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Subject: bug#65864: [PATCH] Add option to save a buffer without running save hooks
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--=-=-=
Content-Type: text/plain

Tags: patch


Users can customize `before-save-hook' to add things like
`delete-trailing-whitespace' or `copyright-update'.  However, there are
cases where you want to save a buffer without running any save hooks
without changing your configuration and then changing it back.

I've attached a patch to make `save-buffer', when invoked with a
negative argument (C-u - C-x C-s), temporarily avoid running any save
hooks.


--=-=-=
Content-Type: text/patch
Content-Disposition: attachment;
 filename=0001-Add-option-to-save-a-buffer-without-running-save-hoo.patch

From 6e1f19403937c266acd3d858ecc6c9e0e6b48ade Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Mart=C3=ADn?= <mardani29@HIDDEN>
Date: Mon, 11 Sep 2023 11:55:00 +0200
Subject: [PATCH] Add option to save a buffer without running save hooks

* lisp/files.el (save-buffer): Set `ignore-save-hooks' when
`save-buffer' is run with a negative argument.
(basic-save-buffer): Do not run `before-save-hook' or
`after-save-hook' if `ignore-save-hooks' is set.
* doc/emacs/files.texi (Save Commands): Update the user manual.
* etc/NEWS: Advertise it.
---
 doc/emacs/files.texi |  5 ++++-
 etc/NEWS             |  5 +++++
 lisp/files.el        | 21 +++++++++++++--------
 3 files changed, 22 insertions(+), 9 deletions(-)

diff --git a/doc/emacs/files.texi b/doc/emacs/files.texi
index 7efb4516d15..c1acd1e80d4 100644
--- a/doc/emacs/files.texi
+++ b/doc/emacs/files.texi
@@ -457,7 +457,10 @@ Save Commands
 @end example
 
 With a prefix argument, @kbd{C-u C-x C-s}, Emacs also marks the buffer
-to be backed up when the next save is done.  @xref{Backup}.
+to be backed up when the next save is done.  @xref{Backup}.  With a
+negative argument, @kbd{C-u - C-x C-s}, Emacs doesn't run the hook
+@code{before-save-hook} before saving the buffer, and doesn't run the
+hook @code{after-save-hook} after saving the buffer.
 
 @kindex C-x s
 @findex save-some-buffers
diff --git a/etc/NEWS b/etc/NEWS
index 51e89fc96dd..772aa49bc95 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -221,6 +221,11 @@ whereas if the mouse pointer is in the left half of a glyph, point
 will be put in front the buffer position corresponding to that glyph.
 By default this is disabled.
 
++++
+** You can now avoid running save hooks when saving a buffer.
+If you save a buffer with a negative argument, C-u - C-x C-s, Emacs
+won't run the hooks 'before-save-hook' and 'after-save-hook'.
+
 ** Internationalization
 
 ---
diff --git a/lisp/files.el b/lisp/files.el
index b67482a2f74..6ee28f23daa 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -5618,8 +5618,10 @@ save-buffer
  to become a backup when the next save is done,
  and makes the previous version into a backup file.
 
-With a numeric prefix argument of 0, never make the previous version
-into a backup file.
+With a numeric prefix argument of 0, never make the previous
+version into a backup file.  With a numeric prefix argument of
+-1, do not run the hooks `before-save-hook' and
+`after-save-hook'.
 
 Note that the various variables that control backups, such
 as `version-control', `backup-enable-predicate', `vc-make-backup-files',
@@ -5649,7 +5651,8 @@ save-buffer
   (interactive "p")
   (let ((modp (buffer-modified-p))
 	(make-backup-files (or (and make-backup-files (not (eq arg 0)))
-			       (memq arg '(16 64)))))
+			       (memq arg '(16 64))))
+        (ignore-save-hooks (eq arg -1)))
     (and modp (memq arg '(16 64)) (setq buffer-backed-up nil))
     ;; We used to display the message below only for files > 50KB, but
     ;; then Rmail-mbox never displays it due to buffer swapping.  If
@@ -5660,7 +5663,7 @@ save-buffer
              (not noninteractive)
              (not save-silently))
 	(message "Saving file %s..." (buffer-file-name)))
-    (basic-save-buffer (called-interactively-p 'any))
+    (basic-save-buffer (called-interactively-p 'any) ignore-save-hooks)
     (and modp (memq arg '(4 64)) (setq buffer-backed-up nil))))
 
 (defun delete-auto-save-file-if-necessary (&optional force)
@@ -5720,7 +5723,7 @@ save-buffer-coding-system
 
 (put 'save-buffer-coding-system 'permanent-local t)
 
-(defun basic-save-buffer (&optional called-interactively)
+(defun basic-save-buffer (&optional called-interactively ignore-save-hooks)
   "Save the current buffer in its visited file, if it has been modified.
 
