On Monday, 31 January 2022 17:29:28 CET Max Nikulin wrote:
> On 31/01/2022 08:14, Ihor Radchenko wrote:
> > chris writes:
> > 
> > I am not using Wayland. However, if I just do (kill-new "test") in X and
> > my select-enable-primary is nil (default) - "test" will not go to my X
> > clipboard. It is the default behaviour of Emacs in X that has nothing to
> > do with Org mode.

This quote above is not from me (Chris), I think it's from Ihor, I just say that to try not to 
add to confusion ;)
I myself, am using Wayland.

> Ihor, please, do not add more confusion to this obscure issue.
> `select-enable-primary' controls PRIMARY selection, not CLIPBOARD.
> `select-enable-clipboard' is an independent variable.
> 
> Chris, did you tune clipboard manager in KDE? This kind of software may
> cause quite peculiar behavior...

So, on debian/sid/kde/wayland, I've clicked on "configure clipboard" in the default plasma 
panel:
I can see "ignore selection" is selected. I don't like "primary selection", I think it's messy.

> 
> So, do not confuse PRIMARY selection and CLIPBOARD. Unlike MS Windows,
> X11 has several selection (and legacy cut buffers). I do not know the
> full story, but it seems that wayland developers decided that it is more
> secure to have just clipboard, but they did not sustain pressure of
> users who really like that "hard to discover feature": just select some
> text with mouse without additional hotkeys and paste it using middle click.

Yes, you inadvertently select text, and inadvertently paste it: that's legacy for you.

Well, look at that: 
https://bugs.kde.org/show_bug.cgi?id=441668[1]
"Recently middle-click pasting got implemented for the Wayland platform. However, this 
feature could be regarded as an annoyance due to the risk of inadvertent pasting.", etc.

So "selection ignored by the clipboard" according to kwin/wayland seems to mean "user 
can't see it when they look in the clipboard"
But it's fully working all right and you just can't disable it.
Awesome.

So yeah, debian-sid-kde-plasma-wayland:
There is both "primary selection"  and "clipboard" and you just can't disable "primary 
selection".

At least according to the above kde bug report.

> 
> Ububntu-21.10 impish, gnome, wayland, Emacs-27.1. I am aware that KDE
> may have rather different implementation related to wayland protocol and
> something may change in Emacs since the released version. I just have VM
> with such configuration.
> 
> New session, empty selection and clipboard:
> $ wl-paste --list-types
> No selection
> $ wl-paste --primary --list-types
> No selection
> 
> Select a word in terminal using mouse:
> $ wl-paste --primary --list-types
> text/plain
> text/plain;charset=utf-8
> STRING
> TEXT
> COMPOUND_TEXT
> UTF8_STRING
> $ wl-paste --list-types
> No selection
> 
> [Ctrl+Shift+V] to copy selection to clipboard
> $ wl-paste --primary --list-types
> text/plain
> text/plain;charset=utf-8
> STRING
> TEXT
> COMPOUND_TEXT
> UTF8_STRING
> $ wl-paste --list-types
> text/plain
> text/plain;charset=utf-8
> STRING
> TEXT
> COMPOUND_TEXT
> UTF8_STRING