Next version of internationalized input for X11. On my machine (famous last words :-) with a US English keyboard and locale I can compose ` and e and get a text
input event with the character è. You still get the keypress keyrelease events for the individual keys that go into composing the character.

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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402742