* Re: [Emacs-diffs] master c711991: Allow not erase output buffer in shell commands
[not found] ` <20160816094404.013EC220155@vcs.savannah.gnu.org>
@ 2016-08-22 16:41 ` Stefan Monnier
0 siblings, 0 replies; 5+ messages in thread
From: Stefan Monnier @ 2016-08-22 16:41 UTC (permalink / raw)
To: emacs-devel; +Cc: Tino Calancha
> --- a/doc/emacs/misc.texi
> +++ b/doc/emacs/misc.texi
> @@ -771,6 +771,14 @@ the output buffer. But if you change the value of the variable
> @code{shell-command-default-error-buffer} to a string, error output is
> inserted into a buffer of that name.
> +@vindex shell-command-not-erase-buffer
> + By default, the output buffer is erased between shell commands.
> +If you change the value of the variable
> +@code{shell-command-not-erase-buffer} to a non-@code{nil} value,
> +the output buffer is not erased. This variable also controls where to
> +set the point in the output buffer after the command completes; see the
> +documentation of the variable for details.
misc.texi *is* the documentation, so it makes no sense for it to say "see the
documentation of the variable for details".
> --- a/etc/NEWS
> +++ b/etc/NEWS
> @@ -56,6 +56,16 @@ affected by this, as SGI stopped supporting IRIX in December 2013.
> * Changes in Emacs 25.2
> +++
> +** The new user option 'shell-command-not-erase-buffer' controls
> +if the output buffer is erased between shell commands; if non-nil,
> +the output buffer is not erased; this variable also controls where
> +to set the point in the output buffer: beginning of the output,
> +end of the buffer or save the point.
> +When 'shell-command-not-erase-buffer' is nil, the default value,
> +the behaviour of 'shell-command', 'shell-command-on-region' and
> +'async-shell-command' is as usual.
etc/NEWS on the other hand is *not* where we put documentation. So the
above shouldn't be a paragraph but a just a line announcing the new var.
> +(defcustom shell-command-not-erase-buffer nil
Usually we use "dont" or "inhibit" (please check to see which is more
standard/common within the core Elisp code, or better yet: which is
better) rather than just "not".
> + "If non-nil, output buffer is not erased between shell commands.
You might as well say "before" rather than "between", so it's more precise.
> +Also, a non-nil value set the point in the output buffer
> +once the command complete.
Why use a single var for those two meanings?
The `end-last-out' choice makes a lot of sense also when combined with
"do erase", yet your system prevents me from using both at the same time.
> +The value `beg-last-out' set point at the beginning of the output,
Try to be more explicit about which output we're talking about.
Eg. here I'd probably say "beginning of the new output".
> +`end-last-out' set point at the end of the buffer,
And here "end of the new output".
> `save-point' +restore the buffer position before the command."
Makes it sound like we restore the buffer position and then we run the
command, rather than after the command we restore the position it
had earlier.
> +(defvar shell-command-saved-pos nil
This is an internal variable. So its name should start with
"shell-command--" (notice the double dash).
> +It is an alist (BUFFER . POS), where BUFFER is the output
> +buffer, and POS is the point position in BUFFER once the
> command finish.
Why use an alist rather than set the variable buffer-locally?
> +This variable is used when `shell-command-not-erase-buffer' is non-nil.")
Variable should generally say what they are expected to hold, rather
than who uses them.
> +(defun shell-command--save-pos-or-erase ()
^^
great!
> + (let ((sym shell-command-not-erase-buffer)
`sym' is an odd name since we don't care about the fact that it's
a symbol (we're not going to call things like symbol-name, ...).
> + pos)
> + (setq buffer-read-only nil)
you can move this (setq buffer-read-only nil) before the previous `let',
so that you can then fold the `setq' of `pos' into the `let'.
> + ;; Setting buffer-read-only to nil doesn't suffice
> + ;; if some text has a non-nil read-only property,
> + ;; which comint sometimes adds for prompts.
> + (setq pos
> + (cond ((eq sym 'save-point) (point))
> + ((eq sym 'beg-last-out) (point-max))
> + ((not sym)
> + (let ((inhibit-read-only t))
> + (erase-buffer) nil))))
Here you can use
(pcase shell-command-not-erase-buffer
('save-point ...)
