[XeTeX] Using OpenType fonts of 2048 em-width glyphs with xelatex, using fontspec

[Simon Cozens]

On 02/11/2015 23:51, Adam Twardoch (List) wrote:
> In your case, the opposite is happening. To me, it seems that the XeTeX
> PDF authoring driver is also emitting one part of the equation correctly
> but not the other. Only Apple's Preview is sensitive to that but I think
> it's still a XeTeX bug since XeTeX comes with its own PDF writer. 

OK, I'm happy to have a dig into this. (because it will probably affect
my software as well... ;-) Hugo, could you send me the font and a test file?