On Thu, 30 Nov 2023 20:51:42 +0100 Wolfgang Schuster wrote:

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%% comment/remove this line and it works \definefontfamily [mainface] [mm] [TeX Gyre Pagella Math]

Use the \definetypeface command to load the math font.

That example was taken straight from https://wiki.contextgarden.net/Command/definefontfamily So that should better read like this: ? \definefontfamily [mainface] [rm] [TeX Gyre Pagella] \definefontfamily [mainface] [ss] [TeX Gyre Heros] \definetypeface [mainface] [mm] [math] [pagella] \setupbodyfont[mainface] Should I correct the wiki then?

Math fonts always use special settings or load additional settings which are missing when you use \definefontfamily.

\definetypeface [mainface] [mm] [math] [pagella]

That works, thanks. However, I discovered that: %% fails \definefontfamily [mainface] [mm] [TeX Gyre Pagella Math] %% works \definefontfamily [mainface] [mm] [pagella] So even with \definefontfamily it works, when “TeX Gyre Pagella Math” is changed to “pagella”. That I do not understand. Marco

Marco Patzer schrieb am 30.11.2023 um 22:23:

On Thu, 30 Nov 2023 20:51:42 +0100 Wolfgang Schuster wrote:

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Use the \definetypeface command to load the math font. Math fonts always use special settings or load additional settings which are missing when you use \definefontfamily.

\definetypeface [mainface] [mm] [math] [pagella] \definetypeface generates the same error message if the font size is changed:

\definefontfamily [mainface] [rm] [TeX Gyre Pagella] \definefontfamily [mainface] [ss] [TeX Gyre Heros]

\definetypeface [mainface] [mm] [math] [pagella]

%% 8pt works \setupbodyfont [mainface, 8.5pt]

\starttext \bold{\math{x_y}} \stoptext

You get the same error with Latin Modern as soon as you use a non predefined font size in combination with bold math. %%%% begin example % \starttypescript [math] [default] [size] %   \definebodyfont [8.5pt] [mm] [default] % \stoptypescript \setupbodyfont[8.5pt] \starttext \im{x_y} \mb\im{x_y} \stoptext %%%% end example Wolfgang