Segoe UI Emoji font has strange color (title editted)

[emojifreak]

Segoe UI Emoji font is an emoji font in MS Windows and it contains both black-and-white version and color version.

When I process

\documentclass{minimal}
\usepackage{harfload}
\font\testbw={name:Segoe UI Emoji:mode=node}
\font\testcolor={name:Segoe UI Emoji:mode=harf}
\begin{document}
\testcolor
😄👌☃⛄
\testbw
😄👌☃⛄
\end{document}

I get which is almost what I expect. The colors look strange.

But when I process

\documentclass{minimal}
\usepackage{harfload}
\font\testbw={name:Segoe UI Emoji:mode=node}
\font\testcolor={name:Segoe UI Emoji:mode=harf}
\begin{document}
\testbw
😄👌☃⛄
\testcolor
😄👌☃⛄
\end{document}

I get

I do not have the color emojis. The latter behavior seems a bug.

[khaledhosny]

Unfortunately loading the same font using both node/base mode and harf mode is not supported. The way luaotfload and harfload load the fonts are incompatible.

It might be possible to get this to work, but not a priority at the moment.

[emojifreak]

@khaledhosny Thanks. I understood the priority of the developement. The color of Segoi UI Emoji seems very strange. Is it an expected behavior?? The color of Segoi UI Emoji is, in my view, always strange even when only mode=harf is used.

[khaledhosny]

We don't currently support transparency, see khaledhosny/harf#19, which might be the reason.

[khaledhosny]

Turns out that transparency is not involved here, I was just using the wrong colors.