 24.5; cygwin emacs w32 doesn not ask to save files when windows shuts down

[Strozzi, David J.]

Hmmm, this doesn't sound like a great fix.  It's really a "failsafe", but not 
what Windows users expect.  When you open the file again, how will you know 
that there's another auto-save file?  Will emacs tell you?  What if you open 
the file in another program?  Or you're editing source code / script and then 
make / run it, nothing will tell you about the auto-saved file.

Perhaps better is to have emacs simply abort a restart / shutdown and require 
the user to manually close emacs.  If it doesn't behave like other windows 
programs (query user to save unsaved files), then we have to remember emacs is 
special.  You could have a parameter for whether emacs aborts a windows 
shutdown, default to yes, and then users and consciously shut it off if they 
want.

Dave

-----Original Message-----
From: Eli Zaretskii [mailto:eliz@gnu.org] 
Sent: Friday, May 13, 2016 10:47 AM
To: Strozzi, David J.
Cc: kbrown@cornell.edu; 23483@debbugs.gnu.org
Subject: Re: bug#23483: 24.5; cygwin emacs w32 doesn not ask to save files when 
windows shuts down

> From: "Strozzi, David J." <strozzi2@llnl.gov>
> CC: "23483-done@debbugs.gnu.org" <23483-done@debbugs.gnu.org>
> Date: Fri, 13 May 2016 16:22:43 +0000
> 
> Thanks for addressing this!  The usual behavior of windows programs on 
> restart or shutdown is to ask the user to save unsaved files, rather than 
> saving them silently.  The current patch to save automatically is better than 
> losing data, but prompting the user I think would be the best thing.  Or even 
> having emacs abort the shutdown and give a message like "emacs cancelled 
> shutdown due to unsaved files."

The patch doesn't save files automatically, it performs "auto-save", which 
saves the modified buffers into separate files, from which you can restore 
afterwards.

FWIW, I don't see why asking the user would be better.