Color emoji on Arch Linux.

color-emoji-on-linux.sh

# create folders if does not exist
mkdir -p ~/.fonts
mkdir -p ~/.config/fontconfig/

# download noto color emoji font from https://www.google.com/get/noto/#emoji-zsye-color
# extract NotoColorEmoji.ttf file into ~/.fonts/

# create font config file
cat << 'EOF' > ~/.config/fontconfig/fonts.conf
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
   <match>
      <test name="family">
         <string>sans-serif</string>
      </test>
      <edit name="family" mode="prepend" binding="strong">
         <string>Noto Color Emoji</string>
      </edit>
   </match>
   <match>
      <test name="family">
         <string>serif</string>
      </test>
      <edit name="family" mode="prepend" binding="strong">
         <string>Noto Color Emoji</string>
      </edit>
   </match>
   <match>
      <test name="family">
         <string>Apple Color Emoji</string>
      </test>
      <edit name="family" mode="prepend" binding="strong">
         <string>Noto Color Emoji</string>
      </edit>
   </match>
</fontconfig>
EOF

# build font information cache files
fc-cache -f -v