pub type Tcl_DriverSetOptionProc = extern "C" fn(instanceData: ClientData, interp: *mut Tcl_Interp, optionName: *const c_char, value: *const c_char) -> c_int;pub type Tcl_DriverSetOptionProc = extern "C" fn(instanceData: ClientData, interp: *mut Tcl_Interp, optionName: *const c_char, value: *const c_char) -> c_int;