bug#52394: 27.2; Isearch with char folding enabled doesn’t match equivalent strings

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: greselin.andrea@gmail.com,  52394@debbugs.gnu.org
> Date: Sun, 12 Dec 2021 20:06:15 +0200
> 
> >> > Even better, yes. In addition to simplifying changing the default,
> >> > something like that would make it easy to create different levels of
> >> > folding and switch between them (by writing commands that add or
> >> > remove certain characters from the list).
> >> 
> >> Thanks for the suggestion,  This is implemented by the following patch:
> >
> > Doesn't this change the default behavior?
> 
> No, no change in the default behavior.

Then I guess the doc string of the defcustom is confusing?  Can you
make it more clear wrt what each value means in practice?

Thanks.