Hi Hans,

Yes, sorry about the error :).

Thanks for the explanation, will use lmtx for that, though probably best
just using another font (some mentioned on the list
https://www.mail-archive.com/ntg-context@ntg.nl/msg92800.html and
https://mailman.ntg.nl/pipermail/ntg-context/2020/098136.html) or svg or
metapost as I do not need it in colour.

I thought it would be easier via fonts but backtracking on the idea now and
maybe using something like this instead:
https://thenounproject.com/term/handshake/153516/.

Thank you,
Adam

On Fri, May 14, 2021 at 4:33 PM Hans Hagen <j.hagen@xs4all.nl> wrote:

> On 5/14/2021 3:21 AM, Jairo A. del Rio wrote:
> >
> >
> > El jue, 13 de may. de 2021 a la(s) 19:52, Adam Reviczky
> > (reviczky@gmail.com <mailto:reviczky@gmail.com>) escribió:
> >
> >     Thanks Jairo,
> >
> >     That indeed works, should've read that it is bitmap only.
> >
> >     I do get a white background though (MKIV), is that how the bitmap is
> >     stored?
> >
> >
> > In LuaLaTeX with Harfbuzz shaper as well as ConTeXt LMTX, transparency
> > is properly handled, so I suppose ConTeXt MkIV is to blame in this case.
> > In case you understand how does ConTeXt handle with bitmap fonts,
> > relevant files are under
> >
> /home/coragyps/lmtx/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/fonts/
> >
> >     \definefontfeature[Emoji][default][sbix=yes]
> >
> >     \starttext
> >
> >
>  \framed[background=color,background=black]{\definedfont[file:NotoColorEmoji.ttf*Emoji]\char"1F91D}
>
> took me quite a while to realize that there is an error in that line
>
> >     \stoptext
> >
> >
> >     In Hans' example for applecoloremoji there is no white background
> >     (page 5, bachotex-2017-emoji.pdf).
> >
> >     I also do not get a white background with LibreOfiice.
> >
> >
> >
> > I'd wait for Hans to fix it, as I don't really understand font
> > management in ConTeXt...
> in lmtx we use a different method
>
> in mkiv we can actually switch to a variant that was on hold till
> texlive release (i.e. luatex 1.13, i forgot about that)
>
> even then, because we cache the problem in mkiv is more with the
> conversion tools that drop masks ..
>
> Hans
>
>
>
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