Hi, Pablo—thanks for the suggestions. I was not able to get them to work. 
Here is my test file.

\definefallbackfamily[mainface][sans][NewGardiner][range=131FC,132F9]
%\definefallbackfamily[mainface][sans][NewGardiner-Medium][range=131FC,132F9]

\definefontfamily[mainface][serif][Brill]

\setupbodyfont[mainface,18pt]


\starttext

Hello world! 1234

αβγ

{
𓇼𓋹
}

and that is all.

\stoptext


On Sun, Apr 2, 2017 at 12:45 PM, Pablo Rodriguez <oinos@gmx.es> wrote:
On 04/02/2017 05:23 PM, Alan Bowen wrote:
> I have the hieroglyphic font, New Gardiner Medium, in .otf and .ttf
> formats. It is installed in my OSFONTDIR and is accessible using other
> applications.
>
> But
>
> \switchtobodyfont[newgardiner,14pt]𓇼𓋹
>
> does not work (with either the .ttf or the .otf format).
>
> I have checked: “NewGardiner” is the Postscript Name, the Full name, and
> the Family Name.
>
> So what have I missed?

Well, I suppose you included before:

\definefontfamily[newgardiner][rm][NewGardiner]

If it doesn’t work, replace [NewGardiner] with [NewGardiner-Medium].

If it doesn’t, could you use \setupbodyfont[newgardiner, 14pt]?

Just in case it helps,

Pablo
--
http://www.ousia.tk
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