Mx shell在其他窗口打开shell

Question

在以前的emacs中，“Mx shell”在当前窗口中新建了一个shell缓冲区。

但最近，我将我的emacs更新为GNU Emacs 26.0.50.2。 “Mx shell”在其他窗口中新建了一个shell缓冲区。 我搜索谷歌，找不到答案。 有谁知道如何防止这种行为。

Answer 1

在.emacs文件中添加以下行：

(push (cons "\\*shell\\*" display-buffer--same-window-action) display-buffer-alist)

这为我修好了。 我在Mac上使用eMacs 25.2（9.0），并且在另一个框架中开放的外壳变得非常恼火，甚至在只有一个框架时打开一个新框架。 这是我得到这个答案的来源。

Answer 2

除非您自定义shell缓冲区的名称，否则这应该是您所需要的：

(add-to-list 'display-buffer-alist
             `(,(regexp-quote "*shell") display-buffer-same-window))

要处理所有shell缓冲区，无论它们的名称如何，您都可以使用以下建议：

(defun shell-same-window-advice (orig-fn &optional buffer)
  "Advice to make `shell' reuse the current window.

Intended as :around advice."
  (let* ((buffer-regexp
          (regexp-quote
           (cond ((bufferp buffer)  (buffer-name buffer))
                 ((stringp buffer)  buffer)
                 (:else             "*shell*"))))
         (display-buffer-alist
          (cons `(,buffer-regexp display-buffer-same-window)
                display-buffer-alist)))
    (funcall orig-fn buffer)))

(advice-add 'shell :around #'shell-same-window-advice)

Answer 3

原因是shell使用(pop-to-buffer buffer)而不是(switch-to-buffer buffer) 。 我不知道如何建议这个功能，所以我不能给你一个合适的答案。 但是，如果您只希望shell以您希望的方式工作，您只需在配置中添加整个功能即可。

也许其他人可以用建议替换这个功能。 我会对这个解决方案感兴趣。

(defun shell (&optional buffer)
  "Run an inferior shell, with I/O through BUFFER (which defaults to `*shell*').
Interactively, a prefix arg means to prompt for BUFFER.
If `default-directory' is a remote file name, it is also prompted
to change if called with a prefix arg.

If BUFFER exists but shell process is not running, make new shell.
If BUFFER exists and shell process is running, just switch to BUFFER.
Program used comes from variable `explicit-shell-file-name',
 or (if that is nil) from the ESHELL environment variable,
 or (if that is nil) from `shell-file-name'.
If a file `~/.emacs_SHELLNAME' exists, or `~/.emacs.d/init_SHELLNAME.sh',
it is given as initial input (but this may be lost, due to a timing
error, if the shell discards input when it starts up).
The buffer is put in Shell mode, giving commands for sending input
and controlling the subjobs of the shell.  See `shell-mode'.
See also the variable `shell-prompt-pattern'.

To specify a coding system for converting non-ASCII characters
in the input and output to the shell, use \\[universal-coding-system-argument]
before \\[shell].  You can also specify this with \\[set-buffer-process-coding-system]
in the shell buffer, after you start the shell.
The default comes from `process-coding-system-alist' and
`default-process-coding-system'.

The shell file name (sans directories) is used to make a symbol name
such as `explicit-csh-args'.  If that symbol is a variable,
its value is used as a list of arguments when invoking the shell.
Otherwise, one argument `-i' is passed to the shell.

\(Type \\[describe-mode] in the shell buffer for a list of commands.)"
  (interactive
   (list
    (and current-prefix-arg
         (prog1
             (read-buffer "Shell buffer: "
                          ;; If the current buffer is an inactive
                          ;; shell buffer, use it as the default.
                          (if (and (eq major-mode 'shell-mode)
                                   (null (get-buffer-process (current-buffer))))
                              (buffer-name)
                            (generate-new-buffer-name "*shell*")))
           (if (file-remote-p default-directory)
               ;; It must be possible to declare a local default-directory.
               ;; FIXME: This can't be right: it changes the default-directory
               ;; of the current-buffer rather than of the *shell* buffer.
               (setq default-directory
                     (expand-file-name
                      (read-directory-name
                       "Default directory: " default-directory default-directory
                       t nil))))))))
  (setq buffer (if (or buffer (not (derived-mode-p 'shell-mode))
                       (comint-check-proc (current-buffer)))
                   (get-buffer-create (or buffer "*shell*"))
                 ;; If the current buffer is a dead shell buffer, use it.
                 (current-buffer)))

  ;; On remote hosts, the local `shell-file-name' might be useless.
  (if (and (called-interactively-p 'any)
           (file-remote-p default-directory)
           (null explicit-shell-file-name)
           (null (getenv "ESHELL")))
      (with-current-buffer buffer
        (set (make-local-variable 'explicit-shell-file-name)
             (file-remote-p
              (expand-file-name
               (read-file-name
                "Remote shell path: " default-directory shell-file-name
                t shell-file-name))
              'localname))))

  ;; The buffer's window must be correctly set when we call comint (so
  ;; that comint sets the COLUMNS env var properly).
  (switch-to-buffer buffer)
  (unless (comint-check-proc buffer)
    (let* ((prog (or explicit-shell-file-name
                     (getenv "ESHELL") shell-file-name))
           (name (file-name-nondirectory prog))
           (startfile (concat "~/.emacs_" name))
           (xargs-name (intern-soft (concat "explicit-" name "-args"))))
      (unless (file-exists-p startfile)
        (setq startfile (concat user-emacs-directory "init_" name ".sh")))
      (apply 'make-comint-in-buffer "shell" buffer prog
             (if (file-exists-p startfile) startfile)
             (if (and xargs-name (boundp xargs-name))
                 (symbol-value xargs-name)
               '("-i")))
      (shell-mode)))
  buffer)