[XeTeX] XeTeX (/not/ XeLaTeX) : Marginal kerning, font protrusion, hyperlinks

[Robert]

On 10.04.14 16:53, Philip Taylor wrote:
> Further to this thread, in a document on which I am currently
> working I have to write :
>
>> \XeTeXprotrudechars = 2
>> \rpcode \fd /hyphen = 250
>> \rpcode \fd /period = 150
>
> I would like to write :
>
>> \XeTeXprotrudechars = 2
>> \rpcode \fd `\- = 250
>> \rpcode \fd `\. = 150

Simple (ie. non-prefixed) numbers designate font-specific glyph 
positions, while you want the Unicode char code.

> or at worst :
>
>> \XeTeXprotrudechars = 2
>> \rpcode \fd \TeXtoUnicode `\- = 250
>> \rpcode \fd \TeXtoUnicode `\. = 150
>
> Clearly there /is/ a reason why the first was not /
> cannot be implemented, but (a) what is that reason,
> and (b) does \TeXtoUnicode already exist,

Yes, it exists: "U" (as explained here: 
http://tug.org/pipermail/xetex/2010-May/016531.html). So:

\XeTeXprotrudechars = 2
\rpcode \fd U`\- = 250
\rpcode \fd U`\. = 150

should do what you want.

Best,
-- 
  Robert