Re: when nothing happens, buffer still marked as modified

[Joost Kremers]

On Wed, Dec 05 2018, Eli Zaretskii wrote:
> > From: Emanuel Berg <moasenwood@zoho.eu>
> > Date: Wed, 05 Dec 2018 11:09:24 +0100
> >
> > Eli Zaretskii wrote:
> >
> > >> But how do I determine if the buffer has
> > >> changed or not? If it has, of course it
> > >> should be marked `**'!
> > >
> > > That's the same problem that M-q has, and it
> > > leaves the modified status intact. Why not do
> > > as it does?
> >
> > I'm not following, "Why not do as it does"?
>
> I mean why not follow M-q's example?  It marks the buffer 
> modified
> even if re-filling the text arrived at the same text as before 
> the
> command.

Now I'm confused. The NEWS section for Emacs 26 says:

** 'fill-paragraph' no longer marks the buffer as changed unless 
  it
actually changed something.

Which seems to be implemented (correct me if I'm wrong, I only 
took a very quick look) by using `buffer-hash'. I thought that was 
what you meant when you said "do as it does"...


--
Joost Kremers
Life has its moments