Issue 59435

The spec for issue 42964 calls for support menu shortcuts both with

(a) Thai UI and English keyboard layout
(b) English UI and Thai keyboard layout

2.0.1 has implemented this with the exception of (a) in the Unix case, on the
basis that this cannot be done in Unix.

I may well be missing something here, but it seems to me that it can be done by
using the Xkb extension (which is already used by OOo in other places and is
ubiquitous on contemporary Unix systems), specifically

1) get a keyboard event
2) from the keyboard event get a keycode
3) use XkbKeycodeToKeysym() passing it the group number for the Thai keyboard
group together with the keycode to get a Thai keysym
4) use eg http://www.cl.cam.ac.uk/~mgk25/ucs/keysym2ucs.c to map the keysym to
Unicode