How to prevent double X pastes?

How to prevent double X pastes?

[Robert J. Chassell]

This is very likely an X issue, not a GNU Emacs issue.  I would like a
work around.

How do I prevent a region being pasted twice when I copy the primary
region with my mouse from GNU Emacs to an xterm or an RXVT shell in X?

Doubling also happens when I copy a command from one xterm to another.
That suggests the problem is an X issue.

However, doubling does not happen when I go from an xterm to GNU Emacs.
Also, doubling does not happen between two RXVT shells.

I am using the Debian Testing distribution of GNU/Linux, updated this
morning.

  X.Org X Server 1.4.2
  X Protocol Version 11, Revision 0
  Build Operating System: Linux Debian (xorg-server 2:1.4.2-3)
  Current Operating System: Linux benthic 2.6.22-3-686 #1 SMP 
  Sun Feb 10 20:20:49 UTC 2008 i686

  Today's GNU Emacs CVS, Sat, 2008 Aug 23 09:50 UTC
  GNU Emacs 23.0.60.51 (i686-pc-linux-gnu, GTK+ Version 2.12.11)
  started with

       /usr/local/src/emacs/src/emacs -Q -D

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc

Re: How to prevent double X pastes?

[James Cloos]

>>>>> "Robert" == Robert J Chassell <bob@rattlesnake.com> writes:

Robert> How do I prevent a region being pasted twice when I copy the
Robert> primary region with my mouse from GNU Emacs to an xterm or an
Robert> RXVT shell in X?

Do you have a three button mouse, or are you using middle button
emulation?

Which driver do you use, mouse or evdev?

Is the mouse ps/2 or usb?

If the mouse driver is loaded and listening on /dev/input/mice and evdev
is also loaded and listening on the /dev/input/evdev* devices you could
be getting two X events for each button press/mouse movement.

The X logs would give some clues if that is the case.

Or, if you're middle button is also a wheel, a slight forward or
backward movement when pressing it could lead to a double event.

If you are using middle button emulation, there could be some issue with
the timeouts.

These are all guesses, of course.

-jimC
-- 
James Cloos <cloos@jhcloos.com>         OpenPGP: 1024D/ED7DAEA6

Re: How to prevent double X pastes?

[Robert J. Chassell]

[Earlier I said,
    This is very likely an X issue, not a GNU Emacs issue.  I would like
    a work around.

    How do I prevent a region being pasted twice when I copy the primary
    region with my mouse from GNU Emacs to an xterm or an RXVT shell in
    X?]

James Cloos <cloos@jhcloos.com> responded and asked,

    Do you have a three button mouse, or are you using middle button
    emulation?

three button

    Is the mouse ps/2 or usb?

ps/2

My /etc/X11/xorg.conf file:

	Identifier	"Generic Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/psaux"
        Option		"Protocol"		"PS/2"
       
Occasionally, I plug in a USB mouse with a wheel that I can use as a
center button, but have not recently.  I have not plugged it in when I
had double pastings.  For my USB mouse, even though it is not plugged
in, my /etc/X11/xorg.conf file has a section that says:

        Identifier	"USBMice"
	Driver		"mouse"
        Option	        "Protocol"              "IMPS/2"
        Option	        "Device"                "/dev/input/mice"

I do not have evdev* in /dev/, /dev/input/, or /etc/X11/xorg.conf

/var/log/Xorg.0.log says:

  (**) |-->Input Device "Generic Keyboard"
  (**) |-->Input Device "Generic Mouse"
  (**) |-->Input Device "USBMice"
  ...
  (II) LoadModule: "mouse"
  (II) Loading /usr/lib/xorg/modules/input//mouse_drv.so
  (II) Module mouse: vendor="X.Org Foundation"
          compiled for 1.4.0.90, module version = 1.3.0
          Module class: X.Org XInput Driver
          ABI class: X.Org XInput driver, version 2.0
  ...
  (==) R128(0): Silken mouse enabled
  ...
  (**) Generic Mouse: Device: "/dev/psaux"
  (**) Generic Mouse: Protocol: "PS/2"
  (**) Option "CorePointer"
  (**) Generic Mouse: always reports core events
  (**) Option "Device" "/dev/psaux"
  (**) Option "Buttons" "5"
  (==) Generic Mouse: Emulate3Buttons, Emulate3Timeout: 50
  (**) Option "ZAxisMapping" "4 5"
  (**) Generic Mouse: ZAxisMapping: buttons 4 and 5
  (**) Generic Mouse: Buttons: 9
  (**) Generic Mouse: Sensitivity: 1
  (**) Option "Protocol" "IMPS/2"
  (**) USBMice: Device: "/dev/input/mice"
  (**) USBMice: Protocol: "IMPS/2"
  (**) Option "SendCoreEvents" "true"
  (**) USBMice: always reports core events
  (**) Option "Device" "/dev/input/mice"
  (**) Option "Buttons" "5"
  (==) USBMice: Emulate3Buttons, Emulate3Timeout: 50
  (**) Option "ZAxisMapping" "4 5"
  (**) USBMice: ZAxisMapping: buttons 4 and 5
  (**) USBMice: Buttons: 9
  (**) USBMice: Sensitivity: 1
  (**) Option "CoreKeyboard"
  (**) Generic Keyboard: always reports core events
  (**) Option "Protocol" "standard"
  (**) Generic Keyboard: Protocol: standard
  (**) Option "AutoRepeat" "500 30"
  (**) Option "XkbRules" "xorg"
  (**) Generic Keyboard: XkbRules: "xorg"
  (**) Option "XkbModel" "pc105"
  (**) Generic Keyboard: XkbModel: "pc105"
  (**) Option "XkbLayout" "us"
  (**) Generic Keyboard: XkbLayout: "us"
  (**) Option "CustomKeycodes" "off"
  (**) Generic Keyboard: CustomKeycodes disabled
  (II) evaluating device (Generic Keyboard)
  (II) XINPUT: Adding extended input device "Generic Keyboard" (type: KEYBOARD)
  (II) evaluating device (Generic Mouse)
  (II) XINPUT: Adding extended input device "Generic Mouse" (type: MOUSE)
  (II) evaluating device (USBMice)
  (II) XINPUT: Adding extended input device "USBMice" (type: MOUSE)
  (II) evaluating device (Generic Keyboard)
  (II) XINPUT: Adding extended input device "Generic Keyboard" (type: KEYBOARD)
  (II) Generic Mouse: ps2EnableDataReporting: succeeded
  (II) USBMice: ps2EnableDataReporting: succeeded
  SetClientVersion: 0 9
  (II) 3rd Button detected: disabling emulate3Button
  (II) 3rd Button detected: disabling emulate3Button


