[XeTeX] Microtypography?

[Jonathan Kew]

On 10 May 2006, at 8:48 pm, Jonathan Kew wrote:

Oops, I see a sentence was left half-finished here! I think I was  
going to write something like...

>>
>> 	I think protrusion might not be too difficult,
>
> Possibly, but it'll be very different from pdfTeX's implementation.
> In the non-Roman world, there's no assurance that the first
> *character* on a line (which is the "addressable unit" in terms of
> TeX's processing of the text) will actually fall at the visual
> edge.... glyph reordering in Indic scripts, for example, break this
> assumption. So when considering line-break positions, it may not be

....adequate to consider the *characters* adjacent to the potential  
break, when evaluating the effect of possible protrusion.