copy/paste not working

[rikona]

On Sun, 21 Jul 2019 23:06:15 +0000
Mike Marchywka <marchywka at hotmail.com> wrote:

> On Sun, Jul 21, 2019 at 03:44:30PM -0700, rikona wrote:
> > On Sun, 21 Jul 2019 19:02:46 +0000
> > Mike Marchywka <marchywka at hotmail.com> wrote:
> >   
> > > On Sun, Jul 21, 2019 at 08:46:52PM +0200, Ralf Mardorf via
> > > ubuntu-users wrote:  
> > > > On Sun, 21 Jul 2019 20:37:02 +0200, Ralf Mardorf via
> > > > ubuntu-users wrote:    
> > > > >On Sun, 2019-07-21 at 11:26 -0700, rikona wrote:    
> > > > >> Did this always work between ANY Gnome/KDE/MATE/etc pgms you
> > > > >> run?      
> > > > >
> > > > >Yes, parcellite works with Qt apps such as Qupzilla or Falkon
> > > > >and it works with Gnome apps such as Gedit or Mate apps such
> > > > >as Pluma or Engrampa, too.    
> > > > 
> > > > Did you ask regarding klipper? I used klipper a long, long time
> > > > ago, it worked with all apps,GNOME and KDE too, but Mate and
> > > > Cinnamon unlikely existed that time.
> > > >     
> > > 
> > > I did not follow the thread- just saw the burst of messages and
> > > thought it went off topic :) However, what is the source of the
> > > incompatibility?
> > > 
> > > You could try using xclip and find out if your stuff is on the
> > > right clipboard if that is a problem. I've had odd problems
> > > sometimes but most of the time that works. You can put stuff from
> > > the command line onto a clipboard and see who can read it and
> > > also see what others put there. 
> > > 
> > > I use xclip  for getting links from browser into scripts.  
> > 
> > I installed xclip, and it verified what I seem to see. Stuff copied
> > in falkon does not show up on the clipboard. But, it added to the
> > mystery a bit. I have three instances of kate running. Copying from
> > #1 instance of kate DOES show up, but copying from kate #2 or #3 DO
> > NOT show up. If something is broken, as Ralf suggests, it is broken
> > in a weird way...
> > 
> > You mentioned the "right clipboard" - is there more than one? If so,
> > what/where is it, and how can I access it?  
> 
> I never entirely figured out what they are but if you try "man xclip"
> I guess I was thinking of selection, 

I saw that but could not figure it out either.

> https://wiki.archlinux.org/index.php/Clipboard#Selections

This gives some insight into the confusion but no clue which pgms use
what, and how/where they do it. Still can't tell if the KDE copy
actually does something...

Thanks for the clarification.
 
> The majority of programs for Xorg, including Qt and GTK applications,
> follow this behavior. While ICCCM also defines a SECONDARY selection,
> it does not have a consensually agreed upon purpose. Despite the
> naming, all three selections are basically "clipboards". Rather than
> the old "cut buffers" system where arbitrary applications could
> modify data stored in the cut buffers, only one application may
> control or "own" a selection at one time. This prevents
> inconsistencies in the operation of the selections.
> 
> 
>        -selection
>               specify which X selection to use, options are
> "primary"  to  use XA_PRIMARY  (default),  "secondary"  for
> XA_SECONDARY or "clip‐ board" for XA_CLIPBOARD
>