('beg-last-out ...)
... )
instead.
> + (when (buffer-live-p buf)
> + (let ((win (car (get-buffer-window-list buf)))
Why use get-buffer-window-list rather than get-buffer-window?
Why use a nil value for `all-frames'?
> + (pmax (with-current-buffer buf (point-max))))
> + (unless (and pos (memq sym '(save-point beg-last-out)))
> + (setq pos pmax))
Why not compute pmax here on the fly, rather than pre-compute it before
we know if we'll need it?
> + ;; Set point in the window displaying buf, if any; otherwise
> + ;; display buf temporary in selected frame and set the point.
> + (if win
> + (set-window-point win pos)
> + (save-window-excursion
> + (let ((win (display-buffer
> + buf
> + '(nil (inhibit-switch-frame . t)))))
> + (set-window-point win pos)))))))))
You *cannot* undo a `display-buffer' after the fact (the display-buffer
call can have very visible side-effects in itself. For example, in my
setup, it creates a new frame and waits for me to manually place this
frame on the screen. No amount of save-window-excursion will make me
forget that I had to place the frame manually, and worse yet: it might
even fail to get rid of that new frame).
If the buffer is not displayed, then there's simply no set-window-point
to perform: use `goto-char' instead.
Stefan
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Emacs-diffs] master c711991: Allow not erase output buffer in shell commands
@ 2016-09-20 15:10 Tino Calancha
2016-09-20 16:22 ` Stefan Monnier
0 siblings, 1 reply; 5+ messages in thread
From: Tino Calancha @ 2016-09-20 15:10 UTC (permalink / raw)
To: Stefan Monnier; +Cc: Emacs developers, tino.calancha
Hi Stefan,
thank you very much for your comments.
I have addressed all of them. See the patch below.
On Wed, 22 Aug 2016, Stefan Monnier wrote:
>misc.texi *is* the documentation, so it makes no sense for it to say "see the
>documentation of the variable for details".
>etc/NEWS on the other hand is *not* where we put documentation. So the
>above shouldn't be a paragraph but a just a line announcing the new var.
Fixed. Thanks.
>> +(defcustom shell-command-not-erase-buffer nil
>Usually we use "dont" or "inhibit" (please check to see which is more
>standard/common within the core Elisp code, or better yet: which is
>better) rather than just "not".
"inhibit" appears factor ~2 times than "dont". I have chosen "dont"
which is shorter and quit clear.
>> + "If non-nil, output buffer is not erased between shell commands.
>You might as well say "before" rather than "between", so it's more precise.
Fixed. Thanks.
>> +Also, a non-nil value set the point in the output buffer
>> +once the command complete.
>Why use a single var for those two meanings?
>The `end-last-out' choice makes a lot of sense also when combined with
>"do erase", yet your system prevents me from using both at the same time.
Added a new option 'shell-command-set-buffer-point' which controls the point
position.
>> +The value `beg-last-out' set point at the beginning of the output,
>Try to be more explicit about which output we're talking about.
Eg. here I'd probably say "beginning of the new output".
>> +`end-last-out' set point at the end of the buffer,
>And here "end of the new output".
Fixd. Thanks.
>> `save-point' +restore the buffer position before the command."
>Makes it sound like we restore the buffer position and then we run the
>command, rather than after the command we restore the position it
>had earlier.
I reduced the sentence to just say: and `save-point' restore the point.
From the context should be clear that the point is set to the value
before the command started.
>> +(defvar shell-command-saved-pos nil
>This is an internal variable. So its name should start with
>"shell-command--" (notice the double dash).
Fixed. Thanks.
>> +It is an alist (BUFFER . POS), where BUFFER is the output
>> +buffer, and POS is the point position in BUFFER once the
>> command finish.
>Why use an alist rather than set the variable buffer-locally?
Not coffee enough when i wrote that part.
Changed to a permanent buffer local variable. Thanks.
>> +This variable is used when `shell-command-not-erase-buffer' is non-nil.")
>Variable should generally say what they are expected to hold, rather
>than who uses them.
Dropped the excess of literature. Thank you.
>> +(defun shell-command--save-pos-or-erase ()
^^
> great!
I have my moments... sometimes; don't get used.
