* bug#60897: 29.0.60; vc-revert fails to revert buffer
@ 2023-01-18 1:09 Eric Gillespie
2023-01-18 17:29 ` Juri Linkov
0 siblings, 1 reply; 13+ messages in thread
From: Eric Gillespie @ 2023-01-18 1:09 UTC (permalink / raw)
To: 60897
1. git clone git://git.sv.gnu.org/emacs.git
2. emacs -Q emacs/BUGS
3. Make any change at all. Save it.
4. C-x v =
5. C-x v u
Step 4 switches to the diff buffer, as it always has (good).
If you switch back to the file buffer and C-x v u there, the file
is reverted and with it the buffer.
But we're staying in the diff buffer:
Expected behavior:
File and buffer both reverted.
Actual behavior:
File is reverted but buffer is NOT.
bisect results:
4803fba487d41f0817feab48b5095ef4b4940ff6 is the first bad commit
commit 4803fba487d41f0817feab48b5095ef4b4940ff6
Author: Juri Linkov <juri@linkov.net>
Date: Sun Aug 28 22:38:51 2022 +0300
'C-x v v' on a diff buffer commits it as a patch (bug#52349)
In GNU Emacs 29.0.60 (build 4, x86_64-pc-linux-gnu, X toolkit, cairo
version 1.16.0) of 2023-01-17 built on dogato
Repository revision: 56d69c2fc4782dc23bd79ddcbccfbae9b263ecac
Repository branch: emacs-29
Windowing system distributor 'The X.Org Foundation', version 11.0.12003000
System Description: openSUSE Leap 15.4
Configured using:
'configure -C --prefix=/home/epg/.local --disable-silent-rules
--without-libsystemd --without-xft --without-m17n-flt
--without-toolkit-scroll-bars --without-gpm --without-dbus
--without-gsettings --without-selinux --without-compress-install
--without-tree-sitter --with-x CC=gcc-11'
Configured features:
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^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-18 1:09 bug#60897: 29.0.60; vc-revert fails to revert buffer Eric Gillespie
@ 2023-01-18 17:29 ` Juri Linkov
2023-01-21 0:54 ` Eric Gillespie
2023-01-22 17:17 ` Juri Linkov
0 siblings, 2 replies; 13+ messages in thread
From: Juri Linkov @ 2023-01-18 17:29 UTC (permalink / raw)
To: Eric Gillespie; +Cc: 60897
> 2. emacs -Q emacs/BUGS
> 3. Make any change at all. Save it.
> 4. C-x v =
> 5. C-x v u
>
> Step 4 switches to the diff buffer, as it always has (good).
>
> If you switch back to the file buffer and C-x v u there, the file
> is reverted and with it the buffer.
>
> But we're staying in the diff buffer:
>
> Expected behavior:
> File and buffer both reverted.
>
> Actual behavior:
> File is reverted but buffer is NOT.
The behavior of C-x v u in the diff buffer was improved in emacs-29
to revert all files mentioned in the diff. In emacs-28 it reverted
only one file, but in emacs-29 when the diff buffer shows many files,
such as after C-x v D, all these files are reverted.
But as you noticed it doesn't refresh the buffer. This is because
vc-deduce-fileset in the diff buffer now returns relative file names,
not absolute as vc-resynch-buffer expects.
Expanding relative file names to absolute is not possible in
diff-vc-deduce-fileset, because then C-x v v will fail in
vc-default-checkin-patch that expects relative file names.
So I think the right place to do this is before trying to compare
relative names with (string= buffer-file-name file):
```
diff --git a/lisp/vc/vc-dispatcher.el b/lisp/vc/vc-dispatcher.el
index e1a3eff448d..3f9c39f2aff 100644
--- a/lisp/vc/vc-dispatcher.el
+++ b/lisp/vc/vc-dispatcher.el
@@ -643,6 +643,8 @@ vc-resynch-buffers-in-directory
(defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
"If FILE is currently visited, resynch its buffer."
+ (unless (file-name-absolute-p file)
+ (setq file (expand-file-name file (vc-root-dir))))
(if (string= buffer-file-name file)
(vc-resynch-window file keep noquery reset-vc-info)
(if (file-directory-p file)
```
^ permalink raw reply related [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-18 17:29 ` Juri Linkov
@ 2023-01-21 0:54 ` Eric Gillespie
2023-01-22 17:12 ` Juri Linkov
2023-01-22 17:17 ` Juri Linkov
1 sibling, 1 reply; 13+ messages in thread
From: Eric Gillespie @ 2023-01-21 0:54 UTC (permalink / raw)
To: Juri Linkov; +Cc: 60897
Juri Linkov <juri@linkov.net> writes:
> The behavior of C-x v u in the diff buffer was improved in emacs-29
> to revert all files mentioned in the diff. In emacs-28 it reverted
> only one file, but in emacs-29 when the diff buffer shows many files,
> such as after C-x v D, all these files are reverted.