Debian Testing distribution of GNU/Linux, updated this morning

  X.Org X Server 1.4.2
  X Protocol Version 11, Revision 0
  Build Operating System: Linux Debian (xorg-server 2:1.4.2-3)
  Current Operating System: Linux benthic 2.6.22-3-686 #1 SMP 
  Sun Feb 10 20:20:49 UTC 2008 i686

  Today's GNU Emacs CVS, Sat, 2008 Aug 23 09:50 UTC
  GNU Emacs 23.0.60.51 (i686-pc-linux-gnu, GTK+ Version 2.12.11)
  started with

       /usr/local/src/emacs/src/emacs -Q -D

What else can I do?

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc

Re: How to prevent double X pastes?

[Andreas Schwab]

bob@rattlesnake.com (Robert J. Chassell) writes:

> My /etc/X11/xorg.conf file:
>
> 	Identifier	"Generic Mouse"
> 	Driver		"mouse"
> 	Option		"CorePointer"
> 	Option		"Device"		"/dev/psaux"
>         Option		"Protocol"		"PS/2"

Try removing that.  /dev/input/mice already functions as a multiplexer
for all mouse events in the system.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Re: How to prevent double X pastes?

[Robert J. Chassell]

No success.

    > My /etc/X11/xorg.conf file:
    >
    > 	Identifier	"Generic Mouse"
    > 	Driver		"mouse"
    > 	Option		"CorePointer"
    > 	Option		"Device"		"/dev/psaux"
    >         Option		"Protocol"		"PS/2"

    Try removing that.  /dev/input/mice already functions as a multiplexer
    for all mouse events in the system.

I tried, as a different user, starting from a different virtual console
and starting X (with an Enlightenment window manager, as I normally
have).  In the cases where X started, I pasted doubles from `emacs -Q
-D' to an xterm as before.

I could start X when I had everything in my /etc/X11/xorg.conf file
except that I changed /dev/psaux to /dev/input/mice.  That section
looked like this:

	Identifier	"Generic Mouse"
	Driver		"mouse"
 	Option		"CorePointer"
# 	Option		"Device"		"/dev/psaux"
 	Option		"Device"		"/dev/input/mice"
        Option		"Protocol"		"PS/2"

Similarly, I could start X when I commented out most parts of that
section but left the Driver as "mouse".

	Identifier	"Generic Mouse"
	Driver		"mouse"
# 	Option		"CorePointer"
# 	Option		"Device"		"/dev/psaux"
# 	Option		"Device"		"/dev/input/mice"
#       Option		"Protocol"		"PS/2"

Those gave me doubles.

I could not start X when I commented out those options plus the driver
or those options plus the driver plus the identifier.

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc

Re: How to prevent double X pastes?

[James Cloos]

Andreas' suggestion is that your USBMouse section, which references
/dev/input/mice, is all that you need.  The separate Generic Mouse
section becomes superfluous.  (And is exactly what I was going to write
until I saw his reply.)

So you only need one mouse section which specified /dev/input/mice;
it will handle every mouse you plug in.

-JimC
-- 
James Cloos <cloos@jhcloos.com>         OpenPGP: 1024D/ED7DAEA6

Re: How to prevent double X pastes?

[Robert J. Chassell]

James Cloos <cloos@jhcloos.com> wrote

    Andreas' suggestion is that your USBMouse section, which references
    /dev/input/mice, is all that you need. 

Success!  After seven tries with various configurations.  Thank you.

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc

Re: How to prevent double X pastes?

[Richard M. Stallman]

Please add an entry about this to etc/PROBLEMS.

Re: How to prevent double X pastes?

[Robert J. Chassell]

RMS said

    Please add an entry about this to etc/PROBLEMS.

Done.

I never would have thought of it.  I put the entry at the end of the
section on ** General X problems in a subsection with three asterisks.

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc