RE: On language-dependent defaults for character-folding

[Drew Adams]

> > For the release, I think we should turn it off by default
> > and invite people to try turning it on.
> 
> That would be a grave mistake, IMO, since at least some parts of
> folding are a must, and no one objected to them till now (neither
> would I expect to see any objections).  See my other message for
> details.

Some parts are a must?  Which parts, and a must for what?
A must for the _default_ behavior?