Bug#1006685: kde-plasma-desktop: KDE does not display Emojis correctly

[Norbert Preining]

Hi Max,

> I really tried, but I could not find a guide how to do so. I found
> https://wiki.archlinux.org/title/Font_configuration but it seems not to have a
> section to configure fallback fonts.

I used a different config file, but just found this here which indicates
that it is related to hinting:

https://bugs.freedesktop.org/show_bug.cgi?id=104542

$ cat /etc/fonts/conf.d/68-color-emoji.conf

<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
        <match target="font">
                <test name="family" compare="contains">
                        <string>Emoji</string>
                </test>
                <edit name="hinting" mode="assign">
                        <bool>true</bool>
                </edit>
                <edit name="hintstyle" mode="assign">
                        <const>hintslight</const>
                </edit>
                <edit name="embeddedbitmap" mode="assign">
                        <bool>true</bool>
                </edit>
        </match>
</fontconfig>

$

Does that work (after sudo fc-cache -f  and relogin)?

If not, then

<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
 <alias>
   <family>sans-serif</family>
   <prefer>
     <family>Noto Sans</family>
     <family>Noto Color Emoji</family>
     <family>Noto Emoji</family>
     <family>DejaVu Sans</family>
   </prefer>
 </alias>
 <alias>
   <family>serif</family>
   <prefer>
     <family>Noto Serif</family>
     <family>Noto Color Emoji</family>
     <family>Noto Emoji</family>
     <family>DejaVu Serif</family>
   </prefer>
 </alias>
 <alias>
  <family>monospace</family>
  <prefer>
    <family>Noto Mono</family>
    <family>Noto Color Emoji</family>
    <family>Noto Emoji</family>
    <family>DejaVu Sans Mono</family>
   </prefer>
 </alias>
</fontconfig>

Would help, too.

> So maybe this is not related to KDE directly, but I still think its an
> unfortunate situation, and fixing at would significantly improve the user
> experience? Would it make sense to file another bug report against the
> appropriate package, e.g. fontconfig?

My guess is that the fonts-noto-emoji or so should ship a fontconfig
file that activates it, best with the above.

But I am not running Debian anymore on my main machine, so cannot really
check.

Best

Norbert

--
PREINING Norbert                              https://www.preining.info
Fujitsu Research     +    IFMGA Guide     +    TU Wien    +    TeX Live
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