static int composing;static char preview[512] = ""; static size_t nextrunetext(const char *text, size_t position, int inc);static size_t runebytes(const char *text, size_t n);static size_t runechars(const char *text, size_t n);static void preeditcaret(XIC xic, XPointer clientdata, XPointer calldata);static int preeditstart(XIC xic, XPointer clientdata, XPointer calldata);static void preeditdone(XIC xic, XPointer clientdata, XPointer calldata);static void preeditdraw(XIC xic, XPointer clientdata, XPointer calldata);static void init_input_method(XIM xim);