How to list all currently available compose key combinations?

Is there some way to inspect the state of X to get exactly and only a list of compose key shortcuts and what they map to, either as literal keys, for example: aa å 88 ∞ or as glyph names, for example: aa Latin Small Letter A with ring above 88 Infinity or, ideally, a combination. I'm *not* using GNOME. --- After reading the links in the accepted answer I ended up with the following command : less "/usr/share/X11/locale/$(grep --max-count=1 "${LANG%.*}.UTF-8\$" /usr/share/X11/locale/locale.dir | cut --delimiter=/ --fields 1)/Compose" Unfortunately this doesn't work if Compose files are elsewhere (like in NixOS, where they are in /nix/store/*-libX11-*/share/X11/locale/*/Compose). It also doesn't work if a fallback locale is used. My locale is "en_NZ.UTF-8". There is no Compose file for this locale, but still a bunch of compose keys are available. Presumably it falls back to another, unknown locale. Finally, it doesn't take into account $XCOMPOSEFILE.