I use alt+space for toggling ibus input method on/off. It stopped working on vte based terminal emulators (e.g. gnome-terminal, roxterm) in ibus 1.3.5-2. git bisect points to: | commit 7e715146794d5fa5324885f8d1dcebb8805bc31b | Author: Peng Huang | Date: Sat Jun 12 08:53:43 2010 +0800 | | Disable snooper by default. | Setting IBUS_SNOOPER_APPS env variable fixed the problem. But I believe alt+X hotkey should work by default.
Keyboard SNOOPER is not a normal way to filter key events. It causes some problem applications like browsers. So I disable it by default. You could use IBUS_SNOOPER_APPS env to enable it for some applications. For example: IBUS_SNOOPER_APPS="gnome-terminal,roxterm" or ".*term,apps" or use IBUS_SNOOPER=true to enable it for all applications.
Thanks for the information on the environment variables. I think they need to be documented in the ibus README.