bug#18336: 24.4.50; When editing externally changed file, Emacs asks too many questions

[Eli Zaretskii <eliz@gnu.org>]

> From: Stefan Kangas <stefan@marxist.se>
> Cc: dak@gnu.org,  npostavs@gmail.com,  18336@debbugs.gnu.org
> Date: Mon, 02 Mar 2020 10:04:06 +0100
> 
> >> 0. emacs -Q
> >> 1. C-x C-f /tmp/moo.txt RET
> >> 2. abc C-x C-s
> >> 3. From terminal: echo "foo" >> /tmp/moo.txt
> >> 4. type something, get these messages:
> >> moo.txt changed on disk; really edit the buffer? (y, n, r or C-h) y
> >> 5. Answer 'y', save the file, get:
> >> - do you really want to save? [not logged]
> >> - moo.txt changed on disk; really edit the buffer? (y, n, r or C-h) y
> >
> > First, this is not what David reported, see his description up-thread.
> 
> Isn't it?  He described:
> 
>     [Original change behind Emacs' back, the trying to edit buffer]
>     smobs.cc changed on disk; really edit the buffer? (y, n, r or C-h) y
>     File on disk now will become a backup file if you save these changes.
>     [So far so good.  Now pressing C-x C-s]
>     Saving file /usr/local/tmp/lilypond/lily/smobs.cc...
>     [That message is ok]
>     smobs.cc changed on disk; really edit the buffer? (y, n, r or C-h) y
>     [That question is ludicrous.  I am saving the file, not editing it.]
> 
> I don't think I see what the difference is from what I reported.

This part of your report is missing from David's:

 - do you really want to save? [not logged]

And this part doesn't appear in your report:

   Saving file /usr/local/tmp/lilypond/lily/smobs.cc...

> > And second: are you saying you get the question
> >
> >   do you really want to save? [not logged]
> >
> > right after "C-x C-s", then the question
> >
> >   moo.txt changed on disk; really edit the buffer? (y, n, r or C-h)
> >
> > right after Emacs says "Wrote moo.txt"?  That is, you didn't do
> > anything after saving to get the last prompt?
> 
> Yes.

Strange.  Some debugging is required, I'd say.