[lltx] luaotfload update

[Ulrike Fischer]

Am Mon, 17 Oct 2011 10:19:48 +0200 schrieb Khaled Hosny:

 
>>> Now the main issue holding the new release is the removed tlig and trep
>>> feature, I'm still not sure what to do here.
 
>> Sorry, I've been away and unable to look into this.
 
>> Could we provide a feature-file including the standard TeX ligatures
>> and use that?

I sent a small file some days ago which worked fine. It only needs
some polishing on the script/language side where I don't know the
best combinition. 

I personally think a feature file is a good idea. Using lua-code /
virtual fonts or something like this is imho problematic as the
context interfaces are not stable enough.    

> I think we can have a feature file for that, it would even include all
> scripts recognised by fontspec so it can work regardless of the chosen
> script.

>> Is it possible to use more than a single .fea file to construct the
>> additional OpenType information? Even if not, it's not the end of the
>> world, as XeTeX "mapping" files can only be applied single-y and that
>> hasn't been a big impediment.

> `featurefile` (should) accept a coma-separated list of files, but this
> does not work now. I think I found a fix, though.

I have seen some posting where feature files have been used to
change the kerning. Actually I think they will be used more with
luatex as there are text files and so much easier to use. 

So I think it is important that you can use more than one feature
file (or that they can be assembled on-the-fly by fontspec). 
 
-- 
Ulrike Fischer