Interesting, I hadn't noticed. Actually, I just tried reverting
two files from the diff buffer in 28.2 and it worked.
I've been regretting not finding the time to report the vc bug I
ran across in emacs 28, but then when
4803fba487d41f0817feab48b5095ef4b4940ff6 showed up and fixed what
I HAD noticed, I stopped worrying about it. I'm getting worried
again :)
Here's what I see:
1. edit two versioned files
2. mark them both in vc-dired
3. = to show the diff for the two marked files
4. C-x v u
In emacs 27 and 28, both files are reverted.
Now, do the same first 3 steps again but now:
4. C-x v v
5. write a log message
6. C-c C-c
In 23.1 and 27: commits, as it has since vc-dired was born in
23.1 (I have 23.1 handy and just confirmed I was not
misremembering).
In 28, you get this baffling prompt:
'Buffer *vc-diff* modified; save it? (yes or no)'
Neither option commits :)
It seemed to go back to normal with commit
4803fba487d41f0817feab48b5095ef4b4940ff6 on my daily driver
openSUSE laptop, but it's not working on my home FreeBSD box!
I'll look into that more...
I can't seem to make that fail a second time. But this was the
error message I got:
vc-do-command: Failed (status 128): git --no-pager apply --cached ../../../../tmp/git-patch11lenk
Which is a pretty strange path and which does not exist. If you
add one more ../ (five total) you will indeed reach /tmp but that
would be a strange way to reference it.
Thanks!
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-21 0:54 ` Eric Gillespie
@ 2023-01-22 17:12 ` Juri Linkov
0 siblings, 0 replies; 13+ messages in thread
From: Juri Linkov @ 2023-01-22 17:12 UTC (permalink / raw)
To: Eric Gillespie; +Cc: 60897
> Here's what I see:
>
> 1. edit two versioned files
> 2. mark them both in vc-dired
> 3. = to show the diff for the two marked files
> 4. C-x v u
>
> In emacs 27 and 28, both files are reverted.
In emacs 27 and 28 reverting was unpredictable
and depended on the parent buffer of *vc-diff*.
So for example, after typing = at the top of the vc-dir buffer
without marking files, C-x v u failed with such error:
(file-missing "Cannot open load file" "No such file or directory" "vc-nil")
> It seemed to go back to normal with commit
> 4803fba487d41f0817feab48b5095ef4b4940ff6 on my daily driver
> openSUSE laptop, but it's not working on my home FreeBSD box!
> I'll look into that more...
>
> I can't seem to make that fail a second time. But this was the
> error message I got:
>
> vc-do-command: Failed (status 128): git --no-pager apply --cached ../../../../tmp/git-patch11lenk
Did it pop up a buffer with an error output message?
> Which is a pretty strange path and which does not exist. If you
> add one more ../ (five total) you will indeed reach /tmp but that
> would be a strange way to reference it.
Hmm, the error comes from (vc-git-command nil 0 patch-file "apply" "--cached")
where patch-file is created by (make-nearby-temp-file "git-patch").
I guess make-nearby-temp-file makes such a relative name that looks strange.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-18 17:29 ` Juri Linkov
2023-01-21 0:54 ` Eric Gillespie
@ 2023-01-22 17:17 ` Juri Linkov
2023-01-22 19:50 ` Eli Zaretskii
1 sibling, 1 reply; 13+ messages in thread
From: Juri Linkov @ 2023-01-22 17:17 UTC (permalink / raw)
To: Eric Gillespie; +Cc: 60897
> But as you noticed it doesn't refresh the buffer. This is because
> vc-deduce-fileset in the diff buffer now returns relative file names,
> not absolute as vc-resynch-buffer expects.
>
> Expanding relative file names to absolute is not possible in
> diff-vc-deduce-fileset, because then C-x v v will fail in
> vc-default-checkin-patch that expects relative file names.
>
> So I think the right place to do this is before trying to compare
> relative names with (string= buffer-file-name file):
>
> diff --git a/lisp/vc/vc-dispatcher.el b/lisp/vc/vc-dispatcher.el
> @@ -643,6 +643,8 @@ vc-resynch-buffers-in-directory
>
> (defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
> "If FILE is currently visited, resynch its buffer."
