CODE EXAMPLE FOR SHELL

tmux status line with blank line on top

  set -Fg 'status-format[1]' '#{status-format[0]}'
  set -g 'status-format[0]' ''
  set -g status 2

  # This takes advantage of the multi-status bar support in tmux >= 2.9. 
  # It creates two status bars making the second your actual status bar 
  # and the first one a blank one to emulate white space