I've just upgraded to 13.10 and noticed that dead keys are not working anymore in emacs (a keystroke to ' leads emacs to display <dead-acute> is undefined instead of waiting to the next key. In addition, use of the compose key leads to <Multi_key> is undefined and it is impossible to use keybindings such as <M-^>. Other applications work fine as far as I can tell.

A brief search on the internet suggested to (require 'isotransl) to .emacs. This solves the first issue, but not the other ones.

Another possible workaround seen on the web is to launch emacs with an empty XMODIFIERS variable, as XMODIFIERS='' emacs, instead of XMODIFIERS= @im=ibus which seems to be the default in 13.10. Then everything works fine, but it looks like a kludge. Is there a way to make emacs work with ibus on this subject?