rust_tcl_sys::tcl::Tcl_CmdTraceProc

type Tcl_CmdTraceProc =  extern "C" fn(clientData: ClientData, interp: *mut Tcl_Interp, level: c_int, command: *mut c_char, _proc: *mut Tcl_CmdProc, cmdClientData: ClientData, argc: c_int, argv: *mut *const c_char);