bug#32395: 26.1; generated autoloads includes string properties if buffer is open

[Eli Zaretskii <eliz@gnu.org>]

> From: Allen Li <darkfeline@felesatra.moe>
> Date: Sat, 11 Aug 2018 02:49:30 -0700
> Cc: 32395@debbugs.gnu.org
> 
> > Can you tell more about the use case where you see this?  Does this
> > happen when the autoload files in the Emacs tree are generated?
> 
> I use update-directory-autoloads to generate autoloads for personal
> Emacs Lisp files.  The text changes depending on whether I have a
> buffer open for any of said files, which is annoying as I have the
> autoload file under source version control.  If I edit one file and
> update autoloads, it will create a number of unrelated changes in
> version control, depending on whether I have any other files open in
> buffers or not.
> 
> I don't see why there is a need to preserve the text properties of the
> package prefix in the autoload file, only when the file for which
> autoloads are being generated is open in a buffer.  That seems like
> very silly behavior to me and I would fix it on principle even if it
> were not affecting my work flow.

Thanks, I've pushed your changes to the master branch.  If as result
you no longer think of Emacs as being silly, we all win.