[XeTeX] Whitespace in input

[Philip TAYLOR]

Chris Travers wrote:

> But we are talking two different things here.  The first is user
> interface, and the second is mechanism.
>
> What I am saying is special handling of this sort should be required
> to be enabled somehow by the user.  I don't really care how.  It could
> be by a commandline switch to xelatex.  It could be by a call in the
> document if that's possible.  It should be optional, and disabled by
> default, given that the characters involved are not intended to be
> displayed with glyphs.

But /if/ it requires a change to the number of category codes
(and/or the creation of one or more classes of internal node),
then this is not something that should be capable of being
turned on or off within a document.  I don't have any problem
with the idea of turning the functionality on or off either
within a format file or from a command-line qualifier.

** Phil.