Are you in en_US? The sequence you mentioned should definitely work in that locale. Here’s a more authoritative link than the manually-updated wiki page: https:

Are you in en_US? The sequence you mentioned should definitely work in that locale. Here’s a more authoritative link than the manually-updated wiki page: https://gitlab.freedesktop.org/xorg/lib/libx11/-/blob/master/nls/en_US.UTF-8/Compose.pre https://gitlab.freedesktop.org/xorg/lib/libx11/-/blob/master... If you’re not in en_US you can find other locales and their Compose sequences in the nls directory.