[NTG-context] italic correction after math

Hans Hagen pragma at wxs.nl
Tue Feb 13 15:44:20 CET 2018


On 2/13/2018 12:12 PM, Ulrike Fischer wrote:
> In the following example the calligraphic P bumps into the following
> x.
> 
> After some searching in the archive I found some discussions from
> 2012 and had the impression that this either shouldn't happen or
> that the behaviour could at least could be changed with
> \setupmathematics[italics=n].
> 
> But in my examples \setupmathematics[italics=...] doesn't do
> anything. Every line looks looks identical to me (the second example
> is from the header of xits-math.lfg). Is this behaviour expected? If
> yes, what should one do to get an italic correction is such cases?
> 
> 
> \setupbodyfont[xits]
> 
> \starttext
> x${\cal P}$x\par
> \setupmathematics[italics=1]x${\cal P}$x\par
> \setupmathematics[italics=2]x${\cal P}$x\par
> \setupmathematics[italics=3]x${\cal P}$x\par
> \setupmathematics[italics=4]x${\cal P}$x\par
> 
> \stoptext
> 
> \setupbodyfont[xits]
> \starttext
> test $a;b;a; b; f;$ test\par
>   \setupmathematics[italics=1] test $a;b;a; b; f;$ test\par
> %fontitalics
>   \setupmathematics[italics=2] test $a;b;a; b; f;$ test\par
> % fontdata
>   \setupmathematics[italics=3] test $a;b;a; b; f;$ test\par
> % quad based
>   \setupmathematics[italics=4] test $a;b;a; b; f;$ test\par
> % combination of 1 and 3
> 
> \stoptext

hm, seems that i messed up a pointer ... i'll fix it ...

> (xetex inserts a kern of 2.45pt after the math in latex).

context inserts 2.938pt

(luatex uses the opentype route so it might be different than xetex and 
pdftex)

Hans

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