DEBUGGING

                # The following lines are useful for debugging: they write the
                # full command (with arguments quoted and environment
                # variables set) to a file named "command.debug" in the
                # current directory. See Dialog.__call_program() in dialog.py.

                import commands
                
                envvar_settings_list = []

                if new_environ.has_key("DIALOGRC"):
                     envvar_settings_list.append(
                         "DIALOGRC='%s'" % new_environ["DIALOGRC"])

                for var in _dialog_exit_status_vars.keys():
                    varname = "DIALOG_" + var
                    envvar_settings_list.append(
                        "%s=%s" % (varname, new_environ[varname]))

                envvar_settings = string.join(envvar_settings_list, " ")

                file("command.debug", "wb").write(
                    envvar_settings +
                    string.join(map(commands.mkarg, arglist), ""))