>> + (let ((sym shell-command-not-erase-buffer)
>`sym' is an odd name since we don't care about the fact that it's
>a symbol (we're not going to call things like symbol-name, ...).
Not uing `sym' anymore. Thanks.
>> + pos)
>> + (setq buffer-read-only nil)
>you can move this (setq buffer-read-only nil) before the previous `let',
>so that you can then fold the `setq' of `pos' into the `let'.
Good idea, fixed. Thank you.
>> + ;; Setting buffer-read-only to nil doesn't suffice
>> + ;; if some text has a non-nil read-only property,
>> + ;; which comint sometimes adds for prompts.
>> + (setq pos
>> + (cond ((eq sym 'save-point) (point))
>> + ((eq sym 'beg-last-out) (point-max))
>> + ((not sym)
>> + (let ((inhibit-read-only t))
>> + (erase-buffer) nil))))
>Here you can use
> (pcase shell-command-not-erase-buffer
> ('save-point ...)
> ('beg-last-out ...)
> ... )
>instead.
Implemented. Thank you.
>> + (when (buffer-live-p buf)
>> + (let ((win (car (get-buffer-window-list buf)))
>Why use get-buffer-window-list rather than get-buffer-window?
>Why use a nil value for `all-frames'?
I was doing something wrong. Fixed. Thank you.
>> + (pmax (with-current-buffer buf (point-max))))
>> + (unless (and pos (memq sym '(save-point beg-last-out)))
>> + (setq pos pmax))
>Why not compute pmax here on the fly, rather than pre-compute it before
>we know if we'll need it?
Right. Fixed. Thanks.
>> + ;; Set point in the window displaying buf, if any; otherwise
>> + ;; display buf temporary in selected frame and set the point.
>> + (if win
>> + (set-window-point win pos)
>> + (save-window-excursion
>> + (let ((win (display-buffer
>> + buf
>> + '(nil (inhibit-switch-frame . t)))))
>> + (set-window-point win pos)))))))))
>You *cannot* undo a `display-buffer' after the fact (the display-buffer
>call can have very visible side-effects in itself. For example, in my
>setup, it creates a new frame and waits for me to manually place this
>frame on the screen. No amount of save-window-excursion will make me
>forget that I had to place the frame manually, and worse yet: it might
>even fail to get rid of that new frame).
>
>If the buffer is not displayed, then there's simply no set-window-point
>to perform: use `goto-char' instead.
Ok, fixed as you suggest.
I guess, in cases where the buffer is not displayed, (goto-char pos)
might not always work as `set-window-point': a posterior
display of the buffer maybe doesn't show point at pos.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
From f87db51ef46d4ad03cdc612d4fded5ecef39df41 Mon Sep 17 00:00:00 2001
From: Tino Calancha <tino.calancha@gmail.com>
Date: Tue, 20 Sep 2016 23:18:07 +0900
Subject: [PATCH] Split shell-command-dont-erase-buffer in 2 options
One controls if the output buffer should be erased; the
other controls the position of the point after
the command completes.
Suggested by Stefan Monnier in:
https://lists.gnu.org/archive/html/emacs-devel/2016-08/msg00463.html
* lisp/simple.el (shell-command-set-buffer-point): New option;
control position of point in the output buffer after command completes.
(shell-command-dont-erase-buffer): Fix doc string.
(shell-command--saved-pos): Rename from shell-command-saved-pos.
Make permanent buffer local.
(shell-command--save-pos-or-erase): Use shell-command-set-buffer-point.
(shell-command--set-point-after-cmd): Idem.
Do not force a display of the output buffer.
(shell-command-on-region): Use shell-command-set-buffer-point.
* doc/emacs/misc.texi (shell-command-dont-erase-buffer)
(shell-command-set-buffer-point): Update documentation.
;* etc/NEWS (Changes in Emacs 25.2):
;Add entry for shell-command-set-buffer-point.
;Update entry for shell-command-dont-erase-buffer.
---
doc/emacs/misc.texi | 18 +++++++---
etc/NEWS | 12 +++----
lisp/simple.el | 98 +++++++++++++++++++++++++++--------------------------
3 files changed, 69 insertions(+), 59 deletions(-)
diff --git a/doc/emacs/misc.texi b/doc/emacs/misc.texi
index 502ccad..54e2a3e 100644
--- a/doc/emacs/misc.texi
+++ b/doc/emacs/misc.texi
@@ -772,12 +772,22 @@ Single Shell
inserted into a buffer of that name.
