Many thanks, Wolfgang: it now works as it should. This is a recent change, I take it. Still, good to know.

Alan

On Thu, Nov 6, 2014 at 4:52 PM, Wolfgang Schuster <schuster.wolfgang@gmail.com> wrote:

Am 06.11.2014 um 13:51 schrieb Alan Bowen <bowenalan03@gmail.com>:

Sorry, Wolfgang. I cut too much—

\definefontfamily[mainface][serif][Antykwa-Poltawskiego]
[protrusion=quality,
expansion=quality, 
mode=node,
smallcaps,
force=yes]
\definefallbackfamily[mainface][serif][IFAO Grec Unicode]
[range={02BB-F8FF,10140-1D513},
protrusion=quality,
expansion=quality,
mode=node,
  kern=yes,
force=yes,
check=no,
rscale=0.95]

\setupbodyfont[mainface,10pt]
\definefont[Greek][IFAO-Grec at 10pt]

\starttext
 ἔφεϲιϲ and τελειότηϲ
 
 {\Greek  ἔφεϲιϲ and τελειότηϲ}
\stoptext

still fails. What I get is:
        φει and τελειτη

       ἔφεςις and τελειότης 

Note that the sigmas in the second line are now incorrect too.

You have to put \definefallbackfamily before \definefontfamily.

Wolfgang


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