* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
@ 2014-11-03 20:56 Vincent Lefevre
2014-11-16 12:27 ` Vincent Lefevre
2014-12-30 10:45 ` Riku Saikkonen
0 siblings, 2 replies; 13+ messages in thread
From: Vincent Lefevre @ 2014-11-03 20:56 UTC (permalink / raw)
To: 18939
Usually a middle-click pastes the PRIMARY selection, but sometimes
it pastes something else. I don't know how to reproduce this bug,
but it occurred several times in the last two hours.
In GNU Emacs 24.4.1 (x86_64-pc-linux-gnu, GTK+ Version 3.14.3)
of 2014-10-25 on trouble, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11601000
System Description: Debian GNU/Linux unstable (sid)
Configured using:
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^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2014-11-03 20:56 bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection Vincent Lefevre
@ 2014-11-16 12:27 ` Vincent Lefevre
2014-12-28 15:03 ` Vincent Lefevre
2014-12-30 10:45 ` Riku Saikkonen
1 sibling, 1 reply; 13+ messages in thread
From: Vincent Lefevre @ 2014-11-16 12:27 UTC (permalink / raw)
To: 18939
On 2014-11-03 21:56:44 +0100, Vincent Lefevre wrote:
> Usually a middle-click pastes the PRIMARY selection, but sometimes
> it pastes something else. I don't know how to reproduce this bug,
> but it occurred several times in the last two hours.
It occurred again. This time I did the following:
1. Middle-click. The correct PRIMARY selection was pasted.
2. Left-click to another position (in the same buffer).
3. Middle-click. But something else was pasted!
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2014-11-16 12:27 ` Vincent Lefevre
@ 2014-12-28 15:03 ` Vincent Lefevre
2014-12-28 15:10 ` Vincent Lefevre
2015-03-21 13:42 ` Stefan Monnier
0 siblings, 2 replies; 13+ messages in thread
From: Vincent Lefevre @ 2014-12-28 15:03 UTC (permalink / raw)
To: 18939
This occurs very often, and I've finally managed to find a way to
reproduce the bug:
1. Open a file containing a line, say "foo", with "emacs -Q".
2. When the cursor is at the beginning, type C-k.
3. Select text in some other window.
4. Left-click in the initial Emacs window.
5. Middle-click in the initial Emacs window.
Instead of pasting the selected text, this pastes what was cut
with C-k.
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2014-12-28 15:03 ` Vincent Lefevre
@ 2014-12-28 15:10 ` Vincent Lefevre
2015-03-21 13:42 ` Stefan Monnier
1 sibling, 0 replies; 13+ messages in thread
From: Vincent Lefevre @ 2014-12-28 15:10 UTC (permalink / raw)
To: 18939
retitle 18939 24.4; a left-click in Emacs sometimes modifies the PRIMARY selection
thanks
On 2014-12-28 16:03:00 +0100, Vincent Lefevre wrote:
> This occurs very often, and I've finally managed to find a way to
> reproduce the bug:
>
> 1. Open a file containing a line, say "foo", with "emacs -Q".
>
> 2. When the cursor is at the beginning, type C-k.
>
> 3. Select text in some other window.
>
> 4. Left-click in the initial Emacs window.
>
> 5. Middle-click in the initial Emacs window.
>
> Instead of pasting the selected text, this pastes what was cut
> with C-k.
Note: in 5, the middle-click can also be done in an xterm, with the
same problem. What actually occurred is that in 4, the PRIMARY was
modified, while a left-click should never have modified anything!
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2014-12-28 15:03 ` Vincent Lefevre
2014-12-28 15:10 ` Vincent Lefevre
@ 2015-03-21 13:42 ` Stefan Monnier
2015-03-21 19:35 ` Vincent Lefevre
1 sibling, 1 reply; 13+ messages in thread
From: Stefan Monnier @ 2015-03-21 13:42 UTC (permalink / raw)
To: Vincent Lefevre; +Cc: 18939
> This occurs very often, and I've finally managed to find a way to
> reproduce the bug:
> 1. Open a file containing a line, say "foo", with "emacs -Q".
> 2. When the cursor is at the beginning, type C-k.
> 3. Select text in some other window.
> 4. Left-click in the initial Emacs window.
> 5. Middle-click in the initial Emacs window.
> Instead of pasting the selected text, this pastes what was cut
> with C-k.
I can't reproduce it here.
I did the following:
% emacs24 -Q ; That's Debian's Emacs-24.4
M-< C-k
C-x 5 b *Messages*
drag-mouse-1 [ in *Messages*, to select "information" ]
mouse-1 [ in *scratch* ]
mouse-2 [ in *scratch* ]
Result: it inserted "information", as it should.
Stefan
^ permalink raw reply [flat|nested] 13+ messages in thread* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2015-03-21 13:42 ` Stefan Monnier
@ 2015-03-21 19:35 ` Vincent Lefevre
2015-03-21 22:25 ` Stefan Monnier
0 siblings, 1 reply; 13+ messages in thread
From: Vincent Lefevre @ 2015-03-21 19:35 UTC (permalink / raw)
To: Stefan Monnier; +Cc: 18939
On 2015-03-21 09:42:32 -0400, Stefan Monnier wrote:
> > This occurs very often, and I've finally managed to find a way to
> > reproduce the bug:
>
> > 1. Open a file containing a line, say "foo", with "emacs -Q".
>
> > 2. When the cursor is at the beginning, type C-k.
>
> > 3. Select text in some other window.
^^^^^
> > 4. Left-click in the initial Emacs window.
>
> > 5. Middle-click in the initial Emacs window.
>
> > Instead of pasting the selected text, this pastes what was cut
> > with C-k.
>
> I can't reproduce it here.
> I did the following:
>
> % emacs24 -Q ; That's Debian's Emacs-24.4
> M-< C-k
> C-x 5 b *Messages*
> drag-mouse-1 [ in *Messages*, to select "information" ]
It step 3, it must be another window (e.g. xterm, or even some
other Emacs window at least if it is not the same process).
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
^ permalink raw reply [flat|nested] 13+ messages in thread* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2015-03-21 19:35 ` Vincent Lefevre
@ 2015-03-21 22:25 ` Stefan Monnier
2015-03-22 1:42 ` Vincent Lefevre
2015-03-22 18:39 ` Glenn Morris
0 siblings, 2 replies; 13+ messages in thread
From: Stefan Monnier @ 2015-03-21 22:25 UTC (permalink / raw)
To: Vincent Lefevre; +Cc: 18939
>> % emacs24 -Q ; That's Debian's Emacs-24.4
>> M-< C-k
>> C-x 5 b *Messages*
>> drag-mouse-1 [ in *Messages*, to select "information" ]
> It step 3, it must be another window
With C-x 5 b I did get another window (frame).
> (e.g. xterm, or even some other Emacs window at least if it is not the
> same process).
I haven't tried with another Emacs process, but I did try with an xterm
and got the same result.
What do you get if you follow my recipe?
Stefan
^ permalink raw reply [flat|nested] 13+ messages in thread* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2015-03-21 22:25 ` Stefan Monnier
@ 2015-03-22 1:42 ` Vincent Lefevre
2015-03-22 18:33 ` Jan Djärv
2015-03-22 18:39 ` Glenn Morris
1 sibling, 1 reply; 13+ messages in thread
From: Vincent Lefevre @ 2015-03-22 1:42 UTC (permalink / raw)
To: Stefan Monnier; +Cc: 18939
On 2015-03-21 18:25:01 -0400, Stefan Monnier wrote:
> >> % emacs24 -Q ; That's Debian's Emacs-24.4
> >> M-< C-k
> >> C-x 5 b *Messages*
> >> drag-mouse-1 [ in *Messages*, to select "information" ]
> > It step 3, it must be another window
>
> With C-x 5 b I did get another window (frame).
Yes, but this also has the effect to do other operations in
the Emacs process.
> > (e.g. xterm, or even some other Emacs window at least if it is not the
> > same process).
>
> I haven't tried with another Emacs process, but I did try with an xterm
> and got the same result.
> What do you get if you follow my recipe?
Emacs behaves correctly in this case. Ditto if I do the
C-x 5 b *Messages* before the M-< C-k. But if the other window
belongs to a different process, the bug occurs.
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2015-03-22 1:42 ` Vincent Lefevre
@ 2015-03-22 18:33 ` Jan Djärv
0 siblings, 0 replies; 13+ messages in thread
From: Jan Djärv @ 2015-03-22 18:33 UTC (permalink / raw)
To: Vincent Lefevre, Stefan Monnier; +Cc: 18939-done
Hi.
It seems I introduced this bug when fixing 16382.
The analysis that mouse-drag-track has something to do with this is correct,
however it is not pop-mark, it is deactivate-mark who sets PRIMARY wrongly
sometimes (pop-mark may itself call deactivate-mark).
I have checked in a fix in the emacs-24 branch.
Jan D.
Den 2015-03-22 02:42, Vincent Lefevre skrev:
> On 2015-03-21 18:25:01 -0400, Stefan Monnier wrote:
>>>> % emacs24 -Q ; That's Debian's Emacs-24.4
>>>> M-< C-k
>>>> C-x 5 b *Messages*
>>>> drag-mouse-1 [ in *Messages*, to select "information" ]
>>> It step 3, it must be another window
>>
>> With C-x 5 b I did get another window (frame).
>
> Yes, but this also has the effect to do other operations in
> the Emacs process.
>
>>> (e.g. xterm, or even some other Emacs window at least if it is not the
>>> same process).
>>
>> I haven't tried with another Emacs process, but I did try with an xterm
>> and got the same result.
>> What do you get if you follow my recipe?
>
> Emacs behaves correctly in this case. Ditto if I do the
> C-x 5 b *Messages* before the M-< C-k. But if the other window
> belongs to a different process, the bug occurs.
>
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2015-03-21 22:25 ` Stefan Monnier
2015-03-22 1:42 ` Vincent Lefevre
@ 2015-03-22 18:39 ` Glenn Morris
1 sibling, 0 replies; 13+ messages in thread
From: Glenn Morris @ 2015-03-22 18:39 UTC (permalink / raw)
To: Stefan Monnier; +Cc: Vincent Lefevre, 18939
Stefan Monnier wrote:
> I haven't tried with another Emacs process, but I did try with an xterm
> and got the same result.
Totally reproducible for me in emacs-24 or Debian's 24, but curiously
not apparently in master... If someone else sees the same, they might
try bisecting to find what fixed it. There does seem to be weirdness in
that some times it does _not_ happen even with 24. I think maybe I
convinced myself this was due to selecting Emacs by clicking on the
window border rather than in the actual body of scratch. But that could
be coincidence I suppose.
in xterm:
emacs -Q
M-< C-k # in scratch
mouse-1 on xterm that launched Emacs, double mouse-1 on "emacs"
mouse-1 # in scratch. NB in the buffer, not eg on the WM frame
mouse-2
-> ";; This buffer is for notes..."
This is under XFCE on Debian testing, in case that matters, with
WM focus-follows-click.
^ permalink raw reply [flat|nested] 13+ messages in thread
* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2014-11-03 20:56 bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection Vincent Lefevre
2014-11-16 12:27 ` Vincent Lefevre
@ 2014-12-30 10:45 ` Riku Saikkonen
2015-01-04 2:23 ` Vincent Lefevre
2015-01-18 1:17 ` Glenn Morris
1 sibling, 2 replies; 13+ messages in thread
From: Riku Saikkonen @ 2014-12-30 10:45 UTC (permalink / raw)
To: 18939
I tried to trace where the bug occurs, and got as far as this:
mouse-drag-track contains the lines
;; Otherwise, run binding of terminating up-event.
(deactivate-mark)
(if do-multi-click
(goto-char start-point)
(unless moved-off-start
(pop-mark)))
(lines 858-863 of mouse.el in Emacs 24.4.1)
Commenting out the last (pop-mark) fixes the bug, but leaves extra marks
in the mark ring (accessible with C-u C-SPC) at every point you click.
There's a corresponding push-mark on line 796 which this pop-mark
appears to try to undo, but it appears that as a side effect pop-mark
sets the primary selection (in the situation described in the bug).
I am not sure what would be a proper fix. Perhaps mouse-drag-track
should not push the mark at all until it detects something else than a
single click (i.e., (or moved-off-start do-multi-click) or something)?
(From a quick look at the source, that seems to be how mouse-drag-track
worked in Emacs 23.4.1. But the source has changed quite a lot since
then.)
PS. I found out about this bug because Debian currently considers it to
be a release-critical bug; see <http://bugs.debian.org/774090>.
^ permalink raw reply [flat|nested] 13+ messages in thread* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2014-12-30 10:45 ` Riku Saikkonen
@ 2015-01-04 2:23 ` Vincent Lefevre
2015-01-18 1:17 ` Glenn Morris
1 sibling, 0 replies; 13+ messages in thread
From: Vincent Lefevre @ 2015-01-04 2:23 UTC (permalink / raw)
To: Riku Saikkonen; +Cc: 774090, 18939
[-- Attachment #1: Type: text/plain, Size: 1002 bytes --]
[Cc to the Debian bug]
On 2014-12-30 12:45:12 +0200, Riku Saikkonen wrote:
> I tried to trace where the bug occurs, and got as far as this:
>
> mouse-drag-track contains the lines
>
> ;; Otherwise, run binding of terminating up-event.
> (deactivate-mark)
> (if do-multi-click
> (goto-char start-point)
> (unless moved-off-start
> (pop-mark)))
>
> (lines 858-863 of mouse.el in Emacs 24.4.1)
[...]
How about locally setting select-active-regions to nil for
(deactivate-mark)? See attached patch, which seems to work
for me, though I don't know all the consequences.
It is inspired from the patch suggested at
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=6872#8
and the one that was really applied as
1c409d0b963ebdb1f48b90ddce85c56d989bee5f.
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
[-- Attachment #2: emacs24-primarysel2.patch --]
[-- Type: text/plain, Size: 481 bytes --]
diff --git a/lisp/mouse.el b/lisp/mouse.el
index e267418..2afe313 100644
--- a/lisp/mouse.el
+++ b/lisp/mouse.el
@@ -856,7 +856,8 @@ DO-MOUSE-DRAG-REGION-POST-PROCESS should only be used by
(copy-region-as-kill (mark) (point)))))
;; Otherwise, run binding of terminating up-event.
- (deactivate-mark)
+ (let (select-active-regions)
+ (deactivate-mark))
(if do-multi-click
(goto-char start-point)
(unless moved-off-start
^ permalink raw reply related [flat|nested] 13+ messages in thread
* bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection
2014-12-30 10:45 ` Riku Saikkonen
2015-01-04 2:23 ` Vincent Lefevre
@ 2015-01-18 1:17 ` Glenn Morris
1 sibling, 0 replies; 13+ messages in thread
From: Glenn Morris @ 2015-01-18 1:17 UTC (permalink / raw)
To: Riku Saikkonen; +Cc: 18939
Riku Saikkonen wrote:
> PS. I found out about this bug because Debian currently considers it to
> be a release-critical bug; see <http://bugs.debian.org/774090>.
FWIW, that severity was self-assigned by the OP.
For those who care about such things, this has apparently has a
(placeholder?) CVE number (CVE-2014-9483) now. (It might have been nice
if these developments had been mentioned here.)
See eg
http://www.scip.ch/en/?vuldb.68502 # "critical" (?!)
http://xforce.iss.net/xforce/xfdb/99688 # medium risk
^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2015-03-22 18:39 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-11-03 20:56 bug#18939: 24.4; middle-click sometimes pastes data other than the PRIMARY selection Vincent Lefevre
2014-11-16 12:27 ` Vincent Lefevre
2014-12-28 15:03 ` Vincent Lefevre
2014-12-28 15:10 ` Vincent Lefevre
2015-03-21 13:42 ` Stefan Monnier
2015-03-21 19:35 ` Vincent Lefevre
2015-03-21 22:25 ` Stefan Monnier
2015-03-22 1:42 ` Vincent Lefevre
2015-03-22 18:33 ` Jan Djärv
2015-03-22 18:39 ` Glenn Morris
2014-12-30 10:45 ` Riku Saikkonen
2015-01-04 2:23 ` Vincent Lefevre
2015-01-18 1:17 ` Glenn Morris
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