[XeTeX] Redefining \em and \emph

[Will Robertson]

On 2010-09-23 09:07:39 +0930, Gareth Hughes 
<garzohugo at gmail.com> said:

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> As I understand it, the line about redefining emphasis and inner
> emphasis at the end of section 6.3 of the fontspec documentation
> 
>> XETEX users will need to load the xltxtra package before the advice 
>> above works.
> 
> is no longer true seeing as fontspec-patches now does this, and fontspec
> loads it automatically.

You're right, thanks. I've fixed it up in the source.

> I'm looking at ways to redefine emphasis within Syriac text (seeing as
> slanted text is not traditional or pretty). I've got most of the
> redefinitions working, but I'd also like to redefine \emph as an alias
> for \aemph in Syriac text. What's the best way of doing that?

Good question.
I'm not very familiar with multilingual typesetting -- how do you 
switch fonts? Is there a switch that you can query in this case?

Cheers,
Will