Am 04.05.2020 um 00:36 schrieb Gerben Wierda
: \starttypescript [sans] [optima] \setups[font:fallback:sans] \definefontsynonym [Sans] [file:Optima.ttc(Optima Regular)] [features=default] \definefontsynonym [SansBold] [file:Optima.ttc(Optima Bold)] [features=default] \definefontsynonym [SansItalic] [file:Optima.ttc(Optima Italic)] [features=default] \definefontsynonym [SansBoldItalic] [file:Optima.ttc(Optima Bold Italic)] [features=default] \stoptypescript
\definetypeface [optima] [ss] [sans] [optima] [default] \definetypeface [optima] [rm] [serif] [optima] [default] \definetypeface [optima] [tt] [mono] [modern] [default] \definetypeface [optima] [mm] [math] [pagella] [default]
\definefallbackfamily [optima] [ss] [file:Helvetica.ttc] [preset=range:cyrillic, force=yes]
\setupbodyfont [optima]
The error is:
fonts > typescripts > unknown library 'optima'
This is about \definetypeface [optima] [rm] [serif] [optima] [default], because you only defined [sans][optima].
open source > level 3, order 6, name '/usr/local/context-osx-64/tex/texmf-context/tex/context/fonts/mkiv/type-imp-texgyre.mkiv' close source > level 3, order 6, name '/usr/local/context-osx-64/tex/texmf-context/tex/context/fonts/mkiv/type-imp-texgyre.mkiv' selectfont > the requested fallback font 'file:Helvetica.ttc' for typeface 'optima' style 'ss' was ignored because no files where found.
The fallback font for cyrillic, Helvetica.ttc, is not found. No problem with Optima reported. Best, Hraban