How to query current tab name of tabbed GUI terminals (any)

Using tmux, I have implemented a work flow in which I set a virtual home-directory for each "window" I create in tmux. I can query the name of the current window with

display-message -p '#W'

. So I pretty easily implement my system as shown in the code below. You get the idea. **QUESTION**
I would like to do the same kind of "per tab home directory" in a GUI terminal. But I need to query the name of the current tab so I can look up the home-dir in my simple DB. I can't find a way to query tab names. I prefer xfce4-terminal, but I am open to others. Thanks! --Myles

alias cdh 'cd ~/bin/get_tmux_window_home_dir'

% cat ~/bin/get_tmux_window_home_dir
#!/usr/bin/ruby
$VERBOSE = nil
window = tmux display-message -p '#W'.chomp
if ! $?.success?
  STDERR.puts "Error: tmux display-message -p '#W' failed."
  print 'XXXXX'
  exit 1
end
db_file = "/home/#{ENV['USER']}/.config/tmux_window_home_dir/tmux_window_home_dir.csv"
db = {}
if File.exists?(db_file)
  File.readlines(db_file).each do |l|
    s = l.split(',')
    db[s] = s
  end
end
if db[window]
  print db[window]
else
  STDERR.puts "Error: There is no home directory set for tmux window name '#{window}'"
  print 'XXXXX'
end