OSC52 clipboard in popup windows

[Carl Dong]

I’m trying to use the relatively new popup window feature, but OSC52 clipboards don’t seem to work. My config has the following lines:

...
set -g set-clipboard on
...
bind t display-popup -E
…

In a normal non-popup pane, I check my environment:

$ echo $TERM
screen-256color

$ tmux info|grep Ms:
192: Ms: (string) \033]52;%p1%s;%p2%s\a

And the OSC 52 clipboard works great:

$ printf "\033]52;c;$(echo outside | base64)\a”

$ pbpaste
outside

Then, in a popup pane, I check my environment again:

$ echo $TERM
screen-256color

$ tmux info|grep Ms:
192: Ms: (string) \033]52;%p1%s;%p2%s\a

And the OSC 52 clipboard doesn’t work at all:

$ printf "\033]52;c;$(echo inside | base64)\a”

$ pbpaste
printf "\033]52;c;$(echo inside | base64)\a” # This was the last thing I copied

I’m a bit stumped here and would appreciate any guidance

–Carl

[Nicholas Marriott]

OSC 52 does not work in popups at the moment.

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[Carl Dong]

How hard would it be to implement support for it? I’m happy to write a patch if pointed in the right direction.

–Carl

[Nicholas Marriott]

Look at input.c input_osc_52 at the start it checks wp == NULL which means it needs a pane.

It doesn't use wp until twice at the end of the function. The notify is easy enough, you can just skip it if wp is NULL.

But for the screen_write_start - I'm not sure why it calls screen_write_start/stop rather than using ictx->ctx, so you could maybe try removing them and using that instead of the stack screen_write_ctx.

If that won't work it may be difficult to set up the context because the input code may not have everything it needs. It may mean another callback back to the screen owner.

[Carl Dong]

Thanks, will take a look.