> + (unless (file-name-absolute-p file)
> + (setq file (expand-file-name file (vc-root-dir))))
> (if (string= buffer-file-name file)
> (vc-resynch-window file keep noquery reset-vc-info)
> (if (file-directory-p file)
Eli, is this ok for the emacs-29 branch? I'm unsure because
vc-resynch-buffer is used in too many places, so this change
is not localized to vc-revert.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-22 17:17 ` Juri Linkov
@ 2023-01-22 19:50 ` Eli Zaretskii
2023-01-23 7:51 ` Juri Linkov
0 siblings, 1 reply; 13+ messages in thread
From: Eli Zaretskii @ 2023-01-22 19:50 UTC (permalink / raw)
To: Juri Linkov; +Cc: 60897, epg
> Cc: 60897@debbugs.gnu.org
> From: Juri Linkov <juri@linkov.net>
> Date: Sun, 22 Jan 2023 19:17:21 +0200
>
> > But as you noticed it doesn't refresh the buffer. This is because
> > vc-deduce-fileset in the diff buffer now returns relative file names,
> > not absolute as vc-resynch-buffer expects.
> >
> > Expanding relative file names to absolute is not possible in
> > diff-vc-deduce-fileset, because then C-x v v will fail in
> > vc-default-checkin-patch that expects relative file names.
> >
> > So I think the right place to do this is before trying to compare
> > relative names with (string= buffer-file-name file):
> >
> > diff --git a/lisp/vc/vc-dispatcher.el b/lisp/vc/vc-dispatcher.el
> > @@ -643,6 +643,8 @@ vc-resynch-buffers-in-directory
> >
> > (defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
> > "If FILE is currently visited, resynch its buffer."
> > + (unless (file-name-absolute-p file)
> > + (setq file (expand-file-name file (vc-root-dir))))
> > (if (string= buffer-file-name file)
> > (vc-resynch-window file keep noquery reset-vc-info)
> > (if (file-directory-p file)
>
> Eli, is this ok for the emacs-29 branch? I'm unsure because
> vc-resynch-buffer is used in too many places, so this change
> is not localized to vc-revert.
You could use the expanded file name only for the purposes of the
string= call, no? Then the effect of this change would be very local
and thus safer.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-22 19:50 ` Eli Zaretskii
@ 2023-01-23 7:51 ` Juri Linkov
2023-01-23 13:24 ` Eli Zaretskii
0 siblings, 1 reply; 13+ messages in thread
From: Juri Linkov @ 2023-01-23 7:51 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 60897, epg
>> > (defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
>> > "If FILE is currently visited, resynch its buffer."
>> > + (unless (file-name-absolute-p file)
>> > + (setq file (expand-file-name file (vc-root-dir))))
>> > (if (string= buffer-file-name file)
>> > (vc-resynch-window file keep noquery reset-vc-info)
>> > (if (file-directory-p file)
>>
>> Eli, is this ok for the emacs-29 branch? I'm unsure because
>> vc-resynch-buffer is used in too many places, so this change
>> is not localized to vc-revert.
>
> You could use the expanded file name only for the purposes of the
> string= call, no? Then the effect of this change would be very local
> and thus safer.
There is another string= call that fails inside vc-resynch-window
called from vc-resynch-buffer.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-23 7:51 ` Juri Linkov
@ 2023-01-23 13:24 ` Eli Zaretskii
2023-01-24 17:46 ` Juri Linkov
0 siblings, 1 reply; 13+ messages in thread
From: Eli Zaretskii @ 2023-01-23 13:24 UTC (permalink / raw)
To: Juri Linkov; +Cc: 60897, epg
> From: Juri Linkov <juri@linkov.net>
> Cc: epg@pretzelnet.org, 60897@debbugs.gnu.org
> Date: Mon, 23 Jan 2023 09:51:30 +0200
>
> >> > (defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
> >> > "If FILE is currently visited, resynch its buffer."
> >> > + (unless (file-name-absolute-p file)
> >> > + (setq file (expand-file-name file (vc-root-dir))))
> >> > (if (string= buffer-file-name file)
> >> > (vc-resynch-window file keep noquery reset-vc-info)
> >> > (if (file-directory-p file)
> >>
> >> Eli, is this ok for the emacs-29 branch? I'm unsure because
> >> vc-resynch-buffer is used in too many places, so this change
> >> is not localized to vc-revert.
