tmux zoom and unzoom pane into its window. Can have multiple panex zoomed in at once

tmux-zoom

#!/usr/bin/ruby

# INSTALL:
#
#   1. Make script executable and put it in your $PATH
#
#   2. add to ~/.tmux.conf
#
#        bind + run tmux-zoom
#
#   3. use <prefix-key> <+> to zoom and un-zoom
#

# require 'rubygems'; require 'ruby-debug'

WINDOW_PREFIX = 'tmux-zoom-'
window=`tmux display-message -p '#W'`.chomp!

if res = /\A#{WINDOW_PREFIX}(\d+)/.match(window)
  num = res[1]
  match = nil;
  `tmux show-env`.each do |line|
    if match = /^#{window}-origin=(.*)$/.match(line)
      break
    end
  end
  if match
    original_pane = match[1]
  else
    system('tmux display-message "This window isn\'t really zoomed."')
    exit(1)
  end

  original_window=original_pane.sub(/\..*?\Z/, "")

  system("tmux select-pane -t #{original_pane}\\; select-window -t #{original_window}\\; swap-pane -s #{window}.0 \\; kill-window -t #{window}")
else
  windows = `tmux list-windows -F "#W"`.each_line.grep(/^#{WINDOW_PREFIX}/).map(&:chomp!)
  new_title = "#{WINDOW_PREFIX}#{windows.length}"
  var_name = "#{new_title}-origin"
  origin_pane = `tmux display-message -p "#S:#I.#P"`.chomp!
  system("tmux set-env #{var_name} #{origin_pane}\\; new-window -d -n #{new_title} 'clear && echo see #{new_title} && read' \\; swap-pane -s #{new_title}.0 \\; select-window -t #{new_title}")
end