期望脚本箭头键 [英] Expect script arrow keys

问题描述

我不知道如何使用Expect发送箭头键，因此我为所有箭头键生成了autoexpect脚本，并发现autoexpect为右箭头键生成了此字符:

I didn't know that how to send arrow keys using expect, hence I generated autoexpect script for all the arrow keys and found out that autoexpect generates this character for right arrow key:

send -- "^[\[C"

我在自定义脚本中使用了相同的send命令，但出现以下错误:

I used the same send command in my custom script and I'm getting a following error:

while executing
"send -- "^[\[C"
expect eof
"
    (file "script_auto.exp" line 38)

我应该怎么做才能发送右箭头键.任何帮助将不胜感激.

What exactly shall I do to send the right arrow key. Any help would be appreciated.

推荐答案

"^[\[C"是Tcl中的无效字符串. ^[应该是\033的ESC字符.所以试试这个:

"^[\[C" is an invalid string in Tcl. ^[ should be the ESC char which is \033. So try this:

send "\033\[C"

已更新:

为当前终端(如在$TERM中)获取正确的右箭头键的最安全方法是使用tput:

The safest way to get the correct RIGHT ARROW key for current terminal (as in $TERM) is to use tput:

[bash] # v=$(tput cuf1)
[bash] # printf '%q\n' "$v"
$'\E[C'
[bash] #

要了解cuf1的含义，请搜索terminfo的手册页. :)

To know what cuf1 means, search terminfo's man page. :)

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