/usr/lib/ruby/vendor_ruby/yajl/gzip.rb is in ruby-yajl 1.2.0-1.
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 | puts "DEPRECATION WARNING: Yajl's Gzip support is going to be removed in 2.0"
require 'yajl' unless defined?(Yajl::Parser)
require 'zlib' unless defined?(Zlib)
require 'yajl/gzip/stream_reader.rb'
require 'yajl/gzip/stream_writer.rb'
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