On Thu, 2024-05-30 at 17:26 +0200, Henning Hraban Ramm wrote:
> My example wasn’t complete, and so is yours. You just define that 
> typeface but never use it.

I'm probably doing it wrong, but I still can't get it to work:

   \definefontfallback[SymbolFB]
     [file:symbola.otf]
     [0x00300-0x003FF,0x02100-0x02800,0x1F000-0x20000] % look up the right Unicode ranges!
     [check=no,force=no]
   
   \definetypeface[circle_typeface][rm][serif][times][default][fallbacks=SymbolFB]
   
   \starttext
   Some text in default font before temporarily switching just for this number:
   {\switchtobodyfont[circle_typeface] \utfchar{0x02460}}
   And back to normal text.
   \stoptext

-- 
Kip Warner
OpenPGP signed/encrypted mail preferred
https://www.thevertigo.com