pub unsafe extern "C" fn Tcl_TraceVar2(
interp: *mut Tcl_Interp,
part1: *const c_char,
part2: *const c_char,
flags: c_int,
proc_: Tcl_VarTraceProc,
clientData: ClientData,
) -> c_intpub unsafe extern "C" fn Tcl_TraceVar2(
interp: *mut Tcl_Interp,
part1: *const c_char,
part2: *const c_char,
flags: c_int,
proc_: Tcl_VarTraceProc,
clientData: ClientData,
) -> c_int