# [XeTeX] Problems with thickness of \frac rule and width of accents (\hat) with XeLaTeX

Khaled Hosny khaledhosny at eglug.org
Tue Aug 17 16:32:11 CEST 2010

On Mon, Aug 16, 2010 at 12:15:35AM +0200, Ulrik Vieth wrote:
> Hi,
>
> I tested it with both XeLaTeX and LuaLaTeX (both from TL2010 pretest).
> In short, the problem only occurs in XeLaTeX, but not in LuaLaTeX,
> despite using the same macro packages and fonts for both engines.
>
> I do not really understand the problem with the fraction rule thickness.
> It probably should be the same on both engines (despite conceptual
> differences), as it should be based on the same OpenType parameter
> RadicalRuleThickness, but it seems to be different nonetheless:

Likely XeTeX does not check this parameter at all and resorts to some
hard coded default rule thickness.

Regards,
Khaled

--
Khaled Hosny
Arabic localiser and member of Arabeyes.org team
Free font developer