@vindex shell-command-dont-erase-buffer
- By default, the output buffer is erased between shell commands.
+ By default, the output buffer is erased before shell commands.
If you change the value of the variable
@code{shell-command-dont-erase-buffer} to a non-@code{nil} value,
-the output buffer is not erased. This variable also controls where to
-set the point in the output buffer after the command completes; see the
-documentation of the variable for details.
+the output buffer is not erased.
+
+@vindex shell-command-set-buffer-point
+ The variable @code{shell-command-set-buffer-point} controls where
+to set the point in the output buffer after the command completes:
+@code{beg-last-out} set point at the beginning of the new output,
+@code{end-last-out} set point at the end of the new output, and
+@code{save-point} restores the point to its position before the
+command started.
+
+ When @code{shell-command-not-erase-buffer} is @code{nil}, the default
+value, the position of the point is unspecified, i.e., an implementation
+detail.
@node Interactive Shell
@subsection Interactive Subshell
diff --git a/etc/NEWS b/etc/NEWS
index 9b992d0..6ba7581 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -68,13 +68,11 @@ inferior shell with the buffer region as input.
+++
** The new user option 'shell-command-dont-erase-buffer' controls
-if the output buffer is erased between shell commands; if non-nil,
-the output buffer is not erased; this variable also controls where
-to set the point in the output buffer: beginning of the output,
-end of the buffer or save the point.
-When 'shell-command-dont-erase-buffer' is nil, the default value,
-the behaviour of 'shell-command', 'shell-command-on-region' and
-'async-shell-command' is as usual.
+if the output buffer is erased before shell commands.
+
++++
+** The new user option 'shell-command-set-buffer-point' controls
+where to set point in the output buffer of a shell command.
+++
** The new user option 'mouse-select-region-move-to-beginning'
diff --git a/lisp/simple.el b/lisp/simple.el
index 7e68baa..7b5e556 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -38,25 +38,31 @@ compilation-current-error
(defvar compilation-context-lines)
(defcustom shell-command-dont-erase-buffer nil
- "If non-nil, output buffer is not erased between shell commands.
-Also, a non-nil value set the point in the output buffer
-once the command complete.
-The value `beg-last-out' set point at the beginning of the output,
-`end-last-out' set point at the end of the buffer, `save-point'
-restore the buffer position before the command."
+ "If non-nil, output buffer is not erased before shell commands."
:type '(choice
(const :tag "Erase buffer" nil)
+ (const :tag "Don't erase buffer" t))
+ :group 'shell
+ :version "25.2")
+
+(defcustom shell-command-set-buffer-point nil
+ "If non-nil, set point in the output buffer once the command complete.
+The value `beg-last-out' set point at the beginning of the new output,
+`end-last-out' set point at the end of the new output, and `save-point'
+restore the point.
+Note that `save-point' only has sense if `shell-command-dont-erase-buffer'
+is non-nil."
+ :type '(choice
+ (const :tag "None" nil)
(const :tag "Set point to beginning of last output" beg-last-out)
(const :tag "Set point to end of last output" end-last-out)
- (const :tag "Save point" save-point))
+ (const :tag "Restore point" save-point))
:group 'shell
:version "25.2")
-(defvar shell-command-saved-pos nil
- "Point position in the output buffer after command complete.
-It is an alist (BUFFER . POS), where BUFFER is the output
-buffer, and POS is the point position in BUFFER once the command finish.
-This variable is used when `shell-command-dont-erase-buffer' is non-nil.")
+(defvar-local shell-command--saved-pos nil
+ "Point position in the output buffer after command complete.")
+(put 'shell-command--saved-pos 'permanent-local t)
(defcustom idle-update-delay 0.5
"Idle time delay before updating various things on the screen.
@@ -3234,49 +3240,44 @@ async-shell-command-buffer
(defun shell-command--save-pos-or-erase ()
"Store a buffer position or erase the buffer.
See `shell-command-dont-erase-buffer'."
- (let ((sym shell-command-dont-erase-buffer)
- pos)
- (setq buffer-read-only nil)
- ;; Setting buffer-read-only to nil doesn't suffice
- ;; if some text has a non-nil read-only property,
- ;; which comint sometimes adds for prompts.
