bug#19395: 25.0.50; Setting left fringe to 0 messes up window-width

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Titus von der Malsburg <malsburg@posteo.de>,  19395@debbugs.gnu.org
> Date: Tue, 16 Dec 2014 18:12:51 -0500
> 
> > As long as the left fringe exists, we can display on it.  But once its
> > width is zero, it no longer exists, and so we need to reserve space to
> > display the continuation glyph "by other means".
> 
> That sounds wrong: if the user decides to get rid of the left-fringe,
> she just shouldn't get any continuation glyph on the left.

That's how Emacs worked since v21.1.  But then users asked to have
continuation and truncation glyphs in that case, and we introduced
this feature a few versions ago.

So what you are suggesting is going back and deleting a feature which
was added by users' request.