> >
> > You could use the expanded file name only for the purposes of the
> > string= call, no? Then the effect of this change would be very local
> > and thus safer.
>
> There is another string= call that fails inside vc-resynch-window
> called from vc-resynch-buffer.
How about replacing string= in these two cases with something smarter,
which would expand-file-name? Comparing file names as simple strings
is wrought with trouble anyway.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-23 13:24 ` Eli Zaretskii
@ 2023-01-24 17:46 ` Juri Linkov
2023-01-24 18:06 ` Eli Zaretskii
0 siblings, 1 reply; 13+ messages in thread
From: Juri Linkov @ 2023-01-24 17:46 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 60897, epg
>> >> > (defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
>> >> > "If FILE is currently visited, resynch its buffer."
>> >> > + (unless (file-name-absolute-p file)
>> >> > + (setq file (expand-file-name file (vc-root-dir))))
>> >> > (if (string= buffer-file-name file)
>> >> > (vc-resynch-window file keep noquery reset-vc-info)
>> >> > (if (file-directory-p file)
>>
>> There is another string= call that fails inside vc-resynch-window
>> called from vc-resynch-buffer.
>
> How about replacing string= in these two cases with something smarter,
> which would expand-file-name? Comparing file names as simple strings
> is wrought with trouble anyway.
This works as well:
diff --git a/lisp/vc/vc-dispatcher.el b/lisp/vc/vc-dispatcher.el
index e1a3eff448d..8a0cdef4726 100644
--- a/lisp/vc/vc-dispatcher.el
+++ b/lisp/vc/vc-dispatcher.el
@@ -608,7 +608,7 @@ vc-resynch-window
difference between the buffer and the file is due to
modifications by the dispatcher client code, rather than user
editing!"
- (and (string= buffer-file-name file)
+ (and (string-prefix-p file buffer-file-name)
(if keep
(when (file-exists-p file)
(when reset-vc-info
@@ -643,7 +643,7 @@ vc-resynch-buffers-in-directory
(defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
"If FILE is currently visited, resynch its buffer."
- (if (string= buffer-file-name file)
+ (if (string-prefix-p file buffer-file-name)
(vc-resynch-window file keep noquery reset-vc-info)
(if (file-directory-p file)
(vc-resynch-buffers-in-directory file keep noquery reset-vc-info)
^ permalink raw reply related [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-24 17:46 ` Juri Linkov
@ 2023-01-24 18:06 ` Eli Zaretskii
2023-01-24 18:18 ` Juri Linkov
0 siblings, 1 reply; 13+ messages in thread
From: Eli Zaretskii @ 2023-01-24 18:06 UTC (permalink / raw)
To: Juri Linkov; +Cc: 60897, epg
> From: Juri Linkov <juri@linkov.net>
> Cc: epg@pretzelnet.org, 60897@debbugs.gnu.org
> Date: Tue, 24 Jan 2023 19:46:51 +0200
>
> > How about replacing string= in these two cases with something smarter,
> > which would expand-file-name? Comparing file names as simple strings
> > is wrought with trouble anyway.
>
> This works as well:
>
> diff --git a/lisp/vc/vc-dispatcher.el b/lisp/vc/vc-dispatcher.el
> index e1a3eff448d..8a0cdef4726 100644
> --- a/lisp/vc/vc-dispatcher.el
> +++ b/lisp/vc/vc-dispatcher.el
> @@ -608,7 +608,7 @@ vc-resynch-window
> difference between the buffer and the file is due to
> modifications by the dispatcher client code, rather than user
> editing!"
> - (and (string= buffer-file-name file)
> + (and (string-prefix-p file buffer-file-name)
> (if keep
> (when (file-exists-p file)
> (when reset-vc-info
> @@ -643,7 +643,7 @@ vc-resynch-buffers-in-directory
>
> (defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
> "If FILE is currently visited, resynch its buffer."
> - (if (string= buffer-file-name file)
> + (if (string-prefix-p file buffer-file-name)
> (vc-resynch-window file keep noquery reset-vc-info)
> (if (file-directory-p file)
> (vc-resynch-buffers-in-directory file keep noquery reset-vc-info)
I'm confused: I though the problem was that FILE was some relative
form of buffer-file-name, which is why you wanted to run it through
expand-file-name, to make it absolute. But if this is the case,
i.e. you have file = "foo" and buffer-file-name = /path/to/foo, then
string-prefix-p will not do the job, right? And even if it did, you
could have false positives.
Maybe I just don't understand what this if clause is trying to test?
