i3wm ctrl-p for window switching

.i3config

bindsym $mod+o exec i3-msg '[id='$(i3-msg -t get_tree | jq -r 'recurse(.nodes[]) | select(.window) | (.window | tostring) + ":" + .name' | ~/.config/bin/dmenu_map -i)'] focus'
bindsym $mod+Mod1+o exec i3-msg '[id='$(i3-msg -t get_tree | jq -r 'recurse(.nodes[]) | select(.window and .urgent) | (.window | tostring) + ":" + .name' | ~/.config/bin/dmenu_map -i)'] focus'

dmenu_map

#!/usr/bin/env ruby
item_counter = Hash.new {|h,k| h[k] = 0 }
items = {}
STDIN.each_line do |line|
  id, str = line.chomp.split(':', 2)
  
  counter_str = if item_counter[str] > 0
    "(#{item_counter[str]})"
  else
    ""
  end
  item_counter[str] += 1
  items["#{str} #{counter_str}"] = id
end
IO.popen(["dmenu", *ARGV], "r+", :err=>[:child, :out]) do |dmenu|
  items.each do |str, id|
    dmenu.puts(str)
  end
  dmenu.close_write
  res = dmenu.gets
  puts(items[res.chomp])
end