Utilise native support for OSC 52 with the -w option - Fixes #92

[hegga]

This uses the -w option for the set-buffer command which implements OSC 52 support. This fixes my issue in #92.

[laktak]

Thanks for looking into this.

I can't merge it as it is because

• -w requires tmux 3.2 so not everyone may have it
• osc52 is already used by the example in the wiki - so if we change this we might break some setups

Could you use the clip_tool_run parameter like this?

copy() {
    if [[ "$clip_tool_run" == "fg" ]]; then
        # run in foreground as OSC-52 copying won't work otherwise
        tmux set-buffer -- "$1"
        tmux run-shell "tmux show-buffer|$clip_tool"
    elif [[ "$clip_tool_run" == "osc-52" ]]; then
        # use tmux OSC 52 copy
        tmux set-buffer -w -- "$1"
    else
        # run in background as xclip won't work otherwise
        tmux set-buffer -- "$1"
        tmux run-shell -b "tmux show-buffer|$clip_tool"
    fi
}

[hegga]

Sure, @laktak! I've updated the PR accordingly.