Hi, all.

I expect different output in xetex and luatex using context. and I
think the problem is quite serious although I do not speak Turkish.
in turkish, fi can not be treat as ligatures and I can see luatex
handle that quite well. however, in xetex, fi are treated as
ligatures.
I attach the files and output here. I don't know it is a bug in xetex,
context or dvipdfmx:(

Yue Wang