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* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
@ 2022-05-03 16:55 Jacob Faibussowitsch
  2022-05-05 11:16 ` Lars Ingebrigtsen
  2022-05-06  8:43 ` Michael Albinus
  0 siblings, 2 replies; 13+ messages in thread
From: Jacob Faibussowitsch @ 2022-05-03 16:55 UTC (permalink / raw)
  To: 55247

[-- Attachment #1: Type: text/plain, Size: 929 bytes --]

Hello,

Note: anything between angled brackets “< >” is not literal, but rather a description.

Problem:

Any time I edit and save a remote buffer over tramp, I get

```
<file name> changed on disk; really edit the buffer? (y, n, r or C-h)
```

The next time I try to edit the file. I know for a fact that the file has not changed, as I have compared copies of the file:

1. 
```
$ cp remote/file.c remote/file_tmp.c
```
2. Make a change in `file.c`, save, revert it, and save again (prompted each time with “buffer changed on disk”).
3. 
```
$ diff file.c file_tmp.c
```

And they are identical.

Reproduce:

1. 
```
$ emacs -Q /ssh:<ssh alias>:path/to/file
```
2. Change something
3. C-x C-s
4. Try to change something else
5.
```
<file name> changed on disk; really edit the buffer? (y, n, r or C-h)
```

Best regards,

Jacob Faibussowitsch
(Jacob Fai - booss - oh - vitch)

[-- Attachment #2: emacs_state.log --]
[-- Type: application/octet-stream, Size: 8394 bytes --]

In GNU Emacs 29.0.50 (build 7, aarch64-apple-darwin21.4.0)
 of 2022-05-03 built on Jacobs-MacBook-Pro.local
Repository revision: 41e946f46e23756b7c732efdf3c5152fa8241dde
Repository branch: master
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^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-03 16:55 bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save Jacob Faibussowitsch
@ 2022-05-05 11:16 ` Lars Ingebrigtsen
  2022-05-05 14:32   ` Manuel Giraud
  2022-05-06  8:43 ` Michael Albinus
  1 sibling, 1 reply; 13+ messages in thread
From: Lars Ingebrigtsen @ 2022-05-05 11:16 UTC (permalink / raw)
  To: Jacob Faibussowitsch; +Cc: 55247

Jacob Faibussowitsch <jacob.fai@gmail.com> writes:

> The next time I try to edit the file. I know for a fact that the file
> has not changed, as I have compared copies of the file:

[...]

> $ diff file.c file_tmp.c

Changing the timestamp may also trigger the "really edit the buffer"
message.  Have you checked that something isn't altering the timestamp
of the file on the remote system?

> $ emacs -Q /ssh:<ssh alias>:path/to/file
> ```
> 2. Change something
> 3. C-x C-s
> 4. Try to change something else
> 5.
> ```
> <file name> changed on disk; really edit the buffer? (y, n, r or C-h)

I'm unable to reproduce this problem in Emacs 29.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-05 11:16 ` Lars Ingebrigtsen
@ 2022-05-05 14:32   ` Manuel Giraud
  2022-05-05 14:42     ` Lars Ingebrigtsen
  0 siblings, 1 reply; 13+ messages in thread
From: Manuel Giraud @ 2022-05-05 14:32 UTC (permalink / raw)
  To: Lars Ingebrigtsen; +Cc: 55247, Michael Albinus, Jacob Faibussowitsch

Hi all,

I'm also affected by this rather annoying bug when editing a file over
TRAMP. FWIW, I've just bisected it to this patch 47fe7a5983.

Best regards,
-- 
Manuel Giraud





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-05 14:32   ` Manuel Giraud
@ 2022-05-05 14:42     ` Lars Ingebrigtsen
  2022-05-05 14:50       ` Jacob Faibussowitsch
  2022-05-05 15:05       ` Michael Albinus
  0 siblings, 2 replies; 13+ messages in thread
From: Lars Ingebrigtsen @ 2022-05-05 14:42 UTC (permalink / raw)
  To: Manuel Giraud; +Cc: 55247, Michael Albinus, Jacob Faibussowitsch

Manuel Giraud <manuel@ledu-giraud.fr> writes:

> I'm also affected by this rather annoying bug when editing a file over
> TRAMP. FWIW, I've just bisected it to this patch 47fe7a5983.

Sorry; I was testing with an Emacs that was a couple days old.  With the
current trunk, I can indeed reproduce the problem.  I'm also getting
further errors:

Debugger entered--Lisp error: (wrong-type-argument "number-or-marker-p nil")
  signal(wrong-type-argument ("number-or-marker-p nil"))
  tramp-error((tramp-file-name "ssh" nil nil "stories" nil "/tmp/foo" nil) wrong-type-argument "number-or-marker-p nil")
  tramp-signal-hook-function(wrong-type-argument (number-or-marker-p nil))
  tramp-sh-handle-write-region(nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil)
  apply(tramp-sh-handle-write-region (nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil))
  tramp-sh-file-name-handler(write-region nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil)
  apply(tramp-sh-file-name-handler write-region (nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil))
  tramp-file-name-handler(write-region nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil)
  write-region(nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo")
  basic-save-buffer-2()
  basic-save-buffer-1()
  basic-save-buffer(t)
  save-buffer(1)

This is on Debian/bookworm writing to a different Debian/bookworm
machine, if that makes a difference.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-05 14:42     ` Lars Ingebrigtsen
@ 2022-05-05 14:50       ` Jacob Faibussowitsch
  2022-05-05 15:05       ` Michael Albinus
  1 sibling, 0 replies; 13+ messages in thread
From: Jacob Faibussowitsch @ 2022-05-05 14:50 UTC (permalink / raw)
  To: Lars Ingebrigtsen; +Cc: 55247, Michael Albinus, Manuel Giraud

> I'm also getting further errors:

Yes I was just about to mail with the same problems :). FWIW here are the log messages I get

```
Tramp: Checking ‘vc-registered’ for /ssh:<ssh login>:/home/jacob/tmp.c...done
Tramp: Encoding local file ‘/var/folders/9w/7dlszmmn6q1gd5yf3r9n79bc0000gn/T/tramp.luvXdR.c’ using ‘base64-encode-region’...done
Tramp: Decoding remote file ‘/ssh:<ssh login>:/home/jacob/tmp.c’ using ‘base64 -d -i >%s’...done
Wrong type argument: "Wrong type argument", "number-or-marker-p nil"
tramp-error: Wrong type argument: "number-or-marker-p nil”
```

Perhaps related but I also get this rather strange message on C-g:

```
Quit: “"
```

I have not been able to reliably reproduce it unfortunately, but I believe it occurs if you hit C-g after saving the remote buffer.

>> I'm also affected by this rather annoying bug when editing a file over
>> TRAMP. FWIW, I've just bisected it to this patch 47fe7a5983.


Glad someone else took the time to bisect, I was not looking forward to it...

Best regards,

Jacob Faibussowitsch
(Jacob Fai - booss - oh - vitch)

> On May 5, 2022, at 09:42, Lars Ingebrigtsen <larsi@gnus.org> wrote:
> 
> Manuel Giraud <manuel@ledu-giraud.fr> writes:
> 
>> I'm also affected by this rather annoying bug when editing a file over
>> TRAMP. FWIW, I've just bisected it to this patch 47fe7a5983.
> 
> Sorry; I was testing with an Emacs that was a couple days old.  With the
> current trunk, I can indeed reproduce the problem.  I'm also getting
> further errors:
> 
> Debugger entered--Lisp error: (wrong-type-argument "number-or-marker-p nil")
>  signal(wrong-type-argument ("number-or-marker-p nil"))
>  tramp-error((tramp-file-name "ssh" nil nil "stories" nil "/tmp/foo" nil) wrong-type-argument "number-or-marker-p nil")
>  tramp-signal-hook-function(wrong-type-argument (number-or-marker-p nil))
>  tramp-sh-handle-write-region(nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil)
>  apply(tramp-sh-handle-write-region (nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil))
>  tramp-sh-file-name-handler(write-region nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil)
>  apply(tramp-sh-file-name-handler write-region (nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil))
>  tramp-file-name-handler(write-region nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo" nil)
>  write-region(nil nil "/ssh:stories:/tmp/foo" nil t "/ssh:stories:/tmp/foo")
>  basic-save-buffer-2()
>  basic-save-buffer-1()
>  basic-save-buffer(t)
>  save-buffer(1)
> 
> This is on Debian/bookworm writing to a different Debian/bookworm
> machine, if that makes a difference.
> 
> -- 
> (domestic pets only, the antidote for overdose, milk.)
>   bloggy blog: http://lars.ingebrigtsen.no






^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-05 14:42     ` Lars Ingebrigtsen
  2022-05-05 14:50       ` Jacob Faibussowitsch
@ 2022-05-05 15:05       ` Michael Albinus
  1 sibling, 0 replies; 13+ messages in thread
From: Michael Albinus @ 2022-05-05 15:05 UTC (permalink / raw)
  To: Lars Ingebrigtsen; +Cc: 55247, Manuel Giraud, Jacob Faibussowitsch

Lars Ingebrigtsen <larsi@gnus.org> writes:

Hi,

> Manuel Giraud <manuel@ledu-giraud.fr> writes:
>
>> I'm also affected by this rather annoying bug when editing a file over
>> TRAMP. FWIW, I've just bisected it to this patch 47fe7a5983.
>
> Sorry; I was testing with an Emacs that was a couple days old.  With the
> current trunk, I can indeed reproduce the problem.  I'm also getting
> further errors:

I've seen this report, and it is already on my TODO. Just a matter of
available time to work on this.

Shall be fixed latest tomorrow, I hope.

Best regards, Michael.





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-03 16:55 bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save Jacob Faibussowitsch
  2022-05-05 11:16 ` Lars Ingebrigtsen
@ 2022-05-06  8:43 ` Michael Albinus
  2022-05-06  9:39   ` Manuel Giraud
  1 sibling, 1 reply; 13+ messages in thread
From: Michael Albinus @ 2022-05-06  8:43 UTC (permalink / raw)
  To: Jacob Faibussowitsch; +Cc: 55247, Manuel Giraud

Jacob Faibussowitsch <jacob.fai@gmail.com> writes:

> Hello,

Hi,

> Reproduce:
>
> 1.
> ```
> $ emacs -Q /ssh:<ssh alias>:path/to/file
> ```
> 2. Change something
> 3. C-x C-s
> 4. Try to change something else
> 5.
> ```
> <file name> changed on disk; really edit the buffer? (y, n, r or C-h)
> ```

Should be fixed now in master, there was a race condition in clearing
the cache.

Since this is fixed in a macro, all files this macro is used must be
recompiled. So please run

rm lisp/net/tramp*.elc; make

> Best regards,
>
> Jacob Faibussowitsch

Best regards, Michael.





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-06  8:43 ` Michael Albinus
@ 2022-05-06  9:39   ` Manuel Giraud
  2022-05-06  9:53     ` Michael Albinus
  2022-05-06 10:08     ` Lars Ingebrigtsen
  0 siblings, 2 replies; 13+ messages in thread
From: Manuel Giraud @ 2022-05-06  9:39 UTC (permalink / raw)
  To: Michael Albinus; +Cc: 55247, Jacob Faibussowitsch

Michael Albinus <michael.albinus@gmx.de> writes:

[...]

> Should be fixed now in master, there was a race condition in clearing
> the cache.
>
> Since this is fixed in a macro, all files this macro is used must be
> recompiled. So please run
>
> rm lisp/net/tramp*.elc; make

Hi Michael,

I've just rebuild emacs on current HEAD (with your fix) but I'm still
facing this issue. Would you need tramp trace for this?
-- 
Manuel Giraud





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-06  9:39   ` Manuel Giraud
@ 2022-05-06  9:53     ` Michael Albinus
  2022-05-06 10:08     ` Lars Ingebrigtsen
  1 sibling, 0 replies; 13+ messages in thread
From: Michael Albinus @ 2022-05-06  9:53 UTC (permalink / raw)
  To: Manuel Giraud; +Cc: 55247, Jacob Faibussowitsch

Manuel Giraud <manuel@ledu-giraud.fr> writes:

> Hi Michael,

Hi Manuel,

> I've just rebuild emacs on current HEAD (with your fix) but I'm still
> facing this issue. Would you need tramp trace for this?

Yes, pls do. Running "emacs -Q --eval '(setq tramp-verbose 10)'".
I need the cached properties.

Best regards, Michael.





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-06  9:39   ` Manuel Giraud
  2022-05-06  9:53     ` Michael Albinus
@ 2022-05-06 10:08     ` Lars Ingebrigtsen
  2022-05-06 11:17       ` Manuel Giraud
  1 sibling, 1 reply; 13+ messages in thread
From: Lars Ingebrigtsen @ 2022-05-06 10:08 UTC (permalink / raw)
  To: Manuel Giraud; +Cc: 55247, Michael Albinus, Jacob Faibussowitsch

Manuel Giraud <manuel@ledu-giraud.fr> writes:

>> rm lisp/net/tramp*.elc; make
>
> Hi Michael,
>
> I've just rebuild emacs on current HEAD (with your fix) but I'm still
> facing this issue. Would you need tramp trace for this?