 The hooks `write-contents-functions', `local-write-file-hooks'
@@ -5769,8 +5772,9 @@ basic-save-buffer
 		     (goto-char (point-max))
 		     (insert ?\n))))
 	    ;; Don't let errors prevent saving the buffer.
-	    (with-demoted-errors "Before-save hook error: %S"
-	      (run-hooks 'before-save-hook))
+            (unless ignore-save-hooks
+	      (with-demoted-errors "Before-save hook error: %S"
+	        (run-hooks 'before-save-hook)))
             ;; Give `write-contents-functions' a chance to
             ;; short-circuit the whole process.
 	    (unless (run-hook-with-args-until-success 'write-contents-functions)
@@ -5834,7 +5838,8 @@ basic-save-buffer
             ;; If the auto-save file was recent before this command,
 	    ;; delete it now.
 	    (delete-auto-save-file-if-necessary recent-save))
-	  (run-hooks 'after-save-hook))
+	  (unless ignore-save-hooks
+            (run-hooks 'after-save-hook)))
       (or noninteractive
           (not called-interactively)
           (files--message "(No changes need to be saved)")))))
-- 
2.40.1


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To: Daniel =?UTF-8?Q?Mart=C3=ADn?= <mardani29@HIDDEN>
Subject: bug#65864: Acknowledgement ([PATCH] Add option to save a buffer
 without running save hooks)
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Subject: bug#65864: [PATCH] Add option to save a buffer without running save hooks
Resent-From: Eli Zaretskii <eliz@HIDDEN>
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Date: Mon, 11 Sep 2023 15:45:39 +0300
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> Date: Mon, 11 Sep 2023 12:24:40 +0200
> From:  Daniel Martín via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN>
> 
> Users can customize `before-save-hook' to add things like
> `delete-trailing-whitespace' or `copyright-update'.  However, there are
> cases where you want to save a buffer without running any save hooks
> without changing your configuration and then changing it back.
> 
> I've attached a patch to make `save-buffer', when invoked with a
> negative argument (C-u - C-x C-s), temporarily avoid running any save
> hooks.

Should we perhaps consider a more general approach: run a command
while disabling the hooks it calls?  It sounds strange to me to single
out just this one command.

I'm interested in hearing Stefan's opinions on this (as well as those
of anyone else who wants to speak up).

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#65864: [PATCH] Add option to save a buffer without running save hooks
Resent-From: Stefan Monnier <monnier@HIDDEN>
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 <83h6o0ri8c.fsf@HIDDEN>
Date: Mon, 11 Sep 2023 18:28:59 -0400
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>> Users can customize `before-save-hook' to add things like
>> `delete-trailing-whitespace' or `copyright-update'.  However, there are
>> cases where you want to save a buffer without running any save hooks
>> without changing your configuration and then changing it back.

Do you have concrete examples, to helps us assess what's really at stake
here?  Maybe there are other ways to look at the problem :-)

"without running any save hooks" at all really?  Like without running
`write-contents-functions`, nor `write-file-functions`, nor
`write-region-annotat-functions`, nor `make-backup-file-name-function`, ...?
How 'bout the file-name-handlers, then?

Maybe `write-region` would be a better starting point than `buffer-save`?

>> I've attached a patch to make `save-buffer', when invoked with a
>> negative argument (C-u - C-x C-s), temporarily avoid running any save
>> hooks.
>
> Should we perhaps consider a more general approach: run a command
> while disabling the hooks it calls?  It sounds strange to me to single
> out just this one command.

