/usr/lib/ruby/vendor_ruby/treetop/runtime.rb is in ruby-treetop 1.6.8-1.
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 | require 'treetop/ruby_extensions'
require 'treetop/runtime/compiled_parser'
require 'treetop/runtime/syntax_node'
require 'treetop/runtime/terminal_parse_failure'
require 'treetop/runtime/interval_skip_list'
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