How to stop X Window System (xorg / x11) from pasting on middle mouse click / button press

dontpastemypassword.md

How to stop X Window System (xorg / x11) from pasting on middle mouse click / button press

This was made to work with Arch

Steps:

1. Install xmousepasteblock from the Arch User Repository: https://aur.archlinux.org/packages/xmousepasteblock

(Recommended to just use yay:

# Install yay package manager
sudo pacman -S --needed git base-devel && git clone https://aur.archlinux.org/yay.git && cd yay && makepkg -si

# Install xmousepasteblock through yay
yay -S xmousepasteblock

On KDE Set 'NoEmptyClipboard' to false in ~/.config/klipperrc

[General]
IgnoreImages=false
Version=6.2.3
NoEmptyClipboard=false # <-- This. Add it if you don't have it.

2. Add a Systemd service for xmousepasteblock by creating the file /etc/systemd/system/xmousepasteblock.service
3. Add the following contents to said file:

[Unit]
Description=XMousePasteBlock Service
After=display-manager.service

[Service]
ExecStart=/usr/bin/xmousepasteblock
Restart=always
Environment=DISPLAY=:0

[Install]
WantedBy=default.target

5. Enable the new service: sudo systemctl enable xmousepasteblock.service
6. Start the new service: sudo systemctl start xmousepasteblock.service
7. Restart sudo reboot

That's it. It should now be installed and working.