Add support for OSC 52
Submitted by Raul
Link to original bug (#795774)
Description
OSC 52 control code can be used to copy text into the clipboard.
tmux has native support for the OSC 52 sequence. See man tmux
https://linux.die.net/man/1/tmux under the set-clipboard setting.
If gnome terminal could support OSC 52 it would remove the reliance on xclip or xsel and copying in tmux would work regardless of ssh tunnels.