[NTG-pdftex] character attribute

[The Thanh Han]

Hi,

currently a character node in tex has the only attribute, ie
the associated font. I m wondering whether it makes  sense
to replace this attribute (font) by a pointer to some data
structure representing a set of attributes. This way we can
add further attributes of a character without messing up
around the sources. Such attributes can be: font, color,
location in tex sources, next bytes of a utf8 sequence etc.
How to you guys see it?

Thanh