[NTG-context] Kerning and ligatures in math roman font

Ulrike Fischer news3 at nililand.de
Mon Nov 9 14:59:52 CET 2015

Am Mon, 9 Nov 2015 14:22:45 +0100 schrieb Hans Hagen:

>> Yes, one workaround is to quit math mode. The other to use fonts in
>> mode "base". But I would like to understand why workarounds are
>> needed at all.
> because opentype math fonts are just math fonts (simple for text, rich 
> for math)

But there is no math font involved. This latex example

VA $\mathrm{VA}$

uses exactly one font:


But outside math it is kerned, inside not. 

And this plain tex example doesn't use math fonts either. 

\input luaotfload.sty

\Urm VA $\fam0 VA$ %no kerning in math

\Urm VA $\fam0 VA$ %kerning in math

(I used Arial so that one can see clearly that a text font is used)

Ulrike Fischer 

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