/usr/lib/ruby/vendor_ruby/naught/null_class_builder/commands.rb is in ruby-naught 1.0.0-1.
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 | require 'naught/null_class_builder/commands/define_explicit_conversions'
require 'naught/null_class_builder/commands/define_implicit_conversions'
require 'naught/null_class_builder/commands/pebble'
require 'naught/null_class_builder/commands/predicates_return'
require 'naught/null_class_builder/commands/singleton'
require 'naught/null_class_builder/commands/traceable'
require 'naught/null_class_builder/commands/mimic'
require 'naught/null_class_builder/commands/impersonate'
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