Re: `char-fold-table'

[Artur Malabarba]

> So here we are now, with char folding.  Great.  So can
> we now consider facilitating users defining their own
> classes of characters?  Or making it easy for them to
> modify the default equivalence classes?

My thoughts are still focused on ironing out some issues. But this is
a fine time to start suggesting ways to make it customizable.

> Making `char-fold-table' a defconst seems wrong.  What's
> the right way to enable users and code to customize such
> things?

In the very least we can rename the current table to
character-fold-table-default, and make let the user change
character-fold-table if desired.
We can also offer more alternatives besides the current default, but
it would be better to give users a good way to define classes.

> Yes, I know that the doc for this feature is still to be
> written, and that this the feature is still a work in
> progress.  But let's please progress it - in the direction
> of more and better info for users and helping users modify
> and extend the behavior.

This, along with ironing out the kinks, is my priority for this
feature. However, I'm writting my thesis right now so I won't be able
to do this for another couple of months.
Of course, if anyone would like to contribute documentation that would
be highly appreciated.