I am assuming that the original poster means targeting the currently selected window in the same frame. In the event the original poster is desirous of targeting a specific window in a different frame, then see this related thread for a complex example: https://stackoverflow.com/questions/18346785/how-to-intercept-a-file-before-it-opens-and-decide-which-frame
I copied the built-in function
shell and created a new one called
shell-get-buffer-create, which uses
with-current-buffer ... instead of
pop-to-buffer. This new function generates or locates the
*shell* buffer without selecting it in any window.
To display the
*shell* buffer in the currently selected window use:
(set-window-buffer (selected-window) (shell-get-buffer-create))
I created a custom function called
my-display-buffer that can display in four directions -- left, right, above, or below. There are three possibilities: (1) If a window on the frame already displays the target buffer, then just reuse the same window. (2) If there is already a window in the specified direction in relation to the selected window, then display the target buffer in said window. (3) If there is no window in the specified direction, then create one in that direction and display the target buffer in said window.
(my-display-buffer (shell-get-buffer-create) nil 'left)
(my-display-buffer (shell-get-buffer-create) nil 'right)
(my-display-buffer (shell-get-buffer-create) nil 'above)
(my-display-buffer (shell-get-buffer-create) nil 'below)
(defun shell-get-buffer-create (&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
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.)"
(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))))
(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.
"Default directory: " default-directory default-directory
(setq buffer (if (or buffer (not (derived-mode-p 'shell-mode))
(get-buffer-create (or buffer "*shell*"))
;; If the current buffer is a dead shell buffer, use it.
;; On remote hosts, the local `shell-file-name' might be useless.
(if (and (called-interactively-p 'any)
(null (getenv "ESHELL")))
(set (make-local-variable 'explicit-shell-file-name)
"Remote shell path: " default-directory shell-file-name
;; The buffer's window must be correctly set when we call comint (so
;; that comint sets the COLUMNS env var properly).
(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))
(defun my-display-buffer (buffer alist direction &optional size pixelwise)
"BUFFER: The buffer that will be displayed.
ALIST: See the doc-string of `display-buffer' for more information.
DIRECTION: Must use one of these symbols: 'left 'right 'below 'above
SIZE: See the doc-string for `split-window'.
PIXELWISE: See the doc-string for `split-window'.
There are three possibilities:
- (1) If a window on the frame already displays the target buffer,
then just reuse the same window.
- (2) If there is already a window in the specified direction in relation
to the selected window, then display the target buffer in said window.
- (3) If there is no window in the specified direction, then create one
in that direction and display the target buffer in said window."
((get-buffer-window buffer (selected-frame)))
(split-window (selected-window) size direction pixelwise)))))
(window--display-buffer buffer window 'window alist display-buffer-mark-dedicated)
And, here is an
eshell-get-buffer-create that works the same as above ...
(defun eshell-get-buffer-create (&optional arg)
"Create an interactive Eshell buffer. Return the Eshell buffer,
creating it if needed. The buffer used for Eshell sessions is
determined by the value of `eshell-buffer-name'. A numeric prefix
arg (as in `C-u 42 M-x eshell RET') switches to the session with
that number, creating it if necessary. A nonnumeric prefix arg
means to createa new session. Returns the buffer selected (or created)."
(let ((buf (cond ((numberp arg)
(get-buffer-create (format "%s<%d>"
(cl-assert (and buf (buffer-live-p buf)))
(unless (derived-mode-p 'eshell-mode)