- (setq pos
- (cond ((eq sym 'save-point) (point))
- ((eq sym 'beg-last-out) (point-max))
- ((not sym)
- (let ((inhibit-read-only t))
- (erase-buffer) nil))))
+ (setq buffer-read-only nil)
+ ;; Setting buffer-read-only to nil doesn't suffice
+ ;; if some text has a non-nil read-only property,
+ ;; which comint sometimes adds for prompts.
+ (let ((pos (pcase shell-command-set-buffer-point
+ ('save-point (and shell-command-dont-erase-buffer (point)))
+ ('beg-last-out (if shell-command-dont-erase-buffer
+ (point-max)
+ (point-min)))
+ ((pred null) nil))))
+ (unless shell-command-dont-erase-buffer
+ (let ((inhibit-read-only t))
+ (erase-buffer)))
+ (goto-char (point-max))
(when pos
- (goto-char (point-max))
- (push (cons (current-buffer) pos)
- shell-command-saved-pos))))
+ (setq shell-command--saved-pos pos))))
(defun shell-command--set-point-after-cmd (&optional buffer)
"Set point in BUFFER after command complete.
BUFFER is the output buffer of the command; if nil, then defaults
to the current BUFFER.
-Set point to the `cdr' of the element in `shell-command-saved-pos'
-whose `car' is BUFFER."
- (when shell-command-dont-erase-buffer
- (let* ((sym shell-command-dont-erase-buffer)
- (buf (or buffer (current-buffer)))
- (pos (alist-get buf shell-command-saved-pos)))
- (setq shell-command-saved-pos
- (assq-delete-all buf shell-command-saved-pos))
+Set point to `shell-command--saved-pos'"
+ (when (and shell-command-set-buffer-point
+ ;; 'save-point is undefined when we erase the buffer.
+ (not (and (eq shell-command-set-buffer-point 'save-point)
+ (not shell-command-dont-erase-buffer))))
+ (let ((buf (or buffer (current-buffer))))
(when (buffer-live-p buf)
- (let ((win (car (get-buffer-window-list buf)))
- (pmax (with-current-buffer buf (point-max))))
- (unless (and pos (memq sym '(save-point beg-last-out)))
- (setq pos pmax))
- ;; Set point in the window displaying buf, if any; otherwise
- ;; display buf temporary in selected frame and set the point.
+ (set-buffer buf)
+ (let ((win (get-buffer-window nil t))
+ (pos (or shell-command--saved-pos (point-max))))
+ ;; Set point in the window displaying buf, if any.
+ ;; If buf is not displayed, use `goto-char', although this
+ ;; might not set point permanently.
(if win
(set-window-point win pos)
- (save-window-excursion
- (let ((win (display-buffer
- buf
- '(nil (inhibit-switch-frame . t)))))
- (set-window-point win pos)))))))))
+ (goto-char pos))
+ (setq shell-command--saved-pos nil))))))
(defun async-shell-command (command &optional output-buffer error-buffer)
"Execute string COMMAND asynchronously in background.
@@ -3562,7 +3563,7 @@ display-message-or-buffer
;; We have a sentinel to prevent insertion of a termination message
;; in the buffer itself, and to set the point in the buffer when
-;; `shell-command-dont-erase-buffer' is non-nil.
+;; `shell-command-set-buffer-point' is non-nil.
(defun shell-command-sentinel (process signal)
(when (memq (process-status process) '(exit signal))
(shell-command--set-point-after-cmd (process-buffer process))
@@ -3683,7 +3684,8 @@ shell-command-on-region
(or output-buffer "*Shell Command Output*"))))
(unwind-protect
(if (and (eq buffer (current-buffer))
- (or (not shell-command-dont-erase-buffer)
+ (or (and (not shell-command-dont-erase-buffer)
+ (not shell-command-set-buffer-point))
(and (not (eq buffer (get-buffer "*Shell Command Output*")))
(not (region-active-p)))))
;; If the input is the same buffer as the output,
--
2.9.3
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
In GNU Emacs 25.1.50.1
Repository revision: 83fbb3a6dd75e01a768cb6b3348b7c947711ee46
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [Emacs-diffs] master c711991: Allow not erase output buffer in shell commands
2016-09-20 15:10 [Emacs-diffs] master c711991: Allow not erase output buffer in shell commands Tino Calancha
@ 2016-09-20 16:22 ` Stefan Monnier
2016-09-20 16:32 ` Tino Calancha
2016-09-20 17:08 ` martin rudalics
0 siblings, 2 replies; 5+ messages in thread
From: Stefan Monnier @ 2016-09-20 16:22 UTC (permalink / raw)
To: Tino Calancha; +Cc: Emacs developers
> I guess, in cases where the buffer is not displayed, (goto-char pos)
> might not always work as `set-window-point': a posterior
> display of the buffer maybe doesn't show point at pos.
