I use XIM under Debian Linux with Gnome 2. Many compose sequences are already defined in the system, including the one for
palec@Palec:~$ grep PLUS-MINUS /usr/share/X11/locale/en_US.UTF-8/Compose <Multi_key> <plus> <minus> : "±" plusminus # PLUS-MINUS SIGN
This does not work with numpad of my Lenovo G550’s keyboard.
I noticed that numbers on numpad require
KP_ prefix to be matched, so I tried adding copy of the original rule with keys changed to
KP_minus to my
~/.XCompose, where I already have other rules I use in addition to those from the system
Compose file. No luck though.
I did not manage to find any useful doc for XIM nor
~/.XCompose. Is there any? Most of information on XIM and compose sequences I got from forums I found by googling. How to get the name of a key for use in
~/.XCompose? Particularly, what are they for numpad + and -?
I do not insist on XIM, but I want to be able to configure custom compose sequences. If there is another, preferably better documented solution, I’d like to hear about it.