[XeTeX] Whitespace in input

[Philip TAYLOR]

Zdenek Wagner wrote:

> I admit that things could be done better than in nowadays TeX but its
> complete revamping seems to me as bad investment. I would rather think
> of an FO processor.

And I agree with Zdeněk : this discussion will be productive only
if we focus on what can be accomplished (w.r.t. spaces) with few
or no changes to XeTeX, not on how we might best deal with the
whole (intellectually daunting) issue of optimally typesetting Unicode.

** Phil.