在ansi-term中使用ssh时，Shell会提示重复 [英] Shell prompt repeating when using ssh in ansi-term

问题描述

当我使用SSH从emacs的安全会话登录到Ubuntu 12.04机器时，提示显示不正确：

When I use SSH to login to a Ubuntu 12.04 machine from an ansi-term session in emacs the prompt displays incorrectly:

0;ubuntu@jumplin: ~ubuntu@jumplin:~$

这应该如下所示：

ubuntu@jumplin:~$

我已经尝试了一些关于utf-8和颜色支持的建议，但是它们似乎没有工作（颜色目前在ansi-term中工作正常）：

I've tried a few of the suggestions in relation to utf-8 and colour support however they don't seem to be working (colour currently works fine in ansi-term):

ansi-term中的奇怪角色在emacs

我认为这可能与一个不支持的ansi转义码或类似的东西有关，但我不是很确定 - 值对于此终端会话的PS1为：

I think it might have something to do with a unsupported ansi escape code or something like that, but I'm not really sure - the value of PS1 for this terminal session is:

\[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\u@\h:\w\$

任何建议都会非常感激:)当终端会话中出现奇怪的字符时，我总是似乎有点失落。 / p>

Any advice would be much appreciated :) I always seem to get a bit lost when strange characters show up in terminal sessions.

推荐答案

\ [\e] 0; \u @ \h：\w您的提示中的\a\] 是配置您的xterm（？）的标题栏。即使ANSI颜色由 ansi-term 支持，操作标题栏的转义序列也不是。这就是为什么你看到提示重复两次 - 第一部分应该去标题栏。

\[\e]0;\u@\h: \w\a\] in your prompt is to configure your xterm(?)'s title bar. Even though ANSI colorization is supported by ansi-term, the escape sequences that manipulate title bar are not. That is why you see the prompt repeated twice - the first section is supposed to go to the title bar.

所以要么从你的PS1中删除第一个序列，要么做类似的事情关于 Bash Prompt HOWTO 中的建议：

So either remove the first sequence from your PS1 or do something similar to what is suggested in Bash Prompt HOWTO:

function proml
{
case $TERM in
    xterm*)
        local TITLEBAR='\[\033]0;\u@\h:\w\007\]'
        ;;
    *)
        local TITLEBAR=''
        ;;
esac

PS1="${TITLEBAR}\
[\$(date +%H%M)]\
[\u@\h:\w]\
\$ "
PS2='> '
PS4='+ '
}

在 ansi-term 中， TERM 将等于 eterm-color 。

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