bug#8743: Strange '1; 2600; 0' symbols appear when starting from console

bug#8743: Strange '1; 2600; 0' symbols appear when starting from console

[HighCat]

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When open file from console, there are some strange symbols pasted on the
cursor position:  "1;2600;0".
This happens accidentally if you type something while emacs still starting.

Easily reproduced when you run Emacs from ssh session on remote server.
Somewhat harder to do this on local machine — but I managed to reproduce it
1-2 times.

I use:
Emacs 23.3.1, self-compiled, and also reproduced on older versions (from
Ubuntu 10.04 and 10.10 packages).
GNOME Terminal 2.32.0
Remote server, when ssh'ing — Ubuntu 10.04.2

There's some duscussion of the problem here:
http://groups.google.com/group/gnu.emacs.help/browse_thread/thread/dca1b7286458aaf5

I consider it a bug, as it's embarrassing for me (as end-user of Emacs),
when I edit some script on server,
and later it crashes, because some strange "1;2600;0" in the beginning of
file, which I missed.
Seems like I have a habit to type "C-n" or "C-v" instantly when opening some
files, so I got the issue from time to time.


(sorry for my English — mistakes are possible)

--
HighCat/Alexander

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bug#8743: Strange '1; 2600; 0' symbols appear when starting from console

[Glenn Morris]

HighCat wrote:

> When open file from console, there are some strange symbols pasted on the
> cursor position:  "1;2600;0".

Sounds like

http://debbugs.gnu.org/cgi/bugreport.cgi?bug=1495       (and 1494)

which was supposedly fixed (?) in 23.1.

> Emacs 23.3.1, self-compiled, and also reproduced on older versions (from
> Ubuntu 10.04 and 10.10 packages).

bug#8743: Strange '1; 2600; 0' symbols appear when starting from console

[HighCat]

Yes, exactly the same issue,
but I'm able to reproduce it with 23.1.1 and 23.3.1

On 05/27/2011 09:10 PM, Glenn Morris wrote:
> HighCat wrote:
>
>> When open file from console, there are some strange symbols pasted on the
>> cursor position:  "1;2600;0".
> Sounds like
>
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=1495       (and 1494)
>
> which was supposedly fixed (?) in 23.1.
>
>> Emacs 23.3.1, self-compiled, and also reproduced on older versions (from
>> Ubuntu 10.04 and 10.10 packages).

bug#8743: rxvt-unicode

[HighCat]

Just found that the problem exists while using Gnome Terminal,
but with rxvt-unicode all is pretty fine.

bug#8743: Strange '1; 2600; 0' symbols appear when starting from console

[Stefan Kangas]

found 8743 27.0.50
quit

HighCat <highcatland@gmail.com> writes:

> When open file from console, there are some strange symbols pasted on the cursor position:  "1;2600;0".
>
> This happens accidentally if you type something while emacs still starting.
>
> Easily reproduced when you run Emacs from ssh session on remote server.
> Somewhat harder to do this on local machine — but I managed to reproduce it 1-2 times.
>
> I use:
> Emacs 23.3.1, self-compiled, and also reproduced on older versions (from Ubuntu 10.04 and 10.10 packages).
> GNOME Terminal 2.32.0
> Remote server, when ssh'ing — Ubuntu 10.04.2
>
> There's some duscussion of the problem here: http://groups.google.com/group/gnu.emacs.help/browse_thread/thread/dca1b7286458aaf5
>
> I consider it a bug, as it's embarrassing for me (as end-user of Emacs), when I edit some script on server,
> and later it crashes, because some strange "1;2600;0" in the beginning of file, which I missed.
> Seems like I have a habit to type "C-n" or "C-v" instantly when opening some files, so I got the issue from time to time.

I'm able to reproduce this using gnome-terminal on current master.

To reproduce, start gnome-terminal, emacs -Q -nw, hit return, and hit
any key before it starts.  I see the characters "e65;5402;1c" inserted
in *scratch*.

It's easy to reproduce without running a remote connection, but you
need to be fast on the keys and hit some other key immediately after
return.

I don't see this when running rxvt.

Best regards,
Stefan Kangas

bug#8743: Strange '1; 2600; 0' symbols appear when running in gnome-terminal

[Lars Ingebrigtsen]

Stefan Kangas <stefan@marxist.se> writes:

> To reproduce, start gnome-terminal, emacs -Q -nw, hit return, and hit
> any key before it starts.  I see the characters "e65;5402;1c" inserted
> in *scratch*.

And I can confirm that this bug is still present in Emacs 29.

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

bug#8743: Strange '1; 2600; 0' symbols appear when running in gnome-terminal

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Thu, 27 Jan 2022 19:03:48 +0100
> Cc: HighCat <highcatland@gmail.com>, 8743@debbugs.gnu.org
> 
> Stefan Kangas <stefan@marxist.se> writes:
> 
> > To reproduce, start gnome-terminal, emacs -Q -nw, hit return, and hit
> > any key before it starts.  I see the characters "e65;5402;1c" inserted
> > in *scratch*.
> 
> And I can confirm that this bug is still present in Emacs 29.

See xterm--version-handler, I think this comes from there.

bug#8743: Strange '1; 2600; 0' symbols appear when running in gnome-terminal

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> See xterm--version-handler, I think this comes from there.

Yes, or possibly something else doing queries; I'm not quite sure.  But
poking at the stuff, if we disable all the queries, the problem goes
away.  

(defun xterm--query (query handlers &optional no-async)
[...]
      ;; Pending input can be mistakenly returned by the calls to
      ;; read-event below: discard it.
      (discard-input)
      (send-string-to-terminal query)

And it seems like it's trying to do the right thing by getting rid of
any input before doing the queries, but the `discard-input' here seems
to have no effect.

(I haven't debugged further.)

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