[XeTeX] italics / SeriaPro

[willem.smelik at ucl.ac.uk]

> It looks to me like the preamble here shows some confusion and
> redundancy....

You are quite right, I haven't yet become familiar with xelatex yet 
nearly well
enough.

> So to sum up, you should remove all the primitive  \font\xx=
> commands shown here, and remove this duplicate command, and then I
> think you'll have better success.

It certainly helped. In the end, I also needed to remove this line:

\setmainfont[Mapping=tex-text]{SeriaPro-Regular}

Although with Gentium or other fonts it worked even with this line, with
SeriaPro it does not. Only this line remains:

\setromanfont[ItalicFont={SeriaPro-Italic}]{SeriaPro}

Well, that, on the face of it, seems so straightforward that I should 've
thought of it before. Many thanks Jonathan, this really is a great help 
for me.

Willem