Using emoji with PDF device

[Andrea D'Amore]

Hello,
while trying to use emoji characters 🏠📱📧🌐 in a ms macro file and
then compiling with

    groff -Tpdf -k -ms -dpaper=a4 -P-pa4 file.ms > file.pdf

I got

    troff: file.ms:66: warning: can't find special character 'u1F3E0'
    troff: file.ms:73: warning: can't find special character 'u1F4F1'
    troff: file.ms:75: warning: can't find special character 'u1F4E7'
    troff: file.ms:77: warning: can't find special character 'u1F310'


Is this due to the font families available to my *roff installation?

If so is there a particular font (that I see I can install with mom's
install-font.sh) suited for my goal?


As side question, what is the proper way to list available families and fonts?

I ended up listing `/usr/share/groff/1.22.4/font/devpdf` then reading
"Fullname" comment in the short named files (à-la-roff), but it wasn't
very handy.


Bye

-- 
Andrea D'Amore