# Geary opens links in firefox nevertheless vivaldi is set as default in xfce4.
# After looking in xfce4-mime-settings, no problem can be found.
# So check the association via cli:
>$ xdg-mime query default x-scheme-handler/http
>$ xdg-mime query default x-scheme-handler/https
# If it shows still firefox.desktop set to vivaldi-stable.desktop with
>$ xdg-mime default vivaldi-stable.desktop x-scheme-handler/http
>$ xdg-mime default vivaldi-stable.desktop x-scheme-handler/https