根据PWD更新多项缓冲区名称

问题描述

如果我使用konsole或其他终端，终端标签名称可以根据PWD而改变。但是在多项目中，缓冲区名称为 * terminal< number> * 。这不是很好因为当我们在他们之间切换时，名字不是很丰富。所以我想根据PWD重命名它。

If I use konsole or other terminal, the terminal tag name can change based on PWD. But in multi-term, the buffer name is *terminal<number>*. This is not very nice. Because when I switch between them, the name is not very informative. So I want to rename it based on PWD.

我发现绑定到term-send-raw，所以我写一个函数

I find that the is bind to term-send-raw, so I write a function

(defadvice term-send-raw (around rename-term-name activate)
  (progn
    (rename-buffer
     (concat "⇒ "
             (shell-command-to-string "pwd | xargs basename |  tr -d '\n'")
             (format-time-string " [%M ∞ %S]")))
    ad-do-it))

但问题是 pwd 命令返回终端缓冲区的 PWD ，而不是该终端中 SHELL 的 PWD

But the problem is pwd command return the PWD of the terminal buffer, while it is not the PWD of the SHELL in that terminal.

终端缓冲区的 PWD 由 defcustom multi-term-default-dir 设置。 SHELL 中的 PWD 更改时不会更改。

The PWD of the terminal buffer is set by defcustom multi-term-default-dir. And it does not change when the PWD change in the SHELL.

(defcustom multi-term-default-dir "~/"
  "The default directory for terms if current directory doesn't exist."
  :type 'string
  :group 'multi-term)

如何获得PWD SHELL在终端？

How can I get the PWD of the SHELL in the terminal?

请问。

推荐答案

AFAIK没有简单的方法来检索来自正在运行的进程的信息。

AFAIK there is no easy way to retrieve information from a running process.

但是，如果要获取当前目录，可以：

But if you want to get the current directory you could:

1. 请求shell打印


2. 解析并跟踪cd，pushd，popd等功能的命令行。


3. / proc / PID / cwd

第一种方法在 term.el （ find-library 术语

The first method is described in the header of term.el (find-libraryterm).

现在，感谢你的问题，你给了我机会这样做：

And now, thank you for your question, you gave me the opportunity to do this:

(defadvice term-send-input (after update-current-directory)
  (let* ((pid (process-id (get-buffer-process (current-buffer))))
         (cwd (file-truename (format "/proc/%d/cwd" pid))))
    (cd cwd)))

(ad-activate 'term-send-input)

这是第三种方法的天真实现，如果用户使用 su 或 ssh 。但是，我不知道是否可以使用第一种或第二种方法。

It's a naive implementation of the third method and it doesn't work if the user uses su or ssh. However, I don't know if it's possible withouth using the first or the second method.

在你的情况下，你可以替换 cd 命令与任何你想要的。

In your case, you can just replace the cd command with whatever you want.

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