In ConTeXt LMTX this works just fine (try mtxrun --generate and context --make first):

\definefontfeature[Emoji][default][sbix=yes]

\starttext

\definedfont[file:NotoColorEmoji.ttf*Emoji]\char"1F91D

\stoptext

However, when one tries to convert it with ImageMagick the following happens:

   **** Error reading a content stream. The page may be incomplete.
               Output may be incorrect.
   **** Error: Ignoring spurious ET operator.
               Output may be incorrect.
   **** Error: File did not complete the page properly and may be damaged.
               Output may be incorrect.

Only SVG fonts don't trigger this error in LMTX.

I confirm ConTeXt MkIV is having issues with emoji fonts. It seems that GraphicsMagick is not properly generating images as it complains about an improper header.

Jairo

El jue, 13 de may. de 2021 a la(s) 18:26, Adam Reviczky (reviczky@gmail.com) escribió:

Hi,

I am trying to use the 'handshake' character (https://www.fileformat.info/info/unicode/char/1f91d/fontsupport.htm) from the Noto Color Emoji font (https://github.com/googlefonts/noto-emoji/blob/main/fonts/NotoColorEmoji.ttf).

The following MWE gives an error:

\starttext

\definedfont[file:NotoColorEmoji.ttf] \char"1F91D

\stoptext

fonts           > otf loading > loading 'NotoColorEmoji.ttf', hash 'notocoloremoji'
system          > lua > compiling '/home/ubuntu/.texlive2020/texmf-var/luatex-cache/context/b47c3d3cee7cb6c86268d0595268c442/fonts/png/notocoloremoji.tma' into '/home/ubuntu/.texlive2020/texmf-var/luatex-cache/context/b47c3d3cee7cb6c86268d0595268c442/fonts/png/notocoloremoji.tmc'
system          > lua > dumping '/home/ubuntu/.texlive2020/texmf-var/luatex-cache/context/b47c3d3cee7cb6c86268d0595268c442/fonts/png/notocoloremoji.tma' into '/home/ubuntu/.texlive2020/texmf-var/luatex-cache/context/b47c3d3cee7cb6c86268d0595268c442/fonts/png/notocoloremoji.tmc' stripped
fonts           > otf loading > loading done
fonts           > otf loading > saving 'NotoColorEmoji.ttf' in cache
system          > lua > compiling '/home/ubuntu/.texlive2020/texmf-var/luatex-cache/context/b47c3d3cee7cb6c86268d0595268c442/fonts/otl/notocoloremoji.tma' into '/home/ubuntu/.texlive2020/texmf-var/luatex-cache/context/b47c3d3cee7cb6c86268d0595268c442/fonts/otl/notocoloremoji.tmc'
system          > lua > dumping '/home/ubuntu/.texlive2020/texmf-var/luatex-cache/context/b47c3d3cee7cb6c86268d0595268c442/fonts/otl/notocoloremoji.tma' into '/home/ubuntu/.texlive2020/texmf-var/luatex-cache/context/b47c3d3cee7cb6c86268d0595268c442/fonts/otl/notocoloremoji.tmc' stripped
fonts           > otf loading > loading, optimizing, packing and caching time 2.557
pages           > flushing realpage 1, userpage 1, subpage 1

close source    > level 2, order 3, name '/tmp/MWE.tex'
close source    > level 1, order 3, name '/usr/share/texmf/tex/context/base/mkiv/cont-yes.mkiv'
! error:  (file NotoColorEmoji.ttf) (ttf): loca table not foundmtx-context     | fatal error: return code: 256

Any idea what is wrong?

Adam

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________