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-24 18:06 ` Eli Zaretskii
@ 2023-01-24 18:18 ` Juri Linkov
2023-01-24 18:36 ` Eli Zaretskii
0 siblings, 1 reply; 13+ messages in thread
From: Juri Linkov @ 2023-01-24 18:18 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 60897, epg
>> (defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
>> "If FILE is currently visited, resynch its buffer."
>> - (if (string= buffer-file-name file)
>> + (if (string-prefix-p file buffer-file-name)
>> (vc-resynch-window file keep noquery reset-vc-info)
>> (if (file-directory-p file)
>> (vc-resynch-buffers-in-directory file keep noquery reset-vc-info)
>
> I'm confused: I though the problem was that FILE was some relative
> form of buffer-file-name, which is why you wanted to run it through
> expand-file-name, to make it absolute. But if this is the case,
> i.e. you have file = "foo" and buffer-file-name = /path/to/foo, then
> string-prefix-p will not do the job, right? And even if it did, you
> could have false positives.
>
> Maybe I just don't understand what this if clause is trying to test?
I tried to avoid expand-file-name, but maybe it's unavoidable.
In this case I can't find a solution simpler than this:
diff --git a/lisp/vc/vc-dispatcher.el b/lisp/vc/vc-dispatcher.el
index e1a3eff448d..fd5f655a0f6 100644
--- a/lisp/vc/vc-dispatcher.el
+++ b/lisp/vc/vc-dispatcher.el
@@ -608,7 +608,10 @@ vc-resynch-window
difference between the buffer and the file is due to
modifications by the dispatcher client code, rather than user
editing!"
- (and (string= buffer-file-name file)
+ (and (string= buffer-file-name
+ (if (file-name-absolute-p file)
+ file
+ (expand-file-name file (vc-root-dir))))
(if keep
(when (file-exists-p file)
(when reset-vc-info
@@ -643,7 +646,10 @@ vc-resynch-buffers-in-directory
(defun vc-resynch-buffer (file &optional keep noquery reset-vc-info)
"If FILE is currently visited, resynch its buffer."
- (if (string= buffer-file-name file)
+ (if (string= buffer-file-name
+ (if (file-name-absolute-p file)
+ file
+ (expand-file-name file (vc-root-dir))))
(vc-resynch-window file keep noquery reset-vc-info)
(if (file-directory-p file)
(vc-resynch-buffers-in-directory file keep noquery reset-vc-info)
^ permalink raw reply related [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-24 18:18 ` Juri Linkov
@ 2023-01-24 18:36 ` Eli Zaretskii
2023-01-24 18:49 ` Juri Linkov
0 siblings, 1 reply; 13+ messages in thread
From: Eli Zaretskii @ 2023-01-24 18:36 UTC (permalink / raw)
To: Juri Linkov; +Cc: 60897, epg
> From: Juri Linkov <juri@linkov.net>
> Cc: epg@pretzelnet.org, 60897@debbugs.gnu.org
> Date: Tue, 24 Jan 2023 20:18:32 +0200
>
> I tried to avoid expand-file-name, but maybe it's unavoidable.
> In this case I can't find a solution simpler than this:
This is fine by me, thanks.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#60897: 29.0.60; vc-revert fails to revert buffer
2023-01-24 18:36 ` Eli Zaretskii
@ 2023-01-24 18:49 ` Juri Linkov
0 siblings, 0 replies; 13+ messages in thread
From: Juri Linkov @ 2023-01-24 18:49 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 60897, epg
close 60897 29.0.60
thanks
>> I tried to avoid expand-file-name, but maybe it's unavoidable.
>> In this case I can't find a solution simpler than this:
>
> This is fine by me, thanks.
Thus fixed in emacs-29 and closed.
^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2023-01-24 18:49 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-01-18 1:09 bug#60897: 29.0.60; vc-revert fails to revert buffer Eric Gillespie
2023-01-18 17:29 ` Juri Linkov
2023-01-21 0:54 ` Eric Gillespie
2023-01-22 17:12 ` Juri Linkov
2023-01-22 17:17 ` Juri Linkov
2023-01-22 19:50 ` Eli Zaretskii
2023-01-23 7:51 ` Juri Linkov
2023-01-23 13:24 ` Eli Zaretskii
2023-01-24 17:46 ` Juri Linkov
2023-01-24 18:06 ` Eli Zaretskii
2023-01-24 18:18 ` Juri Linkov
2023-01-24 18:36 ` Eli Zaretskii
2023-01-24 18:49 ` Juri Linkov
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