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. -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex