example.sh

# Given an app in auto jump, callme. Matched by "j cal".

 $ tmux    # start the initial session
 $ r cal   # runs "j cal", opens 3 tabs, starts rails in tab 2

tmux.conf

r() {
  [ -n "$1" ] && j "$1"
  tmux rename-window editor
  tmux new-window    -n shell
  tmux new-window    -n server
  tmux new-window    -n other
  tmux select-window -t 2
  tmux send-keys "rails s
"
  tmux select-window -t 1
  tmux select-window -t 0
}
complete -F _autojump r