bug#21140: 25.0.50; Isearch "char-fold" by default

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: bruce.connor.am@gmail.com,  sva-news@mygooglest.com,  
> 21140@debbugs.gnu.org
> Date: Thu, 30 Jul 2015 01:51:41 +0300
> 
> > "Character folding" or simply "folding" is accepted terminology.  But
> > "char-fold" is not, it's a confusing shorthand.  That's why I
> > suggested "fold", which is accepted terminology and is short.
> 
> Alas, in Emacs the term “folding” is already taken and means
> zooming in on outlines: (info "(emacs) Foldout")

I see no problem here, since the context is very different.