If you're willing to go down to a single boolean of "needs attention", tmux responds to the terminal bell.
Was just about to say this. And the application can also try to rename the terminal window title with the OSC 2 escape sequence. Don't think you need more than that. The bell was the general "Something needs your attention" since forever.
Was just about to say this. And the application can also try to rename the terminal window title with the OSC 2 escape sequence. Don't think you need more than that. The bell was the general "Something needs your attention" since forever.