将Emacs变量传递给minibuffer shell命令 [英] Passing Emacs variables to minibuffer shell commands

问题描述

我可以通过点击 M - ！快速运行shell命令。我想做的一件事是对当前文件执行shell快速操作。一个例子是通过perforce检查文件：

I can run a shell command quickly by hitting M-!. One thing I'd like to do is perform shell quick operations on the current file. An example would be checking the file out through perforce:

M - ！ p4 edit buffer-file-name RET

（是的，有强制整合，但我对minishell /变量问题更感兴趣，而不是一个特定的工作流程）

(Yes there are perforce integrations, but I'm more interested in the minishell/variable problem rather than a specific workflow)

当然，在发送命令之前，不评估 buffer-file-name 变量到这个shell。

Of course, the buffer-file-name variable is not evaluated before the command is sent to the shell.

有没有一个容易的飞行方法呢？或者我必须滚动自定义的elisp函数？

Is there an easy on-the-fly way to do this? Or will I have to roll a custom elisp function?

推荐答案

确实使用C-u M-：几乎是正确的。我不太确定在 eval-to-shell-argument 中使用 shell-quote-argument ，因为它只在字符串上工作，使得不可能使用 eval-to-shell-argument 插入一个数字或符号。您可以尝试以下方式：

Indeed using C-u M-: is almost right. I'm not so sure about using shell-quote-argument in eval-to-shell-argument since it only works on strings making it impossible to use eval-to-shell-argument to insert a number or a symbol. You could try something like:

(defun sm-minibuffer-insert-val (exp)
  (interactive
   (list (let ((enable-recursive-minibuffers t))
           (read-from-minibuffer "Insert: "
                                 nil read-expression-map t
                                 'read-expression-history))))
    (let ((val (with-selected-window (minibuffer-selected-window)
                 (eval exp)))
          (standard-output (current-buffer)))
      (prin1 val)))

然后将此函数绑定到您的minibuffer中（define-key minibuffer-local-map [？\M-：]'sm-minibuffer-insert-val）。
当然，如果你想插入的唯一的东西是buffer-file-name，那么你的 execute-shell-command-on-buffer 更简单。

and then bind this function in your minibuffer with (define-key minibuffer-local-map [?\M-:] 'sm-minibuffer-insert-val). Of course, if the only thing you ever want to insert is the buffer-file-name, then your execute-shell-command-on-buffer is simpler.

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