[XeTeX] Font protrusion --- new or old ?

[Stephen Moye]

On Feb 8, 2009, at 5:19 PM, Jonathan Kew wrote:

> On 8 Feb 2009, at 20:28, Stephen Moye wrote:
>>
>> Your warning about recursion is ominous... When would that
>> rear its ugly head?
>
> It would happen if the interchar toks didn't include
> \XeTeXinterchartokenstate=0, because there'd be a new boundary between
> what just got inserted and the character that was already there. So
> that's why that's there (within a group, so it doesn't get permanently
> switched off, of course).

Ah. I wondered about that. Thanks very much.

Stephen