I *might* have a sensible solution that will work with LC_ALL defined.

The problem has been that in x2sqKeyInput we  use XmbLookupString which cannot work with a key release. In x2sqKeyPlain we use XLookupString which *does* work with a key release.

So my suggestion is to make use of x2sqKeyPlain within the x2sqKeyInput (and probably the x2sqKeyCompositionInput too?) key release. It seems to work ok in a shell where 

echo $LC_ALL
en_US.UTF-8

and the logging shows me that we are going through that route.

Attached the C file for comparison; note no change has been made to the x2sqKeyCompositionInput routine yet.

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Does this seem a reasonable thing to do? 

tim
--
tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
Common sense – so rare it’s a goddam superpower