Hmm... sounds iffy.  I generally prefer ordering a plain burger than
ordering a "cheeseburger but hold the cheese" :-)

IOW, provide *another* function which performs the core operation.
[ And we usually do that.  ]


        Stefan

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References: <m1y1hdm2hj.fsf.ref@HIDDEN> <m1y1hdm2hj.fsf@HIDDEN>
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Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs@HIDDEN> writes:

>>> Users can customize `before-save-hook' to add things like
>>> `delete-trailing-whitespace' or `copyright-update'.  However, there are
>>> cases where you want to save a buffer without running any save hooks
>>> without changing your configuration and then changing it back.
>
> Do you have concrete examples, to helps us assess what's really at stake
> here?  Maybe there are other ways to look at the problem :-)
>

For example, I have `delete-trailing-whitespace' in my
`before-save-hook', but for a particular buffer I wanted to save it
without removing the trailing whitespace, because trailing whitespace
was syntactically meaningful in that case (the buffer contained some
Markdown-like source code).

I searched the Internet for some solutions and what I ended up doing is
C-x C-q (to make the buffer read-only), C-x C-s, and C-x C-q to make the
buffer writable again (from
https://stackoverflow.com/questions/14913398/in-emacs-how-do-i-save-without-running-save-hooks).
It felt a bit like a "hack".

Message sent to bug-gnu-emacs@HIDDEN:

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In-Reply-To: <jwv8r9cmjwq.fsf-monnier+emacs@HIDDEN> (Stefan Monnier via's
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References: <m1y1hdm2hj.fsf.ref@HIDDEN> <m1y1hdm2hj.fsf@HIDDEN>
 <83h6o0ri8c.fsf@HIDDEN> <jwv8r9cmjwq.fsf-monnier+emacs@HIDDEN>
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Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs@HIDDEN> writes:

>>> Users can customize `before-save-hook' to add things like
>>> `delete-trailing-whitespace' or `copyright-update'.  However, there are
>>> cases where you want to save a buffer without running any save hooks
>>> without changing your configuration and then changing it back.
>
> Do you have concrete examples, to helps us assess what's really at stake
> here?  Maybe there are other ways to look at the problem :-)
>

For example, I have `delete-trailing-whitespace' in my
`before-save-hook', but for a particular buffer I wanted to save it
without removing the trailing whitespace, because trailing whitespace
was syntactically meaningful in that case (the buffer contained some
Markdown-like source code).

I searched the Internet for some solutions and what I ended up doing is
C-x C-q (to make the buffer read-only), C-x C-s, and C-x C-q to make the
buffer writable again (from
https://stackoverflow.com/questions/14913398/in-emacs-how-do-i-save-without-running-save-hooks).
It felt a bit like a "hack".

Message sent to bug-gnu-emacs@HIDDEN:

X-Loop: help-debbugs@HIDDEN
Subject: bug#65864: [PATCH] Add option to save a buffer without running save hooks
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> For example, I have `delete-trailing-whitespace' in my
> `before-save-hook', but for a particular buffer I wanted to save it
> without removing the trailing whitespace, because trailing whitespace
> was syntactically meaningful in that case (the buffer contained some
> Markdown-like source code).

So you needed it for use by a human rather than for use by ELisp code?

> I searched the Internet for some solutions and what I ended up doing is
> C-x C-q (to make the buffer read-only), C-x C-s, and C-x C-q to make the
> buffer writable again (from
> https://stackoverflow.com/questions/14913398/in-emacs-how-do-i-save-without-running-save-hooks).
> It felt a bit like a "hack".

It's a hack, indeed, and it could fail if the hook function was careful to
let-bind `inhibit-read-only`.

Personally I think I would have used `C-x h M-x write-region RET` (or
fixed my config since clearly having this hook function active for this
file is wrong).


        Stefan

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> For example, I have `delete-trailing-whitespace' in my
> `before-save-hook', but for a particular buffer I wanted to save it
> without removing the trailing whitespace, because trailing whitespace
> was syntactically meaningful in that case (the buffer contained some
> Markdown-like source code).
>
> I searched the Internet for some solutions and what I ended up doing is
> C-x C-q (to make the buffer read-only), C-x C-s, and C-x C-q to make the
> buffer writable again (from
> https://stackoverflow.com/questions/14913398/in-emacs-how-do-i-save-without-running-save-hooks).
> It felt a bit like a "hack".

