类似但不同的autoexpect是，autoexpect对于任何给定的输入，总是会产生相同的输出。然而，至少有时会尝试允许用户输入。
这是因为它将控制权交还给用户，如下所示：
thufir@dur:~/NetBeansProjects/spawnTelnet/telnet$
thufir@dur:~/NetBeansProjects/spawnTelnet/telnet$ tclsh main.tcl
got nyc
spawn telnet rainmaker.wunderground.com
Trying 35.160.169.47...
Connected to rainmaker.wunderground.com.
Escape character is '^]'.
------------------------------------------------------------------------------
* Welcome to THE WEATHER UNDERGROUND telnet service! *
------------------------------------------------------------------------------
* *
* National Weather Service information provided by Alden Electronics, Inc. *
* and updated each minute as reports come in over our data feed. *
* *
* **Note: If you cannot get past this opening screen, you must use a *
* different version of the "telnet" program--some of the ones for IBM *
* compatible PC's have a bug that prevents proper connection. *
* *
* comments: jmasters@wunderground.com *
------------------------------------------------------------------------------
Press Return to continue:
Press Return for menu
or enter 3 letter forecast city code-- nyc
Weather Conditions at 02:51 AM EDT on 08 May 2020 for New York JFK, NY.
Temp(F) Humidity(%) Wind(mph) Pressure(in) Weather
========================================================================
54 55% NW at 16 29.83 Mostly Cloudy
Forecast for New York, NY
327 am EDT Fri may 8 2020
.Today...Cloudy. A slight chance of rain this morning, then rain
this afternoon. Highs in the upper 50s. Northwest winds around
5 mph, becoming south this afternoon. Chance of rain 80 percent.
.Tonight...Rain in the evening, then rain likely with a slight
chance of snow after midnight. Cold with lows in the upper 30s.
East winds 5 to 10 mph with gusts up to 20 mph, increasing to
northwest 15 to 20 mph with gusts up to 30 mph after midnight.
Chance of precipitation 90 percent.
.Saturday...Partly sunny. A slight chance of showers in the
afternoon. Windy with highs around 50. Northwest winds 20 to
30 mph with gusts up to 40 mph. Chance of rain 20 percent.
.Saturday night...Partly cloudy with a slight chance of showers
in the evening, then mostly clear after midnight. Breezy with
lows in the upper 30s. West winds 15 to 25 mph with gusts up to
40 mph. Chance of rain 20 percent.
Press Return to continue, M to return to menu, X to exit: x
Connection closed by foreign host.
thufir@dur:~/NetBeansProjects/spawnTelnet/telnet$
运行的代码main.tcl：
package provide weather 1.0
package require Tcl 8.5
package require Expect
namespace eval ::tutstack {
}
proc ::tutstack::connect {arg1} {
puts "got $arg1"
spawn telnet rainmaker.wunderground.com
set telnet $spawn_id
expect -nocase "Press Return to continue:"
send ""
interact
}
使用上述proc内容时，我会添加更多内容，如何interact打开/关闭甚至更好地interact与非交互混合？
也许推迟或某种“无”或“不采取行动”？
所以只有当期望没有找到任何东西然后通过交互然后expect以某种方式重新“打开”......？