When I press Ctrl+b, W, tmux shows the list of all current windows and their panes. How can I kill a window and its panes from within this list view?
This is a new capability of the
choose-tree feature in tmux 2.8. From tmux(1):
Key Function Enter Choose selected item Up Select previous item Down Select next item x Kill selected item
So after you've navigated to the right window, press
<tmux prefix> + x, then when you are prompted:
Kill window 1?
y to accept. This also works for killing individual panes, or even whole sessions.