124   std::string error_msg;  in Execute()  local
127     error_msg.assign("ambiguous command ");  in Execute()
129     error_msg.assign("invalid command ");  in Execute()
131   error_msg.append("'");  in Execute()
132   error_msg.append(std::string(GetCommandName()));  in Execute()
133   error_msg.append(" ");  in Execute()
134   error_msg.append(std::string(sub_command));  in Execute()
135   error_msg.append("'.");  in Execute()
138     error_msg.append(" Possible completions:");  in Execute()
140       error_msg.append("\n\t");  in Execute()
141       error_msg.append(match);  in Execute()
144   error_msg.append("\n");  in Execute()
145   result.AppendRawError(error_msg.c_str());  in Execute()