/usr/lib/ruby/2.3.0/tkextlib/tkDND.rb is in ruby2.3-tcltk 2.3.0-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | # frozen_string_literal: false
#
# TkDND (Tk Drag & Drop Extension) support
# by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
#
require 'tk'
# call setup script for general 'tkextlib' libraries
require 'tkextlib/setup.rb'
# call setup script
require 'tkextlib/tkDND/setup.rb'
module Tk
module TkDND
autoload :DND, 'tkextlib/tkDND/tkdnd'
autoload :Shape, 'tkextlib/tkDND/shape'
end
end
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