Re: emacs-28 a866674b2a: Fix inaccuracies in "lax search" documentation

[Juri Linkov]

>> Why the user should not be allowed to see all active equivalences?
>
> We can always add an 'all' argument, but most people would be
> searching for the equivalences for a particular character, I thought
> (I have no evidence for this, but it seems like the obvious use-case).

Wouldn't it be more natural instead of a special argument 'all'
to add a 'char' argument that will describe the equivalences
for a particular character, and when 'nil' then will describe
all characters.