[XeTeX] Matching font scaling

[Will Robertson]

Pepe Romero <romeromedieval at ...> writes:

>   ItalicFont=[Scale=MatchLowercase]{Blado MT Std Italic}
>   ]{Poliphilus MT Std},

The syntax is 

  ItalicFont=Blado MT Std Italic,
  ItalicFeatures={ Scale=MatchLowercase }

The general problem with the syntax that you suggested 
is that optional argument square brackets can't nest in LaTeX.

Hope this helps,
Will