[Uim] Key combinations still break input

[David Oftedal]

> I'm not understanging all of your problems yet, but I confirmed that
> following patch make possible to input "yeobuseyo". But I'm not
> confident in this change doesn't cause another bugs. So please test this
> patch. If it's OK, I'll commit.

Yup, that patch fixed it in an instant! I hope it works as well for 
everyone else.

I don't know how to patch things, so I just applied the change manually. 
One thing I noticed is that the change doesn't seem to be on line 123, 
but 126. But that's probably OK?

-David