Is this after deleting the .elc files?  (Or a "make bootstrap" to make
sure.)

I'm not able to reproduce the problem any longer after Michael's fixes.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-06 10:08     ` Lars Ingebrigtsen
@ 2022-05-06 11:17       ` Manuel Giraud
  2022-05-06 11:22         ` Michael Albinus
  0 siblings, 1 reply; 13+ messages in thread
From: Manuel Giraud @ 2022-05-06 11:17 UTC (permalink / raw)
  To: Lars Ingebrigtsen; +Cc: 55247, Michael Albinus, Jacob Faibussowitsch

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Manuel Giraud <manuel@ledu-giraud.fr> writes:
>
>>> rm lisp/net/tramp*.elc; make
>>
>> Hi Michael,
>>
>> I've just rebuild emacs on current HEAD (with your fix) but I'm still
>> facing this issue. Would you need tramp trace for this?
>
> Is this after deleting the .elc files?  (Or a "make bootstrap" to make
> sure.)

Sorry my bad. It works after a "make bootstrap". Thanks Michael!

But how come emacs does not install the new .elc for a freshly patch .el
with a classical "make && make install"?
-- 
Manuel Giraud





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-06 11:17       ` Manuel Giraud
@ 2022-05-06 11:22         ` Michael Albinus
  2022-05-06 11:54           ` Manuel Giraud
  0 siblings, 1 reply; 13+ messages in thread
From: Michael Albinus @ 2022-05-06 11:22 UTC (permalink / raw)
  To: Manuel Giraud; +Cc: 55247-done, Lars Ingebrigtsen, Jacob Faibussowitsch

Version: 29.1

Manuel Giraud <manuel@ledu-giraud.fr> writes:

Hi Manuel,

> Sorry my bad. It works after a "make bootstrap". Thanks Michael!

Thanks for confirmation, I'm closing the bug.

> But how come emacs does not install the new .elc for a freshly patch .el
> with a classical "make && make install"?

I've patched tramp-skeleton-write-region, a macro in tramp.el. This file
has been recompiled.

However, in your use case the function tramp-sh-handle-write-region of
file tramp-sh.el is called, which uses that macro. Since tramp-sh.el
hasn't been recompiled, the old (erroneous) macro definition was still
used.

Best regards, Michael.





^ permalink raw reply	[flat|nested] 13+ messages in thread

* bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save
  2022-05-06 11:22         ` Michael Albinus
@ 2022-05-06 11:54           ` Manuel Giraud
  0 siblings, 0 replies; 13+ messages in thread
From: Manuel Giraud @ 2022-05-06 11:54 UTC (permalink / raw)
  To: Michael Albinus; +Cc: 55247-done, Lars Ingebrigtsen, Jacob Faibussowitsch

Michael Albinus <michael.albinus@gmx.de> writes:

[...]

> I've patched tramp-skeleton-write-region, a macro in tramp.el. This file
> has been recompiled.
>
> However, in your use case the function tramp-sh-handle-write-region of
> file tramp-sh.el is called, which uses that macro. Since tramp-sh.el
> hasn't been recompiled, the old (erroneous) macro definition was still
> used.

(haha I'm dumb). Thanks for the fix *and* this explanation.
Best regards,
-- 
Manuel Giraud





^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2022-05-06 11:54 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-05-03 16:55 bug#55247: [29.0.50; TRAMP] Tramp Always Thinks Buffer Changed On Disk After Edit -> Save Jacob Faibussowitsch
2022-05-05 11:16 ` Lars Ingebrigtsen
2022-05-05 14:32   ` Manuel Giraud
2022-05-05 14:42     ` Lars Ingebrigtsen
2022-05-05 14:50       ` Jacob Faibussowitsch
2022-05-05 15:05       ` Michael Albinus
2022-05-06  8:43 ` Michael Albinus
2022-05-06  9:39   ` Manuel Giraud
2022-05-06  9:53     ` Michael Albinus
2022-05-06 10:08     ` Lars Ingebrigtsen
2022-05-06 11:17       ` Manuel Giraud
2022-05-06 11:22         ` Michael Albinus
2022-05-06 11:54           ` Manuel Giraud

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