bug#40625: 28.0.50; fido-mode cannot match candidates containing a space

[Eli Zaretskii]

> From: João Távora <joaotavora@gmail.com>
> Date: Wed, 15 Apr 2020 17:02:21 +0100
> Cc: Omar Antolín Camarena <omar@matem.unam.mx>, 
>       40625@debbugs.gnu.org
> 
> So I propose we default it to nil. What do you guys think?
> 
> Also, because flex is a new thing in Emacs 27 anyway,
> I propose we do it in the emacs-27 branch.  Eli?

If the consensus is to set it to nil, then it's okay for Emacs 27.

Thanks.