[lltx] $n\choose k$-issue with OpenType math fonts

Taco Hoekwater taco at elvenkind.com
Sat Mar 5 09:23:26 CET 2011

On 03/05/2011 03:04 AM, Philipp Stephani wrote:
> No, the parameters are fine and I think the only difference is the size
> of the delimiters, which is caused by LuaOTFLoad setting the
> FractionDelimiterSize parameters which don't really exist in the fonts
> (they are LuaTeX-only additions); changing line 116 of luaotfload.lua to
>              mc.FractionDelimiterDisplayStyleSize = 1.7 * size
> yields much better results. However, that is a font-specific design
> issue, and I wonder whether LuaTeX should really use those parameters if
> the font doesn't have them.

The problem is that nothing in the existing MATH parameters seems to
apply. But perhaps the results could be better if the FractionDelimiter
parameters were initialized based on some MATH parameter that does

Best wishes,

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