When a buffer is displayed in a window for the first time, the window's
point is initialized from the buffer's point, so it should work for
those cases. If the goto-char happens for a buffer that used to be
displayed in a window and later gets displayed again in that window, it
may be the case that we remember the old window-point somewhere and try
to return to that, indeed. Let's not worry about it for now.
Tho, maybe it would be a good idea to introduce a new function (not sure
how to call it: window-goto-char? set-buffer-window-point?) which would
work like set-window-point but takes a buffer as argument. After all,
it's a fairly common need, and if we ever want to fix the corner case
mentioned above, we could fix it there once and for all.
Stefan
PS: Haven't checked the new patch, sorry.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Emacs-diffs] master c711991: Allow not erase output buffer in shell commands
2016-09-20 16:22 ` Stefan Monnier
@ 2016-09-20 16:32 ` Tino Calancha
2016-09-20 17:08 ` martin rudalics
1 sibling, 0 replies; 5+ messages in thread
From: Tino Calancha @ 2016-09-20 16:32 UTC (permalink / raw)
To: Stefan Monnier; +Cc: Emacs developers, Tino Calancha
On Tue, 20 Sep 2016, Stefan Monnier wrote:
>> I guess, in cases where the buffer is not displayed, (goto-char pos)
>> might not always work as `set-window-point': a posterior
>> display of the buffer maybe doesn't show point at pos.
>
> When a buffer is displayed in a window for the first time, the window's
> point is initialized from the buffer's point, so it should work for
> those cases. If the goto-char happens for a buffer that used to be
> displayed in a window and later gets displayed again in that window, it
> may be the case that we remember the old window-point somewhere and try
> to return to that, indeed. Let's not worry about it for now.
Ok. thanks.
> Tho, maybe it would be a good idea to introduce a new function (not sure
> how to call it: window-goto-char? set-buffer-window-point?) which would
> work like set-window-point but takes a buffer as argument. After all,
> it's a fairly common need, and if we ever want to fix the corner case
> mentioned above, we could fix it there once and for all.
Thank you very much for the further explanation. Let's see what other
people here might comment about this new function proposal; people with
deeper understanding than me in that topic.
> PS: Haven't checked the new patch, sorry.
Please take your time. I took 1 month to answer this. There is no hurry.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Emacs-diffs] master c711991: Allow not erase output buffer in shell commands
2016-09-20 16:22 ` Stefan Monnier
2016-09-20 16:32 ` Tino Calancha
@ 2016-09-20 17:08 ` martin rudalics
1 sibling, 0 replies; 5+ messages in thread
From: martin rudalics @ 2016-09-20 17:08 UTC (permalink / raw)
To: Stefan Monnier, Tino Calancha; +Cc: Emacs developers
> If the goto-char happens for a buffer that used to be
> displayed in a window and later gets displayed again in that window, it
> may be the case that we remember the old window-point somewhere and try
> to return to that, indeed.
With ‘switch-to-buffer-preserve-window-point’ non-nil ‘switch-to-buffer’
goes there. The old position is available via the ‘window-prev-buffers’
alist.
martin
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2016-09-20 15:10 [Emacs-diffs] master c711991: Allow not erase output buffer in shell commands Tino Calancha
2016-09-20 16:22 ` Stefan Monnier
2016-09-20 16:32 ` Tino Calancha
2016-09-20 17:08 ` martin rudalics
[not found] <20160816094403.31386.69310@vcs.savannah.gnu.org>
[not found] ` <20160816094404.013EC220155@vcs.savannah.gnu.org>
2016-08-22 16:41 ` Stefan Monnier
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