How can I kill tmux windows from the window list?

Question

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?

Answer 1

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 x, then when you are prompted:

Kill window 1?

...press y to accept. This also works for killing individual panes, or even whole sessions.