Updating window indexes with tmux?

Using tmux, I closed a window indexed 3, so now I have 1,2,4, ...

I'd rather have windows sequential, so is there any way to force them to re-index?

Solution 1:

tmux 1.7 includes the renumber-windows session option that maintains a “gapless” sequence for a session’s window numbers. You can set the option “globally” to have it apply to all sessions that have not overridden the global value. E.g. in your ~/.tmux.conf:

set-option -g renumber-windows on

If you do not always want all your sessions to have “gapless” window numbers, then you can use move-window -r (the option is also new to *tmux 1.7) to renumber the windows in just the current session (or some other session if you use the -t option).

Solution 2:

There's no builtin way to do it, but this bash script should work. Run it from within the session:

i=0
tmux list-windows | cut -d: -f1 | while read winindex; do 
  if (( winindex != i )); then
    tmux move-window -d -s $winindex -t $i
  fi
  (( i++ ))
done

The -d flag to move-window avoids giving that window focus.