Sane tmux session management for zsh with dynamic session name autocompletion.

gistfile1.sh

function mux {
  case "$1" in
    "")
      # If no args, list all the available "visible" sessions.
      tmux ls | grep --color=never -C0 "^[^.]"
      ;;
    *)
      # "Hidden" sessions have a name starting with a '.'.
      session_id=".$1.`date +%Y%m%d%H%M%S`"
      # Try to create a hidden session and attach it to the specified one, killing it once finished.
      # Failing this, create a new "visible" session with the specified name, and keep it alive.
      (tmux new-session -s "$session_id" -t "$1"; tmux kill-session -t "$session_id") || tmux new-session -s "$1"
      ;;
  esac
}

# Dynamic autocompletion for "visible" session names.
function _mux {
  reply=(`mux | cut -d: -f1`)
}
compctl -K _mux mux