I confirm that 'C-u - C-x C-s' will save me from trouble that I have with

  (add-hook 'before-save-hook 'time-stamp nil t)

because often I don't need to update the timestamp for a small fix.
It takes too much time to revisit the file with M-x find-file-literally,
then manually restore the previous timestamp (to not commit unnecessary change),
and save the file again.  Your patch will help substantially, thanks for this.

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> For example, I have `delete-trailing-whitespace' in my
> `before-save-hook', but for a particular buffer I wanted to save it
> without removing the trailing whitespace, because trailing whitespace
> was syntactically meaningful in that case (the buffer contained some
> Markdown-like source code).
>
> I searched the Internet for some solutions and what I ended up doing is
> C-x C-q (to make the buffer read-only), C-x C-s, and C-x C-q to make the
> buffer writable again (from
> https://stackoverflow.com/questions/14913398/in-emacs-how-do-i-save-without-running-save-hooks).
> It felt a bit like a "hack".

I confirm that 'C-u - C-x C-s' will save me from trouble that I have with

  (add-hook 'before-save-hook 'time-stamp nil t)

because often I don't need to update the timestamp for a small fix.
It takes too much time to revisit the file with M-x find-file-literally,
then manually restore the previous timestamp (to not commit unnecessary change),
and save the file again.  Your patch will help substantially, thanks for this.

Message sent to bug-gnu-emacs@HIDDEN:

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Juri Linkov <juri@HIDDEN> writes:

> I confirm that 'C-u - C-x C-s' will save me from trouble that I have with
>
>   (add-hook 'before-save-hook 'time-stamp nil t)
>
> because often I don't need to update the timestamp for a small fix.
> It takes too much time to revisit the file with M-x find-file-literally,
> then manually restore the previous timestamp (to not commit unnecessary change),
> and save the file again.  Your patch will help substantially, thanks for this.

Same here, FWIW.

Message received at control <at> debbugs.gnu.org:

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severity 65864 wishlist
quit

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Stefan Kangas <stefankangas@HIDDEN> writes:

> Juri Linkov <juri@HIDDEN> writes:
>
>> I confirm that 'C-u - C-x C-s' will save me from trouble that I have with
>>
>>   (add-hook 'before-save-hook 'time-stamp nil t)
>>
>> because often I don't need to update the timestamp for a small fix.
>> It takes too much time to revisit the file with M-x find-file-literally,
>> then manually restore the previous timestamp (to not commit unnecessary change),
>> and save the file again.  Your patch will help substantially, thanks for this.
>
> Same here, FWIW.

Does anyone object to installing this patch?

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> From: Stefan Kangas <stefankangas@HIDDEN>
> Date: Tue, 11 Feb 2025 20:25:30 -0800
> Cc: 65864 <at> debbugs.gnu.org, eliz@HIDDEN, monnier@HIDDEN, 
> 	mardani29@HIDDEN
> 
> Stefan Kangas <stefankangas@HIDDEN> writes:
> 
> > Juri Linkov <juri@HIDDEN> writes:
> >
> >> I confirm that 'C-u - C-x C-s' will save me from trouble that I have with
> >>
> >>   (add-hook 'before-save-hook 'time-stamp nil t)
> >>
> >> because often I don't need to update the timestamp for a small fix.
> >> It takes too much time to revisit the file with M-x find-file-literally,
> >> then manually restore the previous timestamp (to not commit unnecessary change),
> >> and save the file again.  Your patch will help substantially, thanks for this.
> >
> > Same here, FWIW.
> 
> Does anyone object to installing this patch?

I don't necessarily object, but how can we usefully document this
behavior? who are those users that know by heart the hooks run by
save-buffer?  And without knowing that, how can a user decide whether
she does or doesn't want to use this feature: perhaps omitting some
hook disables behavior that is very important to the user?

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>> >> I confirm that 'C-u - C-x C-s' will save me from trouble that I have with
>> >>
>> >>   (add-hook 'before-save-hook 'time-stamp nil t)
>> >>
>> >> because often I don't need to update the timestamp for a small fix.
>> >> It takes too much time to revisit the file with M-x find-file-literally,
>> >> then manually restore the previous timestamp (to not commit unnecessary change),
>> >> and save the file again.  Your patch will help substantially, thanks for this.
>> >
>> > Same here, FWIW.
>> 
>> Does anyone object to installing this patch?
>
> I don't necessarily object, but how can we usefully document this
> behavior? who are those users that know by heart the hooks run by
> save-buffer?  And without knowing that, how can a user decide whether
> she does or doesn't want to use this feature: perhaps omitting some
> hook disables behavior that is very important to the user?

It does seem like a blunt way to affect `time-stamp`.

Maybe the time-stamp package should instead provide a prefix command
`time-stamp-inhibit` which makes the next call to `time-stamp`
do nothing.

Or a more hackish way would be for `time-stamp` to consult
`current-prefix-arg`, so as to disable the update of the time stamp when
you do `C-u - C-x C-s`.


        Stefan

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--000000000000b7df09062df2717e
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That might interfere with prefix args people have set up for their own
saves. How about a new time-stamp-inhibit defvar which people can bind to t
in their own save-buffer wrapper they bind to C-x C-s?

On Wed, Feb 12, 2025 at 9:02=E2=80=AFAM Stefan Monnier via Bug reports for =
GNU
Emacs, the Swiss army knife of text editors <bug-gnu-emacs@HIDDEN> wrote:

> >> >> I confirm that 'C-u - C-x C-s' will save me from trouble that I hav=
e
> with
> >> >>
> >> >>   (add-hook 'before-save-hook 'time-stamp nil t)
> >> >>
> >> >> because often I don't need to update the timestamp for a small fix.
> >> >> It takes too much time to revisit the file with M-x
> find-file-literally,
> >> >> then manually restore the previous timestamp (to not commit
> unnecessary change),
> >> >> and save the file again.  Your patch will help substantially, thank=
s
> for this.
> >> >
> >> > Same here, FWIW.
> >>
> >> Does anyone object to installing this patch?
> >
> > I don't necessarily object, but how can we usefully document this
> > behavior? who are those users that know by heart the hooks run by
> > save-buffer?  And without knowing that, how can a user decide whether
> > she does or doesn't want to use this feature: perhaps omitting some
> > hook disables behavior that is very important to the user?
>
> It does seem like a blunt way to affect `time-stamp`.
>
> Maybe the time-stamp package should instead provide a prefix command
> `time-stamp-inhibit` which makes the next call to `time-stamp`
> do nothing.
>
> Or a more hackish way would be for `time-stamp` to consult
> `current-prefix-arg`, so as to disable the update of the time stamp when
> you do `C-u - C-x C-s`.
>
>
>         Stefan
>
>
>
>
>

--000000000000b7df09062df2717e
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:monospac=
e">That might interfere with prefix args people=C2=A0have set up for their =
own saves. How about a new time-stamp-inhibit defvar which people can bind =
to t in their own=C2=A0save-buffer wrapper they bind to C-x C-s?</div></div=
><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" clas=
s=3D"gmail_attr">On Wed, Feb 12, 2025 at 9:02=E2=80=AFAM Stefan Monnier via=
 Bug reports for GNU Emacs, the Swiss army knife of text editors &lt;<a hre=
f=3D"mailto:bug-gnu-emacs@HIDDEN">bug-gnu-emacs@HIDDEN</a>&gt; wrote:<br>=
</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;b=
order-left:1px solid rgb(204,204,204);padding-left:1ex">&gt;&gt; &gt;&gt; I=
 confirm that &#39;C-u - C-x C-s&#39; will save me from trouble that I have=
 with<br>
&gt;&gt; &gt;&gt;<br>
&gt;&gt; &gt;&gt;=C2=A0 =C2=A0(add-hook &#39;before-save-hook &#39;time-sta=
mp nil t)<br>
&gt;&gt; &gt;&gt;<br>
&gt;&gt; &gt;&gt; because often I don&#39;t need to update the timestamp fo=
r a small fix.<br>
&gt;&gt; &gt;&gt; It takes too much time to revisit the file with M-x find-=
file-literally,<br>
&gt;&gt; &gt;&gt; then manually restore the previous timestamp (to not comm=
it unnecessary change),<br>
&gt;&gt; &gt;&gt; and save the file again.=C2=A0 Your patch will help subst=
antially, thanks for this.<br>
&gt;&gt; &gt;<br>
&gt;&gt; &gt; Same here, FWIW.<br>
&gt;&gt; <br>
&gt;&gt; Does anyone object to installing this patch?<br>
&gt;<br>
&gt; I don&#39;t necessarily object, but how can we usefully document this<=
br>
&gt; behavior? who are those users that know by heart the hooks run by<br>
&gt; save-buffer?=C2=A0 And without knowing that, how can a user decide whe=
ther<br>
&gt; she does or doesn&#39;t want to use this feature: perhaps omitting som=
e<br>
&gt; hook disables behavior that is very important to the user?<br>
<br>
It does seem like a blunt way to affect `time-stamp`.<br>
<br>
Maybe the time-stamp package should instead provide a prefix command<br>
`time-stamp-inhibit` which makes the next call to `time-stamp`<br>
do nothing.<br>
<br>
Or a more hackish way would be for `time-stamp` to consult<br>
`current-prefix-arg`, so as to disable the update of the time stamp when<br=
>
you do `C-u - C-x C-s`.<br>
<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Stefan<br>
<br>
<br>
<br>
<br>
</blockquote></div>

--000000000000b7df09062df2717e--

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Stefan Monnier <monnier@HIDDEN> writes:

>> I don't necessarily object, but how can we usefully document this
>> behavior? who are those users that know by heart the hooks run by
>> save-buffer?  And without knowing that, how can a user decide whether
>> she does or doesn't want to use this feature: perhaps omitting some
>> hook disables behavior that is very important to the user?
>
> It does seem like a blunt way to affect `time-stamp`.

Yes, it does seem like a sharp tool.  OTOH, we have some of them in
Emacs already.  Maybe we could make disabled-command cover it, somehow?

> Maybe the time-stamp package should instead provide a prefix command
> `time-stamp-inhibit` which makes the next call to `time-stamp`
> do nothing.

My use case for disabling `before-save-hook` with a prefix argument is
that in `emacs-lisp-mode`, I have this `before-save-hook`:

    (aggressive-indent--process-changed-list-and-indent
     ws-butler-before-save time-stamp)

Sometimes, I would really like to disable all three when saving.
Now, I can of course disable the modes, run special commands for
time-stamp, and so on.  It just seems less convenient.

I have also seen variations on hooks like these recommended online:

    (delete-trailing-whitespace time-stamp
     my-recompile-el check-parens)

Where `my-recompile-el` is some function that would automatically
recompile the file.

In cases such as these, the prefix argument would mean "just save this
file now without doing any other special processing".

That said, if this functionality is not considered generally useful, I'm
of course happy to add it to my local hacks and move on.

> Or a more hackish way would be for `time-stamp` to consult
> `current-prefix-arg`, so as to disable the update of the time stamp when
> you do `C-u - C-x C-s`.

That could work, but yes hackish, and wouldn't it mean that we'd have to
potentially reproduce the hack in `ws-butler-mode`, `check-parens`,
`delete-trailing-whitespace`, and so on?

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> My use case for disabling `before-save-hook` with a prefix argument is
> that in `emacs-lisp-mode`, I have this `before-save-hook`:
>
>     (aggressive-indent--process-changed-list-and-indent
>      ws-butler-before-save time-stamp)
>
> Sometimes, I would really like to disable all three when saving.
> Now, I can of course disable the modes, run special commands for
> time-stamp, and so on.  It just seems less convenient.

Maybe a `grep before-save-hook Emacs (Non)GNU ELPA MELPA` would be
a good way to see how whether `before-save-hook` is used only for such
"optional" functionality, which would be a good argument in favor of the
patch (tho I'd then update the doc of `before-save-hook` to mention that
it's not guaranteed it's run, so it's meant for "nice to have but not
indispensable" processing).

Also, Daniel's patch does the same with `after-save-hook` so we'd need
to do the same analysis with that hook.

> That could work, but yes hackish, and wouldn't it mean that we'd have to
> potentially reproduce the hack in `ws-butler-mode`, `check-parens`,
> `delete-trailing-whitespace`, and so on?

Maybe.  Then again, if people have `time-stamp` and `check-parens` on
their hook and they use `C-u - C-x C-s` to "save without bumping
time-stamp", they might be disappointed if the parens happen to be
unbalanced.


        Stefan

Last modified: Wed, 12 Feb 2025 16:00:01 UTC

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